/**
 * Tokutei Vocabulary V2 - Irodori Navigation Style
 * Navigation pages (Home, Category, Level, Textbook) styled like Irodori textbook
 * Contains own theme definitions for standalone use
 *
 * @package TokuteiVocabulary
 * @since 2.1.0
 */

/* ============================================================================
   IRODORI COLOR PALETTE - Same as irodori-table.css for consistency
   ============================================================================ */

:root {
	/* Default theme colors */
	--irodori-primary: #8B7355;
	--irodori-primary-light: #A89078;
	--irodori-primary-dark: #5D4E37;
	--irodori-primary-pale: #EFEBE9;

	/* Text colors */
	--irodori-text: #1A1A1A;
	--irodori-text-secondary: #4A4A4A;
	--irodori-text-muted: #777777;

	/* Background colors */
	--irodori-bg-light: #FDFEFE;
	--irodori-bg-warm: #FEF9E7;
	--irodori-bg-green-light: #F5F5F5;
	--irodori-bg-green-pale: #FAFAFA;

	/* Border colors */
	--irodori-border: #D0C8C0;
	--irodori-border-light: #E8E4E0;
	--irodori-border-strong: #8B7355;
}

/* ============================================================================
   THEME COLORS - 8 Irodori themes
   ============================================================================ */

/* Theme 1: Purple */
.tvoc2-theme-purple {
	--irodori-primary: #6B4C9A;
	--irodori-primary-light: #9575CD;
	--irodori-primary-dark: #4A2C7A;
	--irodori-primary-pale: #EDE7F6;
	--irodori-bg-green-light: #F3E5F5;
	--irodori-bg-green-pale: #F8F4FC;
	--irodori-border: #D1C4E9;
	--irodori-border-light: #E8E0F0;
	--irodori-border-strong: #6B4C9A;
}

/* Theme 2: Orange */
.tvoc2-theme-orange {
	--irodori-primary: #E67E22;
	--irodori-primary-light: #F5A623;
	--irodori-primary-dark: #D35400;
	--irodori-primary-pale: #FFF3E0;
	--irodori-bg-green-light: #FFF8E1;
	--irodori-bg-green-pale: #FFFCF0;
	--irodori-border: #FFE0B2;
	--irodori-border-light: #FFF0D6;
	--irodori-border-strong: #E67E22;
}

/* Theme 3: Navy */
.tvoc2-theme-navy {
	--irodori-primary: #34495E;
	--irodori-primary-light: #5D6D7E;
	--irodori-primary-dark: #2C3E50;
	--irodori-primary-pale: #ECEFF1;
	--irodori-bg-green-light: #ECEFF1;
	--irodori-bg-green-pale: #F5F7F8;
	--irodori-border: #CFD8DC;
	--irodori-border-light: #E8EAEC;
	--irodori-border-strong: #34495E;
}

/* Theme 4: Brown */
.tvoc2-theme-brown {
	--irodori-primary: #8B7355;
	--irodori-primary-light: #A89078;
	--irodori-primary-dark: #5D4E37;
	--irodori-primary-pale: #EFEBE9;
	--irodori-bg-green-light: #EFEBE9;
	--irodori-bg-green-pale: #FAF8F6;
	--irodori-border: #D7CCC8;
	--irodori-border-light: #EBE6E3;
	--irodori-border-strong: #8B7355;
}

/* Theme 5: Teal */
.tvoc2-theme-teal {
	--irodori-primary: #00897B;
	--irodori-primary-light: #4DB6AC;
	--irodori-primary-dark: #00695C;
	--irodori-primary-pale: #E0F2F1;
	--irodori-bg-green-light: #E0F2F1;
	--irodori-bg-green-pale: #F0FAF9;
	--irodori-border: #B2DFDB;
	--irodori-border-light: #D8EDEB;
	--irodori-border-strong: #00897B;
}

/* Theme 6: Green */
.tvoc2-theme-green {
	--irodori-primary: #27AE60;
	--irodori-primary-light: #58D68D;
	--irodori-primary-dark: #1E8449;
	--irodori-primary-pale: #D5F5E3;
	--irodori-bg-green-light: #E8F8F5;
	--irodori-bg-green-pale: #F0FDF4;
	--irodori-border: #C8E6C9;
	--irodori-border-light: #E0F0E0;
	--irodori-border-strong: #27AE60;
}

/* Theme 7: Rose */
.tvoc2-theme-rose {
	--irodori-primary: #C2185B;
	--irodori-primary-light: #E91E63;
	--irodori-primary-dark: #880E4F;
	--irodori-primary-pale: #FCE4EC;
	--irodori-bg-green-light: #FCE4EC;
	--irodori-bg-green-pale: #FEF2F6;
	--irodori-border: #F8BBD9;
	--irodori-border-light: #FBDBE9;
	--irodori-border-strong: #C2185B;
}

