@charset "UTF-8";

:root {
  color-scheme: light;
  --bg: #f7f5ef;
  --app-bg: #f7f5ef;
  --safe-area-bg: #f7f5ef;
  --surface: #ffffff;
  --surface-strong: #fffdf8;
  --ink: #1f2933;
  --muted: #6b7280;
  --line: #e5e7eb;
  --accent: #2563eb;
  --accent-strong: #1d4ed8;
  --accent-soft: #eaf1ff;
  --accent-2: #14b8a6;
  --paper: #fffdf8;
  --paper-line: rgba(37, 99, 235, 0.06);
  --blue: #2563eb;
  --warn: #f59e0b;
  --danger: #dc2626;
  --radius-xs: 8px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --shadow-soft: 0 10px 26px rgba(31, 41, 51, 0.07);
  --shadow-card: 0 16px 38px rgba(31, 41, 51, 0.1);
  --shadow-float: 0 18px 44px rgba(37, 99, 235, 0.22);
  --shadow: var(--shadow-card);
  font-family:
    "Microsoft YaHei",
    "PingFang SC",
    "Segoe UI",
    system-ui,
    sans-serif;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #11110f;
  --app-bg: #11110f;
  --safe-area-bg: #11110f;
  --surface: #1b1c1f;
  --surface-strong: #222327;
  --ink: #f2efe8;
  --muted: #aaa49a;
  --line: rgba(255, 255, 255, 0.09);
  --accent: #6ea8ff;
  --accent-strong: #9bc2ff;
  --accent-soft: rgba(110, 168, 255, 0.13);
  --accent-2: #7dd3c7;
  --paper: #f3eee3;
  --paper-line: rgba(80, 90, 105, 0.16);
  --blue: #9bc2ff;
  --warn: #f5c06a;
  --danger: #ff8a8a;
  --shadow-soft: 0 10px 26px rgba(0, 0, 0, 0.18);
  --shadow-card: 0 16px 34px rgba(0, 0, 0, 0.24);
  --shadow-float: 0 18px 40px rgba(0, 0, 0, 0.28);
  --shadow: var(--shadow-card);
}

html {
  width: 100%;
  height: 100%;
  overflow: hidden;
  overscroll-behavior: none;
  touch-action: pan-x pan-y;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  background: var(--safe-area-bg);
}

* {
  box-sizing: border-box;
  scrollbar-width: none;
  -webkit-tap-highlight-color: transparent;
}

*::-webkit-scrollbar {
  width: 0;
  height: 0;
  display: none;
}

[hidden] {
  display: none !important;
}

body {
  width: 100%;
  height: 100vh;
  height: 100dvh;
  min-width: 320px;
  margin: 0;
  /* safe-area 不再由 body 处理，改由 .topbar（顶部）与 .bottom-nav（底部）各自覆盖。 */
  padding: 0;
  overflow: hidden;
  overscroll-behavior: none;
  background-color: var(--app-bg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.76), rgba(244, 247, 246, 0.88)),
    repeating-linear-gradient(
      180deg,
      transparent 0,
      transparent 27px,
      rgba(15, 118, 110, 0.08) 28px,
      transparent 29px
    );
  color: var(--ink);
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

body::before {
  display: none !important;
}

:root[data-theme="dark"] body {
  background:
    linear-gradient(180deg, rgba(17, 17, 15, 0.98), rgba(21, 21, 19, 0.98)),
    repeating-linear-gradient(
      180deg,
      transparent 0,
      transparent 27px,
      rgba(242, 239, 232, 0.025) 28px,
      transparent 29px
    );
}

body.viewer-open {
  overflow: hidden;
}

button,
input,
textarea {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
}

img {
  display: block;
  max-width: 100%;
  -webkit-touch-callout: none;
  -webkit-user-drag: none;
  -webkit-user-select: none;
  user-select: none;
}

input,
textarea,
[contenteditable="true"] {
  -webkit-touch-callout: default;
  -webkit-user-select: text;
  user-select: text;
}

noscript {
  display: block;
  margin: 16px;
  color: var(--danger);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.app-shell {
  position: relative;
  height: 100vh;
  height: 100dvh;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: none;
  -webkit-overflow-scrolling: touch;
  background: var(--app-bg);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: calc(76px + env(safe-area-inset-top));
  padding: calc(12px + env(safe-area-inset-top)) 14px 12px;
  border-bottom: 1px solid rgba(229, 231, 235, 0.9);
  background: #fffdf8;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

.install-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  gap: 8px;
  padding: 0 14px;
  border-radius: 8px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 700;
  white-space: nowrap;
}

.install-button:hover,
.install-button:focus-visible {
  background: var(--accent-strong);
  outline: none;
}

.install-button[hidden] {
  display: none;
}

.account-button {
  background: #ffffff;
  color: var(--accent-strong);
  box-shadow: 0 8px 20px rgba(23, 33, 31, 0.06);
}

.account-button:hover,
.account-button:focus-visible {
  background: var(--accent-soft);
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.topbar-actions {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex: 0 0 auto;
}

.topbar-action-button {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.topbar-action-button:disabled {
  opacity: 0.45;
}

.brand-lockup > div {
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  flex: 0 0 auto;
  border-radius: 8px;
  overflow: hidden;
  background: #8f1328;
  color: #ffffff;
  box-shadow: 0 10px 24px rgba(74, 11, 23, 0.22);
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand-lockup h1,
.library-head h2,
.tool-head h2 {
  margin: 0;
  letter-spacing: 0;
}

.brand-lockup h1 {
  font-size: 1.45rem;
  line-height: 1.2;
  overflow-wrap: anywhere;
}

.brand-lockup p,
.library-head p,
.status-message {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  width: min(1440px, 100%);
  margin: 0 auto;
  padding: 16px 14px calc(76px + env(safe-area-inset-bottom));
}

.library-panel,
.upload-tool {
  min-width: 0;
}

.library-head,
.tool-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.library-head > div:first-child {
  min-width: 0;
}

.library-head h2,
.tool-head h2 {
  font-size: 1.1rem;
}

.library-title-row {
  display: flex;
  align-items: center;
  min-height: 40px;
  gap: 6px;
}

.folder-back-button {
  margin-left: -10px;
}

.library-actions {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 4px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.searchbar {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr) 40px;
  align-items: center;
  gap: 10px;
  height: 54px;
  margin: 18px 0;
  padding: 0 8px 0 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 8px 24px rgba(23, 33, 31, 0.05);
}

.searchbar input {
  min-width: 0;
  height: 42px;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
}

.searchbar input::placeholder {
  color: #8a9794;
}

.library-filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin: -6px 0 18px;
}

/* 本地存储用量：放在筛选行最右侧，弱化处理、不抢视觉重点。 */
.library-storage-usage {
  flex: 0 0 auto;
  margin-left: auto;
  padding-left: 8px;
  font-size: 0.7rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.2px;
  color: var(--muted);
  opacity: 0.7;
  white-space: nowrap;
}

.library-storage-usage[hidden] {
  display: none;
}

.library-storage-usage.is-high {
  color: var(--danger, #dc2626);
  opacity: 0.95;
}

.library-filter-tabs {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  gap: 6px;
  padding: 4px;
  border: 1px solid rgba(15, 118, 110, 0.12);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.68);
  box-shadow: 0 8px 20px rgba(23, 33, 31, 0.05);
}

.library-filter-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 900;
  white-space: nowrap;
}

.library-filter-button:hover,
.library-filter-button:focus-visible,
.library-filter-button.is-active {
  background: var(--accent);
  color: #ffffff;
  outline: none;
}

.library-sort {
  position: relative;
  flex: 0 0 auto;
}

.library-sort select {
  min-height: 40px;
  max-width: 128px;
  padding: 0 30px 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  appearance: none;
  background:
    linear-gradient(45deg, transparent 50%, currentColor 50%) calc(100% - 16px) 16px / 6px 6px no-repeat,
    linear-gradient(135deg, currentColor 50%, transparent 50%) calc(100% - 10px) 16px / 6px 6px no-repeat,
    var(--surface);
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 900;
  outline: none;
  box-shadow: 0 8px 20px rgba(23, 33, 31, 0.05);
}

.library-sort select:focus-visible {
  border-color: rgba(15, 118, 110, 0.42);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
}

.icon-button {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
}

.icon-button:hover,
.icon-button:focus-visible {
  background: var(--accent-soft);
  color: var(--accent-strong);
  outline: none;
}

.icon-button:disabled {
  opacity: 0.38;
  pointer-events: none;
}

.icon-button.is-syncing {
  opacity: 1;
}

.icon-button.is-syncing .lucide,
.icon-button.is-syncing [data-lucide] {
  animation: sync-spin 0.75s linear infinite;
}

@keyframes sync-spin {
  to {
    transform: rotate(360deg);
  }
}

.score-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.score-card {
  display: grid;
  gap: 4px;
  justify-items: center;
  min-width: 0;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 10px 32px rgba(23, 33, 31, 0.07);
  cursor: pointer;
}

.score-preview {
  position: relative;
  display: grid;
  place-items: center;
  width: min(100%, 76px);
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border: 1px solid #e7eeeb;
  border-radius: 6px;
  background: #fbfbf8;
}

.score-preview img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 1;
}

/* 占位图（尚未拿到真实封面）显示得淡一些；真实封面保持完全不透明。 */
.score-preview img.is-score-placeholder {
  opacity: 0.5;
}

.score-favorite-mark {
  position: absolute;
  top: 4px;
  right: 4px;
  display: inline-grid;
  place-items: center;
  width: 18px;
  height: 18px;
  border-radius: 999px;
  background: rgba(255, 244, 215, 0.94);
  color: #bd7a00;
  box-shadow: 0 4px 10px rgba(83, 53, 0, 0.16);
}

.score-favorite-mark .lucide,
.score-favorite-mark [data-lucide] {
  width: 12px;
  height: 12px;
  fill: currentColor;
  stroke-width: 2.6;
}

.folder-card {
  background: var(--surface);
}

.folder-preview {
  border-color: rgba(189, 141, 43, 0.34);
  background:
    linear-gradient(180deg, #fff7de, #f4cf79);
  color: #7b4a08;
}

.folder-preview .lucide,
.folder-preview [data-lucide] {
  width: clamp(34px, 10vw, 48px);
  height: clamp(34px, 10vw, 48px);
  stroke-width: 1.7;
  filter: drop-shadow(0 8px 10px rgba(123, 74, 8, 0.18));
}

.score-name {
  width: 100%;
  min-height: 2.3em;
  margin: 0;
  overflow: hidden;
  color: var(--ink);
  font-size: clamp(0.68rem, 2.6vw, 0.95rem);
  font-weight: 700;
  line-height: 1.25;
  word-break: break-word;
}

.score-detail {
  width: 100%;
  margin: 0;
  color: var(--muted);
  font-size: clamp(0.58rem, 2.15vw, 0.8rem);
  white-space: nowrap;
}

.my-screen {
  min-height: calc(100vh - 80px);
  min-height: calc(100dvh - 80px);
}

.mine-panel {
  display: flex;
  flex-direction: column;
  width: min(720px, 100%);
  min-height: calc(100vh - 228px);
  min-height: calc(100dvh - 228px);
  margin: 0 auto;
}

.mine-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 40px;
}

.mine-head h2 {
  margin: 0;
  font-size: 1.1rem;
  letter-spacing: 0;
}

.mine-menu {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

/* “使用说明”恒排在“我的”菜单最末；以后新增栏目（默认 order:0）会排在它之前。 */
.mine-menu #usageGuideButton {
  order: 1;
}

.mine-strip-button {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) 22px;
  align-items: center;
  width: 100%;
  min-height: 54px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 8px 24px rgba(23, 33, 31, 0.05);
  font-weight: 800;
  text-align: left;
}

.mine-strip-button:hover,
.mine-strip-button:focus-visible {
  border-color: rgba(15, 118, 110, 0.34);
  background: #f8fbfa;
  color: var(--accent-strong);
  outline: none;
}

.mine-strip-icon {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.mine-auth-panel {
  display: grid;
  gap: 12px;
  margin-top: auto;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-strong);
  box-shadow: 0 12px 32px rgba(23, 33, 31, 0.07);
}

.mine-auth-state {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.45;
}

.mine-auth-button {
  min-height: 50px;
}

/* 关于我们放在使用说明之后。 */
.mine-menu #aboutButton {
  order: 2;
}

.bottom-nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 14;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
  height: calc(58px + env(safe-area-inset-bottom));
  min-height: 0;
  padding: 4px 12px env(safe-area-inset-bottom);
  border-top: 1px solid rgba(229, 231, 235, 0.86);
  border-radius: 0;
  background: #ffffff;
  box-shadow: 0 -10px 28px rgba(23, 33, 31, 0.1);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

.bottom-nav-button {
  min-height: 50px;
  align-self: start;
}

.setlist-screen {
  min-height: calc(100vh - 80px);
  min-height: calc(100dvh - 80px);
}

.setlist-panel {
  display: grid;
  gap: 14px;
  width: min(760px, 100%);
  margin: 0 auto;
}

.setlist-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.setlist-head h2 {
  margin: 0;
  color: var(--ink);
  font-size: 1.22rem;
  letter-spacing: 0;
}

.setlist-head p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.setlist-create-button {
  position: fixed;
  right: 18px;
  right: calc(18px + env(safe-area-inset-right));
  bottom: 74px;
  bottom: calc(74px + env(safe-area-inset-bottom));
  /* 低于 .topbar(z-index:5)，向上滑动时滑到顶部栏下方而不是盖住它。 */
  z-index: 4;
  min-height: 42px;
  padding: 0 18px;
  box-shadow: 0 14px 28px rgba(15, 118, 110, 0.2);
  white-space: nowrap;
}

.setlist-list {
  display: grid;
  gap: 10px;
  padding-bottom: 78px;
}

.setlist-card {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  min-height: 72px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 10px 28px rgba(23, 33, 31, 0.07);
  cursor: pointer;
}

.setlist-card:focus-within,
.setlist-card:hover {
  border-color: rgba(15, 118, 110, 0.28);
}

.setlist-card-icon {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.setlist-card-body {
  min-width: 0;
}

.setlist-card-body h3 {
  margin: 0;
  overflow: hidden;
  color: var(--ink);
  font-size: 1rem;
  font-weight: 900;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.setlist-card-body p {
  margin: 4px 0 0;
  overflow: hidden;
  color: var(--muted);
  font-size: 0.82rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.setlist-card-actions {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
}

.setlist-dialog {
  position: fixed;
  inset: 0;
  width: 100vw;
  max-width: none;
  height: 100vh;
  height: 100dvh;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  overflow: hidden;
  background: var(--app-bg);
  touch-action: auto;
}

.setlist-surface {
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  max-height: none;
  max-width: 100%;
  box-sizing: border-box;
  align-content: start;
  padding: calc(18px + env(safe-area-inset-top)) 18px calc(28px + env(safe-area-inset-bottom));
  border: 0;
  border-radius: 0;
  background: var(--surface);
  box-shadow: none;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-y;
}

.setlist-field {
  margin: 0;
}

.setlist-search {
  margin: 2px 0 0;
}

.setlist-editor-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  min-width: 0;
}

.setlist-editor-section {
  display: grid;
  align-content: start;
  gap: 8px;
  min-width: 0;
}

.setlist-editor-section h3 {
  margin: 0;
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 900;
}

.setlist-score-picker,
.setlist-order-list {
  display: grid;
  gap: 6px;
  max-width: 100%;
  max-height: none;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 2px;
  scrollbar-width: none;
  touch-action: pan-y;
}

.delete-setlist-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  justify-self: center;
  width: 151px;
  max-width: calc((100vw - 72px) / 2);
  min-height: 42px;
  gap: 8px;
  border-radius: 8px;
  background: #fff1ef;
  color: var(--danger);
  font-weight: 800;
}

.delete-setlist-button:hover,
.delete-setlist-button:focus-visible {
  background: #ffe2dd;
  outline: none;
}

.delete-setlist-button .lucide,
.delete-setlist-button [data-lucide] {
  width: 18px;
  height: 18px;
}

.delete-setlist-button[hidden] {
  display: none;
}

.setlist-score-picker::-webkit-scrollbar,
.setlist-order-list::-webkit-scrollbar {
  display: none;
}

.setlist-score-picker {
  min-height: 150px;
  max-height: min(32vh, 240px);
  padding-right: 6px;
  scrollbar-width: thin;
  scrollbar-color: rgba(15, 118, 110, 0.34) transparent;
}

.setlist-score-picker::-webkit-scrollbar {
  display: block;
  width: 5px;
}

.setlist-score-picker::-webkit-scrollbar-track {
  background: transparent;
}

.setlist-score-picker::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: rgba(15, 118, 110, 0.34);
}

.setlist-score-picker .empty-state {
  min-height: 150px;
}

.setlist-score-option,
.setlist-order-row {
  display: grid;
  align-items: center;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.setlist-score-option {
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 8px;
  padding: 0 10px;
  color: var(--ink);
  font-weight: 800;
}

.setlist-score-option span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 选择歌谱：文件夹分组 */
.setlist-folder-group {
  display: grid;
  gap: 6px;
}

.setlist-folder-header {
  display: grid;
  grid-template-columns: 18px 20px minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-muted, #f4f1ea);
  color: var(--ink);
  font-weight: 900;
  text-align: left;
  cursor: pointer;
}

.setlist-folder-header:active {
  transform: scale(0.995);
}

.setlist-folder-chevron,
.setlist-folder-icon {
  width: 18px;
  height: 18px;
  color: var(--brand, #0f766e);
}

.setlist-folder-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.setlist-folder-count {
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--muted);
}

.setlist-folder-body {
  display: grid;
  gap: 6px;
  padding-left: 14px;
}

:root[data-theme="dark"] .setlist-folder-header {
  background: #25221b;
  border-color: #3a352b;
  color: var(--ink);
}

.setlist-order-row {
  grid-template-columns: 28px minmax(0, 1fr) auto;
  gap: 8px;
  padding: 6px 8px;
}

.setlist-order-row strong {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.78rem;
}

.setlist-order-row > span {
  min-width: 0;
  overflow: hidden;
  color: var(--ink);
  font-size: 0.86rem;
  font-weight: 800;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.setlist-order-controls {
  display: inline-flex;
  gap: 2px;
}

.setlist-order-controls .icon-button {
  width: 30px;
  height: 30px;
}

.bottom-nav-button {
  display: grid;
  place-items: center;
  align-content: center;
  gap: 2px;
  min-width: 0;
  min-height: 48px;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
}

.bottom-nav-button:hover,
.bottom-nav-button:focus-visible,
.bottom-nav-button.is-active {
  background: var(--accent-soft);
  color: var(--accent-strong);
  outline: none;
}

.bottom-nav-button .lucide,
.bottom-nav-button [data-lucide] {
  width: 22px;
  height: 22px;
}

body.add-screen-open .bottom-nav {
  display: none;
}

body.profile-screen-open .bottom-nav,
body.profile-screen-open .fab-button,
body.preferences-screen-open .bottom-nav,
body.preferences-screen-open .fab-button,
body.usage-screen-open .bottom-nav,
body.usage-screen-open .fab-button,
body.recycle-bin-screen-open .bottom-nav,
body.recycle-bin-screen-open .fab-button,
body.backup-screen-open .bottom-nav,
body.backup-screen-open .fab-button,
body.support-screen-open .bottom-nav,
body.support-screen-open .fab-button {
  display: none;
}

.card-actions {
  display: grid;
  grid-template-columns: 1fr;
  width: 100%;
  gap: 0;
  justify-items: center;
}

.danger-button,
.more-button,
.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  gap: 8px;
  border-radius: 8px;
  font-weight: 700;
}

.more-button {
  width: min(100%, 74px);
  min-height: clamp(26px, 7.2vw, 36px);
  gap: 4px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: clamp(0.62rem, 2.25vw, 0.8rem);
}

.more-button:hover,
.more-button:focus-visible {
  background: #d9f3ef;
  outline: none;
}

.more-button .lucide,
.more-button [data-lucide] {
  width: clamp(12px, 3.2vw, 16px);
  height: clamp(12px, 3.2vw, 16px);
}

.danger-button {
  width: min(100%, 74px);
  min-height: clamp(26px, 7.2vw, 36px);
  gap: 4px;
  background: #fff1ef;
  color: var(--danger);
  font-size: clamp(0.62rem, 2.25vw, 0.8rem);
}

.danger-button:hover,
.danger-button:focus-visible {
  background: #ffe2dd;
  outline: none;
}

.danger-button .lucide,
.danger-button [data-lucide] {
  width: clamp(12px, 3.2vw, 16px);
  height: clamp(12px, 3.2vw, 16px);
}

.danger-choice-button {
  background: #fff1ef;
  color: var(--danger);
}

.danger-choice-button:hover,
.danger-choice-button:focus-visible {
  background: #ffe2dd;
}

.score-edit-dialog {
  position: fixed;
  inset: 0;
  width: 100vw;
  max-width: none;
  height: 100vh;
  height: 100dvh;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  overflow: hidden;
  background: var(--app-bg);
  touch-action: auto;
}

.score-edit-dialog::backdrop,
.setlist-dialog::backdrop {
  background: var(--app-bg);
}

.score-edit-surface {
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  max-width: 100%;
  max-height: none;
  box-sizing: border-box;
  align-content: start;
  padding: calc(18px + env(safe-area-inset-top)) 18px calc(28px + env(safe-area-inset-bottom));
  border: 0;
  border-radius: 0;
  background: var(--surface);
  box-shadow: none;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-y;
  gap: 10px;
}

.score-edit-field {
  margin: 0;
}

.score-edit-dialog.is-move-mode .score-edit-name-field,
.score-edit-dialog.is-move-mode .score-edit-key-field,
.score-edit-dialog.is-move-mode .score-edit-notes-field {
  display: none;
}

.page-manager-dialog {
  position: fixed;
  inset: 0;
  width: 100vw;
  max-width: none;
  height: 100vh;
  height: 100dvh;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  overflow-x: hidden;
  overflow-y: auto;
  background: var(--app-bg);
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}

