/**
 * assets/css/calculators.css
 *
 * Shared styling for calculator UIs:
 * - Responsive grid for forms + results
 * - Mobile keypad styling
 * - Buttons, badges, cards
 * - Chart containers
 * - Advanced section accordions
 * - Dashboard / scenarios / toasts
 * - Print styles
 */

/* -------------------------------------------------------------
   1. CSS variables / base tokens
------------------------------------------------------------- */

:root {
	/* Colours */
	--calc-color-bg: #ffffff;
	--calc-color-bg-alt: #f6f7f9;
	--calc-color-surface: #ffffff;
	--calc-color-border: #d0d7e2;
	--calc-color-border-soft: #e2e6f0;
	--calc-color-text: #1f2933;
	--calc-color-text-muted: #6b7280;
	--calc-color-accent: #2563eb;
	--calc-color-accent-soft: rgba(37, 99, 235, 0.08);
	--calc-color-accent-strong: #1d4ed8;
	--calc-color-danger: #dc2626;
	--calc-color-success: #16a34a;
	--calc-color-warning: #f59e0b;
	--calc-color-toast-bg: #111827;
	--calc-color-toast-text: #f9fafb;

	/* Radii / shadows */
	--calc-radius-sm: 4px;
	--calc-radius-md: 8px;
	--calc-radius-lg: 12px;
	--calc-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
	--calc-shadow-md: 0 10px 30px rgba(15, 23, 42, 0.12);

	/* Spacing / sizing */
	--calc-spacing-xs: 0.25rem;
	--calc-spacing-sm: 0.5rem;
	--calc-spacing-md: 1rem;
	--calc-spacing-lg: 1.5rem;
	--calc-spacing-xl: 2rem;

	--calc-font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
	--calc-font-size-sm: 0.875rem;
	--calc-font-size-md: 1rem;
	--calc-font-size-lg: 1.125rem;

	--calc-transition-fast: 150ms ease-out;
	--calc-transition-med: 200ms ease;
}

/* -------------------------------------------------------------
   2. Generic layout / wrappers
------------------------------------------------------------- */

/* Generic calculator wrapper */
.calculator,
[data-btlt-calculator],
[data-probate-calculator],
[data-vat-calculator] {
	font-family: var(--calc-font-family);
	background-color: var(--calc-color-bg);
	border-radius: var(--calc-radius-lg);
	box-shadow: var(--calc-shadow-md);
	border: 1px solid var(--calc-color-border-soft);
	padding: var(--calc-spacing-lg);
	color: var(--calc-color-text);
}

/* Top-level grid for forms + results */
.calculator-grid {
	display: grid;
	grid-template-columns: minmax(0, 1fr);
	grid-gap: var(--calc-spacing-lg);
	align-items: flex-start;
}

/* Two-column layout on larger screens */
@media (min-width: 768px) {
	.calculator-grid {
		grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
	}
}

/* Sections */
.calculator-form {
	display: grid;
	grid-template-columns: minmax(0, 1fr);
	grid-row-gap: var(--calc-spacing-md);
	grid-column-gap: var(--calc-spacing-md);
}

@media (min-width: 640px) {
	.calculator-form--two-col {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
}

.calculator-results {
	display: flex;
	flex-direction: column;
	gap: var(--calc-spacing-md);
}

/* Section headings */
.calculator-section-title {
	font-size: var(--calc-font-size-lg);
	font-weight: 600;
	margin-bottom: var(--calc-spacing-sm);
}

/* Form field */
.calculator-field {
	display: flex;
	flex-direction: column;
	gap: var(--calc-spacing-xs);
}

.calculator-field__label {
	font-size: var(--calc-font-size-sm);
	font-weight: 500;
	color: var(--calc-color-text);
	display: flex;
	align-items: center;
	justify-content: space-between;
}

.calculator-field__hint {
	font-size: var(--calc-font-size-sm);
	color: var(--calc-color-text-muted);
}

.calculator-field__input-wrapper {
	display: flex;
	align-items: stretch;
	gap: var(--calc-spacing-xs);
}

