/*!
 * Duty Calculator BD — Blog (list + detail)
 * Premium slim-fit editorial styling. Uses base.css design tokens only,
 * so it adapts to light/dark themes automatically. No hardcoded surfaces.
 */

/* ──────────────────────────────────────────────────────────────
   Shared
   ────────────────────────────────────────────────────────────── */
.blog-wrap,
.blog-detail-wrap {
    max-width: 1180px;
    margin: 0 auto;
    padding: var(--space-6) var(--space-4) var(--space-8);
}

.blog-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    font-size: var(--fs-label);
    font-weight: 800;
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
    color: var(--bd-primary);
    margin: 0 0 var(--space-2);
}
.blog-eyebrow::before {
    content: "";
    width: 18px;
    height: 2px;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--bd-primary), var(--bd-orange));
}

/* ──────────────────────────────────────────────────────────────
   List — header
   ────────────────────────────────────────────────────────────── */
.blog-head {
    margin-bottom: var(--space-5);
}
.blog-head h1 {
    font-family: var(--font-display);
    font-size: clamp(1.7rem, 3vw, 2.3rem);
    line-height: var(--lh-tight);
    letter-spacing: -.025em;
    color: var(--bd-text);
    margin: 0 0 var(--space-2);
}
.blog-lead {
    font-size: 1rem;
    line-height: var(--lh-normal);
    color: var(--bd-text-muted);
    margin: 0;
    max-width: 64ch;
}

/* ──────────────────────────────────────────────────────────────
   List — category nav (slim chips, horizontal scroll on mobile)
   ────────────────────────────────────────────────────────────── */
.blog-cat-nav {
    margin: 0 0 var(--space-6);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--bd-divider);
}
.blog-cat-nav h2 {
    font-size: var(--fs-label);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
    color: var(--bd-text-faint);
    margin: 0 0 var(--space-3);
    font-weight: 700;
}
.blog-cat-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}
.blog-cat-link {
    display: inline-flex;
    align-items: center;
    min-height: 36px;
    padding: 0 var(--space-4);
    border: 1px solid var(--bd-border);
    border-radius: 999px;
    background: var(--bd-surface);
    color: var(--bd-text-muted);
    font-size: var(--fs-small);
    font-weight: 600;
    text-decoration: none;
    white-space: nowrap;
    transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast), transform var(--t-fast);
}
.blog-cat-link:hover,
.blog-cat-link:focus-visible {
    color: var(--bd-primary);
    border-color: var(--bd-primary-mid);
    background: var(--bd-primary-light);
}
.blog-cat-link[aria-current="page"] {
    color: #fff;
    background: var(--bd-primary);
    border-color: var(--bd-primary);
}

/* ──────────────────────────────────────────────────────────────
   List — featured card
   ────────────────────────────────────────────────────────────── */
.blog-featured {
    margin-bottom: var(--space-6);
}
.blog-featured-card {
    position: relative;
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    border: 1px solid var(--bd-border);
    border-radius: var(--r-2xl);
    background: var(--bd-surface);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--t-base), border-color var(--t-base), transform var(--t-base);
}
.blog-featured-card::before {
    content: "";
    position: absolute;
    inset: 0 0 auto 0;
    height: 3px;
    background: linear-gradient(90deg, var(--bd-primary) 0%, var(--bd-accent) 55%, var(--bd-orange) 100%);
    z-index: 2;
}
.blog-featured-card:hover,
.blog-featured-card:focus-within {
    box-shadow: var(--shadow-lg);
    border-color: var(--bd-primary-mid);
    transform: translateY(-2px);
}
.blog-featured-media {
    position: relative;
    background: var(--bd-surface-offset);
    aspect-ratio: 16 / 9;
    overflow: hidden;
}
.blog-featured-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--t-slow);
}
.blog-featured-card:hover .blog-featured-media img {
    transform: scale(1.03);
}
.blog-featured-body {
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.blog-featured-body h2 {
    font-family: var(--font-display);
    font-size: clamp(1.25rem, 2vw, 1.6rem);
    line-height: var(--lh-snug);
    letter-spacing: -.02em;
    margin: 0 0 var(--space-3);
}
.blog-featured-body h2 a {
    color: var(--bd-text);
    text-decoration: none;
    transition: color var(--t-fast);
}
.blog-featured-body h2 a:hover,
.blog-featured-body h2 a:focus-visible {
    color: var(--bd-primary);
}

