/* styles-en-article.css — Article detail page styles */
:root {
    --chan-color: #dc2626;
    --chan-bg: #fef2f2;
}
body.chan-frontier { --chan-color: #dc2626; --chan-bg: #fef2f2; }
body.chan-country  { --chan-color: #2563eb; --chan-bg: #eff6ff; }
body.chan-diplomacy{ --chan-color: #0891b2; --chan-bg: #ecfeff; }
body.chan-society  { --chan-color: #16a34a; --chan-bg: #f0fdf4; }
body.chan-history  { --chan-color: #d97706; --chan-bg: #fffbeb; }
body.chan-debate   { --chan-color: #7c3aed; --chan-bg: #f5f3ff; }

/* Reading progress */
.reading-progress {
    position: fixed; top: 0; left: 0; right: 0; z-index: 9999;
    height: 3px; background: var(--color-border-light);
}
.reading-bar {
    height: 100%; width: var(--pct,0%);
    background: var(--chan-color); transition: width 0.1s;
}

/* Article hero image */
.article-hero-img {
    position: relative; height: 340px; overflow: hidden;
    background: var(--color-primary);
}
.article-hero-img img {
    width: 100%; height: 100%; object-fit: cover; display: block;
}
.article-hero-overlay { position: absolute; inset: 0; }

/* Article header section */
.article-header-section {
    background: var(--color-bg); border-bottom: 1px solid var(--color-border-light);
    padding: 2.5rem 0 2rem;
}
.breadcrumb { margin-bottom: 1.2rem; }
.breadcrumb ol {
    display: flex; gap: 0.5rem; align-items: center; list-style: none; font-size: 0.82rem; color: var(--color-text-muted);
}
.breadcrumb li:not(:last-child)::after { content: '/'; margin-left: 0.5rem; color: var(--color-border); }
.breadcrumb a { color: var(--color-text-muted); transition: color 0.2s; }
.breadcrumb a:hover { color: var(--color-primary); }

.article-channel-tag {
    display: inline-block; color: #fff; font-size: 0.72rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.06em;
    padding: 3px 12px; border-radius: 3px; margin-bottom: 1rem;
}

.article-main-title {
    font-family: var(--font-heading); font-size: 2.2rem; font-weight: 900;
    color: var(--color-primary); line-height: 1.2; letter-spacing: -0.02em;
    margin-bottom: 1.2rem; max-width: 800px;
}

.article-lead {
    font-size: 1.1rem; line-height: 1.7; color: var(--color-text-light);
    border-left: 3px solid var(--chan-color); padding-left: 1rem;
    margin-bottom: 1.5rem; max-width: 720px; font-style: italic;
}

.article-meta-bar {
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 1rem;
    padding: 1rem 0; border-top: 1px solid var(--color-border-light);
}
.article-author { display: flex; align-items: center; gap: 0.75rem; }
.author-avatar { width: 48px; height: 48px; border-radius: 50%; overflow: hidden; flex-shrink: 0; border: 2px solid var(--color-border); }
.author-avatar img { width: 100%; height: 100%; object-fit: cover; }
.author-name { font-weight: 700; font-size: 0.95rem; color: var(--color-primary); }
.author-affiliation { font-size: 0.8rem; color: var(--color-text-muted); font-style: italic; }
.article-meta-right { display: flex; align-items: center; gap: 1.25rem; }
.meta-item { display: flex; align-items: center; gap: 5px; font-size: 0.85rem; color: var(--color-text-muted); }

/* Article body */
.article-body-section { padding: 3rem 0 4rem; background: var(--color-bg); }

.article-layout {
    display: grid;
    grid-template-columns: 60px 1fr 280px;
    gap: 2.5rem; align-items: start;
}

