/* Lightbox der Bildwerkstatt. Farben und Maße nur aus marke/tokens/redim-brand.css. */

.lb {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr) auto;
  grid-template-areas: "buehne" "info";
  font-family: var(--rd-font-body);
  color: var(--rd-text);
  overscroll-behavior: contain;
  isolation: isolate;
  -webkit-tap-highlight-color: transparent;
}
.lb[hidden] { display: none; }
.lb:focus { outline: none; }

.lb__hintergrund {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: var(--rd-blau-nacht);
  background: color-mix(in srgb, var(--rd-blau-nacht) 88%, transparent);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

/* ───── Bühne mit Bild ───── */

.lb__buehne {
  grid-area: buehne;
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  padding:
    calc(44px + var(--rd-space-3) * 2 + env(safe-area-inset-top, 0px))
    calc(var(--rd-space-3) + env(safe-area-inset-right, 0px))
    var(--rd-space-3)
    calc(var(--rd-space-3) + env(safe-area-inset-left, 0px));
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}
.lb--ohne-info .lb__buehne { padding-bottom: calc(var(--rd-space-3) + env(safe-area-inset-bottom, 0px)); }

.lb__rahmen {
  position: relative;
  flex: none;
  overflow: hidden;
  border-radius: var(--rd-radius-lg);
  box-shadow: var(--rd-shadow-lg);
  background: var(--rd-bg-alt);
  transform-origin: 50% 50%;
  cursor: zoom-in;
  transition: box-shadow var(--rd-dur-standard) var(--rd-ease);
}
.lb__rahmen.ist-im-flug { box-shadow: none; will-change: transform, clip-path; }
.lb__rahmen--klon { position: absolute; margin: 0; pointer-events: none; z-index: 0; }
.lb--zieht .lb__rahmen { will-change: transform; }

.lb__platzhalter,
.lb__bild {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  -webkit-user-drag: none;
  user-select: none;
}
.lb__platzhalter { object-fit: cover; pointer-events: none; }
.lb__platzhalter[hidden] { display: none; }
.lb__bild {
  object-fit: contain;
  opacity: 0;
  transition: opacity var(--rd-dur-langsam) var(--rd-ease);
}
.lb__bild:not([src]) { visibility: hidden; }
.lb__bild.ist-sichtbar { opacity: 1; }
.lb__bild.ohne-uebergang { transition: none; }

/* Schimmer, solange das große Bild lädt */
.lb__rahmen.ist-ladend::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(105deg,
    transparent 25%,
    color-mix(in srgb, var(--rd-bg) 30%, transparent) 50%,
    transparent 75%);
  transform: translateX(-100%);
  animation: lb-schimmer 1.5s var(--rd-ease) infinite;
}
@keyframes lb-schimmer {
  from { transform: translateX(-100%); }
  to { transform: translateX(100%); }
}

.lb__fehler {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: var(--rd-space-4);
  text-align: center;
  font-size: var(--rd-fs-small);
  color: var(--rd-text-schwach);
  background: var(--rd-bg-alt);
}
.lb__fehler[hidden] { display: none; }
.lb__rahmen.hat-fehler { cursor: default; }

.lb--gezoomt .lb__buehne,
.lb--gezoomt .lb__rahmen { cursor: grab; }
.lb--gezoomt.lb--zieht .lb__buehne,
.lb--gezoomt.lb--zieht .lb__rahmen { cursor: grabbing; }

/* Beim Morph darf das Bild über Bühne und Info fliegen */
.lb--flug .lb__buehne { overflow: visible; z-index: 3; }

