*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0a0e1a;--bg-surface:#111728;--bg-highlight:rgba(255,215,0,0.06);
  --gold:#ffd700;--gold-dim:rgba(255,215,0,0.35);--blue:#0057b7;
  --text:#c8cdd8;--text-muted:rgba(200,205,216,0.3);--text-past:rgba(200,205,216,0.45);
  --amber:#f59e0b;--red:#ef4444;--green:#22c55e;--font-size:22px;
}
body.theme-light{
  --bg:#e8e9ed;--bg-surface:#f5f5f7;--bg-highlight:rgba(0,87,183,0.08);
  --gold:#996b00;--gold-dim:rgba(153,107,0,0.25);--blue:#0057b7;
  --text:#2a2a3e;--text-muted:rgba(42,42,62,0.4);--text-past:rgba(42,42,62,0.55);
  --amber:#b45309;--red:#b91c1c;--green:#15803d;
}
@media(prefers-color-scheme:light){body.theme-auto{
  --bg:#e8e9ed;--bg-surface:#f5f5f7;--bg-highlight:rgba(0,87,183,0.08);
  --gold:#996b00;--gold-dim:rgba(153,107,0,0.25);--blue:#0057b7;
  --text:#2a2a3e;--text-muted:rgba(42,42,62,0.4);--text-past:rgba(42,42,62,0.55);
  --amber:#b45309;--red:#b91c1c;--green:#15803d;
}}
html,body{height:100%;width:100%;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;font-size:var(--font-size);overflow:hidden;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}
body{display:flex;flex-direction:column;height:100vh;height:100dvh;animation:fadeIn 0.3s ease-in}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}

.header{flex-shrink:0;padding:10px 16px 8px;background:linear-gradient(180deg,rgba(10,14,26,0.98),rgba(10,14,26,0.85));border-bottom:1px solid rgba(255,215,0,0.12);z-index:10;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:16px}
.header-left{flex:1;min-width:0}
.song-title{font-family:Georgia,"Times New Roman",serif;font-size:1em;color:var(--gold);letter-spacing:0.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.song-artists{font-size:0.6em;color:var(--text-muted);margin-top:1px;letter-spacing:0.04em;text-transform:uppercase;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.track-counter{font-size:0.55em;color:var(--gold-dim);white-space:nowrap;flex-shrink:0}
.lang-toggle{background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.12);color:var(--text);font-size:0.55em;padding:4px 10px;border-radius:12px;cursor:pointer;font-family:inherit;white-space:nowrap;flex-shrink:0}

.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 24px;text-align:center}
.empty-state .icon{font-size:3em;margin-bottom:16px;opacity:0.4}
.empty-state h2{font-family:Georgia,serif;color:var(--gold);font-size:1.2em;margin-bottom:8px}
.empty-state p{font-size:0.75em;color:var(--text-muted);max-width:380px;line-height:1.5;margin-bottom:20px}
.btn-load-songs{background:linear-gradient(135deg,var(--blue),#1a3a6e);border:2px solid var(--gold-dim);color:#fff;font-size:0.8em;padding:12px 28px;border-radius:28px;cursor:pointer;font-family:inherit}

.lyrics-viewport{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;scroll-behavior:smooth;padding:25vh 20px 40vh;position:relative;display:none;font-size:var(--font-size)}
.lyrics-viewport.show{display:block}
.lyrics-viewport::-webkit-scrollbar{width:4px}
.lyrics-viewport::-webkit-scrollbar-thumb{background:var(--gold-dim);border-radius:2px}

.lyric-line{padding:10px 14px;margin:2px 0;border-left:3px solid transparent;border-radius:4px;cursor:pointer;transition:all 0.35s ease;line-height:1.55;color:var(--text-muted);-webkit-user-select:none;user-select:none;position:relative}
.lyric-line:active{background:rgba(255,215,0,0.04)}
.lyric-line.past{color:var(--text-past);border-left-color:rgba(255,215,0,0.08)}
.lyric-line.active{color:var(--gold);font-weight:600;background:var(--bg-highlight);border-left:3px solid var(--gold);padding-left:9px}
.lyric-line.upcoming{color:var(--text-muted)}
.lyric-line.bookmarked::after{content:"⭐";position:absolute;right:8px;top:50%;transform:translateY(-50%);font-size:0.6em;opacity:0.6}
.lyric-line.in-ab-range{border-left-color:rgba(255,215,0,0.3)}

