/* ============================================
   sejinsarah.com — shared stylesheet, v2
   Academic-editorial. Helvetica-adjacent (Switzer).
   ============================================ */

:root {
  --bg: #ffffff;
  --text: #141414;
  --text-secondary: #5a5a5a;
  --text-tertiary: #8c8c8c;
  --accent: #8c1515;
  --rule: #e2e2e2;
  --rule-strong: #141414;

  --font: "Switzer", "Helvetica Neue", Helvetica, sans-serif;

  --max-width: 1040px;
  --gutter: 40px;
}

* { box-sizing: border-box; }
html { -webkit-font-smoothing: antialiased; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(140, 21, 21, 0.35);
  transition: border-color 0.15s ease;
}
a:hover, a:focus-visible { border-bottom-color: var(--accent); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.page { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--gutter); }
.prose { max-width: 62ch; }

/* ---------- Top nav ---------- */

.nav-wrap { border-bottom: 1px solid var(--rule); }

.nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 20px var(--gutter);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px 24px;
}

.nav-name {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
  border-bottom: none;
  white-space: nowrap;
}
.nav-name:hover { color: var(--accent); }

.nav-tabs {
  display: flex;
  gap: 26px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.nav-tabs a {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--text-secondary);
  border-bottom: 2px solid transparent;
  padding-bottom: 4px;
}
.nav-tabs a:hover { color: var(--text); border-bottom-color: var(--rule-strong); }
.nav-tabs a[aria-current="page"] { color: var(--text); border-bottom-color: var(--accent); }

/* ---------- Hero (homepage) ---------- */

.hero {
  padding: 48px 0 36px;
  border-bottom: 1px solid var(--rule);
}

.hero h1 {
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
  line-height: 1.1;
}

.hero-desc {
  font-size: 17px;
  color: var(--text-secondary);
  margin: 0 0 6px;
  max-width: 56ch;
}

.hero-location {
  font-size: 13px;
  color: var(--text-tertiary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 0;
}

/* ---------- Masthead (subpages) ---------- */

.masthead { padding: 40px 0 24px; }

.masthead-eyebrow {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 8px;
}

.masthead h1 {
  font-size: 34px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
  line-height: 1.15;
}

.masthead-sub {
  font-size: 15.5px;
  color: var(--text-secondary);
  margin: 0;
  max-width: 60ch;
}

.masthead-rule {
  margin-top: 22px;
  border: none;
  border-top: 2px solid var(--rule-strong);
}

/* ---------- Sections ---------- */

main { padding-bottom: 64px; }

.section { padding-top: 36px; }
.section + .section { border-top: 1px solid var(--rule); }

.section-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text);
  margin: 0 0 18px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.section-label a {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
  border-bottom: none;
}
.section-label a:hover { color: var(--accent); }

/* ---------- Card grid (Selected Work) ---------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}

.card {
  background: var(--bg);
  padding: 22px 20px;
  display: block;
  color: var(--text);
  border-bottom: none;
  min-height: 132px;
}

.card:hover { background: #fafafa; }

.card-tag {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 10px;
}

.card-title {
  font-size: 15.5px;
  font-weight: 700;
  margin: 0 0 6px;
  line-height: 1.3;
}

.card-desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
}

@media (max-width: 760px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .card-grid { grid-template-columns: 1fr; }
}

/* ---------- Work groups (Work page) ---------- */

.work-group { margin-bottom: 8px; }

.work-group-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin: 0 0 14px;
}

/* ---------- List rows (Writing) ---------- */

.list-row {
  display: block;
  padding: 18px 0;
  border-top: 1px solid var(--rule);
  color: var(--text);
}
.list-row:first-child { border-top: none; }
.list-row:hover .list-row-title { color: var(--accent); }

.list-row-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}

.list-row-title {
  font-size: 16px;
  font-weight: 700;
  transition: color 0.15s ease;
}

.list-row-meta {
  font-size: 12.5px;
  color: var(--text-tertiary);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.list-row-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 6px 0 0;
  max-width: 62ch;
}

/* ---------- Grouped bio blocks (About) ---------- */

.bio-line {
  font-size: 16px;
  max-width: 62ch;
  margin: 0 0 8px;
}
.bio-line:last-child { margin-bottom: 0; }

.group-row {
  display: flex;
  gap: 8px;
  padding: 10px 0;
  border-top: 1px solid var(--rule);
  font-size: 14.5px;
}
.group-row:first-child { border-top: none; }

.group-row-label {
  color: var(--text-tertiary);
  min-width: 110px;
  flex-shrink: 0;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding-top: 2px;
}

.group-row-value { color: var(--text); }

.tag-row { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-size: 12.5px;
  color: var(--text-secondary);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 5px 10px;
}

