:root {
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: var(--bg-light);
    color: var(--text-primary);
    line-height: 1.6;
}

.main-content-wrapper {
    max-width: 1400px;
    margin: 2rem auto;
    padding: 0 1rem;
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 2rem;
}

/* Sidebar Categories */
.sidebar-categories {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    height: fit-content;
    position: sticky;
    top: 100px;
    transition: all 0.3s ease;
}

.sidebar-categories h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border-color);
}

.category-list {
    list-style: none;
}

.category-list li {
    margin-bottom: 0.5rem;
}

.category-list a {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    font-size: 0.9375rem;
    position: relative;
}

.category-list a::before {
    content: '';
    position: absolute;
    right: 0;
    width: 3px;
    height: 0;
    background: var(--primary-color);
    border-radius: 0 3px 3px 0;
    transition: height 0.2s ease;
}

.category-list a:hover {
    background: var(--bg-light);
    color: var(--primary-color);
    transform: translateX(-4px);
}

.category-list a.active {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
    font-weight: 600;
}

.category-list a.active::before {
    height: 100%;
}

/* Main Products Area */
.main-products-area {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.dashboard-wrapper {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

/* Filter Form */
.filter-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    align-items: end;
}

.filter-form input,
.filter-form select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
    font-family: inherit;
    transition: all 0.2s ease;
    background: var(--bg-white);
    color: var(--text-primary);
}

.filter-form input:focus,
.filter-form select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.filter-form input::placeholder {
    color: var(--text-secondary);
}

.filter-form button {
    padding: 0.75rem 2rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.filter-form button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.filter-form button:active {
    transform: translateY(0);
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

/* Product Card */
.product-card {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.product-card > a {
    display: block;
    overflow: hidden;
    position: relative;
    padding-top: 75%;
    background: var(--bg-light);
}

.product-card > a img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.product-card:hover > a img {
    transform: scale(1.1);
}

.product-info {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    flex: 1;
}

.product-info h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 3rem;
}

.product-info h3 a:hover {
    color: var(--primary-color);
}

.price {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.price span {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--success-color);
}

.original-price {
    font-size: 0.875rem !important;
    color: var(--text-secondary) !important;
    text-decoration: line-through;
    font-weight: 400 !important;
}

.product-views-card {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    padding: 0.5rem 0;
    border-top: 1px solid var(--border-color);
}

.product-views-card svg {
    color: var(--secondary-color);
}

.btn-buy {
    display: block;
    text-align: center;
    padding: 0.75rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.9375rem;
    transition: all 0.3s ease;
    margin-top: auto;
}

.btn-buy:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.page-number {
    padding: 0.625rem 1rem;
    background: var(--bg-white);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    border: 1.5px solid var(--border-color);
    font-weight: 500;
    transition: all 0.2s ease;
    min-width: 44px;
    text-align: center;
}

.page-number:hover {
    background: var(--bg-light);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.page-number.active {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: white;
    border-color: var(--primary-color);
}

/* Responsive */
@media (max-width: 1024px) {
    .main-content-wrapper {
        grid-template-columns: 1fr;
    }

    .sidebar-categories {
        position: static;
    }

    .category-list {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 0.5rem;
    }
}

@media (max-width: 768px) {
    .filter-form {
        grid-template-columns: 1fr;
    }

    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: 1rem;
    }

    .main-content-wrapper {
        margin: 1rem auto;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .products-grid {
        grid-template-columns: 1fr;
    }

    .dashboard-wrapper {
        padding: 1rem;
    }
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.empty-state svg {
    width: 120px;
    height: 120px;
    margin-bottom: 1.5rem;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}