/* ==========================================================================
   ACCESO · Liquid Glass

   Pantalla completa, una sola columna: hasta que alguien no entra, no hay
   nada que navegar. El fondo tiene gradientes vivos que dan vida, y la
   tarjeta usa glassmorphism (Liquid Glass): semi-transparente, con
   backdrop-filter blur, bordes luminosos y sombra difusa.
   ========================================================================== */

/* ---- Fondo animado con gradientes ---- */
body.acceso {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px 20px;
  background: var(--bg);
  position: relative;
  overflow: hidden;
}

body.acceso::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 60% 50% at 15% 20%, rgba(15,63,214,.12), transparent),
    radial-gradient(ellipse 50% 60% at 85% 75%, rgba(255,157,46,.10), transparent),
    radial-gradient(ellipse 40% 40% at 50% 50%, rgba(58,107,240,.06), transparent);
  animation: liquidShift 12s ease-in-out infinite alternate;
}

@keyframes liquidShift {
  0%   { transform: scale(1) translate(0, 0); }
  33%  { transform: scale(1.05) translate(-2%, 3%); }
  66%  { transform: scale(1.02) translate(2%, -2%); }
  100% { transform: scale(1) translate(0, 0); }
}

/* Puntos decorativos de acento */
body.acceso::after {
  content: '';
  position: fixed;
  width: 280px; height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,157,46,.08), transparent 70%);
  top: -60px; right: -60px;
  z-index: 0;
  filter: blur(40px);
}

/* ---- Contenedor ---- */
.caja {
  width: min(420px, 100%);
  position: relative;
  z-index: 1;
}

/* ---- Enlace volver ---- */
.volver {
  display: inline-block; margin-bottom: 24px;
  font-size: 13.5px; color: var(--ink-3);
  transition: color .2s;
}
.volver:hover { color: var(--brand); text-decoration: none; }

/* ---- Marca / logo ---- */
.caja .marca { text-align: center; margin-bottom: 28px; }
.caja .marca .isotipo { margin-bottom: 14px; }
.caja .marca h1 {
  font-size: 28px; font-weight: 700;
  background: linear-gradient(135deg, var(--brand) 0%, var(--salvia) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.caja .marca p { margin: 8px 0 0; font-size: 14px; color: var(--ink-3); }

/* ---- Tarjeta Liquid Glass ---- */
.tarjeta {
  padding: 28px;
  border-radius: 24px;
  background: rgba(255, 255, 255, .55);
  backdrop-filter: blur(24px) saturate(1.4);
  -webkit-backdrop-filter: blur(24px) saturate(1.4);
  border: 1px solid rgba(255, 255, 255, .65);
  box-shadow:
    0 4px 24px rgba(15,63,214,.06),
    0 1px 3px rgba(0,0,0,.04),
    inset 0 1px 0 rgba(255,255,255,.7);
  transition: box-shadow .3s, transform .3s;
}
.tarjeta:hover {
  box-shadow:
    0 8px 32px rgba(15,63,214,.10),
    0 2px 6px rgba(0,0,0,.05),
    inset 0 1px 0 rgba(255,255,255,.8);
  transform: translateY(-1px);
}
.tarjeta .btn { margin-top: 6px; }

/* ---- Campos ---- */
.tarjeta .campo {
  display: grid; gap: 6px; margin-bottom: 16px;
}
.tarjeta .campo span {
  font-size: 12px; font-weight: 600;
  color: var(--ink-2); letter-spacing: .02em;
}
.tarjeta .campo input {
  width: 100%; padding: 13px 16px;
  border: 1.5px solid rgba(219,228,255,.8);
  border-radius: 14px;
  background: rgba(255,255,255,.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  font: inherit; font-size: 15px; color: var(--ink);
  transition: border-color .2s, box-shadow .2s, background .2s;
}
.tarjeta .campo input::placeholder {
  color: var(--ink-4); font-weight: 400;
}
.tarjeta .campo input:focus {
  outline: none;
  border-color: var(--brand);
  background: rgba(255,255,255,.9);
  box-shadow: 0 0 0 4px rgba(15,63,214,.10), 0 2px 8px rgba(15,63,214,.06);
}

