/* Doonvarra Head Observatory. A red-lit page: nothing on it is brighter than a torch allows. */

:root {
  --sc-canvas:      #06080c;
  --sc-surface:     #0d1016;
  --sc-ink:         #f3e3dd;
  --sc-ink-soft:    #cdb3ac;
  --sc-accent:      #ff5f50;
  --sc-accent-ink:  #1c0705;
  --sc-font-display: "Bricolage Grotesque", "Hanken Grotesk", system-ui, sans-serif;
  --sc-font-text:    "Hanken Grotesk", system-ui, sans-serif;
  --sc-shadow-color: 220 40% 2%;
  --sc-t-3xl: clamp(2.4rem, 1.5rem + 3.8vw, 4.6rem);
  --sc-t-2xl: clamp(1.95rem, 1.45rem + 2.2vw, 3.2rem);
  --bar-h: 3.25rem;
  --red-line: color-mix(in oklab, var(--sc-accent) 38%, transparent);
}

body { font-weight: 400; }
.sc-display { font-weight: 600; }
.sc-lede { font-size: clamp(1.12rem, 1.02rem + 0.5vw, 1.45rem); }
.sc-body { color: var(--sc-ink-soft); }
::selection { background: var(--sc-accent); color: var(--sc-accent-ink); }

/* ------------------------------------------------------------ the bar -- */
.bar {
  position: fixed; inset: 0 0 auto 0; z-index: var(--sc-z-chrome);
  height: var(--bar-h);
  display: flex; align-items: center; justify-content: space-between; gap: var(--sc-4);
  padding-inline: var(--sc-gutter);
  background: var(--sc-canvas);
  border-bottom: 1px solid var(--red-line);
}
.bar__mark {
  display: inline-flex; align-items: center; gap: var(--sc-3);
  font-family: var(--sc-font-display); font-weight: 600; font-size: 1.02rem; letter-spacing: -0.01em;
  color: var(--sc-ink); text-decoration: none;
}
.bar__eye { color: var(--sc-accent); flex: none; }
.bar__now {
  font-family: var(--sc-font-display); font-weight: 500; font-size: var(--sc-t-sm);
  letter-spacing: var(--sc-track-wide); text-transform: uppercase; color: var(--sc-ink-soft);
  white-space: nowrap;
}

.cta {
  display: inline-flex; align-items: center; justify-content: center; white-space: nowrap;
  min-height: 3rem; padding: 0 var(--sc-6);
  font-family: var(--sc-font-display); font-weight: 600; font-size: 1.05rem; letter-spacing: -0.005em;
  color: var(--sc-accent-ink); background: var(--sc-accent);
  border-radius: var(--sc-r-md); text-decoration: none;
  transition: transform 140ms var(--sc-ease-out), background-color 140ms var(--sc-ease-out);
}
.cta:active { transform: scale(0.97); }
.cta--small { min-height: 2.25rem; padding: 0 var(--sc-4); font-size: 0.95rem; }
@media (hover: hover) and (pointer: fine) {
  .cta:hover { background: color-mix(in oklab, var(--sc-accent) 82%, white); }
}

/* the watch log: nine dots down the left edge, on wide screens only */
.log { display: none; }
@media (min-width: 1180px) {
  .log {
    display: flex; flex-direction: column; gap: 0.15rem;
    position: fixed; left: clamp(0.9rem, 1.6vw, 1.6rem); top: 50%; translate: 0 -50%;
    z-index: calc(var(--sc-z-chrome) - 1);
  }
  .log a {
    display: flex; align-items: center; gap: var(--sc-3);
    width: 2.25rem; height: 1.6rem; color: var(--sc-ink); text-decoration: none; position: relative;
  }
  .log a::before {
    content: ""; width: 7px; height: 7px; border-radius: 50%;
    border: 1.5px solid var(--sc-ink-soft); background: transparent; flex: none; margin-left: 0.4rem;
    transition: background-color 160ms var(--sc-ease-out), border-color 160ms var(--sc-ease-out), transform 160ms var(--sc-ease-out);
  }
  .log a.is-on::before { background: var(--sc-accent); border-color: var(--sc-accent); transform: scale(1.35); }
  .log a span {
    position: absolute; left: 2rem; top: 50%; translate: 0 -50%;
    padding: 0.2rem 0.6rem; background: var(--sc-canvas); border: 1px solid var(--red-line); border-radius: var(--sc-r-sm);
    font-size: var(--sc-t-xs); white-space: nowrap; opacity: 0; pointer-events: none;
    transition: opacity 140ms var(--sc-ease-out);
  }
  .log a:is(:hover, :focus-visible) span { opacity: 1; }
}
@media (max-width: 720px) { .bar__now { display: none; } }

