/* Blog-specific styles for DARC OMNIVERSE */

/* Blog Hero Section */
.blog-hero {
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, hsl(var(--background-dark)), hsl(var(--background-light)));
    position: relative;
    overflow: hidden;
}

.blog-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 30% 20%, hsl(var(--primary-color) / 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 80%, hsl(var(--accent-color) / 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.blog-hero-content {
    text-align: center;
    position: relative;
    z-index: 2;
}

.blog-hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: var(--space-md);
    background: linear-gradient(135deg, hsl(var(--primary-color)), hsl(var(--accent-color)));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.blog-hero-subtitle {
    font-size: 1.25rem;
    color: hsl(var(--text-secondary));
    margin-bottom: var(--space-4xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Blog Search */
.blog-search {
    max-width: 500px;
    margin: 0 auto;
}

.search-container {
    position: relative;
    display: flex;
    background: hsl(var(--surface-color) / 0.8);
    backdrop-filter: blur(20px);
    border: 2px solid hsl(var(--border-color));
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
}

.search-container:focus-within {
    border-color: hsl(var(--primary-color));
    box-shadow: 0 0 0 3px hsl(var(--primary-color) / 0.1);
}

#blog-search {
    flex: 1;
    padding: var(--space-md) var(--space-lg);
    background: transparent;
    border: none;
    color: hsl(var(--text-primary));
    font-size: 1rem;
    outline: none;
}

#blog-search::placeholder {
    color: hsl(var(--text-muted));
}

.search-btn {
    padding: var(--space-md) var(--space-lg);
    background: linear-gradient(135deg, hsl(var(--primary-color)), hsl(var(--accent-color)));
    border: none;
    color: white;
    cursor: pointer;
    transition: var(--transition);
}

.search-btn:hover {
    background: linear-gradient(135deg, hsl(var(--accent-color)), hsl(var(--primary-color)));
}

/* Blog Filters */
.blog-filters {
    padding: var(--space-xl) 0;
    background: hsl(var(--background-light));
    border-bottom: 1px solid hsl(var(--border-color));
}

.filter-tabs {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.filter-tab {
    padding: var(--space-sm) var(--space-lg);
    background: transparent;
    border: 2px solid hsl(var(--border-color));
    border-radius: var(--border-radius);
    color: hsl(var(--text-secondary));
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.filter-tab:hover {
    border-color: hsl(var(--primary-color));
    color: hsl(var(--primary-color));
}

.filter-tab.active {
    background: linear-gradient(135deg, hsl(var(--primary-color)), hsl(var(--accent-color)));
    border-color: transparent;
    color: white;
}

/* Featured Article */
.featured-article {
    padding: var(--space-4xl) 0;
    background: hsl(var(--background-dark));
}

.featured-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
    background: hsl(var(--surface-color) / 0.8);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius-lg);
    border: 1px solid hsl(var(--border-color));
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.featured-image {
    position: relative;
    height: 400px;
    background: linear-gradient(135deg, hsl(var(--primary-color) / 0.1), hsl(var(--accent-color) / 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
}

.featured-placeholder {
    font-size: 6rem;
    color: hsl(var(--primary-color));
    opacity: 0.7;
}

.featured-badge {
    position: absolute;
    top: var(--space-lg);
    left: var(--space-lg);
    background: linear-gradient(135deg, hsl(var(--accent-color)), hsl(var(--primary-color)));
    color: white;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.featured-info {
    padding: var(--space-4xl);
}

.article-meta {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    font-size: 0.875rem;
}

.category {
    background: hsl(var(--primary-color));
    color: white;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius-sm);
    font-weight: 500;
}

.date {
    color: hsl(var(--text-muted));
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.featured-title {
    font-size: 2rem;
    font-weight: 700;
    color: hsl(var(--text-primary));
    margin-bottom: var(--space-lg);
    line-height: 1.2;
}

.featured-excerpt {
    color: hsl(var(--text-secondary));
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: var(--space-xl);
}

.featured-author {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.author-info h4 {
    color: hsl(var(--text-primary));
    margin-bottom: var(--space-xs);
    font-size: 1rem;
}

.author-info p {
    color: hsl(var(--text-muted));
    font-size: 0.875rem;
    margin: 0;
}

.read-more-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: linear-gradient(135deg, hsl(var(--primary-color)), hsl(var(--accent-color)));
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition);
}

.read-more-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Blog Grid */
.blog-grid-section {
    padding: var(--space-4xl) 0;
    background: hsl(var(--background-light));
}

.blog-grid-section .section-title {
    text-align: center;
    margin-bottom: var(--space-4xl);
    background: linear-gradient(135deg, hsl(var(--primary-color)), hsl(var(--accent-color)));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-4xl);
}

