/**
 * Couleurs officielles Riverco — référencer ces variables plutôt que des hex ad hoc.
 */
:root {
    --riverco-blue: #0b5cab;
    --riverco-blue-hover: #084a8f;
    --riverco-blue-dark: #0a4c8f;
    --riverco-blue-light: #3d9eef;
    --riverco-blue-muted-bg: #e8f2fc;
    --riverco-blue-soft-bg: #f8fbff;
    --riverco-blue-border: #dbeafe;
    --riverco-blue-ring: rgba(11, 92, 171, 0.35);
}