*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
	--c-bg: #f1f5f9;
	--c-surface: #ffffff;
	--c-surface-muted: #f8fafc;
	--c-border: #dbe3ee;
	--c-border-strong: #c7d2e1;
	--c-text: #172033;
	--c-text-muted: #64748b;
	--c-text-soft: #94a3b8;
	--c-primary: #2563eb;
	--c-primary-soft: #eff6ff;
	--c-primary-border: #bfdbfe;
	--font: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans JP', sans-serif;
	--radius-sm: 7px;
	--radius-md: 12px;
	--shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
	--shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
	--transition: 0.16s ease;
}

@media (prefers-color-scheme: dark) {
	:root {
		--c-bg: #0f172a;
		--c-surface: #1e293b;
		--c-surface-muted: #172033;
		--c-border: #334155;
		--c-border-strong: #475569;
		--c-text: #f1f5f9;
		--c-text-muted: #94a3b8;
		--c-text-soft: #64748b;
		--c-primary-soft: #172554;
		--c-primary-border: #1d4ed8;
	}
}

html, body { min-height: 100%; }

body {
	font-family: var(--font);
	background: var(--c-bg);
	color: var(--c-text);
	line-height: 1.45;
	overflow: hidden;
}

button, input { font: inherit; }

.launcher-shell {
	height: 100vh;
	max-width: 1560px;
	margin: 0 auto;
	display: grid;
	grid-template-rows: auto minmax(0, 1fr);
	background: var(--c-bg);
}

/* ヘッダー */
.launcher-header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 2rem;
	padding: 1rem 1.5rem;
	border-bottom: 1px solid var(--c-border);
	background: var(--c-surface);
}

.launcher-title {
	display: flex;
	align-items: baseline;
	gap: 0.9rem;
	min-width: 180px;
}

.home-link {
	color: var(--c-text);
	font-size: 1.15rem;
	font-weight: 750;
	letter-spacing: 0.02em;
	text-decoration: none;
}

.home-link:hover { color: var(--c-primary); }

.home-link:focus-visible {
	border-radius: var(--radius-sm);
	outline: 2px solid var(--c-primary);
	outline-offset: 3px;
}

.content-title {
	margin-top: 0.1rem;
	font-size: 1.15rem;
	font-weight: 750;
	letter-spacing: 0.02em;
}

.search-panel {
	display: grid;
	grid-template-columns: auto minmax(280px, 560px) auto auto;
	align-items: center;
	gap: 0.65rem;
	min-width: min(720px, 100%);
}

.search-label {
	color: var(--c-text-muted);
	font-size: 0.8rem;
	font-weight: 700;
}

.search-input {
	width: 100%;
	min-height: 40px;
	padding: 0.5rem 0.75rem;
	border: 1px solid var(--c-border-strong);
	border-radius: var(--radius-sm);
	background: var(--c-surface-muted);
	color: var(--c-text);
	font-size: 0.9rem;
}

.search-input::placeholder { color: var(--c-text-soft); }

.search-input:focus {
	border-color: var(--c-primary);
	background: var(--c-surface);
	outline: 2px solid rgba(37, 99, 235, 0.2);
	outline-offset: 1px;
}

.search-count {
	color: var(--c-text-muted);
	font-size: 0.75rem;
	white-space: nowrap;
}

.display-mode-toggle {
	min-height: 40px;
	padding: 0.45rem 0.7rem;
	border: 1px solid var(--c-border);
	border-radius: var(--radius-sm);
	background: var(--c-surface);
	color: var(--c-text-muted);
	font-size: 0.75rem;
	cursor: pointer;
	transition: var(--transition);
}

.display-mode-toggle:hover { border-color: var(--c-primary); color: var(--c-primary); }

.display-mode-toggle:focus-visible,
.category-button:focus-visible,
.card:focus-visible {
	outline: 2px solid var(--c-primary);
	outline-offset: 2px;
}

/* 左ナビ＋右コンテンツ */
.launcher-layout {
	display: grid;
	grid-template-columns: 220px minmax(0, 1fr);
	min-height: 0;
}

.category-sidebar {
	min-height: 0;
	overflow-y: auto;
	padding: 1.25rem 0.85rem 1.5rem;
	border-right: 1px solid var(--c-border);
	background: var(--c-surface-muted);
}

.category-nav { display: grid; gap: 0.2rem; }

.category-button {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 0.5rem;
	width: 100%;
	min-height: 34px;
	padding: 0.35rem 0.55rem;
	border: 1px solid transparent;
	border-radius: var(--radius-sm);
	background: transparent;
	color: var(--c-text-muted);
	text-align: left;
	cursor: pointer;
	transition: var(--transition);
}