.blog-card {
    background: hsl(var(--surface-color) / 0.8);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius);
    border: 1px solid hsl(var(--border-color));
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow);
    opacity: 0;
    transform: translateY(30px);
}

.blog-card.show {
    opacity: 1;
    transform: translateY(0);
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.blog-card-image {
    height: 200px;
    background: linear-gradient(135deg, hsl(var(--primary-color) / 0.1), hsl(var(--accent-color) / 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.blog-card-placeholder {
    font-size: 3rem;
    color: hsl(var(--primary-color));
    opacity: 0.7;
}

.blog-card-category {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    background: hsl(var(--primary-color));
    color: white;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.blog-card-content {
    padding: var(--space-xl);
}

.blog-card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: hsl(var(--text-primary));
    margin-bottom: var(--space-sm);
    line-height: 1.3;
}

.blog-card-excerpt {
    color: hsl(var(--text-secondary));
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: var(--space-md);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    color: hsl(var(--text-muted));
    margin-bottom: var(--space-md);
}

.blog-card-date {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.blog-card-readtime {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.blog-card-link {
    color: hsl(var(--primary-color));
    text-decoration: none;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    transition: var(--transition);
}

.blog-card-link:hover {
    color: hsl(var(--accent-color));
}

.blog-card-link i {
    transition: var(--transition);
}

.blog-card-link:hover i {
    transform: translateX(3px);
}

/* Load More */
.load-more-container {
    text-align: center;
}

#load-more {
    padding: var(--space-md) var(--space-2xl);
    background: transparent;
    border: 2px solid hsl(var(--primary-color));
    color: hsl(var(--primary-color));
    border-radius: var(--border-radius);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
}

#load-more:hover {
    background: hsl(var(--primary-color));
    color: white;
    transform: translateY(-2px);
}

#load-more:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#load-more:disabled:hover {
    transform: none;
    background: transparent;
    color: hsl(var(--primary-color));
}

/* Newsletter Section */
.newsletter-section {
    padding: var(--space-4xl) 0;
    background: linear-gradient(135deg, hsl(var(--primary-color) / 0.1), hsl(var(--accent-color) / 0.1));
    border-top: 1px solid hsl(var(--border-color));
}

.newsletter-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
    background: hsl(var(--surface-color) / 0.8);
    backdrop-filter: blur(20px);
    padding: var(--space-4xl);
    border-radius: var(--border-radius-lg);
    border: 1px solid hsl(var(--border-color));
    box-shadow: var(--shadow);
}

.newsletter-info h3 {
    font-size: 2rem;
    color: hsl(var(--text-primary));
    margin-bottom: var(--space-md);
}

.newsletter-info p {
    color: hsl(var(--text-secondary));
    font-size: 1.1rem;
    margin-bottom: var(--space-xl);
}

.newsletter-form {
    margin-top: var(--space-xl);
}

.newsletter-input {
    display: flex;
    gap: var(--space-md);
    max-width: 400px;
    margin: 0 auto;
}

.newsletter-input input {
    flex: 1;
    padding: var(--space-md) var(--space-lg);
    border: 2px solid hsl(var(--border-color));
    border-radius: var(--border-radius);
    background: hsl(var(--background-light));
    color: hsl(var(--text-primary));
    font-size: 1rem;
    transition: var(--transition);
}

.newsletter-input input:focus {
    outline: none;
    border-color: hsl(var(--primary-color));
    box-shadow: 0 0 0 3px hsl(var(--primary-color) / 0.1);
}

.newsletter-input button {
    padding: var(--space-md) var(--space-lg);
    background: linear-gradient(135deg, hsl(var(--primary-color)), hsl(var(--accent-color)));
    border: none;
    border-radius: var(--border-radius);
    color: white;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.newsletter-input button:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

/* Article Modal */
.article-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    display: none;
}

.article-modal.active {
    display: block;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: hsl(var(--background-dark) / 0.9);
    backdrop-filter: blur(10px);
}

.modal-content {
    position: relative;
    max-width: 800px;
    max-height: 90vh;
    margin: 5vh auto;
    background: hsl(var(--surface-color));
    border-radius: var(--border-radius-lg);
    border: 1px solid hsl(var(--border-color));
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-close {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    width: 40px;
    height: 40px;
    background: hsl(var(--background-dark) / 0.8);
    border: none;
    border-radius: 50%;
    color: hsl(var(--text-primary));
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: var(--transition);
}

.modal-close:hover {
    background: hsl(var(--error-color));
    transform: scale(1.1);
}

.modal-body {
    padding: var(--space-4xl);
    max-height: calc(90vh - 2rem);
    overflow-y: auto;
}

