/* ==========================================================================
   Kizazi Kijacho — shared stylesheet
   Design system per site mockup: one typeface (Source Sans), four
   background bands (white / pale blue / warm grey / navy), square corners
   throughout, colour drawn from the KK logo.
   ========================================================================== */

:root {
  /* Colour */
  --navy: #123D6E;
  --light-blue: #AFCAE6;
  --pale-band: #EAF1F8;
  --body-text: #3C4A59;
  --secondary-text: #5A6875;
  --warm-grey: #F5F6F7;
  --dashed-bg: #F7FAFD;
  --dashed-border: #AFCAE6;
  --divider: #E1E5EA;
  --card-border: #D8DDE3;
  --uzh-blue: #0028A5;
  --white: #FFFFFF;

  /* Layout */
  --content-width: 1040px;
  --page-pad: 20px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  font-family: "Source Sans 3", "Source Sans Pro", -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--body-text);
  background: var(--white);
  font-size: 17px;
  line-height: 1.7;
  font-weight: 400;
}

h1, h2, h3, h4, p, ul, ol, dl, figure { margin: 0; }

a {
  color: var(--navy);
  text-decoration: underline;
  text-underline-offset: 2px;
}
a:hover { color: var(--uzh-blue); }

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

.content {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--page-pad);
}

/* Skip link (accessibility) */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--navy);
  color: var(--white);
  padding: 12px 20px;
  z-index: 1000;
  text-decoration: none;
}
.skip-link:focus {
  left: 0;
}

/* Visible keyboard focus everywhere */
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--uzh-blue);
  outline-offset: 2px;
}

/* ---------- Host strip + header ---------- */
.host-strip {
  background: var(--uzh-blue);
  color: var(--white);
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 8px var(--page-pad);
  text-align: center;
}

.site-header {
  border-bottom: 1px solid var(--divider);
  background: var(--white);
}
.site-header .content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 16px;
  padding-bottom: 16px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--navy);
}
.brand-mark {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.brand-name {
  font-size: 19px;
  font-weight: 600;
  color: var(--navy);
}
.brand-tagline {
  font-size: 12px;
  color: var(--secondary-text);
}
.brand-logo {
  height: 40px;
  width: auto;
  display: block;
}

.brand-icon {
  height: 34px;
  width: auto;
  display: block;
}
.brand-wordmark {
  font-size: 20px;
  font-weight: 700;
  color: var(--navy);
  white-space: nowrap;
}
.footer-brand .brand-wordmark { color: var(--white); }

.main-nav ul {
  list-style: none;
  display: flex;
  gap: 28px;
  padding: 0;
  flex-wrap: wrap;
}
.main-nav a {
  font-size: 16px;
  font-weight: 600;
  color: var(--navy);
  text-decoration: none;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
}
.main-nav a:hover { border-bottom-color: var(--light-blue); }
.main-nav a[aria-current="page"] {
  border-bottom-color: var(--navy);
}

/* ---------- Bands ---------- */
.band-white { background: var(--white); }
.band-pale { background: var(--pale-band); }
.band-grey { background: var(--warm-grey); }
.band-navy { background: var(--navy); color: var(--white); }

section {
  padding: 56px 0;
}
section.tight { padding: 40px 0; }
section.wide { padding: 76px 0; }

/* ---------- Small label / eyebrow ---------- */
.label {
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--secondary-text);
}
.band-navy .label,
.hero .label { color: var(--light-blue); }

/* ---------- Hero (Overview) ---------- */
.hero {
  background:
    linear-gradient(rgba(18,61,110,0.25), rgba(18,61,110,0.25)),
    url('assets/photos/field/Field_Photo_3.jpg') center/cover no-repeat;
  color: var(--white);
  padding: 64px 0 0;
}
.hero-inner {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding-bottom: 56px;
}
.hero-logo-plate {
  background: var(--white);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  width: fit-content;
}
.hero-logo-plate img { height: 40px; width: auto; }
.hero h1 {
  font-size: 56px;
  font-weight: 300;
  line-height: 1.15;
  max-width: 24ch;
}
.hero p.lede {
  font-size: 20px;
  font-weight: 400;
  max-width: 70ch;
  color: #E7EEF7;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Shallow banner used on inner pages */
.page-banner {
  background: var(--navy);
  color: var(--white);
  padding: 48px 0;
}
.page-banner h1 {
  font-size: 44px;
  font-weight: 300;
  line-height: 1.2;
}
.page-banner .label { margin-bottom: 10px; display: block; }

/* Pale intro band under a page banner, or standalone page title */
.page-intro {
  background: var(--pale-band);
  padding: 48px 0;
}
.page-intro .intro-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: start;
}
.page-intro h1 {
  font-size: 46px;
  font-weight: 300;
  color: var(--navy);
  margin-bottom: 8px;
}
.page-intro p { font-size: 17px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 14px 24px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
}
.btn-primary {
  background: var(--white);
  color: var(--navy);
}
.btn-primary:hover { background: var(--light-blue); color: var(--navy); }
.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: var(--white);
}
.btn-outline:hover { background: rgba(255,255,255,0.12); }
.btn-navy {
  background: var(--navy);
  color: var(--white);
}
.btn-navy:hover { background: #0d2c50; }
.btn-outline-navy {
  background: transparent;
  color: var(--navy);
  border-color: var(--navy);
}
.btn-outline-navy:hover { background: var(--pale-band); }

