* {
  box-sizing: border-box;
}

:root {
  --bg1: #0a2342;
  --bg2: #0f4c81;
  --primary: #0f4c81;
  --primary-2: #145da0;
  --primary-3: #3c8fd6;
  --text: #0f172a;
  --muted: #64748b;
  --border: #d6dde6;
  --input-bg: #f8fafc;
  --danger: #dc2626;
  --danger-2: #ef4444;
  --danger-bg-1: #fff5f5;
  --danger-bg-2: #ffebeb;
}

html,
body {
  width: 100%;
  overflow-x: hidden;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background: linear-gradient(135deg, var(--bg1) 0%, var(--bg2) 100%);
  min-height: 100vh;
}

.contenedor-login {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 24px;
}

.tarjeta-login {
  width: 100%;
  max-width: 460px;
  background: #ffffff;
  border-radius: 24px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.18);
  padding: 28px 30px;
}

.cabecera-login {
  text-align: center;
  margin-bottom: 20px;
}

.linea-superior {
  width: 58px;
  height: 6px;
  background: linear-gradient(90deg, var(--primary), var(--primary-3));
  border-radius: 999px;
  margin: 0 auto 14px;
}

.cabecera-login h1 {
  margin: 0 0 8px;
  font-size: 24px;
  font-weight: 800;
  color: var(--text);
}

.cabecera-login p {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

form {
  width: 100%;
}

label {
  display: block;
  margin-bottom: 8px;
  margin-top: 14px;
  text-align: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
}

input {
  width: 100%;
  height: 46px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--input-bg);
  padding: 0 16px;
  font-size: 15px;
  text-align: center;
  color: var(--text);
  outline: none;
  transition: all 0.2s ease;
}

input::placeholder {
  color: #94a3b8;
  text-align: center;
}

input:focus {
  background: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(15, 76, 129, 0.10);
}

/* Estado de validación con spinner */
.estado-validacion {
  margin-top: 14px;
  padding: 12px 14px;
  border: 1px solid #dbe2ea;
  border-radius: 14px;
  background: #f8fbff;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-align: center;
  color: #334155;
  font-size: 14px;
  font-weight: 600;
}

.spinner {
  width: 18px;
  height: 18px;
  border: 3px solid #dbe2ea;
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: giroSpinner 0.8s linear infinite;
  flex: 0 0 18px;
}

@keyframes giroSpinner {
  to {
    transform: rotate(360deg);
  }
}

.vista-usuario {
  margin-top: 16px;
  padding: 16px 14px;
  border: 1px solid #dbe2ea;
  border-radius: 18px;
  background: linear-gradient(180deg, #f8fbff 0%, #f3f7fb 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-align: center;
  min-height: 150px;
}

.foto-box {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  overflow: hidden;
  background: #dbeafe;
  border: 3px solid #ffffff;
  box-shadow: 0 6px 16px rgba(15, 76, 129, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
}

.foto-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  background: #e2e8f0;
}

.datos-usuario {
  text-align: center;
  width: 100%;
}

.nombre-usuario {
  font-size: 16px;
  font-weight: 800;
  color: var(--text);
  line-height: 1.3;
  word-break: break-word;
}

.rol-usuario {
  margin-top: 4px;
  font-size: 13px;
  font-weight: 800;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  word-break: break-word;
}

button {
  width: 100%;
  height: 50px;
  margin-top: 18px;
  border: none;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  color: white;
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 10px 24px rgba(15, 76, 129, 0.22);
}

button:hover {
  transform: translateY(-1px);
  filter: brightness(1.03);
}

button:active {
  transform: translateY(0);
}

.oculto {
  display: none !important;
}

/* Usuario no encontrado */
.vista-usuario.error-usuario {
  background: linear-gradient(180deg, var(--danger-bg-1) 0%, var(--danger-bg-2) 100%);
  border-color: #fecaca;
}

.vista-usuario.error-usuario .nombre-usuario {
  color: var(--danger);
}

.vista-usuario.error-usuario .rol-usuario {
  color: var(--danger-2);
  text-transform: none;
  letter-spacing: normal;
  font-weight: 600;
}

/* Botón deshabilitado */
button:disabled {
  background: #94a3b8;
  cursor: not-allowed;
  box-shadow: none;
}

button:disabled:hover {
  transform: none;
  filter: none;
}

/* Animación aparición contraseña */
#seccionPassword {
  animation: fadeIn 0.35s ease-in-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Puntos del botón */
.btn-cargando::after {
  content: "";
  display: inline-block;
  width: 1.5em;
  text-align: left;
  animation: animacionPuntos 1.2s infinite;
}

@keyframes animacionPuntos {
  0% { content: ""; }
  25% { content: "."; }
  50% { content: ".."; }
  75%, 100% { content: "..."; }
}

/* Tablet */
@media (max-width: 768px) {
  .contenedor-login {
    padding: 18px;
  }

  .tarjeta-login {
    max-width: 430px;
    padding: 24px 22px;
    border-radius: 20px;
  }
}

/* Móvil */
@media (max-width: 600px) {
  .contenedor-login {
    padding: 14px;
  }

  .tarjeta-login {
    max-width: 100%;
    padding: 22px 16px;
    border-radius: 18px;
  }

  .cabecera-login h1 {
    font-size: 22px;
  }

  .cabecera-login p {
    font-size: 13px;
  }

  label {
    font-size: 13px;
    margin-top: 12px;
  }

  input {
    height: 44px;
    font-size: 14px;
    padding: 0 12px;
  }

  .vista-usuario {
    padding: 14px 12px;
    border-radius: 16px;
    min-height: 140px;
  }

  .foto-box {
    width: 68px;
    height: 68px;
  }

  .nombre-usuario {
    font-size: 15px;
  }

  .rol-usuario {
    font-size: 12px;
  }

  .estado-validacion {
    font-size: 13px;
    padding: 10px 12px;
  }

  button {
    height: 48px;
    font-size: 15px;
    border-radius: 12px;
  }
}

/* Móvil pequeño */
@media (max-width: 380px) {
  .tarjeta-login {
    padding: 18px 14px;
  }

  .cabecera-login h1 {
    font-size: 20px;
  }

  .foto-box {
    width: 62px;
    height: 62px;
  }

  .nombre-usuario {
    font-size: 14px;
  }
}