.modal-body::-webkit-scrollbar {
    width: 8px;
}

.modal-body::-webkit-scrollbar-track {
    background: hsl(var(--background-light));
    border-radius: 4px;
}

.modal-body::-webkit-scrollbar-thumb {
    background: hsl(var(--border-color));
    border-radius: 4px;
}

.modal-body::-webkit-scrollbar-thumb:hover {
    background: hsl(var(--text-muted));
}

/* Article Content Styles */
.article-header {
    margin-bottom: var(--space-2xl);
    text-align: center;
}

.article-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: hsl(var(--text-primary));
    margin-bottom: var(--space-md);
    line-height: 1.2;
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
    font-size: 0.9rem;
    color: hsl(var(--text-muted));
}

.article-content {
    color: hsl(var(--text-secondary));
    font-size: 1.1rem;
    line-height: 1.7;
}

.article-content h2,
.article-content h3,
.article-content h4 {
    color: hsl(var(--text-primary));
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-md);
}

.article-content p {
    margin-bottom: var(--space-lg);
}

.article-content ul,
.article-content ol {
    margin-bottom: var(--space-lg);
    padding-left: var(--space-xl);
}

.article-content li {
    margin-bottom: var(--space-sm);
}

.article-content blockquote {
    background: hsl(var(--background-light));
    border-left: 4px solid hsl(var(--primary-color));
    padding: var(--space-lg);
    margin: var(--space-xl) 0;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    font-style: italic;
}

.article-content code {
    background: hsl(var(--background-light));
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius-sm);
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
}

.article-content pre {
    background: hsl(var(--background-light));
    padding: var(--space-lg);
    border-radius: var(--border-radius);
    overflow-x: auto;
    margin: var(--space-lg) 0;
}

.article-content pre code {
    background: none;
    padding: 0;
}

/* Loading States */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4xl);
    color: hsl(var(--text-muted));
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid hsl(var(--border-color));
    border-top: 3px solid hsl(var(--primary-color));
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: var(--space-md);
}

/* Empty States */
.empty-state {
    text-align: center;
    padding: var(--space-4xl);
    color: hsl(var(--text-muted));
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: var(--space-lg);
    opacity: 0.5;
}

.empty-state h3 {
    color: hsl(var(--text-secondary));
    margin-bottom: var(--space-md);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .blog-hero {
        padding: 6rem 0 3rem;
    }
    
    .blog-hero-title {
        font-size: 2.5rem;
    }
    
    .featured-content {
        grid-template-columns: 1fr;
    }
    
    .featured-image {
        height: 250px;
    }
    
    .featured-info {
        padding: var(--space-xl);
    }
    
    .featured-title {
        font-size: 1.5rem;
    }
    
    .filter-tabs {
        gap: var(--space-sm);
    }
    
    .filter-tab {
        padding: var(--space-xs) var(--space-md);
        font-size: 0.8rem;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .newsletter-input {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .modal-content {
        margin: 2vh 1rem;
        max-height: 96vh;
    }
    
    .modal-body {
        padding: var(--space-xl);
    }
    
    .article-title {
        font-size: 2rem;
    }
    
    .article-meta {
        flex-direction: column;
        gap: var(--space-sm);
    }
}

@media (max-width: 480px) {
    .blog-hero-title {
        font-size: 2rem;
    }
    
    .featured-title {
        font-size: 1.25rem;
    }
    
    .newsletter-content {
        padding: var(--space-xl);
    }
    
    .newsletter-info h3 {
        font-size: 1.5rem;
    }
    
    .article-title {
        font-size: 1.75rem;
    }
}

/* Search Highlight */
.search-highlight {
    background: hsl(var(--warning-color) / 0.3);
    color: hsl(var(--text-primary));
    padding: 0 2px;
    border-radius: 2px;
}

/* Category Colors */
.category.technology { background: hsl(var(--primary-color)); }
.category.design { background: hsl(var(--accent-color)); }
.category.education { background: hsl(var(--secondary-color)); }
.category.innovation { background: hsl(var(--success-color)); }
.category.tutorials { background: hsl(var(--warning-color)); }

.blog-card-category.technology { background: hsl(var(--primary-color)); }
.blog-card-category.design { background: hsl(var(--accent-color)); }
.blog-card-category.education { background: hsl(var(--secondary-color)); }
.blog-card-category.innovation { background: hsl(var(--success-color)); }
.blog-card-category.tutorials { background: hsl(var(--warning-color)); }

/* Scroll to Top for Modal */
.modal-scroll-top {
    position: absolute;
    bottom: var(--space-lg);
    right: var(--space-lg);
    width: 40px;
    height: 40px;
    background: hsl(var(--primary-color));
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 10;
}

.modal-scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.modal-scroll-top:hover {
    background: hsl(var(--accent-color));
    transform: translateY(-2px);
}