/* ==========================================================================
   EHF Lightbox — Fullscreen Image Viewer
   Mobile-first, touch-optimized
   ========================================================================== */

/* Content images: indicate clickability */
.ehf-lightbox-trigger {
    cursor: zoom-in;
    transition: opacity var(--ehf-transition-fast);
}

.ehf-lightbox-trigger:hover {
    opacity: 0.88;
}

/* ==========================================================================
   Overlay
   ========================================================================== */
.ehf-lightbox-overlay {
    position: fixed;
    inset: 0;
    z-index: 100000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.92);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--ehf-transition-normal),
                visibility 0s linear 300ms;
    -webkit-tap-highlight-color: transparent;
    touch-action: none;
    overscroll-behavior: contain;
}

.ehf-lightbox-overlay.ehf-lightbox-active {
    opacity: 1;
    visibility: visible;
    transition: opacity var(--ehf-transition-normal),
                visibility 0s linear 0s;
}

/* ==========================================================================
   Image Container
   ========================================================================== */
.ehf-lightbox-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    padding: 0;
    touch-action: none;
    user-select: none;
    -webkit-user-select: none;
}

.ehf-lightbox-image {
    max-width: 100%;
    max-height: 100%;
    max-height: 100dvh;
    object-fit: contain;
    transform-origin: center center;
    will-change: transform;
    opacity: 0;
    transition: opacity 200ms ease;
}

.ehf-lightbox-image.ehf-lightbox-loaded {
    opacity: 1;
}

/* Transition for snap-back / zoom animations (toggled via JS) */
.ehf-lightbox-image.ehf-lightbox-animating {
    transition: transform var(--ehf-transition-normal),
                opacity 200ms ease;
}

/* ==========================================================================
   Loading Spinner
   ========================================================================== */
.ehf-lightbox-loading {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 200ms ease;
}

.ehf-lightbox-loading.ehf-lightbox-loading-visible {
    opacity: 1;
}

.ehf-lightbox-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid rgba(255, 255, 255, 0.2);
    border-top-color: #fff;
    border-radius: 50%;
    animation: ehf-lightbox-spin 0.7s linear infinite;
}

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

/* ==========================================================================
   Controls: Close Button
   ========================================================================== */
.ehf-lightbox-close {
    position: absolute;
    top: max(12px, env(safe-area-inset-top, 12px));
    right: max(12px, env(safe-area-inset-right, 12px));
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    border: none;
    border-radius: 0;
    background: var(--ehf-primary-color, #D1B79F);
    color: #fff;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    transition: background var(--ehf-transition-fast),
                transform var(--ehf-transition-fast);
}

.ehf-lightbox-close:hover {
    background: var(--ehf-primary-hover, #C4A885);
    transform: scale(1.06);
}

.ehf-lightbox-close:active {
    transform: scale(0.95);
}

/* ==========================================================================
   Controls: Counter
   ========================================================================== */
.ehf-lightbox-counter {
    position: absolute;
    top: max(16px, env(safe-area-inset-top, 16px));
    left: max(16px, env(safe-area-inset-left, 16px));
    z-index: 3;
    padding: 6px 14px;
    border-radius: 0;
    border: none;
    background: var(--ehf-primary-color, #D1B79F);
    color: #fff;
    font-family: 'Work Sans', system-ui, sans-serif;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.3px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    pointer-events: none;
    user-select: none;
}

/* Hide counter for single images */
.ehf-lightbox-single .ehf-lightbox-counter {
    display: none;
}

/* ==========================================================================
   Controls: Navigation Arrows (Desktop)
   ========================================================================== */
.ehf-lightbox-prev,
.ehf-lightbox-next {
    position: absolute;
    top: 50%;
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    border: none;
    border-radius: 0;
    background: var(--ehf-primary-color, #D1B79F);
    color: #fff;
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
    transform: translateY(-50%);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    transition: background var(--ehf-transition-fast),
                transform var(--ehf-transition-fast),
                opacity var(--ehf-transition-fast);
    opacity: 0.9;
}

.ehf-lightbox-prev {
    left: 8px;
}

.ehf-lightbox-next {
    right: 8px;
}

.ehf-lightbox-prev:hover,
.ehf-lightbox-next:hover {
    background: var(--ehf-primary-hover, #C4A885);
    opacity: 1;
    transform: translateY(-50%) scale(1.06);
}

