/* ============================================================
   Bentham Lab — shared design system
   Palette: deep moss green background + warm ink text + bright clay/sage accents
   Display: Fraunces / Body: Public Sans / Utility: IBM Plex Mono
   ============================================================ */

:root {
  --paper: #2e4b3b;
  --paper-alt: #3c5c48;
  --ink: #f7f6f0;
  --ink-soft: #c9cdbe;
  --ink-faint: #a8ae9b;
  --moss: #8fbfa0;
  --moss-dark: #1f3529;
  --clay: #a6472e;
  --clay-bright: #e2966f;
  --clay-soft: #c97a5f;
  --line: #dad6c7;
  --tag-bg: #24392c;
  --paper-rgb: 46, 75, 59;

  --font-display: "Fraunces", "Iowan Old Style", serif;
  --font-body: "Public Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;

  --max-w: 1120px;
  --gutter: clamp(20px, 4vw, 48px);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

.loaded-page {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.loaded-page.is-visible {
  opacity: 1;
  transform: translateY(0);
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--moss); text-decoration: none; }
a:hover { color: var(--clay-bright); }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--clay-bright);
  outline-offset: 3px;
}

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

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.15;
  margin: 0 0 0.5em;
  color: var(--ink);
}

h1 { font-size: clamp(2.1rem, 4.4vw, 3.6rem); font-weight: 440; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); }
h3 { font-size: 1.15rem; font-weight: 600; font-family: var(--font-body); }

p { margin: 0 0 1.1em; color: var(--ink-soft); max-width: 68ch; }

.hero > .eyebrow {
  font-size: 1.44rem;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clay-bright);
  display: inline-block;
  margin-bottom: 0.9em;
}

.rule {
  border: none;
  border-top: 1px solid var(--line);
  margin: 0;
}

.section {
  padding: 56px 0;
  border-top: 1px solid var(--line);
}

.section--tight { padding: 40px 0; }

/* ---------------- Header / nav ---------------- */

.site-header {
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: rgba(var(--paper-rgb), 0.92);
  backdrop-filter: blur(6px);
  z-index: 20;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
  gap: 24px;
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.55rem;
  color: var(--ink);
  line-height: 1.1;
}

.wordmark-mark {
  height: 52px;
  width: auto;
  flex-shrink: 0;
}

.wordmark small {
  display: block;
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-top: 3px;
}

nav.main-nav ul {
  list-style: none;
  display: flex;
  gap: clamp(10px, 1.4vw, 20px);
  margin: 0;
  padding: 0;
  flex-wrap: nowrap;
}

nav.main-nav a {
  font-size: 0.82rem;
  color: var(--ink-soft);
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
  white-space: nowrap;
}

nav.main-nav a:hover,
nav.main-nav a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--clay-bright);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

@media (max-width: 900px) {
  nav.main-nav { display: none; width: 100%; }
  nav.main-nav.open { display: block; }
  nav.main-nav ul { flex-direction: column; gap: 14px; padding: 18px 0 10px; flex-wrap: nowrap; }
  .site-header .container { flex-wrap: wrap; }
  .nav-toggle { display: inline-block; }
}

/* ---------------- Hero ---------------- */

.hero {
  padding: 64px 0 40px;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 10px;
  align-items: center;
  margin-top: 14px;
}

.hero-grid h1 {
  margin: 0;
}

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
}

.hero h1 { max-width: 16ch; }

.hero-sub {
  font-size: 1.02rem;
  max-width: none;
  margin-top: 10px;
  margin-bottom: 0;
}

.hero-figure { display: flex; align-items: center; justify-content: flex-end; }

.hero-structure-img {
  width: 100%;
  height: auto;
  display: block;
}

.hero-motif-row {
  margin-top: 10px;
}

.hero-motif { width: 100%; height: auto; color: var(--moss); }
.hero-motif .stroke { stroke: currentColor; fill: none; }
.hero-motif .clay-stroke { stroke: var(--clay-bright); fill: none; }
.hero-motif .dot { fill: var(--clay-bright); }
.hero-motif .label {
  font-family: var(--font-mono);
  font-size: 6px;
  fill: var(--ink-faint);
  letter-spacing: 0.05em;
}

