/* Pantalla de inicio de sesión (Views/Login/Login.cshtml + Views/Shared/_LayoutLogin.cshtml).
   Sin estilos en línea: la CSP de producción solo permite hojas de 'self'. */

:root {
  --login-rojo: #e11d2a;
  --login-rojo-hover: #c41622;
  --login-noche: #060d1a;
  --login-linea: rgba(255, 255, 255, .28);
  --login-texto: #ffffff;
  --login-texto-2: rgba(255, 255, 255, .68);
  --login-texto-3: rgba(255, 255, 255, .45);
}

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

.login-body {
  margin: 0;
  min-height: 100vh;
  font-family: "Montserrat", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--login-texto);
  background: var(--login-noche);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Fondo: luz ambiental + red de rutas logísticas ---------- */
.login-fondo { position: fixed; inset: 0; z-index: 0; overflow: hidden; }
.login-fondo::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60% 70% at 22% 45%, rgba(29, 78, 150, .55), transparent 70%),
    radial-gradient(45% 55% at 85% 85%, rgba(225, 29, 42, .22), transparent 70%),
    radial-gradient(40% 40% at 80% 10%, rgba(56, 120, 200, .25), transparent 70%),
    linear-gradient(160deg, #0a1730 0%, #060d1a 55%, #04080f 100%);
}
.login-fondo svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.login-fondo .malla { stroke: rgba(255, 255, 255, .035); stroke-width: 1; fill: none; }
.login-fondo .ruta { fill: none; stroke: rgba(140, 180, 255, .3); stroke-width: 1.1; }
.login-fondo .ruta-viva { fill: none; stroke: rgba(225, 29, 42, .75); stroke-width: 1.4; stroke-dasharray: 6 260; animation: login-viaje 9s linear infinite; }
.login-fondo .ruta-viva.lenta { animation-duration: 14s; stroke: rgba(160, 200, 255, .7); }
.login-fondo .nodo { fill: rgba(170, 205, 255, .55); }
.login-fondo .nodo-rojo { fill: var(--login-rojo); }
.login-fondo .pulso { fill: none; stroke: var(--login-rojo); stroke-width: 1; opacity: 0; transform-box: fill-box; transform-origin: center; animation: login-pulso 3.2s ease-out infinite; }
.login-fondo .retraso-1 { animation-delay: -.8s; }
.login-fondo .retraso-2 { animation-delay: -1.6s; }
.login-fondo .retraso-3 { animation-delay: -4s; }

@keyframes login-viaje { to { stroke-dashoffset: -1600; } }
@keyframes login-pulso { 0% { opacity: .8; transform: scale(.4); } 100% { opacity: 0; transform: scale(3.2); } }
@media (prefers-reduced-motion: reduce) {
  .login-fondo .ruta-viva, .login-fondo .pulso { animation: none; }
}

/* ---------- Distribución ---------- */
.login-pantalla {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 460px);
  align-items: center;
  gap: 48px;
  max-width: 1240px;
  margin: 0 auto;
  padding: 48px 56px;
}

/* ---------- Marca ---------- */
.login-marca h1 { font-size: clamp(44px, 6vw, 76px); font-weight: 700; letter-spacing: .06em; line-height: 1; margin: 0; }
.login-marca h1 span { color: var(--login-rojo); }
.login-marca .lema { font-size: clamp(16px, 1.6vw, 21px); font-weight: 400; color: var(--login-texto-2); margin: 18px 0 0; max-width: 480px; line-height: 1.5; }
.login-marca .separador { width: 100%; max-width: 420px; height: 1px; background: linear-gradient(90deg, var(--login-linea), transparent); margin: 26px 0 0; }
.login-marca .datos { display: flex; gap: 28px; margin-top: 26px; flex-wrap: wrap; }
.login-marca .dato { font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--login-texto-3); display: flex; align-items: center; gap: 8px; }
.login-marca .dato::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--login-rojo); }

/* ---------- Tarjeta ---------- */
.login-tarjeta {
    background: rgba(6, 12, 24, .62);
    -webkit-backdrop-filter: blur(16px) saturate(140%);
    backdrop-filter: blur(16px) saturate(140%);
    border: 1px solid rgba(0, 0, 0, .11);
    border-radius: 16px;
    padding: 44px 40px 28px;
    box-shadow: 0 10px 40px rgba(255, 255, 255, .20);
}
.login-tarjeta .logo { display: block; height: 52px; width: auto; margin: 0 auto 10px; }
.login-tarjeta .bienvenida { text-align: center; font-size: 13px; letter-spacing: .14em; text-transform: uppercase; color: var(--login-texto-3); margin: 0 0 34px; }