/* ------------------------------------------------------------- 1 hero -- */
.hero {
  position: relative; isolation: isolate; overflow: clip;
  margin-top: var(--bar-h);
  min-height: calc(100svh - var(--bar-h));
  display: flex; align-items: flex-start;
  --sw: max(100vw, calc(150svh));
}
.hero__scene {
  position: absolute; bottom: 0; z-index: 0;
  width: var(--sw); aspect-ratio: 3 / 2;
  left: clamp(calc(100vw - var(--sw)), calc(50vw - 0.72 * var(--sw)), 0px);
}
.plane { position: absolute; left: 0; width: 100%; will-change: transform; }
.plane img { width: 100%; height: 100%; max-width: none; }
.plane--sky  { top: 0;      height: 41.99%; }
.plane--land { top: 32.23%; height: 53.71%; }
.plane--fore { top: 67.38%; height: 32.62%; }
.plane--sky img { filter: brightness(0.5) saturate(0.85); }
.plane--land img { filter: brightness(0.82); }
.hero__scrim {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background:
    linear-gradient(90deg, color-mix(in oklab, var(--sc-canvas) 88%, transparent) 0%, color-mix(in oklab, var(--sc-canvas) 62%, transparent) 38%, transparent 66%),
    linear-gradient(180deg, color-mix(in oklab, var(--sc-canvas) 70%, transparent) 0%, transparent 40%);
}
.hero__copy {
  position: relative; z-index: 2;
  width: 100%; max-width: 50rem;
  margin-top: clamp(2.5rem, 12svh, 7.5rem);
  padding-inline: var(--sc-gutter);
  padding-left: max(var(--sc-gutter), 4.4rem);
}
.hero__title { font-size: clamp(2.75rem, 1.2rem + 5.4vw, 5.5rem); line-height: 0.98; max-width: 11em; }
.hero__copy .sc-lede { max-width: 30ch; }
@media (max-width: 860px) {
  .hero__copy { padding-left: var(--sc-gutter); }
  .hero__scrim {
    background: linear-gradient(180deg, color-mix(in oklab, var(--sc-canvas) 90%, transparent) 0%, color-mix(in oklab, var(--sc-canvas) 66%, transparent) 46%, transparent 74%);
  }
}

/* --------------------------------------------------------------- 2 dark -- */
.dark__stage { background: var(--sc-canvas); }
.dark__ground {
  position: absolute; inset: 0; width: 100%; height: 100%; max-width: none; object-fit: cover;
  opacity: 0.85; z-index: 0;
}
.dark__line {
  font-family: var(--sc-font-display); font-weight: 600;
  font-size: clamp(1.75rem, 1.2rem + 2.6vw, 3.4rem); line-height: 1.08; letter-spacing: var(--sc-track-snug);
  text-wrap: balance; margin: 0; max-width: 20ch;
}
.dark__quote { margin: 0; max-width: min(46rem, 88vw); }
.dark__quote blockquote { margin: 0; }
.dark__quote .dark__line { max-width: 24ch; font-size: clamp(1.6rem, 1.1rem + 2.3vw, 3rem); }
.dark__quote figcaption {
  margin-top: var(--sc-5); color: var(--sc-ink-soft);
  font-size: var(--sc-t-sm); letter-spacing: var(--sc-track-wide); text-transform: uppercase;
}
.dark__stage .sc-scrim { z-index: 1; }
.dark__stage .sc-copy { z-index: 2; bottom: clamp(3.5rem, 14vh, 9rem); }
.dark__stage .sc-copy.dark__line { max-width: min(24ch, 88vw); }

