/**
 * Frontend styles for PDF Flipbook.
 *
 * @package PDF_Flipbook
 */

:root {
    --lvpdf-primary: #DE1428;
    --lvpdf-secondary: #D4AF37;
    --lvpdf-dark: #141414;
    --lvpdf-bg: #F6F6F6;
    --lvpdf-card-bg: #fff;
    --lvpdf-text: #111;
    --lvpdf-text-muted: #666;
    --lvpdf-border: #DDD;
}

/* ===== Theme Compatibility Reset ===== */
.lvpdf-viewer-wrap,
.lvpdf-preview-card,
.lvpdf-archive-wrap,
.lvpdf-recent-wrap,
.lvpdf-widget-wrap {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif !important;
    font-size: 14px !important;
    line-height: 1.5 !important;
    color: #111 !important;
    box-sizing: border-box !important;
}

.lvpdf-viewer-wrap *,
.lvpdf-preview-card *,
.lvpdf-archive-wrap *,
.lvpdf-recent-wrap *,
.lvpdf-widget-wrap * {
    box-sizing: border-box !important;
}

.lvpdf-viewer-wrap a,
.lvpdf-preview-card a,
.lvpdf-archive-wrap a,
.lvpdf-recent-wrap a,
.lvpdf-widget-wrap a {
    color: inherit !important;
    text-decoration: none !important;
    transition: background 0.2s, color 0.2s !important;
}

.lvpdf-viewer-wrap img,
.lvpdf-preview-card img,
.lvpdf-archive-wrap img,
.lvpdf-recent-wrap img,
.lvpdf-widget-wrap img {
    max-width: 100% !important;
    height: auto !important;
    display: block !important;
}

/* ===== Viewer ===== */
.lvpdf-viewer-wrap {
    max-width: 100%;
    margin: 0 auto;
}

.lvpdf-viewer-container {
    position: relative;
    width: 100%;
    background: #000;
    border-radius: 8px;
    overflow: hidden;
}

.lvpdf-viewer-container iframe {
    border: none;
    display: block;
}

.lvpdf-viewer-controls {
    text-align: right;
    margin-top: 8px;
}

.lvpdf-btn-download {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    min-height: 44px;
    background: var(--lvpdf-primary);
    color: #fff;
    text-decoration: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    transition: background 0.2s;
}

.lvpdf-btn-download:hover {
    background: color-mix(in srgb, var(--lvpdf-primary) 80%, #000);
}

.lvpdf-fallback {
    text-align: center;
    padding: 40px;
    background: #f9f9f9;
    border-radius: 8px;
}

.lvpdf-fallback a {
    display: inline-block;
    padding: 12px 24px;
    background: var(--lvpdf-primary);
    color: #fff;
    text-decoration: none;
    border-radius: 6px;
    margin-top: 12px;
}

.lvpdf-fallback a:hover {
    background: color-mix(in srgb, var(--lvpdf-primary) 80%, #000);
}

/* ===== Recent Widget ===== */
.lvpdf-recent-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.lvpdf-recent-card {
    background: var(--lvpdf-card-bg);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: transform 0.2s, box-shadow 0.2s;
}

.lvpdf-recent-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}

.lvpdf-recent-thumb-link {
    display: block;
}

/* ===== Widget Sidebar ===== */
.lvpdf-widget-list .lvpdf-widget-item:last-child {
    border-bottom: none !important;
    padding-bottom: 0 !important;
    margin-bottom: 0 !important;
}

.lvpdf-widget-list .lvpdf-widget-item img {
    transition: opacity 0.2s;
}

.lvpdf-widget-list .lvpdf-widget-item img:hover {
    opacity: 0.9;
}

.lvpdf-widget-list .lvpdf-widget-item a {
    color: var(--lvpdf-text);
    text-decoration: none;
}

.lvpdf-widget-list .lvpdf-widget-item a:hover {
    color: var(--lvpdf-primary);
}

/* ===== Archive Grid ===== */
.lvpdf-archive-wrap {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 24px;
    background: var(--lvpdf-bg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.lvpdf-archive-header {
    text-align: center;
    margin-bottom: 32px;
}

