/* ==========================================================================
   RED UNDER GREEN — the gallery
   Dark, cold, quiet. Museum-label typography, system stacks only, no webfonts.
   Nothing here moves quickly. Everything is a custom property so setPalette()
   can tint the whole room for an ending.
   ========================================================================== */

:root {
  /* -- type ------------------------------------------------------------- */
  --serif: ui-serif, "Iowan Old Style", "Palatino Linotype", Palatino, Georgia,
           "Times New Roman", "Liberation Serif", serif;
  --sans:  ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
           "Helvetica Neue", Arial, "Liberation Sans", sans-serif;

  --label-size: 0.66rem;
  --label-track: 0.24em;
  --prose-size: clamp(1.02rem, 0.94rem + 0.42vw, 1.24rem);
  --prose-lead: 1.72;

  /* -- the room (default: no ending yet, the gallery at 19°C) ------------ */
  --bg:        #0b0c0d;
  --bg-2:      #0e1011;
  --bg-vault:  #060708;   /* the far corners */
  --ink:       #d7d4cb;
  --ink-dim:   #a29d92;
  --ink-faint: #84817a;
  --rule:      #26282a;
  --rule-lit:  #3a3d3f;

  /* the two materials, always available to the page */
  --bole:      #a8402f;
  --bole-lit:  #c25a42;
  --patina:    #7d8a7b;
  --core:      #e6e0d2;

  /* palette-driven accents (setPalette rewrites these three) */
  --accent:      #8a9384;
  --accent-dim:  #5f6b5c;
  --glow:        rgba(138, 147, 132, 0.10);

  --warn:      #b9925a;   /* restrained. amber, not alarm. */

  /* meter hues — the stats are materials, not numbers */
  --m-warmth:    var(--bole-lit);
  --m-stillness: #8f9aa0;
  --m-integrity: #b3ab99;

  /* -- motion ----------------------------------------------------------- */
  --slow:   2400ms;
  --medium: 1100ms;
  --quick:  620ms;
  --ease:   cubic-bezier(0.22, 0.61, 0.36, 1);

  --measure: 34rem;

  color-scheme: dark;
}

/* Ending tints. The whole room changes temperature, slowly. */
:root[data-palette="warm"] {
  --bg: #100c0b; --bg-2: #150f0d; --bg-vault: #0a0706;
  --ink: #e2d8ce; --ink-dim: #b39f92; --ink-faint: #90796d;
  --rule: #33241f; --rule-lit: #4a332b;
  --accent: #c25a42; --accent-dim: #8a3b2c; --glow: rgba(194, 90, 66, 0.13);
}
:root[data-palette="cold"] {
  --bg: #08090b; --bg-2: #0b0d10; --bg-vault: #050608;
  --ink: #ccd0d3; --ink-dim: #909699; --ink-faint: #8a9093;
  --rule: #1e2226; --rule-lit: #2e3439;
  --accent: #7f8d92; --accent-dim: #55605f; --glow: rgba(127, 141, 146, 0.08);
}
:root[data-palette="broken"] {
  --bg: #0a0a09; --bg-2: #0d0d0c; --bg-vault: #060605;
  --ink: #cfcac0; --ink-dim: #99948a; --ink-faint: #87837a;
  --rule: #24231f; --rule-lit: #38352f;
  --accent: #b8b2a4; --accent-dim: #7c7669; --glow: rgba(230, 224, 210, 0.07);
}
:root[data-palette="amber"] {
  --bg: #0e0b06; --bg-2: #120e08; --bg-vault: #080602;
  --ink: #e0d6c2; --ink-dim: #b2a487; --ink-faint: #8f8571;
  --rule: #2b2418; --rule-lit: #40361f;
  --accent: #c9922f; --accent-dim: #8a641f; --glow: rgba(201, 146, 47, 0.11);
}

/* A bright room: lift the ink and open the rules so it survives glare.
   The gallery stays dark — it is night — but it stops being a whisper. */
@media (prefers-color-scheme: light) {
  :root {
    --bg: #16181b; --bg-2: #1b1e21; --bg-vault: #101215;
    --ink: #f2efe8; --ink-dim: #cfcabe; --ink-faint: #9c978c;
    --rule: #3b3f43; --rule-lit: #565b60;
  }
}
@media (prefers-contrast: more) {
  :root {
    --ink: #ffffff; --ink-dim: #ded9cf; --ink-faint: #b3aea3;
    --rule: #5a5f64; --rule-lit: #7c8288;
  }
}

/* ==========================================================================
   reset-ish
   ========================================================================== */

