:root {
  /* Matthews Geographics Brand Palette */
  --brand-blue: #003366;
  /* Academic Blue */
  --brand-orange: #E87722;
  /* Vibrant Orange */
  --brand-cream: #F5F1E8;
  /* Parchment Cream */
  --text-charcoal: #2D3748;
  /* Charcoal Text */
  --text-light: #ffffff;

  /* Mapped Variables */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: var(--brand-cream);
  --color-text-primary: var(--text-charcoal);
  --color-text-secondary: #4a5568;
  --color-accent: var(--brand-orange);
  --color-blue: var(--brand-blue);

  /* Fonts */
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Crimson Text', serif;

  --spacing-container: 1200px;
  --spacing-section: 5rem;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  color: var(--color-text-primary);
  line-height: 1.6;
  font-size: 1.125rem;
  /* Slightly larger for serif readability */
  background-color: var(--color-bg-primary);
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s;
}

/* Typography */
h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--brand-blue);
  margin-bottom: 1rem;
}

h1 {
  font-size: 3rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2.25rem;
}

h3 {
  font-size: 1.75rem;
}

.text-accent {
  color: var(--color-accent);
}

.text-secondary {
  color: var(--color-text-secondary);
}

/* Layout Utilities */
.container {
  max-width: var(--spacing-container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: var(--spacing-section) 0;
}

.bg-secondary {
  background-color: var(--color-bg-secondary);
}

/* Unified Page Header */
.page-header {
  background-color: transparent;
  padding: 4rem 0 3rem;
  border-bottom: 1px solid #e2e8f0;
}

.page-header h1 {
  font-size: 3.2rem;
  margin-bottom: 1rem;
  line-height: 1.1;
  color: var(--brand-blue);
  letter-spacing: -0.02em;
}

.page-header .page-subtitle {
  font-size: 1.25rem;
  max-width: 850px;
  font-family: var(--font-body);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.grid {
  display: grid;
  gap: 2.5rem;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* Components */
.btn {
  display: inline-block;
  padding: 0.8rem 1.8rem;
  background-color: var(--brand-blue);
  color: white;
  font-family: var(--font-heading);
  /* Buttons use Montserrat */
  font-weight: 600;
  border-radius: 4px;
  /* Slight rounding, mostly square */
  border: 2px solid transparent;
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}

.btn:hover {
  background-color: #002244;
  /* Darker Blue */
  transform: translateY(-1px);
}

.btn-accent {
  background-color: var(--brand-orange);
  color: white;
}

.btn-accent:hover {
  background-color: #d16616;
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--brand-blue);
  color: var(--brand-blue);
}

.btn-outline:hover {
  background-color: var(--brand-blue);
  color: white;
}

.card {
  background: white;
  padding: 2.5rem;
  border: 1px solid #e2e8f0;
  border-top: 4px solid var(--brand-orange);
  /* Brand Accent */
  border-radius: 4px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

/* Header */
header {
  border-bottom: 1px solid #e2e8f0;
  padding: 1.5rem 0;
  position: sticky;
  top: 0;
  background: #ffffff !important; /* Solid white to hide content underneath */
  z-index: 2000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--brand-blue);
  letter-spacing: -0.02em;
  white-space: nowrap; /* Prevent logo wrapping to stabilize header height */
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
}

.logo span {
  color: var(--brand-orange);
  text-transform: uppercase;
  font-size: 1.1em;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--brand-blue);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.nav-links .dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}

.nav-chevron {
  width: 12px;
  height: 8px;
  display: inline-block;
  flex-shrink: 0;
  transition: transform 0.3s ease;
  vertical-align: middle;
}

.dropdown:hover .nav-chevron {
  transform: rotate(180deg);
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: #ffffff;
  min-width: 240px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  padding: 0.5rem 0;
  z-index: 1000;
  border-top: 3px solid var(--brand-orange);
  border-radius: 0 0 4px 4px;
}

.dropdown:hover .dropdown-content {
  display: block;
}

.dropdown-content a {
  color: var(--brand-blue);
  padding: 0.8rem 1.5rem;
  text-decoration: none;
  display: block;
  text-transform: none;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
}

.dropdown-content a:hover {
  background-color: var(--brand-cream);
  color: var(--brand-orange);
}

/* Interactive Tablet Styling */
.table-container {
  overflow-x: auto;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  background: white;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.interactive-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-heading);
  font-size: 0.9rem;
}

.interactive-table thead {
  background-color: var(--brand-blue);
  color: white;
}

.interactive-table th {
  padding: 1rem;
  text-align: left;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.75rem;
  white-space: nowrap;
}

