/* Custom overrides and utilities for the psychology learning site */
:root {
  color-scheme: light dark;
  --brand-primary: #4338ca;
  --brand-secondary: #f59e0b;
  --brand-muted: #f3f4f6;
  --text-body: #1f2937;
  --text-muted: #4b5563;
}

body {
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-body);
  background: #ffffff;
}

.gradient-bg {
  background: radial-gradient(circle at top left, rgba(67, 56, 202, 0.12), transparent 55%),
              radial-gradient(circle at bottom right, rgba(245, 158, 11, 0.14), transparent 45%);
}

.glass-panel {
  backdrop-filter: blur(18px);
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 1rem;
  box-shadow: 0 25px 50px -12px rgba(30, 58, 138, 0.25);
}

.card-hover {
  transition: all 0.3s ease;
}

.card-hover:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px -18px rgba(15, 23, 42, 0.4);
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(79, 70, 229, 0.12);
  color: var(--brand-primary);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.text-balance {
  text-wrap: balance;
}

@media (prefers-color-scheme: dark) {
  body {
    background: #0f172a;
    color: #e2e8f0;
  }

  .glass-panel {
    background: rgba(15, 23, 42, 0.65);
    border-color: rgba(148, 163, 184, 0.2);
  }

  .card-hover:hover {
    box-shadow: 0 20px 40px -18px rgba(148, 163, 184, 0.45);
  }

  .chip {
    background: rgba(99, 102, 241, 0.18);
  }
}

.module-grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .module-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .module-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.module-card {
  border-radius: 1rem;
  border: 1px solid rgba(148, 163, 184, 0.25);
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.9);
  min-height: 16rem;
}

.module-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.module-card p {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.module-card .module-link {
  margin-top: 1.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 600;
  color: var(--brand-primary);
}

.module-card .module-link svg {
  width: 1rem;
  height: 1rem;
}

.nav-mobile-toggle {
  display: none;
}

@media (max-width: 768px) {
  .nav-mobile-toggle {
    display: inline-flex;
  }

  .nav-links {
    display: none;
  }

  .nav-links.active {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1.25rem;
  }
}

.loading-spinner {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  border: 4px solid rgba(67, 56, 202, 0.15);
  border-top-color: var(--brand-primary);
  animation: spin 0.9s linear infinite;
  margin: 0 auto;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag-list span {
  background: rgba(99, 102, 241, 0.14);
  color: var(--brand-primary);
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.data-card {
  border-radius: 1rem;
  border: 1px solid rgba(148, 163, 184, 0.25);
  padding: 1.25rem;
  background: rgba(255, 255, 255, 0.92);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.data-card h4 {
  font-weight: 700;
  font-size: 1.1rem;
}

.data-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.data-card a {
  color: var(--brand-primary);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-thickness: 2px;
}

.stat-highlight {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--brand-primary);
}

.status-badge {
  align-self: flex-start;
  background: rgba(16, 185, 129, 0.15);
  color: #047857;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  letter-spacing: 0.04em;
}