:root {
  --carbon: #14171a;
  --panel: #1e2328;
  --linea: #2e353c;
  --tinta: #f0efeb;
  --tenue: #8b959c;
  --ambar: #f2a20c;
  --verde: #3fbf87;
  --rojo: #e05a5a;

  --display: "Space Grotesk", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

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

body {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--carbon);
  color: var(--tinta);
  font-family: var(--display);
  -webkit-font-smoothing: antialiased;
}

.terminal {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(280px, 380px) 1fr;
  gap: 1px;
  background: var(--linea);
}

/* ── Lector ─────────────────────────────────────── */
.lector {
  background: var(--panel);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  padding: 3rem 2rem;
}

.antena {
  position: relative;
  width: 180px;
  height: 180px;
  display: grid;
  place-items: center;
  color: var(--tenue);
  transition: color 0.3s;
}

.glifo { width: 76px; position: relative; z-index: 1; }

.onda {
  position: absolute;
  inset: 0;
  border: 1px solid currentColor;
  border-radius: 50%;
  opacity: 0;
  animation: pulso 2.6s ease-out infinite;
}
.onda--2 { animation-delay: 0.85s; }
.onda--3 { animation-delay: 1.7s; }

@keyframes pulso {
  0%   { transform: scale(0.45); opacity: 0; }
  25%  { opacity: 0.5; }
  100% { transform: scale(1); opacity: 0; }
}

/* Al leer, las ondas se congelan y el anillo se cierra */
body[data-estado="leido"] .antena,
body[data-estado="denegado"] .antena { color: var(--tinta); }
body[data-estado="leido"] .onda,
body[data-estado="denegado"] .onda {
  animation: none;
  opacity: 0.28;
  transform: scale(1);
}
body[data-estado="leido"] .antena { color: var(--verde); }
body[data-estado="denegado"] .antena { color: var(--rojo); }
body[data-estado="escribiendo"] .antena { color: var(--ambar); }

.lector__instruccion {
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--tenue);
  transition: color 0.2s;
}
body[data-estado="leido"] .lector__instruccion { color: var(--verde); }
body[data-estado="denegado"] .lector__instruccion { color: var(--rojo); }

.buffer {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 1rem;
  border: 1px solid var(--linea);
  border-radius: 6px;
  background: #191d21;
}
.buffer__etiqueta {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  color: var(--tenue);
}
.buffer__valor {
  font-family: var(--mono);
  font-size: 1rem;
  letter-spacing: 0.14em;
  color: var(--ambar);
}

/* ── Ficha ──────────────────────────────────────── */
.ficha {
  background: var(--carbon);
  padding: clamp(1.75rem, 5vw, 4rem);
  display: flex;
  align-items: center;
}

.ficha__vacia { color: var(--tenue); }
.ficha__vacia p {
  font-size: 1.5rem;
  font-weight: 500;
  color: #454d54;
}
.ficha__vacia span { font-size: 0.9rem; }

.ficha__datos { width: 100%; max-width: 560px; animation: entrar 0.35s ease-out; }

@keyframes entrar {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: none; }
}

.ficha__cabecera {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--linea);
}

.avatar {
  flex: none;
  width: 72px;
  height: 72px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--panel);
  border: 1px solid var(--linea);
  font-family: var(--mono);
  font-size: 1.4rem;
  color: var(--ambar);
}

.ficha__cabecera h1 {
  font-size: clamp(1.6rem, 4vw, 2.3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
}
.ficha__cabecera p { color: var(--tenue); margin-top: 0.3rem; }

.campos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1.5rem 2rem;
  padding: 1.75rem 0;
}
.campos dt {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--tenue);
  margin-bottom: 0.4rem;
}
.campos dd { font-size: 1.05rem; }
.mono { font-family: var(--mono); letter-spacing: 0.08em; }

.veredicto {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid;
}
.veredicto[data-acceso="permitido"] { color: var(--verde); border-color: #2c6b52; background: #16241e; }
.veredicto[data-acceso="restringido"] { color: var(--rojo); border-color: #6b3232; background: #241818; }

.ficha__error { max-width: 460px; animation: entrar 0.35s ease-out; }
.error__titulo {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--rojo);
  margin-bottom: 0.6rem;
}
.error__detalle { color: var(--tenue); line-height: 1.6; }
code {
  font-family: var(--mono);
  font-size: 0.85em;
  background: var(--panel);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}

/* ── Simulador ──────────────────────────────────── */
.simulador {
  border-top: 1px solid var(--linea);
  background: var(--panel);
  padding: 1rem clamp(1rem, 4vw, 2rem);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.5rem;
}
.simulador__nota { font-size: 0.8rem; color: var(--tenue); }
kbd {
  font-family: var(--mono);
  font-size: 0.75em;
  border: 1px solid var(--linea);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 0.1em 0.4em;
  color: var(--tinta);
}
.simulador__botones { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.simulador button {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--tinta);
  background: #262c32;
  border: 1px solid var(--linea);
  border-radius: 5px;
  padding: 0.5rem 0.9rem;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.simulador button:hover { background: #303840; border-color: #48525b; }
.simulador button.ghost { color: var(--tenue); background: none; }
:focus-visible { outline: 2px solid var(--ambar); outline-offset: 2px; }

/* ── Responsive ─────────────────────────────────── */
@media (max-width: 760px) {
  .terminal { grid-template-columns: 1fr; }
  .lector { padding: 2.5rem 1.5rem; gap: 1.5rem; }
  .antena { width: 130px; height: 130px; }
  .glifo { width: 58px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}