.lvpdf-archive-title {
    font-family: 'Oswald', sans-serif;
    font-weight: 700;
    font-size: clamp(32px, 5vw, 64px);
    color: var(--lvpdf-text);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 0 0 12px;
}

.lvpdf-archive-subtitle {
    font-size: 16px;
    color: var(--lvpdf-text-muted);
    margin: 0 0 24px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== Filters ===== */
.lvpdf-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-bottom: 32px;
}

.lvpdf-filters input[type="text"] {
    height: 44px !important;
    line-height: 44px !important;
    padding: 0 16px !important;
    border: 1px solid var(--lvpdf-border) !important;
    border-radius: 6px !important;
    font-size: 14px !important;
    color: var(--lvpdf-text) !important;
    min-width: 180px;
    background: #fff !important;
    text-align: left;
    box-shadow: none !important;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.lvpdf-filters select {
    height: 44px !important;
    line-height: 44px !important;
    padding: 0 36px 0 16px !important;
    border: 1px solid var(--lvpdf-border) !important;
    border-radius: 6px !important;
    font-size: 14px !important;
    color: var(--lvpdf-text) !important;
    min-width: 180px;
    background-color: #fff !important;
    text-align: center;
    text-align-last: center;
    -webkit-appearance: none !important;
    -moz-appearance: none !important;
    appearance: none !important;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E") !important;
    background-repeat: no-repeat !important;
    background-position: right 12px center !important;
    background-size: 12px !important;
    box-shadow: none !important;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.lvpdf-filters input[type="text"]:focus,
.lvpdf-filters select:focus {
    outline: none;
    border-color: var(--lvpdf-primary) !important;
    box-shadow: 0 0 0 3px rgba(222, 20, 40, 0.15) !important;
}

.lvpdf-filters button {
    height: 44px !important;
    line-height: 44px !important;
    padding: 0 24px !important;
    min-height: 44px;
    background: var(--lvpdf-primary) !important;
    color: #fff !important;
    border: none !important;
    border-radius: 6px !important;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}

.lvpdf-filters button:hover {
    background: color-mix(in srgb, var(--lvpdf-primary) 80%, #000);
}

.lvpdf-filters button:active {
    transform: scale(0.98);
}

.lvpdf-filters button:focus-visible {
    outline: 2px solid var(--lvpdf-primary);
    outline-offset: 2px;
}

/* ===== Grid ===== */
.lvpdf-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

@media (max-width: 1199px) {
    .lvpdf-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 991px) {
    .lvpdf-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 767px) {
    .lvpdf-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .lvpdf-filters {
        flex-direction: column;
    }

    .lvpdf-filters input[type="text"],
    .lvpdf-filters select {
        min-width: 100%;
    }
}

/* ===== Cards ===== */
.lvpdf-card {
    background: var(--lvpdf-card-bg);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
    position: relative;
}

.lvpdf-card:hover,
.lvpdf-card:focus-visible {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.lvpdf-card:focus-visible {
    outline: 2px solid var(--lvpdf-primary);
    outline-offset: 2px;
}

.lvpdf-card-top {
    background: var(--lvpdf-primary);
    padding: 6px 12px;
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.lvpdf-card-badge-pdf {
    background: #fff;
    color: var(--lvpdf-primary);
    padding: 2px 8px;
    border-radius: 3px;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
}

.lvpdf-card-download {
    transition: transform 0.15s, opacity 0.15s;
}

.lvpdf-card-download:hover {
    transform: scale(1.15);
    opacity: 0.85;
}

.lvpdf-card-date {
    position: absolute;
    top: 36px;
    right: 8px;
    background: var(--lvpdf-primary);
    color: #fff;
    padding: 6px 10px;
    border-radius: 4px;
    text-align: center;
    line-height: 1.2;
    z-index: 2;
}

.lvpdf-card-date-day {
    display: block;
    font-size: 10px;
    text-transform: uppercase;
    font-weight: 600;
}

