/* ==========================================================================
   BASE — materiales, tipografía, cursor, navegación y comportamiento de ramas
   ========================================================================== */

:root {
  --c-0: #060c11;
  --c-1: #0b141e;
  --c-2: #0e1c2a;
  --c-3: #162b40;
  --c-4: #1d3955;
  --c-5: #1b2f70;
  --c-6: #36568c;
  --c-7: #557dc1;
  --c-8: #8ec4e0;
  --c-9: #c0ddec;
  --ink-soft: #7eafc8;
  --glow-green: #99c8bf;
  --glow-teal: #82bcb0;
  --glow-amber: #73c5ee;

  --serif: 'Cormorant Garamond', 'Iowan Old Style', Georgia, serif;
  --fell: 'IM Fell English', 'Cormorant Garamond', Georgia, serif;
  --sans: 'Manrope', system-ui, -apple-system, 'Segoe UI', sans-serif;

  --ease-organic: cubic-bezier(.22, .7, .18, 1);
  --ease-push: cubic-bezier(.7, 0, .25, 1);
  --tone: #060c11;
  --gutter: clamp(16px, 5vw, 96px);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; background: #060c11; }
html.is-locked, html.is-locked body { overflow: hidden; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--tone);
  transition: background-color 1.8s ease;
  color: var(--c-8);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg, canvas { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
input, textarea { font: inherit; color: inherit; }
::selection { background: var(--c-5); color: var(--c-9); }
:focus-visible { outline: 1px dashed var(--c-7); outline-offset: 6px; }
h1, h2, h3 { font-weight: 300; margin: 0; }
.noscript { padding: 40vh 16px; text-align: center; font-family: var(--fell); color: var(--c-7); }

.kicker {
  font-family: var(--fell);
  font-size: .95rem;
  letter-spacing: .32em;
  color: var(--c-6);
}

/* ---------- Capas fijas ---------- */

.particles { position: fixed; inset: 0; z-index: 25; pointer-events: none; }

.grain {
  position: fixed;
  inset: 0;
  z-index: 4;
  pointer-events: none;
  opacity: .08;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .8 0 0 0 0 .75 0 0 0 0 .6 0 0 0 .55 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.lamp {
  position: fixed;
  left: 0; top: 0;
  width: 900px; height: 900px;
  margin: -450px 0 0 -450px;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(142, 196, 224, .075), rgba(142, 196, 224, .025) 55%, transparent);
  pointer-events: none;
  z-index: 3;
  opacity: 0;
  transition: opacity 1.6s ease;
}
html.is-interior .lamp { opacity: 1; }

/* ---------- Ramas ---------- */

.branch {
  animation: sway 9s ease-in-out infinite alternate;
  animation-delay: var(--sway-delay, 0s);
}
@keyframes sway {
  from { rotate: calc(var(--sway, 1deg) * -1); }
  to { rotate: var(--sway, 1deg); }
}
.branch__stroke {
  stroke-dasharray: 1 2;
  stroke-dashoffset: calc(1 - clamp(0, (var(--p, 1) - var(--s, 0)) / var(--d, 1), 1));
}
.branch__leafgrow {
  transform: scale(clamp(0, (var(--p, 1) - var(--s, 0)) / var(--d, 1), 1));
}
.branch__moss { opacity: calc(.8 * clamp(0, (var(--p, 1) - var(--s, 0)) / var(--d, 1), 1)); }

.leaf { transition: fill .8s ease; }
.leaf.is-rustling { animation: rustle .95s cubic-bezier(.3, .7, .3, 1); }
@keyframes rustle {
  0% { rotate: 0deg; }
  22% { rotate: var(--rx, 18deg); }
  52% { rotate: calc(var(--rx, 18deg) * -.45); }
  78% { rotate: calc(var(--rx, 18deg) * .15); }
  100% { rotate: 0deg; }
}

/* ---------- Dosel ---------- */

.canopy {
  position: fixed;
  inset: 0;
  z-index: 20;
  pointer-events: none;
  opacity: 0;
  transition: opacity 2s ease;
}
.canopy.is-on { opacity: 1; }
.canopy svg { width: 100%; height: 100%; overflow: visible; }
.canopy .leaf { pointer-events: visiblePainted; }
.canopy__holder { will-change: transform; }