/* ------------------------------------------------------------ 3 4pm -- */
.four { padding-top: clamp(3rem, 6vw, 6rem); }
.four__grid { display: grid; gap: var(--sc-7); align-items: start; }
@media (min-width: 900px) {
  .four__grid { grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: var(--sc-8); }
  .four__fig { position: sticky; top: calc(var(--bar-h) + 2rem); }
}
.four__text .sc-lede { max-width: 34ch; }
.steps { list-style: none; margin: var(--sc-6) 0 0; padding: 0; display: grid; gap: 0; border-top: 1px solid var(--red-line); }
.steps li { padding: var(--sc-4) 0; border-bottom: 1px solid var(--sc-hairline); color: var(--sc-ink-soft); max-width: 46ch; }
.steps b { color: var(--sc-ink); font-weight: 600; margin-right: 0.35em; }
.four__fig { margin: 0; }
.four__frame { position: relative; overflow: hidden; border-radius: var(--sc-r-md); aspect-ratio: 3 / 2; background: var(--sc-surface); box-shadow: var(--sc-e2); }
.four__frame img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; max-width: none; }
.four__clear { position: absolute; inset: 0; }
.four__fig figcaption, .eye__fig figcaption, .plate__art figcaption, .hud__note { color: var(--sc-ink-soft); font-size: var(--sc-t-sm); line-height: 1.5; }
.four__fig figcaption { margin-top: var(--sc-3); max-width: 52ch; }
.four__after { padding-top: var(--sc-9); }
.four__words { max-width: 46rem; }
.four__big {
  font-family: var(--sc-font-display); font-weight: 600; font-size: var(--sc-t-2xl); line-height: 1.04;
  letter-spacing: var(--sc-track-snug); text-wrap: balance; margin: 0;
}

/* ------------------------------------------------------------ 4 walk -- */
.walk__stage { display: flex; align-items: center; background: var(--sc-canvas); }
.rail { align-items: center; gap: clamp(1.75rem, 4vw, 4rem); padding-inline: var(--sc-gutter); padding-top: var(--bar-h); }
.frame { flex: none; margin: 0; width: min(calc(min(46svh, 27rem) * var(--ar, 1)), 84vw); }
.frame img { width: 100%; height: auto; border-radius: var(--sc-r-md); box-shadow: var(--sc-e2); }
.frame figcaption { margin-top: var(--sc-3); }
.frame h3 { font-family: var(--sc-font-display); font-weight: 600; font-size: var(--sc-t-xl); line-height: 1.05; margin: 0 0 var(--sc-2); letter-spacing: var(--sc-track-snug); }
.frame p { margin: 0; color: var(--sc-ink-soft); font-size: var(--sc-t-sm); max-width: 40ch; line-height: 1.5; }
.frame--lead { width: min(25rem, 82vw); }
.frame--end { width: min(27rem, 82vw); }
.frame--end .sc-lede { color: var(--sc-ink); }
@media (min-width: 900px) {
  .frame:nth-child(odd):not(.frame--lead):not(.frame--end) { margin-top: 3.5rem; }
  .frame:nth-child(even):not(.frame--lead):not(.frame--end) { margin-bottom: 3rem; }
}
/* a settle driven from the act's own progress: cards arrive rather than slide by */
@media (prefers-reduced-motion: no-preference) {
  .walk .frame:not(.frame--lead) {
    opacity: clamp(0.6, calc(0.6 + (var(--sc-p, 0) * 6.4 - var(--i, 0)) * 0.4), 1);
  }
  .walk .frame:nth-child(3) { --i: 1; } .walk .frame:nth-child(4) { --i: 2; }
  .walk .frame:nth-child(5) { --i: 3; } .walk .frame:nth-child(6) { --i: 4; }
  .walk .frame:nth-child(2) { --i: 0; }
}

