/**
 * @file site-header.css
 * Verid — Site Header
 *
 * Ziel-HTML (nach page.html.twig Patch):
 *
 * <header id="header" class="site-header">
 *   <div class="verid-header-row1">          ← Zeile 1: Logo + Suche
 *     <div class="verid-header-row1__inner">
 *       [page.header Region]                  ← Branding-Block
 *       <div class="mobile-buttons">
 *         <button class="mobile-nav-button">
 *     </div>
 *   </div>
 *   <div class="verid-header-row2">          ← Zeile 2: Navigation
 *     <div class="verid-header-row2__inner">
 *       <div id="header-nav">
 *         [page.primary_menu]
 *         [page.secondary_menu]
 *     </div>
 *   </div>
 * </header>
 */

/* ─── Olivero-Altlasten entfernen ────────────────────────── */
/* display:none statt display:contents — damit auch die Kinder
   nicht rendern (Olivero-JS injiziert .sticky-header-toggle
   ins DOM; display:contents ließ dessen Icon ungewollt erscheinen) */
.site-header__fixable,
.site-header__initial,
.sticky-header-toggle,
.site-header__inner {
  display: none !important;
}

/* ─── Header-Wrapper ────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 600;
  background: var(--verid-color-bg);
  border-bottom: 1px solid var(--verid-color-border);
  box-shadow: 0 1px 3px rgba(28, 25, 22, 0.06);
}

/* ─── ZEILE 1: Branding ─────────────────────────────────── */
.verid-header-row1 {
  height: 68px;
  background: var(--verid-color-bg);
}

.verid-header-row1__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  height: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Branding-Block (Logo + Sitename) */
.verid-header-row1__inner .block-system-branding-block {
  flex-shrink: 0;
  background: none !important;
  border: none !important;
  padding: 0 !important;
}

.site-branding__name {
  font-family: var(--verid-font-display);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  hyphens: none;
  white-space: nowrap;
}
.site-branding__name a {
  color: var(--verid-color-text);
  text-decoration: none;
}
.site-branding__name a:hover { color: var(--verid-color-accent); }

.site-branding__logo img {
  max-height: 40px;
  width: auto;
  border-radius: 0;
}

/* Suche-Block in der Header-Region (Zeile 1, neben "Welt der BWL") */
.verid-header-row1__inner .block-search {
  margin-left: auto;   /* schiebt Suche an den rechten Rand */
  flex-shrink: 0;
  flex-grow: 1;        /* nimmt verfügbaren Platz ein */
  max-width: 520px;    /* aber nicht über die halbe Leiste hinaus */
}

/* Alle Container-Ebenen innerhalb des Such-Blocks inline machen */
.verid-header-row1__inner .block-search .content,
.verid-header-row1__inner .block-search .container-inline,
.verid-header-row1__inner .block-search form {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
}

.verid-header-row1__inner .block-search .form-item {
  margin: 0;
  padding: 0;
  flex: 1;      /* wächst innerhalb des Flex-Formulars */
  min-width: 0;
}
.verid-header-row1__inner .block-search .form-actions {
  margin: 0;
  padding: 0;
  flex-shrink: 0;
}

.verid-header-row1__inner .block-search .form-item label {
  display: none;
}

.verid-header-row1__inner input[type="search"],
.verid-header-row1__inner input[type="text"] {
  width: 100%;  /* 100% des flex-1 .form-item → wächst mit */
  padding: 0.375rem 0.875rem;
  font-size: 0.875rem;
  font-family: var(--verid-font-body);
  background: #F0F8FF;
  border: 1px solid var(--verid-color-border);
  border-radius: 9999px;
  color: var(--verid-color-text);
  transition: border-color 150ms;
}
.verid-header-row1__inner input[type="search"]:focus,
.verid-header-row1__inner input[type="text"]:focus {
  outline: none;
  border-color: var(--verid-color-accent);
}

