/* ==========================================================================
   Erklärstück im Hero: vier Szenen (Eingang, Vorgehen, Ergebnis, Nutzung)
   Baut auf den Tokens aus redesign.css auf. Alle Selektoren beginnen mit
   .explainer. Ohne JavaScript ist nur Szene 4 sichtbar (statisch).
   ========================================================================== */

.explainer { margin: 0; text-align: left; }

.explainer__card {
  background: #fff; border: 1px solid var(--krs-line);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
  padding: 18px 20px;
  display: flex; flex-direction: column; gap: 12px;
}

/* ----- Kopfzeile: Badge + Szenentitel ----- */
.explainer__head {
  display: flex; align-items: center; gap: 12px;
  padding-bottom: 10px; border-bottom: 1px solid var(--krs-line);
}
.explainer__badge {
  flex: none;
  font-size: 12px; font-weight: 600; line-height: 1.6;
  text-transform: uppercase; letter-spacing: var(--ls-caps);
  color: var(--krs-fokus); background: var(--krs-sandstein);
  padding: 2px 10px; border-radius: var(--radius-sm);
}
.explainer__kickers { display: grid; min-width: 0; }
.explainer__kicker {
  font-size: 15px; font-weight: 600; line-height: 1.4; color: var(--krs-nachtblau);
}

/* ----- Gestapelte Ebenen: Szenen, Titel, Untertitel ----- */
.explainer__stage { display: grid; min-height: 320px; }
.explainer__captions { display: grid; }
.explainer__scene, .explainer__kicker, .explainer__cap { grid-area: 1 / 1; }
.explainer__scene:not(.is-active),
.explainer__kicker:not(.is-active),
.explainer__cap:not(.is-active) { opacity: 0; visibility: hidden; }

.explainer__scene {
  display: flex; flex-direction: column; justify-content: center;
  min-width: 0;
}

/* ----- Untertitel ----- */
.explainer__cap {
  margin: 0;
  font-size: 16px; font-weight: 500; line-height: 1.45; color: var(--krs-nachtblau);
  text-wrap: pretty;
}

/* ----- Steuerung ----- */
.explainer__controls { display: none; }
.explainer--js .explainer__controls { display: block; }

.explainer__toggle {
  flex: none; width: 32px; height: 32px; padding: 0; margin: -4px -2px -4px auto;
  display: none; align-items: center; justify-content: center;
  border: 1px solid var(--krs-line); border-radius: 50%;
  background: #fff; color: var(--krs-nachtblau); cursor: pointer;
  transition: border-color var(--transition);
}
.explainer__toggle:hover { border-color: var(--krs-nachtblau); }
.explainer--js .explainer__toggle { display: inline-flex; }
.explainer__toggle svg { width: 16px; height: 16px; }
.explainer__icon-play { display: none; }
.explainer.is-user-paused .explainer__icon-play { display: block; }
.explainer.is-user-paused .explainer__icon-pause { display: none; }
.explainer--js.explainer--reduced .explainer__toggle { display: none; }

.explainer__steps {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px;
}
.explainer__seg {
  width: 100%; margin: 0; padding: 4px 0 2px;
  display: flex; flex-direction: column; gap: 7px;
  background: none; border: 0; border-radius: var(--radius-sm); cursor: pointer;
  font-family: var(--font-sans); font-size: 14px; font-weight: 500; line-height: 1.2;
  color: var(--krs-muted); text-align: left;
}
.explainer__seg:hover { color: var(--krs-nachtblau); }
.explainer__seg[aria-current] { color: var(--krs-nachtblau); font-weight: 600; }
.explainer__seg-label { white-space: nowrap; }
.explainer__bar {
  display: block; height: 3px; border-radius: 2px; overflow: hidden;
  background: var(--krs-line);
}
.explainer__fill {
  display: block; height: 100%; background: var(--krs-bernstein);
  transform: scaleX(0); transform-origin: left center;
}
.explainer__seg.is-done .explainer__fill,
.explainer--still .explainer__seg.is-current .explainer__fill,
.explainer:not(.explainer--js) .explainer__seg[aria-current] .explainer__fill { transform: scaleX(1); }
.explainer--play .explainer__seg.is-current .explainer__fill {
  animation: explainer-fill var(--explainer-dur, 6s) linear both;
}
.explainer.is-paused .explainer__fill { animation-play-state: paused; }

.explainer__toggle:focus-visible,
.explainer__seg:focus-visible {
  outline: 2px solid var(--krs-bernstein); outline-offset: 3px; box-shadow: none;
}

