/**
 * @file
 * Site header: branding, primary navigation, language switcher, auth actions
 * and the responsive mobile drawer.
 */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition), background var(--transition);
}

/* Elevation once the page is scrolled (toggled from JS). */
.site-header.is-scrolled {
  box-shadow: var(--shadow-md);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: var(--header-nav-height);
  width: 100%;
  overflow: visible;
}

.header-start,
.header-actions {
  display: flex;
  align-items: center;
  flex: 1 1 0;
  min-width: 0;
}

.header-start {
  justify-content: flex-start;
  gap: var(--space-4);
}

.header-actions {
  justify-content: flex-end;
  gap: var(--space-3);
}

/* ==========================================================================
   Branding
   ========================================================================== */
.site-branding {
  display: flex;
  align-items: center;
  min-width: 0;
  max-width: 100%;
}

.site-branding__logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-width: 0;
  max-width: 100%;
}

.site-branding__logo img {
  height: 38px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  object-position: left center;
}

@media (max-width: 63.9375rem) {
  .header-start {
    flex: 1 1 auto;
    min-width: 0;
  }

  .header-actions {
    flex: 0 0 auto;
  }

  .site-branding__logo img {
    max-width: min(100%, 11.5rem);
  }
}

.site-branding__name {
  font-size: var(--text-xl);
  font-weight: var(--weight-extra);
  letter-spacing: -0.03em;
  color: var(--color-heading);
  white-space: nowrap;
}

.site-branding__name b {
  color: var(--color-primary);
}

/* A branding block accidentally placed inside the nav region must not
   duplicate the main logo. */
.header-nav .block-system-branding-block {
  display: none;
}

/* ==========================================================================
   Primary navigation (desktop)
   ========================================================================== */
.header-nav {
  display: none;
}

@media (min-width: 64rem) {
  .header-nav {
    display: flex;
    align-items: center;
  }
}

.header-nav .menu {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.header-nav .menu a {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.header-nav .menu a:hover,
.header-nav .menu a:focus-visible {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

.header-nav .menu a.is-active,
.header-nav .menu .menu-item--active-trail > a {
  color: var(--color-primary);
}

/* ==========================================================================
   Header actions (right cluster)
   ========================================================================== */
.header-auth {
  display: none;
}

@media (min-width: 64rem) {
  .header-auth {
    display: flex;
    align-items: center;
    gap: var(--space-2);
  }
}

/* ==========================================================================
   Header search (desktop bar / mobile full-screen)
   ========================================================================== */
.header-search-toggle,
.header-search-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  font-size: 1.125rem;
  line-height: 1;
  color: var(--color-heading);
  background: transparent;
  border: 0;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.header-search-toggle:hover,
.header-search-toggle:focus-visible,
.header-search-close:hover,
.header-search-close:focus-visible {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

.header-search {
  display: none;
}

.header-search.is-open {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  overflow: auto;
  padding: calc(env(safe-area-inset-top, 0px) + var(--space-3)) var(--container-pad) var(--space-8);
}

.header-search.is-open:has(.selectify-opened) {
  overflow: visible;
}

.site-header:has(.header-search.is-open) {
  z-index: var(--z-modal);
}

.header-search__panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
}

.header-search__mobile-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.header-search__mobile-title {
  font-size: var(--text-lg);
  font-weight: var(--weight-extra);
  color: var(--color-heading);
}

.header-search .region-header-search .block {
  margin: 0;
}

.header-search .region-header-search .block > h2 {
  display: none;
}

@media (min-width: 64rem) {
  .header-search-toggle,
  .header-search__mobile-bar {
    display: none;
  }

  .header-search,
  .header-search.is-open {
    position: static;
    inset: auto;
    z-index: auto;
    display: flex;
    flex: 1 1 18rem;
    width: auto;
    max-width: 48rem;
    min-width: 0;
    overflow: visible;
    padding: 0;
    background: transparent;
    border: 0;
  }

  .header-search__panel {
    display: block;
    width: 100%;
    max-width: none;
    margin: 0;
  }

  .header-search__form {
    width: 100%;
    padding: 0;
  }
}

/* ==========================================================================
   Drupal language switcher block
   ========================================================================== */
.header-right-region {
  display: none;
}

@media (min-width: 64rem) {
  .header-right-region {
    display: block;
  }
}

.header-right-region .block-language,
.header-right-region .language-switcher-language-url {
  position: relative;
  margin: 0;
}

.header-right-region .block-language > h2,
.header-right-region .language-switcher-language-url > h2 {
  display: none;
}

.lang-trigger {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.45rem 0.8rem;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.lang-trigger:hover {
  background: var(--color-primary-soft);
  border-color: var(--color-primary-border);
  color: var(--color-primary);
}

