/* ============================================
   SEIFERT CONSULTING — ARTICLE PAGE
   Editorial single-post layout. Extends
   tokens + ds + insights css.
   ============================================ */

/* ----- Article hero ----- */
.article-hero {
    position: relative;
    background: var(--secondary);
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
    padding: 5rem 0 4rem;
    margin-bottom: 3.5rem;
    overflow: hidden;
}
.article-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url('assets/hero-light.webp');
    background-size: cover;
    background-position: center;
    opacity: 0.45;
    pointer-events: none;
}
.article-hero-inner {
    position: relative;
    z-index: 1;
    max-width: 64ch;
}

.article-back {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.005em;
    color: var(--foreground-muted);
    margin-bottom: 2.5rem;
    transition: color var(--transition-fast);
}
.article-back svg { transition: transform var(--transition-normal); }
.article-back:hover { color: var(--foreground); }
.article-back:hover svg { transform: translateX(-3px); }

.article-category {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    font-size: 0.625rem;
    font-weight: 600;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--highlight);
    margin-bottom: 1.5rem;
}
.article-category::before {
    content: '';
    width: 28px; height: 1px;
    background: var(--highlight);
}

.article-title {
    font-size: clamp(2.5rem, 5.5vw, 4rem);
    font-weight: 500;
    line-height: 1.0;
    letter-spacing: -0.04em;
    color: var(--foreground);
    margin: 0 0 2.5rem;
    max-width: 17ch;
}

.article-byline {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}
.article-byline .avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
    border: 1px solid var(--border);
}
.article-byline .avatar img {
    width: 100%; height: 100%;
    object-fit: cover;
    object-position: center top;
}
.article-byline .info {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
}
.article-byline .name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--foreground);
    letter-spacing: -0.005em;
}
.article-byline .meta {
    font-size: 0.75rem;
    color: var(--muted-foreground);
    display: flex;
    align-items: center;
    gap: 0.625rem;
}
.article-byline .meta .dot {
    width: 3px; height: 3px;
    background: var(--border-strong);
    border-radius: 50%;
}

/* ----- Article cover ----- */
.article-cover {
    max-width: 1100px;
    margin: 0 auto 5rem;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 16 / 8;
    position: relative;
    border: 1px solid var(--border);
}

/* ----- Article body ----- */
.article-body {
    max-width: 64ch;
    margin: 0 auto;
    padding-bottom: 5rem;
}
.article-body p {
    font-size: 1.125rem;
    line-height: 1.75;
    margin: 0 0 1.5rem;
    color: var(--foreground);
    letter-spacing: -0.003em;
}
.article-body p.lead {
    font-size: 1.375rem;
    line-height: 1.55;
    color: var(--foreground);
    margin-bottom: 2.75rem;
    font-weight: 400;
    letter-spacing: -0.012em;
}
.article-body p.lead::first-letter {
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 500;
    font-size: 4.5rem;
    line-height: 0.85;
    color: var(--highlight);
    float: left;
    margin: 0.15rem 0.5rem -0.25rem 0;
}
.article-body h2 {
    font-size: 1.75rem;
    font-weight: 500;
    letter-spacing: -0.025em;
    line-height: 1.2;
    margin: 4rem 0 1.5rem;
    color: var(--foreground);
}
.article-body h2 em {
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 500;
}
.article-body h3 {
    font-size: 1.25rem;
    font-weight: 500;
    letter-spacing: -0.015em;
    line-height: 1.25;
    margin: 3rem 0 1rem;
    color: var(--foreground);
}

.article-body blockquote {
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 500;
    font-size: 1.625rem;
    line-height: 1.4;
    letter-spacing: -0.015em;
    color: var(--foreground);
    border-left: 2px solid var(--highlight);
    padding: 0.625rem 0 0.625rem 2rem;
    margin: 3rem 0;
}

.article-body ul, .article-body ol {
    margin: 0 0 1.75rem;
    padding-left: 0;
    list-style: none;
}
.article-body li {
    font-size: 1.125rem;
    line-height: 1.7;
    margin-bottom: 0.625rem;
    color: var(--foreground);
    padding-left: 1.5rem;
    position: relative;
}
.article-body ul li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--highlight);
}
.article-body ol {
    counter-reset: art-list;
}
.article-body ol li {
    counter-increment: art-list;
}
.article-body ol li::before {
    content: counter(art-list, decimal-leading-zero);
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 500;
    color: var(--highlight);
    width: 1.5rem;
    position: absolute;
    left: 0;
    display: inline-block;
}

.article-body a {
    color: var(--foreground);
    border-bottom: 1px solid var(--border-strong);
    transition: color var(--transition-fast), border-color var(--transition-fast);
}
.article-body a:hover {
    color: var(--highlight);
    border-bottom-color: var(--highlight);
}

.article-body em, .article-body i {
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 500;
}
.article-body strong { font-weight: 600; }

/* Pull divider between sections */
.article-body hr {
    border: none;
    width: 60px;
    height: 1px;
    background: var(--border-strong);
    margin: 3.5rem auto;
}

/* ----- Related ----- */
.related-section {
    max-width: 1100px;
    margin: 0 auto;
    border-top: 1px solid var(--border);
    padding-top: 4rem;
}
.related-section h2 {
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--muted-foreground);
    margin: 0 0 2rem;
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
}
@media (max-width: 700px) { .related-grid { grid-template-columns: 1fr; gap: 3rem; } }

@media (max-width: 700px) {
    .article-hero { padding: 3.5rem 0 2.5rem; margin-bottom: 2rem; }
    .article-title { font-size: clamp(2rem, 8vw, 2.75rem); margin-bottom: 1.75rem; }
    .article-back { margin-bottom: 1.5rem; }
    .article-cover { margin-bottom: 3rem; aspect-ratio: 16 / 10; }
    .article-body { padding-left: 1rem; padding-right: 1rem; padding-bottom: 3rem; }
    .article-body p { font-size: 1.0625rem; }
    .article-body p.lead { font-size: 1.25rem; }
    .article-body p.lead::first-letter { font-size: 3.5rem; }
    .article-body h2 { font-size: 1.5rem; margin-top: 3rem; }
    .article-body h3 { font-size: 1.125rem; margin-top: 2.5rem; }
    .article-body blockquote { font-size: 1.375rem; padding-left: 1.25rem; margin: 2.5rem 0; }
    .article-body li { font-size: 1.0625rem; }
    .related-section { padding-top: 3rem; }
}
@media (max-width: 480px) {
    .article-hero { padding: 3rem 0 2rem; margin-bottom: 1.5rem; border-radius: 0; }
    .article-byline { padding-top: 1.5rem; gap: 0.75rem; }
    .article-byline .avatar { width: 38px; height: 38px; }
    .article-body { padding-bottom: 2.5rem; }
}