:root {
  --navy: #1b3a6b;
  --navy-dark: #142c52;
  --gold: #ffc72c;
  --gold-hover: #f0b800;
  --bg: #f7f8fa;
  --card-bg: #ffffff;
  --text: #1c1e21;
  --text-muted: #5b6470;
  --border: #e1e4e9;
  --radius: 8px;
  --container-width: 1100px;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.4;
}

a {
  color: var(--navy);
}

/* Shared page container — used by the header, main content, and footer so
   everything lines up on the same left/right edges. */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

header.site-header {
  background: var(--navy);
  color: #fff;
  padding: 1.1rem 0;
  border-bottom: 3px solid var(--gold);
}

header.site-header .header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

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

header.site-header .site-logo {
  height: 42px;
  width: auto;
  display: block;
}

header.site-header h1 {
  margin: 0;
  font-size: 1.4rem;
}

header.site-header a {
  color: #fff;
  text-decoration: none;
}

header.site-header .back-link {
  font-size: 0.95rem;
  color: var(--gold);
}

main {
  flex: 1 0 auto;
  padding: 1.5rem 0;
}

.year-section {
  margin-bottom: 2rem;
}

.year-section h2 {
  display: inline-block;
  font-size: 1.1rem;
  color: var(--text);
  font-weight: 700;
  margin: 0 0 0.9rem;
  padding-bottom: 0.35rem;
  border-bottom: 2px solid var(--gold);
}

.week-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

.week-card {
  display: block;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.15s ease;
}

.week-card:hover {
  border-color: var(--gold);
}

.week-card .cover {
  aspect-ratio: 4 / 3;
  background: var(--border);
  display: block;
  width: 100%;
  object-fit: cover;
}

.week-card .card-body {
  padding: 0.75rem 0.9rem;
}

.week-card .card-title {
  font-weight: 600;
  margin: 0 0 0.3rem;
}

.week-card .card-count {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 0;
}

.badge-coming-soon {
  display: inline-block;
  background: var(--gold);
  color: var(--navy-dark);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
}

.empty-state {
  color: var(--text-muted);
  padding: 2rem 0;
}

.coming-soon-banner {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-left: 4px solid var(--gold);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  color: var(--text-muted);
}

/* Week gallery page */

.week-title {
  margin: 0 0 1rem;
  font-size: 1.3rem;
}

.level-tabs {
  display: flex;
  gap: 0.5rem;
  border-bottom: 2px solid var(--border);
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.level-tab {
  background: none;
  border: none;
  padding: 0.6rem 1rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
}

.level-tab.active {
  color: var(--navy);
  border-bottom-color: var(--gold);
}

.level-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  gap: 1rem;
  flex-wrap: wrap;
}

.level-toolbar .photo-count {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--navy);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 0.55rem 1rem;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}

.btn:hover {
  background: var(--navy-dark);
}

.btn.btn-gold {
  background: var(--gold);
  color: var(--navy-dark);
}

.btn.btn-gold:hover {
  background: var(--gold-hover);
}

.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.5rem;
}

.photo-grid button {
  padding: 0;
  border: none;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 1 / 1;
}

.photo-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Lightbox */

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(10, 12, 16, 0.92);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: 1rem;
}

.lightbox.open {
  display: flex;
}

.lightbox-content {
  max-width: 100%;
  max-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.lightbox img {
  max-width: 100%;
  max-height: 75vh;
  border-radius: 4px;
}

.lightbox-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.lightbox-nav {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 2.5rem;
  height: 2.5rem;
  font-size: 1.2rem;
  cursor: pointer;
}

.lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.8rem;
  cursor: pointer;
  line-height: 1;
}

footer.site-footer {
  flex-shrink: 0;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
  padding: 1.5rem 0;
}

@media (max-width: 480px) {
  main {
    padding: 1rem 0;
  }

  .container {
    padding: 0 1rem;
  }

  .photo-grid {
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  }
}