/* ============================================
   Generic section primitives
   ============================================ */

.section {
  position: relative;
  padding: 160px 8vw;
  max-width: 1240px;
  margin: 0 auto;
  z-index: 5;
}

.section-head {
  margin-bottom: 80px;
  max-width: 720px;
}

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-eyebrow {
  display: block;
  font-family: var(--serif);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--ink-faint);
  text-transform: uppercase;
  margin-bottom: 24px;
}

.section-title {
  font-family: var(--sans);
  font-weight: 300;
  font-size: clamp(40px, 5.5vw, 68px);
  line-height: 1.04;
  letter-spacing: var(--tracking-tight);
  color: var(--ink);
  margin-bottom: 28px;
}

.section-lede {
  font-size: clamp(16px, 1.4vw, 19px);
  line-height: 1.55;
  color: var(--ink-mute);
  font-weight: 400;
  max-width: 560px;
}

/* ============================================
   Coming-soon placeholder
   ============================================ */

.coming-soon {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 80px 56px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background:
    radial-gradient(800px 400px at 0% 0%, rgba(110, 139, 255, 0.05), transparent 60%),
    rgba(255, 255, 255, 0.015);
  overflow: hidden;
  min-height: 320px;
}

.coming-soon-mark {
  position: absolute;
  top: 0;
  right: 0;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle at top right, rgba(110, 139, 255, 0.08), transparent 60%);
  pointer-events: none;
}

.coming-soon-title {
  font-family: var(--sans);
  font-weight: 300;
  font-size: clamp(32px, 4.5vw, 52px);
  line-height: 1;
  letter-spacing: var(--tracking-tight);
  color: var(--ink);
  margin-bottom: 18px;
  position: relative;
  background: linear-gradient(180deg, #FFFFFF 0%, #B8B8C2 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.coming-soon-text {
  font-size: clamp(14px, 1.3vw, 16px);
  line-height: 1.65;
  color: var(--ink-mute);
  max-width: 480px;
  position: relative;
}

/* ============================================
   Research grid (kept for future use)
   ============================================ */

.research-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
}

.research-card {
  display: flex;
  flex-direction: column;
  background: var(--bg);
  padding: 40px 36px;
  position: relative;
  transition: background 0.5s var(--duration);
  min-height: 380px;
}

.research-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(600px 300px at var(--mx, 50%) var(--my, 50%), rgba(110, 139, 255, 0.06), transparent 60%);
  opacity: 0;
  transition: opacity 0.5s var(--duration);
  pointer-events: none;
}

.research-card:hover {
  background: var(--bg-soft);
}

.research-card:hover::after {
  opacity: 1;
}

.research-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 56px;
  position: relative;
  z-index: 1;
}

.status-tag {
  font-family: var(--serif);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  color: var(--ink-mute);
}

.status-tag.preprint {
  border-color: rgba(110, 139, 255, 0.4);
  color: #B6C5FF;
  background: rgba(110, 139, 255, 0.06);
}

.status-tag.in-progress {
  border-color: rgba(245, 245, 245, 0.18);
  color: var(--ink-mute);
}

.status-tag.published {
  border-color: rgba(160, 230, 180, 0.3);
  color: #B6E2C5;
  background: rgba(160, 230, 180, 0.05);
}

.research-year {
  font-family: var(--serif);
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
}

.research-title {
  font-family: var(--sans);
  font-weight: 400;
  font-size: clamp(20px, 1.9vw, 24px);
  line-height: 1.25;
  letter-spacing: var(--tracking);
  color: var(--ink);
  margin-bottom: 18px;
  position: relative;
  z-index: 1;
}

.research-abstract {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--ink-mute);
  margin-bottom: auto;
  padding-bottom: 32px;
  position: relative;
  z-index: 1;
}

.research-meta {
  font-family: var(--serif);
  font-size: 11px;
  font-weight: 400;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 10px;
  position: relative;
  z-index: 1;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.dot-sep {
  color: var(--ink-faint);
}

/* ============================================
   Projects archive
   ============================================ */

.archive {
  border-top: 1px solid var(--line);
}

.archive-row {
  display: grid;
  grid-template-columns: 100px 1fr auto;
  gap: 48px;
  align-items: start;
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
  position: relative;
  transition: padding 0.4s var(--duration);
  overflow: hidden;
}

.archive-row::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(110, 139, 255, 0.04), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s var(--duration);
  pointer-events: none;
}

.archive-row:hover::before {
  transform: translateX(100%);
}

.archive-row:hover {
  padding-left: 12px;
}

.archive-year {
  font-family: var(--serif);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
  padding-top: 6px;
}

.archive-title {
  font-family: var(--sans);
  font-weight: 400;
  font-size: clamp(22px, 2.4vw, 30px);
  line-height: 1.15;
  letter-spacing: var(--tracking);
  color: var(--ink);
  margin-bottom: 12px;
  transition: color 0.3s var(--duration);
}

.archive-row:hover .archive-title {
  color: #fff;
}

.archive-desc {
  font-size: 15px;
  line-height: 1.55;
  color: var(--ink-mute);
  max-width: 560px;
}

.archive-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: flex-end;
  max-width: 280px;
  padding-top: 8px;
}

.archive-tags li {
  font-family: var(--serif);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--ink-mute);
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.02);
  transition: border-color 0.3s var(--duration);
}

.archive-row:hover .archive-tags li {
  border-color: var(--line-strong);
}

/* ============================================
   Writing
   ============================================ */

.writing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.writing-card {
  display: flex;
  flex-direction: column;
  padding: 36px 0;
  border-top: 1px solid var(--line);
  position: relative;
  transition: transform 0.4s var(--duration);
}

.writing-card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  height: 1px;
  width: 0;
  background: var(--ink);
  transition: width 0.6s var(--duration);
}

.writing-card:hover::before {
  width: 64px;
}

.writing-date {
  font-family: var(--serif);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
  margin-bottom: 28px;
}

.writing-title {
  font-family: var(--sans);
  font-weight: 400;
  font-size: clamp(20px, 1.8vw, 24px);
  line-height: 1.25;
  letter-spacing: var(--tracking);
  color: var(--ink);
  margin-bottom: 16px;
}

.writing-excerpt {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--ink-mute);
  margin-bottom: 24px;
}

.writing-cta {
  margin-top: auto;
  font-family: var(--serif);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--ink-mute);
  transition: color 0.3s var(--duration), transform 0.3s var(--duration);
  display: inline-block;
}

.writing-card:hover .writing-cta {
  color: var(--ink);
  transform: translateX(4px);
}