/*
 * research.css — publication list (year-grouped) + paper detail page.
 * Serif body (Newsreader) set globally via body.section-research.
 */

/* ── Listing page wrap ─────────────────────────────────────────────────── */
.research-listing {
  max-width: 90ch;
  margin: 0 auto;
  padding: clamp(3rem, 7vw, 5rem) clamp(1.25rem, 4vw, 2rem) var(--sp-9);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-7);
}

@media (min-width: 1024px) {
  .research-listing {
    grid-template-columns: minmax(0, 70ch) 140px;
    align-items: start;
  }
  .research-listing__head { grid-column: 1 / -1; }
  .research-listing__rail { grid-column: 2; grid-row: 2; }
  .research-listing__main { grid-column: 1; grid-row: 2; }
}

.research-listing__head {
  margin-bottom: var(--sp-4);
}

.research-listing__kicker {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin: 0 0 var(--sp-4);
}

.research-listing__head h1 {
  font-family: var(--font-serif);
  font-variation-settings: "opsz" 72;
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1;
  margin: 0 0 var(--sp-4);
}

.research-listing__desc {
  font-size: var(--text-lg);
  color: var(--fg-2);
  margin: 0;
  max-width: 60ch;
  line-height: 1.5;
}

.research-listing__empty {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: var(--sp-7) 0;
}
.research-listing__empty p {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  color: var(--fg-2);
  margin: 0;
  font-style: italic;
}

/* Year jump rail */
.research-listing__rail {
  position: sticky;
  top: var(--sp-5);
  align-self: start;
  max-height: calc(100dvh - var(--sp-7));
  overflow-y: auto;
}
@media (max-width: 1023px) {
  .research-listing__rail { display: none; }
}

.research-listing__rail-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin: 0 0 var(--sp-3);
}

.research-listing__rail ul {
  list-style: none;
  padding: 0;
  margin: 0;
  border-left: 1px solid var(--rule);
}

.research-listing__rail a {
  display: block;
  padding: var(--sp-2) var(--sp-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--fg-3);
  text-decoration: none;
  border-left: 1px solid transparent;
  margin-left: -1px;
  transition: color 180ms cubic-bezier(0.16, 1, 0.3, 1),
              border-color 180ms cubic-bezier(0.16, 1, 0.3, 1);
}
.research-listing__rail a:hover,
.research-listing__rail a:focus-visible {
  color: var(--accent);
  border-left-color: var(--accent);
}

/* Paper page wrap */
.pub-year,
.pub-card,
.paper-page {
  max-width: 70ch;
  margin-left: auto;
  margin-right: auto;
}

.paper-page {
  padding-left: clamp(1.25rem, 4vw, 2rem);
  padding-right: clamp(1.25rem, 4vw, 2rem);
}

/* ── Year group label ──────────────────────────────────────────────────── */
.pub-year {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-top: var(--sp-7);
  margin-bottom: var(--sp-4);
  padding-bottom: var(--sp-2);
  border-bottom: 1px solid var(--rule);
}

/* ── Publication card (not really a card — just a block with hairline) ── */
.pub-card {
  margin-bottom: var(--sp-6);
  padding-top: var(--sp-3);
  padding-bottom: var(--sp-5);
  border-bottom: 1px solid var(--rule);
}
.pub-card:last-of-type { border-bottom: none; }

.pub-card__title {
  font-family: var(--font-serif);
  font-variation-settings: "opsz" 24;
  font-size: var(--text-xl);
  font-weight: 500;
  line-height: 1.25;
  margin: 0 0 var(--sp-2);
}
.pub-card__title a { color: var(--fg); text-decoration: none; }
.pub-card__title a:hover,
.pub-card__title a:focus-visible { color: var(--accent); }

.pub-card__authors {
  font-size: var(--text-sm);
  color: var(--fg-2);
  line-height: 1.55;
  margin: 0 0 var(--sp-1);
}
.pub-author--self {
  color: var(--fg);
  font-weight: 500;
}
.pub-equal-note {
  font-size: var(--text-xs);
  color: var(--fg-3);
  margin-left: var(--sp-2);
}

