/* Gradient + particles background */
body {
  margin: 0;
  padding: 0;
  height: 100vh;
  background: linear-gradient(45deg, #fff, #ffb6c1, #f0e68c, #7fffd4, #1e90ff);
  background-size: 600% 600%;
  animation: gradient 10s ease infinite;
  font-family: 'Inter', sans-serif;
  overflow: hidden;
  position: relative;
}

@keyframes gradient {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

#particles-js {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

/* Login container */
.login-container {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0, 0, 0, 0.65);
  padding: 40px;
  border-radius: 15px;
  box-shadow: 0 0 25px rgba(0, 0, 0, 0.7);
  color: #fff;
  width: 90%;
  max-width: 400px;
  z-index: 1;
}

/* Logo */
.logo-img {
  max-width: 280px;
  display: block;
  margin: 0 auto 2rem;
}

/* Titolo */
.login-container h2 {
  margin-bottom: 25px;
  text-align: center;
  font-size: 24px;
  color: #ffffff;
}

/* Campi input */
.login-container input[type="text"],
.login-container input[type="password"] {
  width: 100%;
  padding: 12px 15px;
  margin: 10px 0;
  border: none;
  border-radius: 5px;
  background-color: rgba(255, 255, 255, 0.15);
  color: #fff;
  font-size: 16px;
  outline: none;
  transition: background-color 0.3s;
}

.login-container input[type="text"]::placeholder,
.login-container input[type="password"]::placeholder {
  color: #ccc;
}

.login-container input[type="text"]:focus,
.login-container input[type="password"]:focus {
  background-color: rgba(255, 255, 255, 0.25);
}

/* Checkbox "Ricordami" */
.login-container label {
  display: flex;
  align-items: center;
  font-size: 14px;
  margin-top: 10px;
}

.login-container input[type="checkbox"] {
  margin-right: 8px;
}

/* Pulsante di accesso */
.login-container button[type="submit"] {
  width: 100%;
  padding: 12px;
  background-color: #00aaff;
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 16px;
  font-weight: bold;
  margin-top: 20px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.login-container button[type="submit"]:hover {
  background-color: #007acc;
}

/* Toggle password */
.toggle-password {
  color: #fff;
  font-size: 18px;
  padding: 5px;
  position: absolute;
  right: 15px;
  top: 50%;
  transform: translateY(-50%);
  cursor: pointer;
}

/* Messaggi di errore e successo */
.error-message, .success-message {
  text-align: center;
  margin-bottom: 15px;
  font-weight: bold;
  padding: 10px;
  border-radius: 5px;
}

.error-message {
  color: #fff;
  background-color: #d9534f;
}

.success-message {
  color: #fff;
  background-color: #5cb85c;
}

/* Responsive */
@media (max-width: 480px) {
  .login-container {
    padding: 25px;
  }

  .login-container h2 {
    font-size: 20px;
  }
}