.contentIframeClass {
	width: 100%;
	height: 100%;
	position: absolute;
	border: none;
}
.dummyIFrameClass {
	display: none;
}
.prev, .next {
	cursor: pointer;
	position: absolute;
	top: 0;
	bottom: 0;
	width: 80px;
	display: flex;
	align-items: center;
	justify-content: center;
	color: rgba(0, 0, 0, 0.4);
	font-weight: bold;
	font-size: 40px;
	visibility: hidden;
	transition: background-color 0.2s ease, color 0.2s ease;
	user-select: none;
	z-index: 10;
}
.prev {
	left: 0;
}
.next {
	right: 0;
}
.prev:hover, .next:hover {
	background-color: rgba(0, 0, 0, 0.05);
	color: rgba(0, 0, 0, 0.8);
}
html, body {
	margin: 0;
	overflow: hidden
}

.progressbar-container {
	position: absolute;
	bottom: 25px;
	left: 50%;
	transform: translateX(-50%);
	width: 90%;
	max-width: 800px;
	display: flex;
	flex-direction: column;
	align-items: center;
	z-index: 100;
	user-select: none;
}
#pageSlider {
	width: 100%;
	-webkit-appearance: none;
	background: rgba(0, 0, 0, 0.15);
	height: 4px;
	border-radius: 2px;
	outline: none;
	cursor: pointer;
	margin: 0;
	padding: 0;
}
/* Custom slider thumb styling (Webkit) */
#pageSlider::-webkit-slider-thumb {
	-webkit-appearance: none;
	appearance: none;
	width: 14px;
	height: 14px;
	border-radius: 50%;
	background: #71B79C;
	cursor: pointer;
	transition: transform 0.1s ease;
}
#pageSlider::-webkit-slider-thumb:hover {
	transform: scale(1.2);
}
/* Custom slider thumb styling (Firefox) */
#pageSlider::-moz-range-thumb {
	width: 14px;
	height: 14px;
	border: none;
	border-radius: 50%;
	background: #71B79C;
	cursor: pointer;
	transition: transform 0.1s ease;
}
#pageSlider::-moz-range-thumb:hover {
	transform: scale(1.2);
}
#pageNumberDisplay {
	margin-top: 8px;
	font-size: 16px;
	color: #333;
	font-family: "a-otf-ud-shin-go-pr6n", sans-serif;
	font-weight: 300;
	letter-spacing: 0.05em;
}

.section-nav-container {
	position: absolute;
	top: 20px;
	left: 50%;
	transform: translateX(-50%);
	display: flex;
	gap: 16px;
	z-index: 100;
	user-select: none;
}
.section-nav-button {
	cursor: pointer;
	font-size: 13px;
	color: #666;
	font-family: "a-otf-ud-shin-go-pr6n", sans-serif;
	font-weight: 300;
	letter-spacing: 0.05em;
	padding: 4px 10px;
	border-radius: 4px;
	transition: background-color 0.2s ease, color 0.2s ease;
}
.section-nav-button:hover {
	background-color: rgba(0, 0, 0, 0.04);
	color: #71B79C;
}
.section-nav-button.active {
	color: #71B79C;
	background-color: rgba(113, 183, 156, 0.06);
	font-weight: 300;
	border-bottom: 2px solid #71B79C;
	border-radius: 4px 4px 0 0;
}

.mutual-link-container {
	position: absolute;
	top: 62px;
	display: flex;
	gap: 12px;
	z-index: 100;
	user-select: none;
}
.mutual-link-container.left {
	left: 25%;
	transform: translateX(-50%);
}
.mutual-link-container.right {
	left: 75%;
	transform: translateX(-50%);
}
.mutual-link-btn {
	cursor: pointer;
	background-color: rgba(113, 183, 156, 0.05);
	color: #71B79C;
	border: 1px solid rgba(113, 183, 156, 0.3);
	padding: 4px 10px;
	border-radius: 4px;
	font-size: 11px;
	font-family: "a-otf-ud-shin-go-pr6n", sans-serif;
	font-weight: 300;
	letter-spacing: 0.05em;
	transition: background-color 0.2s ease, opacity 0.15s ease;
}
.mutual-link-btn:hover {
	background-color: rgba(113, 183, 156, 0.12);
}
.mutual-link-btn:active {
	opacity: 0.5;
}

/* Mobile responsive adjustments (width <= 600px) */
@media (max-width: 600px) {
	.section-nav-container {
		top: 15px;
		width: 95%;
		gap: 6px;
	}
	.section-nav-button {
		font-size: 14px;
		padding: 4px 8px;
	}
	.progressbar-container {
		bottom: 15px;
		width: 92%;
	}
	#pageNumberDisplay {
		font-size: 17px;
		margin-top: 6px;
	}
	
	/* Enlarged touch target for range slider thumb on mobile */
	#pageSlider::-webkit-slider-thumb {
		width: 22px;
		height: 22px;
	}
	#pageSlider::-moz-range-thumb {
		width: 22px;
		height: 22px;
	}
	
	.mutual-link-container {
		top: 52px;
		width: 95%;
		justify-content: center;
		left: 50% !important;
		transform: translateX(-50%) !important;
		gap: 8px;
	}
	.mutual-link-btn {
		font-size: 11px;
		padding: 4px 8px;
	}
}