/* Concrete Slab Calculator – CraftFrame Tools */

.cf-tool.cf-slab {
	--cf-bg: #faf9f7;
	--cf-border: #e8e6e3;
	--cf-text: #1c1b19;
	--cf-text-muted: #6b6560;
	--cf-accent: #F0844E;
	--cf-accent-hover: #F6C143;
	--cf-accent-active: #e07840;
	--cf-accent-text: #1c1b19;
	--cf-pill-bg: #ebe9e6;
	--cf-pill-active-bg: #1c1b19;
	--cf-pill-active-text: #ffffff;
	--cf-input-bg: #ffffff;
	--cf-input-border: #e0ddd9;
	--cf-input-focus: #F0844E;
	--cf-suffix: #6b6560;
	--cf-result-bg: #f5f4f2;
	--cf-result-border: transparent;
	--cf-error-bg: #fdf2f0;
	--cf-error-border: #f0c9c4;
	--cf-error-text: #9c3026;
	--cf-warning-bg: #fffbeb;
	--cf-warning-border: #fcd34d;
	--cf-warning-text: #92400e;
	--cf-radius: 10px;
	--cf-radius-pill: 999px;
	--cf-space: 1rem;
	--cf-space-sm: 0.5rem;
	--cf-space-lg: 1.5rem;
	--cf-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
	--cf-transition: 0.15s ease;

	max-width: 760px;
	margin-left: auto;
	margin-right: auto;
	padding: var(--cf-space-lg);
	background: var(--cf-bg);
	border: 1px solid var(--cf-border);
	border-radius: var(--cf-radius);
	box-shadow: var(--cf-shadow);
	font-size: 1rem;
	line-height: 1.5;
	color: var(--cf-text);
	box-sizing: border-box;
}

.cf-tool.cf-slab *,
.cf-tool.cf-slab *::before,
.cf-tool.cf-slab *::after {
	box-sizing: inherit;
}

/* ----- Title ----- */
.cf-tool.cf-slab .cf-tool-title {
	margin: 0 0 var(--cf-space-lg);
	font-size: 1.375rem;
	font-weight: 600;
	color: var(--cf-text);
	letter-spacing: -0.02em;
}

/* ----- Units label + toggle ----- */
.cf-tool.cf-slab .cf-field-units {
	display: grid;
	grid-template-columns: 1fr;
	grid-template-rows: auto auto;
	gap: var(--cf-space-sm);
	margin-bottom: var(--cf-space);
}

.cf-tool.cf-slab .cf-field-units label {
	font-size: 0.8125rem;
	font-weight: 500;
	color: var(--cf-text-muted);
}

.cf-tool.cf-slab .cf-field-units .cf-unit-toggle {
	margin-bottom: 0;
}

.cf-tool.cf-slab .cf-units-hint {
	margin: var(--cf-space-sm) 0 0;
	font-size: 0.75rem;
	color: var(--cf-text-muted);
	font-style: italic;
}

/* ----- Segmented pill toggle (unit) ----- */
.cf-tool.cf-slab .cf-unit-toggle {
	display: inline-flex;
	align-items: stretch;
	gap: 0;
	min-width: 8rem;
	padding: 4px;
	background: var(--cf-pill-bg);
	border-radius: var(--cf-radius-pill);
	margin-bottom: var(--cf-space);
	transition: background-color var(--cf-transition);
}

.cf-tool.cf-slab .cf-unit-toggle button {
	display: flex;
	align-items: center;
	justify-content: center;
	flex: 1 1 0;
	min-width: 2.5rem;
	height: 2.25rem;
	padding: 0 1rem;
	border: none;
	border-radius: var(--cf-radius-pill);
	background: transparent;
	color: var(--cf-text-muted);
	font-size: 0.875rem;
	font-weight: 500;
	line-height: 1.2;
	cursor: pointer;
	transition: background-color var(--cf-transition), color var(--cf-transition);
	-webkit-tap-highlight-color: transparent;
}

