/*
 * Savings vs Investing Calculator styles.
 * Clean white layout, blue accents, rounded cards, subtle shadows.
 */

.svic {
	--svic-blue-900: #0b3d91;
	--svic-blue-700: #1a56db;
	--svic-blue-600: #2563eb;
	--svic-blue-100: #e8f0fe;
	--svic-blue-50: #f4f8ff;
	--svic-green-700: #0f9d58;
	--svic-green-100: #e6f7ee;
	--svic-gray-900: #111827;
	--svic-gray-700: #374151;
	--svic-gray-500: #6b7280;
	--svic-gray-200: #e5e7eb;
	--svic-gray-100: #f3f4f6;
	--svic-white: #ffffff;
	--svic-radius-lg: 16px;
	--svic-radius-md: 10px;
	--svic-shadow: 0 1px 2px rgba(16, 24, 40, 0.06), 0 4px 12px rgba(16, 24, 40, 0.06);
	--svic-max-width: 860px;

	max-width: var( --svic-max-width );
	margin: 0 auto;
	padding: 32px 20px 64px;
	color: var( --svic-gray-900 );
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
	line-height: 1.55;
	background: var( --svic-white );
}

.svic *,
.svic *::before,
.svic *::after {
	box-sizing: border-box;
}

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

/* Hero */

.svic__hero {
	text-align: center;
	margin-bottom: 28px;
}

.svic__title {
	font-size: clamp( 1.75rem, 1.4rem + 1.4vw, 2.5rem );
	font-weight: 800;
	color: var( --svic-gray-900 );
	margin: 0 0 12px;
	letter-spacing: -0.01em;
}

.svic__subtitle {
	font-size: 1.05rem;
	color: var( --svic-gray-700 );
	max-width: 640px;
	margin: 0 auto;
}

/* Cards */

.svic__card {
	background: var( --svic-white );
	border: 1px solid var( --svic-gray-200 );
	border-radius: var( --svic-radius-lg );
	box-shadow: var( --svic-shadow );
	padding: 28px;
	margin-bottom: 24px;
}

/* Calculator form */

.svic__field {
	margin-bottom: 24px;
}

.svic__field-group {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 20px;
}

.svic__field label {
	display: block;
	font-weight: 600;
	font-size: 0.925rem;
	color: var( --svic-gray-900 );
	margin-bottom: 8px;
}

.svic__field input[type="number"],
.svic__field input[type="date"],
.svic__field select {
	width: 100%;
	font-size: 1rem;
	padding: 12px 14px;
	border: 1.5px solid var( --svic-gray-200 );
	border-radius: var( --svic-radius-md );
	background: var( --svic-white );
	color: var( --svic-gray-900 );
	transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.svic__field select {
	appearance: none;
	-webkit-appearance: none;
	-moz-appearance: none;
	height: 52px;
	padding: 0 40px 0 14px;
	line-height: 49px;
	cursor: pointer;
	background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='4 6 8 10 12 6'%3E%3C/polyline%3E%3C/svg%3E");
	background-repeat: no-repeat;
	background-position: right 14px center;
	background-size: 16px;
}

.svic__field select:hover {
	border-color: var( --svic-gray-500 );
}

.svic__field input:focus-visible,
.svic__field select:focus-visible {
	outline: none;
	border-color: var( --svic-blue-600 );
	box-shadow: 0 0 0 3px var( --svic-blue-100 );
}

.svic__field input:invalid {
	border-color: #dc2626;
}

.svic__input-prefix,
.svic__input-suffix {
	position: relative;
	display: flex;
	align-items: center;
}

.svic__input-prefix span,
.svic__input-suffix span {
	position: absolute;
	color: var( --svic-gray-500 );
	font-weight: 600;
	pointer-events: none;
}

.svic__input-prefix span {
	left: 14px;
}

.svic__input-prefix input {
	padding-left: 28px;
}

.svic__input-suffix span {
	right: 14px;
}

.svic__input-suffix input {
	padding-right: 32px;
}

.svic__date-display {
	margin: 8px 0 0;
	font-size: 0.875rem;
	color: var( --svic-gray-500 );
	font-weight: 500;
}

.svic__error {
	margin: 8px 0 0;
	font-size: 0.875rem;
	color: #dc2626;
	font-weight: 600;
	min-height: 1.2em;
}

