/* ============================================
   Brochure Viewer - PDF Slideshow Component
   Premium dark-themed Swiper.js viewer
   ============================================ */

/* --- Container --- */
.brochure-viewer {
    background: #1a1a1a;
    border-radius: 8px;
    overflow: hidden;
    margin-top: 16px;
    margin-bottom: 16px;
    position: relative;
}

.brochure-viewer:focus {
    outline: none;
}

/* --- Header --- */
.brochure-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: #222;
    border-bottom: 1px solid #333;
}

.brochure-header h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 8px;
}

.brochure-header h3 i {
    color: #8a3995;
    font-size: 18px;
}

.brochure-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.brochure-page-counter {
    color: #aaa;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.brochure-page-counter .brochure-current-page {
    color: #fff;
    font-weight: 700;
}

/* --- Separator in header --- */
.brochure-actions-sep {
    width: 1px;
    height: 20px;
    background: #444;
    margin: 0 4px;
}

/* --- Header Buttons (shared) --- */
.btn-brochure-fullscreen,
.btn-brochure-zoom-in,
.btn-brochure-zoom-out,
.btn-brochure-zoom-reset {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 6px;
    color: #ccc;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
    text-decoration: none;
    padding: 0;
}

.btn-brochure-fullscreen:hover,
.btn-brochure-zoom-in:hover,
.btn-brochure-zoom-out:hover,
.btn-brochure-zoom-reset:hover {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.3);
    text-decoration: none;
}

.btn-brochure-zoom-reset {
    display: none;
    color: #8a3995;
    border-color: rgba(138, 57, 149, 0.4);
}

.btn-brochure-zoom-reset:hover {
    color: #fff;
    background: rgba(138, 57, 149, 0.3);
    border-color: rgba(138, 57, 149, 0.6);
}

/* --- Zoom Level Display --- */
.brochure-zoom-level {
    color: #888;
    font-size: 11px;
    font-weight: 500;
    min-width: 32px;
    text-align: center;
    white-space: nowrap;
}

/* --- Main Swiper --- */
.brochure-swiper-main {
    width: 100%;
    background: #111;
    position: relative;
}

.brochure-swiper-main .swiper-slide {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #111;
    min-height: 300px;
}

/* Swiper zoom container */
.brochure-swiper-main .swiper-zoom-container {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    -webkit-user-select: none;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    outline: none;
}

.brochure-swiper-main .swiper-zoom-container::selection,
.brochure-swiper-main .swiper-zoom-container *::selection {
    background: transparent;
}

.brochure-swiper-main .swiper-slide {
    -webkit-user-select: none;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.brochure-page-img {
    max-width: 100%;
    max-height: 700px;
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
    margin: 0 auto;
}

/* Landscape orientation: wider aspect */
.brochure-viewer[data-orientation="landscape"] .brochure-page-img {
    max-height: 600px;
}

/* Portrait orientation: taller aspect */
.brochure-viewer[data-orientation="portrait"] .brochure-page-img {
    max-height: 800px;
}

/* Zoom cursor hints */
.brochure-swiper-main .swiper-slide {
    cursor: zoom-in;
}

.brochure-swiper-main .swiper-slide-zoomed {
    cursor: grab;
}

.brochure-swiper-main .swiper-slide-zoomed:active {
    cursor: grabbing;
}

/* --- Swiper Navigation Arrows --- */
.brochure-swiper-main .swiper-button-next,
.brochure-swiper-main .swiper-button-prev {
    color: #fff;
    background: rgba(0, 0, 0, 0.5);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    transition: background 0.2s;
}

.brochure-swiper-main .swiper-button-next:hover,
.brochure-swiper-main .swiper-button-prev:hover {
    background: rgba(0, 0, 0, 0.75);
}

.brochure-swiper-main .swiper-button-next::after,
.brochure-swiper-main .swiper-button-prev::after {
    font-size: 18px;
    font-weight: 700;
}

.brochure-swiper-main .swiper-button-disabled {
    opacity: 0.25;
}

/* --- Lazy Loading Preloader --- */
.brochure-swiper-main .swiper-lazy-preloader {
    border-color: rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
}

/* Loading skeleton placeholder */
.brochure-swiper-main .swiper-slide:not(.swiper-slide-active) .swiper-lazy:not(.swiper-lazy-loaded) + .swiper-lazy-preloader {
    display: block;
}

