/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: box-shadow var(--transition-base);
}

/* Backdrop blur lives on a pseudo-element, not .site-header itself, because
   backdrop-filter/filter/transform on an element creates a new containing
   block for any position:fixed descendant (like the mobile .main-nav
   dropdown) — that would trap it inside the header's own small box instead
   of covering the viewport. Keeping the filter off .site-header avoids that. */
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(251, 248, 242, 0.92);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--color-stone-200);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-sm);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--color-forest-900);
  white-space: nowrap;
}

.brand-mark {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.nav-list a {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-ink-700);
  padding: var(--space-2) 0;
  position: relative;
}

.nav-list a::after {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--color-amber-500);
  transition: width var(--transition-base);
}

.nav-list a:hover::after,
.nav-list a[aria-current="page"]::after {
  width: 100%;
}

.nav-list a[aria-current="page"] {
  color: var(--color-forest-900);
}

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

.lang-select {
  appearance: none;
  background: var(--color-white) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%23241f19'><path d='M5.5 7.5l4.5 4.5 4.5-4.5' stroke='%23241f19' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/></svg>") no-repeat right 10px center;
  background-size: 14px;
  border: 1px solid var(--color-stone-300);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-6) var(--space-2) var(--space-4);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-ink-900);
}

[dir="rtl"] .lang-select {
  background-position: left 10px center;
  padding: var(--space-2) var(--space-4) var(--space-2) var(--space-6);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--color-forest-900);
}

.nav-toggle svg { width: 26px; height: 26px; }

/* ===== Footer ===== */
.site-footer {
  background: var(--color-forest-900);
  color: var(--color-cream-100);
  padding-block: var(--space-8) var(--space-6);
}

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

.footer-grid h4 {
  color: var(--color-white);
  font-size: var(--fs-base);
  margin-bottom: var(--space-4);
}

.footer-grid p, .footer-grid a {
  color: var(--color-stone-300);
  font-size: var(--fs-sm);
}

.footer-grid a:hover { color: var(--color-amber-400); }

.footer-links li { margin-bottom: var(--space-2); }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: var(--space-5);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-size: var(--fs-sm);
  color: var(--color-stone-300);
}

/* ===== Grids ===== */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: center;
}

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  .main-nav {
    position: fixed;
    inset: var(--header-height) 0 0 0;
    background: var(--color-cream-50);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-6) var(--space-5);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
    overflow-y: auto;
  }

  .main-nav.is-open {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-list a {
    display: block;
    padding: var(--space-4) 0;
    border-bottom: 1px solid var(--color-stone-200);
    font-size: var(--fs-md);
  }

  .nav-actions {
    margin-top: var(--space-5);
    justify-content: flex-start;
  }

  .nav-toggle { display: inline-flex; }

  .footer-grid { grid-template-columns: 1fr; gap: var(--space-6); }
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; gap: var(--space-6); }

  h1 { font-size: var(--fs-3xl); }
  h2 { font-size: var(--fs-2xl); }
}