/* ==========================================================================
   Opening sequence: a photo drifts through space, is struck by lightning, falls
   to Earth as a meteor and lands as a PDF that opens into the landing page.
   Drawn by intro.js. Everything here is scoped to #intro.
   ========================================================================== */

#intro {
  position: fixed;
  inset: 0;
  z-index: 2000;
  overflow: hidden;
  background: #02030a;
  color: #fbfaf7;
  font-family: var(--font-sans, system-ui, sans-serif);
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
  /* Failsafe: if the script never runs or stalls, the overlay lets go on its own and never traps the site. */
  animation: introFailsafe 0.01s linear 14s forwards;
}

@keyframes introFailsafe {
  to { visibility: hidden; pointer-events: none; }
}

/* Skipped or finished: never paint it, so the landing page is the first thing seen. */
html.no-intro #intro,
#intro[hidden] {
  display: none;
}

#intro-stage {
  position: absolute;
  inset: -7%;               /* spare edge so a shake never shows a gap */
  will-change: transform;
}

#intro-gl,
#intro-fx,
#intro-paper {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

#intro-paper {
  pointer-events: none;
  visibility: hidden;
}

#intro-photo,
#intro-pdf {
  position: absolute;
  left: 0;
  top: 0;
  pointer-events: none;
  will-change: transform, opacity, filter;
  visibility: hidden;
}

#intro-photo svg,
#intro-pdf svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
}

#intro-wordmark {
  position: absolute;
  left: 0;
  right: 0;
  text-align: center;
  font-family: var(--font-display, 'Syne', sans-serif);
  font-weight: 800;
  letter-spacing: 0.34em;
  font-size: clamp(13px, 1.7vw, 22px);
  color: #fbfaf7;
  text-shadow: 0 0 24px rgba(255, 150, 70, 0.55);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

#intro-wordmark small {
  display: block;
  margin-top: 0.7em;
  font-family: var(--font-mono, ui-monospace, monospace);
  font-weight: 400;
  font-size: 0.5em;
  letter-spacing: 0.28em;
  color: #e0a070;
}

#intro-skip {
  position: absolute;
  top: calc(env(safe-area-inset-top, 0px) + 16px);
  right: calc(env(safe-area-inset-right, 0px) + 16px);
  z-index: 2;
  appearance: none;
  border: 1px solid rgba(251, 250, 247, 0.28);
  background: rgba(10, 8, 8, 0.45);
  color: rgba(251, 250, 247, 0.85);
  font: 600 11px/1 var(--font-mono, ui-monospace, monospace);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 9px 14px;
  border-radius: 999px;
  cursor: pointer;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  opacity: 0;
}

#intro-skip:hover,
#intro-skip:focus-visible {
  background: rgba(194, 65, 12, 0.85);
  border-color: rgba(255, 190, 140, 0.8);
  color: #fff;
  outline: none;
}

/* Reduced motion: no flying, shaking or flashing; a short calm fade instead. */
@media (prefers-reduced-motion: reduce) {
  #intro-skip { transition: none; }
}

.intro-pg {
  position: absolute;
  inset: 0;
  transform-origin: 50% 55%;
}