/* Share column */
.article-share-col { position: sticky; top: 100px; }
.share-sticky { display: flex; flex-direction: column; align-items: center; gap: 0.75rem; }
.share-label { font-size: 0.68rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--color-text-muted); }
.share-btn {
    width: 38px; height: 38px; border-radius: 50%; border: 1px solid var(--color-border);
    display: flex; align-items: center; justify-content: center;
    transition: all 0.2s; color: var(--color-text-light);
}
.share-btn:hover { background: var(--chan-color); color: #fff; border-color: var(--chan-color); transform: translateY(-2px); }
.share-divider { width: 38px; height: 1px; background: var(--color-border-light); }
.tool-btn {
    width: 38px; height: 38px; border-radius: 8px; border: 1px solid var(--color-border);
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px;
    font-size: 0.6rem; font-weight: 600; text-transform: uppercase; color: var(--color-text-muted);
    cursor: pointer; background: none; transition: all 0.2s;
}
.tool-btn:hover { background: var(--chan-color); color: #fff; border-color: var(--chan-color); }

/* Article content */
.article-content-col { min-width: 0; }
.article-content {
    font-size: 1.05rem; line-height: 1.85; color: var(--color-text);
    max-width: 680px;
}
.article-content > p:first-child::first-letter {
    font-family: var(--font-heading); font-size: 3.5rem; font-weight: 900;
    float: left; line-height: 0.85; margin-right: 0.08em; margin-top: 0.08em;
    color: var(--chan-color);
}
.article-content p { margin-bottom: 1.5rem; text-align: justify; }
.article-content h2 {
    font-size: 1.5rem; font-weight: 800; color: var(--color-primary);
    margin: 2.5rem 0 1rem; padding-top: 1.5rem;
    border-top: 1px solid var(--color-border-light);
}
.article-content h3 { font-size: 1.2rem; font-weight: 700; color: var(--color-primary); margin: 2rem 0 0.75rem; }
.article-content strong { font-weight: 700; color: var(--color-primary); }
.article-content em { font-style: italic; }
.article-content blockquote {
    margin: 2rem 0; padding: 1.25rem 1.5rem;
    border-left: 4px solid var(--chan-color); background: var(--chan-bg);
    border-radius: 0 6px 6px 0;
}
.article-content blockquote p {
    font-size: 1.1rem; font-style: italic; line-height: 1.7;
    color: var(--color-primary); margin-bottom: 0; text-align: left;
}
.article-content ul, .article-content ol { margin: 0 0 1.5rem 1.5rem; }
.article-content ul li { list-style: disc; margin-bottom: 0.5rem; color: var(--color-text-light); }
.article-content ol li { list-style: decimal; margin-bottom: 0.5rem; color: var(--color-text-light); }
.article-content a { color: var(--color-primary); text-decoration: underline; text-underline-offset: 3px; }
.article-content a:hover { color: var(--chan-color); }
.article-content img { width: 100%; border-radius: 6px; margin: 1.5rem 0; }

/* Tags */
.article-tags-section { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; margin: 2.5rem 0 2rem; }
.tags-label { font-size: 0.82rem; font-weight: 700; color: var(--color-text-muted); margin-right: 0.25rem; }
.article-tag {
    display: inline-block; padding: 3px 10px; border-radius: 20px;
    background: var(--color-bg-light); color: var(--color-text-light);
    border: 1px solid var(--color-border-light); font-size: 0.78rem;
    font-weight: 500; transition: all 0.2s;
}
.article-tag:hover { background: var(--chan-color); color: #fff; border-color: var(--chan-color); }

/* Citation */
.citation-box { background: var(--color-bg-warm); border: 1px solid var(--color-border-light); border-radius: 6px; padding: 1.25rem; }
.citation-box h3 { font-size: 0.95rem; margin-bottom: 0.75rem; color: var(--color-primary); }
.citation-text { font-size: 0.85rem; line-height: 1.7; color: var(--color-text-light); margin-bottom: 0.75rem; }
.citation-text em { font-style: italic; }
.btn-copy-citation {
    padding: 6px 16px; border: 1px solid var(--color-border); border-radius: 4px;
    background: var(--color-bg); color: var(--color-text-light); font-size: 0.82rem;
    font-weight: 500; cursor: pointer; transition: all 0.2s;
}
.btn-copy-citation:hover { border-color: var(--chan-color); color: var(--chan-color); }

