/* DR 3D Flipbook — front-end styles */

.drfb { position: relative; margin: 0 auto; max-width: 100%; }
.drfb * { box-sizing: border-box; }

.drfb-notice { padding: 12px 16px; background: #fff3cd; color: #664d03; border: 1px solid #ffecb5; border-radius: 6px; font-size: 14px; }

/* ---------- Placeholder (before JS) ---------- */
.drfb-placeholder { position: relative; width: 100%; min-height: 320px; aspect-ratio: 16 / 10; display: flex; align-items: center; justify-content: center; color: #fff; }

/* ---------- Container ---------- */
.drfb-container {
	--drfb-bg: #777;
	--drfb-bg-image: none;
	--drfb-ctrl-bg: rgba(255, 255, 255, 0.96);
	--drfb-ctrl-color: #333;
	--drfb-ctrl-hover: #0a84ff;
	--drfb-nav-color: rgba(255, 255, 255, 0.85);
	--drfb-duration: 800ms;
	position: relative;
	width: 100%;
	height: 600px;
	overflow: hidden;
	background: var(--drfb-bg-image) center / cover no-repeat, var(--drfb-bg);
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
	font-size: 14px;
	line-height: 1.3;
	color: #333;
	outline: none;
	user-select: none;
	-webkit-user-select: none;
	-webkit-tap-highlight-color: transparent;
}
.drfb-container.drfb-is-fullscreen,
.drfb-container.drfb-fullscreen-fallback { height: 100% !important; width: 100%; }
.drfb-container.drfb-fullscreen-fallback { position: fixed; inset: 0; z-index: 99999; height: 100vh !important; height: 100dvh !important; }
.drfb-container:-webkit-full-screen { width: 100%; height: 100% !important; }

.drfb-stage { position: absolute; inset: 0; }

.drfb-viewport {
	position: absolute; inset: 0;
	overflow: hidden;
	display: flex; align-items: center; justify-content: center;
	touch-action: pan-y;
}
.drfb-zoomed .drfb-viewport { overflow: auto; display: block; touch-action: pan-x pan-y; scrollbar-width: thin; }
.drfb-zoom-sizer { position: relative; flex: none; margin: auto; }
.drfb-zoom-inner { position: absolute; left: 0; top: 0; transform-origin: 0 0; }

.drfb-book { position: relative; }
.drfb-book .stf__wrapper { height: 100%; }
.drfb-rtl .drfb-book { transform: scaleX(-1); }
.drfb-rtl .drfb-page-inner { transform: scaleX(-1); }

/* Pan layer appears only when zoomed */
.drfb-pan { display: none; position: absolute; inset: 0; z-index: 5; cursor: grab; }
.drfb-zoomed .drfb-pan { display: block; }
.drfb-pan.is-dragging { cursor: grabbing; }
.drfb-zoomed .drfb-pan { position: sticky; top: 0; left: 0; width: 100%; height: 100%; margin-top: -100%; }
/* Simpler: make the pan layer cover the scrolled content instead of sticky tricks */
.drfb-zoomed .drfb-pan { position: absolute; inset: 0; margin: 0; width: auto; height: auto; }
.drfb-zoomed .drfb-zoom-sizer { pointer-events: none; }
.drfb-zoomed .drfb-zoom-sizer a.drfb-link { pointer-events: auto; }

/* ---------- Pages ---------- */
.drfb-page {
	background: #fff;
	overflow: hidden;
	box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.06);
}
.drfb-page-inner { position: relative; width: 100%; height: 100%; background: #fdfdfd; }
.drfb-page-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: fill; display: block; opacity: 0; transition: opacity 0.25s; pointer-events: none; }
.drfb-page.is-rendered .drfb-page-img { opacity: 1; }
.drfb-page-num { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); font-size: 28px; color: rgba(0, 0, 0, 0.12); font-weight: 600; pointer-events: none; }
.drfb-page.is-rendered .drfb-page-num { display: none; }
/* Subtle spine shading on inner pages */
.drfb-page.--left .drfb-page-inner::after,
.drfb-page.--right .drfb-page-inner::after { content: ""; position: absolute; top: 0; bottom: 0; width: 7%; pointer-events: none; }
.drfb-page.--left .drfb-page-inner::after { right: 0; background: linear-gradient(to right, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.08) 100%); }
.drfb-page.--right .drfb-page-inner::after { left: 0; background: linear-gradient(to left, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.08) 100%); }
.drfb-page.--hard { box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.1), 0 2px 10px rgba(0, 0, 0, 0.25); }
.drfb-page-links { position: absolute; inset: 0; pointer-events: none; }
.drfb-link { position: absolute; display: block; pointer-events: auto; cursor: pointer; border-radius: 2px; }
.drfb-link:hover { background: rgba(10, 132, 255, 0.15); box-shadow: 0 0 0 1px rgba(10, 132, 255, 0.4); }