.cf-tool.cf-slab .cf-unit-toggle button:hover {
	color: var(--cf-text);
}

.cf-tool.cf-slab .cf-unit-toggle button[aria-selected="true"] {
	background: var(--cf-pill-active-bg);
	color: var(--cf-pill-active-text);
}

.cf-tool.cf-slab .cf-unit-toggle button:focus-visible {
	outline: 2px solid var(--cf-accent);
	outline-offset: 2px;
}

/* ----- Waste button group ----- */
.cf-tool.cf-slab .cf-field-waste {
	grid-template-rows: auto auto auto;
}

.cf-tool.cf-slab .cf-waste-toggle {
	display: inline-flex;
	align-items: stretch;
	gap: 0;
	min-width: 12rem;
	padding: 4px;
	background: var(--cf-pill-bg);
	border-radius: var(--cf-radius-pill);
	margin-bottom: 0;
	transition: background-color var(--cf-transition);
	grid-column: 1 / -1;
}

.cf-tool.cf-slab .cf-waste-toggle button {
	display: flex;
	align-items: center;
	justify-content: center;
	flex: 1 1 0;
	min-width: 0;
	height: 2.25rem;
	padding: 0 0.5rem;
	border: none;
	border-radius: var(--cf-radius-pill);
	background: transparent;
	color: var(--cf-text-muted);
	font-size: 0.8125rem;
	font-weight: 500;
	cursor: pointer;
	transition: background-color var(--cf-transition), color var(--cf-transition);
	-webkit-tap-highlight-color: transparent;
}

.cf-tool.cf-slab .cf-waste-toggle button:hover {
	color: var(--cf-text);
}

.cf-tool.cf-slab .cf-waste-toggle button[aria-selected="true"] {
	background: var(--cf-pill-active-bg);
	color: var(--cf-pill-active-text);
}

.cf-tool.cf-slab .cf-waste-toggle button:focus-visible {
	outline: 2px solid var(--cf-accent);
	outline-offset: 2px;
}

.cf-tool.cf-slab .cf-waste-custom-wrap {
	grid-column: 1 / -1;
	margin-top: var(--cf-space-sm);
	display: grid;
	grid-template-columns: 1fr auto;
	gap: var(--cf-space-sm) var(--cf-space);
	align-items: center;
}

.cf-tool.cf-slab .cf-waste-custom-wrap.cf-field-hidden {
	display: none !important;
}

.cf-tool.cf-slab .cf-waste-suffix {
	font-size: 0.8125rem;
	color: var(--cf-suffix);
	font-weight: 400;
}

.cf-tool.cf-slab .cf-field-waste {
	grid-column: 1 / -1;
	grid-template-rows: auto auto auto;
}

.cf-tool.cf-slab .cf-field-waste .cf-waste-toggle {
	grid-column: 1 / -1;
	grid-row: 2;
}

.cf-tool.cf-slab .cf-waste-custom-wrap {
	grid-row: 3;
}

.cf-tool.cf-slab .cf-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;
}

/* ----- Muted text ----- */
.cf-tool.cf-slab .cf-muted {
	color: #9CA3AF;
}

/* ----- Input section ----- */
.cf-tool.cf-slab .cf-inputs {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--cf-space);
	margin-bottom: var(--cf-space-lg);
}

@media (min-width: 480px) {
	.cf-tool.cf-slab .cf-inputs {
		grid-template-columns: 1fr 1fr;
	}
}

.cf-tool.cf-slab .cf-field {
	display: grid;
	grid-template-columns: 1fr auto;
	grid-template-rows: auto auto;
	align-items: center;
	gap: var(--cf-space-sm) var(--cf-space);
}

.cf-tool.cf-slab .cf-field label {
	grid-column: 1;
	grid-row: 1;
	font-size: 0.8125rem;
	font-weight: 500;
	color: var(--cf-text-muted);
}

.cf-tool.cf-slab .cf-field input[type="number"] {
	grid-column: 1;
	grid-row: 2;
	width: 100%;
	min-width: 0;
	padding: 0.5rem 0.75rem;
	background: var(--cf-input-bg);
	border: 1px solid var(--cf-input-border);
	border-radius: var(--cf-radius);
	font-size: 1rem;
	color: var(--cf-text);
	transition: border-color var(--cf-transition), box-shadow var(--cf-transition);
}