.explainer__vh {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.explainer__caption {
  margin-top: 12px; font-size: var(--fs-caption); line-height: 1.5;
  color: var(--krs-muted); text-align: left;
}

/* ==========================================================================
   Szene 1: Das geht hinein
   ========================================================================== */
.explainer__inputs { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.explainer__tile {
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  padding: 18px 12px 16px; text-align: center;
  background: var(--krs-paper); border: 1px solid var(--krs-line);
  border-radius: var(--radius-md);
}
.explainer__art { display: block; width: 100%; max-width: 160px; height: auto; color: var(--krs-nachtblau); }
.explainer__art-accent, .explainer__wave { stroke: var(--krs-bernstein); }
.explainer__tile-label {
  font-size: 15px; font-weight: 600; line-height: 1.35; color: var(--krs-nachtblau);
  text-wrap: balance;
}
.explainer__merge { position: relative; height: 50px; color: var(--krs-muted-2); }
.explainer__merge-lines { display: block; width: 100%; height: 38px; }
.explainer__merge-dot {
  position: absolute; left: 50%; bottom: 2px;
  width: 12px; height: 12px; margin-left: -6px; border-radius: 50%;
  background: var(--krs-bernstein);
  box-shadow: 0 0 0 5px rgba(194, 123, 45, 0.18);
}

/* ==========================================================================
   Szene 2: Das machen wir
   ========================================================================== */
.explainer__talk {
  position: relative; list-style: none; margin: 0; padding: 0 0 0 16px;
  display: flex; flex-direction: column; gap: 10px;
}
.explainer__talk::before {
  content: ""; position: absolute; left: 0; top: 4px; bottom: 4px; width: 2px;
  border-radius: 2px;
  background: linear-gradient(var(--krs-sandstein), var(--krs-bernstein));
}
.explainer__turn { display: flex; align-items: center; gap: 10px; min-width: 0; }
.explainer__turn--2 { padding-left: 14px; }
.explainer__turn--3 { padding-left: 28px; }
.explainer__ask {
  min-width: 0;
  font-size: 15px; font-weight: 500; line-height: 1.35; color: var(--krs-nachtblau);
  background: var(--krs-sandstein);
  padding: 7px 12px; border-radius: 12px 12px 12px 3px;
}
.explainer__reply {
  flex: none; margin-left: auto; width: 58px;
  display: flex; flex-direction: column; gap: 5px;
  padding: 9px 10px; background: #fff;
  border: 1px solid var(--krs-line); border-radius: 12px 12px 3px 12px;
  opacity: 0.55;
}
.explainer__reply i, .explainer__block i {
  display: block; height: 3px; border-radius: 2px; background: var(--krs-muted-2);
}
.explainer__reply i:last-child { width: 62%; }

.explainer__sort { display: flex; flex-direction: column; align-items: center; gap: 4px; margin-top: 8px; }
.explainer__sort-arrow { width: 22px; height: 22px; color: var(--krs-muted-2); }
.explainer__blocks { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; width: 100%; }
.explainer__block {
  display: flex; flex-direction: column; gap: 6px;
  padding: 8px 10px 11px; background: #fff;
  border: 1px solid var(--krs-line); border-top: 3px solid var(--krs-bernstein);
  border-radius: 6px;
}
.explainer__block b {
  font-family: var(--font-mono); font-size: 14px; font-weight: 500; line-height: 1.2;
  color: var(--krs-fokus);
}
.explainer__block i { background: #CBD5E0; }
.explainer__block i:last-child { width: 68%; }

/* ==========================================================================
   Szene 3: Das kommt heraus
   ========================================================================== */
.explainer__window {
  border: 1px solid var(--krs-line); border-radius: var(--radius-md);
  overflow: hidden; background: #fff; box-shadow: var(--shadow-sm);
}
.explainer__window-bar {
  display: flex; align-items: center; gap: 12px;
  padding: 9px 14px; background: var(--krs-nachtblau);
}
.explainer__dots { display: inline-flex; gap: 5px; flex: none; }
.explainer__dots i { width: 7px; height: 7px; border-radius: 50%; background: rgba(255, 255, 255, 0.35); }
.explainer__window-title {
  font-family: var(--font-serif); font-size: 16px; font-weight: 600; line-height: 1.35; color: #fff;
}
.explainer__topics { list-style: none; margin: 0; padding: 4px 0; }
.explainer__topic {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 14px;
  font-size: 15px; font-weight: 500; line-height: 1.35; color: var(--krs-nachtblau);
}
.explainer__topic + .explainer__topic { border-top: 1px solid var(--krs-line); }
.explainer__topic svg { width: 18px; height: 18px; flex: none; color: var(--krs-bernstein); }
.explainer__tags { list-style: none; margin: 14px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.explainer__tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 14px; font-weight: 500; line-height: 1.35; color: var(--krs-nachtblau);
  background: #fff; border: 1px solid var(--krs-line); border-radius: 999px;
  padding: 5px 12px 5px 9px;
}
.explainer__tag svg { width: 16px; height: 16px; flex: none; color: var(--krs-signal); }

