/* 
   Low-Web.fr - Feuille de style frugale
   Zéro dépendance, performance maximale.
*/

:root {
    --bg-color: #fdfdfc;
    --text-color: #2c3e50;
    --heading-color: #1a1a1a;
    --accent-color: #34495e;
    --border-color: #e0e0e0;
    --max-width: 720px;
}

* {
    box-sizing: border-box;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: "Georgia", "Times New Roman", Times, serif;
    line-height: 1.6;
    margin: 0;
    padding: 2rem 1rem;
    font-size: 1.1rem;
}

header, main, footer {
    max-width: var(--max-width);
    margin: 0 auto;
}

header {
    border-bottom: 2px solid var(--heading-color);
    margin-bottom: 3rem;
    padding-bottom: 1rem;
}

h1, h2, h3 {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--heading-color);
    line-height: 1.2;
}

h1 {
    font-size: 2.5rem;
    margin: 0;
    letter-spacing: -0.02em;
}

.subtitle {
    font-style: italic;
    color: var(--accent-color);
    margin-top: 0.5rem;
}

h2 {
    font-size: 1.8rem;
    margin-top: 3rem;
    border-left: 4px solid var(--heading-color);
    padding-left: 1rem;
}

h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

p {
    margin-bottom: 1.5rem;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

article {
    padding: 1rem;
    background: #fff;
    border: 1px solid var(--border-color);
}

ul {
    padding-left: 1.2rem;
}

li {
    margin-bottom: 0.5rem;
}

blockquote {
    margin: 4rem 0;
    padding: 2rem;
    background-color: #f9f9f9;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    font-style: italic;
    text-align: center;
}

cite {
    display: block;
    margin-top: 1rem;
    font-size: 0.9rem;
    font-style: normal;
    color: var(--accent-color);
}

footer {
    margin-top: 5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
    color: #7f8c8d;
    text-align: center;
}

@media (max-width: 600px) {
    body {
        padding: 1rem;
    }
    
    h1 {
        font-size: 2rem;
    }
}