/* Theme 8: Indigo */
.tvoc2-theme-indigo {
	--irodori-primary: #3F51B5;
	--irodori-primary-light: #7986CB;
	--irodori-primary-dark: #303F9F;
	--irodori-primary-pale: #E8EAF6;
	--irodori-bg-green-light: #E8EAF6;
	--irodori-bg-green-pale: #F3F4FA;
	--irodori-border: #C5CAE9;
	--irodori-border-light: #E0E3F0;
	--irodori-border-strong: #3F51B5;
}

/* ============================================================================
   IRODORI NAV - PAGE HEADER
   ============================================================================ */

.tvoc2-irodori-nav-header {
	position: relative;
	margin-bottom: 2rem;
	border-radius: 16px;
	overflow: hidden;
	box-shadow:
		0 4px 20px rgba(0, 0, 0, 0.08),
		0 2px 8px rgba(0, 0, 0, 0.04);
	background: #FFFFFF;
}

/* Topic bar - gradient header with decorative circles */
.tvoc2-irodori-nav-header__topic {
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 1rem 1.5rem;
	background: linear-gradient(135deg,
		var(--irodori-primary) 0%,
		var(--irodori-primary-dark) 100%);
	color: white;
	position: relative;
	overflow: hidden;
}

/* Decorative circles in topic bar */
.tvoc2-irodori-nav-header__topic::before {
	content: "";
	position: absolute;
	right: -30px;
	top: -30px;
	width: 100px;
	height: 100px;
	background: rgba(255, 255, 255, 0.1);
	border-radius: 50%;
}

.tvoc2-irodori-nav-header__topic::after {
	content: "";
	position: absolute;
	right: 40px;
	top: -20px;
	width: 60px;
	height: 60px;
	background: rgba(255, 255, 255, 0.08);
	border-radius: 50%;
}

.tvoc2-irodori-nav-header__topic-text {
	font-size: 0.9375rem;
	font-weight: 700;
	letter-spacing: 0.05em;
	text-transform: uppercase;
	position: relative;
	z-index: 1;
	font-family: "Noto Sans JP", sans-serif;
	text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

/* Content area */
.tvoc2-irodori-nav-header__content {
	padding: 2rem 2rem 2.5rem;
	text-align: center;
	background: linear-gradient(
		135deg,
		var(--irodori-primary-pale) 0%,
		var(--irodori-bg-warm, #FEF9E7) 50%,
		var(--irodori-primary-pale) 100%
	);
	position: relative;
	overflow: hidden;
}

/* Decorative pattern like lesson page */
.tvoc2-irodori-nav-header__content::before {
	content: "";
	position: absolute;
	right: 0;
	bottom: 0;
	width: 250px;
	height: 100%;
	background:
		radial-gradient(circle at 80% 20%, var(--irodori-primary) 0%, transparent 10%),
		radial-gradient(circle at 50% 60%, var(--irodori-primary-light, rgba(255,255,255,0.5)) 0%, transparent 8%),
		radial-gradient(circle at 90% 75%, var(--irodori-primary) 0%, transparent 6%),
		radial-gradient(circle at 30% 85%, var(--irodori-primary-light, rgba(255,255,255,0.3)) 0%, transparent 5%);
	opacity: 0.15;
	pointer-events: none;
}

/* Left side decorative pattern */
.tvoc2-irodori-nav-header__content::after {
	content: "";
	position: absolute;
	left: 0;
	top: 0;
	width: 200px;
	height: 100%;
	background:
		radial-gradient(circle at 20% 30%, var(--irodori-primary) 0%, transparent 8%),
		radial-gradient(circle at 40% 70%, var(--irodori-primary-light, rgba(255,255,255,0.4)) 0%, transparent 6%);
	opacity: 0.1;
	pointer-events: none;
}

.tvoc2-irodori-nav-header__title {
	font-size: 2rem;
	font-weight: 800;
	color: var(--irodori-primary-dark);
	margin: 0 0 0.75rem 0;
	line-height: 1.3;
	font-family: "Noto Sans JP", sans-serif;
	text-shadow: 1px 1px 0 rgba(0, 0, 0, 0.08);
	position: relative;
	z-index: 1;
}

.tvoc2-irodori-nav-header__description {
	font-size: 1rem;
	color: var(--irodori-text-secondary, #4A4A4A);
	margin: 0 0 1rem 0;
	max-width: 600px;
	margin-left: auto;
	margin-right: auto;
	line-height: 1.6;
	position: relative;
	z-index: 1;
}

