/* styles.css — Temple & Cosmos · Celestial Observatory */

:root {
  --void:    #05060f;
  --void-2:  #0a0d1e;
  --indigo:  #1e2952;
  --indigo-2:#2a3870;
  --violet:  #3d2e6b;
  --gold:    #d4af37;
  --gold-2:  #b8881e;
  --gold-3:  #e9cf73;
  --rose:    #b85c7c;
  --cream:   #f2ecda;
  --mist:    #cdd4e6;
  --mist-2:  rgba(205,212,230,0.62);
  --line:    rgba(212,175,55,0.22);
  --line-2:  rgba(212,175,55,0.12);

  --cormorant: "Cormorant Garamond", Georgia, serif;
  --serif: "Spectral", "Palatino Linotype", Georgia, serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;

  --rail-w: 280px;
}

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

html { scroll-behavior: smooth; }
body {
  background: var(--void);
  color: var(--mist);
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* ── cosmic background ── */
#cosmos {
  position: fixed; inset: 0; width: 100%; height: 100%;
  z-index: 0; display: block; pointer-events: none;
}
#cosmos-tint {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 90% 60% at 50% 8%, rgba(42,56,112,0.42) 0%, transparent 60%),
    radial-gradient(ellipse 80% 70% at 78% 88%, rgba(61,46,107,0.34) 0%, transparent 64%);
}
#vignette {
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
  background: radial-gradient(ellipse 120% 100% at 50% 50%, transparent 56%, rgba(0,0,0,0.55) 100%);
}

.wrap { position: relative; z-index: 2; }

/* shared atoms */
.kicker {
  font-family: var(--mono); font-size: 12px; font-weight: 500;
  letter-spacing: 0.34em; text-transform: uppercase; color: var(--gold);
}
.mono { font-family: var(--mono); }
.rose { color: var(--rose); font-style: italic; }
.gold { color: var(--gold-3); }
em { color: var(--gold-3); font-style: italic; }

.hairline {
  height: 1px; border: 0;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
}

/* ════════════ HERO ════════════ */
.hero {
  min-height: 100vh; position: relative;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: 96px 24px 72px;
}
.hero-top {
  position: absolute; top: 36px; left: 0; right: 0;
  display: flex; justify-content: space-between; align-items: center;
  padding: 0 40px; font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.26em; text-transform: uppercase; color: var(--mist-2);
}
.hero-diagram { margin: 0 auto 6px; }
.hero h1 {
  font-family: var(--cormorant); font-weight: 400;
  font-size: clamp(46px, 8vw, 108px); line-height: 0.95;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--cream);
  margin-top: 14px;
}
.hero h1 .amp { color: var(--gold); font-style: italic; font-weight: 300; }
.hero-sub {
  font-family: var(--mono); font-size: clamp(12px, 1.3vw, 15px);
  letter-spacing: 0.32em; text-transform: uppercase; color: var(--gold);
  margin-top: 26px;
}
.hero-lede {
  font-family: var(--serif); font-style: italic; font-size: clamp(18px, 2vw, 24px);
  color: var(--mist); max-width: 700px; margin: 24px auto 0; line-height: 1.5;
}
.scroll-cue {
  position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.3em;
  text-transform: uppercase; color: var(--mist-2);
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.scroll-cue .ln {
  width: 1px; height: 46px;
  background: linear-gradient(180deg, var(--gold), transparent);
  animation: cuepulse 2.6s ease-in-out infinite;
}
@keyframes cuepulse { 0%,100% { opacity: 0.4; transform: scaleY(0.7); } 50% { opacity: 1; transform: scaleY(1); } }

/* ════════════ CHRONOLOGY RAIL ════════════ */
.rail {
  position: fixed; top: 0; left: 0; width: var(--rail-w); height: 100vh;
  z-index: 6; padding: 30px 28px; display: flex; flex-direction: column;
  pointer-events: none;
  opacity: 0; transition: opacity 0.6s ease;
}
.rail.show { opacity: 1; }
.rail-title {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.28em;
  text-transform: uppercase; color: var(--mist-2); margin-bottom: 22px;
}
.rail-line { position: relative; flex: 1; margin-left: 6px; }
.rail-line::before {
  content: ""; position: absolute; left: 0; top: 4px; bottom: 4px; width: 1px;
  background: linear-gradient(180deg, transparent, var(--line) 12%, var(--line) 88%, transparent);
}
.rail-tick {
  position: relative; padding: 0 0 0 24px; margin-bottom: 26px;
  pointer-events: auto; cursor: pointer;
  font-family: var(--mono); transition: opacity 0.3s;
}
.rail-tick::before {
  content: ""; position: absolute; left: -3.5px; top: 5px;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--void); border: 1px solid var(--gold-2); transition: all 0.3s;
}
.rail-tick.pivot::before { background: var(--gold-3); border-color: var(--gold-3); box-shadow: 0 0 12px rgba(233,207,115,0.7); }
.rail-tick.active::before { background: var(--gold); border-color: var(--gold); box-shadow: 0 0 14px rgba(212,175,55,0.8); }
.rail-tick .yr { font-size: 13px; color: var(--gold-3); letter-spacing: 0.04em; }
.rail-tick.pivot .yr { color: var(--cream); }
.rail-tick .lb { display: block; font-size: 10.5px; line-height: 1.4; color: var(--mist-2); margin-top: 3px; max-width: 200px; }
.rail-tick:hover .lb { color: var(--mist); }

