/* KI-Kompass: sections story-scroll + story-teaser. Loaded only on pages that contain one of them (page.has_story).
   Look = ring hero of the home page: light sage -> sand ground, glass, leaves, data light (js/story.js).
   Text sits on frosted glass cards (dark ink on ~75 % white) for reliable contrast over the moving scene.
   States: .is-js (JS running), .is-ready (WebGL live), .is-fallback (no WebGL / reduced motion: still images
   from assets/story/fb-<scene>.webp), .is-intro / .is-outro (active part), data-active-scene="<scene>". */
.c-story, .c-story-teaser {
  --story-bg-1: #E8EDE4; --story-bg-2: #DCE5D8; --story-bg-3: #E9E1CF;
  --story-ink: #0B140C; --story-muted: #46513f; --story-green: #3F6B42;
  --story-glass: rgba(251, 251, 247, .74); --story-glass-strong: rgba(252, 252, 249, .86);
  --story-glass-line: rgba(255, 255, 255, .9); --story-hair: rgba(11, 20, 12, .12);
  --story-shadow: 0 1px 0 rgba(255, 255, 255, .7) inset, 0 30px 60px -34px rgba(30, 45, 25, .45), 0 2px 6px -2px rgba(30, 45, 25, .08);
  --story-accent: #E3B85C;
  --story-h: 100vh;
  color: var(--story-ink);
  background:
    radial-gradient(60% 70% at 68% 50%, rgba(246, 245, 237, .65), rgba(246, 245, 237, 0) 70%),
    linear-gradient(160deg, var(--story-bg-1) 0%, var(--story-bg-2) 48%, var(--story-bg-3) 100%);
}
@supports (height: 100svh) { .c-story, .c-story-teaser { --story-h: 100svh; } }
.c-story h1, .c-story h2, .c-story h3, .c-story-teaser h2 { color: var(--story-ink); }
.c-story .c-eyebrow, .c-story-teaser .c-eyebrow { color: var(--story-muted); }
.c-story .c-prose, .c-story-teaser .c-prose { color: var(--story-muted); }
.c-story .c-prose strong, .c-story .c-prose a { color: var(--story-ink); }
.c-story .c-breadcrumb__list, .c-story .c-breadcrumb a { color: var(--story-muted); }
.c-story .c-breadcrumb [aria-current] { color: var(--story-ink); }
/* buttons from the dark era of this section: ghost -> glass outline, light -> solid ink */
.c-story .c-btn--ghost { background: rgba(255, 255, 255, .5); color: var(--story-ink); border-color: rgba(11, 20, 12, .22); }
.c-story .c-btn--ghost:hover { background: #fff; color: var(--story-ink); border-color: var(--story-ink); }
.c-story .c-btn--light, .c-story-teaser .c-btn--light { background: var(--story-ink); color: #fff; border-color: var(--story-ink); }
.c-story .c-btn--light:hover, .c-story-teaser .c-btn--light:hover { background: var(--story-green); border-color: var(--story-green); color: #fff; }
.c-story :focus-visible, .c-story-teaser :focus-visible { outline: 2px solid var(--story-green); outline-offset: 3px; }

/* ------------------------------------------------------------ story-scroll */
.c-story { position: relative; isolation: isolate; }
.c-story__sticky { position: sticky; top: 0; height: var(--story-h); z-index: 0; overflow: hidden; }
.c-story__stage { position: absolute; inset: 0; }
.c-story__canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; opacity: 0; transition: opacity 1.4s var(--ease); }
.is-ready > .c-story__sticky .c-story__canvas, .c-story-teaser.is-ready .c-story__canvas { opacity: 1; }

/* still images (no WebGL / reduced motion / before JS): one picture per chapter, cross-faded */
.c-story__fallback { position: absolute; inset: 0; pointer-events: none; }
.c-story:not(.is-js) .c-story__fallback, .c-story-teaser:not(.is-js) .c-story__fallback {
  background: url(../assets/story/fb-chaos.webp) center / cover no-repeat;
}
.c-story:not(.is-js) .c-story__fallback {
  inset: calc(var(--header-h) + 6vh) max(var(--gutter), calc(50% - 640px)) 8vh 52%;
  border-radius: 28px; box-shadow: var(--story-shadow);
}
.c-story.is-ready .c-story__fallback, .c-story-teaser.is-ready .c-story__fallback { display: none; }
.is-fallback .c-story__canvas { display: none; }
.c-story__still {
  position: absolute; object-fit: cover; opacity: 0; transition: opacity .9s var(--ease);
  border-radius: 28px; border: 1px solid var(--story-glass-line); box-shadow: var(--story-shadow); background: #f1efe9;
}
.c-story__still.is-on { opacity: 1; }
.c-story .c-story__still {
  top: calc(var(--header-h) + 6vh); bottom: 8vh; right: max(var(--gutter), calc(50% - 640px)); left: 53%;
  width: auto; height: auto;
}
.c-story-teaser .c-story__still { inset: 6%; width: 88%; height: 88%; border-radius: 50%; }