.flow-arrow{display:inline-block;color:var(--green);margin-left:8px;font-size:0.9em;opacity:0.8;vertical-align:middle}
.pause-short{display:inline-block;margin-left:8px;vertical-align:middle;font-size:0.85em}
.pause-long{display:inline-block;margin-left:8px;vertical-align:middle;font-size:0.85em}
.held{font-style:italic;letter-spacing:0.18em;background:linear-gradient(90deg,var(--gold),rgba(255,215,0,0.3));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stress{font-weight:700;font-size:1.15em;color:var(--gold);display:inline}
.section-break{text-align:center;padding:18px 0;opacity:0.25}
.section-break hr{border:none;border-top:1px solid var(--gold);width:60%;margin:0 auto}

body.debug-on .lyric-ts{display:inline}
.lyric-ts{display:none;font-size:0.5em;color:rgba(255,215,0,0.3);font-family:monospace;margin-right:6px;vertical-align:middle}

.lyric-tr{display:none;color:rgba(107,163,214,0.5);font-size:0.75em;font-style:italic;line-height:1.4}
.lyric-line.active .lyric-tr{color:rgba(255,255,255,0.45)}
body.tr-right .lyric-line{display:flex;align-items:baseline;gap:16px}
body.tr-right .lyric-main{flex:1}
body.tr-right .lyric-tr{display:block;flex:0 0 40%;text-align:right;min-width:0}
body.tr-below .lyric-tr{display:block;margin-top:3px;padding-left:2px}

.lyric-rom{display:none;color:rgba(123,198,126,0.5);font-size:0.7em;line-height:1.3;letter-spacing:0.02em}
body.rom-below .lyric-rom{display:block;margin-top:2px;padding-left:2px}
body.rom-only .lyric-main{display:none}
body.rom-only .lyric-rom{display:block;font-size:1em;color:var(--text-muted)}
body.rom-only .lyric-line.active .lyric-rom{color:#fff}

body.practice-reveal .lyric-main{filter:blur(8px);transition:filter 0.3s}
body.practice-reveal .lyric-line.revealed .lyric-main{filter:none}
body.practice-progressive .lyric-main{filter:blur(8px)}
body.practice-progressive .lyric-line.past .lyric-main{filter:none}
body.practice-progressive .lyric-line.active .lyric-main{filter:blur(8px)}

.word-active{color:#fff !important;text-shadow:0 0 12px rgba(255,215,0,0.3)}

.countdown-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(10,14,26,0.85);z-index:80;align-items:center;justify-content:center;flex-direction:column}
.countdown-overlay.show{display:flex}
.countdown-number{font-family:Georgia,serif;font-size:4em;color:var(--gold)}
.countdown-label{font-size:0.7em;color:var(--text-muted);margin-top:8px}

.loading-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(10,14,26,0.92);z-index:85;align-items:center;justify-content:center;flex-direction:column;font-size:16px}
.loading-overlay.show{display:flex}
.loading-phase{color:var(--gold);font-family:Georgia,serif;font-size:1.2em;margin-bottom:16px;text-align:center}
.loading-bar-wrap{width:200px;height:6px;background:rgba(255,255,255,0.08);border-radius:3px;overflow:hidden;margin-bottom:10px}
.loading-bar{height:100%;background:linear-gradient(90deg,var(--blue),var(--gold));border-radius:3px;width:0%;transition:width 0.2s}
.loading-detail{color:var(--text-muted);font-size:0.75em;text-align:center}
.loading-spinner{width:24px;height:24px;border:3px solid rgba(255,215,0,0.2);border-top-color:var(--gold);border-radius:50%;animation:spin 0.8s linear infinite;margin-bottom:12px}
@keyframes spin{to{transform:rotate(360deg)}}