.page-manager-dialog::backdrop {
  background: var(--app-bg);
}

.page-manager-surface {
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  max-width: none;
  max-height: none;
  box-sizing: border-box;
  align-content: start;
  padding: calc(18px + env(safe-area-inset-top)) 14px calc(28px + env(safe-area-inset-bottom));
  border: 0;
  border-radius: 0;
  background: var(--surface);
  box-shadow: none;
}

.page-manager-toolbar {
  display: flex;
  justify-content: center;
}

.page-manager-toolbar button {
  min-width: 168px;
  min-height: 42px;
}

.page-manager-list {
  display: grid;
  gap: 10px;
}

.page-manager-row {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 10px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.page-manager-thumb {
  width: 76px;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8faf9;
}

.page-manager-thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  user-select: none;
  -webkit-user-drag: none;
}

.page-manager-body {
  display: grid;
  align-content: start;
  min-width: 0;
  gap: 4px;
}

.page-manager-body strong,
.page-manager-body span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.page-manager-body strong {
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 900;
}

.page-manager-body span {
  color: var(--muted);
  font-size: 0.78rem;
}

.page-manager-actions {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 6px;
}

.page-manager-icon-button {
  display: grid;
  place-items: center;
  min-height: 36px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.page-manager-icon-button.is-danger {
  background: #fff1ef;
  color: var(--danger);
}

.page-manager-icon-button:disabled {
  opacity: 0.38;
}

.page-manager-icon-button .lucide,
.page-manager-icon-button [data-lucide] {
  width: 18px;
  height: 18px;
}

.field textarea {
  width: 100%;
  min-height: 78px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--ink);
  font: inherit;
  line-height: 1.45;
  resize: none;
}

.field textarea:focus {
  border-color: rgba(15, 118, 110, 0.45);
  outline: 2px solid rgba(15, 118, 110, 0.12);
}

.score-edit-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.dialog-pair-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  width: 100%;
}

.dialog-pair-actions > button {
  flex: 0 0 151px;
  width: 151px;
  max-width: calc((100vw - 72px) / 2);
  min-height: 42px;
}

.setlist-surface .dialog-pair-actions > button,
.score-edit-surface .dialog-pair-actions > button {
  flex-basis: 151px;
  width: 151px;
}

.native-folder-select {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.folder-select {
  position: relative;
  min-width: 0;
}

.folder-select-button {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 20px;
  align-items: center;
  width: 100%;
  min-height: 46px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--ink);
  font: inherit;
  font-weight: 800;
  text-align: left;
}

.folder-select-button span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.folder-select-button:hover,
.folder-select-button:focus-visible,
.folder-select.is-open .folder-select-button {
  border-color: rgba(15, 118, 110, 0.45);
  background: var(--accent-soft);
  color: var(--accent-strong);
  outline: none;
}

.folder-select-options {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  left: 0;
  z-index: 8;
  display: grid;
  gap: 4px;
  max-height: 220px;
  overflow-y: auto;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 18px 38px rgba(23, 33, 31, 0.16);
  scrollbar-width: none;
}

.folder-select-options[hidden] {
  display: none;
}

.folder-select-options::-webkit-scrollbar {
  display: none;
}

.folder-select-option {
  min-height: 40px;
  padding: 0 10px;
  border-radius: 7px;
  background: transparent;
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 800;
  text-align: left;
}

.folder-select-option:hover,
.folder-select-option:focus-visible,
.folder-select-option.is-selected {
  background: var(--accent-soft);
  color: var(--accent-strong);
  outline: none;
}

.upload-screen {
  width: min(760px, 100%);
  margin: 0 auto;
  padding: 20px 24px 40px;
}

.upload-tool {
  display: block;
  width: 100%;
  align-self: start;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-strong);
  box-shadow: var(--shadow);
}

.profile-screen {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: block;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: calc(14px + env(safe-area-inset-top)) 18px calc(28px + env(safe-area-inset-bottom));
  background-color: var(--app-bg);
  background-image: linear-gradient(180deg, #ffffff 0%, #f4f7f6 42%, #eef5f3 100%);
  -webkit-overflow-scrolling: touch;
}

.profile-screen[hidden] {
  display: none;
}

.profile-page {
  display: grid;
  align-content: start;
  width: min(720px, 100%);
  min-height: 100%;
  margin: 0 auto;
  gap: 14px;
}

.profile-page-head {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) 42px;
  align-items: center;
  min-height: 54px;
  gap: 8px;
}

.profile-page-head h2 {
  margin: 0;
  text-align: center;
  font-size: 1.18rem;
  letter-spacing: 0;
}

.profile-state {
  min-height: 22px;
}

.profile-field {
  margin: 0;
}

.profile-segmented {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 4px;
  min-height: 46px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-strong);
}

.profile-segment-button {
  min-width: 0;
  min-height: 36px;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font-weight: 900;
}

.profile-segment-button:hover,
.profile-segment-button:focus-visible {
  color: var(--accent-strong);
  outline: none;
}

.profile-segment-button.is-active {
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 8px 18px rgba(15, 118, 110, 0.2);
}

.profile-birthday-field {
  position: relative;
}

.profile-birthday-button {
  display: grid;
  place-items: center;
  width: 100%;
  min-width: 0;
  height: 46px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--muted);
  font-weight: 800;
  line-height: 1;
  text-align: center;
}

.profile-birthday-button.has-value {
  color: var(--ink);
}

.profile-birthday-button span {
  display: grid;
  place-items: center;
  min-width: 0;
  width: 100%;
  height: 100%;
  text-align: center;
}

.upload-meta-field {
  margin: 0;
}

.preferences-page {
  gap: 16px;
}

.preference-section {
  display: grid;
  gap: 10px;
}

.preference-section h3 {
  margin: 0;
  color: var(--ink);
  font-size: 0.98rem;
  letter-spacing: 0;
}

.preference-choice-list {
  display: grid;
  gap: 10px;
}

.preference-choice-button {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) 24px;
  align-items: center;
  min-height: 58px;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--ink);
  font-weight: 900;
  text-align: left;
}

.preference-choice-button:hover,
.preference-choice-button:focus-visible {
  border-color: rgba(15, 118, 110, 0.42);
  background: var(--accent-soft);
  outline: none;
}

.preference-choice-button.is-active {
  border-color: rgba(15, 118, 110, 0.54);
  background: var(--accent-soft);
  color: var(--accent-strong);
  box-shadow: 0 12px 26px rgba(15, 118, 110, 0.12);
}

.preference-choice-icon {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: #eef5f3;
  color: var(--accent-strong);
}

.preference-choice-button .lucide,
.preference-choice-button [data-lucide] {
  width: 20px;
  height: 20px;
}

.preference-choice-button > .lucide:last-child,
.preference-choice-button > [data-lucide]:last-child {
  justify-self: end;
  opacity: 0;
}

.preference-choice-button.is-active > .lucide:last-child,
.preference-choice-button.is-active > [data-lucide]:last-child {
  opacity: 1;
}

.tool-title {
  display: flex;
  align-items: center;
  min-width: 0;
  gap: 8px;
}

.fab-button {
  position: fixed;
  right: 24px;
  right: calc(24px + env(safe-area-inset-right));
  bottom: 82px;
  bottom: calc(82px + env(safe-area-inset-bottom));
  z-index: 10;
  width: min(185px, calc(100vw - 56px));
  aspect-ratio: 1144 / 385;
  padding: 0;
  border-radius: 999px;
  overflow: hidden;
  background: transparent;
  color: #fce8ae;
  box-shadow: 0 8px 18px rgba(66, 9, 18, 0.24);
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  cursor: grab;
}

.fab-button.is-dragging {
  cursor: grabbing;
  filter: drop-shadow(0 10px 18px rgba(66, 9, 18, 0.3));
}

.fab-button::before {
  content: "";
  position: absolute;
  top: 5%;
  right: 3%;
  bottom: 5%;
  left: 40%;
  z-index: 1;
  border-radius: 999px;
  background:
    radial-gradient(circle at 20% 42%, rgba(247, 174, 43, 0.16), transparent 28%),
    linear-gradient(180deg, #9d1026 0%, #850e21 50%, #650915 100%);
  pointer-events: none;
}

.fab-button::after {
  content: "添加歌谱";
  position: absolute;
  top: 50%;
  right: 15px;
  z-index: 2;
  width: 84px;
  transform: translateY(-50%);
  color: #ffe6a5;
  font-size: 1.28rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0;
  text-align: center;
  text-shadow: none;
  pointer-events: none;
}

.fab-button:hover,
.fab-button:focus-visible {
  outline: none;
}

.fab-button:focus-visible {
  filter: drop-shadow(0 0 0.35rem rgba(15, 118, 110, 0.45));
}

.fab-art {
  position: absolute;
  inset: 0;
  z-index: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
  user-select: none;
  -webkit-user-drag: none;
}

.fab-fallback {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: none;
  place-items: center;
  padding-left: 42%;
  font-size: 1.15rem;
  font-weight: 900;
  letter-spacing: 0;
  text-shadow: 0 2px 2px rgba(51, 20, 0, 0.42);
}

.fab-button.fab-image-ready .fab-fallback {
  opacity: 0;
}

.field {
  display: grid;
  gap: 8px;
  margin: 18px 0 16px;
  color: var(--ink);
  font-size: 0.95rem;
  font-weight: 700;
}

.field input,
.field select {
  box-sizing: border-box;
  width: 100%;
  min-width: 0;
  max-width: 100%;
  height: 46px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  outline: none;
  background: #ffffff;
  color: var(--ink);
  font-weight: 500;
}

/* 调号选择器：第一排升/降 + 清除，第二排音名 C–B，点选组合成调号（如 ♯ + E = #E）。 */
.key-picker-heading {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* 实时反馈：在“调号”后显示当前选中的字符（如 #E）；未选择时显示提示文案。 */
.key-picker-preview {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 2px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.key-picker-preview:empty::before {
  content: attr(data-empty);
  color: var(--muted);
  font-weight: 600;
}

.key-picker-preview:empty {
  background: rgba(15, 23, 42, 0.04);
}

.key-picker {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.7);
  box-shadow: var(--shadow-soft);
}

.key-picker-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.key-picker-accidentals .key-chip-accidental {
  flex: 1 1 0;
}

.key-picker-accidentals .key-chip-clear {
  flex: 0 0 auto;
  margin-left: auto;
}

.key-picker-notes .key-chip {
  flex: 1 1 calc((100% - 48px) / 7);
}

.key-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  min-width: 0;
  min-height: 42px;
  padding: 0 12px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: #ffffff;
  color: var(--ink);
  font-size: 1rem;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 1px 2px rgba(23, 33, 31, 0.06);
  transition:
    transform 0.12s ease,
    background 0.15s ease,
    border-color 0.15s ease,
    color 0.15s ease,
    box-shadow 0.15s ease;
}

.key-chip-symbol {
  font-size: 1.22rem;
  line-height: 1;
}

.key-chip:hover,
.key-chip:focus-visible {
  border-color: rgba(37, 99, 235, 0.5);
  color: var(--accent-strong);
  outline: none;
}

.key-chip:active {
  transform: scale(0.95);
}

.key-chip.is-active {
  border-color: transparent;
  background: var(--accent);
  color: #ffffff;
  box-shadow: var(--shadow-float);
}

.key-chip-clear {
  gap: 4px;
  padding: 0 14px;
  background: transparent;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 700;
  box-shadow: none;
}

.key-chip-clear .lucide,
.key-chip-clear [data-lucide] {
  width: 15px;
  height: 15px;
}

.key-chip-clear:hover,
.key-chip-clear:focus-visible {
  border-color: rgba(220, 38, 38, 0.4);
  color: var(--danger);
}

:root[data-theme="dark"] .key-picker {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.1);
}

:root[data-theme="dark"] .key-chip {
  background: rgba(255, 255, 255, 0.06);
}

:root[data-theme="dark"] .key-chip.is-active {
  background: var(--accent);
  color: #ffffff;
}

:root[data-theme="dark"] .key-chip-clear {
  background: transparent;
}

:root[data-theme="dark"] .key-picker-preview:empty {
  background: rgba(255, 255, 255, 0.06);
}

#profileBirthday {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  width: 100%;
  height: 46px;
  opacity: 0;
  cursor: pointer;
}

.field input:focus,
.field select:focus,
.searchbar:focus-within {
  border-color: rgba(15, 118, 110, 0.72);
  box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.12);
}

#setlistDate {
  min-width: 0;
  -webkit-appearance: none;
  appearance: none;
}

.profile-contact-list {
  display: grid;
  gap: 8px;
}

.profile-contact-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  align-items: center;
  min-height: 46px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-strong);
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 800;
}

.profile-link-button {
  justify-self: stretch;
  min-width: 0;
  min-height: 34px;
  padding: 0 10px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 800;
  text-align: center;
  overflow-wrap: anywhere;
}

.profile-link-button.is-linked {
  background: transparent;
  color: var(--muted);
  cursor: default;
}

.auth-dialog,
.share-dialog,
.choice-dialog,
.folder-dialog {
  width: min(360px, calc(100vw - 36px));
  max-height: calc(100dvh - 24px);
  padding: 0;
  border: 0;
  border-radius: 8px;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: transparent;
  -webkit-overflow-scrolling: touch;
}

.share-dialog {
  width: min(430px, calc(100vw - 28px));
}

.auth-dialog::backdrop,
.share-dialog::backdrop,
.choice-dialog::backdrop,
.folder-dialog::backdrop {
  background: rgba(23, 33, 31, 0.42);
}

.auth-surface,
.share-surface,
.choice-surface,
.folder-surface {
  display: grid;
  gap: 14px;
  padding: 20px 18px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 22px 64px rgba(23, 33, 31, 0.24);
}

.auth-dialog.score-edit-dialog,
.auth-dialog.setlist-dialog,
.auth-dialog.page-manager-dialog,
.auth-dialog.move-setlist-dialog {
  position: fixed;
  inset: 0;
  width: 100vw;
  max-width: none;
  height: 100vh;
  height: 100dvh;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  overflow-x: hidden;
  overflow-y: auto;
  background: var(--app-bg);
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}

.auth-dialog.score-edit-dialog::backdrop,
.auth-dialog.setlist-dialog::backdrop,
.auth-dialog.page-manager-dialog::backdrop,
.auth-dialog.move-setlist-dialog::backdrop {
  background: var(--app-bg);
}

.auth-surface.score-edit-surface,
.auth-surface.setlist-surface,
.auth-surface.page-manager-surface,
.auth-surface.move-setlist-surface {
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  height: auto;
  max-width: none;
  max-height: none;
  box-sizing: border-box;
  align-content: start;
  padding: calc(18px + env(safe-area-inset-top)) 18px calc(28px + env(safe-area-inset-bottom));
  border: 0;
  border-radius: 0;
  background: var(--surface);
  box-shadow: none;
  overflow: visible;
  touch-action: pan-y;
}

.auth-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.auth-head h2 {
  margin: 0;
}

.auth-state {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.auth-pane {
  display: grid;
  gap: 12px;
}

.auth-pane[hidden] {
  display: none;
}

.auth-entry-pane {
  padding-top: 2px;
}

.auth-register-hint {
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.4;
  text-align: center;
}

.auth-pane .field {
  margin: 0;
}

.auth-login-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px;
  padding: 4px;
  border-radius: 8px;
  background: rgba(31, 41, 51, 0.06);
}

.auth-login-tab {
  min-height: 38px;
  padding: 0 12px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 800;
  cursor: pointer;
}

.auth-login-tab.is-active {
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 1px 4px rgba(31, 41, 51, 0.1);
}

.auth-login-method-fields {
  display: grid;
  gap: 12px;
}

.auth-login-help {
  display: flex;
  justify-content: flex-end;
  margin-top: -4px;
}

.auth-text-button {
  min-height: 30px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.86rem;
  font-weight: 700;
  cursor: pointer;
}

.auth-text-button:hover,
.auth-text-button:focus-visible {
  color: var(--ink);
}

:root[data-theme="dark"] .auth-login-tabs {
  background: rgba(255, 255, 255, 0.06);
}

:root[data-theme="dark"] .auth-login-tab.is-active {
  background: var(--surface-strong);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.28);
}

.auth-wide-button,
.signout-only-button {
  width: 100%;
}

.signout-only-button {
  background: var(--danger);
  color: #ffffff;
}

.signout-only-button:hover,
.signout-only-button:focus-visible {
  background: #8f1d14;
}

.auth-choice-pane .choice-button {
  width: 100%;
}

.auth-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.auth-actions.dialog-pair-actions {
  display: flex;
  grid-template-columns: none;
  align-items: center;
  justify-content: center;
  gap: 18px;
  width: 100%;
}

.auth-actions.dialog-pair-actions > button {
  flex: 0 1 151px;
  width: 151px;
  max-width: calc((100vw - 72px) / 2);
  box-sizing: border-box;
}

.auth-actions .cancel-delete-button[hidden] {
  display: none;
}

.auth-actions:has(.cancel-delete-button[hidden]) {
  grid-template-columns: 1fr 1fr;
}

.share-list {
  display: grid;
  gap: 8px;
  max-height: min(52vh, 420px);
  overflow: auto;
  overscroll-behavior: contain;
}

.share-select-all {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 40px;
  padding: 8px 10px;
  border: 1px solid rgba(15, 118, 110, 0.2);
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 800;
}

.share-select-all input {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

.share-folder-group {
  display: grid;
  gap: 6px;
}

.share-option {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--ink);
  font-weight: 700;
}

.share-folder-option {
  min-height: 54px;
}

.share-option input {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

.share-option span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.share-folder-name {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  min-width: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
}

.share-folder-name .lucide,
.share-folder-name [data-lucide] {
  width: 20px;
  height: 20px;
  color: #b7791f;
}

.share-folder-name span {
  min-width: 0;
}

.share-folder-name small {
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 700;
  white-space: nowrap;
}

.share-folder-name:focus-visible {
  outline: 2px solid rgba(15, 118, 110, 0.42);
  outline-offset: 4px;
}

.share-folder-children {
  display: grid;
  gap: 6px;
  padding-left: 24px;
}

.share-child-option {
  min-height: 42px;
  padding-block: 7px;
  background: #f8faf9;
  font-size: 0.92rem;
}

.share-child-option input:disabled + span {
  color: var(--muted);
}

.share-folder-empty {
  margin: 0;
  padding: 8px 10px;
  border: 1px dashed var(--line);
  border-radius: 8px;
  color: var(--muted);
  font-size: 0.84rem;
}

.share-search {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--muted);
}

.share-search svg {
  width: 18px;
  height: 18px;
}

.share-search input {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
}

.share-code-panel {
  display: grid;
  gap: 6px;
  padding: 12px;
  border: 1px solid rgba(15, 118, 110, 0.22);
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.share-code-panel span {
  font-size: 0.78rem;
  font-weight: 700;
}

.share-code-panel strong {
  font-size: 1.35rem;
  letter-spacing: 0.08em;
}

.share-code-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
}

.copy-code-button {
  display: inline-grid;
  grid-template-columns: 16px auto;
  align-items: center;
  gap: 5px;
  min-height: 34px;
  padding: 0 10px;
  border: 1px solid rgba(15, 118, 110, 0.26);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 800;
}

.copy-code-button svg {
  width: 16px;
  height: 16px;
}

.share-dialog-status {
  margin: 0;
  min-height: 20px;
  color: var(--accent-strong);
  font-size: 0.84rem;
  line-height: 1.45;
}

.share-dialog-status[hidden] {
  display: none;
}

.share-dialog-status.is-error {
  color: var(--danger);
}

.choice-surface h2,
.folder-surface h2 {
  margin: 0;
  color: var(--ink);
  font-size: 1.08rem;
  letter-spacing: 0;
}

.choice-actions {
  display: grid;
  gap: 10px;
}

.share-type-actions {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.share-type-actions .choice-button {
  grid-template-columns: 1fr;
  justify-items: center;
  min-height: 86px;
  text-align: center;
}

.choice-button {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  align-items: center;
  min-height: 62px;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--ink);
  font-weight: 800;
  text-align: left;
}

.choice-button:hover,
.choice-button:focus-visible {
  border-color: rgba(15, 118, 110, 0.48);
  background: var(--accent-soft);
  color: var(--accent-strong);
  outline: none;
}

.choice-button .lucide,
.choice-button [data-lucide] {
  width: 26px;
  height: 26px;
  justify-self: center;
}

.move-setlist-surface {
  gap: 12px;
}

.move-setlist-list {
  display: grid;
  gap: 8px;
  max-height: min(38vh, 360px);
  overflow-x: hidden;
  overflow-y: auto;
  padding-right: 2px;
  overscroll-behavior: contain;
  touch-action: pan-y;
}

.move-setlist-option {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  min-height: 50px;
  padding: 9px 11px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--ink);
  font-weight: 820;
  text-align: left;
}

.move-setlist-option:hover,
.move-setlist-option:focus-visible {
  border-color: rgba(15, 118, 110, 0.42);
  background: var(--accent-soft);
  color: var(--accent-strong);
  outline: none;
}

.move-setlist-option:disabled {
  background: var(--surface-strong);
  color: var(--muted);
  cursor: default;
  opacity: 0.78;
}

.move-setlist-option .lucide,
.move-setlist-option [data-lucide] {
  width: 18px;
  height: 18px;
}

.move-setlist-option span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.move-setlist-create {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-strong);
}

.move-setlist-create h3 {
  margin: 0;
  color: var(--ink);
  font-size: 0.95rem;
  font-weight: 900;
}

.readonly-setlist-badge {
  display: inline-grid;
  place-items: center;
  min-height: 32px;
  padding: 0 10px;
  border: 1px solid rgba(15, 118, 110, 0.2);
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 900;
  white-space: nowrap;
}

.folder-surface {
  justify-items: stretch;
}

.folder-mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 8px;
  background: #fff2ce;
  color: #8a5a0a;
}

.folder-mark .lucide,
.folder-mark [data-lucide] {
  width: 26px;
  height: 26px;
}

.folder-name-field {
  margin: 0;
}

.folder-save-button {
  background: var(--accent);
}

.folder-save-button:hover,
.folder-save-button:focus-visible {
  background: var(--accent-strong);
}

.source-group {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.score-title-recognition {
  min-height: 18px;
  margin: -8px 0 2px;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.4;
}

.score-title-recognition[data-result="success"] {
  color: var(--accent-strong);
}

