/* Blog Clean Design CSS */
:root {
    --blog-primary-color: #6366f1;
    --blog-secondary-color: #8b5cf6;
    --blog-accent-color: #06b6d4;
    --blog-soft-gray: #f8fafc;
    --blog-light-gray: #f1f5f9;
    --blog-text-gray: #64748b;
    --blog-dark-gray: #334155;
    --blog-border-color: #e2e8f0;
    --blog-shadow-soft: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --blog-shadow-medium: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --blog-shadow-large: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --blog-border-radius: 12px;
    --blog-border-radius-sm: 8px;
    --blog-spacing-unit: 1.5rem;
}

/* Container and spacing */
.blog-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.mb-section {
    margin-bottom: calc(var(--blog-spacing-unit) * 2.5);
}

/* Typography improvements */
.blog-container h1,
.blog-container h2,
.blog-container h3,
.blog-container h4,
.blog-container h5 {
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 1rem;
    color: var(--blog-dark-gray);
}

.blog-container p {
    line-height: 1.7;
    margin-bottom: 1.2rem;
    color: var(--blog-text-gray);
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(139, 92, 246, 0.08) 100%);
    border-radius: var(--blog-border-radius);
    padding: 3rem 2rem;
    margin-bottom: var(--blog-spacing-unit);
    border: 1px solid var(--blog-border-color);
}

.hero-section h1 {
    color: var(--blog-primary-color);
    font-weight: 700;
    margin-bottom: 1.2rem;
}

.hero-section .lead {
    color: var(--blog-text-gray);
    font-size: 1.1rem;
    font-weight: 400;
    margin-bottom: 0;
}

/* Categories Section */
.categories-section {
    background: var(--blog-soft-gray);
    border: 1px solid var(--blog-border-color);
    border-radius: var(--blog-border-radius);
    padding: 1.5rem;
}

.categories-section h5 {
    color: var(--blog-primary-color);
    margin-bottom: 1rem;
    font-weight: 600;
}

.category-btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: var(--blog-border-radius-sm);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    transition: all 0.2s ease;
    border: 1px solid var(--blog-border-color);
    background: white;
    color: var(--blog-text-gray);
}

.category-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--blog-shadow-medium);
    color: var(--blog-primary-color);
    border-color: var(--blog-primary-color);
    text-decoration: none;
}

.category-btn.active {
    background: var(--blog-primary-color);
    color: white;
    border-color: var(--blog-primary-color);
    box-shadow: var(--blog-shadow-medium);
}

/* Section Titles */
.section-title {
    color: var(--blog-primary-color);
    font-weight: 700;
    font-size: 1.75rem;
    margin-bottom: 2rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--blog-border-color);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 60px;
    height: 2px;
    background: var(--blog-primary-color);
}

.section-title i {
    margin-right: 0.5rem;
    color: var(--blog-accent-color);
}

/* Featured Articles */
.featured-article {
    background: white;
    border: 1px solid var(--blog-border-color);
    border-radius: var(--blog-border-radius);
    box-shadow: var(--blog-shadow-soft);
    transition: all 0.3s ease;
    height: 100%;
    overflow: hidden;
}

.featured-article:hover {
    transform: translateY(-4px);
    box-shadow: var(--blog-shadow-large);
    border-color: var(--blog-primary-color);
}

.featured-article .card-body {
    padding: 1.5rem;
}

/* Article Cards */
.article-card {
    background: white;
    border: 1px solid var(--blog-border-color);
    border-radius: var(--blog-border-radius);
    box-shadow: var(--blog-shadow-soft);
    transition: all 0.3s ease;
    height: 100%;
    overflow: hidden;
}

.article-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--blog-shadow-large);
    border-color: var(--blog-accent-color);
}

.article-card .card-body {
    padding: 1.75rem;
}

/* Article Meta */
.article-meta {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.article-meta .badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.4rem 0.8rem;
    border-radius: var(--blog-border-radius-sm);
}

.article-meta .badge.bg-primary {
    background-color: var(--blog-primary-color) !important;
}

.article-meta .badge.bg-secondary {
    background-color: var(--blog-text-gray) !important;
}

.article-meta small {
    color: var(--blog-text-gray);
    font-size: 0.8rem;
    font-weight: 500;
}

/* Article Titles */
.article-title {
    color: var(--blog-dark-gray);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
}

.article-title:hover {
    color: var(--blog-primary-color);
    text-decoration: none;
}

