:root {
  --pond: #07142D;
  --shadow: #020713;
  --indigo: #1B2F6B;
  --cyan: #79F2E6;
  --glacial: #D8F4FF;
  --violet: #9B8CFF;
  --mint: #A8F5BE;
  --glass: #EAF7F6;
  --display: 'Noto Sans', system-ui, sans-serif;
  --label: 'Hind', system-ui, sans-serif;
  --body: 'Source Sans 3', system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--shadow);
  color: var(--glacial);
  font-family: var(--body);
  overflow-x: hidden;
  cursor: none;
}

button { font: inherit; cursor: none; }

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 50;
  pointer-events: none;
  opacity: .28;
  background-image:
    radial-gradient(circle at 20% 18%, rgba(121,242,230,.24) 0 1px, transparent 1.7px),
    radial-gradient(circle at 76% 62%, rgba(168,245,190,.18) 0 1px, transparent 1.6px),
    linear-gradient(115deg, transparent, rgba(234,247,246,.05) 45%, transparent 70%);
  background-size: 31px 31px, 43px 43px, 100% 100%;
  mix-blend-mode: screen;
}

.cursor-firefly {
  position: fixed;
  left: 0;
  top: 0;
  width: 86px;
  height: 86px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  z-index: 100;
  pointer-events: none;
  background: radial-gradient(circle, rgba(216,244,255,.76) 0 4px, rgba(121,242,230,.34) 9px, rgba(121,242,230,.13) 28px, transparent 63%);
  filter: drop-shadow(0 0 22px rgba(121,242,230,.8));
  mix-blend-mode: screen;
}

.cursor-firefly span {
  position: absolute;
  inset: 18px;
  border: 1px solid rgba(121,242,230,.48);
  border-radius: 50%;
}

.trail-field span {
  position: fixed;
  z-index: 90;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  pointer-events: none;
  background: var(--cyan);
  box-shadow: 0 0 18px var(--cyan);
  animation: trailFade 1.1s ease-out forwards;
}

.depth-scale {
  position: fixed;
  left: clamp(18px, 3vw, 40px);
  top: 50%;
  transform: translateY(-50%);
  z-index: 60;
  display: grid;
  gap: 18px;
  padding: 22px 11px;
  border-left: 1px solid rgba(234,247,246,.34);
  background: linear-gradient(180deg, rgba(234,247,246,.03), rgba(27,47,107,.18));
  backdrop-filter: blur(12px);
}

.depth-dot {
  width: 86px;
  border: 0;
  border-left: 18px solid rgba(216,244,255,.28);
  background: transparent;
  color: rgba(216,244,255,.62);
  font-family: var(--label);
  text-transform: uppercase;
  letter-spacing: .15em;
  font-size: .68rem;
  text-align: left;
  padding: 4px 0 4px 10px;
  transition: color .35s ease, border-color .35s ease, transform .35s ease;
}

.depth-dot span { display: block; color: var(--cyan); font-weight: 600; }
.depth-dot.active, .depth-dot:hover { color: var(--glacial); border-color: var(--cyan); transform: translateX(8px); }

.tutorial-garden { background: var(--shadow); }

.habitat {
  position: relative;
  min-height: 100vh;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(58px, 8vw, 116px) clamp(34px, 8vw, 132px) clamp(58px, 8vw, 116px) clamp(112px, 14vw, 190px);
  background:
    radial-gradient(circle at var(--mx, 50%) var(--my, 45%), rgba(121,242,230,.1), transparent 22vw),
    radial-gradient(circle at 88% 20%, rgba(155,140,255,.16), transparent 34vw),
    radial-gradient(circle at 28% 90%, rgba(168,245,190,.1), transparent 28vw),
    linear-gradient(160deg, var(--pond), var(--shadow) 72%);
}

.habitat::after {
  content: attr(data-depth);
  position: absolute;
  right: 5vw;
  bottom: -4vw;
  z-index: -1;
  font-family: var(--display);
  font-weight: 900;
  font-size: clamp(10rem, 25vw, 26rem);
  color: rgba(216,244,255,.035);
  letter-spacing: -.08em;
}

.water-gradient {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 65% 42%, rgba(27,47,107,.66), transparent 42%), linear-gradient(180deg, transparent, rgba(2,7,19,.86));
  z-index: -2;
}

.specimen-code {
  position: absolute;
  top: 34px;
  left: clamp(116px, 14vw, 180px);
  font-family: var(--label);
  letter-spacing: .22em;
  text-transform: uppercase;
  color: rgba(216,244,255,.56);
  font-size: .72rem;
}

