:root {
  --accent: #2563eb;
  --accent-dark: #1e40af;
  --ink: #1f2937;
  --muted: #6b7280;
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --border: #e5e7eb;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
}

.container {
  max-width: 920px;
  margin: 0 auto;
  padding: 0 24px;
}

.site-header {
  background: linear-gradient(135deg, var(--accent-dark), var(--accent));
  color: #fff;
  padding: 64px 0 40px;
}

.site-header .eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
  font-weight: 600;
  opacity: 0.85;
  margin: 0 0 12px;
}

.site-header h1 {
  font-size: 2rem;
  line-height: 1.25;
  margin: 0 0 8px;
}

.site-header .subtitle {
  font-size: 1.1rem;
  opacity: 0.95;
  margin: 0 0 16px;
}

.site-header .meta {
  font-size: 0.95rem;
  opacity: 0.9;
  margin: 0;
}

.site-nav {
  position: sticky;
  top: 0;
  background: #fff;
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

.site-nav a {
  display: inline-block;
  padding: 14px 16px;
  color: var(--accent-dark);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.92rem;
}

.site-nav a:hover {
  background: var(--bg-soft);
}

main.container { padding: 40px 24px 64px; }

section { margin-bottom: 48px; scroll-margin-top: 56px; }

h2 {
  font-size: 1.5rem;
  margin: 0 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--border);
}

h3 { margin: 0 0 8px; font-size: 1.1rem; }

p { margin: 0 0 16px; }

.placeholder-note {
  color: var(--muted);
  font-style: italic;
}

.submission-link {
  font-weight: 600;
  font-size: 1.05rem;
  margin-top: 20px;
}

.submission-link a {
  color: var(--accent-dark);
  text-decoration: underline;
  word-break: break-all;
}

.submission-link a:hover {
  color: var(--accent);
}

.placeholder {
  border: 1px dashed var(--border);
  background: var(--bg-soft);
  border-radius: 8px;
  padding: 20px;
  color: var(--muted);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 16px;
}

#themes .card-grid {
  grid-template-columns: repeat(4, 1fr);
}

.card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
}

.card p { margin: 0; }

.org-detail {
  margin: 0;
  color: var(--muted);
}

.date-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.date-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.date-list li:last-child {
  border-bottom: none;
}

.tentative {
  color: var(--muted);
  font-style: italic;
  font-size: 0.9rem;
}

.site-footer {
  background: var(--ink);
  color: #d1d5db;
  padding: 24px 0;
  font-size: 0.9rem;
  text-align: center;
}

.site-footer p { margin: 0; }

@media (max-width: 600px) {
  .site-header h1 { font-size: 1.5rem; }
  .site-nav a { padding: 12px 10px; font-size: 0.85rem; }
}