/* ---- Selector V/E (campoIdentidad) ---- */
.campoIdentidad {
  display: flex;
  border: 1.5px solid rgba(219,228,255,.8);
  border-radius: 14px;
  overflow: hidden;
  background: rgba(255,255,255,.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: border-color .2s, box-shadow .2s;
}
.campoIdentidad:focus-within {
  border-color: var(--brand);
  box-shadow: 0 0 0 4px rgba(15,63,214,.10), 0 2px 8px rgba(15,63,214,.06);
}
.campoIdentidad-tipo {
  flex-shrink: 0; width: 48px;
  background: rgba(15,63,214,.06);
  color: var(--brand);
  font-weight: 700; font-size: 15px;
  border: none;
  border-right: 1.5px solid rgba(219,228,255,.6);
  cursor: pointer;
  transition: background .2s;
}
.campoIdentidad-tipo:hover { background: rgba(15,63,214,.12); }
.tarjeta .campo .campoIdentidad input,
.campoIdentidad input {
  width: 100%; padding: 13px 16px;
  border: none; background: transparent;
  backdrop-filter: none; -webkit-backdrop-filter: none;
  border-radius: 0;
  font: inherit; font-size: 15px; color: var(--ink);
  box-shadow: none;
}
.tarjeta .campo .campoIdentidad input::placeholder,
.campoIdentidad input::placeholder { color: var(--ink-4); font-weight: 400; }
.tarjeta .campo .campoIdentidad input:focus,
.campoIdentidad input:focus { outline: none; box-shadow: none; border: none; background: transparent; }
/* Cuando se detecta que es un correo, el botón V/E se oculta y el input
   ocupa todo el ancho — la transición es suave. */
.campoIdentidad.esCorreo { border-radius: 14px; }

/* ---- Botón principal ---- */
.tarjeta .btn.bloque {
  width: 100%; padding: 14px;
  font-size: 15px; font-weight: 600;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--brand) 0%, var(--salvia) 100%);
  color: #fff; border: none;
  box-shadow: 0 4px 14px rgba(15,63,214,.25);
  transition: transform .2s, box-shadow .2s, filter .2s;
  cursor: pointer;
}
.tarjeta .btn.bloque:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(15,63,214,.30);
  filter: brightness(1.06);
}
.tarjeta .btn.bloque:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(15,63,214,.20);
}

/* ---- Selector de roles (cuando hay varios perfiles) ---- */
.tarjeta .btn.bloque[name="rol"] {
  background: rgba(255,255,255,.6);
  color: var(--ink); border: 1.5px solid var(--line);
  box-shadow: 0 2px 8px rgba(0,0,0,.03);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.tarjeta .btn.bloque[name="rol"]:hover {
  background: rgba(255,255,255,.85);
  border-color: var(--brand);
  color: var(--brand);
  box-shadow: 0 4px 14px rgba(15,63,214,.08);
}

/* ---- Aviso de error ---- */
.aviso {
  padding: 12px 16px; border-radius: 14px;
  font-size: 13.5px; line-height: 1.5;
  margin-bottom: 16px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.aviso.mal {
  background: rgba(166,56,44,.08);
  border: 1px solid rgba(166,56,44,.18);
  color: var(--bad);
}

/* ---- Ayuda inferior ---- */
.caja .ayuda {
  margin: 24px 0 0; text-align: center;
  font-size: 13px; line-height: 1.6;
  color: var(--ink-3);
}
.caja .ayuda a { color: var(--brand); text-decoration: none; }
.caja .ayuda a:hover { text-decoration: underline; }

/* ---- Responsive ---- */
@media (max-width: 480px) {
  body.acceso { padding: 24px 16px; }
  .tarjeta { padding: 22px; border-radius: 20px; }
  .tarjeta .campo input { padding: 12px 14px; border-radius: 12px; }
  .tarjeta .btn.bloque { border-radius: 12px; }
}