:root{--bg:#08060f;--bg-2:#120a20;--panel:#ffffff0a;--panel-line:#ffffff1a;--text:#f4f0ff;--muted:#a99fc4;--pink:#ff2fb9;--cyan:#22e0ff;--gold:#ffd45e;--perfect:#22e0ff;--great:#6bff9e;--good:#ffd45e;--miss:#ff5d7a;--radius:18px;--glow-pink:0 0 24px #ff2fb973;--glow-cyan:0 0 24px #22e0ff66}*{box-sizing:border-box}body{color:var(--text);background:radial-gradient(1200px 600px at 15% -10%, #ff2fb92e, transparent 60%), radial-gradient(1000px 700px at 100% 0%, #22e0ff29, transparent 55%), linear-gradient(180deg, var(--bg-2), var(--bg) 60%);-webkit-font-smoothing:antialiased;min-height:100vh;margin:0;font-family:Segoe UI,system-ui,-apple-system,Helvetica Neue,sans-serif}#app{max-width:1080px;margin:0 auto;padding:24px 20px 64px}.screen{animation:.35s both fade-in}@keyframes fade-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}.topbar{justify-content:space-between;align-items:center;gap:16px;margin-bottom:28px;display:flex}.brand{cursor:pointer;align-items:baseline;gap:10px;display:flex}.brand h1{letter-spacing:4px;background:linear-gradient(90deg, var(--pink), var(--cyan));color:#0000;text-shadow:var(--glow-pink);-webkit-background-clip:text;background-clip:text;margin:0;font-size:28px;font-weight:800}.brand .kr{color:var(--muted);letter-spacing:6px;font-size:18px}.tagline{color:var(--muted);margin:-14px 0 24px;font-size:15px}.btn{font:inherit;border:1px solid var(--panel-line);background:var(--panel);color:var(--text);cursor:pointer;border-radius:999px;padding:12px 20px;font-weight:700;transition:transform .12s,box-shadow .2s,border-color .2s}.btn:hover{border-color:var(--cyan);box-shadow:var(--glow-cyan);transform:translateY(-1px)}.btn:disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none}.btn.primary{background:linear-gradient(90deg, var(--pink), #c026ff);box-shadow:var(--glow-pink);border:none}.btn.primary:hover{box-shadow:0 0 32px #ff2fb9b3}.btn.ghost{background:0 0}.row{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.panel{background:var(--panel);border:1px solid var(--panel-line);border-radius:var(--radius);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);padding:20px}.section-title{text-transform:uppercase;letter-spacing:3px;color:var(--muted);margin:28px 0 12px;font-size:13px}.track-list{gap:12px;display:grid}.track-card{border-radius:var(--radius);border:1px solid var(--panel-line);background:var(--panel);cursor:pointer;justify-content:space-between;align-items:center;gap:16px;padding:18px 20px;transition:transform .12s,border-color .2s,box-shadow .2s;display:flex}.track-card:hover{border-color:var(--pink);box-shadow:var(--glow-pink);transform:translateY(-2px)}.track-card .meta{flex-direction:column;gap:4px;display:flex}.track-card .title{font-size:18px;font-weight:700}.track-card .sub{color:var(--muted);font-size:13px}.badge{border:1px solid var(--panel-line);color:var(--muted);border-radius:999px;align-items:center;gap:6px;padding:3px 10px;font-size:12px;display:inline-flex}.pb{text-align:right;flex-direction:column;gap:2px;display:flex}.pb .score{font-size:20px;font-weight:800}.grade{border-radius:10px;place-items:center;width:34px;height:34px;font-size:15px;font-weight:900;display:inline-grid}.grade-S{color:#08060f;background:linear-gradient(135deg, var(--gold), #fff1b8);box-shadow:0 0 20px #ffd45e99}.grade-A{color:#08060f;background:linear-gradient(135deg, var(--cyan), #b8f6ff)}.grade-B{color:#08060f;background:linear-gradient(135deg, var(--great), #d6ffe4)}.grade-C{color:#08060f;background:var(--good)}.grade-D{color:var(--text);background:#ff5d7a59}.hint{border-radius:var(--radius);border:1px solid var(--pink);background:linear-gradient(90deg,#ff2fb929,#22e0ff1a);justify-content:space-between;align-items:center;gap:14px;margin-bottom:20px;padding:16px 20px;display:flex}.empty{text-align:center;color:var(--muted);border:1px dashed var(--panel-line);border-radius:var(--radius);padding:32px 20px}.stage{grid-template-columns:1fr 1fr;gap:16px;display:grid;position:relative}@media (max-width:720px){.stage{grid-template-columns:1fr}}.beat-flash{z-index:5;pointer-events:none;border-radius:var(--radius);opacity:0;position:absolute;inset:0;box-shadow:inset 0 0 0 3px #ff2fb9e6,inset 0 0 44px #22e0ff8c}.pane{aspect-ratio:var(--pane-aspect,4 / 3);border-radius:var(--radius);border:1px