/**
 * Hero card, CSS 3D.
 *
 * A two-sided card flip is a transform, not a scene, so it does not need
 * WebGL. This works with hardware acceleration disabled, on every browser the
 * site supports, at ~1 KB, and it keeps the card's content as real text that
 * screen readers and crawlers can reach. Three.js is still loaded site-wide
 * for the ambient layer; it is simply the wrong tool for this one job.
 */

.cf-card {
  perspective: 1400px;
  /* 85.6 x 54 mm, the real business-card ratio */
  aspect-ratio: 85.6 / 54;
}

.cf-card__inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 700ms cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}

.cf-card.is-flipped .cf-card__inner {
  transform: rotateY(180deg);
}

.cf-card__face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 40px 80px -30px rgba(5, 59, 73, 0.45);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.cf-card__back {
  transform: rotateY(180deg);
}

/* A gentle rest angle so the object reads as physical, removed on hover/focus
   so the card squares up when the visitor engages with it. */
@media (hover: hover) and (min-width: 1024px) {
  .cf-card:not(.is-flipped) .cf-card__inner {
    transform: rotateY(-9deg) rotateX(3deg);
  }
  .cf-card:not(.is-flipped):hover .cf-card__inner,
  .cf-card:not(.is-flipped):focus-within .cf-card__inner {
    transform: rotateY(0deg) rotateX(0deg);
  }
}

/* Reduced motion: the flip still works, it just stops being an animation,
   and the resting tilt is dropped entirely. */
@media (prefers-reduced-motion: reduce) {
  .cf-card__inner {
    transition: none;
  }
  .cf-card:not(.is-flipped) .cf-card__inner,
  .cf-card:not(.is-flipped):hover .cf-card__inner {
    transform: none;
  }
}

/* backface-visibility is unreliable in a few older engines; if the browser
   cannot do 3D transforms at all, show the front and hide the back rather
   than stacking both. */
@supports not (transform-style: preserve-3d) {
  .cf-card__back { display: none; }
}