/* progress navigation: glass rail on the right */
.c-story__nav {
  position: absolute; right: max(16px, calc(var(--gutter) - 8px)); top: 50%; transform: translateY(-50%); z-index: 2;
  padding: 14px 10px; border-radius: 999px;
  background: rgba(251, 251, 247, .55); border: 1px solid var(--story-glass-line);
  box-shadow: 0 1px 0 rgba(255, 255, 255, .7) inset, 0 18px 40px -24px rgba(30, 45, 25, .45);
  opacity: 0; transition: opacity .5s var(--ease);
}
@supports (backdrop-filter: blur(4px)) { .c-story__nav { backdrop-filter: blur(16px) saturate(1.4); -webkit-backdrop-filter: blur(16px) saturate(1.4); } }
.c-story.is-inview .c-story__nav { opacity: 1; }
.c-story.is-intro .c-story__nav { opacity: .75; }
.c-story__nav-track { position: absolute; left: 50%; top: 22px; bottom: 22px; width: 1px; margin-left: -.5px; background: var(--story-hair); pointer-events: none; }
.c-story__nav-fill { position: absolute; inset: 0; background: var(--story-green); transform-origin: top; transform: scaleY(var(--story-progress, 0)); }
.c-story__nav-list { position: relative; list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.c-story__nav-link {
  position: relative; display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%;
  color: var(--story-muted); font-size: var(--fs-xs); letter-spacing: .04em; text-decoration: none;
  background: rgba(251, 251, 247, .9); border: 1px solid transparent;
  transition: color .3s var(--ease), background-color .3s var(--ease), border-color .3s var(--ease), transform .3s var(--ease);
}
.c-story__nav-num { font-variant-numeric: tabular-nums; }
.c-story__nav-label {
  position: absolute; right: calc(100% + 12px); top: 50%; padding: 7px 12px; border-radius: 999px; white-space: nowrap; pointer-events: none;
  font-size: 12px; letter-spacing: .02em; color: var(--story-ink);
  background: var(--story-glass-strong); border: 1px solid var(--story-glass-line); box-shadow: 0 12px 26px -16px rgba(30, 45, 25, .5);
  opacity: 0; transform: translate(6px, -50%); transition: opacity .3s var(--ease), transform .3s var(--ease);
}
.c-story__nav-link:hover, .c-story__nav-link:focus-visible { color: var(--story-ink); border-color: rgba(11, 20, 12, .25); }
.c-story__nav-link:hover .c-story__nav-label, .c-story__nav-link:focus-visible .c-story__nav-label,
.c-story__nav-link.is-active .c-story__nav-label { opacity: 1; transform: translate(0, -50%); }
.c-story__nav-link.is-active { color: #fff; background: var(--story-ink); transform: scale(1.08); }
.c-story__nav-link.is-active::after { content: ""; position: absolute; inset: -4px; border-radius: 50%; border: 1px solid rgba(227, 184, 92, .8); }

/* text flow over the sticky stage */
.c-story__flow { position: relative; z-index: 1; margin-top: calc(-1 * var(--story-h)); pointer-events: none; }
.c-story__intro, .c-story__chapter, .c-story__outro { display: flex; align-items: center; }
.c-story__intro { min-height: var(--story-h); padding-block: calc(var(--header-h) + 24px) 64px; }
.c-story__chapter { min-height: calc(var(--story-h) * 1.5); padding-block: 18vh 15vh; scroll-margin-top: 0; }
.c-story__outro { min-height: calc(var(--story-h) * 1.2); padding-block: 15vh 20vh; }
.c-story__col { position: relative; isolation: isolate; width: 100%; max-width: 560px; pointer-events: auto; }
.c-story__intro .c-story__col, .c-story__outro .c-story__col { max-width: 600px; }

