.ibt-bmi-tool {
	--ibt-bg: #fbfcfd;
	--ibt-ink: #17212b;
	--ibt-muted: #5e6b76;
	--ibt-line: #d9e1e8;
	--ibt-primary: #126b63;
	--ibt-primary-strong: #0a514b;
	--ibt-secondary: #f3f6f8;
	--ibt-alert: #9d2f22;
	--ibt-radius: 8px;
	color: var(--ibt-ink);
	font-family: inherit;
	margin: 1.5rem 0;
}

.ibt-bmi-tool *,
.ibt-bmi-tool *::before,
.ibt-bmi-tool *::after {
	box-sizing: border-box;
}

.ibt-bmi-tool__inner {
	background: var(--ibt-bg);
	border: 1px solid var(--ibt-line);
	border-radius: var(--ibt-radius);
	box-shadow: 0 12px 36px rgba(23, 33, 43, 0.08);
	max-width: 720px;
	padding: clamp(1rem, 3vw, 1.5rem);
}

.ibt-bmi-tool__header {
	margin-bottom: 1rem;
}

.ibt-bmi-tool__title {
	color: var(--ibt-ink);
	font-size: clamp(1.35rem, 2vw, 1.8rem);
	line-height: 1.2;
	margin: 0;
}

.ibt-bmi-tool__form {
	display: grid;
	gap: 1rem;
}

.ibt-bmi-tool__unit-group {
	align-items: center;
	border: 0;
	display: inline-grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: 0.25rem;
	margin: 0;
	max-width: 280px;
	padding: 0.25rem;
	background: #e8eef2;
	border-radius: var(--ibt-radius);
}

.ibt-bmi-tool__legend {
	height: 1px;
	margin: -1px;
	overflow: hidden;
	padding: 0;
	position: absolute;
	width: 1px;
	clip: rect(0 0 0 0);
	white-space: nowrap;
}

.ibt-bmi-tool__unit-option {
	cursor: pointer;
	display: block;
	margin: 0;
	position: relative;
	text-align: center;
}

.ibt-bmi-tool__unit-option input {
	height: 1px;
	opacity: 0;
	position: absolute;
	width: 1px;
}

.ibt-bmi-tool__unit-option span {
	border-radius: calc(var(--ibt-radius) - 2px);
	color: var(--ibt-muted);
	display: block;
	font-size: 0.94rem;
	font-weight: 700;
	line-height: 1.2;
	padding: 0.65rem 0.85rem;
	transition: background-color 160ms ease, color 160ms ease, box-shadow 160ms ease;
}

.ibt-bmi-tool__unit-option input:focus-visible + span {
	outline: 3px solid rgba(18, 107, 99, 0.32);
	outline-offset: 2px;
}

.ibt-bmi-tool__unit-option input:checked + span {
	background: #ffffff;
	box-shadow: 0 1px 5px rgba(23, 33, 43, 0.12);
	color: var(--ibt-primary-strong);
}

.ibt-bmi-tool__fields {
	display: grid;
	gap: 0.85rem;
	grid-template-columns: repeat(2, minmax(0, 1fr));
}

.ibt-bmi-tool__field {
	display: grid;
	gap: 0.35rem;
	min-width: 0;
}

.ibt-bmi-tool__field--wide {
	grid-column: 1 / -1;
}

.ibt-bmi-tool__field label {
	color: var(--ibt-ink);
	font-size: 0.95rem;
	font-weight: 700;
	line-height: 1.35;
}

.ibt-bmi-tool__field label span {
	color: var(--ibt-muted);
	font-weight: 600;
}

.ibt-bmi-tool__field input {
	background: #ffffff;
	border: 1px solid var(--ibt-line);
	border-radius: var(--ibt-radius);
	color: var(--ibt-ink);
	font: inherit;
	min-height: 48px;
	padding: 0.72rem 0.8rem;
	width: 100%;
}

.ibt-bmi-tool__field input:focus {
	border-color: var(--ibt-primary);
	box-shadow: 0 0 0 3px rgba(18, 107, 99, 0.16);
	outline: 0;
}

.ibt-bmi-tool__actions {
	display: flex;
	flex-wrap: wrap;
	gap: 0.65rem;
}

.ibt-bmi-tool__button {
	align-items: center;
	background: var(--ibt-primary);
	border: 1px solid var(--ibt-primary);
	border-radius: var(--ibt-radius);
	color: #ffffff;
	cursor: pointer;
	display: inline-flex;
	font: inherit;
	font-weight: 800;
	justify-content: center;
	line-height: 1.2;
	min-height: 46px;
	padding: 0.72rem 1rem;
	text-decoration: none;
	transition: background-color 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.ibt-bmi-tool__button:hover,
.ibt-bmi-tool__button:focus {
	background: var(--ibt-primary-strong);
	border-color: var(--ibt-primary-strong);
	color: #ffffff;
}

.ibt-bmi-tool__button:focus-visible {
	outline: 3px solid rgba(18, 107, 99, 0.32);
	outline-offset: 2px;
}

.ibt-bmi-tool__button:active {
	transform: translateY(1px);
}

.ibt-bmi-tool__button--secondary {
	background: var(--ibt-secondary);
	border-color: var(--ibt-line);
	color: var(--ibt-ink);
}

.ibt-bmi-tool__button--secondary:hover,
.ibt-bmi-tool__button--secondary:focus {
	background: #e6edf1;
	border-color: #c6d2dc;
	color: var(--ibt-ink);
}

.ibt-bmi-tool__result {
	background: #ffffff;
	border: 1px solid var(--ibt-line);
	border-left: 5px solid var(--ibt-primary);
	border-radius: var(--ibt-radius);
	margin-top: 1rem;
	padding: 1rem;
}

.ibt-bmi-tool__eyebrow,
.ibt-bmi-tool__score,
.ibt-bmi-tool__category,
.ibt-bmi-tool__range,
.ibt-bmi-tool__error,
.ibt-bmi-tool__disclaimer {
	margin: 0;
}

.ibt-bmi-tool__eyebrow {
	color: var(--ibt-muted);
	font-size: 0.82rem;
	font-weight: 800;
	letter-spacing: 0;
	text-transform: uppercase;
}

.ibt-bmi-tool__score {
	color: var(--ibt-primary-strong);
	font-size: clamp(2.4rem, 6vw, 4rem);
	font-weight: 900;
	line-height: 1;
	margin-top: 0.3rem;
}

.ibt-bmi-tool__category {
	color: var(--ibt-ink);
	font-size: 1.15rem;
	font-weight: 800;
	margin-top: 0.35rem;
}

.ibt-bmi-tool__range {
	color: var(--ibt-muted);
	line-height: 1.45;
	margin-top: 0.25rem;
}

.ibt-bmi-tool__error {
	color: var(--ibt-alert);
	font-weight: 700;
	margin-top: 0.8rem;
}

.ibt-bmi-tool__disclaimer {
	color: var(--ibt-muted);
	font-size: 0.88rem;
	line-height: 1.5;
	margin-top: 1rem;
}

@media (max-width: 540px) {
	.ibt-bmi-tool__inner {
		padding: 1rem;
	}

	.ibt-bmi-tool__unit-group,
	.ibt-bmi-tool__fields {
		grid-template-columns: 1fr;
		max-width: none;
	}

	.ibt-bmi-tool__actions {
		display: grid;
		grid-template-columns: 1fr;
	}
}