/* 吉他谱沿用工作台设计令牌；谱图画布保持纯白以保留原图对比。 */
#view-guitar [hidden] { display: none !important; }
.guitar-view { padding-bottom: 32px; }
.guitar-page-head { display: flex; justify-content: space-between; align-items: end; gap: 20px; margin-bottom: 20px; }
.guitar-kicker { color: var(--text-3); font-size: 10px; font-weight: 700; letter-spacing: .13em; }
.guitar-page-head h2 { margin: 7px 0 4px; font-size: clamp(26px, 3vw, 36px); font-weight: 760; letter-spacing: -.045em; }
.guitar-page-head p:last-child, .guitar-editor-head p:last-child { color: var(--text-2); font-size: 12px; }
.guitar-head-actions, .guitar-reader-actions, .guitar-reader-footer, .guitar-pagination, .guitar-editor-foot { display: flex; align-items: center; gap: 9px; }
.guitar-head-actions { flex: none; }
.guitar-import-preview { display: flex; justify-content: space-between; align-items: center; gap: 24px; margin-bottom: 14px; padding: 18px 20px; border: 1px solid var(--border-strong); border-radius: var(--radius-surface); background: var(--surface); }
.guitar-import-preview h3 { margin: 5px 0 7px; font-size: 16px; letter-spacing: -.025em; }
.guitar-import-preview p:not(.guitar-kicker) { color: var(--text); font-size: 12px; line-height: 1.6; }
.guitar-import-preview small { display: block; margin-top: 7px; color: var(--text-3); font-size: 11px; line-height: 1.5; }
.guitar-import-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 7px; flex: none; }
.guitar-notice { margin-bottom: 14px; padding: 11px 14px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); color: var(--text-2); font-size: 12px; }
.guitar-notice.is-error { border-color: var(--danger); color: var(--danger); }
.guitar-layout { display: grid; grid-template-columns: 248px minmax(0, 1fr); min-height: 620px; overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-surface); background: var(--surface); }
.guitar-library { display: flex; flex-direction: column; min-width: 0; padding: 22px 13px 19px; border-right: 1px solid var(--border); }
.guitar-library-head { display: flex; justify-content: space-between; align-items: baseline; padding: 0 7px; }
.guitar-library-head strong { font-size: 15px; letter-spacing: -.02em; }
.guitar-library-head span { color: var(--text-3); font-size: 11px; font-variant-numeric: tabular-nums; }
.guitar-search-label { display: block; margin: 23px 7px 7px; color: var(--text-3); font-size: 10px; font-weight: 650; letter-spacing: .06em; }
.guitar-search { width: 100%; min-height: 42px; font-size: 12px; }
.guitar-list { display: grid; align-content: start; gap: 3px; margin-top: 18px; }
.guitar-list-empty { padding: 18px 9px; color: var(--text-3); font-size: 12px; line-height: 1.6; }
.guitar-song { display: grid; grid-template-columns: 32px minmax(0,1fr) 13px; align-items: center; gap: 8px; width: 100%; min-height: 67px; padding: 8px 7px; border-radius: 9px; text-align: left; }
.guitar-song:hover { background: var(--surface-subtle); }
.guitar-song.is-active { background: var(--surface-strong); }
.guitar-song-number { align-self: start; padding-top: 3px; color: var(--text-3); font-size: 10px; font-variant-numeric: tabular-nums; }
.guitar-song-copy { min-width: 0; }
.guitar-song-title { display: block; overflow: hidden; color: var(--text); font-size: 12px; font-weight: 700; text-overflow: ellipsis; white-space: nowrap; }
.guitar-song-meta { display: block; margin-top: 4px; color: var(--text-3); font-size: 10px; }
.guitar-song-arrow { color: var(--text-3); font-size: 15px; }
.guitar-library-foot { margin-top: auto; padding: 18px 7px 0; border-top: 1px solid var(--border); color: var(--text-3); font-size: 11px; line-height: 1.55; }
.guitar-stage { min-width: 0; padding: 26px clamp(18px, 3vw, 36px) 27px; background: var(--app-bg); }
