/* ============================================================
   interactions.css — Nachtausgabe
   Ember-Hover, Scroll-Reveal, Burger-Menü
   ============================================================ */

/* ============================================================
   Ember-Hover — Unterlinie mit Glow
   Ersetzt den bisherigen Regenbogen-Charge-Effekt.
   Funktionsweise: ::after-Pseudo-Element skaliert von scaleX(0)
   zu scaleX(1) beim Hover, zieht sich beim Leave zurück.
   ============================================================ */

/* Navigation */
.main-navigation a,
.nav-primary a {
  position: relative;
}

.main-navigation a::after,
.nav-primary a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1px;
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.main-navigation a:hover::after,
.nav-primary a:hover::after,
.main-navigation a.active::after,
.nav-primary a.current-menu-item::after {
  transform: scaleX(1);
}

/* Archiv-Karten — Oberkante */
.st-archive-card {
  position: relative;
  overflow: hidden;
}

.st-archive-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 1px;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.st-archive-card:hover::before {
  transform: scaleX(1);
}

/* Ressourcen-Karten — Oberkante */
.st-ressource-card {
  position: relative;
  overflow: hidden;
}

.st-ressource-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 1px;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.st-ressource-card:hover::before {
  transform: scaleX(1);
}

/* Glossar-Einträge — Unterlinie */
.st-glossar-item {
  position: relative;
}

.st-glossar-item::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.st-glossar-item:hover::after {
  transform: scaleX(1);
}

/* Suchfeld — Unterlinie focus-within */
.subtexte-search-input-wrap {
  position: relative;
}

.subtexte-search-input-wrap::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.subtexte-search-input-wrap:focus-within::after {
  transform: scaleX(1);
}

/* Suchergebnisse — linker vertikaler Balken */
.st-search-item {
  position: relative;
}

.st-search-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.25s ease;
}

.st-search-item:hover::before {
  transform: scaleY(1);
}

/* Back-to-Top-Button — Unterkante */
#subtexte-top-btn {
  position: relative;
}

#subtexte-top-btn::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
  border-radius: 0 0 999px 999px;
}

#subtexte-top-btn:hover::after {
  transform: scaleX(1);
}

/* ============================================================
   Scroll-Reveal — IntersectionObserver
   JS (interactions.js) setzt .reveal--visible wenn im Viewport
   ============================================================ */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.5s ease, transform 0.5s ease;
  }

  .reveal--visible {
    opacity: 1;
    transform: translateY(0);
  }

  /* Gestaffelte Delays für Geschwister-Elemente */
  .reveal:nth-child(1) { transition-delay: 0s; }
  .reveal:nth-child(2) { transition-delay: 0.08s; }
  .reveal:nth-child(3) { transition-delay: 0.16s; }
  .reveal:nth-child(4) { transition-delay: 0.24s; }
  .reveal:nth-child(5) { transition-delay: 0.32s; }
  .reveal:nth-child(6) { transition-delay: 0.40s; }
}

/* Kein JS-Effekt bei prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ============================================================
   Burger-Menü — GeneratePress Mobile-Nav
   GeneratePress hängt .toggled an .main-navigation
   ============================================================ */
@media (max-width: 980px) {
  .main-navigation ul {
    display: none;
    flex-direction: column;
    gap: 0;
    background: rgba(15,10,8,0.97);
    backdrop-filter: blur(14px);
    border-top: 1px solid var(--rule);
    padding: 16px 0;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 100;
  }

  .main-navigation.toggled ul {
    display: flex;
  }

  .main-navigation ul li a {
    display: block;
    padding: 12px var(--gutter, 24px);
    border-bottom: 1px solid var(--rule);
  }

  .main-navigation ul li:last-child a {
    border-bottom: none;
  }
}