/*
 * Kalkulator BF — style.
 * Paleta Times Press / iFaktury (niebieski #0d6efd).
 */

.kw-bf {
	--kwbf-accent: #0d6efd;
	--kwbf-accent-hover: #0b5ed7;
	--kwbf-accent-soft: #e7f1ff;
	--kwbf-text: #212529;
	--kwbf-text-muted: #6c757d;
	--kwbf-bg: #fff;
	--kwbf-bg-alt: #f8f9fa;
	--kwbf-border: #dee2e6;
	--kwbf-radius: 6px;
	--kwbf-gap: 12px;

	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
	font-size: 14px;
	line-height: 1.5;
	color: var(--kwbf-text);
	max-width: 720px;
	margin: 0 auto;
	box-sizing: border-box;
}

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

.kw-bf__form {
	display: flex;
	flex-direction: column;
	gap: 16px;
	padding: 20px;
	background: var(--kwbf-bg-alt);
	border-radius: var(--kwbf-radius);
}

.kw-bf__row {
	display: flex;
	flex-wrap: wrap;
	gap: var(--kwbf-gap);
}

.kw-bf__field {
	display: flex;
	flex-direction: column;
	gap: 4px;
	flex: 1 1 200px;
	min-width: 0;
}

.kw-bf__label {
	font-size: 12px;
	color: var(--kwbf-text-muted);
	font-weight: 500;
}

.kw-bf__input,
.kw-bf__select {
	padding: 10px 12px;
	font-family: inherit;
	font-size: 14px;
	border: 1px solid var(--kwbf-border);
	border-radius: var(--kwbf-radius);
	background: var(--kwbf-bg);
	color: var(--kwbf-text);
	min-height: 40px;
	width: 100%;
}

.kw-bf__input:focus,
.kw-bf__select:focus {
	outline: 2px solid var(--kwbf-accent);
	outline-offset: 1px;
	border-color: var(--kwbf-accent);
}

.kw-bf__etat-wrap {
	display: flex;
	align-items: center;
	gap: 6px;
}

.kw-bf__input--etat {
	text-align: center;
	font-weight: 600;
	font-size: 16px;
	flex: 1;
}

.kw-bf__etat-sep {
	font-size: 20px;
	color: var(--kwbf-text-muted);
	font-weight: 700;
}

.kw-bf__checkbox {
	display: flex;
	align-items: flex-start;
	gap: 10px;
	padding: 12px 16px;
	background: var(--kwbf-bg);
	border: 1px solid var(--kwbf-border);
	border-radius: var(--kwbf-radius);
	cursor: pointer;
	user-select: none;
}

.kw-bf__checkbox input {
	accent-color: var(--kwbf-accent);
	margin: 2px 0 0 0;
	flex-shrink: 0;
}

.kw-bf__checkbox small {
	color: var(--kwbf-text-muted);
	font-size: 12px;
}

.kw-bf__checkbox:has(input:checked) {
	background: var(--kwbf-accent-soft);
	border-color: var(--kwbf-accent);
}

.kw-bf__actions {
	display: flex;
	justify-content: center;
	margin-top: 8px;
}

.kw-bf__btn {
	padding: 12px 32px;
	font-family: inherit;
	font-size: 15px;
	font-weight: 500;
	background: var(--kwbf-accent);
	color: #fff;
	border: none;
	border-radius: var(--kwbf-radius);
	cursor: pointer;
	min-width: 200px;
	transition: background 0.15s ease;
}

.kw-bf__btn:hover { background: var(--kwbf-accent-hover); }
.kw-bf__btn[disabled] { opacity: 0.6; cursor: not-allowed; }

.kw-bf__error {
	margin-top: 16px;
	padding: 12px 16px;
	background: #fdecea;
	color: #b00020;
	border-radius: var(--kwbf-radius);
	border-left: 3px solid #b00020;
}

.kw-bf__results { margin-top: 20px; }

.kw-bf__summary {
	padding: 24px;
	background: var(--kwbf-accent-soft);
	border-radius: var(--kwbf-radius);
	border: 2px solid var(--kwbf-accent);
	text-align: center;
}

.kw-bf__big-number {
	font-size: 48px;
	font-weight: 700;
	color: var(--kwbf-accent);
	margin: 0;
	font-variant-numeric: tabular-nums;
	line-height: 1.1;
}

.kw-bf__big-unit {
	font-size: 20px;
	color: var(--kwbf-text-muted);
	margin-left: 6px;
	font-weight: 500;
}

