/* --------------------- Golden circle --------------------- */

/* Hoogte = één scherm + de scrollafstand van de 3 stappen (+ even uitrusten op het einde) */
.golden-circle {
  position: relative;
  height: calc(100vh + var(--gc-step, 70vh) * 3.5);
}

.golden-circle__sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.golden-circle__layout {
  --size: 70vh; /* maximale cirkelgrootte; de cirkel past zich aan zijn kolom aan */
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 5vw;
  align-items: center;
}

/* Cirkels: WHAT buiten, HOW midden, WHY binnen */
.golden-circle__circles {
  order: 2;
  position: relative;
  width: min(100%, var(--size));
  aspect-ratio: 1;
  justify-self: center;
  container-type: inline-size;
}

.golden-circle__circle {
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 50%;
  aspect-ratio: 1;
  transform: translate(-50%, -50%) scale(0.9);
  opacity: 0;
  transition: opacity 0.6s ease, transform 0.6s ease, filter 0.6s ease;
  display: flex;
  justify-content: center;
  font-family: var(--font-body, 'BricolageGrotesque'), sans-serif;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 4.5cqw;
  line-height: 1;
}

.golden-circle__label {
  transition: opacity 0.6s ease;
}

.golden-circle__circle--what { width: 100%; }
.golden-circle__circle--how  { width: 66.66%; }
.golden-circle__circle--why  { width: 33.33%; align-items: center; }

.golden-circle__circle--what .golden-circle__label { margin-top: 8%; }
.golden-circle__circle--how  .golden-circle__label { margin-top: 12.5%; }

/* Een cirkel verschijnt bij zijn stap en blijft daarna staan (gedimd zodra een volgende stap actief is) */
.golden-circle[data-stage] .golden-circle__circle--what,
.golden-circle:is([data-stage="1"], [data-stage="2"], [data-stage="3"]) .golden-circle__circle--how,
.golden-circle:is([data-stage="2"], [data-stage="3"]) .golden-circle__circle--why {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

/* Gedimd: niet de actieve stap */
.golden-circle:is([data-stage="1"], [data-stage="2"]) .golden-circle__circle--what,
.golden-circle[data-stage="2"] .golden-circle__circle--how {
  filter: saturate(0.35) brightness(1.08);
}

.golden-circle:is([data-stage="1"], [data-stage="2"]) .golden-circle__circle--what .golden-circle__label,
.golden-circle[data-stage="2"] .golden-circle__circle--how .golden-circle__label {
  opacity: 0.25;
}

/* Teksten: vaste lijst, enkel de actieve stap is donker (op het einde alle drie) */
.golden-circle__texts {
  display: flex;
  flex-direction: column;
  gap: 7vh;
}

.golden-circle__title {
  margin-bottom: 1vh;
}

.golden-circle__step {
  padding-left: clamp(0px, 4vw, 60px);
  opacity: 0.2;
  transition: opacity 0.5s ease;
}

.golden-circle__step-title {
  margin: 0 0 0.3em;
}

.golden-circle__step-text {
  margin: 0;
  max-width: 600px;
  line-height: 1.7em;
}

.golden-circle[data-stage="0"] .golden-circle__step--what,
.golden-circle[data-stage="1"] .golden-circle__step--how,
.golden-circle[data-stage="2"] .golden-circle__step--why,
.golden-circle[data-stage="3"] .golden-circle__step {
  opacity: 1;
}

/* Op desktop is de tekst altijd uitgeklapt; de wrapper is enkel nodig voor mobiel */
.golden-circle__step-body {
  display: grid;
  grid-template-rows: 1fr;
}

.golden-circle__step-body > * {
  min-height: 0;
  overflow: hidden;
}

@media screen and (max-width: 900px) {
  .golden-circle__sticky {
    height: 100vh;
    height: 100svh;
    align-items: flex-start;
    box-sizing: border-box;
    padding-top: 72px; /* ruimte voor de menu-knop bovenaan */
  }

  /* Kolom over de hele hoogte: bovenaan de cirkels (vullen de resterende ruimte), onderaan de tekst */
  .golden-circle__layout {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 1.5vh;
    height: 100%;
    box-sizing: border-box;
    padding-bottom: 20px;
  }

  /* De cirkels nemen alle ruimte die de tekst overlaat. Hoe meer tekst zichtbaar is, hoe kleiner ze worden. */
  .golden-circle__circles {
    order: 0;
    flex: 1 1 0;
    min-height: 120px;
    width: 100%;
    max-width: 560px;
    aspect-ratio: auto;
    align-self: center;
    box-sizing: border-box;
    padding: 14px;                 /* ruimte rondom, zodat de cirkel niet tegen tekst of rand plakt */
    container-type: size;
  }

  /* Diameter = het kleinste van de beschikbare breedte en hoogte (en --gc-max). */
  .golden-circle {
    --gc-max: 9999px;                  /* tijdens de stappen: zo groot als de ruimte toelaat */
  }

  .golden-circle[data-stage="3"] {
    --gc-max: min(46vw, 22svh);        /* eindstand (alle tekst zichtbaar): de cirkel wordt klein */
  }

  .golden-circle__circle--what { width: min(100cqw, 100cqh, var(--gc-max)); }
  .golden-circle__circle--how  { width: calc(min(100cqw, 100cqh, var(--gc-max)) * 0.6666); }
  .golden-circle__circle--why  { width: calc(min(100cqw, 100cqh, var(--gc-max)) * 0.3333); }

  .golden-circle__circle {
    font-size: calc(min(100cqw, 100cqh, var(--gc-max)) * 0.045);
    transition: opacity 0.6s ease, transform 0.6s ease, filter 0.6s ease, width 0.5s ease, font-size 0.5s ease;
  }

  .golden-circle__texts {
    flex: none;
    width: 100%;
    gap: 1.5vh;
  }

  .golden-circle__title {
    font-size: 2.2em;
    margin: 0;
  }

  .golden-circle__step {
    padding-left: 0;
  }

  .golden-circle__step-title {
    margin-bottom: 0.2em;
  }

  .golden-circle__step-text {
    font-size: 0.85em;
    line-height: 1.45em;
  }

  /* Enkel de actieve tekst is uitgeklapt; de kopjes van de andere stappen blijven staan */
  .golden-circle__step-body {
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.5s ease;
  }

  .golden-circle[data-stage="0"] .golden-circle__step--what .golden-circle__step-body,
  .golden-circle[data-stage="1"] .golden-circle__step--how .golden-circle__step-body,
  .golden-circle[data-stage="2"] .golden-circle__step--why .golden-circle__step-body,
  .golden-circle[data-stage="3"] .golden-circle__step-body {
    grid-template-rows: 1fr;
  }
}

/* Tablet (staand): meer ruimte, dus leesbaardere tekst */
@media screen and (min-width: 601px) and (max-width: 900px) and (min-height: 700px) {
  .golden-circle__step-text {
    font-size: 1em;
  }
}