/* ============================================
   BLOG CSS - Mobile-First Approach
   ============================================ */

/* CSS Variables */
:root {
    --blog-primary: #e22721;
    --blog-text: #1f2937;
    --blog-text-light: #6b7280;
    --blog-bg: #ffffff;
    --blog-bg-alt: #f9fafb;
    --blog-border: #e5e7eb;
    --blog-radius: 16px;
    --blog-shadow: 0 4px 20px rgba(0,0,0,0.08);
    --blog-shadow-hover: 0 8px 30px rgba(0,0,0,0.12);
}

/* ============================================
   HERO SECTION
   ============================================ */
.blog-hero {
    background: linear-gradient(135deg, #fafafa 0%, #f3f4f6 100%);
    padding: 40px 0 60px;
    text-align: center;
}

.blog-hero-content {
    max-width: 700px;
    margin: 0 auto;
}

.blog-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: white;
    border: 1px solid var(--blog-border);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 500;
    color: #374151;
    margin-bottom: 20px;
}

.blog-badge svg {
    color: var(--blog-primary);
}

.blog-hero h1 {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.2;
    color: var(--blog-text);
    margin-bottom: 16px;
}

.blog-hero .text-primary {
    color: var(--blog-primary);
}

.blog-hero-subtitle {
    font-size: 16px;
    color: var(--blog-text-light);
    line-height: 1.6;
}

@media (min-width: 768px) {
    .blog-hero {
        padding: 60px 0 80px;
    }
    .blog-hero h1 {
        font-size: 48px;
    }
    .blog-hero-subtitle {
        font-size: 18px;
    }
}

/* ============================================
   FILTERS
   ============================================ */
.blog-filters {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 32px;
    padding-top: 32px;
}

.blog-search {
    position: relative;
    width: 100%;
}

.blog-search svg {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: #9ca3af;
}

.blog-search input {
    width: 100%;
    padding: 14px 16px 14px 48px;
    border: 2px solid var(--blog-border);
    border-radius: 12px;
    font-size: 16px;
    transition: all 0.2s ease;
}

.blog-search input:focus {
    outline: none;
    border-color: var(--blog-primary);
    box-shadow: 0 0 0 4px rgba(226, 39, 33, 0.1);
}

.blog-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.category-btn {
    padding: 10px 16px;
    border: 1px solid var(--blog-border);
    border-radius: 50px;
    background: white;
    font-size: 14px;
    font-weight: 500;
    color: var(--blog-text-light);
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.category-btn:hover {
    border-color: var(--blog-primary);
    color: var(--blog-primary);
}

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

@media (min-width: 768px) {
    .blog-filters {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
    .blog-search {
        max-width: 300px;
    }
    .blog-categories {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    .blog-categories::-webkit-scrollbar {
        display: none;
    }
}

/* ============================================
   FEATURED POST
   ============================================ */
.featured-post-section {
    margin-bottom: 48px;
}

.featured-card {
    display: flex;
    flex-direction: column;
    background: white;
    border-radius: var(--blog-radius);
    overflow: hidden;
    box-shadow: var(--blog-shadow);
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

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

.featured-image {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.featured-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

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

.featured-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    background: var(--blog-primary);
    color: white;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.featured-content {
    padding: 24px;
}

.post-category {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--cat-color, #6b7280);
    background: color-mix(in srgb, var(--cat-color, #6b7280) 10%, transparent);
    margin-bottom: 12px;
}

.featured-title {
    font-size: 24px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--blog-text);
    margin-bottom: 12px;
}

.featured-excerpt {
    font-size: 16px;
    color: var(--blog-text-light);
    line-height: 1.6;
    margin-bottom: 20px;
}

.post-meta {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    object-fit: cover;
}

.meta-info {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--blog-text-light);
}

.author-name {
    font-weight: 600;
    color: var(--blog-text);
}

.meta-separator {
    color: #d1d5db;
}

@media (min-width: 768px) {
    .featured-card {
        flex-direction: row;
    }
    .featured-image {
        flex: 0 0 50%;
        aspect-ratio: auto;
        min-height: 350px;
    }
    .featured-content {
        flex: 1;
        padding: 32px;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }
    .featured-title {
        font-size: 28px;
    }
}

@media (min-width: 1024px) {
    .featured-image {
        flex: 0 0 55%;
    }
    .featured-content {
        padding: 40px;
    }
    .featured-title {
        font-size: 32px;
    }
}

/* ============================================
   POSTS GRID
   ============================================ */
.blog-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 48px;
}

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

@media (min-width: 1024px) {
    .blog-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 32px;
    }
}

.post-card {
    display: flex;
    flex-direction: column;
    background: white;
    border-radius: var(--blog-radius);
    overflow: hidden;
    box-shadow: var(--blog-shadow);
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

