/* Design font tokens: IBM Plex Sans** / San* and Space Mono** / Mono* */
:root {
  --peat: #14110D;
  --moss: #456B3F;
  --clay: #A35C2F;
  --ochre: #E6B95C;
  --aurora: #65F2A4;
  --violet: #8D5CFF;
  --dusk: #172A4A;
  --bone: #F4E7CF;
  --sidebar: clamp(118px, 15vw, 184px);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--peat);
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  color: var(--bone);
  font-family: "IBM Plex Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 18% 9%, rgba(101, 242, 164, .18), transparent 28rem),
    radial-gradient(circle at 88% 6%, rgba(141, 92, 255, .28), transparent 34rem),
    linear-gradient(135deg, #14110D 0%, #172A4A 38%, #456B3F 62%, #65F2A4 82%, #8D5CFF 100%);
}

a { color: inherit; text-decoration: none; }

.peat-grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 8;
  opacity: .28;
  mix-blend-mode: soft-light;
  background-image:
    radial-gradient(circle, rgba(244, 231, 207, .55) 0 1px, transparent 1.8px),
    radial-gradient(circle, rgba(20, 17, 13, .8) 0 1px, transparent 2px);
  background-size: 19px 23px, 31px 37px;
}

.trail-marker {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--sidebar);
  z-index: 20;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.3rem;
  padding: 1rem .65rem;
  color: var(--bone);
  background:
    linear-gradient(90deg, rgba(20, 17, 13, .98), rgba(69, 107, 63, .76)),
    repeating-linear-gradient(112deg, rgba(230, 185, 92, .15) 0 1px, transparent 1px 13px);
  border-right: 2px solid rgba(230, 185, 92, .55);
  box-shadow: inset -13px 0 28px rgba(20,17,13,.8), 16px 0 60px rgba(20,17,13,.46);
}

.trail-marker::before,
.trail-marker::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(244, 231, 207, .23);
  border-radius: 999px;
  pointer-events: none;
}

.trail-marker::before { inset: .6rem .75rem; }
.trail-marker::after { top: 18%; width: 78%; height: 52%; transform: rotate(-8deg); }

.domain-kinetic {
  min-height: 210px;
  width: 100%;
  display: grid;
  place-items: center;
  position: relative;
  margin-top: .35rem;
}

.sprout-word {
  display: flex;
  flex-direction: column;
  gap: -.2rem;
  font-family: "Bricolage Grotesque", "Arial Black", system-ui, sans-serif;
  font-size: clamp(1.28rem, 2vw, 1.95rem);
  font-weight: 800;
  letter-spacing: .03em;
  line-height: .83;
  color: var(--ochre);
  filter: drop-shadow(0 0 12px rgba(230,185,92,.34));
}

.sprout-word span {
  display: inline-block;
  transform: translateY(42px) scaleY(.18);
  opacity: 0;
  animation: sprout 1s cubic-bezier(.2,.9,.12,1.25) forwards, bob 4s ease-in-out infinite;
  animation-delay: calc(var(--i, 0) * .09s), calc(.95s + var(--i, 0) * .07s);
}

.spark-coordinates {
  position: absolute;
  right: .45rem;
  bottom: .25rem;
  display: flex;
  flex-direction: column;
  gap: .15rem;
  font-family: "Space Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  color: var(--aurora);
  text-shadow: 0 0 16px var(--aurora);
}

.spark-coordinates span,
.spark-coordinates b {
  display: block;
  opacity: 0;
  transform: translate(28px, -18px) scale(.2);
  animation: sparkSettle .8s ease forwards;
}

.season-dial {
  width: clamp(62px, 7vw, 92px);
  aspect-ratio: 1;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: conic-gradient(from var(--dial, 0deg), #E6B95C, #65F2A4, #8D5CFF, #172A4A, #A35C2F, #E6B95C);
  box-shadow: 0 0 0 6px rgba(20,17,13,.72), 0 0 26px rgba(101,242,164,.28);
  animation: dialRotate 14s linear infinite;
}

