/* Frontend CSS for the Premium Auto Image Slider Pro */
.pisp-slider-container {
    position: relative;
    width: 100%;
    margin: 24px auto;
    overflow: hidden;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    background-color: #000000;
    font-family: 'Inter', sans-serif;
    user-select: none;
    touch-action: pan-y;
    transition: box-shadow 0.3s ease;
    /* aspect-ratio is set inline per-gallery from the first image's dimensions,
       so the container never collapses or jumps while images load (no CLS). */
    max-height: 80vh;
}

.pisp-slider-container:hover {
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

/* Loader shown until the first slide finishes loading */
.pisp-slider-loader {
    position: absolute;
    inset: 0;
    z-index: 6;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #000000;
}

.pisp-slider-container.images-ready .pisp-slider-loader {
    display: none;
}

.pisp-slider-container:not(.images-ready) .pisp-slider-wrapper {
    opacity: 0;
}

.loader-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid rgba(255, 255, 255, 0.25);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: pisp-spin 0.8s linear infinite;
}

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

/* Slide Wrapper - Stacked using CSS Grid for flawless fade transitions */
.pisp-slider-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
}

.pisp-slide {
    grid-area: 1 / 1 / 2 / 2;
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.8s step-end;
    background-size: cover;
    background-position: center;
    z-index: 1;
}

/* Low-res blurred backdrop, drawn from the tiny thumbnail (not the full image) */
.pisp-slide::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: inherit;
    background-size: cover;
    background-position: center;
    filter: blur(25px) brightness(0.45);
    z-index: 1;
    transform: scale(1.1);
}

.pisp-slide-img {
    position: relative;
    z-index: 2;
    display: block;
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    margin: 0 auto;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    border-radius: 8px;
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.pisp-slide.active {
    opacity: 1;
    visibility: visible;
    z-index: 2;
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), visibility 0s linear;
}

/* Visible error state instead of a silent black box */
.pisp-slide.pisp-slide-error::after {
    content: '⚠ Image failed to load';
    position: absolute;
    z-index: 3;
    color: #ffffff;
    font-size: 13px;
    background: rgba(0, 0, 0, 0.6);
    padding: 8px 14px;
    border-radius: 8px;
}

/* Slide (horizontal) transition */
.pisp-slider-container.transition-slide .pisp-slider-wrapper {
    display: flex;
    grid-template-columns: none;
    grid-template-rows: none;
    flex-wrap: nowrap;
    transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

.pisp-slider-container.transition-slide .pisp-slide {
    display: flex;
    flex: 0 0 100%;
    width: 100%;
    opacity: 1 !important;
    visibility: visible !important;
}

/* Navigation Buttons */
.slider-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%) scale(0.9);
    z-index: 10;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: #ffffff;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.pisp-slider-container:hover .slider-nav-btn {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) scale(1);
}

.slider-nav-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25);
}

.slider-nav-btn svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
    transition: transform 0.2s ease;
}

.prev-btn { left: 16px; }
.next-btn { right: 16px; }
.prev-btn:hover svg { transform: translateX(-2px); }
.next-btn:hover svg { transform: translateX(2px); }

/* Dot indicators */
.pisp-dots {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    gap: 8px;
}

.pisp-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    border: none;
    padding: 0;
    cursor: pointer;
    transition: all 0.25s ease;
}

.pisp-dot.active {
    background: #ffffff;
    width: 22px;
    border-radius: 4px;
}

/* --- Mobile-friendly adjustments --- */

@media (max-width: 768px) {
    .pisp-slider-container {
        border-radius: 10px;
        max-height: 60vh;
    }

    /* On touch devices there's no hover - always show nav so users know it's swipeable */
    .slider-nav-btn {
        opacity: 1;
        visibility: visible;
        transform: translateY(-50%);
        width: 36px;
        height: 36px;
    }

    .slider-nav-btn svg {
        width: 18px;
        height: 18px;
    }

    .prev-btn { left: 8px; }
    .next-btn { right: 8px; }

    .pisp-dots {
        bottom: 10px;
    }
}

@media (hover: none) {
    .slider-nav-btn {
        opacity: 1;
        visibility: visible;
        transform: translateY(-50%);
    }
}