/**
 * Steel and construction calculator modal styles.
 *
 * Loaded only on the front end by kathmandu_steel_calculator_assets().
 * Footer link styling lives in style.css with the rest of the footer.
 *
 * @package KathmanduSteel
 */

:root {
	--ks-calc-ink: #10233f;
	--ks-calc-muted: #64748b;
	--ks-calc-border: #dfe4ec;
	--ks-calc-surface: #ffffff;
	--ks-calc-soft: #f5f7fa;
	--ks-calc-accent: #ff6214;
	--ks-calc-accent-ink: #c4511d;
	--ks-calc-danger: #b32b2b;
	--ks-calc-radius: 0.85rem;
}

body.ks-calc-open {
	overflow: hidden;
}

/* Modal shell
--------------------------------------------- */
.ks-calc-modal {
	position: fixed;
	inset: 0;
	z-index: 1110;
	display: flex;
	align-items: flex-start;
	justify-content: center;
	padding: clamp(0.75rem, 4vh, 3rem) 1rem;
	overflow-y: auto;
	overscroll-behavior: contain;
}

.ks-calc-modal[hidden] {
	display: none;
}

.ks-calc-modal__backdrop {
	position: fixed;
	inset: 0;
	background: rgba(12, 27, 49, 0.72);
	opacity: 0;
	transition: opacity 200ms ease;
}

.ks-calc-modal__dialog {
	position: relative;
	width: min(100%, 640px);
	background: var(--ks-calc-surface);
	border-radius: 1.1rem;
	box-shadow: 0 28px 64px rgba(12, 27, 49, 0.3);
	opacity: 0;
	transform: translateY(18px) scale(0.985);
	transition: opacity 200ms ease, transform 220ms cubic-bezier(0.2, 0.8, 0.3, 1);
}

.ks-calc-modal.is-open .ks-calc-modal__backdrop {
	opacity: 1;
}

.ks-calc-modal.is-open .ks-calc-modal__dialog {
	opacity: 1;
	transform: translateY(0) scale(1);
}

@media (prefers-reduced-motion: reduce) {
	.ks-calc-modal__backdrop,
	.ks-calc-modal__dialog {
		transition: none;
	}
}

.ks-calc-modal__header {
	display: flex;
	align-items: center;
	gap: 1rem;
	padding: 1.1rem 1.35rem;
	border-bottom: 1px solid var(--ks-calc-border);
	background: linear-gradient(135deg, #10233f 0%, #1f2058 100%);
	border-radius: 1.1rem 1.1rem 0 0;
}

.ks-calc-modal__title {
	flex: 1 1 auto;
	margin: 0;
	color: #fff;
	font-size: clamp(1.05rem, 2.4vw, 1.3rem);
	font-weight: 800;
	line-height: 1.3;
}

.ks-calc-modal__close {
	flex: 0 0 auto;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 2.25rem;
	height: 2.25rem;
	padding: 0;
	border: 1px solid rgba(255, 255, 255, 0.28);
	border-radius: 50%;
	background: rgba(255, 255, 255, 0.1);
	color: #fff;
	font-size: 1rem;
	line-height: 1;
	cursor: pointer;
	transition: background 150ms ease, border-color 150ms ease;
}

.ks-calc-modal__close:hover,
.ks-calc-modal__close:focus-visible {
	background: var(--ks-calc-accent);
	border-color: var(--ks-calc-accent);
}

.ks-calc-modal__body {
	padding: 1.35rem;
}

/* Calculator panel
--------------------------------------------- */
.ks-calc[hidden] {
	display: none;
}

.ks-calc__intro {
	margin: 0 0 1.15rem;
	color: var(--ks-calc-muted);
	font-size: 0.9rem;
	line-height: 1.6;
}

.ks-calc__grid {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: 0.9rem 1rem;
}

.ks-calc__field[hidden] {
	display: none;
}

.ks-calc__field--wide {
	grid-column: 1 / -1;
}

.ks-calc__label {
	display: block;
	margin-bottom: 0.35rem;
	color: var(--ks-calc-ink);
	font-size: 0.82rem;
	font-weight: 700;
	letter-spacing: 0.01em;
}

.ks-calc__control {
	display: flex;
	align-items: stretch;
	gap: 0.4rem;
}

.ks-calc__input,
.ks-calc__unit {
	min-width: 0;
	padding: 0.6rem 0.7rem;
	border: 1px solid var(--ks-calc-border);
	border-radius: 0.55rem;
	background: var(--ks-calc-surface);
	color: var(--ks-calc-ink);
	font-family: inherit;
	font-size: 0.95rem;
	line-height: 1.35;
	transition: border-color 150ms ease, box-shadow 150ms ease;
}

.ks-calc__input {
	flex: 1 1 auto;
	width: 100%;
}

.ks-calc__unit {
	flex: 0 0 auto;
	width: auto;
	max-width: 7.5rem;
	background: var(--ks-calc-soft);
	font-weight: 600;
}

.ks-calc__input:focus,
.ks-calc__unit:focus {
	outline: none;
	border-color: var(--ks-calc-accent);
	box-shadow: 0 0 0 3px rgba(255, 98, 20, 0.18);
}

.ks-calc__input:focus-visible,
.ks-calc__unit:focus-visible,
.ks-calc__button:focus-visible,
.ks-calc-modal__close:focus-visible {
	outline: 2px solid var(--ks-calc-accent);
	outline-offset: 2px;
}

