:root {
    --bg-color: #ffffff;
    --text-color: #333333;
    --accent-color: #2e7d32;
    --spacing: 1.5rem;
}
@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #121212;
        --text-color: #e0e0e0;
        --accent-color: #81c784;
    }
}
body {
    font-family: system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    margin: 0;
    padding: var(--spacing);
    max-width: 800px;
    margin: 0 auto;
}
header, footer {
    padding: var(--spacing) 0;
    border-bottom: 1px solid #ccc;
}
footer { border-bottom: none; border-top: 1px solid #ccc; }
nav a { margin-right: 1rem; color: var(--accent-color); text-decoration: none; display: inline-block; padding: 12px 0; min-width: 44px; }
h1, h2 { color: var(--accent-color); }
form { margin: var(--spacing) 0; }
input { padding: 12px; border: 1px solid #ccc; width: 100%; max-width: 300px; display: block; margin-bottom: 1rem; }
button { padding: 12px 24px; background: var(--accent-color); color: #fff; border: none; cursor: pointer; min-height: 44px; }
textarea { width: 100%; height: 100px; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }