/* Laura IA — hoja única, sin dependencias ni fuentes externas */

:root {
  color-scheme: dark;
  --fondo: #0b0a12;
  --fondo-alto: #13111f;
  --borde: #262338;
  --texto: #ece9f6;
  --texto-suave: #a9a3c2;
  --violeta: #a78bfa;
  --violeta-hondo: #7c3aed;
  --cian: #22d3ee;
  --degradado: linear-gradient(120deg, var(--violeta) 0%, var(--cian) 100%);
  --radio: 18px;
  --ancho: 68rem;
  --lectura: 42rem;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", "Roboto Mono", Menlo, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(60rem 32rem at 85% -10%, rgb(124 58 237 / 0.22), transparent 70%),
    radial-gradient(48rem 28rem at -10% 10%, rgb(34 211 238 / 0.12), transparent 70%),
    var(--fondo);
  background-attachment: fixed;
  color: var(--texto);
  font: 400 1.0625rem/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
}

main { flex: 1; }

a { color: var(--cian); text-underline-offset: 0.2em; text-decoration-thickness: 1px; }
a:hover { color: #67e8f9; text-decoration-thickness: 2px; }

:focus-visible {
  outline: 2px solid var(--cian);
  outline-offset: 3px;
  border-radius: 6px;
}

.saltar {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 10;
  padding: 0.6rem 1rem;
  border-radius: 10px;
  background: var(--texto);
  color: var(--fondo);
  font-weight: 600;
  text-decoration: none;
}
.saltar:focus { top: 1rem; }

.contenedor {
  width: 100%;
  max-width: var(--ancho);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

/* Cabecera */

.cabecera {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.5rem;
}

.marca {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--texto);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
  text-decoration: none;
}
.marca:hover { color: var(--texto); }
.marca img { width: 2.25rem; height: 2.25rem; }

.nav { display: flex; gap: 0.25rem; flex-wrap: wrap; }
.nav a {
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  color: var(--texto-suave);
  font-size: 0.9375rem;
  text-decoration: none;
}
.nav a:hover { color: var(--texto); background: rgb(255 255 255 / 0.05); }
.nav a[aria-current="page"] { color: var(--texto); background: rgb(167 139 250 / 0.14); }

/* Portada */

.portada { padding-block: clamp(3rem, 10vw, 7rem) clamp(2.5rem, 6vw, 4.5rem); }

.antetitulo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 1.5rem;
  padding: 0.35rem 0.85rem 0.35rem 0.65rem;
  border: 1px solid var(--borde);
  border-radius: 999px;
  background: rgb(19 17 31 / 0.7);
  color: var(--texto-suave);
  font-size: 0.875rem;
}
.antetitulo::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--cian);
  box-shadow: 0 0 0 4px rgb(34 211 238 / 0.18);
}

h1, h2, h3 { line-height: 1.15; letter-spacing: -0.025em; text-wrap: balance; }
h2, h3 { font-weight: 700; }

.portada h1 {
  max-width: 16ch;
  margin: 0;
  font-size: clamp(2.6rem, 7.5vw, 5rem);
  font-weight: 800;
}
.portada h1 em {
  font-style: normal;
  background: var(--degradado);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.entradilla {
  max-width: 38rem;
  margin: 1.5rem 0 2.25rem;
  color: var(--texto-suave);
  font-size: clamp(1.125rem, 2.2vw, 1.3rem);
}

.acciones { display: flex; flex-wrap: wrap; gap: 0.75rem; }

.boton {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.8rem 1.25rem;
  border: 1px solid var(--borde);
  border-radius: 14px;
  background: var(--fondo-alto);
  color: var(--texto);
  font-weight: 600;
  text-decoration: none;
  transition: border-color 0.15s, transform 0.15s;
}
.boton:hover { color: var(--texto); border-color: var(--violeta); transform: translateY(-1px); }
.boton svg { width: 1.15rem; height: 1.15rem; flex: none; }
.boton span { color: var(--texto-suave); font-weight: 400; }

/* Bloques */

.seccion { padding-block: clamp(2rem, 6vw, 4rem); }
.seccion + .seccion { border-top: 1px solid var(--borde); }

