/* Blog Grid */
.blog-hero {
    padding: 80px 0 40px;
    text-align: center;
}

.blog-hero h2 {
    font-size: 48px;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: -1.5px;
    margin-bottom: 12px;
}

.blog-hero p {
    font-size: 18px;
    color: var(--light-text);
    max-width: 600px;
    margin: 0 auto;
}

.blog-badge {
    display: inline-block;
    background: var(--primary-soft);
    color: var(--primary-color);
    padding: 6px 16px;
    border-radius: 9999px;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
}

.blog-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 0 120px;
}

@media (min-width: 640px) {
    .blog-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
    .blog-grid { grid-template-columns: repeat(3, 1fr); }
}

/* Blog Card */
.blog-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    border: 1px solid rgba(0, 0, 0, 0.02);
    transition: transform 0.3s cubic-bezier(0.23, 1, 0.32, 1), box-shadow 0.3s cubic-bezier(0.23, 1, 0.32, 1), border-color 0.3s;
    text-decoration: none;
    color: inherit;
    display: block;
}

.blog-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.1);
    border-color: var(--accent-color);
}

.blog-card-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    display: block;
}

.blog-card-body {
    padding: 24px;
}

.blog-card-category {
    display: inline-block;
    background: var(--primary-soft);
    color: var(--primary-color);
    padding: 4px 12px;
    border-radius: 9999px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.blog-card-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 10px;
    font-size: 13px;
    color: var(--light-text);
}

.blog-card-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-color);
    margin: 12px 0 8px;
    line-height: 1.3;
}

.blog-card-excerpt {
    font-size: 15px;
    color: var(--light-text);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin: 0;
}

/* Article Page */
.article-wrapper {
    padding: 40px 0 120px;
    max-width: 768px;
    margin: 0 auto;
}

.back-link {
    display: inline-block;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    margin-bottom: 32px;
    transition: opacity 0.2s;
}

.back-link:hover {
    opacity: 0.7;
}

.article-header {
    margin-bottom: 32px;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.article-meta-item {
    font-size: 14px;
    color: var(--light-text);
}

.article-title {
    font-size: 40px;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: -1px;
    line-height: 1.15;
    margin: 0;
}

.article-cover {
    width: 100%;
    aspect-ratio: 21 / 9;
    object-fit: cover;
    border-radius: 20px;
    margin-bottom: 40px;
}

/* Table of Contents */
.toc {
    background: var(--white);
    border-left: 4px solid var(--primary-color);
    border-radius: 0 16px 16px 0;
    padding: 24px 28px;
    margin-bottom: 40px;
    box-shadow: var(--card-shadow);
}

.toc-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0 0 12px;
}

.toc-list {
    margin: 0;
    padding-left: 20px;
}

.toc-list li {
    margin-bottom: 6px;
}

.toc-list a {
    color: var(--text-color);
    text-decoration: none;
    font-size: 15px;
    transition: color 0.2s;
}

.toc-list a:hover {
    color: var(--primary-color);
}

/* Article Content */
.article-content {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-color);
}

.article-content h2 {
    color: var(--primary-color);
    font-size: 28px;
    font-weight: 700;
    margin-top: 48px;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.article-content h3 {
    color: var(--primary-color);
    font-size: 22px;
    font-weight: 600;
    margin-top: 32px;
    margin-bottom: 12px;
}

.article-content p {
    margin-bottom: 20px;
}

.article-content ul,
.article-content ol {
    margin-bottom: 20px;
    padding-left: 24px;
}

.article-content li {
    margin-bottom: 8px;
}

.article-content blockquote {
    border-left: 4px solid var(--accent-color);
    margin: 24px 0;
    padding: 16px 24px;
    background: var(--primary-soft);
    border-radius: 0 12px 12px 0;
    font-style: italic;
    color: var(--light-text);
}

.article-content a {
    color: var(--primary-color);
    text-decoration: underline;
    text-underline-offset: 2px;
}

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

/* App Promo */
.app-promo {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: 20px;
    padding: 40px;
    margin: 48px 0;
    text-align: center;
    color: var(--white);
}

.app-promo-title {
    font-size: 22px;
    font-weight: 700;
    margin: 0 0 8px;
}

.app-promo-text {
    font-size: 16px;
    opacity: 0.9;
    margin: 0 0 20px;
}

.app-promo-btn {
    display: inline-block;
    background: var(--white);
    color: var(--primary-color);
    padding: 14px 32px;
    border-radius: 14px;
    font-weight: 700;
    font-size: 16px;
    text-decoration: none;
    transition: all 0.3s;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.app-promo-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

/* Related Posts */
.related-posts {
    margin-top: 48px;
    padding-top: 40px;
    border-top: 2px solid rgba(0, 0, 0, 0.06);
}

.related-posts h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0 0 24px;
}

.related-posts-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 640px) {
    .related-posts-grid { grid-template-columns: repeat(2, 1fr); }
}

.related-post-card {
    display: flex;
    flex-direction: column;
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    border: 1px solid rgba(0, 0, 0, 0.02);
    text-decoration: none;
    color: inherit;
    transition: transform 0.3s cubic-bezier(0.23, 1, 0.32, 1), box-shadow 0.3s cubic-bezier(0.23, 1, 0.32, 1), border-color 0.3s;
}

.related-post-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px -6px rgba(0, 0, 0, 0.1);
    border-color: var(--accent-color);
}

.related-post-card img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.related-post-card-body {
    padding: 16px 20px 20px;
}

.related-post-card-body .blog-card-category {
    margin-bottom: 8px;
}

.related-post-card-body h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-color);
    margin: 8px 0 0;
    line-height: 1.3;
}

/* Responsive */
@media (max-width: 900px) {
    .blog-hero h2 {
        font-size: 36px;
    }

    .article-title {
        font-size: 32px;
    }

    .article-content {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .blog-hero h2 {
        font-size: 28px;
    }

    .article-title {
        font-size: 26px;
    }

    .article-wrapper {
        padding: 24px 0 80px;
    }

    .app-promo {
        padding: 28px 20px;
    }
}