/* Category tag chip (featured + cards) */
.blog-card-tag {
    display: inline-flex;
    align-items: center;
    align-self: flex-start;
    gap: .35rem;
    font-size: var(--fs-label);
    font-weight: 700;
    letter-spacing: .04em;
    text-transform: uppercase;
    color: var(--bd-primary);
    background: var(--bd-primary-light);
    border: 1px solid var(--bd-primary-mid);
    border-radius: 999px;
    padding: .2rem .6rem;
    margin-bottom: var(--space-3);
}

/* ──────────────────────────────────────────────────────────────
   List — grid cards
   ────────────────────────────────────────────────────────────── */
.blog-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
}
.blog-card {
    position: relative;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--bd-border);
    border-radius: var(--r-xl);
    background: var(--bd-surface);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--t-base), border-color var(--t-base), transform var(--t-base);
}
.blog-card:hover,
.blog-card:focus-within {
    box-shadow: var(--shadow-md);
    border-color: var(--bd-primary-mid);
    transform: translateY(-2px);
}
.blog-card-media {
    background: var(--bd-surface-offset);
    aspect-ratio: 16 / 9;
    overflow: hidden;
}
.blog-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--t-slow);
}
.blog-card:hover .blog-card-media img {
    transform: scale(1.04);
}
.blog-card-body {
    padding: var(--space-4) var(--space-4) var(--space-5);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    flex: 1 1 auto;
}
.blog-card-body h3 {
    font-family: var(--font-display);
    font-size: 1.05rem;
    line-height: var(--lh-snug);
    letter-spacing: -.01em;
    margin: 0;
}
.blog-card-body h3 a {
    color: var(--bd-text);
    text-decoration: none;
    transition: color var(--t-fast);
}
.blog-card-body h3 a:hover,
.blog-card-body h3 a:focus-visible {
    color: var(--bd-primary);
}
.blog-excerpt {
    font-size: var(--fs-small);
    line-height: 1.6;
    color: var(--bd-text-muted);
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Meta row with dot separators */
.blog-card-meta {
    margin-top: auto;
    padding-top: var(--space-3);
    font-size: var(--fs-label);
    color: var(--bd-text-faint);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: .35rem .6rem;
    font-variant-numeric: tabular-nums;
}
.blog-card-meta span {
    display: inline-flex;
    align-items: center;
    gap: .3rem;
}
.blog-card-meta span + span::before {
    content: "·";
    margin-right: .55rem;
    color: var(--bd-text-faint);
}

/* Read-more affordance */
.blog-readmore {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    margin-top: var(--space-2);
    font-size: var(--fs-small);
    font-weight: 600;
    color: var(--bd-primary);
    text-decoration: none;
}
.blog-readmore i { transition: transform var(--t-fast); }
.blog-card:hover .blog-readmore i,
.blog-readmore:hover i { transform: translateX(3px); }

/* ──────────────────────────────────────────────────────────────
   List — empty + pagination
   ────────────────────────────────────────────────────────────── */
.blog-empty {
    border: 1px dashed var(--bd-border);
    border-radius: var(--r-2xl);
    background: var(--bd-surface-2, var(--bd-surface));
    padding: var(--space-8) var(--space-4);
    text-align: center;
    color: var(--bd-text-muted);
}
.blog-empty h2 {
    font-size: var(--fs-h2);
    color: var(--bd-text);
    margin: 0 0 var(--space-2);
}

.blog-pagination {
    margin-top: var(--space-8);
}
.blog-pagination ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
}
.blog-page-link {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    min-height: 40px;
    padding: 0 var(--space-4);
    border: 1px solid var(--bd-border);
    border-radius: var(--r-md);
    background: var(--bd-surface);
    color: var(--bd-text-muted);
    font-size: var(--fs-small);
    font-weight: 600;
    text-decoration: none;
    transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}
.blog-page-link:hover,
.blog-page-link:focus-visible {
    color: var(--bd-primary);
    border-color: var(--bd-primary-mid);
    background: var(--bd-primary-light);
}
.blog-page-current {
    display: inline-flex;
    align-items: center;
    min-height: 40px;
    padding: 0 var(--space-3);
    font-size: var(--fs-small);
    color: var(--bd-text-faint);
    font-variant-numeric: tabular-nums;
}

