* {
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body {
  margin: 0;
  background: #f4f6f9;
}

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

.sidebar {
  width: 260px;
  background: #0f172a;
  color: #fff;
  padding: 15px;
  overflow-y: auto;
}

.brand {
  font-size: 20px;
  font-weight: bold;
  margin-bottom: 15px;
}

.sidebar a {
  display: block;
  color: #cbd5e1;
  padding: 8px;
  text-decoration: none;
  border-radius: 6px;
  margin-bottom: 4px;
}

.sidebar a:hover,
.sidebar a.active {
  background: #1e293b;
  color: #fff;
}

.group-title {
  margin-top: 15px;
  font-size: 12px;
  text-transform: uppercase;
  color: #94a3b8;
}

.search-container input {
  width: 100%;
  padding: 6px;
  border-radius: 6px;
  border: none;
  margin-bottom: 10px;
}

.content {
  flex: 1;
  background: #fff;
}

iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* Dark mode */
.dark body {
  background: #020617;
}