.c4it-for-each-lab {
	border: 1px solid #d8e2ec;
	border-radius: 8px;
	padding: 18px;
	margin: 24px 0;
	background: #f8fbfd;
	color: #1f2d3d;
	font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.c4it-for-each-lab * {
	box-sizing: border-box;
}

.c4it-for-each-lab__code {
	margin: 0 0 16px;
	padding: 12px 14px;
	border-radius: 6px;
	background: #243447;
	color: #f6f8fa;
	overflow-x: auto;
	font-family: Menlo, Consolas, monospace;
	font-size: 14px;
	line-height: 1.6;
	white-space: pre;
}

.c4it-for-each-lab__stage {
	display: grid;
	grid-template-columns: minmax(180px, 0.9fr) minmax(0, 1.4fr);
	gap: 16px;
	align-items: stretch;
}

.c4it-for-each-lab__panel {
	border: 1px solid #d8e2ec;
	border-radius: 8px;
	background: #fff;
	padding: 14px;
}

.c4it-for-each-lab__label {
	margin: 0 0 10px;
	font-size: 14px;
	font-weight: 700;
	color: #415367;
}

.c4it-for-each-lab__array {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 8px;
	margin: 0;
	padding: 0;
	list-style: none;
}

.c4it-for-each-lab__item {
	min-height: 72px;
	border: 2px solid #d8e2ec;
	border-radius: 8px;
	background: #fff;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 4px;
	transition: border-color .2s, background-color .2s, transform .2s;
}

.c4it-for-each-lab__item.is-active {
	border-color: #1d74b7;
	background: #eaf5ff;
	transform: translateY(-2px);
}

.c4it-for-each-lab__item.is-done {
	border-color: #9fd2b5;
	background: #f0faf4;
}

.c4it-for-each-lab__index {
	font-size: 12px;
	color: #66798d;
}

.c4it-for-each-lab__value {
	font-family: Menlo, Consolas, monospace;
	font-weight: 700;
	color: #1f2d3d;
}

.c4it-for-each-lab__var {
	min-height: 72px;
	border: 2px solid #1d74b7;
	border-radius: 8px;
	background: #eaf5ff;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 10px;
	text-align: center;
	font-family: Menlo, Consolas, monospace;
	font-weight: 700;
	color: #173f63;
}

.c4it-for-each-lab__controls {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	margin: 16px 0 0;
}

.c4it-for-each-lab__button {
	appearance: none;
	border: 1px solid #1d74b7;
	border-radius: 6px;
	background: #1d74b7;
	color: #fff;
	cursor: pointer;
	font-weight: 700;
	padding: 9px 14px;
	line-height: 1.2;
}

.c4it-for-each-lab__button + .c4it-for-each-lab__button {
	background: #fff;
	color: #1d74b7;
}

.c4it-for-each-lab__button:disabled {
	border-color: #aebdcc;
	background: #dbe4ec;
	color: #607286;
	cursor: default;
}

.c4it-for-each-lab__status {
	margin: 14px 0 0;
	padding: 12px;
	border-radius: 6px;
	background: #fff;
	border: 1px solid #d8e2ec;
	color: #33475b;
	min-height: 48px;
}

.c4it-for-each-lab__output {
	margin: 10px 0 0;
	padding: 10px 12px;
	border-radius: 6px;
	background: #243447;
	color: #f6f8fa;
	min-height: 44px;
	font-family: Menlo, Consolas, monospace;
	font-size: 14px;
	white-space: pre-line;
}

@media (max-width: 720px) {
	.c4it-for-each-lab {
		padding: 14px;
	}

	.c4it-for-each-lab__stage {
		grid-template-columns: 1fr;
	}

	.c4it-for-each-lab__array {
		grid-template-columns: 1fr;
	}

	.c4it-for-each-lab__item {
		min-height: 58px;
	}
}