.fg-flipbook-wrapper {
	margin: 20px auto;
	width: 100%;
	font-family: inherit;
	user-select: none;
	-webkit-user-select: none;
}

.fg-flipbook-viewport {
	position: relative;
	width: 100%;
	perspective: 1800px;
	background: #1b1b1b;
	border-radius: 4px;
	box-shadow: 0 10px 30px rgba(0, 0, 0, .35);
	overflow: hidden;
}

.fg-flipbook-stack {
	position: absolute;
	inset: 0;
}

.fg-page {
	position: absolute;
	inset: 0;
	transform-style: preserve-3d;
	transform-origin: left center;
	transform: rotateY(0deg);
}

/* Végállapot lapozás után - nincs animáció, csak a statikus pozíció. */
.fg-page.fg-flipped {
	transform: rotateY(-180deg);
}

/* Aktívan lapozódó oldal - kulcsképkockás animáció, valódi könyvlap-érzettel:
   lágy gyorsulás-lassulás, és a forgás közepén (élén állva) megjelenő,
   a papír megemelkedését imitáló vetett árnyék. */
.fg-page.fg-anim-next {
	animation: fgFlipNext .9s cubic-bezier(.45, .05, .55, .95) forwards;
	z-index: 1000 !important;
}

.fg-page.fg-anim-prev {
	animation: fgFlipPrev .9s cubic-bezier(.45, .05, .55, .95) forwards;
	z-index: 1000 !important;
}

@keyframes fgFlipNext {
	0% {
		transform: rotateY(0deg);
		box-shadow: 0 0 0 rgba(0, 0, 0, 0);
	}
	50% {
		transform: rotateY(-90deg);
		box-shadow: -35px 0 55px rgba(0, 0, 0, .45);
	}
	100% {
		transform: rotateY(-180deg);
		box-shadow: 0 0 0 rgba(0, 0, 0, 0);
	}
}

@keyframes fgFlipPrev {
	0% {
		transform: rotateY(-180deg);
		box-shadow: 0 0 0 rgba(0, 0, 0, 0);
	}
	50% {
		transform: rotateY(-90deg);
		box-shadow: 35px 0 55px rgba(0, 0, 0, .45);
	}
	100% {
		transform: rotateY(0deg);
		box-shadow: 0 0 0 rgba(0, 0, 0, 0);
	}
}

.fg-page-face {
	position: absolute;
	inset: 0;
	backface-visibility: hidden;
	-webkit-backface-visibility: hidden;
	overflow: hidden;
}

.fg-page-front {
	display: flex;
	align-items: center;
	justify-content: center;
	background: #111;
}

.fg-page-front img {
	width: 100%;
	height: 100%;
	object-fit: contain;
	background: #111;
	pointer-events: none;
}

.fg-page-back {
	transform: rotateY(180deg);
	background: linear-gradient(120deg, #efeae0 0%, #d8d2c4 100%);
}

.fg-page-cover .fg-page-front {
	box-shadow: inset 0 0 0 6px rgba(0, 0, 0, .18);
}

/* A lap "sötétedése" a forgás közepén - mintha a fény megcsillanna a
   megemelkedő papíron. A sáv a gerinc (bal szél) felől indul. */
.fg-page-shade {
	position: absolute;
	inset: 0;
	opacity: 0;
	pointer-events: none;
	background: linear-gradient(90deg, rgba(0, 0, 0, .65) 0%, rgba(0, 0, 0, 0) 55%);
	mix-blend-mode: multiply;
}

.fg-page-shade-back {
	background: linear-gradient(90deg, rgba(0, 0, 0, .65) 0%, rgba(0, 0, 0, 0) 55%);
}

.fg-page.fg-anim-next .fg-page-shade,
.fg-page.fg-anim-prev .fg-page-shade {
	animation: fgShadeSweep .9s ease-in-out forwards;
}

@keyframes fgShadeSweep {
	0% {
		opacity: 0;
	}
	45% {
		opacity: .65;
	}
	55% {
		opacity: .65;
	}
	100% {
		opacity: 0;
	}
}

.fg-nav {
	position: absolute;
	top: 50%;
	transform: translateY(-50%);
	z-index: 1100;
	width: 42px;
	height: 42px;
	border-radius: 50%;
	border: none;
	background: rgba(255, 255, 255, .85);
	color: #222;
	font-size: 16px;
	cursor: pointer;
	display: flex;
	align-items: center;
	justify-content: center;
	box-shadow: 0 2px 8px rgba(0, 0, 0, .25);
	transition: background .2s, opacity .2s;
}

.fg-nav:hover {
	background: #fff;
}

.fg-nav:disabled {
	opacity: .25;
	cursor: default;
}

.fg-nav-prev {
	left: 12px;
}

.fg-nav-next {
	right: 12px;
}

.fg-fullscreen-toggle {
	position: absolute;
	top: 12px;
	right: 12px;
	z-index: 1100;
	width: 34px;
	height: 34px;
	border-radius: 50%;
	border: none;
	background: rgba(255, 255, 255, .85);
	color: #222;
	font-size: 15px;
	cursor: pointer;
	display: flex;
	align-items: center;
	justify-content: center;
	box-shadow: 0 2px 8px rgba(0, 0, 0, .25);
	transition: background .2s;
}

.fg-fullscreen-toggle:hover {
	background: #fff;
}

.fg-flipbook-footer {
	display: flex;
	justify-content: center;
	margin-top: 10px;
	font-size: 14px;
	color: #555;
}

.fg-flipbook-wrapper:fullscreen {
	max-width: 100% !important;
	width: 100%;
	height: 100%;
	display: flex;
	align-items: center;
	justify-content: center;
	background: #000;
}

.fg-flipbook-wrapper:fullscreen .fg-flipbook-viewport {
	width: auto;
	height: 90vh;
	max-width: 95vw;
}

.fg-flipbook-wrapper:fullscreen .fg-flipbook-footer {
	color: #ccc;
}

@media (max-width: 480px) {
	.fg-nav {
		width: 34px;
		height: 34px;
		font-size: 13px;
	}

	.fg-fullscreen-toggle {
		width: 28px;
		height: 28px;
		font-size: 12px;
	}
}