/* General page styling */
body {
  font-family: "Segoe UI", Verdana, Arial, sans-serif;
  background: linear-gradient(#5e5e5e, #303030);
  margin: 0;
  color: #111;
}

/* Logo banner */
.site-header {
  text-align: center;
  background-color: #444;
  padding: 10px 0;
  border-bottom: 2px solid #999;
}
.site-header img {
  max-width: 600px;
  height: auto;
}

/* Layout container */
.layout {
  display: flex;
  min-height: 100vh;
  background-color: #f0f0f0;
}

/* Sidebar */
.sidebar {
  width: 220px;
  background-color: #3a3a3a;
  color: white;
  padding: 1rem;
}
.sidebar h2 {
  font-size: 1rem;
  margin-top: 1.5rem;
  border-top: 1px solid #666;
  padding-top: 0.5rem;
}
.sidebar ul {
  list-style: none;
  padding: 0;
}
.sidebar li {
  margin: 0.3rem 0;
}
.sidebar a {
  color: #ddd;
  text-decoration: none;
  display: block;
  padding: 0.3rem 0.5rem;
  border-radius: 4px;
}
.sidebar a:hover {
  background-color: #575757;
  color: #fff;
}

/* Main content area */
.content {
  flex: 1;
  background-color: white;
  padding: 2rem;
  margin: 1rem;
  box-shadow: 0 0 5px rgba(0,0,0,0.2);
}
.content h1, .content h2, .content h3 {
  color: #222;
}

/* Footer */
.footer {
  text-align: center;
  color: #ccc;
  font-size: 0.8rem;
  padding: 1rem;
}

/* Responsive (mobile) */
@media (max-width: 800px) {
  .layout {
    flex-direction: column;
  }
  .sidebar {
    width: 100%;
  }
  .content {
    margin: 0;
    box-shadow: none;
  }
}