/* Inputs */
.calculator-input,
.calculator-select {
	width: 100%;
	font: inherit;
	padding: 0.5rem 0.75rem;
	border-radius: var(--calc-radius-md);
	border: 1px solid var(--calc-color-border);
	background-color: #ffffff;
	color: var(--calc-color-text);
	transition: border-color var(--calc-transition-fast), box-shadow var(--calc-transition-fast), background-color var(--calc-transition-fast);
}

.calculator-input:focus,
.calculator-select:focus {
	outline: none;
	border-color: var(--calc-color-accent);
	box-shadow: 0 0 0 1px var(--calc-color-accent-soft);
}

/* Range sliders aligned under input */
.calculator-slider {
	width: 100%;
}

/* -------------------------------------------------------------
   3. Buttons, badges, cards
------------------------------------------------------------- */

.calc-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 0.35rem;
	padding: 0.5rem 0.9rem;
	border-radius: var(--calc-radius-md);
	border: 1px solid transparent;
	background-color: #f3f4f6;
	color: var(--calc-color-text);
	font-family: var(--calc-font-family);
	font-size: var(--calc-font-size-sm);
	font-weight: 500;
	line-height: 1.2;
	cursor: pointer;
	transition:
		background-color var(--calc-transition-fast),
		border-color var(--calc-transition-fast),
		color var(--calc-transition-fast),
		box-shadow var(--calc-transition-fast),
		transform var(--calc-transition-fast);
}

.calc-btn--primary {
	background-color: var(--calc-color-accent);
	border-color: var(--calc-color-accent);
	color: #ffffff;
}

.calc-btn--primary:hover {
	background-color: var(--calc-color-accent-strong);
	border-color: var(--calc-color-accent-strong);
	box-shadow: var(--calc-shadow-sm);
}

.calc-btn--secondary {
	background-color: #ffffff;
	border-color: var(--calc-color-border);
	color: var(--calc-color-text);
}

.calc-btn--secondary:hover {
	border-color: var(--calc-color-accent);
	background-color: var(--calc-color-accent-soft);
}

.calc-btn--ghost {
	background-color: transparent;
	border-color: transparent;
	color: var(--calc-color-text-muted);
}

.calc-btn--ghost:hover {
	background-color: #f3f4f6;
	border-color: var(--calc-color-border-soft);
}

.calc-btn--small {
	padding: 0.35rem 0.65rem;
	font-size: 0.75rem;
}

.calc-btn:disabled,
.calc-btn[aria-disabled="true"] {
	opacity: 0.5;
	cursor: default;
	box-shadow: none;
	transform: none;
}

/* Badges */
.calc-badge {
	display: inline-flex;
	align-items: center;
	padding: 0.15rem 0.45rem;
	border-radius: 999px;
	font-size: 0.7rem;
	font-weight: 500;
	text-transform: uppercase;
	letter-spacing: 0.04em;
	border: 1px solid transparent;
}

.calc-badge--accent {
	background-color: var(--calc-color-accent-soft);
	color: var(--calc-color-accent-strong);
	border-color: transparent;
}

.calc-badge--success {
	background-color: rgba(22, 163, 74, 0.08);
	color: var(--calc-color-success);
}

.calc-badge--warning {
	background-color: rgba(245, 158, 11, 0.08);
	color: var(--calc-color-warning);
}

.calc-badge--danger {
	background-color: rgba(220, 38, 38, 0.08);
	color: var(--calc-color-danger);
}

/* Cards */
.calc-card {
	background-color: var(--calc-color-surface);
	border-radius: var(--calc-radius-lg);
	border: 1px solid var(--calc-color-border-soft);
	box-shadow: var(--calc-shadow-sm);
	padding: var(--calc-spacing-md);
}

.calc-card--subtle {
	box-shadow: none;
	background-color: var(--calc-color-bg-alt);
}

.calc-card--highlight {
	border-color: var(--calc-color-accent);
	box-shadow: 0 0 0 1px var(--calc-color-accent-soft), var(--calc-shadow-sm);
}

/* -------------------------------------------------------------
   4. Toasts / snackbars
------------------------------------------------------------- */

