/* ===== PDF Viewer Plugin – Frontend Styles ===== */

/* ---------- Card i Preview – czyste wrappery, zero wizualności ---------- */
.pdf-viewer-card,
.pdf-card-preview {
    display: inline-block !important;
    width: auto !important;
    max-width: 100% !important;
    min-width: 0 !important;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    border-radius: 0 !important;
    padding: 0 !important;
    margin: 0 !important;
    overflow: visible !important;
    line-height: 0;
    vertical-align: top;
    cursor: pointer;
    position: relative;
    outline: none;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
.pdf-viewer-card {
    margin: 1em 0 !important;
    transition: transform .3s ease;
}
.pdf-viewer-card:hover {
    transform: translateY(-4px);
}
.pdf-card-preview:focus-visible {
    outline: 3px solid #0073aa !important;
    outline-offset: 4px;
    border-radius: 14px !important;
}

/* ---------- Canvas – JEDYNE miejsce ze stylem wizualnym ---------- */
.pdf-thumbnail-canvas {
    display: block !important;
    width: auto !important;
    max-width: 100%;
    height: auto !important;
    border-radius: 12px;
    box-shadow:
        0 2px 4px rgba(0,0,0,.06),
        0 8px 24px rgba(0,0,0,.13),
        0 16px 40px rgba(0,0,0,.08);
    transition: box-shadow .3s ease, transform .3s ease;
}
.pdf-viewer-card:hover .pdf-thumbnail-canvas {
    box-shadow:
        0 4px 8px rgba(0,0,0,.08),
        0 16px 40px rgba(0,0,0,.20),
        0 32px 60px rgba(0,0,0,.10);
    transform: translateY(-3px);
}

/* ---------- Hover overlay ---------- */
.pdf-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,.40);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity .25s;
    border-radius: 12px;
    pointer-events: none;
}
.pdf-card-preview:hover .pdf-overlay,
.pdf-card-preview:focus-visible .pdf-overlay { opacity: 1; }

.pdf-overlay-icon {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: #fff;
    font-size: .95rem;
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: .03em;
    text-shadow: 0 1px 4px rgba(0,0,0,.4);
}
.pdf-overlay-icon svg {
    width: 52px;
    height: 52px;
    filter: drop-shadow(0 2px 6px rgba(0,0,0,.3));
}

/* ---------- Loading spinner ---------- */
.pdf-loading-spinner {
    position: absolute;
    inset: 0;
    min-width: 200px;
    min-height: 260px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f0f2f5;
    border-radius: 12px;
    transition: opacity .3s;
}
.pdf-loading-spinner.hidden { opacity: 0; pointer-events: none; }

.pdf-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(0,115,170,.15);
    border-top-color: #0073aa;
    border-radius: 50%;
    animation: pdf-spin .75s linear infinite;
}
.pdf-spinner-large { width: 56px; height: 56px; border-width: 4px; }

/* Error */
.pdf-viewer-error {
    padding: 12px 16px;
    background: #fef2f2;
    border: 1px solid #fca5a5;
    border-radius: 8px;
    color: #b91c1c;
    font-size: .9rem;
    line-height: 1.4;
}

/* ===== Lightbox ===== */
.pdf-lightbox {
    position: fixed;
    inset: 0;
    z-index: 999999;
    display: flex;
    align-items: stretch;
    justify-content: center;
}
.pdf-lightbox-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15,20,30,.85);
    backdrop-filter: blur(4px);
}
.pdf-lightbox-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 960px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    background: #fff;
    box-shadow: 0 24px 60px rgba(0,0,0,.4);
    animation: pdf-slide-in .25s ease;
}
@keyframes pdf-slide-in {
    from { opacity: 0; transform: scale(.95) translateY(16px); }
    to   { opacity: 1; transform: scale(1) translateY(0); }
}
@keyframes pdf-spin {
    to { transform: rotate(360deg); }
}

.pdf-lightbox-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: #1a1a2e;
    color: #fff;
    flex-shrink: 0;
}
.pdf-lightbox-title {
    flex: 1;
    margin: 0;
    font-size: .95rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: #fff;
}
.pdf-lightbox-controls { display: flex; align-items: center; gap: 4px; }

.pdf-lb-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: none;
    background: rgba(255,255,255,.1);
    color: #fff;
    border-radius: 8px;
    cursor: pointer;
    transition: background .2s;
    text-decoration: none;
    flex-shrink: 0;
}
.pdf-lb-btn:hover { background: rgba(255,255,255,.2); color: #fff; }
.pdf-lb-btn svg { width: 18px; height: 18px; }
.pdf-lb-close:hover { background: #e2455a; }

.pdf-zoom-level {
    color: rgba(255,255,255,.8);
    font-size: .78rem;
    font-weight: 600;
    min-width: 42px;
    text-align: center;
}
.pdf-page-nav { display: flex; align-items: center; gap: 2px; }
.pdf-page-info {
    color: rgba(255,255,255,.8);
    font-size: .78rem;
    font-weight: 600;
    min-width: 55px;
    text-align: center;
}

.pdf-lightbox-body {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    background: #e8eaed;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    gap: 16px;
    min-height: 0;
}
.pdf-lb-loading {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    color: #6b7280;
    font-size: .9rem;
    padding: 60px 0;
}
.pdf-pages-wrapper {
    display: flex;
    flex-direction: column;
    gap: 16px;
    align-items: center;
    width: 100%;
}
.pdf-page-canvas {
    max-width: 100%;
    height: auto;
    display: block;
    box-shadow: 0 4px 20px rgba(0,0,0,.18);
    background: #fff;
    border-radius: 4px;
}

/* Responsive */
@media (max-width: 600px) {
    .pdf-lightbox-container { max-width: 100%; height: 100%; border-radius: 0; }
    .pdf-lightbox-header { padding: 10px 12px; gap: 6px; }
    .pdf-lightbox-title { font-size: .85rem; }
    .pdf-lb-btn { width: 32px; height: 32px; }
    .pdf-lb-btn svg { width: 16px; height: 16px; }
    .pdf-lightbox-body { padding: 12px; }
    .pdf-zoom-level, .pdf-page-info { display: none; }
}
@media (min-width: 900px) {
    .pdf-lightbox-container { margin: 24px; border-radius: 16px; height: calc(100% - 48px); }
}