/* ==========================================================================
   header.css — top bar, primary navigation, mega menu, mobile drawer, search
   ========================================================================== */

.topbar {
  background: var(--color-accent-dark);
  color: rgba(245, 245, 240, 0.82);
  font-size: var(--fs-micro);
  line-height: 1.4;
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-m);
  min-height: 38px;
  padding-block: 8px;
}

.topbar p {
  margin: 0;
}

.topbar strong {
  color: var(--color-highlight);
  font-weight: 650;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: rgba(245, 245, 240, 0.88);
  backdrop-filter: saturate(150%) blur(14px);
  -webkit-backdrop-filter: saturate(150%) blur(14px);
  border-bottom: 1px solid var(--color-border);
}

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

/* Logo ------------------------------------------------------------------- */

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text);
  flex: 0 0 auto;
}

.logo__mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--color-accent);
  color: var(--color-highlight);
  display: grid;
  place-items: center;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: -0.04em;
  box-shadow: var(--shadow-xs);
}

.logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

.logo__name {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -0.03em;
}

.logo__tag {
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-secondary);
  font-weight: 600;
}

/* Primary nav ------------------------------------------------------------ */

.nav-primary {
  flex: 1 1 auto;
}

.nav-primary__list {
  display: flex;
  align-items: center;
  gap: var(--space-3xs);
  list-style: none;
}

.nav-primary__item {
  position: relative;
}

.nav-primary__link,
.nav-primary__toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 14px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 550;
  color: var(--color-text);
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out);
}

.nav-primary__link:hover,
.nav-primary__toggle:hover {
  background: var(--color-surface-alt);
  color: var(--color-accent-dark);
}

.nav-primary__item.is-current > .nav-primary__link,
.nav-primary__item.is-current > .nav-primary__toggle {
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
}

.nav-primary__toggle svg {
  width: 10px;
  transition: transform var(--duration-fast) var(--ease-out);
}

.nav-primary__toggle[aria-expanded="true"] svg {
  transform: rotate(180deg);
}

/* Mega menu -------------------------------------------------------------- */

.megamenu {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  width: max-content;
  max-width: min(1040px, calc(100vw - 80px));
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-l);
  padding: var(--space-l);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--duration-base) var(--ease-out),
    transform var(--duration-base) var(--ease-out),
    visibility var(--duration-base);
}

.megamenu[data-open="true"] {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.megamenu__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(190px, 1fr));
  gap: var(--space-l) var(--space-xl);
}

.megamenu__col-title {
  font-family: var(--font-heading);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: var(--ls-eyebrow);
  text-transform: uppercase;
  color: var(--color-secondary);
  margin-bottom: var(--space-xs);
  padding-bottom: var(--space-2xs);
  border-bottom: 1px solid var(--color-border);
}

.megamenu__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.megamenu__link {
  display: block;
  padding: 7px 10px;
  margin-inline: -10px;
  border-radius: var(--radius-s);
  font-size: 14.5px;
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  transition: background var(--duration-fast) var(--ease-out);
}

.megamenu__link span {
  display: block;
  font-size: 12.5px;
  color: var(--color-secondary);
  font-weight: 400;
  line-height: 1.4;
}

.megamenu__link:hover {
  background: var(--color-surface-alt);
  color: var(--color-accent-dark);
}

.megamenu__feature {
  grid-column: span 1;
  background: var(--color-surface-alt);
  border-radius: var(--radius-m);
  padding: var(--space-m);
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
}

.megamenu__feature h4 {
  font-size: 17px;
}

.megamenu__feature p {
  font-size: 13.5px;
  color: var(--color-secondary);
  line-height: 1.5;
}

/* Header actions --------------------------------------------------------- */

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2xs);
  flex: 0 0 auto;
}

.icon-button {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  transition: background var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out);
}

.icon-button:hover {
  background: var(--color-surface-alt);
  border-color: var(--color-accent);
}

.icon-button svg {
  width: 17px;
  height: 17px;
}

.nav-toggle {
  display: none;
}

/* Search panel ----------------------------------------------------------- */

.search-panel {
  position: fixed;
  inset: 0;
  z-index: var(--z-drawer);
  display: grid;
  place-items: start center;
  padding-top: 14vh;
  background: var(--color-overlay);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-base) var(--ease-out), visibility var(--duration-base);
}

.search-panel[data-open="true"] {
  opacity: 1;
  visibility: visible;
}

.search-panel__dialog {
  width: min(640px, calc(100vw - 40px));
  background: var(--color-surface);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-l);
  padding: var(--space-m);
  transform: translateY(-10px);
  transition: transform var(--duration-base) var(--ease-out);
}

.search-panel[data-open="true"] .search-panel__dialog {
  transform: translateY(0);
}

.search-panel__field {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  padding: 12px 16px;
}

.search-panel__field:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-accent-soft);
}

.search-panel__field input {
  flex: 1;
  border: 0;
  outline: none;
  background: transparent;
  font-size: 17px;
}

.search-panel__hint {
  margin-top: var(--space-xs);
  font-size: var(--fs-micro);
  color: var(--color-secondary);
}

.search-panel__results {
  margin-top: var(--space-s);
  max-height: 46vh;
  overflow-y: auto;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.search-panel__results a {
  display: block;
  padding: 10px 12px;
  border-radius: var(--radius-s);
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
  font-size: 15px;
}

.search-panel__results a span {
  display: block;
  font-size: 12.5px;
  color: var(--color-secondary);
  font-weight: 400;
}

.search-panel__results a:hover,
.search-panel__results a:focus-visible {
  background: var(--color-surface-alt);
}

.search-panel__empty {
  padding: var(--space-m);
  text-align: center;
  color: var(--color-secondary);
  font-size: var(--fs-small);
}

/* Mobile drawer ---------------------------------------------------------- */

.drawer {
  position: fixed;
  inset: 0 0 0 auto;
  width: min(420px, 100vw);
  background: var(--color-background);
  border-left: 1px solid var(--color-border);
  z-index: var(--z-drawer);
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-out);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.drawer[data-open="true"] {
  transform: translateX(0);
}

.drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-s) var(--space-m);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: var(--color-background);
}

.drawer__body {
  padding: var(--space-m);
}

.drawer__group + .drawer__group {
  margin-top: var(--space-2xs);
}

.drawer__group-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-s);
  padding: 14px 8px;
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
}

.drawer__group-toggle svg {
  width: 12px;
  transition: transform var(--duration-fast) var(--ease-out);
}

.drawer__group-toggle[aria-expanded="true"] svg {
  transform: rotate(180deg);
}

.drawer__panel {
  display: none;
  padding: var(--space-xs) 8px var(--space-s);
}

.drawer__panel[data-open="true"] {
  display: block;
}

.drawer__panel ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.drawer__panel a {
  display: block;
  padding: 8px 0;
  font-size: 15px;
  color: var(--color-text);
  text-decoration: none;
}

.drawer__panel a:hover {
  color: var(--color-accent);
}

.drawer__panel-heading {
  font-size: 11px;
  letter-spacing: var(--ls-eyebrow);
  text-transform: uppercase;
  color: var(--color-secondary);
  font-weight: 700;
  margin: var(--space-s) 0 var(--space-3xs);
}

.overlay {
  position: fixed;
  inset: 0;
  background: var(--color-overlay);
  z-index: var(--z-overlay);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-base) var(--ease-out), visibility var(--duration-base);
}

.overlay[data-open="true"] {
  opacity: 1;
  visibility: visible;
}

body.is-locked {
  overflow: hidden;
}