/* ---------------------------------------------------- 5 twenty minutes -- */
.twenty__stage { background: var(--sc-canvas); }
.layer { position: absolute; inset: 0; display: block; z-index: 0; }
.layer img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 62%; max-width: none; }
.layer[data-layer="0"], .layer[data-layer="1"], .layer[data-layer="2"] { opacity: 0; }
.layer[data-layer="0"] { opacity: 1; }
.twenty__stage .sc-scrim { z-index: 1; --sc-scrim-a: 88%; }
.hud {
  position: absolute; z-index: 5; top: calc(var(--bar-h) + 0.9rem); left: var(--sc-gutter);
  display: grid; gap: var(--sc-2); max-width: 19rem; justify-items: start;
}
.clock {
  display: grid; gap: 0.1rem; padding: 0.55rem 0.9rem 0.6rem;
  background: var(--sc-canvas); border: 1px solid var(--red-line); border-radius: var(--sc-r-md);
}
.clock__label { font-size: var(--sc-t-xs); letter-spacing: var(--sc-track-wide); text-transform: uppercase; color: var(--sc-ink-soft); }
.clock__digits {
  font-family: var(--sc-font-display); font-weight: 600; font-size: clamp(2rem, 1.6rem + 1.6vw, 3rem);
  line-height: 1; letter-spacing: 0.02em; color: var(--sc-accent); font-variant-numeric: tabular-nums;
}
.hud__note {
  margin: 0; padding: 0.5rem 0.75rem; background: var(--sc-canvas);
  border: 1px solid var(--sc-hairline); border-radius: var(--sc-r-sm); font-size: var(--sc-t-xs);
}
.twenty__stage .sc-copy { z-index: 4; bottom: clamp(2.5rem, 10vh, 7rem); }
.twenty__line {
  font-family: var(--sc-font-display); font-weight: 600; margin: 0;
  font-size: clamp(1.45rem, 1.05rem + 1.9vw, 2.6rem); line-height: 1.1; letter-spacing: var(--sc-track-snug);
  max-width: min(30ch, 88vw); text-wrap: balance;
}
.twenty__line--first { font-size: clamp(1.9rem, 1.2rem + 3vw, 3.6rem); max-width: min(17ch, 88vw); }
.twenty__line--small { font-size: clamp(1.25rem, 1rem + 1.2vw, 2rem); font-weight: 500; max-width: min(34ch, 88vw); }
.twenty__line--payoff { font-size: clamp(1.4rem, 1.0rem + 1.7vw, 2.4rem); max-width: min(34ch, 88vw); }
@media (max-width: 700px) {
  .hud { max-width: none; right: var(--sc-gutter); grid-template-columns: auto 1fr; align-items: start; gap: var(--sc-2); }
  .hud__note { font-size: 0.7rem; line-height: 1.35; padding: 0.4rem 0.55rem; }
  .layer img { object-position: 52% 70%; }
}

/* ------------------------------------------------------ 6 camera / eye -- */
.eye { padding-top: clamp(4rem, 8vw, 8rem); }
.eye__text { max-width: 50rem; margin-inline: auto; padding-bottom: var(--sc-8); }
.eye__text > * { max-width: 40rem; }
.eye__text .sc-lede { max-width: 34ch; }
.eye__fig { margin: 0; max-width: 62rem; margin-inline: auto; }
.eye__frame {
  position: relative; overflow: hidden; border-radius: var(--sc-r-md); aspect-ratio: 3 / 2;
  max-height: 74svh; width: 100%; background: var(--sc-surface); box-shadow: var(--sc-e3);
}
.eye__frame img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; max-width: none; }
.eye__top { position: absolute; inset: 0; }
.tag {
  position: absolute; z-index: 3; padding: 0.3rem 0.65rem;
  background: var(--sc-canvas); color: var(--sc-ink); border: 1px solid var(--red-line); border-radius: var(--sc-r-sm);
  font-size: var(--sc-t-xs); letter-spacing: var(--sc-track-wide); text-transform: uppercase; line-height: 1.3;
}
.tag--camera { top: 0.9rem; left: 0.9rem; }
.tag--eye { bottom: 0.9rem; right: 0.9rem; }
.eye__fig figcaption { margin-top: var(--sc-3); max-width: 60ch; }

