/**
 * Birnie Hidden Water Leak Cost Calculator: frontend styles
 * Design tokens and components mirror the Birnie Drain Problem Checker.
 * Every rule is scoped under .birnie-leak-calculator. No global selectors.
 */

.birnie-leak-calculator {
	--bhlc-brand: #BA0C2F;
	--bhlc-brand-dark: #8f0a25;
	--bhlc-brand-tint: #fdf2f4;
	--bhlc-ink: #1e2228;
	--bhlc-muted: #5c6470;
	--bhlc-line: #e4e7ec;
	--bhlc-surface: #ffffff;
	--bhlc-surface-soft: #f7f8fa;
	--bhlc-radius: 14px;
	--bhlc-radius-sm: 10px;
	--bhlc-shadow: 0 8px 28px rgba(20, 24, 32, 0.08);
	--bhlc-shadow-soft: 0 2px 10px rgba(20, 24, 32, 0.06);
	--bhlc-focus: rgba(186, 12, 47, 0.35);
	--bhlc-verified: #1f7a4d;
	--bhlc-verified-bg: #e7f5ee;
	--bhlc-review: #7a5200;
	--bhlc-review-bg: #fdf3d9;
	--bhlc-manual: #a8380a;
	--bhlc-manual-bg: #ffece1;

	box-sizing: border-box;
	/* The reference tool's font stack resolves to the theme font; inherit it the same way. */
	font-family: inherit;
	color: var(--bhlc-ink);
	font-size: 17px;
	line-height: 1.6;
	max-width: 1080px;
	margin: 0 auto;
	/* Leaves room for a sticky site header when a link jumps to the calculator. */
	scroll-margin-top: 120px;
}

.birnie-leak-calculator *,
.birnie-leak-calculator *::before,
.birnie-leak-calculator *::after {
	box-sizing: inherit;
}

.birnie-leak-calculator [hidden] {
	/* Needed so component display rules never override the hidden attribute. */
	display: none !important;
}

.birnie-leak-calculator .bhlc-sr-only {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

/* ------------------------------------------------------------------ */
/* Header                                                              */
/* ------------------------------------------------------------------ */

.birnie-leak-calculator .bhlc-header {
	text-align: center;
	margin: 0 0 28px;
}

.birnie-leak-calculator .bhlc-title {
	font-size: clamp(1.7rem, 3.5vw, 2.3rem);
	font-weight: 700;
	line-height: 1.2;
	margin: 0 0 10px;
	color: var(--bhlc-ink);
}

.birnie-leak-calculator .bhlc-subtitle {
	font-size: 1.05rem;
	color: var(--bhlc-muted);
	max-width: 680px;
	margin: 0 auto;
}

/* ------------------------------------------------------------------ */
/* Layout                                                              */
/* ------------------------------------------------------------------ */

.birnie-leak-calculator .bhlc-layout {
	display: grid;
	grid-template-columns: 1fr;
	gap: 24px;
	align-items: start;
}

@media (min-width: 900px) {
	.birnie-leak-calculator .bhlc-layout {
		grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
	}

	.birnie-leak-calculator .bhlc-layout.bhlc-layout-single {
		grid-template-columns: minmax(0, 1fr);
	}

	.birnie-leak-calculator .bhlc-result-col {
		position: sticky;
		/* JS lowers this when the column is taller than the screen, so its bottom stays reachable. */
		top: var(--bhlc-sticky-top, 24px);
	}
}

/* ------------------------------------------------------------------ */
/* Form                                                                */
/* ------------------------------------------------------------------ */

.birnie-leak-calculator .bhlc-form {
	background: var(--bhlc-surface);
	border: 1px solid var(--bhlc-line);
	border-radius: var(--bhlc-radius);
	box-shadow: var(--bhlc-shadow);
	padding: 26px 24px;
}

.birnie-leak-calculator .bhlc-fieldset {
	border: 0;
	padding: 0;
	margin: 0 0 30px;
	min-width: 0;
}