.svic__button {
	appearance: none;
	width: 100%;
	background: var( --svic-blue-600 );
	color: var( --svic-white );
	font-size: 1.05rem;
	font-weight: 700;
	border: none;
	border-radius: var( --svic-radius-md );
	padding: 14px 20px;
	cursor: pointer;
	transition: background 0.15s ease, transform 0.05s ease;
}

.svic__button:hover:not(:disabled) {
	background: var( --svic-blue-700 );
}

.svic__button:active:not(:disabled) {
	transform: translateY( 1px );
}

.svic__button:disabled {
	background: var( --svic-gray-200 );
	color: var( --svic-gray-500 );
	cursor: not-allowed;
}

.svic__button:focus-visible {
	outline: 3px solid var( --svic-blue-100 );
	outline-offset: 2px;
}

.svic__loading {
	text-align: center;
	color: var( --svic-blue-700 );
	font-weight: 600;
	padding: 16px;
}

/* Results */

.svic__result-cards {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 20px;
	margin-bottom: 0;
}

.svic__result-card {
	margin-bottom: 0;
	border-top: 4px solid var( --svic-blue-600 );
}

.svic__result-card--sp500 {
	border-top-color: var( --svic-green-700 );
}

.svic__result-card h3 {
	margin: 0 0 8px;
	font-size: 1.05rem;
	color: var( --svic-gray-700 );
}

.svic__result-value {
	font-size: 2rem;
	font-weight: 800;
	color: var( --svic-gray-900 );
	margin: 0 0 16px;
}

.svic__result-list {
	margin: 0;
}

.svic__result-list > div {
	display: flex;
	justify-content: space-between;
	padding: 8px 0;
	border-top: 1px solid var( --svic-gray-100 );
	font-size: 0.9rem;
}

.svic__result-list dt {
	color: var( --svic-gray-500 );
}

.svic__result-list dd {
	margin: 0;
	font-weight: 700;
	color: var( --svic-gray-900 );
}

/* Comparison */

.svic__comparison h2,
.svic__chart-card h2 {
	margin: 0 0 20px;
	font-size: 1.4rem;
}

.svic__comparison-grid {
	display: grid;
	grid-template-columns: repeat( 2, 1fr );
	gap: 16px;
	margin-bottom: 20px;
}

.svic__comparison-grid > div {
	background: var( --svic-blue-50 );
	border-radius: var( --svic-radius-md );
	padding: 16px;
}

.svic__comparison-label {
	display: block;
	font-size: 0.85rem;
	color: var( --svic-gray-500 );
	font-weight: 600;
	margin-bottom: 6px;
}

.svic__comparison-value {
	display: block;
	font-size: 1.35rem;
	font-weight: 800;
	color: var( --svic-gray-900 );
}

.svic__comparison-value.svic--positive {
	color: var( --svic-green-700 );
}

.svic__comparison-value.svic--neutral {
	color: var( --svic-blue-700 );
}

.svic__summary {
	background: var( --svic-gray-100 );
	border-radius: var( --svic-radius-md );
	padding: 18px;
	font-size: 1rem;
	color: var( --svic-gray-900 );
	margin: 0;
}

/* Chart */

.svic__chart-wrapper {
	position: relative;
	width: 100%;
	height: 340px;
}

/* SEO content */

.svic__seo-content {
	margin-top: 12px;
}

.svic__seo-section {
	margin-bottom: 28px;
	border-bottom: 1px solid var( --svic-gray-100 );
	padding-bottom: 20px;
}

.svic__seo-header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 16px;
}

.svic__seo-section h2 {
	font-size: 1.2rem;
	color: var( --svic-gray-900 );
	margin: 0;
}

.svic__seo-toggle {
	flex-shrink: 0;
	display: inline-flex;
	align-items: center;
	gap: 4px;
	background: none;
	color: var( --svic-blue-600 );
	border: none;
	font-size: 0.9rem;
	font-weight: 700;
	padding: 4px 2px;
	cursor: pointer;
}

.svic__seo-toggle::after {
	content: "+";
	font-size: 1.1rem;
	line-height: 1;
}

.svic__seo-toggle[aria-expanded="true"]::after {
	content: "\2212";
}

.svic__seo-toggle:hover {
	color: var( --svic-blue-700 );
	text-decoration: underline;
}

.svic__seo-toggle:focus-visible {
	outline: 2px solid var( --svic-blue-600 );
	outline-offset: 2px;
	border-radius: 4px;
}

