:root {
  --din-green: #1b5e20;
  --din-viewport-bg: rgb(250, 250, 247);
  --din-sheet-bg: rgb(255, 255, 255);
  --din-tooltip-text: #fff;
  --din-tooltip-shadow: 0 0 0.45em rgba(27, 94, 32, 0.55), 0 0 0.1em rgba(27, 94, 32, 0.9),
    0 0.06em 0.14em rgba(27, 94, 32, 0.4);
}

body.sandbox-body {
  margin: 0;
  min-height: 100vh;
}

html:has(.din-a-viewport) {
  height: 100%;
}

body.sandbox-body:has(.din-a-viewport) {
  min-height: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  overflow: hidden;
}

body.sandbox-body:has(.din-a-viewport) .sandbox-content,
body.sandbox-body:has(.din-a-viewport) .sandbox-playground {
  padding: 0;
  margin: 0;
  min-height: 0;
}

.din-a-viewport {
  position: fixed;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 10050;
  box-sizing: border-box;
  width: 100%;
  height: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  min-height: 100svh;
  min-height: -webkit-fill-available;
  padding: env(safe-area-inset-top, 0) env(safe-area-inset-right, 0) env(safe-area-inset-bottom, 0) env(safe-area-inset-left, 0);
  background: var(--din-viewport-bg);
  font-family: "Geist", system-ui, sans-serif;
  overflow: hidden;
}

.din-a-viewport__fill {
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
  min-height: 100%;
  overflow: hidden;
  isolation: isolate;
}

.din-a-sheet {
  position: relative;
  box-sizing: border-box;
  border: none;
  border-radius: 0px;
  background: var(--din-sheet-bg);
  container-type: size;
  container-name: din-sheet;
  transition: background 0.18s ease, border-color 0.18s ease;
  cursor: pointer;
}

.din-a-sheet--outer {
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  container-type: size;
  container-name: din-a0;
  border: 1px solid var(--din-green);
}

.din-a-sheet__split--right > .din-a-sheet {
  border-left: 1px solid var(--din-green);
}

.din-a-sheet__split--bottom > .din-a-sheet {
  border-top: 1px solid var(--din-green);
}

.din-a-sheet__split {
  position: absolute;
  box-sizing: border-box;
  z-index: 1;
}

.din-a-sheet__split--right {
  left: 50%;
  right: 0;
  top: 0;
  bottom: 0;
  width: auto;
  height: auto;
}

.din-a-sheet__split--bottom {
  left: 0;
  right: 0;
  top: 50%;
  bottom: 0;
  width: auto;
  height: auto;
}

.din-a-sheet__split > .din-a-sheet {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  z-index: 1;
}

.din-a-sheet__label {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0.35em;
  padding-bottom: clamp(0.45em, 3.5cqmin, 1.1em);
  max-width: 94%;
  pointer-events: none;
  line-height: 1.25;
  color: var(--din-green);
  transition: color 0.18s ease;
}

.din-a-sheet--outer > .din-a-sheet__label {
  left: 0;
  right: 50%;
  width: 50%;
  max-width: 50%;
}

.din-a-sheet:has(> .din-a-sheet__split--bottom) > .din-a-sheet__label {
  top: 0;
  bottom: 50%;
  height: 50%;
  left: 0;
  right: 0;
  max-width: 100%;
}

.din-a-sheet:not(.din-a-sheet--outer):has(> .din-a-sheet__split--right) > .din-a-sheet__label {
  left: 0;
  right: 50%;
  width: 50%;
  max-width: 50%;
  top: 0;
  bottom: 0;
  height: auto;
}

.din-a-sheet__name {
  font-size: clamp(10px, 14cqmin, 28px);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.din-a-tooltip {
  position: fixed;
  z-index: 10060;
  left: 0;
  top: 0;
  max-width: min(22em, calc(100vw - 24px));
  padding: 0;
  box-sizing: border-box;
  pointer-events: none;
  font-family: inherit;
  font-size: 0.8125rem;
  font-weight: 700;
  line-height: 1.35;
  text-align: right;
  color: var(--din-tooltip-text);
  text-shadow: var(--din-tooltip-shadow);
  background: none;
  border: none;
  border-radius: 0;
  box-shadow: none;
}

.din-a-tooltip strong {
  display: block;
  width: 100%;
  font: inherit;
  font-weight: 700;
  margin: 0 0 0.35em;
  text-align: right;
}

.din-a-tooltip__dims {
  display: block;
  width: 100%;
  font: inherit;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.din-a-toast {
  position: fixed;
  left: 50%;
  bottom: max(1rem, env(safe-area-inset-bottom, 0));
  z-index: 10070;
  max-width: min(36em, calc(100vw - 1.5rem));
  padding: 0.5rem 0.9rem;
  box-sizing: border-box;
  font-family: inherit;
  font-size: 0.8125rem;
  font-weight: 700;
  line-height: 1.35;
  text-align: center;
  color: var(--din-green);
  background: var(--din-viewport-bg);
  border: none;
  border-radius: 0px;
  overflow: hidden;
  box-shadow: none;
  pointer-events: none;
  transform: translateX(-50%) translateY(150%);
  opacity: 0;
  transition: transform 0.28s ease, opacity 0.28s ease;
}