.cf-tool.cf-slab .cf-field input[type="number"]:focus {
	outline: none;
	border-color: var(--cf-input-focus);
	box-shadow: 0 0 0 2px rgba(240, 132, 78, 0.2);
}

.cf-tool.cf-slab .cf-field .cf-unit-suffix {
	grid-column: 2;
	grid-row: 2;
	align-self: center;
	min-width: 2.5ch;
	text-align: left;
	font-size: 0.8125rem;
	color: var(--cf-suffix);
	font-weight: 400;
}

.cf-tool.cf-slab .cf-field-hidden {
	display: none !important;
}

.cf-tool.cf-slab .cf-field:not(:has(.cf-unit-suffix)):not(:has(.cf-switch)) {
	grid-template-columns: 1fr;
}

/* ----- Toggle field (switch) ----- */
.cf-tool.cf-slab .cf-field-toggle {
	grid-template-columns: 1fr auto;
	grid-template-rows: auto;
	align-items: center;
}

.cf-tool.cf-slab .cf-field-toggle label {
	grid-column: 1;
	grid-row: 1;
}

.cf-tool.cf-slab .cf-switch {
	grid-column: 2;
	grid-row: 1;
	position: relative;
	width: 44px;
	height: 24px;
	padding: 2px;
	border: none;
	border-radius: var(--cf-radius-pill);
	background: var(--cf-pill-bg);
	cursor: pointer;
	transition: background-color var(--cf-transition);
	-webkit-tap-highlight-color: transparent;
}

.cf-tool.cf-slab .cf-switch[aria-checked="true"] {
	background: var(--cf-accent);
}

.cf-tool.cf-slab .cf-switch-thumb {
	display: block;
	width: 20px;
	height: 20px;
	background: #fff;
	border-radius: 50%;
	box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
	transition: transform var(--cf-transition);
}

.cf-tool.cf-slab .cf-switch[aria-checked="true"] .cf-switch-thumb {
	transform: translateX(20px);
}

.cf-tool.cf-slab .cf-switch:focus-visible {
	outline: 2px solid var(--cf-accent);
	outline-offset: 2px;
}

/* ----- Advanced section ----- */
.cf-tool.cf-slab .cf-advanced {
	margin-bottom: var(--cf-space-lg);
}

.cf-tool.cf-slab .cf-advanced-toggle {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--cf-space);
	width: 100%;
	padding: 0.75rem 1rem;
	background: var(--cf-pill-bg);
	border: none;
	border-radius: var(--cf-radius);
	font-size: 0.875rem;
	font-weight: 500;
	color: var(--cf-text);
	cursor: pointer;
	transition: background-color var(--cf-transition);
	-webkit-tap-highlight-color: transparent;
}

.cf-tool.cf-slab .cf-advanced-toggle:hover {
	background: var(--cf-input-border);
}

.cf-tool.cf-slab .cf-advanced-toggle:focus-visible {
	outline: 2px solid var(--cf-accent);
	outline-offset: 2px;
}

.cf-tool.cf-slab .cf-advanced-toggle-status {
	flex-shrink: 0;
	font-size: 0.75rem;
	font-weight: 500;
	color: var(--cf-text-muted);
	padding: 0.2rem 0.5rem;
	margin-left: auto;
	margin-right: var(--cf-space-sm);
	background: var(--cf-input-bg);
	border-radius: var(--cf-radius-pill);
	border: 1px solid var(--cf-input-border);
}

.cf-tool.cf-slab .cf-advanced-toggle-status.cf-status-hidden {
	display: none;
}

.cf-tool.cf-slab .cf-advanced-toggle-icon {
	display: inline-block;
	width: 0;
	height: 0;
	border-left: 5px solid transparent;
	border-right: 5px solid transparent;
	border-top: 6px solid var(--cf-text-muted);
	transition: transform var(--cf-transition);
}

.cf-tool.cf-slab .cf-advanced-toggle[aria-expanded="true"] .cf-advanced-toggle-icon {
	transform: rotate(180deg);
}

