.sell-container {
            max-width: 800px;
            margin: 40px auto;
            padding: 0 20px;
        }
        
        .sell-header {
            text-align: center;
            margin-bottom: 40px;
        }
        
        .sell-header h1 {
            font-size: 36px;
            color: #333;
            margin-bottom: 10px;
            font-family: 'Playfair Display', serif;
        }
        
        .sell-header p {
            color: #666;
            font-size: 16px;
        }
        
        .form-container {
            background: white;
            padding: 40px;
            border-radius: 12px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #4a5568;
        }
        
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px;
            border: 1px solid #e2e8f0;
            border-radius: 6px;
            font-family: inherit;
            font-size: 14px;
            transition: all 0.3s;
        }
        
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: #667eea;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }
        
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        
        .info-note {
            font-size: 12px;
            color: #718096;
            margin-top: 5px;
        }
        
        .checkbox-group {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .checkbox-group input {
            width: auto;
        }
        
        .btn-submit {
            width: 100%;
            padding: 14px;
            background: #667eea;
            color: white;
            border: none;
            border-radius: 6px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
        }
        
        .btn-submit:hover {
            background: #5a67d8;
            transform: translateY(-2px);
        }
        
        .alert {
            padding: 12px 16px;
            border-radius: 6px;
            margin-bottom: 20px;
        }
        
        .alert-success {
            background: #c6f6d5;
            color: #22543d;
            border: 1px solid #9ae6b4;
        }
        
        .alert-error {
            background: #fed7d7;
            color: #742a2a;
            border: 1px solid #fc8181;
        }
        
        .alert-warning {
            background: #feebc8;
            color: #7b341e;
            border: 1px solid #fbd38d;
        }
        
        .login-link {
            display: block;
            text-align: center;
            margin-top: 20px;
            color: #667eea;
            text-decoration: none;
        }
        
        .login-link:hover {
            text-decoration: underline;
        }
        
        .seller-benefits {
            max-width: 1200px;
            margin: 60px auto;
            padding: 0 20px;
        }
        
        .seller-benefits h2 {
            text-align: center;
            margin-bottom: 40px;
            font-size: 28px;
            color: #333;
        }
        
        .benefits-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }
        
        .benefit-card {
            text-align: center;
            padding: 30px;
            background: white;
            border-radius: 12px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.08);
        }
        
        .benefit-icon {
            font-size: 48px;
            margin-bottom: 20px;
        }
        
        .benefit-card h3 {
            font-size: 20px;
            margin-bottom: 10px;
            color: #667eea;
        }
        
        .benefit-card p {
            color: #666;
            line-height: 1.6;
        }
        
        @media (max-width: 768px) {
            .form-row {
                grid-template-columns: 1fr;
                gap: 15px;
            }
            
            .form-container {
                padding: 25px;
            }
            
            .sell-header h1 {
                font-size: 28px;
            }
        }