.source-button {
  display: grid;
  place-items: center;
  gap: 8px;
  min-width: 0;
  min-height: 82px;
  padding: 10px 6px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--ink);
  font-weight: 700;
}

.source-button:hover,
.source-button:focus-visible {
  border-color: rgba(37, 99, 235, 0.58);
  background: #eff5ff;
  color: #1745a3;
  outline: none;
}

.pending-area {
  display: grid;
  gap: 10px;
  min-height: 84px;
  margin: 16px 0;
  padding: 12px;
  border: 1px dashed #c4d2ce;
  border-radius: 8px;
  background: #f8fbfa;
}

.pending-empty {
  display: grid;
  place-items: center;
  min-height: 58px;
  color: var(--muted);
  font-size: 0.92rem;
  text-align: center;
}

.pending-row {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr) 40px;
  align-items: center;
  gap: 10px;
}

.pending-thumb {
  display: block;
  width: 54px;
  height: 68px;
  padding: 0;
  overflow: hidden;
  border: 1px solid #e0e8e5;
  border-radius: 6px;
  background: #ffffff;
  cursor: zoom-in;
}

.pending-thumb:hover,
.pending-thumb:focus-visible {
  border-color: #b9c8c3;
  outline: none;
}

.pending-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.pending-title {
  margin: 0;
  overflow: hidden;
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pending-meta {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 0.8rem;
}

.primary-button {
  width: 100%;
  min-height: 48px;
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 12px 24px rgba(15, 118, 110, 0.2);
}

.primary-button:hover,
.primary-button:focus-visible {
  background: var(--accent-strong);
  outline: none;
}

.primary-button:disabled {
  background: #aebbb8;
  box-shadow: none;
}

.status-message {
  min-height: 22px;
}

.confirm-dialog {
  width: min(340px, calc(100vw - 36px));
  padding: 0;
  border: 0;
  border-radius: 8px;
  background: transparent;
}

.confirm-dialog::backdrop {
  background: rgba(23, 33, 31, 0.46);
}

.confirm-surface {
  display: grid;
  justify-items: center;
  gap: 12px;
  padding: 22px 18px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 22px 64px rgba(23, 33, 31, 0.24);
  text-align: center;
}

.confirm-mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 8px;
  background: #fff1ef;
  color: var(--danger);
}

.confirm-mark .lucide,
.confirm-mark [data-lucide] {
  width: 24px;
  height: 24px;
}

.confirm-surface h2 {
  margin: 0;
  color: var(--ink);
  font-size: 1.08rem;
  letter-spacing: 0;
}

.confirm-surface p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.45;
}

.confirm-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  width: 100%;
  margin-top: 4px;
}

.cancel-delete-button,
.confirm-delete-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  gap: 8px;
  border-radius: 8px;
  font-weight: 800;
}

.cancel-delete-button {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.cancel-delete-button:hover,
.cancel-delete-button:focus-visible {
  background: #cce9e5;
  outline: none;
}

.confirm-delete-button {
  background: var(--danger);
  color: #ffffff;
}

.confirm-delete-button:hover,
.confirm-delete-button:focus-visible {
  background: #8f1d14;
  outline: none;
}

.confirm-delete-button.folder-save-button {
  background: var(--accent);
}

.confirm-delete-button.folder-save-button:hover,
.confirm-delete-button.folder-save-button:focus-visible {
  background: var(--accent-strong);
}

.confirm-delete-button .lucide,
.confirm-delete-button [data-lucide] {
  width: 18px;
  height: 18px;
}

.empty-state {
  display: grid;
  grid-column: 1 / -1;
  place-items: center;
  min-height: 280px;
  padding: 28px;
  border: 1px dashed #c8d6d2;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--muted);
  text-align: center;
}

.empty-state strong {
  display: block;
  margin-bottom: 6px;
  color: var(--ink);
  font-size: 1.05rem;
}

.viewer-dialog {
  width: 100vw;
  max-width: none;
  height: 100vh;
  height: 100dvh;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  overflow: hidden;
  background: #ffffff;
  scrollbar-width: none;
}

.viewer-dialog::backdrop {
  background: #ffffff;
}

.viewer-surface {
  position: relative;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
  background: #ffffff;
  scrollbar-width: none;
  --viewer-topbar-height: calc(48px + env(safe-area-inset-top));
  --viewer-piano-height: 272px;
  --viewer-metronome-height: 196px;
}

.viewer-topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  min-height: var(--viewer-topbar-height);
  padding: env(safe-area-inset-top) 12px 0;
  border-bottom: 1px solid rgba(224, 232, 229, 0.82);
  background: rgba(255, 255, 255, 0.94);
  color: var(--ink);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

/* 顶部栏按钮排成一层：返回·演出·页码·调号·更多。 */
.viewer-more {
  position: relative;
  flex: 0 0 auto;
}

/* “更多”按钮：与顶栏“返回/演出”按钮同款圆角风格，保持一致。 */
.viewer-more-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-height: 38px;
  padding: 0 10px;
  border-radius: 8px;
  background: transparent;
  color: var(--accent-strong);
  font-size: 0.92rem;
  font-weight: 900;
  white-space: nowrap;
}

.viewer-more-button:hover,
.viewer-more-button:focus-visible,
.viewer-more.is-open .viewer-more-button {
  background: var(--accent-soft);
  outline: none;
}

.viewer-more-button .lucide,
.viewer-more-button [data-lucide] {
  width: 20px;
  height: 20px;
}

.annotation-done-top-button {
  display: none;
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
}

.viewer-dialog.is-annotation-mode .viewer-more-button {
  display: none;
}

.viewer-dialog.is-annotation-mode .annotation-done-top-button {
  display: inline-flex;
}

.viewer-dialog.is-annotation-mode .viewer-more-menu {
  display: none !important;
}

/* “更多”弹出菜单：标注 + 收藏。默认隐藏，容器加 .is-open 时显示（不依赖全局 [hidden]）。 */
.viewer-more-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 20;
  display: none;
  flex-direction: column;
  gap: 4px;
  min-width: 140px;
  padding: 6px;
  border: 1px solid rgba(224, 232, 229, 0.9);
  border-radius: 14px;
  background: #ffffff;
  box-shadow: 0 16px 38px rgba(31, 41, 51, 0.2);
}

.viewer-more.is-open .viewer-more-menu {
  display: flex;
}

/* 菜单内的标注/收藏按钮：统一成横向一行的菜单项样式（透明底、悬停高亮）。 */
.viewer-more-menu .viewer-annotation-button,
.viewer-more-menu .viewer-favorite-button {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  width: 100%;
  height: auto;
  min-height: 42px;
  padding: 0 12px;
  border-radius: 10px;
  background: transparent;
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 800;
}

.viewer-more-menu .viewer-annotation-button .lucide,
.viewer-more-menu .viewer-annotation-button [data-lucide],
.viewer-more-menu .viewer-favorite-button .lucide,
.viewer-more-menu .viewer-favorite-button [data-lucide] {
  width: 18px;
  height: 18px;
}

.viewer-more-menu .viewer-annotation-button:hover,
.viewer-more-menu .viewer-annotation-button:focus-visible,
.viewer-more-menu .viewer-favorite-button:hover,
.viewer-more-menu .viewer-favorite-button:focus-visible {
  background: var(--accent-soft);
  outline: none;
}

/* 保留各自的“激活”态：标注开启高亮、收藏已收藏显示金色。 */
.viewer-more-menu .viewer-annotation-button.is-active {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.viewer-more-menu .viewer-favorite-button.is-active {
  color: #bd7a00;
}

.viewer-left-controls,
.viewer-right-controls {
  position: relative;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  flex: 1 1 0;
  min-width: 0;
  gap: 6px;
}

.viewer-left-controls {
  justify-content: flex-start;
}

.viewer-right-controls {
  justify-content: flex-end;
}

.viewer-key-signature {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  justify-self: end;
  min-width: 0;
  max-width: 32vw;
  min-height: 28px;
  padding: 0 9px;
  border: 1px solid rgba(15, 118, 110, 0.18);
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 900;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.viewer-key-signature[hidden] {
  display: none;
}

.viewer-page-indicator {
  position: static;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  min-width: 46px;
  min-height: 28px;
  padding: 0 8px;
  border-radius: 999px;
  background: #f3f8f7;
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 900;
  white-space: nowrap;
}

.viewer-performance-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 30px;
  gap: 4px;
  padding: 0 8px;
  border-radius: 999px;
  background: var(--accent);
  color: #ffffff;
  font-size: 0.76rem;
  font-weight: 900;
  white-space: nowrap;
}

.viewer-performance-button .lucide,
.viewer-performance-button [data-lucide] {
  width: 15px;
  height: 15px;
}

.viewer-favorite-button {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.viewer-favorite-button:hover,
.viewer-favorite-button:focus-visible,
.viewer-favorite-button.is-active {
  background: #fff4d7;
  color: #bd7a00;
  outline: none;
}

.viewer-favorite-button.is-active .lucide,
.viewer-favorite-button.is-active [data-lucide] {
  fill: currentColor;
}

.viewer-favorite-button .lucide,
.viewer-favorite-button [data-lucide] {
  width: 20px;
  height: 20px;
}

.viewer-dialog.is-performance-mode .viewer-topbar {
  min-height: calc(38px + env(safe-area-inset-top));
  border-bottom: 0;
  background: rgba(255, 255, 255, 0.72);
}

.viewer-dialog.is-performance-mode .viewer-back-button,
.viewer-dialog.is-performance-mode .viewer-more {
  display: none;
}

.viewer-dialog.is-performance-mode .viewer-pages {
  padding-top: calc(38px + env(safe-area-inset-top));
  scroll-padding-top: calc(38px + env(safe-area-inset-top));
}

.viewer-back-button {
  display: inline-flex;
  align-items: center;
  justify-self: start;
  min-width: max-content;
  min-height: 38px;
  flex-wrap: nowrap;
  gap: 2px;
  padding: 0 10px 0 6px;
  border-radius: 8px;
  background: transparent;
  color: var(--accent-strong);
  font-size: 0.92rem;
  font-weight: 900;
  line-height: 1;
  overflow-wrap: normal;
  white-space: nowrap;
  word-break: keep-all;
  writing-mode: horizontal-tb;
}

.viewer-back-button > span {
  display: inline-block;
  flex: 0 0 auto;
  overflow-wrap: normal;
  white-space: nowrap;
  word-break: keep-all;
  writing-mode: horizontal-tb;
}

/* Android 原生查看器仅显示返回箭头，彻底避免窄屏和大字体下的文字挤压。 */
:root.native-android .viewer-back-button {
  width: 38px;
  min-width: 38px;
  padding: 0;
  justify-content: center;
}

:root.native-android .viewer-back-button > span {
  display: none;
}

.viewer-back-button:hover,
.viewer-back-button:focus-visible {
  background: var(--accent-soft);
  outline: none;
}

.viewer-back-button .lucide,
.viewer-back-button [data-lucide] {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
}

.viewer-pages {
  display: block;
  box-sizing: border-box;
  width: 100%;
  height: 100%;
  overflow: auto;
  overscroll-behavior: none;
  padding: var(--viewer-topbar-height) 0 0;
  scroll-padding-top: var(--viewer-topbar-height);
  background: #ffffff;
  scrollbar-width: none;
  -ms-overflow-style: none;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-y;
  --viewer-zoom: 1;
}

.viewer-dialog::-webkit-scrollbar,
.viewer-surface::-webkit-scrollbar,
.viewer-pages::-webkit-scrollbar {
  width: 0;
  height: 0;
  display: none;
}

.viewer-pages.is-zoomed,
.viewer-pages.is-pinching {
  cursor: grab;
  touch-action: none;
}

.viewer-pages.is-dragging {
  cursor: grabbing;
}

.viewer-pages-content {
  position: relative;
  display: block;
  box-sizing: border-box;
  width: 100%;
  min-width: 100%;
}

.viewer-pages.is-horizontal-mode {
  display: flex;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  touch-action: pan-x;
}

.viewer-pages.is-horizontal-mode .viewer-pages-content {
  display: flex;
  flex: 0 0 auto;
  width: max-content;
  min-width: 100%;
  height: 100%;
}

.viewer-pages.is-horizontal-mode.is-zoomed {
  overflow: auto;
  scroll-snap-type: none;
  touch-action: none;
}

.viewer-dialog.is-piano-open .viewer-pages {
  padding-bottom: calc(var(--viewer-piano-height, 210px) + env(safe-area-inset-bottom) + 16px);
  scroll-padding-bottom: calc(var(--viewer-piano-height, 210px) + env(safe-area-inset-bottom) + 16px);
}

.viewer-dialog.is-piano-open .viewer-pages.is-horizontal-mode,
.viewer-dialog.is-piano-open .viewer-pages.viewer-horizontal,
.viewer-dialog.is-piano-open .viewer-pages {
  overflow-y: auto;
}

.viewer-dialog.is-piano-open .viewer-pages.is-horizontal-mode {
  touch-action: pan-x pan-y;
}

.viewer-piano-panel {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 40;
  box-sizing: border-box;
  height: var(--viewer-piano-height, 210px);
  padding-bottom: env(safe-area-inset-bottom);
  border-top: 1px solid var(--line);
  background: var(--surface-strong);
  box-shadow: 0 -12px 30px rgba(0, 0, 0, 0.12);
}

.viewer-piano-panel[hidden] {
  display: none !important;
}

.viewer-piano-panel .piano {
  height: 100%;
  border-radius: 0;
}

.viewer-more-menu .viewer-piano-button.is-active,
.viewer-more-menu .viewer-metronome-button.is-active {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

/* ---------- 节拍器面板 ---------- */
.viewer-dialog.is-metronome-open .viewer-pages {
  padding-bottom: calc(var(--viewer-metronome-height, 196px) + env(safe-area-inset-bottom) + 16px);
  scroll-padding-bottom: calc(var(--viewer-metronome-height, 196px) + env(safe-area-inset-bottom) + 16px);
}

.viewer-dialog.is-metronome-open .viewer-pages.is-horizontal-mode,
.viewer-dialog.is-metronome-open .viewer-pages {
  overflow-y: auto;
}

.viewer-metronome-panel {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 40;
  box-sizing: border-box;
  height: var(--viewer-metronome-height, 196px);
  padding: 14px 16px calc(14px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--line);
  background: var(--surface-strong);
  box-shadow: 0 -12px 30px rgba(0, 0, 0, 0.12);
}

.viewer-metronome-panel[hidden] {
  display: none !important;
}

.metronome {
  display: flex;
  flex-direction: column;
  gap: 14px;
  width: min(560px, 100%);
  height: 100%;
  margin: 0 auto;
  color: var(--ink);
  -webkit-user-select: none;
  user-select: none;
}

.metronome-main {
  display: flex;
  align-items: center;
  gap: 14px;
}

.metronome-play {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 8px 18px rgba(15, 118, 110, 0.28);
  transition: transform 0.08s ease, background 0.15s ease;
}

.metronome-play:active {
  transform: scale(0.94);
}

.metronome-play.is-running {
  background: var(--danger, #dc2626);
  box-shadow: 0 8px 18px rgba(220, 38, 38, 0.28);
}

.metronome-play .lucide,
.metronome-play [data-lucide] {
  width: 26px;
  height: 26px;
}

.metronome-tempo {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 0 0 auto;
  min-width: 132px;
}

.metronome-bpm-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.metronome-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--ink);
  font-size: 20px;
  font-weight: 800;
  line-height: 1;
}

.metronome-step:active {
  transform: scale(0.92);
  background: var(--accent-soft);
}

.metronome-bpm {
  min-width: 56px;
  text-align: center;
  font-size: 2rem;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
}

.metronome-bpm-unit {
  margin-top: 2px;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.metronome-beats {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1 1 auto;
  flex-wrap: wrap;
}

.metronome-beat-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--line);
  transition: transform 0.05s ease, background 0.05s ease;
}

.metronome-beat-dot.is-accent {
  background: color-mix(in srgb, var(--accent) 55%, var(--line));
}

.metronome-beat-dot.is-active {
  background: var(--accent);
  transform: scale(1.35);
}

.metronome-beat-dot.is-active.is-accent {
  background: var(--danger, #dc2626);
}

.metronome-slider {
  width: 100%;
  height: 30px;
  margin: 0;
  accent-color: var(--accent);
  touch-action: pan-x;
  cursor: pointer;
}

.metronome-meter {
  display: flex;
  align-items: center;
  gap: 10px;
}

.metronome-meter-label {
  flex: 0 0 auto;
  font-size: 0.84rem;
  font-weight: 800;
  color: var(--muted);
}

.metronome-meter-options {
  display: flex;
  gap: 8px;
  flex: 1 1 auto;
}

.metronome-meter-button {
  flex: 1 1 0;
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--ink);
  font-size: 0.95rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.metronome-meter-button.is-active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-strong);
}

:root[data-theme="dark"] .metronome-step,
:root[data-theme="dark"] .metronome-meter-button {
  background: #25221b;
  border-color: #3a352b;
  color: var(--ink);
}

.viewer-page {
  display: grid;
  place-items: center;
  width: 100%;
  min-height: calc(100vh - var(--viewer-topbar-height));
  min-height: calc(100dvh - var(--viewer-topbar-height));
  margin: 0;
  padding: 0;
  min-width: 100%;
}

.viewer-pages.has-multiple-pages .viewer-page {
  display: block;
  width: calc(100vw * var(--viewer-zoom));
  min-width: 100%;
  /* 保持图片原始高度与旧版紧凑间距；矮页面的页码连续性由滚动逻辑保证。 */
  min-height: 0;
}

/* 懒加载尚未就绪的竖向多页：预留约一屏高度，避免布局塌陷导致滚动错乱、页码跳变。 */
.viewer-pages.has-multiple-pages .viewer-page.is-page-pending {
  min-height: calc(100vh - var(--viewer-topbar-height));
  min-height: calc(100dvh - var(--viewer-topbar-height));
}

.viewer-pages.is-horizontal-mode .viewer-page {
  display: grid;
  place-items: center;
  flex: 0 0 calc(100vw * var(--viewer-zoom));
  width: calc(100vw * var(--viewer-zoom));
  min-width: calc(100vw * var(--viewer-zoom));
  min-height: calc((100vh - var(--viewer-topbar-height)) * var(--viewer-zoom));
  min-height: calc((100dvh - var(--viewer-topbar-height)) * var(--viewer-zoom));
  scroll-snap-align: start;
  scroll-snap-stop: always;
}

.viewer-image-frame {
  display: grid;
  place-items: center;
  width: calc(100vw * var(--viewer-zoom));
  min-width: 100%;
  height: calc((100vh - var(--viewer-topbar-height)) * var(--viewer-zoom));
  height: calc((100dvh - var(--viewer-topbar-height)) * var(--viewer-zoom));
  background: #ffffff;
}

.viewer-pages.has-multiple-pages .viewer-image-frame {
  display: block;
  width: calc(100vw * var(--viewer-zoom));
  min-width: 100%;
  height: auto;
  min-height: 0;
}

.viewer-pages.is-horizontal-mode .viewer-image-frame {
  display: grid;
  place-items: center;
  width: calc(100vw * var(--viewer-zoom));
  min-width: calc(100vw * var(--viewer-zoom));
  height: calc((100vh - var(--viewer-topbar-height)) * var(--viewer-zoom));
  height: calc((100dvh - var(--viewer-topbar-height)) * var(--viewer-zoom));
}

.viewer-image-frame img {
  width: calc(100vw * var(--viewer-zoom));
  max-width: none;
  height: calc((100vh - var(--viewer-topbar-height)) * var(--viewer-zoom));
  height: calc((100dvh - var(--viewer-topbar-height)) * var(--viewer-zoom));
  object-fit: contain;
  border: 0;
  background: #ffffff;
  user-select: none;
  -webkit-user-drag: none;
}

.viewer-pages.has-multiple-pages .viewer-image-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

.viewer-pages.is-horizontal-mode .viewer-image-frame img {
  width: calc(100vw * var(--viewer-zoom));
  height: calc((100vh - var(--viewer-topbar-height)) * var(--viewer-zoom));
  height: calc((100dvh - var(--viewer-topbar-height)) * var(--viewer-zoom));
}

/*
 * Android 原生应用横屏时按屏幕横向宽度展示竖版歌谱。
 * 默认查看器使用 contain 将整页限制在可视高度内，横屏后会造成“歌谱长边等于
 * 屏幕短边”、两侧大量留白。这里只覆盖 native-android，Safari/PWA 保持原样。
 */
@media (orientation: landscape) {
  :root.native-android .viewer-pages.is-horizontal-mode {
    overflow-x: auto;
    overflow-y: auto;
    touch-action: pan-x pan-y;
  }

  :root.native-android .viewer-pages.is-horizontal-mode.is-zoomed,
  :root.native-android .viewer-pages.is-horizontal-mode.is-pinching {
    touch-action: none;
  }

  :root.native-android .viewer-pages.is-horizontal-mode .viewer-pages-content {
    align-items: flex-start;
    height: auto;
    min-height: 100%;
  }

  :root.native-android .viewer-page,
  :root.native-android .viewer-image-frame,
  :root.native-android .viewer-page-shell,
  :root.native-android .viewer-pages.is-horizontal-mode .viewer-page,
  :root.native-android .viewer-pages.is-horizontal-mode .viewer-image-frame,
  :root.native-android .viewer-pages.is-horizontal-mode .viewer-page-shell {
    height: auto;
  }

  :root.native-android .viewer-page,
  :root.native-android .viewer-pages.is-horizontal-mode .viewer-page {
    min-height: 0;
  }

  :root.native-android .viewer-image-frame img,
  :root.native-android .viewer-pages.has-multiple-pages .viewer-image-frame img,
  :root.native-android .viewer-pages.is-horizontal-mode .viewer-image-frame img {
    display: block;
    width: 100%;
    height: auto;
    object-fit: contain;
  }
}

:root[data-theme="dark"] .topbar,
:root[data-theme="dark"] .bottom-nav,
:root[data-theme="dark"] .viewer-topbar {
  border-color: rgba(43, 61, 57, 0.92);
  background: rgba(18, 29, 27, 0.94);
}