.birnie-leak-calculator .bhlc-legend {
	font-size: 1.15rem;
	font-weight: 600;
	padding: 0;
	margin: 0 0 12px;
	color: var(--bhlc-ink);
}

.birnie-leak-calculator .bhlc-required-mark {
	color: var(--bhlc-brand);
}

.birnie-leak-calculator .bhlc-hint {
	margin: -6px 0 12px;
	font-size: 0.95rem;
	color: var(--bhlc-muted);
}

.birnie-leak-calculator .bhlc-field .bhlc-hint {
	margin: -2px 0 8px;
}

.birnie-leak-calculator .bhlc-error,
.birnie-leak-calculator .bhlc-field-error,
.birnie-leak-calculator .bhlc-result-error {
	margin: 0 0 12px;
	padding: 10px 14px;
	font-size: 0.95rem;
	font-weight: 500;
	color: var(--bhlc-brand);
	background: #fdeef1;
	border: 1px solid #f4c3ce;
	border-radius: var(--bhlc-radius-sm);
}

.birnie-leak-calculator .bhlc-field-error {
	margin: 10px 0 0;
}

.birnie-leak-calculator .bhlc-note {
	margin: 0 0 24px;
	font-size: 0.95rem;
	color: var(--bhlc-muted);
}

/* Choice cards */

.birnie-leak-calculator .bhlc-choices {
	display: grid;
	grid-template-columns: 1fr;
	gap: 10px;
}

@media (min-width: 560px) {
	.birnie-leak-calculator .bhlc-choices {
		grid-template-columns: 1fr 1fr;
	}
}

.birnie-leak-calculator .bhlc-choice {
	display: flex;
	align-items: center;
	gap: 12px;
	background: var(--bhlc-surface-soft);
	border: 2px solid var(--bhlc-line);
	border-radius: var(--bhlc-radius-sm);
	padding: 13px 15px;
	cursor: pointer;
	font-size: 1rem;
	line-height: 1.4;
	transition: border-color 0.15s ease, background-color 0.15s ease, box-shadow 0.15s ease;
	margin: 0;
}

.birnie-leak-calculator .bhlc-choice:hover {
	border-color: #c9ced6;
	background: #f1f3f6;
}

.birnie-leak-calculator .bhlc-choice input[type="radio"],
.birnie-leak-calculator .bhlc-choice input[type="checkbox"],
.birnie-leak-calculator .bhlc-check input[type="checkbox"] {
	width: 20px;
	height: 20px;
	min-width: 20px;
	margin: 0;
	accent-color: var(--bhlc-brand);
	cursor: pointer;
}

.birnie-leak-calculator .bhlc-choice:has(input:checked),
.birnie-leak-calculator .bhlc-choice.is-selected {
	border-color: var(--bhlc-brand);
	background: var(--bhlc-brand-tint);
	box-shadow: 0 0 0 1px var(--bhlc-brand) inset;
}

.birnie-leak-calculator .bhlc-choice:has(input:focus-visible),
.birnie-leak-calculator .bhlc-choice.is-focused {
	outline: 3px solid var(--bhlc-focus);
	outline-offset: 2px;
}

.birnie-leak-calculator .bhlc-choice-text {
	flex: 1;
}

.birnie-leak-calculator .bhlc-choice-desc {
	display: block;
	font-size: 0.88rem;
	color: var(--bhlc-muted);
	margin-top: 2px;
}

/* Text, number and select inputs (styled to sit beside the choice cards) */

.birnie-leak-calculator .bhlc-field {
	margin: 0 0 14px;
	min-width: 0;
}

.birnie-leak-calculator .bhlc-field-inline {
	margin-top: 14px;
	max-width: 320px;
}

.birnie-leak-calculator .bhlc-label {
	display: block;
	font-size: 0.98rem;
	font-weight: 600;
	margin: 0 0 6px;
	color: var(--bhlc-ink);
}