.content { max-width: 980px; margin: 0 auto; padding: 0 40px; }
@media (min-width: 1180px) {
  .content { margin-left: calc(var(--rail-w) + ((100vw - var(--rail-w)) - 980px) / 2); margin-right: auto; }
}

/* ════════════ CHAPTER ════════════ */
.chapter { padding: 130px 0 60px; position: relative; }
.chapter-head { margin-bottom: 16px; }
.chapter-num {
  font-family: var(--cormorant); font-size: clamp(80px, 12vw, 150px); font-weight: 300;
  line-height: 0.8; color: rgba(212,175,55,0.16); font-style: italic; letter-spacing: -0.02em;
}
.chapter-kicker { margin-top: -8px; }
.chapter h2 {
  font-family: var(--cormorant); font-weight: 500; font-size: clamp(40px, 6vw, 78px);
  line-height: 1.02; letter-spacing: 0.01em; color: var(--cream); margin-top: 14px;
}
.chapter-coord {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--gold); margin-top: 18px; display: inline-flex; align-items: center; gap: 12px;
}
.chapter-coord::before { content: ""; width: 28px; height: 1px; background: var(--gold); }

.chapter-lede {
  font-family: var(--serif); font-size: clamp(20px, 2.1vw, 26px); line-height: 1.55;
  color: var(--mist); max-width: 760px; margin: 30px 0 0; font-weight: 300;
}
.chapter-lede em { font-style: italic; }

/* motif diagram block */
.motif {
  margin: 54px 0; display: flex; flex-direction: column; align-items: center; gap: 16px;
}
.motif-note {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--mist-2); text-align: center; max-width: 460px; line-height: 1.6;
}

/* restoration callout */
.restoration {
  margin: 44px 0; padding: 30px 34px; position: relative;
  background: linear-gradient(135deg, rgba(30,41,82,0.34), rgba(20,25,58,0.18));
  border: 1px solid var(--line-2);
}
.restoration .lab {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--rose); margin-bottom: 14px;
}
.restoration .txt { font-family: var(--serif); font-size: clamp(19px, 2vw, 24px); line-height: 1.5; color: var(--cream); font-style: italic; }

/* ── evidence plates ── */
.plates-head {
  display: flex; align-items: baseline; gap: 16px; margin: 56px 0 10px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.24em; text-transform: uppercase; color: var(--mist-2);
}
.plates-head .ct { color: var(--gold); }
.plate {
  position: relative; padding: 28px 32px; margin-top: 18px;
  border: 1px solid var(--line); background: rgba(8,10,24,0.5);
  transition: border-color 0.4s, background 0.4s, transform 0.4s;
}
.plate::before, .plate::after {
  content: ""; position: absolute; width: 10px; height: 10px; border: 1px solid var(--gold); opacity: 0.7;
}
.plate::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.plate::after { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }
.plate:hover { border-color: rgba(212,175,55,0.4); background: rgba(12,15,34,0.62); }
.plate-head {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--mist-2); margin-bottom: 18px; flex-wrap: wrap;
}
.plate-head .stars { color: var(--gold); letter-spacing: 0.12em; }
.plate-q {
  font-family: var(--serif); font-size: clamp(21px, 2.3vw, 28px); line-height: 1.46; color: var(--cream); font-weight: 300;
}
.plate-q em { font-style: italic; color: var(--gold-3); }
.plate-attr {
  margin-top: 18px; font-family: var(--serif); font-style: italic; font-size: 17px; color: var(--mist);
}
.plate-toggle {
  margin-top: 18px; display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--gold); background: none; border: 0; cursor: pointer; padding: 0; transition: color 0.2s;
}
.plate-toggle:hover { color: var(--gold-3); }
.plate-toggle .chev { transition: transform 0.3s; display: inline-block; }
.plate.open .plate-toggle .chev { transform: rotate(90deg); }
.plate-deep {
  display: grid; grid-template-rows: 0fr; transition: grid-template-rows 0.4s ease;
}
.plate.open .plate-deep { grid-template-rows: 1fr; }
.plate-deep > div { overflow: hidden; }
.plate-deep .inner {
  margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--line-2);
  display: grid; grid-template-columns: auto 1fr; gap: 10px 26px;
  font-family: var(--mono); font-size: 12px; line-height: 1.6; color: var(--mist);
}
.plate-deep .k { color: var(--gold); letter-spacing: 0.12em; text-transform: uppercase; font-size: 10.5px; white-space: nowrap; }
.plate-deep .v { color: var(--mist); }