:root[data-theme="dark"] .account-button,
:root[data-theme="dark"] .searchbar,
:root[data-theme="dark"] .library-filter-tabs,
:root[data-theme="dark"] .library-sort select,
:root[data-theme="dark"] .score-card,
:root[data-theme="dark"] .setlist-card,
:root[data-theme="dark"] .setlist-score-option,
:root[data-theme="dark"] .setlist-order-row,
:root[data-theme="dark"] .page-manager-row,
:root[data-theme="dark"] .page-manager-thumb,
:root[data-theme="dark"] .viewer-page-indicator,
:root[data-theme="dark"] .viewer-favorite-button,
:root[data-theme="dark"] .mine-strip-button,
:root[data-theme="dark"] .mine-auth-panel,
:root[data-theme="dark"] .field input,
:root[data-theme="dark"] .field select,
:root[data-theme="dark"] .field textarea,
:root[data-theme="dark"] .folder-select-button,
:root[data-theme="dark"] .folder-select-options,
:root[data-theme="dark"] .profile-contact-row,
:root[data-theme="dark"] .profile-birthday-button,
:root[data-theme="dark"] .auth-surface,
:root[data-theme="dark"] .share-surface,
:root[data-theme="dark"] .choice-surface,
:root[data-theme="dark"] .folder-surface,
:root[data-theme="dark"] .share-option,
:root[data-theme="dark"] .share-search,
:root[data-theme="dark"] .choice-button,
:root[data-theme="dark"] .source-button,
:root[data-theme="dark"] .pending-area,
:root[data-theme="dark"] .pending-thumb,
:root[data-theme="dark"] .confirm-surface,
:root[data-theme="dark"] .empty-state,
:root[data-theme="dark"] .preference-choice-button {
  background: var(--surface);
  color: var(--ink);
}

:root[data-theme="dark"] .profile-screen {
  background-color: var(--app-bg);
  background-image: linear-gradient(180deg, #151513 0%, #11110f 58%, #141412 100%);
}

:root[data-theme="dark"] .setlist-card-icon,
:root[data-theme="dark"] .setlist-order-row strong {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

:root[data-theme="dark"] .score-preview {
  border-color: #314541;
  background: #f8fbfa;
}

:root[data-theme="dark"] .folder-preview {
  border-color: rgba(244, 199, 118, 0.44);
  background: linear-gradient(180deg, #f8df9f, #c88b2e);
}

:root[data-theme="dark"] .mine-strip-button:hover,
:root[data-theme="dark"] .mine-strip-button:focus-visible,
:root[data-theme="dark"] .library-filter-button:hover,
:root[data-theme="dark"] .library-filter-button:focus-visible,
:root[data-theme="dark"] .library-filter-button.is-active,
:root[data-theme="dark"] .choice-button:hover,
:root[data-theme="dark"] .choice-button:focus-visible,
:root[data-theme="dark"] .source-button:hover,
:root[data-theme="dark"] .source-button:focus-visible,
:root[data-theme="dark"] .preference-choice-button:hover,
:root[data-theme="dark"] .preference-choice-button:focus-visible,
:root[data-theme="dark"] .preference-choice-button.is-active {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

:root[data-theme="dark"] .folder-select-button:hover,
:root[data-theme="dark"] .folder-select-button:focus-visible,
:root[data-theme="dark"] .folder-select.is-open .folder-select-button,
:root[data-theme="dark"] .folder-select-option:hover,
:root[data-theme="dark"] .folder-select-option:focus-visible,
:root[data-theme="dark"] .folder-select-option.is-selected {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

:root[data-theme="dark"] .preference-choice-icon,
:root[data-theme="dark"] .mine-strip-icon {
  background: #163d37;
}

:root[data-theme="dark"] .danger-button,
:root[data-theme="dark"] .danger-choice-button,
:root[data-theme="dark"] .confirm-mark {
  background: rgba(255, 138, 126, 0.16);
  color: var(--danger);
}

:root[data-theme="dark"] .more-button {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

:root[data-theme="dark"] .viewer-favorite-button:hover,
:root[data-theme="dark"] .viewer-favorite-button:focus-visible,
:root[data-theme="dark"] .viewer-favorite-button.is-active,
:root[data-theme="dark"] .score-favorite-mark {
  background: rgba(189, 122, 0, 0.22);
  color: #ffd98a;
}

:root[data-theme="dark"] .cancel-delete-button,
:root[data-theme="dark"] .share-select-all,
:root[data-theme="dark"] .share-code-panel,
:root[data-theme="dark"] .profile-link-button {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

:root[data-theme="dark"] .copy-code-button {
  border-color: rgba(110, 231, 216, 0.28);
  background: rgba(18, 29, 27, 0.88);
  color: var(--accent-strong);
}

:root[data-theme="dark"] .viewer-dialog,
:root[data-theme="dark"] .viewer-dialog::backdrop,
:root[data-theme="dark"] .viewer-surface,
:root[data-theme="dark"] .viewer-pages {
  background: #0f0f0d;
  color: var(--ink);
}

[data-lucide],
.lucide {
  width: 20px;
  height: 20px;
  stroke-width: 2;
}

@media (max-width: 520px) {
  .library-filter-bar {
    align-items: center;
    flex-direction: row;
    gap: 8px;
  }

  .library-filter-tabs {
    width: auto;
    flex: 0 1 auto;
  }

  .library-filter-button {
    flex: 1 1 0;
    padding: 0 8px;
  }

  .library-sort {
    width: 100%;
  }

  .library-sort select {
    width: 100%;
    max-width: none;
  }
}

@media (max-width: 900px) {
  .workspace {
    padding: 14px 10px 108px;
  }

  .setlist-editor-grid {
    grid-template-columns: 1fr;
  }

  .upload-tool {
    position: static;
  }

  .upload-screen {
    padding: 16px;
    padding-bottom: 40px;
  }

}

@media (max-width: 560px) {
  .topbar {
    min-height: 72px;
    padding: 12px 14px;
  }

  .brand-mark {
    width: 42px;
    height: 42px;
  }

  .brand-lockup h1 {
    font-size: 1.24rem;
  }

  .install-button {
    width: 40px;
    padding: 0;
  }

  .install-button span {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .workspace {
    padding: 14px 14px 112px;
  }

  .setlist-head {
    align-items: center;
    flex-direction: row;
    justify-content: space-between;
    gap: 10px;
  }

  .setlist-create-button {
    position: static;
    inset: auto;
    flex: none;
    width: auto;
    justify-self: end;
    box-shadow: 0 10px 22px rgba(37, 99, 235, 0.16);
  }

  .setlist-card {
    grid-template-columns: 38px minmax(0, 1fr);
  }

  .setlist-card-actions {
    grid-column: 1 / -1;
    justify-items: end;
  }

  .source-group {
    grid-template-columns: 1fr;
  }

  .source-button {
    grid-template-columns: 24px 1fr;
    justify-items: start;
    min-height: 52px;
    padding: 10px 14px;
  }

}

/* 2026 visual refresh: general-purpose sheet music app */
body {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.74), rgba(247, 245, 239, 0.96)),
    repeating-linear-gradient(
      180deg,
      transparent 0,
      transparent 31px,
      rgba(31, 41, 51, 0.025) 32px,
      transparent 33px
    );
}

:root[data-theme="dark"] body {
  background:
    linear-gradient(180deg, rgba(15, 23, 42, 0.98), rgba(17, 24, 39, 0.98)),
    repeating-linear-gradient(
      180deg,
      transparent 0,
      transparent 31px,
      rgba(147, 197, 253, 0.035) 32px,
      transparent 33px
    );
}

button,
.score-card,
.setlist-card,
.mine-strip-button,
.choice-button,
.source-button,
.preference-choice-button,
.share-option {
  transition:
    transform 0.16s ease,
    border-color 0.16s ease,
    background-color 0.16s ease,
    color 0.16s ease,
    box-shadow 0.16s ease;
}

button:active,
.score-card:active,
.setlist-card:active {
  transform: translateY(1px);
}

.topbar {
  min-height: calc(76px + env(safe-area-inset-top));
  padding: calc(12px + env(safe-area-inset-top)) 14px 12px;
  border-bottom: 1px solid rgba(229, 231, 235, 0.9);
  background: #fffdf8;
  box-shadow: 0 10px 30px rgba(31, 41, 51, 0.05);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

.brand-lockup {
  gap: 12px;
}

.topbar-actions {
  gap: 8px;
}

.topbar-action-button {
  width: 44px;
  height: 44px;
  border: 1px solid rgba(37, 99, 235, 0.12);
  border-radius: 14px;
  background: rgba(234, 241, 255, 0.92);
  color: var(--accent-strong);
  box-shadow: none;
}

.topbar-action-button:hover,
.topbar-action-button:focus-visible {
  background: var(--accent);
  color: #ffffff;
}

.brand-mark {
  position: relative;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.18), transparent),
    linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.2);
}

.brand-mark img {
  display: none;
}

.brand-mark::before {
  content: "♬";
  color: #ffffff;
  font-size: 1.42rem;
  font-weight: 900;
  line-height: 1;
}

.brand-lockup h1 {
  color: var(--ink);
  font-size: 1.42rem;
  font-weight: 900;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand-lockup p,
.library-head p,
.status-message,
.setlist-head p {
  color: var(--muted);
}

.brand-lockup p {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.install-button,
.primary-button,
.confirm-delete-button.folder-save-button {
  min-height: 44px;
  border-radius: var(--radius-md);
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.18);
}

.install-button:hover,
.install-button:focus-visible,
.primary-button:hover,
.primary-button:focus-visible,
.confirm-delete-button.folder-save-button:hover,
.confirm-delete-button.folder-save-button:focus-visible {
  background: var(--accent-strong);
  box-shadow: 0 14px 32px rgba(37, 99, 235, 0.22);
}

.workspace {
  width: min(1180px, 100%);
  padding: 18px 16px calc(76px + env(safe-area-inset-bottom));
}

.library-panel,
.setlist-panel,
.mine-panel {
  width: min(860px, 100%);
}

.library-head,
.setlist-head,
.mine-head {
  margin-bottom: 12px;
}

#libraryScreen .library-head {
  display: none;
}

.library-head h2,
.setlist-head h2,
.mine-head h2,
.tool-head h2 {
  color: var(--ink);
  font-size: 1.24rem;
  font-weight: 900;
}

.library-actions {
  gap: 6px;
}

.icon-button {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  color: var(--muted);
}

.icon-button:hover,
.icon-button:focus-visible {
  background: var(--accent-soft);
  color: var(--accent-strong);
  outline: none;
}

.searchbar {
  grid-template-columns: 22px minmax(0, 1fr) 44px;
  height: 58px;
  margin: 14px 0 14px;
  padding: 0 8px 0 16px;
  border-color: rgba(37, 99, 235, 0.12);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow-soft);
}

.searchbar input {
  height: 48px;
  color: var(--ink);
  font-size: 1rem;
  font-weight: 700;
}

.searchbar input::placeholder {
  color: #9aa4b2;
  font-weight: 650;
}

.searchbar:focus-within {
  border-color: rgba(37, 99, 235, 0.46);
  box-shadow:
    0 0 0 4px rgba(37, 99, 235, 0.1),
    var(--shadow-soft);
}

.library-filter-bar {
  align-items: center;
  justify-content: flex-start;
  gap: 10px;
  margin: 0 0 18px;
}

.library-filter-tabs {
  gap: 4px;
  padding: 4px;
  border-color: rgba(229, 231, 235, 0.9);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: none;
}

.library-filter-button {
  min-height: 36px;
  padding: 0 13px;
  background: transparent;
  color: var(--muted);
  font-size: 0.83rem;
  font-weight: 850;
}

.library-filter-button:hover,
.library-filter-button:focus-visible,
.library-filter-button.is-active {
  background: var(--accent);
  color: #ffffff;
}

.library-sort select {
  min-height: 44px;
  max-width: 138px;
  border-color: rgba(229, 231, 235, 0.95);
  background:
    linear-gradient(45deg, transparent 50%, currentColor 50%) calc(100% - 16px) 18px / 6px 6px no-repeat,
    linear-gradient(135deg, currentColor 50%, transparent 50%) calc(100% - 10px) 18px / 6px 6px no-repeat,
    rgba(255, 255, 255, 0.88);
  color: var(--ink);
  box-shadow: none;
}

.library-sort select:focus-visible {
  border-color: rgba(37, 99, 235, 0.42);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.score-grid {
  gap: 10px;
}

.score-card {
  position: relative;
  align-content: start;
  gap: 6px;
  padding: 8px 7px 9px;
  border-color: rgba(229, 231, 235, 0.96);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 10px 24px rgba(31, 41, 51, 0.07);
}

.score-card:hover,
.score-card:focus-within {
  border-color: rgba(37, 99, 235, 0.24);
  box-shadow: var(--shadow-card);
}

.score-preview {
  width: min(100%, 86px);
  border-color: #e7e9ee;
  border-radius: var(--radius-sm);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(255, 253, 248, 0.88)),
    repeating-linear-gradient(
      180deg,
      transparent 0,
      transparent 10px,
      rgba(31, 41, 51, 0.08) 11px,
      transparent 12px
    );
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.55),
    0 8px 18px rgba(31, 41, 51, 0.08);
}

.score-preview::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: inset 8px 0 0 rgba(37, 99, 235, 0.08);
  pointer-events: none;
}

.score-preview img {
  background: #fffdf8;
}

.folder-preview {
  border-color: rgba(20, 184, 166, 0.22);
  background:
    linear-gradient(180deg, rgba(20, 184, 166, 0.12), rgba(37, 99, 235, 0.08)),
    var(--surface-strong);
  color: var(--accent-strong);
}

.folder-preview::after {
  display: none;
}

.score-name {
  min-height: 2.45em;
  color: var(--ink);
  font-weight: 850;
}

.score-detail {
  color: var(--muted);
  font-weight: 700;
}

.score-favorite-mark,
.viewer-favorite-button:hover,
.viewer-favorite-button:focus-visible,
.viewer-favorite-button.is-active {
  background: #fff7dd;
  color: var(--warn);
}

.more-button {
  width: min(100%, 82px);
  min-height: 44px;
  border-radius: var(--radius-sm);
  background: #eff5ff;
  color: var(--accent-strong);
  font-weight: 850;
}

.more-button:hover,
.more-button:focus-visible {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.bottom-nav {
  gap: 6px;
  height: calc(58px + env(safe-area-inset-bottom));
  min-height: 0;
  padding: 4px 12px env(safe-area-inset-bottom);
  border-color: rgba(229, 231, 235, 0.86);
  background: #ffffff;
  box-shadow: 0 -10px 28px rgba(23, 33, 31, 0.1);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

.bottom-nav-button {
  min-height: 50px;
  border-radius: var(--radius-md);
  color: var(--muted);
}

.bottom-nav-button:hover,
.bottom-nav-button:focus-visible,
.bottom-nav-button.is-active {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.fab-button {
  width: 154px;
  height: 54px;
  aspect-ratio: auto;
  right: 22px;
  right: calc(22px + env(safe-area-inset-right));
  bottom: 84px;
  bottom: calc(84px + env(safe-area-inset-bottom));
  border-radius: 18px;
  background: linear-gradient(135deg, var(--accent), #1d4ed8);
  color: #ffffff;
  box-shadow: var(--shadow-float);
}

.fab-art,
.fab-fallback {
  display: none !important;
}

.fab-button::before {
  content: "+";
  position: absolute;
  inset: auto;
  left: 12px;
  top: 50%;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  transform: translateY(-50%);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
  color: #ffffff;
  font-size: 1.45rem;
  font-weight: 900;
  line-height: 1;
  pointer-events: none;
}

.fab-button::after {
  content: "添加歌谱";
  position: absolute;
  top: 50%;
  right: 14px;
  z-index: 2;
  width: auto;
  transform: translateY(-50%);
  color: #ffffff;
  font-size: 0.96rem;
  font-weight: 900;
  line-height: 1;
  text-shadow: none;
  pointer-events: none;
}

.fab-button:hover,
.fab-button:focus-visible {
  filter: none;
  box-shadow: 0 20px 48px rgba(37, 99, 235, 0.28);
}

.fab-button.is-dragging {
  filter: none;
  box-shadow: 0 22px 52px rgba(37, 99, 235, 0.32);
}

.setlist-panel {
  gap: 16px;
}

.setlist-card {
  min-height: 80px;
  padding: 12px;
  border-color: rgba(229, 231, 235, 0.96);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow-soft);
}

.setlist-card:hover,
.setlist-card:focus-within {
  border-color: rgba(37, 99, 235, 0.24);
  box-shadow: var(--shadow-card);
}

.setlist-card-icon,
.mine-strip-icon,
.preference-choice-icon {
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.setlist-create-button {
  right: 20px;
  right: calc(20px + env(safe-area-inset-right));
  bottom: 86px;
  bottom: calc(86px + env(safe-area-inset-bottom));
  border-radius: var(--radius-md);
}

.mine-panel {
  min-height: calc(100vh - 236px);
  min-height: calc(100dvh - 236px);
}

.mine-menu {
  gap: 12px;
}

.mine-strip-button,
.mine-auth-panel,
.preference-choice-button,
.profile-contact-row {
  border-color: rgba(229, 231, 235, 0.96);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow-soft);
}

.mine-strip-button {
  min-height: 60px;
  padding: 0 14px;
}

.mine-strip-button:hover,
.mine-strip-button:focus-visible {
  border-color: rgba(37, 99, 235, 0.28);
  background: #ffffff;
  color: var(--accent-strong);
}

.mine-auth-panel {
  padding: 18px;
}

.field {
  color: var(--ink);
  font-weight: 850;
}

.field input,
.field select,
.field textarea,
.profile-birthday-button,
.folder-select-button {
  min-height: 46px;
  border-color: rgba(229, 231, 235, 0.96);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.96);
  color: var(--ink);
}

.field input:focus,
.field select:focus,
.field textarea:focus,
.folder-select-button:focus-visible {
  border-color: rgba(37, 99, 235, 0.48);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.source-button,
.choice-button,
.setlist-score-option,
.setlist-order-row,
.page-manager-row,
.share-option {
  min-height: 46px;
  border-color: rgba(229, 231, 235, 0.96);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.94);
}

.source-button:hover,
.source-button:focus-visible,
.choice-button:hover,
.choice-button:focus-visible,
.share-option:hover,
.share-option:focus-visible {
  border-color: rgba(37, 99, 235, 0.28);
  background: #f8fbff;
  color: var(--accent-strong);
}

.auth-dialog,
.share-dialog,
.choice-dialog,
.folder-dialog {
  border-radius: var(--radius-xl);
}

.auth-surface,
.share-surface,
.choice-surface,
.folder-surface,
.confirm-surface {
  border-color: rgba(229, 231, 235, 0.92);
  border-radius: var(--radius-xl);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 24px 70px rgba(31, 41, 51, 0.22);
}

.auth-head h2 {
  color: var(--ink);
  font-weight: 900;
}

.cancel-delete-button,
.profile-link-button,
.share-select-all,
.share-code-panel {
  border-radius: var(--radius-md);
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.confirm-delete-button {
  min-height: 44px;
  border-radius: var(--radius-md);
}

.danger-choice-button,
.delete-setlist-button {
  background: #fff1f2;
  color: var(--danger);
}

.viewer-topbar {
  border-color: rgba(229, 231, 235, 0.78);
  background: rgba(255, 255, 255, 0.86);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

.viewer-page-indicator,
.viewer-key-signature,
.viewer-favorite-button {
  border: 1px solid rgba(229, 231, 235, 0.92);
  background: rgba(255, 255, 255, 0.9);
}

.viewer-page-indicator {
  color: var(--ink);
}

.viewer-key-signature {
  color: var(--accent-strong);
}

.viewer-performance-button {
  background: var(--accent);
  box-shadow: 0 10px 22px rgba(37, 99, 235, 0.18);
}

.viewer-back-button {
  color: var(--accent-strong);
}

:root[data-theme="dark"] .topbar,
:root[data-theme="dark"] .bottom-nav,
:root[data-theme="dark"] .viewer-topbar {
  border-color: rgba(39, 52, 73, 0.86);
  background: rgba(17, 24, 39, 0.86);
}

:root[data-theme="dark"] .topbar-action-button {
  border-color: rgba(96, 165, 250, 0.2);
  background: rgba(96, 165, 250, 0.14);
  color: #bfdbfe;
}

:root[data-theme="dark"] .searchbar,
:root[data-theme="dark"] .library-filter-tabs,
:root[data-theme="dark"] .library-sort select,
:root[data-theme="dark"] .score-card,
:root[data-theme="dark"] .setlist-card,
:root[data-theme="dark"] .mine-strip-button,
:root[data-theme="dark"] .mine-auth-panel,
:root[data-theme="dark"] .auth-surface,
:root[data-theme="dark"] .share-surface,
:root[data-theme="dark"] .choice-surface,
:root[data-theme="dark"] .folder-surface,
:root[data-theme="dark"] .confirm-surface,
:root[data-theme="dark"] .source-button,
:root[data-theme="dark"] .choice-button,
:root[data-theme="dark"] .share-option,
:root[data-theme="dark"] .setlist-score-option,
:root[data-theme="dark"] .setlist-order-row,
:root[data-theme="dark"] .page-manager-row,
:root[data-theme="dark"] .preference-choice-button,
:root[data-theme="dark"] .profile-contact-row,
:root[data-theme="dark"] .field input,
:root[data-theme="dark"] .field select,
:root[data-theme="dark"] .field textarea,
:root[data-theme="dark"] .profile-birthday-button,
:root[data-theme="dark"] .folder-select-button,
:root[data-theme="dark"] .viewer-page-indicator,
:root[data-theme="dark"] .viewer-key-signature,
:root[data-theme="dark"] .viewer-favorite-button {
  border-color: rgba(39, 52, 73, 0.9);
  background: rgba(23, 32, 51, 0.94);
  color: var(--ink);
}

:root[data-theme="dark"] .score-preview {
  border-color: rgba(58, 73, 101, 0.92);
  background:
    linear-gradient(180deg, rgba(24, 34, 53, 0.82), rgba(17, 24, 39, 0.9)),
    repeating-linear-gradient(
      180deg,
      transparent 0,
      transparent 10px,
      rgba(147, 197, 253, 0.09) 11px,
      transparent 12px
    );
}