/* glass cards for chapters + outro */
.c-story__chapter .c-story__col, .c-story__outro .c-story__col {
  padding: clamp(28px, 3vw, 44px); border-radius: 26px;
  background: var(--story-glass); border: 1px solid var(--story-glass-line); box-shadow: var(--story-shadow);
}
@supports (backdrop-filter: blur(4px)) {
  .c-story__chapter .c-story__col, .c-story__outro .c-story__col { backdrop-filter: blur(22px) saturate(1.5); -webkit-backdrop-filter: blur(22px) saturate(1.5); }
}
@supports not (backdrop-filter: blur(4px)) {
  .c-story__chapter .c-story__col, .c-story__outro .c-story__col { background: rgba(252, 252, 249, .94); }
}
.c-story__chapter .c-story__col::before, .c-story__outro .c-story__col::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; z-index: -1;
  background: linear-gradient(135deg, rgba(255, 255, 255, .55), rgba(255, 255, 255, 0) 38%);
}

.c-story .c-breadcrumb { margin-bottom: var(--space-5); }
.c-story__title { font-size: var(--fs-display); font-weight: var(--fw-light); line-height: var(--lh-tight); letter-spacing: -0.035em; margin: 0 0 var(--space-4); max-width: 12ch; }
.c-story__outro .c-story__title { font-size: clamp(34px, 3.6vw, 56px); max-width: 16ch; }
.c-story__lead { font-size: var(--fs-lg); line-height: 1.55; color: var(--story-muted); max-width: 34em; margin: 0; }
.c-story__lead p { margin: 0 0 1em; }
.c-story__hint { display: inline-flex; align-items: center; gap: 12px; margin: var(--space-6) 0 0; font-size: var(--fs-xs); letter-spacing: var(--ls-eyebrow); text-transform: uppercase; color: var(--story-muted); }
.c-story__hint span { position: relative; width: 1px; height: 40px; background: var(--story-hair); overflow: hidden; }
.c-story__hint span::after { content: ""; position: absolute; left: 0; top: -40%; width: 1px; height: 40%; background: var(--story-green); animation: story-hint 2.4s var(--ease) infinite; }
@keyframes story-hint { to { top: 110%; } }

/* large editorial chapter number, half above the card */
.c-story__num {
  position: absolute; left: clamp(20px, 2.4vw, 36px); top: 0; transform: translateY(-62%); margin: 0;
  font-size: clamp(88px, 10vw, 168px); font-weight: 200; line-height: .8; letter-spacing: -0.06em; font-variant-numeric: tabular-nums;
  background: linear-gradient(180deg, #2f5532 0%, rgba(63, 107, 66, .55) 55%, rgba(63, 107, 66, 0) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  pointer-events: none; user-select: none;
}
.c-story__chapter .c-story__col { margin-top: clamp(40px, 5vw, 80px); padding-top: clamp(44px, 4.4vw, 64px); }
.c-story__headline { font-size: var(--fs-h2); font-weight: var(--fw-light); line-height: var(--lh-heading); letter-spacing: var(--ls-heading); margin: 0 0 var(--space-3); }
.c-story__text { color: var(--story-muted); }
.c-story__text p { margin: 0 0 1em; }
.c-story__points { list-style: none; margin: var(--space-4) 0 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.c-story__point {
  position: relative; padding: 12px 14px 13px; border-radius: 14px; font-size: var(--fs-sm); line-height: 1.45; color: var(--story-muted);
  background: rgba(255, 255, 255, .55); border: 1px solid rgba(255, 255, 255, .95);
}
.c-story__point::before { content: ""; position: absolute; left: 14px; top: 0; width: 18px; height: 2px; border-radius: 0 0 2px 2px; background: var(--story-accent); }
.c-story__point-title { display: block; color: var(--story-ink); font-weight: var(--fw-medium); font-size: var(--fs-base); line-height: 1.3; margin-bottom: 3px; }
.c-story__point-text { display: block; }
.c-story .c-actions { margin-top: var(--space-4); }

/* reveal (JS adds .is-js on the root and .is-visible per chapter) */
.c-story.is-js .c-story__col { opacity: 0; transform: translateY(32px); transition: opacity .9s var(--ease), transform 1s var(--ease); }
.c-story.is-js .is-visible .c-story__col { opacity: 1; transform: none; }

/* tablet */
@media (max-width: 1024px) {
  .c-story__col { max-width: 480px; }
  .c-story__points { grid-template-columns: 1fr; }
  .c-story__nav-label { display: none; }
}

