/* ==========================================
   Premium Category Page
   ========================================== */

/* ----- Design Tokens ----- */
.category-layout {
    --cat-black: #121212;
    --cat-dark: #333;
    --cat-gray: #666;
    --cat-light: #999;
    --cat-muted: #ccc;
    --cat-rule: #e2e2e2;
    --cat-bg: #fff;
    --cat-bg-alt: #f7f7f5;
    --cat-accent: #567b95;
    --cat-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --cat-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --cat-max-w: 1100px;
    --cat-transition: 0.22s ease;
}

/* ----- Category Hero Header ----- */
.cat-hero {
    border-bottom: 2px solid var(--cat-black);
    padding: 50px 20px 30px;
    text-align: center;
    background: var(--cat-bg);
}

.cat-hero-inner {
    max-width: var(--cat-max-w);
    margin: 0 auto;
}

.cat-hero h1 {
    font-family: var(--cat-serif);
    font-size: 2.8rem;
    font-weight: 700;
    line-height: 1.1;
    color: var(--cat-black);
    margin-bottom: 10px;
    letter-spacing: -0.02em;
}

.cat-hero-desc {
    font-family: var(--cat-sans);
    font-size: 1.05rem;
    color: var(--cat-gray);
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto;
}

.cat-hero-count {
    font-family: var(--cat-sans);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--cat-light);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-top: 14px;
}

/* ----- Sort & Filter Bar ----- */
.cat-toolbar {
    max-width: var(--cat-max-w);
    margin: 0 auto;
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--cat-rule);
}

.cat-toolbar-label {
    font-family: var(--cat-sans);
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--cat-light);
}

.cat-sort-btns {
    display: flex;
    gap: 4px;
}

.cat-sort-btn {
    font-family: var(--cat-sans);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--cat-gray);
    background: none;
    border: 1px solid var(--cat-rule);
    padding: 5px 14px;
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--cat-transition);
}

.cat-sort-btn.active,
.cat-sort-btn:hover {
    background: var(--cat-black);
    color: #fff;
    border-color: var(--cat-black);
}

/* ----- Articles Layout ----- */
.cat-page-body {
    max-width: var(--cat-max-w);
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
    padding-top: 30px;
}

@media (max-width: 900px) {
    .cat-page-body {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

/* ----- Featured Article (First Large) ----- */
.cat-featured {
    margin-bottom: 30px;
    border-bottom: 1px solid var(--cat-rule);
    padding-bottom: 30px;
}

.cat-featured a {
    display: block;
    text-decoration: none;
}

.cat-featured-img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    background: var(--cat-bg-alt);
    margin-bottom: 16px;
    transition: opacity var(--cat-transition);
    border-radius: 4px;
}

.cat-featured a:hover .cat-featured-img {
    opacity: 0.9;
}

.cat-featured h2 {
    font-family: var(--cat-serif);
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1.2;
    color: var(--cat-black);
    margin-bottom: 10px;
    transition: color var(--cat-transition);
}

.cat-featured a:hover h2 {
    color: var(--cat-accent);
}

.cat-featured .cat-featured-excerpt {
    font-family: var(--cat-sans);
    font-size: 1rem;
    color: var(--cat-gray);
    line-height: 1.6;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.cat-featured .cat-card-meta {
    font-size: 0.78rem;
}

/* ----- Article List Cards ----- */
.cat-articles-list {
    display: flex;
    flex-direction: column;
}

.cat-card {
    display: grid;
    grid-template-columns: 1fr 180px;
    gap: 20px;
    align-items: flex-start;
    padding: 24px 0;
    border-bottom: 1px solid var(--cat-rule);
}

.cat-card:first-child {
    padding-top: 0;
}

.cat-card-body {
    min-width: 0;
}

.cat-card h3 {
    font-family: var(--cat-serif);
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.3;
    color: var(--cat-black);
    margin-bottom: 6px;
    transition: color var(--cat-transition);
}

.cat-card h3 a {
    color: inherit;
    text-decoration: none;
}

.cat-card h3 a:hover {
    color: var(--cat-accent);
}

.cat-card-excerpt {
    font-family: var(--cat-sans);
    font-size: 0.88rem;
    color: var(--cat-gray);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 8px;
}

.cat-card-meta {
    font-family: var(--cat-sans);
    font-size: 0.72rem;
    color: var(--cat-light);
    display: flex;
    align-items: center;
    gap: 6px;
}