.controls{flex-shrink:0;background:var(--bg-surface);border-top:1px solid rgba(255,215,0,0.1);padding:8px 16px 20px;z-index:10;display:none;font-size:16px;max-height:55vh;overflow-y:auto;-webkit-overflow-scrolling:touch}
.controls.show{display:block}
.transport-bar{display:none;flex-shrink:0;background:var(--bg-surface);border-top:1px solid rgba(255,215,0,0.1);padding:8px 16px 12px;z-index:10;font-size:16px}
.transport-bar.show{display:block}

.progress-wrap{width:100%;height:48px;display:flex;align-items:center;cursor:pointer;padding:8px 0;touch-action:none;position:relative}
.progress-track{width:100%;height:32px;background:rgba(255,255,255,0.04);border-radius:4px;position:relative;overflow:hidden}
.waveform-canvas{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none}
.progress-fill{position:absolute;top:0;left:0;height:100%;width:0%;overflow:hidden}
.progress-fill .waveform-canvas{position:absolute;top:0;left:0;height:100%}
.progress-thumb{position:absolute;right:0;top:0;width:3px;height:100%;background:var(--gold);box-shadow:0 0 8px rgba(255,215,0,0.6)}
.controls-toggle{display:none;width:100%;background:var(--bg-surface);border:none;border-top:1px solid rgba(255,215,0,0.1);color:var(--text-muted);font-size:0.7em;padding:4px 0;cursor:pointer;text-align:center;-webkit-user-select:none;user-select:none;z-index:10;flex-shrink:0}
.controls-toggle.show{display:block}
.ab-region{position:absolute;top:0;height:100%;background:rgba(255,215,0,0.12);pointer-events:none;z-index:1}
.ab-marker{position:absolute;top:0;width:2px;height:100%;background:var(--gold);pointer-events:none;z-index:2}
.time-row{display:flex;justify-content:space-between;font-size:0.55em;color:var(--text-muted);margin-top:1px;font-variant-numeric:tabular-nums;cursor:pointer;-webkit-user-select:none;user-select:none}

.btn-row{display:flex;align-items:center;justify-content:center;gap:6px;margin-top:6px;flex-wrap:wrap}
.btn{background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.1);color:var(--text);font-size:0.62em;padding:5px 10px;border-radius:20px;cursor:pointer;transition:all 0.2s;white-space:nowrap;-webkit-user-select:none;user-select:none;font-family:inherit}
.btn:active{background:rgba(255,215,0,0.15);border-color:var(--gold-dim)}
.btn.active{background:rgba(255,215,0,0.12);border-color:var(--gold);color:var(--gold)}
.btn-play{width:46px;height:46px;border-radius:50%;display:flex;align-items:center;justify-content:center;padding:0;font-size:1.05em;background:linear-gradient(135deg,var(--blue),#1a3a6e);border:2px solid var(--gold-dim)}
.btn-sm{padding:5px 8px;font-size:0.58em}

.fader-row{display:flex;align-items:center;gap:6px;margin-top:6px;padding:6px 12px;background:rgba(255,255,255,0.02);border:1px solid rgba(255,255,255,0.05);border-radius:10px}
.fader-label{font-size:0.5em;color:var(--text-muted);white-space:nowrap;min-width:32px;text-align:center;line-height:1.2}
.fader-label .fader-icon{font-size:1.6em;display:block;margin-bottom:1px}
.fader-track-wrap{flex:1;position:relative;height:32px;display:flex;align-items:center}
.fader-input{width:100%;-webkit-appearance:none;appearance:none;height:8px;background:linear-gradient(90deg,var(--blue) 0%,rgba(0,87,183,0.3) 40%,rgba(255,215,0,0.3) 60%,var(--gold) 100%);border-radius:4px;outline:none}
.fader-input::-webkit-slider-thumb{-webkit-appearance:none;width:24px;height:24px;background:radial-gradient(circle at 40% 35%,#fff,var(--gold));border-radius:50%;cursor:pointer;box-shadow:0 0 10px rgba(255,215,0,0.4)}
.fader-pct{position:absolute;top:-2px;left:50%;transform:translateX(-50%);font-size:0.5em;color:var(--gold);pointer-events:none;opacity:0;transition:opacity 0.3s}
.fader-row:hover .fader-pct,.fader-row:active .fader-pct{opacity:1}

