/**
 * O6 Toolkit - Reading Progress Bar
 */
#o6tk-progress-bar {
    position: fixed;
    z-index: var(--o6tk-pb-z, 9999);
    left: 0;
    right: 0;
    height: var(--o6tk-pb-height, 3px);
    background: var(--o6tk-pb-bg, transparent);
    pointer-events: none;
    transition: opacity 0.3s ease;
}
#o6tk-progress-bar[data-pos="top"] { top: 0; }
#o6tk-progress-bar[data-pos="bottom"] { bottom: 0; }
.o6tk-progress-bar__fill {
    height: 100%;
    width: 0%;
    background: var(--o6tk-pb-color, var(--o6tk-primary, #6366f1));
    will-change: width;
    transition: none;
}

@media (prefers-reduced-motion: reduce) {
    .o6tk-progress-bar__fill { transition: none; }
}

@media print {
    #o6tk-progress-bar { display: none !important; }
}