/* Index page-specific styles */

body {
	background: var(--color-surface, #f9fafb);
	counter-reset: section;
}

.site-header {
	background: var(--color-primary, #16a34a);
	color: white;
	padding: 3rem 1.5rem;
	box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
}

.site-header .breadcrumb {
	font-size: 0.875rem;
	opacity: 0.9;
	margin-bottom: 0.5rem;
}

.site-header .breadcrumb a {
	color: white;
	text-decoration: none;
}

.site-header .breadcrumb a:hover {
	text-decoration: underline;
}

.site-header .container {
	max-width: 80rem;
	margin: 0 auto;
}

.site-header h1 {
	font-size: clamp(2rem, 5vw, 3rem);
	font-weight: 700;
	margin-bottom: 0.5rem;
	line-height: 1.25;
}

.site-header .subtitle {
	font-size: clamp(1rem, 2vw, 1.125rem);
	opacity: 0.95;
	font-weight: 400;
}

.main-content {
	flex: 1;
	padding: 2rem 1.5rem;
}

.main-content .container {
	max-width: 80rem;
	margin: 0 auto;
}

.intro-card {
	background: white;
	padding: 2rem;
	border-radius: 0.75rem;
	box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
	margin-bottom: 2rem;
	border-left: 4px solid var(--color-primary, #16a34a);
}

.intro-card h2 {
	font-size: 1.5rem;
	font-weight: 600;
	margin-bottom: 1rem;
}

.intro-card p {
	font-size: 1rem;
	line-height: 1.75;
	color: var(--color-text-muted, #6b7280);
	max-width: 65ch;
}

.intro-card p + p {
	margin-top: 1rem;
}

/* Section counter styling */
.section-heading {
	font-size: 1.875rem;
	font-weight: 700;
	margin: 3rem 0 1.5rem;
	color: var(--color-text, #111827);
	border-bottom: 2px solid var(--color-border, #e5e7eb);
	padding-bottom: 0.75rem;
	counter-increment: section;
	counter-reset: lesson;
}

.section-heading:first-of-type {
	margin-top: 0;
}

.section-heading::before {
	content: counter(section, decimal-leading-zero) ". ";
}

.tutorial-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(min(100%, 20rem), 1fr));
	gap: 1.5rem;
	margin-bottom: 2rem;
	counter-reset: lesson;
}

.tutorial-card {
	background: white;
	border-radius: 0.75rem;
	padding: 1.5rem;
	box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
	transition: all 200ms ease;
	text-decoration: none;
	color: inherit;
	display: flex;
	flex-direction: column;
	border: 1px solid var(--color-border, #e5e7eb);
	counter-increment: lesson;
}

.tutorial-card:hover {
	box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1);
	transform: translateY(-2px);
	border-color: var(--color-primary, #16a34a);
}

.tutorial-card:hover .tutorial-title {
	color: var(--color-primary, #16a34a);
}

/* Auto-generated lesson number */
.tutorial-title::before {
	content: counter(section, decimal-leading-zero) "." counter(lesson, decimal-leading-zero) " ";
	color: var(--color-primary, #16a34a);
	font-weight: 700;
}

.tutorial-title {
	color: var(--color-primary, #16a34a);
	font-size: 1.25rem;
	font-weight: 600;
	margin-bottom: 0.75rem;
	transition: color 150ms ease;
}

.tutorial-description {
	font-size: 0.875rem;
	color: var(--color-text-muted, #6b7280);
	line-height: 1.75;
	flex: 1;
	margin-bottom: 1rem;
}

/* Pill-style difficulty indicator */
.difficulty-pill {
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	padding: 0.375rem 0.875rem;
	border-radius: 9999px;
	font-size: 0.75rem;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.05em;
	width: fit-content;
}

.difficulty-pill::before {
	content: "";
	display: inline-block;
	width: 8px;
	height: 8px;
	border-radius: 50%;
}

.difficulty-pill[data-level="beginner"] {
	background: #dcfce7;
	color: #15803d;
}

.difficulty-pill[data-level="beginner"]::before {
	background: #15803d;
}

.difficulty-pill[data-level="intermediate"] {
	background: #fef3c7;
	color: #92400e;
}

.difficulty-pill[data-level="intermediate"]::before {
	background: #92400e;
}

.difficulty-pill[data-level="advanced"] {
	background: #fecaca;
	color: #991b1b;
}

.difficulty-pill[data-level="advanced"]::before {
	background: #991b1b;
}

/* Navigation sections (Examples, Reference, Resources) */
.nav-sections {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
	gap: 1.5rem;
	margin-top: 3rem;
	margin-bottom: 3rem;
}

.nav-card {
	background: white;
	border-radius: 0.75rem;
	padding: 2rem;
	box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
	border: 1px solid var(--color-border, #e5e7eb);
	text-decoration: none;
	color: inherit;
	transition: all 200ms ease;
	display: flex;
	flex-direction: column;
	gap: 1rem;
}

.nav-card:hover {
	box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1);
	transform: translateY(-2px);
	border-color: var(--color-primary, #16a34a);
}

.nav-card-icon {
	width: 3rem;
	height: 3rem;
	border-radius: 0.75rem;
	background: #dcfce7;
	color: var(--color-primary, #16a34a);
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 1.5rem;
	font-weight: 700;
}

.nav-card h3 {
	font-size: 1.25rem;
	font-weight: 600;
	margin: 0;
	transition: color 150ms ease;
}

.nav-card:hover h3 {
	color: var(--color-primary, #16a34a);
}

.nav-card p {
	font-size: 0.875rem;
	color: var(--color-text-muted, #6b7280);
	line-height: 1.75;
	margin: 0;
}

.nav-card-badge {
	display: inline-block;
	padding: 0.25rem 0.625rem;
	background: #f3f4f6;
	color: #6b7280;
	border-radius: 0.375rem;
	font-size: 0.75rem;
	font-weight: 500;
	width: fit-content;
}

.site-footer {
	background: white;
	border-top: 1px solid var(--color-border, #e5e7eb);
	padding: 1.5rem;
	text-align: center;
	color: var(--color-text-muted, #6b7280);
	font-size: 0.875rem;
}