.ehf-lightbox-prev:active,
.ehf-lightbox-next:active {
    transform: translateY(-50%) scale(0.95);
}

.ehf-lightbox-prev:disabled,
.ehf-lightbox-next:disabled {
    opacity: 0.2;
    cursor: default;
    pointer-events: none;
}

/* Hide nav arrows for single images */
.ehf-lightbox-single .ehf-lightbox-prev,
.ehf-lightbox-single .ehf-lightbox-next {
    display: none;
}

@media (min-width: 769px) {
    .ehf-lightbox-prev,
    .ehf-lightbox-next {
        width: 48px;
        height: 48px;
        font-size: 28px;
    }

    .ehf-lightbox-prev {
        left: 16px;
    }

    .ehf-lightbox-next {
        right: 16px;
    }
}

/* ==========================================================================
   Opening Animation
   ========================================================================== */
.ehf-lightbox-overlay.ehf-lightbox-opening .ehf-lightbox-image {
    animation: ehf-lightbox-scale-in 300ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes ehf-lightbox-scale-in {
    from {
        opacity: 0;
        transform: scale(0.85);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ==========================================================================
   Closing Animation
   ========================================================================== */
.ehf-lightbox-overlay.ehf-lightbox-closing {
    opacity: 0;
    transition: opacity 250ms ease-out;
}

.ehf-lightbox-overlay.ehf-lightbox-closing .ehf-lightbox-image {
    animation: ehf-lightbox-scale-out 250ms ease-in forwards;
}

@keyframes ehf-lightbox-scale-out {
    from {
        opacity: 1;
        transform: scale(1);
    }
    to {
        opacity: 0;
        transform: scale(0.85);
    }
}

/* ==========================================================================
   Navigation Slide Animations
   ========================================================================== */
.ehf-lightbox-image.ehf-lightbox-slide-out-left {
    animation: ehf-lightbox-slide-out-l 200ms ease-in forwards;
}

.ehf-lightbox-image.ehf-lightbox-slide-out-right {
    animation: ehf-lightbox-slide-out-r 200ms ease-in forwards;
}

.ehf-lightbox-image.ehf-lightbox-slide-in-left {
    animation: ehf-lightbox-slide-in-l 250ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.ehf-lightbox-image.ehf-lightbox-slide-in-right {
    animation: ehf-lightbox-slide-in-r 250ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes ehf-lightbox-slide-out-l {
    from { opacity: 1; transform: translateX(0); }
    to   { opacity: 0; transform: translateX(-80px); }
}

@keyframes ehf-lightbox-slide-out-r {
    from { opacity: 1; transform: translateX(0); }
    to   { opacity: 0; transform: translateX(80px); }
}

@keyframes ehf-lightbox-slide-in-l {
    from { opacity: 0; transform: translateX(80px); }
    to   { opacity: 1; transform: translateX(0); }
}

@keyframes ehf-lightbox-slide-in-r {
    from { opacity: 0; transform: translateX(-80px); }
    to   { opacity: 1; transform: translateX(0); }
}

/* ==========================================================================
   Controls auto-hide when zoomed
   ========================================================================== */
.ehf-lightbox-overlay.ehf-lightbox-zoomed .ehf-lightbox-close,
.ehf-lightbox-overlay.ehf-lightbox-zoomed .ehf-lightbox-counter,
.ehf-lightbox-overlay.ehf-lightbox-zoomed .ehf-lightbox-prev,
.ehf-lightbox-overlay.ehf-lightbox-zoomed .ehf-lightbox-next {
    opacity: 0;
    pointer-events: none;
    transition: opacity 200ms ease;
}

/* ==========================================================================
   Desktop: mouse-wheel zoom cursor
   ========================================================================== */
@media (min-width: 769px) {
    .ehf-lightbox-container {
        cursor: zoom-in;
    }

    .ehf-lightbox-overlay.ehf-lightbox-zoomed .ehf-lightbox-container {
        cursor: grab;
    }

    .ehf-lightbox-overlay.ehf-lightbox-zoomed .ehf-lightbox-container:active {
        cursor: grabbing;
    }
}