/* Base styles */
body {
    margin: 0;
    padding: 0;
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f8f8;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

/* Header and Footer */
header, footer {
    text-align: center;
    padding: 20px 0;
    border-bottom: 1px solid #ddd;
}

footer {
    border-top: 1px solid #ddd;
    border-bottom: none;
    margin-top: 40px;
    font-size: 0.9em;
    color: #666;
}

/* Navigation */
nav {
    margin-top: 15px;
}

nav a {
    margin: 0 15px;
    color: #1a5f7a;
    font-weight: bold;
}

/* Current page in navigation */
nav a.current-page {
    text-decoration: none;
    color: #333;
    cursor: default;
}

/* Main content */
main {
    padding: 40px 0;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: Verdana, Geneva, sans-serif;
    margin-top: 0.0em;
    margin-bottom: 0.5em;
    color: #2c3e50;
}

h1 {
    font-size: 1.5em;
}

p {
    margin-bottom: 1em;
}

/* Links */
a {
    color: #1a5f7a;
}

/* Lists */
ul, ol {
    margin-bottom: 1em;
    padding-left: 30px;
}

/* Code */
code {
    font-family: "Courier New", Courier, monospace;
    background-color: #f0f0f0;
    padding: 2px 4px;
    border-radius: 3px;
}

/* Images */
img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 20px auto;
}

/* Figures and captions */
figure {
    margin: 20px 0;
    text-align: center;
}

figcaption {
    font-style: italic;
    font-size: 0.9em;
    margin-top: 10px;
    color: #666;
}

/* Logo */
.logo {
    font-size: 1.5em;
    font-weight: bold;
    color: #2c3e50;
}

/* Responsive design */
@media (max-width: 600px) {
    body {
        padding: 10px;
    }
    
    nav a {
        display: block;
        margin: 10px 0;
    }
}