/* ============================================================
   LEARN — Lernpfad-Templates (learn / learn-chapter / learn-lesson)
   Reuses Tokens aus global.css (--pw-*) und blog.css (--blog-*).
   Lektion (.learn-lesson) erbt das Hero/Content-Layout von blog-post.css.
   ============================================================ */

.lp-container {
	max-width: 1120px;
	margin: 0 auto;
	padding: 0 var(--pw-space-lg);
}

/* ---------- HUB (/de/learn) ---------- */
.lp-hub__hero {
	background: linear-gradient(180deg, var(--pw-bg-alt) 0%, #fff 100%);
	border-bottom: 1px solid var(--pw-border);
	padding: 96px 0 56px;
}
.lp-hub__eyebrow {
	font-size: 12px;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.14em;
	color: var(--pw-brand);
	margin: 0 0 14px;
}
.lp-hub__title {
	font-size: 46px;
	font-weight: 700;
	line-height: 1.12;
	letter-spacing: -0.025em;
	color: var(--pw-text);
	margin: 0 0 18px;
	max-width: 900px;
}
.lp-hub__sub {
	font-size: 21px;
	font-weight: 400;
	line-height: 1.4;
	color: var(--pw-text-secondary);
	margin: 0 0 28px;
	max-width: 780px;
}
.lp-hub__intro {
	font-size: 17px;
	line-height: 1.6;
	color: #3a3a3c;
	max-width: 780px;
}
.lp-hub__chapters {
	padding: 64px 0 96px;
}

.lp-chapter-grid {
	list-style: none;
	margin: 0;
	padding: 0;
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
	gap: 20px;
	counter-reset: lp-chapter;
}

.lp-chapter-card {
	margin: 0;
	padding: 0;
	list-style: none;
}
.lp-chapter-card__link {
	display: grid;
	grid-template-columns: 56px 1fr auto;
	gap: 20px;
	align-items: start;
	padding: var(--pw-space-lg) 26px;
	background: var(--pw-bg);
	border: 1px solid var(--pw-border);
	border-radius: var(--pw-radius-md);
	color: inherit;
	text-decoration: none;
	transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.lp-chapter-card__link:hover {
	border-color: var(--pw-border-light);
	transform: translateY(-2px);
	box-shadow: var(--pw-shadow-md);
}
.lp-chapter-card__link:focus-visible {
	outline: 2px solid var(--pw-brand);
	outline-offset: 2px;
}
.lp-chapter-card__num {
	font-size: 28px;
	font-weight: 700;
	color: var(--pw-brand);
	font-variant-numeric: tabular-nums;
	line-height: 1;
}
.lp-chapter-card__title {
	font-size: 19px;
	font-weight: 700;
	color: var(--pw-text);
	margin: 0 0 var(--pw-space-sm);
	line-height: 1.3;
}
.lp-chapter-card__desc {
	font-size: 14.5px;
	color: var(--pw-text-secondary);
	margin: 0 0 12px;
	line-height: 1.5;
}
.lp-chapter-card__meta {
	font-size: 12.5px;
	color: var(--pw-text-muted);
	font-weight: 500;
	margin: 0;
}
.lp-chapter-card__arrow {
	font-size: 22px;
	color: var(--pw-border-light);
	transition: transform 0.2s, color 0.2s;
	align-self: center;
}
.lp-chapter-card__link:hover .lp-chapter-card__arrow {
	transform: translateX(3px);
	color: var(--pw-brand);
}

/* ---------- KAPITEL-HUB (/de/learn/<chapter>) ---------- */
.lp-page__hero {
	background: linear-gradient(180deg, var(--pw-bg-alt) 0%, #fff 100%);
	border-bottom: 1px solid var(--pw-border);
	padding: 96px 0 40px;
}
.lp-breadcrumb {
	font-size: 13px;
	color: var(--pw-text-muted);
	margin: 0 0 14px;
}
.lp-breadcrumb a {
	color: var(--pw-brand);
	text-decoration: none;
}
.lp-breadcrumb a:hover { text-decoration: underline; }
.lp-breadcrumb__sep {
	margin: 0 var(--pw-space-sm);
	color: var(--pw-border-light);
}
.lp-page__title {
	font-size: 38px;
	font-weight: 700;
	line-height: 1.15;
	letter-spacing: -0.02em;
	color: var(--pw-text);
	margin: 0 0 12px;
	max-width: 800px;
}
.lp-page__sub {
	font-size: 18px;
	color: var(--pw-text-secondary);
	margin: 0;
	max-width: 720px;
}