:root[data-theme="dark"] .score-preview img {
  background: #111827;
}

:root[data-theme="dark"] .folder-preview {
  background:
    linear-gradient(180deg, rgba(45, 212, 191, 0.12), rgba(96, 165, 250, 0.1)),
    var(--surface);
  color: var(--accent-strong);
}

:root[data-theme="dark"] .score-favorite-mark,
:root[data-theme="dark"] .viewer-favorite-button:hover,
:root[data-theme="dark"] .viewer-favorite-button:focus-visible,
:root[data-theme="dark"] .viewer-favorite-button.is-active,
:root[data-theme="dark"] .score-favorite-mark {
  background: rgba(245, 158, 11, 0.18);
  color: var(--warn);
}

:root[data-theme="dark"] .fab-button {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
}

@media (min-width: 760px) {
  .score-grid {
    gap: 14px;
  }

  .score-preview {
    width: min(100%, 112px);
  }
}

@media (min-width: 1040px) {
  .workspace {
    padding-inline: 28px;
  }

  .score-grid {
    gap: 16px;
  }

  .score-preview {
    width: min(100%, 132px);
  }
}

@media (max-width: 560px) {
  .topbar {
    min-height: calc(76px + env(safe-area-inset-top));
    padding: calc(12px + env(safe-area-inset-top)) 14px 12px;
  }

  .brand-mark {
    width: 44px;
    height: 44px;
  }

  .workspace {
    padding: 14px 12px 116px;
  }

  .searchbar {
    height: 56px;
  }

  .library-filter-bar {
    gap: 9px;
  }

  .library-filter-tabs {
    overflow-x: auto;
  }

  .library-filter-button {
    min-height: 38px;
  }

  .score-grid {
    gap: 8px;
  }

  .score-card {
    padding: 7px 5px 8px;
  }

  .score-preview {
    width: min(100%, 82px);
  }

  .score-name {
    font-size: clamp(0.66rem, 2.55vw, 0.82rem);
  }

  .more-button {
    width: min(100%, 74px);
    min-height: 44px;
  }

  .fab-button {
    width: 146px;
    height: 52px;
    right: 16px;
    right: calc(16px + env(safe-area-inset-right));
    bottom: 82px;
    bottom: calc(82px + env(safe-area-inset-bottom));
  }
}

/* 2026 library home refinement: mature sheet-music shelf */
#libraryScreen .library-panel {
  width: min(1120px, 100%);
}

.score-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 15px 12px;
  align-items: stretch;
}

.score-card {
  display: grid;
  grid-template-rows: auto minmax(2.6em, auto) auto auto;
  align-content: start;
  justify-items: stretch;
  gap: 7px;
  min-height: 0;
  padding: 9px 8px 10px;
  border-color: rgba(229, 231, 235, 0.9);
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(255, 253, 248, 0.98));
  box-shadow: 0 8px 20px rgba(31, 41, 51, 0.055);
}

.score-card:hover,
.score-card:focus-within {
  border-color: rgba(37, 99, 235, 0.2);
  box-shadow: 0 12px 26px rgba(31, 41, 51, 0.08);
}

.score-preview {
  width: 100%;
  max-width: none;
  aspect-ratio: 0.72;
  border-radius: 14px;
  border-color: rgba(209, 213, 219, 0.86);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(255, 251, 242, 0.96)),
    repeating-linear-gradient(
      180deg,
      transparent 0,
      transparent 12px,
      rgba(31, 41, 51, 0.075) 13px,
      transparent 14px
    );
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.65),
    0 8px 18px rgba(31, 41, 51, 0.07);
}

.score-preview::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 9px;
  border-radius: inherit;
  background: linear-gradient(180deg, rgba(37, 99, 235, 0.12), rgba(20, 184, 166, 0.11));
  pointer-events: none;
}

.score-preview::after {
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.52),
    inset 0 -18px 28px rgba(31, 41, 51, 0.035);
}

.score-preview img {
  position: relative;
  z-index: 1;
  object-fit: cover;
  background: #fffdf8;
}

.folder-card {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(248, 250, 252, 0.98));
}

.folder-preview {
  border-color: rgba(20, 184, 166, 0.18);
  background:
    radial-gradient(circle at 32% 24%, rgba(255, 255, 255, 0.72), transparent 35%),
    linear-gradient(180deg, rgba(20, 184, 166, 0.12), rgba(37, 99, 235, 0.08)),
    #f8fafc;
  color: #0f766e;
}

.folder-preview::before {
  width: 100%;
  border-radius: inherit;
  background:
    linear-gradient(180deg, rgba(20, 184, 166, 0.18), rgba(37, 99, 235, 0.08));
  opacity: 0.38;
}

.folder-preview::after {
  display: none;
}

.folder-preview .lucide,
.folder-preview [data-lucide] {
  width: clamp(32px, 9vw, 48px);
  height: clamp(32px, 9vw, 48px);
  filter: none;
  stroke-width: 1.65;
}

.score-name {
  display: -webkit-box;
  min-height: 2.6em;
  margin-top: 1px;
  overflow: hidden;
  color: var(--ink);
  font-size: clamp(0.78rem, 3.05vw, 0.98rem);
  font-weight: 850;
  line-height: 1.3;
  text-align: left;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.score-detail {
  overflow: hidden;
  color: var(--muted);
  font-size: clamp(0.66rem, 2.35vw, 0.82rem);
  font-weight: 650;
  line-height: 1.2;
  text-align: left;
  text-overflow: ellipsis;
}

.score-folder-location {
  display: flex;
  align-items: flex-start;
  gap: 4px;
  margin: -1px 0 0;
  color: var(--accent-strong);
  font-size: clamp(0.65rem, 2.25vw, 0.78rem);
  font-weight: 720;
  line-height: 1.25;
  text-align: left;
}

.score-folder-location .lucide,
.score-folder-location [data-lucide] {
  flex: 0 0 auto;
  width: 13px;
  height: 13px;
  margin-top: 1px;
  stroke-width: 2;
}

.score-folder-location span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.score-favorite-mark {
  top: 7px;
  right: 7px;
  z-index: 2;
  width: 21px;
  height: 21px;
  border: 1px solid rgba(245, 158, 11, 0.18);
  background: rgba(255, 251, 235, 0.94);
  color: var(--warn);
  box-shadow: 0 5px 12px rgba(146, 64, 14, 0.12);
}

.score-favorite-mark .lucide,
.score-favorite-mark [data-lucide] {
  width: 12px;
  height: 12px;
  stroke-width: 2.5;
}

.card-actions {
  display: flex;
  justify-content: flex-end;
  min-height: 28px;
}

.score-card .more-button {
  width: auto;
  min-width: 0;
  min-height: 0;
  height: 28px;
  gap: 3px;
  padding: 0 8px;
  border-radius: 999px;
  background: transparent;
  color: rgba(107, 114, 128, 0.82);
  font-size: 0.72rem;
  font-weight: 760;
}

.score-card .more-button .lucide,
.score-card .more-button [data-lucide] {
  width: 13px;
  height: 13px;
}

.score-card .more-button:hover,
.score-card .more-button:focus-visible {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.score-grid > .empty-state {
  min-height: min(440px, 58vh);
  padding: 34px 24px;
  border: 1px solid rgba(37, 99, 235, 0.13);
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(255, 253, 248, 0.95));
  box-shadow: 0 14px 34px rgba(31, 41, 51, 0.055);
}

.score-grid > .empty-state::before {
  content: "♬";
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  margin-bottom: 14px;
  border-radius: 18px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 1.55rem;
  font-weight: 900;
}

.score-grid > .empty-state strong {
  margin-bottom: 8px;
  font-size: 1.08rem;
  font-weight: 900;
}

.score-grid > .empty-state span {
  display: block;
  max-width: 18rem;
  margin: 0 auto;
  color: var(--muted);
  line-height: 1.55;
}

.empty-action-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  margin-top: 18px;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 850;
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.18);
}

.empty-action-button:hover,
.empty-action-button:focus-visible {
  background: var(--accent-strong);
  outline: none;
}

.fab-button {
  width: 142px;
  height: 50px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.96);
  box-shadow: 0 14px 30px rgba(37, 99, 235, 0.22);
}

.fab-button::before {
  left: 11px;
  width: 28px;
  height: 28px;
  background: rgba(255, 255, 255, 0.18);
  font-size: 1.35rem;
}

.fab-button::after {
  right: 15px;
  font-size: 0.92rem;
}

.bottom-nav {
  gap: 6px;
  height: calc(58px + env(safe-area-inset-bottom));
  min-height: 0;
  padding: 4px 12px env(safe-area-inset-bottom);
  border-top: 1px solid rgba(229, 231, 235, 0.86);
  background: #ffffff;
  box-shadow: 0 -10px 28px rgba(23, 33, 31, 0.1);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

.bottom-nav-button {
  min-height: 50px;
  align-self: start;
  border-radius: 999px;
  color: rgba(107, 114, 128, 0.78);
  font-weight: 760;
}

.bottom-nav-button .lucide,
.bottom-nav-button [data-lucide] {
  width: 21px;
  height: 21px;
  stroke-width: 2;
}

.bottom-nav-button:hover,
.bottom-nav-button:focus-visible,
.bottom-nav-button.is-active {
  background: rgba(37, 99, 235, 0.1);
  color: var(--accent-strong);
}

:root[data-theme="dark"] .score-card,
:root[data-theme="dark"] .folder-card {
  border-color: rgba(39, 52, 73, 0.88);
  background: linear-gradient(180deg, rgba(23, 32, 51, 0.96), rgba(17, 24, 39, 0.98));
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
}

:root[data-theme="dark"] .score-preview {
  border-color: rgba(71, 85, 105, 0.72);
  background:
    linear-gradient(180deg, rgba(30, 41, 59, 0.92), rgba(15, 23, 42, 0.96)),
    repeating-linear-gradient(
      180deg,
      transparent 0,
      transparent 12px,
      rgba(191, 219, 254, 0.09) 13px,
      transparent 14px
    );
}

:root[data-theme="dark"] .score-preview img {
  background: #111827;
}

:root[data-theme="dark"] .folder-preview {
  border-color: rgba(45, 212, 191, 0.18);
  background:
    radial-gradient(circle at 32% 24%, rgba(255, 255, 255, 0.08), transparent 35%),
    linear-gradient(180deg, rgba(45, 212, 191, 0.12), rgba(96, 165, 250, 0.1)),
    #172033;
  color: #5eead4;
}

:root[data-theme="dark"] .score-grid > .empty-state {
  border-color: rgba(96, 165, 250, 0.18);
  background: linear-gradient(180deg, rgba(23, 32, 51, 0.94), rgba(17, 24, 39, 0.96));
}

:root[data-theme="dark"] .bottom-nav {
  border-top-color: rgba(39, 52, 73, 0.82);
  background: rgba(15, 23, 42, 0.78);
  box-shadow: 0 -12px 30px rgba(0, 0, 0, 0.22);
}

:root[data-theme="dark"] .bottom-nav-button {
  color: rgba(168, 179, 195, 0.78);
}

:root[data-theme="dark"] .bottom-nav-button:hover,
:root[data-theme="dark"] .bottom-nav-button:focus-visible,
:root[data-theme="dark"] .bottom-nav-button.is-active {
  background: rgba(96, 165, 250, 0.16);
  color: #bfdbfe;
}

@media (min-width: 760px) {
  .score-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px 16px;
  }

  .score-card {
    padding: 11px 10px 12px;
  }
}

@media (min-width: 1040px) {
  .score-grid {
    grid-template-columns: repeat(auto-fill, minmax(142px, 1fr));
    gap: 20px 18px;
  }
}

@media (max-width: 380px) {
  .score-grid {
    gap: 13px 10px;
  }

  .score-card {
    padding: 8px 7px 9px;
    border-radius: 16px;
  }

  .score-name {
    font-size: 0.75rem;
  }

  .score-card .more-button {
    height: 26px;
    padding-inline: 7px;
  }
}

/* 2026 warm dark theme: night paper reading style */
:root[data-theme="dark"] body {
  background:
    radial-gradient(circle at 22% -10%, rgba(125, 211, 199, 0.06), transparent 34%),
    linear-gradient(180deg, #151513 0%, #11110f 54%, #141412 100%),
    repeating-linear-gradient(
      0deg,
      transparent 0,
      transparent 30px,
      rgba(242, 239, 232, 0.018) 31px,
      transparent 32px
    );
  color: var(--ink);
}

:root[data-theme="dark"] .app-shell {
  background: transparent;
}

:root[data-theme="dark"] .topbar {
  border-bottom-color: rgba(255, 255, 255, 0.08);
  background: rgba(20, 20, 18, 0.82);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.18);
  -webkit-backdrop-filter: blur(20px) saturate(1.08);
  backdrop-filter: blur(20px) saturate(1.08);
}

:root[data-theme="dark"] .brand-mark {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.1), transparent),
    linear-gradient(135deg, #3f5f86, #2f6f68);
  box-shadow: 0 12px 26px rgba(0, 0, 0, 0.2);
}

:root[data-theme="dark"] .topbar-action-button,
:root[data-theme="dark"] .icon-button {
  color: var(--muted);
}

:root[data-theme="dark"] .topbar-action-button {
  border-color: rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.045);
  box-shadow: none;
}

:root[data-theme="dark"] .topbar-action-button:hover,
:root[data-theme="dark"] .topbar-action-button:focus-visible,
:root[data-theme="dark"] .icon-button:hover,
:root[data-theme="dark"] .icon-button:focus-visible {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

:root[data-theme="dark"] .searchbar {
  border-color: rgba(255, 255, 255, 0.09);
  background: rgba(27, 28, 31, 0.88);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.16);
}

:root[data-theme="dark"] .searchbar:focus-within {
  border-color: rgba(110, 168, 255, 0.42);
  box-shadow:
    0 0 0 4px rgba(110, 168, 255, 0.1),
    0 12px 26px rgba(0, 0, 0, 0.18);
}

:root[data-theme="dark"] .searchbar input,
:root[data-theme="dark"] .field input,
:root[data-theme="dark"] .field select,
:root[data-theme="dark"] .field textarea,
:root[data-theme="dark"] .share-search input,
:root[data-theme="dark"] .setlist-search input {
  color: var(--ink);
  caret-color: var(--accent-strong);
}

:root[data-theme="dark"] .searchbar input::placeholder,
:root[data-theme="dark"] .field input::placeholder,
:root[data-theme="dark"] .field textarea::placeholder,
:root[data-theme="dark"] .share-search input::placeholder {
  color: rgba(170, 164, 154, 0.7);
}

:root[data-theme="dark"] .library-filter-tabs {
  border-color: rgba(255, 255, 255, 0.08);
  background: rgba(27, 28, 31, 0.72);
}

:root[data-theme="dark"] .library-filter-button {
  color: rgba(170, 164, 154, 0.86);
}

:root[data-theme="dark"] .library-filter-button:hover,
:root[data-theme="dark"] .library-filter-button:focus-visible,
:root[data-theme="dark"] .library-filter-button.is-active {
  background: rgba(110, 168, 255, 0.18);
  color: var(--accent-strong);
}

:root[data-theme="dark"] .score-card,
:root[data-theme="dark"] .folder-card,
:root[data-theme="dark"] .setlist-card,
:root[data-theme="dark"] .mine-strip-button,
:root[data-theme="dark"] .mine-auth-panel,
:root[data-theme="dark"] .preference-choice-button,
:root[data-theme="dark"] .profile-contact-row,
:root[data-theme="dark"] .source-button,
:root[data-theme="dark"] .choice-button,
:root[data-theme="dark"] .share-option,
:root[data-theme="dark"] .setlist-score-option,
:root[data-theme="dark"] .setlist-order-row,
:root[data-theme="dark"] .page-manager-row,
:root[data-theme="dark"] .page-manager-thumb,
:root[data-theme="dark"] .pending-area,
:root[data-theme="dark"] .pending-thumb {
  border-color: var(--line);
  background: linear-gradient(180deg, rgba(34, 35, 39, 0.9), rgba(27, 28, 31, 0.96));
  color: var(--ink);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.16);
}

:root[data-theme="dark"] .score-card:hover,
:root[data-theme="dark"] .score-card:focus-within,
:root[data-theme="dark"] .setlist-card:hover,
:root[data-theme="dark"] .setlist-card:focus-within,
:root[data-theme="dark"] .mine-strip-button:hover,
:root[data-theme="dark"] .mine-strip-button:focus-visible {
  border-color: rgba(110, 168, 255, 0.24);
  background: linear-gradient(180deg, rgba(39, 40, 44, 0.94), rgba(30, 31, 34, 0.98));
  box-shadow: 0 12px 26px rgba(0, 0, 0, 0.2);
}

:root[data-theme="dark"] .score-preview {
  border-color: rgba(219, 211, 195, 0.44);
  background:
    linear-gradient(180deg, rgba(253, 249, 240, 0.94), rgba(243, 238, 227, 0.98)),
    repeating-linear-gradient(
      180deg,
      transparent 0,
      transparent 12px,
      var(--paper-line) 13px,
      transparent 14px
    );
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.45),
    0 8px 18px rgba(0, 0, 0, 0.18);
}

:root[data-theme="dark"] .score-preview::before {
  background: linear-gradient(180deg, rgba(110, 168, 255, 0.18), rgba(125, 211, 199, 0.14));
}

:root[data-theme="dark"] .score-preview::after {
  box-shadow:
    inset 0 0 0 1px rgba(80, 70, 58, 0.08),
    inset 0 -18px 28px rgba(70, 55, 40, 0.055);
}

:root[data-theme="dark"] .score-preview img {
  background: var(--paper);
  filter: none;
}

:root[data-theme="dark"] .folder-preview {
  border-color: rgba(125, 211, 199, 0.24);
  background:
    radial-gradient(circle at 32% 24%, rgba(243, 238, 227, 0.22), transparent 35%),
    linear-gradient(180deg, rgba(125, 211, 199, 0.16), rgba(110, 168, 255, 0.1)),
    #242521;
  color: #9bd8ce;
}

:root[data-theme="dark"] .score-name,
:root[data-theme="dark"] .setlist-card h3,
:root[data-theme="dark"] .mine-head h2,
:root[data-theme="dark"] .auth-head h2,
:root[data-theme="dark"] .profile-page-head h2 {
  color: var(--ink);
}

/* 关于我们、投诉举报与合规信息 */
body.about-screen-open .bottom-nav,
body.about-screen-open .fab-button {
  display: none;
}

.about-page {
  padding-bottom: 18px;
}

.about-intro-card,
.about-section {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

.about-intro-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px;
}

.about-app-icon {
  flex: 0 0 auto;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  object-fit: cover;
  box-shadow: 0 5px 14px rgba(23, 33, 31, 0.14);
}

.about-intro-card h3,
.about-section h3 {
  margin: 0;
  color: var(--ink);
  font-size: 1rem;
}

.about-intro-card p,
.about-section-note {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

.about-section {
  overflow: hidden;
}

.about-section > h3,
.about-section > .about-section-note {
  margin-left: 16px;
  margin-right: 16px;
}

.about-section > h3 {
  margin-top: 16px;
  margin-bottom: 12px;
}

.about-section > .about-section-note {
  margin-top: -4px;
  margin-bottom: 12px;
}

.about-link-row,
.about-contact-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 24px;
  align-items: center;
  gap: 10px;
  min-height: 54px;
  padding: 0 16px;
  border-top: 1px solid var(--line);
  color: var(--ink);
  text-decoration: none;
}

.about-link-row > span,
.about-contact-row > span {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  gap: 10px;
  font-weight: 800;
}

.about-link-row .lucide,
.about-contact-row .lucide {
  width: 18px;
  height: 18px;
  color: var(--accent-strong);
}

.about-contact-row {
  grid-template-columns: 82px minmax(0, 1fr);
}

.about-contact-row b {
  overflow-wrap: anywhere;
  color: var(--accent-strong);
  font-size: 0.9rem;
  text-align: right;
}

.about-link-row:hover,
.about-link-row:focus-visible,
.about-contact-row:hover,
.about-contact-row:focus-visible {
  background: var(--accent-soft);
  outline: none;
}

.about-filing {
  padding: 16px;
  text-align: center;
}

.about-filing > h3 {
  margin: 0 0 8px;
}

.about-filing a {
  color: var(--accent-strong);
  font-size: 0.9rem;
  font-weight: 800;
  text-decoration: none;
}

:root[data-theme="dark"] .about-intro-card,
:root[data-theme="dark"] .about-section {
  background: var(--surface);
}

.auth-agreement-check {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.55;
}

.auth-agreement-check input {
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin: 3px 0 0;
  accent-color: var(--accent);
}

.auth-agreement-check a {
  color: var(--accent-strong);
  font-weight: 800;
  text-decoration: none;
}

:root[data-theme="dark"] .score-detail,
:root[data-theme="dark"] .brand-lockup p,
:root[data-theme="dark"] .setlist-head p,
:root[data-theme="dark"] .mine-auth-state,
:root[data-theme="dark"] .empty-state span,
:root[data-theme="dark"] .page-manager-body span {
  color: var(--muted);
}

:root[data-theme="dark"] .bottom-nav {
  border-top-color: rgba(255, 255, 255, 0.08);
  background: rgba(19, 19, 17, 0.78);
  box-shadow: 0 -10px 28px rgba(0, 0, 0, 0.22);
  -webkit-backdrop-filter: blur(22px) saturate(1.06);
  backdrop-filter: blur(22px) saturate(1.06);
}

:root[data-theme="dark"] .bottom-nav-button {
  color: rgba(170, 164, 154, 0.78);
}

:root[data-theme="dark"] .bottom-nav-button:hover,
:root[data-theme="dark"] .bottom-nav-button:focus-visible,
:root[data-theme="dark"] .bottom-nav-button.is-active {
  background: rgba(110, 168, 255, 0.16);
  color: var(--accent-strong);
}

:root[data-theme="dark"] .fab-button,
:root[data-theme="dark"] .primary-button,
:root[data-theme="dark"] .confirm-delete-button.folder-save-button,
:root[data-theme="dark"] .empty-action-button {
  background: #5f94e3;
  color: #f8f5ef;
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.24);
}

:root[data-theme="dark"] .fab-button:hover,
:root[data-theme="dark"] .fab-button:focus-visible,
:root[data-theme="dark"] .primary-button:hover,
:root[data-theme="dark"] .primary-button:focus-visible,
:root[data-theme="dark"] .empty-action-button:hover,
:root[data-theme="dark"] .empty-action-button:focus-visible {
  background: #74a6f1;
}

