/* Blog Section Styles - Modern Design (updated for simple card layout) */
.blog-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-primary);
}

.blog-section .section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.blog-section .section-title {
    font-size: var(--text-4xl);
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.blog-section .section-description {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    max-width: 820px;
    margin: 0 auto;
}

/* Grid */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

/* Blog Card Layout */
.blog-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: box-shadow var(--transition-normal), transform var(--transition-normal);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* Image Container - Tỷ lệ 3/5 */
.blog-image { 
    position: relative;
    width: 100%;
    /* Tỷ lệ 3:5 (60% của card height) */
    aspect-ratio: 5/3;
    background: var(--bg-tertiary);
    overflow: hidden;
}

.blog-thumbnail, .blog-placeholder { 
    display: block; 
    width: 100%; 
    height: 100%; 
    text-decoration: none;
}

.blog-img { 
    width: 100%; 
    height: 100%; 
    object-fit: cover; 
    transition: transform var(--transition-normal);
}

.blog-card:hover .blog-img {
    transform: scale(1.05);
}

.blog-placeholder { 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    color: var(--text-muted); 
    font-size: var(--text-2xl);
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
}

.placeholder-icon {
    opacity: 0.6;
}

/* Body Container - Tỷ lệ 2/5 */
.blog-card-body { 
    padding: var(--spacing-md);
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

/* Meta line */
.blog-meta { 
    color: var(--text-muted); 
    font-size: var(--text-sm); 
    margin-bottom: var(--spacing-sm);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-xs);
}

.blog-meta .meta-text { 
    color: var(--text-muted); 
}

.blog-meta .meta-sep {
    color: var(--text-muted);
    margin: 0 var(--spacing-xs);
}

.blog-meta .meta-author, .blog-meta .meta-category { 
    color: var(--accent-blue); 
    text-decoration: none; 
    font-weight: 500;
}

.blog-meta .meta-author:hover, .blog-meta .meta-category:hover { 
    text-decoration: underline; 
    color: var(--primary-color);
}

/* Title */
.blog-title { 
    margin: 0 0 var(--spacing-sm); 
    line-height: var(--leading-tight); 
    flex: 1;
}

.blog-title a { 
    color: var(--text-primary); 
    text-decoration: none; 
    font-size: var(--text-lg); 
    font-weight: 700;
    line-height: var(--leading-tight);
    display: block;
}

.blog-title a:hover { 
    color: var(--accent-red); 
}

/* Sticky badge */
.sticky-badge { 
    display: inline-block; 
    font-size: var(--text-xs); 
    padding: 2px var(--spacing-sm); 
    border-radius: var(--radius-full); 
    background: var(--accent-blue); 
    color: white; 
    margin-right: var(--spacing-sm); 
    vertical-align: middle;
    font-weight: 600;
}

/* Excerpt */
.blog-excerpt { 
    color: var(--text-secondary); 
    font-size: var(--text-sm); 
    line-height: var(--leading-relaxed); 
    margin: 0 0 var(--spacing-sm) 0;
    flex: 1;
}

/* CTA */
.blog-cta { 
    text-align: center; 
    margin-top: var(--spacing-lg); 
}

.cta-button { 
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg); 
    border-radius: var(--radius-full); 
    background: var(--accent-red); 
    color: var(--bg-primary); 
    text-decoration: none; 
    font-weight: 700; 
    transition: all var(--transition-normal);
    border: 2px solid var(--accent-red);
}

.cta-button:hover { 
    background: var(--accent-red-dark);
    border-color: var(--accent-red-dark);
    transform: translateY(-2px);
}

.cta-arrow {
    transition: transform var(--transition-normal);
}

.cta-button:hover .cta-arrow {
    transform: translateX(4px);
}

/* Responsive Design */
@media (max-width: 1024px) { 
    .blog-grid { 
        grid-template-columns: repeat(2, 1fr); 
        gap: var(--spacing-md);
    }
    
    .blog-image {
        aspect-ratio: 4/3; /* Tỷ lệ 4:3 trên tablet */
    }
}

@media (max-width: 768px) { 
    .blog-grid { 
        grid-template-columns: 1fr; 
        gap: var(--spacing-md);
    }
    
    .blog-section { 
        padding: var(--spacing-xl) 0; 
    }
    
    .blog-section .section-title { 
        font-size: var(--text-3xl); 
    }
    
    .blog-image {
        aspect-ratio: 16/9; /* Tỷ lệ 16:9 trên mobile */
    }
    
    .blog-card-body {
        padding: var(--spacing-sm);
    }
    
    .blog-meta {
        font-size: var(--text-xs);
        gap: var(--spacing-xs);
    }
    
    .blog-title a {
        font-size: var(--text-base);
    }
    
    .blog-excerpt {
        font-size: var(--text-xs);
    }
}

@media (max-width: 480px) {
    .blog-section {
        padding: var(--spacing-lg) 0;
    }
    
    .blog-section .section-title {
        font-size: var(--text-2xl);
    }
    
    .blog-section .section-description {
        font-size: var(--text-base);
    }
    
    .blog-image {
        aspect-ratio: 3/2; /* Tỷ lệ 3:2 trên small mobile */
    }
    
    .blog-card-body {
        padding: var(--spacing-sm);
    }
    
    .cta-button {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--text-sm);
    }
}


/* High Contrast Mode */
@media (prefers-contrast: high) {
    .blog-card {
        border-width: 2px;
        border-color: var(--text-primary);
    }
    
    .blog-title a:hover {
        text-decoration: underline;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .blog-card:hover {
        transform: none;
    }
    
    .blog-card {
        transition: none;
    }
}

/* Print Styles */
@media print {
    .blog-section {
        background: white !important;
        padding: var(--spacing-md) 0;
    }
    
    .blog-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }
    
    .blog-image {
        background: #f0f0f0;
    }
}