/* ============================================================
   ISOLIERGLAS ONLINE — calculator.css
   Phase 3 calculator section. Depends on variables.css + main.css + sections.css.
   ============================================================ */


/* ============================================================
   SECTION SHELL
   ============================================================ */
.ig-calc {
	padding: 100px 32px;
	max-width: var(--ig-max);
	margin: 0 auto;
	scroll-margin-top: 80px; /* sticky-header offset for #kalkulator anchor */
}
.ig-calc-header {
	text-align: center;
	margin-bottom: 50px;
}
.ig-calc-header .ig-section-title {
	max-width: 720px;
	margin: 10px auto 14px;
}
.ig-calc-header-sub {
	text-align: center;
	max-width: 580px;
	margin: 0 auto;
}


/* ============================================================
   CARD — 1.2fr / 1fr split, paper card on warm surface
   ============================================================ */
.ig-calc-card {
	background: var(--ig-card);
	border: 1px solid var(--ig-ink-line);
	border-radius: var(--ig-r-xl);
	padding: 48px;
	box-shadow: var(--ig-sh-lg);
	display: grid;
	grid-template-columns: 1.2fr 1fr;
	gap: 60px;
}


/* ============================================================
   FORM COLUMN
   ============================================================ */
.ig-calc-form-col {
	display: flex;
	flex-direction: column;
}

.ig-pieces {
	display: flex;
	flex-direction: column;
	gap: 28px;
}

/* Add piece button */
.ig-add-piece-btn {
	margin-top: 22px;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	padding: 14px 22px;
	font-family: var(--ig-font);
	font-size: 13px;
	font-weight: 600;
	color: var(--ig-ink);
	background: transparent;
	border: 1.5px dashed var(--ig-ink-line);
	border-radius: var(--ig-r-md);
	cursor: pointer;
	transition: border-color var(--ig-t-fast), background var(--ig-t-fast);
	align-self: flex-start;
}
.ig-add-piece-btn:hover {
	border-color: var(--ig-ink);
	background: var(--ig-paper-2);
	border-style: solid;
}
.ig-add-piece-btn:focus-visible {
	outline: 2px solid var(--ig-brass);
	outline-offset: 3px;
}

.ig-calc-custom-hint {
	margin-top: 18px;
	padding: 14px 0;
	border-top: 1px dashed var(--ig-ink-line);
	font-family: var(--ig-font-mono);
	font-size: 11px;
	letter-spacing: 0.04em;
	color: var(--ig-text-muted);
}
.ig-calc-custom-hint a {
	color: var(--ig-brass-deep);
	font-weight: 600;
	margin-left: 8px;
}
.ig-calc-custom-hint a:hover {
	color: var(--ig-brass);
}


/* ============================================================
   PIECE — single configurable element
   ============================================================ */
.ig-piece {
	position: relative;
	padding: 4px 0 0;
}
.ig-piece + .ig-piece {
	padding-top: 28px;
	border-top: 1px solid var(--ig-ink-line);
}

.ig-piece-head {
	display: flex;
	justify-content: space-between;
	align-items: center;
	margin-bottom: 22px;
}
.ig-piece-head-right {
	display: inline-flex;
	align-items: center;
	gap: 14px;
}
.ig-piece-code {
	font-family: var(--ig-font-mono);
	font-size: 13px;
	font-weight: 600;
	color: var(--ig-brass-deep);
	letter-spacing: 0.04em;
	background: var(--ig-brass-soft);
	padding: 4px 10px;
	border-radius: var(--ig-r-sm);
}

/* Two-up field row (thickness + szr side by side) */
.ig-piece-field-row {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 22px;
}

