:root {
  --base: #080D18;
  --earth: #9DCFFA;
  --type: #E7EDF7;
  --annotation: #8997AF;
  --serif: 'Newsreader', Georgia, serif;
  --sans: 'Inter', system-ui, sans-serif;
  --beat-size: clamp(1.5rem, 2.6vw + 0.8rem, 2.6rem);
  --anchor-vh: 50;
}
@media (max-width: 599px) { :root { --anchor-vh: 62; } }

* { box-sizing: border-box; }
html { background: var(--base); }
body { margin: 0; background: var(--base); color: var(--type); font-family: var(--sans); }
body.is-begin, html.is-begin { overflow: hidden; }

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

#canvas { position: fixed; inset: 0; z-index: 0; width: 100%; height: 100%; display: block; }

#film { position: relative; z-index: 1; outline: none; }
.movement { position: relative; height: calc(var(--h) * var(--vh, 1vh)); }
.beat {
  position: absolute; left: 50%; margin: 0;
  width: min(30ch, calc(100vw - 2rem));
  transform: translate(-50%, -50%);
  font-family: var(--serif); font-weight: 400; line-height: 1.35;
  font-size: var(--beat-size);
  color: var(--type); text-align: center; text-wrap: balance;
  opacity: 0; pointer-events: none;
}
@media (max-width: 599px) { .beat { width: min(22ch, calc(100vw - 2rem)); } }

#ending { position: relative; z-index: 1; min-height: calc(var(--vh, 1vh) * 100); }

#begin {
  position: fixed; inset: 0; z-index: 10; background: var(--base);
  display: flex; align-items: center; justify-content: center; padding: 1rem;
  transition: opacity 900ms ease, visibility 0s linear 900ms;
}
#begin.is-gone { opacity: 0; visibility: hidden; pointer-events: none; }
.begin-choices { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; margin: 0; }
#begin button {
  font: 400 0.95rem/1 var(--sans); letter-spacing: 0.02em; color: var(--type);
  background: transparent; border: 1px solid rgba(231, 237, 247, 0.35);
  border-radius: 999px; padding: 0.85rem 1.5rem; min-height: 44px; cursor: pointer;
  transition: border-color 200ms ease, color 200ms ease;
}
#begin button:hover { border-color: var(--earth); color: var(--earth); }
:focus-visible { outline: 2px solid var(--earth); outline-offset: 3px; }

#corner {
  position: fixed; right: 1rem; bottom: 1rem; z-index: 5;
  display: flex; gap: 1.25rem; align-items: center;
  font: 400 0.8rem/1 var(--sans); letter-spacing: 0.08em;
  color: var(--annotation); opacity: 0.85; transition: opacity 200ms ease;
}
/* .only-m4 shows only while main.js sets body[data-movement="3"] (Movement 4, the look-back). */
#corner .only-m4 { display: none; }
body[data-movement="3"] #corner .only-m4 { display: inline-flex; }
#corner:hover, #corner:focus-within { opacity: 1; }
#corner a, #corner button {
  color: inherit; font: inherit; letter-spacing: inherit; text-decoration: none;
  background: none; border: 0; padding: 0.6rem 0.4rem; cursor: pointer;
  display: inline-flex; align-items: center; min-height: 44px; min-width: 44px; justify-content: center;
}
#toggle-sound[aria-pressed="false"] { text-decoration: line-through; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0ms !important; animation-duration: 0ms !important; }
  #corner { transition: opacity 200ms ease !important; }
  #begin { transition: opacity 200ms ease, visibility 0s linear 200ms !important; }
}

