/* ═══════════════════════════════════════════════════════
   Ayak Loading System — shared CSS module
   Covers: spinner, button loading, skeleton, overlay,
   page-transition bar, HTMX indicator, icon animations.
   RTL-aware + dark-mode ready.
   ═══════════════════════════════════════════════════════ */

/* ── Design Tokens ── */
:root {
    --ayak-loading-bg: #f0f0f0;
    --ayak-loading-shine: #e8e8e8;
    --ayak-loading-overlay: rgba(255, 255, 255, 0.6);
    --ayak-loading-spinner: var(--ayak-primary, #1c3966);
    --ayak-loading-bar: var(--ayak-primary, #1c3966);
}

/* Dark mode tokens (admin) */
body.dark-mode {
    --ayak-loading-bg: #1a2540;
    --ayak-loading-shine: #1e2d4a;
    --ayak-loading-overlay: rgba(19, 28, 46, 0.7);
    --ayak-loading-spinner: var(--status-success, #34d399);
    --ayak-loading-bar: var(--status-success, #34d399);
}


/* ═══════════════════════════════════════════════════════
   1. INLINE SPINNER
   Used on: heart icon, compare icon, small inline areas.
   Rotation is direction-independent — no RTL fix needed.
   ═══════════════════════════════════════════════════════ */

.ayak-spinner {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2px solid var(--ayak-loading-bg);
    border-top-color: var(--ayak-loading-spinner);
    border-radius: 50%;
    animation: ayak-spin 0.7s linear infinite;
    vertical-align: middle;
    flex-shrink: 0;
}

.ayak-spinner--sm {
    width: 14px;
    height: 14px;
    border-width: 1.5px;
}

.ayak-spinner--lg {
    width: 28px;
    height: 28px;
    border-width: 3px;
}

@keyframes ayak-spin {
    to { transform: rotate(360deg); }
}

/* Accessibility: announced to screen readers */
.ayak-spinner[role="status"]::after {
    content: 'در حال بارگذاری…';
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}


/* ═══════════════════════════════════════════════════════
   2. BUTTON LOADING STATE
   Used on: add-to-cart, wishlist toggle, compare, vote, etc.
   Prevents double-submit via disabled + pointer-events.
   Width is preserved to avoid layout shift.
   ═══════════════════════════════════════════════════════ */

.btn-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.75;
    /* preserve width to prevent layout shift */
    min-width: fit-content;
}

.btn-loading .btn-text {
    visibility: hidden;
}

.btn-loading .ayak-spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}


/* ═══════════════════════════════════════════════════════
   3. SKELETON (content placeholder)
   Used on: product grid, listing pages.
   Shimmer direction is RTL-aware via [dir="rtl"].
   ═══════════════════════════════════════════════════════ */

.ayak-skeleton {
    background: linear-gradient(
        90deg,
        var(--ayak-loading-bg) 25%,
        var(--ayak-loading-shine) 50%,
        var(--ayak-loading-bg) 75%
    );
    background-size: 200% 100%;
    animation: ayak-shimmer 1.5s ease-in-out infinite;
    border-radius: 6px;
}

/* RTL: reverse shimmer direction */
[dir="rtl"] .ayak-skeleton {
    background: linear-gradient(
        270deg,
        var(--ayak-loading-bg) 25%,
        var(--ayak-loading-shine) 50%,
        var(--ayak-loading-bg) 75%
    );
    background-size: 200% 100%;
}

@keyframes ayak-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Skeleton shape variants */
.ayak-skeleton--text {
    height: 14px;
    margin-bottom: 8px;
}

.ayak-skeleton--title {
    height: 20px;
    width: 60%;
    margin-bottom: 12px;
}

.ayak-skeleton--image {
    aspect-ratio: 1 / 1.1;
}

.ayak-skeleton--avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

/* Skeleton grid for product cards */
.ayak-skeleton-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
    gap: 14px;
}