.seccion > h2 {
  margin: 0 0 2rem;
  font-size: clamp(1.6rem, 3.5vw, 2.25rem);
}

.rejilla {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tarjeta {
  position: relative;
  padding: 1.5rem;
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  background: linear-gradient(180deg, rgb(255 255 255 / 0.03), transparent), var(--fondo-alto);
}
.tarjeta h3 { margin: 0 0 0.5rem; font-size: 1.125rem; }
.tarjeta p { margin: 0; color: var(--texto-suave); }
.tarjeta .num {
  display: block;
  margin-bottom: 1rem;
  color: var(--violeta);
  font: 600 0.8125rem/1 var(--mono);
  letter-spacing: 0.08em;
}

.aviso {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.25rem;
  align-items: start;
  padding: clamp(1.25rem, 3vw, 2rem);
  border-radius: var(--radio);
  border: 1px solid transparent;
  background:
    linear-gradient(var(--fondo-alto), var(--fondo-alto)) padding-box,
    var(--degradado) border-box;
}
.aviso img { width: 3rem; height: 3rem; }
.aviso h2 { margin: 0 0 0.5rem; font-size: 1.375rem; }
.aviso p { margin: 0; color: var(--texto-suave); }
.aviso p + p { margin-top: 0.75rem; }

/* Páginas legales */

.legal { padding-block: clamp(2.5rem, 7vw, 5rem); }
.legal > * { max-width: var(--lectura); }

.legal h1 { margin: 0 0 0.75rem; font-size: clamp(2.2rem, 5.5vw, 3.25rem); font-weight: 800; }

.fecha { margin: 0 0 2.5rem; color: var(--texto-suave); font-size: 0.9375rem; }

.resumen {
  margin: 0 0 3rem;
  padding: 1.25rem 1.5rem;
  border-left: 3px solid var(--cian);
  border-radius: 0 12px 12px 0;
  background: rgb(34 211 238 / 0.06);
}
.resumen p { margin: 0; }
.resumen ul { margin: 0.5rem 0 0; padding-left: 1.2rem; }

.legal h2 {
  margin: 2.75rem 0 0.75rem;
  font-size: 1.375rem;
  scroll-margin-top: 1.5rem;
}
.legal h2 .num { margin-right: 0.5rem; color: var(--violeta); font: 600 0.95rem var(--mono); }
.legal p, .legal li { color: #d6d2e6; }
.legal ul { padding-left: 1.2rem; }
.legal li + li { margin-top: 0.4rem; }
.legal strong { color: var(--texto); }

.ingles {
  margin-top: 4rem;
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  background: var(--fondo-alto);
}
.ingles h2 { margin-top: 0; }
.ingles h3 { margin: 1.75rem 0 0.5rem; font-size: 1.0625rem; }
.ingles p, .ingles li { font-size: 0.975rem; }
.etiqueta {
  display: inline-block;
  margin-bottom: 0.75rem;
  padding: 0.15rem 0.55rem;
  border-radius: 6px;
  background: rgb(167 139 250 / 0.14);
  color: var(--violeta);
  font: 600 0.75rem/1.6 var(--mono);
  letter-spacing: 0.08em;
}

/* Pie */

.pie {
  margin-top: 3rem;
  padding-block: 2rem;
  border-top: 1px solid var(--borde);
  color: var(--texto-suave);
  font-size: 0.9rem;
}
.pie .contenedor { display: flex; flex-wrap: wrap; gap: 0.75rem 2rem; justify-content: space-between; }
.pie p { margin: 0; }
.pie nav { display: flex; flex-wrap: wrap; gap: 1.25rem; }
.pie a { color: var(--texto-suave); }
.pie a:hover { color: var(--texto); }

@media (max-width: 60rem) {
  .rejilla { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 34rem) {
  .rejilla { grid-template-columns: 1fr; }
  .cabecera { flex-direction: column; align-items: flex-start; }
  .nav { margin-left: -0.8rem; }
  .aviso { grid-template-columns: 1fr; }
  .boton { width: 100%; justify-content: center; }
}

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