.lvpdf-card-date-year {
    display: block;
    font-size: 11px;
    font-weight: 700;
}

.lvpdf-card-thumb {
    display: block;
    position: relative;
    overflow: hidden;
}

.lvpdf-card-thumb img {
    width: 100%;
    aspect-ratio: 3/4;
    object-fit: cover;
    display: block;
    transition: transform 0.3s;
}

.lvpdf-card:hover .lvpdf-card-thumb img {
    transform: scale(1.02);
}

.lvpdf-card-legend {
    text-align: center;
    padding: 12px;
    font-weight: 700;
    font-size: 13px;
    color: var(--lvpdf-text);
}

/* ===== Load More ===== */
.lvpdf-load-more {
    text-align: center;
    margin-top: 32px;
}

.lvpdf-load-more button {
    padding: 12px 32px;
    min-height: 44px;
    background: var(--lvpdf-primary);
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}

.lvpdf-load-more button:hover {
    background: color-mix(in srgb, var(--lvpdf-primary) 80%, #000);
}

.lvpdf-load-more button:active {
    transform: scale(0.98);
}

.lvpdf-load-more button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ===== Skeleton Loading ===== */
.lvpdf-skeleton {
    background: linear-gradient(90deg, #eee 25%, #e0e0e0 50%, #eee 75%);
    background-size: 200% 100%;
    animation: lvpdf-shimmer 1.5s ease-in-out infinite;
    border-radius: 4px;
}

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

.lvpdf-skeleton-card {
    background: var(--lvpdf-card-bg);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.lvpdf-skeleton-top {
    height: 28px;
    background: var(--lvpdf-primary);
    opacity: 0.6;
}

.lvpdf-skeleton-img {
    width: 100%;
    aspect-ratio: 3/4;
}

.lvpdf-skeleton-text {
    height: 14px;
    margin: 12px auto;
    width: 60%;
}

/* ===== No Results ===== */
.lvpdf-no-results {
    text-align: center;
    padding: 48px 24px;
    color: var(--lvpdf-text-muted);
    font-size: 16px;
    grid-column: 1 / -1;
}

/* ===== Lightbox ===== */
.lvpdf-lightbox-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 999999;
    justify-content: center;
    align-items: center;
}

.lvpdf-lightbox-overlay.is-active {
    display: flex;
}

.lvpdf-lightbox-content {
    width: 95%;
    height: 90%;
    position: relative;
}

.lvpdf-lightbox-content iframe {
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 8px;
}

.lvpdf-lightbox-close {
    position: absolute;
    top: -48px;
    right: 0;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: #fff;
    font-size: 32px;
    cursor: pointer;
    padding: 0 12px;
    min-width: 48px;
    min-height: 48px;
    line-height: 1;
    border-radius: 4px;
    transition: background 0.2s;
}

.lvpdf-lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.lvpdf-lightbox-close:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 2px;
}

/* ===== Responsive Lightbox ===== */
@media (max-width: 767px) {
    .lvpdf-lightbox-content {
        width: 100%;
        height: 100%;
    }

    .lvpdf-lightbox-close {
        top: 10px;
        right: 10px;
        background: rgba(0, 0, 0, 0.5);
    }
}

/* ===== Preview Card (Sidebar Widget) ===== */
.lvpdf-preview-card {
    max-width: 400px;
    margin: 0 auto;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.lvpdf-preview-card-inner {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
    transition: transform 0.2s, box-shadow 0.2s, border-radius 0.2s;
}

.lvpdf-preview-card-inner:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15) !important;
}

/* Header toolbar: title + icon-only action buttons (label shown on hover) */
.lvpdf-preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 10px 14px;
}

.lvpdf-preview-header-title {
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    line-height: 1.3;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1 1 auto;
    min-width: 0;
}

.lvpdf-preview-actions {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 0 0 auto;
}