.guitar-welcome { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 555px; text-align: center; }
.guitar-welcome-mark { display: grid; place-items: center; width: 72px; height: 72px; border: 1px solid var(--border-strong); border-radius: 18px; background: var(--surface); color: var(--text); font-size: 35px; }
.guitar-welcome-rule { width: 35px; height: 1px; margin: 29px 0 25px; background: var(--border-strong); }
.guitar-welcome h3 { font-size: 21px; letter-spacing: -.03em; }
.guitar-welcome p { max-width: 280px; margin: 9px 0 20px; color: var(--text-2); font-size: 12px; line-height: 1.6; }
.guitar-reader-head, .guitar-editor-head { display: flex; justify-content: space-between; align-items: start; gap: 16px; margin-bottom: 19px; }
.guitar-reader-head h3 { margin: 5px 0 4px; font-size: clamp(21px, 2.8vw, 31px); letter-spacing: -.04em; }
.guitar-reader-head p:last-child { color: var(--text-2); font-size: 11px; }
.guitar-reader-actions { flex: none; }
.guitar-focus-exit { flex: none; }
.guitar-danger { min-height: 44px; padding: 0 10px; border-radius: 9px; color: var(--danger); font-size: 12px; }
.guitar-danger:hover { background: var(--danger-soft); }
.guitar-mobile-back { display: none; }
.guitar-sheet-bed { position: relative; display: flex; justify-content: flex-start; align-items: flex-start; min-height: 455px; max-height: min(70vh, 850px); overflow-x: hidden; overflow-y: auto; padding: clamp(12px, 2.5vw, 26px); border: 1px solid var(--border); border-radius: 12px; background: var(--surface-subtle); }
.guitar-sheet-bed img { display: block; flex: 0 0 auto; width: 100%; max-width: none; height: auto; margin-inline: auto; background: #fff; object-fit: contain; cursor: pointer; user-select: none; -webkit-user-drag: none; }
.guitar-continuous { flex: 0 0 100%; width: 100%; min-width: 0; }
.guitar-continuous-page { width: 100%; margin: 0; padding: 0; }
.guitar-continuous-page.is-pending { min-height: 100vh; }
.guitar-continuous-page.is-error { display: grid; place-items: center; min-height: 60vh; color: var(--danger); font-size: 13px; }
.guitar-continuous-page img { width: 100%; height: auto; margin: 0; }
.guitar-sheet-message { align-self: center; margin: auto; color: var(--text-2); font-size: 12px; text-align: center; }
.guitar-image-retry { position: absolute; top: calc(50% + 24px); left: 50%; transform: translateX(-50%); }
.guitar-reader-footer { justify-content: space-between; flex-wrap: wrap; padding-top: 17px; }
.guitar-pagination { gap: 12px; }
.guitar-round { display: grid; place-items: center; width: 44px; height: 44px; border: 1px solid var(--border-strong); border-radius: 50%; background: var(--surface); font-size: 18px; }
.guitar-round:hover { background: var(--surface-strong); }
.guitar-pagination span { min-width: 45px; color: var(--text-2); font-size: 11px; font-variant-numeric: tabular-nums; text-align: center; }
.guitar-playback { display: flex; align-items: center; justify-content: flex-end; gap: 10px; }
.guitar-auto-play { min-width: 136px; min-height: 44px; white-space: nowrap; }
.guitar-bpm-label { display: flex; align-items: center; gap: 7px; color: var(--text-2); font-size: 11px; white-space: nowrap; }
.guitar-bpm-label input { width: 67px; min-height: 44px; padding: 0 7px; color: var(--text); font-size: 15px; font-variant-numeric: tabular-nums; text-align: center; }
.guitar-tempo-details { position: relative; flex: none; }
.guitar-tempo-details summary { display: grid; place-items: center; min-height: 44px; padding: 0 12px; border: 1px solid var(--border-strong); border-radius: var(--radius-control); color: var(--text-2); font-size: 12px; cursor: pointer; list-style: none; white-space: nowrap; }
.guitar-tempo-details summary::-webkit-details-marker { display: none; }
