html { scroll-behavior: smooth; }
body {
  font-family: 'Courier New', monospace;
  margin: 0;
  padding: 0;
  background: #000;
  color: #fff;
  position: relative;
  min-height: 100vh;
}
/* Animated starfield background */
#starfield {
  position: fixed;
  top: 0; left: 0; width: 100vw; height: 100vh;
  z-index: 0;
  pointer-events: none;
}
header, nav, main, section, footer {
  position: relative;
  z-index: 1;
}
header {
  background: #111;
  padding: 1em 0 0.5em 0;
  text-align: center;
}
header h1 {
  margin: 0;
  font-size: 2.2rem;
  color: #fff;
  text-shadow: 2px 2px #000;
}
nav {
  background: #222;
  padding: 0.5em 0;
  text-align: center;
}
nav a {
  color: #fff;
  margin: 0 1em;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1rem;
  transition: color 0.2s;
}
nav a:focus, nav a:hover {
  color: #fff;
  outline: 2px solid #fff;
  outline-offset: 2px;
}
main {
  padding: 2em 1em 4em 1em;
  max-width: 900px;
  margin: 0 auto;
}
section {
  margin-bottom: 2.5em;
  background: rgba(128,128,128,0.15);
  border-radius: 8px;
  padding: 1.5em 1em;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
section h2 {
  color: #fff;
  margin-top: 0;
}
.contact-link { color: #fff; }
footer {
  background: #111;
  color: #aaa;
  text-align: center;
  padding: 1em 0;
  position: fixed;
  width: 100%;
  bottom: 0;
  left: 0;
  z-index: 100;
}
/* Back to Top button */
#backToTop {
  position: fixed;
  bottom: 2.5em;
  right: 2em;
  z-index: 200;
  display: none;
  background: #111;
  color: #fff;
  border: none;
  padding: 0.7em 1.1em;
  border-radius: 50%;
  box-shadow: 0 2px 8px #000;
  cursor: pointer;
  font-size: 1.5em;
}
/* Floating sublink menu styles for all screens */
#sublinkMenuBtn {
  position: fixed;
  top: 2em;
  right: 1.2em;
  z-index: 300;
  background: #232323;
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 54px;
  height: 54px;
  font-size: 2em;
  box-shadow: 0 2px 8px #0006;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}
#sublinkMenuBtn:focus, #sublinkMenuBtn:hover {
  background: #fff;
  color: #232323;
}
#sublinkMenu {
  display: none;
  flex-direction: column;
  position: fixed;
  top: 5.5em;
  right: 1.2em;
  background: #181818ee;
  border-radius: 14px;
  box-shadow: 0 4px 16px #000a;
  z-index: 301;
  min-width: 180px;
  padding: 0.7em 0.5em;
  gap: 0.3em;
  animation: fadeIn 0.2s;
}
#sublinkMenu.show {
  display: flex;
}
#sublinkMenu a {
  color: #fff;
  background: #232323;
  border-radius: 8px;
  padding: 0.7em 1em;
  text-decoration: none;
  font-size: 1.08rem;
  margin: 0.1em 0;
  transition: background 0.2s, color 0.2s;
  text-align: left;
}
#sublinkMenu a:focus, #sublinkMenu a:hover {
  background: #fff;
  color: #232323;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@media (max-width: 600px) {
  header h1 { font-size: 1.3rem; }
  main { padding: 1em 0.5em 4em 0.5em; }
  nav {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    background: #181818;
    box-shadow: 0 2px 8px #0004;
    border-radius: 0 0 12px 12px;
    margin: 0 0.5em;
    padding: 0.5em 0.5em;
  }
  nav a {
    font-size: 1.1rem;
    margin: 0.3em 0;
    padding: 0.9em 1em;
    background: #232323;
    border-radius: 8px;
    box-shadow: 0 1px 4px #0002;
    transition: background 0.2s, color 0.2s;
    display: block;
  }
  nav a:focus, nav a:hover {
    background: #fff;
    color: #181818;
    outline: none;
  }
  section { padding: 1em 0.5em; }
  /* Example sublink style for mobile */
  .nav-sublinks {
    display: flex;
    flex-direction: column;
    margin: 0.2em 0 0.7em 1.2em;
    gap: 0.2em;
  }
  .nav-sublinks a {
    background: #333;
    color: #fff;
    font-size: 0.98rem;
    padding: 0.6em 1em;
    border-radius: 6px;
    margin: 0.1em 0;
    box-shadow: none;
  }
  .nav-sublinks a:focus, .nav-sublinks a:hover {
    background: #fff;
    color: #181818;
  }
}
/* Always allow scrolling on mobile */
@media (max-width: 600px) {
  html, body { overflow: auto !important; }
}