*{box-sizing:border-box;margin:0;padding:0}body{justify-content:center;align-items:center;min-height:100vh;padding:20px}.container{border-radius:var(--radius-md);box-shadow:none;background:#fff3;overflow:hidden}header{color:#fff;text-shadow:none;text-align:center;padding:20px}header h1{margin-bottom:5px;font-size:24px}header p{opacity:.8;font-size:14px}.main-content{gap:20px;padding:20px;display:flex}@media (width<=768px){.main-content{flex-direction:column}}.video-container{border-radius:var(--radius-sm);flex:1;position:relative;overflow:hidden}.video-wrapper{width:100%;padding-bottom:100%;position:relative}.video-wrapper video{object-fit:cover;pointer-events:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;width:100%;height:100%;position:absolute;top:0;left:0}.chat-container{flex-direction:column;flex:1;display:flex}.chat-history{border-radius:var(--radius-md);background-color:#f9f9f930;border:1px solid #eeeeee5a;height:300px;margin-bottom:15px;padding:15px;overflow-y:auto}.message{flex-direction:column;margin-bottom:15px;display:flex}.user-message{align-items:flex-end}.ai-message{align-items:flex-start}.message-bubble{border-radius:var(--radius-lg);max-width:80%;margin-top:5px;padding:12px 16px;line-height:1.4;position:relative}.user-message .message-bubble{color:#fff;background-color:#4b6cb7;border-bottom-right-radius:5px}.ai-message .message-bubble{color:#333;background-color:#f0f2f5;border-bottom-left-radius:5px}.message-label{color:#fff;margin-bottom:3px;font-size:12px}.input-area{gap:10px;margin-bottom:15px;display:flex}#text-input{border-radius:var(--radius-xl);border:1px solid #ddd;outline:none;flex:1;padding:12px 15px;font-size:16px;transition:border-color .3s}#text-input:focus{border-color:#4b6cb7}.voice-controls{gap:10px;margin-bottom:15px;display:flex}button{color:#fff;border-radius:var(--radius-xl);cursor:pointer;background-color:#4b6cb7;border:none;align-items:center;gap:8px;padding:12px 25px;font-size:16px;transition:background-color .3s;display:flex}button:hover{background-color:#3a5a9c}button:disabled{cursor:not-allowed;background-color:#ccc}#start-voice-btn{background-color:#48bb78}#stop-voice-btn{background-color:#f56565;display:none}#send-btn{flex:1}.status{text-align:center;color:#fff;padding:10px;font-size:14px}.loading{vertical-align:middle;border:3px solid #4b6cb74d;border-top-color:#4b6cb7;border-radius:50%;width:20px;height:20px;margin-right:10px;animation:1s ease-in-out infinite spin;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.copy-success{color:#fff;border-radius:var(--radius-sm);z-index:100;opacity:0;background:#000000b3;padding:10px 20px;transition:opacity .3s;position:fixed;top:20px;left:50%;transform:translate(-50%)}.show{opacity:1}.copyright{text-align:center;color:#fff;border-top:1px solid #e2e8f0;margin-top:1rem;padding:1rem;font-size:.85em}@media (width<=600px){.message-bubble{max-width:90%}.input-area,.voice-controls{flex-direction:column}button{width:100%}}