/* ==========================================================================
   Szene 4: So nutzen Sie es (Beispielantwort)
   ========================================================================== */
.explainer__q {
  margin: 0;
  font-family: var(--font-serif); font-style: italic; font-weight: 500;
  font-size: 16px; line-height: 1.42; color: var(--krs-nachtblau);
  background: var(--krs-sandstein);
  padding: 8px 14px; border-radius: 14px 14px 14px 4px;
}
.explainer__answer {
  list-style: none; counter-reset: explainer-answer; margin: 10px 0 0; padding: 0;
  display: flex; flex-direction: column; gap: 5px;
  font-size: 15px; line-height: 1.42; color: var(--krs-anthrazit);
}
.explainer__answer li { counter-increment: explainer-answer; position: relative; padding-left: 30px; }
.explainer__answer li::before {
  content: counter(explainer-answer);
  position: absolute; left: 0; top: 0;
  width: 21px; height: 21px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 14px; font-weight: 500; line-height: 1;
  color: var(--krs-fokus); border: 1px solid rgba(194, 123, 45, 0.5);
}
.explainer__sources {
  display: flex; flex-direction: column; gap: 6px;
  margin-top: 10px; padding-top: 8px; border-top: 1px solid var(--krs-line);
}
.explainer__label { font-size: 14px; font-weight: 600; line-height: 1.3; color: var(--krs-fokus); }
.explainer__chips { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.explainer .source-chip { font-size: 14px; line-height: 1.3; padding: 3px 12px 3px 9px; }

/* ==========================================================================
   Bewegung (nur im Abspielmodus, den das Skript setzt)
   ========================================================================== */
@keyframes explainer-rise {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}
@keyframes explainer-drop {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: none; }
}
@keyframes explainer-grow {
  from { opacity: 0; transform: scaleY(0.2); }
  to { opacity: 1; transform: none; }
}
@keyframes explainer-dim {
  from { opacity: 1; }
  to { opacity: 0.55; }
}
@keyframes explainer-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes explainer-fill {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

.explainer--play .explainer__scene.is-active,
.explainer--play .explainer__kicker.is-active,
.explainer--play .explainer__cap.is-active { animation: explainer-fade 420ms ease-out both; }
.explainer--play .explainer__scene.is-active .explainer__in {
  animation: explainer-rise 520ms cubic-bezier(0.22, 0.61, 0.36, 1) var(--d, 0s) both;
}
.explainer--play .explainer__scene.is-active .explainer__wave .explainer__in {
  transform-box: fill-box; transform-origin: center;
  animation-name: explainer-grow; animation-duration: 360ms;
}
.explainer--play .explainer__scene.is-active .explainer__art g.explainer__in { animation-name: explainer-drop; }
.explainer--play .explainer__scene.is-active .explainer__reply.explainer__in {
  animation:
    explainer-rise 520ms cubic-bezier(0.22, 0.61, 0.36, 1) var(--d, 0s) both,
    explainer-dim 600ms ease-out 4.2s forwards;
}

/* ----- Breiten ----- */
@media (max-width: 1100px) {
  .explainer__card { padding: 18px; }
  .explainer__q { font-size: 15px; }
  .explainer__answer { font-size: 14px; }
}
@media (max-width: 640px) {
  .explainer__card { padding: 14px 14px 10px; gap: 10px; }
  .explainer__cap { line-height: 1.4; }
  .explainer__seg { padding: 2px 0 0; }
  .explainer__head { padding-bottom: 8px; }
  .explainer__stage { min-height: 300px; }
  .explainer__inputs { gap: 8px; }
  .explainer__tile { padding: 14px 8px 12px; }
  .explainer__steps { gap: 6px; }
  .explainer__q { padding: 7px 12px; }
  .explainer__answer { line-height: 1.4; gap: 4px; }
  .explainer__sources { gap: 0; margin-top: 8px; padding-top: 8px; }
  .explainer__label {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
  }
  .explainer__chips { gap: 5px; }
  .explainer__caption { margin-top: 8px; }
}

/* ----- Reduzierte Bewegung: keine Übergänge ----- */
@media (prefers-reduced-motion: reduce) {
  .explainer *, .explainer *::before { transition: none !important; animation: none !important; }
}