:root[data-theme="dark"] .auth-dialog::backdrop,
:root[data-theme="dark"] .share-dialog::backdrop,
:root[data-theme="dark"] .choice-dialog::backdrop,
:root[data-theme="dark"] .folder-dialog::backdrop,
:root[data-theme="dark"] .score-edit-dialog::backdrop,
:root[data-theme="dark"] .page-manager-dialog::backdrop,
:root[data-theme="dark"] .confirm-dialog::backdrop {
  background: rgba(8, 8, 7, 0.58);
}

:root[data-theme="dark"] .auth-surface,
:root[data-theme="dark"] .share-surface,
:root[data-theme="dark"] .choice-surface,
:root[data-theme="dark"] .folder-surface,
:root[data-theme="dark"] .confirm-surface,
:root[data-theme="dark"] .score-edit-surface,
:root[data-theme="dark"] .setlist-surface,
:root[data-theme="dark"] .page-manager-surface,
:root[data-theme="dark"] .profile-page,
:root[data-theme="dark"] .preferences-page,
:root[data-theme="dark"] .upload-tool {
  border-color: var(--line);
  background: linear-gradient(180deg, rgba(34, 35, 39, 0.98), rgba(27, 28, 31, 0.98));
  color: var(--ink);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
}

:root[data-theme="dark"] .profile-screen,
:root[data-theme="dark"] .preferences-screen {
  background:
    linear-gradient(180deg, #151513 0%, #11110f 62%, #141412 100%);
}

:root[data-theme="dark"] .field input,
:root[data-theme="dark"] .field select,
:root[data-theme="dark"] .field textarea,
:root[data-theme="dark"] .profile-birthday-button,
:root[data-theme="dark"] .folder-select-button,
:root[data-theme="dark"] .folder-select-options,
:root[data-theme="dark"] .share-search,
:root[data-theme="dark"] .library-sort select {
  border-color: var(--line);
  background: rgba(20, 21, 23, 0.92);
  color: var(--ink);
  box-shadow: none;
}

:root[data-theme="dark"] .field input:focus,
:root[data-theme="dark"] .field select:focus,
:root[data-theme="dark"] .field textarea:focus,
:root[data-theme="dark"] .profile-birthday-button:focus-visible,
:root[data-theme="dark"] .folder-select-button:focus-visible {
  border-color: rgba(110, 168, 255, 0.46);
  box-shadow: 0 0 0 4px rgba(110, 168, 255, 0.1);
}

:root[data-theme="dark"] .folder-select-button:hover,
:root[data-theme="dark"] .folder-select.is-open .folder-select-button,
:root[data-theme="dark"] .folder-select-option:hover,
:root[data-theme="dark"] .folder-select-option:focus-visible,
:root[data-theme="dark"] .folder-select-option.is-selected,
:root[data-theme="dark"] .preference-choice-button:hover,
:root[data-theme="dark"] .preference-choice-button:focus-visible,
:root[data-theme="dark"] .preference-choice-button.is-active,
:root[data-theme="dark"] .source-button:hover,
:root[data-theme="dark"] .source-button:focus-visible,
:root[data-theme="dark"] .choice-button:hover,
:root[data-theme="dark"] .choice-button:focus-visible,
:root[data-theme="dark"] .share-option:hover,
:root[data-theme="dark"] .share-option:focus-visible {
  border-color: rgba(110, 168, 255, 0.28);
  background: rgba(110, 168, 255, 0.11);
  color: var(--accent-strong);
}

:root[data-theme="dark"] .preference-choice-icon,
:root[data-theme="dark"] .mine-strip-icon,
:root[data-theme="dark"] .setlist-card-icon,
:root[data-theme="dark"] .score-grid > .empty-state::before {
  background: rgba(110, 168, 255, 0.13);
  color: var(--accent-strong);
}

:root[data-theme="dark"] .cancel-delete-button,
:root[data-theme="dark"] .share-select-all,
:root[data-theme="dark"] .share-code-panel,
:root[data-theme="dark"] .profile-link-button,
:root[data-theme="dark"] .copy-code-button,
:root[data-theme="dark"] .more-button,
:root[data-theme="dark"] .score-card .more-button {
  border-color: rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.045);
  color: var(--muted);
}

:root[data-theme="dark"] .copy-code-button:hover,
:root[data-theme="dark"] .copy-code-button:focus-visible,
:root[data-theme="dark"] .more-button:hover,
:root[data-theme="dark"] .more-button:focus-visible,
:root[data-theme="dark"] .score-card .more-button:hover,
:root[data-theme="dark"] .score-card .more-button:focus-visible {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

:root[data-theme="dark"] .score-grid > .empty-state {
  border-color: var(--line);
  background: linear-gradient(180deg, rgba(34, 35, 39, 0.88), rgba(27, 28, 31, 0.94));
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.18);
}

:root[data-theme="dark"] .score-favorite-mark,
:root[data-theme="dark"] .viewer-favorite-button:hover,
:root[data-theme="dark"] .viewer-favorite-button:focus-visible,
:root[data-theme="dark"] .viewer-favorite-button.is-active {
  border-color: rgba(245, 192, 106, 0.22);
  background: rgba(245, 192, 106, 0.17);
  color: var(--warn);
}

:root[data-theme="dark"] .danger-button,
:root[data-theme="dark"] .danger-choice-button,
:root[data-theme="dark"] .delete-setlist-button,
:root[data-theme="dark"] .page-manager-icon-button.is-danger,
:root[data-theme="dark"] .confirm-mark {
  background: rgba(255, 138, 138, 0.13);
  color: var(--danger);
}

:root[data-theme="dark"] .viewer-dialog,
:root[data-theme="dark"] .viewer-dialog::backdrop,
:root[data-theme="dark"] .viewer-surface,
:root[data-theme="dark"] .viewer-pages {
  background: #0f0f0d;
}

:root[data-theme="dark"] .viewer-topbar {
  border-bottom-color: rgba(255, 255, 255, 0.08);
  background: rgba(18, 18, 16, 0.82);
  -webkit-backdrop-filter: blur(18px) saturate(1.04);
  backdrop-filter: blur(18px) saturate(1.04);
}

:root[data-theme="dark"] .viewer-page-indicator,
:root[data-theme="dark"] .viewer-key-signature,
:root[data-theme="dark"] .viewer-favorite-button {
  border-color: var(--line);
  background: rgba(27, 28, 31, 0.86);
  color: var(--ink);
}

:root[data-theme="dark"] .viewer-key-signature {
  color: var(--accent-strong);
}

:root[data-theme="dark"] .viewer-back-button {
  color: var(--accent-strong);
}

:root[data-theme="dark"] .viewer-performance-button {
  background: #5f94e3;
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.22);
}

:root[data-theme="dark"] .viewer-image-frame {
  background: var(--paper);
}

:root[data-theme="dark"] .viewer-image-frame img {
  filter: none;
}

/* v100 fixes: folder back row, safe area color, profile/preferences dark consistency */
body {
  background-color: var(--app-bg);
}

#libraryScreen.is-folder-open .library-head {
  display: flex;
  min-height: 44px;
  margin: 0 0 10px;
  padding: 0 2px;
}

#libraryScreen.is-folder-open .library-head > div:first-child {
  width: 100%;
}

#libraryScreen.is-folder-open .library-title-row {
  min-height: 44px;
  gap: 10px;
}

#libraryScreen.is-folder-open .folder-back-button {
  margin-left: 0;
  border: 1px solid rgba(37, 99, 235, 0.12);
  background: var(--accent-soft);
  color: var(--accent-strong);
}

#libraryScreen.is-folder-open #libraryTitle {
  overflow: hidden;
  font-size: 1.06rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#libraryScreen.is-folder-open #resultCount {
  display: none;
}

:root[data-theme="dark"] #libraryScreen.is-folder-open .folder-back-button {
  border-color: rgba(255, 255, 255, 0.08);
  background: rgba(110, 168, 255, 0.13);
  color: var(--accent-strong);
}

:root[data-theme="dark"] .profile-screen,
:root[data-theme="dark"] .preferences-screen {
  background-color: var(--app-bg);
  background-image:
    radial-gradient(circle at 18% -8%, rgba(125, 211, 199, 0.05), transparent 32%),
    linear-gradient(180deg, #151513 0%, #11110f 62%, #141412 100%);
}

:root[data-theme="dark"] .profile-page,
:root[data-theme="dark"] .preferences-page {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(34, 35, 39, 0.96), rgba(27, 28, 31, 0.98));
  color: var(--ink);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.2);
}

:root[data-theme="dark"] .profile-field,
:root[data-theme="dark"] .preference-section {
  color: var(--ink);
}

:root[data-theme="dark"] .profile-page-head,
:root[data-theme="dark"] .profile-state {
  color: var(--ink);
}

:root[data-theme="dark"] .profile-segmented,
:root[data-theme="dark"] .preference-choice-button,
:root[data-theme="dark"] .profile-contact-row,
:root[data-theme="dark"] .profile-birthday-button,
:root[data-theme="dark"] .field input,
:root[data-theme="dark"] .field select,
:root[data-theme="dark"] .field textarea {
  border-color: var(--line);
  background: rgba(20, 21, 23, 0.92);
  color: var(--ink);
}

:root[data-theme="dark"] .profile-segment-button {
  background: transparent;
  color: var(--muted);
}

:root[data-theme="dark"] .profile-segment-button:hover,
:root[data-theme="dark"] .profile-segment-button:focus-visible {
  color: var(--accent-strong);
}

:root[data-theme="dark"] .profile-segment-button.is-active {
  background: rgba(110, 168, 255, 0.18);
  color: var(--accent-strong);
  box-shadow: none;
}

:root[data-theme="dark"] .preference-section h3 {
  color: var(--ink);
}

:root[data-theme="dark"] .preference-choice-button {
  box-shadow: none;
}

:root[data-theme="dark"] .preference-choice-button.is-active {
  border-color: rgba(110, 168, 255, 0.28);
  background: rgba(110, 168, 255, 0.13);
  color: var(--accent-strong);
  box-shadow: none;
}

:root[data-theme="dark"] .preference-choice-icon,
:root[data-theme="dark"] .mine-strip-icon {
  background: rgba(110, 168, 255, 0.13);
  color: var(--accent-strong);
}

:root[data-theme="dark"] .profile-link-button {
  background: rgba(255, 255, 255, 0.045);
  color: var(--accent-strong);
}

/* v101 score cover preview: subtle loose-leaf binder style */
.score-card:not(.folder-card) .score-preview {
  padding: 0;
  border-color: rgba(202, 208, 218, 0.82);
  background: var(--paper);
  box-shadow:
    -7px 8px 18px rgba(31, 41, 51, 0.08),
    inset 15px 0 18px rgba(37, 99, 235, 0.07);
}

.score-card:not(.folder-card) .score-preview::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  z-index: 2;
  width: 14px;
  border-radius: inherit;
  background:
    linear-gradient(90deg, rgba(37, 99, 235, 0.11), rgba(20, 184, 166, 0.055) 62%, transparent),
    linear-gradient(180deg, rgba(255, 255, 255, 0.18), rgba(31, 41, 51, 0.035));
  box-shadow:
    inset -1px 0 0 rgba(31, 41, 51, 0.08),
    inset 5px 0 8px rgba(31, 41, 51, 0.045);
  pointer-events: none;
}

.score-card:not(.folder-card) .score-preview::after {
  content: "";
  position: absolute;
  top: 12%;
  bottom: 12%;
  left: 2px;
  z-index: 3;
  width: 12px;
  border-radius: 999px;
  background:
    radial-gradient(ellipse at center, transparent 0 2.4px, rgba(134, 146, 163, 0.86) 2.8px 4.4px, rgba(255, 255, 255, 0.34) 4.7px 5.2px, transparent 5.5px) center 0 / 12px 16px no-repeat,
    radial-gradient(ellipse at center, transparent 0 2.4px, rgba(134, 146, 163, 0.86) 2.8px 4.4px, rgba(255, 255, 255, 0.34) 4.7px 5.2px, transparent 5.5px) center 33.33% / 12px 16px no-repeat,
    radial-gradient(ellipse at center, transparent 0 2.4px, rgba(134, 146, 163, 0.86) 2.8px 4.4px, rgba(255, 255, 255, 0.34) 4.7px 5.2px, transparent 5.5px) center 66.66% / 12px 16px no-repeat,
    radial-gradient(ellipse at center, transparent 0 2.4px, rgba(134, 146, 163, 0.86) 2.8px 4.4px, rgba(255, 255, 255, 0.34) 4.7px 5.2px, transparent 5.5px) center 100% / 12px 16px no-repeat;
  filter: drop-shadow(-1px 1px 1px rgba(31, 41, 51, 0.16));
  opacity: 0.74;
  pointer-events: none;
}

.score-card:not(.folder-card) .score-preview img {
  z-index: 1;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  object-fit: cover;
  box-shadow: none;
}

:root[data-theme="dark"] .score-card:not(.folder-card) .score-preview {
  border-color: rgba(219, 211, 195, 0.42);
  background: var(--paper);
  box-shadow:
    -7px 8px 18px rgba(0, 0, 0, 0.22),
    inset 15px 0 18px rgba(80, 90, 105, 0.12);
}

:root[data-theme="dark"] .score-card:not(.folder-card) .score-preview::before {
  background:
    linear-gradient(90deg, rgba(110, 168, 255, 0.16), rgba(125, 211, 199, 0.07) 62%, transparent),
    linear-gradient(180deg, rgba(255, 255, 255, 0.14), rgba(70, 55, 40, 0.05));
  box-shadow:
    inset -1px 0 0 rgba(80, 70, 58, 0.12),
    inset 5px 0 8px rgba(80, 70, 58, 0.05);
}

:root[data-theme="dark"] .score-card:not(.folder-card) .score-preview::after {
  background:
    radial-gradient(ellipse at center, transparent 0 2.4px, rgba(121, 129, 139, 0.9) 2.8px 4.4px, rgba(253, 249, 240, 0.3) 4.7px 5.2px, transparent 5.5px) center 0 / 12px 16px no-repeat,
    radial-gradient(ellipse at center, transparent 0 2.4px, rgba(121, 129, 139, 0.9) 2.8px 4.4px, rgba(253, 249, 240, 0.3) 4.7px 5.2px, transparent 5.5px) center 33.33% / 12px 16px no-repeat,
    radial-gradient(ellipse at center, transparent 0 2.4px, rgba(121, 129, 139, 0.9) 2.8px 4.4px, rgba(253, 249, 240, 0.3) 4.7px 5.2px, transparent 5.5px) center 66.66% / 12px 16px no-repeat,
    radial-gradient(ellipse at center, transparent 0 2.4px, rgba(121, 129, 139, 0.9) 2.8px 4.4px, rgba(253, 249, 240, 0.3) 4.7px 5.2px, transparent 5.5px) center 100% / 12px 16px no-repeat;
  filter: drop-shadow(-1px 1px 1px rgba(0, 0, 0, 0.28));
}

/* v103: startup stability, blue add button asset, batch delete, and top coil score covers */
body.app-booting .app-shell {
  opacity: 0;
}

body.app-ready .app-shell {
  opacity: 1;
  transition: opacity 0.12s ease;
}

@media (prefers-reduced-motion: reduce) {
  body.app-ready .app-shell {
    transition: none;
  }
}

.library-head {
  gap: 12px;
}

.library-bulk-delete-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  gap: 6px;
  padding: 0 12px;
  border: 1px solid rgba(220, 38, 38, 0.12);
  border-radius: 999px;
  background: rgba(220, 38, 38, 0.06);
  color: var(--danger);
  font-size: 0.82rem;
  font-weight: 850;
  white-space: nowrap;
}

.library-bulk-delete-button .lucide,
.library-bulk-delete-button [data-lucide] {
  width: 16px;
  height: 16px;
  stroke-width: 2.2;
}

.library-bulk-delete-button:hover,
.library-bulk-delete-button:focus-visible {
  border-color: rgba(220, 38, 38, 0.24);
  background: rgba(220, 38, 38, 0.1);
  outline: none;
}

.library-bulk-delete-button:disabled {
  opacity: 0.5;
}

.bulk-delete-dialog {
  width: min(94vw, 520px);
  max-width: min(94vw, 520px);
}

.bulk-delete-surface {
  width: 100%;
  max-width: min(94vw, 520px);
  margin: 0 auto;
}

.bulk-delete-select-all {
  display: flex;
  align-items: center;
  min-height: 44px;
  gap: 10px;
  margin: 12px 0;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-strong);
  color: var(--ink);
  font-weight: 800;
}

.bulk-delete-select-all input,
.bulk-delete-row input {
  flex: none;
  width: 20px;
  height: 20px;
  margin: 0;
  justify-self: center;
  accent-color: var(--danger);
}

.bulk-delete-list {
  display: grid;
  max-height: min(44vh, 360px);
  gap: 8px;
  margin: 10px 0 16px;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}

.bulk-delete-row {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  align-items: center;
  min-height: 54px;
  gap: 10px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
}

.bulk-delete-row-text {
  display: grid;
  min-width: 0;
  gap: 3px;
}

.bulk-delete-row-text strong,
.bulk-delete-row-text small {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.bulk-delete-row-text strong {
  color: var(--ink);
  font-size: 0.95rem;
}

.bulk-delete-row-text small {
  color: var(--muted);
  font-size: 0.78rem;
}

.auth-state.is-error {
  color: var(--danger);
}

.fab-button {
  width: min(154px, calc(100vw - 56px));
  aspect-ratio: 612 / 201;
  height: auto;
  border-radius: 999px;
  background: transparent;
  box-shadow: none;
  filter: drop-shadow(0 10px 18px rgba(37, 99, 235, 0.2));
}

.fab-button::before,
.fab-button::after {
  display: none;
}

.fab-button.is-dragging {
  filter: drop-shadow(0 12px 20px rgba(37, 99, 235, 0.28));
}

.fab-art {
  opacity: 1;
  object-fit: contain;
}

.fab-fallback {
  display: none;
}

.score-card:not(.folder-card) .score-preview {
  margin-top: 13px;
  overflow: visible;
  isolation: isolate;
  border-color: rgba(196, 201, 210, 0.82);
  border-radius: 10px 10px 14px 14px;
  background: var(--paper);
  box-shadow: 0 9px 18px rgba(31, 41, 51, 0.07);
}

.score-card:not(.folder-card) .score-preview::before {
  content: "";
  position: absolute;
  top: -20px;
  right: -8px;
  left: -8px;
  z-index: 4;
  width: auto;
  height: 39px;
  border-radius: 0;
  background-color: transparent;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='48' height='39' viewBox='0 0 48 39' fill='none'%3E%3Cpath d='M0 22H48' stroke='%23111111' stroke-width='3.7' stroke-linecap='round'/%3E%3Cpath d='M16 36C4 36 4 4 16 4C28 4 28 36 16 36' stroke='%23111111' stroke-width='5.2' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: repeat-x;
  background-position: left top;
  background-size: 48px 39px;
  box-shadow: none;
  filter: drop-shadow(0 2px 1px rgba(31, 41, 51, 0.16));
  opacity: 0.92;
  pointer-events: none;
}

.score-card:not(.folder-card) .score-preview::after {
  content: "";
  position: absolute;
  top: -1px;
  right: 0;
  left: 0;
  z-index: 3;
  width: auto;
  height: 12px;
  border-radius: 10px 10px 0 0;
  background: linear-gradient(180deg, rgba(17, 17, 17, 0.16), rgba(17, 17, 17, 0.04), transparent);
  filter: none;
  opacity: 1;
  pointer-events: none;
}

.score-card:not(.folder-card) .score-preview img {
  z-index: 1;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  object-fit: cover;
  box-shadow: none;
}

:root[data-theme="dark"] .library-bulk-delete-button {
  border-color: rgba(255, 138, 138, 0.18);
  background: rgba(255, 138, 138, 0.08);
  color: var(--danger);
}

:root[data-theme="dark"] .bulk-delete-select-all,
:root[data-theme="dark"] .bulk-delete-row {
  border-color: var(--line);
  background: var(--surface-strong);
}

:root[data-theme="dark"] .score-card:not(.folder-card) .score-preview {
  border-color: rgba(219, 211, 195, 0.42);
  background: var(--paper);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.22);
}

:root[data-theme="dark"] .score-card:not(.folder-card) .score-preview::before {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='48' height='39' viewBox='0 0 48 39' fill='none'%3E%3Cpath d='M0 22H48' stroke='%23111111' stroke-width='3.7' stroke-linecap='round'/%3E%3Cpath d='M16 36C4 36 4 4 16 4C28 4 28 36 16 36' stroke='%23111111' stroke-width='5.2' stroke-linecap='round'/%3E%3C/svg%3E");
  filter: drop-shadow(0 2px 1px rgba(0, 0, 0, 0.26));
}

/* v104: keep the add button visible and show score thumbnails without notebook decoration */
.fab-button {
  width: min(154px, calc(100vw - 56px));
  height: 51px;
  min-height: 51px;
  aspect-ratio: auto;
}

.fab-art {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
  opacity: 1;
  object-fit: contain;
}

.score-card:not(.folder-card) .score-preview {
  margin-top: 0;
  overflow: hidden;
  isolation: auto;
  border: 0;
  background: transparent;
  box-shadow: none;
}

.score-card:not(.folder-card) .score-preview::before,
.score-card:not(.folder-card) .score-preview::after,
:root[data-theme="dark"] .score-card:not(.folder-card) .score-preview::before,
:root[data-theme="dark"] .score-card:not(.folder-card) .score-preview::after {
  display: none;
}

:root[data-theme="dark"] .score-card:not(.folder-card) .score-preview {
  border: 0;
  background: transparent;
  box-shadow: none;
}

/* v105: hard override older FAB hiding rules */
.fab-button {
  width: min(154px, calc(100vw - 56px));
  height: 51px;
  min-height: 51px;
  aspect-ratio: auto;
  overflow: visible;
  background: transparent url("assets/add-score-button.png?v=51") center / contain no-repeat !important;
  box-shadow: none;
  filter: drop-shadow(0 10px 18px rgba(37, 99, 235, 0.2));
  opacity: 1;
  visibility: visible;
}

