/* ==========================================================================
   Public showcase - masthead, hero, project cards, footer.
   Restrained academic layout: strong typography, generous space, large imagery.
   ========================================================================== */

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 20;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  padding-block: var(--space-4);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  line-height: 1.25;
}

/* Official Olivet University crest, cropped from the supplied header asset. */
.wordmark__crest {
  height: 2.6rem;
  width: auto;
}

.wordmark__text {
  display: flex;
  flex-direction: column;
}

.wordmark__course {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--brand-ink-strong);
  letter-spacing: -0.01em;
}

.wordmark__institution {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.site-nav a {
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  padding-block: var(--space-2);
  border-bottom: 2px solid transparent;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--brand-ink-strong);
  border-bottom-color: var(--brand-accent);
}

.site-nav__divider {
  width: 1px;
  height: 1.5rem;
  background: var(--border);
}

@media (max-width: 800px) {
  .site-header__inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .site-nav {
    gap: var(--space-4);
    flex-wrap: wrap;
  }
}

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */
.hero {
  background: linear-gradient(180deg, var(--surface-muted) 0%, var(--surface) 100%);
  border-bottom: 1px solid var(--border);
  padding-block: var(--space-9) var(--space-8);
}

.hero__eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brand-accent);
  font-weight: 600;
  margin-bottom: var(--space-4);
}

.hero h1 {
  max-width: 18ch;
  margin-bottom: var(--space-5);
}

.hero__lede {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 60ch;
  margin-bottom: var(--space-6);
}

.hero__byline {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--text);
  border-left: 3px solid var(--brand-gold);
  padding-left: var(--space-4);
}

.hero__byline span {
  display: block;
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   Section headers
   -------------------------------------------------------------------------- */
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--border);
}

.section-head h2 {
  margin-bottom: 0;
}

.section-head p {
  margin: 0;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   Project cards
   -------------------------------------------------------------------------- */
.project-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.18s ease, box-shadow 0.18s ease,
    transform 0.18s ease;
}

.project-card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.project-card__media {
  aspect-ratio: 16 / 9;
  background: var(--surface-sunken);
  display: grid;
  place-items: center;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.project-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-card__placeholder {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--border-strong);
  letter-spacing: 0.08em;
}

.project-card__body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}

.project-card__title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin: 0;
  line-height: 1.3;
}

.project-card__title a {
  text-decoration: none;
  color: var(--brand-ink-strong);
}

.project-card__title a:hover {
  color: var(--brand-accent);
}

.project-card__summary {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin: 0;
  flex: 1;
}

.project-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border);
}

/* --------------------------------------------------------------------------
   Filters
   -------------------------------------------------------------------------- */
.filter-bar {
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-6);
}

.filter-bar__grid {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 190px), 1fr));
  align-items: end;
}

.filter-bar__actions {
  display: flex;
  gap: var(--space-3);
  align-items: center;
  margin-top: var(--space-4);
}

/* --------------------------------------------------------------------------
   Project detail
   -------------------------------------------------------------------------- */
.project-hero {
  border-bottom: 1px solid var(--border);
  padding-block: var(--space-7);
  background: var(--surface-muted);
}

.project-layout {
  display: grid;
  gap: var(--space-7);
  grid-template-columns: minmax(0, 2fr) minmax(260px, 1fr);
  padding-block: var(--space-7);
}

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

.project-aside .card + .card {
  margin-top: var(--space-4);
}

.video-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #000;
}

.video-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.feature-list {
  padding-left: 1.1rem;
  margin: 0;
}

.feature-list li {
  margin-bottom: var(--space-2);
}

/* --------------------------------------------------------------------------
   Cohort cards
   -------------------------------------------------------------------------- */
.cohort-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.cohort-card h3 {
  margin-bottom: 0;
}

.cohort-card__term {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--brand-accent);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   Pagination
   -------------------------------------------------------------------------- */
.pagination {
  display: flex;
  gap: var(--space-3);
  align-items: center;
  justify-content: center;
  margin-top: var(--space-7);
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
  margin-top: var(--space-9);
  border-top: 1px solid var(--border);
  background: var(--brand-ink-strong);
  color: var(--text-inverse);
  padding-block: var(--space-7);
}

.site-footer a {
  color: var(--text-inverse);
  opacity: 0.85;
}

.site-footer a:hover {
  opacity: 1;
  color: var(--text-inverse);
}

/* Full header asset: crest plus white wordmark, designed for dark grounds. */
.site-footer__logo {
  display: block;
  height: 2.75rem;
  width: auto;
  max-width: 100%;
  margin-bottom: var(--space-6);
}

.site-footer__grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr));
}

.site-footer h4 {
  color: var(--text-inverse);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
  opacity: 0.7;
  font-family: var(--font-body);
}

.site-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-2);
  font-size: 0.92rem;
}

.site-footer__legal {
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 0.85rem;
  opacity: 0.75;
}

.site-footer__legal p {
  margin: 0;
  max-width: none;
}

/* Participant credits on the public project page (Phase 3). */
.participant-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-4);
}

.participant-list li {
  padding-left: var(--space-4);
  border-left: 3px solid var(--brand-gold);
}

.participant-list__role {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.participant-list p {
  margin: var(--space-2) 0 0;
  color: var(--text-muted);
}

/* Screenshot strip on the public project page (Phase 5). */
.screenshot-grid {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  margin-bottom: var(--space-6);
}

.screenshot {
  margin: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
}

.screenshot img {
  display: block;
  width: 100%;
  height: auto;
}

.screenshot figcaption {
  padding: var(--space-3) var(--space-4);
  font-size: 0.85rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}