/* Header-specific styling building on base.css */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  margin: 0;
  padding: 0;
  padding-top: env(safe-area-inset-top, 0);
}

.site-header-inner {
  padding-block: var(--space-2);
}

.header-shell {
  box-shadow: 0 12px 40px rgba(15, 23, 42, 0.06);
  max-width: 100%;
  overflow-x: clip;
}

.header-inner {
  align-items: center;
  min-width: 0;
}

.header-brand {
  line-height: 1;
}

.header-brand span {
  line-height: 1;
  padding-block: 0.1rem;
}

/* Allow layout variability via data attribute (can be changed server-side if desired) */
.header-inner[data-header-variant="centered"] {
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.header-inner[data-header-variant="split"] {
  justify-content: space-between;
}

.header-brand-block {
  display: flex;
  align-items: center;
  min-width: 0;
  flex: 1 1 auto;
}

.header-brand {
  letter-spacing: 0.28em;
  font-size: 1.2rem;
  max-width: 100%;
  overflow-wrap: anywhere;
}

.header-nav-group {
  transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
  min-width: 0;
}

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

.header-nav-item a {
  font-size: var(--font-size-sm);
}

.header-cta-link,
.header-cta-main {
  font-size: var(--font-size-xs);
}

.header-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.38);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
  z-index: 39;
}

/* Mobile styles */
@media (max-width: 768px) {
  .site-header-inner {
    min-height: 72px;
    height: 72px;
    padding-block: 0;
    align-items: center;
  }

  .header-brand-block {
    position: relative;
    z-index: 1;
  }

  .header-nav-toggle {
    position: relative;
    z-index: 1;
    flex: 0 0 auto;
    flex-shrink: 0;
    align-self: center;
  }

  .header-nav-toggle .nav-toggle-line {
    transition: transform var(--transition-fast), opacity var(--transition-fast);
  }

  .header-nav-toggle.is-active .nav-toggle-line:nth-child(2) {
    transform: translateY(6.5px) rotate(45deg);
  }

  .header-nav-toggle.is-active .nav-toggle-line:nth-child(3) {
    opacity: 0;
  }

  .header-nav-toggle.is-active .nav-toggle-line:nth-child(4) {
    transform: translateY(-6.5px) rotate(-45deg);
  }

  .site-header.is-menu-open {
    z-index: 50;
    background: rgba(247, 244, 239, 0.98);
    border-bottom-color: rgba(26, 32, 44, 0.06);
    backdrop-filter: none;
  }

  .site-header.is-menu-open .site-brand {
    color: var(--color-text);
  }

  .header-nav-group {
    display: flex;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    width: 100%;
    max-width: 100%;
    max-height: calc(100dvh - 72px);
    box-sizing: border-box;
    background: linear-gradient(to bottom, rgba(247, 244, 239, 0.98), rgba(247, 244, 239, 0.98));
    border-top: 1px solid rgba(26, 32, 44, 0.06);
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.16);
    padding: var(--space-6) var(--space-5) var(--space-8);
    flex-direction: column;
    gap: var(--space-6);
    transform: translateY(-110%);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    z-index: 45;
    overflow-x: hidden;
    overflow-y: auto;
  }

  .header-nav-group.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .header-nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

  .header-nav-item a {
    font-size: var(--font-size-md);
  }

  .header-nav-utility {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-3);
  }

  .header-cta-link,
  .header-cta-main {
    width: 100%;
    justify-content: center;
  }

  .header-overlay.is-active {
    opacity: 1;
    visibility: visible;
  }
}

@media (min-width: 769px) {
  .header-nav-toggle {
    display: none;
  }

  .header-nav-group {
    display: flex !important;
    flex-wrap: wrap;
    justify-content: flex-end;
  }
}