/* ---------- Two-column text layout ---------- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
}
.two-col h2 {
  font-size: 26px;
  font-weight: 600;
  color: var(--navy);
  border-bottom: 2px solid var(--navy);
  padding-bottom: 12px;
  margin-bottom: 20px;
}

/* ---------- Three / four column layout ---------- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.grid-5 {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.study-card {
  border-top: 3px solid var(--navy);
  padding-top: 16px;
}
.study-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 10px;
}
.study-card p { font-size: 16px; color: var(--secondary-text); }

/* ---------- Featured study (image + text) ---------- */
.featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.chip-row { display: flex; gap: 8px; margin-bottom: 14px; }
.featured h3 {
  font-size: 24px;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 12px;
}

/* ---------- Status chips ---------- */
.chip {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 3px 9px;
}
.chip-analysis { background: var(--navy); color: var(--white); }
.chip-planned { background: var(--pale-band); color: var(--navy); border: 1px solid var(--light-blue); }
.chip-complete { background: var(--white); color: var(--navy); border: 1px solid var(--navy); }

/* ---------- Placeholder photo block ---------- */
.photo-placeholder {
  background: var(--dashed-bg);
  border: 1px dashed var(--dashed-border);
  color: var(--secondary-text);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-align: center;
  font-size: 14px;
  padding: 24px;
  min-height: 220px;
}
.photo-placeholder svg { width: 28px; height: 28px; opacity: 0.6; }
.photo-placeholder .ph-caption { font-weight: 600; color: var(--body-text); }
.photo-placeholder.portrait {
  border-radius: 50%;
  min-height: 0;
  width: 160px;
  height: 160px;
  margin: 0 auto;
  object-fit: cover;
  display: block;
}
.portrait-photo {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  margin: 0 auto;
  padding: 0;
  border: none;
  background: none;
}
.photo-placeholder.wide { min-height: 320px; }
.photo-placeholder.small { min-height: 140px; }

/* ---------- Video block ---------- */
.video-block {
  background: var(--navy);
  color: var(--white);
  min-height: 320px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-align: center;
}
.video-block .play {
  width: 56px;
  height: 56px;
  border: 2px solid var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.video-note {
  font-size: 14px;
  color: var(--secondary-text);
  margin-top: 10px;
}

/* ---------- Timeline ---------- */
.timeline {
  border-top: 3px solid var(--navy);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding-top: 20px;
}
.timeline .year {
  font-size: 19px;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 8px;
}
.timeline p { font-size: 16px; color: var(--secondary-text); }

/* ---------- Research: collapsible study rows ---------- */
.study-group { margin-bottom: 48px; }
.study-group-title {
  font-size: 26px;
  font-weight: 600;
  color: var(--navy);
}
.study-group-sub {
  font-size: 16px;
  color: var(--secondary-text);
  margin-bottom: 4px;
}
.study-group-rule {
  border: none;
  border-top: 2px solid var(--navy);
  margin: 12px 0 0;
}
.study-row {
  border-bottom: 1px solid var(--divider);
  padding: 20px 0;
}
.study-row-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 32px;
}
.study-row summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 20px;
  font-weight: 600;
  color: var(--navy);
}
.study-row summary::-webkit-details-marker { display: none; }
.study-row summary::after {
  content: "+";
  margin-left: auto;
  font-weight: 400;
  font-size: 22px;
  color: var(--secondary-text);
}
.study-row[open] summary::after { content: "–"; }
.study-body {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 32px;
  margin-top: 14px;
}
.study-facts {
  border-left: 2px solid var(--light-blue);
  padding-left: 20px;
  font-size: 15px;
}
.study-facts dt {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--secondary-text);
  margin-top: 12px;
}
.study-facts dt:first-child { margin-top: 0; }
.study-facts dd { margin: 2px 0 0; }

/* ---------- People ---------- */
.leader-row {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 32px;
  padding: 28px 0;
  border-bottom: 1px solid var(--divider);
  align-items: center;
}
.leader-row h3 { font-size: 21px; font-weight: 600; color: var(--navy); }
.leader-role { font-size: 15px; color: var(--secondary-text); margin: 4px 0 10px; }
.leader-bio { font-style: italic; color: var(--secondary-text); margin-bottom: 10px; }

.collab-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 40px;
}
.collab-cell {
  border-bottom: 1px solid var(--divider);
  padding-bottom: 16px;
}
.collab-cell summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: 64px 1fr auto;
  gap: 14px;
  align-items: center;
}
.collab-cell summary::-webkit-details-marker { display: none; }
.collab-cell .ph-mini {
  width: 64px; height: 64px; border-radius: 50%;
  object-fit: cover; object-position: center 20%; display: block;
}
.collab-cell h4 { font-size: 17px; font-weight: 600; color: var(--navy); }
.collab-cell .inst { font-size: 14px; color: var(--secondary-text); }
.collab-cell summary::after { content: "+"; font-size: 18px; color: var(--secondary-text); }
.collab-cell[open] summary::after { content: "–"; }
.collab-body { padding: 12px 0 0 78px; font-size: 15px; }
.collab-links a { margin-right: 14px; font-size: 14px; }
.add-cell {
  background: var(--dashed-bg);
  border: 1px dashed var(--dashed-border);
  padding: 16px;
  font-size: 15px;
  color: var(--secondary-text);
  display: flex;
  align-items: center;
}
.add-cell a { font-weight: 700; }