.lp-page__wrap {
	max-width: 1120px;
	margin: 0 auto;
	padding: var(--pw-space-2xl) var(--pw-space-lg) var(--pw-space-3xl);
	display: grid;
	grid-template-columns: 280px 1fr;
	gap: var(--pw-space-2xl);
	align-items: start;
}
.lp-page__main { min-width: 0; }
.lp-page__intro {
	font-size: 17px;
	line-height: 1.6;
	color: #3a3a3c;
	margin: 0 0 var(--pw-space-xl);
	max-width: 760px;
}

.lp-lesson-list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: 12px;
	counter-reset: lp-lesson;
}
.lp-lesson-item__link {
	display: grid;
	grid-template-columns: 40px 1fr auto;
	gap: 18px;
	align-items: start;
	padding: 18px 22px;
	background: #fff;
	border: 1px solid var(--pw-border);
	border-radius: 12px;
	color: inherit;
	text-decoration: none;
	transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.lp-lesson-item__link:hover {
	border-color: var(--pw-brand);
	transform: translateY(-1px);
	box-shadow: var(--pw-shadow-sm);
}
.lp-lesson-item__num {
	font-size: 18px;
	font-weight: 700;
	color: var(--pw-brand);
	font-variant-numeric: tabular-nums;
	line-height: 1.4;
}
.lp-lesson-item__title {
	font-size: 16px;
	font-weight: 600;
	color: var(--pw-text);
	margin: 0 0 var(--pw-space-xs);
	line-height: 1.35;
}
.lp-lesson-item__desc {
	font-size: 13.5px;
	color: var(--pw-text-secondary);
	margin: 0;
	line-height: 1.5;
}
.lp-lesson-item__arrow {
	font-size: 18px;
	color: var(--pw-border-light);
	align-self: center;
	transition: transform 0.2s, color 0.2s;
}
.lp-lesson-item__link:hover .lp-lesson-item__arrow {
	transform: translateX(3px);
	color: var(--pw-brand);
}

/* ---------- SIDEBAR (Kapitel-Navigation, auf Kapitel-Hub + Lektion) ---------- */
.lp-sidebar {
	position: sticky;
	top: 100px;
	display: flex;
	flex-direction: column;
	gap: var(--pw-space-md);
	font-size: 14px;
}
.lp-sidebar__hub-link {
	color: var(--pw-brand);
	font-weight: 600;
	text-decoration: none;
}
.lp-sidebar__hub-link:hover { color: var(--pw-brand-hover); text-decoration: underline; }
.lp-sidebar__label {
	font-size: 11px;
	font-weight: 700;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: var(--pw-text-muted);
	margin: 0 0 10px;
}
.lp-sidebar__chapters {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: var(--pw-space-xs);
}
.lp-sidebar__chapter-link {
	display: grid;
	grid-template-columns: 28px 1fr;
	gap: var(--pw-space-sm);
	padding: var(--pw-space-sm) 10px;
	border-radius: 8px;
	color: var(--pw-text);
	text-decoration: none;
	font-weight: 500;
	transition: background 0.15s;
}
.lp-sidebar__chapter-link:hover { background: var(--pw-bg-alt); }
.lp-sidebar__chapter.is-active > .lp-sidebar__chapter-link {
	background: rgba(var(--pw-brand-rgb),0.08);
	color: var(--pw-brand);
	font-weight: 700;
}
.lp-sidebar__chapter-num {
	font-variant-numeric: tabular-nums;
	color: var(--pw-text-muted);
	font-weight: 600;
}
.lp-sidebar__chapter.is-active .lp-sidebar__chapter-num { color: var(--pw-brand); }
.lp-sidebar__lessons {
	list-style: none;
	margin: var(--pw-space-xs) 0 var(--pw-space-sm) 30px;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: 2px;
	border-left: 2px solid var(--pw-border);
}
.lp-sidebar__lesson a {
	display: flex;
	gap: var(--pw-space-sm);
	padding: 6px 12px;
	color: var(--pw-text-secondary);
	text-decoration: none;
	font-size: 13.5px;
	line-height: 1.4;
	border-left: 2px solid transparent;
	margin-left: -2px;
	transition: color 0.15s, border-color 0.15s;
}
.lp-sidebar__lesson a:hover {
	color: var(--pw-text);
}
.lp-sidebar__lesson.is-current a {
	color: var(--pw-brand);
	font-weight: 600;
	border-left-color: var(--pw-brand);
}
.lp-sidebar__lesson-num {
	font-variant-numeric: tabular-nums;
	flex: 0 0 auto;
}