/* Sidebar */
.article-sidebar { position: sticky; top: 90px; }
.sidebar-card { background: var(--color-bg); border: 1px solid var(--color-border-light); border-radius: 10px; padding: 1.25rem; margin-bottom: 1.5rem; }
.sidebar-card h4 { font-family: var(--font-heading); font-size: 0.9rem; font-weight: 700; color: var(--color-text); margin-bottom: 0.75rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--color-border-light); }
.article-info-item { display: flex; justify-content: space-between; align-items: center; padding: 0.5rem 0; border-bottom: 1px solid var(--color-border-light); font-size: 0.88rem; }
.article-info-item:last-child { border-bottom: none; }
.info-label { color: var(--color-text-muted); }
.info-value { font-weight: 600; color: var(--color-text); }
.info-link { color: var(--chan-color); font-weight: 600; }
.info-link:hover { text-decoration: underline; }
.related-list { display: flex; flex-direction: column; gap: 0.75rem; }
.related-item { display: grid; grid-template-columns: 72px 1fr; gap: 0.6rem; align-items: start; transition: opacity 0.2s; }
.related-item:hover { opacity: 0.8; }
.related-thumb { border-radius: 4px; overflow: hidden; }
.related-thumb img { width: 100%; height: 55px; object-fit: cover; }
.related-info { display: flex; flex-direction: column; gap: 3px; }
.related-chan { font-size: 0.6rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; border-radius: 3px; color: #fff; padding: 1px 7px; width: fit-content; }
.related-title { font-size: 0.82rem; font-weight: 600; color: var(--color-text); line-height: 1.35; }

/* More articles section */
.more-articles-section { padding: 3rem 0; background: var(--color-bg-light); border-top: 1px solid var(--color-border-light); }
.section-header-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; }
.section-header-row h2 { font-family: var(--font-heading); font-size: 1.4rem; font-weight: 800; color: var(--color-primary); }
.see-all-link { font-size: 0.88rem; color: var(--chan-color); font-weight: 600; }
.see-all-link:hover { text-decoration: underline; }
.articles-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }
.article-card-sm { display: flex; flex-direction: column; background: var(--color-bg); border: 1px solid var(--color-border-light); border-radius: 8px; overflow: hidden; transition: all 0.2s; text-decoration: none; color: inherit; }
.article-card-sm:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,0.08); }
.card-sm-img { height: 130px; overflow: hidden; }
.card-sm-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s; }
.article-card-sm:hover .card-sm-img img { transform: scale(1.05); }
.card-sm-body { padding: 0.875rem; display: flex; flex-direction: column; gap: 0.35rem; flex: 1; }
.card-sm-tag { font-size: 0.65rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: #fff; padding: 2px 7px; border-radius: 3px; width: fit-content; background: var(--chan-color); }
.card-sm-body h3 { font-size: 0.88rem; font-weight: 700; line-height: 1.35; color: var(--color-primary); }
.card-sm-body p { font-size: 0.78rem; color: var(--color-text-light); line-height: 1.5; flex: 1; }
.card-sm-meta { font-size: 0.72rem; color: var(--color-text-muted); margin-top: auto; }

/* Responsive */
@media (max-width: 1100px) {
    .article-layout { grid-template-columns: 60px 1fr 240px; gap: 1.5rem; }
}
@media (max-width: 900px) {
    .article-layout { grid-template-columns: 1fr; }
    .article-share-col { display: none; }
    .articles-grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .article-hero-img { height: 220px; }
    .article-main-title { font-size: 1.7rem; }
    .article-lead { font-size: 1rem; }
    .article-meta-bar { flex-direction: column; align-items: flex-start; }
    .articles-grid-4 { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
    .article-main-title { font-size: 1.4rem; }
    .article-content { font-size: 1rem; }
    .article-content > p:first-child::first-letter { font-size: 2.8rem; }
}