.birnie-leak-calculator .bhlc-input {
	display: block;
	width: 100%;
	min-height: 50px;
	font-family: inherit;
	font-size: 1rem;
	line-height: 1.4;
	color: var(--bhlc-ink);
	background: var(--bhlc-surface-soft);
	border: 2px solid var(--bhlc-line);
	border-radius: var(--bhlc-radius-sm);
	padding: 11px 14px;
	margin: 0;
	box-shadow: none;
	transition: border-color 0.15s ease, background-color 0.15s ease;
}

.birnie-leak-calculator .bhlc-input:hover {
	border-color: #c9ced6;
}

.birnie-leak-calculator .bhlc-input:focus {
	border-color: var(--bhlc-brand);
	background: var(--bhlc-surface);
	outline: 3px solid var(--bhlc-focus);
	outline-offset: 2px;
}

.birnie-leak-calculator .bhlc-input[aria-invalid="true"] {
	border-color: var(--bhlc-brand);
}

.birnie-leak-calculator .bhlc-input-short {
	max-width: 200px;
}

.birnie-leak-calculator .bhlc-select {
	-webkit-appearance: none;
	appearance: none;
	padding-right: 42px;
	background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%235c6470' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
	background-repeat: no-repeat;
	background-position: right 16px center;
	cursor: pointer;
}

.birnie-leak-calculator .bhlc-field-row {
	display: grid;
	grid-template-columns: 1fr;
	gap: 0 14px;
}

@media (min-width: 560px) {
	.birnie-leak-calculator .bhlc-field-row {
		grid-template-columns: 1fr 1fr;
	}

	.birnie-leak-calculator .bhlc-field-row-3 {
		grid-template-columns: repeat(3, minmax(0, 1fr));
	}
}

.birnie-leak-calculator .bhlc-field-row .bhlc-field {
	display: flex;
	flex-direction: column;
	justify-content: flex-end;
}

/* Panels */

.birnie-leak-calculator .bhlc-panel {
	margin: 0 0 30px;
	padding: 20px 18px 6px;
	background: var(--bhlc-surface-soft);
	border: 1px solid var(--bhlc-line);
	border-radius: var(--bhlc-radius-sm);
}

.birnie-leak-calculator .bhlc-panel .bhlc-fieldset {
	margin-bottom: 20px;
}

.birnie-leak-calculator .bhlc-panel .bhlc-choice,
.birnie-leak-calculator .bhlc-panel .bhlc-input {
	background: var(--bhlc-surface);
}

.birnie-leak-calculator .bhlc-panel .bhlc-choice:has(input:checked),
.birnie-leak-calculator .bhlc-panel .bhlc-choice.is-selected {
	background: var(--bhlc-brand-tint);
}

.birnie-leak-calculator .bhlc-measure {
	margin: 0 0 14px;
}

.birnie-leak-calculator .bhlc-callout {
	padding: 4px 0 14px;
}

.birnie-leak-calculator .bhlc-callout-title {
	font-size: 1.05rem;
	font-weight: 600;
	margin: 0 0 6px;
}

.birnie-leak-calculator .bhlc-callout-text {
	margin: 0 0 14px;
	color: var(--bhlc-muted);
	font-size: 0.98rem;
}

.birnie-leak-calculator .bhlc-steps {
	margin: 0 0 16px;
	padding-left: 1.3em;
	font-size: 0.95rem;
	color: var(--bhlc-muted);
}

.birnie-leak-calculator .bhlc-steps li {
	margin: 0 0 4px;
}

.birnie-leak-calculator .bhlc-combo {
	position: relative;
}

.birnie-leak-calculator .bhlc-loc-list {
	position: absolute;
	z-index: 20;
	top: calc(100% + 6px);
	left: 0;
	right: 0;
	margin: 0;
	padding: 6px;
	list-style: none;
	max-height: 300px;
	overflow-y: auto;
	background: var(--bhlc-surface);
	border: 1px solid var(--bhlc-line);
	border-radius: var(--bhlc-radius-sm);
	box-shadow: var(--bhlc-shadow);
}