/* Preset quick-fill chips — taller, two-line */
.ig-opt-group-preset {
	gap: 10px;
}
.ig-opt-preset {
	display: flex;
	flex-direction: column;
	align-items: flex-start;
	gap: 3px;
	padding: 10px 16px;
	text-align: left;
	line-height: 1.2;
}
.ig-opt-preset-label {
	font-family: var(--ig-font);
	font-size: 13px;
	font-weight: 600;
}
.ig-opt-preset-code {
	font-family: var(--ig-font-mono);
	font-size: 11px;
	opacity: 0.7;
}
.ig-piece-name {
	display: inline-flex;
	align-items: baseline;
	gap: 8px;
	font-family: var(--ig-font-mono);
	font-size: 11px;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: var(--ig-text-subtle);
	font-weight: 500;
}
.ig-piece-num {
	color: var(--ig-brass-deep);
	font-weight: 700;
}
.ig-piece-remove {
	background: transparent;
	border: none;
	font-family: var(--ig-font-mono);
	font-size: 11px;
	letter-spacing: 0.04em;
	text-transform: uppercase;
	color: var(--ig-text-subtle);
	cursor: pointer;
	padding: 6px 10px;
	border-radius: var(--ig-r-sm);
	transition: color var(--ig-t-fast), background var(--ig-t-fast);
}
.ig-piece-remove:hover {
	color: var(--ig-stat-poor);
	background: rgba(196, 69, 69, 0.06);
}
/* Hide remove on the first (only) piece — JS toggles when >1 */
.ig-piece-remove[hidden] { display: none !important; }

.ig-piece-field {
	margin-bottom: 22px;
}
.ig-piece-label-mono {
	display: block;
	font-family: var(--ig-font-mono);
	font-size: 10px;
	letter-spacing: 0.10em;
	text-transform: uppercase;
	color: var(--ig-text-subtle);
	margin-bottom: 10px;
	font-weight: 500;
}


/* --- Option chip group ---------------------------------------------------- */
.ig-opt-group {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
}
.ig-opt {
	padding: 10px 16px;
	font-family: var(--ig-font-mono);
	font-size: 12px;
	font-weight: 500;
	background: var(--ig-paper);
	border: 1.5px solid var(--ig-ink-line);
	border-radius: var(--ig-r-sm);
	color: var(--ig-text);
	cursor: pointer;
	transition: background var(--ig-t-fast), color var(--ig-t-fast),
				border-color var(--ig-t-fast);
}
.ig-opt:hover {
	border-color: var(--ig-ink);
}
.ig-opt.is-selected {
	background: var(--ig-ink);
	color: var(--ig-on-ink);
	border-color: var(--ig-ink);
}
.ig-opt:focus-visible {
	outline: 2px solid var(--ig-brass);
	outline-offset: 2px;
}


/* --- Dimensions inputs ---------------------------------------------------- */
.ig-size-fields {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 14px;
}
.ig-input-shell {
	position: relative;
}
.ig-input-shell input {
	width: 100%;
	padding: 16px 60px 16px 18px;
	font-family: var(--ig-font-mono);
	font-size: 16px;
	font-weight: 500;
	color: var(--ig-ink);
	background: var(--ig-paper);
	border: 1.5px solid var(--ig-ink-line);
	border-radius: var(--ig-r-md);
	outline: none;
	transition: border-color var(--ig-t-fast);
	/* Remove default number input spinners (cleaner look) */
	-moz-appearance: textfield;
}
.ig-input-shell input::-webkit-outer-spin-button,
.ig-input-shell input::-webkit-inner-spin-button {
	-webkit-appearance: none;
	margin: 0;
}
.ig-input-shell input:focus {
	border-color: var(--ig-brass);
}
.ig-input-shell .ig-unit {
	position: absolute;
	right: 16px;
	top: 50%;
	transform: translateY(-50%);
	font-family: var(--ig-font-mono);
	font-size: 12px;
	color: var(--ig-text-muted);
	pointer-events: none;
}
.ig-input-shell.is-invalid input {
	border-color: var(--ig-stat-poor);
}
.ig-piece-error {
	margin-top: 8px;
	font-size: 12px;
	color: var(--ig-stat-poor);
	font-weight: 500;
}