.fab-button::before,
.fab-button::after {
  content: none !important;
  display: none !important;
}

.fab-art {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: block !important;
  width: 100%;
  height: 100%;
  opacity: 1 !important;
  object-fit: contain;
  visibility: visible !important;
}

.fab-fallback {
  display: none !important;
}

/* v106: use the real app icon in the top bar */
.brand-mark {
  overflow: hidden;
  border-radius: 13px;
  background: transparent !important;
  box-shadow: 0 10px 24px rgba(31, 41, 51, 0.14);
}

.brand-mark::before {
  content: none !important;
  display: none !important;
}

.brand-mark img {
  display: block !important;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  opacity: 1 !important;
  object-fit: cover;
  visibility: visible !important;
}

:root[data-theme="dark"] .brand-mark {
  background: transparent !important;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.24);
}

/* v108: viewer topbar midpoint layout */
.viewer-topbar {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  align-items: center;
  column-gap: 4px;
}

.viewer-back-button,
.viewer-performance-button,
.viewer-page-indicator,
.viewer-key-signature,
.viewer-more {
  position: static;
  align-self: center;
  justify-self: center;
  transform: none;
  margin-left: 0;
}

.viewer-back-button {
  grid-column: 1;
}

.viewer-performance-button {
  grid-column: 2;
}

.viewer-page-indicator {
  grid-column: 3;
}

.viewer-key-signature {
  grid-column: 4;
  margin-left: 0;
  max-width: 100%;
  border-color: transparent;
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.18);
}

.viewer-more {
  grid-column: 5;
}

.viewer-more-button {
  width: 100%;
}

:root[data-theme="dark"] .viewer-key-signature {
  border-color: transparent;
  background: #5f94e3;
  color: #ffffff;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.24);
}

/* v110: keep batch delete reachable from the visible top bar */
.topbar-bulk-delete-button {
  border-color: rgba(220, 38, 38, 0.14);
  background: rgba(220, 38, 38, 0.08);
  color: var(--danger);
}

.topbar-bulk-delete-button:hover,
.topbar-bulk-delete-button:focus-visible {
  border-color: rgba(220, 38, 38, 0.24);
  background: var(--danger);
  color: #ffffff;
}

:root[data-theme="dark"] .topbar-bulk-delete-button {
  border-color: rgba(255, 138, 138, 0.18);
  background: rgba(255, 138, 138, 0.1);
  color: var(--danger);
}

/* v115: restore plain score cover thumbnails */
.score-card:not(.folder-card) .score-preview {
  position: relative;
  display: grid;
  place-items: center;
  width: 100%;
  max-width: none;
  aspect-ratio: 0.72;
  overflow: hidden;
  isolation: auto;
  border: 1px solid rgba(209, 213, 219, 0.86);
  border-radius: 14px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(255, 251, 242, 0.96)),
    repeating-linear-gradient(
      180deg,
      transparent 0,
      transparent 12px,
      rgba(31, 41, 51, 0.075) 13px,
      transparent 14px
    );
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.65),
    0 8px 18px rgba(31, 41, 51, 0.07);
}

.score-card:not(.folder-card) .score-preview::before,
.score-card:not(.folder-card) .score-preview::after,
:root[data-theme="dark"] .score-card:not(.folder-card) .score-preview::before,
:root[data-theme="dark"] .score-card:not(.folder-card) .score-preview::after {
  content: none !important;
  display: none !important;
}

.score-card:not(.folder-card) .score-preview img {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  background: #fffdf8;
  object-fit: contain;
  box-shadow: none;
  filter: none;
}

.score-card:not(.folder-card) .score-preview-placeholder {
  display: inline-grid;
  place-items: center;
  width: 100%;
  height: 100%;
  color: rgba(80, 72, 61, 0.42);
}

.score-card:not(.folder-card) .score-preview-placeholder .lucide,
.score-card:not(.folder-card) .score-preview-placeholder [data-lucide] {
  width: 30px;
  height: 30px;
  stroke-width: 1.8;
}

.score-card:not(.folder-card) .score-favorite-mark {
  z-index: 4;
}

:root[data-theme="dark"] .score-card:not(.folder-card) .score-preview {
  border-color: rgba(214, 207, 194, 0.28);
  background:
    linear-gradient(180deg, rgba(243, 238, 227, 0.94), rgba(232, 222, 205, 0.96)),
    repeating-linear-gradient(
      180deg,
      transparent 0,
      transparent 12px,
      rgba(80, 70, 58, 0.08) 13px,
      transparent 14px
    );
  box-shadow:
    inset 0 0 0 1px rgba(80, 70, 58, 0.08),
    0 8px 18px rgba(0, 0, 0, 0.18);
}

/* v120: make the top safe area part of the top bar, matching bottom-nav safe-area behavior */
html,
body {
  background-color: var(--safe-area-bg);
}

body {
  /* safe-area 由 .topbar / .bottom-nav 各自处理，body 不再设置 safe-area 内边距。 */
  padding: 0;
}

body::before {
  display: none !important;
}

.topbar {
  top: 0;
  gap: 8px;
  min-height: calc(76px + env(safe-area-inset-top));
  padding: calc(12px + env(safe-area-inset-top)) 14px 12px;
  background: #fffdf8;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

.brand-lockup {
  flex: 1 1 auto;
  min-width: 0;
}

.brand-lockup > div {
  min-width: 0;
}

.brand-lockup h1,
.brand-lockup p {
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.topbar-actions {
  flex: 0 0 auto;
  gap: 5px;
}

.topbar-action-button {
  width: 40px;
  min-width: 40px;
  height: 40px;
  min-height: 40px;
  border-radius: 13px;
  padding: 0;
}

.topbar-action-button .lucide,
.topbar-action-button [data-lucide] {
  width: 19px;
  height: 19px;
  stroke-width: 2.15;
}

.setlist-create-button {
  width: auto;
  max-width: calc(100vw - 32px);
  min-height: 38px;
  padding-inline: 14px;
  font-size: 0.86rem;
}

.setlist-create-button .lucide,
.setlist-create-button [data-lucide] {
  width: 17px;
  height: 17px;
}

.mine-strip-button {
  min-height: 56px;
  padding-inline: 12px;
}

.mine-strip-icon {
  width: 34px;
  height: 34px;
}

.mine-strip-icon .lucide,
.mine-strip-icon [data-lucide] {
  width: 18px;
  height: 18px;
}

.usage-page {
  min-height: auto;
  gap: 16px;
  padding-bottom: 18px;
}

.usage-screen {
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-y;
}

.usage-hero,
.usage-guide-card {
  border: 1px solid rgba(229, 231, 235, 0.92);
  border-radius: var(--radius-xl);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow-soft);
}

.usage-hero {
  display: grid;
  grid-template-columns: 116px minmax(0, 1fr);
  align-items: center;
  gap: 16px;
  padding: 16px;
}

.usage-hero h3,
.usage-guide-card h3 {
  margin: 0;
  color: var(--ink);
  letter-spacing: 0;
}

.usage-hero h3 {
  font-size: 1.05rem;
}

.usage-hero p,
.usage-guide-card p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.65;
}

.usage-phone-preview {
  position: relative;
  display: grid;
  align-content: start;
  gap: 8px;
  width: 104px;
  height: 148px;
  padding: 12px 10px;
  border: 1px solid rgba(37, 99, 235, 0.16);
  border-radius: 22px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(247, 245, 239, 0.98)),
    repeating-linear-gradient(180deg, transparent 0, transparent 17px, rgba(37, 99, 235, 0.045) 18px, transparent 19px);
  box-shadow: 0 12px 26px rgba(31, 41, 51, 0.12);
}

.usage-mini-topbar {
  width: 52px;
  height: 8px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.26);
}

.usage-mini-search {
  width: 100%;
  height: 18px;
  border-radius: 999px;
  background: #ffffff;
  box-shadow: inset 0 0 0 1px rgba(37, 99, 235, 0.12);
}

.usage-mini-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 5px;
}

.usage-mini-grid i {
  height: 34px;
  border-radius: 8px;
  background: linear-gradient(180deg, #ffffff, #f2eadc);
  box-shadow: inset 0 0 0 1px rgba(170, 150, 120, 0.22);
}

.usage-mini-fab {
  position: absolute;
  right: 11px;
  bottom: 12px;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: var(--accent);
  color: #ffffff;
  font-size: 1.2rem;
  font-weight: 900;
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.24);
}

.usage-guide-list {
  display: grid;
  gap: 12px;
  padding-bottom: 18px;
}

.usage-guide-card {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 12px;
  padding: 14px;
}

.usage-guide-icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.usage-guide-icon .lucide,
.usage-guide-icon [data-lucide] {
  width: 21px;
  height: 21px;
}

.usage-button-demo,
.usage-filter-demo,
.usage-card-demo,
.usage-viewer-demo,
.usage-annotation-demo,
.usage-share-demo {
  margin-top: 10px;
}

.usage-button-demo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 0 14px 0 10px;
  border-radius: 999px;
  background: var(--accent);
  color: #ffffff;
  font-size: 0.84rem;
  font-weight: 900;
}

.usage-button-demo span {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.22);
}

.usage-filter-demo,
.usage-annotation-demo,
.usage-share-demo {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.usage-filter-demo span,
.usage-annotation-demo span,
.usage-annotation-demo b,
.usage-share-demo span {
  display: inline-grid;
  place-items: center;
  min-height: 30px;
  padding: 0 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 850;
}

.usage-annotation-demo b {
  background: var(--accent);
  color: #ffffff;
}

.usage-note {
  margin-top: 8px;
  color: var(--accent-strong);
  font-size: 0.84rem;
  font-weight: 760;
}

.usage-card-demo {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  grid-template-rows: auto auto;
  align-items: center;
  gap: 2px 10px;
  width: min(210px, 100%);
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-strong);
}

.usage-card-demo span {
  grid-row: 1 / 3;
  width: 38px;
  height: 32px;
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(20, 184, 166, 0.2), rgba(37, 99, 235, 0.1));
}

.usage-card-demo b,
.usage-card-demo em {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.usage-card-demo b {
  color: var(--ink);
  font-size: 0.86rem;
}

.usage-card-demo em {
  color: var(--muted);
  font-size: 0.76rem;
  font-style: normal;
}

.usage-viewer-demo {
  display: grid;
  grid-template-columns: auto minmax(54px, 1fr) auto;
  align-items: center;
  gap: 8px;
  width: min(230px, 100%);
  min-height: 36px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(31, 41, 51, 0.08);
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 850;
}

.usage-viewer-demo b {
  text-align: center;
}

.usage-viewer-demo i {
  color: var(--warn);
  font-style: normal;
}

@media (max-width: 430px) {
  .topbar {
    padding-inline: 10px;
    min-height: calc(76px + env(safe-area-inset-top));
    padding-top: calc(12px + env(safe-area-inset-top));
    padding-bottom: 12px;
  }

  .brand-lockup {
    gap: 9px;
  }

  .brand-mark {
    width: 40px;
    height: 40px;
    border-radius: 12px;
  }

  .brand-lockup h1 {
    font-size: 1.14rem;
  }

  .brand-lockup p {
    font-size: 0.76rem;
  }

  .topbar-actions {
    gap: 4px;
  }

  .topbar-action-button {
    width: 38px;
    min-width: 38px;
    height: 38px;
    min-height: 38px;
    border-radius: 10px;
  }

  .topbar-action-button .lucide,
  .topbar-action-button [data-lucide] {
    width: 18px;
    height: 18px;
  }

  .usage-hero {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 12px;
    padding: 14px;
  }

  .usage-phone-preview {
    width: 90px;
    height: 128px;
    border-radius: 20px;
  }
}

@media (max-width: 360px) {
  .viewer-topbar {
    column-gap: 2px;
    padding-right: 6px;
    padding-left: 6px;
  }

  .viewer-back-button {
    min-height: 36px;
    gap: 0;
    padding-right: 4px;
    padding-left: 2px;
    font-size: 0.82rem;
  }

  .viewer-back-button .lucide,
  .viewer-back-button [data-lucide] {
    width: 18px;
    height: 18px;
  }

  .brand-lockup h1 {
    font-size: 1.04rem;
  }

  .brand-lockup p {
    font-size: 0.72rem;
  }

  .topbar-action-button {
    width: 36px;
    min-width: 36px;
    height: 36px;
    min-height: 36px;
  }
}

.bulk-delete-dialog {
  overflow-x: hidden;
  overflow-y: auto;
  touch-action: pan-y;
}

.bulk-delete-surface {
  max-width: calc(100vw - 24px);
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  touch-action: pan-y;
}

.bulk-delete-list {
  overflow-x: hidden;
  overflow-y: auto;
  touch-action: pan-y;
}

:root[data-theme="dark"] .usage-hero,
:root[data-theme="dark"] .usage-guide-card {
  border-color: var(--line);
  background: linear-gradient(180deg, rgba(34, 35, 39, 0.96), rgba(27, 28, 31, 0.98));
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.2);
}

:root[data-theme="dark"] .usage-phone-preview {
  border-color: rgba(110, 168, 255, 0.16);
  background:
    linear-gradient(180deg, rgba(34, 35, 39, 0.92), rgba(27, 28, 31, 0.98)),
    repeating-linear-gradient(180deg, transparent 0, transparent 17px, rgba(242, 239, 232, 0.026) 18px, transparent 19px);
  box-shadow: 0 12px 26px rgba(0, 0, 0, 0.24);
}

:root[data-theme="dark"] .usage-mini-search,
:root[data-theme="dark"] .usage-card-demo {
  border-color: var(--line);
  background: rgba(20, 21, 23, 0.92);
}

:root[data-theme="dark"] .usage-mini-grid i {
  background: linear-gradient(180deg, #f3eee3, #e8decd);
}

:root[data-theme="dark"] .usage-viewer-demo {
  background: rgba(255, 255, 255, 0.06);
}

/* v121: refined setlist layout for phones and tablets */
.setlist-panel {
  width: min(1040px, 100%);
}

.setlist-head {
  min-width: 0;
}

.setlist-card-actions .more-button,
.setlist-card-actions .danger-button {
  width: 82px;
  min-width: 82px;
  min-height: 40px;
  border-radius: 12px;
  font-size: 0.82rem;
  font-weight: 850;
}

.setlist-card-actions .more-button .lucide,
.setlist-card-actions .more-button [data-lucide],
.setlist-card-actions .danger-button .lucide,
.setlist-card-actions .danger-button [data-lucide] {
  width: 16px;
  height: 16px;
}

@media (min-width: 700px) and (max-width: 1180px) {
  .setlist-screen {
    padding-inline: 22px;
  }

  .setlist-panel {
    display: flex;
    flex-direction: column;
    width: min(980px, 100%);
    gap: 18px;
  }

  .setlist-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 82px;
    min-height: 82px;
    max-height: 82px;
    padding: 18px 20px;
    border: 1px solid rgba(229, 231, 235, 0.88);
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.86);
    box-shadow: 0 14px 34px rgba(31, 41, 51, 0.07);
  }

  .setlist-head h2 {
    font-size: 1.38rem;
  }

  .setlist-head p {
    font-size: 0.94rem;
  }

  .setlist-create-button {
    position: static;
    inset: auto;
    width: auto;
    max-width: max-content;
    justify-self: end;
    min-height: 36px;
    padding: 0 13px;
    gap: 6px;
    border-radius: 999px;
    font-size: 0.82rem;
    box-shadow: 0 10px 22px rgba(37, 99, 235, 0.16);
  }

  .setlist-create-button .lucide,
  .setlist-create-button [data-lucide] {
    width: 16px;
    height: 16px;
  }

  .setlist-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    padding-bottom: 102px;
  }

  .setlist-card {
    grid-template-columns: 52px minmax(0, 1fr);
    grid-template-rows: minmax(58px, auto) auto;
    align-items: start;
    height: 156px;
    min-height: 156px;
    overflow: hidden;
    gap: 12px 14px;
    padding: 16px;
    border-radius: 22px;
    border-color: rgba(229, 231, 235, 0.88);
    background:
      linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(255, 253, 248, 0.98));
    box-shadow: 0 14px 34px rgba(31, 41, 51, 0.075);
  }

  .setlist-card-icon {
    width: 52px;
    height: 52px;
    border-radius: 17px;
  }

  .setlist-card-icon .lucide,
  .setlist-card-icon [data-lucide] {
    width: 24px;
    height: 24px;
  }

  .setlist-card-body h3 {
    display: -webkit-box;
    min-height: 2.55em;
    overflow: hidden;
    font-size: 1.06rem;
    line-height: 1.28;
    white-space: normal;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
  }

  .setlist-card-body p {
    margin-top: 7px;
    font-size: 0.86rem;
    line-height: 1.4;
    white-space: nowrap;
  }

  .setlist-card-actions {
    grid-column: 1 / -1;
    align-self: end;
    justify-content: flex-end;
    gap: 8px;
    padding-top: 4px;
  }

  .setlist-card-actions .more-button,
  .setlist-card-actions .danger-button {
    width: 86px;
    min-width: 86px;
    min-height: 38px;
  }
}

@media (min-width: 1181px) {
  .setlist-panel {
    width: min(1040px, 100%);
  }

  .setlist-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (max-width: 560px) {
  .setlist-card-actions {
    gap: 8px;
  }

  .setlist-card-actions .more-button,
  .setlist-card-actions .danger-button {
    width: 82px;
    min-width: 82px;
    min-height: 40px;
  }
}

:root[data-theme="dark"] .setlist-card {
  border-color: var(--line);
  background: linear-gradient(180deg, rgba(34, 35, 39, 0.92), rgba(27, 28, 31, 0.98));
  box-shadow: 0 16px 34px rgba(0, 0, 0, 0.2);
}

:root[data-theme="dark"] .move-setlist-option {
  border-color: var(--line);
  background: var(--surface-strong);
  color: var(--ink);
}

:root[data-theme="dark"] .move-setlist-option:hover,
:root[data-theme="dark"] .move-setlist-option:focus-visible {
  border-color: rgba(110, 168, 255, 0.34);
  background: var(--accent-soft);
  color: var(--accent-strong);
}

:root[data-theme="dark"] .move-setlist-option:disabled {
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
}

:root[data-theme="dark"] .move-setlist-create {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.04);
}

:root[data-theme="dark"] .readonly-setlist-badge {
  border-color: rgba(110, 168, 255, 0.24);
  background: var(--accent-soft);
  color: var(--accent-strong);
}

@media (min-width: 700px) {
  :root[data-theme="dark"] .setlist-head {
    border-color: var(--line);
    background: rgba(27, 28, 31, 0.86);
    box-shadow: 0 16px 34px rgba(0, 0, 0, 0.18);
  }
}

/* ===== 回收站 ===== */
.recycle-empty-button {
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--danger);
  font-weight: 700;
  font-size: 0.85rem;
}

.recycle-empty-button:disabled {
  color: var(--muted);
  opacity: 0.6;
}

.recycle-bin-list {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.recycle-bin-empty {
  margin: 24px 0;
  color: var(--muted);
  text-align: center;
}

.recycle-bin-row {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
}

.recycle-bin-thumb {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  overflow: hidden;
  border-radius: 10px;
  background: var(--surface-strong, rgba(0, 0, 0, 0.05));
  color: var(--muted);
}

.recycle-bin-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.recycle-bin-body {
  min-width: 0;
}

.recycle-bin-body h3 {
  margin: 0;
  overflow: hidden;
  color: var(--ink);
  font-size: 0.98rem;
  font-weight: 800;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.recycle-bin-body p {
  margin: 3px 0 8px;
  overflow: hidden;
  color: var(--muted);
  font-size: 0.78rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.recycle-bin-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  grid-column: 1 / -1;
}

.recycle-restore-button,
.recycle-delete-button {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  font-weight: 700;
  font-size: 0.85rem;
}

.recycle-restore-button {
  color: var(--accent-strong, var(--accent));
  border-color: var(--accent, var(--line));
}

.recycle-delete-button {
  color: var(--danger);
}

.recycle-restore-button .lucide,
.recycle-restore-button [data-lucide],
.recycle-delete-button .lucide,
.recycle-delete-button [data-lucide] {
  width: 16px;
  height: 16px;
}

/* ===== 备份与导入 ===== */
.backup-card {
  margin-top: 14px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
}

.backup-card h3 {
  margin: 0 0 6px;
  color: var(--ink);
  font-size: 1rem;
  font-weight: 800;
}

.backup-card p {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.5;
}

.backup-action-button {
  width: 100%;
}

.backup-status {
  margin-top: 16px;
  padding: 10px 14px;
  border-radius: 12px;
  background: var(--accent-soft, rgba(0, 0, 0, 0.04));
  color: var(--ink);
  font-size: 0.85rem;
  text-align: center;
}

.backup-status.is-error {
  color: var(--danger);
}

.import-progress {
  display: grid;
  gap: 8px;
  margin-top: 14px;
  padding: 12px 13px;
  border: 1px solid rgba(37, 99, 235, 0.16);
  border-radius: 14px;
  background: var(--accent-soft);
  color: var(--ink);
}

.import-share-progress {
  margin-top: 0;
}

.import-progress-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.86rem;
  font-weight: 800;
}

.import-progress-head strong {
  flex: 0 0 auto;
  color: var(--accent-strong);
  font-variant-numeric: tabular-nums;
}

.import-progress progress {
  width: 100%;
  height: 9px;
  overflow: hidden;
  border: 0;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.12);
  accent-color: var(--accent);
}

.import-progress progress::-webkit-progress-bar {
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.12);
}

.import-progress progress::-webkit-progress-value {
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 0.2s ease;
}

.import-progress progress::-moz-progress-bar {
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.import-progress p {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.45;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.import-progress.is-complete {
  border-color: rgba(20, 184, 166, 0.26);
  background: rgba(20, 184, 166, 0.1);
}

.import-progress.is-error {
  border-color: rgba(220, 38, 38, 0.24);
  background: rgba(220, 38, 38, 0.08);
}

.import-progress.is-error .import-progress-head strong,
.import-progress.is-error p {
  color: var(--danger);
}

:root[data-theme="dark"] .import-progress {
  border-color: rgba(110, 168, 255, 0.2);
  background: rgba(110, 168, 255, 0.1);
}