.lang-trigger .fa-chevron-down {
  font-size: 0.7rem;
  transition: transform var(--transition-fast);
}

.lang-trigger[aria-expanded="true"] .fa-chevron-down {
  transform: rotate(180deg);
}

.region-header-right {
  display: flex;  
  flex-direction: row;
  gap: 0.5rem;
}

.header-right-region .block-language ul.links,
.header-right-region .language-switcher-language-url ul.links {
  position: absolute;
  top: calc(100% + var(--space-2));
  right: 0;
  min-width: 150px;
  margin: 0;
  display: none;
  flex-direction: column;
  padding: var(--space-1);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-header);
  list-style: none;
}

.header-right-region .block-language ul.links.is-open,
.header-right-region .language-switcher-language-url ul.links.is-open {
  display: flex;
  animation: dropdown-in var(--transition) both;
}

@keyframes dropdown-in {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.header-right-region .block-language ul.links li,
.header-right-region .language-switcher-language-url ul.links li {
  margin: 0;
  padding: 0;
}

.header-right-region .block-language ul.links a,
.header-right-region .language-switcher-language-url ul.links a {
  display: block;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text);
}

.header-right-region .block-language ul.links a:hover,
.header-right-region .block-language ul.links a:focus-visible,
.header-right-region .block-language ul.links a.is-active,
.header-right-region .language-switcher-language-url ul.links a:hover,
.header-right-region .language-switcher-language-url ul.links a:focus-visible,
.header-right-region .language-switcher-language-url ul.links a.is-active {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.block-private-message-notification-block {
  position: relative;
  overflow: hidden;
  width: 32.75px;
  height: 30px;
}
.block-private-message-notification-block .private-message-notification-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 65.5px;
  max-width: none;
  height: 30px;
}
.block-private-message-notification-block .private-message-page-link {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  text-align: center;
  color: #000;
  line-height: 26px;
}
.block-private-message-notification-block
  .unread-threads
  .private-message-notification-image {
  right: 0;
  left: auto;
}
.block-private-message-notification-block
  .unread-threads
  .private-message-page-link {
  color: #f00;
}


/* ==========================================================================
   Account / login icon (mobile only)
   ========================================================================== */
.header-account-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--color-heading);
  border-radius: var(--radius-pill);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.header-account-icon:hover,
.header-account-icon:focus-visible {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

@media (min-width: 64rem) {
  .header-account-icon {
    display: none;
  }
}

/* ==========================================================================
   Mobile hamburger toggle
   ========================================================================== */
.mobile-menu-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  padding: 0;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.mobile-menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  border-radius: var(--radius-pill);
  background: var(--color-heading);
  transition: transform var(--transition), opacity var(--transition);
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}
.mobile-menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.mobile-menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

@media (min-width: 64rem) {
  .mobile-menu-toggle {
    display: none;
  }
}

/* ==========================================================================
   Mobile drawer + backdrop
   ========================================================================== */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: min(88vw, 340px);
  height: 100dvh;
  z-index: var(--z-drawer);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  padding: calc(var(--header-height) + var(--space-4)) var(--space-6) var(--space-8);
  background: var(--color-surface);
  box-shadow: var(--shadow-lg);
  transform: translateX(100%);
  visibility: hidden;
  transition: transform var(--transition-slow), visibility var(--transition-slow);
  overflow-y: auto;
}

.mobile-drawer.is-open {
  transform: translateX(0);
  visibility: visible;
}

@media (min-width: 64rem) {
  .mobile-drawer {
    display: none;
  }
}

.mobile-drawer .menu {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}

.mobile-drawer .menu a {
  display: block;
  padding: var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--color-heading);
}

.mobile-drawer .menu a:hover,
.mobile-drawer .menu a.is-active {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.mobile-language-slot {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.mobile-language-slot:empty {
  display: none;
}

.mobile-language-slot .block-language,
.mobile-language-slot .language-switcher-language-url {
  margin: 0;
}

.mobile-language-slot .block-language > h2,
.mobile-language-slot .language-switcher-language-url > h2 {
  margin: 0 0 var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.mobile-language-slot .lang-trigger {
  display: none;
}

.mobile-language-slot ul.links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.mobile-language-slot ul.links li {
  margin: 0;
  padding: 0;
}

.mobile-language-slot ul.links a {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.mobile-language-slot ul.links a:hover,
.mobile-language-slot ul.links a:focus-visible,
.mobile-language-slot ul.links a.is-active {
  background: var(--color-primary-soft);
  border-color: var(--color-primary-border);
  color: var(--color-primary);
}

.mobile-drawer .user-menu-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: auto;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.mobile-drawer .user-menu-buttons > * {
  width: 100%;
  text-align: center;
}

.drawer-backdrop {
  position: fixed;
  inset: 0;
  z-index: var(--z-backdrop);
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(3px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
}

.drawer-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}