.verid-header-row1__inner input[type="submit"],
.verid-header-row1__inner button[type="submit"],
.verid-header-row1__inner .form-submit {
  padding: 0.375rem 1rem;
  background: var(--verid-color-accent);
  color: #fff;
  border: none;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background 150ms;
}
.verid-header-row1__inner input[type="submit"]:hover,
.verid-header-row1__inner button[type="submit"]:hover {
  background: var(--verid-color-accent-hover);
}

/* Mobile-Button rechts in Zeile 1 */
.verid-header-row1__inner .mobile-buttons {
  margin-left: auto;
  display: none; /* Desktop: ausgeblendet */
}

/* ─── Kapitel-Button (zweites Hamburger für Buchnavigation) ── */
/*
 * Zeigt sich neben dem Hamburger auf Tablet/Mobile.
 * Visuell getrennt durch die Branding-Zone dazwischen:
 *   [☰ Menü] ·· [Welt der BWL ··] ·· [≡ Kapitel]
 * Nur vorhanden wenn page.sidebar im Twig nicht leer ist.
 */
.mobile-book-nav-btn {
  display: none; /* sichtbar ab ≤960px via Responsive */
  order: 9;      /* nach Branding, vor search-wrap (order:10) */
  align-items: center;
  gap: 0.3rem;
  height: 40px;
  padding: 0 0.75rem;
  background: var(--verid-color-accent-light);
  border: 1px solid var(--verid-color-accent-pale);
  border-radius: var(--verid-radius);
  cursor: pointer;
  color: var(--verid-color-accent);
  font-size: 0.72rem;
  font-weight: 700;
  font-family: var(--verid-font-body);
  white-space: nowrap;
  flex-shrink: 0;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: background 150ms, border-color 150ms;
  appearance: none;
}

.mobile-book-nav-btn:hover {
  background: var(--verid-color-accent-pale);
}

.mobile-book-nav-btn[aria-expanded="true"] {
  background: var(--verid-color-accent);
  color: #fff;
  border-color: var(--verid-color-accent);
}

.mobile-book-nav-btn__icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ─── Hamburger-Button ───────────────────────────────────── */
.mobile-nav-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  background: none;
  border: 1px solid var(--verid-color-border);
  border-radius: var(--verid-radius);
  cursor: pointer;
  color: var(--verid-color-text);
}

.mobile-nav-button__label { display: none; }

.mobile-nav-button__icon {
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  position: relative;
  transition: background 200ms;
}

.mobile-nav-button__icon::before,
.mobile-nav-button__icon::after {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  position: absolute;
  left: 0;
  transition: transform 200ms, top 200ms, bottom 200ms;
}

.mobile-nav-button__icon::before { top: -6px; }
.mobile-nav-button__icon::after  { bottom: -6px; }

/* Offen: Mittellinie ausblenden, oben/unten zu X drehen */
[data-drupal-selector="mobile-nav-button"][aria-expanded="true"] .mobile-nav-button__icon {
  background: transparent;
}
[data-drupal-selector="mobile-nav-button"][aria-expanded="true"] .mobile-nav-button__icon::before {
  top: 0;
  transform: rotate(45deg);
}
[data-drupal-selector="mobile-nav-button"][aria-expanded="true"] .mobile-nav-button__icon::after {
  bottom: 0;
  transform: rotate(-45deg);
}

/* ─── ZEILE 2: Navigation ────────────────────────────────── */
.verid-header-row2 {
  background: #F0F8FF;
  border-top: 1px solid var(--verid-color-border-light);
  position: relative; /* Anker für Overflow-Indikatoren */
}

/* Überlauf-Indikatoren: Gradient rechts zeigt an, dass noch mehr Einträge folgen */
.verid-header-row2::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 4rem;
  background: linear-gradient(to right,
    transparent,
    var(--verid-color-surface) 85%
  );
  pointer-events: none;
  z-index: 2;
}