.wordmark-organisms {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(4px, 1vw, 18px);
  font-family: var(--display);
  font-weight: 900;
  font-size: clamp(4rem, 12vw, 13rem);
  letter-spacing: .08em;
  color: var(--glacial);
  pointer-events: none;
  z-index: 4;
}

.wordmark-organisms span {
  display: inline-grid;
  place-items: center;
  width: .9em;
  height: .9em;
  border-radius: 42% 58% 50% 44% / 54% 41% 59% 46%;
  background: radial-gradient(circle at 35% 28%, rgba(216,244,255,.33), rgba(121,242,230,.12) 45%, rgba(27,47,107,.24));
  border: 1px solid rgba(121,242,230,.34);
  text-shadow: 0 0 26px rgba(121,242,230,.9);
  transform: translate(var(--x), var(--y)) scale(.62) rotate(18deg);
  opacity: .48;
  transition: transform 1.6s cubic-bezier(.18,.84,.14,1), opacity 1.4s ease;
  transition-delay: var(--d);
}

.wordmark-organisms em {
  font-style: normal;
  font-size: .28em;
  align-self: flex-end;
  margin-bottom: .9em;
  opacity: 0;
  color: var(--mint);
  transition: opacity .9s ease 1.2s;
}

body.awakened .wordmark-organisms span { transform: translate(0, 0) scale(1) rotate(0); opacity: 1; }
body.awakened .wordmark-organisms em { opacity: 1; }

.label, .field-label {
  position: absolute;
  color: var(--glacial);
  font-family: var(--label);
  letter-spacing: .11em;
  text-transform: uppercase;
  font-size: .78rem;
}

.label-hero { left: clamp(116px, 14vw, 180px); top: 22vh; }
.label p { margin: 0; }
.label i, .field-label i {
  display: block;
  width: 0;
  height: 1px;
  margin: 0 0 10px;
  background: linear-gradient(90deg, var(--glass), transparent);
  transition: width .8s ease;
}
.label-hero i { max-width: 42vw; }
.awake i, .habitat.active .label-hero i { width: 280px; }

.pond-organism {
  position: absolute;
  right: -8vw;
  top: 6vh;
  width: min(76vw, 960px);
  height: auto;
  filter: drop-shadow(0 0 50px rgba(121,242,230,.2));
  animation: breathe 8s ease-in-out infinite;
}

.blob-skin { fill: url(#blobGlow); stroke: rgba(121,242,230,.45); stroke-width: 2; }
.inner-seam { fill: none; stroke: rgba(121,242,230,.7); stroke-width: 3; stroke-dasharray: 9 18; opacity: .25; transition: opacity .4s ease, stroke-dashoffset .8s ease; }
.dew { fill: var(--mint); filter: drop-shadow(0 0 10px var(--mint)); opacity: .72; }
.proximity.glow .seam, .proximity.glow .inner-seam, .awake .seam { opacity: 1; stroke-dashoffset: -40; }

.pollen span, .seed-ring span {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 16px var(--mint);
}

.constellation span:nth-child(1) { left: 22%; top: 62%; }
.constellation span:nth-child(2) { left: 31%; top: 50%; }
.constellation span:nth-child(3) { left: 42%; top: 68%; }
.constellation span:nth-child(4) { left: 52%; top: 42%; }
.constellation span:nth-child(5) { left: 66%; top: 71%; }
.constellation span:nth-child(6) { left: 78%; top: 54%; }
.constellation span:nth-child(7) { left: 88%; top: 32%; }

.lesson-caption {
  position: relative;
  z-index: 5;
  max-width: 560px;
  padding: 18px 0 18px 28px;
  border-left: 1px solid rgba(234,247,246,.35);
  backdrop-filter: blur(1px);
}

.lesson-caption.right { margin-left: auto; }
.lesson-caption.center { margin: 0 auto; text-align: center; border-left: 0; padding-left: 0; }
.lesson-caption.final { margin-left: auto; margin-right: auto; text-align: center; border-left: 0; padding-left: 0; }
.lesson-caption span {
  font-family: var(--label);
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: .24em;
  font-weight: 600;
}

h1 {
  margin: 10px 0 16px;
  font-family: var(--display);
  font-weight: 900;
  font-size: clamp(3.2rem, 8vw, 8.6rem);
  line-height: .92;
  letter-spacing: .015em;
}

p {
  margin: 0;
  font-size: clamp(1.04rem, 1.35vw, 1.28rem);
  line-height: 1.62;
  color: rgba(216,244,255,.82);
}

.moon-ripple {
  position: absolute;
  inset: 50% auto auto 50%;
  width: 44vw;
  aspect-ratio: 1;
  border: 1px solid rgba(121,242,230,.22);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 0 9vw rgba(121,242,230,.03), 0 0 0 18vw rgba(155,140,255,.025);
  animation: ripple 9s ease-in-out infinite;
}

