/* Zweig «blender»: neuer Hero «Eine Form, drei Wege» und Scroll-Szene.
   Hero: ruhige Creme-Fläche, Text links, in Blender gerendertes Objekt rechts (Endlosschleife).
   Szene: ca. 250vh hoher Abschnitt; die Form zerfällt beim Scrollen in drei Teile (Bildfolge auf <canvas>). */

/* Seite beginnt unter dem festen Kopf; der Hero ist hell */
.bl-buehne {
  position: relative;
  background: var(--cream-100);
  color: var(--ink-900);
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 96px 0 40px;
  box-sizing: border-box;
  overflow: hidden;
}
.bl-buehne__inner {
  width: min(100%, 1320px);
  margin: 0 auto;
  padding: 0 24px;
  box-sizing: border-box;
  display: grid;
  grid-template-columns: minmax(0, 1.22fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(8px, 3vw, 48px);
}
.bl-kicker {
  margin: 0 0 clamp(14px, 2vh, 22px);
  max-width: 34em;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--terra-500);
}
.bl-headline {
  margin: 0;
  font-size: clamp(36px, 4.5vw, 70px);
  font-weight: 600;
  line-height: 1.04;
  letter-spacing: -0.025em;
  color: var(--ink-900);
  text-wrap: balance;
}
.bl-headline span { display: block; color: var(--terra-500); }
.bl-sub {
  margin: clamp(18px, 3vh, 30px) 0 0;
  max-width: 31em;
  font-size: clamp(17px, 1.35vw, 20px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--brown-600);
}
.bl-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 14px;
  margin-top: clamp(22px, 3.6vh, 38px);
}
.bl-cta .sv-button { white-space: normal; }
.bl-cta .sv-button--ghost {
  background: transparent;
  color: var(--ink-900);
  border-color: var(--border-strong);
  box-shadow: none;
}
.bl-cta .sv-button--ghost:hover,
.bl-cta .sv-button--ghost:focus-visible { background: var(--cream-card); border-color: var(--ink-900); }

/* Objekt: Poster (LCP) liegt unten, das Video blendet darüber ein, sobald es läuft.
   Weicher Rand, damit eine winzige Farbabweichung des Videos zur Seite nie als Kante auffällt. */
.bl-objekt {
  position: relative;
  width: 100%;
  max-width: min(640px, 78vh);
  justify-self: end;
  aspect-ratio: 1 / 1;
  pointer-events: none;
  -webkit-mask-image: radial-gradient(closest-side, #000 82%, transparent 100%);
          mask-image: radial-gradient(closest-side, #000 82%, transparent 100%);
}
.bl-objekt__bild,
.bl-objekt__video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}
.bl-objekt__video { opacity: 0; transition: opacity 0.6s ease; }
.bl-objekt.is-laeuft .bl-objekt__video { opacity: 1; }

/* ───── Scroll-Szene ───── */
.bl-szene {
  position: relative;
  background: var(--cream-100);
  color: var(--ink-900);
  padding: 8px 0 72px;
}
.bl-szene__titel {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.bl-szene__sticky {
  width: min(100%, 1240px);
  margin: 0 auto;
  padding: 0 24px;
  box-sizing: border-box;
}
.bl-szene__canvas,
.bl-szene__still {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  margin: 0 auto;
  -webkit-mask-image: radial-gradient(closest-side, #000 86%, transparent 100%);
          mask-image: radial-gradient(closest-side, #000 86%, transparent 100%);
}
.bl-szene__canvas { display: none; }
.bl-szene__texte {
  width: min(100%, 1100px, calc((100svh - 410px) * 2));
  margin-left: auto; margin-right: auto;
  padding: 0 7%; box-sizing: content-box;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
  margin-top: 8px;
}
.bl-text h3 {
  margin: 0 0 10px;
  font-size: clamp(24px, 2.2vw, 32px);
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.12;
}
.bl-text p { margin: 0 0 16px; font-size: 17px; font-weight: 600; line-height: 1.55; color: var(--brown-600); }
.bl-text__aktion { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; }
.bl-text .st-mehr { color: var(--terra-500); font-weight: 700; text-decoration: none; }
.bl-text .st-mehr:hover, .bl-text .st-mehr:focus-visible { color: var(--terra-600); text-decoration: underline; }
.bl-text .sv-start { width: 100%; max-width: 320px; }
.bl-text .sv-start__fehler { margin: 6px 0 0; font-size: 14px; }

/* Aktiv (Skript läuft, Bewegung erlaubt): Abschnitt wird hoch, Bühne klebt oben */
.bl-szene.bl-an { height: 250vh; padding: 0; }
.bl-an .bl-szene__sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  height: 100svh;
  padding-top: 82px;
  padding-bottom: 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}
.bl-an .bl-szene__canvas {
  display: block;
  width: min(100%, 1100px, calc((100svh - 410px) * 2));
}
.bl-an .bl-szene__still { display: none; }
.bl-an .bl-text { opacity: 0; transform: translateY(14px); transition: opacity 0.45s ease, transform 0.45s ease; }
.bl-an .bl-text.is-sichtbar { opacity: 1; transform: none; }
.bl-an .bl-text:not(.is-sichtbar) { pointer-events: none; }

@media (max-width: 900px) {
  .bl-buehne { min-height: 0; align-items: flex-start; padding: 92px 0 24px; }
  .bl-buehne__inner { grid-template-columns: 1fr; gap: 0; padding: 0 20px; }
  .bl-objekt { justify-self: center; max-width: min(430px, 92vw); margin-top: 8px; }
  .bl-headline { font-size: clamp(34px, 9.4vw, 52px); }
  .bl-kicker { font-size: 12px; }
}

/* Mobil: Ausschnitt der Bildfolge folgt dem aktiven Teil, es steht immer nur ein Text da */
@media (max-width: 760px) {
  .bl-szene__still { aspect-ratio: 2 / 1; }
  .bl-szene__texte { grid-template-columns: 1fr; gap: 28px; margin-top: 12px; }
  .bl-an .bl-szene__sticky { padding: 76px 20px 16px; justify-content: flex-start; }
  .bl-an .bl-szene__canvas { width: min(100%, 380px); aspect-ratio: 320 / 350; }
  .bl-szene__texte { width: 100%; padding: 0; }
  .bl-an .bl-szene__texte { position: relative; display: block; min-height: 250px; margin-top: 4px; }
  .bl-an .bl-text { position: absolute; inset: 0 0 auto 0; }
}

@media (prefers-reduced-motion: reduce) {
  .bl-objekt__video { display: none; }
}

/* .sv-page schnitt mit overflow-x:hidden die Sticky-Bühne ab (macht den Container zum Scroll-Bereich); clip tut dasselbe ohne diese Nebenwirkung */
.sv-page { overflow-x: clip; overflow-y: visible; }