.decking-calculator {
	--deck-green: #0b7a55;
	--deck-green-dark: #0d2d24;
	--deck-green-soft: #e6f5ee;
	--deck-line: #d1e3da;
	--deck-muted: #61736c;
	display: grid;
	gap: 42px;
}

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

.decking-diagrams {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: 24px;
}

.decking-diagram-card,
.decking-form,
.decking-result,
.decking-drawing,
.decking-content,
.decking-faq {
	margin: 0;
	border: 1px solid var(--deck-line);
	border-radius: 28px;
	background: #fff;
	box-shadow: 0 18px 45px rgba(20, 35, 30, 0.07);
}

.decking-diagram-card {
	padding: 18px;
}

.decking-diagram-card img {
	display: block;
	width: 100%;
	height: auto;
	border: 1px solid #dce9e3;
	border-radius: 20px;
	background: #f9fcfa;
}

.decking-diagram-card figcaption,
.decking-drawing__caption {
	margin: 16px 6px 2px;
	color: var(--deck-muted);
	font-size: 1rem;
	line-height: 1.55;
}

.decking-workspace {
	display: grid;
	grid-template-columns: minmax(0, 1.08fr) minmax(340px, 0.92fr);
	gap: 24px;
	align-items: start;
}

.decking-form,
.decking-result,
.decking-drawing,
.decking-content,
.decking-faq {
	padding: clamp(24px, 4vw, 44px);
}

.decking-result {
	position: sticky;
	top: 24px;
}

.decking-form__eyebrow,
.decking-result__eyebrow,
.decking-drawing__eyebrow,
.decking-actions__eyebrow,
.decking-content__eyebrow,
.decking-faq__eyebrow {
	margin: 0 0 8px;
	color: var(--deck-green);
	font-size: 0.82rem;
	font-weight: 900;
	letter-spacing: 0.14em;
	text-transform: uppercase;
}

.decking-form h2,
.decking-result h2,
.decking-drawing h2,
.decking-actions h2,
.decking-content h2,
.decking-faq h2 {
	margin: 0;
	font-size: clamp(1.7rem, 3vw, 2.55rem);
	line-height: 1.08;
}

.decking-form__heading > p:last-child,
.decking-result__heading > p:last-child {
	margin: 14px 0 0;
	color: var(--deck-muted);
}

.decking-form__group {
	margin: 30px 0 0;
	padding: 26px 0 0;
	border: 0;
	border-top: 1px solid var(--deck-line);
}

.decking-form__group legend {
	padding: 0 12px 0 0;
	font-size: 1.2rem;
	font-weight: 850;
}

.decking-form__grid,
.decking-form__subgrid {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: 18px;
}

.field--wide {
	grid-column: 1 / -1;
}

.field {
	display: grid;
	gap: 8px;
	color: #29433a;
	font-weight: 750;
}

.field input,
.field select,
.decking-actions select {
	width: 100%;
	min-height: 54px;
	padding: 0 15px;
	border: 1px solid #b9d3c7;
	border-radius: 14px;
	color: #14231e;
	background: #fff;
	font: inherit;
}

.field input:focus,
.field select:focus,
.decking-actions select:focus {
	outline: 3px solid rgba(20, 128, 92, 0.16);
	border-color: var(--deck-green);
}

.field-pair {
	display: grid;
	grid-template-columns: 1fr auto 1fr;
	gap: 8px;
	align-items: center;
}

.decking-form__prices {
	margin-top: 26px;
	border: 1px solid var(--deck-line);
	border-radius: 18px;
	background: #f8fbf9;
}

.decking-form__prices summary {
	cursor: pointer;
	padding: 18px 20px;
	font-weight: 850;
}

.decking-form__prices .decking-form__grid {
	padding: 0 20px 20px;
}

.button {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-height: 56px;
	padding: 0 24px;
	border: 1px solid transparent;
	border-radius: 14px;
	font: inherit;
	font-weight: 850;
	cursor: pointer;
	transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.button:hover {
	transform: translateY(-2px);
}

.button--primary,
.button--accent {
	color: #fff;
	background: linear-gradient(135deg, #12a678, var(--deck-green));
}

.decking-form__submit {
	width: 100%;
	margin-top: 24px;
}

.decking-result__metrics {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: 12px;
	margin-top: 24px;
}

.metric {
	display: grid;
	gap: 8px;
	padding: 17px;
	border-radius: 17px;
	background: var(--deck-green-soft);
}

.metric span {
	color: var(--deck-muted);
	font-size: 0.9rem;
}

.metric strong {
	font-size: 1.3rem;
}

.decking-result__section {
	margin-top: 26px;
}

.decking-result__section h3 {
	margin: 0 0 10px;
}

.spec-list {
	margin: 0;
}

.spec-list div {
	display: flex;
	justify-content: space-between;
	gap: 18px;
	padding: 12px 0;
	border-bottom: 1px solid #e1ebe6;
}