.birnie-leak-calculator .bhlc-loc-option {
	display: flex;
	justify-content: space-between;
	align-items: baseline;
	gap: 12px;
	margin: 0;
	padding: 10px 12px;
	border-radius: 8px;
	cursor: pointer;
	font-size: 1rem;
	line-height: 1.35;
}

.birnie-leak-calculator .bhlc-loc-option:hover,
.birnie-leak-calculator .bhlc-loc-option.is-active {
	background: var(--bhlc-brand-tint);
	color: var(--bhlc-brand-dark);
}

.birnie-leak-calculator .bhlc-loc-option-group {
	font-size: 0.82rem;
	color: var(--bhlc-muted);
	white-space: nowrap;
}

.birnie-leak-calculator .bhlc-loc-option.is-manual {
	border-top: 1px solid var(--bhlc-line);
	border-radius: 0 0 8px 8px;
	margin-top: 4px;
	color: var(--bhlc-brand);
	font-weight: 600;
	font-size: 0.95rem;
}

/* Tariff info under the selector */

.birnie-leak-calculator .bhlc-tariff-info {
	margin: 4px 0 14px;
	padding: 12px 14px;
	font-size: 0.93rem;
	line-height: 1.5;
	background: var(--bhlc-surface-soft);
	border: 1px solid var(--bhlc-line);
	border-radius: var(--bhlc-radius-sm);
	color: var(--bhlc-muted);
}

.birnie-leak-calculator .bhlc-tariff-info p {
	margin: 6px 0 0;
}

.birnie-leak-calculator .bhlc-check {
	display: flex;
	align-items: center;
	gap: 10px;
	margin: 0 0 14px;
	font-size: 0.98rem;
	cursor: pointer;
}

.birnie-leak-calculator .bhlc-check:has(input:focus-visible) {
	outline: 3px solid var(--bhlc-focus);
	outline-offset: 2px;
	border-radius: 4px;
}

.birnie-leak-calculator .bhlc-manual {
	margin: 0 0 4px;
	padding: 18px 18px 4px;
	background: var(--bhlc-surface-soft);
	border: 1px solid var(--bhlc-line);
	border-radius: var(--bhlc-radius-sm);
}

.birnie-leak-calculator .bhlc-manual .bhlc-input {
	background: var(--bhlc-surface);
}

/* Optional section */

.birnie-leak-calculator .bhlc-more {
	margin: 0 0 8px;
	border: 1px solid var(--bhlc-line);
	border-radius: var(--bhlc-radius-sm);
	background: var(--bhlc-surface);
}

.birnie-leak-calculator .bhlc-more-summary {
	list-style: none;
	cursor: pointer;
	font-size: 1.05rem;
	font-weight: 600;
	padding: 14px 48px 14px 18px;
	position: relative;
	color: var(--bhlc-ink);
}

.birnie-leak-calculator .bhlc-more-summary::-webkit-details-marker {
	display: none;
}

.birnie-leak-calculator .bhlc-more-summary::after {
	content: "+";
	position: absolute;
	right: 18px;
	top: 50%;
	transform: translateY(-50%);
	font-size: 1.4rem;
	font-weight: 500;
	color: var(--bhlc-brand);
	line-height: 1;
}

.birnie-leak-calculator .bhlc-more[open] .bhlc-more-summary::after {
	content: "\2212";
}

.birnie-leak-calculator .bhlc-more-summary:hover {
	color: var(--bhlc-brand);
}

.birnie-leak-calculator .bhlc-more-summary:focus-visible {
	outline: 3px solid var(--bhlc-focus);
	outline-offset: -3px;
}

.birnie-leak-calculator .bhlc-more-body {
	padding: 6px 18px 6px;
}

.birnie-leak-calculator .bhlc-more-body > .bhlc-hint {
	margin-top: 0;
}

/* Submit */

.birnie-leak-calculator .bhlc-submit-row {
	margin-top: 22px;
}

/* Buttons */

.birnie-leak-calculator .bhlc-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	font-family: inherit;
	font-size: 1.05rem;
	font-weight: 600;
	line-height: 1.2;
	padding: 14px 24px;
	border-radius: 999px;
	border: 2px solid transparent;
	cursor: pointer;
	text-decoration: none;
	text-align: center;
	transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.1s ease;
	-webkit-appearance: none;
	appearance: none;
}

