:root{--radius-s: 8px;--radius-m: 12px;--radius-l: 18px;--font-ui: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-mono: "SF Mono", "Menlo", "Consolas", ui-monospace, monospace;--song-scale: 1;--song-title-size: calc(22px * var(--song-scale));--lyrics-font-size: calc(15px * var(--song-scale));--lyrics-line-height: calc(24px * var(--song-scale));--chord-chip-size: calc(13px * var(--song-scale));--chord-chip-line-height: calc(18px * var(--song-scale));--section-label-size: calc(12.5px * var(--song-scale));--section-input-size: calc(13px * var(--song-scale));--section-key-size: calc(11.5px * var(--song-scale));--chords-line-size: calc(14px * var(--song-scale));--instrumental-hint-size: calc(13px * var(--song-scale));--comment-font-size: calc(13.5px * var(--song-scale))}[data-theme=light]{color-scheme:light;--bg: #F2F2F7;--field-border: #8A8A8E;--surface: #FFFFFF;--surface-2: #F7F7FA;--surface-pressed: #E9E9EE;--border: rgba(60, 60, 67, .13);--text: #1C1C1E;--text-secondary: #6E6E73;--text-tertiary: #AEAEB2;--accent: #007AFF;--danger: #FF3B30;--chip-bg: #E8F1FF;--chip-bg-hover: #D9E9FF;--chip-text: #0A66E0;--overlay: rgba(0, 0, 0, .25);--shadow-card: 0 1px 2px rgba(0,0,0,.06), 0 6px 16px rgba(0,0,0,.06);--shadow-row: 0 .5px 1.5px rgba(0,0,0,.05);--shadow-pop: 0 8px 30px rgba(0,0,0,.18);--chord-color-0: #7B61FF;--chord-color-1: #5E3FBE;--chord-color-2: #2D7DD2;--chord-color-3: #00d9ff;--chord-color-4: #56d4ca;--chord-color-5: #1E9E4A;--chord-color-6: #6FA82E;--chord-color-7: #B07D00;--chord-color-8: #D9601A;--chord-color-9: #D4302F;--chord-color-10: #ff00cc;--chord-color-11: #ff6bb0}[data-theme=dark]{color-scheme:dark;--bg: #000000;--field-border: #6C6C70;--surface: #1C1C1E;--surface-2: #2C2C2E;--surface-pressed: #38383A;--border: rgba(255, 255, 255, .12);--text: #F2F2F7;--text-secondary: #9B9BA1;--text-tertiary: #6C6C70;--accent: #0A84FF;--danger: #FF453A;--chip-bg: rgba(10, 132, 255, .2);--chip-bg-hover: rgba(10, 132, 255, .32);--chip-text: #7DB8FF;--overlay: rgba(0, 0, 0, .5);--shadow-card: 0 1px 2px rgba(0,0,0,.3), 0 6px 20px rgba(0,0,0,.35);--shadow-row: none;--shadow-pop: 0 12px 36px rgba(0,0,0,.55);--chord-color-0: #7B61FF;--chord-color-1: #5E3FBE;--chord-color-2: #2D7DD2;--chord-color-3: #48c3c8;--chord-color-4: #08f9d1;--chord-color-5: #00792a;--chord-color-6: #2cff01;--chord-color-7: #ffdd00;--chord-color-8: #D9601A;--chord-color-9: #D4302F;--chord-color-10: #ff00cc;--chord-color-11: #ff6bb0}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:var(--font-ui);-webkit-font-smoothing:antialiased;overscroll-behavior-y:none}input,button,textarea{font-family:inherit;color:inherit}button{cursor:pointer}#root{min-height:100vh}.app{max-width:720px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column;background:var(--bg)}.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:8px;padding:10px 14px;padding-top:max(10px,env(safe-area-inset-top));background:color-mix(in srgb,var(--bg) 85%,transparent);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-bottom:1px solid var(--border)}.topbar-title{flex:1;font-size:17px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;border:none;background:none;color:var(--text);text-align:left;padding:4px 6px;margin:-4px -6px;border-radius:var(--radius-s);font-family:inherit;cursor:text}.topbar-title:active{background:var(--surface-2)}@media (max-width: 640px){.topbar-title-song{visibility:hidden}}.topbar-title-input{flex:1;font-size:17px;font-weight:600;border:none;background:var(--surface-2);color:var(--text);padding:4px 8px;border-radius:var(--radius-s);font-family:inherit}.topbar-title-input:focus{outline:none;box-shadow:0 0 0 2px var(--accent) inset}.icon-btn{width:40px;height:40px;border-radius:50%;border:none;background:var(--surface-2);display:flex;align-items:center;justify-content:center;font-size:16px;color:var(--text);flex-shrink:0;transition:background .12s ease,transform .1s ease}.icon-btn:active{transform:scale(.92);background:var(--surface-pressed)}.back-btn{border:none;background:none;color:var(--accent);font-size:17px;padding:4px 2px;display:flex;align-items:center;gap:2px;flex-shrink:0}.back-btn:active{opacity:.6}.theme-menu-wrap{position:relative}.theme-menu-pop{position:absolute;top:42px;right:0;background:var(--surface);border-radius:var(--radius-m);box-shadow:var(--shadow-pop);border:1px solid var(--border);padding:8px;z-index:40}.segmented{display:inline-flex;background:var(--surface-2);border-radius:var(--radius-s);padding:2px;gap:2px}.segmented button{border:none;background:transparent;color:var(--text-secondary);font-size:13px;font-weight:500;padding:6px 12px;border-radius:7px;transition:background .15s ease,color .15s ease;white-space:nowrap}.segmented button.active{background:var(--surface);color:var(--text);box-shadow:0 1px 3px #0000001f}.song-list{flex:1;padding:12px 14px 100px;display:flex;flex-direction:column;gap:10px}.song-card{background:var(--surface);border-radius:var(--radius-m);padding:14px 16px 14px 8px;border:1px solid var(--border);box-shadow:var(--shadow-row);display:flex;align-items:center;justify-content:space-between;gap:12px;transition:transform .1s ease,background .1s 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scale(1.01);pointer-events:none}.song-card.drop-before:before,.song-card.drop-after:after{content:"";position:absolute;left:16px;right:16px;height:3px;background:var(--accent);border-radius:999px}.song-card.drop-before:before{top:-6px}.song-card.drop-after:after{bottom:-6px}.song-card-index{flex-shrink:0;min-width:18px;font-family:var(--font-mono);font-size:13px;font-weight:600;font-variant-numeric:tabular-nums;color:var(--text-tertiary);text-align:right}.is-locked .song-card-index{margin-left:2px}.song-card-main{min-width:0;flex:1}.song-card-title{font-size:16px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.song-card-meta{font-size:13px;color:var(--text-secondary);margin-top:2px}[data-chord-style=color] .song-card-key{font-family:var(--font-mono);font-weight:700;padding:1px 6px;border-radius:6px;color:var(--chip-text);background:var(--chip-bg)}[data-chord-style=color] 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14%,var(--surface))}.song-card-delete{border:none;background:none;color:var(--text-tertiary);font-size:18px;width:30px;height:30px;border-radius:50%;flex-shrink:0}.song-card-delete:active{background:var(--surface-2);color:var(--danger)}.empty-state{margin-top:20vh;text-align:center;color:var(--text-secondary);padding:0 30px}.empty-state-title{font-size:18px;font-weight:600;color:var(--text);margin-bottom:6px}.screen-state{flex:1;display:flex;align-items:center;justify-content:center;text-align:center;padding:40px 30px;color:var(--text-secondary)}.screen-state-title{font-size:20px;font-weight:600;color:var(--text);margin-bottom:8px}.screen-state-text{font-size:14px;margin-bottom:16px}.action-btn{border:none;border-radius:var(--radius-s);padding:10px 18px;font-size:15px;font-weight:600;background:var(--accent);color:#fff;box-shadow:0 4px 16px #00000029}.action-btn:active{transform:scale(.97)}.action-btn:disabled{opacity:.6;cursor:not-allowed;box-shadow:none}.fab{position:fixed;bottom:28px;right:max(24px,calc((100vw - 720px)/2 + 24px));width:56px;height:56px;border-radius:50%;background:var(--accent);color:#fff;border:none;font-size:26px;font-weight:400;box-shadow:0 8px 24px #00000040;z-index:25;display:flex;align-items:center;justify-content:center}.fab:active{transform:scale(.94)}.fab:disabled{opacity:.45;pointer-events:none;transform:none}.save-banner{position:fixed;bottom:24px;left:50%;transform:translate(-50%);width:min(420px,calc(100vw - 32px));min-width:200px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-m);box-shadow:var(--shadow-card);padding:10px 16px;display:flex;align-items:center;gap:12px;color:var(--danger);z-index:60}.save-banner>span{flex:1;min-width:0}.save-banner button{border:none;border-radius:var(--radius-s);padding:6px 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12px;background:var(--surface-2);color:var(--text-secondary);border-bottom:1px solid var(--border);font-size:12.5px;letter-spacing:.01em}.stale-notice-retry{flex:none;border:0;background:none;padding:0;color:var(--accent);font:inherit;font-weight:600;cursor:pointer}@media (max-width: 640px){.stale-notice{padding:5px 8px;gap:8px;font-size:min(12.5px,calc((100vw - 24px) / 34.5));letter-spacing:0}}.is-locked .song-card-delete,.is-locked .song-card-handle,.is-locked .line-delete,.is-locked .line-drag-handle,.is-locked .fab,.is-locked .add-line-menu,.is-locked .repeat-clear,.is-locked .repeat-pill.is-empty,.is-locked .section-key-pill.is-empty,.is-locked .instrumental-hint,.is-locked .canvas-hint{display:none!important}.is-locked .lyrics-strip.is-empty:after{content:""}.is-locked .lyrics-strip,.is-locked .chords-strip,.is-locked .chords-only-row,.is-locked .section-content,.is-locked .title-input,.is-locked .meta-bar input,.is-locked .meta-bar select{pointer-events:none}.is-locked 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var(--border);font-size:11.5px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--text-secondary)}.conflict-line{padding:4px 11px;font-family:var(--font-mono);font-size:12.5px;line-height:1.5;white-space:pre-wrap;overflow-wrap:anywhere;border-bottom:1px solid