/* ---------- LEKTION (.learn-lesson) ---------- */
/* Erbt .nb-article__hero-section / .nb-article__wrap / .nb-article__content
   aus blog.css. Hier nur kleine Ergänzungen für Lektion-spezifische Hooks. */
.lp-lesson .nb-article__hero-section {
	background: linear-gradient(180deg, #fff8f0 0%, #fff 100%);
}
.lp-lesson__main-col { min-width: 0; }

/* ---------- LESSON-NAVIGATION (Prev | Übersicht | Next) ---------- */
.lp-lesson-nav {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 12px;
	align-items: stretch;
	margin: 56px 0 var(--pw-space-lg);
	padding: var(--pw-space-lg) 0 0;
	border-top: 1px solid var(--pw-border);
}
.lp-lesson-nav__col {
	display: flex;
	min-width: 0;
	width: 100%;
}
.lp-lesson-nav__col--prev   { justify-content: stretch; }
.lp-lesson-nav__col--next   { justify-content: stretch; }

.lp-lesson-nav__link {
	display: grid;
	grid-template-columns: auto 1fr;
	grid-template-rows: auto auto;
	column-gap: 14px;
	row-gap: 2px;
	align-items: center;
	width: 100%;
	padding: 14px 18px;
	border: 1px solid var(--pw-border);
	border-radius: var(--pw-radius-md);
	background: #fff;
	color: var(--pw-text);
	text-decoration: none;
	transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.lp-lesson-nav__link:hover {
	border-color: var(--pw-brand);
	transform: translateY(-1px);
	box-shadow: var(--pw-shadow-sm);
	text-decoration: none;
}

.lp-lesson-nav__link--prev .lp-lesson-nav__arrow {
	grid-row: 1 / span 2;
	grid-column: 1;
	font-size: 22px;
	color: var(--pw-brand);
	transition: transform 0.2s;
}
.lp-lesson-nav__link--prev:hover .lp-lesson-nav__arrow { transform: translateX(-3px); }
.lp-lesson-nav__link--prev .lp-lesson-nav__direction {
	grid-row: 1; grid-column: 2;
}
.lp-lesson-nav__link--prev .lp-lesson-nav__title {
	grid-row: 2; grid-column: 2;
}

.lp-lesson-nav__link--next {
	grid-template-columns: 1fr auto;
	text-align: right;
}
.lp-lesson-nav__link--next .lp-lesson-nav__arrow {
	grid-row: 1 / span 2;
	grid-column: 2;
	font-size: 22px;
	color: var(--pw-brand);
	transition: transform 0.2s;
}
.lp-lesson-nav__link--next:hover .lp-lesson-nav__arrow { transform: translateX(3px); }
.lp-lesson-nav__link--next .lp-lesson-nav__direction {
	grid-row: 1; grid-column: 1;
}
.lp-lesson-nav__link--next .lp-lesson-nav__title {
	grid-row: 2; grid-column: 1;
}

.lp-lesson-nav__direction {
	font-size: 12px;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.06em;
	color: var(--pw-text-muted);
}
.lp-lesson-nav__title {
	font-size: 15px;
	font-weight: 600;
	color: var(--pw-text);
	line-height: 1.35;
	overflow: hidden;
	text-overflow: ellipsis;
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
}

