/* Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}

body {
  background: linear-gradient(135deg, #00545e, #000428);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

/* Contenedor principal */
.login-container {
  width: 100%;
  max-width: 400px;
}

/* Caja de login */
.login-box {
  background: #fff;
  border-radius: 12px;
  padding: 30px 25px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.2);
  text-align: center;
  animation: fadeIn 0.6s ease-in-out;
}

.logo img {
  width: 120px;
  margin-bottom: 15px;
}

h2 {
  margin-bottom: 20px;
  color: #333;
}

/* Inputs */
.input-group {
  text-align: left;
  margin-bottom: 15px;
}

.input-group label {
  display: block;
  font-size: 14px;
  color: #444;
  margin-bottom: 5px;
}

.input-group input {
  width: 100%;
  padding: 12px;
  border: 1px solid #bbb;
  border-radius: 8px;
  outline: none;
  font-size: 15px;
  transition: 0.2s;
}

.input-group input:focus {
  border-color: #004e92;
}

/* Botón */
.btn {
  width: 100%;
  padding: 14px;
  background: #004e92;
  color: #fff;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-weight: bold;
  font-size: 15px;
  transition: 0.3s;
}

.btn:hover {
  background: #006fc5;
}

/* Animación */
@keyframes fadeIn {
  from {opacity: 0; transform: translateY(-20px);}
  to {opacity: 1; transform: translateY(0);}
}

/* 📱 Responsive */
@media (max-width: 500px) {
  .login-box {
    padding: 20px 15px;
  }

  .logo img {
    width: 90px;
  }

  h2 {
    font-size: 18px;
  }

  .btn {
    padding: 12px;
    font-size: 14px;
  }
}

/* Avisos */
.alert {
  padding: 12px 14px;
  border-radius: 8px;
  font-size: 14px;
  line-height: 1.4;
  text-align: center;   /* Centrar texto */
  display: block;
  margin: 15px auto;    /* Centrar bloque dentro de la caja */
  max-width: 90%;       /* Que no ocupe todo el ancho */
}

.alert-error {
  background: #ffe6e6;  /* Fondo rojo claro */
  color: #b30000;       /* Texto rojo oscuro */
  /* borde eliminado para un look más limpio */
}

.btn {
  width: 100%;
  padding: 14px;
  background: #004e92;
  color: #fff;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-weight: bold;
  font-size: 15px;
  transition: 0.3s;
  text-decoration: none; /* 👈 aquí quitas la rayita */
}