var(--border)}.conflict-line:last-child{border-bottom:none}.conflict-line.is-changed{background:var(--chip-bg);color:var(--chip-text)}.conflict-empty{color:var(--text-tertiary)}.conflict-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.conflict-count{margin-right:auto;font-size:12.5px;color:var(--text-secondary)}@media (max-width: 640px){.conflict-columns{grid-template-columns:1fr}}.song-card-changed{display:inline-block;margin-left:8px;padding:1px 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var(--border);background:transparent;color:var(--text-secondary);font-family:var(--font-ui);font-size:12px;font-weight:600;padding:6px 12px;border-radius:999px;cursor:pointer;white-space:nowrap}.comments-toggle.is-on{background:var(--chip-bg);border-color:transparent;color:var(--chip-text)}.comments-toggle:active{transform:scale(.96)}.comments-toggle svg{width:15px;height:15px;flex:none}.text-scale-row{display:flex;align-items:center;gap:10px;margin-top:2px}.text-scale-row label{font-size:12px;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.03em}.text-scale-row input[type=range]{flex:1;-webkit-appearance:none;-moz-appearance:none;appearance:none;height:4px;border-radius:999px;background:var(--surface-2)}.text-scale-row input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:18px;height:18px;border-radius:50%;background:var(--accent);box-shadow:0 2px 6px #00000040}.text-scale-row input[type=range]::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:var(--accent);border:none;box-shadow:0 2px 6px #00000040}.text-scale-value{font-size:13px;font-weight:600;color:var(--text-secondary);min-width:42px;text-align:right}.original-key-note{border:none;background:none;color:var(--text-tertiary);font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.03em;padding:0;margin-top:-4px;align-self:flex-start;cursor:pointer}.original-key-note:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.original-key-note:hover{color:var(--text-secondary)}.canvas{flex:1;padding:14px 16px 160px;min-height:60vh}.canvas-top-area{display:flex;align-items:center;justify-content:center;gap:6px;width:100%;border:none;background:var(--surface-2);color:var(--text-secondary);font-size:13px;font-weight:500;padding:8px;border-radius:var(--radius-s);margin-bottom:10px;transition:background .12s ease}.canvas-top-area:active{background:var(--surface-pressed)}.line-row{position:relative;margin-bottom:6px;border-radius:0;display:flex;align-items:flex-start;gap:8px}.line-row[data-line-mode=both]:not([data-line-type=section]) .line-content{display:flex;flex-direction:column;gap:6px;padding-top:6px}.line-row[data-line-type=chords]{margin-top:16px;margin-bottom:16px}.line-row[data-line-type=chords] .line-content{padding-top:10px;padding-bottom:10px}.line-row .line-content{flex:1;min-width:0}.section-content{display:flex;align-items:center;flex-wrap:wrap;gap:10px}.line-row:hover .line-delete{opacity:1}.line-row.is-focused{background:var(--surface-2);box-shadow:inset 3px 0 0 var(--accent);padding-left:6px;margin-left:-6px}.chords-strip{position:relative;height:calc(24px * var(--song-scale));cursor:text}.chords-strip.empty-hint:before{content:""}.chord-chip{position:absolute;top:0;transform:translate(-2px);background:var(--chip-bg);color:var(--chip-text);font-family:var(--font-mono);font-weight:700;font-size:var(--chord-chip-size);padding:1px 6px;border-radius:6px;white-space:nowrap;line-height:var(--chord-chip-line-height);z-index:2;cursor:grab;touch-action:none;-webkit-user-select:none;user-select:none}.chord-chip:active{background:var(--chip-bg-hover)}[data-chord-style=color] .chord-chip[data-chord-semitone="0"]{color:var(--chord-color-0);background:color-mix(in srgb,var(--chord-color-0) 14%,var(--surface))}[data-chord-style=color] .chord-chip[data-chord-semitone="1"]{color:var(--chord-color-1);background:color-mix(in srgb,var(--chord-color-1) 14%,var(--surface))}[data-chord-style=color] .chord-chip[data-chord-semitone="2"]{color:var(--chord-color-2);background:color-mix(in srgb,var(--chord-color-2) 14%,var(--surface))}[data-chord-style=color] .chord-chip[data-chord-semitone="3"]{color:var(--chord-color-3);background:color-mix(in srgb,var(--chord-color-3) 14%,var(--surface))}[data-chord-style=color] .chord-chip[data-chord-semitone="4"]{color:var(--chord-color-4);background:color-mix(in srgb,var(--chord-color-4) 14%,var(--surface))}[data-chord-style=color] .chord-chip[data-chord-semitone="5"]{color:var(--chord-color-5);background:color-mix(in srgb,var(--chord-color-5) 14%,var(--surface))}[data-chord-style=color] .chord-chip[data-chord-semitone="6"]{color:var(--chord-color-6);background:color-mix(in