/* ==========================================================
   2026 Rice GIS Showcase
   ========================================================== */

:root {
  --rice-blue: #00205b;
  --rice-blue-2: #0b3478;
  --rice-gray: #7c7e7f;
  --accent: #e8a33b;
  --ink: #16213a;
  --ink-soft: #4a5468;
  --paper: #ffffff;
  --tint: #f3f5f9;
  --line: #dde2ea;

  --tag-talk: #2d6cdf;
  --tag-student: #1f9d84;
  --tag-panel: #8a5cd6;
  --tag-break: #7c7e7f;
  --tag-contest: #e8a33b;

  --radius: 14px;
  --shadow: 0 1px 2px rgba(0, 32, 91, .06), 0 8px 24px rgba(0, 32, 91, .08);
  --serif: "Source Serif 4", Georgia, serif;
  --sans: "Libre Franklin", system-ui, -apple-system, "Segoe UI", sans-serif;
  --header-h: 68px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }

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

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

h1, h2, h3 { font-family: var(--serif); color: var(--rice-blue); line-height: 1.15; margin: 0 0 .5em; }
h2 { font-size: clamp(1.9rem, 3.5vw, 2.6rem); font-weight: 600; }
h3 { font-size: 1.2rem; font-weight: 600; }
p { margin: 0 0 1em; }
a { color: var(--rice-blue-2); }

.container { width: min(1160px, 100% - 32px); margin-inline: auto; }

.sr-only {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}
.skip-link {
  position: absolute; left: 16px; top: -60px; z-index: 100;
  background: var(--rice-blue); color: #fff; padding: 8px 14px; border-radius: 8px;
}
.skip-link:focus { top: 12px; }

:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4em;
  padding: .75em 1.35em; border-radius: 999px;
  font: 600 .95rem/1 var(--sans); text-decoration: none; cursor: pointer;
  border: 2px solid transparent; transition: background .2s, color .2s, border-color .2s, transform .2s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--rice-blue); color: #fff; }
.btn-primary:hover { background: var(--rice-blue-2); }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.7); }
.btn-ghost:hover { background: rgba(255,255,255,.12); }
.btn-outline { background: transparent; color: var(--rice-blue); border-color: var(--rice-blue); }
.btn-outline:hover { background: var(--rice-blue); color: #fff; }
.btn-sm { padding: .55em 1.1em; font-size: .88rem; }
.btn-block { width: 100%; }

/* ---------- Placeholders ---------- */
.placeholder, .is-placeholder, .placeholder-row > div {
  outline: 2px dashed #c3cad6; outline-offset: -2px;
}
.is-placeholder {
  background: repeating-linear-gradient(135deg, #eef1f6 0 8px, #e4e8ef 8px 16px);
  color: var(--ink-soft); pointer-events: none; transform: none !important;
}
.placeholder-text {
  display: inline-block; padding: .1em .55em; border-radius: 6px;
  background: repeating-linear-gradient(135deg, #eef1f6 0 8px, #e4e8ef 8px 16px);
  color: var(--ink-soft); font-size: .9em; font-style: italic;
}
.tbd {
  display: inline-block; margin-left: .35em; padding: .05em .5em;
  font: 600 .7rem/1.6 var(--sans); letter-spacing: .06em;
  border: 1px dashed currentColor; border-radius: 6px; opacity: .7; vertical-align: middle;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.96); backdrop-filter: saturate(1.4) blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner { height: var(--header-h); display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand img { height: 26px; width: auto; }
.site-nav { display: flex; align-items: center; gap: 28px; }
.site-nav a:not(.btn) {
  color: var(--ink); text-decoration: none; font-weight: 500; font-size: .95rem;
  padding: 6px 0; border-bottom: 2px solid transparent;
}
.site-nav a:not(.btn):hover, .site-nav a.is-current { color: var(--rice-blue); border-bottom-color: var(--accent); }