.visually-hidden,
.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

/* ──────────────────────────────────────────────────────────────
   Detail — article
   ────────────────────────────────────────────────────────────── */
.blog-article {
    max-width: 760px;
    margin: 0 auto;
    padding: var(--space-6) var(--space-6) var(--space-8);
    border-radius: var(--r-2xl);
}

.blog-article-header {
    margin-bottom: var(--space-5);
}
.blog-article-header .breadcrumb-nav {
    margin-bottom: var(--space-4);
}
.blog-article-title {
    font-family: var(--font-display);
    font-size: clamp(1.7rem, 3.4vw, 2.5rem);
    line-height: 1.15;
    letter-spacing: -.03em;
    color: var(--bd-text);
    margin: var(--space-2) 0 var(--space-4);
}
.blog-article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: .4rem .9rem;
    font-size: var(--fs-small);
    color: var(--bd-text-muted);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--bd-divider);
    margin: 0;
}
.blog-article-meta > span {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
}
.blog-article-meta i { color: var(--bd-primary); font-size: .9rem; }

/* Featured figure */
.blog-article-figure {
    margin: var(--space-5) 0;
}
.blog-article-figure img {
    width: 100%;
    height: auto;
    border-radius: var(--r-xl);
    border: 1px solid var(--bd-border);
    display: block;
}
.blog-article-figure figcaption {
    margin-top: var(--space-2);
    font-size: var(--fs-small);
    color: var(--bd-text-faint);
    text-align: center;
    line-height: var(--lh-snug);
}

/* ──────────────────────────────────────────────────────────────
   Detail — article body (rendered CMS HTML), premium reading column
   ────────────────────────────────────────────────────────────── */
.blog-article-body {
    font-size: 1.05rem;
    line-height: 1.75;
    color: var(--bd-text);
}
.blog-article-body > * + * { margin-top: 1.15em; }

.blog-article-body h2,
.blog-article-body h3,
.blog-article-body h4 {
    font-family: var(--font-display);
    color: var(--bd-text);
    line-height: var(--lh-snug);
    letter-spacing: -.015em;
    scroll-margin-top: calc(var(--nav-h) + 1rem);
}
.blog-article-body h2 {
    font-size: 1.45rem;
    margin-top: 2em;
    padding-bottom: .3em;
    border-bottom: 1px solid var(--bd-divider);
}
.blog-article-body h3 { font-size: 1.2rem; margin-top: 1.6em; }
.blog-article-body h4 { font-size: 1.05rem; margin-top: 1.4em; }

.blog-article-body p { margin: 0; }

.blog-article-body a {
    color: var(--bd-primary);
    text-decoration: underline;
    text-underline-offset: .15em;
    text-decoration-thickness: 1px;
    font-weight: 500;
}
.blog-article-body a:hover { text-decoration-thickness: 2px; }

.blog-article-body ul,
.blog-article-body ol { padding-left: 1.4rem; }
.blog-article-body li { margin-bottom: .5em; }
.blog-article-body li::marker { color: var(--bd-primary); }

.blog-article-body blockquote {
    margin: 1.5em 0;
    padding: .75rem 1.15rem;
    border-left: 3px solid var(--bd-primary);
    background: var(--bd-surface-2, var(--bd-surface-offset));
    border-radius: 0 var(--r-md) var(--r-md) 0;
    color: var(--bd-text-muted);
    font-style: italic;
}
.blog-article-body blockquote p { margin: 0; }

.blog-article-body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--r-lg);
    border: 1px solid var(--bd-border);
    margin: 1.5em 0;
}

.blog-article-body code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: .88em;
    background: var(--bd-surface-2, var(--bd-surface-offset));
    border: 1px solid var(--bd-border);
    border-radius: var(--r-sm);
    padding: .1em .4em;
}
.blog-article-body pre {
    background: var(--bd-surface-2, var(--bd-surface-offset));
    border: 1px solid var(--bd-border);
    border-radius: var(--r-lg);
    padding: 1rem 1.15rem;
    overflow-x: auto;
    font-size: .9rem;
    line-height: 1.5;
}
.blog-article-body pre code { background: none; border: 0; padding: 0; }