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

.post-image {
    aspect-ratio: 16/10;
    overflow: hidden;
}

.post-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

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

.post-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.post-title {
    font-size: 18px;
    font-weight: 700;
    line-height: 1.4;
    color: var(--blog-text);
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-excerpt {
    font-size: 14px;
    color: var(--blog-text-light);
    line-height: 1.6;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.post-footer {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--blog-text-light);
    padding-top: 16px;
    border-top: 1px solid var(--blog-border);
}

.author-avatar-small {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    object-fit: cover;
}

.author-name-small {
    font-weight: 500;
    color: var(--blog-text);
}

.meta-dot {
    color: #d1d5db;
}

/* ============================================
   LOAD MORE & NO RESULTS
   ============================================ */
.load-more-section {
    display: flex;
    justify-content: center;
    margin-bottom: 48px;
}

.load-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: white;
    border: 2px solid var(--blog-border);
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    color: var(--blog-text);
    cursor: pointer;
    transition: all 0.2s ease;
}

.load-more-btn:hover {
    border-color: var(--blog-primary);
    color: var(--blog-primary);
}

.no-results {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    text-align: center;
}

.no-results svg {
    margin-bottom: 20px;
    opacity: 0.5;
}

.no-results h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--blog-text);
    margin-bottom: 8px;
}

.no-results p {
    color: var(--blog-text-light);
    margin-bottom: 20px;
}

.reset-filters-btn {
    padding: 12px 24px;
    background: var(--blog-primary);
    border: none;
    border-radius: 10px;
    color: white;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.reset-filters-btn:hover {
    background: #c91f1a;
}

/* ============================================
   NEWSLETTER CTA
   ============================================ */
.blog-newsletter {
    background: var(--blog-bg-alt);
    padding: 48px 0;
}

.newsletter-card {
    background: white;
    border-radius: var(--blog-radius);
    padding: 32px 24px;
    box-shadow: var(--blog-shadow);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 20px;
}

.newsletter-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--blog-primary);
}

.newsletter-content h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--blog-text);
    margin-bottom: 8px;
}

.newsletter-content p {
    font-size: 15px;
    color: var(--blog-text-light);
}

.newsletter-form-inline {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
    max-width: 400px;
}

.newsletter-form-inline input {
    flex: 1;
    padding: 14px 16px;
    border: 2px solid var(--blog-border);
    border-radius: 10px;
    font-size: 16px;
}

.newsletter-form-inline input:focus {
    outline: none;
    border-color: var(--blog-primary);
}

.newsletter-form-inline button {
    padding: 14px 24px;
    background: var(--blog-primary);
    border: none;
    border-radius: 10px;
    color: white;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease;
}

.newsletter-form-inline button:hover {
    background: #c91f1a;
}

@media (min-width: 768px) {
    .newsletter-card {
        flex-direction: row;
        text-align: left;
        padding: 40px;
    }
    .newsletter-content {
        flex: 1;
    }
    .newsletter-form-inline {
        flex-direction: row;
        width: auto;
        max-width: none;
    }
    .newsletter-form-inline input {
        width: 250px;
    }
}

/* ============================================
   SINGLE POST PAGE STYLES
   ============================================ */
.single-post-hero {
    background: linear-gradient(135deg, #fafafa 0%, #f3f4f6 100%);
    padding: 32px 0 48px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.breadcrumb a {
    color: var(--blog-text-light);
    text-decoration: none;
}

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

.breadcrumb-separator {
    color: #d1d5db;
}

.breadcrumb-current {
    color: var(--blog-text);
    font-weight: 500;
}

.single-post-header {
    max-width: 800px;
}

.single-post-header .post-category {
    margin-bottom: 16px;
}

.single-post-header h1 {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.2;
    color: var(--blog-text);
    margin-bottom: 20px;
}

.single-post-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
}

.single-post-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.single-post-author img {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
}

.author-details {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.author-details .name {
    font-weight: 600;
    color: var(--blog-text);
}

.author-details .role {
    font-size: 13px;
    color: var(--blog-text-light);
}

.single-post-date {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--blog-text-light);
}

@media (min-width: 768px) {
    .single-post-hero {
        padding: 48px 0 64px;
    }
    .single-post-header h1 {
        font-size: 44px;
    }
}

/* Single Post Content */
.single-post-content {
    padding: 48px 0;
}

.article-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.hero-figure {
    margin-bottom: 40px;
    border-radius: var(--blog-radius);
    overflow: hidden;
}

.hero-figure img {
    width: 100%;
    height: auto;
}

.hero-figure figcaption {
    padding: 12px 16px;
    background: var(--blog-bg-alt);
    font-size: 14px;
    color: var(--blog-text-light);
    text-align: center;
}

/* Article Typography */
.article-body {
    font-size: 18px;
    line-height: 1.8;
    color: var(--blog-text);
}

