/* General */




/* Tarjeta de login */
.login-card {
  position: relative;
  z-index: 1;
  background: #ffffff;
  border-radius: 15px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  padding: 2.5rem;
  width: 100%;
  max-width: 400px;
  animation: fadeIn 0.8s ease;
}

.login-card h3 {
  font-weight: 600;
  color: #0d6efd;
  text-align: center;
  margin-bottom: 1.5rem;
}

.form-control {
  border-radius: 10px;
  padding-left: 40px;
}

.btn-primary {
  border-radius: 10px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-primary:hover {
  background: #0056b3;
  transform: translateY(-2px);
}

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

/* Footer */
footer {
  margin-top: auto;
  background: linear-gradient(90deg, #007bff, #0056b3);
  color: white;
  text-align: center;
  padding: 12px 0;
  font-size: 0.9rem;
  box-shadow: 0 -3px 10px rgba(0, 0, 0, 0.1);
  position: relative;
  z-index: 2;
}

footer a {
  color: #e9e9e5;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

/* ======================= */
/* 🌙 MODO OSCURO AUTOMÁTICO */
/* ======================= */
@media (prefers-color-scheme: dark) {
  body {
    background: linear-gradient(180deg, #0a1931 0%, #0c2e4e 100%);
    color: #f1f1f1;
  }

  .wave-background {
    opacity: 0.2;
  }

  .login-card {
    background: #1c1f26;
    color: #f1f1f1;
    box-shadow: 0 5px 20px rgba(255, 255, 255, 0.1);
  }

  .login-card h3 {
    color: #66b2ff;
  }

  .form-control {
    background: #2a2d35;
    border: 1px solid #3a3f47;
    color: #fff;
  }

  .form-control::placeholder {
    color: #ccc;
  }

  .btn-primary {
    background: #007bff;
    border: none;
  }

  .btn-primary:hover {
    background: #339cff;
  }

  footer {
    background: linear-gradient(90deg, #0c2e4e, #093459);
  }

  footer a {
    color: #ffdd57;
  }
}