.cat-card-meta .author-name {
    font-weight: 500;
    color: var(--cat-gray);
}

.cat-card-meta .dot::before {
    content: '·';
}

.cat-card-thumb {
    width: 180px;
    aspect-ratio: 3 / 2;
    object-fit: cover;
    background: var(--cat-bg-alt);
    border-radius: 4px;
    flex-shrink: 0;
    transition: opacity var(--cat-transition);
}

.cat-card-thumb:hover {
    opacity: 0.88;
}

.cat-card-no-img {
    width: 180px;
    aspect-ratio: 3 / 2;
    background: linear-gradient(135deg, #f8f8f8, #eee);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cat-muted);
    font-size: 1.2rem;
    flex-shrink: 0;
}

@media (max-width: 600px) {
    .cat-card {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .cat-card-thumb,
    .cat-card-no-img {
        width: 100%;
        order: -1;
    }
}

/* ----- Sidebar ----- */
.cat-sidebar {
    position: sticky;
    top: 80px;
    align-self: start;
}

@media (max-width: 900px) {
    .cat-sidebar {
        position: static;
    }
}

.cat-sidebar-block {
    margin-bottom: 30px;
}

.cat-sidebar-header {
    border-top: 2px solid var(--cat-black);
    padding-top: 6px;
    margin-bottom: 14px;
}

.cat-sidebar-header h4 {
    font-family: var(--cat-sans);
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--cat-black);
}

.cat-sidebar-item {
    padding: 10px 0;
    border-bottom: 1px solid var(--cat-rule);
}

.cat-sidebar-item:last-child {
    border-bottom: none;
}

.cat-sidebar-item a {
    text-decoration: none;
    display: block;
}

.cat-sidebar-item h5 {
    font-family: var(--cat-serif);
    font-size: 0.88rem;
    font-weight: 600;
    line-height: 1.35;
    color: var(--cat-black);
    transition: color var(--cat-transition);
    margin-bottom: 2px;
}

.cat-sidebar-item a:hover h5 {
    color: var(--cat-accent);
}

.cat-sidebar-item .time {
    font-family: var(--cat-sans);
    font-size: 0.68rem;
    color: var(--cat-light);
}

/* Categories list in sidebar */
.cat-sidebar-cats a {
    display: block;
    padding: 8px 0;
    font-family: var(--cat-sans);
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--cat-dark);
    text-decoration: none;
    border-bottom: 1px solid var(--cat-rule);
    transition: color var(--cat-transition);
}

.cat-sidebar-cats a:last-child {
    border-bottom: none;
}

.cat-sidebar-cats a:hover {
    color: var(--cat-accent);
}

.cat-sidebar-cats .count {
    float: right;
    font-size: 0.72rem;
    color: var(--cat-light);
    font-weight: 400;
}

/* ----- Load More ----- */
.cat-load-more {
    text-align: center;
    padding: 30px 0;
}

.cat-load-more-btn {
    font-family: var(--cat-sans);
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--cat-black);
    background: none;
    border: 1px solid var(--cat-black);
    padding: 10px 32px;
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--cat-transition);
}

.cat-load-more-btn:hover {
    background: var(--cat-black);
    color: #fff;
}

.cat-load-more-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ----- Loading / Empty States ----- */
.cat-loading {
    text-align: center;
    padding: 60px 20px;
}

.cat-spinner {
    width: 32px;
    height: 32px;
    border: 2px solid var(--cat-rule);
    border-top-color: var(--cat-black);
    border-radius: 50%;
    animation: cat-spin 0.8s linear infinite;
    margin: 0 auto 12px;
}

@keyframes cat-spin {
    to {
        transform: rotate(360deg);
    }
}

.cat-empty {
    text-align: center;
    padding: 60px 20px;
    max-width: 500px;
    margin: 0 auto;
}

.cat-empty h3 {
    font-family: var(--cat-serif);
    font-size: 1.5rem;
    color: var(--cat-black);
    margin-bottom: 8px;
}

.cat-empty p {
    font-family: var(--cat-sans);
    color: var(--cat-gray);
}

/* ----- Responsive ----- */
@media (max-width: 600px) {
    .cat-hero h1 {
        font-size: 1.8rem;
    }

    .cat-hero-desc {
        font-size: 0.95rem;
    }

    .cat-featured h2 {
        font-size: 1.4rem;
    }
}