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100svh;
  background: var(--bg);
  background-image:
    radial-gradient(120% 80% at 50% 0%, var(--bg-2) 0%, var(--bg) 46%, var(--bg-vault) 100%);
  color: var(--ink);
  font-family: var(--serif);
  font-size: var(--prose-size);
  line-height: var(--prose-lead);
  transition: background-color var(--slow) var(--ease), color var(--slow) var(--ease);
  overflow-x: hidden;
}

button { font: inherit; color: inherit; background: none; border: 0; margin: 0; }

:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 4px;
}
:focus:not(:focus-visible) { outline: none; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 40;
  background: var(--bg-2); color: var(--ink);
  padding: 0.7rem 1.1rem; border: 1px solid var(--rule-lit);
  font-family: var(--sans); font-size: var(--label-size);
  letter-spacing: var(--label-track); text-transform: uppercase; text-decoration: none;
}
.skip-link:focus { left: 0.6rem; top: 0.6rem; }

.vh {
  position: absolute !important; 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;
}

/* ==========================================================================
   layout
   ========================================================================== */

.app {
  max-width: 78rem;
  margin: 0 auto;
  padding: clamp(1.1rem, 3.4vw, 3.2rem) clamp(1.1rem, 4vw, 3.4rem) 7rem;
  display: grid;
  gap: clamp(1.6rem, 3.6vw, 2.8rem);
  grid-template-columns: 1fr;
  align-items: start;
}

@media (min-width: 62rem) {
  .app {
    grid-template-columns: minmax(17rem, 40%) minmax(0, 1fr);
    column-gap: clamp(2.4rem, 5vw, 5rem);
    padding-bottom: 4rem;
    min-height: 100svh;
    align-content: start;
  }
  .faun   { grid-column: 1; grid-row: 1; }
  .meters { grid-column: 1; grid-row: 2; }
  .stage  { grid-column: 2; grid-row: 1 / span 2; padding-top: 0.4rem; }
}

/* -- the faun -------------------------------------------------------------- */

.faun {
  margin: 0;
  position: relative;
  min-height: 6rem;
  transition: opacity var(--slow) var(--ease);
}
.faun svg {
  display: block;
  width: 100%;
  height: auto;
  max-height: 42svh;
  overflow: visible;
}
@media (min-width: 62rem) {
  .faun svg { max-height: 58svh; }
}
/* a faint pool of light under the object */
.faun::after {
  content: "";
  position: absolute; left: 6%; right: 6%; bottom: -1.2rem; height: 2.4rem;
  background: radial-gradient(60% 100% at 50% 0%, var(--glow), transparent 72%);
  pointer-events: none;
  transition: background var(--slow) var(--ease);
}

/* ==========================================================================
   meters — three hairlines. no numbers, ever.
   ========================================================================== */

.meters {
  display: grid;
  gap: 0.95rem;
  max-width: 26rem;
  padding-top: 0.4rem;
}
.meter { display: block; }
.meter__top {
  display: flex; align-items: baseline; gap: 0.5ch;
  margin-bottom: 0.42rem;
}
.meter__label {
  font-family: var(--sans);
  font-size: var(--label-size);
  letter-spacing: var(--label-track);
  text-transform: uppercase;
  color: var(--ink-faint);
  transition: color var(--medium) var(--ease);
}
.meter__delta {
  font-family: var(--sans);
  font-size: var(--label-size);
  letter-spacing: 0.08em;
  color: var(--ink-dim);
  opacity: 0;
  transform: translateY(0.18em);
  transition: opacity var(--quick) var(--ease), transform var(--quick) var(--ease);
}
.meter__delta.is-up   { color: var(--accent); }
.meter__delta.is-down { color: var(--ink-faint); }
.meter__delta.is-on   { opacity: 1; transform: translateY(0); }

.meter__rail {
  position: relative;
  height: 1px;
  background: var(--rule);
  transition: background-color var(--slow) var(--ease);
}
.meter__fill {
  position: absolute; inset: 0 auto 0 0;
  height: 1px;
  width: 0;
  background: var(--ink-dim);
  transition: width 1800ms var(--ease), background-color var(--slow) var(--ease);
}
.meter--warmth    .meter__fill { background: var(--m-warmth); }
.meter--stillness .meter__fill { background: var(--m-stillness); }
.meter--integrity .meter__fill { background: var(--m-integrity); }

/* the low-integrity rail frays rather than shouts */
.meters[data-frail="1"] .meter--integrity .meter__rail {
  background: repeating-linear-gradient(
    to right, var(--rule) 0 6px, transparent 6px 10px);
}

.meters__foot {
  font-family: var(--sans);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding-top: 0.5rem;
  opacity: 0.8;
}

/* ==========================================================================
   stage: label, prose, choices
   ========================================================================== */

