/* Animations CSS for "Apple-level" feel */

/* Initial state for elements that will be revealed */
.reveal-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.5, 0, 0, 1), transform 0.8s cubic-bezier(0.5, 0, 0, 1);
    will-change: opacity, transform;
}

.reveal-fade {
    opacity: 0;
    transition: opacity 1s cubic-bezier(0.5, 0, 0, 1);
    will-change: opacity;
}

.reveal-scale {
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.8s cubic-bezier(0.5, 0, 0, 1), transform 0.8s cubic-bezier(0.5, 0, 0, 1);
    will-change: opacity, transform;
}

/* Active states added via JS */
.reveal-up.active {
    opacity: 1;
    transform: translateY(0);
}

.reveal-fade.active {
    opacity: 1;
}

.reveal-scale.active {
    opacity: 1;
    transform: scale(1);
}

/* Header sticky animation */
@keyframes slideDown {
    from { transform: translateY(-100%); }
    to { transform: translateY(0); }
}

.header.scrolled {
    animation: slideDown 0.3s ease forwards;
}

/* Micro-interactions */
.btn-primary, .action-btn, .category-item, .part-card, .brand-logo {
    /* Ensure elements don't pop abruptly when hovered after being animated */
    backface-visibility: hidden;
}