@import"https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;700;900&family=JetBrains+Mono:wght@400;700&display=swap";:root{--bg-deep: #050508;--bg-base: #0a0a12;--bg-card: #111122;--bg-card-hover: #161630;--neon-cyan: #00f5ff;--neon-pink: #ff2d78;--neon-purple: #9d4edd;--neon-yellow: #ffe600;--neon-green: #39ff14;--text-primary: #f0f0ff;--text-secondary: #8888aa;--text-dim: #44445a;--lane-1: #00f5ff;--lane-2: #ff2d78;--lane-3: #9d4edd;--lane-4: #ffe600;--timing-perfect: #00f5ff;--timing-great: #39ff14;--timing-good: #ffe600;--timing-miss: #ff2d78;--radius-sm: 6px;--radius-md: 12px;--radius-lg: 20px;--shadow-neon-cyan: 0 0 20px rgba(0, 245, 255, .4);--shadow-neon-pink: 0 0 20px rgba(255, 45, 120, .4);--shadow-neon-purple: 0 0 20px rgba(157, 78, 221, .4);--transition-fast: .12s ease;--transition-mid: .25s cubic-bezier(.34, 1.56, .64, 1);--transition-slow: .4s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{width:100%;height:100%;overflow:hidden;background:var(--bg-deep);color:var(--text-primary);font-family:Outfit,system-ui,sans-serif;font-size:16px;-webkit-font-smoothing:antialiased}#app{position:relative;width:100%;height:100%}#game-canvas{position:absolute;inset:0;display:block}#ui-layer{position:absolute;inset:0;pointer-events:none}.screen{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;pointer-events:all;animation:screenIn .4s ease forwards}@keyframes screenIn{0%{opacity:0;transform:scale(.97) translateY(10px)}to{opacity:1;transform:scale(1) translateY(0)}}.screen.fade-out{animation:screenOut .3s ease forwards}@keyframes screenOut{0%{opacity:1;transform:scale(1)}to{opacity:0;transform:scale(1.02)}}.glass-card{background:#111122b3;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.07);border-radius:var(--radius-lg)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border:none;border-radius:var(--radius-md);font-family:Outfit,sans-serif;font-size:1rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;cursor:pointer;transition:var(--transition-mid);position:relative;overflow:hidden}.btn:after{content:"";position:absolute;inset:0;background:#fff0;transition:background .2s ease}.btn:hover:after{background:#ffffff14}.btn:active{transform:scale(.96)}.btn-primary{background:linear-gradient(135deg,var(--neon-cyan),var(--neon-purple));color:var(--bg-deep);box-shadow:0 0 30px #00f5ff4d}.btn-primary:hover{box-shadow:0 0 50px #00f5ff80;transform:translateY(-2px)}.btn-secondary{background:#ffffff0d;border:1px solid rgba(255,255,255,.12);color:var(--text-primary)}.btn-secondary:hover{border-color:var(--neon-cyan);color:var(--neon-cyan);box-shadow:var(--shadow-neon-cyan)}.btn-danger{background:#ff2d7826;border:1px solid rgba(255,45,120,.4);color:var(--neon-pink)}.btn-danger:hover{background:#ff2d7840;box-shadow:var(--shadow-neon-pink)}.text-neon-cyan{color:var(--neon-cyan)}.text-neon-pink{color:var(--neon-pink)}.text-neon-purple{color:var(--neon-purple)}.text-neon-yellow{color:var(--neon-yellow)}.text-secondary{color:var(--text-secondary)}.text-mono{font-family:JetBrains Mono,monospace}#loading-screen{background:var(--bg-deep);z-index:1000}.loading-logo{font-size:4rem;font-weight:900;letter-spacing:-.02em;background:linear-gradient(135deg,var(--neon-cyan),var(--neon-pink),var(--neon-purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:40px}.loading-bar-wrap{width:300px;height:4px;background:#ffffff14;border-radius:2px;overflow:hidden}.loading-bar-fill{height:100%;background:linear-gradient(90deg,var(--neon-cyan),var(--neon-purple));border-radius:2px;transition:width .3s ease;box-shadow:0 