srgb,var(--chord-color-6) 14%,var(--surface))}[data-chord-style=color] .chord-chip[data-chord-semitone="7"]{color:var(--chord-color-7);background:color-mix(in srgb,var(--chord-color-7) 14%,var(--surface))}[data-chord-style=color] .chord-chip[data-chord-semitone="8"]{color:var(--chord-color-8);background:color-mix(in srgb,var(--chord-color-8) 14%,var(--surface))}[data-chord-style=color] .chord-chip[data-chord-semitone="9"]{color:var(--chord-color-9);background:color-mix(in srgb,var(--chord-color-9) 14%,var(--surface))}[data-chord-style=color] .chord-chip[data-chord-semitone="10"]{color:var(--chord-color-10);background:color-mix(in srgb,var(--chord-color-10) 14%,var(--surface))}[data-chord-style=color] .chord-chip[data-chord-semitone="11"]{color:var(--chord-color-11);background:color-mix(in srgb,var(--chord-color-11) 14%,var(--surface))}[data-chord-style=color] .chords-only-row .chord-token[data-chord-semitone="0"]{color:var(--chord-color-0)}[data-chord-style=color] .chords-only-row .chord-token[data-chord-semitone="1"]{color:var(--chord-color-1)}[data-chord-style=color] .chords-only-row .chord-token[data-chord-semitone="2"]{color:var(--chord-color-2)}[data-chord-style=color] .chords-only-row .chord-token[data-chord-semitone="3"]{color:var(--chord-color-3)}[data-chord-style=color] .chords-only-row .chord-token[data-chord-semitone="4"]{color:var(--chord-color-4)}[data-chord-style=color] .chords-only-row .chord-token[data-chord-semitone="5"]{color:var(--chord-color-5)}[data-chord-style=color] .chords-only-row .chord-token[data-chord-semitone="6"]{color:var(--chord-color-6)}[data-chord-style=color] .chords-only-row .chord-token[data-chord-semitone="7"]{color:var(--chord-color-7)}[data-chord-style=color] .chords-only-row .chord-token[data-chord-semitone="8"]{color:var(--chord-color-8)}[data-chord-style=color] .chords-only-row .chord-token[data-chord-semitone="9"]{color:var(--chord-color-9)}[data-chord-style=color] .chords-only-row .chord-token[data-chord-semitone="10"]{color:var(--chord-color-10)}[data-chord-style=color] .chords-only-row .chord-token[data-chord-semitone="11"]{color:var(--chord-color-11)}[data-chord-style=plain] .chord-chip{background:none;color:var(--text);font-weight:400;padding:1px 0;border-radius:0;transform:none}[data-chord-style=plain] .chord-chip:active{background:none}[data-chord-style=plain] .chords-only-row,[data-chord-style=plain] .chords-only-row .chord-token{color:var(--text);font-weight:400}@media (pointer: coarse){.chord-chip,.chords-only-row.editable .chord-token{margin:-6px -4px;padding:7px 10px}}@media (pointer: coarse){[data-chord-style=plain] .chord-chip{margin:-6px -10px;padding:7px 10px}}.chord-chip.is-armed,.chords-only-row.editable .chord-token.is-armed{animation:chord-wake .28s ease,chord-blink .55s ease-in-out .28s infinite;z-index:3}@keyframes chord-wake{0%{scale:1}50%{scale:1.18}to{scale:1}}@keyframes chord-blink{0%,to{opacity:1}50%{opacity:.3}}.chord-drag-ghost{position:fixed;z-index:60;transform:translate(-50%,-50%) scale(1.35);background:var(--chip-bg-hover);color:var(--chip-text);font-family:var(--font-mono);font-weight:700;font-size:calc(var(--chord-chip-size) * 1.1);padding:4px 12px;border-radius:8px;white-space:nowrap;pointer-events:none;box-shadow:var(--shadow-pop);animation:chord-blink .55s ease-in-out infinite}.chord-drag-ghost.is-copy{background:var(--accent);color:var(--bg, #fff)}.chord-drag-copy-badge{position:absolute;top:-7px;left:-7px;display:flex;align-items:center;justify-content:center;width:16px;height:16px;border-radius:50%;background:var(--accent);color:#fff;box-shadow:var(--shadow-pop)}.chord-drag-copy-badge svg{width:11px;height:11px;stroke-width:3}.line-drag-handle{flex:0 0 auto;margin-right:6px;color:var(--muted, currentColor);opacity:.45;cursor:grab;touch-action:none;transition:opacity .12s}.line-drag-handle:hover{opacity:1;color:var(--accent, currentColor)}.line-row.is-dragging{opacity:.3}.line-drag-ghost{position:fixed;z-index:60;transform:translate(-50%,-50%);display:flex;align-items:center;gap:6px;max-width:60vw;padding:6px 12px;border-radius:8px;background:var(--chip-bg-hover);color:var(--chip-text);box-shadow:var(--shadow-pop);pointer-events:none;white-space:nowrap;overflow:hidden}.line-drag-ghost.is-copy{background:var(--accent);color:var(--bg, #fff)}.line-drag-ghost-icon{flex:0 0 auto;opacity:.8}.line-drag-ghost-text{font-family:var(--font-mono);font-weight:700;font-size:calc(var(--chord-chip-size) * 1.05);overflow:hidden;text-overflow:ellipsis}.line-row.drop-target{background:var(--chip-bg);outline:2px dashed var(--accent);outline-offset:2px}.canvas-empty-area.drop-target{background:var(--chip-bg);border-radius:var(--radius-m);outline:2px