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h2{margin-bottom:10px}.messages-area{background:#f8f9fa;flex:1;padding:20px;overflow-y:auto}.chat-header{background:#fff;border-bottom:1px solid #e5e7eb;align-items:center;height:70px;padding:0 20px;font-weight:600;display:flex}.message-bubble{word-wrap:break-word;border-radius:10px;max-width:70%;margin-bottom:12px;padding:10px 14px}.message-sent{background:#dcf8c6;margin-left:auto}.message-received{background:#fff;margin-right:auto}.message-input{background:#fff;border-top:1px solid #e5e7eb;gap:10px;padding:15px;display:flex}.message-input input{border:1px solid #dcdcdc;border-radius:6px;outline:none;flex:1;padding:12px;font-size:14px}.message-input button{color:#fff;cursor:pointer;background:#25d366;border:none;border-radius:6px;padding:12px 20px;font-weight:600}.message-input button:hover{background:#1fb85b}