.calc-toast-container {
	position: fixed;
	bottom: 1.25rem;
	right: 1.25rem;
	z-index: 9999;
	display: flex;
	flex-direction: column;
	gap: 0.5rem;
	max-width: min(320px, 100vw - 2rem);
	pointer-events: none;
}

@media (max-width: 640px) {
	.calc-toast-container {
		left: 50%;
		right: auto;
		transform: translateX(-50%);
		align-items: center;
	}
}

.calc-toast {
	pointer-events: all;
	background-color: var(--calc-color-toast-bg);
	color: var(--calc-color-toast-text);
	border-radius: var(--calc-radius-md);
	padding: 0.6rem 0.8rem;
	font-size: 0.875rem;
	box-shadow: var(--calc-shadow-md);
	opacity: 0;
	transform: translateY(8px);
	transition:
		opacity var(--calc-transition-med),
		transform var(--calc-transition-med);
}

.calc-toast--visible {
	opacity: 1;
	transform: translateY(0);
}

.calc-toast--success {
	background-color: #065f46;
}

.calc-toast--error {
	background-color: #991b1b;
}

.calc-toast--info {
	background-color: var(--calc-color-toast-bg);
}

/* -------------------------------------------------------------
   5. Advanced sections / accordions
------------------------------------------------------------- */

/* Advanced toggle button suggested class */
.calculator-advanced-toggle {
	display: inline-flex;
	align-items: center;
	gap: 0.4rem;
	font-size: var(--calc-font-size-sm);
	cursor: pointer;
	color: var(--calc-color-accent-strong);
	border: none;
	background: none;
	padding: 0;
}

.calculator-advanced-toggle::after {
	content: "▾";
	font-size: 0.75rem;
	transform-origin: center;
	transition: transform var(--calc-transition-fast);
}

/* When parent has a marker class (e.g. .btlt-advanced-open), rotate the caret */
.btlt-advanced-open .calculator-advanced-toggle::after {
	transform: rotate(180deg);
}

/* Advanced content sections */
[data-btlt-advanced-section],
[data-probate-complexity-section] {
	margin-top: var(--calc-spacing-md);
	padding-top: var(--calc-spacing-md);
	border-top: 1px dashed var(--calc-color-border-soft);
}

/* Use [hidden] attribute for toggling via JS */
[data-btlt-advanced-section][hidden],
[data-probate-complexity-section][hidden] {
	display: none !important;
}

/* -------------------------------------------------------------
   6. Loading states
------------------------------------------------------------- */

[data-btlt-calculator].btlt-calculator--loading,
[data-probate-calculator].probate-calculator--loading {
	position: relative;
}

[data-btlt-calculator].btlt-calculator--loading::after,
[data-probate-calculator].probate-calculator--loading::after {
	content: "Calculating…";
	position: absolute;
	inset: 0;
	background-color: rgba(255, 255, 255, 0.7);
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: var(--calc-font-size-sm);
	color: var(--calc-color-text-muted);
	backdrop-filter: blur(2px);
	border-radius: inherit;
	z-index: 10;
}

/* -------------------------------------------------------------
   7. Chart containers
------------------------------------------------------------- */

.calculator-chart,
[data-btlt-chart],
[data-vat-chart] {
	position: relative;
	width: 100%;
	min-height: 220px;
	background-color: var(--calc-color-bg-alt);
	border-radius: var(--calc-radius-md);
	border: 1px solid var(--calc-color-border-soft);
	padding: var(--calc-spacing-sm);
	box-sizing: border-box;
}

.calculator-chart canvas,
[data-btlt-chart] canvas,
[data-vat-chart] canvas {
	width: 100% !important;
	height: 100% !important;
}

/* Smaller chart variant if needed */
.calculator-chart--small {
	min-height: 160px;
}

/* -------------------------------------------------------------
   8. VAT calculator specific (keypad + split bar)
------------------------------------------------------------- */

/* Mode highlighting */
[data-vat-calculator].vat-mode-add .calculator-section-title::after {
	content: " · Add VAT";
	color: var(--calc-color-text-muted);
	font-weight: 400;
	font-size: 0.85em;
}

[data-vat-calculator].vat-mode-remove .calculator-section-title::after {
	content: " · Remove VAT";
	color: var(--calc-color-text-muted);
	font-weight: 400;
	font-size: 0.85em;
}