.lvpdf-preview-icon-btn {
    position: relative;
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    width: 30px !important;
    height: 30px !important;
    padding: 0 !important;
    background: rgba(255, 255, 255, 0.16) !important;
    color: #fff !important;
    border: none !important;
    border-radius: 50% !important;
    font-size: 14px !important;
    line-height: 1 !important;
    text-decoration: none;
    cursor: pointer;
    transition: background 0.2s, transform 0.15s;
}

.lvpdf-preview-icon-btn:hover,
.lvpdf-preview-icon-btn:focus-visible {
    background: rgba(255, 255, 255, 0.32);
    transform: translateY(-1px);
    outline: none;
}

.lvpdf-preview-tooltip {
    /* Positioned below the button (not above) since the header sits at the
       top of .lvpdf-preview-card-inner, which clips overflow — a tooltip
       popping upward would be cut off by that boundary. */
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(-4px);
    background: var(--lvpdf-dark, #141414);
    color: #fff;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.15s, transform 0.15s;
    z-index: 5;
}

.lvpdf-preview-icon-btn:hover .lvpdf-preview-tooltip,
.lvpdf-preview-icon-btn:focus-visible .lvpdf-preview-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* The rightmost action button's tooltip would overflow past the card's
   right edge if centered — anchor it to the right instead. */
.lvpdf-preview-actions .lvpdf-preview-icon-btn:last-child .lvpdf-preview-tooltip {
    left: auto;
    right: 0;
    transform: translateX(0) translateY(-4px);
}

.lvpdf-preview-actions .lvpdf-preview-icon-btn:last-child:hover .lvpdf-preview-tooltip,
.lvpdf-preview-actions .lvpdf-preview-icon-btn:last-child:focus-visible .lvpdf-preview-tooltip {
    transform: translateX(0) translateY(0);
}

.lvpdf-preview-thumb {
    position: relative;
    overflow: hidden;
}

.lvpdf-preview-thumb img {
    transition: transform 0.3s;
}

.lvpdf-preview-thumb:hover img {
    transform: scale(1.03);
}

.lvpdf-preview-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.lvpdf-preview-thumb:hover .lvpdf-preview-overlay {
    opacity: 1;
}

.lvpdf-preview-read-btn {
    transition: opacity 0.2s, transform 0.2s;
}

.lvpdf-preview-read-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.lvpdf-preview-read-btn:active {
    transform: translateY(0);
}

/* Preview Lightbox */
.lvpdf-preview-lightbox {
    position: fixed;
    inset: 0;
    z-index: 999999;
    background: rgba(0, 0, 0, 0.85);
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.lvpdf-preview-lightbox.is-active {
    display: flex !important;
    opacity: 1;
}

.lvpdf-preview-lightbox iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* Responsive */
@media (max-width: 480px) {
    .lvpdf-preview-card {
        max-width: 100% !important;
    }

    .lvpdf-preview-card-inner {
        border-radius: 8px !important;
    }
}

/* ===== Responsive Viewer ===== */
@media (max-width: 767px) {
    .lvpdf-viewer-container {
        aspect-ratio: 9 / 16;
        max-height: 70vh;
    }

    .lvpdf-viewer-controls {
        text-align: center;
    }

    .lvpdf-btn-download {
        width: 100%;
        text-align: center;
        min-height: 44px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }
}

/* ===== Tablet Portrait ===== */
@media (max-width: 576px) {
    .lvpdf-archive-wrap {
        padding: 24px 16px !important;
    }

    .lvpdf-grid {
        gap: 16px;
    }

    .lvpdf-card-title {
        font-size: 14px;
    }

    .lvpdf-card-date {
        font-size: 9px;
    }

    .lvpdf-card-badge {
        font-size: 9px;
        padding: 2px 6px;
    }
}

/* ===== Touch Devices — Remove Hover Sticky State ===== */
@media (hover: none) {
    .lvpdf-card:hover,
    .lvpdf-card:focus-visible,
    .lvpdf-preview-card-inner:hover {
        transform: none !important;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08) !important;
    }

    .lvpdf-preview-thumb:hover img {
        transform: none !important;
    }

    .lvpdf-preview-thumb:hover .lvpdf-preview-overlay {
        opacity: 0 !important;
    }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}