.guitar-tempo-details[open] summary { background: var(--surface-strong); color: var(--text); }
.guitar-tempo-panel { position: absolute; right: 0; bottom: calc(100% + 10px); z-index: 3; width: min(310px, calc(100vw - 24px)); padding: 16px; border: 1px solid var(--border-strong); border-radius: var(--radius-surface); background: var(--surface); box-shadow: 0 14px 42px #0002; }
.guitar-tempo-panel label { display: grid; grid-template-columns: 1fr 105px; align-items: center; gap: 10px; margin-bottom: 9px; color: var(--text-2); font-size: 12px; }
.guitar-tempo-panel input { min-width: 0; min-height: 42px; font-variant-numeric: tabular-nums; }
.guitar-tempo-panel p { color: var(--text-3); font-size: 11px; line-height: 1.55; }
.guitar-tempo-panel .guitar-tempo-error { margin-top: 7px; color: var(--danger); }
body.guitar-focus-open { overflow: hidden; }
.guitar-reader.is-focus { position: fixed; inset: 0; z-index: 120; display: flex; flex-direction: column; width: 100vw; height: 100dvh; margin: 0; padding: max(12px, env(safe-area-inset-top)) max(18px, env(safe-area-inset-right)) max(12px, env(safe-area-inset-bottom)) max(18px, env(safe-area-inset-left)); background: var(--app-bg); }
.guitar-reader.is-focus .guitar-reader-head { flex: none; align-items: center; min-height: 52px; margin-bottom: 9px; }
.guitar-reader.is-focus .guitar-reader-head .guitar-kicker, .guitar-reader.is-focus .guitar-reader-actions, .guitar-reader.is-focus .guitar-mobile-back { display: none; }
.guitar-reader.is-focus .guitar-reader-head h3 { margin: 0 0 3px; font-size: clamp(17px, 2vw, 23px); }
.guitar-reader.is-focus .guitar-sheet-bed { flex: 1; width: 100%; min-height: 0; max-height: none; padding: 0; border-radius: 9px; overscroll-behavior: contain; }
.guitar-reader.is-focus .guitar-sheet-bed img { cursor: default; }
.guitar-reader.is-focus .guitar-sheet-message:not(:empty) { position: absolute; top: 14px; left: 50%; z-index: 2; width: max-content; max-width: 85%; margin: 0; padding: 9px 14px; transform: translateX(-50%); border: 1px solid var(--border); border-radius: 8px; background: var(--surface); }
.guitar-reader.is-focus .guitar-reader-footer { flex: none; justify-content: space-between; padding-top: 10px; }
.guitar-reader.is-focus .guitar-pagination { gap: 23px; }
.guitar-editor { max-width: 800px; }
.guitar-editor-head h3 { margin: 6px 0 5px; font-size: clamp(22px, 2.8vw, 30px); letter-spacing: -.04em; }
.guitar-field { display: grid; gap: 9px; max-width: 540px; margin: 29px 0; font-size: 12px; font-weight: 650; }
.guitar-field input { font-size: 15px; }
.guitar-pages-heading { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.guitar-pages-heading strong { font-size: 13px; }
.guitar-pages-heading span { color: var(--text-3); font-size: 11px; }
.guitar-page-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 12px; margin-bottom: 12px; }
.guitar-page-tile { min-width: 0; padding: 9px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); }
.guitar-page-thumb { display: grid; place-items: center; height: 130px; overflow: hidden; border-radius: 5px; background: #f4f4f2; color: #6f726e; font-size: 11px; }
.guitar-page-thumb img { max-width: 100%; max-height: 100%; object-fit: contain; }
.guitar-page-tile-foot { display: flex; align-items: center; justify-content: space-between; gap: 4px; margin-top: 9px; }
.guitar-page-tile-foot span { overflow: hidden; color: var(--text-2); font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.guitar-page-tile-actions { display: flex; gap: 2px; }
.guitar-page-tile-actions button { width: 30px; height: 30px; border-radius: 6px; color: var(--text-2); font-size: 14px; }
.guitar-page-tile-actions button:hover { background: var(--surface-subtle); }