.stage { outline: none; }

.scene-head {
  min-height: 1.2rem;
  margin-bottom: clamp(1.1rem, 2.6vw, 1.9rem);
}
.eyebrow {
  font-family: var(--sans);
  font-size: var(--label-size);
  letter-spacing: var(--label-track);
  text-transform: uppercase;
  color: var(--ink-faint);
  display: flex; flex-wrap: wrap; gap: 0 1.4ch; align-items: baseline;
  margin: 0 0 0.75rem;
}
.eyebrow__sep { color: var(--rule-lit); }

.scene-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.4rem, 1.1rem + 1.5vw, 2.05rem);
  line-height: 1.22;
  letter-spacing: 0.012em;
  margin: 0;
  color: var(--ink);
  transition: color var(--slow) var(--ease);
}
.scene-title--label {
  font-size: clamp(1.7rem, 1.2rem + 2.6vw, 3rem);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-family: var(--sans);
  font-weight: 300;
}

/* -- prose ----------------------------------------------------------------- */

.prose {
  max-width: var(--measure);
  opacity: 0;
  filter: blur(7px);
  transition: opacity 1000ms var(--ease), filter 1400ms var(--ease);
  will-change: opacity, filter;
}
.prose.is-in { opacity: 1; filter: blur(0); }

.prose p { margin: 0 0 1.15em; }
.prose p:last-child { margin-bottom: 0; }
.prose em { font-style: italic; color: var(--ink); }

.prose--coda {
  font-style: italic;
  color: var(--ink-dim);
  border-top: 1px solid var(--rule);
  padding-top: 1.3rem;
  margin-top: 1.8rem;
  max-width: var(--measure);
}
.prose--result { color: var(--ink-dim); }
.prose--interstitial {
  color: var(--ink-faint);
  font-style: italic;
  max-width: 28rem;
}
.prose--label {
  font-family: var(--sans);
  font-size: 0.82rem;
  line-height: 1.9;
  letter-spacing: 0.04em;
  color: var(--ink-dim);
  max-width: 30rem;
}

/* ==========================================================================
   choices
   ========================================================================== */

.choices-wrap { margin-top: clamp(1.8rem, 4vw, 2.9rem); }

.choices {
  list-style: none;
  margin: 0; padding: 0;
  border-top: 1px solid var(--rule);
  max-width: 46rem;
}
.choices > li { border-bottom: 1px solid var(--rule); }

.choice {
  display: grid;
  grid-template-columns: 2.1rem minmax(0, 1fr);
  gap: 0 0.7rem;
  width: 100%;
  text-align: left;
  padding: 1.05rem 0.6rem 1.05rem 0.1rem;
  cursor: pointer;
  color: var(--ink);
  transition: background-color var(--quick) var(--ease),
              color var(--quick) var(--ease),
              padding-left var(--quick) var(--ease);
  opacity: 0;
  animation: choice-in 900ms var(--ease) forwards;
}
@keyframes choice-in { from { opacity: 0; } to { opacity: 1; } }

.choice:hover,
.choice:focus-visible {
  background: linear-gradient(to right, var(--bg-2), transparent 80%);
  padding-left: 0.5rem;
}
.choice[disabled] { cursor: default; opacity: 0.35; }
.choice.is-chosen { opacity: 1; color: var(--accent); }

.choice__num {
  font-family: var(--sans);
  font-size: var(--label-size);
  letter-spacing: 0.1em;
  color: var(--ink-faint);
  padding-top: 0.42em;
  transition: color var(--quick) var(--ease);
}
.choice:hover .choice__num,
.choice:focus-visible .choice__num { color: var(--accent); }

.choice__body {
  display: grid;
  gap: 0.34rem 2rem;
  grid-template-columns: 1fr;
  align-items: baseline;
}
@media (min-width: 48rem) {
  .choice__body {
    grid-template-columns: minmax(11rem, 1fr) minmax(9rem, 1.05fr);
    gap: 0.2rem 2rem;
  }
}

.choice__label {
  font-family: var(--serif);
  font-size: 1.02em;
  line-height: 1.45;
}

/* The hint is REQUIRED READING. It gets its own weight, its own rule, and
   enough contrast to be read before the label is clicked — not a footnote. */
.choice__hint {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.92em;
  line-height: 1.5;
  color: var(--ink-dim);
  border-left: 1px solid var(--rule-lit);
  padding-left: 0.85rem;
  transition: color var(--quick) var(--ease), border-color var(--quick) var(--ease);
}
.choice:hover .choice__hint,
.choice:focus-visible .choice__hint {
  color: var(--ink);
  border-left-color: var(--accent-dim);
}

/* A warned choice. A thin rule and a small mark. This is a museum. */
.choice--warn {
  box-shadow: inset 2px 0 0 -1px var(--warn);
}
.choice--warn .choice__num { color: var(--warn); }
.choice__warn {
  grid-column: 1 / -1;
  display: inline-flex; align-items: center; gap: 0.7ch;
  font-family: var(--sans);
  font-size: 0.58rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--warn);
  margin-top: 0.42rem;
  opacity: 0.92;
}
.choice__warn::before {
  content: "";
  width: 1.9rem; height: 1px;
  background: var(--warn);
  opacity: 0.7;
}