.ks-calc__input.is-invalid {
	border-color: var(--ks-calc-danger);
	box-shadow: 0 0 0 3px rgba(179, 43, 43, 0.14);
}

.ks-calc__suffix {
	display: inline-flex;
	align-items: center;
	padding: 0 0.7rem;
	border: 1px solid var(--ks-calc-border);
	border-radius: 0.55rem;
	background: var(--ks-calc-soft);
	color: var(--ks-calc-muted);
	font-size: 0.82rem;
	font-weight: 700;
	white-space: nowrap;
}

.ks-calc__help {
	margin: 0.35rem 0 0;
	color: var(--ks-calc-muted);
	font-size: 0.75rem;
	line-height: 1.5;
}

.ks-calc__error {
	margin: 0.3rem 0 0;
	color: var(--ks-calc-danger);
	font-size: 0.75rem;
	font-weight: 600;
	line-height: 1.4;
}

.ks-calc__error:empty {
	display: none;
}

/* Actions
--------------------------------------------- */
.ks-calc__actions {
	display: flex;
	flex-wrap: wrap;
	gap: 0.6rem;
	margin-top: 1.25rem;
}

.ks-calc__button {
	flex: 1 1 auto;
	padding: 0.7rem 1.3rem;
	border: 1px solid transparent;
	border-radius: 0.55rem;
	font-family: inherit;
	font-size: 0.92rem;
	font-weight: 800;
	letter-spacing: 0.02em;
	text-transform: uppercase;
	cursor: pointer;
	transition: background 150ms ease, color 150ms ease, border-color 150ms ease;
}

.ks-calc__button--primary {
	background: var(--ks-calc-accent);
	color: #fff;
}

.ks-calc__button--primary:hover,
.ks-calc__button--primary:focus-visible {
	background: #e5540c;
}

.ks-calc__button--ghost {
	max-width: 9rem;
	border-color: var(--ks-calc-border);
	background: var(--ks-calc-surface);
	color: var(--ks-calc-ink);
}

.ks-calc__button--ghost:hover,
.ks-calc__button--ghost:focus-visible {
	border-color: var(--ks-calc-ink);
	background: var(--ks-calc-soft);
}

/* Results
--------------------------------------------- */
.ks-calc__results {
	margin-top: 1.35rem;
	padding: 1.1rem 1.15rem;
	border: 1px solid var(--ks-calc-border);
	border-radius: var(--ks-calc-radius);
	background: var(--ks-calc-soft);
}

.ks-calc__results-head {
	display: flex;
	align-items: flex-end;
	justify-content: space-between;
	gap: 1rem;
	flex-wrap: wrap;
	margin-bottom: 0.85rem;
}

.ks-calc__results-title {
	margin: 0;
	color: var(--ks-calc-ink);
	font-size: 0.78rem;
	font-weight: 800;
	letter-spacing: 0.12em;
	text-transform: uppercase;
}

.ks-calc__result-unit {
	display: flex;
	align-items: center;
	gap: 0.5rem;
}

.ks-calc__result-unit .ks-calc__label {
	margin: 0;
	font-size: 0.75rem;
	font-weight: 600;
	color: var(--ks-calc-muted);
}

.ks-calc__result-list {
	display: grid;
	gap: 0.5rem;
	margin: 0;
}

.ks-calc__result {
	display: flex;
	align-items: baseline;
	justify-content: space-between;
	gap: 1rem;
	padding: 0.55rem 0.7rem;
	border-radius: 0.5rem;
	background: var(--ks-calc-surface);
}

.ks-calc__result-label {
	margin: 0;
	color: var(--ks-calc-muted);
	font-size: 0.84rem;
	font-weight: 600;
}

.ks-calc__result-value {
	margin: 0;
	color: var(--ks-calc-ink);
	font-size: 0.98rem;
	font-weight: 800;
	font-variant-numeric: tabular-nums;
	text-align: right;
	word-break: break-word;
}

.ks-calc__result--primary {
	background: #10233f;
}

.ks-calc__result--primary .ks-calc__result-label {
	color: rgba(255, 255, 255, 0.72);
}

.ks-calc__result--primary .ks-calc__result-value {
	color: #fff;
	font-size: 1.15rem;
}

.ks-calc__note {
	margin: 0.9rem 0 0;
	color: var(--ks-calc-muted);
	font-size: 0.74rem;
	line-height: 1.6;
}

/* Responsive
--------------------------------------------- */
@media screen and (max-width: 37.5em) {
	.ks-calc-modal {
		padding: 0;
		align-items: stretch;
	}

	.ks-calc-modal__dialog {
		width: 100%;
		min-height: 100%;
		border-radius: 0;
	}

	.ks-calc-modal__header {
		position: sticky;
		top: 0;
		z-index: 2;
		border-radius: 0;
	}

	.ks-calc__grid {
		grid-template-columns: 1fr;
	}

	.ks-calc__actions {
		flex-direction: column;
	}

	.ks-calc__button--ghost {
		max-width: none;
	}

	.ks-calc__result {
		flex-direction: column;
		align-items: flex-start;
		gap: 0.15rem;
	}

	.ks-calc__result-value {
		text-align: left;
	}
}