:root {
  --night: #1b2033;
  --slate: #2e3550;
  --dusk: #6b5e8a;
  --snow: #f4f7ff;
  --ember: #f2b48a;
  --lavender: #b9b2e6;
}

*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--night);
  color: var(--snow);
  font-family: "Nunito", system-ui, sans-serif;
  overflow: hidden;
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.stage {
  position: fixed;
  inset: 0;
  overflow: hidden;
  isolation: isolate;
}

body.is-loading .stage { opacity: 0; }

.layer { position: absolute; inset: 0; pointer-events: none; }
.mist { opacity: 0; }

/* Scene */
.scene { transform-origin: 50% 60%; }
.scene picture { position: absolute; inset: 0; }
.scene-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 45%;
  image-rendering: pixelated;
}
.scene-day { opacity: 0; }

/* Birds: 4-frame pixel sprite (40x40 cells) cycling through the wing beat */
.bird {
  position: absolute;
  left: 0; top: 0;
  width: 40px; height: 40px;
  transform-origin: 0 0;
  will-change: transform;
}
.bird::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url(assets/bird-sprite.png) 0 0 / 160px 40px no-repeat;
  image-rendering: pixelated;
  animation: flap var(--flap-rate, .45s) steps(4) infinite;
  animation-delay: var(--flap-delay, 0s);
}
/* Gliding: wings held level (frame 2) with the beat paused */
.bird.gliding::before {
  animation: none;
  background-position: -40px 0;
}

@keyframes flap {
  to { background-position: -160px 0; }
}

/* Mist: Gemini-painted haze (brightness baked into alpha), drifting on the
   compositor with a CSS animation. No blur filter, so it stays cheap. */
.mist-band {
  position: absolute;
  left: -15%;
  width: 130%;
  height: 26%;
  background: url(assets/mist.webp) center / 100% 100% no-repeat;
  image-rendering: pixelated;
  /* Fade all four edges so bands never show a hard top, bottom or end. */
  -webkit-mask-image:
    linear-gradient(90deg, transparent, #000 18%, #000 82%, transparent),
    linear-gradient(transparent, #000 35%, #000 65%, transparent);
  -webkit-mask-composite: source-in;
  mask-image:
    linear-gradient(90deg, transparent, #000 18%, #000 82%, transparent),
    linear-gradient(transparent, #000 35%, #000 65%, transparent);
  mask-composite: intersect;
  will-change: transform;
}
/* Two light layers: a faint valley haze and a little ground mist. */
.mist-a { top: 52%; height: 18%; opacity: .18; animation: mist-drift 52s ease-in-out infinite alternate; }
.mist-d { top: 80%; height: 16%; opacity: .16; animation: mist-drift 38s ease-in-out -5s infinite alternate; }
@keyframes mist-drift {
  from { transform: translate3d(-6%, 0, 0); }
  to { transform: translate3d(6%, 0, 0); }
}
@media (prefers-reduced-motion: reduce) {
  .mist-band { animation: none; }
}

.vignette {
  background:
    radial-gradient(ellipse at 50% 22%, rgba(27, 32, 51, .6), transparent 55%),
    linear-gradient(to bottom, rgba(27, 32, 51, .35), transparent 35%, transparent 75%, rgba(27, 32, 51, .55));
}

/* Hero */
.hero {
  position: absolute;
  left: 50%;
  top: 4vh;
  transform: translateX(-50%);
  width: min(94vw, 900px);
  text-align: center;
  z-index: 2;
}

.logo-wrap {
  position: relative;
  width: clamp(280px, 46vw, 720px);
  margin: 0 auto;
  opacity: 0;
  will-change: transform, opacity;
}

/* Soft light pool behind the name so it reads as the highlight of the page */
.logo-halo {
  position: absolute;
  left: 50%; top: 50%;
  width: 130%; height: 220%;
  transform: translate(-50%, -50%);
  background: radial-gradient(closest-side, rgba(255, 226, 196, .45), rgba(185, 178, 230, .22) 45%, transparent 75%);
  filter: blur(6px);
  opacity: 0;
}

.logo {
  position: relative;
  filter:
    drop-shadow(0 8px 20px rgba(27, 32, 51, .6))
    drop-shadow(0 0 16px rgba(244, 247, 255, .2));
}
.logo-full { display: block; width: 100%; height: auto; }

/* The tagline reads like an old inscription: carved serif capitals, wide
   tracking, an ember glow, framed by lines that fade into the dark. */
.tagline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(10px, 1.6vw, 22px);
  margin: clamp(12px, 2.4vh, 24px) auto 0;
  font-family: "Cinzel", "Times New Roman", serif;
  font-size: clamp(12px, 1.35vw, 18px);
  font-weight: 500;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: #f1e9ff;
  text-shadow:
    0 0 12px rgba(242, 180, 138, .55),
    0 0 28px rgba(185, 178, 230, .35),
    0 2px 6px rgba(15, 18, 32, .95);
  opacity: 0;
}
.tag-text { padding-left: .32em; } /* balance the trailing letter-spacing */
.tag-text .w { display: inline-block; white-space: pre; }
.tag-line {
  flex: 0 0 clamp(24px, 5vw, 90px);
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(242, 200, 160, .85));
  box-shadow: 0 0 8px rgba(242, 180, 138, .6);
}
.tag-line:last-child { background: linear-gradient(270deg, transparent, rgba(242, 200, 160, .85)); }
@media (max-width: 520px) {
  .tagline { letter-spacing: .2em; font-size: 11px; }
  .tag-line { flex-basis: 16px; }
  .tag-text { max-width: 78vw; line-height: 1.7; }
}

