/* Theory Talks — archive of interviews with IR theorists, 2008–2021 */

@import url('https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,400;0,6..72,500;0,6..72,600;0,6..72,700;1,6..72,400;1,6..72,500&family=Inter:wght@400;500;600&display=swap');

:root {
  --bg: #E4E1D5;
  --bg-card: #EDEADD;
  --ink: #211D17;
  --ink-soft: #5C5747;
  --ink-faint: #8B856F;
  --accent: #7C2E28;
  --accent-soft: #9C4A3F;
  --gold: #8E6C2E;
  --line: #C7C0A9;
  --line-soft: #D6D1BE;
  --paper-dark: #1D1A14;
  --paper-dark-ink: #DFDACB;
  --max: 920px;
  --serif: 'Newsreader', Georgia, 'Times New Roman', serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

img { max-width: 100%; display: block; }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 28px;
}

/* ---------- Top nav ---------- */
.topnav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(228, 225, 213, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.topnav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-top: 16px;
  padding-bottom: 16px;
  max-width: 1080px;
}
.wordmark {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.35rem;
  text-decoration: none;
  letter-spacing: 0.01em;
  color: var(--ink);
  white-space: nowrap;
}
.wordmark em { color: var(--accent); font-style: italic; }

.back-link {
  font-size: 0.92rem;
  text-decoration: none;
  color: var(--ink-soft);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.back-link:hover { color: var(--accent); }

.search-box {
  position: relative;
  flex: 1;
  max-width: 340px;
}
.search-box input {
  width: 100%;
  font-family: var(--sans);
  font-size: 0.92rem;
  padding: 9px 14px;
  border-radius: 5px;
  border: 1px solid var(--line);
  background: var(--bg-card);
  color: var(--ink);
}
.search-box input::placeholder { color: var(--ink-faint); }

/* ---------- Hero ---------- */
.hero {
  padding: 64px 0 40px;
  max-width: 1080px;
  margin: 0 auto;
}
.hero .eyebrow {
  font-family: var(--sans);
  font-size: 0.85rem;
  color: var(--gold);
  margin: 0 0 14px;
}
.hero h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(2.1rem, 4.4vw, 3.2rem);
  line-height: 1.12;
  margin: 0 0 20px;
  max-width: 16ch;
}
.hero p.lede {
  font-family: var(--serif);
  font-size: 1.2rem;
  color: var(--ink-soft);
  max-width: 58ch;
  margin: 0 0 8px;
  line-height: 1.5;
}
.hero p.lede a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-soft);
  white-space: nowrap;
}
.hero p.lede a:hover { border-color: var(--accent); }
.hero .facts {
  margin-top: 22px;
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  font-size: 0.88rem;
  color: var(--ink-faint);
}
.hero .facts strong { color: var(--ink); font-family: var(--serif); font-size: 1.1rem; display: block; }

/* ---------- Section headers ---------- */
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin: 56px 0 22px;
  max-width: 1080px;
  padding: 0 28px;
  margin-left: auto;
  margin-right: auto;
}
.section-head h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.5rem;
  margin: 0;
}
.section-head p {
  color: var(--ink-faint);
  font-size: 0.9rem;
  margin: 0;
}

/* ---------- Curated shelf ---------- */
.shelf {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 28px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.shelf-card {
  display: block;
  text-decoration: none;
  color: var(--ink);
  background: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: 3px;
  overflow: hidden;
  transition: border-color .15s ease;
}
.shelf-card:hover { border-color: var(--accent); }
.shelf-card .photo {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--paper-dark);
}
.shelf-card .photo img { width: 100%; height: 100%; object-fit: cover; }
.shelf-card .body { padding: 16px 18px 20px; }
.shelf-card .num {
  font-family: var(--serif);
  font-style: italic;
  color: var(--gold);
  font-size: 0.85rem;
}
.shelf-card h3 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.15rem;
  margin: 4px 0 6px;
}
.shelf-card .topic {
  font-size: 0.85rem;
  color: var(--ink-soft);
  line-height: 1.4;
}

/* ---------- Archive grid ---------- */
.controls {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.chip {
  font-family: var(--sans);
  font-size: 0.85rem;
  padding: 7px 14px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
}
.chip.active { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.chip:hover:not(.active) { border-color: var(--accent); color: var(--accent); }

.grid {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 28px 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}
.card {
  display: block;
  text-decoration: none;
  color: var(--ink);
  background: var(--bg-card);
  padding: 18px 16px 20px;
  transition: background .12s ease;
}
.card:hover { background: var(--bg); }
.card .photo {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--paper-dark);
  margin-bottom: 12px;
}
.card .photo img { width: 100%; height: 100%; object-fit: cover; }
.card .avatar-fallback {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); color: var(--paper-dark-ink); font-size: 1.1rem;
}
.card .num {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.78rem;
  color: var(--gold);
  display: block;
  margin-bottom: 3px;
}
.card h3 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.02rem;
  margin: 0 0 5px;
  line-height: 1.25;
}
.card .topic {
  font-size: 0.78rem;
  color: var(--ink-faint);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card .year {
  font-size: 0.75rem;
  color: var(--ink-faint);
  margin-top: 8px;
  display: block;
}
.no-results {
  max-width: 1080px;
  margin: 0 auto;
  padding: 40px 28px;
  color: var(--ink-faint);
  font-family: var(--serif);
  font-size: 1.1rem;
  display: none;
}