/* ---------- Nav arrows ---------- */
.drfb-btn { appearance: none; -webkit-appearance: none; border: 0; background: transparent; padding: 0; margin: 0; cursor: pointer; color: inherit; font: inherit; line-height: 0; display: inline-flex; align-items: center; justify-content: center; }
.drfb-btn svg { width: 22px; height: 22px; display: block; }
.drfb-btn:disabled { opacity: 0.35; cursor: default; }

.drfb-nav {
	position: absolute; top: 50%; transform: translateY(-50%);
	width: 48px; height: 64px; z-index: 6;
	color: var(--drfb-nav-color);
	border-radius: 6px;
	opacity: 0.85; transition: opacity 0.2s, background 0.2s;
}
.drfb-nav svg { width: 40px; height: 40px; filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.5)); }
.drfb-nav:hover { opacity: 1; background: rgba(0, 0, 0, 0.18); }
.drfb-nav.is-disabled { opacity: 0.15; pointer-events: none; }
.drfb-nav-prev { left: 4px; }
.drfb-nav-next { right: 4px; }
.drfb-rtl .drfb-nav-prev { left: auto; right: 4px; }
.drfb-rtl .drfb-nav-next { right: auto; left: 4px; }
.drfb-rtl .drfb-nav-prev svg, .drfb-rtl .drfb-nav-next svg { transform: scaleX(-1); }
.drfb-controls-top .drfb-nav { margin-top: 28px; }
.drfb-controls-bottom .drfb-nav { margin-top: -28px; }

/* ---------- Loading ---------- */
.drfb-loading { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px; color: #fff; z-index: 7; text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4); font-size: 14px; pointer-events: none; }
.drfb-loading[hidden] { display: none; }
.drfb-spinner { width: 40px; height: 40px; border-radius: 50%; border: 3px solid rgba(255, 255, 255, 0.3); border-top-color: #fff; animation: drfb-spin 0.9s linear infinite; }
@keyframes drfb-spin { to { transform: rotate(360deg); } }
.drfb-error { background: rgba(0, 0, 0, 0.5); padding: 10px 16px; border-radius: 6px; pointer-events: auto; }

/* ---------- Controls bar ---------- */
.drfb-controls {
	position: absolute; left: 50%; transform: translateX(-50%);
	bottom: 10px; z-index: 20;
	display: flex; align-items: center; gap: 2px;
	padding: 4px 6px;
	background: var(--drfb-ctrl-bg);
	color: var(--drfb-ctrl-color);
	border-radius: 8px;
	box-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
	max-width: calc(100% - 16px);
}
.drfb-controls-top .drfb-controls { bottom: auto; top: 10px; }
.drfb-controls[hidden] { display: none; }
.drfb-controls .drfb-btn { width: 36px; height: 36px; border-radius: 6px; color: var(--drfb-ctrl-color); transition: background 0.15s, color 0.15s; }
.drfb-controls .drfb-btn:hover:not(:disabled), .drfb-controls .drfb-btn.is-active { background: rgba(0, 0, 0, 0.07); color: var(--drfb-ctrl-hover); }
.drfb-controls .drfb-btn.is-empty { opacity: 0.4; }
.drfb-page-number { display: flex; align-items: center; height: 36px; padding: 0 8px 0 4px; margin-right: 4px; border-right: 1px solid rgba(0, 0, 0, 0.1); font-size: 13px; color: #555; white-space: nowrap; }
.drfb-page-input { width: 3.2em; min-width: 2.4em; height: 28px; padding: 0 4px; border: 1px solid rgba(0, 0, 0, 0.12); border-radius: 4px; background: #fff; color: #333; text-align: center; font: inherit; font-size: 13px; }
.drfb-page-input:focus { outline: 2px solid var(--drfb-ctrl-hover); outline-offset: -1px; }
.drfb-page-total { margin-left: 2px; }

