:root{--chat_color1:#0078ff}.chat-box{width:400px;overflow:hidden;box-shadow:0 0 10px rgb(0 0 0 / .1);font-family:Arial,sans-serif;transition:background 0.3s,color 0.3s}.chat-header{display:flex;justify-content:space-between;align-items:center;background:var(--chat_color1);color:#fff;padding:8px 3px}.chat-header h6{margin-bottom:0;margin-left:2px}.chat-actions button{color:var(--chat_color1);border:none;border-radius:5px;cursor:pointer;transition:0.3s;padding:5px}.chat-actions button:hover{opacity:.8}.chat-messages{height:300px;padding:10px;overflow-y:auto;background:#f5f5f5}#chat-input-area{display:flex;padding:10px;border-top:1px solid #ccc}.light-theme #chat-input-area{background:#fff;color:#000}.dark-theme #chat-input-area{background:#000;color:#fff}#chat-input-wrapper{flex:1}#send-btn{background:var(--chat_color1);color:#fff;border:none;border-radius:5px;padding:8px 12px;cursor:pointer}.light-theme{background:#fff;color:#000}.dark-theme{background:#222;color:#fff}.dark-theme .chat-header{background:#333}.dark-theme .chat-actions button{background:#555;color:#fff}.dark-theme .chat-messages{background:#111}#chat-container{height:100%;width:100%;background:#fff;border-radius:16px;box-shadow:0 4px 12px rgb(0 0 0 / .1);display:flex;flex-direction:column;overflow:hidden}#chat-messages{flex:1;padding:16px;overflow-y:auto;display:flex;flex-direction:column}.chat-bubble{padding:10px 14px;border-radius:16px;margin:6px 0;max-width:80%;word-wrap:break-word}.light-theme .bot{background:#e9ecef;align-self:flex-start}.dark-theme .bot{background:#333;align-self:flex-start}.user{background:var(--chat_color1);color:#fff;align-self:flex-end}#chat-input-area{display:flex;align-items:center;padding:0;gap:8px;width:100%;border-top:1px solid #ddd}#chat-input-wrapper{flex:1}#chat-input{width:100%;box-sizing:border-box;padding:8px}#chat-input{flex:1;border:none;padding:12px;outline:none}#send-btn{background:var(--chat_color1);color:#fff;border:none;padding:8px 16px;cursor:pointer}#send-btn:hover{background:#0069d9}.option-buttons{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}.option-btn{background:var(--chat_color1);color:#fff;border:none;border-radius:12px;padding:8px 12px;cursor:pointer}.option-btn:hover{background:#0056b3}.image-popup{display:none;position:fixed;z-index:9999;left:0;top:0;width:100%;height:100%;background:rgb(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 rgb(255 255 255 / .3)}.image-popup .close-btn{position:absolute;top:20px;right:40px;font-size:30px;color:#fff;cursor:pointer}.file-link{text-decoration:none;font-weight:700}.file-link:hover{text-decoration:underline}