.season-dial span { width: 58%; aspect-ratio: 1; border-radius: 50%; background: var(--peat); border: 1px dashed rgba(244,231,207,.58); }
.season-dial i { position: absolute; width: 2px; height: 42px; background: var(--bone); transform: translateY(-20px) rotate(21deg); transform-origin: bottom; }

.coordinate-nav {
  display: flex;
  flex-direction: column;
  gap: .55rem;
  width: 100%;
  z-index: 1;
}

.coordinate-nav a {
  display: grid;
  grid-template-columns: 26px 1fr;
  align-items: center;
  gap: .35rem;
  padding: .38rem .28rem;
  border: 1px solid rgba(244,231,207,.16);
  border-radius: 999px 12px 999px 14px;
  background: rgba(20,17,13,.34);
  font: .68rem/1 "Space Mono", monospace;
  transition: transform .3s ease, background .3s ease, color .3s ease;
}

.coordinate-nav a.active,
.coordinate-nav a:hover {
  color: var(--peat);
  background: linear-gradient(135deg, var(--ochre), var(--aurora));
  transform: translateX(.25rem) rotate(-1deg);
}

.coordinate-nav svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.sidebar-glyphs {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .35rem;
  font-family: "Space Mono", monospace;
  font-size: .62rem;
  letter-spacing: .12em;
  writing-mode: vertical-rl;
  color: rgba(244,231,207,.72);
}

.sidebar-glyphs em { color: var(--ochre); font-style: normal; }

.story-stage {
  position: relative;
  margin-left: var(--sidebar);
  min-height: 500vh;
  background:
    radial-gradient(circle at 8% 8%, rgba(230,185,92,.16), transparent 24rem),
    linear-gradient(180deg, rgba(20,17,13,.95), rgba(23,42,74,.92) 22%, rgba(69,107,63,.88) 56%, rgba(20,17,13,.9));
}

.flow-system {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  overflow: visible;
  pointer-events: none;
}

.flow-root {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  animation: drawRoot 7s ease forwards;
}

.flow-root.primary { stroke: rgba(101,242,164,.8); stroke-width: 9; filter: drop-shadow(0 0 16px rgba(101,242,164,.36)); }
.flow-root.aurora { stroke: rgba(141,92,255,.64); stroke-width: 5; animation-delay: .8s; }
.flow-root.clayline { stroke: rgba(230,185,92,.76); stroke-width: 4; animation-delay: 1.25s; }
.flow-root.canopyline { stroke: rgba(244,231,207,.58); stroke-width: 3; animation-delay: 1.7s; }

.chapter {
  min-height: 100vh;
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(1rem, .8fr) minmax(280px, 740px) minmax(220px, .9fr);
  align-items: center;
  padding: clamp(2rem, 5vw, 5rem);
  isolation: isolate;
}

.chapter::before {
  content: attr(data-chapter);
  position: absolute;
  right: 3vw;
  top: 7vh;
  font: 800 clamp(3rem, 11vw, 10rem)/.8 "Bricolage Grotesque", sans-serif;
  letter-spacing: -.07em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(244,231,207,.09);
  z-index: -1;
}

.root-chapter { background: radial-gradient(circle at 75% 22%, rgba(101,242,164,.18), transparent 30rem); }
.clay-chapter { background: radial-gradient(circle at 24% 40%, rgba(163,92,47,.42), transparent 35rem); }
.river-chapter { background: linear-gradient(160deg, rgba(23,42,74,.48), rgba(20,17,13,.18)), radial-gradient(circle at 70% 45%, rgba(101,242,164,.2), transparent 32rem); }
.canopy-chapter { background: radial-gradient(circle at 68% 16%, rgba(69,107,63,.72), transparent 37rem); }
.aurora-chapter { background: radial-gradient(circle at 68% 8%, rgba(141,92,255,.54), transparent 40rem), radial-gradient(circle at 40% 30%, rgba(101,242,164,.26), transparent 28rem); }

