:root{--bg:#080812;--bg2:#0c0c1a;--bg3:#121222;--text:#fff;--text2:#9ca3af;--text3:#6b7280;--accent:#8b5cf6;--accent-glow:rgba(139,92,246,0.3);--purple:#8b5cf6;--blue:#3b82f6;--red:#ef4444;--amber:#f59e0b;--border:rgba(255,255,255,0.08);--glass:rgba(8,8,18,0.88);--glass-border:rgba(255,255,255,0.1)}
[data-theme="tron"]{--bg:#000a0a;--accent:#22d3ee;--accent-glow:rgba(34,211,238,0.3);--purple:#06b6d4;--blue:#22d3ee}
[data-theme="lava"]{--bg:#1a0505;--accent:#f97316;--accent-glow:rgba(249,115,22,0.3);--purple:#ef4444;--blue:#f97316}
[data-theme="ice"]{--bg:#050a14;--accent:#38bdf8;--accent-glow:rgba(56,189,248,0.3);--purple:#a5f3fc;--blue:#7dd3fc}
*{margin:0;padding:0;box-sizing:border-box}body{background:var(--bg);overflow:hidden;font-family:'Inter',sans-serif;color:var(--text);user-select:none}canvas{display:block;position:fixed;top:0;left:0;z-index:1}
.screen{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center}.screen.hide{display:none}
.menu-bg{position:absolute;inset:0;background:var(--bg)}.menu-bg::after{content:'';position:absolute;inset:0;background:radial-gradient(circle at 30% 40%,rgba(59,130,246,0.08) 0%,transparent 50%),radial-gradient(circle at 70% 60%,rgba(239,68,68,0.08) 0%,transparent 50%);animation:bgP 8s ease-in-out infinite alternate}@keyframes bgP{to{opacity:0.5}}
.menu-content{position:relative;z-index:2;text-align:center;max-width:480px;width:100%;padding:40px 20px}
.game-title{font-size:clamp(56px,10vw,88px);font-weight:900;background:linear-gradient(135deg,#3b82f6,#a78bfa,#ef4444);-webkit-background-clip:text;-webkit-text-fill-color:transparent;line-height:1;margin-bottom:8px;animation:tg 3s ease-in-out infinite alternate}@keyframes tg{to{filter:brightness(1.2)}}
.tagline{color:var(--text2);font-size:18px;font-weight:500;letter-spacing:4px;text-transform:uppercase;margin-bottom:48px}
.menu-buttons{display:flex;flex-direction:column;gap:12px;margin-bottom:40px}
.btn{border:none;padding:16px 32px;border-radius:14px;font-size:17px;font-weight:700;cursor:pointer;font-family:inherit;transition:all .3s;display:block;width:100%}
.btn.primary{background:var(--accent);color:#fff;box-shadow:0 0 30px var(--accent-glow)}.btn.primary:hover{transform:translateY(-2px);box-shadow:0 8px 40px var(--accent-glow);filter:brightness(1.1)}
.btn.secondary{background:var(--bg3);color:var(--text);border:1px solid var(--border)}.btn.secondary:hover{background:rgba(255,255,255,0.08);border-color:var(--accent)}
.btn.ghost{background:transparent;color:var(--text2);border:1px solid var(--border)}.btn.ghost:hover{color:var(--text);border-color:var(--text2)}
.menu-stats{display:flex;justify-content:center;gap:40px}.mstat{display:flex;flex-direction:column;align-items:center}.mstat-val{font-size:28px;font-weight:900;color:var(--accent)}.mstat-lbl{font-size:12px;color:var(--text3);text-transform:uppercase;letter-spacing:1px;font-weight:600}
.panel{background:var(--glass);backdrop-filter:blur(30px);-webkit-backdrop-filter:blur(30px);border:1px solid var(--glass-border);border-radius:24px;padding:40px;max-width:600px;width:90%;max-height:85vh;overflow-y:auto}.panel h2{font-size:28px;font-weight:800;margin-bottom:24px;text-align:center}
.mode-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:20px}
.mode-card{background:var(--bg3);border:2px solid var(--border);border-radius:16px;padding:20px;text-align:center;cursor:pointer;transition:all .3s}.mode-card:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:0 8px 30px var(--accent-glow)}.mode-card.selected{border-color:var(--accent);background:rgba(139,92,246,0.1)}
