/* =========================================================
   PDF Embed – bkbg-pdf-*
   ========================================================= */

.bkbg-pdf-wrap {
    --bkbg-pdf-radius: 8px;
    --bkbg-pdf-border: #e5e7eb;
    --bkbg-pdf-bw:     1px;
    --bkbg-pdf-bg:     #f9fafb;
    --bkbg-pdf-dl-bg:  #2563eb;
    --bkbg-pdf-dl-clr: #ffffff;
    --bkbg-pdf-width:  100%;

    width: var(--bkbg-pdf-width);
    max-width: 100%;
    box-sizing: border-box;
}

/* ── Viewer ── */
.bkbg-pdf-viewer {
    width: 100%;
    background: var(--bkbg-pdf-bg);
    border: var(--bkbg-pdf-bw) solid var(--bkbg-pdf-border);
    border-radius: var(--bkbg-pdf-radius);
    overflow: hidden;
    position: relative;
}

.bkbg-pdf-iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

/* ── Fallback (inside iframe, not always visible) ── */
.bkbg-pdf-fallback {
    text-align: center;
    padding: 32px 16px;
    color: #6b7280;
    font-size: 14px;
}
.bkbg-pdf-fallback a {
    color: var(--bkbg-pdf-dl-bg);
    font-weight: 600;
}

/* ── Footer with download button ── */
.bkbg-pdf-footer {
    margin-top: 12px;
    display: flex;
    align-items: center;
}

.bkbg-pdf-download {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--bkbg-pdf-dl-bg);
    color: var(--bkbg-pdf-dl-clr);
    padding: 9px 20px;
    border-radius: 6px;
    font-family: var(--bkbg-pdf-dl-ff, inherit);
    font-size: var(--bkbg-pdf-dl-fs, 14px);
    font-weight: var(--bkbg-pdf-dl-fw, 600);
    font-style: var(--bkbg-pdf-dl-fst, normal);
    text-decoration: var(--bkbg-pdf-dl-td, none);
    text-transform: var(--bkbg-pdf-dl-tt, none);
    letter-spacing: var(--bkbg-pdf-dl-ls, normal);
    line-height: var(--bkbg-pdf-dl-lh, 1.4);
    transition: opacity 0.2s;
}
.bkbg-pdf-download:hover {
    opacity: 0.85;
    color: var(--bkbg-pdf-dl-clr);
}

.bkbg-pdf-dl-icon {
    width: 18px;
    height: 18px;
    fill: currentColor;
    flex-shrink: 0;
}

@media (max-width: 1024px) {
    .bkbg-pdf-download { font-size: var(--bkbg-pdf-dl-fs-tab, var(--bkbg-pdf-dl-fs, 14px)); }
}
@media (max-width: 767px) {
    .bkbg-pdf-download { font-size: var(--bkbg-pdf-dl-fs-mob, var(--bkbg-pdf-dl-fs-tab, var(--bkbg-pdf-dl-fs, 14px))); }
}

/* ── Placeholder (editor only) ── */
.bkbg-pdf-placeholder {
    border: 2px dashed #d1d5db;
    border-radius: var(--bkbg-pdf-radius);
    background: #f9fafb;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 48px 24px;
    text-align: center;
    color: #6b7280;
    font-size: 14px;
}

.bkbg-pdf-placeholder-icon {
    opacity: 0.35;
}
.bkbg-pdf-placeholder-icon svg {
    width: 48px;
    height: 48px;
}

.bkbg-pdf-no-source {
    text-align: center;
    color: #9ca3af;
    font-size: 14px;
    padding: 24px;
}