/* ==========================================================================
   Animal Affairs Hub — Design System
   Brand palette and type are drawn from the existing identity sheet.
   Swap the tokens below to re-skin the entire site.
   ========================================================================== */

:root {
  /* ---- Brand colors (from identity sheet) ---- */
  --color-ochre: #C16A2B;
  --color-clay: #A0522D;
  --color-umber: #5B3A29;
  --color-charcoal: #2E2A26;
  --color-stone: #E8E1D5;

  /* ---- Semantic roles (change these to re-theme) ---- */
  --color-primary: var(--color-umber);
  --color-secondary: var(--color-clay);
  --color-accent: var(--color-ochre);

  --color-bg: var(--color-stone);
  --color-bg-paper: #FBF9F4;
  --color-surface: #FFFFFF;
  --color-ink: var(--color-charcoal);
  --color-ink-soft: #5A5650;
  --color-line: #D8CFBF;
  --color-line-strong: #B8AC95;

  /* ---- Type ---- */
  --font-display: "freight-display-pro", "Freight Display", Georgia, "Iowan Old Style", serif;
  --font-body: "source-sans-3", "Source Sans 3", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "ibm-plex-mono", "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;

  /* ---- Scale ---- */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6.5rem;

  --radius-sm: 2px;
  --radius-md: 4px;

  --max-width: 1180px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---- Reset ---- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  margin: 0;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.4rem, 5vw, 4.2rem); }
h2 { font-size: clamp(1.8rem, 3vw, 2.6rem); }
h3 { font-size: 1.35rem; }

p { margin: 0 0 var(--space-2); color: var(--color-ink-soft); }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 5vw, 4rem);
  width: 100%;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-secondary);
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
}

.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: currentColor;
}

button { font-family: inherit; cursor: pointer; }

/* ==========================================================================
   Header / Nav
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(232, 225, 213, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) 0;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.nav-brand img {
  height: 38px;
  width: auto;
}

.nav-brand-text {
  font-family: var(--font-display);
  font-size: 1.18rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.1;
}

.nav-brand-text span {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  color: var(--color-secondary);
  text-transform: uppercase;
  margin-top: 2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-size: 0.93rem;
  font-weight: 600;
  color: var(--color-ink-soft);
  position: relative;
  padding: 4px 0;
  transition: color 0.2s var(--ease);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-ink);
}

.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--color-accent);
}

.nav-cta {
  display: flex;
  gap: 0.7rem;
  align-items: center;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  width: 32px;
  height: 24px;
  position: relative;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-ink);
  transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
}
.nav-toggle span { top: 11px; }
.nav-toggle span::before { top: -8px; }
.nav-toggle span::after { top: 8px; }

.nav-toggle.is-open span { background: transparent; }
.nav-toggle.is-open span::before { transform: translateY(8px) rotate(45deg); }
.nav-toggle.is-open span::after { transform: translateY(-8px) rotate(-45deg); }

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.85rem 1.6rem;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: transform 0.18s var(--ease), background 0.18s var(--ease), border-color 0.18s var(--ease), color 0.18s var(--ease);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-bg-paper);
}
.btn-primary:hover { background: var(--color-ink); }

.btn-accent {
  background: var(--color-accent);
  color: #fff;
}
.btn-accent:hover { background: var(--color-clay); }

.btn-outline {
  background: transparent;
  border-color: var(--color-line-strong);
  color: var(--color-ink);
}
.btn-outline:hover { border-color: var(--color-ink); }

.btn-text {
  padding: 0.4rem 0;
  color: var(--color-secondary);
  font-weight: 600;
  border-bottom: 1px solid currentColor;
  border-radius: 0;
}
.btn-text:hover { color: var(--color-accent); }

.btn-sm { padding: 0.55rem 1.1rem; font-size: 0.82rem; }

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  padding: var(--space-6) 0 var(--space-5);
  position: relative;
  overflow: hidden;
}

.hero .container {
  padding: 0 clamp(1.5rem, 6vw, 5rem);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: var(--space-5);
  align-items: end;
}

.hero-kicker {
  margin-bottom: var(--space-2);
}

.hero h1 {
  margin: var(--space-2) 0 var(--space-3);
}

.hero h1 em {
  font-style: normal;
  color: var(--color-clay);
}

.hero-lede {
  font-size: 1.18rem;
  max-width: 46ch;
  color: var(--color-ink-soft);
}

.hero-actions {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-3);
  flex-wrap: wrap;
}

