/* (Inheriting core styles from previous layout) */
        @import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

        :root {
            --sidebar-width: 260px;
            --sidebar-collapsed-width: 80px;
            --primary-color: #4361ee;
            --bg-color: #f8f9fa;
            --white: #ffffff;
            --border-color: #e2e8f0;
            --text-main: #2b2d42;
            --text-muted: #8d99ae;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        /* --- ADD PRODUCT FORM STYLES --- */
        .form-container {
            background: var(--white);
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            max-width: 1000px;
            margin: 0 auto;
        }

        .form-header { margin-bottom: 25px; border-bottom: 1px solid var(--border-color); padding-bottom: 15px; }
        .form-header h2 { font-size: 20px; font-weight: 600; }

        .product-form {
            display: grid;
            grid-template-columns: repeat(2, 1fr); /* 2 Columns on Desktop */
            gap: 20px;
        }

        .form-group { display: flex; flex-direction: column; gap: 8px; }
        .form-group.full-width { grid-column: span 2; }

        label { font-size: 14px; font-weight: 500; color: var(--text-main); }
        
        input, select, textarea {
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 14px;
            outline: none;
            transition: border 0.2s;
        }

        input:focus, textarea:focus { border-color: var(--primary-color); }

        /* Image Upload Area */
        .image-upload-wrapper {
            border: 2px dashed var(--border-color);
            border-radius: 8px;
            padding: 20px;
            text-align: center;
            position: relative;
            cursor: pointer;
            transition: background 0.2s;
        }

        .image-upload-wrapper:hover { background: #f1f5f9; }
        #imagePreview { max-width: 150px; border-radius: 8px; margin-top: 10px; display: none; }

        /* Buttons */
        .form-actions {
            grid-column: span 2;
            display: flex;
            gap: 12px;
            justify-content: flex-end;
            margin-top: 10px;
        }

        .btn {
            padding: 12px 25px;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            border: none;
            transition: 0.3s;
        }

        .btn-primary { background: var(--primary-color); color: white; }
        .btn-primary:hover { opacity: 0.9; transform: translateY(-1px); }
        .btn-secondary { background: #e2e8f0; color: var(--text-main); }

        /* Mobile Adjustments */
        @media (max-width: 768px) {
  .main-content { left: 0; width: 100%; }
            
            .product-form { grid-template-columns: 1fr; } /* Stack to 1 column */
            .form-group.full-width { grid-column: span 1; }
            .form-actions { grid-column: span 1; flex-direction: column; }
            .btn { width: 100%; }
        }