/* ============================================================
   PROMPT MINDS — BLOG SYSTEM STYLES
   Uses existing CSS variables from main.css for consistency
   ============================================================ */

/* ─── BLOG HERO BANNER ─── */
.blog-hero {
    text-align: center;
    padding: 60px 20px 40px;
    position: relative;
}

.blog-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(27, 152, 224, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
    pointer-events: none;
}

.blog-hero-title {
    font-family: 'Inter', 'Poppins', sans-serif;
    font-size: 2.8rem;
    font-weight: 800;
    letter-spacing: -1.5px;
    margin-bottom: 10px;
    position: relative;
    z-index: 1;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.blog-hero-sub {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto 30px;
    position: relative;
    z-index: 1;
    line-height: 1.6;
}

/* ─── SEARCH BAR ─── */
.blog-search-wrap {
    max-width: 520px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.blog-search-wrap input {
    width: 100%;
    padding: 14px 20px 14px 48px;
    border: 1.5px solid var(--border-color);
    border-radius: 14px;
    background: var(--card-bg);
    color: var(--color-text);
    font-size: 0.95rem;
    font-family: 'Poppins', sans-serif;
    outline: none;
    transition: all 0.3s ease;
    backdrop-filter: blur(12px);
}

.blog-search-wrap input::placeholder {
    color: var(--color-text-muted);
}

.blog-search-wrap input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(27, 152, 224, 0.12);
}

.blog-search-wrap .search-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    font-size: 1rem;
    pointer-events: none;
}

/* ─── CATEGORY FILTER PILLS ─── */
.blog-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    padding: 0 20px 30px;
    max-width: 900px;
    margin: 0 auto;
}

.category-pill {
    padding: 8px 20px;
    border-radius: 50px;
    border: 1.5px solid var(--border-color);
    background: transparent;
    color: var(--color-text-muted);
    font-size: 0.82rem;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: capitalize;
    letter-spacing: 0.3px;
}

.category-pill:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.category-pill.active {
    background: linear-gradient(135deg, var(--color-primary), #4fc3f7);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 4px 15px rgba(27, 152, 224, 0.35);
}

/* ─── BLOG CARD GRID ─── */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px 50px;
}

.blog-card {
    background: var(--card-bg);
    border-radius: 18px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    cursor: pointer;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    backdrop-filter: blur(10px);
}

.blog-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 50px rgba(27, 152, 224, 0.15), 0 0 0 1px rgba(27, 152, 224, 0.2);
    border-color: rgba(27, 152, 224, 0.3);
}

html[data-theme='light'] .blog-card:hover {
    box-shadow: 0 20px 50px rgba(0, 86, 179, 0.12);
}

.blog-card-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    position: relative;
}

.blog-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.blog-card:hover .blog-card-image img {
    transform: scale(1.06);
}

.blog-card-image .card-category-badge {
    position: absolute;
    top: 14px;
    left: 14px;
    padding: 5px 14px;
    border-radius: 50px;
    background: linear-gradient(135deg, var(--color-primary), #4fc3f7);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    backdrop-filter: blur(8px);
}

.blog-card-body {
    padding: 22px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.blog-card-title {
    font-family: 'Inter', sans-serif;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 10px;
    line-height: 1.35;
    letter-spacing: -0.3px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.3s ease;
}

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

.blog-card-excerpt {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    line-height: 1.55;
    margin-bottom: 18px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.blog-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    font-size: 0.78rem;
    color: var(--color-text-muted);
}

.blog-card-author {
    display: flex;
    align-items: center;
    gap: 8px;
}

.blog-card-author img {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1.5px solid var(--border-color);
}

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

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

.blog-card-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.blog-card-meta i {
    font-size: 0.72rem;
    opacity: 0.7;
}

/* ─── LOAD MORE BUTTON ─── */
.blog-load-more {
    text-align: center;
    padding: 10px 20px 60px;
}

.blog-load-more button {
    padding: 14px 40px;
    border-radius: 50px;
    border: 1.5px solid var(--color-primary);
    background: transparent;
    color: var(--color-primary);
    font-size: 0.92rem;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 0.3px;
}

.blog-load-more button:hover {
    background: var(--color-primary);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(27, 152, 224, 0.35);
}

/* ─── EMPTY STATE ─── */
.blog-empty {
    text-align: center;
    padding: 80px 20px;
    color: var(--color-text-muted);
}

.blog-empty i {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.4;
    display: block;
}

.blog-empty p {
    font-size: 1.05rem;
}

/* ============================================================
   SINGLE POST PAGE STYLES
   ============================================================ */

/* ─── BREADCRUMBS ─── */
.post-breadcrumbs {
    max-width: 860px;
    margin: 0 auto;
    padding: 24px 20px 0;
    font-size: 0.82rem;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
}

.post-breadcrumbs a {
    color: var(--color-primary);
    text-decoration: none;
    transition: opacity 0.2s;
}

