/* Green City Index - About/Methodology Page */

:root {
    --color-green-dark: #1a3a17;
    --color-green: #2d5a27;
    --color-green-light: #4a8c3f;
    --color-bg: #fafafa;
    --color-text: #333;
    --color-text-light: #666;
    --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
}

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

/* Override flex layout from style.css for content pages */
main.container {
    display: block;
    overflow: auto;
    font-family: var(--font-main);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

main h1 {
    font-size: 2.5rem;
    color: var(--color-green-dark);
    margin-bottom: 2rem;
    font-weight: 400;
}

.section {
    margin-bottom: 3rem;
}

h2 {
    font-size: 1.5rem;
    color: var(--color-green-dark);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--color-green-light);
}

h3 {
    font-size: 1.1rem;
    color: var(--color-green);
    margin: 1.5rem 0 0.75rem;
}

p {
    margin-bottom: 1rem;
}

ul {
    margin: 1rem 0 1rem 1.5rem;
}

li {
    margin-bottom: 0.5rem;
}

a {
    color: var(--color-green);
}

/* Formula Box */
.formula {
    background: #f0f4ef;
    border-left: 4px solid var(--color-green);
    padding: 1rem 1.5rem;
    margin: 1rem 0;
    font-family: 'Courier New', monospace;
    font-size: 1.1rem;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

th, td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

th {
    background: #f0f4ef;
    color: var(--color-green-dark);
    font-weight: 600;
}

tr:hover {
    background: #f9f9f9;
}

/* Footer */
.footer {
    background: #222;
    color: #aaa;
    padding: 2rem;
    margin-top: 3rem;
    text-align: center;
}

.footer p {
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.footer a {
    color: #ccc;
}

/* Mobile */
@media (max-width: 768px) {
    .nav {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-links a {
        margin-left: 0;
        margin-right: 1rem;
    }
    
    .container {
        padding: 1rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    table {
        font-size: 0.875rem;
    }
    
    th, td {
        padding: 0.5rem;
    }
}