/* More menu */
.drfb-more { position: relative; }
.drfb-more-menu { display: none; position: absolute; right: 0; bottom: calc(100% + 10px); min-width: 210px; background: var(--drfb-ctrl-bg); border-radius: 8px; box-shadow: 0 4px 18px rgba(0, 0, 0, 0.3); padding: 6px; z-index: 30; }
.drfb-controls-top .drfb-more-menu { bottom: auto; top: calc(100% + 10px); }
.drfb-more.is-open .drfb-more-menu { display: block; }
.drfb-more-item { display: flex; align-items: center; gap: 10px; width: 100%; padding: 8px 10px; border: 0; background: transparent; color: var(--drfb-ctrl-color); font: inherit; font-size: 13px; text-align: left; cursor: pointer; border-radius: 6px; text-decoration: none; line-height: 1.2; }
.drfb-more-item:hover { background: rgba(0, 0, 0, 0.07); color: var(--drfb-ctrl-hover); }
.drfb-more-item .drfb-ico { display: inline-flex; width: 20px; height: 20px; flex: none; }
.drfb-more-item .drfb-ico svg { width: 20px; height: 20px; }

/* ---------- Sidebars ---------- */
.drfb-sidebar {
	position: absolute; top: 0; bottom: 0; left: 0; width: 230px; max-width: 85%;
	background: rgba(28, 28, 30, 0.96); color: #eee;
	transform: translateX(-100%); transition: transform 0.25s ease;
	z-index: 15; display: flex; flex-direction: column;
	box-shadow: 4px 0 18px rgba(0, 0, 0, 0.3);
}
.drfb-sidebar.is-open { transform: translateX(0); }
.drfb-sidebar-head { display: flex; align-items: center; justify-content: space-between; padding: 10px 8px 10px 14px; font-weight: 600; font-size: 13px; letter-spacing: 0.02em; text-transform: uppercase; color: #bbb; border-bottom: 1px solid rgba(255, 255, 255, 0.08); flex: none; }
.drfb-sidebar-close { width: 30px; height: 30px; color: #bbb; border-radius: 6px; }
.drfb-sidebar-close:hover { background: rgba(255, 255, 255, 0.1); color: #fff; }

.drfb-thumb-list { flex: 1; overflow-y: auto; padding: 12px; display: flex; flex-direction: column; gap: 12px; scrollbar-width: thin; }
.drfb-thumb { position: relative; width: 100%; background: #444; border-radius: 3px; cursor: pointer; overflow: hidden; box-shadow: 0 1px 4px rgba(0, 0, 0, 0.5); outline: 2px solid transparent; outline-offset: 2px; transition: outline-color 0.15s; flex: none; }
.drfb-thumb img { display: block; width: 100%; height: 100%; object-fit: fill; }
.drfb-thumb:hover { outline-color: rgba(255, 255, 255, 0.5); }
.drfb-thumb.is-active { outline-color: #0a84ff; }
.drfb-thumb-num { position: absolute; left: 6px; bottom: 6px; padding: 2px 7px; background: rgba(0, 0, 0, 0.65); color: #fff; font-size: 11px; border-radius: 10px; }

