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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 3rem 2rem;
    text-align: center;
}

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

nav {
    margin-top: 1.5rem;
}

nav a {
    color: white;
    text-decoration: none;
    margin: 0 1rem;
    padding: 0.5rem 1rem;
    border: 2px solid white;
    border-radius: 5px;
    transition: background 0.3s;
}

nav a:hover {
    background: rgba(255, 255, 255, 0.2);
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
    min-height: 60vh;
}

footer {
    text-align: center;
    padding: 2rem;
    background: #f8f9fa;
    margin-top: 3rem;
    border-top: 2px solid #e9ecef;
}

footer p {
    margin: 0.5rem 0;
    color: #666;
}

.documentation {
    max-width: 900px;
}

section {
    margin: 2rem 0;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 10px;
}

section h3 {
    color: #667eea;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

section h4 {
    color: #667eea;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

pre {
    background: #2d2d2d;
    color: #f8f8f2;
    padding: 1.5rem;
    border-radius: 5px;
    overflow-x: auto;
    margin: 1rem 0;
}

code {
    font-family: "Courier New", Courier, monospace;
    font-size: 0.9em;
}

section ul, section ol {
    margin-left: 2rem;
    margin-top: 0.5rem;
}

section li {
    margin: 0.5rem 0;
}

a {
    text-decoration: none;
    font-weight: 600;
}

a:hover {
    text-decoration: underline;
}

p+p {
    margin-top: 1rem;
}

/** sticky footer **/
html, body {
  height: 100%;
  margin: 0;
}

body {
  display: flex;
  flex-direction: column;
}

main {
  flex: 1 0 auto;
}

footer {
  flex-shrink: 0;
}