.chapter-copy {
  grid-column: 2;
  position: relative;
  z-index: 4;
  max-width: 720px;
  padding: clamp(1.2rem, 3vw, 2.4rem);
  border: 1px solid rgba(230,185,92,.28);
  border-radius: 42px 20px 56px 24px;
  background:
    linear-gradient(135deg, rgba(20,17,13,.72), rgba(23,42,74,.52)),
    repeating-linear-gradient(9deg, rgba(244,231,207,.06) 0 1px, transparent 1px 16px);
  box-shadow: 0 28px 90px rgba(0,0,0,.32), inset 0 0 45px rgba(230,185,92,.05);
  backdrop-filter: blur(4px);
}

.diagonal-copy { transform: rotate(-2deg) translateX(-3vw); }
.river-copy { transform: rotate(1deg); }
.canopy-copy { transform: rotate(-1.5deg) translateX(4vw); }
.archive-copy { border-color: rgba(101,242,164,.45); background: rgba(20,17,13,.64); }

.eyebrow {
  margin: 0 0 .9rem;
  color: var(--ochre);
  font: .75rem/1.5 "Space Mono", monospace;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.kinetic-title,
.chapter-title {
  margin: 0;
  font-family: "Fraunces", Georgia, serif;
  font-weight: 900;
  font-size: clamp(4rem, 10.5vw, 11.5rem);
  line-height: .78;
  letter-spacing: -.07em;
  color: var(--bone);
  text-wrap: balance;
}

.kinetic-title span,
.chapter-title span {
  display: block;
  width: max-content;
  max-width: 100%;
  animation: titleSway 6s ease-in-out infinite alternate;
  background: linear-gradient(115deg, #F4E7CF, #E6B95C 34%, #65F2A4 66%, #8D5CFF);
  background-size: 220% 100%;
  -webkit-background-clip: text;
  color: transparent;
}

.chapter-title { background: linear-gradient(125deg, var(--bone), var(--ochre), var(--aurora)); -webkit-background-clip: text; color: transparent; }
.chapter-title::first-letter { color: var(--ochre); }
.chapter-copy p:not(.eyebrow) { font-size: clamp(1.05rem, 1.45vw, 1.45rem); line-height: 1.72; max-width: 58ch; }

.vector-field { position: absolute; z-index: 3; right: 8vw; top: 14vh; width: min(34vw, 420px); }
.root-orb path:first-child { fill: rgba(69,107,63,.62); stroke: var(--ochre); stroke-width: 2; }
.root-orb path:last-child { fill: none; stroke: var(--aurora); stroke-width: 4; stroke-linecap: round; animation: pulseStroke 2.5s ease-in-out infinite; }

.contour,
.pressed-leaf {
  position: absolute;
  z-index: 0;
  pointer-events: none;
}

.contour-a {
  right: -8vw;
  bottom: 8vh;
  width: 42vw;
  aspect-ratio: 1;
  border-radius: 44% 56% 52% 48%;
  background: repeating-radial-gradient(ellipse at center, transparent 0 18px, rgba(230,185,92,.18) 19px 21px, transparent 22px 38px);
  animation: contourPulse 7s ease-in-out infinite;
}

.pressed-leaf {
  left: 8vw;
  top: 18vh;
  width: 18vw;
  height: 34vw;
  border-radius: 80% 0 80% 0;
  transform: rotate(26deg);
  background: linear-gradient(145deg, rgba(244,231,207,.14), rgba(69,107,63,.38));
  box-shadow: inset 0 0 0 2px rgba(230,185,92,.2);
}

.pressed-leaf::after { content: ""; position: absolute; inset: 8%; border-left: 2px solid rgba(244,231,207,.3); transform: rotate(31deg); }