/* VAT keypad */
[data-vat-keypad] {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: var(--calc-spacing-sm);
	margin-top: var(--calc-spacing-md);
}

[data-vat-keypad] [data-vat-key] {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	padding: 0.7rem 0;
	font-size: var(--calc-font-size-md);
	border-radius: var(--calc-radius-md);
	border: 1px solid var(--calc-color-border-soft);
	background-color: #f9fafb;
	color: var(--calc-color-text);
	cursor: pointer;
	transition:
		background-color var(--calc-transition-fast),
		border-color var(--calc-transition-fast),
		transform var(--calc-transition-fast);
}

[data-vat-keypad] [data-vat-key]:active {
	transform: translateY(1px);
	background-color: #e5e7eb;
}

/* Make last row keys span extra width for 0 and clear if needed */
[data-vat-keypad] [data-vat-key="0"] {
	grid-column: span 2;
}

/* VAT split bar (non-Chart.js variant used in vat-calculator.js) */
.vat-split {
	display: flex;
	width: 100%;
	height: 10px;
	border-radius: 999px;
	overflow: hidden;
	background-color: #e5e7eb;
	margin-top: var(--calc-spacing-sm);
}

.vat-split__net,
.vat-split__vat {
	height: 100%;
	transition: width var(--calc-transition-med);
}

.vat-split__net {
	background: linear-gradient(90deg, #d1fae5, #6ee7b7);
}

.vat-split__vat {
	background: linear-gradient(90deg, #fee2e2, #f97373);
}

/* -------------------------------------------------------------
   9. Buy-to-let / scenarios UI
------------------------------------------------------------- */

.btlt-scenarios-empty,
.btlt-compare-empty {
	font-size: var(--calc-font-size-sm);
	color: var(--calc-color-text-muted);
	padding: var(--calc-spacing-sm) 0;
}

.btlt-scenario-row {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 0.5rem 0;
	border-bottom: 1px solid var(--calc-color-border-soft);
	gap: var(--calc-spacing-md);
}

.btlt-scenario-row:last-child {
	border-bottom: none;
}

.btlt-scenario-row--active {
	background-color: var(--calc-color-accent-soft);
	border-radius: var(--calc-radius-md);
	padding-inline: 0.5rem;
}

.btlt-scenario-name {
	font-weight: 500;
	font-size: var(--calc-font-size-sm);
}

.btlt-scenario-controls {
	display: flex;
	align-items: center;
	gap: 0.4rem;
}

.btlt-scenario-load,
.btlt-scenario-delete {
	@supports (all: unset) {
		all: unset;
	}
	/* fallback for browsers without all: unset; */
	padding: 0.25rem 0.5rem;
	border-radius: var(--calc-radius-sm);
	font-size: 0.75rem;
	cursor: pointer;
}

.btlt-scenario-load {
	color: var(--calc-color-accent-strong);
}

.btlt-scenario-delete {
	color: var(--calc-color-danger);
}

.btlt-scenario-compare-label {
	display: inline-flex;
	align-items: center;
	gap: 0.25rem;
	font-size: 0.75rem;
	color: var(--calc-color-text-muted);
}

.btlt-compare-table {
	width: 100%;
	border-collapse: collapse;
	font-size: var(--calc-font-size-sm);
	margin-top: var(--calc-spacing-sm);
}

.btlt-compare-table th,
.btlt-compare-table td {
	padding: 0.35rem 0.5rem;
	border-bottom: 1px solid var(--calc-color-border-soft);
}

.btlt-compare-table th {
	text-align: left;
	font-weight: 600;
	background-color: var(--calc-color-bg-alt);
}

/* -------------------------------------------------------------
   10. Probate calculator specifics
------------------------------------------------------------- */

[data-probate-calculator].probate--complex {
	border-color: var(--calc-color-accent);
}

.probate-result-card--recommended {
	border-color: var(--calc-color-accent);
	box-shadow: 0 0 0 1px var(--calc-color-accent-soft), var(--calc-shadow-sm);
}

/* -------------------------------------------------------------
   11. Dashboard styles
------------------------------------------------------------- */