.tvoc2-irodori-nav-header__publisher {
	font-size: 0.9375rem;
	color: var(--irodori-primary);
	font-weight: 600;
	margin: 0 0 0.5rem 0;
	position: relative;
	z-index: 1;
}

.tvoc2-irodori-nav-header__stats {
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	margin: 0.5rem 0 0 0;
	padding: 0.5rem 1.25rem;
	background: var(--irodori-primary);
	color: white;
	border-radius: 25px;
	font-weight: 700;
	font-size: 0.875rem;
	box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
	position: relative;
	z-index: 1;
}

/* Decorative circles */
.tvoc2-irodori-nav-header__decoration {
	position: absolute;
	top: 0;
	right: 0;
	width: 200px;
	height: 200px;
	pointer-events: none;
}

.tvoc2-irodori-nav-header__circle {
	position: absolute;
	border-radius: 50%;
	background: rgba(255, 255, 255, 0.1);
}

.tvoc2-irodori-nav-header__circle--1 {
	width: 120px;
	height: 120px;
	right: -30px;
	top: -30px;
}

.tvoc2-irodori-nav-header__circle--2 {
	width: 80px;
	height: 80px;
	right: 60px;
	top: -10px;
	background: rgba(255, 255, 255, 0.08);
}

.tvoc2-irodori-nav-header__circle--3 {
	width: 50px;
	height: 50px;
	right: 20px;
	top: 50px;
	background: rgba(255, 255, 255, 0.06);
}

/* Textbook header variant with cover */
.tvoc2-irodori-nav-header--textbook {
	display: grid;
	grid-template-columns: 1fr;
}

.tvoc2-irodori-nav-header--textbook .tvoc2-irodori-nav-header__cover {
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 1rem;
	background: var(--irodori-primary-pale);
}

.tvoc2-irodori-nav-header--textbook .tvoc2-irodori-nav-header__cover img {
	/* A4 portrait ratio for mobile */
	width: 120px;
	aspect-ratio: 210 / 297;
	object-fit: contain;
	object-position: center center;
	border-radius: 8px;
	box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
	background: #fff;
	padding: 6px;
}

@media (min-width: 768px) {
	.tvoc2-irodori-nav-header--textbook {
		display: grid;
		grid-template-columns: 200px 1fr;
		grid-template-rows: auto 1fr;
		grid-template-areas:
			"topic topic"
			"cover content";
	}

	.tvoc2-irodori-nav-header--textbook .tvoc2-irodori-nav-header__topic {
		grid-area: topic;
	}

	.tvoc2-irodori-nav-header--textbook .tvoc2-irodori-nav-header__cover {
		grid-area: cover;
		display: flex;
		align-items: center;
		justify-content: center;
		padding: 1rem;
		background: var(--irodori-primary-pale);
	}

	.tvoc2-irodori-nav-header--textbook .tvoc2-irodori-nav-header__cover img {
		/* A4 portrait ratio with consistent padding */
		width: calc(100% - 24px);
		aspect-ratio: 210 / 297;
		object-fit: contain;
		object-position: center center;
		border-radius: 8px;
		box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
		background: #fff;
		padding: 8px;
	}

	.tvoc2-irodori-nav-header--textbook .tvoc2-irodori-nav-header__content {
		grid-area: content;
		display: flex;
		flex-direction: column;
		justify-content: center;
		align-items: flex-start;
		text-align: left;
		padding: 1.5rem 2rem;
		gap: 0.375rem;
		position: relative;
	}

	/* Decorative pattern like lesson page */
	.tvoc2-irodori-nav-header--textbook .tvoc2-irodori-nav-header__content::before {
		content: "";
		position: absolute;
		right: 0;
		bottom: 0;
		width: 150px;
		height: 100%;
		background:
			radial-gradient(circle at 80% 30%, var(--irodori-primary) 0%, transparent 8%),
			radial-gradient(circle at 50% 70%, var(--irodori-primary-light, rgba(255,255,255,0.3)) 0%, transparent 6%),
			radial-gradient(circle at 90% 80%, var(--irodori-primary) 0%, transparent 5%);
		opacity: 0.15;
		pointer-events: none;
	}

	.tvoc2-irodori-nav-header--textbook .tvoc2-irodori-nav-header__title {
		font-size: 2.25rem;
		font-weight: 800;
		font-family: "Noto Sans JP", sans-serif;
		margin: 0 0 0.5rem 0;
		text-shadow: 1px 1px 0 rgba(0, 0, 0, 0.1);
		position: relative;
		z-index: 1;
		/* Double underline effect */
		display: inline-block;
		padding-bottom: 0.5rem;
		border-bottom: 3px double var(--irodori-primary);
	}

	.tvoc2-irodori-nav-header--textbook .tvoc2-irodori-nav-header__publisher {
		font-size: 0.9375rem;
		font-weight: 600;
		color: var(--irodori-primary-dark);
		position: relative;
		z-index: 1;
	}

