/* =============================================================
   ARCHIVE / CATEGORY PAGE — archive.css
   Shared template for blog archive, category, and tag pages.
   ============================================================= */

/* ---- Page hero banner ---- */
.archive-hero {
    position: relative;
    height: 80vh;
    min-height: 360px;
    overflow: hidden;
    display: flex;
    align-items: flex-end;
}

.archive-hero__bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.archive-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(10, 20, 60, .7) 0%, rgba(10, 20, 60, .3) 100%);
    z-index: 1;
}

.archive-hero__content {
    position: relative;
    z-index: 2;
    width: 100%;
}

.archive-hero__title {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    z-index: 2;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-padding);
    font-size: clamp(var(--font-size-2xl), 5vw, var(--font-size-4xl));
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
}

/* ---- Category Navigation Tabs (line-tabs style) ---- */
.archive-nav__primary {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0;
    margin-top: var(--space-6);
    border-top: 1px solid rgba(255, 255, 255, 0.18);
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.archive-nav__primary::-webkit-scrollbar {
    display: none;
}

.archive-nav__primary-item {
    display: block;
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    white-space: nowrap;
    letter-spacing: 0.04em;
    flex-shrink: 0;
    transition: color var(--transition-fast), background var(--transition-fast);
}

.archive-nav__primary-item:hover {
    color: var(--color-white);
    background: rgba(255, 255, 255, 0.08);
}

.archive-nav__primary-item.is-active {
    color: var(--color-white);
    font-weight: var(--font-weight-semibold);
}

/* Secondary category tabs */
.archive-nav__secondary {
    background: var(--color-gray-100);
    border-bottom: 1px solid var(--color-gray-200);
}

.archive-nav__secondary-inner {
    display: flex;
    gap: var(--space-2);
    padding-block: var(--space-3);
    overflow-x: auto;
    scrollbar-width: none;
}

.archive-nav__secondary::-webkit-scrollbar {
    display: none;
}

.archive-nav__sub-item {
    display: block;
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-500);
    text-decoration: none;
    border-radius: var(--radius-full);
    border: 1px solid var(--color-gray-300);
    white-space: nowrap;
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.archive-nav__sub-item:hover {
    background: var(--color-white);
    color: var(--color-gray-800);
    border-color: var(--color-gray-400);
}

.archive-nav__sub-item.is-active {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

/* ---- Posts section ---- */
.archive-body {
    background: var(--color-white);
    padding-block: var(--space-16);
}

.archive-category-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin-bottom: var(--space-8);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-gray-200);
}

/* Posts grid */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.post-card {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    background: #fff;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    padding: var(--space-6);
    transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.post-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.post-card__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
}

.post-card__cat {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    background: color-mix(in srgb, var(--color-primary) 10%, transparent);
    padding: 2px 10px;
    border-radius: var(--radius-sm);
}

.post-card__date {
    font-size: var(--font-size-xs);
    color: var(--color-gray-400);
}

.post-card__title {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    line-height: var(--line-height-tight);
    margin-bottom: var(--space-3);
    transition: color var(--transition-fast);
}

.post-card:hover .post-card__title {
    color: var(--color-primary);
}

.post-card__excerpt {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    line-height: var(--line-height-relaxed);
    flex: 1;
    margin-bottom: var(--space-5);
}

.post-card__more {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
    margin-top: auto;
}

/* Pagination */
.archive-pagination {
    margin-top: var(--space-16);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.archive-pagination a,
.archive-pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.archive-pagination a {
    background: var(--color-white);
    color: var(--color-gray-700);
    border: 1px solid var(--color-gray-300);
}

.archive-pagination a:hover {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.archive-pagination .current {
    background: var(--color-primary);
    color: var(--color-white);
    border: 1px solid var(--color-primary);
}

/* No posts message */
.archive-empty {
    text-align: center;
    padding-block: var(--space-20);
    color: var(--color-gray-400);
}

.archive-empty__icon {
    font-size: 4rem;
    margin-bottom: var(--space-4);
}

.archive-empty__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-600);
    margin-bottom: var(--space-3);
}

.archive-empty__desc {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
    .posts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .posts-grid {
        grid-template-columns: 1fr;
    }

    .archive-nav__primary-item {
        padding-inline: var(--space-4);
    }
}