/* QuantityStepper — reusable −/n/+ control */
.qty-stepper {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}
.qty-stepper-btn {
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 0;
    background: var(--surface-tertiary);
    color: var(--text-primary);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast), box-shadow var(--transition-fast);
}
.qty-stepper-btn:hover:not(:disabled) {
    background: var(--color-primary);
    color: var(--button-primary-text, #06120b);
    box-shadow: 0 0 6px var(--neon-glow);
}
.qty-stepper-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}
.qty-stepper-value {
    min-width: 24px;
    text-align: center;
    font-variant-numeric: tabular-nums;
    color: var(--text-primary);
}
.qty-stepper--nonzero .qty-stepper-value {
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
}