dashed var(--accent);outline-offset:-2px}.lyrics-strip{min-height:var(--lyrics-line-height);font-family:var(--font-mono);font-size:var(--lyrics-font-size);line-height:var(--lyrics-line-height);color:var(--text);white-space:pre;cursor:text;border-radius:6px;padding:0 1px}.lyrics-strip.is-empty{color:var(--text-tertiary)}.lyrics-strip.is-empty:after{content:attr(data-placeholder)}.lyrics-input{width:100%;border:none;background:var(--surface-2);font-family:var(--font-mono);font-size:var(--lyrics-font-size);line-height:var(--lyrics-line-height);color:var(--text);padding:0 1px}.lyrics-input:focus{outline:none;box-shadow:0 0 0 2px var(--accent) inset}.comment-row{margin-top:4px;margin-bottom:8px}.comment-content{border-left:2px solid var(--border);padding-left:10px}.comment-input{display:block;width:100%;border:none;background:transparent;resize:none;overflow:hidden;font-family:var(--font-ui);font-style:italic;font-size:var(--comment-font-size);line-height:1.45;color:var(--text-secondary);padding:2px 0}.comment-input::placeholder{color:var(--text-tertiary);font-style:italic}.comment-input:focus{outline:none;color:var(--text);background:var(--surface-2);border-radius:6px}.comment-input[readonly]{cursor:default}.comment-input[readonly]:focus{background:transparent;color:var(--text-secondary)}.section-row{margin-top:30px;margin-bottom:18px;padding-top:10px;padding-bottom:10px;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.section-label{display:inline-block;font-family:var(--font-ui);font-size:var(--section-label-size);font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--accent);background:var(--chip-bg);padding:5px 12px;border-radius:999px;cursor:text}.section-label.is-empty{color:var(--text-tertiary);background:var(--surface-2)}.section-input{width:100%;max-width:260px;border:none;background:var(--surface-2);font-family:var(--font-ui);font-size:var(--section-input-size);font-weight:700;text-transform:uppercase;letter-spacing:.03em;color:var(--text);padding:6px 12px;border-radius:999px}.section-input:focus{outline:none;box-shadow:0 0 0 2px var(--accent) inset}.section-key-pill{display:inline-block;margin-left:8px;border:none;font-family:var(--font-mono);font-size:var(--section-key-size);font-weight:700;color:var(--text-secondary);background:var(--surface-2);padding:4px 10px;border-radius:999px}.section-key-pill.is-empty{color:var(--text-tertiary);font-weight:500}.section-key-pill.readonly{cursor:default}.section-key-input{margin-left:8px;width:64px;border:none;background:var(--surface-2);font-family:var(--font-mono);font-size:var(--section-key-size);font-weight:700;color:var(--text);padding:4px 10px;border-radius:999px}.section-key-input:focus{outline:none;box-shadow:0 0 0 2px var(--accent) inset}.chords-only-row{font-family:var(--font-mono);font-size:var(--chords-line-size);font-weight:700;color:var(--chip-text);line-height:calc(30px * var(--song-scale));min-height:calc(30px * var(--song-scale));padding:0 2px}.chords-flow{display:flex;flex-wrap:wrap;align-items:baseline;row-gap:calc(2px * var(--song-scale));padding:calc(3px * var(--song-scale)) 0}.chords-flow-cell{display:flex;flex-wrap:wrap;align-items:baseline;column-gap:calc(9px * var(--song-scale));padding:0 calc(11px * var(--song-scale));border-left:1px solid var(--border)}.chords-flow-cell:last-child{border-right:1px solid var(--border)}.chords-flow .chords-flow-cell .repeat-tag{margin-left:calc(1px * var(--song-scale))}.chords-only-row .chord-token{padding:2px 4px;border-radius:5px;-webkit-user-select:none;user-select:none}.chords-only-row .sep{color:var(--text-tertiary);margin:0 6px;font-weight:400}.chords-only-row .repeat-tag{color:var(--text-secondary);font-weight:600;font-size:calc(12px * var(--song-scale));margin-left:8px}.repeat-pill{margin-left:10px;flex-shrink:0;border:none;background:var(--surface-2);color:var(--text-secondary);font-family:var(--font-mono);font-size:calc(13px * var(--song-scale));font-weight:700;padding:2px 10px;border-radius:999px;cursor:pointer;line-height:1.4;transition:background .12s ease,color .12s ease}.repeat-pill:hover{background:var(--surface-3);color:var(--text)}.repeat-pill.is-empty{background:transparent;color:var(--text-tertiary);font-weight:500;border:1px dashed var(--border)}.repeat-pill.is-empty:hover{background:var(--surface-2);color:var(--text-secondary)}.repeat-control{margin-left:10px;flex-shrink:0;display:inline-flex;align-items:center;gap:4px}.repeat-control-sign{font-family:var(--font-mono);font-size:calc(15px * var(--song-scale));font-weight:700;color:var(--text-secondary)}.repeat-input{width:48px;border:none;background:var(--surface-2);font-family:var(--font-mono);font-size:calc(13px * var(--song-scale));font-weight:700;color:var(--text);padding:2px 6px;border-radius:999px;text-align:center}.repeat-input:focus{outline:none;box-shadow:0 0 0 2px var(--accent) inset}.repeat-input::-webkit-outer-spin-button,.repeat-input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.repeat-clear{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border:none;background:var(--surface-2);color:var(--text-tertiary);border-radius:50%;cursor:pointer;flex-shrink:0}.repeat-clear:hover{background:var(--surface-3);color:var(--text)}.chords-only-row.editable{cursor:text;border-radius:var(--radius-s);display:flex;align-items:center;flex-wrap:wrap;gap:0}.chords-only-row.editable:hover{background:var(--surface-2)}.chords-only-row.editable .chord-token{cursor:grab;touch-action:none}.instrumental-icon{color:var(--text-tertiary);margin-right:8px;flex-shrink:0}.instrumental-hint{color:var(--text-tertiary);font-family:var(--font-ui);font-size:var(--instrumental-hint-size);font-weight:400}.line-delete{position:static;opacity:.45;transition:opacity .12s ease,background .12s ease;width:24px;height:24px;border-radius:50%;border:none;background:var(--surface-2);color:var(--text-tertiary);font-size:12px;display:flex;align-items:center;justify-content:center;box-shadow:0 1px 3px #00000026;flex-shrink:0}.line-delete:active{color:var(--danger);opacity:1}.canvas-empty-area{min-height:120px}.canvas-hint{margin-top:24px;text-align:center;color:var(--text-tertiary);font-size:13px}.insert-indicator{height:3px;margin:6px 2px;border-radius:2px;background:var(--accent);opacity:.9;animation:insert-indicator-pulse 1.1s ease-in-out infinite}@keyframes insert-indicator-pulse{0%,to{opacity:.45}50%{opacity:1}}.picker-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;background:transparent}.add-line-menu{position:fixed;z-index:51;width:220px;background:var(--surface);border-radius:var(--radius-m);box-shadow:var(--shadow-pop);border:1px solid var(--border);padding:6px;display:flex;flex-direction:column;gap:2px}.add-line-menu-context{font-size:11.5px;font-weight:600;color:var(--text-secondary);padding:6px 10px 8px;border-bottom:1px solid var(--border);margin-bottom:2px}.add-line-menu-item{display:flex;align-items:center;gap:10px;border:none;background:none;color:var(--text);padding:9px 10px;border-radius:var(--radius-s);text-align:left;font-size:14px;font-weight:600}.add-line-menu-item:active{background:var(--surface-2)}.add-line-menu-item svg{color:var(--accent);flex-shrink:0}.add-line-menu-item span{display:flex;flex-direction:column;gap:1px}.add-line-menu-item small{font-size:11px;font-weight:400;color:var(--text-secondary)}.chord-context-menu{width:190px}.chord-context-menu-title{font-family:var(--font-mono);font-size:13px;font-weight:700;color:var(--text-secondary);padding:6px 10px 4px}.add-line-menu-item.compact{padding:8px 10px;font-weight:500}.add-line-menu-item.danger{color:var(--danger)}.add-line-menu-item.danger svg{color:var(--danger)}.chord-picker{position:fixed;z-index:51;width:240px;max-height:320px;background:var(--surface);border-radius:var(--radius-m);box-shadow:var(--shadow-pop);border:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden}.chord-picker:has(.fretboard-editor){width:min(380px,calc(100vw - 20px));max-height:none;padding:10px;gap:8px}.chord-picker-neck-header{display:flex}.chord-picker-neck-back{border:none;background:none;color:var(--text-secondary);font-size:13px;font-weight:600;padding:4px 2px}.chord-picker-neck-back:hover{color:var(--text)}.chord-picker-neck-btn{flex-shrink:0;border:1px solid var(--border);background:var(--surface-2);color:var(--text);font-size:13px;font-weight:600;padding:7px 10px;border-radius:var(--radius-s)}.chord-picker-neck-btn:hover{background:var(--bg-hover)}.chord-picker-input-row{display:flex;align-items:center;gap:8px;padding:10px 12px;border-bottom:1px solid var(--border)}.chord-picker-input-row input{flex:1;min-width:0;border:none;background:var(--surface-2);border-radius:var(--radius-s);padding:7px 10px;font-size:15px;font-weight:600;font-family:var(--font-mono);color:var(--text)}.chord-picker-input-row input:focus{outline:none;box-shadow:0 0 0 2px var(--accent)}.chord-picker-delete{border:none;background:none;color:var(--danger);font-size:18px;width:30px;height:30px;flex-shrink:0}.chord-picker-list{overflow-y:auto;padding:4px}.chord-picker-group-label{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.03em;color:var(--text-tertiary);padding:8px 10px 4px}.chord-picker-item{display:block;width:100%;text-align:left;border:none;background:none;padding:8px 