/* Header Styles */
.site-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #000;
}

.logo {
    width: 60px;
    height: 60px;
    background: #000;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
}

.logo-text {
    color: #fff;
    font-weight: bold;
    line-height: 1;
    font-size: 14px;
}

.site-title {
    font-size: 1.8em;
    font-weight: bold;
    margin: 0;
}

/* Footer Styles */
.site-footer {
    margin-top: 60px;
    padding-top: 20px;
    border-top: 1px solid #000;
    text-align: center;
    font-size: 0.9em;
}

/* Link Styles - Option 1: Subtle Dotted Underline */
a {
    color: #000;
    text-decoration: none;
    border-bottom: 1px dotted #666;
    transition: border-bottom 0.2s ease;
}

a:hover {
    border-bottom: 1px solid #000;
}

.site-footer a {
    color: #000;
    text-decoration: none;
    border-bottom: 1px dotted #666;
    transition: border-bottom 0.2s ease;
}

.site-footer a:hover {
    border-bottom: 1px solid #000;
}

/* Base Styles */
body {
    font-family: 'Courier New', Courier, monospace;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    color: #000;
    background: #fff;
    box-sizing: border-box;
}

h2, h3, h4 {
    border-bottom: 1px solid #000;
    padding-bottom: 5px;
    margin-top: 1.5em;
}

.charge {
    font-style: italic;
    background: #f5f5f5;
    padding: 20px 15px;
    border-left: 3px solid #000;
    margin: 25px 0;
    line-height: 1.7;
}

ul, ol {
    padding-left: 25px;
}

li {
    margin: 12px 0;
}

.equation {
    font-weight: bold;
    text-align: center;
    margin: 20px 0;
    padding: 15px 10px;
    background: #f9f9f9;
    border: 1px solid #eee;
}

/* Enhanced mobile responsiveness */
@media (max-width: 600px) {
    body {
        padding: 15px;
        font-size: 16px;
    }
    
    .site-header {
        gap: 15px;
        margin-bottom: 25px;
    }
    
    .logo {
        width: 50px;
        height: 50px;
    }
    
    .logo-text {
        font-size: 12px;
    }
    
    .site-title {
        font-size: 1.4em;
    }
    
    h2 {
        font-size: 1.4em;
    }
    
    .charge {
        margin: 20px -5px;
        padding: 15px 10px;
    }
    
    ul, ol {
        padding-left: 20px;
    }

    .site-footer {
        margin-top: 40px;
        font-size: 0.8em;
    }
}

/* Very small devices */
@media (max-width: 400px) {
    body {
        padding: 12px;
    }
    
    .site-header {
        gap: 12px;
    }
    
    .logo {
        width: 45px;
        height: 45px;
    }
    
    .logo-text {
        font-size: 11px;
    }
    
    .site-title {
        font-size: 1.2em;
    }
    
    h2 {
        font-size: 1.3em;
    }
}