.afl-lab {
	--afl-bg: #f8fbff;
	--afl-panel: #ffffff;
	--afl-panel-strong: #eef6ff;
	--afl-ink: #14213d;
	--afl-muted: #53657d;
	--afl-border: #d6e3f2;
	--afl-primary: #2563eb;
	--afl-primary-strong: #1d4ed8;
	--afl-accent: #0f766e;
	--afl-warn: #b45309;
	--afl-danger: #b91c1c;
	--afl-good: #047857;
	--afl-grid: rgba(20, 33, 61, 0.12);
	--afl-shadow: 0 18px 50px rgba(20, 33, 61, 0.12);

	box-sizing: border-box;
	margin: 2rem 0;
	padding: clamp(1rem, 2.5vw, 2rem);
	border: 1px solid var(--afl-border);
	border-radius: 24px;
	background: linear-gradient(135deg, var(--afl-bg), #fff);
	color: var(--afl-ink);
	font-family: inherit;
	box-shadow: var(--afl-shadow);
}

.afl-lab *,
.afl-lab *::before,
.afl-lab *::after {
	box-sizing: border-box;
}

.afl-lab :where(h2, h3, p) {
	margin-top: 0;
}

.afl-lab__header {
	max-width: 900px;
	margin-bottom: 1rem;
}

.afl-lab__eyebrow {
	margin-bottom: 0.35rem;
	color: var(--afl-primary);
	font-size: 0.78rem;
	font-weight: 800;
	letter-spacing: 0.08em;
	text-transform: uppercase;
}

.afl-lab__header h2 {
	margin-bottom: 0.45rem;
	font-size: clamp(1.65rem, 3vw, 2.5rem);
	line-height: 1.08;
}

.afl-lab__header p,
.afl-control p,
.afl-card p,
.afl-explainer,
.afl-teacher-notes li {
	color: var(--afl-muted);
	line-height: 1.55;
}

.afl-lab__notice {
	margin: 1rem 0 1.25rem;
	padding: 0.9rem 1rem;
	border: 1px solid #fde68a;
	border-radius: 16px;
	background: #fffbeb;
	color: #713f12;
}

.afl-lab__workspace {
	display: grid;
	grid-template-columns: minmax(260px, 0.85fr) minmax(320px, 1.6fr);
	gap: 1.25rem;
	align-items: start;
}

.afl-lab__controls,
.afl-card,
.afl-quiz,
.afl-teacher-notes {
	border: 1px solid var(--afl-border);
	border-radius: 20px;
	background: var(--afl-panel);
}

.afl-lab__controls {
	position: sticky;
	top: 1rem;
	padding: 1rem;
}

.afl-control {
	padding: 0.95rem 0;
	border-bottom: 1px solid var(--afl-border);
}

.afl-control:first-child {
	padding-top: 0;
}

.afl-control:last-of-type {
	border-bottom: 0;
}

.afl-control__topline {
	display: flex;
	gap: 0.75rem;
	align-items: center;
	justify-content: space-between;
	margin-bottom: 0.55rem;
}

.afl-control label {
	font-weight: 800;
}

.afl-control__value {
	min-width: 5.4rem;
	padding: 0.25rem 0.5rem;
	border-radius: 999px;
	background: var(--afl-panel-strong);
	color: var(--afl-primary-strong);
	font-variant-numeric: tabular-nums;
	font-weight: 800;
	text-align: center;
}

.afl-control input[type='range'] {
	width: 100%;
	accent-color: var(--afl-primary);
}

.afl-control select {
	width: 100%;
	padding: 0.65rem 0.75rem;
	border: 1px solid var(--afl-border);
	border-radius: 12px;
	background: #fff;
	color: var(--afl-ink);
	font: inherit;
}

.afl-control p {
	margin: 0.45rem 0 0;
	font-size: 0.92rem;
}

.afl-button-row {
	display: flex;
	flex-wrap: wrap;
	gap: 0.55rem;
	margin-top: 1rem;
}

.afl-button,
.afl-quiz button {
	appearance: none;
	border: 1px solid var(--afl-border);
	border-radius: 999px;
	background: #fff;
	color: var(--afl-ink);
	cursor: pointer;
	font: inherit;
	font-weight: 800;
	line-height: 1;
	transition: transform 0.14s ease, box-shadow 0.14s ease, background 0.14s ease, border-color 0.14s ease;
}

.afl-button {
	padding: 0.75rem 0.95rem;
}

.afl-button--primary {
	border-color: var(--afl-primary);
	background: var(--afl-primary);
	color: #fff;
}

.afl-button--quiet {
	background: var(--afl-panel-strong);
}

.afl-button:hover:not(:disabled),
.afl-quiz button:hover {
	transform: translateY(-1px);
	box-shadow: 0 10px 24px rgba(20, 33, 61, 0.16);
}

