/* Paleta: pared de contenedor, acero, tiza, pintura de peligro, óxido */
:root {
  --wall: #34463c;
  --wall-dark: #2a3931;
  --steel: #1d2326;
  --ink: #141a1d;
  --chalk: #e7e4da;
  --chalk-dim: #b9b8ad;
  --hazard: #e0a526;
  --oxide: #c2543b;
  --ok: #7fcf8f;
  --display: "Big Shoulders Stencil Display", "Arial Narrow", Impact, sans-serif;
  --body: "Barlow", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { color-scheme: dark; }
body {
  margin: 0;
  background: var(--steel);
  color: var(--chalk);
  font: 400 1.0625rem/1.55 var(--body);
}

.top {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1rem clamp(1rem, 4vw, 3rem);
}
.mark { font: 900 1.35rem/1 var(--display); letter-spacing: .04em; }
.status { display: flex; align-items: center; gap: .55rem; margin: 0; font-size: .95rem; color: var(--chalk-dim); }
.dot { width: .65rem; height: .65rem; border-radius: 50%; background: var(--chalk-dim); }
.dot.up { background: var(--ok); box-shadow: 0 0 0 4px rgba(127, 207, 143, .18); }
.dot.down { background: var(--oxide); }

/* Pared de contenedor con corrugado */
.wall {
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
  padding: clamp(2.5rem, 7vw, 6rem) clamp(1rem, 4vw, 3rem);
  background:
    repeating-linear-gradient(90deg, rgba(0,0,0,.16) 0 3px, transparent 3px 44px),
    linear-gradient(180deg, var(--wall) 0%, var(--wall-dark) 100%);
  border-block: 6px solid var(--ink);
}
h1 {
  margin: 0 0 1.25rem;
  font: 900 clamp(2.8rem, 8.5vw, 6.5rem)/.95 var(--display);
  letter-spacing: .01em;
  text-transform: uppercase;
  color: var(--chalk);
  text-shadow: 0 2px 0 rgba(0,0,0,.35);
}
.lede { max-width: 34rem; margin: 0; font-size: 1.2rem; color: #dcd9cd; }

/* Etiqueta de carga: el formulario de registro */
.tag {
  position: relative;
  background: var(--chalk); color: var(--ink);
  padding: 2.6rem 1.6rem 1.6rem;
  border-radius: 6px 6px 6px 26px;
  box-shadow: 0 18px 40px rgba(0,0,0,.45);
}
.hole {
  position: absolute; top: .9rem; left: 50%; width: 1.1rem; height: 1.1rem; margin-left: -.55rem;
  border-radius: 50%; background: var(--wall-dark); box-shadow: inset 0 2px 3px rgba(0,0,0,.6);
}
.tag h2 { margin: 0 0 1rem; font: 900 1.9rem/1 var(--display); letter-spacing: .02em; }
label { display: block; margin-top: .9rem; font-weight: 600; }
input {
  width: 100%; min-width: 0; margin-top: .3rem; padding: .65rem .75rem;
  font: inherit; color: var(--ink); background: #fff;
  border: 2px solid #8b8a80; border-radius: 3px;
}
input:focus-visible, button:focus-visible, .button:focus-visible { outline: 3px solid var(--hazard); outline-offset: 2px; }
input[aria-invalid="true"] { border-color: var(--oxide); }
.hint { margin: .25rem 0 0; font-size: .875rem; color: #55574f; }

/* Barra de extracción: se llena con los datos correctos */
.extract {
  height: 1.1rem; margin-top: 1.4rem; overflow: hidden;
  background: #cfccc0; border: 2px solid var(--ink); border-radius: 2px;
}
.extract-fill {
  width: 0; height: 100%;
  background: repeating-linear-gradient(-45deg, var(--hazard) 0 10px, var(--ink) 10px 20px);
  transition: width .35s ease;
}
.extract-text { margin: .4rem 0 0; font-size: .9rem; color: #3e4038; }

button, .button {
  display: inline-block; margin-top: 1rem; padding: .8rem 1.5rem;
  font: 600 1.05rem/1 var(--body); text-decoration: none; cursor: pointer;
  color: var(--ink); background: var(--hazard); border: 2px solid var(--ink); border-radius: 3px;
}
button:hover:not(:disabled), .button:hover { background: #f0b83a; }
button:disabled, .button[aria-disabled="true"] { cursor: not-allowed; background: #c9c5b5; color: #6d6e66; }
.msg { min-height: 1.4em; margin: .8rem 0 0; font-weight: 600; }
.msg.err { color: #9a2a14; }
.msg.ok { color: #1c6b34; }

main > section:not(.wall) { max-width: 68rem; margin: 0 auto; padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1rem, 4vw, 3rem); }
h2 { font: 900 2.2rem/1.05 var(--display); letter-spacing: .02em; margin: 0 0 1.5rem; }

.rules dl { margin: 0; display: grid; gap: 0; }
.rules dl div {
  display: grid; grid-template-columns: 11rem 1fr; gap: 1.5rem;
  padding: 1rem 0; border-top: 1px solid rgba(231, 228, 218, .2);
}
.rules dl div:last-child { border-bottom: 1px solid rgba(231, 228, 218, .2); }
dt { font: 700 1.5rem/1.2 var(--display); letter-spacing: .03em; color: var(--hazard); }
dd { margin: 0; max-width: 40rem; }

.dl ol { margin: 0; padding: 0; list-style: none; counter-reset: paso; display: grid; gap: 2rem; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.dl li { counter-increment: paso; padding-top: 1rem; border-top: 4px solid var(--hazard); }
.dl li::before { content: counter(paso); display: block; font: 900 3rem/1 var(--display); color: var(--chalk-dim); }
.dl h3 { margin: .3rem 0 .4rem; font-size: 1.25rem; }
.dl p { margin: 0 0 .5rem; color: #d3d0c4; }
.meta { font-size: .875rem; color: var(--chalk-dim); }

footer { padding: 2rem clamp(1rem, 4vw, 3rem) 3rem; text-align: left; color: var(--chalk-dim); font-size: .9rem; }

@media (max-width: 860px) {
  .wall { grid-template-columns: minmax(0, 1fr); }
  .top { flex-wrap: wrap; }
  .rules dl div { grid-template-columns: minmax(0, 1fr); gap: .25rem; }
  .dl ol { grid-template-columns: minmax(0, 1fr); }
}
@media (prefers-reduced-motion: reduce) { .extract-fill { transition: none; } }