10px;font-size:15px;font-weight:600;font-family:var(--font-mono);color:var(--text);border-radius:var(--radius-s)}.chord-picker-item:active,.chord-picker-item.highlighted{background:var(--surface-2)}.chord-picker-empty{padding:14px 10px;color:var(--text-tertiary);font-size:13px;text-align:center}.chord-picker-list::-webkit-scrollbar{width:6px}.chord-picker-list::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.tooltip-anchor{position:relative;display:inline-flex;align-items:center}.tooltip-bubble{position:fixed;z-index:80;background:var(--text);color:var(--bg);font-size:12px;font-weight:600;padding:6px 10px;border-radius:var(--radius-s);box-shadow:var(--shadow-pop);pointer-events:none;white-space:nowrap}.settings-modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--overlay);display:flex;align-items:center;justify-content:center;padding:20px;z-index:85}.settings-modal{width:min(420px,calc(100vw - 40px));background:var(--surface);border-radius:var(--radius-l);border:1px solid var(--border);box-shadow:var(--shadow-pop);padding:22px 24px 26px;display:flex;flex-direction:column;gap:18px}.settings-modal-header{display:flex;align-items:center;justify-content:space-between;gap:12px}.settings-modal-title{font-size:18px;font-weight:700}.settings-close-btn{width:34px;height:34px;border-radius:50%;border:none;background:var(--surface-2);color:var(--text-secondary);display:flex;align-items:center;justify-content:center}.settings-close-btn:active{background:var(--surface-pressed);color:var(--text)}.settings-section{display:flex;flex-direction:column;gap:20px}.settings-field{display:flex;flex-direction:column;gap:8px}.settings-text-input{width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:var(--radius-s);background:var(--surface-2);color:var(--text);font-size:15px}.settings-text-input:focus-visible{outline:2px solid var(--accent);outline-offset:-1px}.settings-hint{font-size:12.5px;line-height:1.4;color:var(--text-secondary)}.settings-field label{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--text-secondary)}.switch-row{display:flex;align-items:center;gap:10px;cursor:pointer;-webkit-user-select:none;user-select:none;font-size:14px;color:var(--text)}.switch-row input[type=checkbox]{position:absolute;opacity:0;width:0;height:0}.switch{position:relative;width:42px;height:26px;border-radius:13px;background:var(--surface-pressed);border:1px solid var(--border);flex-shrink:0;transition:background .15s ease,border-color .15s ease}.switch:after{content:"";position:absolute;top:2px;left:2px;width:20px;height:20px;border-radius:50%;background:var(--surface);box-shadow:0 1px 2px #0003;transition:transform .15s ease}.switch-row input:checked~.switch{background:var(--accent);border-color:var(--accent)}.switch-row input:checked~.switch:after{transform:translate(16px)}.switch-row input:focus-visible~.switch{outline:2px solid 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40px))}.login-page{position:relative;min-height:100dvh;display:flex;align-items:center;justify-content:center;padding:24px;background:var(--bg);overflow:hidden}.login-backdrop{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;pointer-events:none}.login-fretboard{width:min(390px,80vw);height:auto;transform:translateY(-22%);opacity:.16}.login-fret-nut,.login-fret,.login-string,.login-marker{stroke:var(--text-secondary)}.login-marker{fill:none}.login-dot{fill:var(--accent)}.login-glow{position:absolute;width:90vmax;height:90vmax;border-radius:50%;background:radial-gradient(circle,color-mix(in srgb,#0A84FF 18%,transparent) 0%,color-mix(in srgb,#5E5CE6 10%,transparent) 42%,transparent 68%)}.login-mark{width:56px;height:56px;border-radius:14px;align-self:center;box-shadow:0 6px 18px #0a84ff47}.login-card{position:relative;z-index:1;width:100%;max-width:360px;display:flex;flex-direction:column;gap:14px;padding:28px 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ease}.login-submit:disabled{opacity:.45;cursor:default}.login-submit:active:not(:disabled){transform:scale(.98)}.login-note{margin:0;font-size:12px;color:var(--text-tertiary);text-align:center}.auth-offline-note{position:fixed;left:50%;bottom:12px;transform:translate(-50%);z-index:40;padding:7px 14px;border-radius:999px;background:var(--surface-2);border:1px solid var(--border);box-shadow:var(--shadow-card);font-size:12px;color:var(--text-secondary);pointer-events:none}.login-splash{min-height:100dvh;display:flex;align-items:center;justify-content:center;background:var(--bg);color:var(--text-tertiary);font-size:14px}.settings-account{display:flex;flex-direction:column;gap:2px;padding:10px 12px;border-radius:var(--radius-m);background:var(--surface-2);border:1px