/* ---------- Detail entries (Research / Work / Volunteering) ---------- */

.entry-block { margin-bottom: 34px; }
.entry-block:last-child { margin-bottom: 0; }

.entry-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
}

.entry-title { font-weight: 700; font-size: 16px; }

.entry-leader {
  flex: 1;
  border-bottom: 1px dotted var(--text-tertiary);
  transform: translateY(-3px);
  min-width: 24px;
}

.entry-meta {
  font-size: 12px;
  color: var(--text-tertiary);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.entry-role {
  font-size: 13.5px;
  color: var(--text-secondary);
  margin: 3px 0 10px;
}

.entry-block ul {
  margin: 8px 0 0;
  padding-left: 18px;
}
.entry-block li {
  margin-bottom: 6px;
  font-size: 14.5px;
  color: var(--text);
  max-width: 68ch;
}
.entry-block li:last-child { margin-bottom: 0; }

.entry-subtitle {
  font-size: 14.5px;
  font-weight: 700;
  font-style: italic;
  margin: 14px 0 6px;
  max-width: 62ch;
}

.entry-abstract {
  margin: 14px 0 0;
  padding: 16px 18px;
  background: #fafafa;
  border-left: 2px solid var(--accent);
  max-width: 68ch;
}

.entry-abstract-label {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 8px;
}

.entry-abstract p {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin: 0 0 10px;
}
.entry-abstract p:last-child { margin-bottom: 0; }

.entry-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin: 16px 0 6px;
  padding: 16px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.entry-stat-value {
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.entry-stat-label {
  font-size: 11px;
  color: var(--text-tertiary);
  letter-spacing: 0.03em;
  margin-top: 3px;
  max-width: 16ch;
}

/* ---------- Résumé embed ---------- */

.resume-actions { display: flex; align-items: center; gap: 16px; margin-bottom: 20px; }

.btn-download {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--bg);
  background: var(--accent);
  border: 1px solid var(--accent);
  border-bottom: none;
  padding: 10px 18px;
  border-radius: 2px;
}
.btn-download:hover { background: #6f1010; border-color: #6f1010; }

.resume-embed { width: 100%; height: 900px; border: 1px solid var(--rule); display: block; }

.resume-embed-fallback {
  border: 1px dashed var(--rule);
  padding: 40px 20px;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 13.5px;
}

/* ---------- Footer (contact only) ---------- */

.footer-wrap { border-top: 1px solid var(--rule-strong); margin-top: 8px; }

footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 36px var(--gutter) 48px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-email {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  border-bottom: 1px solid var(--rule);
}
.footer-email:hover { color: var(--accent); border-bottom-color: var(--accent); }

.footer-copy {
  font-size: 12px;
  color: var(--text-tertiary);
}

/* ---------- Card with image (homepage) ---------- */

.card-photo {
  aspect-ratio: 16 / 10;
  width: 100%;
  background: #fafafa;
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.card-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.card-photo .placeholder-label {
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  text-align: center;
  padding: 0 10px;
}

.card-photo-wrap { padding: 0 !important; }
.card-photo-wrap .card-body { padding: 18px 20px 20px; }

.pdf-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 2px;
  padding: 3px 7px;
  margin-top: 8px;
}

.pdf-tag + .pdf-tag {
  margin-left: 8px;
}

/* ---------- Mini photo gallery (within entry blocks) ---------- */

.mini-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px 16px;
  margin-top: 16px;
}

.mini-gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--rule);
  display: block;
}

.mini-gallery figure { margin: 0; }

.mini-gallery figcaption {
  font-size: 12.5px;
  color: var(--text-secondary);
  margin-top: 8px;
  line-height: 1.4;
}

.mini-gallery figcaption em {
  font-style: normal;
  color: var(--text-tertiary);
}

@media (max-width: 700px) {
  .mini-gallery {
    grid-template-columns: 1fr;
  }
}

.mini-gallery--wide { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }

.mini-gallery--2col {
  grid-template-columns: repeat(2, 1fr) !important;
}

/* ---------- Tiny hero photo (homepage) ---------- */

.hero-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.hero-photo-tiny {
  width: 168px;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border: 1px solid var(--rule);
  display: block;
  flex: 0 0 auto;
}

@media (max-width: 560px) {
  .hero-photo-tiny { width: 112px; }
}


/* ---------- Responsive ---------- */

@media (max-width: 560px) {
  :root { --gutter: 22px; }
  .hero h1 { font-size: 32px; }
  .masthead h1 { font-size: 27px; }
  .nav { padding-top: 16px; }
  .nav-tabs { gap: 16px; }
  footer { flex-direction: column; }
  .group-row { flex-direction: column; gap: 3px; }
  .group-row-label { min-width: 0; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}