:root {
  --bg: #07060d;
  --bg-2: #120c24;
  --text: #f4f2ff;
  --muted: #a49fc2;
  --line: rgba(255, 255, 255, 0.10);
  --cyan: #00e5ff;
  --violet: #8b5cff;
  --pink: #ff3da6;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --pad: clamp(16px, 4vw, 48px);
}

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

html, body { height: 100%; }

body {
  min-height: 100svh;
  background:
    radial-gradient(60vmax 60vmax at 70% 40%, rgba(139, 92, 255, 0.22), transparent 60%),
    radial-gradient(50vmax 50vmax at 15% 90%, rgba(0, 229, 255, 0.12), transparent 60%),
    radial-gradient(40vmax 40vmax at 95% 95%, rgba(255, 61, 166, 0.12), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: "Space Grotesk", system-ui, -apple-system, "Segoe UI", sans-serif;
  overflow: hidden;
  display: grid;
  grid-template-rows: auto 1fr auto;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Fondo: palabra gigante, canvas y grano ---------- */
.bigword {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: clamp(80px, 22vw, 380px);
  letter-spacing: -0.06em;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255, 255, 255, 0.07);
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0) 70%);
  -webkit-background-clip: text;
  background-clip: text;
  user-select: none;
  pointer-events: none;
  z-index: 0;
}

#scene {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  display: block;
  cursor: pointer;
  opacity: 0;
  transition: opacity 1.2s var(--ease);
}
#scene.ready { opacity: 1; }

.grain {
  position: fixed;
  inset: -50%;
  z-index: 2;
  pointer-events: none;
  opacity: 0.06;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- Capa de contenido ---------- */
.top, .hero, .foot { position: relative; z-index: 3; }
.hero, .top, .foot { pointer-events: none; }
.top a, .foot button, .status { pointer-events: auto; }

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: var(--pad);
  padding-top: max(var(--pad), env(safe-area-inset-top));
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
}
.brand-mark {
  width: 22px;
  height: 22px;
  border-radius: 7px;
  background: conic-gradient(from 200deg, var(--cyan), var(--violet), var(--pink), var(--cyan));
  box-shadow: 0 0 24px rgba(139, 92, 255, 0.6);
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}
.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ffc531;
  box-shadow: 0 0 0 0 rgba(255, 197, 49, 0.6);
  animation: ping 2s var(--ease) infinite;
}
@keyframes ping {
  0% { box-shadow: 0 0 0 0 rgba(255, 197, 49, 0.55); }
  80%, 100% { box-shadow: 0 0 0 10px rgba(255, 197, 49, 0); }
}

.hero {
  align-self: end;
  padding: 0 var(--pad);
  max-width: 760px;
}

.kicker {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 18px;
}

h1 {
  font-size: clamp(40px, 7.2vw, 92px);
  line-height: 0.98;
  letter-spacing: -0.045em;
  font-weight: 700;
  text-wrap: balance;
}
.grad {
  background: linear-gradient(90deg, var(--cyan), var(--violet) 45%, var(--pink));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lead {
  margin-top: 20px;
  max-width: 46ch;
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.55;
  color: var(--muted);
}

/* ---------- "Registro de obra" ---------- */
.build {
  margin-top: 28px;
  width: min(420px, 100%);
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(10, 8, 22, 0.55);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 13px;
  color: var(--text);
}
.build-row { display: flex; align-items: center; gap: 10px; min-height: 20px; }
.prompt { color: var(--pink); }
#buildText { transition: opacity 0.25s var(--ease), transform 0.25s var(--ease); }
#buildText.swap { opacity: 0; transform: translateY(6px); }
.caret {
  width: 8px;
  height: 15px;
  background: var(--cyan);
  margin-left: -4px;
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.bar {
  position: relative;
  margin-top: 12px;
  height: 3px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}
.bar span {
  position: absolute;
  inset: 0;
  width: 40%;
  border-radius: 3px;
  background: linear-gradient(90deg, transparent, var(--cyan), var(--pink), transparent);
  animation: slide 2.4s var(--ease) infinite;
}
@keyframes slide {
  from { transform: translateX(-100%); }
  to { transform: translateX(260%); }
}

/* ---------- Pie ---------- */
.foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: var(--pad);
  padding-bottom: max(var(--pad), env(safe-area-inset-bottom));
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 12px;
  color: var(--muted);
}
.hint { opacity: 0.8; }
.pause {
  font: inherit;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 12px;
  cursor: pointer;
  transition: color 0.15s var(--ease), border-color 0.15s var(--ease), background 0.15s var(--ease);
}
.pause:hover { color: var(--text); border-color: rgba(255, 255, 255, 0.3); background: rgba(255,255,255,0.05); }
.pause:focus-visible, .brand:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

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

/* ---------- Entrada ---------- */
.js .kicker, .js h1, .js .lead, .js .build {
  opacity: 0;
  transform: translateY(18px);
}
.js.in .kicker, .js.in h1, .js.in .lead, .js.in .build {
  opacity: 1;
  transform: none;
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.js.in h1 { transition-delay: 0.08s; }
.js.in .lead { transition-delay: 0.16s; }
.js.in .build { transition-delay: 0.24s; }

/* ---------- Móvil ---------- */
@media (max-width: 640px) {
  .hint { display: none; }
  .hero { padding-bottom: 8px; }
  .build { margin-top: 22px; }
  .bigword { align-items: start; padding-top: 22vh; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .pause { display: none; }
}