/* Pfeil-Symbol ganz rechts */
.verid-header-row2::before {
  content: '›';
  position: absolute;
  top: 50%;
  right: 0.5rem;
  transform: translateY(-50%);
  font-size: 1.25rem;
  color: var(--verid-color-text-muted);
  pointer-events: none;
  z-index: 3;
  line-height: 1;
}

.verid-header-row2__inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 2rem;
  overflow-x: auto;
  scrollbar-width: none;
}
.verid-header-row2__inner::-webkit-scrollbar { display: none; }

/* ─── #header-nav  ───────────────────────────────────────── */
/* Jetzt ein direktes Kind von .verid-header-row2__inner,
   NICHT mehr in derselben Flexzeile wie das Logo. */
#header-nav {
  display: flex;
  align-items: stretch;
}

/* Block-Titel (z.B. "Themen") ausblenden */
#header-nav .block__title,
#header-nav h2 {
  display: none !important;
}

/* Region-Wrapper im Nav */
#header-nav .region {
  display: flex;
  align-items: stretch;
  min-width: 0;
}

/* ─── Menü-Liste: einzeilig, kein Umbruch ───────────────── */
#header-nav .menu {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;   /* ← KEIN Zeilenumbruch */
  align-items: stretch;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 0;
}

#header-nav .menu-item {
  display: block;
  flex-shrink: 0;
  position: relative;
  list-style: none;
}

/* Top-Level-Links */
#header-nav .menu > .menu-item > a,
#header-nav .menu > .menu-item > button,
#header-nav .menu > .menu-item > span {
  display: block;
  padding: 0.625rem 0.875rem;
  font-family: var(--verid-font-body);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--verid-color-text-secondary);
  text-decoration: none;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  /* KEIN Umbruch */
  white-space: nowrap;
  hyphens: none;
  word-break: normal;
  transition: color 150ms, background 150ms, border-color 150ms;
}

#header-nav .menu > .menu-item > a:hover {
  color: var(--verid-color-text);
  background: var(--verid-color-surface-2);
}

#header-nav .menu > .menu-item--active-trail > a,
#header-nav .menu > .menu-item > a.is-active {
  color: var(--verid-color-accent);
  border-bottom-color: var(--verid-color-accent);
  font-weight: 600;
}

/* ─── Dropdown ───────────────────────────────────────────── */
#header-nav .menu > .menu-item > .menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 300;
  min-width: 200px;
  flex-direction: column;
  background: var(--verid-color-bg);
  border: 1px solid var(--verid-color-border);
  border-radius: 10px;
  box-shadow: 0 4px 16px rgba(28,25,22,.10);
  padding: 0.375rem;
  list-style: none;
  margin: 0;
}

#header-nav .menu > .menu-item[aria-expanded="true"] > .menu {
  display: flex;
}

#header-nav .menu > .menu-item > .menu .menu-item > a {
  display: block;
  padding: 0.5rem 0.875rem;
  font-size: 0.875rem;
  color: var(--verid-color-text);
  white-space: nowrap;
  hyphens: none;
  border-bottom: none;
  border-radius: 6px;
  text-decoration: none;
  transition: background 150ms;
}
#header-nav .menu > .menu-item > .menu .menu-item > a:hover {
  background: var(--verid-color-surface);
}

/* ─── Responsive ─────────────────────────────────────────── */

/*
 * Tablet (≤960px): Hamburger anzeigen, Navigation in Drawer.
 * Hamburger LINKS von "Welt der BWL" via order: -1.
 * Suche bleibt sichtbar, aber ohne flex-grow (Branding füllt die Mitte).
 */
@media (max-width: 960px) {
  :root { --verid-header-height: 68px; }

  /* Hamburger-Button anzeigen und ans linke Ende schieben */
  .verid-header-row1__inner .mobile-buttons {
    display: flex;
    order: -1;        /* vor Branding */
    margin-left: 0;   /* kein auto-margin mehr */
    flex-shrink: 0;
  }

