main {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

.login-container {
  background: white;
  padding: 40px 30px;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 400px;
  box-sizing: border-box;
  margin: 0 auto;
  margin-top: 40px;
  margin-bottom: 40px;
}

.login-container h2 {
  text-align: center;
  margin-bottom: 25px;
  color: #333;
  font-size: 24px;
  border-bottom: 1px solid #eee;
  padding-bottom: 10px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: #444;
}

.form-group input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-size: 15px;
  box-sizing: border-box;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.form-group input:focus {
  border-color: #007bff;
  box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
  outline: none;
}

.btn {
  display: block;
  width: 100%;
  background: #007bff;
  color: white;
  padding: 12px 0;
  font-size: 16px;
  font-weight: 600;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.3s, transform 0.2s;
}

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

.btn:active {
  transform: translateY(0);
}

#error-box,
.error-box {
  background-color: #ffe0e0;
  color: #d8000c;
  border: 1px solid #d8000c;
  padding: 10px 15px;
  border-radius: 5px;
  margin-bottom: 15px;
  font-size: 14px;
  font-weight: 500;
  animation: fadeIn 0.3s ease-in-out;
}

@media (max-width: 910px) {
  .login-container {
    margin-top: -20px;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 991px) {
  main {
    margin-top: 120px;
  }
}