.jelly-organism, .bloom-organism {
  position: absolute;
  right: 10vw;
  top: 22vh;
  width: min(44vw, 560px);
  aspect-ratio: 1.05;
  border-radius: 56% 44% 48% 52% / 44% 61% 39% 56%;
  background: radial-gradient(circle at 36% 28%, rgba(216,244,255,.22), rgba(121,242,230,.12) 42%, rgba(27,47,107,.48));
  border: 1px solid rgba(121,242,230,.38);
  box-shadow: inset 0 0 60px rgba(121,242,230,.08), 0 0 60px rgba(121,242,230,.13);
  animation: breathe 10s ease-in-out infinite;
}

.jelly-organism .rim, .socket-blob .seam, .island .seam {
  position: absolute;
  inset: 15%;
  border: 2px dashed rgba(121,242,230,.68);
  border-radius: inherit;
  opacity: .25;
}

.notch {
  position: absolute;
  right: -4%;
  top: 42%;
  width: 20%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--shadow);
  border: 1px solid rgba(121,242,230,.34);
}

.magnifier {
  position: absolute;
  left: 18%;
  top: 18%;
  width: 86px;
  height: 86px;
  border: 1px solid rgba(216,244,255,.62);
  border-radius: 50%;
  box-shadow: 0 0 0 12px rgba(234,247,246,.04);
}

.field-label { max-width: 230px; color: rgba(216,244,255,.74); }
.field-label.left { left: 18vw; bottom: 18vh; }
.field-label.bottom { left: 36vw; bottom: 13vh; }
.field-label.right-side { right: 9vw; bottom: 18vh; }
.field-label i { max-width: 190px; }

.island-cluster {
  position: absolute;
  inset: 16vh 8vw 10vh 12vw;
}

.island {
  position: absolute;
  width: clamp(170px, 20vw, 300px);
  aspect-ratio: 1.2;
  border-radius: 60% 40% 54% 46% / 42% 60% 40% 58%;
  background: radial-gradient(circle at 35% 28%, rgba(216,244,255,.2), rgba(121,242,230,.16), rgba(27,47,107,.6));
  border: 1px solid rgba(121,242,230,.36);
  box-shadow: 0 0 46px rgba(121,242,230,.14);
  animation: islandDrift 7s ease-in-out infinite alternate;
}
.island:nth-child(1) { left: 8%; top: 24%; }
.island:nth-child(2) { left: 39%; top: 10%; animation-delay: -2s; }
.island:nth-child(3) { left: 55%; top: 52%; animation-delay: -4s; }
.island.violet { background: radial-gradient(circle at 40% 30%, rgba(216,244,255,.2), rgba(155,140,255,.22), rgba(27,47,107,.6)); }
.island.mint { background: radial-gradient(circle at 40% 30%, rgba(216,244,255,.18), rgba(168,245,190,.18), rgba(27,47,107,.58)); }

.root-map {
  position: absolute;
  left: 18%;
  top: 42%;
  width: 52vw;
  height: 34vh;
  opacity: .45;
  background:
    linear-gradient(25deg, transparent 49%, rgba(168,245,190,.36) 49.5%, transparent 50.4%),
    linear-gradient(-19deg, transparent 49%, rgba(121,242,230,.28) 49.5%, transparent 50.4%),
    linear-gradient(88deg, transparent 49%, rgba(234,247,246,.18) 49.5%, transparent 50.4%);
}

.fit-stage {
  position: absolute;
  inset: 18vh 9vw 10vh 42vw;
}

.socket-blob {
  position: absolute;
  right: 7%;
  top: 12%;
  width: min(38vw, 470px);
  aspect-ratio: 1;
  border-radius: 48% 52% 44% 56% / 55% 42% 58% 45%;
  background: radial-gradient(circle at 32% 28%, rgba(216,244,255,.24), rgba(121,242,230,.13) 48%, rgba(27,47,107,.54));
  border: 1px solid rgba(121,242,230,.38);
}
.socket-blob span {
  position: absolute;
  left: -8%;
  top: 40%;
  width: 23%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--shadow);
  box-shadow: inset 0 0 0 1px rgba(121,242,230,.48), 0 0 24px rgba(121,242,230,.2);
}

.loose-piece {
  position: absolute;
  left: 3%;
  top: 45%;
  width: 132px;
  height: 132px;
  display: grid;
  place-items: center;
  border-radius: 44% 56% 50% 42% / 52% 46% 54% 48%;
  background: radial-gradient(circle at 30% 25%, rgba(216,244,255,.34), rgba(155,140,255,.32), rgba(27,47,107,.62));
  border: 1px solid rgba(155,140,255,.66);
  color: var(--glacial);
  font-family: var(--display);
  font-size: 4rem;
  font-weight: 900;
  transition: transform .4s ease;
}
.loose-piece.magnetized { transform: translate(60px, -18px) rotate(-8deg); }