.kw-bf__big-label {
	font-size: 13px;
	color: var(--kwbf-text-muted);
	text-transform: uppercase;
	letter-spacing: 1px;
	margin: 4px 0 0;
}

.kw-bf__breakdown {
	margin-top: 16px;
	padding: 20px;
	background: var(--kwbf-bg);
	border: 1px solid var(--kwbf-border);
	border-radius: var(--kwbf-radius);
}

.kw-bf__breakdown-title {
	font-size: 14px;
	font-weight: 600;
	color: var(--kwbf-text);
	margin: 0 0 12px;
}

.kw-bf__breakdown-list {
	margin: 0;
	padding: 0;
	list-style: none;
}

.kw-bf__breakdown-list li {
	padding: 8px 0;
	border-bottom: 1px solid var(--kwbf-border);
	font-size: 13px;
	color: var(--kwbf-text);
}

.kw-bf__breakdown-list li:last-child { border-bottom: none; }

.kw-bf__breakdown-list strong { color: var(--kwbf-accent); }

@media (max-width: 640px) {
	.kw-bf__row { flex-direction: column; }
	.kw-bf__big-number { font-size: 36px; }
}

.kw-bf__field--full { flex: 1 1 100%; }

.kw-bf__amount-wrap { position: relative; }

.kw-bf__amount-wrap .kw-bf__input {
	padding-right: 50px;
	text-align: right;
	font-weight: 600;
	font-size: 16px;
}

.kw-bf__suffix {
	position: absolute;
	right: 12px;
	top: 50%;
	transform: translateY(-50%);
	color: var(--kwbf-text-muted);
	font-size: 13px;
	pointer-events: none;
}

.kw-bf__etat-wrap {
	display: flex;
	align-items: center;
	gap: 6px;
}

.kw-bf__input--etat {
	text-align: center;
	font-weight: 600;
	font-size: 16px;
	flex: 1;
}

.kw-bf__etat-sep {
	font-size: 20px;
	color: var(--kwbf-text-muted);
	font-weight: 700;
}

.kw-bf__checkbox {
	display: flex;
	align-items: center;
	gap: 10px;
	padding: 12px 16px;
	background: var(--kwbf-bg);
	border: 1px solid var(--kwbf-border);
	border-radius: var(--kwbf-radius);
	cursor: pointer;
	user-select: none;
}

.kw-bf__checkbox input {
	accent-color: var(--kwbf-accent);
	margin: 0;
	flex-shrink: 0;
}

.kw-bf__checkbox:has(input:checked) {
	background: var(--kwbf-accent-soft);
	border-color: var(--kwbf-accent);
}

.kw-bf__split-info {
	margin-top: 12px;
	padding: 10px 14px;
	background: var(--kwbf-accent-soft);
	border-radius: var(--kwbf-radius);
	font-size: 13px;
	color: var(--kwbf-text);
	border-left: 3px solid var(--kwbf-accent);
}

.kw-bf__variants {
	display: flex;
	flex-direction: column;
	gap: 8px;
}

.kw-bf__radio {
	display: flex;
	align-items: flex-start;
	gap: 10px;
	padding: 12px 16px;
	background: var(--kwbf-bg);
	border: 1px solid var(--kwbf-border);
	border-radius: var(--kwbf-radius);
	cursor: pointer;
	user-select: none;
}

.kw-bf__radio input {
	accent-color: var(--kwbf-accent);
	margin: 2px 0 0 0;
	flex-shrink: 0;
}

.kw-bf__radio small {
	color: var(--kwbf-text-muted);
	font-size: 12px;
}

.kw-bf__radio:has(input:checked) {
	background: var(--kwbf-accent-soft);
	border-color: var(--kwbf-accent);
}

.kw-bf__benefits-grid {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 12px;
	margin-top: 16px;
}

.kw-bf__benefit-tile {
	padding: 14px;
	background: var(--kwbf-bg);
	border: 1px solid var(--kwbf-border);
	border-radius: var(--kwbf-radius);
	text-align: center;
}

.kw-bf__benefit-value {
	font-size: 18px;
	font-weight: 700;
	color: var(--kwbf-accent);
	margin: 0 0 4px;
	font-variant-numeric: tabular-nums;
	word-break: break-word;
}

.kw-bf__benefit-label {
	font-size: 11px;
	color: var(--kwbf-text-muted);
	text-transform: uppercase;
	letter-spacing: 0.5px;
	margin: 0;
}

