/**
 * Omera Gallery Interactive Element - Stylesheet
 * Scoped zero-bloat CSS for High Performance
 */

.omera-gallery-widget {
    --omera-gap: 20px;
    --omera-thumb-gap: 12px;
    --omera-thumb-w: 90px;
    --omera-radius: 4px;
    --omera-active-color: #0a0a0a;
    width: 100%;
    position: relative;
    box-sizing: border-box;
}

.omera-gallery-widget *,
.omera-gallery-widget *::before,
.omera-gallery-widget *::after {
    box-sizing: border-box;
}

/* ==========================================================================
   1. DESKTOP LAYOUT (THUMBNAIL COLUMN + MAIN VIEW)
   ========================================================================== */
.omera-gallery-desktop {
    display: flex;
    gap: var(--omera-gap);
    align-items: stretch;
    /* Đảm bảo 2 cột bằng chiều cao nhau tuyệt đối */
    width: 100%;
}

/* Các hướng đặt vị trí thumbnail */
.omera-gallery-widget.omera-pos-left .omera-gallery-desktop {
    flex-direction: row;
}

.omera-gallery-widget.omera-pos-right .omera-gallery-desktop {
    flex-direction: row-reverse;
}

.omera-gallery-widget.omera-pos-bottom .omera-gallery-desktop {
    flex-direction: column-reverse;
    align-items: flex-start;
}

/* Cột Thumbnail */
.omera-gallery-thumbs {
    display: flex;
    flex-direction: column;
    gap: var(--omera-thumb-gap);
    width: var(--omera-thumb-w);
    flex-shrink: 0;
}

.omera-gallery-widget.omera-pos-bottom .omera-gallery-thumbs {
    flex-direction: row;
    width: 100%;
    justify-content: flex-start;
}

/* Mỗi ô Thumbnail con (padding 4px, border 1px #d9d9d9, radius 4px, ảnh dạng cover) */
.omera-thumb-item {
    width: 100% !important;
    height: auto !important;
    aspect-ratio: var(--thumb-ratio, 1 / 1) !important;
    flex: 0 0 auto !important;
    flex-shrink: 0 !important;
    padding: 4px !important;
    border: 1px solid #d9d9d9 !important;
    border-radius: 4px !important;
    overflow: hidden !important;
    cursor: pointer;
    outline: none !important;
    background: #ffffff;
    opacity: 0.85;
    transition: border-color 0.2s ease, opacity 0.2s ease;
    position: relative;
    user-select: none;
    box-sizing: border-box !important;
    box-shadow: none !important;
}

.omera-gallery-widget.omera-pos-bottom .omera-thumb-item {
    width: var(--omera-thumb-w) !important;
}

.omera-thumb-item img {
    width: 100% !important;
    height: 100% !important;
    min-width: 100% !important;
    min-height: 100% !important;
    max-width: 100% !important;
    max-height: 100% !important;
    object-fit: cover !important;
    object-position: center !important;
    border-radius: 2px !important;
    display: block !important;
    pointer-events: none;
}

/* Khi Active hoặc Hover: border màu #0a0a0a */
.omera-thumb-item:hover,
.omera-thumb-item.active {
    border-color: #0a0a0a !important;
    opacity: 1 !important;
}

/* Ô trống giữ chỗ (Spacer) để luôn đảm bảo đúng số lượng N slots và giữ full height */
.omera-thumb-item.omera-thumb-spacer {
    visibility: hidden;
    pointer-events: none;
    opacity: 0;
    border: none !important;
    padding: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
}

/* Nút hiển thị thêm +X ảnh */
.omera-thumb-more {
    width: 100%;
    aspect-ratio: var(--thumb-ratio, 1 / 1);
    flex-shrink: 0;
    padding: 4px;
    border-radius: 4px;
    border: 1px solid #d9d9d9;
    background: #f9fafb;
    color: #374151;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
    user-select: none;
    box-sizing: border-box;
}