/* Ending (Movement 5) */
#ending { background: transparent; padding-inline: 1rem; text-align: center; }
#ending #hold { height: calc(var(--vh, 1vh) * 150); }
#ending #title { padding-block: calc(var(--vh, 1vh) * 10) calc(var(--vh, 1vh) * 14); }
#ending #title h2 { margin: 0 0 1rem; font: 400 clamp(1.5rem, 1.6vw + 1rem, 2.2rem)/1.2 var(--serif); color: var(--type); }
#ending #title p { margin: 0 auto; max-width: 34ch; font: 400 0.85rem/1.5 var(--sans); color: var(--annotation); }
#ending #credits { max-width: 34rem; margin-inline: auto; padding-block: 0 calc(var(--vh, 1vh) * 14); font: 400 0.9rem/1.6 var(--sans); }
#ending .credits-column { list-style: none; margin: 0; padding: 0; }
#ending .credit { margin-bottom: 3.5rem; }
#ending .credit p, .about .credit p { margin: 0; }
#ending .credit-title, .about .credit-title { color: var(--type); }
#ending .credit-line, #ending .credit-licence, #ending .credit-fixed,
.about .credit-line, .about .credit-licence, .about .credit-fixed { color: var(--annotation); }
#ending .credit-fixed { margin: 0 0 2rem; }
#ending a, .about a, .transcript a { color: var(--annotation); text-decoration-color: rgba(137, 151, 175, 0.5); text-underline-offset: 0.2em; transition: color 200ms ease; }
#ending a:hover, .about a:hover, .transcript a:hover { color: var(--earth); }
#ending #signup { max-width: 30rem; margin-inline: auto; padding-block: calc(var(--vh, 1vh) * 8); font: 400 0.95rem/1.6 var(--sans); color: var(--type); }
#ending #signup > p { margin: 0 0 0.75rem; }
#ending #signup > p:nth-of-type(2) { color: var(--annotation); font-size: 0.85rem; margin-bottom: 1.75rem; }
#ending #signup form { display: flex; flex-wrap: wrap; gap: 0.75rem; justify-content: center; }
#ending #signup input[type=email] {
  flex: 1 1 14rem; min-width: 0; min-height: 44px; padding: 0 1rem; font: 400 0.95rem/1 var(--sans);
  color: var(--type); background: transparent; border: 1px solid rgba(231, 237, 247, 0.35); border-radius: 999px;
}
#ending #signup input[type=email]::placeholder { color: var(--annotation); }
#ending #signup button {
  min-height: 44px; padding: 0 1.5rem; font: 400 0.95rem/1 var(--sans); color: var(--type); background: transparent;
  border: 1px solid rgba(231, 237, 247, 0.35); border-radius: 999px; cursor: pointer;
  transition: border-color 200ms ease, color 200ms ease;
}
#ending #signup button:hover:not(:disabled) { border-color: var(--earth); color: var(--earth); }
#ending #signup button:disabled { opacity: 0.6; cursor: default; }
#ending #signup .note { flex-basis: 100%; margin: 0; min-height: 1.5em; font-size: 0.85rem; color: var(--annotation); }
#ending .hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
#ending .signup-thanks { margin: 0; padding-block: 1rem; font: 400 1.1rem/1.4 var(--serif); color: var(--type); }
#ending #footer { padding-block: calc(var(--vh, 1vh) * 4) calc(var(--vh, 1vh) * 12); font: 400 0.8rem/1.6 var(--sans); letter-spacing: 0.08em; color: var(--annotation); }
#ending #footer a { margin-inline: 0.5rem; }

/* About and transcript pages */
.about, .transcript { max-width: 38rem; margin: 0 auto; padding: 4rem 1rem 6rem; font: 400 1rem/1.7 var(--sans); color: var(--type); }
.about h1, .transcript h1 { font: 400 clamp(1.5rem, 1.6vw + 1rem, 2.2rem)/1.2 var(--serif); margin: 0 0 2rem; }
.about h2, .transcript h2 { font: 400 1.4rem/1.3 var(--serif); margin: 3rem 0 1rem; }
.about p, .transcript p { margin: 0 0 1.1rem; }
.about .credits-list { list-style: none; margin: 0 0 1.5rem; padding: 0; }
.about .credit { margin-bottom: 1.5rem; }
.about .back, .transcript .back { display: inline-block; margin-bottom: 2rem; font: 400 0.8rem/1 var(--sans); letter-spacing: 0.08em; }
.transcript .note { color: var(--annotation); }
.transcript .act { margin-bottom: 1rem; }

/* Fallback stills (no WebGL, context lost): one image per movement, crossfaded. */
.stills { position: fixed; inset: 0; z-index: 0; background: #080D18; }
.still { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: opacity 900ms ease; }
@media (prefers-reduced-motion: reduce) { .still { transition-duration: 300ms; } }
/* ?pose= still-render mode: nothing but the canvas. */
.is-pose #film, .is-pose #corner, .is-pose #begin, .is-pose #ending { display: none !important; }