/* ===== PAGE HEADER ===== */
.page-header {
    background: linear-gradient(135deg, #F5F3FF 0%, #EDE9FE 100%);
    border-bottom: 1px solid var(--border);
    padding: 5rem 0 4rem;
}

.page-header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
}

.page-title {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 1rem 0;
    line-height: 1.2;
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 2rem;
    transition: var(--transition);
    text-decoration: none;
}

.back-link:hover {
    color: var(--primary);
    gap: 0.8rem;
}

/* ===== BLOG SECTION ===== */
.blog-section { padding: 5rem 0; }

.blog-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===== FEATURED POST ===== */
.featured-post {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    padding: 2.5rem;
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    margin-bottom: 4rem;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.featured-post::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--gradient-main);
}

.featured-post-img {
    border-radius: var(--radius);
    overflow: hidden;
    height: 280px;
}

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

.thumb-placeholder {
    width: 100%;
    height: 100%;
    background: var(--muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--border);
    min-height: 180px;
}

.featured-label {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--primary);
    margin-bottom: 0.8rem;
}

.post-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--primary);
    margin-bottom: 0.5rem;
    padding: 0.2rem 0.8rem;
    background: var(--primary-light);
    border-radius: 50px;
}

.featured-post-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0.5rem 0 0.8rem;
    line-height: 1.4;
}

.featured-post-title a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

.featured-post-title a:hover { color: var(--primary); }

.featured-post-excerpt {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 1.2rem;
}

.post-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    align-items: center;
}

.post-meta i {
    color: var(--primary);
    margin-right: 0.3rem;
}

.btn-sm {
    padding: 0.6rem 1.3rem;
    font-size: 0.88rem;
}

/* ===== FILTER ===== */
.filter-btns {
    display: flex;
    gap: 0.6rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1.2rem;
    background: white;
    border: 1px solid var(--border);
    border-radius: 50px;
    color: var(--text-secondary);
    font-size: 0.88rem;
    font-weight: 500;
    transition: var(--transition);
    text-decoration: none;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

/* ===== POSTS GRID ===== */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.8rem;
}

.post-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.post-card:hover {
    border-color: var(--primary-soft);
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.post-thumb {
    height: 200px;
    overflow: hidden;
}

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

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

.post-body {
    padding: 1.4rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.post-title {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0.4rem 0 0.5rem;
    line-height: 1.4;
}

.post-excerpt {
    color: var(--text-secondary);
    font-size: 0.88rem;
    line-height: 1.7;
    flex: 1;
    margin-bottom: 1rem;
}

.post-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.post-tags {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.post-tag {
    padding: 0.2rem 0.6rem;
    background: var(--muted);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 0.72rem;
    color: var(--primary);
    font-weight: 500;
}

/* ===== BLOG DETAIL ===== */
.blog-detail-section { padding: 4rem 0 6rem; }

.detail-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 2rem;
}

.detail-thumb {
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 3rem;
    max-height: 450px;
}

.detail-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.detail-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* ===== BLOG CONTENT ===== */
.detail-content {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.9;
    margin-bottom: 4rem;
    font-family: var(--font-bengali), var(--font-body);
}

.detail-content p { margin-bottom: 1.3rem; }

.detail-content h2,
.detail-content h3 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    margin: 2rem 0 1rem;
}

.detail-content h2 { font-size: 1.6rem; }
.detail-content h3 { font-size: 1.3rem; }

.detail-content ul,
.detail-content ol {
    padding-left: 1.5rem;
    margin-bottom: 1.3rem;
}

.detail-content li { margin-bottom: 0.5rem; }

.detail-content code {
    background: var(--muted);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.9rem;
    color: var(--primary);
}

.detail-content pre {
    background: var(--text-primary);
    color: #e2e8f0;
    padding: 1.5rem;
    border-radius: var(--radius);
    overflow-x: auto;
    margin-bottom: 1.3rem;
}

.detail-content blockquote {
    border-left: 4px solid var(--primary);
    padding: 1rem 1.5rem;
    background: var(--primary-light);
    border-radius: 0 var(--radius) var(--radius) 0;
    margin-bottom: 1.3rem;
    color: var(--text-primary);
    font-style: italic;
}

.detail-content img {
    max-width: 100%;
    border-radius: var(--radius);
    margin: 1rem 0;
}

/* ===== RELATED ===== */
.related-section {
    border-top: 1px solid var(--border);
    padding-top: 3rem;
}

.related-title {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1.2rem;
}

/* ===== EMPTY STATE ===== */
.empty-state {
    text-align: center;
    padding: 5rem;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 3rem;
    color: var(--border);
    margin-bottom: 1rem;
    display: block;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .page-title { font-size: 2rem; }

    .featured-post {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .featured-post-img { height: 200px; }

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

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

@media (max-width: 480px) {
    .filter-btns { justify-content: flex-start; }
}