:root{--primary: #6366f1;--secondary: #ec4899;--accent: #8b5cf6;--background: #0f172a;--surface: rgba(255, 255, 255, .1);--glass-border: rgba(255, 255, 255, .2);--text-main: #f8fafc;--text-muted: #cbd5e1;--font-main: "Inter", system-ui, Avenir, Helvetica, Arial, sans-serif;--gradient-bg: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);--gradient-btn: linear-gradient(45deg, var(--primary), var(--secondary));--gradient-btn-hover: linear-gradient( 45deg, var(--secondary), var(--primary) )}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-main);background:var(--gradient-bg);color:var(--text-main);min-height:100vh;display:flex;justify-content:center;align-items:center;overflow:hidden}#root{width:100%;max-width:600px;padding:2rem;text-align:center}.glass-panel{background:var(--surface);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:24px;padding:2rem;box-shadow:0 8px 32px #0000005e}.glass-input{background:#0003;border:1px solid var(--glass-border);color:#fff;padding:1rem;border-radius:12px;width:100%;font-size:1.2rem;outline:none;transition:all .3s ease}.glass-input:focus{background:#0006;border-color:var(--primary);box-shadow:0 0 0 2px #6366f14d}h1{font-size:2.5rem;font-weight:800;background:linear-gradient(to right,#c084fc,#6366f1);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:2rem;letter-spacing:-.05em}h2{font-size:1.5rem;margin-bottom:1rem}.btn-primary{background:var(--gradient-btn);border:none;color:#fff;padding:1rem 2rem;font-size:1.2rem;font-weight:600;border-radius:12px;cursor:pointer;transition:transform .2s,box-shadow .2s;width:100%;text-transform:uppercase;letter-spacing:.05em}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 10px 20px -10px #ec489980;background:var(--gradient-btn-hover)}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn-primary:disabled{opacity:.5;cursor:not-allowed;filter:grayscale(1)}@keyframes pulse-ring{0%{transform:scale(.95);box-shadow:0 0 #ec4899b3}70%{transform:scale(1);box-shadow:0 0 0 10px #ec489900}to{transform:scale(.95);box-shadow:0 0 #ec489900}}.animate-pulse{animation:pulse-ring 2s infinite}.options-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;margin-top:2rem}.option-btn{background:#ffffff0d;border:2px solid var(--glass-border);color:#fff;font-size:2rem;font-weight:700;aspect-ratio:1;border-radius:20px;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;justify-content:center;align-items:center;position:relative;overflow:hidden}.option-btn:hover:not(:disabled){background:#ffffff1a;border-color:var(--primary);transform:scale(1.05)}.option-btn.selected{background:var(--primary);border-color:var(--accent);box-shadow:0 0 20px #6366f199;transform:scale(1.05)}.option-btn:disabled{opacity:.3;cursor:not-allowed}.timer-container{position:relative;margin:0 auto 2rem;width:120px;height:120px;display:flex;justify-content:center;align-items:center}.timer-value{font-size:3rem;font-weight:800;text-shadow:0 2px 10px rgba(0,0,0,.5)}.timer-circle{position:absolute;top:0;left:0;width:100%;height:100%;border-radius:50%;border:4px solid rgba(255,255,255,.1);border-top-color:var(--secondary);animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:400px){#root{padding:1rem}h1{font-size:2rem}.timer-container{width:100px;height:100px}.timer-value{font-size:2.5rem}}@keyframes blink-green{0%,to{background-color:#4ade8033;border-color:#4ade80;box-shadow:0 0 10px #4ade80}50%{background-color:#4ade80cc;border-color:#22c55e;box-shadow:0 0 20px #22c55e}}@keyframes blink-red{0%,to{background-color:#ef444433;border-color:#ef4444;box-shadow:0 0 10px #ef4444}50%{background-color:#ef4444cc;border-color:#b91c1c;box-shadow:0 0 20px #b91c1c}}.blink-correct{animation:blink-green .5s infinite;background-color:#4ade80!important;border-color:#22c55e!important;opacity:1!important}.blink-incorrect{animation:blink-red .5s infinite;background-color:#ef4444!important;border-color:#b91c1c!important;opacity:1!important}.leaderboard-container{display:flex;flex-direction:column;gap:1rem}.leaderboard-row{display:flex;align-items:center;gap:1rem;height:48px}.rank-display{width:40px;height:40px;display:flex;justify-content:center;align-items:center;font-weight:700;font-size:1.2rem;color:var(--text-muted)}.bar-container{flex:1;background:#ffffff0d;height:100%;border-radius:4px;overflow:hidden;position:relative}.score-bar{height:100%;display:flex;align-items:center;padding-left:1rem;white-space:nowrap;transition:width 1s ease-in-out;border-radius:0 4px 4px 0;min-width:fit-content}.player-name{color:#fff;font-weight:600;text-shadow:0 1px 2px rgba(0,0,0,.5);margin-right:.5rem}.score-display{width:80px;text-align:right;font-weight:700;font-size:1.1rem;color:var(--text-main)}