.drfb-outline { width: 300px; }
.drfb-outline-list { list-style: none; margin: 0; padding: 8px 0; overflow-y: auto; flex: 1; scrollbar-width: thin; }
.drfb-outline-list .drfb-outline-list { padding: 0; display: none; overflow: visible; }
.drfb-outline-item.is-open > .drfb-outline-list { display: block; }
.drfb-outline-row { display: flex; align-items: stretch; }
.drfb-outline-toggle, .drfb-outline-spacer { flex: none; width: 24px; display: inline-flex; align-items: center; justify-content: center; background: transparent; border: 0; color: #999; cursor: pointer; padding: 0; }
.drfb-outline-toggle svg { width: 16px; height: 16px; transition: transform 0.15s; }
.drfb-outline-item.is-open > .drfb-outline-row .drfb-outline-toggle svg { transform: rotate(90deg); }
.drfb-outline-link { flex: 1; display: flex; justify-content: space-between; gap: 10px; padding: 7px 12px 7px 0; color: #e5e5e5; text-decoration: none; font-size: 13px; line-height: 1.35; }
.drfb-outline-link:hover { color: #fff; background: rgba(255, 255, 255, 0.06); }
.drfb-outline-page { color: #888; font-size: 12px; flex: none; }
.drfb-depth-1 .drfb-outline-row { padding-left: 16px; }
.drfb-depth-2 .drfb-outline-row { padding-left: 32px; }
.drfb-depth-3 .drfb-outline-row { padding-left: 48px; }
.drfb-outline-empty { padding: 16px; color: #999; font-size: 13px; margin: 0; }

/* ---------- Share panel ---------- */
.drfb-share-panel { display: none; position: absolute; left: 50%; bottom: 66px; transform: translateX(-50%); width: 340px; max-width: calc(100% - 24px); background: var(--drfb-ctrl-bg); color: var(--drfb-ctrl-color); border-radius: 10px; box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35); padding: 14px; z-index: 25; }
.drfb-controls-top .drfb-share-panel { bottom: auto; top: 66px; }
.drfb-share-panel.is-open { display: block; }
.drfb-share-head { font-weight: 600; margin-bottom: 10px; font-size: 14px; }
.drfb-share-row { display: flex; gap: 6px; }
.drfb-share-row input { flex: 1; min-width: 0; height: 34px; padding: 0 8px; border: 1px solid rgba(0, 0, 0, 0.15); border-radius: 6px; font: inherit; font-size: 12px; color: #333; background: #fff; }
.drfb-share-copy { width: 34px; height: 34px; border-radius: 6px; background: rgba(0, 0, 0, 0.06); }
.drfb-share-copy:hover { background: var(--drfb-ctrl-hover); color: #fff; }
.drfb-share-panel.is-copied .drfb-share-copy { background: #28a745; color: #fff; }
.drfb-share-social { display: flex; gap: 8px; margin-top: 12px; }
.drfb-share-social a { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; border-radius: 50%; background: rgba(0, 0, 0, 0.06); color: #444; transition: background 0.15s, color 0.15s; }
.drfb-share-social a:hover { background: var(--drfb-ctrl-hover); color: #fff; }
.drfb-share-social svg { width: 20px; height: 20px; }

/* ---------- Popup mode ---------- */
.drfb-mode-popup { display: inline-block; vertical-align: top; }
.drfb-popup-trigger { display: block; text-decoration: none; color: inherit; width: 100%; }
.drfb-popup-cover { position: relative; display: block; border-radius: 4px; overflow: hidden; box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25); transition: transform 0.2s, box-shadow 0.2s; background: #ddd; }
.drfb-popup-cover img { display: block; width: 100%; height: auto; }
.drfb-popup-cover-placeholder { display: flex; align-items: center; justify-content: center; aspect-ratio: 0.72; padding: 16px; text-align: center; font-weight: 600; color: #555; background: linear-gradient(135deg, #eee, #ccc); }
.drfb-popup-open { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%) scale(0.9); padding: 8px 18px; background: rgba(0, 0, 0, 0.7); color: #fff; border-radius: 20px; font-size: 13px; font-weight: 600; opacity: 0; transition: opacity 0.2s, transform 0.2s; }
.drfb-popup-trigger:hover .drfb-popup-cover { transform: translateY(-3px); box-shadow: 0 10px 24px rgba(0, 0, 0, 0.3); }
.drfb-popup-trigger:hover .drfb-popup-open { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.drfb-popup-title { display: block; margin-top: 10px; text-align: center; font-size: 14px; font-weight: 600; line-height: 1.3; }

