.dcp-calculator {
	--dcp-navy: #1a2364;
	--dcp-orange: #f0533a;
	--dcp-border: #e2e8f0;
	--dcp-text: #1a202c;
	--dcp-muted: #64748b;
	--dcp-sand: #c4a574;
	--dcp-water: #2563eb;
	--dcp-control-height: 2.75rem;
	max-width: 1100px;
	margin: 0 auto;
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
	color: var(--dcp-text);
}

.dcp-calculator__title {
	text-align: center;
	font-size: 1.75rem;
	font-weight: 600;
	margin: 0 0 1.5rem;
}

.dcp-calculator__tabs {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 1rem;
	margin-bottom: 2rem;
}

.dcp-calculator__tab {
	border: 2px solid transparent;
	border-radius: 0;
	padding: 1.25rem 1rem;
	font-size: 1rem;
	font-weight: 600;
	color: #fff;
	cursor: pointer;
	opacity: 0.75;
	transition: opacity 0.15s ease, border-color 0.15s ease;
}

.dcp-calculator__tab:hover {
	opacity: 0.9;
}

.dcp-calculator__tab--concrete {
	background: var(--dcp-navy);
}

.dcp-calculator__tab--block {
	background: var(--dcp-orange);
}

.dcp-calculator__tab.is-active {
	opacity: 1;
	font-weight: 700;
	outline: none;
	border-color: #fff;
	box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.35);
}

.dcp-panel__layout {
	display: grid;
	grid-template-columns: 1fr;
	gap: 1.5rem;
}

@media (min-width: 768px) {
	.dcp-panel__layout {
		grid-template-columns: minmax(0, 1fr) minmax(280px, 380px);
		align-items: start;
	}
}

.dcp-panel__results {
	position: relative;
}

@media (min-width: 768px) {
	.dcp-panel__results {
		position: sticky;
		top: 1rem;
	}
}

.dcp-form__grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
	gap: 1rem;
	margin-bottom: 1.5rem;
}

.dcp-form label {
	display: flex;
	flex-direction: column;
	gap: 0.35rem;
	font-size: 0.9rem;
	font-weight: 500;
}

.dcp-form input,
.dcp-form select {
	box-sizing: border-box;
	min-height: var(--dcp-control-height);
	line-height: 1.5;
	padding: 0.5rem 0.75rem;
	border: 1px solid var(--dcp-border);
	border-radius: 0;
	font-size: 1rem;
	width: 100%;
}

.dcp-form select {
	appearance: none;
	background-color: #fff;
	background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%2364748b' d='M1.41 0 6 4.58 10.59 0 12 1.41l-6 6-6-6z'/%3E%3C/svg%3E");
	background-repeat: no-repeat;
	background-position: right 0.75rem center;
	padding-right: 2rem;
	font-weight: 600;
}

.dcp-form input[readonly] {
	background: #f1f5f9;
	color: var(--dcp-navy);
	font-weight: 600;
	cursor: default;
}

.dcp-material-toggle {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 0;
	border: 1px solid var(--dcp-border);
}

.dcp-material-toggle__btn {
	border: none;
	border-radius: 0;
	min-height: var(--dcp-control-height);
	padding: 0.5rem 0.75rem;
	font-size: 1rem;
	font-weight: 500;
	background: #f8fafc;
	color: var(--dcp-muted);
	cursor: pointer;
	transition: background 0.15s ease, color 0.15s ease;
}

.dcp-material-toggle__btn + .dcp-material-toggle__btn {
	border-left: 1px solid var(--dcp-border);
}

.dcp-material-toggle__btn.is-selected {
	background: var(--dcp-navy);
	color: #fff;
	font-weight: 700;
	box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.25);
}

.dcp-form__field--full {
	grid-column: 1 / -1;
	margin-bottom: 1rem;
}

.dcp-block-picker {
	border: 1px solid var(--dcp-border);
	border-radius: 0;
	padding: 1rem;
	margin: 0 0 1.5rem;
}

.dcp-block-picker legend {
	font-weight: 600;
	padding: 0 0.5rem;
}

.dcp-block-picker__grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
	gap: 0.75rem;
	margin-top: 0.75rem;
}

.dcp-block-card {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 0.5rem;
	padding: 0.75rem;
	border: 2px solid var(--dcp-border);
	border-radius: 0;
	background: #fff;
	cursor: pointer;
	transition: border-color 0.15s ease, background 0.15s ease;
}

.dcp-block-card:hover {
	border-color: var(--dcp-orange);
}

.dcp-block-picker--block .dcp-block-card.is-selected {
	border-color: var(--dcp-orange);
	background: rgba(240, 83, 58, 0.08);
	box-shadow: inset 0 0 0 2px var(--dcp-orange);
}

.dcp-block-card.is-selected .dcp-block-card__name {
	font-weight: 700;
}

.dcp-block-card__image {
	width: 100px;
	height: 80px;
	object-fit: contain;
	border-radius: 0;
	background: #fff;
}

.dcp-block-card__placeholder {
	width: 100px;
	height: 80px;
	border-radius: 0;
	background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
}

.dcp-block-card__name {
	font-size: 0.85rem;
	text-align: center;
	font-weight: 500;
}

.dcp-cement-picker {
	border: 1px solid var(--dcp-border);
	border-radius: 0;
	padding: 1rem;
	margin: 0 0 1.5rem;
}

