/* Articles Page Styles */

/* Page Header */
.page-header {
    background: linear-gradient(135deg, #10b981 0%, #3b82f6 100%);
    padding: 4rem 0;
    text-align: center;
    color: white;
}

.page-header h1 {
    font-size: 3rem;
    color: white;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.25rem;
    opacity: 0.95;
}

/* Articles Section */
.articles-section {
    padding: 4rem 0;
    background: var(--bg-light);
}

.articles-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 3rem;
}

/* Sidebar */
.articles-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.filter-box {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
}

.filter-box h3 {
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
}

.filter-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.filter-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    background: var(--bg-light);
    border: 2px solid transparent;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    color: var(--text-dark);
    text-align: left;
    width: 100%;
}

.filter-btn:hover {
    background: white;
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateX(5px);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border-color: var(--primary-color);
}

.filter-icon {
    font-size: 1.25rem;
}

.info-box {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(59, 130, 246, 0.1));
    padding: 1.5rem;
    border-radius: 1rem;
    border: 2px solid rgba(16, 185, 129, 0.2);
}

.info-box h4 {
    margin-bottom: 0.75rem;
    color: var(--primary-color);
}

.info-box p {
    color: var(--text-gray);
    line-height: 1.7;
    margin: 0;
}

/* Articles Grid */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.article-card {
    background: white;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.article-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.article-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.article-card:hover .article-image img {
    transform: scale(1.1);
}

.article-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, #8b5cf6, #ec4899);
    color: white;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.article-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.article-category {
    display: inline-block;
    padding: 0.375rem 0.875rem;
    background: rgba(16, 185, 129, 0.1);
    color: var(--primary-color);
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
    width: fit-content;
}

.article-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.article-content h3 a {
    color: var(--text-dark);
    transition: color 0.3s ease;
}

.article-content h3 a:hover {
    color: var(--primary-color);
}

.article-content p {
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: auto;
    flex: 1;
}

.article-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.reading-time {
    color: var(--text-light);
    font-size: 0.875rem;
}

.read-more {
    color: var(--primary-color);
    font-weight: 600;
    transition: all 0.3s ease;
}

.read-more:hover {
    color: var(--primary-dark);
    transform: translateX(3px);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .articles-layout {
        grid-template-columns: 1fr;
    }
    
    .articles-sidebar {
        position: static;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 1.5rem;
    }
    
    .filter-box,
    .info-box {
        margin-bottom: 0;
    }
}

@media (max-width: 768px) {
    .page-header h1 {
        font-size: 2rem;
    }
    
    .page-header p {
        font-size: 1rem;
    }
    
    .articles-sidebar {
        grid-template-columns: 1fr;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .article-footer {
        flex-direction: column;
        gap: 0.5rem;
        align-items: flex-start;
    }
}