:root{--bg:#08060f;--bg-card:rgba(16,12,30,0.9);--bg-surface:#120e20;--text:#e8e4f0;--text-muted:#8a80a0;--accent:#f43f5e;--accent2:#e11d48;--gradient:linear-gradient(135deg,#f43f5e,#f59e0b,#8b5cf6);--border:rgba(255,255,255,0.07);--radius:14px;--font:'Inter',sans-serif;--mono:'JetBrains Mono',monospace;--perfect:#10b981;--good:#f59e0b;--miss:#ef4444}
[data-theme="light"]{--bg:#faf5f5;--bg-card:rgba(255,255,255,0.92);--bg-surface:#fff;--text:#1a1a2e;--text-muted:#666;--border:rgba(0,0,0,0.08)}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh}
.container{max-width:1100px;margin:0 auto;padding:0 1.5rem}
.navbar{position:sticky;top:0;z-index:100;background:rgba(8,6,15,0.85);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);padding:0.75rem 0}
[data-theme="light"] .navbar{background:rgba(250,245,245,0.9)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem}
.brand{text-decoration:none;color:var(--text);font-weight:700;font-size:1.25rem;display:flex;align-items:center;gap:0.5rem}
.brand span{background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.nav-links{display:flex;gap:0.5rem;align-items:center}
.nav-links a{text-decoration:none;color:var(--text-muted);font-size:0.9rem;padding:0.4rem 0.75rem;border-radius:8px;transition:all 0.2s}
.nav-links a:hover{color:var(--text);background:rgba(244,63,94,0.15)}
.kofi-link{color:#ff5e5b!important;font-weight:600}
.theme-btn{background:none;border:1px solid var(--border);width:36px;height:36px;border-radius:50%;cursor:pointer;font-size:1.1rem;display:flex;align-items:center;justify-content:center;transition:all 0.2s}
.theme-btn:hover{border-color:var(--accent);transform:scale(1.1)}
.hero{text-align:center;padding:2rem 0 1.5rem}
.hero h1{font-size:clamp(1.75rem,4vw,2.75rem);font-weight:800;margin-bottom:0.5rem}
.gradient-text{background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-sub{color:var(--text-muted);font-size:1rem;max-width:500px;margin:0 auto}
.glass-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;margin-bottom:1.5rem;backdrop-filter:blur(10px)}
.card-title{font-size:1rem;margin-bottom:1rem}
.btn{padding:0.6rem 1.2rem;border:none;border-radius:8px;cursor:pointer;font-family:var(--font);font-weight:600;font-size:0.85rem;transition:all 0.2s}
.btn-primary{background:var(--gradient);color:#fff}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 4px 20px rgba(244,63,94,0.3)}
.btn-secondary{background:transparent;color:var(--text);border:1px solid var(--border)}
.btn-secondary:hover{border-color:var(--accent);color:var(--accent)}
.btn-lg{padding:0.8rem 2rem;font-size:1rem}
.btn-icon{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:var(--bg-surface);border:1px solid var(--border);color:var(--text);border-radius:8px;font-size:1.2rem}
.btn-icon:hover{border-color:var(--accent);color:var(--accent)}
.game-layout{display:grid;grid-template-columns:1fr 300px;gap:1.5rem}
.main-area{display:flex;flex-direction:column;align-items:center}
.beat-display{width:100%;margin-bottom:1rem}
.beat-display canvas{width:100%;height:300px;display:block;border-radius:10px;background:var(--bg-surface)}
.hit-zone{display:flex;justify-content:space-between;align-items:center;width:100%;margin-bottom:1rem}
.hit-feedback{font-size:1.5rem;font-weight:800;min-height:2rem;transition:all 0.2s}
.hit-feedback.perfect{color:var(--perfect);animation:pop 0.3s}
.hit-feedback.good{color:var(--good);animation:pop 0.3s}
.hit-feedback.miss{color:var(--miss);animation:shake 0.3s}
@keyframes pop{0%{transform:scale(1)}50%{transform:scale(1.3)}100%{transform:scale(1)}}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}
.accuracy-display{display:flex;gap:1rem;align-items:center}
.score{font-family:var(--mono);font-weight:800;font-size:2rem;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.combo{font-family:var(--mono);font-weight:700;font-size:1.2rem;color:var(--accent)}
.controls-row{display:flex;gap:0.5rem;margin-bottom:1rem}
.hint{font-size:0.8rem;color:var(--text-muted);text-align:center}
kbd{background:var(--bg-surface);border:1px solid var(--border);border-radius:4px;padding:2px 6px;font-family:var(--mono);font-size:0.75rem}
.control-group{margin-bottom:1rem}
.control-group label{display:block;font-size:0.75rem;color:var(--text-muted);text-transform:uppercase;margin-bottom:0.3rem}
.control-group select{width:100%;padding:0.5rem;background:var(--bg-surface);color:var(--text);border:1px solid var(--border);border-radius:8px;font-family:var(--font);outline:none}
.tempo-control{display:flex;align-items:center;gap:0.5rem;margin-bottom:0.5rem}
.tempo-value{font-family:var(--mono);font-weight:800;font-size:2rem;min-width:80px;text-align:center;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.slider{width:100%;-webkit-appearance:none;height:6px;border-radius:3px;background:var(--border);outline:none}
.slider::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:var(--accent);cursor:pointer;border:2px solid var(--bg)}
.stats-list{display:flex;flex-direction:column;gap:0.5rem}
.stat-row{display:flex;justify-content:space-between;padding:0.4rem 0;border-bottom:1px solid var(--border);font-size:0.9rem}
.stat-val{font-family:var(--mono);font-weight:700}
.stat-val.perfect{color:var(--perfect)}.stat-val.good{color:var(--good)}.stat-val.miss{color:var(--miss)}
.footer{margin-top:3rem;border-top:1px solid var(--border);padding:2rem 0}
.footer-inner{display:flex;flex-wrap:wrap;gap:2rem;justify-content:space-between}
.footer-brand span{font-weight:700;font-size:1.1rem}.footer-brand p{color:var(--text-muted);font-size:0.85rem;margin-top:0.3rem}
.footer-brand a{color:var(--accent);text-decoration:none}
.copyright{width:100%;text-align:center;color:var(--text-muted);font-size:0.8rem;margin-top:1rem;padding-top:1rem;border-top:1px solid var(--border)}
@media(max-width:768px){.game-layout{grid-template-columns:1fr}.nav-links{display:none}}