0 10px var(--neon-cyan)}.loading-sub{margin-top:16px;font-size:.8rem;letter-spacing:.2em;text-transform:uppercase;color:var(--text-secondary)}#menu-screen{background:radial-gradient(ellipse at 30% 50%,rgba(0,245,255,.05) 0%,transparent 60%),radial-gradient(ellipse at 70% 20%,rgba(157,78,221,.07) 0%,transparent 50%),radial-gradient(ellipse at 60% 80%,rgba(255,45,120,.05) 0%,transparent 50%),var(--bg-deep)}.menu-logo{font-size:clamp(3rem,8vw,6rem);font-weight:900;letter-spacing:-.03em;background:linear-gradient(135deg,var(--neon-cyan) 0%,var(--neon-purple) 50%,var(--neon-pink) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;text-align:center;line-height:1;filter:drop-shadow(0 0 40px rgba(0,245,255,.3))}.menu-tagline{font-size:.9rem;letter-spacing:.35em;text-transform:uppercase;color:var(--text-secondary);margin-top:12px;margin-bottom:60px;text-align:center}.menu-buttons{display:flex;flex-direction:column;gap:14px;width:280px}.menu-particles{position:absolute;inset:0;pointer-events:none;overflow:hidden}#song-select-screen{background:var(--bg-deep);padding:40px 20px;overflow:hidden}.song-select-header{text-align:center;margin-bottom:32px}.song-select-header h1{font-size:1.6rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--text-primary)}.song-select-header p{font-size:.8rem;color:var(--text-secondary);margin-top:6px;letter-spacing:.2em}.song-list{display:flex;flex-direction:row;align-items:center;gap:32px;width:100vw;max-width:none;overflow-x:auto;overflow-y:hidden;padding:40px calc(50vw - 120px);scroll-snap-type:x mandatory;scroll-behavior:smooth;scrollbar-width:none}.song-list::-webkit-scrollbar{display:none}.song-card{display:flex;flex-direction:column;align-items:flex-start;justify-content:flex-end;flex:0 0 240px;height:320px;padding:20px;cursor:pointer;border:1px solid rgba(255,255,255,.05);border-radius:var(--radius-md);background:var(--bg-card);transition:var(--transition-mid);position:relative;overflow:hidden;scroll-snap-align:center;transform:scale(.9);opacity:.6}.song-card:before{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(0,0,0,.95) 0%,rgba(0,0,0,.4) 60%,transparent 100%);z-index:1;pointer-events:none}.song-card-bg{position:absolute;inset:0;background-size:cover;background-position:center;z-index:0;transition:transform .4s ease}.song-card:hover .song-card-bg{transform:scale(1.05)}.song-card.selected{transform:scale(1.1);opacity:1;border-color:var(--accent-color, var(--neon-cyan));box-shadow:0 0 30px #000c,0 0 15px var(--accent-color);z-index:10}.song-card.selected{border-color:var(--accent-color, var(--neon-cyan));box-shadow:0 0 20px #00f5ff26}.song-card.selected:before{width:5px;box-shadow:0 0 10px var(--accent-color, var(--neon-cyan))}.song-card .song-icon,.song-card .song-info,.song-card .song-card-badges{position:relative;z-index:2;width:100%}.song-card .song-info{margin-top:auto}.song-title{font-size:1.25rem;font-weight:700;color:#fff;letter-spacing:.02em;margin-bottom:6px;line-height:1.2}.song-artist{font-size:.85rem;font-weight:400;color:var(--text-secondary);display:block}.song-bpm{font-family:JetBrains Mono,monospace;font-size:.75rem;color:var(--neon-yellow);margin-top:8px;font-weight:700}.song-difficulty-badge{display:inline-flex;align-items:center;justify-content:center;padding:4px 8px;border-radius:4px;font-family:JetBrains Mono,monospace;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;margin-top:12px}.diff-easy{background:#39ff1426;color:var(--neon-green)}.diff-normal{background:#00f5ff26;color:var(--neon-cyan)}.diff-hard{background:#ff2d7826;color:var(--neon-pink)}.difficulty-selector{display:flex;gap:10px;margin-top:24px}.diff-btn{padding:8px 