.arc-calc-root {
	--arc-bg: #0f172a;
	--arc-surface: #111827;
	--arc-surface-elevated: #1e293b;
	--arc-border: #334155;
	--arc-border-strong: #475569;
	--arc-text: #f8fafc;
	--arc-text-muted: #94a3b8;
	--arc-accent: #22d3ee;
	--arc-accent-strong: #06b6d4;
	--arc-accent-glow: rgba(34, 211, 238, 0.18);
	--arc-success: #34d399;
	--arc-danger: #f87171;
	--arc-radius: 14px;
	--arc-radius-sm: 10px;
	--arc-shadow: 0 24px 48px rgba(2, 6, 23, 0.45);
	--arc-font: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
	box-sizing: border-box;
	font-family: var(--arc-font);
	color: var(--arc-text);
	line-height: 1.5;
}

.arc-calc-root *,
.arc-calc-root *::before,
.arc-calc-root *::after {
	box-sizing: border-box;
}

.arc-calc-shell {
	max-width: 920px;
	margin: 0 auto;
	padding: 32px;
	background: linear-gradient(160deg, var(--arc-surface) 0%, var(--arc-bg) 100%);
	border: 1px solid var(--arc-border);
	border-radius: calc(var(--arc-radius) + 4px);
	box-shadow: var(--arc-shadow);
}

.arc-calc-header {
	margin-bottom: 28px;
}

.arc-calc-eyebrow {
	margin: 0 0 8px;
	font-size: 0.75rem;
	font-weight: 700;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: var(--arc-accent);
}

.arc-calc-title {
	margin: 0 0 10px;
	font-size: clamp(1.5rem, 2.4vw, 2rem);
	font-weight: 700;
	line-height: 1.15;
	color: var(--arc-text);
}

.arc-calc-subtitle {
	margin: 0;
	max-width: 62ch;
	font-size: 0.975rem;
	color: var(--arc-text-muted);
}

.arc-calc-controls {
	display: grid;
	gap: 22px;
	margin-bottom: 24px;
}

.arc-calc-field {
	display: grid;
	gap: 10px;
}

.arc-calc-field--department {
	margin-bottom: 4px;
}

.arc-calc-label {
	font-size: 0.8125rem;
	font-weight: 600;
	color: var(--arc-text-muted);
}

.arc-calc-select-wrap {
	position: relative;
}

.arc-calc-select-wrap::after {
	content: "";
	position: absolute;
	top: 50%;
	right: 16px;
	width: 10px;
	height: 10px;
	border-right: 2px solid var(--arc-accent);
	border-bottom: 2px solid var(--arc-accent);
	transform: translateY(-65%) rotate(45deg);
	pointer-events: none;
}

.arc-calc-select {
	width: 100%;
	appearance: none;
	padding: 14px 44px 14px 16px;
	background: var(--arc-surface-elevated);
	border: 1px solid var(--arc-border-strong);
	border-radius: var(--arc-radius-sm);
	color: var(--arc-text);
	font: inherit;
	font-size: 0.9375rem;
	cursor: pointer;
	transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.arc-calc-select:hover,
.arc-calc-select:focus {
	outline: none;
	border-color: var(--arc-accent);
	box-shadow: 0 0 0 3px var(--arc-accent-glow);
}

.arc-calc-slider-group {
	display: grid;
	gap: 22px;
	padding: 22px;
	background: rgba(15, 23, 42, 0.55);
	border: 1px solid var(--arc-border);
	border-radius: var(--arc-radius);
}

.arc-calc-field-head {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 16px;
}

.arc-calc-input-wrap {
	display: inline-flex;
	align-items: center;
	min-width: 88px;
	padding: 6px 10px;
	background: var(--arc-bg);
	border: 1px solid var(--arc-border-strong);
	border-radius: 8px;
}

.arc-calc-input-wrap--currency {
	gap: 4px;
	padding-left: 12px;
}

.arc-calc-currency {
	font-size: 0.8125rem;
	font-weight: 700;
	color: var(--arc-accent);
}

.arc-calc-number-input {
	width: 64px;
	padding: 0;
	background: transparent;
	border: 0;
	color: var(--arc-text);
	font: inherit;
	font-size: 0.9375rem;
	font-weight: 600;
	text-align: right;
	-moz-appearance: textfield;
}

