/* ═══════════════════════════════════════════════════════════════════════════
   CHAPTERS — Choose Your Experience
   A standalone full-viewport landing that presents two cinematic "doors":
   Cinematic (deep ink, moving scene) and Basic (warm paper, editorial grid).
═══════════════════════════════════════════════════════════════════════════ */

*,
*::before,
*::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  background: var(--ink-deep, #0a0908);
  color: var(--limestone, #e8e2d6);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  min-height: 100%;
}
body.chooser-body {
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul { list-style: none; }
img { display: block; max-width: 100%; }

/* ── Sky / atmosphere ────────────────────────────────────────────────────── */
.cho-sky {
  position: fixed; inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
.cho-sky-mesh {
  position: absolute; inset: -8%;
  background:
    radial-gradient(ellipse 55% 45% at 22% 30%, rgba(176,141,87,0.22) 0%, transparent 58%),
    radial-gradient(ellipse 60% 50% at 78% 72%, rgba(45,74,62,0.30)  0%, transparent 58%),
    radial-gradient(ellipse 70% 55% at 50% 50%, rgba(196,167,108,0.06) 0%, transparent 70%),
    linear-gradient(135deg, #0c0a08 0%, #0a0806 60%, #08060500 100%);
  animation: choSkyDrift 34s ease-in-out infinite alternate;
  filter: saturate(0.95);
}
@keyframes choSkyDrift {
  0%   { transform: scale(1)    translate3d(0,0,0); }
  100% { transform: scale(1.08) translate3d(1.2%, -0.8%, 0); }
}
.cho-sky-grain {
  position: absolute; inset: 0;
  background-image: repeating-linear-gradient(0deg, rgba(255,255,255,0.02) 0 1px, transparent 1px 3px);
  mix-blend-mode: overlay;
  opacity: 0.55;
}
.cho-sky-vignette {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at center, transparent 40%, rgba(5,4,3,0.8) 100%);
}

/* ── Header ──────────────────────────────────────────────────────────────── */
.cho-header {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 300;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px clamp(28px, 4vw, 56px);
  background: linear-gradient(to bottom, rgba(5,4,3,0.6), transparent);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.cho-mark {
  font-family: var(--font-display);
  font-size: 17px;
  color: var(--warm-white);
  transition: color 0.3s ease;
}
.cho-mark:hover { color: var(--bronze-pale); }
.cho-nav {
  display: flex;
  gap: 32px;
  font-family: var(--font-sc);
  font-size: 9px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
}
.cho-nav a {
  color: rgba(232,226,214,0.55);
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.3s ease, border-color 0.3s ease;
}
.cho-nav a:hover,
.cho-nav a[aria-current="page"] { color: var(--bronze-pale); border-color: rgba(196,167,108,0.4); }
@media (max-width: 700px) { .cho-nav { display: none; } }

/* ══════════════════════════════════════════════════════════════════════════
   MAIN
══════════════════════════════════════════════════════════════════════════ */
.cho {
  position: relative;
  z-index: 10;
  min-height: 100vh;
  padding: clamp(120px, 14vh, 180px) clamp(24px, 5vw, 72px) 60px;
  display: flex;
  flex-direction: column;
  gap: clamp(50px, 7vh, 90px);
}

/* ── Intro band ──────────────────────────────────────────────────────────── */
.cho-intro {
  max-width: 960px;
  margin: 0 auto;
  text-align: center;
  animation: choFadeIn 1.1s var(--ease-out, cubic-bezier(0.16,1,0.3,1)) both;
}
@keyframes choFadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: none; }
}
.cho-eyebrow {
  display: inline-block;
  font-family: var(--font-sc);
  font-size: 10px;
  letter-spacing: 0.48em;
  text-transform: uppercase;
  color: rgba(196,167,108,0.68);
  margin-bottom: 26px;
}
.cho-title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2.4rem, 5.5vw, 4.8rem);
  line-height: 1.02;
  letter-spacing: -0.015em;
  color: var(--warm-white);
  margin-bottom: 22px;
}
.cho-title em {
  font-style: italic;
  color: var(--bronze-pale);
  font-weight: 400;
}
.cho-lede {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(15px, 1.25vw, 18px);
  line-height: 1.7;
  color: rgba(232,226,214,0.72);
  max-width: 62ch;
  margin: 0 auto;
}
.cho-rule {
  display: block;
  width: 42px; height: 1px;
  background: var(--bronze-pale);
  margin: 34px auto 0;
  opacity: 0.6;
}

