html {
  scrollbar-gutter: stable;
}

:root {
  color-scheme: light;
  --brand: #173f5f;
  --accent: #3caea3;
  --text: #1f1f1f;
  --muted: #6b7280;
  --bg: #ffffff;
  --bg-alt: #f5f7fb;
  --border: #e2e8f0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  scrollbar-gutter: stable;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

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

.container {
  width: min(900px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
  z-index: 10;
}

.site-header.scrolled {
  border-color: var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0;
}

.brand {
  font-weight: 700;
  color: var(--brand);
  text-decoration: none;
}

.nav-list {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}

.nav-toggle,
.nav-toggle-label {
  display: none;
}

.nav-item a {
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
}

.nav-item.active a {
  color: var(--brand);
  border-bottom: 2px solid var(--brand);
}

.nav-item a:hover {
  color: var(--brand);
}

.site-main {
  display: block;
  flex: 1;
}

.hero {
  background: linear-gradient(110deg, #173f5f, #20629e);
  color: #fff;
  padding: 5rem 0 4rem;
}

.hero-container {
  display: flex;
  align-items: center;
  gap: 3rem;
}

.hero-logo-wrapper {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.hero-logo {
  height: 280px;
  width: auto;
  display: block;
}

.hero-content {
  flex: 1;
}

.hero .lead {
  max-width: 40rem;
  font-size: 1.125rem;
  opacity: 0.9;
}

.cta {
  display: inline-block;
  margin-top: 1.5rem;
  padding: 0.75rem 1.75rem;
  background: var(--accent);
  color: #0b2627;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
}

.highlights {
  background: var(--bg-alt);
  padding: 3.5rem 0;
}

.highlights .highlight {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 12px 24px rgba(23, 63, 95, 0.06);
}

.highlights .highlight ul {
  padding-left: 1.1rem;
}

.latest-news {
  padding: 3.5rem 0;
}

.news-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.news-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  transition: transform 0.2s ease;
  background: #fff;
}

.news-card:hover {
  transform: translateY(-4px);
}

.news-card .meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.focus {
  background: var(--bg-alt);
  padding: 3.5rem 0 4rem;
}

.focus-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.focus-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.75rem;
  box-shadow: 0 12px 24px rgba(23, 63, 95, 0.04);
}

.page {
  padding: 3.5rem 0 4rem;
}

.page h1 {
  margin-top: 0;
}

.page-content>p {
  max-width: 100%;
}

.page-content>p:has(> img) {
  max-width: 100%;
}

.site-footer {
  background: #0f1f31;
  color: #d1dae6;
  padding: 1.25rem 0;
  margin-top: 4rem;
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-logo {
  height: 2.5rem;
  width: auto;
  opacity: 0.9;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 720px) {
  .site-header .container {
    padding: 0.85rem 0;
  }

  /* Hamburger Toggle Styles */
  .nav-toggle {
    display: none;
  }

  .nav-toggle-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 20;
  }

  .nav-toggle-label span,
  .nav-toggle-label span::before,
  .nav-toggle-label span::after {
    display: block;
    background: var(--brand);
    height: 2px;
    width: 24px;
    border-radius: 2px;
    position: relative;
    transition: all 0.3s ease;
  }

  .nav-toggle-label span::before,
  .nav-toggle-label span::after {
    content: '';
    position: absolute;
  }

  .nav-toggle-label span::before {
    bottom: 8px;
  }

  .nav-toggle-label span::after {
    top: 8px;
  }

  /* Animation for hamburger to X */
  .nav-toggle:checked~.nav-toggle-label span {
    background: transparent;
  }

  .nav-toggle:checked~.nav-toggle-label span::before {
    transform: rotate(45deg);
    bottom: 0;
  }

  .nav-toggle:checked~.nav-toggle-label span::after {
    transform: rotate(-45deg);
    top: 0;
  }

  /* Dropdown Menu Styles */
  .nav-list {
    display: none;
    /* Prevents transition flash when resizing from desktop */
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    flex-direction: column;
    gap: 0;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    z-index: 15;
  }

  .nav-toggle:checked~.nav-list {
    display: flex;
    animation: navFadeIn 0.3s ease forwards;
  }

  @keyframes navFadeIn {
    from {
      opacity: 0;
      transform: translateY(-10px);
    }

    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .nav-item {
    width: 100%;
  }

  .nav-item a {
    display: block;
    padding: 0.75rem 5%;
    width: 100%;
  }

  .nav-item.active a {
    border-bottom: none;
    border-left: 4px solid var(--brand);
    background: var(--bg-alt);
  }

  .hero {
    padding: 4rem 0 3rem;
  }

  .hero-container {
    flex-direction: column;
    gap: 2rem;
  }

  .hero-logo {
    height: 180px;
  }

  .highlights .highlight {
    margin-bottom: 1rem;
  }
}

/* Post Layout Styles */
.post-card {
  max-width: 800px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 3rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.post-content img {
  max-width: 480px;
  width: 100%;
  height: auto;
  display: block;
  margin: 2rem auto;
  border-radius: 8px;
}

@media (max-width: 768px) {
  .post-card {
    padding: 1.5rem;
  }
}

/* Foldable Alumni Section */
.alumni-details {
  margin-top: 3rem;
}

.alumni-summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  list-style: none;
  /* Hide default arrow */
  padding: 0.5rem 0;
  border-bottom: 2px solid var(--border);
  margin-bottom: 2rem;
}

.alumni-summary::-webkit-details-marker {
  display: none;
  /* Hide default arrow in Safari */
}

.alumni-summary h2 {
  margin: 0;
  font-size: 1.5rem;
}

.alumni-arrow {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease;
}

.alumni-arrow::after {
  content: '▼';
  font-size: 0.8rem;
  color: var(--muted);
}

.alumni-details[open] .alumni-arrow {
  transform: rotate(180deg);
}