	.tvoc2-irodori-nav-header--textbook .tvoc2-irodori-nav-header__description {
		font-size: 0.875rem;
		line-height: 1.5;
		opacity: 0.8;
		max-width: 350px;
		/* Override auto margins from base style */
		margin-left: 0;
		margin-right: 0;
		margin-bottom: 0;
		position: relative;
		z-index: 1;
	}

	.tvoc2-irodori-nav-header--textbook .tvoc2-irodori-nav-header__stats {
		display: inline-flex;
		align-items: center;
		gap: 0.5rem;
		margin-top: 0.75rem;
		padding: 0.5rem 1.25rem;
		background: var(--irodori-primary);
		color: white;
		border-radius: 25px;
		font-weight: 700;
		font-size: 0.875rem;
		box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
		position: relative;
		z-index: 1;
	}

	.tvoc2-irodori-nav-header--textbook .tvoc2-irodori-nav-header__stats::before {
		content: "📖";
	}

	.tvoc2-irodori-nav-header--textbook .tvoc2-irodori-nav-header__decoration {
		/* Decoration spans the content area */
		grid-area: content;
		pointer-events: none;
	}
}

/* ============================================================================
   IRODORI NAV - CATEGORY CARDS (Home page)
   ============================================================================ */

.tvoc2-irodori-categories {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
	gap: 1.5rem;
}

.tvoc2-irodori-category-card {
	display: flex;
	align-items: center;
	gap: 1.25rem;
	padding: 1.5rem;
	background: #FFFFFF;
	border-radius: 16px;
	text-decoration: none;
	color: inherit;
	transition: all 0.25s ease;
	box-shadow:
		0 2px 8px rgba(0, 0, 0, 0.06),
		0 1px 3px rgba(0, 0, 0, 0.04);
	border: 2px solid transparent;
}

.tvoc2-irodori-category-card:hover {
	transform: translateY(-4px);
	box-shadow:
		0 8px 24px rgba(0, 0, 0, 0.1),
		0 4px 12px rgba(0, 0, 0, 0.06);
	border-color: var(--irodori-primary);
}

.tvoc2-irodori-category-card__icon {
	flex-shrink: 0;
	width: 64px;
	height: 64px;
	display: flex;
	align-items: center;
	justify-content: center;
	background: var(--irodori-primary-pale);
	border-radius: 16px;
	color: var(--irodori-primary);
	transition: transform 0.25s ease, background 0.25s ease;
}

.tvoc2-irodori-category-card:hover .tvoc2-irodori-category-card__icon {
	transform: scale(1.05);
	background: var(--irodori-primary);
	color: white;
}

.tvoc2-irodori-category-card__icon .dashicons {
	font-size: 32px;
	width: 32px;
	height: 32px;
}

.tvoc2-irodori-category-card__content {
	flex: 1;
	min-width: 0;
}

.tvoc2-irodori-category-card__title {
	font-size: 1.25rem;
	font-weight: 800;
	color: var(--irodori-primary-dark);
	margin: 0 0 0.375rem 0;
	line-height: 1.3;
	font-family: "Noto Sans JP", sans-serif;
	text-shadow: 1px 1px 0 rgba(0, 0, 0, 0.05);
}

.tvoc2-irodori-category-card__description {
	font-size: 0.875rem;
	color: var(--irodori-text-secondary, #4A4A4A);
	margin: 0;
	line-height: 1.5;
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
}

.tvoc2-irodori-category-card__arrow {
	flex-shrink: 0;
	color: var(--irodori-primary);
	opacity: 0.5;
	transition: all 0.25s ease;
}

.tvoc2-irodori-category-card:hover .tvoc2-irodori-category-card__arrow {
	opacity: 1;
	transform: translateX(4px);
}

/* ============================================================================
   IRODORI NAV - LEVEL CARDS (Category page)
   ============================================================================ */

.tvoc2-irodori-levels {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(260px, 320px));
	gap: 1.5rem;
	justify-content: start;
}

/* Badge cards (no image) span full width for list-style layout */
.tvoc2-irodori-level-card:not(.has-image) {
	grid-column: 1 / -1;
	max-width: 600px;
}

@media (min-width: 768px) {
	.tvoc2-irodori-levels {
		grid-template-columns: repeat(auto-fill, minmax(280px, 320px));
	}
}

@media (max-width: 600px) {
	.tvoc2-irodori-levels {
		grid-template-columns: 1fr;
	}