/* ───── Knöpfe ───── */

.lb__knopf,
.lb__nav {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--rd-linie);
  border-radius: var(--rd-radius-pill);
  background: var(--rd-bg);
  color: var(--rd-text-stark);
  box-shadow: var(--rd-shadow-md);
  cursor: pointer;
  transition:
    background-color var(--rd-dur-schnell) var(--rd-ease),
    border-color var(--rd-dur-schnell) var(--rd-ease),
    transform var(--rd-dur-schnell) var(--rd-ease),
    opacity var(--rd-dur-standard) var(--rd-ease);
}
.lb__knopf svg,
.lb__nav svg { width: 22px; height: 22px; pointer-events: none; }
.lb__knopf:hover,
.lb__nav:hover { background: var(--rd-bg-alt); border-color: var(--rd-linie-stark); }
.lb__knopf:active,
.lb__nav:active { transform: scale(.94); }
.lb__knopf:focus-visible,
.lb__nav:focus-visible,
.lb__aktion:focus-visible,
.lb__info:focus-visible {
  outline: 3px solid var(--rd-orange);
  outline-offset: 2px;
}
.lb__knopf[aria-expanded="true"] { border-color: var(--rd-orange); }
.lb__knopf[data-gezoomt="true"] { border-color: var(--rd-orange); }

.lb__nav {
  position: absolute;
  top: 50%;
  z-index: 2;
  margin-top: -22px;
}
.lb__nav--zurueck { left: calc(var(--rd-space-2) + env(safe-area-inset-left, 0px)); }
.lb__nav--weiter { right: calc(var(--rd-space-2) + env(safe-area-inset-right, 0px)); }
.lb__nav:disabled { opacity: 0; pointer-events: none; }
.lb__nav[hidden] { display: none; }

/* ───── Leiste oben ───── */

.lb__leiste {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--rd-space-2);
  padding:
    calc(var(--rd-space-3) + env(safe-area-inset-top, 0px))
    calc(var(--rd-space-3) + env(safe-area-inset-right, 0px))
    0
    calc(var(--rd-space-3) + env(safe-area-inset-left, 0px));
  pointer-events: none;
}
.lb__leiste > * { pointer-events: auto; }
.lb__zaehler {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  margin: 0;
  padding: 0 var(--rd-space-3);
  border: 1px solid var(--rd-linie);
  border-radius: var(--rd-radius-pill);
  background: var(--rd-bg);
  color: var(--rd-text-stark);
  box-shadow: var(--rd-shadow-sm);
  font-family: var(--rd-font-headline);
  font-size: var(--rd-fs-caption);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.lb__zaehler[hidden] { display: none; }
.lb__werkzeuge { display: flex; gap: var(--rd-space-2); margin-left: auto; }

/* ───── Info ───── */

.lb__info {
  grid-area: info;
  position: relative;
  z-index: 2;
  display: grid;
  align-content: start;
  gap: var(--rd-space-3);
  max-height: 40vh;
  max-height: 40dvh;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: var(--rd-space-4) calc(var(--rd-space-4) + env(safe-area-inset-right, 0px)) calc(var(--rd-space-4) + env(safe-area-inset-bottom, 0px)) calc(var(--rd-space-4) + env(safe-area-inset-left, 0px));
  background: var(--rd-bg);
  color: var(--rd-text);
  border-top: 1px solid var(--rd-linie);
  border-radius: var(--rd-radius-lg) var(--rd-radius-lg) 0 0;
  box-shadow: var(--rd-shadow-lg);
}
.lb--ohne-info .lb__info { display: none; }

.lb__titel {
  margin: 0;
  font-family: var(--rd-font-headline);
  font-weight: 700;
  font-size: var(--rd-fs-small);
  line-height: 1.35;
  color: var(--rd-text-stark);
  overflow-wrap: anywhere;
}
.lb__daten {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--rd-space-1) var(--rd-space-3);
  margin: 0;
  font-size: var(--rd-fs-caption);
  line-height: 1.5;
}
.lb__daten[hidden] { display: none; }
.lb__daten dt { color: var(--rd-text-schwach); }
.lb__daten dd {
  margin: 0;
  color: var(--rd-text-stark);
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

