@keyframes fadeSlideIn {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

body {
  font-family: Arial, sans-serif;
  background: linear-gradient(135deg, #0f0f0f, #1a1a1a);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  color: #fff;
}

.login-container {
  background-color: #1e1e1e;
  padding: 40px 30px;
  border-radius: 10px;
  box-shadow: 0 0 20px rgba(255, 0, 0, 0.6);
  width: 500px;
  text-align: center;
  position: relative;
  animation: fadeSlideIn 0.8s ease-out forwards;
  opacity: 0;
}

.login-container::after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 5px;
  background: red;
  box-shadow: 0 0 20px red, 0 0 40px red, 0 0 60px red;
  border-radius: 5px;
}

h2 {
  margin-bottom: 25px;
  font-size: 26px;
}

form {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
}

input {
  width: 80%;
  padding: 10px;
  background-color: #2b2b2b;
  border: 1px solid #444;
  border-radius: 5px;
  color: #fff;
  font-size: 15px;
  transition: box-shadow 0.3s ease, transform 0.2s ease;
}

input::placeholder {
  color: #aaa;
}

input:focus {
  outline: none;
  box-shadow: 0 0 10px rgba(255, 0, 0, 0.6);
  transform: scale(1.02);
}

button {
  width: 80%;
  padding: 10px;
  background-color: #ff1a1a;
  border: none;
  color: white;
  border-radius: 5px;
  cursor: pointer;
  font-size: 15px;
  transition: background-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
}

button:hover {
  background-color: #e60000;
  box-shadow: 0 0 10px red, 0 0 20px red;
  transform: scale(1.03);
}

#error-message {
  color: #ff4d4d;
  margin-top: 10px;
}