/* ----------------------------------------------------- 7 the telescopes -- */
.scopes__stage { background: var(--sc-canvas); }
.scopes__head {
  position: absolute; z-index: 6; top: calc(var(--bar-h) + 1.25rem); left: var(--sc-gutter); right: var(--sc-gutter);
  max-width: 34rem;
}
.scopes__head .sc-body { font-size: var(--sc-t-sm); }
.plate {
  position: absolute; inset: calc(var(--bar-h) + 10rem) var(--sc-gutter) 1.75rem;
  display: grid; gap: var(--sc-5); align-items: center; align-content: center;
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 900px) {
  .scopes__head { max-width: 30rem; }
  .plate { inset: calc(var(--bar-h) + 2.5rem) var(--sc-gutter) 2.5rem; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1fr); gap: var(--sc-8); padding-top: 8.5rem; padding-left: 0; }
  .plate { padding-left: 0; }
}
.plate__text { order: 2; }
.plate__art { order: 1; margin: 0; justify-self: center; width: 100%; }
@media (min-width: 900px) { .plate__text { order: 1; } .plate__art { order: 2; } }
.plate__name {
  font-family: var(--sc-font-display); font-weight: 500; margin: 0;
  font-size: var(--sc-t-sm); letter-spacing: var(--sc-track-wide); text-transform: uppercase; color: var(--sc-accent);
}
.plate__big {
  font-family: var(--sc-font-display); font-weight: 600; margin: 0; max-width: 16ch; text-wrap: balance;
  font-size: clamp(1.75rem, 1.1rem + 2.6vw, 3.4rem); line-height: 1.04; letter-spacing: var(--sc-track-snug);
}
.plate .sc-body { max-width: 36ch; }
.plate__art img, .plate__art svg { width: 100%; height: auto; border-radius: var(--sc-r-md); }
.plate__art--eyepiece, .plate__art--drawn, .plate__art--rect { max-width: min(30rem, 100%); }
.plate__art--eyepiece img { border-radius: 50%; aspect-ratio: 1; width: min(100%, 26rem, 34svh); margin-inline: auto; }
.plate__art--drawn svg { max-height: 34svh; width: auto; margin-inline: auto; }
.plate__art--rect img { max-height: 34svh; object-fit: cover; width: 100%; }
.plate__art figcaption { margin-top: var(--sc-2); text-align: center; }
.plate__art--word { display: grid; place-items: center; }
.plate__art--word span {
  font-family: var(--sc-font-display); font-weight: 700; font-size: clamp(3.6rem, 2rem + 9vw, 10rem);
  letter-spacing: var(--sc-track-tight); line-height: 1; color: transparent;
  -webkit-text-stroke: 1.5px var(--sc-accent);
}
@media (max-width: 899px) {
  .plate { gap: var(--sc-4); }
  .plate .sc-body { font-size: var(--sc-t-sm); }
  .plate__big { font-size: clamp(1.5rem, 1.1rem + 2.4vw, 2.2rem); }
  .plate__art--word span { font-size: clamp(3rem, 2rem + 9vw, 5.5rem); }
}