.birnie-leak-calculator .bhlc-btn:focus-visible {
	outline: 3px solid var(--bhlc-focus);
	outline-offset: 2px;
}

.birnie-leak-calculator .bhlc-btn-primary {
	background: var(--bhlc-brand);
	border-color: var(--bhlc-brand);
	color: #ffffff;
}

.birnie-leak-calculator .bhlc-btn-primary:hover,
.birnie-leak-calculator .bhlc-btn-primary:focus {
	background: var(--bhlc-brand-dark);
	border-color: var(--bhlc-brand-dark);
	color: #ffffff;
}

.birnie-leak-calculator .bhlc-btn-outline {
	background: transparent;
	border-color: var(--bhlc-brand);
	color: var(--bhlc-brand);
}

.birnie-leak-calculator .bhlc-btn-outline:hover,
.birnie-leak-calculator .bhlc-btn-outline:focus {
	background: var(--bhlc-brand-tint);
	color: var(--bhlc-brand-dark);
	border-color: var(--bhlc-brand-dark);
}

.birnie-leak-calculator .bhlc-submit {
	width: 100%;
	font-size: 1.15rem;
	padding: 16px 24px;
}

/* ------------------------------------------------------------------ */
/* Result card                                                         */
/* ------------------------------------------------------------------ */

.birnie-leak-calculator .bhlc-result-card {
	margin-top: 24px;
	scroll-margin-top: 120px;
	background: var(--bhlc-surface);
	border: 1px solid var(--bhlc-line);
	border-radius: var(--bhlc-radius);
	box-shadow: var(--bhlc-shadow);
	padding: 26px 24px;
}

.birnie-leak-calculator .bhlc-result-card:focus {
	outline: none;
}

.birnie-leak-calculator .bhlc-result-card:focus-visible {
	outline: 3px solid var(--bhlc-focus);
	outline-offset: 2px;
}

.birnie-leak-calculator .bhlc-result-default {
	text-align: center;
	padding: 26px 8px;
	color: var(--bhlc-muted);
}

.birnie-leak-calculator .bhlc-result-icon {
	color: var(--bhlc-brand);
	margin-bottom: 12px;
}

.birnie-leak-calculator .bhlc-result-placeholder {
	font-size: 1.05rem;
	margin: 0;
}

.birnie-leak-calculator .bhlc-status-badge,
.birnie-leak-calculator .bhlc-status-pill {
	display: inline-block;
	font-weight: 700;
	letter-spacing: 0.02em;
	text-transform: uppercase;
	border-radius: 999px;
}

.birnie-leak-calculator .bhlc-status-badge {
	font-size: 0.95rem;
	padding: 8px 16px;
	margin-bottom: 4px;
}

.birnie-leak-calculator .bhlc-status-pill {
	font-size: 0.75rem;
	padding: 4px 10px;
	white-space: nowrap;
}

.birnie-leak-calculator [data-status="verified"] {
	background: var(--bhlc-verified-bg);
	color: var(--bhlc-verified);
}

.birnie-leak-calculator [data-status="needs_review"] {
	background: var(--bhlc-review-bg);
	color: var(--bhlc-review);
}

.birnie-leak-calculator [data-status="manual"] {
	background: var(--bhlc-manual-bg);
	color: var(--bhlc-manual);
}

.birnie-leak-calculator .bhlc-result-heading {
	font-size: 0.85rem;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.06em;
	color: var(--bhlc-muted);
	margin: 18px 0 8px;
}

.birnie-leak-calculator .bhlc-result-output p {
	margin: 0;
	font-size: 1rem;
}

/* Stats */

.birnie-leak-calculator .bhlc-stats {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 8px;
	margin: 0;
}