.mode-icon{font-size:36px;margin-bottom:8px}.mode-card h3{font-size:16px;font-weight:700;margin-bottom:4px}.mode-card p{font-size:12px;color:var(--text2);line-height:1.4}
.how-panel{max-width:650px}.how-steps{display:flex;flex-direction:column;gap:16px;margin-bottom:24px}
.how-step{display:flex;gap:16px;align-items:flex-start;padding:14px;background:var(--bg3);border-radius:12px}.how-num{width:32px;height:32px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;flex-shrink:0}
.how-step h4{font-size:15px;font-weight:700;margin-bottom:4px}.how-step p{font-size:13px;color:var(--text2);line-height:1.5}
.shortcut-grid{margin-bottom:20px}.shortcut-grid h3{font-size:16px;font-weight:700;margin-bottom:12px}.shortcut{font-size:13px;color:var(--text2);margin-bottom:6px}
kbd{background:var(--bg3);border:1px solid var(--border);padding:3px 8px;border-radius:6px;font-family:inherit;font-weight:700;font-size:12px;color:var(--accent);margin-right:4px}
.setting-row{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px}.setting-row label{font-weight:600;font-size:14px}
.setting-row select{background:var(--bg);color:var(--text);border:1px solid var(--border);padding:10px 14px;border-radius:10px;font-size:14px;font-family:inherit}.setting-row select option{background:var(--bg)}
input[type="range"]{-webkit-appearance:none;background:var(--bg3);height:6px;border-radius:3px;outline:none;flex:1;max-width:200px}input[type="range"]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:var(--accent);cursor:pointer}
#hud{position:fixed;top:0;left:0;right:0;z-index:20;padding:10px 20px;display:flex;justify-content:space-between;align-items:center;pointer-events:none;background:linear-gradient(180deg,rgba(0,0,0,0.7),transparent)}#hud.hide{display:none}
.hud-left,.hud-right{width:35%}.hud-center{width:30%;text-align:center}
.plbl{font-size:12px;font-weight:700;margin-bottom:4px}
.hpbar{width:100%;height:10px;background:rgba(255,255,255,0.1);border-radius:5px;overflow:hidden;margin-bottom:4px}
.hpfill{height:100%;border-radius:5px;transition:width 0.3s}.hpfill.p1{background:linear-gradient(90deg,#3b82f6,#60a5fa)}.hpfill.p2{background:linear-gradient(90deg,#ef4444,#f87171)}
.dash-bar{width:100%;height:4px;background:rgba(255,255,255,0.05);border-radius:2px;overflow:hidden}.dash-fill{height:100%;background:var(--amber);border-radius:2px;transition:width 0.2s}
.round-display{font-size:20px;font-weight:900;color:var(--text)}
.pup-alert{font-size:14px;font-weight:700;color:var(--amber);animation:pupFade 1.5s forwards}.pup-alert.hide{display:none}@keyframes pupFade{0%{opacity:1;transform:translateY(0)}100%{opacity:0;transform:translateY(-15px)}}
.round-panel{text-align:center;max-width:360px}
.round-scores{display:flex;justify-content:center;align-items:center;gap:20px;margin-top:16px}
.rs{display:flex;flex-direction:column;align-items:center;font-size:40px;font-weight:900}.rs span:first-child{font-size:14px;font-weight:700}.rs-vs{font-size:20px;color:var(--text3);font-weight:700}
.pause-panel{text-align:center;max-width:320px}.pause-panel .btn{margin-bottom:10px}
.over-panel{text-align:center;max-width:400px}
.wtxt{font-size:36px;font-weight:900;margin-bottom:16px}
.over-stats{display:flex;justify-content:center;gap:24px;margin:16px 0 24px}.ostat{display:flex;flex-direction:column;align-items:center;font-size:12px;color:var(--text3)}.ostat span{font-size:22px;font-weight:800;color:var(--text)}
.over-btns .btn{margin-bottom:8px}
.panel::-webkit-scrollbar{width:4px}.panel::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}
@media(max-width:500px){.mode-grid{grid-template-columns:1fr}.game-title{font-size:48px}.panel{padding:24px}}