.cf-tool.cf-slab .cf-advanced-panel {
	margin-top: var(--cf-space);
	padding: var(--cf-space);
	background: var(--cf-result-bg);
	border-radius: var(--cf-radius);
}

.cf-tool.cf-slab .cf-advanced-panel[hidden] {
	display: none;
}

.cf-tool.cf-slab .cf-advanced-section {
	padding: var(--cf-space);
	margin-bottom: var(--cf-space);
	background: var(--cf-input-bg);
	border: 1px solid var(--cf-input-border);
	border-radius: var(--cf-radius);
}

.cf-tool.cf-slab .cf-advanced-section:last-child {
	margin-bottom: 0;
}

.cf-tool.cf-slab .cf-advanced-section-title {
	margin: 0 0 var(--cf-space);
	font-size: 0.8125rem;
	font-weight: 600;
	color: var(--cf-text);
	text-transform: uppercase;
	letter-spacing: 0.03em;
}

.cf-tool.cf-slab .cf-thickened-edge-fields,
.cf-tool.cf-slab .cf-subbase-fields {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--cf-space);
	margin-top: var(--cf-space);
}

@media (min-width: 480px) {
	.cf-tool.cf-slab .cf-thickened-edge-fields {
		grid-template-columns: 1fr 1fr;
	}
}

/* Reinforcement: ROW 1 – slab mesh (2-column grid) */
.cf-tool.cf-slab .cf-rebar-fields {
	display: flex;
	flex-direction: column;
	gap: 0;
	margin-top: var(--cf-space);
}

.cf-tool.cf-slab .cf-rebar-mesh-row {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--cf-space);
}

@media (min-width: 480px) {
	.cf-tool.cf-slab .cf-rebar-mesh-row {
		grid-template-columns: 1fr 1fr;
	}
}

/* Field hint text */
.cf-tool.cf-slab .cf-field-hint {
	margin: calc(-1 * var(--cf-space-sm)) 0 0;
	font-size: 0.75rem;
	color: var(--cf-text-muted);
	font-style: italic;
}

/* Subsection titles within advanced sections */
.cf-tool.cf-slab .cf-subsection-title {
	margin: 0 0 var(--cf-space);
	padding-top: var(--cf-space);
	font-size: 0.75rem;
	font-weight: 600;
	color: var(--cf-text-muted);
	text-transform: uppercase;
	letter-spacing: 0.03em;
	border-top: 1px solid var(--cf-input-border);
}

.cf-tool.cf-slab .cf-subsection-title:first-child {
	padding-top: 0;
	border-top: none;
}

/* Reinforcement: ROW 2 – thickened edge bars (full-width subsection) */
.cf-tool.cf-slab .cf-edge-rebar-section {
	width: 100%;
	margin-top: var(--cf-space);
	padding-top: var(--cf-space);
	border-top: 1px solid var(--cf-input-border);
}

.cf-tool.cf-slab .cf-edge-rebar-section .cf-subsection-title {
	padding-top: 0;
	border-top: none;
}

.cf-tool.cf-slab .cf-edge-rebar-fields {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--cf-space);
	margin-top: var(--cf-space);
}

@media (min-width: 480px) {
	.cf-tool.cf-slab .cf-edge-rebar-fields {
		grid-template-columns: 1fr 1fr;
	}
}

/* Result summary lines (condensed rebar output) */
.cf-tool.cf-slab .cf-result-summary-line .cf-result-value {
	line-height: 1.4;
	word-break: break-word;
}

/* Select field styling */
.cf-tool.cf-slab .cf-field-select {
	grid-template-columns: 1fr;
}

.cf-tool.cf-slab .cf-field select {
	grid-column: 1;
	grid-row: 2;
	width: 100%;
	min-width: 0;
	padding: 0.5rem 2rem 0.5rem 0.75rem;
	background: var(--cf-input-bg);
	border: 1px solid var(--cf-input-border);
	border-radius: var(--cf-radius);
	font-size: 1rem;
	color: var(--cf-text);
	cursor: pointer;
	appearance: none;
	background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b6560' d='M2 4l4 4 4-4'/%3E%3C/svg%3E");
	background-repeat: no-repeat;
	background-position: right 0.75rem center;
	background-size: 12px;
	transition: border-color var(--cf-transition), box-shadow var(--cf-transition);
}