	.tvoc2-irodori-level-card.has-image {
		max-width: none;
	}
}

.tvoc2-irodori-level-card {
	display: flex;
	align-items: center;
	gap: 1.25rem;
	padding: 1.25rem 1.5rem;
	background: #FFFFFF;
	border-radius: 12px;
	text-decoration: none;
	color: inherit;
	transition: all 0.25s ease;
	box-shadow:
		0 2px 8px rgba(0, 0, 0, 0.06),
		0 1px 3px rgba(0, 0, 0, 0.04);
	border-left: 4px solid var(--irodori-primary);
}

.tvoc2-irodori-level-card:hover {
	transform: translateX(4px);
	box-shadow:
		0 6px 20px rgba(0, 0, 0, 0.12),
		0 3px 10px rgba(0, 0, 0, 0.08);
	background: var(--irodori-primary-pale);
	border-left-color: var(--irodori-primary-dark);
}

.tvoc2-irodori-level-card:hover .tvoc2-irodori-level-card__badge {
	transform: scale(1.05);
	box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.tvoc2-irodori-level-card__badge {
	flex-shrink: 0;
	min-width: 48px;
	max-width: 100px;
	height: 40px;
	padding: 0 0.75rem;
	display: flex;
	align-items: center;
	justify-content: center;
	background: linear-gradient(135deg, var(--irodori-primary) 0%, var(--irodori-primary-dark) 100%);
	color: white;
	font-size: 0.875rem;
	font-weight: 700;
	border-radius: 8px;
	letter-spacing: 0.02em;
	text-transform: uppercase;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
	box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
	transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.tvoc2-irodori-level-card__content {
	flex: 1;
	min-width: 0;
}

.tvoc2-irodori-level-card__title {
	font-size: 1.125rem;
	font-weight: 700;
	color: var(--irodori-text, #1A1A1A);
	margin: 0 0 0.25rem 0;
	line-height: 1.3;
	font-family: "Noto Sans JP", sans-serif;
}

.tvoc2-irodori-level-card__description {
	font-size: 0.875rem;
	color: var(--irodori-text-secondary, #4A4A4A);
	margin: 0;
	line-height: 1.4;
}

.tvoc2-irodori-level-card__arrow {
	flex-shrink: 0;
	color: var(--irodori-primary);
	opacity: 0.5;
	transition: all 0.25s ease;
}

.tvoc2-irodori-level-card:hover .tvoc2-irodori-level-card__arrow {
	opacity: 1;
	transform: translateX(4px);
}

/* ============================================================================
   IRODORI NAV - IMAGE-BASED LEVEL CARDS
   Design inspired by tokutei-grammar plugin
   ============================================================================ */

.tvoc2-irodori-level-card.has-image {
	flex-direction: column;
	padding: 0;
	gap: 0; /* Override base gap */
	border-left: none;
	border-radius: 16px;
	overflow: hidden;
	border: 2px solid transparent;
	border-top: 4px solid var(--irodori-primary);
	position: relative;
	box-shadow:
		0 2px 12px rgba(0, 0, 0, 0.08),
		0 1px 4px rgba(0, 0, 0, 0.04);
}

.tvoc2-irodori-level-card.has-image:hover {
	transform: translateY(-6px);
	border-color: var(--irodori-primary);
	border-top-color: var(--irodori-primary-dark);
	background: #fff;
	box-shadow:
		0 12px 32px rgba(0, 0, 0, 0.12),
		0 4px 12px rgba(0, 0, 0, 0.06);
}

/* Image area - 4:3 aspect ratio */
.tvoc2-irodori-level-card__image {
	width: 100%;
	aspect-ratio: 4 / 3;
	background: var(--irodori-primary-pale);
	display: flex;
	align-items: center;
	justify-content: center;
	overflow: hidden;
}

.tvoc2-irodori-level-card__image img {
	width: calc(100% - 24px);
	height: calc(100% - 16px);
	margin: 12px 12px 4px 12px;
	object-fit: contain;
	object-position: center center;
	transition: transform 0.3s ease;
}

.tvoc2-irodori-level-card.has-image:hover .tvoc2-irodori-level-card__image img {
	transform: scale(1.08);
}

/* Info area (title + arrow) */
.tvoc2-irodori-level-card__info {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 0.75rem 1.25rem 1rem 1.25rem;
	gap: 0.75rem;
	background: #fff;
}

.tvoc2-irodori-level-card.has-image .tvoc2-irodori-level-card__title {
	font-size: 1.125rem;
	font-weight: 900;
	margin: 0;
	background: linear-gradient(135deg, var(--irodori-primary) 0%, #333 100%);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	background-clip: text;
	flex: 1;
}

.tvoc2-irodori-level-card__info .tvoc2-irodori-level-card__arrow {
	flex-shrink: 0;
	width: 32px;
	height: 32px;
	display: flex;
	align-items: center;
	justify-content: center;
	background: var(--irodori-primary);
	color: white;
	border-radius: 50%;
	opacity: 0.8;
	transition: all 0.25s ease;
}

.tvoc2-irodori-level-card.has-image:hover .tvoc2-irodori-level-card__info .tvoc2-irodori-level-card__arrow {
	opacity: 1;
	transform: translateX(4px);
	background: var(--irodori-primary-dark);
}

/* ============================================================================
   IRODORI NAV - IMAGE CARDS RESPONSIVE (Mobile: horizontal layout)
   ============================================================================ */

@media (max-width: 480px) {
	.tvoc2-irodori-level-card.has-image {
		flex-direction: row;
		align-items: center;
		padding: 0;
		border-top: none;
		border-left: 4px solid var(--irodori-primary);
	}

	.tvoc2-irodori-level-card__image {
		width: 90px;
		height: 90px;
		flex-shrink: 0;
		aspect-ratio: auto;
	}

	.tvoc2-irodori-level-card__image img {
		width: calc(100% - 16px);
		height: calc(100% - 16px);
		margin: 8px;
	}

	.tvoc2-irodori-level-card__info {
		flex: 1;
		padding: 0.875rem 1rem;
	}

	.tvoc2-irodori-level-card.has-image .tvoc2-irodori-level-card__title {
		font-size: 1rem;
	}

	.tvoc2-irodori-level-card__info .tvoc2-irodori-level-card__arrow {
		width: 28px;
		height: 28px;
	}

	.tvoc2-irodori-level-card.has-image:hover {
		transform: translateX(4px);
		border-left-color: var(--irodori-primary-dark);
	}
}

/* ============================================================================
   IRODORI NAV - TEXTBOOK CARDS (Level page)
   ============================================================================ */

.tvoc2-irodori-textbooks {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(200px, 240px));
	gap: 1.5rem;
	justify-content: start;
}

.tvoc2-irodori-textbook-card {
	display: flex;
	flex-direction: column;
	background: #FFFFFF;
	border-radius: 0;
	text-decoration: none;
	color: inherit;
	overflow: hidden;
	transition: all 0.25s ease;
	box-shadow:
		0 2px 12px rgba(0, 0, 0, 0.08),
		0 1px 4px rgba(0, 0, 0, 0.04);
	border: 2px solid var(--irodori-primary);
	padding: 12px 12px 0 12px;
}

.tvoc2-irodori-textbook-card:hover {
	transform: translateY(-6px);
	box-shadow:
		0 12px 32px rgba(0, 0, 0, 0.12),
		0 4px 12px rgba(0, 0, 0, 0.06);
	border-color: var(--irodori-primary-dark);
}

.tvoc2-irodori-textbook-card__image {
	position: relative;
	/* A4 portrait ratio: width:height = 210:297 */
	aspect-ratio: 210 / 297;
	width: 100%;
	background: var(--irodori-primary-pale);
	display: flex;
	align-items: center;
	justify-content: center;
	overflow: hidden;
}

.tvoc2-irodori-textbook-card__image img {
	width: 100%;
	height: 100%;
	object-fit: contain;
	object-position: center center;
}

.tvoc2-irodori-textbook-card__placeholder {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 100%;
	height: 100%;
	background: linear-gradient(135deg,
		var(--irodori-primary-pale) 0%,
		var(--irodori-border-light, #E8E4E0) 100%);
	color: var(--irodori-primary);
	transition: background 0.25s ease;
}

.tvoc2-irodori-textbook-card:hover .tvoc2-irodori-textbook-card__placeholder {
	background: linear-gradient(135deg,
		var(--irodori-primary-pale) 0%,
		var(--irodori-primary-light, #E8E4E0) 100%);
}

.tvoc2-irodori-textbook-card__placeholder svg {
	opacity: 0.5;
	transition: transform 0.25s ease, opacity 0.25s ease;
}

.tvoc2-irodori-textbook-card:hover .tvoc2-irodori-textbook-card__placeholder svg {
	opacity: 0.8;
	transform: scale(1.1);
}

.tvoc2-irodori-textbook-card__content {
	flex: 1;
	padding: 0.875rem 0 1rem 0;
	display: flex;
	flex-direction: column;
	align-items: center;
	text-align: center;
}

.tvoc2-irodori-textbook-card__title {
	font-size: 1.125rem;
	font-weight: 800;
	color: var(--irodori-primary-dark);
	margin: 0 0 0.5rem 0;
	line-height: 1.3;
	font-family: "Noto Sans JP", sans-serif;
	text-shadow: 1px 1px 0 rgba(0, 0, 0, 0.05);
}

.tvoc2-irodori-textbook-card__publisher {
	font-size: 0.8125rem;
	color: var(--irodori-primary);
	font-weight: 500;
	margin: 0 0 0.5rem 0;
}

