:root{--bg-dark:#020617;--bg-card:#0f172a;--primary:#00f3ff;--primary-rgb:0, 243, 255;--secondary:#d946ef;--secondary-rgb:217, 70, 239;--accent:#10b981;--accent-rgb:16, 185, 129;--text:#f1f5f9;--text-muted:#64748b;--danger:#f43f5e;--border:#ffffff0d;--glass:#0f172a99;--glass-heavy:#020617cc;--primary-glow:#00f3ff4d;--secondary-glow:#d946ef4d}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;margin:0;padding:0}body{background-color:var(--bg-dark);color:var(--text);background-image:radial-gradient(circle at 20% 20%,#d946ef14 0%,#0000 40%),radial-gradient(circle at 80% 80%,#00f3ff14 0%,#0000 40%),radial-gradient(circle,#10b98108 0%,#0000 60%);background-attachment:fixed;min-height:100vh;font-family:Inter,system-ui,-apple-system,sans-serif;overflow-x:hidden}#app{flex-direction:column;min-height:100vh;display:flex}.glass{background:var(--glass);-webkit-backdrop-filter:blur(10px);border:1px solid var(--border);border-radius:1rem}.btn{cursor:pointer;text-transform:uppercase;letter-spacing:.05em;border:none;border-radius:.5rem;justify-content:center;align-items:center;gap:.5rem;padding:.75rem 1.5rem;font-weight:600;transition:all .2s;display:flex}.btn-primary{background-color:var(--primary);color:#064e3b;box-shadow:0 0 15px #10b9814d}.btn-primary:hover{filter:brightness(1.1);transform:translateY(-2px);box-shadow:0 0 25px #10b98180}.btn-secondary{background-color:var(--secondary);color:#2e1065;box-shadow:0 0 15px #8b5cf64d}.btn-secondary:hover{filter:brightness(1.1);transform:translateY(-2px);box-shadow:0 0 25px #8b5cf680}.btn-outline{border:1px solid var(--border);color:var(--text);background:0 0}.btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:none;filter:grayscale()}.input-group{margin-bottom:1.5rem}.input-label{color:var(--text-muted);margin-bottom:.5rem;font-size:.875rem;display:block}input{border:1px solid var(--border);width:100%;color:var(--text);background:#0f172a80;border-radius:.5rem;outline:none;padding:.75rem 1rem;transition:border-color .2s}input:focus{border-color:var(--primary);box-shadow:0 0 0 2px #10b98133}.auth-container{width:90%;max-width:400px;margin:auto;padding:2.5rem}.lobby-container{width:95%;max-width:800px;margin:2rem auto}.game-container{flex-direction:column;flex:1;display:flex;position:relative;overflow:hidden}@keyframes glow{0%{box-shadow:0 0 5px var(--primary)}to{box-shadow:0 0 20px var(--primary)}}.neon-text{text-shadow:0 0 10px}.top-nav{justify-content:space-between;align-items:center;margin:1rem;padding:1rem 2rem;display:flex}.user-info{color:var(--text-muted);font-weight:500}.btn-sm{padding:.4rem .8rem;font-size:.75rem}.loading{height:80vh;color:var(--primary);text-transform:uppercase;letter-spacing:.2em;justify-content:center;align-items:center;font-size:1.5rem;display:flex}