.guitar-drop { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 133px; border: 1px dashed var(--border-strong); border-radius: 10px; background: var(--surface); cursor: pointer; text-align: center; }
.guitar-drop:hover { background: var(--surface-subtle); }
.guitar-drop-icon { color: var(--text-2); font-size: 24px; line-height: 1; }
.guitar-drop strong { margin-top: 7px; font-size: 12px; }
.guitar-drop small { margin-top: 5px; color: var(--text-3); font-size: 10px; }
.guitar-drop input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.guitar-editor-foot { justify-content: space-between; margin-top: 20px; }
.guitar-editor-foot p { color: var(--text-2); font-size: 12px; }
#view-guitar button:focus-visible, #view-guitar .guitar-drop:focus-within { outline: 2px solid var(--accent); outline-offset: 2px; }

@media (max-width: 900px) {
  .guitar-layout { grid-template-columns: 214px minmax(0,1fr); }
  .guitar-page-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .guitar-reader-actions { flex-wrap: wrap; justify-content: flex-end; }
}
@media (max-width: 760px) {
  .guitar-page-head { align-items: start; flex-direction: column; gap: 14px; }
  .guitar-page-head h2 { font-size: 27px; }
  .guitar-head-actions { width: 100%; }
  .guitar-head-actions .primary-btn { flex: 1; }
  .guitar-head-actions { flex-wrap: wrap; }
  .guitar-head-actions .ghost-btn { flex: 1; }
  .guitar-import-preview { flex-direction: column; align-items: stretch; padding: 16px; }
  .guitar-import-actions { justify-content: stretch; }
  .guitar-import-actions button { flex: 1; }
  .guitar-layout { display: block; min-height: 0; }
  .guitar-library { min-height: 55vh; padding: 19px 13px; border-right: 0; }
  .guitar-stage { min-height: 0; padding: 17px 13px 21px; }
  .guitar-layout.is-library .guitar-stage { display: none; }
  .guitar-layout.is-reading .guitar-library, .guitar-layout.is-editing .guitar-library { display: none; }
  .guitar-mobile-back { display: inline-block; min-height: 40px; margin: -6px 0 11px -5px; padding: 0 5px; color: var(--text-2); font-size: 12px; }
  .guitar-reader-head { align-items: flex-end; }
  .guitar-reader-actions { gap: 1px; }
  .guitar-reader-actions .ghost-btn { padding: 0 8px; }
  .guitar-sheet-bed { min-height: 380px; max-height: 67vh; padding: 11px; }
  .guitar-reader-footer { gap: 13px; }
  .guitar-reader.is-focus { padding-right: max(8px, env(safe-area-inset-right)); padding-left: max(8px, env(safe-area-inset-left)); }
  .guitar-reader.is-focus .guitar-reader-head { padding: 0 6px; }
  .guitar-reader.is-focus .guitar-sheet-bed { min-height: 0; max-height: none; padding: 0; }
  .guitar-reader.is-focus .guitar-reader-footer { justify-content: center; gap: 8px; }
  .guitar-reader.is-focus .guitar-playback { width: 100%; justify-content: center; gap: 7px; }
  .guitar-reader.is-focus .guitar-auto-play { flex: 1; min-width: 0; }
  .guitar-reader.is-focus .guitar-bpm-label { gap: 4px; }
  .guitar-reader.is-focus .guitar-bpm-label input { width: 58px; }
  .guitar-reader.is-focus .guitar-tempo-details summary { padding: 0 8px; }
  .guitar-welcome { min-height: 55vh; }
}
@media (max-width: 420px) {
  .guitar-page-grid { gap: 8px; }
  .guitar-page-thumb { height: 108px; }
  .guitar-reader-head { flex-direction: column; align-items: stretch; }
  .guitar-reader-actions { justify-content: flex-start; }
  .guitar-reader.is-focus .guitar-reader-head { flex-direction: row; align-items: center; }
  .guitar-reader.is-focus .guitar-reader-head h3 { font-size: 17px; }
  .guitar-reader.is-focus .guitar-focus-exit { padding: 0 8px; white-space: nowrap; }
  .guitar-editor-head { gap: 9px; }
}
@media (prefers-reduced-motion: reduce) {
  #view-guitar * { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}