body { font-family: sans-serif; background: #f4f7f6; display: flex; justify-content: center; height: 100vh; margin: 0; }
.chat-container { width: 400px; background: white; border-radius: 10px; box-shadow: 0 5px 15px rgba(0,0,0,0.1); display: flex; flex-direction: column; overflow: hidden; margin-top: 20px; height: 80vh; }
.header { background: #007bff; color: white; padding: 15px; text-align: center; font-weight: bold; }
.chat-box { flex: 1; padding: 15px; overflow-y: auto; display: flex; flex-direction: column; gap: 10px; }
.message { padding: 10px; border-radius: 8px; max-width: 80%; line-height: 1.4; }
.user { background: #007bff; color: white; align-self: flex-end; }
.bot { background: #e9ecef; color: #333; align-self: flex-start; }
.input-area { padding: 10px; border-top: 1px solid #ddd; display: flex; gap: 10px; }
input { flex: 1; padding: 10px; border: 1px solid #ddd; border-radius: 5px; outline: none; }
button { padding: 10px 20px; background: #007bff; color: white; border: none; border-radius: 5px; cursor: pointer; }
button:hover { background: #0056b3; }
/* Upload section styles */
.upload-section { background: #eee; padding: 10px; font-size: 12px; text-align: center; border-bottom: 1px solid #ccc;}