/* ══════════════════════════════════════════════════════════════════════════
   GATE — two doors with a divider column
══════════════════════════════════════════════════════════════════════════ */
.cho-gate {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: clamp(24px, 3vw, 48px);
  max-width: 1520px;
  margin: 0 auto;
  width: 100%;
  align-items: stretch;
  animation: choFadeIn 1.2s 0.2s var(--ease-out, cubic-bezier(0.16,1,0.3,1)) both;
}
@media (max-width: 960px) {
  .cho-gate { grid-template-columns: 1fr; }
  .cho-divider { display: none; }
}

/* Divider */
.cho-divider {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}
.cho-divider-line {
  flex: 1;
  width: 1px;
  background: linear-gradient(to bottom, transparent, rgba(196,167,108,0.3), transparent);
}
.cho-divider-or {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 20px;
  color: rgba(196,167,108,0.62);
  letter-spacing: 0.02em;
}

/* ── Door base ───────────────────────────────────────────────────────────── */
.cho-door {
  position: relative;
  display: block;
  min-height: clamp(520px, 68vh, 760px);
  overflow: hidden;
  isolation: isolate;
  color: inherit;
  border: 1px solid rgba(196,167,108,0.12);
  transition:
    transform 0.9s var(--ease-out, cubic-bezier(0.16,1,0.3,1)),
    border-color 0.5s ease,
    box-shadow 0.7s ease;
  cursor: pointer;
  padding: clamp(28px, 3.5vw, 50px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.cho-door:hover {
  border-color: rgba(196,167,108,0.4);
  box-shadow: 0 60px 140px -50px rgba(0,0,0,0.8),
              0 0 120px -30px rgba(196,167,108,0.18);
  transform: translateY(-6px);
}
.cho-door.is-picking {
  transform: scale(1.015);
  border-color: var(--bronze-pale);
}
.cho-door.is-picking .cho-door-cta-line { width: 100%; }

/* Number corner */
.cho-door-number {
  position: absolute;
  top: clamp(20px, 2.4vw, 34px);
  right: clamp(20px, 2.4vw, 34px);
  z-index: 3;
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(44px, 4vw, 66px);
  line-height: 1;
  color: var(--bronze-pale);
  letter-spacing: -0.02em;
  opacity: 0.82;
}
.cho-door-number-word {
  position: absolute;
  top: clamp(90px, 8vw, 130px);
  right: clamp(24px, 2.4vw, 38px);
  z-index: 3;
  font-family: var(--font-sc);
  font-size: 9px;
  letter-spacing: 0.38em;
  text-transform: uppercase;
  color: rgba(196,167,108,0.52);
}

