/* Full-viewport opening, followed by water footage over the interactive
   white homepage. White compositing is enabled only at the verified reveal cue. */
.water-intro-overlay {
  --water-intro-paper: #000;
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: none;
  overflow: hidden;
  isolation: isolate;
  background: var(--water-intro-paper);
  color: #fff;
  outline: none;
  overscroll-behavior: contain;
}
html[data-water="opening"],
html[data-water="opening"] body[data-page="home"] {
  overflow: hidden !important;
  overscroll-behavior: none;
  background: #000;
}
html[data-water="opening"] body[data-page="home"] > :not([data-water-intro-overlay]) {
  visibility: hidden !important;
  pointer-events: none !important;
}
html[data-water="opening"] body[data-page="home"] > [data-water-intro-overlay]:not([hidden]),
html[data-water="draining"] body[data-page="home"] > [data-water-intro-overlay]:not([hidden]) {
  display: block;
  visibility: visible;
}
body[data-page="home"] .water-intro-overlay:focus { outline: none; }
/* The entire remaining video layer multiplies with the page: its white plate
   disappears, while the water footage remains. Do not enable before white. */
html[data-water="draining"] .water-intro-overlay {
  background: transparent;
  pointer-events: none;
  mix-blend-mode: multiply;
  isolation: auto;
}
html[data-water="draining"] .water-intro-brand,
html[data-water="draining"] .water-intro-access { display: none !important; }

.water-intro-media {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  object-fit: contain;
  object-position: center;
  opacity: 0;
  filter: none !important;
  mask-image: none !important;
  -webkit-mask-image: none !important;
  pointer-events: none;
}
.water-intro-media.is-ready { opacity: 1; }
.water-intro-brand {
  position: absolute;
  z-index: 1;
  left: 50%;
  top: var(--water-intro-logo-y, 50%);
  width: clamp(240px, 24vw, 360px);
  padding: 12px 16px;
  background: #fff;
  border-radius: 3px;
  transform: translate(-50%, -50%);
  pointer-events: none;
}
.water-intro-brand img {
  display: block;
  width: 100%;
  height: auto;
  max-width: none;
  opacity: 1;
  filter: none !important;
  mix-blend-mode: normal;
}
/* Intro controls remain available to keyboard/screen-reader users without
   adding visible interface to the water-and-logo opening. */
.water-intro-access {
  position: absolute;
  left: 24px;
  top: 24px;
  z-index: 2;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
.water-intro-access:focus {
  width: auto;
  height: auto;
  min-height: 44px;
  padding: 12px 18px;
  margin: 0;
  overflow: visible;
  clip: auto;
  clip-path: none;
  white-space: normal;
  border: 1px solid #fff;
  border-radius: 3px;
  background: #111;
  color: #fff;
  font: 15px/1.3 Arial, sans-serif;
  outline: 3px solid #e60012;
  outline-offset: 4px;
}
.water-intro-pause { top: 84px; }
.water-intro-overlay[hidden],
.water-intro-overlay [hidden] { display: none !important; }
/* Prevent previous hero decorations surviving in the final white page while
   older markup is replaced. They are not animation or error fallbacks. */
body[data-page="home"] .water-scene,
body[data-page="home"] .water-opening-logo { display: none !important; }
html:not([data-water="opening"]) body[data-page="home"] .water-copy {
  opacity: 1;
  transform: none;
}
@media (max-width: 680px) {
  .water-intro-media {
    inset: auto;
    left: 50%;
    top: var(--water-intro-media-y, 50%);
    width: 200vw;
    height: auto;
    aspect-ratio: 16 / 9;
    transform: translate(-50%, -50%);
  }
  .water-intro-brand { width: min(230px, 60vw); }
  .water-intro-access { left: 20px; top: 20px; }
  .water-intro-pause { top: 80px; }
}
@media (prefers-reduced-motion: reduce) {
  .water-intro-overlay { transition: none; }
}