/* --- Thumbnail Strip --- */
.brochure-swiper-thumbs {
    padding: 10px 16px;
    background: #1a1a1a;
    border-top: 1px solid #333;
}

.brochure-swiper-thumbs .swiper-slide {
    width: 80px;
    height: 56px;
    border-radius: 4px;
    overflow: hidden;
    cursor: pointer;
    opacity: 0.5;
    border: 2px solid transparent;
    transition: opacity 0.2s, border-color 0.2s;
    flex-shrink: 0;
}

.brochure-swiper-thumbs .swiper-slide:hover {
    opacity: 0.8;
}

.brochure-swiper-thumbs .swiper-slide-thumb-active {
    opacity: 1;
    border-color: #8a3995;
}

.brochure-thumb-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* --- PDF Download Link --- */
.brochure-pdf-link {
    padding: 10px 16px;
    background: #1a1a1a;
    border-top: 1px solid #333;
    text-align: center;
}

.brochure-pdf-link a {
    color: #aaa;
    font-size: 13px;
    text-decoration: none;
    transition: color 0.2s;
}

.brochure-pdf-link a:hover {
    color: #fff;
    text-decoration: none;
}

.brochure-pdf-link a i {
    color: #8a3995;
    margin-right: 4px;
}

/* --- Fullscreen Mode --- */
.brochure-viewer.brochure-fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 99999;
    border-radius: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
}

.brochure-viewer.brochure-fullscreen .brochure-swiper-main {
    flex: 1;
    min-height: 0;
}

.brochure-viewer.brochure-fullscreen .brochure-swiper-main .swiper-slide {
    min-height: auto;
}

.brochure-viewer.brochure-fullscreen .brochure-page-img {
    max-height: calc(100vh - 130px);
}

.brochure-viewer.brochure-fullscreen .btn-brochure-fullscreen i::before {
    content: "\f066";
}

/* --- Loading Skeleton --- */
.brochure-skeleton {
    background: linear-gradient(90deg, #222 25%, #2a2a2a 50%, #222 75%);
    background-size: 200% 100%;
    animation: brochure-shimmer 1.5s infinite;
    width: 100%;
    height: 100%;
    min-height: 300px;
}

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


/* ============================================
   Responsive Breakpoints
   ============================================ */

/* Tablet (768px - 1024px) */
@media (max-width: 1024px) {
    .brochure-page-img {
        max-height: 540px;
    }

    .brochure-viewer[data-orientation="landscape"] .brochure-page-img {
        max-height: 440px;
    }

    .brochure-viewer[data-orientation="portrait"] .brochure-page-img {
        max-height: 640px;
    }

    .brochure-swiper-thumbs .swiper-slide {
        width: 70px;
        height: 48px;
    }
}

/* Mobile (<768px) */
@media (max-width: 767px) {
    .brochure-header {
        padding: 10px 12px;
    }

    .brochure-header h3 {
        font-size: 14px;
    }

    .brochure-actions {
        gap: 6px;
    }

    .brochure-page-counter {
        font-size: 12px;
    }

    .btn-brochure-fullscreen,
    .btn-brochure-zoom-in,
    .btn-brochure-zoom-out,
    .btn-brochure-zoom-reset {
        width: 30px;
        height: 30px;
        font-size: 12px;
    }

    .brochure-zoom-level {
        font-size: 10px;
        min-width: 28px;
    }

    .brochure-actions-sep {
        height: 16px;
    }

    .brochure-page-img {
        max-height: 400px;
    }

    .brochure-viewer[data-orientation="landscape"] .brochure-page-img {
        max-height: 320px;
    }

    .brochure-viewer[data-orientation="portrait"] .brochure-page-img {
        max-height: 500px;
    }

    .brochure-swiper-main .swiper-button-next,
    .brochure-swiper-main .swiper-button-prev {
        width: 36px;
        height: 36px;
    }

    .brochure-swiper-main .swiper-button-next::after,
    .brochure-swiper-main .swiper-button-prev::after {
        font-size: 14px;
    }

    .brochure-swiper-thumbs {
        padding: 8px 10px;
    }

    .brochure-swiper-thumbs .swiper-slide {
        width: 60px;
        height: 42px;
    }

    /* Fullscreen adjustments for mobile */
    .brochure-viewer.brochure-fullscreen .brochure-page-img {
        max-height: calc(100vh - 120px);
    }
}