/* ===================================
   DATASETS PAGE STYLES
   Dark gray + Cream white theme
   =================================== */

/* Dataset Hero */
.dataset-hero {
    padding: var(--space-3xl) 0 var(--space-xl) 0;
    text-align: center;
    background: linear-gradient(135deg, #faf5ff 0%, #eff6ff 50%, #f0fdf4 100%);
    border-bottom: 1px solid rgba(139, 92, 246, 0.15);
    position: relative;
}

.dataset-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse 80% 50% at 20% 20%, rgba(139, 92, 246, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 80% 80%, rgba(59, 130, 246, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.dataset-hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: var(--space-md);
    color: var(--color-text-dark);
    position: relative;
}

.dataset-hero p {
    font-size: var(--text-lg);
    color: var(--color-text-gray);
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

/* Category Tabs */
.dataset-category-tabs {
    padding: var(--space-lg) 0;
    background: var(--color-bg-gray-50);
    border-bottom: 1px solid var(--color-border-gray);
    position: sticky;
    top: 70px;
    z-index: 50;
}

.category-tabs-wrapper {
    display: flex;
    gap: var(--space-sm);
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.category-tabs-wrapper::-webkit-scrollbar {
    display: none;
}

.category-tab {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    background: white;
    border: 1px solid var(--color-border-gray);
    border-radius: var(--radius-full);
    color: var(--color-text-gray);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    font-family: var(--font-sans);
}

.category-tab svg {
    flex-shrink: 0;
    stroke: var(--color-text-gray-light);
}

.category-tab:hover {
    border-color: var(--color-purple);
    color: var(--color-purple);
    background-color: rgba(139, 92, 246, 0.05);
}

.category-tab:hover svg {
    stroke: var(--color-purple);
}

.category-tab.active {
    background: linear-gradient(135deg, var(--color-purple), var(--color-indigo));
    border-color: var(--color-purple);
    color: white;
}

.category-tab.active svg {
    stroke: white;
}

.tab-count {
    background: rgba(26, 26, 26, 0.08);
    padding: 0.125rem 0.5rem;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
}

.category-tab.active .tab-count {
    background: rgba(255, 255, 255, 0.25);
}

/* Dataset Filters / Search */
.dataset-filters {
    padding: var(--space-lg) 0;
    background: white;
}

.search-box {
    position: relative;
    max-width: 500px;
}

.search-box svg {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-gray-light);
}

.search-box input {
    width: 100%;
    padding: 0.875rem 1rem 0.875rem 3rem;
    font-size: var(--text-base);
    color: var(--color-text-dark);
    background-color: var(--color-bg-gray-50);
    border: 1px solid var(--color-border-gray);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    font-family: var(--font-sans);
}

.search-box input:focus {
    outline: none;
    border-color: var(--color-purple);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.search-box input::placeholder {
    color: var(--color-text-gray-light);
}

/* Datasets Section */
.datasets-section {
    padding: var(--space-lg) 0 var(--space-3xl) 0;
    background: linear-gradient(180deg, white 0%, var(--color-bg-gray-50) 100%);
}

/* Datasets Grid */
.datasets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

/* Dataset Card */
.dataset-card {
    background-color: white;
    border: 1px solid var(--color-border-gray);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    transition: all var(--transition-base);
    position: relative;
}

.dataset-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-purple), var(--color-blue));
    opacity: 0;
    transition: opacity var(--transition-base);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.dataset-card:hover {
    border-color: rgba(139, 92, 246, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 10px 40px rgba(139, 92, 246, 0.12);
}

.dataset-card:hover::before {
    opacity: 1;
}

.dataset-category-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(99, 102, 241, 0.1));
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-purple);
    margin-bottom: var(--space-md);
    width: fit-content;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.dataset-card h3 {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-text-dark);
    margin-bottom: var(--space-sm);
    line-height: 1.3;
    font-family: var(--font-sans);
}

.dataset-description {
    font-size: var(--text-sm);
    color: var(--color-text-gray-light);
    line-height: 1.6;
    margin-bottom: var(--space-md);
    flex-grow: 1;
}

/* Dataset Stats */
.dataset-stats {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    flex-wrap: wrap;
}

.dataset-stat {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: var(--text-sm);
    color: var(--color-text-dark);
    font-weight: 500;
}

.dataset-stat svg {
    color: var(--color-purple);
    flex-shrink: 0;
}

/* Dataset Details */
.dataset-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
    padding: var(--space-md) 0;
    border-top: 1px solid var(--color-border-gray);
    margin-bottom: var(--space-md);
}

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

.dataset-detail strong {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-text-gray-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.dataset-detail span {
    font-size: var(--text-sm);
    color: var(--color-text-gray);
}

/* Dataset Link */
.dataset-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-purple);
    margin-top: auto;
    transition: all var(--transition-base);
}

.dataset-link:hover {
    gap: 0.75rem;
    color: var(--color-indigo);
}

.dataset-link svg {
    transition: transform var(--transition-base);
}

.dataset-link:hover svg {
    transform: translateX(4px);
}

/* Pagination */
.pagination-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

