/* ===== Containers ===== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.section {
  padding: var(--space-6) 0;
}
.section--tight {
  padding: var(--space-5) 0;
}
.section--alt {
  background: var(--secondary-bg);
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--card);
  border-bottom: 1px solid var(--border);
}

/* Sticky footer: body is a flex column (tokens.css), main grows to fill
   remaining space so .site-footer stays pinned to the bottom even when
   page content (e.g. collapsed accordions) is shorter than the viewport. */
main {
  flex: 1 0 auto;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: var(--header-height);
  flex-wrap: wrap;
  padding-top: var(--space-2);
  padding-bottom: var(--space-2);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 1.1rem;
  margin-right: auto;
}
.brand:hover {
  color: var(--primary-dark);
}
.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

/* Desktop nav (hidden on mobile) */
.nav-list {
  display: none;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-4);
}
.nav-link {
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
  padding: var(--space-2) 0;
  border-bottom: 2px solid transparent;
}
.nav-link:hover {
  color: var(--primary);
}
.nav-link.active {
  color: var(--primary-dark);
  border-bottom-color: var(--primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.hamburger-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.hamburger-btn .bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  position: relative;
}
.hamburger-btn .bar::before,
.hamburger-btn .bar::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background: var(--text);
}
.hamburger-btn .bar::before {
  top: -6px;
}
.hamburger-btn .bar::after {
  top: 6px;
}

.mobile-nav-panel {
  width: 100%;
  border-top: 1px solid var(--border);
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}
.mobile-nav-panel[hidden] {
  display: none;
}
.mobile-nav-panel ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.mobile-nav-panel .nav-link {
  display: block;
  padding: var(--space-2) var(--space-1);
}

@media (min-width: 900px) {
  .nav-list {
    display: flex;
  }
  .hamburger-btn {
    display: none;
  }
  .mobile-nav-panel {
    display: none !important;
  }
}

/* ===== Footer ===== */
.site-footer {
  background: var(--text);
  color: #e5e9f0;
  margin-top: var(--space-6);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  padding-top: var(--space-5);
  padding-bottom: var(--space-5);
}
.footer-grid h3 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: var(--space-2);
}
.footer-grid a {
  color: #cfe0f5;
}
.footer-grid ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-grid li {
  margin-bottom: var(--space-1);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
  font-size: 0.85rem;
  color: #b7c0cf;
}

@media (min-width: 600px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 900px) {
  .footer-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}