.pub-card__venue {
  font-style: italic;
  font-size: var(--text-sm);
  color: var(--fg-2);
  margin: 0 0 var(--sp-3);
}

/* Status — uppercase mono label with hairline, no fill, no color-by-status */
.pub-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
  padding: 2px 8px;
  border: 1px solid var(--rule);
  border-radius: 2px;
  margin-bottom: var(--sp-3);
}
.pub-badge--published    { color: var(--fg); border-color: var(--fg); }
.pub-badge--preprint     { color: var(--accent); border-color: var(--accent); }
.pub-badge--under-review { color: var(--fg-2); border-color: var(--fg-2); }

/* Links row — uniform style, no per-type colors */
.pub-card__links,
.paper-page__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
}

.pub-link {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--fg-2);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--rule);
  transition: color 180ms cubic-bezier(0.16, 1, 0.3, 1),
              border-color 180ms cubic-bezier(0.16, 1, 0.3, 1);
}
.pub-link:hover,
.pub-link:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ── Single paper page ────────────────────────────────────────────────── */
.paper-page { padding-top: clamp(3rem, 7vw, 5rem); padding-bottom: var(--sp-9); }

.paper-page__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: var(--sp-4);
}

.paper-page__title {
  font-family: var(--font-serif);
  font-variation-settings: "opsz" 48;
  font-size: clamp(1.8rem, 4.5vw, 2.66rem);
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.15;
  margin: 0 0 var(--sp-3);
}

.paper-page__authors {
  font-size: var(--text-md);
  color: var(--fg-2);
  line-height: 1.55;
  margin: 0 0 var(--sp-2);
}

.paper-page__venue {
  font-style: italic;
  font-size: var(--text-sm);
  color: var(--fg-2);
  margin: 0 0 var(--sp-6);
}

.paper-page__abstract-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: var(--sp-2);
}

/* Abstract: indented block, italic, no colored side-stripe. */
.paper-page__abstract {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: var(--text-md);
  color: var(--fg);
  line-height: 1.6;
  margin: 0 0 var(--sp-7);
  padding: 0;
  padding-left: var(--sp-5);
  border: none;
  border-left: 1px solid var(--rule);
}

.paper-page__divider {
  border: none;
  border-top: 1px solid var(--rule);
  margin: var(--sp-7) 0;
}

/* BibTeX */
.bibtex-block {
  background: var(--bg-2);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: var(--sp-5);
  margin: var(--sp-7) 0;
  position: relative;
}

.bibtex-block__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
  position: absolute;
  top: -0.6em;
  left: var(--sp-4);
  background: var(--bg);
  padding: 0 var(--sp-2);
}

.bibtex-block pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--fg);
  overflow-x: auto;
}

.paper-page__back {
  margin-top: var(--sp-7);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.paper-page__back a {
  color: var(--fg-2);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--rule);
  transition: color 180ms cubic-bezier(0.16, 1, 0.3, 1),
              border-color 180ms cubic-bezier(0.16, 1, 0.3, 1);
}
.paper-page__back a::before { content: "← "; }
.paper-page__back a:hover,
.paper-page__back a:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* Scroll-driven progress bar on paper pages */
.paper-page__progress {
  position: fixed;
  top: 0; left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  z-index: 50;
  transform-origin: 0 50%;
  pointer-events: none;
}
@supports (animation-timeline: scroll()) {
  .paper-page__progress {
    width: 100%;
    transform: scaleX(0);
    animation: paper-progress-scale linear;
    animation-timeline: scroll();
  }
  @keyframes paper-progress-scale {
    to { transform: scaleX(1); }
  }
}

/* Section glyph on h2 in research prose */
.paper-page .prose h2 {
  position: relative;
}
.paper-page .prose h2::before {
  content: '§';
  position: absolute;
  left: -1.4em;
  top: 0.05em;
  font-family: var(--font-mono);
  font-size: 0.7em;
  color: var(--fg-3);
  font-weight: 400;
}
@media (max-width: 768px) {
  .paper-page .prose h2::before { display: none; }
}