/* -- advance / restart ----------------------------------------------------- */

.advance-row {
  display: flex; align-items: baseline; flex-wrap: wrap;
  gap: 0.9rem 1.6rem;
  margin-top: clamp(1.6rem, 4vw, 2.6rem);
  padding-top: 1.1rem;
  border-top: 1px solid var(--rule);
  max-width: 46rem;
  opacity: 0;
  animation: choice-in 1200ms var(--ease) 260ms forwards;
}
.btn {
  font-family: var(--sans);
  font-size: var(--label-size);
  letter-spacing: var(--label-track);
  text-transform: uppercase;
  color: var(--ink-dim);
  cursor: pointer;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--rule-lit);
  transition: color var(--quick) var(--ease), border-color var(--quick) var(--ease);
}
.btn:hover, .btn:focus-visible { color: var(--ink); border-bottom-color: var(--accent); }
.btn--primary { color: var(--ink); border-bottom-color: var(--accent-dim); }
.btn__key {
  font-size: 0.58rem;
  letter-spacing: 0.16em;
  color: var(--ink-faint);
  font-family: var(--sans);
  text-transform: uppercase;
}

/* ==========================================================================
   endings tally — a row of marks, no spoilers
   ========================================================================== */

.tally { margin-top: clamp(1.8rem, 4vw, 2.6rem); max-width: 46rem; }
.tally__caption {
  font-family: var(--sans);
  font-size: var(--label-size);
  letter-spacing: var(--label-track);
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.65rem;
}
.tally__row { display: flex; gap: 0.85rem; align-items: center; margin: 0; padding: 0; list-style: none; }
.tally__mark {
  width: 0.62rem; height: 0.62rem;
  border: 1px solid var(--rule-lit);
  border-radius: 50%;
  transition: background-color var(--slow) var(--ease), border-color var(--slow) var(--ease);
}
.tally__mark.is-found { background: var(--accent); border-color: var(--accent); }
.tally__mark.is-new   { box-shadow: 0 0 0 3px var(--glow); }

/* ==========================================================================
   chrome: audio toggle
   ========================================================================== */

.chrome {
  position: fixed;
  top: 0; right: 0;
  padding: clamp(0.7rem, 2vw, 1.3rem);
  z-index: 20;
}
.audio-toggle {
  display: inline-flex; align-items: center; gap: 0.7ch;
  font-family: var(--sans);
  font-size: 0.6rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-faint);
  cursor: pointer;
  padding: 0.5rem 0.7rem;
  border: 1px solid transparent;
  transition: color var(--quick) var(--ease), border-color var(--quick) var(--ease);
}
.audio-toggle:hover, .audio-toggle:focus-visible {
  color: var(--ink-dim); border-color: var(--rule);
}
.audio-toggle__mark {
  width: 0.5rem; height: 0.5rem;
  border: 1px solid currentColor;
  border-radius: 50%;
}
.audio-toggle[aria-pressed="true"] { color: var(--ink-dim); }
.audio-toggle[aria-pressed="true"] .audio-toggle__mark {
  background: var(--accent); border-color: var(--accent);
}
.audio-toggle.is-unavailable { opacity: 0.45; }

/* ==========================================================================
   title / ending / error furniture
   ========================================================================== */

.deck {
  max-width: var(--measure);
  color: var(--ink-dim);
  margin: 0 0 1.4rem;
}
.credit {
  font-family: var(--sans);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-top: 2.4rem;
  display: flex; flex-wrap: wrap; gap: 0.4rem 1.6rem;
}
.credit a { color: var(--ink-faint); text-decoration: none; border-bottom: 1px solid var(--rule); }
.credit a:hover, .credit a:focus-visible { color: var(--ink-dim); }

.rule { border: 0; border-top: 1px solid var(--rule); margin: 2rem 0; max-width: 46rem; }

.error-card {
  border-left: 2px solid var(--warn);
  padding: 0.2rem 0 0.2rem 1.2rem;
  max-width: var(--measure);
}
.error-card code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.8em; color: var(--ink-faint);
}

.noscript {
  max-width: 34rem;
  margin: 4rem auto;
  padding: 0 1.4rem;
  color: var(--ink-dim);
}

/* ==========================================================================
   reduced motion — a correct still frame, and nothing sliding
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 220ms !important;
    scroll-behavior: auto !important;
  }
  .prose { filter: none; }
  .prose.is-in { filter: none; }
  .choice { opacity: 1; animation: none; }
  .advance-row { opacity: 1; animation: none; }
  .meter__fill { transition-duration: 220ms !important; }
}