.spec-list dt {
	color: var(--deck-muted);
}

.spec-list dd {
	margin: 0;
	font-weight: 850;
	text-align: right;
}

.decking-result__recommendation {
	margin-top: 24px;
	padding: 16px 18px;
	border-left: 4px solid var(--deck-green);
	border-radius: 0 14px 14px 0;
	background: #f2f8f5;
	line-height: 1.55;
}

.decking-drawing__header {
	display: grid;
	grid-template-columns: 1fr minmax(280px, 0.8fr);
	gap: 24px;
	align-items: end;
}

.decking-drawing__header > p {
	margin: 0;
	color: var(--deck-muted);
	line-height: 1.55;
}

.decking-drawing__canvas {
	margin-top: 26px;
	overflow: hidden;
	border: 1px solid var(--deck-line);
	border-radius: 22px;
	background: #f9fcfa;
}

.decking-drawing svg {
	display: block;
	width: 100%;
	height: auto;
}

.decking-actions {
	display: grid;
	grid-template-columns: minmax(260px, 0.72fr) minmax(420px, 1.28fr);
	gap: 42px;
	padding: clamp(28px, 5vw, 52px);
	border-radius: 28px;
	color: #fff;
	background: var(--deck-green-dark);
	box-shadow: 0 20px 50px rgba(13, 45, 36, 0.16);
}

.decking-actions__eyebrow {
	color: #72dfb6;
}

.decking-actions__intro > p:last-child {
	color: #c8d8d2;
	line-height: 1.55;
}

.decking-actions__controls {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: 14px;
	align-content: start;
}

.decking-actions .button--secondary {
	color: #fff;
	border-color: rgba(255, 255, 255, 0.28);
	background: rgba(255, 255, 255, 0.08);
}

.decking-actions__download {
	display: grid;
	gap: 8px;
	grid-column: 1 / 2;
	font-weight: 800;
}

.decking-actions__copy {
	grid-column: 1 / 2;
}

.decking-actions__status {
	grid-column: 1 / -1;
	min-height: 24px;
	margin: 0;
	color: #9ceacb;
}

.decking-content__grid {
	display: grid;
	grid-template-columns: 1.2fr 0.8fr;
	gap: 28px;
	margin: 26px 0 34px;
}

.decking-purchase {
	margin: 0 0 34px;
	padding: 24px;
	border: 1px solid var(--deck-line);
	border-radius: 20px;
	background: #f8fbf9;
}

.decking-purchase h3 {
	margin: 0 0 18px;
}

.decking-purchase__grid {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 18px;
}

.decking-purchase__grid p {
	margin: 0;
}

.decking-content p,
.decking-content li,
.decking-faq p {
	color: #455c54;
	line-height: 1.68;
}

.decking-tip {
	padding: 22px;
	border-radius: 20px;
	background: var(--deck-green-soft);
}

.decking-tip h3,
.decking-content > h3 {
	margin-top: 0;
}

.decking-table-wrap {
	overflow-x: auto;
}

.decking-table {
	width: 100%;
	border-collapse: collapse;
}

.decking-table th,
.decking-table td {
	padding: 14px;
	border-bottom: 1px solid var(--deck-line);
	text-align: left;
	vertical-align: top;
}

.decking-table th {
	color: #fff;
	background: var(--deck-green-dark);
}

.decking-faq details {
	border-top: 1px solid var(--deck-line);
}

.decking-faq summary {
	cursor: pointer;
	padding: 19px 0;
	font-weight: 850;
}

.decking-faq details p {
	margin-top: 0;
}

.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;
}

@media (max-width: 900px) {
	.decking-workspace,
	.decking-actions,
	.decking-drawing__header,
	.decking-content__grid,
	.decking-purchase__grid {
		grid-template-columns: 1fr;
	}

	.decking-result {
		position: static;
	}
}

@media (max-width: 680px) {
	.decking-calculator {
		gap: 26px;
	}

	.decking-diagrams,
	.decking-form__grid,
	.decking-form__subgrid,
	.decking-result__metrics,
	.decking-actions__controls {
		grid-template-columns: 1fr;
	}

	.field--wide,
	.decking-actions__download,
	.decking-actions__copy,
	.decking-actions__status {
		grid-column: 1;
	}

	.decking-form,
	.decking-result,
	.decking-drawing,
	.decking-content,
	.decking-faq,
	.decking-actions {
		padding: 22px;
		border-radius: 20px;
	}

	.spec-list div {
		display: grid;
		gap: 4px;
	}

	.spec-list dd {
		text-align: left;
	}
}