/* ==========================================================================
   Chomzx Animation Utilities
   AOS Custom Overrides + CSS Transition Definitions
   ========================================================================== */

/* --- AOS Custom Overrides --- */
[data-aos] {
    transition-timing-function: cubic-bezier(0.16, 1, 0.3, 1);
}

/* Slow down default AOS on premium elements */
[data-aos="fade-up"].aos-premium {
    transition-duration: 1000ms;
}

[data-aos="fade-in"] {
    opacity: 0;
    transition-property: opacity;
}

[data-aos="fade-in"].aos-animate {
    opacity: 1;
}

/* Modern scale-up entrance */
[data-aos="scale-up"] {
    opacity: 0;
    transform: scale(0.95);
    transition-property: opacity, transform;
}

[data-aos="scale-up"].aos-animate {
    opacity: 1;
    transform: scale(1);
}

/* Stagger delay utility classes */
[data-aos-delay="100"] { transition-delay: 100ms; }
[data-aos-delay="200"] { transition-delay: 200ms; }
[data-aos-delay="300"] { transition-delay: 300ms; }
[data-aos-delay="400"] { transition-delay: 400ms; }

/* --- Hover Transition Definitions --- */

/* Product card hover - modern lift */
.hover-lift {
    transform: translateY(0) translateZ(0);
    transition: transform var(--duration-normal, 0.35s) cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow var(--duration-normal, 0.35s) cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform;
    backface-visibility: hidden;
}

.hover-lift:hover {
    transform: translateY(-8px) translateZ(0);
    box-shadow: var(--shadow-card-hover, 0 16px 32px rgba(0, 0, 0, 0.1));
}

/* Image zoom on hover */
.hover-zoom {
    overflow: hidden;
}

.hover-zoom img {
    transform: scale(1) translateZ(0);
    transition: transform var(--duration-slow, 0.5s) cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform;
    backface-visibility: hidden;
}

.hover-zoom:hover img {
    transform: scale(1.06) translateZ(0);
}

/* Subtle opacity fade */
.hover-fade {
    transition: opacity var(--duration-fast, 0.2s) ease;
}

.hover-fade:hover {
    opacity: 0.85;
}

/* Button press effect */
.hover-press {
    transition: transform 0.15s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.hover-press:active {
    transform: scale(0.96);
}

/* Underline expand animation - modern centered */
.hover-underline {
    position: relative;
}

.hover-underline::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    border-radius: 1px;
    transition: width var(--duration-normal, 0.35s) cubic-bezier(0.16, 1, 0.3, 1),
                left var(--duration-normal, 0.35s) cubic-bezier(0.16, 1, 0.3, 1);
}

.hover-underline:hover::after {
    width: 100%;
    left: 0;
}

/* --- Page Transition --- */
.page-enter {
    animation: pageEnter 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes pageEnter {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Skeleton Loading Pulse --- */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--color-border-light) 25%,
        var(--color-border) 50%,
        var(--color-border-light) 75%
    );
    background-size: 200% 100%;
    animation: skeleton-pulse 1.5s ease-in-out infinite;
    border-radius: var(--border-radius);
}

@keyframes skeleton-pulse {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* --- Back to Top Button --- */
.back-to-top {
    position: fixed;
    bottom: var(--space-8);
    right: var(--space-8);
    z-index: var(--z-back-to-top, 90);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--color-primary);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: none;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateY(16px);
    transition: opacity var(--duration-normal, 0.35s) ease,
                visibility var(--duration-normal, 0.35s) ease,
                transform var(--duration-normal, 0.35s) cubic-bezier(0.16, 1, 0.3, 1),
                background-color var(--duration-fast, 0.2s) ease;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background-color: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.back-to-top.visible:hover {
    transform: translateY(-2px);
}

.back-to-top svg {
    width: 20px;
    height: 20px;
}

/* --- Reduced Motion Preference --- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    [data-aos] {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }

    .back-to-top {
        transition: none !important;
    }
}