/**
 * layout.css
 * Header, Footer, and Main Layout structures.
 */

.site-header {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4rem;
}

.site-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.site-nav ul {
  display: flex;
  gap: 1.5rem;
}

.site-nav a {
  color: var(--color-text-muted);
  font-weight: 600;
  padding: 0.5rem;
  border-radius: var(--radius-md);
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--color-primary);
  background: rgba(59, 130, 246, 0.1);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text);
}

main.site-main {
  padding: 2rem 0;
}

.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 3rem 0;
  text-align: center;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  color: var(--color-text-muted);
}

.footer-disclaimer p {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  max-width: 600px;
}

/* Responsive */
@media (max-width: 768px) {
  .mobile-menu-btn {
    display: block;
  }
  
  .site-nav {
    display: none;
    position: absolute;
    top: 4rem;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem;
    box-shadow: var(--shadow-md);
  }
  
  .site-nav.open {
    display: block;
  }
  
  .site-nav ul {
    flex-direction: column;
    gap: 0.5rem;
  }
}

/* Site Info Accordion Styles */
.footer-site-info {
  margin: 1.5rem 0;
  width: 100%;
  max-width: 800px;
}

.site-info-toggle-btn {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-weight: 600;
  padding: 0.5rem 1.5rem;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.site-info-toggle-btn:hover {
  background: var(--color-border);
  border-color: var(--color-border);
}

.site-info-content {
  margin-top: 1rem;
  padding: 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.site-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
  width: 100%;
}

.site-info-grid a {
  background: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.75rem;
  font-size: 0.875rem;
  font-weight: 600;
  text-align: center;
  display: block;
  transition: var(--transition);
}

.site-info-grid a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(59, 130, 246, 0.05);
  box-shadow: var(--shadow-sm);
}