.dcp-cement-picker legend {
	font-weight: 600;
	padding: 0 0.5rem;
}

.dcp-cement-picker__grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
	gap: 0.75rem;
	margin-top: 0.75rem;
}

.dcp-cement-card {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 0.5rem;
	padding: 0.75rem;
	border: 2px solid var(--dcp-border);
	border-radius: 0;
	background: #f8fafc;
	cursor: pointer;
	transition: border-color 0.15s ease, background 0.15s ease;
}

.dcp-cement-card:hover {
	border-color: var(--dcp-navy);
}

.dcp-cement-picker--concrete .dcp-cement-card.is-selected {
	border-color: var(--dcp-navy);
	background: rgba(26, 35, 100, 0.08);
	box-shadow: inset 0 0 0 2px var(--dcp-navy);
}

.dcp-cement-picker--block .dcp-cement-card.is-selected {
	border-color: var(--dcp-orange);
	background: rgba(240, 83, 58, 0.08);
	box-shadow: inset 0 0 0 2px var(--dcp-orange);
}

.dcp-cement-card.is-selected .dcp-cement-card__name {
	font-weight: 700;
}

.dcp-cement-card__image {
	width: 80px;
	height: 80px;
	object-fit: contain;
	border-radius: 0;
	background: #f1f5f9;
}

.dcp-cement-card__placeholder {
	width: 80px;
	height: 80px;
	border-radius: 0;
	background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
}

.dcp-cement-card__name {
	font-size: 0.85rem;
	text-align: center;
	font-weight: 500;
}

.dcp-btn-calculate {
	display: block;
	width: 100%;
	border: none;
	border-radius: 0;
	padding: 0.9rem 1.25rem;
	font-size: 1rem;
	font-weight: 600;
	color: #fff;
	text-transform: uppercase;
	letter-spacing: 0.03em;
	cursor: pointer;
	transition: opacity 0.15s ease;
}

.dcp-btn-calculate:hover {
	opacity: 0.92;
}

.dcp-btn-calculate--concrete {
	background: var(--dcp-navy);
}

.dcp-btn-calculate--block {
	background: var(--dcp-orange);
}

.dcp-results {
	background: #f8fafc;
	border: 1px solid var(--dcp-border);
	border-radius: 0;
	padding: 1.25rem;
	min-height: 200px;
}

.dcp-results--block {
	border-top: 4px solid var(--dcp-orange);
}

.dcp-results__placeholder {
	color: var(--dcp-muted);
	font-size: 0.95rem;
	line-height: 1.5;
	margin: 0;
}

.dcp-results__inner {
	display: grid;
	grid-template-columns: 1fr;
	gap: 1rem;
}

.dcp-results__body {
	min-width: 0;
}

.dcp-results h3 {
	margin: 0 0 1rem;
	font-size: 1.1rem;
	text-transform: uppercase;
	letter-spacing: 0.04em;
}

.dcp-results--concrete h3 {
	color: var(--dcp-navy);
}

.dcp-results--block h3 {
	color: var(--dcp-orange);
}

.dcp-results__grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: 0.75rem;
}

.dcp-results__item {
	background: #fff;
	border-radius: 0;
	padding: 0.75rem;
	border: 1px solid var(--dcp-border);
	border-left: none;
}

.dcp-results__item--sand {
	background: #faf6f0;
}

.dcp-results__item--agg {
	background: #f1f5f9;
}

.dcp-results__item--cement {
	background: #f0f2fa;
}

.dcp-results__item--water {
	background: #eff6ff;
}

.dcp-results__item--block {
	background: #fff5f3;
}

.dcp-results__label {
	display: block;
	font-size: 0.8rem;
	color: var(--dcp-muted);
	margin-bottom: 0.25rem;
}

.dcp-results__value {
	font-size: 1.1rem;
	font-weight: 600;
}

.dcp-results__value--wheel {
	display: inline-flex;
	align-items: center;
	gap: 0.4rem;
}

.dcp-results__icon {
	flex-shrink: 0;
	width: 24px;
	height: 24px;
	color: var(--dcp-muted);
}

.dcp-results__summary {
	margin: 1rem 0 0;
	padding: 0.9rem 1rem;
	border-radius: 0;
	font-size: 0.9rem;
	line-height: 1.5;
	font-weight: 600;
	text-align: center;
	border: none;
}

.dcp-results.dcp-results--concrete .dcp-results__summary {
	background: var(--dcp-navy);
	color: #fff;
}

.dcp-results--block .dcp-results__summary {
	background: var(--dcp-orange);
	color: #fff;
}

.dcp-results__heroes {
	display: flex;
	flex-direction: column;
	gap: 1rem;
}

.dcp-results__hero {
	display: flex;
	flex-direction: column;
	align-items: center;
	text-align: center;
	padding: 0.5rem;
}

.dcp-results__hero-image {
	max-width: 100%;
	width: 220px;
	height: auto;
	object-fit: contain;
	border-radius: 0;
	border: 2px solid var(--dcp-border);
}

.dcp-results__hero-name {
	margin: 0.75rem 0 0;
	font-size: 0.95rem;
	font-weight: 600;
	color: var(--dcp-text);
}

.dcp-calculator__loading,
.dcp-calculator__error {
	text-align: center;
	padding: 2rem;
	color: var(--dcp-muted);
}

.dcp-calculator__error {
	color: #b91c1c;
}

@media (max-width: 600px) {
	.dcp-calculator__tabs {
		grid-template-columns: 1fr;
	}
}