.drfb-lightbox { position: fixed; inset: 0; z-index: 999999; background: rgba(0, 0, 0, 0.9); display: none; }
.drfb-lightbox.is-open { display: block; }
.drfb-lightbox .drfb-container { position: absolute; inset: 0; height: 100% !important; }
.drfb-lightbox-close { position: absolute; top: 10px; right: 10px; z-index: 1000000; width: 40px; height: 40px; border: 0; border-radius: 50%; background: rgba(0, 0, 0, 0.55); color: #fff; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; padding: 0; }
.drfb-lightbox-close svg { width: 22px; height: 22px; }
.drfb-lightbox-close:hover { background: rgba(255, 255, 255, 0.2); }
body.drfb-lightbox-open { overflow: hidden; }

/* ---------- Bookshelf ---------- */
.drfb-shelf { display: grid; gap: 28px; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.drfb-shelf-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.drfb-shelf-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.drfb-shelf-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.drfb-shelf-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.drfb-shelf-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.drfb-shelf-cols-7 { grid-template-columns: repeat(7, minmax(0, 1fr)); }
.drfb-shelf-cols-8 { grid-template-columns: repeat(8, minmax(0, 1fr)); }
.drfb-shelf .drfb-mode-popup { display: block; }
.drfb-shelf .drfb-popup-trigger { max-width: none !important; }
@media (max-width: 782px) { .drfb-shelf { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; } }

/* ---------- Mobile ---------- */
@media (max-width: 600px) {
	.drfb-controls { gap: 0; padding: 3px 4px; }
	.drfb-controls .drfb-btn { width: 32px; height: 32px; }
	.drfb-controls .drfb-btn svg { width: 20px; height: 20px; }
	.drfb-page-number { padding: 0 6px 0 2px; font-size: 12px; }
	.drfb-nav { width: 36px; }
	.drfb-nav svg { width: 30px; height: 30px; }
	.drfb-sidebar { width: 200px; }
	.drfb-outline { width: 260px; }
}
@media (prefers-reduced-motion: reduce) {
	.drfb-sidebar, .drfb-popup-cover, .drfb-popup-open { transition: none; }
}

/* ======================================================================
   Pro features
   ====================================================================== */

/* ---------- Realistic book: shadow, page edges, spine ---------- */
.drfb-decor { position: absolute; inset: 0; pointer-events: none; }
.drfb-book-shadow { position: absolute; box-shadow: 0 14px 34px rgba(0, 0, 0, 0.45), 0 2px 6px rgba(0, 0, 0, 0.3); background: #fff; }
.drfb-cover-realistic .drfb-book-shadow { box-shadow: 0 18px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0, 0, 0, 0.25); }
.drfb-edge { position: absolute; background: repeating-linear-gradient(to right, #fdfdfd 0, #fdfdfd 1px, #cfcfcf 1px, #cfcfcf 2px); box-shadow: 0 2px 4px rgba(0, 0, 0, 0.25); }
.drfb-edge-left { border-radius: 2px 0 0 2px; transform-origin: right center; transform: skewY(-1.2deg); }
.drfb-edge-right { border-radius: 0 2px 2px 0; transform-origin: left center; transform: skewY(1.2deg); }
.drfb-cover-realistic .drfb-page.--hard .drfb-page-inner { box-shadow: inset 0 0 0 2px rgba(0, 0, 0, 0.25), inset 0 0 18px rgba(0, 0, 0, 0.18); }
.drfb-cover-realistic .drfb-page.--hard { border-radius: 2px; }
.drfb-cover-realistic .drfb-page.--hard.--left { border-radius: 4px 0 0 4px; }
.drfb-cover-realistic .drfb-page.--hard.--right { border-radius: 0 4px 4px 0; }
.drfb-cover-realistic .drfb-page.--soft.--left .drfb-page-inner::after,
.drfb-cover-realistic .drfb-page.--soft.--right .drfb-page-inner::after { width: 9%; }