.arc-calc-number-input::-webkit-outer-spin-button,
.arc-calc-number-input::-webkit-inner-spin-button {
	-webkit-appearance: none;
	margin: 0;
}

.arc-calc-number-input:focus {
	outline: none;
}

.arc-calc-range {
	width: 100%;
	height: 6px;
	margin: 4px 0 0;
	appearance: none;
	background: linear-gradient(90deg, var(--arc-accent) 0%, var(--arc-border) 0%);
	border-radius: 999px;
	cursor: pointer;
}

.arc-calc-range::-webkit-slider-runnable-track {
	height: 6px;
	background: transparent;
	border-radius: 999px;
}

.arc-calc-range::-webkit-slider-thumb {
	appearance: none;
	width: 20px;
	height: 20px;
	margin-top: -7px;
	background: var(--arc-text);
	border: 3px solid var(--arc-accent-strong);
	border-radius: 50%;
	box-shadow: 0 0 0 4px var(--arc-accent-glow);
	transition: transform 0.15s ease;
}

.arc-calc-range:active::-webkit-slider-thumb {
	transform: scale(1.08);
}

.arc-calc-range::-moz-range-track {
	height: 6px;
	background: var(--arc-border);
	border: 0;
	border-radius: 999px;
}

.arc-calc-range::-moz-range-progress {
	height: 6px;
	background: var(--arc-accent);
	border-radius: 999px;
}

.arc-calc-range::-moz-range-thumb {
	width: 20px;
	height: 20px;
	background: var(--arc-text);
	border: 3px solid var(--arc-accent-strong);
	border-radius: 50%;
	box-shadow: 0 0 0 4px var(--arc-accent-glow);
}

.arc-calc-lead {
	display: grid;
	gap: 16px;
	padding-top: 8px;
	border-top: 1px solid var(--arc-border);
}

.arc-calc-form {
	display: grid;
	gap: 14px;
}

.arc-calc-form-field {
	display: grid;
	gap: 8px;
}

.arc-calc-form-input {
	width: 100%;
	padding: 14px 16px;
	background: var(--arc-bg);
	border: 1px solid var(--arc-border-strong);
	border-radius: 8px;
	color: var(--arc-text);
	font: inherit;
	font-size: 0.9375rem;
	transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.arc-calc-form-input::placeholder {
	color: #64748b;
}

.arc-calc-form-input:focus {
	outline: none;
	border-color: var(--arc-accent);
	box-shadow: 0 0 0 3px var(--arc-accent-glow);
}

.arc-calc-submit {
	width: 100%;
	padding: 14px 20px;
	margin-top: 4px;
	background: var(--arc-text);
	border: 0;
	border-radius: 8px;
	color: var(--arc-bg);
	font: inherit;
	font-size: 0.875rem;
	font-weight: 700;
	cursor: pointer;
	white-space: nowrap;
	transition: opacity 0.2s ease, transform 0.15s ease;
}

.arc-calc-submit:hover:not(:disabled) {
	transform: translateY(-1px);
}

.arc-calc-submit:disabled {
	opacity: 0.65;
	cursor: wait;
}

.arc-calc-form-error {
	margin: 0;
	font-size: 0.8125rem;
	color: var(--arc-danger);
}

.arc-calc-success {
	display: none;
	gap: 6px;
	padding: 20px;
	background: rgba(6, 78, 59, 0.22);
	border: 1px solid rgba(52, 211, 153, 0.35);
	border-radius: var(--arc-radius-sm);
	text-align: center;
	animation: arc-calc-fade-in 0.3s ease;
}

.arc-calc-success-icon {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 40px;
	height: 40px;
	margin: 0 auto 4px;
	background: rgba(52, 211, 153, 0.15);
	border: 1px solid rgba(52, 211, 153, 0.45);
	border-radius: 50%;
	color: var(--arc-success);
	font-size: 1.125rem;
	font-weight: 700;
}

.arc-calc-success-title {
	margin: 0;
	font-size: 1.05rem;
	font-weight: 700;
	color: var(--arc-text);
}

.arc-calc-success-copy {
	margin: 0;
	font-size: 0.875rem;
	color: var(--arc-text-muted);
}

@keyframes arc-calc-fade-in {
	from {
		opacity: 0;
		transform: translateY(6px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

@media (max-width: 820px) {
	.arc-calc-shell {
		padding: 22px 18px;
	}
}