:root[data-theme="dark"] .import-progress.is-complete {
  border-color: rgba(125, 211, 199, 0.24);
  background: rgba(125, 211, 199, 0.1);
}

:root[data-theme="dark"] .import-progress.is-error {
  border-color: rgba(255, 138, 138, 0.24);
  background: rgba(255, 138, 138, 0.09);
}

/* ===== 同步队列状态面板 ===== */
.mine-sync-panel {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
}

.mine-sync-panel.has-failed {
  border-color: var(--danger);
}

.mine-sync-icon {
  display: grid;
  place-items: center;
  color: var(--accent-strong, var(--accent));
}

.mine-sync-panel.has-failed .mine-sync-icon {
  color: var(--danger);
}

.mine-sync-icon .lucide,
.mine-sync-icon [data-lucide] {
  width: 18px;
  height: 18px;
}

.mine-sync-state {
  flex: 1;
  min-width: 0;
  margin: 0;
  color: var(--ink);
  font-size: 0.85rem;
}

.mine-sync-retry {
  flex: none;
  padding: 6px 12px;
  border: 1px solid var(--accent, var(--line));
  border-radius: 999px;
  background: var(--surface);
  color: var(--accent-strong, var(--accent));
  font-weight: 700;
  font-size: 0.82rem;
}

.mine-sync-retry:disabled {
  color: var(--muted);
  opacity: 0.6;
}

.app-version-tag {
  margin: 0;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
  align-self: center;
}

/* ===== Annotation layer ===== */
.viewer-annotation-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-height: 34px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 800;
  white-space: nowrap;
}

.viewer-annotation-button .lucide,
.viewer-annotation-button [data-lucide] {
  width: 15px;
  height: 15px;
}

.viewer-annotation-button.is-active {
  border-color: color-mix(in srgb, var(--accent) 58%, transparent);
  background: var(--accent-soft);
  color: var(--accent-strong, var(--accent));
}

.viewer-page-shell {
  position: relative;
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
}

.viewer-page-shell.is-live-pinching {
  position: relative;
  z-index: 30;
  contain: paint;
  backface-visibility: hidden;
  transform:
    translate3d(var(--pinch-x, 0px), var(--pinch-y, 0px), 0)
    scale(var(--pinch-scale, 1));
  transform-origin: var(--pinch-origin-x, 50%) var(--pinch-origin-y, 50%);
  will-change: transform;
  -webkit-backface-visibility: hidden;
}

.viewer-pages-content.is-live-pinching {
  position: relative;
  z-index: 30;
  transform:
    translate3d(var(--pinch-x, 0px), var(--pinch-y, 0px), 0)
    scale(var(--pinch-scale, 1));
  transform-origin: var(--pinch-origin-x, 50%) var(--pinch-origin-y, 50%);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.viewer-pages.is-pinching {
  scroll-behavior: auto;
}

.viewer-pages.has-multiple-pages .viewer-page-shell {
  display: block;
  height: auto;
}

.viewer-pages.is-horizontal-mode .viewer-page-shell {
  display: grid;
  height: 100%;
}

.viewer-page-image {
  position: relative;
  z-index: 1;
}

.annotation-canvas {
  position: absolute;
  z-index: 2;
  display: block;
  pointer-events: none;
  touch-action: none;
  user-select: none;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
}

.viewer-pages.is-annotation-mode {
  touch-action: none;
  overscroll-behavior: contain;
}

.viewer-pages.is-annotation-mode .annotation-canvas {
  pointer-events: auto;
}

.viewer-dialog.annotations-hidden .annotation-canvas {
  opacity: 0;
}

.annotation-toolbar {
  position: fixed;
  right: max(10px, env(safe-area-inset-right));
  bottom: max(10px, calc(env(safe-area-inset-bottom) + 10px));
  left: max(10px, env(safe-area-inset-left));
  z-index: 120;
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: 760px;
  margin: 0 auto;
  padding: 9px 10px;
  overflow-x: auto;
  border: 1px solid color-mix(in srgb, var(--line) 80%, transparent);
  border-radius: 18px;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  box-shadow: 0 16px 34px rgba(15, 23, 42, 0.16);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  scrollbar-width: none;
}

.annotation-toolbar::-webkit-scrollbar {
  display: none;
}

.annotation-tool-button,
.annotation-size-control,
.annotation-color-control {
  flex: 0 0 auto;
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 800;
}

.annotation-tool-button {
  min-width: 58px;
  padding: 7px 12px;
}

.annotation-tool-button.is-active {
  border-color: color-mix(in srgb, var(--accent) 65%, transparent);
  background: var(--accent-soft);
  color: var(--accent-strong, var(--accent));
}

.annotation-tool-button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.annotation-tool-button.danger {
  color: var(--danger);
}

.annotation-tool-button:disabled {
  color: var(--muted);
  opacity: 0.5;
}

.annotation-size-control,
.annotation-color-control {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 10px;
}

.annotation-size-control input {
  width: 86px;
  accent-color: var(--accent);
}

.annotation-color-control input {
  width: 28px;
  height: 28px;
  padding: 0;
  overflow: hidden;
  border: 0;
  border-radius: 50%;
  background: transparent;
}

.viewer-dialog.is-performance-mode .annotation-toolbar {
  display: none;
}

:root[data-theme="dark"] .viewer-annotation-button,
:root[data-theme="dark"] .annotation-toolbar,
:root[data-theme="dark"] .annotation-tool-button,
:root[data-theme="dark"] .annotation-size-control,
:root[data-theme="dark"] .annotation-color-control {
  background: color-mix(in srgb, var(--surface) 90%, #11110f);
}

:root[data-theme="dark"] .annotation-toolbar {
  box-shadow: 0 16px 34px rgba(0, 0, 0, 0.36);
}

/* ---------- 生日祝福弹窗 ---------- */
.birthday-dialog {
  border: none;
  padding: 0;
  margin: auto;
  max-width: min(92vw, 420px);
  background: transparent;
  overflow: visible;
}

.birthday-dialog::backdrop {
  background: radial-gradient(circle at 50% 30%, rgba(255, 138, 101, 0.35), rgba(20, 10, 30, 0.66));
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
}

.birthday-surface {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 30px 26px 26px;
  border-radius: 24px;
  text-align: center;
  color: #5a2a00;
  background: radial-gradient(120% 80% at 50% -10%, #fff6e9 0%, #ffe6c7 45%, #ffd1e3 100%);
  box-shadow: 0 24px 60px rgba(214, 92, 92, 0.32), inset 0 0 0 1px rgba(255, 255, 255, 0.6);
  overflow: hidden;
  animation: birthday-pop 0.42s cubic-bezier(0.2, 1.1, 0.3, 1) both;
}

@keyframes birthday-pop {
  0% {
    transform: scale(0.8) translateY(12px);
    opacity: 0;
  }
  100% {
    transform: scale(1) translateY(0);
    opacity: 1;
  }
}

.birthday-confetti {
  display: flex;
  justify-content: space-between;
  width: 100%;
  font-size: 20px;
  pointer-events: none;
}

.birthday-confetti span {
  animation: birthday-float 2.6s ease-in-out infinite;
}

.birthday-confetti span:nth-child(2) {
  animation-delay: 0.3s;
}
.birthday-confetti span:nth-child(3) {
  animation-delay: 0.6s;
}
.birthday-confetti span:nth-child(4) {
  animation-delay: 0.9s;
}
.birthday-confetti span:nth-child(5) {
  animation-delay: 1.2s;
}
.birthday-confetti span:nth-child(6) {
  animation-delay: 1.5s;
}

@keyframes birthday-float {
  0%,
  100% {
    transform: translateY(0) rotate(-6deg);
  }
  50% {
    transform: translateY(-7px) rotate(6deg);
  }
}

.birthday-cake {
  font-size: 46px;
  line-height: 1;
  animation: birthday-bounce 1.6s ease-in-out infinite;
  filter: drop-shadow(0 6px 10px rgba(214, 92, 92, 0.3));
}

@keyframes birthday-bounce {
  0%,
  100% {
    transform: translateY(0) scale(1);
  }
  50% {
    transform: translateY(-6px) scale(1.05);
  }
}

.birthday-title {
  margin: 0;
  font-size: clamp(1.5rem, 6vw, 1.9rem);
  font-weight: 900;
  letter-spacing: 1px;
  background: linear-gradient(90deg, #ff6f61, #ff9e43, #ff5fa2);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.birthday-message {
  margin: 0;
  max-width: 30ch;
  font-size: 1rem;
  line-height: 1.7;
  font-weight: 600;
  color: #6b3b1a;
}

.birthday-close-button {
  margin-top: 6px;
  min-height: 46px;
  padding: 0 30px;
  border: none;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 800;
  color: #ffffff;
  background: linear-gradient(135deg, #ff7a59, #ff4f8b);
  box-shadow: 0 10px 22px rgba(255, 79, 139, 0.4);
  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.15s ease;
}

.birthday-close-button:active {
  transform: scale(0.95);
}

:root[data-theme="dark"] .birthday-surface {
  color: #ffe9d6;
  background: radial-gradient(120% 80% at 50% -10%, #3a2a1e 0%, #4a2733 55%, #3a2036 100%);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5), inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

:root[data-theme="dark"] .birthday-message {
  color: #ffd9c2;
}

@media (prefers-reduced-motion: reduce) {
  .birthday-surface,
  .birthday-confetti span,
  .birthday-cake {
    animation: none;
  }
}

/* ---------- 支持作者 ---------- */
/* “使用说明”order:1，“支持作者”排在其后。 */
.mine-menu #supportAuthorButton {
  order: 2;
}

/* 账号管理整体下移：与上方菜单留出明显间距，并尽量贴到面板底部。 */
.mine-auth-panel {
  margin-top: auto;
  padding-top: 18px;
}

.support-page {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.support-content {
  display: grid;
  gap: 12px;
  color: var(--ink);
  line-height: 1.85;
  font-size: 0.96rem;
}

.support-content p {
  margin: 0;
}

.support-hero {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 4px 0 2px;
  font-size: 40px;
  line-height: 1;
}

.support-hero-heart {
  animation: support-heart 1.6s ease-in-out infinite;
}

@keyframes support-heart {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.18);
  }
}

.support-lead {
  font-size: 1.06rem;
  font-weight: 800;
  text-align: center;
  color: var(--ink);
}

.support-closing {
  font-weight: 700;
  color: var(--accent-strong);
}

.support-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 6px;
  padding-top: 8px;
}

.support-decline-button,
.support-accept-button {
  flex: 1 1 0;
  min-height: 50px;
  border-radius: 14px;
  font-size: 1rem;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.support-decline-button {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
}

.support-decline-button:active {
  transform: scale(0.97);
  background: var(--accent-soft);
}

.support-accept-button {
  border: none;
  color: #ffffff;
  background: linear-gradient(135deg, #ff7a59, #ff4f8b);
  box-shadow: 0 12px 24px rgba(255, 79, 139, 0.34);
}

.support-accept-button:active {
  transform: scale(0.97);
  box-shadow: 0 6px 14px rgba(255, 79, 139, 0.34);
}

/* ---------- 收款码弹窗 ---------- */
.support-pay-dialog {
  border: none;
  padding: 0;
  margin: auto;
  max-width: min(92vw, 380px);
  background: transparent;
  overflow: visible;
}

.support-pay-dialog::backdrop {
  background: rgba(15, 18, 24, 0.55);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
}

.support-pay-surface {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 24px 22px 22px;
  border-radius: 22px;
  text-align: center;
  color: #ffffff;
  background: linear-gradient(160deg, #2ba24a 0%, #1f8f3f 100%);
  box-shadow: 0 26px 60px rgba(0, 0, 0, 0.34);
  transition: background 0.25s ease;
  animation: birthday-pop 0.36s cubic-bezier(0.2, 1.1, 0.3, 1) both;
}

.support-pay-surface[data-pay="alipay"] {
  background: linear-gradient(160deg, #2f9bff 0%, #1677ff 100%);
}

.support-pay-close,
.support-pay-save {
  position: absolute;
  top: 8px;
  width: 38px;
  height: 38px;
  color: rgba(255, 255, 255, 0.9);
}

.support-pay-close {
  right: 8px;
}

.support-pay-save {
  left: 8px;
}

.support-pay-close:hover,
.support-pay-close:focus-visible,
.support-pay-save:hover,
.support-pay-save:focus-visible {
  background: rgba(255, 255, 255, 0.18);
}

.support-pay-title {
  margin: 2px 0 0;
  font-size: 1.15rem;
  font-weight: 900;
  letter-spacing: 1px;
  color: #ffffff;
}

.support-pay-tabs {
  display: inline-flex;
  padding: 4px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.22);
}

.support-pay-tab {
  min-width: 88px;
  min-height: 38px;
  padding: 0 18px;
  border: none;
  border-radius: 999px;
  background: transparent;
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 800;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.support-pay-tab.is-active {
  background: #ffffff;
  color: #1f8f3f;
}

.support-pay-surface[data-pay="alipay"] .support-pay-tab.is-active {
  color: #1677ff;
}

.support-pay-qr {
  display: flex;
  align-items: center;
  justify-content: center;
  width: min(74vw, 260px);
  aspect-ratio: 1 / 1;
  padding: 12px;
  border-radius: 18px;
  background: #ffffff;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.06);
}

.support-pay-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 10px;
}

.support-pay-img[hidden] {
  display: none;
}

.support-pay-hint {
  /* 整块在弹窗内居中，但两行左边缘对齐（第二行与第一行起点对齐）。 */
  width: fit-content;
  max-width: 100%;
  margin: 0 auto;
  font-size: 0.86rem;
  font-weight: 600;
  line-height: 1.6;
  text-align: left;
  color: rgba(255, 255, 255, 0.92);
}

.support-pay-hint-line {
  display: block;
}

/* 正文内“加粗一点点”的强调（颜色不变）。 */
.support-content strong {
  font-weight: 600;
  color: inherit;
}

/* 支持作者页面：禁止上下橡皮筋拖动，边缘固定。 */
.support-screen {
  overscroll-behavior: none;
}

:root[data-theme="dark"] .support-decline-button {
  background: #25221b;
  border-color: #3a352b;
  color: var(--muted);
}

/* ---------- 本地存储恢复弹窗 ---------- */
.db-recovery-dialog {
  border: none;
  padding: 0;
  margin: auto;
  max-width: min(92vw, 380px);
  background: transparent;
  overflow: visible;
}

.db-recovery-dialog::backdrop {
  background: rgba(15, 18, 24, 0.58);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
}

.db-recovery-surface {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 26px 24px 22px;
  border-radius: 20px;
  text-align: center;
  color: var(--ink);
  background: var(--surface-strong);
  box-shadow: 0 24px 56px rgba(0, 0, 0, 0.32);
  animation: birthday-pop 0.34s cubic-bezier(0.2, 1.1, 0.3, 1) both;
}

.db-recovery-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  color: #ffffff;
  background: linear-gradient(135deg, #ff9e43, #ff5f6d);
  box-shadow: 0 10px 22px rgba(255, 95, 109, 0.34);
}

.db-recovery-icon .lucide,
.db-recovery-icon [data-lucide] {
  width: 26px;
  height: 26px;
}

.db-recovery-title {
  margin: 2px 0 0;
  font-size: 1.16rem;
  font-weight: 900;
  color: var(--ink);
}

.db-recovery-text {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--muted);
}

.db-recovery-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  margin-top: 6px;
}

.db-recovery-later,
.db-recovery-retry {
  flex: 1 1 0;
  min-height: 46px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.db-recovery-later {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
}

.db-recovery-later:active {
  transform: scale(0.97);
  background: var(--accent-soft);
}

.db-recovery-retry {
  border: none;
  color: #ffffff;
  background: linear-gradient(135deg, #ff7a59, #ff4f6d);
  box-shadow: 0 10px 22px rgba(255, 79, 109, 0.36);
}

.db-recovery-retry:active {
  transform: scale(0.97);
}

.db-recovery-retry:disabled {
  opacity: 0.6;
  cursor: default;
}

.db-recovery-reset {
  margin-top: 4px;
  padding: 6px 4px;
  border: none;
  background: transparent;
  color: var(--danger, #dc2626);
  font-size: 0.86rem;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}

.db-recovery-reset:disabled {
  opacity: 0.6;
  cursor: default;
}

:root[data-theme="dark"] .db-recovery-later {
  background: #25221b;
  border-color: #3a352b;
  color: var(--muted);
}

/* ---------- Android 原生应用更新 ---------- */
.android-update-dialog {
  width: min(400px, calc(100vw - 28px));
  max-width: none;
  max-height: calc(100dvh - 28px);
  margin: auto;
  padding: 0;
  border: 0;
  overflow: visible;
  background: transparent;
}

.android-update-dialog::backdrop {
  background: rgba(15, 18, 24, 0.6);
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
}

.android-update-surface {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  max-height: calc(100dvh - 28px);
  padding: 24px 22px 20px;
  overflow-y: auto;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface-strong);
  color: var(--ink);
  box-shadow: 0 26px 62px rgba(0, 0, 0, 0.34);
  text-align: center;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}

.android-update-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 58px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--accent), #14b8a6);
  color: #ffffff;
  box-shadow: 0 12px 25px rgba(15, 118, 110, 0.28);
}

.android-update-icon .lucide,
.android-update-icon [data-lucide] {
  width: 28px;
  height: 28px;
}

.android-update-surface h2 {
  margin: 0;
  font-size: 1.18rem;
  font-weight: 900;
}

.android-update-version {
  margin: -4px 0 0;
  color: var(--accent-strong);
  font-size: 0.9rem;
  font-weight: 850;
}

.android-update-notes {
  display: grid;
  gap: 7px;
  width: 100%;
  margin: 0;
  padding: 12px 14px 12px 32px;
  border-radius: 14px;
  background: var(--surface);
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.5;
  text-align: left;
}

.android-update-progress {
  display: grid;
  gap: 8px;
  width: 100%;
  padding: 12px 13px;
  border-radius: 14px;
  background: var(--accent-soft);
}

.android-update-progress[hidden] {
  display: none;
}

.android-update-progress-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 0.84rem;
  font-weight: 800;
}

.android-update-progress-head strong {
  color: var(--accent-strong);
  font-variant-numeric: tabular-nums;
}

.android-update-progress progress {
  width: 100%;
  height: 9px;
  overflow: hidden;
  border: 0;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  accent-color: var(--accent);
}

.android-update-progress p,
.android-update-status {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.45;
}

.android-update-status.is-error {
  color: var(--danger);
}

.android-update-actions {
  display: flex;
  gap: 10px;
  width: 100%;
  margin-top: 2px;
}

.android-update-later,
.android-update-confirm {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border-radius: 13px;
  font-size: 0.94rem;
  font-weight: 850;
}

.android-update-later {
  flex: 1 1 42%;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
}

.android-update-confirm {
  flex: 1 1 58%;
  gap: 7px;
  border: 0;
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 10px 22px rgba(15, 118, 110, 0.22);
}

.android-update-confirm .lucide,
.android-update-confirm [data-lucide] {
  width: 18px;
  height: 18px;
}

.android-update-later:disabled,
.android-update-confirm:disabled {
  cursor: default;
  opacity: 0.58;
}

:root[data-theme="dark"] .android-update-notes,
:root[data-theme="dark"] .android-update-later {
  border-color: #3a352b;
  background: #25221b;
}

/* overall usability and responsive polish */

.topbar {
  padding-right: max(14px, calc((100vw - 1120px) / 2));
  padding-left: max(14px, calc((100vw - 1120px) / 2));
}

:root[data-theme="dark"] .topbar {
  border-bottom-color: rgba(255, 255, 255, 0.08);
  background: #171714;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.2);
}

.searchbar {
  transition: border-color 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease;
}

.searchbar #clearSearchButton {
  color: var(--muted);
}

.library-storage-usage {
  margin-left: auto;
  white-space: nowrap;
}

.score-grid > .empty-state {
  min-height: clamp(300px, 50vh, 420px);
}

body.library-empty .fab-button {
  display: none !important;
}

button:disabled {
  opacity: 0.46;
  box-shadow: none;
}

@media (max-width: 560px) {
  .topbar {
    padding-right: max(12px, env(safe-area-inset-right));
    padding-left: max(12px, env(safe-area-inset-left));
  }

  .brand-lockup {
    gap: 9px;
  }

  .brand-mark {
    width: 44px;
    height: 44px;
    border-radius: 12px;
  }

  .brand-lockup h1 {
    font-size: 1.24rem;
  }

  .searchbar {
    height: 54px;
    margin-top: 10px;
    border-radius: 16px;
  }

  .library-filter-bar {
    margin-bottom: 14px;
  }

  .library-storage-usage {
    font-size: 0.72rem;
  }

  .score-grid > .empty-state {
    min-height: clamp(280px, 48vh, 380px);
    padding: 28px 18px;
    border-radius: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* 恢复旧版的轻量选中反馈：不再为控件绘制蓝色外框或外扩光环。 */
:where(button, input, textarea, select, [tabindex]):focus,
:where(button, input, textarea, select, [tabindex]):focus-visible {
  outline: none !important;
  outline-offset: 0 !important;
}

.searchbar:focus-within,
:root[data-theme="dark"] .searchbar:focus-within {
  border-color: var(--line);
  box-shadow: var(--shadow-soft);
}

.field input:focus,
.field select:focus,
.field textarea:focus,
.profile-birthday-button:focus-visible,
.folder-select-button:focus-visible,
.library-sort select:focus-visible,
:root[data-theme="dark"] .field input:focus,
:root[data-theme="dark"] .field select:focus,
:root[data-theme="dark"] .field textarea:focus,
:root[data-theme="dark"] .profile-birthday-button:focus-visible,
:root[data-theme="dark"] .folder-select-button:focus-visible {
  border-color: var(--line);
  box-shadow: none;
}

.fab-button:focus-visible {
  box-shadow: none;
  filter: drop-shadow(0 10px 18px rgba(31, 41, 51, 0.16));
}

/* 谱夹筛选按钮平均占满整行，不再为存储占用信息预留空间。 */
.library-filter-bar {
  display: block;
  width: 100%;
}

.library-filter-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  width: 100%;
  max-width: none;
  box-sizing: border-box;
}

.library-filter-button {
  width: 100%;
  min-width: 0;
  padding-right: 8px;
  padding-left: 8px;
}