solid var(--border)}.settings-account-name{font-size:15px;font-weight:600;color:var(--text)}.settings-account-login{font-size:12px;color:var(--text-secondary)}.settings-signout-btn{margin-top:8px;align-self:flex-start;padding:8px 14px;border-radius:var(--radius-m);border:1px solid var(--border);background:var(--surface);color:var(--danger);font-family:var(--font-ui);font-size:14px;font-weight:500;cursor:pointer}.settings-signout-btn:active{background:var(--surface-pressed)}.install-prompt{position:fixed;left:50%;bottom:max(16px,env(safe-area-inset-bottom));transform:translate(-50%);z-index:60;width:min(420px,calc(100vw - 32px));min-width:200px;display:grid;grid-template-columns:auto 1fr;gap:12px 14px;padding:16px;border-radius:var(--radius-l);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-pop);animation:install-prompt-in .28s cubic-bezier(.22,1,.36,1) both}@keyframes install-prompt-in{0%{opacity:0;transform:translate(-50%,12px)}to{opacity:1;transform:translate(-50%)}}@media (prefers-reduced-motion: reduce){.install-prompt{animation:none}}.install-prompt .login-mark{width:44px;height:44px;border-radius:11px;align-self:start}.install-prompt-title{font-size:15px;font-weight:650;color:var(--text)}.install-prompt-body{margin:4px 0 0;font-size:13px;line-height:1.4;color:var(--text-secondary)}.install-prompt-actions{grid-column:1 / -1;display:flex;justify-content:flex-end;gap:8px}.install-prompt-later,.install-prompt-go{padding:9px 16px;border-radius:var(--radius-m);font-family:var(--font-ui);font-size:14px;font-weight:600;cursor:pointer}.install-prompt-later{border:1px solid var(--border);background:transparent;color:var(--text-secondary)}.install-prompt-later:active{background:var(--surface-pressed)}.install-prompt-go{border:none;background:var(--accent);color:#fff}.install-prompt-go:active{transform:scale(.97)}.song-tabs{position:fixed;bottom:0;left:50%;transform:translate(-50%);width:min(720px,100vw);z-index:30;display:flex;background:color-mix(in srgb,var(--bg) 88%,transparent);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-top:1px solid var(--border);padding-bottom:env(safe-area-inset-bottom)}.song-tab{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;padding:6px 4px 7px;border:none;background:none;color:var(--text-secondary);opacity:.75;font-size:11px;font-weight:500;letter-spacing:.01em;transition:color .12s ease,opacity .12s ease}.song-tab.is-active{color:var(--text);opacity:1}.song-tab:active{opacity:.6}.song-tab{-webkit-tap-highlight-color:transparent}.song-tab-icon{position:relative;display:flex;align-items:center;justify-content:center;height:18px}.song-tab-dot{position:absolute;top:-1px;right:-5px;width:5px;height:5px;border-radius:50%;background:var(--text-secondary);opacity:.65}.song-tab-label{line-height:1.2}.has-song-tabs .canvas{padding-bottom:200px}.has-song-tabs .fab{bottom:calc(82px + env(safe-area-inset-bottom))}.has-song-tabs .undo-banner{bottom:calc(78px + env(safe-area-inset-bottom))}.song-panel{flex:1;display:flex;flex-direction:column;min-height:0}.notes{flex:1;display:flex;flex-direction:column;min-height:0;padding:10px 16px calc(70px + env(safe-area-inset-bottom))}.notes-toolbar{display:flex;align-items:center;gap:2px;margin-bottom:8px}.notes-tool{min-width:32px;height:32px;display:inline-flex;align-items:center;justify-content:center;padding:0 8px;border:none;border-radius:var(--radius-s);background:none;color:var(--text-secondary);font-size:14px;line-height:1}.notes-tool.is-active{background:var(--surface-2);color:var(--text)}.notes-tool:active{background:var(--surface-pressed)}.notes-tool-sep{width:1px;height:18px;margin:0 6px;background:var(--border)}.notes-link-bar{display:flex;align-items:center;gap:8px;margin-bottom:8px}.notes-link-bar input{flex:1;min-width:0;padding:8px 10px;border:1px solid var(--border);border-radius:var(--radius-s);background:var(--surface);font-size:14px}.notes-link-bar input:focus{outline:none;border-color:var(--accent)}.notes-editor{flex:1;min-height:45vh;padding:12px 14px;border:1px solid var(--border);border-radius:var(--radius-m);background:var(--surface);color:var(--text);font-size:calc(15px * var(--song-scale, 1));line-height:1.55;overflow-wrap:anywhere;white-space:pre-wrap;-webkit-user-select:text;user-select:text}.notes-editor:focus{outline:none;border-color:color-mix(in srgb,var(--accent) 55%,var(--border))}.notes-editor[data-empty=true]:before{content:attr(data-placeholder);color:var(--text-secondary);opacity:.6;pointer-events:none}.notes-editor a{color:var(--accent);text-decoration:underline}@media print{.song-tabs,.song-panel{display:none!important}}