/* ---------- Spiral binding ---------- */
.drfb-spiral { position: absolute; width: 28px; display: flex; flex-direction: column; justify-content: space-evenly; align-items: center; z-index: 999; pointer-events: none; }
.drfb-spiral span { display: block; width: 26px; height: 11px; border: 3px solid #8a8a8a; border-radius: 7px; background: linear-gradient(180deg, #ddd, #9a9a9a); box-shadow: 0 1px 2px rgba(0, 0, 0, 0.5), inset 0 1px 1px rgba(255, 255, 255, 0.7); box-sizing: border-box; }
.drfb-spiral span::before { content: ""; display: block; width: 6px; height: 6px; margin: 0 auto; border-radius: 50%; background: rgba(0, 0, 0, 0.55); position: relative; top: -1px; }

/* ---------- Slider & scroll view modes ---------- */
.drfb-view-slider .drfb-book, .drfb-view-scroll .drfb-book { overflow: hidden; }
.drfb-view-slider .drfb-pages { display: flex; height: 100%; width: 100%; transition: transform 0.45s cubic-bezier(0.22, 0.61, 0.36, 1); }
.drfb-view-slider .drfb-slot { flex: 0 0 100%; width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; }
.drfb-view-slider .drfb-page { position: relative; width: var(--drfb-slide-w, 100%); max-width: 100%; aspect-ratio: auto; height: 100%; max-height: 100%; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4); }
.drfb-view-slider .drfb-page .drfb-page-inner { height: 100%; }
.drfb-view-slider .drfb-page-img { position: absolute; inset: 0; object-fit: contain; }
.drfb-view-scroll .drfb-book { overflow: auto; scrollbar-width: thin; }
.drfb-view-scroll .drfb-pages { margin: 0 auto; padding: 8px 0; display: flex; flex-direction: column; gap: 14px; }
.drfb-view-scroll .drfb-slot { width: 100%; }
.drfb-view-scroll .drfb-page { position: relative; width: 100%; box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35); }
.drfb-view-scroll .drfb-page-inner { position: relative; width: 100%; height: auto; }
.drfb-view-scroll .drfb-page-img { position: relative; width: 100%; height: auto; }
.drfb-view-scroll .drfb-page-inner::before { content: ""; display: block; padding-bottom: calc(100% / var(--drfb-ratio, 0.7)); }
.drfb-view-scroll .drfb-page.is-rendered .drfb-page-inner::before { display: none; }
.drfb-view-scroll .drfb-page-num { display: block; }
.drfb-view-scroll .drfb-page.is-rendered .drfb-page-num { display: none; }
.drfb-view-scroll .drfb-nav { display: none; }
.drfb-view-scroll .drfb-pan, .drfb-view-scroll.drfb-zoomed .drfb-pan { display: none; }
.drfb-view-scroll.drfb-zoomed .drfb-viewport { overflow: hidden; display: flex; }

/* ---------- Search panel ---------- */
.drfb-search { width: 320px; }
.drfb-search-form { display: flex; gap: 6px; padding: 10px 12px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); flex: none; }
.drfb-search-form input { flex: 1; min-width: 0; height: 34px; padding: 0 10px; border-radius: 6px; border: 1px solid rgba(255, 255, 255, 0.15); background: rgba(255, 255, 255, 0.08); color: #fff; font: inherit; font-size: 13px; }
.drfb-search-form input::placeholder { color: #999; }
.drfb-search-form .drfb-btn { width: 36px; height: 34px; border-radius: 6px; background: #0a84ff; color: #fff; }
.drfb-search-status { padding: 8px 14px; color: #aaa; font-size: 12px; flex: none; }
.drfb-search-results { flex: 1; overflow-y: auto; scrollbar-width: thin; }
.drfb-search-item { display: block; width: 100%; text-align: left; padding: 8px 14px; border: 0; border-bottom: 1px solid rgba(255, 255, 255, 0.06); background: transparent; color: #e5e5e5; font: inherit; font-size: 12.5px; line-height: 1.4; cursor: pointer; }
.drfb-search-item:hover { background: rgba(255, 255, 255, 0.07); }
.drfb-search-page { display: block; font-weight: 600; color: #8ab4ff; font-size: 11px; margin-bottom: 2px; }
.drfb-search-snippet mark { background: #ffe66d; color: #222; padding: 0 2px; border-radius: 2px; }

