/* Categories Page Styles */

/* Categories Section */
.categories-section {
    padding: 40px 0;
}

.categories-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
    align-items: start;
}

/* Categories Main */
.categories-main {
    min-height: 100vh;
}

.categories-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #212427;
    margin: 0;
}

.filter-toggle-btn {
    display: none;
    background: none;
    border: 2px solid #356df1;
    border-radius: 8px;
    padding: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-toggle-btn:hover {
    background-color: #356df1;
}

.filter-toggle-btn:hover svg path {
    fill: #ffffff;
}

/* Categories Topbar */
.categories-topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding: 20px 0;
    border-bottom: 1px solid #e9ecef;
}

.results-count {
    font-size: 14px;
    color: #6c757d;
}

.sort-select {
    padding: 8px 12px;
    border: 1px solid #dee2e6;
    border-radius: 6px;
    background-color: #ffffff;
    font-size: 14px;
    color: #495057;
    cursor: pointer;
    min-width: 180px;
}

.sort-select:focus {
    outline: none;
    border-color: #356df1;
    box-shadow: 0 0 0 2px rgba(53, 109, 241, 0.1);
}

/* Categories Grid */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

/* Category Item */
.category-item {
    background: #f5f7f8;
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.3s ease, border-color 0.3s ease;
    position: relative;
    border: 1px solid #e9ecef;
}

.category-item:hover {
    transform: translateY(-5px);
    border-color: #356df1;
}

.category-tag-wrapper {
    position: absolute;
    top: 12px;
    left: 12px;
    z-index: 2;
}

.category-tag {
    background-color: #ff971a;
    color: #ffffff;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 400;
    text-decoration: none;
    line-height: 1.3;
}

.category-image {
    position: relative;
    overflow: hidden;
    height: 200px;
}

.category-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 10px 10px 0 0;
    transition: transform 0.3s ease;
}

.category-item:hover .category-image img {
    transform: scale(1.05);
}



.category-content {
    padding: 25px;
}

.category-title {
    margin: 0 0 15px 0;
    font-size: 1.3rem;
    font-weight: 600;
    line-height: 1.3;
}

.category-title a {
    color: #212427;
    text-decoration: none;
    transition: color 0.3s ease;
}

.category-title a:hover {
    color: #356df1;
}

.category-description {
    color: #6c757d;
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.category-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.course-count {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: #6c757d;
    font-weight: 500;
}

.course-count svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.category-popularity {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.category-popularity svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.category-popularity span {
    color: #495057;
}

/* Popularity Status Colors */
.category-popularity svg[fill="#ffc107"] + span {
    color: #ffc107;
}

.category-popularity svg[fill="#dc3545"] + span {
    color: #dc3545;
}

.category-popularity svg[fill="#28a745"] + span {
    color: #28a745;
}

/* Pagination */
.pagination-wrapper {
    display: flex;
    justify-content: center;
    margin-top: 40px;
}

.pagination {
    display: flex;
    align-items: center;
    gap: 14px;
}

.page-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border: 2px solid #6c757d;
    border-radius: 50%;
    color: #6c757d;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.page-link:hover,
.page-link.active {
    background-color: #356df1;
    border-color: #356df1;
    color: #ffffff;
}

.page-link.prev,
.page-link.next {
    font-size: 14px;
}

.page-link.prev svg,
.page-link.next svg {
    width: 20px;
    height: 20px;
}

/* Sidebar */
.categories-sidebar {
    background: #f5f7f8;
    border-radius: 10px;
    padding: 0;
    position: sticky;
    top: 20px;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
    border: 1px solid #e9ecef;
}

.sidebar-header {
    display: none;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid #e9ecef;
}

.sidebar-header h3 {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 600;
    color: #212427;
}

.sidebar-close {
    background: none;
    border: none;
    font-size: 18px;
    color: #6c757d;
    cursor: pointer;
    padding: 5px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.sidebar-close:hover {
    background-color: #f8f9fa;
    color: #212427;
}

.sidebar-content {
    padding: 30px;
}

.filter-section {
    margin-bottom: 30px;
}

.filter-section:last-child {
    margin-bottom: 0;
}

.filter-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #212427;
    margin: 0 0 16px 0;
}

.category-type-list,
.course-count-list,
.difficulty-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.category-type-list li,
.course-count-list li,
.difficulty-list li {
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.category-type-list a,
.course-count-list a,
.difficulty-list a {
    color: #495057;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
    flex: 1;
}

.category-type-list a:hover,
.course-count-list a:hover,
.difficulty-list a:hover {
    color: #356df1;
}

/* Radio button styles for filter */
.category-type-list label,
.course-count-list label {
    display: flex;
    align-items: center;
    cursor: pointer;
    color: #495057;
    font-size: 14px;
    transition: color 0.3s ease;
    flex: 1;
}

.category-type-list label:hover,
.course-count-list label:hover {
    color: #356df1;
}

.category-type-list input[type="radio"],
.course-count-list input[type="radio"] {
    margin-right: 8px;
    cursor: pointer;
    accent-color: #356df1;
}

.count {
    color: #6c757d;
    font-size: 12px;
    margin-left: 8px;
}

.reset-filters-btn,
.apply-filters-btn {
    width: 100%;
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.reset-filters-btn {
    background-color: #356df1;
    color: #ffffff;
}

.reset-filters-btn:hover {
    background-color: #000000;
}

.apply-filters-btn {
    background-color: #356df1;
    color: #ffffff;
}

.apply-filters-btn:hover {
    background-color: #000000;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .categories-layout {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .filter-toggle-btn {
        display: block;
    }
    
    .categories-sidebar {
        position: fixed;
        top: 0;
        right: -300px;
        width: 300px;
        height: 100vh;
        z-index: 1000;
        transition: right 0.3s ease;
        max-height: none;
        overflow-y: auto;
        border-radius: 0;
        padding: 0;
    }
    
    .categories-sidebar .sidebar-header {
        display: flex;
    }
    
    .categories-sidebar .sidebar-content {
        padding: 20px;
    }
    
    .categories-sidebar.active {
        right: 0;
    }
    
    .sidebar-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }
    
    .sidebar-overlay.active {
        opacity: 1;
        visibility: visible;
    }
}

@media (max-width: 768px) {
    .categories-section {
        padding: 20px 0;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .categories-topbar {
        flex-direction: column;
        gap: 15px;
        align-items: stretch;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .category-content {
        padding: 20px;
    }
    
    .category-image {
        height: 200px;
    }
    
    .pagination {
        gap: 8px;
    }
    
    .page-link {
        width: 40px;
        height: 40px;
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .categories-header {
        flex-direction: column;
        gap: 15px;
        align-items: stretch;
    }
    
    .page-title {
        font-size: 1.8rem;
        text-align: center;
    }
    
    .filter-toggle-btn {
        align-self: center;
    }
    
    .categories-sidebar {
        width: 280px;
        padding: 0;
    }
    
    .categories-sidebar .sidebar-content {
        padding: 20px;
    }
    
    .category-item {
        margin-bottom: 20px;
    }
    
    .category-image {
        height: 180px;
    }
    
    .category-content {
        padding: 16px;
    }
    
    .category-title {
        font-size: 1.1rem;
    }
    
    .category-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
}



/* Loading States */
.categories-grid.loading {
    opacity: 0.6;
    pointer-events: none;
}

.category-item.loading {
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
    100% {
        opacity: 1;
    }
}

/* Filter Active States */
.filter-active {
    color: #356df1 !important;
    font-weight: 600 !important;
}

.filter-active::after {
    content: '✓';
    margin-left: 8px;
    color: #356df1;
    font-weight: bold;
}