  /* Kapitel-Button zeigen */
  .mobile-book-nav-btn {
    display: flex;
  }

  /* Branding füllt verfügbaren Mittelraum */
  .verid-header-row1__inner .block-system-branding-block {
    flex-grow: 1;
  }

  /* Suche: kompakt, kein auto-margin */
  .verid-header-row1__inner .block-search {
    margin-left: 0;
    flex-grow: 0;
    flex-shrink: 1;
    max-width: 240px;
  }

  /* Navigation in Drawer */
  .verid-header-row2,
  #header-nav { display: none; }

  .verid-header-row2.is-active,
  .verid-header-row2.is-open,
  #header-nav.is-active {
    display: block;
    position: fixed;
    top: 68px;
    inset-inline: 0;
    background: var(--verid-color-bg);
    border-bottom: 1px solid var(--verid-color-border);
    box-shadow: 0 4px 16px rgba(28,25,22,.10);
    z-index: 199;
    max-height: calc(100dvh - 68px);
    overflow-y: auto;
  }

  #header-nav .menu {
    flex-direction: column;
    padding: 1rem 1.25rem;
  }

  /* Menü-Links im Drawer: flex, damit Chevron ans rechte Ende kann */
  #header-nav .menu > .menu-item > a {
    width: 100%;
    padding: 0.875rem 0.75rem;
    font-size: 1rem;
    border-bottom: 1px solid var(--verid-color-border-light);
    border-radius: 6px;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  /* Chevron für einfache Links (ohne Submenu-Toggle-Button) */
  #header-nav .menu > .menu-item > a::after {
    content: '›';
    font-size: 1.25rem;
    color: var(--verid-color-text-muted);
    line-height: 1;
    flex-shrink: 0;
    margin-left: 0.5rem;
  }

  /* Items die EINEN Toggle-Button haben (expandierbar): kein extra Pfeil */
  #header-nav .menu > .menu-item:has(> button) > a::after {
    display: none;
  }
}

/*
 * Padding-Angleichung: Header-Innenabstand = Container-Innenabstand
 * Verhindert Versatz zwischen Nav/Logo und Seiteninhalt auf schmalen Screens.
 */
@media (max-width: 768px) {
  .verid-header-row1__inner,
  .verid-header-row2__inner {
    padding-inline: var(--verid-space-5); /* 1.25rem — wie .container bei ≤768px */
  }
}

@media (max-width: 480px) {
  .verid-header-row1__inner,
  .verid-header-row2__inner {
    padding-inline: var(--verid-space-4); /* 1rem — wie .container bei ≤480px */
  }
}

/*
 * Mobile (≤600px): Suche in zweite Zeile verschieben.
 * Zeile 1: [☰] [Welt der BWL] [Kapitel]
 * Zeile 2: [Suche _________________________ Suchen]
 */
@media (max-width: 600px) {
  :root { --verid-header-height: 112px; }

  .verid-header-row1 {
    height: auto; /* statt 68px — Zeile 2 für Suche */
  }

  .verid-header-row1__inner {
    flex-wrap: wrap;
    padding-block: 0.625rem; /* padding-inline kommt aus ≤768px-Regel oben */
    gap: 0;
    row-gap: 0.5rem;
    align-items: center;
  }

  /* Zeile 1: Hamburger + Branding */
  .verid-header-row1__inner .mobile-buttons {
    flex-shrink: 0;
    margin-right: 0.75rem;
  }

  .verid-header-row1__inner .block-system-branding-block {
    flex-grow: 1;
    flex-shrink: 1;
    min-width: 0;
  }

  .site-branding__name {
    font-size: 1.25rem; /* etwas kleiner auf Mobile */
    white-space: normal;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  /* Zeile 2: Suche auf volle Breite */
  .verid-header-row1__inner .block-search {
    order: 10;       /* nach allen anderen Elementen */
    flex-basis: 100%;
    max-width: none;
    flex-grow: 1;
    margin-left: 0;
    padding-bottom: 0.5rem;
  }
}