/* ---------- Cursor ---------- */

html.has-cursor, html.has-cursor * { cursor: none !important; }
.cursor { position: fixed; left: 0; top: 0; z-index: 60; pointer-events: none; transition: opacity .4s; }
.cursor.is-hidden { opacity: 0; }
.cursor__dot, .cursor__ring { position: absolute; left: 0; top: 0; will-change: transform; }
.cursor__dot::before {
  content: '';
  position: absolute;
  width: 4px; height: 4px;
  margin: -2px 0 0 -2px;
  border-radius: 50%;
  background: var(--c-9);
  box-shadow: 0 0 6px rgba(192, 221, 236, .5);
  transition: transform .4s var(--ease-organic), background .4s;
}
.cursor__ring::before {
  content: '';
  position: absolute;
  width: 30px; height: 30px;
  margin: -15px 0 0 -15px;
  border: 1px solid rgba(142, 196, 224, .38);
  border-radius: 50%;
  transition: transform .6s var(--ease-organic), border-radius .6s var(--ease-organic), border-color .5s, opacity .5s;
}
.cursor__label {
  position: absolute;
  left: 0; top: 26px;
  transform: translateX(-50%);
  white-space: nowrap;
  font: 500 9px/1 var(--sans);
  letter-spacing: .32em;
  text-transform: uppercase;
  color: var(--c-7);
  opacity: 0;
  transition: opacity .5s;
}
.cursor.is-object .cursor__label:not(:empty),
.cursor.is-link .cursor__label:not(:empty) { opacity: .9; }
.cursor.is-leaf .cursor__ring::before { transform: scale(.55) rotate(45deg); border-radius: 0 70% 0 70%; border-color: rgba(153, 200, 191, .6); }
.cursor.is-branch .cursor__ring::before { transform: scale(1.3) rotate(20deg); border-radius: 46% 54% 40% 60%; border-color: rgba(85, 125, 193, .55); }
.cursor.is-creature .cursor__ring::before { transform: scale(1.7, .75); border-color: rgba(115, 197, 238, .6); }
.cursor.is-creature .cursor__dot::before { transform: scale(1.8); background: var(--glow-amber); }
.cursor.is-object .cursor__ring::before { transform: scale(2); border-color: rgba(142, 196, 224, .55); }
.cursor.is-link .cursor__ring::before { transform: scale(.55); border-color: rgba(192, 221, 236, .7); }
.cursor.is-link .cursor__dot::before { transform: scale(0); }
.cursor.is-down .cursor__ring::before { transform: scale(.7); }

/* ---------- Navegación ---------- */

.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 30;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: max(18px, env(safe-area-inset-top)) var(--gutter) 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity 1.6s ease 1.2s;
}
.nav.is-on { opacity: 1; }
.nav > *, .nav__right > * { pointer-events: auto; }
.nav__brand {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: .42em;
  text-transform: uppercase;
  color: var(--c-7);
  padding: 8px 0;
  transition: color .4s;
}
.nav__right { display: flex; gap: clamp(14px, 2.6vw, 28px); align-items: center; }
.nav__sound, .nav__map, .intro__sound {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font: 500 10px/1 var(--sans);
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--c-6);
  padding: 8px 0;
  transition: color .4s;
}
.nav__brand:hover, .nav__sound:hover, .nav__map:hover { color: var(--c-9); }
.nav__sigil svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.1; transition: transform 1.2s var(--ease-organic); }
.nav__map:hover .nav__sigil svg { transform: rotate(90deg); }
.nav__where {
  position: fixed;
  left: var(--gutter);
  bottom: max(20px, env(safe-area-inset-bottom));
  display: flex;
  gap: 12px;
  align-items: baseline;
  font-family: var(--fell);
  color: var(--c-6);
  font-size: 14px;
  letter-spacing: .12em;
  transition: opacity .6s;
}
.nav__where b { font-family: var(--serif); font-weight: 400; color: var(--c-7); letter-spacing: .24em; text-transform: uppercase; font-size: 11px; }
html.is-locked .nav__where { opacity: 0; }
html.is-locked .nav { opacity: 0; pointer-events: none; transition-delay: 0s; }
html.is-locked .nav > * { pointer-events: none; }
.nav::before {
  content: '';
  position: fixed;
  inset: 0 0 auto 0;
  height: 110px;
  background: linear-gradient(var(--tone), transparent);
  opacity: .85;
  pointer-events: none;
  z-index: -1;
  transition: background 1.8s;
}

.sound-wave { display: inline-flex; gap: 2px; align-items: flex-end; height: 10px; }
.sound-wave b { width: 1.5px; height: 3px; background: currentColor; transition: height .4s; }
.sound-wave.is-on b { animation: wave 1.1s ease-in-out infinite alternate; }
.sound-wave.is-on b:nth-child(2) { animation-delay: -.4s; }
.sound-wave.is-on b:nth-child(3) { animation-delay: -.8s; }
@keyframes wave { from { height: 2px; } to { height: 10px; } }

@media (max-width: 760px) {
  .nav__map span, .nav__sound span { display: none; }
  .nav__brand { font-size: 11px; letter-spacing: .32em; }
}

