body {
  font-family: Arial, sans-serif;
  background-color: #0d0f14;
  color: #e8eaf0;
  margin: 0;
  padding: 0;
  min-height: 100vh;
}

header {
  background-color: #2c3e50;
  color: white;
  text-align: center;
  padding: 60px 20px;
}

header h1 {
  font-size: 3rem;
  margin-bottom: 8px;
  color: #e8c170;
  letter-spacing: 2px;
}

header h2 {
  font-size: 1.2rem;
  font-weight: normal;
  color: #aab;
  letter-spacing: 4px;
  text-transform: uppercase;
}

nav {
  background-color: #34495e;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  padding: 12px;
}

nav a {
  color: white;
  text-decoration: none;
  padding: 8px 20px;
  border-radius: 5px;
}

nav a:hover {
  background-color: #e8c170;
  color: #2c3e50;
}

main {
  max-width: 800px;
  margin: 40px auto;
  padding: 0 20px;
}

section {
  background-color: #1c2030;
  border-radius: 10px;
  padding: 30px;
  margin-bottom: 30px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

h3 {
  color: #e8c170;
  margin-bottom: 16px;
  font-size: 1.4rem;
}

h4 {
  color: #7eb8d4;
  margin-bottom: 8px;
  font-size: 1.1rem;
}

p {
  color: #c0c4d0;
  line-height: 1.7;
  margin-bottom: 16px;
}

.card {
  background-color: #0d0f14;
  border: 1px solid #2a3050;
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 16px;
}

.btn {
  display: inline-block;
  margin-top: 10px;
  padding: 10px 20px;
  background-color: #e8c170;
  color: #0d0f14;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
}

.btn:hover {
  background-color: #7eb8d4;
}

.btn.disabled {
  background-color: #555;
  color: #aaa;
  cursor: not-allowed;
}

footer {
  background-color: #141720;
  color: #aab;
  text-align: center;
  padding: 20px;
  font-size: 0.85rem;
  margin-top: 60px;
}