.zk-kalk {
	--zk-akcent: #2e7d32;
	--zk-tlo: #f5f9f5;
	--zk-ramka: #d5e3d5;
	--zk-tekst: inherit;
	max-width: 640px;
	margin: 1.5em 0;
	padding: 1.25em;
	border: 1px solid var(--zk-ramka);
	border-radius: 10px;
	background: var(--zk-tlo);
	color: var(--zk-tekst);
	font-size: 16px;
	line-height: 1.5;
	box-sizing: border-box;
}

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

.zk-plec {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5em 1.5em;
	margin: 0 0 1em;
	padding: 0;
	border: 0;
}

.zk-plec legend {
	width: 100%;
	margin-bottom: 0.25em;
	padding: 0;
	font-weight: 600;
}

.zk-plec label {
	display: inline-flex;
	align-items: center;
	gap: 0.4em;
	cursor: pointer;
}

.zk-siatka {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
	gap: 0 1em;
}

.zk-pole {
	margin-bottom: 1em;
}

.zk-pole label {
	display: block;
	margin-bottom: 0.25em;
	font-weight: 600;
}

.zk-jedn {
	display: flex;
	align-items: center;
	gap: 0.5em;
}

.zk-kalk input[type="text"],
.zk-kalk select {
	width: 100%;
	min-height: 44px;
	padding: 0.5em 0.75em;
	border: 1px solid #b8c7b8;
	border-radius: 6px;
	background: #fff;
	color: #1d1d1d;
	font: inherit;
}

.zk-jedn input[type="text"] {
	flex: 1;
	min-width: 0;
}

.zk-kalk input[aria-invalid="true"] {
	border-color: #c62828;
}

.zk-kalk input:focus,
.zk-kalk select:focus,
.zk-kalk button:focus {
	outline: 2px solid var(--zk-akcent);
	outline-offset: 2px;
}

.zk-kalk button {
	min-height: 44px;
	padding: 0.6em 1.75em;
	border: 0;
	border-radius: 6px;
	background: var(--zk-akcent);
	color: #fff;
	font: inherit;
	font-weight: 600;
	cursor: pointer;
}

.zk-kalk button:hover {
	filter: brightness(1.1);
}

.zk-bledy p {
	margin: 0.75em 0 0;
	color: #c62828;
}

.zk-wynik {
	margin-top: 1.25em;
	padding-top: 1.25em;
	border-top: 1px solid var(--zk-ramka);
}

.zk-glowny {
	margin: 0 0 0.75em;
	font-size: 1.15em;
}

.zk-glowny strong {
	color: var(--zk-akcent);
	font-size: 1.3em;
	white-space: nowrap;
}

.zk-tabela {
	width: 100%;
	margin: 0 0 1em;
	border-collapse: collapse;
}

.zk-tabela th,
.zk-tabela td {
	padding: 0.5em 0;
	border-bottom: 1px solid var(--zk-ramka);
	text-align: left;
	vertical-align: top;
}

.zk-tabela td {
	padding-left: 1em;
	text-align: right;
	font-weight: 600;
	white-space: nowrap;
}

.zk-tabela small {
	display: block;
	font-weight: 400;
	opacity: 0.75;
}

.zk-uwaga {
	padding: 0.75em;
	border-left: 4px solid #ef6c00;
	background: #fff3e0;
	color: #1d1d1d;
}

.zk-link {
	color: var(--zk-akcent);
	font-weight: 600;
}

.zk-przypis {
	margin: 1em 0 0;
	font-size: 0.85em;
	opacity: 0.75;
}