:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}:root{--background-primary: #18191A;--background-secondary: #242526;--background-tertiary: #3A3B3C;--text-primary: #E4E6EB;--text-secondary: #B0B3B8;--accent-primary: #0084FF;--accent-hover: #0073e6;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}body,html{margin:0;padding:0;height:100%;font-family:var(--font-family);background-color:var(--background-primary);color:var(--text-primary)}*{box-sizing:border-box}.app-container{display:flex;height:100vh}.sidebar{flex:0 0 240px;background-color:var(--background-secondary);display:flex;flex-direction:column;padding:1rem}.sidebar-header h1{font-size:1.5rem;margin:.5rem 0 1rem;color:var(--text-primary)}.room-list .room-item.active{background-color:var(--background-tertiary);color:var(--text-primary);padding:.75rem;border-radius:8px;font-weight:500}.main-content{flex:1;display:flex;flex-direction:column}.join-screen{flex-grow:1;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:2rem}.join-screen h2{font-size:2.5rem;margin-bottom:.5rem}.join-screen p{color:var(--text-secondary);margin-bottom:2rem}.join-form{display:flex}.join-form input,.join-form button{font-size:1rem;padding:.75rem 1rem;border-radius:8px;border:1px solid var(--background-tertiary)}.join-form input{background-color:var(--background-tertiary);color:var(--text-primary);margin-right:.5rem}.join-form input:focus{outline:2px solid var(--accent-primary)}.join-form button{background-color:var(--accent-primary);color:#fff;font-weight:600;cursor:pointer}.join-form button:hover{background-color:var(--accent-hover)}.chat-screen{display:flex;flex-direction:column;height:100%}.chat-header{padding:1.25rem;border-bottom:1px solid var(--background-secondary)}.chat-header h3{margin:0;font-size:1.2rem}.messages-list{flex-grow:1;overflow-y:auto;padding:1rem}.message-item{margin-bottom:1rem}.message-item.message-info,.message-item.message-error{text-align:center;color:var(--text-secondary);font-style:italic}.message-item.message-error{color:#ff6b6b}.message-item.message-received{display:flex;flex-direction:column;align-items:flex-start}.sender-name{font-size:.8rem;color:var(--text-secondary);margin-left:.5rem;margin-bottom:.25rem}.message-content{background-color:var(--background-secondary);padding:.75rem 1rem;border-radius:18px;max-width:70%}.message-form{padding:1rem 1.5rem;display:flex}.message-form input{flex-grow:1;background-color:var(--background-tertiary);color:var(--text-primary);border:none;border-radius:8px;padding:.75rem 1rem;font-size:1rem;margin-right:1rem}.message-form input:focus{outline:2px solid var(--accent-primary)}.message-form button{background-color:var(--accent-primary);color:#fff;border:none;border-radius:8px;padding:0 1.5rem;font-weight:600;cursor:pointer;font-size:1rem}.message-form button:hover{background-color:var(--accent-hover)}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--background-secondary)}::-webkit-scrollbar-thumb{background:var(--background-tertiary);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#555}