.lb__aktionen { display: flex; flex-wrap: wrap; gap: var(--rd-space-2); }
.lb__aktionen[hidden] { display: none; }
.lb__aktion {
  display: inline-flex;
  align-items: center;
  gap: var(--rd-space-2);
  min-height: 44px;
  padding: 0 var(--rd-space-4);
  border: 1px solid var(--rd-linie-stark);
  border-radius: var(--rd-radius-pill);
  background: var(--rd-bg);
  color: var(--rd-text-stark);
  font-family: var(--rd-font-body);
  font-size: var(--rd-fs-caption);
  font-weight: 500;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition:
    background-color var(--rd-dur-schnell) var(--rd-ease),
    border-color var(--rd-dur-schnell) var(--rd-ease);
}
.lb__aktion:hover { background: var(--rd-bg-alt); border-color: var(--rd-orange); }
.lb__aktion:disabled { opacity: .5; cursor: not-allowed; }
.lb__aktion-icon { display: inline-grid; place-items: center; flex: none; }
.lb__aktion-icon svg { width: 20px; height: 20px; }

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

/* ───── Größere Bildschirme ───── */

@media (min-width: 640px) {
  .lb__buehne {
    padding-left: calc(52px + var(--rd-space-4) * 2 + env(safe-area-inset-left, 0px));
    padding-right: calc(52px + var(--rd-space-4) * 2 + env(safe-area-inset-right, 0px));
    padding-bottom: var(--rd-space-5);
  }
  .lb__nav { width: 52px; height: 52px; margin-top: -26px; }
  .lb__nav svg { width: 24px; height: 24px; }
  .lb__nav--zurueck { left: calc(var(--rd-space-4) + env(safe-area-inset-left, 0px)); }
  .lb__nav--weiter { right: calc(var(--rd-space-4) + env(safe-area-inset-right, 0px)); }
  .lb__leiste { padding: var(--rd-space-4) var(--rd-space-4) 0; }
}

@media (min-width: 1024px) {
  .lb {
    grid-template-columns: minmax(0, 1fr) 360px;
    grid-template-rows: minmax(0, 1fr);
    grid-template-areas: "buehne info";
  }
  .lb--ohne-info {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas: "buehne";
  }
  .lb__info {
    max-height: none;
    height: 100%;
    gap: var(--rd-space-4);
    padding: var(--rd-space-6) var(--rd-space-5);
    border-radius: 0;
    border-top: 0;
    border-left: 1px solid var(--rd-linie);
    box-shadow: var(--rd-shadow-lg);
  }
  .lb__titel { font-size: var(--rd-fs-body); }
  .lb__aktionen { flex-direction: column; align-items: stretch; }
  .lb__aktion { font-size: var(--rd-fs-small); }
  .lb__buehne { padding-bottom: var(--rd-space-6); }
}

/* ───── View Transitions (nur während des Übergangs aktiv) ───── */

:root.lb-vt .lb__rahmen { box-shadow: none; }
:root.lb-vt::view-transition-group(*) {
  animation-duration: 380ms;
  animation-timing-function: cubic-bezier(.2, .8, .2, 1);
}
:root.lb-vt::view-transition-old(*),
:root.lb-vt::view-transition-new(*) {
  animation-duration: 380ms;
}
/* Vorschau (meist object-fit: cover) und Großbild füllen die Gruppe, so passt der Morph */
:root.lb-vt::view-transition-old(*.lb-morph),
:root.lb-vt::view-transition-new(*.lb-morph) {
  width: 100%;
  height: 100%;
  object-fit: cover;
  overflow: clip;
}

/* ───── Weniger Bewegung ───── */

@media (prefers-reduced-motion: reduce) {
  .lb__rahmen.ist-ladend::after {
    animation: none;
    transform: none;
    background: color-mix(in srgb, var(--rd-bg) 12%, transparent);
  }
  .lb__knopf,
  .lb__nav,
  .lb__aktion { transition: opacity var(--rd-dur-schnell) linear, background-color var(--rd-dur-schnell) linear; }
  .lb__knopf:active,
  .lb__nav:active { transform: none; }
  .lb__bild { transition: opacity var(--rd-dur-schnell) linear; }
  :root.lb-vt::view-transition-group(*),
  :root.lb-vt::view-transition-old(*),
  :root.lb-vt::view-transition-new(*) { animation-duration: 150ms; }
}