.svic__seo-body {
	margin-top: 12px;
}

.svic__seo-body p {
	color: var( --svic-gray-700 );
	margin: 0;
}

/* FAQ */

.svic__faq {
	border-top: 1px solid var( --svic-gray-200 );
	padding-top: 28px;
	margin-top: 8px;
}

.svic__faq h2 {
	font-size: 1.4rem;
	margin: 0 0 16px;
}

.svic__faq-item {
	border-bottom: 1px solid var( --svic-gray-200 );
}

.svic__faq-question {
	margin: 0;
}

.svic__faq-toggle {
	width: 100%;
	text-align: left;
	background: none;
	border: none;
	font-size: 1rem;
	font-weight: 700;
	color: var( --svic-gray-900 );
	padding: 16px 28px 16px 0;
	position: relative;
	cursor: pointer;
}

.svic__faq-toggle::after {
	content: "+";
	position: absolute;
	right: 0;
	top: 50%;
	transform: translateY( -50% );
	font-size: 1.4rem;
	color: var( --svic-blue-600 );
}

.svic__faq-toggle[aria-expanded="true"]::after {
	content: "\2212";
}

.svic__faq-toggle:focus-visible {
	outline: 2px solid var( --svic-blue-600 );
	outline-offset: 2px;
}

.svic__faq-answer {
	padding: 0 0 16px;
	color: var( --svic-gray-700 );
}

.svic__faq-answer p {
	margin: 0;
}

/* Disclaimer */

.svic__disclaimer {
	margin-top: 32px;
	font-size: 0.8rem;
	color: var( --svic-gray-500 );
	text-align: center;
}

/* Responsive */

@media ( max-width: 640px ) {
	.svic {
		padding: 20px 16px 48px;
	}

	.svic__card {
		padding: 20px;
	}

	.svic__field-group,
	.svic__result-cards,
	.svic__comparison-grid {
		grid-template-columns: 1fr;
	}

	.svic__chart-wrapper {
		height: 280px;
	}
}

/* Reduced motion */

@media ( prefers-reduced-motion: reduce ) {
	.svic__button {
		transition: none;
	}
}

/* Copy Link button: small, secondary/outlined icon button in the top-right
   corner of the comparison card -- deliberately NOT styled like the primary
   Calculate button, since it's a secondary action that only appears once
   results already exist. */
.svic__comparison {
	position: relative;
}
.svic__copy-link-btn {
	position: absolute;
	top: 20px;
	right: 20px;
	display: inline-flex;
	align-items: center;
	gap: 6px;
	padding: 6px 12px;
	background: transparent;
	border: 1px solid var( --svic-gray-300, #d1d5db );
	border-radius: 999px;
	color: var( --svic-blue-700, #1a56db );
	font-size: 0.8125rem;
	font-weight: 600;
	cursor: pointer;
	line-height: 1;
	transition: background-color 0.15s ease, border-color 0.15s ease;
}
.svic__copy-link-btn:hover {
	background: var( --svic-blue-50, #eff6ff );
	border-color: var( --svic-blue-700, #1a56db );
}
.svic__copy-link-btn svg {
	flex-shrink: 0;
}
@media ( max-width: 640px ) {
	.svic__copy-link-btn {
		position: static;
		margin-bottom: 16px;
	}
}

/* Download Chart / Download Data buttons: small, secondary icon buttons
   in the top-right corner of the chart card, matching the Copy Link
   button's visual language (outlined pill, not the primary Calculate style). */
.svic__chart-header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	flex-wrap: wrap;
	gap: 12px;
	margin-bottom: 0;
}
.svic__chart-header h2 {
	margin: 0;
}
.svic__chart-actions {
	display: flex;
	gap: 8px;
	flex-shrink: 0;
}
.svic__icon-btn {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	padding: 6px 12px;
	background: transparent;
	border: 1px solid var( --svic-gray-300, #d1d5db );
	border-radius: 999px;
	color: var( --svic-blue-700, #1a56db );
	font-size: 0.8125rem;
	font-weight: 600;
	cursor: pointer;
	line-height: 1;
	transition: background-color 0.15s ease, border-color 0.15s ease;
}
.svic__icon-btn:hover {
	background: var( --svic-blue-50, #eff6ff );
	border-color: var( --svic-blue-700, #1a56db );
}
.svic__icon-btn svg {
	flex-shrink: 0;
}
@media ( max-width: 640px ) {
	.svic__chart-header {
		flex-direction: column;
		align-items: flex-start;
	}
	.svic__icon-btn-label {
		display: none;
	}
	.svic__icon-btn {
		padding: 8px;
	}
}