.omera-gallery-widget.omera-pos-bottom .omera-thumb-more {
    width: var(--omera-thumb-w);
}

.omera-thumb-more:hover {
    border-color: #0a0a0a;
    color: #0a0a0a;
    background: #f3f4f6;
}

/* Khung Ảnh Main To (Chiếm full width còn lại và height phụ thuộc 100% vào chiều cao cột thumbnail) */
.omera-gallery-main {
    flex: 1;
    min-width: 0;
    align-self: stretch;
    /* Cao bằng đúng chiều cao cột thumbnail */
    position: relative;
    border-radius: var(--omera-radius);
    overflow: hidden;
    background: #f9fafb;
}

.omera-gallery-widget.omera-pos-left .omera-main-link,
.omera-gallery-widget.omera-pos-left .omera-main-wrap,
.omera-gallery-widget.omera-pos-right .omera-main-link,
.omera-gallery-widget.omera-pos-right .omera-main-wrap {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: block;
    overflow: hidden;
}

.omera-gallery-widget.omera-pos-bottom .omera-main-link,
.omera-gallery-widget.omera-pos-bottom .omera-main-wrap {
    display: block;
    width: 100%;
    aspect-ratio: 3 / 4;
    overflow: hidden;
}

.omera-main-img {
    width: 100% !important;
    height: 100% !important;
    max-width: none !important;
    max-height: none !important;
    object-fit: cover !important;
    /* Cover tràn đầy toàn bộ khung do thumbnail quyết định */
    object-position: center !important;
    display: block !important;
    opacity: 1;
    transition: opacity 0.25s ease, transform 0.4s ease;
}

.omera-main-img.omera-fade-out {
    opacity: 0.15;
}

.omera-main-link:hover .omera-main-img {
    transform: scale(1.02);
}

/* Icon Zoom */
.omera-zoom-icon {
    position: absolute;
    bottom: 14px;
    right: 14px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #1f2937;
    opacity: 0;
    transform: translateY(6px);
    transition: all 0.25s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    pointer-events: none;
}

.omera-main-link:hover .omera-zoom-icon {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   2. MOBILE SLIDER LAYOUT (SLIDE HIỂN THỊ 1 ẢNH)
   ========================================================================== */
.omera-gallery-mobile {
    display: none;
    width: 100%;
}

@media (max-width: 767px) {
    .omera-gallery-widget[data-mobile-slider="yes"] .omera-gallery-desktop {
        display: none !important;
    }

    .omera-gallery-widget[data-mobile-slider="yes"] .omera-gallery-mobile {
        display: block !important;
    }

    /* Track vuốt mượt mà 100% Native Touch 60fps */
    .omera-slider-track {
        display: flex;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        scroll-behavior: smooth;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        /* Firefox */
        width: 100%;
        border-radius: var(--omera-radius);
    }

    .omera-slider-track::-webkit-scrollbar {
        display: none;
        /* Safari & Chrome */
    }

    /* Slide hiển thị 1 ảnh duy nhất (100% width) */
    .omera-slide-item {
        flex: 0 0 100%;
        width: 100%;
        aspect-ratio: 3 / 4;
        scroll-snap-align: start;
        scroll-snap-stop: always;
        overflow: hidden;
        background: #f9fafb;
    }

    .omera-slide-item img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        display: block;
    }

    .omera-slide-item a {
        display: block;
        width: 100%;
        height: 100%;
    }

    /* Dots phân trang bên dưới */
    .omera-slider-dots {
        display: flex;
        justify-content: center;
        align-items: center;
        gap: 8px;
        margin-top: 14px;
        padding: 4px 0;
    }

    .omera-dot {
        width: 7px;
        height: 7px;
        border-radius: 50%;
        background: #d1d5db;
        transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        cursor: pointer;
    }

    .omera-dot.active {
        background: var(--omera-active-color);
        width: 22px;
        border-radius: 6px;
    }
}