solid var(--panel-line);background:#05040a;position:relative;overflow:hidden}.pane .label{z-index:3;letter-spacing:2px;text-transform:uppercase;color:var(--muted);font-size:12px;position:absolute;top:10px;left:12px}.pane video,.pane canvas{width:100%;height:100%;position:absolute;inset:0}.pane video{object-fit:var(--video-fit,cover)}.pane video.mirror{transform:scaleX(-1)}.hud{justify-content:space-between;align-items:center;gap:16px;margin:16px 0;display:flex}.hud .stat .k{letter-spacing:2px;text-transform:uppercase;color:var(--muted);font-size:11px}.hud .stat .v{font-size:26px;font-weight:800}.combo{color:var(--pink);text-shadow:var(--glow-pink)}.judgment-pop{z-index:4;letter-spacing:2px;pointer-events:none;font-size:44px;font-weight:900;animation:.6s ease-out both pop;position:absolute;top:42%;left:50%;transform:translate(-50%,-50%)}.j-PERFECT{color:var(--perfect);text-shadow:0 0 24px var(--perfect)}.j-GREAT{color:var(--great);text-shadow:0 0 20px var(--great)}.j-GOOD{color:var(--good);text-shadow:0 0 18px var(--good)}.j-MISS{color:var(--miss);text-shadow:0 0 18px var(--miss)}@keyframes pop{0%{opacity:0;transform:translate(-50%,-30%)scale(.6)}25%{opacity:1;transform:translate(-50%,-55%)scale(1.15)}to{opacity:0;transform:translate(-50%,-70%)scale(1)}}.countdown{z-index:6;color:var(--cyan);text-shadow:var(--glow-cyan);background:#05040a8c;place-items:center;font-size:120px;font-weight:900;animation:1s ease-in-out count;display:grid;position:absolute;inset:0}@keyframes count{0%{opacity:0;transform:scale(1.6)}to{opacity:1;transform:scale(1)}}.overlay-msg{text-align:center;z-index:6;background:#05040ab3;place-items:center;padding:24px;display:grid;position:absolute;inset:0}.overlay-msg .inner{max-width:360px}.result-hero{text-align:center;padding:30px 20px}.result-hero .big-grade{font-size:96px;font-weight:900;line-height:1}.result-hero .big-score{margin-top:8px;font-size:44px;font-weight:800}.stat-grid{grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px;margin:20px 0;display:grid}.stat-tile{background:var(--panel);border:1px solid var(--panel-line);text-align:center;border-radius:14px;padding:14px}.stat-tile .k{letter-spacing:2px;text-transform:uppercase;color:var(--muted);font-size:11px}.stat-tile .v{font-size:24px;font-weight:800}.verdict{text-align:center;border-radius:12px;margin:12px 0;padding:12px;font-size:20px;font-weight:800}.verdict.win{color:var(--great);background:#6bff9e1f}.verdict.lose{color:var(--miss);background:#ff5d7a1f}.confetti{pointer-events:none;z-index:20;position:fixed;inset:0;overflow:hidden}.confetti i{opacity:.9;width:9px;height:14px;animation:linear forwards fall;position:absolute;top:-12px}@keyframes fall{to{opacity:.2;transform:translateY(105vh)rotate(720deg)}}input[type=text],input[type=password],input[type=number]{font:inherit;color:var(--text);border:1px solid var(--panel-line);background:#0000004d;border-radius:12px;width:100%;padding:12px 14px}input[type=text]:focus,input[type=password]:focus,input[type=number]:focus{border-color:var(--cyan);box-shadow:var(--glow-cyan);outline:none}.name-row{gap:8px;margin-bottom:8px;display:flex}.progress{border:1px solid var(--panel-line);background:#0006;border-radius:999px;height:12px;overflow:hidden}.progress>span{background:linear-gradient(90deg, var(--pink), var(--cyan));width:0;height:100%;transition:width .1s linear;display:block}.board{gap:10px;display:grid}.board .rowline{border:1px solid var(--panel-line);background:var(--panel);border-radius:12px;justify-content:space-between;padding:12px 16px;display:flex}.board .rowline.active{border-color:var(--cyan);box-shadow:var(--glow-cyan)}.podium{justify-content:center;align-items:flex-end;gap:14px;margin:30px 0;display:flex}.podium .col{text-align:center;width:120px}.podium .bar{background:linear-gradient(180deg, var(--pink), #22e0ff4d);border-radius:12px 12px 0 0;place-items:end center;padding-bottom:8px;font-size:26px;font-weight:900;display:grid}.share-card-wrap{text-align:center}.share-card-wrap canvas{border-radius:var(--radius);border:1px solid var(--panel-line);max-width:100%;margin:12px 0}.modal{z-index:30;background:#040308bf;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.modal .box{width:100%;max-width:460px}.spacer{flex:1}