20px;border-radius:20px;border:1px solid rgba(255,255,255,.1);background:transparent;color:var(--text-secondary);font-family:Outfit,sans-serif;font-size:.85rem;font-weight:600;cursor:pointer;transition:var(--transition-fast);letter-spacing:.05em}.diff-btn:hover{color:var(--text-primary);border-color:#fff3}.diff-btn.active-easy{background:#39ff1426;border-color:var(--neon-green);color:var(--neon-green)}.diff-btn.active-normal{background:#00f5ff26;border-color:var(--neon-cyan);color:var(--neon-cyan)}.diff-btn.active-hard{background:#ff2d7826;border-color:var(--neon-pink);color:var(--neon-pink)}.song-select-actions{display:flex;gap:12px;margin-top:28px}.hud-top{position:absolute;top:0;left:0;right:0;display:flex;align-items:center;justify-content:space-between;padding:16px 24px;background:linear-gradient(to bottom,rgba(5,5,8,.9),transparent);pointer-events:none;z-index:10}.hud-song-info{display:flex;flex-direction:column}.hud-song-title{font-size:.9rem;font-weight:600}.hud-song-artist{font-size:.7rem;color:var(--text-secondary)}.hud-score-block{text-align:center}.hud-score{font-family:JetBrains Mono,monospace;font-size:2rem;font-weight:700;color:var(--neon-cyan);text-shadow:var(--shadow-neon-cyan);letter-spacing:.05em}.hud-combo{text-align:right}.hud-combo-count{font-family:JetBrains Mono,monospace;font-size:2.5rem;font-weight:700;color:var(--neon-yellow);line-height:1}.hud-combo-label{font-size:.65rem;letter-spacing:.2em;text-transform:uppercase;color:var(--text-secondary)}.progress-bar-wrap{position:absolute;top:0;left:0;right:0;height:3px;background:#ffffff0d;z-index:20}.progress-bar-fill{height:100%;background:linear-gradient(90deg,var(--neon-purple),var(--neon-cyan));transition:width .1s linear;box-shadow:0 0 8px var(--neon-cyan)}.hud-accuracy{position:absolute;top:80px;right:24px;font-family:JetBrains Mono,monospace;font-size:.9rem;color:var(--text-secondary);text-align:right;pointer-events:none}.hit-feedback{position:absolute;left:50%;transform:translate(-50%);font-size:1.4rem;font-weight:900;letter-spacing:.15em;text-transform:uppercase;pointer-events:none;animation:feedbackPop .7s cubic-bezier(.34,1.56,.64,1) forwards;z-index:50}@keyframes feedbackPop{0%{opacity:0;transform:translate(-50%) scale(.5)}30%{opacity:1;transform:translate(-50%) scale(1.1)}60%{opacity:1;transform:translate(-50%) scale(1)}to{opacity:0;transform:translate(-50%) translateY(-30px) scale(.9)}}.feedback-perfect{color:var(--timing-perfect);text-shadow:0 0 20px var(--neon-cyan)}.feedback-great{color:var(--timing-great);text-shadow:0 0 20px var(--neon-green)}.feedback-good{color:var(--timing-good);text-shadow:0 0 20px var(--neon-yellow)}.feedback-miss{color:var(--timing-miss);text-shadow:0 0 20px var(--neon-pink)}#pause-overlay{position:absolute;inset:0;background:#050508d9;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;z-index:100;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);pointer-events:all}.pause-title{font-size:3rem;font-weight:900;letter-spacing:.15em;text-transform:uppercase;color:var(--neon-cyan);text-shadow:var(--shadow-neon-cyan);margin-bottom:24px}#results-screen{background:radial-gradient(ellipse at 50% 0%,rgba(0,245,255,.08) 0%,transparent 60%),var(--bg-deep)}.results-rank{font-size:8rem;font-weight:900;line-height:1;background:linear-gradient(135deg,var(--neon-cyan),var(--neon-purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;filter:drop-shadow(0 0 30px rgba(0,245,255,.4))}.results-score-main{font-family:JetBrains