body {
  margin: 0;
  font-family: Arial;
  background: #f4f4f4;
  color: #111;
}

.layout {
  display: flex;
  height: 100vh;
}

#sidebar {
  width: 240px;
  background: #1e1e1e;
  color: white;
  padding: 15px;
  box-sizing: border-box;
}

#sidebar h2 {
  margin-top: 0;
}

#search {
  width: 100%;
  padding: 8px;
  margin-bottom: 10px;
  border: none;
  outline: none;
}

#nav button {
  display: block;
  width: 100%;
  margin-bottom: 5px;
  padding: 8px;
  background: #333;
  color: white;
  border: none;
  cursor: pointer;
  text-align: left;
}

#nav button:hover {
  background: #555;
}

main {
  flex: 1;
  padding: 20px;
}

textarea, input {
  width: 100%;
  max-width: 900px;
  padding: 8px;
  margin-top: 5px;
}

button {
  padding: 6px 10px;
  margin-right: 5px;
  cursor: pointer;
}

pre {
  background: white;
  padding: 10px;
  border-radius: 5px;
  max-width: 900px;
  overflow-x: auto;
}

h1 {
  margin-top: 0;
}

/* Dark Mode */
body.dark {
  background: #1a1a1a;
  color: #f0f0f0;
}
body.dark main {
  background: #1a1a1a;
}
body.dark textarea,
body.dark input[type="text"],
body.dark input[type="search"] {
  background: #2a2a2a;
  color: #f0f0f0;
  border: 1px solid #444;
}
body.dark pre {
  background: #2a2a2a;
  color: #f0f0f0;
}
body.dark button {
  background: #444;
  color: #f0f0f0;
  border: 1px solid #666;
}
body.dark button:hover {
  background: #555;
}