root {
  --primary-color: #3498db;
  --secondary-color: #2c3e50;
  --accent-color: #e74c3c;
  --light-color: #ecf0f1;
  --dark-color: #2c3e50;
  --success-color: #27ae60;
}

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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #fafad2;
}

header {
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: black;
  text-align: center;
  padding: 2rem 0;
  margin-bottom: 2rem;
}

header h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

nav {
  background-color: var(--secondary-color);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

nav a {
  color: #1e90ff;
  text-decoration: none;
  padding: 0.5rem 1.5rem;
  margin: 0 0.5rem;
  border-radius: 4px;
  transition: background-color 0.3s;
}

nav a:hover {
  background-color: var(--primary-color);
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem 3rem;
}

section {
  background: white;
  border-radius: 8px;
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

h2 {
  color: var(--secondary-color);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--primary-color);
}

h3 {
  color: var(--primary-color);
  margin: 1.5rem 0 0.5rem;
}

pre {
  background-color: #f4f4f4;
  padding: 1rem;
  border-radius: 4px;
  overflow-x: auto;
  margin: 1rem 0;
  border-left: 4px solid var(--primary-color);
}

code {
  font-family: "Courier New", Courier, monospace;
  background-color: #f4f4f4;
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
}

ul,
ol {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
}

li {
  margin-bottom: 0.5rem;
}

.file-structure {
  background-color: #2c3e50;
  color: white;
  padding: 1rem;
  border-radius: 4px;
  font-family: "Courier New", Courier, monospace;
  margin: 1rem 0;
}

.folder {
  color: #3498db;
}

.file {
  color: #e74c3c;
}

.note {
  background-color: #fff8e1;
  border-left: 4px solid #ffc107;
  padding: 1rem;
  margin: 1rem 0;
  border-radius: 4px;
}

.warning {
  background-color: #ffebee;
  border-left: 4px solid #f44336;
  padding: 1rem;
  margin: 1rem 0;
  border-radius: 4px;
}

footer {
  text-align: center;
  padding: 2rem;
  background-color: var(--dark-color);
  color: white;
  margin-top: 2rem;
}

@media (max-width: 768px) {
  nav {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  nav a {
    margin: 0.25rem 0;
    display: block;
    width: 100%;
    text-align: center;
  }
}