.clay-tablet {
  position: absolute;
  right: 7vw;
  top: 15vh;
  z-index: 4;
  width: min(25vw, 330px);
  padding: 1.3rem;
  color: var(--peat);
  border-radius: 20px 44px 18px 36px;
  background: linear-gradient(135deg, #F4E7CF, #E6B95C 58%, #A35C2F);
  box-shadow: 0 18px 60px rgba(20,17,13,.45);
  transform: rotate(5deg);
}
.clay-tablet span, .clay-tablet small { font-family: "Space Mono", monospace; }
.clay-tablet p { font-family: "Fraunces", serif; font-weight: 900; font-size: 1.55rem; line-height: 1; }

.river-runes {
  position: absolute;
  left: 8vw;
  bottom: 13vh;
  z-index: 4;
  display: flex;
  gap: clamp(.8rem, 2vw, 1.8rem);
  font: 800 clamp(2.2rem, 7vw, 7rem)/1 "Bricolage Grotesque", sans-serif;
  color: var(--aurora);
  text-shadow: 0 0 18px rgba(101,242,164,.55);
}
.river-runes span { animation: runeFloat 3.8s ease-in-out infinite; animation-delay: calc(var(--i, 0) * .22s); }

.moon-stack {
  position: absolute;
  right: 9vw;
  top: 16vh;
  z-index: 3;
  display: grid;
  gap: 1rem;
}
.moon-stack i { width: 62px; aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle at 32% 34%, var(--bone) 0 32%, rgba(244,231,207,.15) 33% 100%); box-shadow: 0 0 25px rgba(244,231,207,.28); }
.moon-stack i:nth-child(2) { transform: translateX(35px); background: radial-gradient(circle at 65% 50%, var(--peat) 0 36%, var(--bone) 37%); }
.moon-stack i:nth-child(3) { transform: translateX(-18px); background: var(--ochre); }
.moon-stack i:nth-child(4) { transform: translateX(20px); background: radial-gradient(circle at 35% 50%, var(--peat) 0 38%, var(--aurora) 39%); }

.aurora-ribbons { position: absolute; inset: 5vh 0 auto; height: 42vh; overflow: hidden; z-index: 0; }
.aurora-ribbons span { position: absolute; left: -8%; width: 120%; height: 42%; border-radius: 50%; filter: blur(12px); opacity: .72; transform-origin: center; animation: ribbonDrift 8s ease-in-out infinite alternate; }
.aurora-ribbons span:nth-child(1) { top: 4%; background: linear-gradient(90deg, transparent, #65F2A4, transparent, #8D5CFF, transparent); }
.aurora-ribbons span:nth-child(2) { top: 22%; background: linear-gradient(90deg, transparent, #E6B95C, transparent, #65F2A4, transparent); animation-delay: -2s; }
.aurora-ribbons span:nth-child(3) { top: 38%; background: linear-gradient(90deg, transparent, #8D5CFF, transparent, #F4E7CF, transparent); animation-delay: -4s; }

.closing-mark {
  position: absolute;
  right: 5vw;
  bottom: 6vh;
  font: 800 clamp(2rem, 6vw, 6rem)/1 "Bricolage Grotesque", sans-serif;
  color: rgba(244,231,207,.14);
  transform: rotate(-5deg);
}

.specimen-card {
  position: absolute;
  z-index: 6;
  width: clamp(190px, 20vw, 280px);
  aspect-ratio: .82;
  perspective: 1000px;
  cursor: pointer;
  outline: none;
}
.card-root { right: 15vw; bottom: 14vh; transform: rotate(8deg); }
.card-clay { left: 12vw; bottom: 10vh; transform: rotate(-7deg); }
.card-river { right: 11vw; top: 18vh; transform: rotate(4deg); }
.card-canopy { left: 10vw; bottom: 16vh; transform: rotate(6deg); }
.card-aurora { right: 13vw; top: 31vh; transform: rotate(-4deg); }

