body{margin:0;font-family:-apple-system,BlinkMacSystemFont,sans-serif;background:linear-gradient(135deg,#128c7e,#075e54);min-height:100vh}.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px}.container{display:flex;gap:40px;align-items:center;flex-wrap:wrap;justify-content:center}.scan-section{background:#fff;padding:40px;border-radius:20px;text-align:center;min-width:300px;box-shadow:0 10px 40px #0003}.scan-section h1{color:#128c7e;margin:0 0 10px;font-size:1.8rem}.scan-section p{color:#666;margin-bottom:30px}.verify-box{margin-bottom:20px}.verify-box input{width:100%;padding:14px;border:2px solid #ddd;border-radius:10px;font-size:1.1rem;text-align:center;letter-spacing:8px;box-sizing:border-box;transition:border-color .2s}.verify-box input:focus{border-color:#128c7e;outline:none}.verify-box input.error{border-color:#e53935}.verify-error{color:#e53935;font-size:.85rem;margin-top:8px}.scan-btn{background:linear-gradient(135deg,#25d366,#128c7e);color:#fff;border:none;padding:25px 40px;border-radius:15px;cursor:pointer;font-size:1rem;display:flex;flex-direction:column;align-items:center;gap:10px;transition:transform .2s,box-shadow .2s,opacity .2s}.scan-btn:hover:not(:disabled){transform:scale(1.05);box-shadow:0 5px 20px #0003}.scan-btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.scan-btn .icon{font-size:2.5rem}.scan-btn .text{font-weight:600;font-size:1.1rem}.qr-area{margin-top:20px}.loading{padding:20px}.spinner{width:40px;height:40px;border:4px solid #eee;border-top-color:#128c7e;border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 10px}@keyframes spin{to{transform:rotate(360deg)}}.error{background:#ffebee;color:#c62828;padding:15px;border-radius:8px;font-size:.9rem;text-align:left}.qr-container img{width:220px;height:220px;border:3px solid #eee;border-radius:12px}.hint{color:#666;font-size:.9rem;margin:15px 0 10px}.cancel-btn{background:#eee;color:#666;border:none;padding:10px 25px;border-radius:8px;cursor:pointer}.success{padding:20px}.check{display:block;width:70px;height:70px;background:#4caf50;color:#fff;font-size:2.5rem;border-radius:50%;line-height:70px;margin:0 auto 15px}.go-btn{background:#128c7e;color:#fff;border:none;padding:12px 30px;border-radius:10px;cursor:pointer;font-size:1rem;margin-top:15px}.auth-section{background:#fff;padding:40px;border-radius:20px;min-width:320px;box-shadow:0 10px 40px #0003}.auth-section h2{text-align:center;color:#128c7e;margin-bottom:20px}.tabs{display:flex;gap:10px;margin-bottom:20px}.tabs button{flex:1;padding:12px;border:none;background:#f0f0f0;border-radius:8px;cursor:pointer;font-size:1rem}.tabs button.active{background:#128c7e;color:#fff}input{width:100%;padding:12px;margin-bottom:12px;border:1px solid #ddd;border-radius:8px;box-sizing:border-box;font-size:1rem}button[type=submit]{width:100%;padding:12px;background:#128c7e;color:#fff;border:none;border-radius:8px;cursor:pointer;font-size:1rem}button[type=submit]:disabled{background:#ccc}.error-msg{color:#e53935;text-align:center;margin-top:15px}.hint{margin-top:20px;padding:12px;background:#f5f5f5;border-radius:8px;text-align:center;font-size:12px;color:#666}body{margin:0;font-family:-apple-system,sans-serif;background:#f5f5f5}.dashboard{padding:20px;max-width:1000px;margin:0 auto}.header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.header h2{color:#128c7e}.logout{background:#f44336;color:#fff;border:none;padding:8px 16px;border-radius:6px;cursor:pointer}.section{background:#fff;border-radius:12px;padding:20px}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px}.section-header button{background:#128c7e;color:#fff;border:none;padding:8px 16px;border-radius:6px;cursor:pointer}table{width:100%;border-collapse:collapse}th,td{padding:12px;text-align:left;border-bottom:1px solid #eee}th{color:#666;font-weight:600;font-size:14px}tr{cursor:pointer}tr:hover{background:#f9f9f9}.status-new{background:#e3f2fd;color:#1565c0;padding:4px 10px;border-radius:12px;font-size:12px}.status-follow{background:#fff3e0;color:#e65100;padding:4px 10px;border-radius:12px;font-size:12px}.status-done{background:#e8f5e9;color:#2e7d32;padding:4px 10px;border-radius:12px;font-size:12px}.empty{text-align:center;padding:40px;color:#999}.modal{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center}.modal-content{background:#fff;padding:25px;border-radius:12px;width:350px}.modal-content h3{margin-bottom:15px}input{width:100%;padding:10px;margin-bottom:10px;border:1px solid #ddd;border-radius:6px;box-sizing:border-box}.actions{display:flex;gap:10px;justify-content:flex-end;margin-top:10px}.actions button{padding:8px 16px;border:none;border-radius:6px;cursor:pointer}.actions button:last-child{background:#128c7e;color:#fff}.chat-page{display:flex;height:100vh;background:#ece5dd}.sidebar{width:280px;background:#fff;display:flex;flex-direction:column}.sidebar-header{padding:15px;display:flex;gap:10px;align-items:center;border-bottom:1px solid #eee}.sidebar-header button{background:#128c7e;color:#fff;border:none;padding:6px 12px;border-radius:6px;cursor:pointer}.customer-list{flex:1;overflow-y:auto}.customer-list>div{padding:12px 15px;cursor:pointer;border-bottom:1px solid #f0f0f0}.customer-list>div:hover{background:#f5f5f5}.customer-list>div.active{background:#e8f5e9}.customer-list .phone{display:block;font-weight:600}.customer-list .msg{font-size:13px;color:#666;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat{flex:1;display:flex;flex-direction:column}.chat-header{background:#fff;padding:15px 20px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #ddd}.chat-header select{padding:5px 10px;border:1px solid #ddd;border-radius:6px}.messages{flex:1;overflow-y:auto;padding:20px}.msg{display:flex;margin-bottom:10px}.msg.outbound{justify-content:flex-end}.bubble{max-width:60%;padding:10px 15px;border-radius:8px;background:#fff}.msg.outbound .bubble{background:#dcf8c6}.bubble .time{display:block;font-size:11px;color:#999;text-align:right;margin-top:4px}.empty{text-align:center;color:#666;padding:40px}.input-area{background:#f0f0f0;padding:15px 20px;display:flex;gap:10px}.input-area input{flex:1;padding:10px 15px;border:none;border-radius:8px;font-size:14px}.input-area button{background:#128c7e;color:#fff;border:none;padding:10px 20px;border-radius:8px;cursor:pointer}.input-area button:disabled{background:#ccc}.no-chat{flex:1;display:flex;align-items:center;justify-content:center;color:#666;font-size:18px}