/* articles/article.css — styles for the article pages (Unit 7: articles/**). */

.ja-breadcrumb {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.72rem; letter-spacing: 0.05em; text-transform: uppercase;
  color: var(--fg-subtle, #a3a3a3); margin: 0.35rem 0 1.9rem;
}
.ja-breadcrumb a { color: var(--fg-muted, #737373); }
.ja-breadcrumb a:hover { color: var(--brand-deep, #2589ed); }
.ja-breadcrumb .ja-sep { margin: 0 0.45rem; color: var(--line-strong, #d4d4d4); }

.ja-grid { display: grid; grid-template-columns: minmax(0, 1fr) 310px; gap: clamp(2rem, 4vw, 3.5rem); align-items: start; }

/* --- Title block ------------------------------------------------------- */
.ja-badges { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0 0 1.1rem; }
.ja-badge {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.66rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 0.32rem 0.65rem; border-radius: 999px; border: 1px solid transparent; white-space: nowrap;
}
.ja-badge-type { background: var(--accent-subtle, rgba(37, 137, 237, 0.12)); color: var(--brand-deep, #2589ed); }
.ja-badge-cat { border-color: var(--line-strong, #d4d4d4); color: var(--fg-muted, #737373); background: var(--bg, #fff); }
.ja-badge-oa { background: rgba(26, 127, 55, 0.1); color: #1a7f37; }

.ja-title {
  font-family: 'Inter Tight', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: clamp(1.7rem, 3.4vw, 2.5rem); font-weight: 800; letter-spacing: -0.035em;
  line-height: 1.14; color: var(--fg, #0a0a0a); margin: 0 0 1rem;
}

.ja-authors { font-size: 1.02rem; line-height: 1.6; color: var(--fg, #0a0a0a); margin: 0 0 0.4rem; }
.ja-authors sup { color: var(--brand-deep, #2589ed); font-weight: 600; }
.ja-affils { list-style: none; margin: 0 0 1.5rem; padding: 0; font-size: 0.85rem; color: var(--fg-muted, #737373); }
.ja-affils li { margin: 0.15rem 0; }
.ja-affils sup { color: var(--brand-deep, #2589ed); font-weight: 600; margin-right: 0.35rem; }

.ja-meta {
  border-top: 1px solid var(--line, #eaeaea); border-bottom: 1px solid var(--line, #eaeaea);
  padding: 0.95rem 0; margin: 0 0 1.4rem; display: grid; gap: 0.5rem;
  font-size: 0.88rem; color: var(--fg-muted, #737373);
}
.ja-meta a { color: var(--brand-deep, #2589ed); overflow-wrap: anywhere; }
.ja-meta b { color: var(--fg, #0a0a0a); font-weight: 700; }
.ja-publine em { font-style: italic; }
.ja-history span + span::before, .ja-metrics span + span::before { content: '·'; margin: 0 0.55rem; color: var(--line-strong, #d4d4d4); }

.ja-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin: 0 0 2.4rem; }
.ja-btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: var(--brand-deep, #2589ed); color: #fff; font-weight: 700; font-size: 0.9rem;
  padding: 0.6rem 1.25rem; border-radius: 10px; box-shadow: 0 2px 8px rgba(37, 137, 237, 0.25);
}
.ja-btn:hover { text-decoration: none; filter: brightness(1.06); }

/* --- Article sections --------------------------------------------------- */
.ja-label {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.72rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--brand-deep, #2589ed); margin: 0 0 0.85rem;
}
.ja-section { border-top: 1px solid var(--line, #eaeaea); padding-top: 1.5rem; margin: 0 0 2.1rem; }
.ja-abstract { font-size: 1.03rem; line-height: 1.75; color: var(--fg, #0a0a0a); margin: 0; }

.ja-keywords ul { list-style: none; display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0; padding: 0; }
.ja-keywords li {
  font-size: 0.8rem; padding: 0.28rem 0.75rem; border-radius: 999px;
  border: 1px solid var(--line-strong, #d4d4d4); background: var(--bg-subtle, #fafafa); color: var(--fg-muted, #737373);
}

.ja-license {
  border: 1px solid var(--line, #eaeaea); border-left: 3px solid var(--brand-deep, #2589ed);
  background: var(--bg-subtle, #fafafa); padding: 1.15rem 1.3rem; margin: 0 0 2.1rem;
}
.ja-license p { margin: 0; font-size: 0.92rem; line-height: 1.7; color: var(--fg-muted, #737373); }
.ja-license a { color: var(--brand-deep, #2589ed); font-weight: 600; }

.ja-refs { margin: 0; padding-left: 1.4rem; font-size: 0.92rem; line-height: 1.65; color: var(--fg-muted, #737373); }
.ja-refs li { margin: 0 0 0.7rem; padding-left: 0.3rem; }
.ja-refs li::marker { color: var(--brand-deep, #2589ed); font-weight: 600; }