/* --- Warm-edge toggle row ------------------------------------------------- */
.ig-toggle-row {
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 16px;
	padding: 14px 18px;
	background: var(--ig-paper);
	border: 1px solid var(--ig-ink-line);
	border-radius: var(--ig-r-md);
	cursor: pointer;
	width: 100%;
	font-family: var(--ig-font);
	text-align: left;
	transition: border-color var(--ig-t-fast);
}
.ig-toggle-row:hover {
	border-color: var(--ig-ink);
}
.ig-toggle-row:focus-visible {
	outline: 2px solid var(--ig-brass);
	outline-offset: 2px;
}
.ig-toggle-text {
	flex: 1;
}
.ig-toggle-title {
	display: block;
	font-size: 14px;
	font-weight: 500;
	color: var(--ig-ink);
}
.ig-toggle-text small {
	display: block;
	font-size: 12px;
	font-weight: 400;
	color: var(--ig-text-muted);
	margin-top: 2px;
}
.ig-toggle-control {
	display: inline-flex;
	align-items: center;
	gap: 14px;
}
.ig-toggle-price {
	font-family: var(--ig-font-mono);
	font-size: 13px;
	color: var(--ig-brass-deep);
	font-weight: 600;
	min-width: 70px;
	text-align: right;
}
.ig-toggle-switch {
	display: inline-block;
	position: relative;
	width: 36px;
	height: 20px;
	background: var(--ig-ink-line);
	border-radius: 999px;
	transition: background var(--ig-t-fast);
	flex-shrink: 0;
}
.ig-toggle-knob {
	position: absolute;
	top: 2px;
	left: 2px;
	width: 16px;
	height: 16px;
	background: var(--ig-card);
	border-radius: 50%;
	box-shadow: 0 1px 3px rgba(0, 0, 0, 0.18);
	transition: transform var(--ig-t-base);
}
.ig-toggle-row[aria-pressed="true"] .ig-toggle-switch {
	background: var(--ig-brass);
}
.ig-toggle-row[aria-pressed="true"] .ig-toggle-knob {
	transform: translateX(16px);
}


/* --- Quantity + per-piece subtotal --------------------------------------- */
.ig-piece-foot {
	display: flex;
	justify-content: space-between;
	align-items: flex-end;
	gap: 24px;
	padding-top: 18px;
	border-top: 1px dashed var(--ig-ink-line);
	flex-wrap: wrap;
}
.ig-piece-qty-wrap {
	display: flex;
	flex-direction: column;
	gap: 10px;
}
.ig-piece-qty {
	display: inline-flex;
	align-items: stretch;
	background: var(--ig-paper);
	border: 1.5px solid var(--ig-ink-line);
	border-radius: var(--ig-r-md);
	overflow: hidden;
}
.ig-qty-btn {
	width: 38px;
	background: transparent;
	border: none;
	font-size: 18px;
	font-weight: 600;
	color: var(--ig-ink);
	cursor: pointer;
	transition: background var(--ig-t-fast);
}
.ig-qty-btn:hover { background: var(--ig-paper-2); }
.ig-qty-btn:focus-visible {
	outline: 2px solid var(--ig-brass);
	outline-offset: -2px;
}
.ig-piece-quantity {
	width: 56px;
	border: none;
	background: transparent;
	font-family: var(--ig-font-mono);
	font-size: 15px;
	font-weight: 600;
	text-align: center;
	color: var(--ig-ink);
	outline: none;
	border-left: 1.5px solid var(--ig-ink-line);
	border-right: 1.5px solid var(--ig-ink-line);
	-moz-appearance: textfield;
}
.ig-piece-quantity::-webkit-outer-spin-button,
.ig-piece-quantity::-webkit-inner-spin-button {
	-webkit-appearance: none;
	margin: 0;
}

.ig-piece-subtotal {
	display: flex;
	flex-direction: column;
	align-items: flex-end;
	gap: 4px;
	text-align: right;
}
.ig-piece-subtotal-label {
	font-family: var(--ig-font-mono);
	font-size: 10px;
	letter-spacing: 0.10em;
	text-transform: uppercase;
	color: var(--ig-text-subtle);
}
.ig-piece-subtotal-value {
	font-family: var(--ig-font);
	font-size: 22px;
	font-weight: 700;
	color: var(--ig-ink);
	letter-spacing: -0.015em;
}