.hero-mark {
  justify-self: end;
  text-align: right;
}

.hero-mark img {
  width: 100%;
  max-width: 340px;
  margin-left: auto;
}

/* Accession ledger strip beneath hero — the "signature" element.
   Renders the hub's holdings as a running archive log. */
.ledger {
  margin-top: var(--space-5);
  border-top: 1px solid var(--color-line-strong);
  border-bottom: 1px solid var(--color-line-strong);
  padding: var(--space-3) 0;
}

.ledger-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
}

.ledger-item {
  font-family: var(--font-mono);
}

.ledger-num {
  font-family: var(--font-display);
  font-size: 2.1rem;
  font-weight: 600;
  color: var(--color-umber);
  display: block;
  line-height: 1;
}

.ledger-label {
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  display: block;
  margin-top: 0.5rem;
}

/* ==========================================================================
   Sections
   ========================================================================== */

section { padding: var(--space-5) 0; }

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

.section-head h2 { max-width: 28ch; }

.section-alt {
  background: var(--color-bg-paper);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.section-dark {
  background: var(--color-charcoal);
  color: var(--color-stone);
}
.section-dark p { color: #C9C2B5; }
.section-dark h2 { color: #fff; }
.section-dark .eyebrow { color: var(--color-ochre); }

/* ==========================================================================
   Mission statement
   ========================================================================== */

.mission {
  display: grid;
  grid-template-columns: 0.4fr 0.6fr;
  gap: var(--space-5);
}

.mission-statement {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  line-height: 1.4;
  color: var(--color-ink);
}

.mission-statement strong {
  color: var(--color-clay);
  font-weight: 600;
}

.mission-detail {
  border-left: 1px solid var(--color-line-strong);
  padding-left: var(--space-3);
}

/* ==========================================================================
   Cards — research outputs
   ========================================================================== */

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}

.doc-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.doc-card:hover {
  border-color: var(--color-line-strong);
  transform: translateY(-3px);
  box-shadow: 0 14px 30px -18px rgba(46, 42, 38, 0.35);
}

.doc-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.doc-type {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.3rem 0.55rem;
  border-radius: 100px;
  background: var(--color-bg);
  color: var(--color-umber);
  border: 1px solid var(--color-line-strong);
}

.doc-date {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--color-ink-soft);
}

.doc-card h3 {
  font-size: 1.18rem;
  line-height: 1.3;
}

.doc-theme {
  font-size: 0.85rem;
  color: var(--color-secondary);
  font-weight: 600;
}

.doc-excerpt {
  font-size: 0.92rem;
  color: var(--color-ink-soft);
  margin: 0;
}

.doc-card-foot {
  margin-top: auto;
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-line);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ==========================================================================
   Partner / funder logos
   ========================================================================== */

.logo-strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-3);
  align-items: center;
}

.logo-placeholder {
  height: 64px;
  border: 1px dashed var(--color-line-strong);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-ink-soft);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ==========================================================================
   CTA banner
   ========================================================================== */

.cta-banner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-4);
  align-items: center;
  background: var(--color-umber);
  color: var(--color-bg-paper);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-4);
}

.cta-banner h2 { color: #fff; max-width: 24ch; }
.cta-banner p { color: #D7CCBA; }

.cta-banner-actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

/* ==========================================================================
   Two-up CTA (researchers / visitors) — homepage
   ========================================================================== */

.dual-cta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.dual-cta-card {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-line);
}

.dual-cta-card.is-public {
  background: var(--color-surface);
}

.dual-cta-card.is-portal {
  background: var(--color-charcoal);
  color: var(--color-stone);
}

.dual-cta-card.is-portal h3,
.dual-cta-card.is-portal p { color: #DCD4C6; }
.dual-cta-card.is-portal h3 { color: #fff; }

.dual-cta-icon {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
  display: block;
}

.dual-cta-card h3 { margin-bottom: 0.5rem; font-size: 1.5rem; }

/* ==========================================================================
   Filters (research.html)
   ========================================================================== */

.filter-bar {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-line);
}

.filter-search {
  position: relative;
  flex: 1;
  min-width: 220px;
}

.filter-search input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.4rem;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-ink);
}

.filter-search input:focus,
input:focus, select:focus, textarea:focus, button:focus-visible, a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.filter-search-icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-ink-soft);
  font-size: 0.9rem;
}

.filter-groups {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.filter-chip-group {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.chip {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.45rem 0.85rem;
  border-radius: 100px;
  border: 1px solid var(--color-line-strong);
  background: var(--color-surface);
  color: var(--color-ink-soft);
  transition: all 0.18s var(--ease);
}

.chip:hover { border-color: var(--color-ink); color: var(--color-ink); }

.chip.is-active {
  background: var(--color-umber);
  border-color: var(--color-umber);
  color: #fff;
}

