:root{--bg: #10141c;--panel: #1a2130;--panel-2: #232c3f;--text: #e8edf6;--muted: #8b96ab;--accent: #ffd166;--good: #2ecc71;--bad: #ff6b6b;--radius: 14px}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;background:var(--bg);color:var(--text);font-family:Segoe UI,system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased}#app{max-width:560px;margin:0 auto;padding:12px;min-height:100%;display:flex;flex-direction:column;justify-content:center}.screen{display:flex;flex-direction:column;gap:14px}.hidden{display:none!important}.logo{font-size:2.4rem;letter-spacing:-.5px;text-align:center}.logo-accent{color:var(--accent)}.tagline{text-align:center;color:var(--muted);font-size:1.05rem;line-height:1.5}.rules{list-style:none;background:var(--panel);border:1px solid var(--panel-2);border-radius:var(--radius);padding:14px 18px;display:grid;gap:8px;color:var(--muted);font-size:.95rem}.rules b{color:var(--text)}.rules em{color:var(--accent);font-style:normal}.btn-primary{background:var(--accent);color:#1a1400;border:none;border-radius:999px;padding:14px 0;font-size:1.1rem;font-weight:700;cursor:pointer;transition:transform .08s ease,filter .15s ease}.btn-primary:hover{filter:brightness(1.08)}.btn-primary:active{transform:scale(.98)}.big-score{text-align:center;font-size:3.4rem;font-weight:800;color:var(--accent)}.best{text-align:center;color:var(--muted)}#verdict{font-size:.95rem}.hud{display:flex;justify-content:space-between;align-items:center}.hud-left{display:flex;align-items:baseline;gap:10px}.score{font-size:1.7rem;font-weight:800}.streak{color:var(--accent);font-weight:700;font-size:1rem}.lives{display:flex;gap:4px;font-size:1.15rem}.lives .lost{opacity:.25;filter:grayscale(1)}.prompt-row{display:flex;justify-content:center}.prompt{background:var(--panel);border:1px solid var(--panel-2);border-radius:999px;padding:10px 22px;font-size:1.15rem;text-align:center}.prompt .target-color{font-weight:800;text-transform:capitalize;padding:1px 8px;border-radius:6px}.prompt .target-shape{font-weight:800;text-transform:capitalize}.timer-wrap{height:6px;background:var(--panel-2);border-radius:999px;overflow:hidden}.timer{height:100%;width:100%;background:var(--good);border-radius:999px;transition:width .25s linear,background-color .3s ease}.stage-wrap{position:relative}#stage{width:100%;aspect-ratio:1 / .95;background:var(--panel);border:1px solid var(--panel-2);border-radius:var(--radius);display:block;touch-action:manipulation}.flash{position:absolute;inset:0;border-radius:var(--radius);pointer-events:none;mix-blend-mode:screen}.flash.pop{background:radial-gradient(circle,#ffffffe6,#fff0 70%);animation:popfade .35s ease-out}@keyframes popfade{0%{opacity:1}to{opacity:0}}.feedback{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);background:#0a0d13e0;border:2px solid var(--panel-2);border-radius:16px;padding:18px 26px;text-align:center;font-size:1.15rem;min-width:240px;z-index:5;box-shadow:0 10px 30px #00000080}.feedback .fb-title{font-size:1.4rem;font-weight:800;display:block}.feedback.good .fb-title{color:var(--good)}.feedback.bad .fb-title{color:var(--bad)}.feedback .fb-sub{color:var(--muted);font-size:.95rem;margin-top:4px}.pad{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.option-btn{background:var(--panel);border:1px solid var(--panel-2);color:var(--text);border-radius:14px;padding:20px 0;font-size:1.6rem;font-weight:800;cursor:pointer;transition:background .1s ease,transform .06s ease;user-select:none;touch-action:manipulation}.option-btn:hover{background:var(--panel-2)}.option-btn:active{transform:scale(.96)}.option-btn:disabled{opacity:.45;cursor:default}.option-btn.correct{background:var(--good);border-color:var(--good);color:#06230f}.option-btn.wrong{background:var(--bad);border-color:var(--bad);color:#2a0505}