:root {
	--ink: #1f2933;
	--muted: #66717c;
	--paper: #f7f4ee;
	--card: #fffdf9;
	--accent: #d95d39;
	--accent-dark: #ad3f25;
	--line: #e6dfd5;
	--shadow: 0 18px 45px rgba(62, 47, 33, 0.1);
}

* {
	box-sizing: border-box;
}

body {
	margin: 0;
	color: var(--ink);
	background: var(--paper);
	font-family: Georgia, 'Times New Roman', serif;
}

.page-shell {
	width: min(1180px, calc(100% - 40px));
	margin: 0 auto;
	padding: 64px 0 80px;
}

.site-header {
	max-width: 680px;
	margin-bottom: 42px;
}

.eyebrow,
.lesson-category,
dt {
	margin: 0;
	color: var(--accent-dark);
	font-family: Arial, sans-serif;
	font-size: 0.72rem;
	font-weight: 700;
	letter-spacing: 0.12em;
	text-transform: uppercase;
}

h1,
h2,
p {
	margin-top: 0;
}

h1 {
	max-width: 640px;
	margin-bottom: 18px;
	font-size: clamp(2.8rem, 7vw, 5.7rem);
	font-weight: 400;
	line-height: 0.96;
}

.intro {
	max-width: 510px;
	margin-bottom: 0;
	color: var(--muted);
	font-family: Arial, sans-serif;
	font-size: 1rem;
	line-height: 1.6;
}

.lesson-controls {
	display: flex;
	align-items: center;
	flex-wrap: wrap;
	gap: 12px;
	margin-bottom: 24px;
	font-family: Arial, sans-serif;
}

.lesson-controls label {
	font-size: 0.9rem;
	font-weight: 700;
}

.lesson-controls select {
	padding: 9px 12px;
	color: var(--ink);
	background: var(--card);
	border: 1px solid var(--line);
	border-radius: 2px;
	font: inherit;
}

.lesson-controls .sort-direction {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	margin-left: 8px;
	font-weight: 400;
}

.sort-direction input {
	width: 16px;
	height: 16px;
	margin: 0;
	accent-color: var(--accent);
}

.lesson-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 24px;
}

.lesson-card {
	overflow: hidden;
	background: var(--card);
	border: 1px solid var(--line);
	box-shadow: var(--shadow);
}

.lesson-image {
	display: block;
	width: 100%;
	height: 210px;
	object-fit: cover;
	background: #e7ddd0;
}

.lesson-content {
	padding: 25px;
}

.lesson-category {
	margin-bottom: 12px;
}

h2 {
	margin-bottom: 24px;
	font-size: 1.85rem;
	font-weight: 400;
}

.lesson-details {
	display: flex;
	gap: 32px;
	margin: 0 0 25px;
}

.lesson-details div {
	min-width: 0;
}

dt {
	margin-bottom: 6px;
	color: var(--muted);
	font-size: 0.65rem;
	letter-spacing: 0.08em;
}

dd {
	margin: 0;
	font-family: Arial, sans-serif;
	font-size: 0.92rem;
}

button {
	width: 100%;
	padding: 12px 16px;
	color: #fffaf4;
	background: var(--accent);
	border: 0;
	border-radius: 2px;
	cursor: pointer;
	font-family: Arial, sans-serif;
	font-size: 0.82rem;
	font-weight: 700;
	transition: background 160ms ease, transform 160ms ease;
}

button:hover {
	background: var(--accent-dark);
	transform: translateY(-2px);
}

button:disabled,
button:disabled:hover {
	background: var(--muted);
	cursor: not-allowed;
	transform: none;
}

@media (max-width: 850px) {
	.lesson-grid {
		grid-template-columns: repeat(2, 1fr);
	}
}

@media (max-width: 560px) {
	.page-shell {
		width: min(100% - 28px, 420px);
		padding-top: 38px;
	}

	h1 {
		font-size: 3.2rem;
	}

	.lesson-grid {
		grid-template-columns: 1fr;
	}
}