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

body {
  font-family: 'Courier New', Courier, monospace;
  background: #e0e0e0;
  color: #222;
  line-height: 1.6;
  padding: 0;
}
header {
  display: block;
  text-align: center;
  padding: 20px 0 10px 0;
  border-bottom: 3px double #333;
  background: #c0c0c0;
  border-radius: 0;
  box-shadow: 0 2px 8px #88888833;
}
.logo {
  font-weight: bold;
  font-size: 2rem;
  font-family: 'Times New Roman', Times, serif;
  color: #003399;
  text-shadow: 1px 1px 0 #fff, 2px 2px 0 #888;
  margin-bottom: 10px;
  animation: logo-flicker 2.5s infinite alternate;
}
nav {
  margin-top: 10px;
}
nav a {
  padding: 0 18px;
  margin: 0 5px;
  text-decoration: underline;
  color: #003399;
  font-weight: bold;
  font-family: 'Courier New', Courier, monospace;
  font-size: 1.1rem;
  border-right: 1px solid #888;
  transition: background 0.2s, color 0.2s, transform 0.2s, box-shadow 0.2s;
  position: relative;
}
nav a:last-child {
  border-right: none;
}
nav a:hover {
  background: #003399;
  color: #fff;
  transform: scale(1.1) rotate(-2deg);
  box-shadow: 0 2px 8px #00339955;
  text-decoration: none;
}
nav a::after {
  content: '';
  display: block;
  width: 0;
  height: 2px;
  background: #003399;
  transition: width 0.3s;
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
}
nav a:hover::after {
  width: 80%;
}
main {
  max-width: 700px;
  margin: 30px auto;
  background: #fff;
  border: 3px ridge #888;
  padding: 30px 40px;
  box-shadow: 0 0 20px #aaa;
}
.retro-section {
  margin-bottom: 30px;
  padding: 18px;
  border: 2px dashed #003399;
  background: #f8f8ff;
  border-radius: 8px;
  transition: box-shadow 0.3s, background 0.3s;
}
.retro-section:hover {
  box-shadow: 0 0 20px #00339988, 0 0 8px #888;
  background: #e6e6fa;
}
.retro-section h2 {
  font-family: 'Times New Roman', Times, serif;
  color: #003399;
  border-bottom: 1px solid #888;
  margin-bottom: 10px;
  padding-bottom: 3px;
  transition: color 0.3s, letter-spacing 0.3s;
}
.retro-section h2:hover {
  color: #ff6600;
  letter-spacing: 2px;
}
.retro-section ul {
  margin-left: 20px;
}
footer {
  text-align: center;
  padding: 12px 0;
  background: #c0c0c0;
  border-top: 3px double #333;
  font-family: 'Courier New', Courier, monospace;
  color: #003399;
  margin-top: 40px;
  font-size: 1rem;
  animation: footer-blink 3s infinite alternate;
}
@keyframes logo-flicker {
  0% { opacity: 1; text-shadow: 1px 1px 0 #fff, 2px 2px 0 #888; }
  90% { opacity: 1; text-shadow: 1px 1px 0 #fff, 2px 2px 0 #888; }
  95% { opacity: 0.7; text-shadow: 0 0 8px #fff, 0 0 16px #003399; }
  100% { opacity: 1; text-shadow: 1px 1px 0 #fff, 2px 2px 0 #888; }
}
@keyframes footer-blink {
  0%, 90% { color: #003399; }
  95%, 100% { color: #ff6600; }
}
/* Retro button style for future features */
.button-retro {
  font-family: 'Courier New', Courier, monospace;
  background: #c0c0c0;
  border: 2px outset #888;
  color: #003399;
  padding: 8px 20px;
  font-size: 1rem;
  margin: 10px 0;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
  box-shadow: 2px 2px 0 #888;
}
.button-retro:hover {
  background: #003399;
  color: #fff;
  box-shadow: 4px 4px 8px #00339955;
}