.birnie-leak-calculator .bhlc-stat {
	background: var(--bhlc-surface-soft);
	border: 1px solid var(--bhlc-line);
	border-radius: var(--bhlc-radius-sm);
	padding: 10px 10px 9px;
	min-width: 0;
	display: flex;
	flex-direction: column-reverse;
	justify-content: flex-end;
}

.birnie-leak-calculator .bhlc-stat dt {
	font-size: 0.8rem;
	color: var(--bhlc-muted);
	margin: 2px 0 0;
	font-weight: 500;
}

.birnie-leak-calculator .bhlc-stat dd {
	margin: 0;
	font-size: 1.08rem;
	font-weight: 700;
	line-height: 1.25;
	overflow-wrap: anywhere;
}

.birnie-leak-calculator .bhlc-stats-cost .bhlc-stat {
	background: var(--bhlc-brand-tint);
	border-color: #f4c3ce;
}

.birnie-leak-calculator .bhlc-stats-cost .bhlc-stat dd {
	color: var(--bhlc-brand-dark);
}

.birnie-leak-calculator .bhlc-breakdown {
	margin: 10px 0 0;
	font-size: 0.93rem;
	color: var(--bhlc-muted);
}

.birnie-leak-calculator .bhlc-breakdown table {
	width: 100%;
	border-collapse: collapse;
	margin: 0;
}

.birnie-leak-calculator .bhlc-breakdown th,
.birnie-leak-calculator .bhlc-breakdown td {
	text-align: left;
	padding: 5px 0;
	border-bottom: 1px solid var(--bhlc-line);
	font-weight: 400;
	vertical-align: top;
}

.birnie-leak-calculator .bhlc-breakdown thead th {
	font-size: 0.78rem;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.05em;
}

.birnie-leak-calculator .bhlc-breakdown td,
.birnie-leak-calculator .bhlc-breakdown th.bhlc-num {
	text-align: right;
	white-space: nowrap;
	padding-left: 10px;
}

.birnie-leak-calculator .bhlc-result-output .bhlc-so-far {
	margin-top: 12px;
	padding: 10px 12px;
	border-left: 4px solid var(--bhlc-brand);
	background: var(--bhlc-surface-soft);
	border-radius: 0 var(--bhlc-radius-sm) var(--bhlc-radius-sm) 0;
}

.birnie-leak-calculator .bhlc-rates-used {
	font-size: 0.93rem;
}

.birnie-leak-calculator .bhlc-rates-used p {
	font-size: 0.93rem;
	margin: 0 0 4px;
}

.birnie-leak-calculator .bhlc-rates-used a,
.birnie-leak-calculator .bhlc-tariff-info a,
.birnie-leak-calculator .bhlc-sources a {
	color: var(--bhlc-brand);
	text-decoration: underline;
	text-underline-offset: 2px;
}

.birnie-leak-calculator .bhlc-rates-used a:hover,
.birnie-leak-calculator .bhlc-tariff-info a:hover,
.birnie-leak-calculator .bhlc-sources a:hover {
	color: var(--bhlc-brand-dark);
}

.birnie-leak-calculator .bhlc-assumptions {
	margin: 0;
	padding-left: 1.2em;
	font-size: 0.9rem;
	color: var(--bhlc-muted);
}

.birnie-leak-calculator .bhlc-assumptions li {
	margin: 0 0 5px;
}

.birnie-leak-calculator .bhlc-cta-row {
	display: flex;
	flex-direction: column;
	gap: 10px;
	margin-top: 24px;
}

.birnie-leak-calculator .bhlc-cta-row .bhlc-btn {
	width: 100%;
}

.birnie-leak-calculator .bhlc-result-error {
	margin: 0;
}

.birnie-leak-calculator .bhlc-help-card {
	background: var(--bhlc-surface-soft);
	border: 1px solid var(--bhlc-line);
	border-radius: var(--bhlc-radius);
	box-shadow: var(--bhlc-shadow-soft);
	padding: 20px 18px;
	display: flex;
	flex-direction: column;
	gap: 10px;
}