.cf-tool.cf-slab .cf-field select:focus {
	outline: none;
	border-color: var(--cf-input-focus);
	box-shadow: 0 0 0 2px rgba(240, 132, 78, 0.2);
}

.cf-tool.cf-slab .cf-field select:hover {
	border-color: var(--cf-text-muted);
}

/* ----- Calculate button ----- */
.cf-tool.cf-slab .cf-calculate {
	display: block;
	width: 100%;
	padding: 0.625rem 1.25rem;
	margin-bottom: var(--cf-space-lg);
	background: var(--cf-accent);
	color: var(--cf-accent-text);
	border: none;
	border-radius: var(--cf-radius);
	font-size: 1rem;
	font-weight: 600;
	cursor: pointer;
	transition: background-color var(--cf-transition), transform 0.08s ease;
	-webkit-tap-highlight-color: transparent;
}

.cf-tool.cf-slab .cf-calculate:hover {
	background: var(--cf-accent-hover);
	color: var(--cf-text);
}

.cf-tool.cf-slab .cf-calculate:active {
	background: var(--cf-accent-active);
	transform: scale(0.98);
}

.cf-tool.cf-slab .cf-calculate:focus-visible {
	outline: 2px solid var(--cf-accent);
	outline-offset: 2px;
}

@media (min-width: 480px) {
	.cf-tool.cf-slab .cf-calculate {
		width: auto;
		min-width: 10rem;
	}
}

/* ----- Results ----- */
.cf-tool.cf-slab .cf-results {
	min-height: 0;
	margin-top: 0;
}

.cf-tool.cf-slab .cf-result-summary {
	padding: var(--cf-space-lg);
	background: var(--cf-result-bg);
	border-radius: var(--cf-radius);
	border: none;
	box-shadow: none;
}

.cf-tool.cf-slab .cf-result-summary-title {
	margin: 0 0 var(--cf-space);
	font-size: 0.875rem;
	font-weight: 600;
	color: var(--cf-text-muted);
	text-transform: uppercase;
	letter-spacing: 0.04em;
}

.cf-tool.cf-slab .cf-result-hero {
	margin-bottom: var(--cf-space-lg);
}

.cf-tool.cf-slab .cf-result-hero-value {
	display: block;
	font-size: 1.5rem;
	font-weight: 600;
	color: var(--cf-text);
	line-height: 1.2;
}

/* Total concrete volume emphasis */
.cf-tool.cf-slab .cf-result-total-concrete .cf-result-hero-value {
	font-size: 1.625rem;
	font-weight: 700;
}

.cf-tool.cf-slab .cf-result-total-concrete .cf-result-meta {
	font-weight: 600;
	color: var(--cf-text-muted);
}

.cf-tool.cf-slab .cf-result-row {
	margin-bottom: var(--cf-space);
}

/* Breakdown lines (base volume, thickened edge) – secondary emphasis */
.cf-tool.cf-slab .cf-result-breakdown .cf-result-value {
	font-size: 0.9375rem;
	font-weight: 500;
}

.cf-tool.cf-slab .cf-result-bag-alt {
	color: var(--cf-text-muted);
	font-weight: 400;
	margin: 0 0.25em;
}

.cf-tool.cf-slab .cf-result-cost {
	margin-bottom: var(--cf-space);
}

.cf-tool.cf-slab .cf-result-label {
	font-size: 0.875rem;
	color: var(--cf-text-muted);
	font-weight: 500;
	margin-right: 0.35em;
}

.cf-tool.cf-slab .cf-result-value {
	font-size: 1.125rem;
	font-weight: 600;
	color: var(--cf-text);
}

.cf-tool.cf-slab .cf-result-meta {
	font-size: 0.875rem;
	color: var(--cf-text-muted);
	font-weight: 400;
}