.ayak-skeleton-card {
    background: var(--surface, #fff);
    border-radius: var(--radius, 12px);
    border: 1px solid var(--border, #e5e7eb);
    overflow: hidden;
}

.ayak-skeleton-card .ayak-skeleton-image {
    aspect-ratio: 1 / 1.1;
}

.ayak-skeleton-card .ayak-skeleton-body {
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.ayak-skeleton-card .ayak-skeleton-line {
    height: 12px;
    border-radius: 6px;
}

.ayak-skeleton-card .ayak-skeleton-line.w-40 { width: 40%; }
.ayak-skeleton-card .ayak-skeleton-line.w-50 { width: 50%; }
.ayak-skeleton-card .ayak-skeleton-line.w-70 { width: 70%; }

/* Mobile: 2 columns */
@media (max-width: 576px) {
    .ayak-skeleton-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Legacy compatibility: keep old class names working */
.skeleton-card,
.skeleton-image,
.skeleton-body,
.skeleton-line,
.skeleton-grid {
    /* these are now handled by .ayak-skeleton* classes */
}


/* ═══════════════════════════════════════════════════════
   4. OVERLAY LOADING (container-level)
   Used on: checkout shipping method, admin forms.
   Adds semi-transparent overlay + centered spinner.
   ═══════════════════════════════════════════════════════ */

.ayak-overlay-loading {
    position: relative;
}

.ayak-overlay-loading::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--ayak-loading-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    border-radius: inherit;
    pointer-events: all;
    /* RTL: text-align inherits from parent direction */
}


/* ═══════════════════════════════════════════════════════
   5. PAGE TRANSITION BAR
   Fixed at top of viewport, animates on navigation.
   z-index: 9999 — above navbar (1030), toasts (2000).
   RTL: transform-origin flips to right.
   ═══════════════════════════════════════════════════════ */

#ayak-page-loader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    z-index: 9999;
    background: var(--ayak-loading-bar);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
    pointer-events: none;
}

/* RTL: bar grows from right */
[dir="rtl"] #ayak-page-loader {
    transform-origin: right;
}

#ayak-page-loader.active {
    transform: scaleX(0.7);
}

#ayak-page-loader.done {
    transform: scaleX(1);
    transition: transform 0.15s ease;
}


/* ═══════════════════════════════════════════════════════
   6. HTMX INDICATOR
   Shows/hides based on htmx-request class.
   Used on: navbar search inputs.
   ═══════════════════════════════════════════════════════ */

.htmx-indicator {
    opacity: 0;
    transition: opacity 150ms ease;
}

.htmx-request .htmx-indicator,
.htmx-request.htmx-indicator {
    opacity: 1;
}

/* Also support .htmx-settling for post-response fade */
.htmx-settling .htmx-indicator {
    opacity: 0;
    transition: opacity 300ms ease;
}


/* ═══════════════════════════════════════════════════════
   7. ICON ANIMATIONS
   - ayak-spin-icon: rotation for wishlist heart
   - ayak-pulse-icon: pulse for vote thumbs
   - ayak-flash: flash for star rating
   ═══════════════════════════════════════════════════════ */

.ayak-spin-icon {
    animation: ayak-spin 0.7s ease-in-out;
    pointer-events: none;
}

.ayak-pulse-icon {
    animation: ayak-pulse 0.3s ease;
    pointer-events: none;
}

@keyframes ayak-pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.3); }
    100% { transform: scale(1); }
}

.ayak-flash {
    animation: ayak-flash 0.4s ease;
}

@keyframes ayak-flash {
    0% { filter: brightness(1); }
    50% { filter: brightness(1.8); }
    100% { filter: brightness(1); }
}


/* ═══════════════════════════════════════════════════════
   8. WISHLIST CARD FADE-OUT
   Used on: wishlist page remove action.
   ═══════════════════════════════════════════════════════ */

.ayak-fade-out {
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.3s ease, transform 0.3s ease;
    pointer-events: none;
}