.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle .bar { display: block; width: 24px; height: 2px; background: var(--rice-blue); margin: 5px 0; transition: transform .2s, opacity .2s; }
.nav-toggle[aria-expanded="true"] .bar:nth-child(2) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .bar:nth-child(3) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .bar:nth-child(4) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: absolute; top: var(--header-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line); padding: 8px 16px 16px;
    display: none;
  }
  .site-nav.is-open { display: flex; }
  .site-nav a:not(.btn) { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .site-nav .btn { margin-top: 12px; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: min(88vh, 760px);
  display: flex; align-items: center; overflow: hidden;
  color: #fff; background: var(--rice-blue);
}
.hero-slides, .hero-slide, .hero-overlay { position: absolute; inset: 0; }
.hero-slide {
  display: block;
  opacity: 0; transform: scale(1.04);
  transition: opacity 1.4s ease, transform 8s ease;
}
.hero-slide img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.hero-slide.is-active { opacity: 1; transform: scale(1); }
.hero-overlay {
  background:
    linear-gradient(90deg, rgba(0,32,91,.94) 0%, rgba(0,32,91,.78) 42%, rgba(0,32,91,.25) 100%),
    linear-gradient(0deg, rgba(0,20,60,.5), transparent 40%);
}
.hero-content { position: relative; padding: 72px 0 96px; max-width: 1160px; }
.hero h1 { color: #fff; font-size: clamp(2.6rem, 7vw, 5rem); font-weight: 700; letter-spacing: -.01em; margin-bottom: .35em; }
.eyebrow {
  font: 600 .8rem/1 var(--sans); letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 1rem;
}
.eyebrow-dark { color: var(--rice-blue-2); }
.eyebrow-dark::before { content: ""; display: inline-block; width: 22px; height: 2px; background: var(--accent); vertical-align: middle; margin-right: 10px; }
.hero-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; font-weight: 600; font-size: 1.05rem; letter-spacing: .02em; }
.hero-meta .dot { width: 5px; height: 5px; border-radius: 50%; background: var(--accent); }
.hero-lede { max-width: 34em; font-size: 1.15rem; color: rgba(255,255,255,.88); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 40px; }
.hero .btn-primary { background: #fff; color: var(--rice-blue); }
.hero .btn-primary:hover { background: var(--accent); color: var(--rice-blue); }

.countdown { display: flex; gap: 12px; }
.countdown > div {
  min-width: 84px; padding: 12px 14px; text-align: center;
  border: 1px solid rgba(255,255,255,.25); border-radius: 12px; background: rgba(255,255,255,.06);
}
.countdown span { display: block; font: 700 1.8rem/1 var(--serif); font-variant-numeric: tabular-nums; }
.countdown small { font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; opacity: .75; }
.countdown.is-done { display: none; }

.hero-dots { position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; }
.hero-dots button {
  width: 10px; height: 10px; padding: 0; border-radius: 50%; cursor: pointer;
  border: 1px solid #fff; background: transparent; transition: background .2s, width .2s;
}
.hero-dots button[aria-selected="true"] { background: #fff; width: 26px; border-radius: 6px; }

/* ---------- Sections ---------- */
.section { padding: clamp(64px, 9vw, 110px) 0; }
.section-tint { background: var(--tint); }
.section-dark { background: var(--rice-blue); color: #fff; }
.section-dark h2, .section-dark h3 { color: #fff; }
.section-intro { max-width: 44em; color: var(--ink-soft); font-size: 1.08rem; margin-bottom: 2.25rem; }
.subhead { margin-top: 3rem; }

/* Overview */
.overview-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: clamp(32px, 6vw, 80px); align-items: start; }
.lead { font-size: 1.2rem; color: var(--ink); }
.overview-text p:not(.lead):not(.eyebrow) { color: var(--ink-soft); }
.facts {
  margin: 0; padding: 28px; border-radius: var(--radius);
  background: var(--tint); border-top: 4px solid var(--rice-blue);
  display: grid; gap: 18px;
}
.fact dt { font-size: .75rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--rice-gray); }
.fact dd { margin: 2px 0 0; font-weight: 600; color: var(--rice-blue); }

/* Cards */
.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 32px; }
.action-card {
  display: flex; flex-direction: column; align-items: flex-start;
  padding: 28px; border-radius: var(--radius); background: #fff; box-shadow: var(--shadow);
  text-decoration: none; color: var(--ink);
  transition: transform .2s, box-shadow .2s;
}
.action-card:hover { transform: translateY(-4px); box-shadow: 0 2px 4px rgba(0,32,91,.08), 0 16px 36px rgba(0,32,91,.14); }
.action-card img { width: 80px; height: 80px; margin-bottom: 16px; }
.action-card p { color: var(--ink-soft); flex: 1; }
.card-link { font-weight: 600; color: var(--rice-blue-2); }

