/* Page « Sources & méthodologie » de l'observatoire — token-driven (--vefa-*). */
.datameth { background: var(--vefa-bg, #fff); color: var(--vefa-text, #1f2937); }
.datameth-container { max-width: 1080px; margin: 0 auto; padding: 0 1.25rem; }

/* Hero */
.datameth-hero {
    background: linear-gradient(135deg, rgba(52,152,219,0.08), rgba(255,64,0,0.05));
    border-bottom: 1px solid var(--vefa-border, #e5e7eb);
    padding: 3rem 0 2.5rem;
}
.datameth-overline {
    font-size: 0.8rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase;
    color: var(--vefa-primary, #3498db); margin: 0 0 0.6rem;
}
.datameth-overline i { margin-right: 0.35rem; }
.datameth-title { font-size: clamp(1.9rem, 4vw, 2.6rem); font-weight: 800; margin: 0 0 0.9rem; color: var(--vefa-text, #1f2937); }
.datameth-lead { max-width: 760px; font-size: 1.02rem; line-height: 1.7; color: var(--vefa-text-muted, #4b5563); margin: 0; }
.datameth-lead strong { color: var(--vefa-text, #1f2937); }

.datameth-h2 { font-size: 1.5rem; font-weight: 800; margin: 0 0 1.4rem; color: var(--vefa-text, #1f2937); }

/* Grille des sources */
.datameth-sources {
    display: grid; gap: 1.1rem; padding-top: 2.5rem; padding-bottom: 1rem;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
}
.datameth-card {
    background: #fff; border: 1px solid var(--vefa-border, #e5e7eb); border-radius: 14px;
    padding: 1.25rem 1.35rem; display: flex; flex-direction: column; gap: 0.7rem;
    box-shadow: 0 1px 2px rgba(16,24,40,0.04); transition: box-shadow .2s ease, transform .2s ease;
}
.datameth-card:hover { box-shadow: 0 8px 24px rgba(16,24,40,0.08); transform: translateY(-2px); }
.datameth-card__head { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; }
.datameth-card__theme {
    font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.03em;
    color: var(--vefa-primary, #3498db); background: rgba(52,152,219,0.1);
    padding: 0.22rem 0.6rem; border-radius: 999px;
}
.datameth-card__cadence { font-size: 0.74rem; color: var(--vefa-text-muted, #6b7280); font-weight: 600; white-space: nowrap; }
.datameth-card__cadence i { color: var(--vefa-primary, #3498db); margin-right: 0.25rem; }
.datameth-card__dataset { font-size: 1.05rem; font-weight: 700; margin: 0; color: var(--vefa-text, #1f2937); }
.datameth-card__meta { display: grid; grid-template-columns: 1fr 1fr; gap: 0.4rem 1rem; margin: 0; }
.datameth-card__meta div { display: flex; flex-direction: column; }
.datameth-card__meta dt { font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.03em; color: var(--vefa-text-muted, #9ca3af); }
.datameth-card__meta dd { font-size: 0.86rem; font-weight: 600; color: var(--vefa-text, #1f2937); margin: 0; }
.datameth-card__method { font-size: 0.86rem; line-height: 1.55; color: var(--vefa-text-muted, #4b5563); margin: 0; }
.datameth-card__link { font-size: 0.83rem; font-weight: 600; color: var(--vefa-primary, #3498db); text-decoration: none; margin-top: auto; }
.datameth-card__link i { font-size: 0.72rem; margin-right: 0.3rem; }
.datameth-card__link:hover { text-decoration: underline; }

/* Principes */
.datameth-principles { padding: 2.5rem 1.25rem; }
.datameth-principles__grid { display: grid; gap: 1.1rem; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.datameth-principle {
    background: var(--vefa-bg-muted, #f8fafc); border: 1px solid var(--vefa-border, #e5e7eb);
    border-radius: 12px; padding: 1.2rem;
}
.datameth-principle__icon {
    display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px;
    border-radius: 10px; background: rgba(52,152,219,0.12); color: var(--vefa-primary, #3498db);
    font-size: 1rem; margin-bottom: 0.7rem;
}
.datameth-principle h3 { font-size: 0.98rem; font-weight: 700; margin: 0 0 0.4rem; color: var(--vefa-text, #1f2937); }
.datameth-principle p { font-size: 0.85rem; line-height: 1.55; color: var(--vefa-text-muted, #4b5563); margin: 0; }

/* CTA */
.datameth-cta { text-align: center; padding: 2.5rem 1.25rem 3.5rem; }
.datameth-cta p { max-width: 640px; margin: 0 auto 1.4rem; color: var(--vefa-text-muted, #4b5563); line-height: 1.6; }
.datameth-cta__btn {
    display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.8rem 1.6rem;
    background: var(--vefa-accent, #ff4000); color: #fff; font-weight: 700; text-decoration: none;
    border-radius: 999px; transition: background .2s ease, transform .2s ease;
}
.datameth-cta__btn:hover { background: var(--vefa-accent-dark, #d93600); transform: translateY(-1px); color: #fff; }

@media (max-width: 640px) {
    .datameth-card__meta { grid-template-columns: 1fr; }
}