.birnie-leak-calculator .bhlc-help-title {
	font-size: 1.1rem;
	font-weight: 700;
	line-height: 1.3;
	margin: 0;
	color: var(--bhlc-ink);
}

.birnie-leak-calculator .bhlc-help-text {
	margin: 0 0 4px;
	font-size: 0.93rem;
	color: var(--bhlc-muted);
}

.birnie-leak-calculator .bhlc-help-card .bhlc-btn {
	width: 100%;
}

/* ------------------------------------------------------------------ */
/* Disclaimer                                                          */
/* ------------------------------------------------------------------ */

.birnie-leak-calculator .bhlc-disclaimer {
	margin: 22px auto 0;
	max-width: 760px;
	text-align: center;
	font-size: 0.9rem;
	color: var(--bhlc-muted);
}

/* ------------------------------------------------------------------ */
/* Method, sources, FAQ                                                */
/* ------------------------------------------------------------------ */

.birnie-leak-calculator .bhlc-section-title {
	font-size: 1.5rem;
	font-weight: 700;
	margin: 0 0 18px;
	color: var(--bhlc-ink);
}

.birnie-leak-calculator .bhlc-method,
.birnie-leak-calculator .bhlc-sources,
.birnie-leak-calculator .bhlc-faq,
.birnie-leak-calculator .bhlc-related {
	margin-top: 48px;
}

.birnie-leak-calculator .bhlc-method-body {
	background: var(--bhlc-surface);
	border: 1px solid var(--bhlc-line);
	border-radius: var(--bhlc-radius-sm);
	box-shadow: var(--bhlc-shadow-soft);
	padding: 20px 20px 6px;
	color: var(--bhlc-muted);
}

.birnie-leak-calculator .bhlc-method-body p {
	margin: 0 0 14px;
	font-size: 1rem;
}

.birnie-leak-calculator .bhlc-sources-intro,
.birnie-leak-calculator .bhlc-sources-note {
	color: var(--bhlc-muted);
	font-size: 0.95rem;
	margin: -6px 0 14px;
}

.birnie-leak-calculator .bhlc-sources-note {
	margin: 14px 0 0;
}

.birnie-leak-calculator .bhlc-table-wrap {
	/* Contain absolutely positioned screen-reader text so it can't widen the page. */
	position: relative;
	overflow-x: auto;
	background: var(--bhlc-surface);
	border: 1px solid var(--bhlc-line);
	border-radius: var(--bhlc-radius-sm);
	box-shadow: var(--bhlc-shadow-soft);
}

.birnie-leak-calculator .bhlc-table-wrap:focus-visible {
	outline: 3px solid var(--bhlc-focus);
	outline-offset: 2px;
}

.birnie-leak-calculator .bhlc-table {
	width: 100%;
	min-width: 720px;
	border-collapse: collapse;
	margin: 0;
	font-size: 0.9rem;
	line-height: 1.45;
	border: 0;
}

.birnie-leak-calculator .bhlc-table th,
.birnie-leak-calculator .bhlc-table td {
	text-align: left;
	vertical-align: top;
	padding: 11px 14px;
	border: 0;
	border-bottom: 1px solid var(--bhlc-line);
	background: transparent;
}

.birnie-leak-calculator .bhlc-table thead th {
	font-size: 0.78rem;
	text-transform: uppercase;
	letter-spacing: 0.05em;
	color: var(--bhlc-muted);
	background: var(--bhlc-surface-soft);
	font-weight: 700;
}

.birnie-leak-calculator .bhlc-table tbody th {
	font-weight: 600;
	color: var(--bhlc-ink);
}

.birnie-leak-calculator .bhlc-table tbody tr:last-child th,
.birnie-leak-calculator .bhlc-table tbody tr:last-child td {
	border-bottom: 0;
}