.tvoc2-irodori-textbook-card__description {
	font-size: 0.875rem;
	color: var(--irodori-text-secondary, #4A4A4A);
	margin: 0;
	line-height: 1.5;
	flex: 1;
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
}

.tvoc2-irodori-textbook-card__arrow {
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 0.75rem 1.5rem;
	background: var(--irodori-primary-pale);
	color: var(--irodori-primary);
	border-top: 1px solid var(--irodori-border-light, #E8E4E0);
	transition: all 0.25s ease;
}

.tvoc2-irodori-textbook-card:hover .tvoc2-irodori-textbook-card__arrow {
	background: var(--irodori-primary);
	color: white;
}

/* ============================================================================
   IRODORI NAV - LESSON LIST (Textbook page)
   ============================================================================ */

.tvoc2-irodori-lessons {
	display: flex;
	flex-direction: column;
	gap: 0.75rem;
}

.tvoc2-irodori-lesson-item {
	display: flex;
	align-items: center;
	gap: 1rem;
	padding: 1rem 1.25rem;
	background: #FFFFFF;
	border-radius: 12px;
	text-decoration: none;
	color: inherit;
	transition: all 0.2s ease;
	box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
	border: 1px solid var(--irodori-border-light, #E8E4E0);
}

.tvoc2-irodori-lesson-item:hover {
	background: var(--irodori-primary-pale);
	border-color: var(--irodori-primary);
	transform: translateX(4px);
}

.tvoc2-irodori-lesson-item__number {
	flex-shrink: 0;
	width: 48px;
	height: 48px;
	display: flex;
	align-items: center;
	justify-content: center;
	background: transparent;
	color: var(--irodori-primary);
	font-size: 1.25rem;
	font-weight: 800;
	border-radius: 8px;
	border: 2.5px solid var(--irodori-primary);
	transition: all 0.25s ease;
}

.tvoc2-irodori-lesson-item:hover .tvoc2-irodori-lesson-item__number {
	background: var(--irodori-primary);
	color: white;
	transform: scale(1.05);
}

.tvoc2-irodori-lesson-item__content {
	flex: 1;
	min-width: 0;
}

.tvoc2-irodori-lesson-item__title {
	font-size: 1rem;
	font-weight: 700;
	color: var(--irodori-text, #1A1A1A);
	margin: 0 0 0.25rem 0;
	line-height: 1.3;
	font-family: "Noto Sans JP", sans-serif;
}

.tvoc2-irodori-lesson-item__description {
	font-size: 0.8125rem;
	color: var(--irodori-text-secondary, #4A4A4A);
	margin: 0;
	line-height: 1.4;
	display: -webkit-box;
	-webkit-line-clamp: 1;
	-webkit-box-orient: vertical;
	overflow: hidden;
}

.tvoc2-irodori-lesson-item__meta {
	flex-shrink: 0;
	display: flex;
	align-items: center;
	gap: 0.75rem;
}

.tvoc2-irodori-lesson-item__count {
	font-size: 0.8125rem;
	color: var(--irodori-text-muted, #777777);
	background: var(--irodori-primary-pale);
	padding: 0.25rem 0.75rem;
	border-radius: 20px;
	font-weight: 500;
}

.tvoc2-irodori-lesson-item__arrow {
	color: var(--irodori-primary);
	opacity: 0.5;
	transition: all 0.2s ease;
}

.tvoc2-irodori-lesson-item:hover .tvoc2-irodori-lesson-item__arrow {
	opacity: 1;
	transform: translateX(3px);
}

/* ============================================================================
   RESPONSIVE STYLES
   ============================================================================ */

@media (max-width: 768px) {
	/* Reduce border-radius on mobile */
	.tvoc2-irodori-nav-header {
		border-radius: 6px;
	}

	.tvoc2-irodori-nav-header__content {
		padding: 1.5rem 1.25rem 2rem;
	}

	/* Hide decorative patterns on smaller screens for cleaner look */
	.tvoc2-irodori-nav-header__content::before,
	.tvoc2-irodori-nav-header__content::after {
		width: 100px;
		opacity: 0.1;
	}

	.tvoc2-irodori-nav-header__title {
		font-size: 1.5rem;
	}

	.tvoc2-irodori-nav-header__stats {
		padding: 0.375rem 1rem;
		font-size: 0.8125rem;
	}

	.tvoc2-irodori-categories {
		grid-template-columns: 1fr;
	}

	.tvoc2-irodori-category-card {
		padding: 1.25rem;
		border-radius: 6px;
	}

	.tvoc2-irodori-category-card__icon {
		width: 56px;
		height: 56px;
		border-radius: 6px;
	}