.post-breadcrumbs a:hover {
    opacity: 0.8;
    text-decoration: underline;
}

.post-breadcrumbs .sep {
    opacity: 0.4;
}

/* ─── POST HEADER ─── */
.post-header {
    max-width: 860px;
    margin: 0 auto;
    padding: 30px 20px 0;
    text-align: center;
}

.post-category-badge {
    display: inline-block;
    padding: 6px 18px;
    border-radius: 50px;
    background: linear-gradient(135deg, var(--color-primary), #4fc3f7);
    color: #fff;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 18px;
    text-decoration: none;
    transition: transform 0.2s;
}

.post-category-badge:hover {
    transform: scale(1.05);
}

.post-title {
    font-family: 'Inter', sans-serif;
    font-size: 2.6rem;
    font-weight: 800;
    color: var(--color-text);
    line-height: 1.2;
    letter-spacing: -1.5px;
    margin-bottom: 20px;
}

.post-meta-row {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 30px;
}

.post-meta-row .author-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.post-meta-row .author-info img {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid var(--color-primary);
}

.post-meta-row .author-info strong {
    color: var(--color-text);
}

.post-meta-row .meta-item {
    display: flex;
    align-items: center;
    gap: 5px;
}

.post-meta-row .meta-divider {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--color-text-muted);
    opacity: 0.4;
}

/* ─── FEATURED IMAGE ─── */
.post-featured-image {
    max-width: 960px;
    margin: 0 auto 40px;
    padding: 0 20px;
}

.post-featured-image img {
    width: 100%;
    border-radius: 18px;
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

html[data-theme='light'] .post-featured-image img {
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

/* ─── POST LAYOUT (Content + TOC Sidebar) ─── */
.post-layout {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 40px;
    align-items: start;
}

/* ─── POST CONTENT ─── */
.post-content {
    max-width: 780px;
    font-family: 'Poppins', sans-serif;
    font-size: 1.08rem;
    line-height: 1.8;
    color: var(--color-text);
}

.post-content h2 {
    font-family: 'Inter', sans-serif;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text);
    margin: 40px 0 16px;
    letter-spacing: -0.5px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--border-color);
}

.post-content h3 {
    font-family: 'Inter', sans-serif;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--color-text);
    margin: 30px 0 12px;
    letter-spacing: -0.3px;
}

.post-content h4 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-text);
    margin: 24px 0 10px;
}

.post-content p {
    margin-bottom: 18px;
}

.post-content a {
    color: var(--color-primary);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: opacity 0.2s;
}

.post-content a:hover {
    opacity: 0.8;
}

.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    margin: 20px 0;
    border: 1px solid var(--border-color);
}

.post-content ul,
.post-content ol {
    padding-left: 28px;
    margin-bottom: 18px;
}

.post-content li {
    margin-bottom: 8px;
    line-height: 1.7;
}

.post-content blockquote {
    border-left: 4px solid var(--color-primary);
    margin: 24px 0;
    padding: 16px 24px;
    background: rgba(27, 152, 224, 0.06);
    border-radius: 0 12px 12px 0;
    font-style: italic;
    color: var(--color-text-muted);
}

html[data-theme='light'] .post-content blockquote {
    background: rgba(27, 152, 224, 0.05);
}

.post-content pre {
    background: #1a1a2e;
    border: 1px solid rgba(58, 71, 106, 0.3);
    border-radius: 12px;
    padding: 20px;
    overflow-x: auto;
    margin: 20px 0;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.88rem;
    line-height: 1.6;
}

html[data-theme='light'] .post-content pre {
    background: #f5f5f7;
    border-color: #dee2e6;
    color: #212529;
}

.post-content code {
    font-family: 'JetBrains Mono', monospace;
    background: rgba(27, 152, 224, 0.1);
    padding: 2px 7px;
    border-radius: 5px;
    font-size: 0.88em;
    color: var(--color-primary);
}

.post-content pre code {
    background: transparent;
    padding: 0;
    color: #e0e0e0;
}

html[data-theme='light'] .post-content pre code {
    color: #212529;
}

.post-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.post-content th,
.post-content td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.92rem;
}

.post-content th {
    background: rgba(27, 152, 224, 0.08);
    font-weight: 600;
    color: var(--color-text);
}

.post-content hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 30px 0;
}

/* ─── YouTube Embed ─── */
.post-youtube-embed {
    max-width: 780px;
    margin: 30px 0;
    aspect-ratio: 16 / 9;
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.post-youtube-embed iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* ─── TABLE OF CONTENTS (Sidebar) ─── */
.post-toc {
    position: sticky;
    top: 100px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    backdrop-filter: blur(12px);
}

.post-toc-title {
    font-family: 'Inter', sans-serif;
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--color-text-muted);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.post-toc-title i {
    color: var(--color-primary);
}

.post-toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.post-toc-list li {
    margin-bottom: 2px;
}

.post-toc-list a {
    display: block;
    padding: 7px 12px;
    border-radius: 8px;
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: 500;
    line-height: 1.4;
    transition: all 0.2s ease;
    border-left: 2px solid transparent;
}

.post-toc-list a:hover {
    color: var(--color-primary);
    background: rgba(27, 152, 224, 0.06);
}

