/**
 * Skeleton Loading Animations — CSS Only
 * Usage: add class "skeleton" to any element, plus shape modifiers.
 *
 * Examples:
 *   <div class="skeleton skeleton-img"></div>         — image placeholder
 *   <span class="skeleton skeleton-text"></span>       — single line of text
 *   <span class="skeleton skeleton-text--short"></span>— short text (60%)
 *   <div class="skeleton skeleton-card"></div>         — full product card
 *   <div class="skeleton skeleton-btn"></div>          — button placeholder
 *   <div class="skeleton skeleton-avatar"></div>       — circular avatar
 */

/* ── Base Skeleton ── */
.skeleton {
    display: block;
    background: var(--skeleton-bg, #e0e0e0);
    border-radius: var(--skeleton-radius, 8px);
    position: relative;
    overflow: hidden;
    color: transparent !important;
    pointer-events: none;
    user-select: none;
}

.skeleton * {
    visibility: hidden;
}

/* ── Shimmer animation ── */
.skeleton::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg,
            transparent 0%,
            var(--skeleton-shine, #f5f5f5) 50%,
            transparent 100%);
    animation: shimmer var(--skeleton-duration, 1.5s) ease-in-out infinite;
    transform: translateX(-100%);
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }

    100% {
        transform: translateX(100%);
    }
}

/* ── Shape Modifiers ── */

/* Image placeholder */
.skeleton-img {
    width: 100%;
    aspect-ratio: 4 / 3;
    border-radius: var(--radius-lg, 12px) var(--radius-lg, 12px) 0 0;
}

.skeleton-img--square {
    aspect-ratio: 1 / 1;
}

/* Text lines */
.skeleton-text {
    display: block;
    height: 1rem;
    margin-bottom: 0.5rem;
    border-radius: var(--radius-sm, 4px);
    width: 100%;
}

.skeleton-text--short {
    width: 60%;
}

.skeleton-text--xs {
    height: 0.7rem;
    width: 40%;
}

/* Button placeholder */
.skeleton-btn {
    height: 42px;
    width: 100%;
    border-radius: var(--radius-md, 8px);
}

/* Circular avatar */
.skeleton-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full, 9999px);
    flex-shrink: 0;
}

/* ── Product Card Skeleton ── */
.skeleton-card {
    border-radius: var(--radius-xl, 16px);
    overflow: hidden;
    background: var(--white, #fff);
    border: 1px solid var(--gray-200, #e5e7eb);
}

.skeleton-card__img {
    width: 100%;
    height: 200px;
    background: var(--skeleton-bg, #e0e0e0);
    position: relative;
    overflow: hidden;
}

.skeleton-card__img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg,
            transparent 0%,
            var(--skeleton-shine, #f5f5f5) 50%,
            transparent 100%);
    animation: shimmer var(--skeleton-duration, 1.5s) ease-in-out infinite;
    transform: translateX(-100%);
}

.skeleton-card__body {
    padding: 1rem;
}

.skeleton-card__title {
    height: 1rem;
    background: var(--skeleton-bg, #e0e0e0);
    border-radius: 4px;
    margin-bottom: 0.75rem;
    width: 80%;
}

.skeleton-card__price {
    height: 0.9rem;
    background: var(--skeleton-bg, #e0e0e0);
    border-radius: 4px;
    width: 50%;
    margin-bottom: 0.5rem;
}

.skeleton-card__btn {
    height: 38px;
    background: var(--skeleton-bg, #e0e0e0);
    border-radius: var(--radius-md, 8px);
    margin-top: 0.75rem;
}

/* ── Responsive Adjustments ── */
@media (max-width: 575px) {
    .skeleton-card__img {
        height: 160px;
    }

    .skeleton-img {
        aspect-ratio: 1 / 1;
    }
}

/* ── Standalone shimmer (for JS-generated elements) ── */
.skeleton-shimmer {
    position: relative;
    overflow: hidden;
}

.skeleton-shimmer::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg,
            transparent 0%,
            var(--skeleton-shine, rgba(255, 255, 255, 0.6)) 50%,
            transparent 100%);
    animation: shimmer var(--skeleton-duration, 1.5s) ease-in-out infinite;
    transform: translateX(-100%);
}

/* ── Reduce motion ── */
@media (prefers-reduced-motion: reduce) {

    .skeleton::after,
    .skeleton-card__img::after,
    .skeleton-shimmer::after {
        animation: none;
    }
}