/* Omni Resume — site header */

.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: var(--z-header);
  background-color: color-mix(in srgb, var(--color-surface) 92%, transparent);
  border-block-end: var(--border-width-1) solid var(--color-border);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  transition: box-shadow var(--duration-normal) var(--ease-standard),
              background-color var(--duration-normal) var(--ease-standard);
}

@supports not (backdrop-filter: blur(1px)) {
  .site-header {
    background-color: var(--color-surface);
  }
}

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

.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  height: var(--header-height-mobile);
  min-height: var(--header-height-mobile);
}

@media (min-width: 900px) {
  .site-header__inner {
    height: var(--header-height-desktop);
    min-height: var(--header-height-desktop);
  }
}

/* Brand */
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-strong);
  text-decoration: none;
  flex: none;
  padding-block: var(--space-2);
  padding-inline: var(--space-1);
  border-radius: var(--radius-md);
}

.brand:hover {
  color: var(--color-primary);
}

.brand__mark {
  display: block;
  color: var(--color-primary);
  flex: none;
}

.brand__wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: 0.25em;
  font-size: 1.0625rem;
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.015em;
}

.brand__name {
  color: inherit;
}

.brand__suffix {
  color: var(--color-text-muted);
  font-weight: var(--font-weight-medium);
}

.brand--compact .brand__wordmark {
  font-size: 1rem;
}

/* Primary navigation */
.primary-nav {
  display: none;
  flex: 1;
}

@media (min-width: 900px) {
  .primary-nav {
    display: block;
  }
}

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

.primary-nav__item {
  position: relative;
}

.primary-nav__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  text-decoration: none;
  border-radius: var(--radius-md);
  background: none;
  border: 0;
  cursor: pointer;
  transition: color var(--duration-fast) var(--ease-standard),
              background-color var(--duration-fast) var(--ease-standard);
}

.primary-nav__link:hover,
.primary-nav__link:focus-visible {
  color: var(--color-text-strong);
  background-color: var(--color-surface-alt);
}

.primary-nav__link[aria-expanded='true'] {
  color: var(--color-text-strong);
  background-color: var(--color-surface-alt);
}

.primary-nav__toggle .icon {
  transition: transform var(--duration-fast) var(--ease-standard);
}

.primary-nav__toggle[aria-expanded='true'] .icon {
  transform: rotate(180deg);
}

/* Dropdown menus */
.nav-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 300px;
  background-color: var(--color-surface);
  border: var(--border-width-1) solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  z-index: var(--z-dropdown);
  animation: omni-scale-in var(--duration-fast) var(--ease-decelerate) both;
  transform-origin: top left;
}

.nav-menu[hidden] {
  display: none;
}

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

.nav-menu li + li {
  margin-block-start: 2px;
}

.nav-menu a {
  display: block;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  color: var(--color-text);
  text-decoration: none;
  line-height: 1.35;
}

.nav-menu a:hover,
.nav-menu a:focus-visible {
  background-color: var(--color-surface-alt);
  color: var(--color-text-strong);
}

.nav-menu__label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.nav-menu__desc {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-text-subtle);
  margin-block-start: 2px;
}

/* Right-hand actions */
.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-inline-start: auto;
  flex: none;
}

/* Theme toggle */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  background: none;
  border: 0;
  cursor: pointer;
  transition: color var(--duration-fast) var(--ease-standard),
              background-color var(--duration-fast) var(--ease-standard);
}

.theme-toggle:hover {
  color: var(--color-text-strong);
  background-color: var(--color-surface-alt);
}

.theme-toggle__sun,
.theme-toggle__moon {
  display: none;
}

[data-theme='dark'] .theme-toggle__sun {
  display: block;
}

[data-theme='light'] .theme-toggle__moon,
[data-theme='system'] .theme-toggle__moon {
  display: block;
}

@media (prefers-color-scheme: dark) {
  [data-theme='system'] .theme-toggle__sun {
    display: block;
  }
  [data-theme='system'] .theme-toggle__moon {
    display: none;
  }
}

/* Mobile menu toggle */
.mobile-menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  color: var(--color-text-strong);
  background: none;
  border: 0;
  cursor: pointer;
}

.mobile-menu-toggle:hover {
  background-color: var(--color-surface-alt);
}

@media (min-width: 900px) {
  .mobile-menu-toggle {
    display: none;
  }
}

/* Small CTA in header on mobile */
@media (max-width: 899px) {
  .site-header .btn--primary {
    display: none;
  }
}