.pagination {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pagination-btn {
    min-width: 36px;
    height: 36px;
    padding: 0 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border: 1px solid var(--color-border-gray);
    border-radius: var(--radius-md);
    color: var(--color-text-gray);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-sans);
}

.pagination-btn:hover:not(.disabled):not(.active) {
    border-color: var(--color-purple);
    color: var(--color-purple);
    background-color: rgba(139, 92, 246, 0.05);
}

.pagination-btn.active {
    background: linear-gradient(135deg, var(--color-purple), var(--color-indigo));
    border-color: var(--color-purple);
    color: white;
}

.pagination-btn.disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.pagination-ellipsis {
    padding: 0 0.5rem;
    color: var(--color-text-gray-light);
}

.pagination-info {
    font-size: var(--text-sm);
    color: var(--color-text-gray-light);
}

/* No Results */
.no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--space-3xl) var(--space-lg);
}

.no-results svg {
    color: var(--color-text-gray-light);
    margin-bottom: var(--space-md);
}

.no-results h3 {
    font-size: var(--text-xl);
    color: var(--color-text-dark);
    margin-bottom: var(--space-sm);
    font-family: var(--font-sans);
}

.no-results p {
    color: var(--color-text-gray-light);
    margin-bottom: 0;
}

/* Loading State */
.loading-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--space-3xl) var(--space-lg);
    color: var(--color-text-gray-light);
}

/* More Datasets Notice */
.more-datasets-notice {
    background: linear-gradient(135deg, #fff7ed 0%, #fdf2f8 50%, #fef2f2 100%);
    border: 1px solid rgba(249, 115, 22, 0.15);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    text-align: center;
    margin-top: var(--space-2xl);
    position: relative;
}

.more-datasets-notice::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse 70% 50% at 30% 30%, rgba(249, 115, 22, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 70% 70%, rgba(236, 72, 153, 0.06) 0%, transparent 50%);
    pointer-events: none;
    border-radius: var(--radius-xl);
}

.more-datasets-notice svg {
    color: var(--color-pink);
    margin-bottom: var(--space-md);
    position: relative;
}

.more-datasets-notice h3 {
    font-size: var(--text-xl);
    color: var(--color-text-dark);
    margin-bottom: var(--space-md);
    font-family: var(--font-sans);
    position: relative;
}

.more-datasets-notice p {
    color: var(--color-text-gray);
    max-width: 600px;
    margin: 0 auto var(--space-sm) auto;
    position: relative;
}

.more-datasets-notice .notice-highlight {
    color: var(--color-text-dark);
    font-weight: 500;
    margin-bottom: var(--space-lg);
}

.more-datasets-notice .btn {
    margin-top: var(--space-md);
    background: linear-gradient(135deg, var(--color-orange), var(--color-pink));
    border: none;
    color: white;
    position: relative;
}

.more-datasets-notice .btn:hover {
    background: linear-gradient(135deg, var(--color-pink), var(--color-orange));
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(236, 72, 153, 0.3);
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .datasets-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    .dataset-hero {
        padding: var(--space-2xl) 0 var(--space-lg) 0;
    }

    .dataset-category-tabs {
        top: 60px;
    }

    .category-tabs-wrapper {
        gap: 0.5rem;
        padding: 0 var(--space-md);
        margin: 0 calc(-1 * var(--space-lg));
    }

    .category-tab {
        padding: 0.5rem 0.75rem;
        font-size: var(--text-xs);
    }

    .category-tab span:not(.tab-count) {
        display: none;
    }

    .search-box {
        max-width: 100%;
    }

    .datasets-grid {
        grid-template-columns: 1fr;
    }

    .dataset-card {
        padding: var(--space-md);
    }

    .dataset-details {
        grid-template-columns: 1fr;
    }

    .pagination {
        flex-wrap: wrap;
        justify-content: center;
    }

    .more-datasets-notice {
        padding: var(--space-xl);
    }
}

@media (max-width: 480px) {
    .dataset-hero h1 {
        font-size: var(--text-2xl);
    }

    .dataset-stats {
        flex-direction: column;
        gap: var(--space-sm);
    }
}

/* ===================================
   DATASET DETAIL PAGE STYLES
   =================================== */

/* Breadcrumb */
.breadcrumb-section {
    padding: var(--space-md) 0;
    background-color: var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-border-primary);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: var(--text-sm);
    flex-wrap: wrap;
}

.breadcrumb a {
    color: var(--color-text-tertiary);
    transition: color var(--transition-base);
}

.breadcrumb a:hover {
    color: var(--color-cream);
}

.breadcrumb svg {
    color: var(--color-text-tertiary);
    opacity: 0.5;
    flex-shrink: 0;
}

.breadcrumb span {
    color: var(--color-cream);
}

/* Detail Header */
.detail-header {
    padding: var(--space-2xl) 0 var(--space-xl) 0;
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
}