.results-meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-ink-soft);
  margin-bottom: var(--space-3);
}

.empty-state {
  text-align: center;
  padding: var(--space-5) var(--space-3);
  border: 1px dashed var(--color-line-strong);
  border-radius: var(--radius-md);
  display: none;
}

.empty-state.is-visible { display: block; }

.empty-state h3 { margin-bottom: 0.5rem; }

/* ==========================================================================
   Forms (upload.html / contact.html)
   ========================================================================== */

.form-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-4);
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.55fr 0.45fr;
  gap: var(--space-4);
}

.field {
  margin-bottom: var(--space-3);
}

.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.45rem;
  color: var(--color-ink);
}

.field-hint {
  font-size: 0.8rem;
  color: var(--color-ink-soft);
  margin-top: 0.4rem;
}

.field input[type="text"],
.field input[type="email"],
.field input[type="password"],
.field select,
.field textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-sm);
  background: var(--color-bg-paper);
  font-family: var(--font-body);
  font-size: 0.96rem;
  color: var(--color-ink);
}

.field textarea { resize: vertical; min-height: 120px; }

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.dropzone {
  border: 2px dashed var(--color-line-strong);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  text-align: center;
  background: var(--color-bg-paper);
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
  cursor: pointer;
}

.dropzone.is-dragover {
  border-color: var(--color-accent);
  background: #FBF1E8;
}

.dropzone-icon {
  font-size: 1.8rem;
  margin-bottom: var(--space-1);
}

.dropzone strong { color: var(--color-clay); }

.file-list {
  margin-top: var(--space-2);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.file-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.6rem 0.9rem;
  background: var(--color-bg-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
}

.file-item-remove {
  background: none;
  border: none;
  color: var(--color-ink-soft);
  font-size: 0.85rem;
  font-weight: 600;
}
.file-item-remove:hover { color: var(--color-clay); }

.gate-screen {
  max-width: 460px;
  margin: 0 auto;
  text-align: center;
  padding: var(--space-5) var(--space-3);
}

.gate-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-bg-paper);
  border: 1px solid var(--color-line-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-3);
  font-size: 1.4rem;
  color: var(--color-umber);
}

.notice-box {
  border: 1px solid var(--color-line-strong);
  background: var(--color-bg-paper);
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-3);
  font-size: 0.88rem;
  color: var(--color-ink-soft);
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
}

.notice-box-icon { color: var(--color-accent); font-weight: 700; }

.form-success {
  display: none;
  text-align: center;
  padding: var(--space-5) var(--space-3);
}
.form-success.is-visible { display: block; }
.form-success .gate-icon { color: var(--color-secondary); }

/* ==========================================================================
   Team / about
   ========================================================================== */

.theme-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}

.theme-item {
  border-top: 1px solid var(--color-line-strong);
  padding-top: var(--space-2);
}

.theme-item .eyebrow { margin-bottom: 0.6rem; }

.person-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}

.person-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-3);
}

.person-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-bg-paper);
  border: 1px solid var(--color-line-strong);
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--color-umber);
}

.person-role {
  font-size: 0.82rem;
  color: var(--color-secondary);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background: var(--color-charcoal);
  color: #C9C2B5;
  padding: var(--space-5) 0 var(--space-3);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid #46413A;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: var(--space-2);
}

.footer-brand img { height: 32px; }

.footer-brand-text {
  font-family: var(--font-display);
  color: #fff;
  font-size: 1.1rem;
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #8F897E;
  margin-bottom: var(--space-2);
  font-weight: 600;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-col a { font-size: 0.9rem; transition: color 0.2s var(--ease); }
.footer-col a:hover { color: #fff; }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  padding-top: var(--space-3);
  font-size: 0.82rem;
  color: #8F897E;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ==========================================================================
   Page header (interior pages)
   ========================================================================== */

.page-header {
  padding: var(--space-5) 0 var(--space-4);
  border-bottom: 1px solid var(--color-line);
}

.page-header h1 { margin: var(--space-2) 0 var(--space-2); }
.page-header p { max-width: 60ch; font-size: 1.08rem; }

/* ==========================================================================
   Photography — cave art + contemporary human-animal imagery
   ========================================================================== */

.hero-photo {
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4 / 5;
}

.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.photo-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2);
}

.photo-band figure {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4 / 5;
  position: relative;
}

.photo-band img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s var(--ease);
}

.photo-band figure:hover img { transform: scale(1.04); }

.photo-band figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: var(--space-2);
  background: linear-gradient(to top, rgba(46,42,38,0.78), transparent);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.photo-caption-line {
  text-align: center;
  max-width: 62ch;
  margin: var(--space-3) auto 0;
  font-size: 0.95rem;
  color: var(--color-ink-soft);
}

