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

body {
  background: #000;
  color: #f8ffec;
  font-family: monospace;
  line-height: 1.6;
  display: flex;
  min-height: 100vh;
}

nav {
  width: 220px;
  min-width: 220px;
  background: #0a0a0a;
  border-right: 1px solid #1a2a2e;
  padding: 1.5rem 1rem;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

nav a.nav-title {
  font-size: 0.95rem;
  font-weight: bold;
  color: rgba(68, 142, 162, 0.9);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid #1a2a2e;
}

nav a.nav-title:hover {
  background: none;
  text-decoration: underline;
}

nav a {
  display: block;
  color: #f8ffec;
  text-decoration: none;
  padding: 0.35rem 0.5rem;
  font-size: 0.85rem;
  border-radius: 3px;
  transition: background 0.15s;
}

nav a:hover,
nav a.active {
  background: #1a2a2e;
  color: rgba(68, 142, 162, 0.9);
}

main {
  flex: 1;
  max-width: 860px;
  padding: 2rem 2.5rem;
}

h1, h2, h3, h4 {
  color: rgba(68, 142, 162, 0.9);
  margin-top: 1.5em;
  margin-bottom: 0.5em;
}

h1 { font-size: 1.6rem; }
h2 { font-size: 1.3rem; }
h3 { font-size: 1.1rem; }

p {
  margin-bottom: 0.8em;
}

a {
  color: rgba(68, 142, 162, 0.9);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

ul, ol {
  margin: 0.5em 0 1em 1.5em;
}

li {
  margin-bottom: 0.3em;
}

img {
  max-width: 100%;
  height: auto;
  margin: 0.5em 0;
}

table {
  border-collapse: collapse;
  margin: 1em 0;
  width: auto;
  font-size: 0.85rem;
}

th, td {
  border: 1px solid #1a2a2e;
  padding: 0.45rem 0.75rem;
  text-align: left;
}

th {
  background: #0a0a0a;
  color: rgba(68, 142, 162, 0.9);
  font-weight: bold;
}

tr:nth-child(even) {
  background: rgba(10, 10, 10, 0.5);
}

code {
  background: #0a0a0a;
  padding: 0.15em 0.4em;
  border-radius: 3px;
  font-size: 0.9em;
}

pre {
  background: #0a0a0a;
  border: 1px solid #1a2a2e;
  padding: 1em;
  overflow-x: auto;
  margin: 1em 0;
  border-radius: 3px;
}

pre code {
  padding: 0;
  background: none;
}

strong {
  color: #fff;
}

@media (max-width: 768px) {
  body {
    flex-direction: column;
  }

  nav {
    width: 100%;
    min-width: unset;
    height: auto;
    position: static;
    border-right: none;
    border-bottom: 1px solid #1a2a2e;
    padding: 1rem;
  }

  nav a {
    display: inline-block;
    margin-right: 0.5rem;
  }

  main {
    padding: 1.5rem 1rem;
  }
}