.article-body h2 {
    font-size: 28px;
    font-weight: 700;
    margin: 48px 0 20px;
    color: var(--blog-text);
}

.article-body h3 {
    font-size: 22px;
    font-weight: 600;
    margin: 36px 0 16px;
    color: var(--blog-text);
}

.article-body p {
    margin-bottom: 24px;
}

.article-body ul,
.article-body ol {
    margin: 24px 0;
    padding-left: 24px;
}

.article-body li {
    margin-bottom: 12px;
}

.article-body a {
    color: var(--blog-primary);
    text-decoration: underline;
}

.article-body a:hover {
    text-decoration: none;
}

.article-body blockquote {
    margin: 32px 0;
    padding: 24px 28px;
    background: var(--blog-bg-alt);
    border-left: 4px solid var(--blog-primary);
    border-radius: 0 12px 12px 0;
    font-size: 20px;
    font-style: italic;
    color: #374151;
}

.article-body img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    margin: 32px 0;
}

.article-body figure {
    margin: 32px 0;
}

.article-body figure img {
    margin: 0;
}

.article-body figcaption {
    margin-top: 12px;
    font-size: 14px;
    color: var(--blog-text-light);
    text-align: center;
}

/* Callout */
.callout {
    margin: 32px 0;
    padding: 24px;
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
    border-radius: 12px;
    border-left: 4px solid var(--blog-primary);
}

.callout h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--blog-primary);
    margin-bottom: 8px;
}

.callout p {
    margin-bottom: 0;
    font-size: 16px;
}

/* FAQ Section */
.faq-section {
    margin: 48px 0;
    padding: 32px;
    background: var(--blog-bg-alt);
    border-radius: var(--blog-radius);
}

.faq-section h2 {
    margin-top: 0;
}

.faq-item {
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--blog-border);
}

.faq-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.faq-item h3 {
    font-size: 18px;
    margin: 0 0 12px;
}

.faq-item p {
    margin: 0;
    font-size: 16px;
}

/* Author Box */
.author-box {
    margin: 48px 0;
    padding: 32px;
    background: var(--blog-bg-alt);
    border-radius: var(--blog-radius);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.author-box img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
}

.author-box-content h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--blog-text);
}

.author-box-content .author-role {
    font-size: 14px;
    color: var(--blog-text-light);
    margin-bottom: 12px;
}

.author-box-content p {
    font-size: 15px;
    line-height: 1.6;
    color: var(--blog-text-light);
    margin-bottom: 16px;
}

.author-social {
    display: flex;
    gap: 12px;
}

.author-social a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: 8px;
    color: var(--blog-text-light);
    transition: all 0.2s ease;
}

.author-social a:hover {
    background: var(--blog-primary);
    color: white;
}

@media (min-width: 640px) {
    .author-box {
        flex-direction: row;
        align-items: flex-start;
    }
    .author-box img {
        flex-shrink: 0;
    }
}

/* Share Buttons */
.share-section {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 24px 0;
    border-top: 1px solid var(--blog-border);
    border-bottom: 1px solid var(--blog-border);
    margin: 32px 0;
}

.share-section span {
    font-weight: 600;
    color: var(--blog-text);
}

.share-buttons {
    display: flex;
    gap: 8px;
}

.share-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--blog-bg-alt);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.share-btn svg {
    width: 20px;
    height: 20px;
}

/* Related Posts */
.related-posts-section {
    padding: 48px 0;
    background: var(--blog-bg-alt);
}

.related-posts-section h2 {
    font-size: 28px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 32px;
}

.related-posts-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

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

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

/* Table of Contents */
.toc {
    background: var(--blog-bg-alt);
    border-radius: 12px;
    padding: 24px;
    margin: 32px 0;
}

.toc h4 {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--blog-text-light);
    margin-bottom: 16px;
}

.toc ol {
    list-style: none;
    padding: 0;
    margin: 0;
    counter-reset: toc-counter;
}

.toc li {
    counter-increment: toc-counter;
    margin-bottom: 8px;
}

.toc li a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 12px;
    border-radius: 8px;
    text-decoration: none;
    color: var(--blog-text);
    font-size: 15px;
    transition: all 0.2s ease;
}

.toc li a::before {
    content: counter(toc-counter);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--blog-text-light);
}

.toc li a:hover {
    background: white;
    color: var(--blog-primary);
}

.toc li a:hover::before {
    background: var(--blog-primary);
    color: white;
}

/* Reading Progress Bar */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: var(--blog-primary);
    z-index: 9999;
    transition: width 0.1s ease;
}

/* Skip link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    padding: 8px 16px;
    background: var(--blog-text);
    color: white;
    z-index: 10000;
    text-decoration: none;
    font-weight: 500;
}

.skip-link:focus {
    top: 0;
}