:root{--chat_color1:#0078ff}.chat-box{width:100%;height:100%;border-radius:.75rem;overflow:hidden;box-shadow:0 0 10px #0000001a;font-family:inherit;transition:background .3s,color .3s;display:flex;flex-direction:column}.chat-header{display:flex;justify-content:space-between;align-items:center;background:var(--chat_color1);color:#fff;padding:.5rem .75rem}.chat-header h6{margin:0;font-weight:600}.chat-actions button{background:rgba(255,255,255,.2);color:#fff;border:none;border-radius:5px;cursor:pointer;transition:background .3s;padding:5px 8px;font-size:.9rem}.chat-actions button:hover{background:rgba(255,255,255,.3)}.chat-messages{flex:1;padding:10px;overflow-y:auto;background:#f5f5f5}.chat-input-area{display:flex;padding:8px;border-top:1px solid #e5e7eb;background:#fff}.chat-input-wrapper{flex:1;margin-right:8px}.chat-input,.chat-input-wrapper select,.chat-input-wrapper textarea{width:100%;box-sizing:border-box;border:1px solid #d1d5db;padding:.5rem .75rem;border-radius:.375rem;outline:none;transition:border-color .2s}.chat-input:focus,.chat-input-wrapper select:focus,.chat-input-wrapper textarea:focus{border-color:var(--chat_color1)}.send-btn{background:var(--chat_color1);color:#fff;border:none;border-radius:.375rem;padding:8px 16px;cursor:pointer;transition:background .3s}.send-btn:hover{opacity:.9}.send-btn:disabled{background:#9ca3af;cursor:not-allowed}.light-theme{background:#fff;color:#000}.dark-theme{background:#1f2937;color:#f9fafb}.dark-theme .chat-header{background:#374151}.dark-theme .chat-messages{background:#111827}.dark-theme .chat-input-area{background:#1f2937;border-top-color:#374151}.dark-theme .chat-input,.dark-theme .chat-input-wrapper select,.dark-theme .chat-input-wrapper textarea{background:#374151;border-color:#4b5563;color:#f9fafb}.chat-bubble{padding:10px 14px;border-radius:16px;margin:6px 0;max-width:85%;word-wrap:break-word;line-height:1.5}.bot{background:#e9ecef;align-self:flex-start}.dark-theme .bot{background:#374151}.user{background:var(--chat_color1);color:#fff;align-self:flex-end}.chat-input-wrapper div{display:flex;flex-direction:column;gap:.5rem}.chat-input-wrapper label{display:flex;align-items:center;gap:.5rem;padding:.5rem;border-radius:.375rem;cursor:pointer;transition:background-color .2s}.chat-input-wrapper label:hover{background-color:#f3f4f6}.dark-theme .chat-input-wrapper label:hover{background-color:#374151}.chat-input-wrapper input[type=radio]{accent-color:var(--chat_color1)}.file-link{text-decoration:none;font-weight:700;color:inherit}.file-link:hover{text-decoration:underline}.image-popup{display:none;position:fixed;z-index:9999;left:0;top:0;width:100%;height:100%;background:rgba(0,0,0,.8);justify-content:center;align-items:center}.image-popup img{max-width:80%;max-height:80%;border-radius:10px;box-shadow:0 0 15px rgba(255,255,255,.3)}.image-popup .close-btn{position:absolute;top:20px;right:40px;font-size:30px;color:#fff;cursor:pointer}