[data-dashboard] {
	font-family: var(--calc-font-family);
}

.dashboard-empty {
	font-size: var(--calc-font-size-sm);
	color: var(--calc-color-text-muted);
	padding: var(--calc-spacing-sm) 0;
}

.dashboard-scenario-row {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 0.5rem 0.75rem;
	border-bottom: 1px solid var(--calc-color-border-soft);
	gap: var(--calc-spacing-md);
}

.dashboard-scenario-row--active {
	background-color: var(--calc-color-accent-soft);
	border-radius: var(--calc-radius-md);
}

.dashboard-scenario-star {
	all: unset;
	cursor: pointer;
	font-size: 1.1rem;
	line-height: 1;
	color: #facc15;
}

.dashboard-scenario-main {
	flex: 1 1 auto;
	display: flex;
	flex-direction: column;
	gap: 0.15rem;
	min-width: 0;
}

.dashboard-scenario-title {
	font-weight: 500;
	font-size: var(--calc-font-size-sm);
	white-space: nowrap;
	text-overflow: ellipsis;
	overflow: hidden;
}

.dashboard-scenario-meta {
	font-size: 0.75rem;
	color: var(--calc-color-text-muted);
	white-space: nowrap;
	text-overflow: ellipsis;
	overflow: hidden;
}

.dashboard-scenario-actions {
	display: flex;
	align-items: center;
	gap: 0.5rem;
}

.dashboard-scenario-open {
	all: unset;
	cursor: pointer;
	font-size: 0.75rem;
	color: var(--calc-color-accent-strong);
	padding: 0.25rem 0.45rem;
	border-radius: var(--calc-radius-sm);
}

.dashboard-scenario-open:hover {
	background-color: var(--calc-color-accent-soft);
}

.dashboard-scenario-compare {
	display: inline-flex;
	align-items: center;
	gap: 0.25rem;
	font-size: 0.75rem;
	color: var(--calc-color-text-muted);
}

.dashboard-compare-empty {
	font-size: var(--calc-font-size-sm);
	color: var(--calc-color-text-muted);
	padding: var(--calc-spacing-sm) 0;
}

.dashboard-compare-table {
	width: 100%;
	border-collapse: collapse;
	font-size: var(--calc-font-size-sm);
	margin-top: var(--calc-spacing-sm);
}

.dashboard-compare-table th,
.dashboard-compare-table td {
	padding: 0.35rem 0.5rem;
	border-bottom: 1px solid var(--calc-color-border-soft);
}

.dashboard-compare-table th {
	text-align: left;
	font-weight: 600;
	background-color: var(--calc-color-bg-alt);
}

/* -------------------------------------------------------------
   12. Utility classes
------------------------------------------------------------- */

.calc-stack-sm {
	display: flex;
	flex-direction: column;
	gap: var(--calc-spacing-sm);
}

.calc-stack-md {
	display: flex;
	flex-direction: column;
	gap: var(--calc-spacing-md);
}

.calc-row {
	display: flex;
	align-items: center;
	gap: var(--calc-spacing-sm);
}

/* Hide in print */
.no-print {
	/* opt-in class, theme can add as needed */
}

/* Show only in print */
.print-only {
	display: none;
}

/* -------------------------------------------------------------
   13. Print styles
------------------------------------------------------------- */

@media print {
	/* Simplify background & layout */
	body {
		background: #ffffff !important;
	}

	.calculator,
	[data-btlt-calculator],
	[data-probate-calculator],
	[data-vat-calculator],
	[data-dashboard] {
		box-shadow: none !important;
		border: 1px solid #00000022 !important;
		page-break-inside: avoid;
	}

	/* Hide nonessential UI */
	.calc-btn,
	[data-vat-keypad],
	.calc-toast-container,
	.btlt-scenario-controls,
	.dashboard-scenario-actions,
	.calculator-advanced-toggle {
		display: none !important;
	}

	/* Force charts to print clearly */
	.calculator-chart,
	[data-btlt-chart],
	[data-vat-chart] {
		background: #ffffff !important;
		border-color: #00000022;
	}

	/* Generic print toggles */
	.no-print {
		display: none !important;
	}

	.print-only {
		display: block !important;
	}
}