/* KS77 — hoja de estilo común
   Paleta sacada de la propia marca: negro azulado, azul eléctrico y plata. */

:root {
  --negro: #02020C;
  --negro-2: #070A16;
  --azul: #008CFD;
  --plata: #DADADC;
  --gris: #868C9B;
  --linea: rgba(218, 218, 220, 0.14);
}

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

html, body { height: 100%; }

body {
  background: var(--negro);
  color: var(--plata);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ------------------------------------------------------------- portada */

.portada { position: relative; min-height: 100svh; overflow: hidden; display: flex; }

.portada img.fondo {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center 45%;
  user-select: none;
}

/* viñeta: oscurece bordes y abajo, para que la puerta se lea siempre */
.portada::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(120% 90% at 50% 45%, transparent 40%, rgba(2, 2, 12, 0.55) 78%, rgba(2, 2, 12, 0.92) 100%),
    linear-gradient(to bottom, transparent 55%, rgba(2, 2, 12, 0.85) 100%);
}

.oculto {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

.puerta {
  position: relative; z-index: 2;
  margin: auto auto 0; padding: 0 24px 56px;
  display: flex; flex-direction: column; align-items: center; gap: 14px;
}

.puerta a {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 30px;
  border: 1px solid var(--linea);
  border-radius: 999px;
  color: var(--plata);
  font-size: 0.82rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  text-decoration: none;
  background: rgba(7, 10, 22, 0.55);
  backdrop-filter: blur(8px);
  transition: border-color 0.25s, color 0.25s, box-shadow 0.25s;
}

.puerta a:hover,
.puerta a:focus-visible {
  border-color: var(--azul);
  color: #fff;
  box-shadow: 0 0 0 1px rgba(0, 140, 253, 0.35), 0 0 34px rgba(0, 140, 253, 0.28);
  outline: none;
}

.puerta svg { width: 14px; height: 14px; stroke: currentColor; fill: none; stroke-width: 1.8; }

.pie {
  position: relative; z-index: 2;
  text-align: center;
  padding-bottom: 26px;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: rgba(134, 140, 155, 0.7);
}

/* -------------------------------------------------------------- acceso */

.acceso-pagina {
  min-height: 100svh;
  display: flex; align-items: center; justify-content: center;
  padding: 40px 22px;
  background:
    radial-gradient(80% 55% at 50% 0%, rgba(0, 140, 253, 0.10), transparent 70%),
    var(--negro);
}

.caja { width: 100%; max-width: 372px; }

.marca { display: block; width: 118px; margin: 0 auto 30px; }

.caja h1 {
  font-size: 0.78rem; font-weight: 500;
  letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--gris); text-align: center; margin-bottom: 30px;
}

.campo { margin-bottom: 16px; }

.campo label {
  display: block; margin-bottom: 8px;
  font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--gris);
}

.campo input {
  width: 100%; padding: 14px 15px;
  background: var(--negro-2);
  border: 1px solid var(--linea);
  border-radius: 9px;
  color: #fff;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.campo input:focus {
  outline: none;
  border-color: var(--azul);
  box-shadow: 0 0 0 3px rgba(0, 140, 253, 0.16);
}

.campo input.codigo {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  letter-spacing: 0.42em;
  text-align: center;
  font-size: 1.22rem;
}

button[type="submit"] {
  width: 100%; margin-top: 10px; padding: 15px;
  background: var(--azul);
  border: 0; border-radius: 9px;
  color: #001b33; font-size: 0.86rem; font-weight: 700;
  letter-spacing: 0.16em; text-transform: uppercase;
  cursor: pointer;
  transition: filter 0.2s, transform 0.06s;
}

button[type="submit"]:hover { filter: brightness(1.12); }
button[type="submit"]:active { transform: translateY(1px); }

.aviso {
  margin-bottom: 20px; padding: 12px 14px;
  border: 1px solid rgba(216, 155, 44, 0.45);
  border-radius: 9px;
  background: rgba(216, 155, 44, 0.09);
  color: #E7C27E;
  font-size: 0.86rem; line-height: 1.45;
}

.nota { margin-top: 22px; text-align: center; font-size: 0.72rem; color: rgba(134, 140, 155, 0.75); line-height: 1.6; }

/* -------------------------------------------------------------- privado */

.privado-pagina {
  min-height: 100svh; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 22px;
  padding: 40px 22px; text-align: center;
}

.privado-pagina img { width: 96px; opacity: 0.9; }
.privado-pagina h1 { font-size: 1.5rem; font-weight: 500; color: #fff; }
.privado-pagina p { color: var(--gris); font-size: 0.92rem; max-width: 44ch; line-height: 1.6; }

.privado-pagina a {
  margin-top: 8px; padding: 11px 24px;
  border: 1px solid var(--linea); border-radius: 999px;
  color: var(--plata); text-decoration: none;
  font-size: 0.76rem; letter-spacing: 0.18em; text-transform: uppercase;
  transition: border-color 0.2s, color 0.2s;
}

.privado-pagina a:hover { border-color: var(--azul); color: #fff; }

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