.settings-row{display:flex;align-items:center;gap:8px;margin-top:6px;flex-wrap:wrap}
.slider-group{display:flex;align-items:center;gap:6px;font-size:0.55em;color:var(--text-muted);flex:1;min-width:100px}
.slider-group label{white-space:nowrap;min-width:40px;cursor:pointer;-webkit-user-select:none;user-select:none}
.slider-group input[type=range]{flex:1;-webkit-appearance:none;appearance:none;height:4px;background:rgba(255,255,255,0.1);border-radius:2px;outline:none}
.slider-group input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:28px;height:28px;background:var(--gold);border-radius:50%;cursor:pointer;box-shadow:0 0 6px rgba(255,215,0,0.3)}
.slider-group input[type=range]{height:28px}
.fader-input::-webkit-slider-thumb{width:32px !important;height:32px !important}
.slider-group .val{min-width:28px;text-align:right;color:var(--gold);font-variant-numeric:tabular-nums}
.tool-row{display:flex;align-items:center;justify-content:center;gap:5px;margin-top:5px;flex-wrap:wrap}

.edit-popover{display:none;position:fixed;left:50%;transform:translateX(-50%);bottom:180px;background:var(--bg-surface);border:1px solid rgba(255,215,0,0.25);border-radius:12px;padding:14px 16px;z-index:90;width:calc(100% - 32px);max-width:420px;box-shadow:0 8px 32px rgba(0,0,0,0.6);font-size:16px}
.edit-popover.show{display:block}
.edit-popover .ep-row{display:flex;align-items:center;gap:8px;margin-bottom:10px}
.edit-popover input[type=text]{flex:1;background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.12);color:var(--text);font-size:0.75em;padding:8px 10px;border-radius:8px;font-family:inherit;outline:none}
.ep-time{font-family:monospace;font-size:0.7em;color:var(--gold);min-width:52px;text-align:center}
.ep-nudge{background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.12);color:var(--text);font-size:0.7em;padding:5px 10px;border-radius:6px;cursor:pointer;font-family:inherit}
.ep-actions{display:flex;gap:6px;justify-content:flex-end;flex-wrap:wrap}
.ep-btn{background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.1);color:var(--text);font-size:0.62em;padding:5px 12px;border-radius:16px;cursor:pointer;font-family:inherit}
.ep-btn-save{border-color:var(--gold-dim);color:var(--gold)}

.overlay{display:none;position:fixed;inset:0;background:rgba(10,14,26,0.92);z-index:100;padding:40px 24px;overflow-y:auto;-webkit-overflow-scrolling:touch;font-size:16px}
.overlay.show{display:block}
.overlay h3{font-family:Georgia,serif;color:var(--gold);font-size:1.1em;margin-bottom:12px;margin-top:16px}
.overlay h3:first-child{margin-top:0}
.overlay-close{position:fixed;top:12px;right:16px;color:var(--gold);font-size:1.5em;cursor:pointer;z-index:101;background:none;border:none;padding:8px}
.legend-item{display:flex;align-items:center;gap:12px;padding:8px 0;border-bottom:1px solid rgba(255,255,255,0.05);font-size:0.8em}
.legend-item .icon{flex-shrink:0;width:50px;text-align:center}

