:root {
  color-scheme: dark;
  --fondo: #000000;
  --superficie: #0a1a21;
  --tinta: #ffffff;
  --suave: #9ca3af;
  --borde: #2a2a2a;
  --lima: #c8fe00;
  --neon: #39ff14;
  --alerta: #ff8a75;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 5rem; background: var(--fondo); }

body {
  margin: 0;
  background: var(--fondo);
  color: var(--tinta);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.6;
}

h1, h2 {
  color: var(--lima);
  font-weight: 700;
  line-height: 1.15;
  margin: 0;
}

h1 { font-size: clamp(2.5rem, 7vw, 4.5rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.75rem, 4vw, 2.25rem); margin-bottom: 1rem; }
a { color: var(--lima); }

.contenedor {
  width: min(72rem, 100%);
  margin-inline: auto;
  padding-inline: 1rem;
}

.saltar {
  position: absolute;
  left: -100vw;
  padding: 0.5rem 1rem;
  color: #000000;
  background: var(--lima);
}
.saltar:focus { left: 1rem; top: 1rem; z-index: 20; }

.cabecera {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--fondo);
  border-bottom: 1px solid var(--borde);
}

.cabecera-fila {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.25rem 1.5rem;
  padding-block: 0.75rem;
}

.marca { color: inherit; font-weight: 700; text-decoration: none; }

nav { display: flex; gap: 1.25rem; }
nav a { color: var(--suave); text-decoration: none; }
nav a:hover { color: var(--lima); text-decoration: underline; }

.portada { padding-block: clamp(3rem, 10vw, 6.5rem) clamp(2.5rem, 7vw, 4.5rem); }
.lema { font-size: clamp(1.125rem, 2.5vw, 1.375rem); color: var(--suave); max-width: 38rem; margin: 1rem 0 2rem; }

.seccion { padding-block: clamp(2rem, 5vw, 3.5rem); border-top: 1px solid var(--borde); }
.texto { max-width: 42rem; margin: 0 0 1.5rem; }

.pendiente {
  color: var(--tinta);
  border-bottom: 2px dashed var(--lima);
}

.lista-talleres { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr)); gap: 1rem; }
.enlace-taller {
  display: block;
  padding: 1.25rem;
  color: var(--tinta);
  background: var(--superficie);
  border: 1px solid var(--borde);
  border-radius: 0.75rem;
  text-decoration: none;
}
.enlace-taller:hover { border-color: var(--lima); }
.enlace-taller small { display: block; color: var(--lima); font-weight: 700; }
.enlace-taller strong { display: block; margin-top: 0.25rem; font-size: 1.125rem; }

.tablero {
  display: grid;
  grid-template-columns: minmax(16rem, 1fr) minmax(0, 2fr);
  gap: 1rem;
  align-items: start;
}

.tarjeta {
  grid-column: 2;
  min-width: 0;
  background: var(--superficie);
  border: 1px solid var(--borde);
  border-radius: 0.75rem;
  padding: 1.25rem;
}

.tarjeta-lista {
  grid-column: 1;
  grid-row: 1 / span 3;
  position: sticky;
  top: 5rem;
}

.tarjeta-encabezado {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.25rem 1rem;
  margin-bottom: 0.75rem;
}

.titulo-tarjeta { display: block; margin: 0; font-size: 1.125rem; font-weight: 700; }
.tarjeta-lista .titulo-tarjeta { margin-bottom: 0.75rem; }

textarea, input {
  font: inherit;
  color: inherit;
  background: var(--fondo);
  border: 1px solid var(--suave);
  border-radius: 0.5rem;
  padding: 0.5rem 0.625rem;
}

textarea { display: block; width: 100%; resize: vertical; }
input[type="number"] { width: 5.5rem; }

.controles {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-block: 0.75rem;
}

.boton {
  display: inline-block;
  font: inherit;
  font-weight: 600;
  min-height: 2.75rem;
  padding: 0.5rem 1rem;
  color: var(--tinta);
  background: transparent;
  border: 1px solid var(--suave);
  border-radius: 0.5rem;
  cursor: pointer;
  text-decoration: none;
}
.boton:hover { color: var(--lima); border-color: var(--lima); }

.boton-principal { color: #000000; background: var(--lima); border-color: var(--lima); }
.boton-principal:hover { color: #000000; background: var(--neon); border-color: var(--neon); }

.boton-texto {
  font: inherit;
  font-size: 0.9375rem;
  color: var(--lima);
  background: none;
  border: 0;
  padding: 0.25rem 0;
  cursor: pointer;
  text-decoration: underline;
}

:focus-visible { outline: 3px solid var(--neon); outline-offset: 2px; }

.nota { color: var(--suave); font-size: 0.9375rem; margin: 0.5rem 0 0; }
.aviso { color: var(--alerta); font-weight: 600; margin: 0; }
.aviso:empty { display: none; }

.grupos {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(10rem, 1fr));
  gap: 0.75rem;
  margin-top: 0.75rem;
}
.grupos:empty { display: none; }

.grupo { background: var(--fondo); border: 1px solid var(--borde); border-radius: 0.5rem; padding: 0.75rem; overflow-wrap: anywhere; }
.grupo h4 { margin: 0 0 0.25rem; color: var(--lima); font-size: 1rem; }
.grupo ul { list-style: none; margin: 0; padding: 0; }

.elegido {
  margin: 0.5rem 0;
  color: var(--lima);
  font-size: clamp(1.75rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  overflow-wrap: anywhere;
}

.reloj {
  margin: 0.25rem 0;
  font-size: clamp(3.5rem, 11vw, 6rem);
  font-weight: 700;
  line-height: 1.1;
  text-align: center;
  font-variant-numeric: tabular-nums;
}
.reloj.terminado { color: var(--alerta); }

.tarjeta:fullscreen { overflow: auto; padding: clamp(1.5rem, 4vw, 4rem); border: 0; border-radius: 0; background: var(--fondo); }
.tarjeta:fullscreen .titulo-tarjeta { font-size: 1.75rem; }
.tarjeta:fullscreen .elegido { font-size: clamp(3rem, 11vw, 9rem); margin-block: 18vh 10vh; }
.tarjeta:fullscreen .reloj { font-size: clamp(6rem, 26vw, 22rem); margin-block: 8vh 6vh; }
.tarjeta:fullscreen .grupos { grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); font-size: 1.5rem; }
.tarjeta:fullscreen .grupo h4 { font-size: 1.5rem; }

.pie { padding-block: 2rem 3rem; color: var(--suave); border-top: 1px solid var(--borde); }
.pie p { margin: 0; }

@media (max-width: 52rem) {
  .tablero { grid-template-columns: minmax(0, 1fr); }
  .tarjeta, .tarjeta-lista { grid-column: 1; grid-row: auto; position: static; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}