.birnie-leak-calculator .bhlc-faq-list {
	display: grid;
	gap: 12px;
}

.birnie-leak-calculator .bhlc-faq-item {
	background: var(--bhlc-surface);
	border: 1px solid var(--bhlc-line);
	border-radius: var(--bhlc-radius-sm);
	box-shadow: var(--bhlc-shadow-soft);
	overflow: hidden;
}

.birnie-leak-calculator .bhlc-faq-question {
	list-style: none;
	cursor: pointer;
	font-size: 1.05rem;
	font-weight: 600;
	padding: 16px 48px 16px 20px;
	position: relative;
	color: var(--bhlc-ink);
}

.birnie-leak-calculator .bhlc-faq-question::-webkit-details-marker {
	display: none;
}

.birnie-leak-calculator .bhlc-faq-question::after {
	content: "+";
	position: absolute;
	right: 20px;
	top: 50%;
	transform: translateY(-50%);
	font-size: 1.4rem;
	font-weight: 500;
	color: var(--bhlc-brand);
	line-height: 1;
}

.birnie-leak-calculator .bhlc-faq-item[open] .bhlc-faq-question::after {
	content: "\2212";
}

.birnie-leak-calculator .bhlc-faq-question:hover {
	color: var(--bhlc-brand);
}

.birnie-leak-calculator .bhlc-faq-question:focus-visible {
	outline: 3px solid var(--bhlc-focus);
	outline-offset: -3px;
}

.birnie-leak-calculator .bhlc-faq-answer {
	padding: 0 20px 18px;
	color: var(--bhlc-muted);
}

.birnie-leak-calculator .bhlc-faq-answer p {
	margin: 0;
	font-size: 1rem;
}

/* ------------------------------------------------------------------ */
/* Related services                                                    */
/* ------------------------------------------------------------------ */

.birnie-leak-calculator .bhlc-related-list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-wrap: wrap;
	gap: 12px;
}

.birnie-leak-calculator .bhlc-related-item {
	margin: 0;
	padding: 0;
}

.birnie-leak-calculator .bhlc-related-link {
	display: inline-flex;
	align-items: center;
	font-size: 1rem;
	font-weight: 600;
	color: var(--bhlc-ink);
	background: var(--bhlc-surface);
	border: 2px solid var(--bhlc-line);
	border-radius: 999px;
	padding: 11px 20px;
	text-decoration: none;
	box-shadow: var(--bhlc-shadow-soft);
	transition: border-color 0.15s ease, color 0.15s ease, background-color 0.15s ease;
}

.birnie-leak-calculator .bhlc-related-link:hover,
.birnie-leak-calculator .bhlc-related-link:focus {
	border-color: var(--bhlc-brand);
	color: var(--bhlc-brand);
	background: var(--bhlc-brand-tint);
	text-decoration: none;
}

.birnie-leak-calculator .bhlc-related-link:focus-visible {
	outline: 3px solid var(--bhlc-focus);
	outline-offset: 2px;
}

/* ------------------------------------------------------------------ */
/* Reduced motion                                                      */
/* ------------------------------------------------------------------ */

@media (prefers-reduced-motion: reduce) {
	.birnie-leak-calculator *,
	.birnie-leak-calculator *::before,
	.birnie-leak-calculator *::after {
		transition: none !important;
		animation: none !important;
	}
}

/* ------------------------------------------------------------------ */
/* Small phones                                                        */
/* ------------------------------------------------------------------ */

@media (max-width: 420px) {
	.birnie-leak-calculator {
		font-size: 16px;
	}

	.birnie-leak-calculator .bhlc-form,
	.birnie-leak-calculator .bhlc-result-card {
		padding: 20px 16px;
	}

	.birnie-leak-calculator .bhlc-panel {
		padding: 16px 12px 4px;
	}

	.birnie-leak-calculator .bhlc-stats {
		grid-template-columns: 1fr;
	}

	.birnie-leak-calculator .bhlc-stat {
		flex-direction: row-reverse;
		justify-content: space-between;
		align-items: baseline;
		gap: 10px;
	}
}