/* ------------------------------------------------------------ 8 facts -- */
.facts { padding-top: clamp(3rem, 6vw, 6rem); }
.facts__head { max-width: 46rem; }
.season { margin-top: var(--sc-8); max-width: 46rem; }
.season__bar, .season__months { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 3px; }
.season__bar span {
  height: 0.9rem; border-radius: 2px;
  background: linear-gradient(90deg, transparent var(--from, 0%), var(--sc-accent) var(--from, 0%)),
              repeating-linear-gradient(135deg, var(--sc-hairline-strong) 0 2px, transparent 2px 6px);
  background-size: 100% 100%;
}
.season__bar span { --_o: var(--open, 100%); background:
  linear-gradient(90deg, var(--sc-accent) 0 var(--_o), transparent var(--_o) 100%),
  repeating-linear-gradient(135deg, var(--sc-hairline-strong) 0 2px, transparent 2px 6px); }
.season__bar span[style*="--from"] { background:
  linear-gradient(90deg, transparent 0 var(--from), var(--sc-accent) var(--from) 100%),
  repeating-linear-gradient(135deg, var(--sc-hairline-strong) 0 2px, transparent 2px 6px); }
.season__months span { text-align: center; font-size: var(--sc-t-xs); color: var(--sc-ink-soft); padding-top: var(--sc-2); }
.season__key { margin: var(--sc-4) 0 0; color: var(--sc-ink); max-width: 46ch; }
.facts__list { margin: var(--sc-8) 0 0; max-width: 62rem; border-top: 1px solid var(--red-line); }
.facts__list > div { display: grid; gap: var(--sc-2); padding: var(--sc-5) 0; border-bottom: 1px solid var(--sc-hairline); }
.facts__list dt { font-family: var(--sc-font-display); font-weight: 600; font-size: var(--sc-t-lg); letter-spacing: var(--sc-track-snug); color: var(--sc-ink); }
.facts__list dd { margin: 0; color: var(--sc-ink-soft); max-width: 56ch; }
@media (min-width: 820px) {
  .facts__list > div { grid-template-columns: minmax(10rem, 0.34fr) minmax(0, 1fr); gap: var(--sc-7); }
}

/* ------------------------------------------------------------ 9 book -- */
.book { position: relative; isolation: isolate; overflow: clip; min-height: 100svh; display: flex; flex-direction: column; justify-content: flex-end; padding-top: var(--sc-10); }
.book__ground { position: absolute; inset: 0; z-index: -2; display: block; }
.book__ground img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 50%; max-width: none; }
.book__scrim {
  position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: linear-gradient(180deg, var(--sc-canvas) 0%, color-mix(in oklab, var(--sc-canvas) 40%, transparent) 26%, color-mix(in oklab, var(--sc-canvas) 70%, transparent) 54%, var(--sc-canvas) 92%);
}
.book__inner { padding-bottom: var(--sc-8); max-width: 54rem; margin-inline: 0; padding-left: max(var(--sc-gutter), 4.4rem); }
.book__inner .sc-lede { max-width: 30ch; }
.book__inner .sc-body { max-width: 50ch; color: var(--sc-ink); }
.book__sign { margin: var(--sc-6) 0 0; font-family: var(--sc-font-display); font-weight: 500; font-size: var(--sc-t-lg); }
.book__sign span { display: block; margin-top: var(--sc-2); font-size: var(--sc-t-sm); letter-spacing: var(--sc-track-wide); text-transform: uppercase; color: var(--sc-ink-soft); font-family: var(--sc-font-text); }
.foot {
  display: flex; flex-wrap: wrap; gap: var(--sc-2) var(--sc-7); padding-block: var(--sc-6);
  border-top: 1px solid var(--red-line); font-size: var(--sc-t-sm); color: var(--sc-ink-soft);
  background: var(--sc-canvas); max-width: none;
}
.foot p { margin: 0; }
@media (max-width: 860px) { .book__inner { padding-left: var(--sc-gutter); } }

/* focus: a torch ring */
:focus-visible { outline: 2px solid var(--sc-accent); outline-offset: 3px; }
.cta:focus-visible { outline-color: var(--sc-ink); }
.sc-skip { background: var(--sc-accent); }

@media (prefers-reduced-motion: reduce) {
  .cta, .log a::before { transition: none; }
}

/* no script, print: the engine drops pinned stages into flow, so the HUD and
   the telescope heading must leave their absolute places too */
@media (scripting: none), print {
  :root .hud, :root .scopes__head { position: relative; inset: auto; top: auto; left: auto; right: auto; margin-inline: var(--sc-gutter); max-width: none; }
  :root .plate { position: relative; inset: auto; padding: 0; margin-inline: var(--sc-gutter); margin-top: var(--sc-7); }
  :root .layer { opacity: 0; }
  :root .layer[data-layer="3"] { opacity: 1; }
  :root .dark__stage .sc-copy, :root .twenty__stage .sc-copy { bottom: auto; margin-top: var(--sc-4); }
}