.bridge-line {
  position: absolute;
  left: 24%;
  top: 56%;
  width: 0;
  height: 1px;
  transform-origin: left center;
  background: linear-gradient(90deg, var(--violet), var(--cyan), transparent);
  box-shadow: 0 0 16px rgba(121,242,230,.65);
  transition: width .45s ease;
}
.bridge-line.show { width: 38%; }

.bloom-organism {
  left: 50%;
  right: auto;
  top: 52%;
  transform: translate(-50%, -38%);
  width: min(48vw, 610px);
}

.flower-core {
  position: absolute;
  inset: 34% 18%;
  display: grid;
  place-items: center;
  font-family: var(--display);
  font-weight: 900;
  letter-spacing: .18em;
  color: var(--glacial);
  text-shadow: 0 0 25px rgba(121,242,230,.8);
}

.seed-ring { position: absolute; inset: -10%; }

.quiet-field { display: grid; place-items: center; }
.final-mark {
  display: flex;
  gap: 1.2vw;
  filter: drop-shadow(0 0 34px rgba(121,242,230,.42));
}
.final-mark span {
  width: clamp(48px, 8vw, 110px);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 50% 44% 58% 42% / 42% 58% 40% 60%;
  border: 1px solid rgba(121,242,230,.45);
  background: radial-gradient(circle at 35% 28%, rgba(216,244,255,.22), rgba(121,242,230,.12), rgba(27,47,107,.55));
  font-family: var(--display);
  font-weight: 900;
  font-size: clamp(1.4rem, 4vw, 4rem);
  color: var(--glacial);
  animation: breathe 7s ease-in-out infinite;
}
.final-mark span:nth-child(even) { animation-delay: -2s; color: var(--mint); }

.constellation-lines {
  position: absolute;
  inset: 28vh 18vw;
  opacity: .3;
  background:
    linear-gradient(14deg, transparent 49.8%, rgba(121,242,230,.32) 50%, transparent 50.2%),
    linear-gradient(-9deg, transparent 49.8%, rgba(168,245,190,.24) 50%, transparent 50.2%);
}

.awake-target { transition: opacity .35s ease, filter .35s ease; }
.awake { filter: drop-shadow(0 0 16px rgba(121,242,230,.38)); }

@keyframes breathe {
  0%, 100% { scale: 1; border-radius: 56% 44% 48% 52% / 44% 61% 39% 56%; }
  50% { scale: 1.035; border-radius: 44% 56% 54% 46% / 57% 43% 56% 44%; }
}

@keyframes ripple {
  0%, 100% { transform: translate(-50%, -50%) scale(.82); opacity: .25; }
  50% { transform: translate(-50%, -50%) scale(1.12); opacity: .5; }
}

@keyframes islandDrift {
  from { transform: translate(0, 0) rotate(-2deg); }
  to { transform: translate(18px, -24px) rotate(3deg); }
}

@keyframes trailFade {
  from { opacity: .75; transform: translate(-50%, -50%) scale(1); }
  to { opacity: 0; transform: translate(-50%, -50%) scale(.15); }
}

@media (max-width: 860px) {
  body { cursor: auto; }
  button { cursor: pointer; }
  .cursor-firefly { display: none; }
  .depth-scale { left: 0; top: auto; right: 0; bottom: 0; transform: none; display: flex; justify-content: space-around; gap: 0; border-left: 0; border-top: 1px solid rgba(234,247,246,.28); padding: 8px; }
  .depth-dot { width: auto; border-left: 0; border-top: 8px solid rgba(216,244,255,.28); padding: 6px; font-size: .55rem; }
  .habitat { padding: 86px 24px 110px; }
  .specimen-code, .label-hero { left: 24px; }
  .pond-organism { width: 120vw; right: -54vw; top: 18vh; opacity: .82; }
  .wordmark-organisms { font-size: clamp(2.7rem, 16vw, 5rem); }
  .jelly-organism, .bloom-organism { width: 86vw; right: -22vw; top: 44vh; }
  .island-cluster, .fit-stage { position: relative; inset: auto; min-height: 58vh; margin-top: 8vh; }
  .lesson-caption.right { margin-left: 0; }
  .socket-blob { width: 72vw; right: -18vw; }
  .field-label { display: none; }
  h1 { font-size: clamp(2.6rem, 15vw, 4.2rem); }
}