:root {
  --fondo: #0b0b0a;
  --tinta: #efe9dd;
  --tenue: #8a857b;
  --linea: #24221f;
  --acento: #ff4d1f;

  --display: "Bricolage Grotesque", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --margen: clamp(16px, 4vw, 48px);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; background: var(--fondo); }
body {
  margin: 0;
  background: var(--fondo);
  color: var(--tinta);
  font: 400 14px/1.6 var(--mono);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
a { color: inherit; text-decoration: none; }
h1, h2, p { margin: 0; font-weight: 400; }
em { font-style: normal; color: var(--acento); }
::selection { background: var(--acento); color: var(--fondo); }
:focus-visible { outline: 1px solid var(--acento); outline-offset: 4px; }
.oculto { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.acento { color: var(--acento); }

/* Portada: el campo de caracteres ocupa la pantalla; el texto vive en las esquinas */
.portada { position: relative; height: 100vh; height: 100svh; min-height: 520px; overflow: hidden; }
#campo { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: pan-y; }
.esquina {
  position: absolute; z-index: 1;
  font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--tenue);
  pointer-events: none;
}
.esquina a { pointer-events: auto; }
.arriba-izq { top: var(--margen); left: var(--margen); color: var(--tinta); }
.arriba-der { top: var(--margen); right: var(--margen); display: flex; align-items: center; gap: 8px; }
.abajo-izq { bottom: var(--margen); left: var(--margen); }
.abajo-der { bottom: var(--margen); right: var(--margen); display: flex; align-items: center; gap: 18px; font-variant-numeric: tabular-nums; }
.lema {
  text-transform: none; letter-spacing: -0.01em; color: var(--tinta);
  font: 500 clamp(24px, 3vw, 40px)/1.02 var(--display); letter-spacing: -0.03em;
}
.bajar {
  display: grid; place-items: center; width: 40px; height: 40px;
  border: 1px solid var(--linea); border-radius: 50%; color: var(--tinta);
  animation: flotar 2.4s ease-in-out infinite;
}
.bajar:hover { border-color: var(--acento); color: var(--acento); }
@keyframes flotar { 50% { transform: translateY(5px); } }

.pulso {
  display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--acento);
  box-shadow: 0 0 0 0 var(--acento); animation: pulso 2s ease-out infinite;
}
@keyframes pulso { 70% { box-shadow: 0 0 0 7px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } }

@media (max-width: 560px) {
  .arriba-der { font-size: 10px; }
  .abajo-der #reloj { display: none; }
}

/* Experimentos */
.experimentos, .senal { padding: clamp(96px, 16vw, 200px) var(--margen) 0; max-width: 1400px; margin: 0 auto; }
.rotulo { font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--tenue); margin-bottom: 28px; }
.rotulo::before { content: "— "; color: var(--acento); }

.lista { list-style: none; margin: 0; padding: 0; border-bottom: 1px solid var(--linea); }
.fila {
  display: grid; grid-template-columns: 64px minmax(0, 1.1fr) minmax(0, 1.4fr) auto; gap: 24px; align-items: baseline;
  padding: clamp(18px, 2.6vw, 30px) 0; border-top: 1px solid var(--linea);
  position: relative; transition: padding .35s cubic-bezier(.2,.7,.2,1), color .2s;
}
.fila .n { color: var(--tenue); font-size: 12px; }
.fila .nombre { font: 600 clamp(36px, 5.6vw, 80px)/1 var(--display); letter-spacing: -0.045em; }
.fila .desc { color: var(--tenue); }
.fila .estado { font-size: 12px; letter-spacing: .06em; text-transform: uppercase; color: var(--tenue); white-space: nowrap; display: flex; align-items: center; gap: 8px; }
.fila .estado.vivo { color: var(--tinta); }
.flecha { display: inline-block; transition: transform .25s; }
a.fila:hover { padding-left: 16px; }
a.fila:hover .nombre { color: var(--acento); }
a.fila:hover .flecha { transform: translate(3px, -3px); color: var(--acento); }

.tachado {
  display: inline-block; color: transparent; background: var(--tinta); line-height: .78;
  font-family: var(--mono); letter-spacing: 0; user-select: none;
  transition: background .15s;
}
.nombre .tachado { font-size: .52em; vertical-align: middle; }
.cerrada .nombre .tachado { opacity: .9; }
.desc .tachado { background: var(--linea); }
.tachado.revuelto { background: transparent; color: var(--acento); }
.cerrada { cursor: not-allowed; }

@media (max-width: 760px) {
  .fila { grid-template-columns: 40px minmax(0, 1fr) auto; row-gap: 6px; }
  .fila .desc { grid-column: 2 / -1; grid-row: 2; }
}

/* Señal */
.senal h2 { font: 600 clamp(42px, 7.6vw, 120px)/0.92 var(--display); letter-spacing: -0.05em; }
.susurro { margin-top: 28px; color: var(--tenue); }
.form { margin-top: clamp(40px, 6vw, 72px); max-width: 880px; }
.form textarea, .form input {
  width: 100%; background: transparent; color: var(--tinta); border: 0; border-bottom: 1px solid var(--linea);
  border-radius: 0; outline: none; font: 400 clamp(20px, 2.2vw, 28px)/1.3 var(--display); letter-spacing: -0.02em;
  padding: 10px 0 14px; transition: border-color .2s;
}
.form textarea { resize: none; min-height: 3.2em; }
.form textarea::placeholder, .form input::placeholder { color: #4a4740; }
.form textarea:focus, .form input:focus { border-color: var(--acento); }
.form [aria-invalid="true"] { border-color: var(--acento); }
.form-fila { display: flex; gap: 20px; align-items: flex-end; margin-top: 18px; }
.form-fila input { flex: 1; min-width: 0; }
.form button {
  flex: none; cursor: pointer; border: 1px solid var(--tinta); background: transparent; color: var(--tinta);
  font: 500 13px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase;
  padding: 16px 22px; border-radius: 999px; transition: background .2s, color .2s, border-color .2s;
}
.form button:hover { background: var(--acento); border-color: var(--acento); color: var(--fondo); }
.form button[disabled] { opacity: .5; cursor: progress; }
.trampa { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.aviso { margin-top: 18px; min-height: 1.6em; color: var(--tenue); }
.aviso.error { color: var(--acento); }
.aviso a { text-decoration: underline; }
.recibida { margin-top: clamp(40px, 6vw, 72px); font: 600 clamp(30px, 3.8vw, 52px)/1.02 var(--display); letter-spacing: -0.04em; }
@media (max-width: 560px) {
  .form-fila { flex-direction: column; align-items: stretch; }
}

.pie {
  margin-top: clamp(120px, 18vw, 240px);
  padding: 24px var(--margen) calc(28px + env(safe-area-inset-bottom));
  display: flex; justify-content: space-between; gap: 16px;
  border-top: 1px solid var(--linea); color: var(--tenue); font-size: 12px; letter-spacing: .06em; text-transform: uppercase;
}
.pie a:hover { color: var(--acento); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .bajar, .pulso { animation: none; }
}