body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: #0b1020;
    color: #f5f5f5;
}

/* Ancien header ignoré, on utilise maintenant .site-header */
/* (on laisse ce bloc si tu veux, mais il ne sert plus) */
header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid #1f2937;
    background: #020617;
}

/* Mise en page principale */

main {
    max-width: 1250px;
    margin: 2rem auto 3rem;
    padding: 0 1.5rem;
}

h1 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: #9ca3af;
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

/* Grille des colonnes */

.grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
}

.col {
    background: radial-gradient(circle at top left, #111827 0, #020617 60%);
    border-radius: 0.8rem;
    border: 1px solid #1f2937;
    padding: 1rem 1rem 1.2rem;
}

.col h2 {
    margin-top: 0;
    font-size: 1rem;
    margin-bottom: 0.8rem;
    color: #e5e7eb;
}

/* Listes & liens */

ul {
    list-style: none;
    padding-left: 0;
    margin: 0;
    font-size: 0.9rem;
}

li + li {
    margin-top: 0.35rem;
}

.logo {
    width: 22px;
    height: 22px;
    object-fit: cover;
    border-radius: 4px;
    vertical-align: middle;
    margin-right: 8px;
}

a.link {
    color: #7dd3fc;
    text-decoration: none;
    word-break: break-all;
}

a.link:hover {
    text-decoration: underline;
}

/* Grille responsive */

@media (max-width: 1100px) {
    .grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 700px) {
    .grid {
        grid-template-columns: 1fr;
    }
}

/* ===== Bandeau POPARNASSUS (global, comme les autres pages) ===== */

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    width: 100%;
    height: 72px;
    background: rgba(2, 6, 23, 0.98);
    border-bottom: 1px solid rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(14px);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
}

.site-title {
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.35em;
    font-size: 0.8rem;
    font-weight: 700;
    color: #7dd3fc;
    padding: 0.6rem 1.4rem;
    border-radius: 999px;
    border: 1px solid rgba(56, 189, 248, 0.6);
    background: radial-gradient(circle at 30% 0, #0ea5e9, #1e293b 60%);
    box-shadow: 0 0 25px rgba(56, 189, 248, 0.7);
    text-align: center;
    display: inline-block;
}

.site-title:hover {
    color: #f9fafb;
    border-color: rgba(125, 211, 252, 0.9);
}