	.tvoc2-irodori-level-card {
		border-radius: 6px;
	}

	.tvoc2-irodori-level-card.has-image {
		border-radius: 6px;
	}

	.tvoc2-irodori-lesson-item {
		border-radius: 6px;
	}

	.tvoc2-irodori-category-card__icon .dashicons {
		font-size: 28px;
		width: 28px;
		height: 28px;
	}

	.tvoc2-irodori-textbooks {
		grid-template-columns: 1fr;
		gap: 1rem;
	}

	/* Textbook card horizontal layout on mobile */
	.tvoc2-irodori-textbook-card {
		flex-direction: row;
		align-items: stretch;
		padding: 0;
		border-left: 4px solid var(--irodori-primary);
		border-top: none;
	}

	.tvoc2-irodori-textbook-card__image {
		width: 100px;
		flex-shrink: 0;
		aspect-ratio: auto;
		height: auto;
		min-height: 120px;
	}

	.tvoc2-irodori-textbook-card__image img {
		padding: 8px;
	}

	.tvoc2-irodori-textbook-card__content {
		flex: 1;
		padding: 0.75rem 1rem;
		align-items: flex-start;
		text-align: left;
		justify-content: center;
	}

	.tvoc2-irodori-textbook-card__title {
		font-size: 1rem;
		margin-bottom: 0.25rem;
	}

	.tvoc2-irodori-textbook-card__publisher {
		font-size: 0.75rem;
		margin-bottom: 0.25rem;
	}

	.tvoc2-irodori-textbook-card__description {
		font-size: 0.8125rem;
		-webkit-line-clamp: 2;
	}

	.tvoc2-irodori-textbook-card__arrow {
		display: none;
	}

	.tvoc2-irodori-textbook-card:hover {
		transform: translateX(4px);
		border-left-color: var(--irodori-primary-dark);
	}

	.tvoc2-irodori-lesson-item {
		padding: 0.875rem 1rem;
	}

	.tvoc2-irodori-lesson-item__number {
		width: 40px;
		height: 40px;
		font-size: 1rem;
		border-radius: 6px;
	}

	.tvoc2-irodori-lesson-item__count {
		display: none;
	}
}

@media (max-width: 480px) {
	.tvoc2-irodori-nav-header__topic {
		padding: 0.75rem 1rem;
	}

	/* Hide topic bar decorative circles on mobile */
	.tvoc2-irodori-nav-header__topic::before,
	.tvoc2-irodori-nav-header__topic::after {
		display: none;
	}

	.tvoc2-irodori-nav-header__topic-text {
		font-size: 0.8125rem;
	}

	.tvoc2-irodori-nav-header__content {
		padding: 1.25rem 1rem 1.5rem;
	}

	/* Hide content decorative patterns on very small screens */
	.tvoc2-irodori-nav-header__content::before,
	.tvoc2-irodori-nav-header__content::after {
		display: none;
	}

	.tvoc2-irodori-nav-header__title {
		font-size: 1.25rem;
	}

	.tvoc2-irodori-nav-header__stats {
		padding: 0.375rem 0.875rem;
		font-size: 0.75rem;
	}

	.tvoc2-irodori-level-card {
		padding: 0.875rem 1rem;
		gap: 0.875rem;
	}

	.tvoc2-irodori-level-card__badge {
		min-width: 44px;
		max-width: 80px;
		height: 34px;
		font-size: 0.75rem;
		padding: 0 0.5rem;
	}

	.tvoc2-irodori-level-card__title {
		font-size: 0.9375rem;
	}

	.tvoc2-irodori-level-card__description {
		font-size: 0.8125rem;
		display: -webkit-box;
		-webkit-line-clamp: 2;
		-webkit-box-orient: vertical;
		overflow: hidden;
	}

	/* Textbook card - smaller on very small screens */
	.tvoc2-irodori-textbook-card__image {
		width: 80px;
		min-height: 100px;
	}

	.tvoc2-irodori-textbook-card__content {
		padding: 0.625rem 0.875rem;
	}

	.tvoc2-irodori-textbook-card__title {
		font-size: 0.9375rem;
	}

	/* Lesson item - more compact */
	.tvoc2-irodori-lesson-item {
		padding: 0.75rem 0.875rem;
		gap: 0.75rem;
	}

	.tvoc2-irodori-lesson-item__number {
		width: 36px;
		height: 36px;
		font-size: 0.875rem;
		border-width: 2px;
		border-radius: 6px;
	}

	.tvoc2-irodori-lesson-item__title {
		font-size: 0.9375rem;
	}

	.tvoc2-irodori-lesson-item__description {
		display: none;
	}

	.tvoc2-irodori-lesson-item__arrow svg {
		width: 18px;
		height: 18px;
	}
}