.popup{position:fixed;top:0;left:0;width:100%;height:100%;background:#000000b3;display:flex;justify-content:center;align-items:center;z-index:1000;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.popup-content{background:linear-gradient(145deg,#fff,#f8f9fa);padding:2.5rem;border-radius:20px;text-align:center;max-width:500px;width:90%;box-shadow:0 10px 30px #0003;transform:scale(.95);opacity:0;animation:popIn .3s ease-out forwards}@keyframes popIn{to{transform:scale(1);opacity:1}}.popup-content h2{color:#2c3e50;margin-bottom:1rem;font-size:1.8rem}.intro-text{color:#7f8c8d;margin-bottom:2rem;font-size:.95rem}.room-selector{display:grid;gap:1rem;margin-bottom:2rem}.room-card{display:block;padding:1.5rem;border-radius:12px;cursor:pointer;transition:all .3s ease;border:2px solid transparent;background:#f8f9fa}.room-card:hover{transform:translateY(-3px);box-shadow:0 5px 15px #0000001a}.room-card.alpha{border-color:#3498db}.room-card.zeta{border-color:#2ecc71}.room-card h3{color:#2c3e50;margin:0 0 .5rem}.room-card p{color:#7f8c8d;margin:0;font-size:.9rem}input[type=radio]{display:none}input[type=radio]:checked+.room-card{background:#3498db1a;border-width:3px}.input-group{margin:2rem 0}.input-group input{width:100%;padding:1rem;border:2px solid #e0e0e0;border-radius:8px;font-size:1rem;transition:all .3s ease}.input-group input:focus{border-color:#3498db;outline:none;box-shadow:0 0 0 3px #3498db33}button[type=submit]{width:100%;padding:1rem;background:linear-gradient(135deg,#3498db,#6c5ce7);color:#fff;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;position:relative}button[type=submit]:hover{transform:translateY(-2px);box-shadow:0 5px 15px #3498db4d}button[type=submit]:disabled{background:#bdc3c7;cursor:not-allowed}.spinner{width:24px;height:24px;border:3px solid rgba(255,255,255,.3);border-radius:50%;border-top-color:#fff;animation:spin 1s ease-in-out infinite;margin:0 auto}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width: 480px){.popup-content{padding:1.5rem}.room-card{padding:1rem}}:root{--primary-color: #6c5ce7;--hover-color: #8577ef;--background: #1a1a1a;--text-color: #ffffff}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background:var(--background);color:var(--text-color);min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:1rem}.app-container{position:relative;min-height:100vh}.main-content{display:flex;justify-content:center;align-items:center;min-height:100vh}.container{width:100%;max-width:600px;background:#2d2d2d;border-radius:15px;padding:2rem;margin:auto;box-shadow:0 4px 6px #0000004d}h1{text-align:center;margin-bottom:1.5rem;color:var(--primary-color);font-size:clamp(1.5rem,6vw,2.5rem)}#counter{font-size:clamp(60px,15vw,100px);text-align:center;margin:2rem 0;color:var(--primary-color);text-shadow:0 0 10px rgba(108,92,231,.4)}.buttons{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}button{padding:1rem 2rem;font-size:1.1rem;background:var(--primary-color);color:#fff;border:none;border-radius:8px;cursor:pointer;transition:all .3s ease;flex:1 1 160px;max-width:200px}button:hover{background:var(--hover-color);transform:translateY(-2px);box-shadow:0 4px 8px #0003}button:active{transform:translateY(0)}.bubble-container{position:fixed;bottom:0;left:0;width:100%;pointer-events:none}.bubble{position:absolute;left:50%;transform:translate(-50%);font-size:2rem;animation:bubbleRise 3s ease-out forwards}@keyframes bubbleRise{0%{bottom:0;opacity:0;transform:translate(-50%) translateY(0)}10%{opacity:1}to{bottom:100%;opacity:0;transform:translate(-50%) translateY(-100%)}}@media (max-width: 480px){.container{padding:1.5rem;border-radius:10px}button{font-size:1rem;padding:1rem;flex:1 1 100%}}.bubble-container{position:fixed;bottom:0;left:0;width:100%;pointer-events:none;z-index:1000}.bubble{position:absolute;bottom:0;left:50%;transform:translate(-50%);font-size:2rem;opacity:0;animation:bubbleZigZag 4s ease-out forwards}@keyframes bubbleZigZag{0%{transform:translate(-50%) translateY(0);opacity:0}10%{opacity:1}25%{transform:translate(calc(-50% - 40px)) translateY(-25%)}50%{transform:translate(calc(-50% + 40px)) translateY(-50%)}75%{transform:translate(calc(-50% - 40px)) translateY(-75%)}to{transform:translate(-50%) translateY(-100%);opacity:0}}.active-users{position:fixed;bottom:20px;right:20px;background:#000c;color:#fff;padding:10px 20px;border-radius:20px;font-size:.9em}.popup{position:fixed;top:0;left:0;width:100%;height:100%;background:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000}.popup-content{background:#fff;padding:2rem;border-radius:10px;text-align:center}.popup-content input{padding:.5rem;margin-right:1rem;font-size:1rem}.popup-content button{padding:.5rem 1rem;font-size:1rem;background:#007bff;color:#fff;border:none;border-radius:5px;cursor:pointer}.sidebar{position:fixed;left:0;top:0;width:250px;height:100vh;padding:1rem;background:#1a1a1a}.sidebar{position:fixed;left:0;top:0;height:100vh;width:250px;background:#1a1a1a;transition:transform .3s ease-in-out;z-index:1000;box-shadow:2px 0 5px #0000001a}.user-list{list-style:none;padding:0}.user-list li{padding:.5rem;margin:.25rem 0;background:#2d2d2d;border-radius:5px}.active-users{font-weight:700;margin-bottom:1rem}.sidebar-content{padding:20px;overflow-y:auto;height:calc(100% - 40px)}.toggle-btn{position:absolute;right:-40px;top:10px;width:40px;height:40px;border:none;background:#2d2d2d;cursor:pointer;border-radius:0 5px 5px 0;box-shadow:2px 0 5px #0000001a}.sidebar-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;z-index:999;display:none}.sidebar.collapsed{transform:translate(-100%)}.sidebar.collapsed .toggle-btn{right:-40px}@media (max-width: 768px){.sidebar{width:80%;transform:translate(-100%);box-shadow:5px 0 15px #0003}.sidebar:not(.collapsed){transform:translate(0)}.sidebar-overlay{display:block}.toggle-btn{right:-50px}}