/* mobile: scene in the upper part of the sticky stage, glass cards scroll over it */
@media (max-width: 767px) {
  .c-story .c-story__still { top: calc(var(--header-h) + 64px); bottom: auto; left: var(--gutter); right: var(--gutter); height: 38vh; }
  .c-story:not(.is-js) .c-story__fallback { inset: calc(var(--header-h) + 64px) var(--gutter) auto var(--gutter); height: 38vh; }
  .c-story__nav { top: calc(var(--header-h) + 10px); right: 50%; transform: translateX(50%); padding: 6px 12px; }
  .c-story__nav-track { left: 22px; right: 22px; top: 50%; bottom: auto; width: auto; height: 1px; margin: -.5px 0 0; }
  .c-story__nav-fill { transform-origin: left; transform: scaleX(var(--story-progress, 0)); }
  .c-story__nav-list { grid-auto-flow: column; gap: 10px; }
  .c-story__nav-link { width: 30px; height: 30px; font-size: 11px; }
  .c-story__intro { align-items: flex-end; padding-block: 50vh 40px; }
  .c-story__intro .c-story__col {
    padding: 24px 20px; border-radius: 22px; background: var(--story-glass); border: 1px solid var(--story-glass-line); box-shadow: var(--story-shadow);
  }
  @supports (backdrop-filter: blur(4px)) { .c-story__intro .c-story__col { backdrop-filter: blur(18px) saturate(1.4); -webkit-backdrop-filter: blur(18px) saturate(1.4); } }
  .c-story__chapter { display: block; min-height: 0; padding-block: 62vh 12vh; }
  .c-story__outro { display: block; min-height: 0; padding-block: 62vh 20vh; }
  .c-story__chapter .c-story__col, .c-story__outro .c-story__col { max-width: none; padding: 40px 20px 24px; border-radius: 22px; }
  .c-story__chapter .c-story__col { margin-top: 48px; }
  .c-story__num { font-size: 92px; left: 16px; }
  .c-story__title { font-size: clamp(38px, 11vw, 52px); }
  .c-story__hint { margin-top: var(--space-4); }
}

/* ------------------------------------------------------------ story-teaser (home) */
.c-story-teaser { position: relative; overflow: hidden; padding-block: var(--section-pad); }
.c-story-teaser__inner { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--space-6); align-items: center; }
.c-story-teaser__content {
  max-width: 540px; position: relative; z-index: 1; padding: clamp(28px, 3vw, 44px); border-radius: 26px;
  background: var(--story-glass); border: 1px solid var(--story-glass-line); box-shadow: var(--story-shadow);
}
@supports (backdrop-filter: blur(4px)) { .c-story-teaser__content { backdrop-filter: blur(20px) saturate(1.4); -webkit-backdrop-filter: blur(20px) saturate(1.4); } }
.c-story-teaser__headline { font-size: var(--fs-h1); font-weight: var(--fw-light); line-height: var(--lh-heading); letter-spacing: var(--ls-heading); margin: 0 0 var(--space-3); }
.c-story-teaser__text { color: var(--story-muted); font-size: var(--fs-lg); }
.c-story-teaser__text p { margin: 0 0 1em; }
.c-story-teaser .c-actions { margin-top: var(--space-4); }
.c-story-teaser__stage {
  position: relative; width: 100%; max-width: 600px; aspect-ratio: 1 / 1; margin-left: auto;
  -webkit-mask-image: radial-gradient(closest-side, #000 72%, transparent 100%); mask-image: radial-gradient(closest-side, #000 72%, transparent 100%);
}
.c-story-teaser.is-fallback .c-story__fallback, .c-story-teaser:not(.is-js) .c-story__fallback { -webkit-mask-image: none; mask-image: none; }
.c-story-teaser:not(.is-js) .c-story__fallback { inset: 6%; border-radius: 50%; }
.c-story-teaser.is-fallback .c-story-teaser__stage, .c-story-teaser:not(.is-js) .c-story-teaser__stage { -webkit-mask-image: none; mask-image: none; }
@media (max-width: 767px) {
  .c-story-teaser__inner { grid-template-columns: 1fr; gap: var(--space-3); }
  .c-story-teaser__stage { max-width: 360px; margin: 0 auto; order: -1; }
  .c-story-teaser__content { padding: 24px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  .c-story.is-js .c-story__col { transform: none; transition: opacity .4s linear; }
  .c-story__hint span::after { animation: none; top: 30%; }
  .c-story__canvas, .c-story__nav, .c-story__nav-label, .c-story__still { transition-duration: .2s; }
  .c-story__nav-link { transition: none; }
}