:root{--primary-color:#6366f1;--primary-hover:#4f46e5;--bg-color:#0f172a;--card-bg:#1e293b;--text-main:#f8fafc;--text-muted:#94a3b8;--border-color:#334155;--success:#10b981;--danger:#ef4444;--color-a:#ef4444;--color-b:#3b82f6;--color-c:#eab308;--color-d:#22c55e}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-main);-webkit-font-smoothing:antialiased;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5}.admin-container{max-width:1200px;margin:0 auto;padding:2rem}.admin-header{text-align:center;margin-bottom:2rem}.admin-header h1{background:linear-gradient(90deg,#818cf8,#c084fc);-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-bottom:.5rem;font-size:2.5rem;font-weight:700}.admin-tabs{border-bottom:1px solid var(--border-color);gap:1rem;margin-bottom:2rem;padding-bottom:1rem;display:flex}.tab-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;padding:.5rem 1rem;font-size:1.1rem;font-weight:500;transition:all .2s;position:relative}.tab-btn:hover{color:var(--text-main)}.tab-btn.active{color:var(--primary-color)}.tab-btn.active:after{content:"";background-color:var(--primary-color);border-radius:2px;width:100%;height:2px;position:absolute;bottom:-1rem;left:0}.card{background:var(--card-bg);border:1px solid var(--border-color);border-radius:12px;margin-bottom:1.5rem;padding:1.5rem;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f}.card h2{color:var(--text-main);margin-bottom:1.5rem;font-size:1.5rem}.form-group{margin-bottom:1rem}.form-group label{color:var(--text-muted);margin-bottom:.5rem;font-weight:500;display:block}.form-control{border:1px solid var(--border-color);width:100%;color:var(--text-main);background:#0f172a80;border-radius:8px;padding:.75rem 1rem;font-size:1rem;transition:border-color .2s}.form-control:focus{border-color:var(--primary-color);outline:none}.options-grid{grid-template-columns:1fr 1fr;gap:1rem;display:grid}.btn{cursor:pointer;border:none;border-radius:8px;justify-content:center;align-items:center;padding:.75rem 1.5rem;font-size:1rem;font-weight:600;transition:all .2s;display:inline-flex}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover{background-color:var(--primary-hover);transform:translateY(-1px)}.btn-success{background-color:var(--success);color:#fff}.btn-danger{background-color:var(--danger);color:#fff}.list-group{flex-direction:column;gap:1rem;display:flex}.list-item{border:1px solid var(--border-color);background:#0f172a4d;border-radius:8px;justify-content:space-between;align-items:center;padding:1rem;display:flex}.list-item-content{flex:1}.list-item-actions{gap:.5rem;display:flex}.badge{background:var(--primary-color);color:#fff;border-radius:9999px;padding:.25rem .75rem;font-size:.875rem;font-weight:500;display:inline-block}.room-code-display{letter-spacing:.25rem;text-align:center;border:2px dashed var(--primary-color);color:var(--primary-color);background:#6366f11a;border-radius:12px;margin:1.5rem 0;padding:2rem;font-size:3rem;font-weight:800}.player-container{background-color:var(--bg-color);flex-direction:column;width:100vw;height:100dvh;display:flex;overflow:hidden}.join-screen{background:radial-gradient(circle,#1e293b 0%,#0f172a 100%);flex-direction:column;flex:1;justify-content:center;align-items:center;padding:2rem;display:flex}.join-box{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);text-align:center;background:#1e293bcc;border:1px solid #ffffff1a;border-radius:24px;width:100%;max-width:400px;padding:2.5rem;box-shadow:0 25px 50px -12px #00000080}.join-box h1{background:linear-gradient(135deg,#38bdf8,#818cf8);-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-bottom:2rem;font-size:2.5rem}.join-input{text-align:center;border:2px solid var(--border-color);color:#fff;letter-spacing:.1rem;background:#0f172a99;border-radius:16px;width:100%;margin-bottom:1.5rem;padding:1.25rem;font-size:1.5rem;transition:all .3s}.join-input::placeholder{color:#94a3b880}.join-input:focus{border-color:var(--primary-color);outline:none;box-shadow:0 0 0 4px #6366f133}.join-btn{background:linear-gradient(135deg, var(--primary-color), #818cf8);color:#fff;cursor:pointer;border:none;border-radius:16px;width:100%;padding:1.25rem;font-size:1.5rem;font-weight:800;transition:transform .1s;box-shadow:0 10px 15px -3px #6366f166}.join-btn:active{transform:scale(.97)}.quiz-screen{flex-direction:column;flex:1;display:flex}.quiz-header{text-align:center;background:var(--card-bg);border-bottom:1px solid var(--border-color);flex-direction:column;flex-shrink:0;justify-content:center;padding:1rem;display:flex}.quiz-header h2{color:var(--text-main);margin:0;font-size:1.25rem}.quiz-header .status{color:var(--text-muted);margin-top:.25rem;font-size:.875rem}.answer-grid{flex:1;grid-template-rows:1fr 1fr;grid-template-columns:1fr 1fr;gap:.5rem;padding:.5rem;display:grid}.answer-btn{color:#fff;cursor:pointer;border:none;border-radius:16px;justify-content:center;align-items:center;font-size:3rem;font-weight:900;transition:all .1s;display:flex;position:relative;overflow:hidden;box-shadow:inset 0 -8px #0003,0 10px 15px -3px #0000004d}.answer-btn:before{content:"";background:linear-gradient(#fff3 0%,#fff0 100%);width:100%;height:100%;position:absolute;top:0;left:0}.answer-btn:active{transform:translateY(4px);box-shadow:inset 0 -4px #0003,0 5px 10px -3px #0000004d}.btn-a{background-color:var(--color-a)}.btn-b{background-color:var(--color-b)}.btn-c{background-color:var(--color-c)}.btn-d{background-color:var(--color-d)}.waiting-screen{text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;padding:2rem;display:flex}.spinner{border:6px solid #ffffff1a;border-top-color:var(--primary-color);border-radius:50%;width:64px;height:64px;margin-bottom:2rem;animation:1s ease-in-out infinite spin}@keyframes spin{to{transform:rotate(360deg)}}@media (width<=768px){.admin-tabs{flex-direction:column}.options-grid{grid-template-columns:1fr}}