/* ---- Tile grid — bold-image navigation tiles, homepage ---- */

.tile-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}

.tile {
  position: relative;
  display: block;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  isolation: isolate;
}

.tile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s var(--ease);
}

.tile::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(46,42,38,0.92) 0%, rgba(46,42,38,0.35) 48%, rgba(46,42,38,0.02) 75%);
  z-index: 1;
  transition: background 0.3s var(--ease);
}

.tile:hover img { transform: scale(1.06); }

.tile-content {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: var(--space-3);
  z-index: 2;
}

.tile-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ochre);
  margin-bottom: 0.5rem;
  display: block;
}

.tile-title {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.4vw, 1.7rem);
  color: #fff;
  margin: 0 0 0.4rem;
  line-height: 1.15;
}

.tile-sub {
  font-size: 0.9rem;
  color: #D7CCBA;
  margin: 0;
  max-width: 38ch;
}

.tile-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #fff;
  font-weight: 600;
}

.tile-cta::after {
  content: "→";
  transition: transform 0.2s var(--ease);
}

.tile:hover .tile-cta::after { transform: translateX(4px); }

@media (max-width: 720px) {
  .tile-grid { grid-template-columns: 1fr; }
  .tile { aspect-ratio: 16 / 11; }
}

.photo-feature {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--space-4);
  align-items: center;
}

.photo-feature figure {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.photo-feature img {
  width: 100%;
  display: block;
}

.photo-feature.is-reversed { grid-template-columns: 1.1fr 0.9fr; }
.photo-feature.is-reversed figure { order: 2; }

@media (max-width: 980px) {
  .photo-band { grid-template-columns: repeat(3, 1fr); gap: 0.6rem; }
  .photo-feature { grid-template-columns: 1fr; }
  .photo-feature.is-reversed figure { order: 0; }
}

@media (max-width: 620px) {
  .photo-band { grid-template-columns: repeat(3, 1fr); gap: 0.4rem; }
  .photo-band figcaption { display: none; }
}

/* ==========================================================================
   Reveal-on-scroll
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

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

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-photo { aspect-ratio: 16 / 10; margin-top: var(--space-3); }
  .hero-mark { justify-self: start; text-align: left; margin-top: var(--space-3); }
  .hero-mark img { margin-left: 0; max-width: 220px; }
  .mission { grid-template-columns: 1fr; }
  .mission-detail { border-left: none; border-top: 1px solid var(--color-line-strong); padding-left: 0; padding-top: var(--space-2); }
  .contact-grid { grid-template-columns: 1fr; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .dual-cta { grid-template-columns: 1fr; }
  .theme-list { grid-template-columns: 1fr; }
  .person-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .logo-strip { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 720px) {
  .nav-brand { order: 1; }
  .nav-toggle { order: 2; display: block; }
  .nav-links { order: 3; display: none; }
  .nav-cta { order: 4; display: none; }

  .nav.is-open {
    flex-wrap: wrap;
    row-gap: var(--space-2);
  }
  .nav.is-open .nav-links,
  .nav.is-open .nav-cta {
    display: flex;
    flex-direction: column;
    width: 100%;
    gap: 0.7rem;
  }
  .nav.is-open .nav-links {
    padding-top: var(--space-2);
    border-top: 1px solid var(--color-line);
  }
  .nav.is-open .nav-cta .btn { width: 100%; justify-content: center; }
  .card-grid { grid-template-columns: 1fr; }
  .ledger-row { grid-template-columns: repeat(2, 1fr); gap: var(--space-3) var(--space-2); }
  .cta-banner { grid-template-columns: 1fr; text-align: left; }
  .person-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-3); }
  .field-row { grid-template-columns: 1fr; }
  .logo-strip { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  :root {
    --space-5: 3rem;
    --space-6: 4rem;
  }
  body { font-size: 16px; }
  h1 { font-size: clamp(2rem, 9vw, 2.8rem); }
  h2 { font-size: clamp(1.5rem, 7vw, 2rem); }
  .hero .container { padding: 0 1.25rem; }
  .hero-lede { font-size: 1.05rem; }
  .hero-actions .btn,
  .dual-cta-card > div { width: 100%; justify-content: center; }
  .ledger-row { grid-template-columns: repeat(2, 1fr); }
  .nav-brand-text { font-size: 1.02rem; }
  .nav-cta .btn { padding: 0.6rem 0.9rem; font-size: 0.8rem; }
  .cta-banner { padding: var(--space-3); }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  section { padding: var(--space-5) 0; }
}