/* Rate input inside results */
.cf-tool.cf-slab .cf-price-rate,
.cf-tool.cf-slab .cf-rate-input {
	display: inline-block;
	width: 4rem;
	padding: 0.25rem 0.4rem;
	margin: 0 0.2rem 0 0;
	background: var(--cf-input-bg);
	border: 1px solid var(--cf-input-border);
	border-radius: 6px;
	font-size: 0.9375rem;
	color: var(--cf-text);
	vertical-align: middle;
}

.cf-tool.cf-slab .cf-price-rate:focus,
.cf-tool.cf-slab .cf-rate-input:focus {
	outline: none;
	border-color: var(--cf-input-focus);
	box-shadow: 0 0 0 2px rgba(240, 132, 78, 0.15);
}

/* Disclaimer */
.cf-tool.cf-slab .cf-price-disclaimer,
.cf-tool.cf-slab .cf-disclaimer {
	margin: var(--cf-space-sm) 0 0;
	font-size: 0.75rem;
	color: var(--cf-text-muted);
	font-weight: 400;
}

/* ----- Warnings ----- */
.cf-tool.cf-slab .cf-warnings {
	margin: var(--cf-space) 0;
	padding: var(--cf-space);
	background: var(--cf-warning-bg);
	border: 1px solid var(--cf-warning-border);
	border-radius: var(--cf-radius);
}

.cf-tool.cf-slab .cf-soft-warning {
	margin: 0 0 var(--cf-space-sm);
	font-size: 0.8125rem;
	color: var(--cf-warning-text);
	font-style: italic;
}

.cf-tool.cf-slab .cf-soft-warning:last-child {
	margin-bottom: 0;
}

/* ----- Materials summary section ----- */
.cf-tool.cf-slab .cf-result-materials {
	margin-top: var(--cf-space-lg);
	padding-top: var(--cf-space);
	border-top: 1px solid var(--cf-input-border);
}

.cf-tool.cf-slab .cf-result-materials .cf-result-row {
	margin-bottom: var(--cf-space-sm);
}

.cf-tool.cf-slab .cf-result-materials .cf-result-row:last-child {
	margin-bottom: 0;
}

.cf-tool.cf-slab .cf-result-materials-title {
	margin: 0 0 var(--cf-space-sm);
	font-size: 0.8125rem;
	font-weight: 600;
	color: var(--cf-text-muted);
	text-transform: uppercase;
	letter-spacing: 0.03em;
}

/* Copy button */
.cf-tool.cf-slab .cf-result-actions {
	display: flex;
	justify-content: flex-end;
	margin-top: var(--cf-space-lg);
	padding-top: var(--cf-space);
	border-top: none;
}

.cf-tool.cf-slab .cf-copy {
	padding: 0.35rem 0.75rem;
	background: transparent;
	color: var(--cf-text-muted);
	border: 1px solid var(--cf-input-border);
	border-radius: var(--cf-radius);
	font-size: 0.875rem;
	font-weight: 500;
	cursor: pointer;
	transition: color var(--cf-transition), border-color var(--cf-transition);
}

.cf-tool.cf-slab .cf-copy:hover {
	color: var(--cf-text);
	border-color: var(--cf-text-muted);
}

.cf-tool.cf-slab .cf-copy:focus-visible {
	outline: 2px solid var(--cf-accent);
	outline-offset: 2px;
}

/* ----- Errors ----- */
.cf-tool.cf-slab .cf-errors {
	margin-top: var(--cf-space);
	padding: var(--cf-space);
	background: var(--cf-error-bg);
	border: 1px solid var(--cf-error-border);
	border-radius: var(--cf-radius);
	font-size: 0.9375rem;
	color: var(--cf-error-text);
}

.cf-tool.cf-slab .cf-errors.cf-errors-is-hidden {
	display: none;
}

.cf-tool.cf-slab .cf-errors ul {
	margin: 0;
	padding-left: 1.25rem;
}

.cf-tool.cf-slab .cf-errors li {
	margin-bottom: 0.25rem;
}

.cf-tool.cf-slab .cf-errors li:last-child {
	margin-bottom: 0;
}