/* Responsive: stackt unter 700px */
@media (max-width: 700px) {
	.lp-lesson-nav {
		grid-template-columns: 1fr;
		gap: 10px;
	}
	.lp-lesson-nav__col--prev,
	.lp-lesson-nav__col--next {
		justify-content: stretch;
	}
	.lp-lesson-nav__link {
		max-width: none;
		width: 100%;
	}
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
	.lp-lesson-nav { border-top-color: var(--pw-dark-3); }
	.lp-lesson-nav__link {
		background: var(--pw-dark-2);
		border-color: var(--pw-dark-3);
		color: var(--pw-fg);
	}
	.lp-lesson-nav__link:hover { border-color: var(--pw-brand-hover); }
	.lp-lesson-nav__title { color: var(--pw-fg); }
	.lp-lesson-nav__direction { color: var(--pw-text-secondary); }
	.lp-lesson-nav__link--prev .lp-lesson-nav__arrow,
	.lp-lesson-nav__link--next .lp-lesson-nav__arrow { color: var(--pw-brand-hover); }
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 900px) {
	.lp-page__wrap {
		grid-template-columns: 1fr;
		gap: var(--pw-space-xl);
		max-width: 760px;
	}
	.lp-sidebar {
		position: static;
		top: auto;
		order: 2;
	}
	.lp-chapter-grid {
		grid-template-columns: 1fr;
	}
}
@media (max-width: 600px) {
	.lp-hub__title { font-size: 34px; }
	.lp-page__title { font-size: 28px; }
	.lp-hub__hero,
	.lp-page__hero { padding: var(--pw-space-2xl) 0 36px; }
	.lp-chapter-card__link {
		grid-template-columns: 48px 1fr;
		padding: 18px;
	}
	.lp-chapter-card__arrow { display: none; }
}

/* ---------- DARK MODE ---------- */
@media (prefers-color-scheme: dark) {
	.lp-hub__hero,
	.lp-page__hero {
		background: linear-gradient(180deg, var(--pw-dark-1) 0%, var(--pw-dark-2) 100%);
		border-bottom-color: var(--pw-dark-3);
	}
	.lp-hub__title,
	.lp-page__title { color: var(--pw-fg); }
	.lp-hub__sub,
	.lp-page__sub { color: var(--pw-text-secondary); }
	.lp-hub__intro,
	.lp-page__intro { color: var(--pw-border-light); }
	.lp-chapter-card__link,
	.lp-lesson-item__link {
		background: var(--pw-dark-2);
		border-color: var(--pw-dark-3);
	}
	.lp-chapter-card__title,
	.lp-lesson-item__title { color: var(--pw-fg); }
	.lp-chapter-card__desc,
	.lp-lesson-item__desc { color: var(--pw-text-secondary); }
	.lp-chapter-card__num,
	.lp-lesson-item__num { color: var(--pw-brand-hover); }
	.lp-chapter-card__link:hover,
	.lp-lesson-item__link:hover { border-color: var(--pw-brand-hover); }
	.lp-chapter-card__arrow,
	.lp-lesson-item__arrow { color: #48484a; }
	.lp-sidebar__chapter-link { color: var(--pw-fg); }
	.lp-sidebar__chapter-link:hover { background: #1c1c1e; }
	.lp-sidebar__chapter.is-active > .lp-sidebar__chapter-link {
		background: rgba(255,149,48,0.1);
		color: var(--pw-brand-hover);
	}
	.lp-sidebar__lessons { border-left-color: var(--pw-dark-3); }
	.lp-sidebar__lesson a { color: var(--pw-text-secondary); }
	.lp-sidebar__lesson a:hover { color: var(--pw-fg); }
	.lp-sidebar__lesson.is-current a {
		color: var(--pw-brand-hover);
		border-left-color: var(--pw-brand-hover);
	}
	.lp-lesson .nb-article__hero-section {
		background: linear-gradient(180deg, #1f1a14 0%, var(--pw-dark-2) 100%);
	}
}

/* --- Lesson-Meta (Datum unter dem Pageheader) --- */
.lp-lesson__meta {
	font-size: 13px;
	color: var(--pw-text-muted);
	margin: 0 0 var(--pw-space-xl);
	font-variant-numeric: tabular-nums;
}