.room-join{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);padding:20px}.room-join-container{background:#fff;border-radius:20px;padding:40px;max-width:600px;width:100%;box-shadow:0 20px 60px #0000004d}h1{font-size:2.5rem;margin:0 0 10px;color:#333;text-align:center}.subtitle{text-align:center;color:#666;margin:0 0 40px}.join-options{display:flex;flex-direction:column;gap:30px}.option-card{text-align:center}.option-card h2{font-size:1.5rem;margin:0 0 20px;color:#444}.btn{padding:15px 30px;border:none;border-radius:10px;font-size:1.1rem;font-weight:600;cursor:pointer;transition:all .3s ease;width:100%}.btn-primary{background:#667eea;color:#fff}.btn-primary:hover:not(:disabled){background:#5568d3;transform:translateY(-2px);box-shadow:0 5px 15px #667eea66}.btn-primary:disabled{background:#ccc;cursor:not-allowed}.btn-secondary{background:#48bb78;color:#fff;margin-top:15px}.btn-secondary:hover{background:#38a169}.btn-large{padding:18px 40px;font-size:1.2rem}.room-input{width:100%;padding:15px;border:2px solid #e2e8f0;border-radius:10px;font-size:1.5rem;text-align:center;font-weight:600;letter-spacing:2px;margin-bottom:20px;text-transform:uppercase}.room-input:focus{outline:none;border-color:#667eea}.divider{text-align:center;color:#999;font-weight:600;position:relative}.divider:before,.divider:after{content:"";position:absolute;top:50%;width:40%;height:1px;background:#e2e8f0}.divider:before{left:0}.divider:after{right:0}.room-code{margin-top:20px;padding:20px;background:#f7fafc;border-radius:10px}.room-code p{margin:0 0 10px;color:#666;font-weight:600}.code-display{font-size:2.5rem;font-weight:700;color:#667eea;letter-spacing:5px;margin-bottom:15px}.info-section{margin-top:40px;padding-top:30px;border-top:1px solid #e2e8f0}.info-text{text-align:center;color:#718096;font-size:.9rem;line-height:1.6}@media (max-width: 768px){.room-join-container{padding:30px 20px}h1{font-size:2rem}.btn-large{padding:15px 30px;font-size:1.1rem}.code-display{font-size:2rem}}.video-grid{display:grid;gap:10px;padding:10px;height:100%;width:100%}.video-container{position:relative;background:#1a202c;border-radius:10px;overflow:hidden;box-shadow:0 4px 6px #0000001a}.video-container.large{grid-column:1 / -1;grid-row:1 / -1}.video-container.small{position:absolute;bottom:20px;right:20px;width:200px;height:150px;z-index:10;border:2px solid white}.video-container video{width:100%;height:100%;object-fit:cover}.video-container video.video-off{display:none}.video-label{position:absolute;bottom:10px;left:10px;background:#000000b3;color:#fff;padding:5px 10px;border-radius:5px;font-size:.9rem;font-weight:600}.video-placeholder{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:#2d3748}.avatar-placeholder{font-size:4rem;opacity:.5}@media (min-width: 768px){.video-grid{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.video-container.small{width:250px;height:188px}}@media (max-width: 767px){.video-container.small{width:150px;height:113px;bottom:80px;right:10px}}.presence-mode{display:flex;flex-direction:column;height:100vh;transition:background-color .3s ease,color .3s ease}.presence-mode.dark-mode{background-color:#1a1a1a;color:#fff}.presence-mode.light-mode{background-color:#f0f0f0;color:#333}.chat-panel-placeholder{position:absolute;right:20px;top:20px;bottom:100px;width:250px;background:#00000080;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:12px;padding:15px;color:#fff;border:1px solid rgba(255,255,255,.1)}.dark-mode .chat-panel-placeholder{background:#0009}.light-mode .chat-panel-placeholder{background:#fffc;color:#333;border:1px solid #ddd}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.app{width:100%;height:100vh;overflow:hidden}.loading-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.spinner{width:50px;height:50px;border:5px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin 1s linear infinite;margin-bottom:20px}@keyframes spin{to{transform:rotate(360deg)}}.loading-screen p{font-size:1.2rem;font-weight:600}.error-toast{position:fixed;bottom:20px;left:50%;transform:translate(-50%);background:#e53e3e;color:#fff;padding:15px 20px;border-radius:10px;box-shadow:0 4px 12px #0000004d;display:flex;align-items:center;gap:15px;z-index:1000;animation:slideUp .3s ease}@keyframes slideUp{0%{transform:translate(-50%) translateY(100px);opacity:0}to{transform:translate(-50%) translateY(0);opacity:1}}.error-toast button{background:none;border:none;color:#fff;font-size:1.2rem;cursor:pointer;padding:0;width:24px;height:24px;display:flex;align-items:center;justify-content:center}.error-toast button:hover{opacity:.8}