.coming {
  display: inline-block;
  margin: clamp(12px, 2.2vh, 22px) 0 0;
  padding: .9em 1.3em;
  font-family: "Press Start 2P", monospace;
  font-size: clamp(10px, 1.2vw, 14px);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--snow);
  background: rgba(27, 32, 51, .55);
  border: 3px solid var(--lavender);
  box-shadow: 4px 4px 0 var(--slate), 0 0 24px rgba(242, 180, 138, .25);
  opacity: 0;
}

/* Soft, irregular Gemini cloud layers share a breeze and clear at unequal
   times. Centre by the actual image dimensions, including in portrait. */
.clouds { z-index: 3; overflow: hidden; contain: strict; }
/* Preserve the original bank's proportions. The fixed contours follow its
   painted inner edges; main.js maps source pixels through background-cover. */
.cloud-gate {
  position: absolute;
  inset: -6%;
  z-index: 20;
  background: url(assets/cloud-cover.webp) center / cover no-repeat;
  image-rendering: pixelated;
  will-change: transform, opacity;
}
.cloud-gate-left { clip-path: inset(0 50% 0 0); }
.cloud-gate-right { clip-path: inset(0 0 0 50%); }
.cloud-haze {
  position: absolute;
  inset: -6%;
  background:
    url(assets/cloud-cover.webp) center / cover no-repeat,
    radial-gradient(ellipse at 54% 60%, #b5a5ad 0%, #9690a6 42%, #686d8b 100%);
  will-change: transform, opacity;
}
.cloud {
  position: absolute;
  left: 50%; top: 50%;
  height: auto;
  opacity: 0;
  image-rendering: pixelated;
  will-change: transform, opacity;
}

/* Long low cloud banks that keep drifting along the slopes after the reveal */
.banks { opacity: 0; will-change: transform; }
.bank {
  position: absolute;
  left: 0; top: 0;
  height: auto;
  image-rendering: pixelated;
  will-change: transform;
}
.bank-banner { transform-origin: 0 50%; }  /* stretches away from the summit */

/* First light on the snowy summits: a warm bloom when the peaks are revealed,
   then a slow shimmer, as if the snow catches the coming dawn. */
.peak-light {
  position: absolute;
  left: 0; top: 0;
  width: 26vmin;
  height: 26vmin;
  margin: -13vmin 0 0 -13vmin;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(255, 244, 228, .75), rgba(255, 214, 178, .32) 45%, rgba(242, 180, 138, 0) 100%);
  mix-blend-mode: screen;
  opacity: 0;
  pointer-events: none;
  will-change: opacity;
}
.peak-light.lit { animation: peak-shimmer 6s ease-in-out infinite alternate; }

@keyframes peak-shimmer {
  from { opacity: .55; }
  to { opacity: .65; }
}
@media (prefers-reduced-motion: reduce) {
  .peak-light { opacity: .55; }
  .peak-light.lit { animation: none; }
}

/* Foreground pines that bend in the wind from their base */
.trees { opacity: 0; }
.tree {
  position: absolute;
  bottom: -2vh;
  height: auto;
  image-rendering: pixelated;
  transform-origin: 50% 100%;
  will-change: transform;
}

/* Pixel-styled button to watch the cloud reveal again */
.replay {
  position: absolute;
  right: max(16px, env(safe-area-inset-right));
  bottom: max(16px, env(safe-area-inset-bottom));
  z-index: 5;
  display: inline-flex;
  align-items: center;
  gap: .6em;
  padding: .85em 1.1em;
  font: 400 clamp(9px, 1vw, 11px)/1 "Press Start 2P", monospace;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--snow);
  background: rgba(27, 32, 51, .6);
  border: 2px solid rgba(185, 178, 230, .7);
  box-shadow: 3px 3px 0 var(--slate);
  cursor: pointer;
  opacity: 0;
  transition: background .2s, transform .1s, box-shadow .1s;
}
.replay span { font-family: system-ui, sans-serif; font-size: 1.5em; line-height: .6; }
.replay:hover { background: rgba(46, 53, 80, .85); }
.replay:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--slate); }
.replay:focus-visible { outline: 3px solid var(--ember); outline-offset: 3px; }
.replay[hidden] { display: none; }
@media (prefers-reduced-motion: reduce) { .replay { display: none; } }

.foot {
  position: absolute;
  left: 0; right: 0;
  bottom: max(14px, env(safe-area-inset-bottom));
  z-index: 2;
  text-align: center;
  font-size: 12px;
  color: rgba(244, 247, 255, .6);
  text-shadow: 0 1px 6px rgba(27, 32, 51, .9);
}

/* Portrait: the wide scene is cropped, so anchor it to the bottom and let a
   matching sky fill the space above for the name. */
@media (orientation: portrait) {
  .scene { background: linear-gradient(to bottom, #3c4361, #4d4f72 60%, #5a5578); }
  .scene picture {
    top: auto;
    height: 54%;
    -webkit-mask-image: linear-gradient(to bottom, transparent, #000 22%);
    mask-image: linear-gradient(to bottom, transparent, #000 22%);
  }
  .scene-img { object-position: 50% 100%; }
  .hero { top: 8vh; }
  .logo-wrap { width: clamp(260px, 86vw, 620px); }
}

@media (prefers-reduced-motion: reduce) {
  .clouds, .birds, .banks { display: none; }
  .logo-wrap, .logo-halo, .tagline, .coming, .mist { opacity: 1; }
}