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

body {
  font-family: Arial, sans-serif;
  background: linear-gradient(135deg, #111, #222);
  color: #eee;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  background: rgba(0, 0, 0, 0.7);
  padding: 20px;
  text-align: center;
  border-bottom: 2px solid #444;
}

header h1 {
  font-size: 2rem;
  margin-bottom: 10px;
}

nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 20px;
}

nav a {
  text-decoration: none;
  color: #0ff;
  font-weight: bold;
  transition: color 0.3s;
}

nav a:hover {
  color: #fff;
}

main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  text-align: center;
}

footer {
  background: rgba(0, 0, 0, 0.8);
  text-align: center;
  padding: 10px;
  font-size: 0.9rem;
  border-top: 2px solid #444;
}