.detail-header-content {
    max-width: 900px;
}

.detail-badge {
    display: inline-block;
    padding: 0.375rem 1rem;
    background: rgba(245, 240, 232, 0.1);
    border: 1px solid var(--color-border-primary);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-cream);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-lg);
}

.detail-header h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--space-md);
    color: var(--color-cream);
    line-height: 1.3;
    font-weight: 600;
}

.detail-description {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-xl);
    max-width: 700px;
}

.detail-actions {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.detail-actions .btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

/* Specifications Section */
.detail-specs-section {
    padding: var(--space-2xl) 0;
}

.specs-wrapper {
    max-width: 800px;
}

.specs-wrapper h2 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-lg);
    color: var(--color-cream);
    font-family: var(--font-sans);
    font-weight: 600;
}

.specs-table-container {
    background: transparent;
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.specs-table {
    width: 100%;
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--color-border-primary);
    border-collapse: collapse;
}

.specs-table tbody tr {
    border-bottom: 1px solid var(--color-border-primary);
    transition: background-color var(--transition-base);
}

.specs-table tbody tr:last-child {
    border-bottom: none;
}

.specs-table tbody tr:hover {
    background-color: rgba(245, 240, 232, 0.03);
}

.specs-table td {
    padding: 16px 24px;
    font-size: var(--text-base);
    vertical-align: top;
}

.specs-table td:first-child {
    font-weight: 600;
    color: var(--color-cream);
    width: 35%;
    background-color: rgba(245, 240, 232, 0.03);
}

.specs-table td:last-child {
    color: var(--color-text-secondary);
}

/* Info Cards Section */
.detail-info-section {
    padding: var(--space-2xl) 0;
    background-color: var(--color-bg-secondary);
}

.info-cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.info-card {
    padding: var(--space-xl);
    background-color: var(--color-bg-primary);
    border: 1px solid var(--color-border-primary);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.info-card:hover {
    border-color: rgba(245, 240, 232, 0.2);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.info-card-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-md) auto;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(245, 240, 232, 0.1), rgba(245, 240, 232, 0.05));
    border: 1px solid var(--color-border-primary);
    border-radius: var(--radius-lg);
    color: var(--color-cream);
}

.info-card h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-sm);
    color: var(--color-cream);
    font-family: var(--font-sans);
    font-weight: 600;
}

.info-card p {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    line-height: 1.6;
    margin-bottom: 0;
}

/* Related Datasets Section */
.related-section {
    padding: var(--space-2xl) 0;
}

.related-section h2 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-xl);
    color: var(--color-cream);
    font-family: var(--font-sans);
    font-weight: 600;
}

.related-datasets-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.related-card {
    display: flex;
    flex-direction: column;
    padding: var(--space-lg);
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border-primary);
    border-radius: var(--radius-xl);
    text-decoration: none;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.related-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-cream), var(--color-cream-dark));
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.related-card:hover {
    border-color: rgba(245, 240, 232, 0.2);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.related-card:hover::before {
    transform: scaleX(1);
}

.related-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(245, 240, 232, 0.1);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-cream);
    margin-bottom: var(--space-md);
    width: fit-content;
}

.related-card h3 {
    font-size: var(--text-base);
    color: var(--color-cream);
    margin-bottom: var(--space-sm);
    font-family: var(--font-sans);
    font-weight: 600;
    line-height: 1.4;
}

.related-card p {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    line-height: 1.6;
    flex-grow: 1;
    margin-bottom: var(--space-md);
}

.related-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-cream);
    margin-top: auto;
}

.related-card:hover .related-link {
    gap: 0.75rem;
}

.related-link svg {
    transition: transform var(--transition-base);
}

.related-card:hover .related-link svg {
    transform: translateX(4px);
}

/* Detail CTA Section */
.detail-cta {
    padding: var(--space-2xl) 0;
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border-primary);
}

.cta-box {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
    padding: var(--space-2xl);
    background: linear-gradient(135deg, rgba(245, 240, 232, 0.05), rgba(245, 240, 232, 0.02));
    border: 1px solid var(--color-border-primary);
    border-radius: var(--radius-xl);
}

.cta-box h2 {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-md);
    color: var(--color-cream);
    font-weight: 600;
}

.cta-box p {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
}

/* Detail Page Responsive */
@media (max-width: 1024px) {
    .info-cards-grid,
    .related-datasets-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .detail-header {
        padding: var(--space-xl) 0;
    }

    .detail-actions {
        flex-direction: column;
    }

    .detail-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .specs-table td {
        padding: 12px 16px;
        font-size: var(--text-sm);
    }

    .specs-table td:first-child {
        width: 40%;
    }

    .info-cards-grid,
    .related-datasets-grid {
        grid-template-columns: 1fr;
    }

    .breadcrumb {
        font-size: var(--text-xs);
        gap: 8px;
    }

    .cta-box {
        padding: var(--space-xl);
    }
}