/* ---------- Mapa ---------- */

.map { position: fixed; inset: 0; z-index: 32; visibility: hidden; transition: visibility 0s .9s; overflow-y: auto; }
.map.is-open { visibility: visible; transition: none; }
.map__paper {
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse at 50% 40%, rgba(14, 28, 42, .97), rgba(4, 7, 9, .985));
  opacity: 0;
  transition: opacity .9s ease;
}
.map.is-open .map__paper { opacity: 1; }
.map__root {
  position: absolute;
  top: 0;
  left: calc(50% - min(300px, 40vw));
  width: 140px;
  height: 100%;
  min-height: 760px;
  pointer-events: none;
}
.map__world {
  position: relative;
  text-align: center;
  margin: 12vh 0 5vh;
  font-family: var(--fell);
  font-style: italic;
  color: var(--c-6);
  letter-spacing: .2em;
  opacity: 0;
  transition: opacity 1s .2s;
}
.map__list { position: relative; list-style: none; margin: 0 auto; padding: 0; width: min(500px, 84vw); }
.map__list li {
  opacity: 0;
  transform: translateX(-14px);
  transition: opacity .8s calc(.25s + var(--i) * .07s), transform 1s calc(.25s + var(--i) * .07s) var(--ease-organic);
}
.map.is-open .map__list li, .map.is-open .map__world { opacity: 1; transform: none; }
.map__list button {
  display: grid;
  grid-template-columns: 54px 1fr;
  align-items: baseline;
  width: 100%;
  text-align: left;
  padding: 12px 0;
  border-bottom: 1px solid rgba(27, 47, 112, .25);
}
.map__num { font-family: var(--fell); color: var(--c-6); font-size: 15px; }
.map__name { font-family: var(--serif); font-size: clamp(1.5rem, 4vw, 2.1rem); letter-spacing: .1em; text-transform: uppercase; color: var(--c-7); transition: color .4s, letter-spacing .8s var(--ease-organic); }
.map__sub { grid-column: 2; font-family: var(--fell); font-style: italic; font-size: 14px; color: var(--c-5); }
.map__list button:hover .map__name { color: var(--c-9); letter-spacing: .14em; }
.map__list button[aria-current] .map__name { color: var(--c-9); }
.map__list button[aria-current] .map__num::after { content: ' •'; color: var(--glow-green); }
.map__foot { position: relative; display: flex; justify-content: center; gap: 36px; padding: 6vh 0 10vh; opacity: 0; transition: opacity 1s .6s; }
.map.is-open .map__foot { opacity: 1; }
.map__foot button { font: 500 10px/1 var(--sans); letter-spacing: .3em; text-transform: uppercase; color: var(--c-6); padding: 10px 0; border-bottom: 1px solid currentColor; }
.map__foot button:hover { color: var(--c-9); }

/* ---------- Paso entre lugares ---------- */

.passage { position: fixed; inset: 0; z-index: 34; pointer-events: none; }
.passage__side {
  position: absolute;
  top: -6%;
  height: 112%;
  width: 72vw;
  transition: transform .75s var(--ease-push);
}
.passage__side svg { width: 100%; height: 100%; overflow: visible; }
.passage__side--l { left: 0; transform: translateX(-108%); background: linear-gradient(90deg, #030608 55%, rgba(3, 6, 8, 0)); }
.passage__side--r { right: 0; transform: translateX(108%); background: linear-gradient(270deg, #030608 55%, rgba(3, 6, 8, 0)); }
.passage.is-closing .passage__side { transform: translateX(0); }

/* ---------- Susurros ---------- */

.whisper {
  position: fixed;
  left: 50%;
  bottom: max(9vh, 64px);
  z-index: 35;
  display: flex;
  gap: 14px;
  align-items: center;
  max-width: min(560px, calc(100vw - 32px));
  transform: translateX(-50%);
  font-family: var(--fell);
  font-style: italic;
  font-size: clamp(1rem, 2.4vw, 1.2rem);
  color: var(--c-8);
  text-align: center;
  text-shadow: 0 0 18px rgba(0, 0, 0, .9);
  pointer-events: none;
  opacity: 0;
}
.whisper.is-on { animation: whisper 5.6s ease forwards; }
.whisper__mark { font-style: normal; color: var(--glow-amber); font-size: 1.3em; text-shadow: 0 0 12px rgba(115, 197, 238, .6); }
@keyframes whisper {
  0% { opacity: 0; transform: translate(-50%, 10px); }
  16%, 80% { opacity: 1; transform: translate(-50%, 0); }
  100% { opacity: 0; transform: translate(-50%, -6px); }
}

/* ---------- Botón sello ---------- */

.seal-btn {
  position: relative;
  padding: 15px 30px;
  font: 500 11px/1 var(--sans);
  letter-spacing: .34em;
  text-transform: uppercase;
  color: var(--c-9);
  background: linear-gradient(180deg, #0b1537, #070d21);
  border: 1px solid rgba(85, 125, 193, .45);
  transition: border-color .5s, box-shadow .6s, color .5s;
}
.seal-btn::before, .seal-btn::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 5px; height: 5px;
  margin-top: -3px;
  background: var(--c-6);
  transform: rotate(45deg);
}
.seal-btn::before { left: -3px; }
.seal-btn::after { right: -3px; }
.seal-btn:hover { border-color: var(--c-8); box-shadow: 0 0 34px rgba(142, 196, 224, .12); }
.seal-btn.is-done { color: var(--glow-green); border-color: rgba(153, 200, 191, .5); cursor: default; }

/* ---------- Revelados ---------- */

[data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity 1.5s ease, transform 1.6s var(--ease-organic); }
[data-reveal].is-in { opacity: 1; transform: none; }

.is-offscreen *, .is-offscreen *::before, .is-offscreen *::after { animation-play-state: paused !important; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .25s !important;
    scroll-behavior: auto !important;
  }
  .branch { animation: none; }
}