/* ---------- Footer ---------- */
footer {
  background: var(--paper-dark);
  color: var(--paper-dark-ink);
  margin-top: 60px;
  padding: 48px 0 40px;
}
footer .wrap { max-width: 1080px; }
footer h4 { font-family: var(--serif); font-weight: 500; font-size: 1.2rem; margin: 0 0 10px; }
footer p { color: #B8B2A0; font-size: 0.9rem; max-width: 60ch; line-height: 1.6; }
footer .flinks { margin-top: 18px; display: flex; gap: 22px; flex-wrap: wrap; }
footer .flinks a { color: var(--paper-dark-ink); text-decoration: none; font-size: 0.88rem; border-bottom: 1px solid #4A4536; }
footer .flinks a:hover { border-color: var(--paper-dark-ink); }

/* ---------- Talk page ---------- */
.talk-head {
  max-width: 1080px;
  margin: 0 auto;
  padding: 44px 28px 0;
}
.talk-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--serif);
  font-style: italic;
  color: var(--gold);
  font-size: 1rem;
  margin-bottom: 18px;
}
.talk-meta .dot { color: var(--line); }
.talk-top {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 30px;
  align-items: end;
}
.talk-top .photo {
  width: 160px;
  height: 160px;
  border-radius: 4px;
  overflow: hidden;
  background: var(--paper-dark);
}
.talk-top .photo img { width: 100%; height: 100%; object-fit: cover; }
.talk-top .avatar-fallback {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); color: var(--paper-dark-ink); font-size: 2.4rem;
}
.talk-top h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  line-height: 1.18;
  margin: 0;
}
.talk-top h1 .on { color: var(--ink-soft); font-weight: 400; font-style: italic; }

.talk-body {
  max-width: 700px;
  margin: 40px auto 0;
  padding: 0 28px;
  font-family: var(--serif);
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--ink);
}
.talk-body .intro {
  font-size: 1.28rem;
  color: var(--ink-soft);
  border-left: 3px solid var(--accent);
  padding-left: 20px;
  margin-bottom: 40px;
}
.talk-body p { margin: 0 0 24px; }
.talk-body p.q {
  font-weight: 600;
  color: var(--accent);
  margin-top: 36px;
  margin-bottom: 10px;
}
.talk-body p.a { margin-bottom: 8px; }

.bio-box {
  max-width: 700px;
  margin: 20px auto 0;
  padding: 24px 28px;
  border-top: 1px solid var(--line);
}
.bio-box h4 {
  font-family: var(--sans);
  font-size: 0.8rem;
  color: var(--ink-faint);
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.bio-box p {
  font-family: var(--serif);
  font-size: 1.02rem;
  color: var(--ink-soft);
  line-height: 1.6;
  margin: 0;
}

.related-box {
  max-width: 700px;
  margin: 0 auto;
  padding: 20px 28px 0;
}
.related-box h4 {
  font-family: var(--sans);
  font-size: 0.8rem;
  color: var(--ink-faint);
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.related-box ul { margin: 0; padding-left: 20px; font-size: 0.92rem; color: var(--ink-soft); }
.related-box li { margin-bottom: 6px; }

.cite-box {
  max-width: 700px;
  margin: 30px auto 60px;
  padding: 20px 24px;
  background: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: 3px;
}
.cite-box h4 {
  font-family: var(--sans);
  font-size: 0.8rem;
  color: var(--ink-faint);
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.cite-box p {
  font-family: var(--sans);
  font-size: 0.88rem;
  color: var(--ink-soft);
  margin: 0;
  line-height: 1.6;
}
.cite-box code {
  display: block;
  margin-top: 10px;
  font-family: 'Inter', monospace;
  font-size: 0.82rem;
  color: var(--ink-faint);
  word-break: break-all;
}

.talk-nav {
  max-width: 700px;
  margin: 0 auto 50px;
  padding: 24px 28px 0;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-size: 0.9rem;
}
.talk-nav a { text-decoration: none; color: var(--ink-soft); }
.talk-nav a:hover { color: var(--accent); }
.talk-nav .lbl { display: block; font-size: 0.75rem; color: var(--ink-faint); margin-bottom: 4px; }

/* ---------- About page ---------- */
.about-body {
  max-width: 700px;
  margin: 40px auto 60px;
  padding: 0 28px;
  font-family: var(--serif);
  font-size: 1.12rem;
  line-height: 1.7;
  color: var(--ink);
}
.about-body h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.4rem;
  margin: 44px 0 16px;
}
.about-body p { margin: 0 0 22px; }
.about-body a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-soft);
}
.about-body a:hover { border-color: var(--accent); }
.about-body blockquote {
  margin: 30px 0;
  padding-left: 20px;
  border-left: 3px solid var(--accent);
  font-style: italic;
  color: var(--ink-soft);
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .shelf { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .grid { grid-template-columns: 1fr 1fr; }
  .shelf { grid-template-columns: 1fr; }
  .talk-top { grid-template-columns: 100px 1fr; }
  .talk-top .photo { width: 100px; height: 100px; }
  .search-box { max-width: 160px; }
  .topnav .wrap { flex-wrap: wrap; }
}
