#cbn-v5-app { max-width: 1100px; margin: auto; font-family: 'Segoe UI', Tahoma, sans-serif; background: #f4f7f9; padding: 15px; }
.cbn-section { border: 1px solid #d1d1d1; background: #fff; margin-bottom: 25px; border-radius: 4px; box-shadow: 0 2px 5px rgba(0,0,0,0.05); }
.cbn-section legend { background: #004a80; color: white; padding: 5px 15px; border-radius: 3px; font-weight: bold; }

.cbn-row { display: flex; border-bottom: 1px solid #eee; align-items: center; min-height: 40px; }
.row-input { background: #fff; }
.row-calc { background: #fffde7; } /* Fond jaune Excel */
.orange { background: #fff3e0 !important; font-weight: bold; } /* Fond orange Excel */

.cbn-col-a { flex: 4; padding-left: 15px; font-size: 0.95em; }
.cbn-col-b { flex: 2; padding: 5px; }
.cbn-col-c { flex: 1; color: #777; font-size: 0.85em; }
.cbn-col-d { flex: 3; font-size: 0.8em; color: #888; border-left: 1px solid #f0f0f0; padding-left: 10px; }

.cbn-col-b input, .cbn-col-b select { width: 100%; border: 1px solid #ccc; padding: 4px; text-align: right; }

/* Mobile optimization */
@media (max-width: 768px) {
    .cbn-row { flex-wrap: wrap; padding: 10px; }
    .cbn-col-a { flex: 100%; font-weight: bold; margin-bottom: 5px; }
    .cbn-col-b { flex: 60%; }
    .cbn-col-c { flex: 40%; padding-left: 10px; }
    .cbn-col-d { flex: 100%; border-left: none; padding: 5px 0; border-top: 1px dashed #ddd; margin-top: 5px; }
}