.affil-bar {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-faint);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
}

.affil-bar a { color: var(--ink-soft); }

/* ---------------- Gallery (From the lab) ---------------- */

.gallery {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.gallery::-webkit-scrollbar { display: none; }

.gallery-item {
  flex: 0 0 260px;
  scroll-snap-align: start;
  aspect-ratio: 4 / 5;
  border: 1px dashed var(--line);
  border-radius: 3px;
  background: var(--paper-alt);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 12px;
  color: var(--ink-faint);
}

.gallery-item .ph-icon { width: 26px; height: 26px; margin-bottom: 10px; opacity: 0.6; }
.gallery-item .ph-label { font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: 0.04em; }
.gallery-item .ph-caption { font-size: 0.72rem; margin-top: 6px; color: var(--ink-faint); }

.gallery-item.has-photo {
  aspect-ratio: auto;
  padding: 0;
  overflow: hidden;
  border-style: solid;
  align-items: stretch;
  justify-content: flex-start;
  text-align: left;
}
.gallery-item .item-photo {
  aspect-ratio: 1;
  border-bottom: 1px dashed var(--line);
}
.gallery-item .item-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.gallery-item .item-photo.is-logo img {
  object-fit: contain;
  background: var(--ink);
  box-sizing: border-box;
  padding: 16px;
}
.gallery-item .item-body {
  padding: 14px 16px 18px;
  text-align: left;
  width: 100%;
}
.gallery-item .item-body h3 { margin-bottom: 0.2em; font-size: 1rem; }
.gallery-item .item-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--clay-bright);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.6em;
  display: block;
}
.gallery-item .item-body p { font-size: 0.85rem; margin-bottom: 0.4em; }

/* ---------------- Two column: news + sidebar ---------------- */

.split {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 48px;
}

@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }

.news-item {
  padding: 18px 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 18px;
}

.news-item:first-child { border-top: none; }

.news-date {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
  padding-top: 3px;
}

.news-item h3 { margin-bottom: 0.35em; font-size: 1.02rem; }
.news-item p { margin-bottom: 0.3em; font-size: 0.95rem; }

@media (max-width: 560px) {
  .news-item { grid-template-columns: 1fr; gap: 4px; }
}

.sidebar-card {
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 20px;
  margin-bottom: 16px;
  background: var(--paper-alt);
}

.sidebar-card .eyebrow { margin-bottom: 0.6em; }
.sidebar-card h3 { margin-bottom: 0.4em; }
.sidebar-card p { font-size: 0.92rem; margin-bottom: 0.6em; }
.sidebar-card .go { font-family: var(--font-mono); font-size: 0.78rem; }

.sidebar-card--accent {
  background: var(--moss-dark);
  border-color: var(--moss-dark);
}
.sidebar-card--accent .eyebrow,
.sidebar-card--accent h3,
.sidebar-card--accent p,
.sidebar-card--accent .go { color: #fff; }
.sidebar-card--accent .eyebrow { color: var(--clay-bright); }
.sidebar-card--accent .go { color: #fff; border-bottom: 1px solid rgba(255,255,255,0.4); padding-bottom: 2px; }

/* ---------------- Tags / chips ---------------- */

.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--tag-bg);
  color: var(--clay-bright);
  border-radius: 3px;
  padding: 3px 8px;
  margin: 0 6px 6px 0;
}

/* ---------------- Footer ---------------- */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 44px 0 32px;
  margin-top: 40px;
}

.funders {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 22px;
  margin: 14px 0 30px;
}