Mono,monospace;font-size:2.5rem;font-weight:700;color:var(--neon-cyan);letter-spacing:.08em;text-shadow:var(--shadow-neon-cyan)}.results-song-title{font-size:1.1rem;font-weight:600;color:var(--text-primary);margin-bottom:4px}.results-song-detail{font-size:.8rem;color:var(--text-secondary);letter-spacing:.1em}.results-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;width:100%;max-width:600px;margin:28px 0}.stat-box{background:var(--bg-card);border:1px solid rgba(255,255,255,.06);border-radius:var(--radius-md);padding:16px;text-align:center}.stat-value{font-family:JetBrains Mono,monospace;font-size:1.4rem;font-weight:700;display:block}.stat-label{font-size:.65rem;letter-spacing:.2em;text-transform:uppercase;color:var(--text-secondary);margin-top:4px;display:block}.stat-perfect{color:var(--timing-perfect)}.stat-great{color:var(--timing-great)}.stat-good{color:var(--timing-good)}.stat-miss{color:var(--timing-miss)}.results-actions{display:flex;gap:12px;margin-top:8px}.key-guide{position:absolute;bottom:14px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:8px;pointer-events:none;opacity:.55}.key-group{display:flex;gap:8px}.key-group-sep{width:20px;height:24px;border-left:1px dashed rgba(255,255,255,.15);margin:0 4px}.key-chip{display:flex;flex-direction:column;align-items:center;gap:4px}.key-badge{width:34px;height:34px;border-radius:7px;border:1.5px solid rgba(255,255,255,.18);display:flex;align-items:center;justify-content:center;font-family:JetBrains Mono,monospace;font-size:.8rem;font-weight:700;background:#ffffff0a}.key-lane-label{font-size:.58rem;color:var(--text-dim);letter-spacing:.08em}.bg-particle{position:absolute;border-radius:50%;pointer-events:none;animation:floatUp linear infinite}@keyframes floatUp{0%{transform:translateY(0) scale(1);opacity:.6}to{transform:translateY(-100vh) scale(0);opacity:0}}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--neon-purple);border-radius:4px}@media(max-width:768px),(orientation:portrait){.btn{padding:18px 32px;font-size:1.05rem;min-height:56px}.menu-logo{font-size:clamp(2.5rem,14vw,5rem)}.menu-tagline{margin-bottom:40px;font-size:.8rem;letter-spacing:.25em}.menu-buttons{width:min(90vw,360px);gap:16px}#song-select-screen{padding:24px 12px}.song-select-header{margin-bottom:20px}.song-select-header h1{font-size:1.3rem}.song-list{max-height:44vh;gap:10px;width:100%}.song-card{padding:18px 16px;gap:12px}.song-icon{width:44px;height:44px;font-size:1.3rem}.song-title{font-size:1rem}.song-artist{font-size:.75rem}.song-bpm{display:none}.difficulty-selector{margin-top:16px;gap:8px}.diff-btn{padding:12px 20px;font-size:.9rem;min-height:48px;flex:1;text-align:center}.song-select-actions{gap:10px;margin-top:20px;width:100%;max-width:440px}.song-select-actions .btn{flex:1}.hud-top{padding:10px 14px}.hud-score{font-size:1.3rem}.hud-combo-count{font-size:1.8rem}.hud-song-title{font-size:.75rem}.hud-song-artist{display:none}.hud-accuracy{top:60px;right:14px;font-size:.75rem}.hit-feedback{font-size:1.6rem}.key-guide{bottom:12px;gap:0;width:100%;justify-content:space-around;transform:none;left:0;opacity:.6}.key-chip{flex:1;align-items:center}.key-badge{width:44px;height:44px;font-size:1rem;border-radius:10px;border-width:2px}.key-lane-label{font-size:.65rem;margin-top:4px}.pause-title{font-size:2rem}#pause-overlay{gap:12px}.results-stats{grid-template-columns:repeat(2,1fr);gap:10px}.results-rank{font-size:5rem}.results-score-main{font-size:1.8rem}.results-actions{flex-wrap:wrap;justify-content:center;gap:10px}.results-actions .btn{flex:1;min-width:120px}}