/* Datakar Header + Search — consumes Foundation tokens; contains no global theme values. */
.global-header {
  position: sticky;
  top: 0;
  z-index: var(--dk-z-header);
  padding: 0.75rem var(--dk-page-gutter);
  background: var(--dk-color-surface);
  border-bottom: 1px solid var(--dk-color-border);
  transition:
    background-color var(--dk-duration-normal) var(--dk-ease-standard),
    border-color var(--dk-duration-normal) var(--dk-ease-standard),
    box-shadow var(--dk-duration-normal) var(--dk-ease-standard),
    backdrop-filter var(--dk-duration-normal) var(--dk-ease-standard);
}

.global-header.is-scrolled {
  background: rgb(255 255 255 / 0.76);
  border-bottom-color: rgb(0 0 0 / 0.06);
  box-shadow: var(--dk-shadow-sm);
  backdrop-filter: blur(16px) saturate(135%);
  -webkit-backdrop-filter: blur(16px) saturate(135%);
}

.global-nav {
  width: min(100%, var(--dk-shell-max));
  min-height: 48px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--dk-space-4);
}

.global-brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  color: inherit;
  text-decoration: none;
}

.global-brand img {
  display: block;
  width: auto;
  height: 2rem;
}

.global-header-tools {
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.65rem;
}

.global-desktop-links {
  display: flex;
  align-items: center;
  gap: var(--dk-space-4);
  white-space: nowrap;
}

.global-desktop-links a {
  color: var(--dk-color-muted);
  text-decoration: none;
  font-size: 0.94rem;
}

.global-desktop-links a:hover,
.global-desktop-links a:focus-visible {
  color: var(--dk-color-text);
}

.global-search {
  position: relative;
  width: clamp(190px, 27vw, 330px);
}

.global-search-icon {
  position: absolute;
  inset-inline-start: 0.8rem;
  top: 50%;
  width: 1rem;
  height: 1rem;
  color: var(--dk-color-muted);
  pointer-events: none;
  transform: translateY(-50%);
}

.global-search-input {
  width: 100%;
  min-height: 40px;
  padding-block: 0.58rem;
  padding-inline: 2.35rem 0.8rem;
  border: 1px solid var(--dk-color-border);
  border-radius: var(--dk-radius-pill);
  background: color-mix(in srgb, var(--dk-color-surface) 88%, transparent);
  color: var(--dk-color-text);
  outline: none;
  appearance: none;
}

.global-search-input::placeholder {
  color: var(--dk-color-muted);
}

.global-search-input:focus {
  border-color: var(--dk-color-primary);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--dk-color-primary) 18%, transparent);
}

.global-search-input::-webkit-search-cancel-button {
  opacity: 0.55;
  cursor: pointer;
}

.global-search-results {
  position: absolute;
  z-index: var(--dk-z-dropdown);
  inset-inline: 0;
  top: calc(100% + 0.45rem);
  max-height: min(360px, 60vh);
  overflow-y: auto;
  padding: 0.35rem;
  border: 1px solid var(--dk-color-border);
  border-radius: var(--dk-radius-md);
  background: var(--dk-color-surface);
  box-shadow: var(--dk-shadow-md);
}

.global-search-result {
  width: 100%;
  display: grid;
  gap: 0.1rem;
  padding: 0.7rem 0.8rem;
  border-radius: 9px;
  color: var(--dk-color-text);
  text-decoration: none;
}

.global-search-result strong {
  font-size: 0.92rem;
}

.global-search-result small {
  color: var(--dk-color-muted);
  font-size: 0.78rem;
}

.global-search-result:hover,
.global-search-result:focus-visible,
.global-search-result.is-active {
  background: var(--dk-color-surface-soft);
  outline: none;
}

.global-search-result[aria-disabled="true"] {
  color: var(--dk-color-muted);
  cursor: default;
}

.global-menu-button,
.global-menu-close {
  border: 0;
  background: transparent;
  color: var(--dk-color-text);
  cursor: pointer;
}

.global-menu-button {
  width: 40px;
  height: 40px;
  display: none;
  place-items: center;
  padding: 8px;
  border-radius: var(--dk-radius-md);
}

.global-menu-button span {
  width: 20px;
  height: 1.5px;
  display: block;
  margin: 2.4px 0;
  border-radius: 2px;
  background: currentColor;
}

.global-menu-button:hover,
.global-menu-close:hover {
  background: var(--dk-color-surface-soft);
}

.global-nav-backdrop {
  position: fixed;
  z-index: var(--dk-z-backdrop);
  inset: 0;
  background: var(--dk-color-overlay);
  opacity: 0;
  transition: opacity var(--dk-duration-normal) var(--dk-ease-standard);
}

.global-nav-backdrop.is-open {
  opacity: 1;
}

.global-nav-drawer {
  position: fixed;
  z-index: var(--dk-z-drawer);
  top: 0;
  right: 0;
  left: auto;
  width: min(86vw, 340px);
  height: 100dvh;
  display: flex;
  flex-direction: column;
  padding: var(--dk-space-4);
  border-inline-start: 1px solid var(--dk-color-border);
  background: var(--dk-color-surface);
  box-shadow: var(--dk-shadow-md);
  transform: translateX(105%);
  visibility: hidden;
  transition:
    transform var(--dk-duration-normal) var(--dk-ease-standard),
    visibility 0s linear var(--dk-duration-normal);
}

.global-nav-drawer.is-open {
  transform: translateX(0);
  visibility: visible;
  transition-delay: 0s;
}

.global-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--dk-space-4);
  padding-block-end: var(--dk-space-4);
  border-bottom: 1px solid var(--dk-color-border);
}

.global-menu-close {
  width: 40px;
  height: 40px;
  border-radius: var(--dk-radius-md);
  font-size: 1.5rem;
  line-height: 1;
}

.global-drawer-nav {
  display: grid;
  gap: var(--dk-space-2);
  padding-block: var(--dk-space-4);
}

.global-drawer-nav a {
  min-height: 44px;
  display: flex;
  align-items: center;
  padding-inline: 0.85rem;
  border-radius: var(--dk-radius-md);
  color: var(--dk-color-text);
  text-decoration: none;
  font-weight: 700;
}

.global-drawer-nav a:hover,
.global-drawer-nav a:focus-visible {
  background: var(--dk-color-surface-soft);
}

.global-drawer-footer {
  margin-block-start: auto;
  padding: 0.9rem 0.85rem 0.35rem;
  border-top: 1px solid var(--dk-color-border);
  color: var(--dk-color-muted);
  font-size: 0.84rem;
  line-height: 1.6;
}

body.global-menu-open {
  overflow: hidden;
}

@media (prefers-color-scheme: dark) {
  .global-header.is-scrolled {
    background: rgb(18 18 18 / 0.76);
    border-bottom-color: rgb(255 255 255 / 0.08);
  }
}

@media (max-width: 760px) {
  .global-header {
    padding-block: 0.58rem;
  }

  .global-header.is-scrolled {
    backdrop-filter: blur(14px) saturate(130%);
    -webkit-backdrop-filter: blur(14px) saturate(130%);
  }

  .global-desktop-links {
    display: none;
  }

  .global-menu-button {
    display: grid;
  }

  .global-search {
    width: min(54vw, 300px);
  }
}

@media (max-width: 480px) {
  .global-brand img {
    height: 1.75rem;
  }

  .global-search {
    width: min(50vw, 230px);
  }

  .global-search-input {
    min-height: 38px;
    font-size: 0.88rem;
  }
}