.interactive-table td {
  padding: 1.2rem 1rem;
  border-bottom: 1px solid #e2e8f0;
  vertical-align: top;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.interactive-table tr:hover {
  background-color: rgba(0, 51, 102, 0.02);
}

.entity-name {
  font-weight: 700;
  color: var(--brand-blue);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.entity-name:hover {
  color: var(--brand-orange);
}

.status-badge {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.status-current { background: #d4edda; color: #155724; }
.status-check-soon { background: #fff3cd; color: #856404; }
.status-overdue { background: #f8d7da; color: #721c24; }
.status-unknown { background: #e2e8f0; color: #4a5568; }

.prompt-box {
  background: var(--brand-cream);
  padding: 3rem;
  border-radius: 12px;
  border-left: 8px solid var(--brand-blue);
  margin-top: 4rem;
  box-shadow: 0 10px 30px rgba(0, 51, 102, 0.08);
}

.prompt-content {
  background: white;
  padding: 2.5rem;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  margin-top: 1.5rem;
  font-family: var(--font-body);
  font-size: 1.1rem;
  color: #1e293b;
  max-height: 500px;
  overflow-y: auto;
  line-height: 1.7;
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
}

.prompt-content strong {
  color: var(--brand-blue);
  display: block;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  font-family: var(--font-heading);
  font-size: 1.2rem;
}

/* Tooltip Styling */
.policy-tooltip {
  position: fixed;
  display: none;
  background-color: rgba(0, 51, 102, 0.98);
  color: white;
  padding: 1.25rem 1.5rem;
  border-radius: 8px;
  font-size: 0.95rem;
  line-height: 1.6;
  max-width: 350px;
  z-index: 3000;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  pointer-events: none;
  font-family: var(--font-body);
}

.policy-tooltip::after {
  content: '';
  position: absolute;
  width: 10px;
  height: 10px;
  background: inherit;
  transform: rotate(45deg);
}

.policy-tooltip.top::after {
  bottom: -5px;
  left: 50%;
  margin-left: -5px;
}

.status-trigger {
  cursor: help;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.status-trigger:hover .status-pill {
  box-shadow: 0 0 0 2px var(--brand-orange);
}

/* Hub Section Styling */
.hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
  margin-top: 3rem;
}

.hub-card {
  display: flex;
  flex-direction: column;
  transition: transform 0.3s cubic-bezier(0.165, 0.84, 0.44, 1), box-shadow 0.3s ease;
  height: 100%;
}

.hub-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 51, 102, 0.1);
}

.hub-card-title {
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  color: var(--brand-blue);
}

.hub-card-text {
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
  flex-grow: 1;
  font-size: 1rem;
  line-height: 1.6;
}

.hub-card .btn {
  align-self: flex-start;
}

.mobile-toggle {
  display: none;
  font-size: 1.5rem;
  color: var(--brand-blue);
  cursor: pointer;
}

/* Footer */
footer {
  background-color: var(--brand-blue);
  color: rgba(255, 255, 255, 0.8);
  padding: 4rem 0 2rem;
  font-family: var(--font-heading);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-heading {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1.2rem;
  color: var(--brand-orange);
  font-weight: 700;
}

.footer-links a {
  display: block;
  margin-bottom: 0.6rem;
  color: rgba(255, 255, 255, 0.7);
  font-family: var(--font-body);
  font-size: 1rem;
}

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

.copyright {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
}

/* Page Specific: Hero */
.hero {
  padding: 6rem 0;
  max-width: 900px;
}

.hero p.hero-sub {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: 2.5rem;
  font-weight: 500;
  border-left: 4px solid var(--brand-orange);
  padding-left: 1.5rem;
}

/* Mobile */
@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }

  .mobile-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 1rem;
    border-bottom: 1px solid #e2e8f0;
    gap: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links .dropdown-content {
    display: block;
    position: static;
    box-shadow: none;
    padding-left: 1.5rem;
    border-top: none;
    background: transparent;
  }

  .nav-links .dropdown-content a {
    padding: 0.5rem 0;
    font-size: 0.8rem;
  }
}

/* Accessibility: Skip Link */
.skip-link {
  position: absolute;
  top: -9999px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--brand-blue);
  color: white;
  padding: 1rem 2rem;
  z-index: 1000;
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: 600;
  border-radius: 0 0 4px 4px;
}

.skip-link:focus {
  top: 0;
  outline: 4px solid var(--brand-orange);
}

/* Accessibility: Focus Indicators */
*:focus-visible {
  outline: 3px solid var(--brand-orange);
  outline-offset: 2px;
}

/* Accessibility: Button Reset for Toggle */
button.mobile-toggle {
  background: none;
  border: none;
  font-family: inherit;
  font-size: 1.5rem;
  padding: 0.5rem;
  /* Touch target */
}