/* ── Door scene layer (behind text) ──────────────────────────────────────── */
.cho-door-scene {
  position: absolute; inset: 0;
  z-index: 0;
  overflow: hidden;
  transition: transform 1.6s var(--ease-out, cubic-bezier(0.16,1,0.3,1));
}
.cho-door:hover .cho-door-scene { transform: scale(1.05); }
.cho-door-scene::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(5,4,3,0.35) 0%, rgba(5,4,3,0.72) 75%, rgba(5,4,3,0.92) 100%);
}
.cho-scene-layer { position: absolute; inset: 0; }
.cho-scene-far {
  background:
    radial-gradient(ellipse 70% 50% at 30% 70%, rgba(45,74,62,0.55) 0%, transparent 55%),
    radial-gradient(ellipse 60% 50% at 80% 30%, rgba(176,141,87,0.38) 0%, transparent 58%),
    linear-gradient(160deg, #0e0b08 0%, #151009 100%);
  animation: cinFar 22s ease-in-out infinite alternate;
}
@keyframes cinFar {
  0%   { transform: scale(1)    translate3d(0,0,0); }
  100% { transform: scale(1.12) translate3d(-2%, 1%, 0); }
}
.cho-scene-mid {
  background:
    radial-gradient(circle 280px at 60% 45%, rgba(196,167,108,0.22), transparent 60%),
    radial-gradient(circle 200px at 20% 80%, rgba(45,74,62,0.18), transparent 60%);
  filter: blur(22px);
  animation: cinMid 18s ease-in-out infinite alternate;
}
@keyframes cinMid {
  0%   { transform: translate3d(0,0,0); }
  100% { transform: translate3d(4%, -3%, 0); }
}
.cho-scene-near {
  background:
    radial-gradient(circle 120px at 40% 60%, rgba(196,167,108,0.32), transparent 62%);
  filter: blur(10px);
  opacity: 0.8;
  animation: cinNear 12s ease-in-out infinite alternate;
}
@keyframes cinNear {
  0%   { transform: translate3d(0,0,0); }
  100% { transform: translate3d(-2%, 2%, 0); }
}
.cho-scene-grain {
  position: absolute; inset: 0;
  background-image: repeating-linear-gradient(0deg, rgba(255,255,255,0.02) 0 1px, transparent 1px 3px);
  opacity: 0.6;
  mix-blend-mode: overlay;
}
.cho-scene-grain-light {
  background-image: repeating-linear-gradient(0deg, rgba(30,26,22,0.03) 0 1px, transparent 1px 3px);
  mix-blend-mode: multiply;
  opacity: 0.5;
}

/* ── Basic door — paper/editorial scene ──────────────────────────────────── */
.cho-door--basic {
  color: var(--ink);
}
.cho-door--basic:hover {
  box-shadow: 0 60px 140px -50px rgba(30,26,22,0.4);
}
.cho-scene-paper {
  background:
    radial-gradient(ellipse 90% 60% at 50% 40%, #f2ecdf 0%, transparent 70%),
    linear-gradient(170deg, #f6f2ec 0%, #ede6da 100%);
}
.cho-scene-paper::after {
  background: linear-gradient(180deg,
    rgba(246,242,236,0) 0%,
    rgba(237,230,218,0.3) 60%,
    rgba(216,208,194,0.5) 100%);
}
.cho-paper-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, rgba(30,26,22,0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30,26,22,0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: -1px -1px;
  mask-image: radial-gradient(ellipse at 50% 40%, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 40%, black 30%, transparent 75%);
}
.cho-paper-mark {
  position: absolute;
  top: 40%; left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(9rem, 18vw, 18rem);
  line-height: 0.8;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(176,141,87,0.38);
  letter-spacing: -0.04em;
  user-select: none;
}
.cho-paper-mark span {
  display: inline-block;
  margin-left: -0.18em;
  color: rgba(176,141,87,0.2);
  -webkit-text-stroke: 0;
}

/* ── Door text ───────────────────────────────────────────────────────────── */
.cho-door-text {
  position: relative;
  z-index: 2;
  max-width: 540px;
  margin-top: auto;
  padding-top: 120px;
}
.cho-door-text-light { color: var(--ink); }
.cho-door-label {
  display: inline-block;
  font-family: var(--font-sc);
  font-size: 11px;
  letter-spacing: 0.48em;
  text-transform: uppercase;
  color: var(--bronze-pale);
  padding-bottom: 12px;
  margin-bottom: 22px;
  border-bottom: 1px solid rgba(196,167,108,0.35);
}
.cho-door-text-light .cho-door-label { color: var(--bronze); border-color: rgba(176,141,87,0.35); }
.cho-door-heading {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  line-height: 1.04;
  letter-spacing: -0.01em;
  color: var(--warm-white);
  margin-bottom: 22px;
}
.cho-door-heading em {
  font-style: italic;
  color: var(--bronze-pale);
  font-weight: 400;
}
.cho-door-text-light .cho-door-heading { color: var(--ink); }
.cho-door-text-light .cho-door-heading em { color: var(--bronze); }

