* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
            display: flex;
            flex-direction:column;
            justify-content: center;
            align-items: center;
            color: #333;
        }
        
        .container {
            max-width: 800px;
            width: 100%;
            background: white;
            border-radius: 20px;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
            overflow: hidden;
            margin-top:40px;
            margin-bottom:20px;
        }
        
        .sells-header {
            background: linear-gradient(90deg,#2c7be5 0%, #12263f 100%);
            color: white;
            padding: 30px;
            text-align: center;
        }
        
       .sells-header h1 {
            font-size: 2.5rem;
            margin-bottom: 10px;
        }
        
      .sells-header p {
            font-size: 1.1rem;
            opacity: 0.9;
        }
        
        .form-container {
            padding: 40px;
        }
        
        .form-group {
            margin-bottom: 25px;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 1.1rem;
        }
        
        .form-group input, 
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 15px;
            border: 1px solid #ddd;
            border-radius: 10px;
            font-size: 1rem;
            transition: all 0.3s ease;
        }
        
        .form-group input:focus, 
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #2c7be5;
            box-shadow: 0 0 0 3px rgba(75, 108, 183, 0.2);
            outline: none;
        }
        
        .required::after {
            content: " *";
            color: #e74c3c;
        }
        
        .optional {
            font-weight: normal;
            color: #777;
            font-size: 0.9rem;
        }
        
        .image-upload {
            border: 2px dashed #ccc;
            border-radius: 10px;
            padding: 25px;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .image-upload:hover {
            border-color: #2c7be5;
            background-color: #f8f9ff;
        }
        
        .image-upload i {
            font-size: 3rem;
            color: #4b6cb7;
            margin-bottom: 15px;
        }
        
        #imagePreview {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin-top: 20px;
        }
        
        .preview-item {
            width: 120px;
            height: 120px;
            border-radius: 10px;
            overflow: hidden;
            position: relative;
            box-shadow: 0 3px 10px rgba(0,0,0,0.1);
        }
        
        .preview-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        
        .preview-item .remove {
            position: absolute;
            top: 5px;
            right: 5px;
            background: rgba(0,0,0,0.5);
            color: white;
            border-radius: 50%;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }
        
        .submit-btn {
            background: linear-gradient(90deg, #2c7be5 0%, #12263f 100%);
            color: white;
            border: none;
            padding: 16px 40px;
            font-size: 1.1rem;
            border-radius: 10px;
            cursor: pointer;
            width: 100%;
            font-weight: 600;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        
        .submit-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(75, 108, 183, 0.4);
        }
        
        .submit-btn:active {
            transform: translateY(0);
        }
        
        .form-note {
            background-color: #f8f9ff;
            border-left: 4px solid #2c7be5;
            padding: 15px;
            border-radius: 0 10px 10px 0;
            margin-top: 20px;
            font-size: 0.95rem;
            margin-bottom:10px;
        }
        
        footer {
            text-align: center;
            padding: 20px;
            background: #f5f7fa;
            color: #666;
            font-size: 0.9rem;
        }
        
        @media (max-width: 800px) {
            .sells-header{
            display:block;
            
        }
        .sells-header h1 {
            font-size: 1.5rem;
          
        }
        }
        
        
        @media (max-width: 600px) {
            .form-container {
                padding: 25px;
            }
            
            .sells-header h1 {
                font-size: 1.5rem;
            }
            
           .sells-header {
                padding: 20px;
            }
        }