.afl-button:focus-visible,
.afl-quiz button:focus-visible,
.afl-control input:focus-visible,
.afl-control select:focus-visible,
.afl-teacher-notes summary:focus-visible {
	outline: 3px solid rgba(37, 99, 235, 0.35);
	outline-offset: 3px;
}

.afl-button:disabled {
	cursor: not-allowed;
	opacity: 0.55;
}

.afl-status {
	min-height: 1.5rem;
	margin: 1rem 0 0;
	color: var(--afl-muted);
	font-weight: 700;
}

.afl-lab__visuals {
	display: grid;
	gap: 1rem;
}

.afl-card {
	padding: 1rem;
}

.afl-card--canvas {
	overflow: hidden;
	padding: 0;
}

.afl-card__heading {
	padding: 1rem 1rem 0.25rem;
}

.afl-card__heading h3,
.afl-concepts h3,
.afl-quiz h3 {
	margin-bottom: 0.25rem;
	font-size: 1.08rem;
}

.afl-card__heading p {
	margin-bottom: 0.75rem;
}

.afl-card canvas {
	display: block;
	width: 100%;
	height: clamp(220px, 30vw, 300px);
	border-top: 1px solid var(--afl-border);
	background: linear-gradient(180deg, #fff, #f8fbff);
}

.afl-stats {
	display: grid;
	grid-template-columns: repeat(4, minmax(0, 1fr));
	gap: 0.75rem;
}

.afl-stats div {
	padding: 0.85rem;
	border: 1px solid var(--afl-border);
	border-radius: 16px;
	background: var(--afl-panel);
}

.afl-stats span {
	display: block;
	margin-bottom: 0.25rem;
	color: var(--afl-muted);
	font-size: 0.78rem;
	font-weight: 800;
	letter-spacing: 0.04em;
	text-transform: uppercase;
}

.afl-stats strong {
	display: block;
	font-size: 1.05rem;
	font-variant-numeric: tabular-nums;
}

.afl-stats strong[data-state='good'] {
	color: var(--afl-good);
}

.afl-stats strong[data-state='warn'] {
	color: var(--afl-warn);
}

.afl-stats strong[data-state='danger'] {
	color: var(--afl-danger);
}

.afl-explainer {
	margin: 0;
	padding: 0.9rem 1rem;
	border-left: 4px solid var(--afl-primary);
	border-radius: 12px;
	background: var(--afl-panel-strong);
}

.afl-explainer[data-state='warn'] {
	border-left-color: var(--afl-warn);
	background: #fffbeb;
	color: #713f12;
}

.afl-explainer[data-state='danger'] {
	border-left-color: var(--afl-danger);
	background: #fef2f2;
	color: #7f1d1d;
}

.afl-concepts {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 1rem;
	margin-top: 1.25rem;
}

.afl-concepts .afl-card {
	background: linear-gradient(180deg, #fff, var(--afl-panel-strong));
}

.afl-quiz,
.afl-teacher-notes {
	margin-top: 1.25rem;
	padding: 1rem;
}

.afl-quiz__question {
	margin-top: 1rem;
	padding-top: 1rem;
	border-top: 1px solid var(--afl-border);
}

.afl-quiz__question p {
	margin-bottom: 0.6rem;
	font-weight: 800;
}

.afl-quiz button {
	margin: 0 0.45rem 0.45rem 0;
	padding: 0.65rem 0.85rem;
}

.afl-quiz button[aria-pressed='true'][data-afl-correct='true'] {
	border-color: var(--afl-good);
	background: #ecfdf5;
	color: #065f46;
}

.afl-quiz button[aria-pressed='true']:not([data-afl-correct='true']) {
	border-color: var(--afl-danger);
	background: #fef2f2;
	color: #7f1d1d;
}

.afl-quiz__result {
	margin: 1rem 0 0;
	font-weight: 800;
}

.afl-quiz__result[data-state='good'] {
	color: var(--afl-good);
}

.afl-quiz__result[data-state='warn'] {
	color: var(--afl-danger);
}

.afl-teacher-notes summary {
	cursor: pointer;
	font-weight: 900;
}

.afl-teacher-notes ul {
	margin: 1rem 0 0;
	padding-left: 1.2rem;
}

.afl-teacher-notes li + li {
	margin-top: 0.45rem;
}

@media (max-width: 980px) {
	.afl-lab__workspace {
		grid-template-columns: 1fr;
	}

	.afl-lab__controls {
		position: static;
	}

	.afl-stats,
	.afl-concepts {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
}

@media (max-width: 620px) {
	.afl-lab {
		border-radius: 18px;
	}

	.afl-stats,
	.afl-concepts {
		grid-template-columns: 1fr;
	}

	.afl-control__topline {
		align-items: flex-start;
		flex-direction: column;
		gap: 0.35rem;
	}

	.afl-control__value {
		text-align: left;
	}

	.afl-button,
	.afl-quiz button {
		width: 100%;
	}
}