.category-button:hover {
	background: var(--c-surface);
	color: var(--c-text);
}

.category-button[aria-pressed="true"] {
	border-color: var(--c-primary-border);
	background: var(--c-primary-soft);
	color: var(--c-primary);
	font-weight: 700;
}

.content-panel {
	display: grid;
	grid-template-rows: auto minmax(0, 1fr);
	min-width: 0;
	min-height: 0;
	background: var(--c-bg);
}

.content-header {
	display: flex;
	align-items: end;
	justify-content: space-between;
	gap: 1rem;
	padding: 1.25rem 1.5rem 1rem;
}

.card-area {
	min-height: 0;
	overflow: auto;
	padding: 0.5rem 1.5rem 1.5rem;
}

.card-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
	align-content: start;
	gap: 0.7rem;
}

.card-grid.is-grouped { display: block; }

.category-subgroup + .category-subgroup { margin-top: 1.5rem; }

.category-subgroup-title {
	margin-bottom: 0.55rem;
	color: var(--c-text-muted);
	font-size: 0.82rem;
	font-weight: 750;
}

/* カード */
.card {
	display: flex;
	align-items: center;
	gap: 0.7rem;
	min-height: 72px;
	padding: 0.7rem 0.8rem;
	border: 1px solid var(--c-border);
	border-radius: var(--radius-md);
	background: var(--c-surface);
	box-shadow: var(--shadow-sm);
	color: var(--c-text);
	text-decoration: none;
	transition: var(--transition);
}

.card:hover {
	border-color: var(--c-primary);
	box-shadow: var(--shadow-md);
	transform: translateY(-1px);
}

body.is-keyboard-navigation .card:hover {
	border-color: var(--c-border);
	box-shadow: var(--shadow-sm);
	transform: none;
}

body.is-keyboard-navigation .card,
body.is-keyboard-navigation .category-button {
	transition: none;
}

body.is-keyboard-navigation .card:focus {
	border-color: var(--c-primary);
	box-shadow: var(--shadow-md);
	transform: translateY(-1px);
}

body.is-keyboard-navigation .category-button:hover {
	background: transparent;
	color: var(--c-text-muted);
}

body.is-keyboard-navigation .category-button[aria-pressed="true"]:hover {
	background: var(--c-primary-soft);
	color: var(--c-primary);
}

.card-icon {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 34px;
	height: 34px;
	flex: 0 0 34px;
	border-radius: 9px;
	background: var(--c-primary-soft);
	font-size: 17px;
}

.card-body {
	display: grid;
	gap: 0.15rem;
	min-width: 0;
}

.card-label {
	overflow: hidden;
	font-size: 0.86rem;
	font-weight: 650;
	line-height: 1.3;
	display: -webkit-box;
	-webkit-box-orient: vertical;
	-webkit-line-clamp: 2;
}

.card-category {
	overflow: hidden;
	color: var(--c-text-soft);
	font-size: 0.68rem;
	text-overflow: ellipsis;
	white-space: nowrap;
}

/* 状態 */
.hidden { display: none !important; }

.no-results {
	padding: 3rem 1rem;
	color: var(--c-text-muted);
	text-align: center;
}

.no-results-icon {
	margin-bottom: 0.6rem;
	font-size: 2.2rem;
	opacity: 0.55;
}

.no-results small {
	display: block;
	margin-top: 0.35rem;
	color: var(--c-text-soft);
}

@media (max-width: 1050px) {
	.launcher-header { align-items: stretch; flex-direction: column; gap: 0.8rem; }
	.search-panel { min-width: 0; }
	.launcher-layout { grid-template-columns: 190px minmax(0, 1fr); }
}

@media (max-width: 720px) {
	body { overflow: auto; }
	.launcher-shell { height: auto; min-height: 100vh; }
	.launcher-header { padding: 0.9rem 1rem; }
	.search-panel { grid-template-columns: auto minmax(0, 1fr) auto; }
	.display-mode-toggle { grid-column: 3; grid-row: 1; }
	.search-count { grid-column: 2; grid-row: 2; }
	.launcher-layout { display: block; }
	.category-sidebar { border-right: 0; border-bottom: 1px solid var(--c-border); overflow: visible; padding: 0.8rem 1rem; }
	.category-nav { display: flex; gap: 0.2rem; overflow-x: auto; padding-top: 0; }
	.category-button { width: auto; min-width: max-content; }
	.content-header { padding: 1rem; }
	.card-area { padding: 0.5rem 1rem 1rem; }
}