/* --- Right rail ---------------------------------------------------------- */
.ja-side { display: flex; flex-direction: column; gap: 1.25rem; }
.ja-card { border: 1px solid var(--line, #eaeaea); border-radius: 14px; background: var(--bg, #fff); padding: 1.25rem 1.3rem; }
.ja-card .ja-label { margin-bottom: 1rem; }

.ja-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.75rem; }
.ja-stat b {
  display: block; font-family: 'Inter Tight', 'Inter', sans-serif; font-size: 1.3rem; font-weight: 800;
  letter-spacing: -0.02em; color: var(--fg, #0a0a0a); line-height: 1.2;
}
.ja-stat span {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.62rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--fg-subtle, #a3a3a3);
}

.ja-info { margin: 0; font-size: 0.85rem; }
.ja-info > div { display: flex; justify-content: space-between; gap: 1rem; padding: 0.45rem 0; border-bottom: 1px dashed var(--line, #eaeaea); }
.ja-info > div:last-child { border-bottom: none; }
.ja-info dt { color: var(--fg-subtle, #a3a3a3); flex: none; }
.ja-info dd { margin: 0; text-align: right; color: var(--fg, #0a0a0a); min-width: 0; overflow-wrap: anywhere; }
.ja-info dd a { color: var(--brand-deep, #2589ed); }

.ja-cite-head { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; margin-top: 0.9rem; }
.ja-cite-head:first-of-type { margin-top: 0; }
.ja-cite-fmt {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.68rem; font-weight: 600; letter-spacing: 0.1em; color: var(--fg, #0a0a0a);
}
.ja-copy {
  font: 600 0.72rem 'Inter', -apple-system, sans-serif; color: var(--fg-muted, #737373);
  background: var(--bg, #fff); border: 1px solid var(--line-strong, #d4d4d4); border-radius: 6px;
  padding: 0.18rem 0.6rem; cursor: pointer;
}
.ja-copy:hover { color: var(--brand-deep, #2589ed); border-color: var(--brand-deep, #2589ed); }
.ja-cite-text {
  font-size: 0.8rem; line-height: 1.6; color: var(--fg-muted, #737373);
  background: var(--bg-subtle, #fafafa); border: 1px solid var(--line, #eaeaea); border-radius: 8px;
  padding: 0.7rem 0.8rem; margin: 0.45rem 0 0; overflow-wrap: anywhere;
}
.ja-downloads { display: flex; gap: 0.6rem; margin-top: 1rem; }
.ja-dl {
  flex: 1; text-align: center; font-size: 0.8rem; font-weight: 600; color: var(--fg-muted, #737373);
  border: 1px solid var(--line-strong, #d4d4d4); border-radius: 8px; padding: 0.45rem 0.6rem;
}
.ja-dl:hover { text-decoration: none; color: var(--brand-deep, #2589ed); border-color: var(--brand-deep, #2589ed); }

/* --- All-articles index --------------------------------------------------- */
.ja-index-head { margin: 0.35rem 0 2.2rem; max-width: 44rem; }
.ja-index-title {
  font-family: 'Inter Tight', 'Inter', sans-serif; font-size: clamp(1.9rem, 4vw, 2.7rem);
  font-weight: 800; letter-spacing: -0.04em; color: var(--fg, #0a0a0a); margin: 0.3rem 0 0.75rem;
}
.ja-index-head p { margin: 0; color: var(--fg-muted, #737373); line-height: 1.65; }
.ja-list { list-style: none; margin: 0; padding: 0; }
.ja-item { border-top: 1px solid var(--line, #eaeaea); padding: 1.6rem 0; }
.ja-item-title { font-family: 'Inter Tight', 'Inter', sans-serif; font-size: 1.25rem; font-weight: 700; letter-spacing: -0.02em; line-height: 1.3; margin: 0.55rem 0 0.4rem; }
.ja-item-title a { color: var(--fg, #0a0a0a); }
.ja-item-title a:hover { color: var(--brand-deep, #2589ed); }
.ja-item-authors { margin: 0 0 0.4rem; font-size: 0.92rem; color: var(--fg-muted, #737373); }
.ja-item-meta { display: flex; flex-wrap: wrap; gap: 0.3rem 0.95rem; font-size: 0.82rem; color: var(--fg-subtle, #a3a3a3); }
.ja-item-meta a { color: var(--brand-deep, #2589ed); overflow-wrap: anywhere; }

/* --- Responsive / print ---------------------------------------------------- */
@media (max-width: 900px) {
  .ja-grid { grid-template-columns: 1fr; }
  .ja-side { margin-top: 0.5rem; }
}
@media print {
  .ja-side, .ja-actions, .ja-copy, .ja-breadcrumb { display: none !important; }
  .ja-grid { display: block; }
}