/* People */
.people-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; align-items: start; }
.person { padding: 24px; border-radius: var(--radius); background: var(--tint); }
.person .avatar {
  width: 64px; height: 64px; border-radius: 50%; margin-bottom: 14px;
  background: repeating-linear-gradient(135deg, #dfe4ec 0 6px, #d3d9e3 6px 12px);
}
.person h3 { font-size: 1.05rem; margin-bottom: .25em; }
.person .job-title {
  font-size: .88rem; font-weight: 500; color: var(--ink-soft); margin: 0 0 .2em;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.person .role { font-size: .85rem; color: var(--rice-gray); margin-bottom: .5em; }
.person .talk { font-size: .9rem; font-style: italic; color: var(--rice-gray); margin: 0 0 .5em; }
.person { display: flex; flex-direction: column; align-items: flex-start; scroll-margin-top: calc(var(--header-h) + 16px); }
.person:target { box-shadow: 0 0 0 3px var(--accent); }
.person img.avatar { width: 72px; height: 72px; object-fit: cover; background: var(--line); }
.avatar-initials {
  display: grid; place-items: center; width: 72px !important; height: 72px !important;
  background: var(--rice-blue) !important; color: #fff; font: 600 1.4rem/1 var(--serif);
}
.person-role {
  font: 700 .7rem/1 var(--sans); letter-spacing: .1em; text-transform: uppercase;
  color: var(--rice-blue-2); margin-bottom: .6em;
}
.person h3 a { color: inherit; text-decoration: none; }
.person h3 a:hover { text-decoration: underline; text-decoration-color: var(--accent); }
.person .bio { font-size: .88rem; color: var(--ink-soft); margin: 0; }
.person .bio.is-clamped { display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }
.bio-toggle {
  margin-top: 6px; padding: 0; border: 0; background: none; cursor: pointer;
  font: 600 .85rem var(--sans); color: var(--rice-blue-2);
}
.bio-toggle:hover { text-decoration: underline; }

.bio-dialog {
  border: 0; padding: 0; border-radius: var(--radius); max-width: min(36rem, calc(100vw - 32px));
  background: #fff; color: var(--ink); box-shadow: 0 16px 48px rgba(0, 32, 91, .2);
  position: fixed;
}
.bio-dialog::backdrop { background: rgba(0, 16, 45, .55); }
.bio-dialog-inner { padding: 32px 36px 36px; }
.bio-dialog .person-role { margin-bottom: .8em; }
.bio-dialog h2 { font-size: 1.55rem; margin: 0 0 .35em; }
.bio-dialog h2[hidden] { display: none; }
.bio-dialog .job-title {
  font-size: .95rem; font-weight: 500; color: var(--ink-soft); margin: 0 0 .25em;
  display: block; -webkit-line-clamp: unset; overflow: visible;
}
.bio-dialog .role { font-size: .9rem; color: var(--rice-gray); margin: 0 0 1.1em; }
.bio-dialog .bio { font-size: 1rem; line-height: 1.55; color: var(--ink-soft); margin: 0 0 1.25em; }
.bio-dialog-close {
  position: absolute; top: 12px; right: 12px; width: 36px; height: 36px; border-radius: 50%;
  border: 0; background: var(--tint); color: var(--ink); font-size: 1.4rem; line-height: 1; cursor: pointer;
}
.bio-dialog-close:hover { background: var(--line); }
.timeline .who { color: rgba(255,255,255,.85); }
.timeline .who a { color: #fff; text-decoration-color: var(--accent); }

.logo-row { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.logo-tile {
  height: 112px; border-radius: var(--radius); display: grid; place-items: center;
  color: var(--rice-gray); font-size: .85rem; background: #fff; border: 1px solid var(--line);
}
.logo-tile a { display: grid; place-items: center; width: 100%; height: 100%; padding: 16px 20px; color: var(--rice-blue); font-weight: 600; text-decoration: none; }
.logo-tile img { max-width: 100%; max-height: 72px; width: auto; height: auto; object-fit: contain; }
.logo-tile a:hover { background: var(--tint); border-radius: inherit; }

/* Schedule */
.legend { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
.tag {
  display: inline-block; padding: .2em .7em; border-radius: 999px;
  font: 600 .72rem/1.5 var(--sans); letter-spacing: .06em; text-transform: uppercase;
  background: var(--tag-color, var(--tag-break)); color: #fff;
}
.tag-talk { --tag-color: var(--tag-talk); }
.tag-student { --tag-color: var(--tag-student); }
.tag-panel { --tag-color: var(--tag-panel); }
.tag-break { --tag-color: rgba(255,255,255,.18); }
.tag-contest { --tag-color: var(--tag-contest); color: var(--rice-blue); }