/* Mensajes del servidor (asp-validation-summary) */
.login-error { font-size: 13px; line-height: 1.5; color: #fecaca; background: rgba(225, 29, 42, .14); border: 1px solid rgba(225, 29, 42, .45); border-radius: 8px; padding: 10px 12px; margin: 0 0 24px; }
.login-error ul { margin: 0; padding: 0; list-style: none; }
.login-error.validation-summary-valid { display: none; }

/* Campos con línea inferior */
.login-campo { position: relative; display: flex; align-items: center; gap: 14px; border-bottom: 1px solid var(--login-linea); margin: 0; }
.login-campo::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; background: var(--login-rojo); transform: scaleX(0); transform-origin: left; transition: transform .25s ease; }
.login-campo:focus-within::after { transform: scaleX(1); }
.login-campo svg { width: 20px; height: 20px; color: var(--login-texto-2); flex: none; }
.login-campo input {
  flex: 1; min-width: 0; border: 0; outline: 0; background: transparent;
  font: inherit; font-size: 15px; color: var(--login-texto); padding: 12px 0;
}
.login-campo input::placeholder { color: var(--login-texto-2); }
.login-campo input:-webkit-autofill,
.login-campo input:-webkit-autofill:hover,
.login-campo input:-webkit-autofill:focus { -webkit-text-fill-color: #fff; caret-color: #fff; transition: background-color 9999s ease-in-out 0s; }
.login-campo button { border: 0; background: none; color: var(--login-texto-3); padding: 6px; cursor: pointer; display: flex; border-radius: 6px; }
.login-campo button:hover, .login-campo button:focus-visible { color: var(--login-texto); }
.login-campo button:focus-visible { outline: 2px solid rgba(255, 255, 255, .6); outline-offset: 2px; }
.login-campo:has(input.input-validation-error) { border-bottom-color: rgba(248, 113, 113, .8); }

.login-mensaje { display: block; min-height: 26px; padding-top: 6px; font-size: 12px; color: #fca5a5; }
.login-mensaje.field-validation-valid { color: transparent; }

.login-aviso { display: none; align-items: center; gap: 8px; font-size: 12px; color: #fbbf24; margin: -14px 0 12px; }
.login-aviso.visible { display: flex; }
.login-aviso svg { width: 14px; height: 14px; flex: none; }

/* Botón */
.login-boton {
  width: 100%; height: 48px; margin-top: 6px; border: 0; border-radius: 8px; cursor: pointer;
  background: var(--login-rojo); color: #fff; font: inherit; font-size: 13px; font-weight: 600; letter-spacing: .18em; text-transform: uppercase;
  transition: background .2s, transform .1s;
}
.login-boton:hover { background: var(--login-rojo-hover); }
.login-boton:active { transform: scale(.99); }
.login-boton:focus-visible { outline: 2px solid #fff; outline-offset: 3px; }

.login-ayuda { text-align: center; font-size: 12px; color: var(--login-texto-3); margin: 18px 0 0; line-height: 1.5; }
.login-pie { display: flex; justify-content: center; align-items: center; gap: 10px; margin-top: 26px; padding-top: 18px; border-top: 1px solid rgba(255, 255, 255, .1); font-size: 12px; color: var(--login-texto-2); }
.login-pie .sep { width: 1px; height: 12px; background: var(--login-linea); }

/* Texto solo para lectores de pantalla */
.login-sr { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

/* ---------- Celular ---------- */
@media (max-width: 900px) {
  .login-pantalla { grid-template-columns: 1fr; gap: 28px; padding: 36px 20px 28px; align-content: start; }
  .login-marca { text-align: center; }
  .login-marca h1 { font-size: 40px; }
  .login-marca .lema { font-size: 15px; margin: 10px auto 0; }
  .login-marca .separador, .login-marca .datos { display: none; }
  .login-tarjeta { padding: 34px 24px 22px; }
  .login-tarjeta .logo { height: 44px; }
  .login-tarjeta .bienvenida { margin-bottom: 26px; }
}

/* Ambiente: QA en ámbar; Producción en rojo (solo en una PC de desarrollo) */
.login-ambiente {
  position: fixed; top: 16px; left: 50%; transform: translateX(-50%); z-index: 5;
  padding: 4px 12px; border: 1px solid #f3b44a; border-radius: 999px;
  background: rgba(243, 180, 74, .14); color: #f3b44a;
  font-size: .72rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
}
.login-ambiente.produccion { border-color: var(--login-rojo); background: var(--login-rojo); color: #fff; }