:root {
  --bg-body: #f5f5f7;
  --bg-header: #002147;        /* deep academic blue */
  --bg-header-alt: #ffffff;
  --bg-section: #ffffff;
  --bg-section-alt: #f1f3f6;
  --bg-card: #ffffff;
  --border-card: #d5d9e2;
  --text-main: #1f2430;
  --text-muted: #60656f;
  --text-invert: #ffffff;
  --accent: #0057a4;
  --accent-soft: #e0edfa;
  --accent-strong: #003b73;
  --shadow-soft: 0 4px 16px rgba(0, 0, 0, 0.06);
  --radius-card: 6px;
  --max-width: 1120px;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Helvetica Neue", Arial, sans-serif;
}

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

html,
body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  color: var(--text-main);
  background: var(--bg-body);
}

/* Top bar */

.top-bar {
  background: #f0f2f5;
  border-bottom: 1px solid #dde2ec;
  font-size: 0.875rem;
}

.top-bar-inner {
  margin: 0 auto;
  max-width: var(--max-width);
  padding: 0.35rem 1.25rem;
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
}

.top-bar-link {
  color: var(--text-muted);
  text-decoration: none;
}

.top-bar-link:hover {
  text-decoration: underline;
}

/* Header */

.site-header {
  background: var(--bg-header);
  color: var(--text-invert);
}

.site-header-inner {
  margin: 0 auto;
  max-width: var(--max-width);
  padding: 0.9rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: inherit;
  gap: 0.75rem;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--text-invert);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.03em;
}

.brand-subtitle {
  font-size: 0.8rem;
  opacity: 0.85;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.95rem;
}

.main-nav a {
  color: var(--text-invert);
  text-decoration: none;
  padding: 0.2rem 0.1rem;
  border-bottom: 2px solid transparent;
}

.main-nav a:hover {
  border-color: rgba(255, 255, 255, 0.7);
}

/* Hero */

.hero {
  background: linear-gradient(
    120deg,
    #e8edf7 0%,
    #f6f8fc 50%,
    #ffffff 100%
  );
  border-bottom: 1px solid #dde2ec;
}

.hero-inner {
  margin: 0 auto;
  max-width: var(--max-width);
  padding: 2.5rem 1.25rem 2.75rem;
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1.3fr);
  gap: 2.5rem;
  align-items: stretch;
}

.hero-text h1 {
  margin: 0 0 1rem;
  font-size: clamp(2.15rem, 3vw, 2.6rem);
  color: var(--accent-strong);
}

.hero-text p {
  margin: 0 0 1.5rem;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.55rem 1.4rem;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: var(--text-invert);
  border-color: var(--accent);
}

.btn-primary:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
}

.btn-secondary {
  background: transparent;
  color: var(--accent-strong);
  border-color: var(--accent-soft);
}

.btn-secondary:hover {
  background: var(--accent-soft);
}

.hero-side {
  display: flex;
  align-items: stretch;
}

.hero-panel {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
  padding: 1.25rem 1.4rem;
  border: 1px solid var(--border-card);
}

.hero-panel h2 {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
}

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

.hero-list li {
  font-size: 0.9rem;
  margin-bottom: 0.85rem;
}

.hero-tag {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  margin-bottom: 0.25rem;
}

/* Sections */

.section {
  background: var(--bg-section);
}

.section-alt {
  background: var(--bg-section-alt);
}

.section-inner {
  margin: 0 auto;
  max-width: var(--max-width);
  padding: 2.5rem 1.25rem 2.75rem;
}

.section-header {
  margin-bottom: 1.75rem;
}

.section-header h2 {
  margin: 0 0 0.2rem;
  font-size: 1.55rem;
  color: var(--accent-strong);
}

.section-header p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.98rem;
}

/* Layout helpers */

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 2rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

@media (max-width: 880px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }
  .hero-side {
    order: -1;
  }
  .two-column {
    grid-template-columns: 1fr;
  }
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .site-header-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .main-nav {
    margin-top: 0.5rem;
  }
}

/* Cards */

.card {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  padding: 1.3rem 1.3rem 1.25rem;
  border: 1px solid var(--border-card);
  box-shadow: var(--shadow-soft);
}

.card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
}

.card p {
  margin: 0 0 0.75rem;
  font-size: 0.93rem;
  color: var(--text-muted);
}

.card-list {
  margin: 0;
  padding-left: 1.1rem;
  font-size: 0.9rem;
  color: var(--text-main);
}

.card-compact {
  padding: 1.1rem 1.1rem 1.05rem;
}

.card-meta {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-strong);
  margin-bottom: 0.35rem;
}

.card-link {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
}

.card-link:hover {
  text-decoration: underline;
}

/* Events */

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

.event-list li {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr);
  gap: 0.75rem;
  padding: 0.6rem 0;
  border-top: 1px solid #dde2ec;
}

.event-list li:last-child {
  border-bottom: 1px solid #dde2ec;
}

.event-date {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-strong);
}

.event-body {
  font-size: 0.9rem;
  color: var(--text-main);
}

/* Footer */

.site-footer {
  background: #111827;
  color: #e5e7eb;
  margin-top: 0;
}

.site-footer-inner {
  margin: 0 auto;
  max-width: var(--max-width);
  padding: 2rem 1.25rem 1.5rem;
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: 2rem;
}

.brand-footer {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.6rem;
}

.brand-mark-footer {
  background: linear-gradient(135deg, #1f2937, #4b5563);
  box-shadow: none;
}

.brand-text-footer {
  display: flex;
  flex-direction: column;
}

.footer-text {
  margin: 0;
  font-size: 0.9rem;
  color: #d1d5db;
}

.footer-col h4 {
  margin: 0 0 0.6rem;
  font-size: 0.95rem;
  font-weight: 600;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.9rem;
}

.footer-links li {
  margin-bottom: 0.25rem;
}

.footer-links a {
  color: #d1d5db;
  text-decoration: none;
}

.footer-links a:hover {
  text-decoration: underline;
}

.footer-social {
  margin-top: 0.75rem;
  display: flex;
  gap: 0.75rem;
  font-size: 0.85rem;
}

.footer-social a {
  color: #d1d5db;
  text-decoration: none;
}

.footer-social a:hover {
  text-decoration: underline;
}

.site-footer-bottom {
  border-top: 1px solid #272f3e;
  margin-top: 0.25rem;
  padding: 0.75rem 1.25rem 1rem;
  font-size: 0.8rem;
  color: #9ca3af;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
}

.site-footer-bottom a {
  color: #d1d5db;
  text-decoration: none;
}

.site-footer-bottom a:hover {
  text-decoration: underline;
}

@media (max-width: 880px) {
  .site-footer-inner {
    grid-template-columns: 1fr;
  }
  .site-footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}