.schedule-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px 40px;
  align-items: start;
}
.schedule-period {
  font: 700 .75rem/1 var(--sans);
  letter-spacing: .12em;
  text-transform: uppercase;
  margin: 0 0 14px;
}
.section-dark .schedule-period { color: var(--accent); }
.timeline { list-style: none; margin: 0; padding: 0; }
.timeline li {
  display: grid;
  grid-template-columns: 6.75rem 1fr;
  gap: 12px;
  padding: 0 0 10px;
}
.timeline time {
  font-weight: 600; font-variant-numeric: tabular-nums; font-size: .82rem;
  color: rgba(255,255,255,.78); padding-top: 14px; line-height: 1.35;
}
.timeline li > div {
  padding: 10px 14px; border-radius: 12px; background: rgba(255,255,255,.05);
  transition: background .2s;
}
.timeline li > div:hover { background: rgba(255,255,255,.1); }
.timeline h3 { font-size: 1.05rem; margin: .35em 0 0; }
.timeline p { margin: .25em 0 0; color: rgba(255,255,255,.72); font-size: .9rem; }
.placeholder-row > div { outline-color: rgba(255,255,255,.3); }
.timeline li.is-now > div { background: rgba(232,163,59,.16); box-shadow: inset 3px 0 0 var(--accent); }
.timeline li.is-now time::after {
  content: "Now"; display: inline-block; margin-left: .4em;
  font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; color: var(--accent);
}

/* Workshops */
.workshop { display: flex; flex-direction: column; border-radius: var(--radius); overflow: hidden; background: #fff; box-shadow: var(--shadow); }
.workshop img { aspect-ratio: 16 / 9; object-fit: cover; width: 100%; background: var(--tint); }
.workshop-body { padding: 24px; display: flex; flex-direction: column; align-items: flex-start; flex: 1; }
.workshop-body p { color: var(--ink-soft); }
.workshop-body .btn { margin-top: auto; }
.workshop-num { font: 700 .75rem/1 var(--sans) !important; letter-spacing: .12em; text-transform: uppercase; color: var(--accent) !important; margin-bottom: .6em; }
.workshop-time { font-weight: 600; color: var(--rice-blue) !important; margin-bottom: .5em; }

/* Gallery */
[hidden] { display: none !important; }
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.gallery-item { margin: 0; }
.gallery-item a { display: block; border-radius: var(--radius); overflow: hidden; }
.gallery-item img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform .4s ease; }
.gallery-item a:hover img { transform: scale(1.04); }
.gallery-item figcaption { margin-top: 8px; font-size: .9rem; color: rgba(255,255,255,.75); text-transform: capitalize; }

.lightbox {
  border: 0; padding: 0; background: transparent; max-width: min(92vw, 1400px); max-height: 92vh;
  overflow: visible;
}
.lightbox::backdrop { background: rgba(0, 16, 45, .88); }
.lightbox img { max-width: 100%; max-height: 84vh; width: auto; height: auto; border-radius: 8px; margin-inline: auto; }
.lightbox-caption { color: #fff; text-align: center; margin: 12px 0 0; text-transform: capitalize; }
.lightbox-close {
  position: absolute; top: -44px; right: 0; width: 36px; height: 36px; border-radius: 50%;
  border: 0; background: rgba(255,255,255,.15); color: #fff; font-size: 1.5rem; line-height: 1; cursor: pointer;
}

/* Visit */
.visit-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: clamp(32px, 5vw, 64px); align-items: stretch; }
address { font-style: normal; font-size: 1.1rem; margin-bottom: 1.5rem; color: var(--ink-soft); }
.visit-notes { margin-top: 2rem; }
.visit-notes h3 { font-size: 1rem; margin-bottom: .3em; }
.map { min-height: 420px; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); background: #e6e9ee; }
.leaflet-popup-content { font-family: var(--sans); }
.leaflet-control-layers { font-family: var(--sans); font-size: .85rem; border-radius: 10px !important; }
.leaflet-control-layers-base label { cursor: pointer; }

/* Footer */
.site-footer { background: #001640; color: rgba(255,255,255,.8); padding: 48px 0; font-size: .95rem; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 24px; align-items: flex-end; }
.footer-inner p { margin: 0; }
.footer-title { font: 600 1.2rem/1.3 var(--serif); color: #fff; }
.footer-small { width: 100%; font-size: .82rem; opacity: .6; border-top: 1px solid rgba(255,255,255,.12); padding-top: 20px; }
.site-footer .placeholder-text { background: rgba(255,255,255,.1); color: rgba(255,255,255,.75); }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .overview-grid, .visit-grid { grid-template-columns: 1fr; }
  .cards-3 { grid-template-columns: 1fr 1fr; }
  .people-grid, .logo-row, .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .schedule-grid { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .cards-3 { grid-template-columns: 1fr; }
  .people-grid, .gallery-grid { grid-template-columns: 1fr; }
  .hero-content { padding: 48px 0 80px; }
  .countdown > div { min-width: 70px; }
  .timeline li { grid-template-columns: 1fr; gap: 4px; }
  .timeline time { padding: 0; }
  .map { min-height: 320px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}