* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Roboto', sans-serif;
  background: #0D1117;
  color: #FFFFFF;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  flex-direction: column;
}

header {
  text-align: center;
  margin-bottom: 30px;
}

header h1 {
  font-family: 'Orbitron', sans-serif;
  font-size: 3em;
  color: #00FFFF;
  text-transform: uppercase;
  letter-spacing: 3px;
  text-shadow:
    0 0 10px #00FFFF,
    0 0 20px #1E90FF;
  margin-bottom: 10px;
}

header p {
  font-size: 1.1em;
  color: #AAA;
}

.login-card {
  background: #111827;
  border: 2px solid #1E90FF;
  border-radius: 15px;
  padding: 2rem;
  width: 320px;
  text-align: center;
  box-shadow: 0 0 15px rgba(30, 144, 255, 0.3);
}

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

label {
  display: block;
  margin-bottom: 5px;
  color: #00FFFF;
  font-size: 0.9em;
}

input {
  width: 100%;
  padding: 10px;
  border: 1px solid #1E90FF;
  border-radius: 6px;
  background: #0D1117;
  color: #FFF;
}

input:focus {
  outline: none;
  border-color: #00FFFF;
  box-shadow: 0 0 10px #00FFFF;
}

.btn {
  width: 100%;
  padding: 10px;
  background: transparent;
  border: 2px solid #00FFFF;
  border-radius: 8px;
  color: #00FFFF;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.3s, color 0.3s;
}

.btn:hover {
  background: #00FFFF;
  color: #0D1117;
}

#message {
  margin-top: 15px;
  color: #FF5555;
  font-size: 0.9em;
}

footer {
  margin-top: 40px;
  font-size: 0.8em;
  color: #555;
}