/* Layout */
.container {
  width: min(100% - 2rem, var(--container));
  margin-inline: auto;
}

.container--narrow {
  width: min(100% - 2rem, var(--container-narrow));
}

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  height: var(--header-h);
  background: rgba(247, 245, 242, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition), background var(--transition);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-sm);
  background: rgba(255, 255, 255, 0.96);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: var(--header-h);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-ink);
  flex-shrink: 0;
}

.brand img {
  height: 2.5rem;
  width: auto;
}

.brand-text {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.1;
}

.brand-text small {
  display: block;
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: 500;
  color: var(--color-ink-muted);
  letter-spacing: 0;
}

.nav-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
  border-radius: var(--radius);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 1.25rem;
  height: 2px;
  background: var(--color-ink);
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

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

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list > li {
  margin: 0;
  position: relative;
}

.nav-list a {
  display: block;
  padding: var(--space-2) var(--space-3);
  color: var(--color-ink);
  text-decoration: none;
  font-size: var(--fs-sm);
  font-weight: 500;
  border-radius: var(--radius);
}

.nav-list a:hover,
.nav-list a[aria-current="page"] {
  color: var(--color-brand);
  background: var(--color-bg-muted);
}

.nav-item--has-sub > button,
.nav-item--has-sub > a.nav-parent {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 0;
  background: transparent;
  font: inherit;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-ink);
  cursor: pointer;
  border-radius: var(--radius);
  text-decoration: none;
}

.nav-item--has-sub > button:hover,
.nav-item--has-sub > a.nav-parent:hover {
  color: var(--color-brand);
  background: var(--color-bg-muted);
}

.submenu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 16rem;
  max-height: min(70vh, 32rem);
  overflow-y: auto;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-2);
  list-style: none;
  margin: 0;
  z-index: 20;
}

.submenu ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.submenu a {
  font-size: var(--fs-xs);
  white-space: nowrap;
}

.nav-item--has-sub:hover > .submenu,
.nav-item--has-sub:focus-within > .submenu,
.nav-item--has-sub.is-open > .submenu {
  display: block;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: var(--space-3);
}

.lang-switch {
  display: inline-flex;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  font-size: var(--fs-xs);
  font-weight: 600;
}

.lang-switch a {
  padding: 0.4rem 0.65rem;
  text-decoration: none;
  color: var(--color-ink-muted);
  background: var(--color-bg-elevated);
}

.lang-switch a.is-active {
  background: var(--color-brand);
  color: #fff;
}

.site-main {
  min-height: 50vh;
}

.site-footer {
  margin-top: var(--space-9);
  background: var(--color-brand-dark);
  color: rgba(255, 255, 255, 0.88);
  padding: var(--space-8) 0 var(--space-6);
}

.site-footer a {
  color: rgba(255, 255, 255, 0.92);
}

.site-footer a:hover {
  color: var(--color-accent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-7);
}

.footer-brand {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  color: #fff;
  margin-bottom: var(--space-3);
}

.footer-heading {
  font-family: var(--font-display);
  font-size: var(--fs-sm);
  color: var(--color-accent);
  text-transform: none;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-3);
}

.footer-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-list li + li {
  margin-top: var(--space-2);
}

.footer-list a {
  text-decoration: none;
  font-size: var(--fs-sm);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: var(--space-5);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: space-between;
  font-size: var(--fs-xs);
  color: rgba(255, 255, 255, 0.65);
}

@media (max-width: 960px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    background: var(--color-bg-elevated);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4);
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-4);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition), opacity var(--transition);
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    box-shadow: var(--shadow-md);
    z-index: var(--z-overlay);
  }

  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
  }

  .submenu {
    position: static;
    display: none;
    box-shadow: none;
    border: 0;
    background: var(--color-bg-muted);
    max-height: none;
    margin-top: var(--space-2);
  }

  .nav-item--has-sub.is-open > .submenu {
    display: block;
  }

  .nav-actions {
    margin-left: 0;
    justify-content: space-between;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}