.kw-bf__benefit-period {
	font-size: 12px;
	color: var(--kwbf-text-muted);
	margin: 4px 0 0;
}

@media (max-width: 640px) {
	.kw-bf__benefits-grid { grid-template-columns: 1fr; }
}

.kw-bf__checkbox {
	display: flex;
	align-items: flex-start;
	gap: 10px;
	padding: 12px 16px;
	background: var(--kwbf-bg);
	border: 1px solid var(--kwbf-border);
	border-radius: var(--kwbf-radius);
	cursor: pointer;
	user-select: none;
}

.kw-bf__checkbox input {
	accent-color: var(--kwbf-accent);
	margin: 2px 0 0 0;
	flex-shrink: 0;
}

.kw-bf__checkbox small {
	color: var(--kwbf-text-muted);
	font-size: 12px;
}

.kw-bf__checkbox:has(input:checked) {
	background: var(--kwbf-accent-soft);
	border-color: var(--kwbf-accent);
}

.kw-bf__hint {
	display: block;
	font-size: 12px;
	color: var(--kwbf-text-muted);
	margin-top: 4px;
}

.kw-bf__tiles {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 12px;
	margin-top: 16px;
}

.kw-bf__tile {
	padding: 14px;
	background: var(--kwbf-bg);
	border: 1px solid var(--kwbf-border);
	border-radius: var(--kwbf-radius);
	text-align: center;
}

.kw-bf__tile-value {
	font-size: 18px;
	font-weight: 700;
	color: var(--kwbf-accent);
	margin: 0 0 4px;
	font-variant-numeric: tabular-nums;
	word-break: break-word;
}

.kw-bf__tile-label {
	font-size: 11px;
	color: var(--kwbf-text-muted);
	text-transform: uppercase;
	letter-spacing: 0.5px;
	margin: 0;
}

.kw-bf__exempt-banner {
	padding: 16px;
	background: #d1f7e8;
	color: #064e3b;
	border: 1px solid #34d399;
	border-radius: var(--kwbf-radius);
	font-weight: 600;
	text-align: center;
	margin-top: 12px;
}

@media (max-width: 640px) {
	.kw-bf__tiles { grid-template-columns: 1fr; }
}

.kw-bf__row { display: flex; gap: 12px; flex-wrap: wrap; }
.kw-bf__row .kw-bf__field { flex: 1 1 200px; }

.kw-bf__variants { display: flex; gap: 8px; flex-wrap: wrap; }
.kw-bf__radio {
	flex: 1 1 140px;
	display: flex; align-items: center; gap: 10px;
	padding: 12px 16px;
	background: var(--kwbf-bg);
	border: 1px solid var(--kwbf-border);
	border-radius: var(--kwbf-radius);
	cursor: pointer;
}
.kw-bf__radio input { accent-color: var(--kwbf-accent); }
.kw-bf__radio:has(input:checked) {
	background: var(--kwbf-accent-soft);
	border-color: var(--kwbf-accent);
}

.kw-bf__display {
	padding: 24px;
	border-radius: var(--kwbf-radius);
	text-align: center;
	margin-bottom: 16px;
	color: white;
}
.kw-bf__big-value {
	font-size: 56px;
	font-weight: 800;
	margin: 0;
	font-variant-numeric: tabular-nums;
	line-height: 1;
}
.kw-bf__big-unit { font-size: 28px; margin-left: 6px; opacity: 0.85; }
.kw-bf__big-label {
	font-size: 16px;
	font-weight: 600;
	margin: 8px 0 0;
	letter-spacing: 0.5px;
}

.kw-bf__tiles {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 12px;
	margin-top: 12px;
}
.kw-bf__tile {
	padding: 14px;
	background: var(--kwbf-bg);
	border: 1px solid var(--kwbf-border);
	border-radius: var(--kwbf-radius);
	text-align: center;
}
.kw-bf__tile-value {
	font-size: 18px;
	font-weight: 700;
	color: var(--kwbf-accent);
	margin: 0;
	font-variant-numeric: tabular-nums;
}
.kw-bf__tile-label {
	font-size: 11px;
	color: var(--kwbf-text-muted);
	text-transform: uppercase;
	margin: 4px 0 0;
}

@media (max-width: 640px) {
	.kw-bf__big-value { font-size: 42px; }
	.kw-bf__tiles { grid-template-columns: 1fr; }
}