.card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform .75s cubic-bezier(.2,.8,.2,1);
  transform-style: preserve-3d;
}
.specimen-card:hover .card-inner,
.specimen-card.flipped .card-inner,
.specimen-card:focus .card-inner { transform: rotateY(180deg) rotateZ(-1deg); }

.card-face {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .8rem;
  padding: 1.1rem;
  backface-visibility: hidden;
  border: 2px solid rgba(230,185,92,.55);
  border-radius: 32px 18px 42px 20px;
  text-align: center;
  box-shadow: 0 22px 56px rgba(0,0,0,.42), inset 0 0 0 7px rgba(20,17,13,.08);
}
.card-face.front { background: linear-gradient(150deg, rgba(244,231,207,.94), rgba(230,185,92,.9) 52%, rgba(163,92,47,.92)); color: var(--peat); }
.card-face.back { transform: rotateY(180deg); background: linear-gradient(145deg, rgba(20,17,13,.96), rgba(69,107,63,.9)); color: var(--bone); }
.card-face b { font: 800 1.4rem/1 "Bricolage Grotesque", sans-serif; text-transform: uppercase; letter-spacing: -.02em; }
.card-face p { margin: 0; line-height: 1.45; }
.specimen-id { font: .72rem/1 "Space Mono", monospace; letter-spacing: .14em; color: var(--clay); }
.card-face svg { width: 47%; max-height: 105px; fill: none; stroke: currentColor; stroke-width: 4; stroke-linecap: round; stroke-linejoin: round; }
.card-face.back .specimen-id { color: var(--aurora); }

.is-visible .chapter-copy { animation: panelArrive .9s ease both; }

@keyframes sprout { to { opacity: 1; transform: translateY(0) scaleY(1); } }
@keyframes bob { 0%, 100% { translate: 0 0; color: var(--ochre); } 50% { translate: 0 -5px; color: var(--aurora); } }
@keyframes sparkSettle { 70% { opacity: 1; transform: translate(-4px, 2px) scale(1.35); } 100% { opacity: 1; transform: translate(0,0) scale(1); } }
@keyframes dialRotate { to { transform: rotate(360deg); } }
@keyframes drawRoot { to { stroke-dashoffset: 0; } }
@keyframes titleSway { 0% { transform: translateX(0) skewX(-2deg); background-position: 0 50%; letter-spacing: -.075em; } 100% { transform: translateX(1.4vw) skewX(3deg); background-position: 100% 50%; letter-spacing: -.03em; } }
@keyframes pulseStroke { 50% { stroke-width: 6; filter: drop-shadow(0 0 18px rgba(101,242,164,.7)); } }
@keyframes contourPulse { 50% { transform: rotate(7deg) scale(1.06); opacity: .72; } }
@keyframes runeFloat { 50% { transform: translateY(-18px) rotate(5deg); color: var(--violet); } }
@keyframes ribbonDrift { from { transform: translateX(-4%) rotate(-3deg) scaleY(.75); } to { transform: translateX(4%) rotate(4deg) scaleY(1.25); } }
@keyframes panelArrive { from { opacity: .2; transform: translateY(34px) rotate(var(--tilt, 0deg)); } to { opacity: 1; } }

@media (max-width: 820px) {
  :root { --sidebar: 84px; }
  .coordinate-nav a { grid-template-columns: 1fr; justify-items: center; }
  .coordinate-nav span, .sidebar-glyphs { display: none; }
  .sprout-word { font-size: 1.08rem; }
  .spark-coordinates { right: .1rem; }
  .chapter { grid-template-columns: 1fr; padding: 6rem 1.1rem; }
  .chapter-copy { grid-column: 1; }
  .kinetic-title, .chapter-title { font-size: clamp(3.1rem, 17vw, 6rem); }
  .specimen-card { position: relative; inset: auto; margin: 2rem 0 0 auto; width: min(64vw, 250px); }
  .clay-tablet, .vector-field, .moon-stack { display: none; }
}