/* Base styles */
:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --light-bg: #f8f9fa;
    --dark-text: #212529;
    --light-text: #ffffff;
    --border-color: #dee2e6;
    --radius: 6px;
    --shadow: 0 .5rem 1rem rgba(0,0,0,.15);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--dark-text);
    background-color: var(--light-bg);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header styles */
header {
    text-align: center;
    padding: 2rem 0;
    margin-bottom: 2rem;
    background: white;
    border-bottom: 1px solid var(--border-color);
}

header h1 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

/* Navigation */
nav {
    background: white;
    padding: 1rem 0;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

nav ul {
    display: flex;
    justify-content: center;
    list-style: none;
}

nav li {
    margin: 0 1rem;
}

nav a {
    text-decoration: none;
    color: var(--dark-text);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    transition: all 0.3s ease;
}

nav a:hover, nav a.active {
    background-color: var(--primary-color);
    color: var(--light-text);
}

/* Main content */
main {
    background: white;
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

section {
    margin-bottom: 3rem;
}

h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}

h3 {
    color: var(--secondary-color);
    margin: 1.5rem 0 1rem;
}

h4 {
    margin: 1rem 0 0.5rem;
    color: var(--dark-text);
}

/* Lists */
ol, ul {
    margin: 1rem 0;
    padding-left: 2rem;
}

ol li, ul li {
    margin: 0.5rem 0;
}

/* Code formatting */
code {
    background-color: #f1f3f5;
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 85%;
    color: #d73a49;
}

pre {
    background-color: #f6f8fa;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1rem;
    overflow: auto;
    margin: 1rem 0;
}

pre code {
    background: none;
    padding: 0;
    color: inherit;
}

/* Links */
a {
    color: var(--primary-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Tip box */
.tip {
    background-color: #fff3cd;
    border-color: #ffeaa7;
    color: #856404;
    padding: 1rem;
    margin: 1.5rem 0;
    border: 1px solid transparent;
    border-radius: var(--radius);
}

tip > strong {
    color: #664d03;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem 0;
    color: var(--secondary-color);
    font-size: 0.9rem;
}

/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    main {
        padding: 1.5rem;
    }
    
    nav ul {
        flex-direction: column;
        align-items: center;
    }
    
    nav li {
        margin: 0.5rem 0;
    }
}

/* Make code blocks scrollable on small screens */
@media (max-width: 576px) {
    pre {
        overflow-x: auto;
    }
}