/* ---------- Popup triggers ---------- */
.drfb-virtual { display: none; }
.drfb-trigger-button { display: inline-block; padding: 12px 22px; background: #8b1a1a; color: #fff !important; border-radius: 6px; font-weight: 600; text-decoration: none !important; line-height: 1.2; transition: filter 0.15s, transform 0.15s; }
.drfb-trigger-button:hover { filter: brightness(1.1); transform: translateY(-1px); }
.drfb-trigger-link { text-decoration: underline; }
.drfb-trigger-image img { display: block; max-width: 100%; height: auto; cursor: pointer; transition: transform 0.2s; }
.drfb-trigger-image:hover img { transform: translateY(-3px); }
.drfb-mode-popup:has(> .drfb-trigger-button) { display: inline-block; vertical-align: middle; }
.drfb-mode-popup:has(> .drfb-trigger-link) { display: inline; }
.drfb-trigger-link, .drfb-trigger-button { display: inline-block; }

/* 3D cover for popup thumbnails */
.drfb-popup-cover.drfb-cover-3d { border-radius: 3px 8px 8px 3px; box-shadow: inset 4px 0 6px -4px rgba(0, 0, 0, 0.5), 0 6px 16px rgba(0, 0, 0, 0.35); transform: perspective(900px) rotateY(-12deg); transform-origin: left center; transition: transform 0.25s, box-shadow 0.25s; }
.drfb-popup-cover.drfb-cover-3d::after { content: ""; position: absolute; top: 2%; bottom: 2%; right: -8px; width: 8px; background: repeating-linear-gradient(to bottom, #fff 0 2px, #d6d6d6 2px 3px); transform: skewY(0deg); border-radius: 0 2px 2px 0; box-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3); }
.drfb-popup-cover.drfb-cover-3d::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(0, 0, 0, 0.25) 0, rgba(0, 0, 0, 0) 6%, rgba(255, 255, 255, 0.12) 7%, rgba(255, 255, 255, 0) 12%); pointer-events: none; z-index: 1; }
.drfb-popup-trigger:hover .drfb-popup-cover.drfb-cover-3d { transform: perspective(900px) rotateY(-4deg) translateY(-4px); box-shadow: inset 4px 0 6px -4px rgba(0, 0, 0, 0.5), 0 14px 28px rgba(0, 0, 0, 0.4); }

/* ---------- Wooden bookshelf ---------- */
.drfb-shelf-shelf { gap: 0 32px; row-gap: 56px; padding: 24px 24px 0; background: linear-gradient(180deg, #f3ece2, #e7dccb); border-radius: 8px; }
.drfb-shelf-shelf .drfb-shelf-item { position: relative; padding: 0 0 22px; display: flex; align-items: flex-end; justify-content: center; }
.drfb-shelf-shelf { overflow: hidden; }
.drfb-shelf-shelf .drfb-shelf-item::before { content: ""; position: absolute; left: -2000px; right: -2000px; bottom: 0; height: 18px; background: linear-gradient(180deg, #a86f3b 0, #8c5a2b 45%, #6d4320 100%); box-shadow: 0 10px 14px rgba(0, 0, 0, 0.35), inset 0 2px 0 rgba(255, 255, 255, 0.25); border-radius: 2px; z-index: 0; }
.drfb-shelf-shelf .drfb-shelf-item::after { content: ""; position: absolute; left: -2000px; right: -2000px; bottom: 18px; height: 10px; background: linear-gradient(180deg, rgba(0, 0, 0, 0) 0, rgba(0, 0, 0, 0.22) 100%); z-index: 0; }
.drfb-shelf-shelf .drfb { position: relative; z-index: 1; }
.drfb-shelf-shelf .drfb-popup-trigger { max-width: 180px !important; }
.drfb-shelf-shelf .drfb-popup-title { color: #4a3b2b; }
@media (max-width: 782px) { .drfb-shelf-shelf { gap: 0 16px; row-gap: 40px; padding: 16px 16px 0; } }