/**
 * Sdílená navigační hlavička - viz shared/header.js.
 *
 * TODO (rollout): až #archa-header div nahradí stávající <header> na
 * strankach (misto aditivniho pilotu), tag-selektor `header { ... }` v
 * styles/styles.css (radky 342-347, mj. margin-bottom: var(--spacing-lg))
 * se zacne vztahovat i na tento blok, pokud se prevede na <header> znacku.
 * Bude potreba bud vlastnosti tag-selektoru v .archa-header explicitne
 * prebit, nebo ten tag-selektor ve styles.css oscopovat na konkretni
 * tridu. Reseno az pri rolloutu, ne ted.
 */

.archa-header {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  background: var(--color-bg-white);
  padding: var(--spacing-md) var(--spacing-lg);
  box-shadow: var(--shadow-md);
}

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

.archa-logo {
  display: flex;
  align-items: center;
  font-size: var(--font-size-large);
  font-weight: 700;
  color: var(--color-text-primary);
  text-decoration: none;
}

.archa-logo-img {
  height: 32px;
  width: auto;
  display: block;
}

.archa-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.archa-nav-item {
  position: relative;
  padding: var(--spacing-sm) var(--spacing-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-base);
  border-radius: var(--radius-sm);
}

.archa-nav-item:hover {
  color: var(--color-text-primary);
}

.archa-nav-item.active {
  color: var(--color-primary);
  font-weight: 600;
}

.archa-header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  min-width: 0;
  flex: 1 1 auto;
  justify-content: flex-end;
}

.archa-user-block {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  min-width: 0;
  flex: 0 1 auto;
  overflow: hidden;
}

.archa-location-name {
  color: var(--color-text-secondary);
}

.archa-user-name {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text-primary);
  min-width: 0;
  flex: 0 1 auto;
  max-width: 30vw;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.archa-logout-btn {
  flex-shrink: 0;
  white-space: nowrap;
  background: var(--color-error);
  color: white;
  padding: 8px 16px;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
}

.archa-logout-btn:hover {
  background: var(--color-error-dark);
}

.archa-badge-dot {
  position: absolute;
  top: 4px;
  right: -2px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-error);
}

.archa-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 36px;
  height: 32px;
  background: transparent;
  border: none;
  cursor: pointer;
  /* Dotyková plocha 44 px při stejném vzhledu a rozložení: padding + záporný margin (D8). */
  box-sizing: content-box;
  padding: calc((var(--touch-target) - 32px) / 2) calc((var(--touch-target) - 36px) / 2);
  margin: calc((32px - var(--touch-target)) / 2) calc((36px - var(--touch-target)) / 2);
}

.archa-hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 1px;
}

.archa-nav-panel {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 100%;
  right: var(--spacing-lg);
  left: var(--spacing-lg);
  background: var(--color-bg-white);
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  z-index: 50;
}

.archa-nav-panel .archa-nav-item {
  padding: var(--spacing-sm) var(--spacing-md);
}

.archa-nav-panel-divider {
  width: 100%;
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--spacing-sm) 0;
}

.archa-nav-panel .archa-logout-btn {
  margin: 0 var(--spacing-md);
}

/* Prepinac jazyka CZ / EN (E1) - v hlavicce na vsech sirkach a na login.html. */
.archa-lang-switch {
  display: inline-flex;
  flex-shrink: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.archa-lang-btn {
  min-width: 32px;
  padding: var(--spacing-xs) 6px;
  border: none;
  background: var(--color-bg-white);
  color: var(--color-text-secondary);
  font-size: var(--font-size-small);
  font-weight: 600;
  cursor: pointer;
}

.archa-lang-btn + .archa-lang-btn {
  border-left: 1px solid var(--color-border);
}

.archa-lang-btn:hover {
  color: var(--color-text-primary);
}

.archa-lang-btn[aria-pressed="true"] {
  background: var(--color-primary);
  color: var(--color-bg-white);
  cursor: default;
}

.archa-lang-btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}

.archa-lang-btn[aria-pressed="true"]:focus-visible {
  outline-color: var(--color-bg-white);
  outline-offset: -4px;
}

.archa-logo,
.archa-hamburger {
  flex-shrink: 0;
}

/* Hlavička přepíná na hamburger pod 900 px, stránka až pod 768 px: menu, jméno, role
   a Odhlásit se vedle sebe do 899 px nevejdou (D8). Výjimka z jednoho breakpointu
   je povolená jen tady - UI_CONVENTIONS.md, sekce 0, pravidlo 3. */
@media (max-width: 899px) {
  .archa-nav {
    display: none;
  }

  .archa-hamburger {
    display: flex;
  }

  .archa-user-block .archa-logout-btn {
    display: none;
  }
}

@media (max-width: 480px) {
  .archa-location-name { display: none; }
}

#archa-user-role { 
    flex-shrink: 0;
    white-space: nowrap;
}

@media (max-width: 400px) {
  #archa-user-role { display: none; }
}

@media (min-width: 900px) {
  .archa-hamburger {
    display: none;
  }

  .archa-nav-panel {
    display: none;
  }
}