/* ============================================================
   SUMMARY COLUMN (right)
   ============================================================ */
.ig-calc-summary {
	background: var(--ig-paper-2);
	border-radius: var(--ig-r-lg);
	padding: 32px;
	display: flex;
	flex-direction: column;
	gap: 14px;
	position: relative;
	height: fit-content;
	position: sticky;
	top: 100px; /* sticky below the 76px header */
}
.ig-calc-summary-eyebrow {
	position: absolute;
	top: -10px;
	left: 20px;
	background: var(--ig-paper-2);
	padding: 0 10px;
	font-family: var(--ig-font-mono);
	font-size: 10px;
	letter-spacing: 0.12em;
	color: var(--ig-text-subtle);
	font-weight: 500;
}

.ig-calc-summary-rows {
	display: flex;
	flex-direction: column;
	gap: 0;
}
.ig-sum-row {
	display: flex;
	justify-content: space-between;
	align-items: baseline;
	gap: 12px;
	padding: 10px 0;
	border-bottom: 1px dashed var(--ig-ink-line);
}
.ig-sum-row:last-child { border-bottom: none; }
.ig-sum-label {
	font-size: 13px;
	color: var(--ig-text-muted);
	flex: 1;
}
.ig-sum-value {
	font-family: var(--ig-font-mono);
	font-size: 14px;
	font-weight: 500;
	color: var(--ig-ink);
	white-space: nowrap;
}
.ig-sum-piece-header {
	font-family: var(--ig-font-mono);
	font-size: 10px;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: var(--ig-brass-deep);
	font-weight: 600;
	padding: 14px 0 6px;
	border-bottom: none !important;
}
.ig-sum-piece-header:first-child {
	padding-top: 4px;
}

.ig-calc-summary-total {
	display: flex;
	justify-content: space-between;
	align-items: baseline;
	margin-top: 8px;
	padding-top: 18px;
	border-top: 2px solid var(--ig-ink);
	gap: 12px;
}
.ig-calc-summary-total .ig-calc-sum-label {
	font-size: 16px;
	font-weight: 600;
	color: var(--ig-ink);
}
.ig-calc-summary-total .ig-calc-sum-value {
	font-family: var(--ig-font);
	font-size: 30px;
	font-weight: 700;
	letter-spacing: -0.02em;
	color: var(--ig-ink);
	white-space: nowrap;
}
.ig-calc-vat-note {
	font-family: var(--ig-font-mono);
	font-size: 10px;
	letter-spacing: 0.06em;
	color: var(--ig-text-subtle);
	margin-top: -6px;
	margin-bottom: 8px;
	text-align: right;
}

.ig-calc-summary .ig-btn { margin-top: 4px; }
.ig-calc-summary .ig-btn:first-of-type { margin-top: 10px; }

/* Status / errors below cart button */
.ig-calc-status {
	font-size: 13px;
	min-height: 1.2em;
	margin-top: 6px;
	color: var(--ig-text-muted);
	text-align: center;
}
.ig-calc-status.is-error { color: var(--ig-stat-poor); }
.ig-calc-status.is-success { color: var(--ig-stat-best); }


/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
	.ig-calc { padding: 70px 24px; }
	.ig-calc-card {
		grid-template-columns: 1fr;
		gap: 40px;
		padding: 36px;
	}
	.ig-calc-summary {
		position: static; /* stop sticking on tablet/mobile */
	}
}

@media (max-width: 640px) {
	.ig-calc { padding: 50px 16px; }
	.ig-calc-card {
		padding: 24px;
		border-radius: var(--ig-r-lg);
	}
	.ig-piece-foot {
		flex-direction: column;
		align-items: stretch;
		gap: 18px;
	}
	.ig-piece-subtotal {
		align-items: flex-start;
		text-align: left;
	}
	.ig-size-fields {
		grid-template-columns: 1fr;
	}
	.ig-piece-field-row {
		grid-template-columns: 1fr;
		gap: 0;
	}
	.ig-calc-summary { padding: 24px; }
	.ig-calc-summary-total .ig-calc-sum-value { font-size: 24px; }
}

/* Respect reduced-motion for the toggle knob + chip transitions */
@media (prefers-reduced-motion: reduce) {
	.ig-toggle-knob,
	.ig-opt,
	.ig-chip,
	.ig-add-piece-btn {
		transition: none !important;
	}
}