/* ---------- Partners ---------- */
.partner-card {
  border: 1px solid var(--card-border);
  padding: 16px;
  text-align: left;
}
.partner-card .logo-slot {
  background: var(--dashed-bg);
  border: 1px dashed var(--dashed-border);
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--secondary-text);
  margin-bottom: 12px;
}
.partner-card .logo-img {
  background: var(--white);
  min-height: 96px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  padding: 14px;
}
.partner-card .logo-img img {
  max-height: 72px;
  max-width: 100%;
  width: auto;
  object-fit: contain;
}
.partner-card.logo-only h4 { font-size: 15px; }
.partner-card h4 { font-size: 17px; font-weight: 600; color: var(--navy); }
.partner-card p { font-size: 14px; color: var(--secondary-text); margin-top: 4px; }

.past-partner {
  padding: 14px 0;
  border-bottom: 1px solid var(--divider);
}
.past-partner .name { font-weight: 600; color: var(--navy); }
.past-partner .role { font-size: 14px; color: var(--secondary-text); }

/* ---------- Outputs ---------- */
.output-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--divider);
  align-items: start;
}
.output-row h3 { font-size: 19px; font-weight: 600; color: var(--body-text); }
.output-row .meta { font-size: 15px; color: var(--secondary-text); margin-top: 4px; }
.output-links a { margin-left: 16px; font-size: 15px; font-weight: 600; white-space: nowrap; }
.output-links a:first-child { margin-left: 0; }
.output-group-title {
  font-size: 26px;
  font-weight: 600;
  color: var(--navy);
  border-bottom: 2px solid var(--navy);
  padding-bottom: 10px;
  margin-bottom: 4px;
}

/* ---------- Add-item tile ---------- */
.add-tile {
  background: var(--dashed-bg);
  border: 1px dashed var(--dashed-border);
  padding: 18px;
  font-size: 15px;
  color: var(--secondary-text);
}
.add-tile a { font-weight: 700; }

/* ---------- Legal page ---------- */
.legal-block { margin-bottom: 48px; }
.legal-block h2 {
  font-size: 26px;
  font-weight: 600;
  color: var(--navy);
  border-bottom: 2px solid var(--navy);
  padding-bottom: 10px;
  margin-bottom: 24px;
}
.legal-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px 56px;
}
.legal-two-col h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 6px;
}
.legal-note {
  background: var(--pale-band);
  padding: 20px 24px;
  font-size: 16px;
  margin-top: 24px;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy);
  color: var(--white);
  margin-top: 0;
}
.footer-main {
  padding: 48px 0 32px;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1fr;
  gap: 32px;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: flex-start;
}
.footer-logo-plate {
  background: var(--white);
  display: inline-flex;
  padding: 8px 12px;
}
.footer-logo-plate img { height: 30px; width: auto; display: block; }
.footer-brand-text { font-size: 15px; color: #C9D6E5; margin: 0; }
.footer-col h5 {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--light-blue);
  margin-bottom: 14px;
}
.footer-col ul { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-col a {
  overflow-wrap: break-word;
  color: var(--white);
  font-size: 15px;
  text-decoration: underline;
}
.footer-legal-row {
  border-top: 1px solid rgba(255,255,255,0.2);
  padding: 16px var(--page-pad);
}
.footer-legal-row .content {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-legal-row a { color: var(--white); font-size: 14px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.2);
  padding: 16px var(--page-pad);
  font-size: 14px;
  color: #C9D6E5;
}
.footer-bottom .content {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .two-col,
  .featured,
  .page-intro .intro-grid,
  .study-row-layout,
  .study-body,
  .leader-row,
  .collab-grid { grid-template-columns: 1fr; }
  .grid-3, .grid-4, .grid-5 { grid-template-columns: repeat(2, 1fr); }
  .timeline { grid-template-columns: repeat(2, 1fr); }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .footer-main > div:first-child { grid-column: 1 / -1; }
  .hero h1 { font-size: 40px; }
  .page-intro h1, .page-banner h1 { font-size: 32px; }
  .main-nav ul { gap: 16px; }
  .collab-cell summary { grid-template-columns: 48px 1fr auto; }
  .collab-body { padding-left: 62px; }
  .leader-row { grid-template-columns: 100px 1fr; }
  .portrait-photo { width: 100px; height: 100px; }
  .collab-cell .ph-mini { width: 48px; height: 48px; }
}
@media (max-width: 560px) {
  .grid-3, .grid-4, .grid-5 { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; }
  .main-nav ul { gap: 12px 16px; }
  .hero h1 { font-size: 32px; }
}