.cho-door-desc {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  color: rgba(232,226,214,0.72);
  margin-bottom: 28px;
  max-width: 44ch;
}
.cho-door-text-light .cho-door-desc { color: var(--muted); }

.cho-door-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 36px;
  font-family: var(--font-body);
  font-size: 14px;
  color: rgba(232,226,214,0.84);
}
.cho-door-text-light .cho-door-list { color: var(--ink); }
.cho-door-list li {
  display: flex;
  align-items: center;
  gap: 14px;
}
.cho-tick {
  width: 16px; height: 1px;
  background: var(--bronze-pale);
  display: inline-block;
}
.cho-door-text-light .cho-tick { background: var(--bronze); }

/* CTA */
.cho-door-cta {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 12px 0;
  position: relative;
  font-family: var(--font-sc);
  font-size: 10px;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--bronze-pale);
  transition: color 0.4s ease, gap 0.4s var(--ease-out, cubic-bezier(0.16,1,0.3,1));
}
.cho-door-text-light .cho-door-cta { color: var(--bronze); }
.cho-door-cta-line {
  position: absolute;
  top: 0; left: 0;
  width: 32px; height: 1px;
  background: currentColor;
  transition: width 0.7s var(--ease-out, cubic-bezier(0.16,1,0.3,1));
}
.cho-door:hover .cho-door-cta { gap: 18px; }
.cho-door:hover .cho-door-cta-line { width: 100%; }

/* Mood tag (lower left) */
.cho-door-mood {
  position: absolute;
  bottom: clamp(24px, 2.6vw, 36px);
  left: clamp(28px, 3.5vw, 50px);
  z-index: 2;
  font-family: var(--font-sc);
  font-size: 9px;
  letter-spacing: 0.38em;
  text-transform: uppercase;
  color: rgba(232,226,214,0.45);
}
.cho-door-text-light ~ .cho-door-mood,
.cho-door--basic .cho-door-mood { color: rgba(30,26,22,0.45); }

/* ══════════════════════════════════════════════════════════════════════════
   FOOT note
══════════════════════════════════════════════════════════════════════════ */
.cho-foot {
  max-width: 1520px;
  margin: 0 auto;
  padding: clamp(30px, 4vh, 50px) 0 10px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  border-top: 1px solid rgba(196,167,108,0.08);
  animation: choFadeIn 1.1s 0.5s var(--ease-out, cubic-bezier(0.16,1,0.3,1)) both;
}
@media (max-width: 720px) {
  .cho-foot { grid-template-columns: 1fr; gap: 22px; }
}
.cho-foot-col p {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.6;
  color: rgba(232,226,214,0.64);
  max-width: 32ch;
}
.cho-foot-label {
  display: block;
  font-family: var(--font-sc);
  font-size: 9px;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--bronze-pale);
  margin-bottom: 10px;
}
.cho-foot kbd {
  display: inline-block;
  padding: 2px 8px;
  margin: 0 2px;
  font-family: var(--font-sc);
  font-size: 10px;
  color: var(--bronze-pale);
  background: rgba(196,167,108,0.08);
  border: 1px solid rgba(196,167,108,0.25);
  border-radius: 2px;
  letter-spacing: 0.2em;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .cho-sky-mesh,
  .cho-scene-far,
  .cho-scene-mid,
  .cho-scene-near { animation: none !important; }
  .cho-door:hover { transform: none; }
  .cho-door:hover .cho-door-scene { transform: none; }
}