/* ========================================
   Blog Styles
   ======================================== */

/* Blog Hero */
.blog-hero {
    padding: 140px 0 60px;
    text-align: center;
}

.blog-hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--text-white) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.blog-hero p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Blog Grid */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    padding-bottom: 80px;
}

/* Blog Card */
.blog-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    border-color: var(--border-light);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.blog-card-image {
    position: relative;
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(0, 168, 204, 0.1));
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.blog-card-image svg {
    width: 48px;
    height: 48px;
    color: var(--primary);
    opacity: 0.5;
}

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

.blog-card-category {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--primary);
    color: var(--bg-dark);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.blog-card-content {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.blog-card-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 12px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.blog-card-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.blog-card-meta svg {
    width: 14px;
    height: 14px;
}

.blog-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    line-height: 1.4;
}

.blog-card h3 a {
    color: var(--text-white);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.blog-card h3 a:hover {
    color: var(--primary);
}

.blog-card-excerpt {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 20px;
    flex: 1;
}

.blog-card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: gap var(--transition-fast);
}

.blog-card-link:hover {
    gap: 12px;
}

.blog-card-link svg {
    width: 16px;
    height: 16px;
}

/* Featured Post */
.blog-featured {
    margin-bottom: 48px;
}

.blog-featured-card {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 0;
    background: var(--bg-card);
    border: 2px solid var(--primary);
    border-radius: 24px;
    overflow: hidden;
}

.blog-featured-image {
    aspect-ratio: 16/10;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(0, 168, 204, 0.1));
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.blog-featured-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.blog-featured-image svg {
    width: 80px;
    height: 80px;
    color: var(--primary);
    opacity: 0.5;
}

.blog-featured-content {
    padding: 48px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.blog-featured-badge {
    display: inline-block;
    background: var(--primary);
    color: var(--bg-dark);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
    width: fit-content;
}

.blog-featured-content h2 {
    font-size: 2rem;
    margin-bottom: 16px;
    line-height: 1.3;
}

.blog-featured-content h2 a {
    color: var(--text-white);
    text-decoration: none;
}

.blog-featured-content h2 a:hover {
    color: var(--primary);
}

.blog-featured-excerpt {
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 24px;
}

/* Blog Post Page */
.blog-post {
    padding: 140px 0 80px;
}

.blog-post-header {
    max-width: 800px;
    margin: 0 auto 48px;
    text-align: center;
}

.blog-post-category {
    display: inline-block;
    background: var(--primary-glow);
    color: var(--primary);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
}

.blog-post-header h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: 20px;
    line-height: 1.3;
}

.blog-post-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.blog-post-meta span {
    display: flex;
    align-items: center;
    gap: 8px;
}

.blog-post-meta svg {
    width: 18px;
    height: 18px;
    color: var(--primary);
}

/* Blog Content */
.blog-content {
    max-width: 800px;
    margin: 0 auto;
}

.blog-content h2 {
    font-size: 1.75rem;
    margin: 48px 0 20px;
    color: var(--text-white);
}

.blog-content h3 {
    font-size: 1.35rem;
    margin: 36px 0 16px;
    color: var(--text-white);
}

.blog-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 24px;
    color: var(--text-light);
}

.blog-content ul,
.blog-content ol {
    margin: 24px 0;
    padding-left: 32px;
}

.blog-content li {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 12px;
    color: var(--text-light);
}

.blog-content blockquote {
    border-left: 4px solid var(--primary);
    padding: 20px 24px;
    margin: 32px 0;
    background: var(--bg-card);
    border-radius: 0 8px 8px 0;
}

.blog-content blockquote p {
    margin: 0;
    font-style: italic;
    color: var(--text-muted);
}

.blog-content code {
    background: var(--bg-input);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.9em;
    color: var(--primary);
}

.blog-content pre {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    margin: 32px 0;
    overflow-x: auto;
}

.blog-content pre code {
    background: none;
    padding: 0;
    font-size: 0.9rem;
    color: var(--text-light);
}

.blog-content a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.blog-content a:hover {
    color: var(--primary-light);
}

/* Formula highlight box */
.formula-highlight {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(0, 212, 255, 0.05));
    border: 1px solid var(--primary);
    border-radius: 12px;
    padding: 24px 32px;
    margin: 32px 0;
    text-align: center;
}

.formula-highlight .formula-math {
    font-size: 1.5rem;
    color: var(--primary);
    font-family: var(--font-mono);
}

/* Tip/Note boxes */
.blog-tip {
    background: var(--bg-card);
    border-left: 4px solid var(--success);
    border-radius: 0 8px 8px 0;
    padding: 20px 24px;
    margin: 32px 0;
}

.blog-tip-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    color: var(--success);
    margin-bottom: 8px;
}

.blog-tip p {
    margin: 0;
    color: var(--text-muted);
}

/* CTA Box */
.blog-cta {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(0, 212, 255, 0.05));
    border: 2px solid var(--primary);
    border-radius: 16px;
    padding: 32px;
    margin: 48px 0;
    text-align: center;
}

.blog-cta h3 {
    margin: 0 0 12px;
    font-size: 1.5rem;
}

.blog-cta p {
    margin: 0 0 20px;
    color: var(--text-muted);
}

/* Related Posts */
.related-posts {
    border-top: 1px solid var(--border-color);
    padding-top: 48px;
    margin-top: 64px;
}

.related-posts h3 {
    text-align: center;
    margin-bottom: 32px;
    font-size: 1.5rem;
}

.related-posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* Categories */
.blog-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-bottom: 48px;
}

.blog-category-tag {
    display: inline-flex;
    align-items: center;
    padding: 8px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    color: var(--text-light);
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.blog-category-tag:hover,
.blog-category-tag.active {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-glow);
}

/* Responsive */
@media (max-width: 1200px) {
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .blog-featured-card {
        grid-template-columns: 1fr;
    }

    .blog-featured-content {
        padding: 32px;
    }

    .related-posts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .blog-grid {
        grid-template-columns: 1fr;
    }

    .blog-post-meta {
        flex-direction: column;
        gap: 12px;
    }

    .related-posts-grid {
        grid-template-columns: 1fr;
    }

    .blog-content h2 {
        font-size: 1.5rem;
    }

    .blog-content p,
    .blog-content li {
        font-size: 1rem;
    }
}

/* Blog Post Hero Image */
.blog-post-hero-image {
    max-width: 900px;
    margin: 0 auto 48px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.blog-post-hero-image img {
    width: 100%;
    height: auto;
    display: block;
}