.queue-list{padding:0 0 20px}
.queue-item{display:flex;align-items:center;gap:10px;padding:10px 14px;border-bottom:1px solid rgba(255,255,255,0.05);font-size:0.8em;cursor:pointer}
.queue-item.now-playing{background:rgba(255,215,0,0.06);border-left:3px solid var(--gold)}
.queue-item .q-num{color:var(--text-muted);font-size:0.85em;min-width:20px}
.queue-item .q-info{flex:1;min-width:0}
.queue-item .q-title{color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block}
.queue-item .q-tags{display:flex;gap:4px;margin-top:2px}
.q-tag{font-size:0.7em;padding:1px 6px;border-radius:8px;display:inline-block}
.q-tag-lrc{background:rgba(34,197,94,0.15);color:var(--green)}
.q-tag-inst{background:rgba(0,87,183,0.2);color:#5ba3e6}
.q-tag-none{background:rgba(255,255,255,0.05);color:var(--text-muted)}
.queue-item .q-remove{color:var(--red);opacity:0.5;font-size:1.1em;padding:4px 8px;cursor:pointer;flex-shrink:0}
.queue-add-btn{display:block;margin:12px auto;background:rgba(255,255,255,0.04);border:1px dashed rgba(255,255,255,0.15);color:var(--text-muted);font-size:0.75em;padding:10px 20px;border-radius:8px;cursor:pointer;font-family:inherit}


.stats-bar{font-size:0.5em;color:var(--text-muted);text-align:center;margin-top:4px;font-variant-numeric:tabular-nums}

.toast{position:fixed;bottom:100px;left:50%;transform:translateX(-50%);background:var(--bg-surface);border:1px solid rgba(255,215,0,0.2);color:var(--text);font-size:0.7em;padding:8px 20px;border-radius:20px;z-index:200;opacity:0;transition:opacity 0.3s;pointer-events:none}
.toast.show{opacity:1}

.url-import{display:none;position:fixed;left:50%;transform:translateX(-50%);top:20%;background:var(--bg-surface);border:1px solid rgba(255,215,0,0.25);border-radius:12px;padding:16px;z-index:90;width:calc(100% - 32px);max-width:400px;box-shadow:0 8px 32px rgba(0,0,0,0.6);font-size:16px}
.url-import.show{display:block}
.url-import input{width:100%;background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.12);color:var(--text);font-size:0.8em;padding:10px;border-radius:8px;font-family:inherit;outline:none;margin:8px 0}
.url-import .ui-btns{display:flex;gap:8px;justify-content:flex-end}

@media(min-width:600px){
  .header{padding:12px 24px 10px}
  .lyrics-viewport{padding:20vh 40px 35vh}
  .controls{padding:10px 24px 20px;max-height:none}
  .btn-row{gap:10px}
  .settings-row{gap:12px}
  .fader-row{max-width:600px;margin-left:auto;margin-right:auto}
  .empty-state{padding:60px 40px}
  .empty-state h2{font-size:1.5em}
}
@media(min-width:1024px){
  .lyrics-viewport{padding:18vh 60px 30vh}
  .controls{border-radius:12px 12px 0 0}
  .settings-row{max-width:700px;margin-left:auto;margin-right:auto}
  .tool-row{max-width:700px;margin-left:auto;margin-right:auto}
  .fader-row{max-width:700px}
}
@supports(padding-bottom:env(safe-area-inset-bottom)){
  .controls{padding-bottom:calc(24px + env(safe-area-inset-bottom))}
  .transport-bar{padding-bottom:calc(12px + env(safe-area-inset-bottom))}
  .controls-toggle{padding-bottom:calc(4px + env(safe-area-inset-bottom))}
}

.demo-nav{flex-shrink:0;display:flex;justify-content:space-between;align-items:center;padding:6px 16px;background:rgba(10,14,26,0.95);border-bottom:1px solid rgba(255,215,0,0.08);font-size:12px;z-index:11}
.demo-nav a{color:var(--gold-dim);text-decoration:none;transition:color 0.2s}
.demo-nav a:hover{color:var(--gold)}
.demo-nav-left{display:flex;align-items:center;gap:4px}
.demo-nav-right{display:flex;align-items:center;gap:12px}
.demo-nav-right a{font-size:11px;opacity:0.7}
.demo-nav-right a:hover{opacity:1}