/* =============================================
   HEADER COMPONENT STYLES
   Scoped to .site-header and its children.
   ============================================= */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-black);
  border-bottom: var(--border-thickness-heavy) solid var(--color-black);
  box-shadow: 0 var(--shadow-offset) 0 0 var(--shadow-color);
  height: auto;
  min-height: 72px;
  display: flex;
  align-items: center;
}

.header-container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-16);
  flex-wrap: nowrap;
}

/* Logo */
.header-logo {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  text-decoration: none;
  flex-shrink: 0;
}

.header-logo-img {
  width: 48px;
  height: 48px;
  border: none;
  box-shadow: none;
  filter: none;
  transition: none;
}

.header-logo-text {
  font-family: var(--font-heading);
  font-size: var(--text-h3-size);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-off-white);
  letter-spacing: var(--text-h3-letter-spacing);
  white-space: nowrap;
}

/* Navigation */
.primary-navigation {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-16);
  list-style: none !important;
  margin: 0;
  padding: 0;
}

.nav-item {
  margin: 0;
  padding: 0;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-heading);
  font-size: var(--text-small-size);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: var(--text-small-letter-spacing);
  color: var(--color-off-white);
  text-decoration: none;
  padding: var(--space-8) var(--space-4);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  white-space: nowrap;
  line-height: 1;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-black);
  background-color: var(--color-acid-green);
  outline: none;
}

.nav-link:focus-visible {
  outline: var(--border-thickness) solid var(--color-intense-yellow);
  outline-offset: 2px;
}

/* Active page indicator (optional, can be set via PHP) */
.nav-link[aria-current="page"] {
  color: var(--color-acid-green);
  background-color: transparent;
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* Header actions */
.header-actions {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.header-cta {
  white-space: nowrap;
}

/* Mobile toggle button */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 48px;
  height: 48px;
  padding: var(--space-8);
  background: none;
  border: var(--border-thickness) solid var(--color-off-white);
  cursor: pointer;
  position: relative;
  z-index: 1100;
}

.nav-toggle-line {
  display: block;
  width: 24px;
  height: 3px;
  background-color: var(--color-off-white);
  margin: 3px 0;
  transition: transform var(--transition-medium), opacity var(--transition-medium);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

.nav-toggle:focus-visible {
  outline: var(--border-thickness) solid var(--color-intense-yellow);
  outline-offset: 2px;
}

/* Mobile navigation overlay */
@media (max-width: 1024px) {
  .nav-toggle {
    display: flex;
  }

  .primary-navigation {
    position: fixed;
    top: 0;
    right: 0;
    width: 320px;
    max-width: 100%;
    height: 100vh;
    height: 100dvh;
    background-color: var(--color-black);
    border-left: var(--border-thickness-heavy) solid var(--color-off-white);
    box-shadow: -4px 0 0 0 var(--shadow-color);
    z-index: 1050;
    transform: translateX(100%);
    transition: transform var(--transition-medium);
    display: flex;
    flex-direction: column;
    padding: var(--space-48) var(--space-24) var(--space-24);
    overflow-y: auto;
  }

  .primary-navigation.is-open {
    transform: translateX(0);
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-16);
    width: 100%;
    margin-top: var(--space-48);
  }

  .nav-link {
    font-size: var(--text-h3-size);
    padding: var(--space-12) var(--space-8);
    width: 100%;
    display: block;
  }

  .header-actions {
    display: none; /* CTA hidden on mobile, or could be placed inside nav */
  }

  /* Prevent body scroll when menu open */
  body.menu-open {
    overflow: hidden;
  }
}

/* Smaller mobile adjustments */
@media (max-width: 768px) {
  .header-logo-text {
    font-size: var(--text-small-size);
  }

  .header-logo-img {
    width: 36px;
    height: 36px;
  }

  .primary-navigation {
    width: 100%;
  }
}