.post-toc-list a.active {
    color: var(--color-primary);
    background: rgba(27, 152, 224, 0.08);
    border-left-color: var(--color-primary);
    font-weight: 600;
}

.post-toc-list .toc-h3 {
    padding-left: 24px;
    font-size: 0.78rem;
}

/* ─── SHARE BUTTONS ─── */
.post-share-section {
    max-width: 780px;
    margin: 40px 0 0;
    padding: 28px 0;
    border-top: 1px solid var(--border-color);
}

.post-share-title {
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.share-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.share-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    color: var(--color-text);
    font-size: 0.82rem;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
}

.share-btn:hover {
    transform: translateY(-2px);
}

.share-btn.whatsapp:hover {
    background: #25D366;
    color: #fff;
    border-color: #25D366;
}

.share-btn.twitter:hover {
    background: #1DA1F2;
    color: #fff;
    border-color: #1DA1F2;
}

.share-btn.facebook:hover {
    background: #1877F2;
    color: #fff;
    border-color: #1877F2;
}

.share-btn.linkedin:hover {
    background: #0A66C2;
    color: #fff;
    border-color: #0A66C2;
}

.share-btn.copy-link:hover {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

/* ─── AUTHOR BIO CARD ─── */
.post-author-card {
    max-width: 780px;
    margin: 40px 0;
    padding: 28px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    display: flex;
    align-items: center;
    gap: 22px;
    backdrop-filter: blur(10px);
}

.post-author-card img {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    border: 3px solid var(--color-primary);
    box-shadow: 0 0 20px rgba(27, 152, 224, 0.2);
    flex-shrink: 0;
}

.author-card-info h4 {
    font-family: 'Inter', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 4px;
}

.author-card-info .author-role {
    font-size: 0.82rem;
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: 8px;
}

.author-card-info p {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    line-height: 1.55;
}

/* ─── RELATED POSTS ─── */
.related-posts-section {
    max-width: 1100px;
    margin: 0 auto;
    padding: 50px 20px 60px;
}

.related-posts-title {
    font-family: 'Inter', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 28px;
    text-align: center;
    letter-spacing: -0.5px;
}

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

/* ─── POST NAVIGATION (Prev/Next) ─── */
.post-nav-section {
    max-width: 780px;
    margin: 0 auto;
    padding: 0 20px 50px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.post-nav-link {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 20px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.post-nav-link:hover {
    border-color: var(--color-primary);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(27, 152, 224, 0.12);
}

.post-nav-link .nav-label {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-primary);
}

.post-nav-link .nav-title {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.35;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-nav-link.next {
    text-align: right;
}

/* ─── BLOG LOADING SKELETON ─── */
.blog-skeleton-card {
    background: var(--card-bg);
    border-radius: 18px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.skeleton-img {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: linear-gradient(110deg, var(--bg-tertiary) 8%, var(--bg-secondary) 18%, var(--bg-tertiary) 33%);
    background-size: 200% 100%;
    animation: skeletonShimmer 1.5s ease-in-out infinite;
}

.skeleton-body {
    padding: 22px;
}

.skeleton-line {
    height: 14px;
    border-radius: 7px;
    background: linear-gradient(110deg, var(--bg-tertiary) 8%, var(--bg-secondary) 18%, var(--bg-tertiary) 33%);
    background-size: 200% 100%;
    animation: skeletonShimmer 1.5s ease-in-out infinite;
    margin-bottom: 12px;
}

.skeleton-line.w75 { width: 75%; }
.skeleton-line.w50 { width: 50%; }
.skeleton-line.w90 { width: 90%; }

@keyframes skeletonShimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ─── BLOG FOOTER (Back to blog link) ─── */
.blog-back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-primary);
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 600;
    padding: 10px 0;
    transition: gap 0.3s ease;
}

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

/* ─── RESPONSIVE ─── */
@media (max-width: 1024px) {
    .post-layout {
        grid-template-columns: 1fr;
    }

    .post-toc {
        position: relative;
        top: 0;
        order: -1;
        margin-bottom: 30px;
    }
}

@media (max-width: 992px) {
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 22px;
    }

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

    .blog-hero-title {
        font-size: 2.2rem;
    }

    .post-title {
        font-size: 2rem;
    }
}

@media (max-width: 600px) {
    .blog-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 0 16px 40px;
    }

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

    .blog-hero {
        padding: 40px 16px 30px;
    }

    .blog-hero-title {
        font-size: 1.8rem;
    }

    .post-title {
        font-size: 1.6rem;
        letter-spacing: -0.8px;
    }

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

    .post-content h2 {
        font-size: 1.4rem;
    }

    .post-content h3 {
        font-size: 1.15rem;
    }

    .post-author-card {
        flex-direction: column;
        text-align: center;
    }

    .post-nav-section {
        grid-template-columns: 1fr;
    }

    .post-meta-row {
        gap: 12px;
    }

    .share-buttons {
        justify-content: center;
    }

    .blog-categories {
        padding: 0 16px 24px;
    }

    .category-pill {
        padding: 6px 14px;
        font-size: 0.75rem;
    }
}