/* Card Text */
.card-text {
    color: var(--blog-text-gray);
    line-height: 1.6;
    margin-bottom: 1.2rem;
}

/* Tags Container */
.tags-container {
    margin-bottom: 1rem;
}

.tags-container .badge {
    background-color: var(--blog-light-gray) !important;
    color: var(--blog-text-gray) !important;
    font-size: 0.7rem;
    font-weight: 500;
    padding: 0.3rem 0.6rem;
    margin-right: 0.4rem;
    border-radius: var(--blog-border-radius-sm);
    border: 1px solid var(--blog-border-color);
}

/* Buttons */
.btn {
    border-radius: var(--blog-border-radius-sm);
    font-weight: 600;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn-primary {
    background-color: var(--blog-primary-color);
    border-color: var(--blog-primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--blog-secondary-color);
    border-color: var(--blog-secondary-color);
    transform: translateY(-1px);
    box-shadow: var(--blog-shadow-medium);
}

.btn-outline-primary {
    color: var(--blog-primary-color);
    border-color: var(--blog-primary-color);
    background: white;
}

.btn-outline-primary:hover {
    background-color: var(--blog-primary-color);
    border-color: var(--blog-primary-color);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--blog-shadow-medium);
}

.btn-light {
    background-color: white;
    border-color: var(--blog-border-color);
    color: var(--blog-text-gray);
}

.btn-light:hover {
    background-color: var(--blog-soft-gray);
    border-color: var(--blog-primary-color);
    color: var(--blog-primary-color);
}

/* No Articles Section */
.no-articles {
    text-align: center;
    padding: 3rem 2rem;
    background: var(--blog-soft-gray);
    border-radius: var(--blog-border-radius);
    border: 1px solid var(--blog-border-color);
}

.no-articles i {
    color: var(--blog-text-gray);
    margin-bottom: 1.5rem;
}

.no-articles h3 {
    color: var(--blog-dark-gray);
    margin-bottom: 1rem;
}

.no-articles p {
    color: var(--blog-text-gray);
    margin-bottom: 1.5rem;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--blog-primary-color) 0%, var(--blog-secondary-color) 100%);
    border-radius: var(--blog-border-radius);
    padding: 3rem 2rem;
    box-shadow: var(--blog-shadow-large);
}

.cta-section h3 {
    color: white;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-section p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.cta-section .btn-light {
    background: white;
    color: var(--blog-primary-color);
    border: none;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
}

.cta-section .btn-light:hover {
    background: var(--blog-soft-gray);
    transform: translateY(-2px);
    box-shadow: var(--blog-shadow-medium);
}

/* Responsive Design */
@media (max-width: 768px) {
    .blog-container {
        padding: 1rem 0.5rem;
    }
    
    .hero-section {
        padding: 2rem 1rem;
    }
    
    .mb-section {
        margin-bottom: calc(var(--blog-spacing-unit) * 1.5);
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .categories-section {
        padding: 1rem;
    }
    
    .article-card .card-body,
    .featured-article .card-body {
        padding: 1.25rem;
    }
    
    .cta-section {
        padding: 2rem 1rem;
    }
}

/* Dark theme support */
[data-bs-theme="dark"] {
    --blog-soft-gray: #1e293b;
    --blog-light-gray: #334155;
    --blog-text-gray: #94a3b8;
    --blog-dark-gray: #f1f5f9;
    --blog-border-color: #334155;
}

[data-bs-theme="dark"] .featured-article,
[data-bs-theme="dark"] .article-card,
[data-bs-theme="dark"] .categories-section,
[data-bs-theme="dark"] .no-articles {
    background: #1e293b;
    border-color: #334155;
}

[data-bs-theme="dark"] .hero-section {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(139, 92, 246, 0.15) 100%);
    border-color: #334155;
}

[data-bs-theme="dark"] .btn-light {
    background: #334155;
    border-color: #475569;
    color: #94a3b8;
}

[data-bs-theme="dark"] .btn-light:hover {
    background: #475569;
    border-color: var(--blog-primary-color);
    color: var(--blog-primary-color);
}

[data-bs-theme="dark"] .category-btn {
    background: #1e293b;
    border-color: #334155;
    color: #94a3b8;
}

[data-bs-theme="dark"] .tags-container .badge {
    background-color: #334155 !important;
    color: #94a3b8 !important;
    border-color: #475569;
}