.din-a-toast.din-a-toast--visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* Linker A0-Bereich (nur dort trifft das Blatt A0): ganze Ansicht grün */
.din-a-viewport.din-a-viewport--a0-hover {
  background: var(--din-green);
}

.din-a-viewport--a0-hover .din-a-sheet {
  background: var(--din-green);
  border-color: var(--din-green);
}

.din-a-viewport--a0-hover .din-a-sheet__split--right > .din-a-sheet {
  border-left-color: var(--din-green);
}

.din-a-viewport--a0-hover .din-a-sheet__split--bottom > .din-a-sheet {
  border-top-color: var(--din-green);
}

/* Nur A0-Beschriftung weiß; A1–A10: gleiches Grün wie Fläche → wirken „weg“ */
.din-a-viewport--a0-hover .din-a-sheet:not(.din-a-sheet--outer) .din-a-sheet__label,
.din-a-viewport--a0-hover .din-a-sheet:not(.din-a-sheet--outer) .din-a-sheet__name {
  color: var(--din-green);
}

.din-a-viewport--a0-hover .din-a-sheet--outer.din-a-sheet--hover > .din-a-sheet__label {
  color: #fff;
}

/* Ab A1: nur die eine gehoverte „Hälfte“ (ein Blatt) grün; A2+ darunter bleiben weiß — kein Mitfärben der Kinder. */
.din-a-sheet.din-a-sheet--hover {
  background: var(--din-green);
  border-color: var(--din-green);
}

.din-a-sheet__split--right > .din-a-sheet.din-a-sheet--hover {
  border-left-color: var(--din-green);
}

.din-a-sheet__split--bottom > .din-a-sheet.din-a-sheet--hover {
  border-top-color: var(--din-green);
}

.din-a-sheet.din-a-sheet--hover > .din-a-sheet__label {
  color: #fff;
}

/*
 * Smartphone Hochformat: gleiche HTML-Faltreihenfolge (rechts / unten abwechselnd),
 * aber Geometrie getauscht → entspricht DIN am *langen* Rand zuerst teilen:
 * volle Fläche = A0, untere Hälfte = A1, rechte Hälfte davon = A2, …
 * Querformat oder breiter Viewport: unverändert (wie Desktop/Tablet).
 */
.din-a-viewport.din-a-viewport--swap-splits .din-a-sheet__split--right {
  left: 0;
  right: 0;
  top: 50%;
  bottom: 0;
  width: auto;
  height: auto;
}

.din-a-viewport.din-a-viewport--swap-splits .din-a-sheet__split--bottom {
  left: 50%;
  right: 0;
  top: 0;
  bottom: 0;
  width: auto;
  height: auto;
}

/* Bei Swap: HTML „right“ ist visuell unten → waagerechte Kante = border-top; „bottom“ = visuell rechts → border-left */
.din-a-viewport.din-a-viewport--swap-splits .din-a-sheet__split--right > .din-a-sheet {
  border-left: none;
  border-top: 1px solid var(--din-green);
}

.din-a-viewport.din-a-viewport--swap-splits .din-a-sheet__split--bottom > .din-a-sheet {
  border-top: none;
  border-left: 1px solid var(--din-green);
}

.din-a-viewport.din-a-viewport--swap-splits.din-a-viewport--a0-hover .din-a-sheet__split--right > .din-a-sheet {
  border-left: none;
  border-top-color: var(--din-green);
}

.din-a-viewport.din-a-viewport--swap-splits.din-a-viewport--a0-hover .din-a-sheet__split--bottom > .din-a-sheet {
  border-top: none;
  border-left-color: var(--din-green);
}

.din-a-viewport.din-a-viewport--swap-splits .din-a-sheet__split--right > .din-a-sheet.din-a-sheet--hover {
  border-left: none;
  border-top-color: var(--din-green);
}

.din-a-viewport.din-a-viewport--swap-splits .din-a-sheet__split--bottom > .din-a-sheet.din-a-sheet--hover {
  border-top: none;
  border-left-color: var(--din-green);
}

.din-a-viewport.din-a-viewport--swap-splits .din-a-sheet--outer > .din-a-sheet__label {
  left: 0;
  right: 0;
  top: 0;
  bottom: 50%;
  width: 100%;
  max-width: 100%;
  height: 50%;
}

.din-a-viewport.din-a-viewport--swap-splits
  .din-a-sheet:has(> .din-a-sheet__split--bottom)
  > .din-a-sheet__label {
  top: 0;
  bottom: 0;
  left: 0;
  right: 50%;
  width: 50%;
  max-width: 50%;
  height: auto;
}

.din-a-viewport.din-a-viewport--swap-splits
  .din-a-sheet:not(.din-a-sheet--outer):has(> .din-a-sheet__split--right)
  > .din-a-sheet__label {
  left: 0;
  right: 0;
  top: 0;
  bottom: 50%;
  width: 100%;
  max-width: 100%;
  height: 50%;
}

@supports not (container-type: size) {
  .din-a-sheet__name {
    font-size: clamp(0.5rem, 2.2vmin, 1.1rem);
  }
}

@supports not selector(:has(*)) {
  body.sandbox-body .sandbox-content,
  body.sandbox-body .sandbox-playground {
    padding: 0;
    margin: 0;
  }
}