.funders .tag { background: transparent; border: 1px solid var(--line); }

.funder-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.funder-logo {
  display: block;
  height: 32px;
  width: auto;
  max-width: 150px;
  object-fit: contain;
  background: var(--ink);
  border-radius: 6px;
  padding: 8px 14px;
  box-sizing: content-box;
}

.funder-name {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-faint);
  text-align: center;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 24px;
  font-size: 0.9rem;
}

@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 500px) { .footer-grid { grid-template-columns: 1fr; } }

.footer-grid h4 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.8em;
}

.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid li { margin-bottom: 6px; }

.footer-bottom {
  margin-top: 34px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------------- Page header (sub-pages) ---------------- */

.page-header {
  padding: 48px 0 36px;
}

.page-header h1 { max-width: 24ch; }
.page-header .lede { font-size: 1.05rem; max-width: 60ch; }

/* ---------------- Divider motif ---------------- */

.divider {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--ink-faint);
  margin: 0;
}
.divider svg { width: 22px; height: 14px; flex: none; }
.divider .rule { flex: 1; }

/* ---------------- Content blocks (Research page etc) ---------------- */

.research-block {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 32px;
  padding: 34px 0;
  border-top: 1px solid var(--line);
}
.research-block:first-child { border-top: none; padding-top: 0; }

@media (max-width: 760px) { .research-block { grid-template-columns: 1fr; gap: 10px; } }

.research-block .index {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--clay-bright);
  letter-spacing: 0.06em;
}

.research-block h3 { font-family: var(--font-display); font-size: 1.35rem; font-weight: 500; }

/* ---------------- People ---------------- */

.people-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

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

.person-card {
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
  background: var(--paper-alt);
}

.person-photo {
  aspect-ratio: 1;
  border-bottom: 1px dashed var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  text-align: center;
  padding: 10px;
}

.person-photo.has-photo {
  padding: 0;
}
.person-photo.has-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.person-body { padding: 14px 16px 18px; }
.person-body h3 { margin-bottom: 0.2em; font-size: 1rem; }
.person-role { font-family: var(--font-mono); font-size: 0.7rem; color: var(--clay-bright); text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 0.6em; display: block; }
.person-body p { font-size: 0.88rem; margin-bottom: 0.4em; }

.person-card--empty {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 220px;
  border-style: dashed;
}
.person-card--empty p { font-family: var(--font-mono); font-size: 0.75rem; text-align: center; color: var(--ink-faint); margin: 0; padding: 20px; }

/* ---------------- Publications ---------------- */

.pub-item {
  padding: 24px 0;
  border-top: 1px solid var(--line);
}
.pub-item:first-child { border-top: none; }
.pub-item h3 { font-family: var(--font-display); font-weight: 500; font-size: 1.15rem; margin-bottom: 0.35em; }
.pub-meta { font-family: var(--font-mono); font-size: 0.78rem; color: var(--ink-faint); margin-bottom: 0.6em; }
.pub-links a { margin-right: 16px; font-size: 0.85rem; border-bottom: 1px solid var(--line); }
.pub-tags { margin-top: 12px; }

/* ---------------- Tools ---------------- */

.tool-card {
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 20px 22px;
  margin-bottom: 16px;
  background: var(--paper-alt);
}
.tool-card h3 { font-family: var(--font-mono); font-size: 0.98rem; font-weight: 600; }
.tool-card p { font-size: 0.92rem; margin-bottom: 0.5em; }

/* ---------------- Forms ---------------- */

.form-note {
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 18px 20px;
  background: var(--paper-alt);
  font-size: 0.92rem;
}

.contact-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
@media (max-width: 760px) { .contact-block { grid-template-columns: 1fr; } }

.btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  background: var(--clay);
  color: #fff !important;
  padding: 10px 18px;
  border-radius: 3px;
  border: none;
}
.btn:hover { background: var(--moss-dark); color: #fff !important; }

/* ---------------- Utility ---------------- */

.center { text-align: center; }
.muted { color: var(--ink-faint); }
.mt-0 { margin-top: 0; }