.blog-article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5em 0;
    font-size: .95rem;
    display: block;
    overflow-x: auto;
}
.blog-article-body th,
.blog-article-body td {
    border: 1px solid var(--bd-border);
    padding: .55rem .7rem;
    text-align: left;
}
.blog-article-body th {
    background: var(--bd-surface-2, var(--bd-surface-offset));
    font-weight: 700;
    color: var(--bd-text);
}

.blog-article-body hr {
    border: 0;
    height: 1px;
    background: var(--bd-divider);
    margin: 2em 0;
}

/* ──────────────────────────────────────────────────────────────
   Detail — related posts
   ────────────────────────────────────────────────────────────── */
.blog-related {
    max-width: 1180px;
    margin: var(--space-8) auto 0;
    padding-top: var(--space-6);
    border-top: 1px solid var(--bd-divider);
}
.blog-related-title {
    font-family: var(--font-display);
    font-size: var(--fs-h2);
    letter-spacing: -.015em;
    color: var(--bd-text);
    margin: 0 0 var(--space-4);
}
.blog-related-grid {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
}
.blog-related-item {
    border-radius: var(--r-xl);
    overflow: hidden;
    transition: box-shadow var(--t-base), border-color var(--t-base), transform var(--t-base);
}
.blog-related-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--bd-primary-mid);
    transform: translateY(-2px);
}
.blog-related-link {
    display: flex;
    flex-direction: column;
    height: 100%;
    text-decoration: none;
    color: inherit;
}
.blog-related-link img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    display: block;
    background: var(--bd-surface-offset);
}
.blog-related-name {
    display: block;
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    line-height: var(--lh-snug);
    letter-spacing: -.01em;
    color: var(--bd-text);
    padding: var(--space-4) var(--space-4) 0;
    transition: color var(--t-fast);
}
.blog-related-link:hover .blog-related-name { color: var(--bd-primary); }
.blog-related-date {
    display: block;
    font-size: var(--fs-label);
    color: var(--bd-text-faint);
    padding: var(--space-2) var(--space-4) var(--space-4);
    font-variant-numeric: tabular-nums;
}

/* ──────────────────────────────────────────────────────────────
   Responsive
   ────────────────────────────────────────────────────────────── */
@media (min-width: 768px) {
    .blog-featured-card { grid-template-columns: 1.15fr 1fr; }
    .blog-featured-media { aspect-ratio: auto; min-height: 100%; }
    .blog-grid { grid-template-columns: repeat(2, 1fr); }
    .blog-related-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 1280px) {
    .blog-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 640px) {
    .blog-wrap,
    .blog-detail-wrap { padding: var(--space-5) var(--space-3) var(--space-6); }
    .blog-article { padding: var(--space-5) var(--space-4) var(--space-6); }
    .blog-featured-body { padding: var(--space-5); }
    /* Let the category chips scroll horizontally instead of wrapping tall. */
    .blog-cat-list {
        flex-wrap: nowrap;
        overflow-x: auto;
        scrollbar-width: none;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 2px;
    }
    .blog-cat-list::-webkit-scrollbar { display: none; }
    .blog-article-body { font-size: 1rem; line-height: 1.7; }
}

/* ──────────────────────────────────────────────────────────────
   Premium glassmorphism — blog cards & article (palette unchanged)
   ────────────────────────────────────────────────────────────── */
@supports ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
    .blog-featured-card,
    .blog-card,
    .blog-empty,
    .blog-article,
    .blog-related-item {
        background: var(--glass-bg);
        border: 1px solid var(--glass-border);
        -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
        backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
        box-shadow: var(--glass-shadow);
    }
    /* Category chips read better with a touch more opacity. */
    .blog-cat-link,
    .blog-page-link {
        background: var(--glass-bg-strong);
        -webkit-backdrop-filter: blur(10px) saturate(130%);
        backdrop-filter: blur(10px) saturate(130%);
    }
}