.pivot {
  margin: 50px 0 0; padding-left: 26px; border-left: 2px solid var(--gold);
  font-family: var(--serif); font-style: italic; font-size: clamp(20px, 2.2vw, 28px);
  line-height: 1.5; color: var(--cream); max-width: 740px;
}

/* ════════════ EPILOGUE ════════════ */
.epilogue { padding: 150px 0 140px; text-align: center; }
.epilogue h2 {
  font-family: var(--cormorant); font-weight: 500; font-size: clamp(42px, 6.5vw, 92px);
  line-height: 1.0; color: var(--cream); margin: 18px auto 0; max-width: 1000px; letter-spacing: 0.005em;
}
.epilogue h2 em { color: var(--rose); font-style: italic; }
.epilogue .epi-lede {
  font-family: var(--serif); font-size: clamp(19px, 2vw, 25px); font-style: italic; color: var(--mist);
  max-width: 760px; margin: 34px auto 0; line-height: 1.55;
}
.epi-elements {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 14px;
  max-width: 880px; margin: 50px auto 0;
}
.epi-elements .el {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--gold-3); padding: 9px 18px; border: 1px solid var(--line);
}
.epi-close {
  font-family: var(--serif); font-size: clamp(20px, 2.2vw, 27px); color: var(--cream);
  max-width: 820px; margin: 56px auto 0; line-height: 1.55; font-weight: 300;
}
.epi-sig {
  font-family: var(--cormorant); font-size: clamp(34px, 4vw, 54px); font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--gold); margin-top: 64px;
}
.epi-sig em { color: var(--gold-3); font-style: italic; font-weight: 400; }
.epi-sub {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--mist-2); margin-top: 18px;
}

/* ════════════ NARRATION PLAYER ════════════ */
.player {
  position: fixed; bottom: 22px; right: 22px; z-index: 20;
  display: flex; align-items: center; gap: 14px;
  padding: 12px 16px 12px 13px; background: rgba(8,10,22,0.86);
  border: 1px solid var(--line); backdrop-filter: blur(10px);
  font-family: var(--mono); transition: transform 0.4s ease, opacity 0.4s ease;
}
.player .pbtn {
  width: 38px; height: 38px; border-radius: 50%; border: 1px solid var(--gold);
  background: none; color: var(--gold); cursor: pointer; flex: 0 0 auto;
  display: flex; align-items: center; justify-content: center; transition: background 0.2s, color 0.2s;
}
.player .pbtn:hover { background: var(--gold); color: var(--void); }
.player .pinfo { display: flex; flex-direction: column; gap: 5px; min-width: 150px; }
.player .plab { font-size: 10px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--mist-2); }
.player .pbar { height: 3px; background: rgba(212,175,55,0.2); position: relative; cursor: pointer; }
.player .pfill { position: absolute; left: 0; top: 0; bottom: 0; width: 0; background: var(--gold); }
.player .ptime { font-size: 10px; color: var(--gold); letter-spacing: 0.08em; }

/* ── scroll reveal ── */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity 1s cubic-bezier(.2,.7,.3,1), transform 1s cubic-bezier(.2,.7,.3,1); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 0.08s; }
.reveal.d2 { transition-delay: 0.16s; }
.reveal.d3 { transition-delay: 0.24s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .scroll-cue .ln { animation: none; }
}

/* ── responsive ── */
@media (max-width: 1179px) {
  .rail { display: none; }
  .content { max-width: 760px; padding: 0 32px; }
}
@media (max-width: 640px) {
  body { font-size: 17px; }
  .content { padding: 0 22px; }
  .hero-top { padding: 0 22px; font-size: 9.5px; letter-spacing: 0.18em; }
  .plate { padding: 22px 20px; }
  .player { left: 16px; right: 16px; bottom: 16px; }
  .player .pinfo { flex: 1; min-width: 0; }
  .restoration { padding: 24px 22px; }
}