/*
 * FAQ — single strict panel accordion (Dark Enterprise / Industrial
 * Premium), not generic rounded FAQ cards. Titanium micro-accent on
 * active number/control/hover only, per DESIGN.md §7.
 */

.faq {
	position: relative;
	background: var(--ark-bg-800);
	padding-block: var(--ark-space-section-lg);
}

.faq__inner {
	display: grid;
	grid-template-columns: 0.85fr 1fr;
	column-gap: 80px;
	align-items: start;
}

.faq__intro {
	position: sticky;
	top: 120px;
}

.faq__overline {
	font-size: 0.8rem;
	font-weight: 700;
	letter-spacing: 0.16em;
	color: var(--ark-text-secondary);
	margin: 0 0 16px;
}

.faq__title {
	font-size: clamp(1.9rem, 1.5rem + 1.2vw, 2.7rem);
	font-weight: 600;
	line-height: 1.18;
	color: var(--ark-text-primary);
	margin: 0 0 18px;
	max-width: 420px;
}

.faq__title-line {
	display: block;
}

.faq__lead {
	max-width: 480px;
	font-size: 1.05rem;
	color: var(--ark-text-secondary);
	margin: 0;
	text-wrap: balance;
}

.faq__panel {
	border-top: 1px solid var(--ark-border-soft);
}

.faq__item {
	border-bottom: 1px solid var(--ark-border-soft);
}

.faq__item-heading {
	margin: 0;
}

.faq__trigger {
	display: grid;
	grid-template-columns: 48px 1fr 44px;
	align-items: center;
	column-gap: 20px;
	width: 100%;
	min-height: 44px;
	padding-block: 28px;
	background: none;
	border: 0;
	text-align: left;
	cursor: pointer;
	font: inherit;
	color: var(--ark-text-primary);
}

.faq__trigger:focus-visible {
	outline: 2px solid var(--ark-border-titanium);
	outline-offset: 4px;
}

.faq__number {
	font-family: var(--ark-font-display);
	font-size: 1.25rem;
	font-weight: 600;
	color: var(--ark-text-muted);
	transition: color 200ms var(--ark-ease);
}

.faq__item[data-faq-open] .faq__number {
	color: var(--ark-border-titanium);
}

.faq__question {
	font-size: 1.05rem;
	font-weight: 600;
	line-height: 1.4;
}

.faq__control {
	position: relative;
	justify-self: end;
	width: 44px;
	height: 44px;
	flex-shrink: 0;
}

.faq__control-line {
	position: absolute;
	top: 50%;
	left: 50%;
	background: var(--ark-text-secondary);
	transform: translate(-50%, -50%);
	transition: transform 200ms var(--ark-ease), background 200ms var(--ark-ease);
}

.faq__control-line--h {
	width: 14px;
	height: 1px;
}

.faq__control-line--v {
	width: 1px;
	height: 14px;
}

.faq__trigger:hover .faq__control-line,
.faq__trigger:focus-visible .faq__control-line {
	background: var(--ark-border-titanium);
}

.faq__item[data-faq-open] .faq__control-line--v {
	transform: translate(-50%, -50%) rotate(90deg) scale(0);
}

.faq__item[data-faq-open] .faq__control-line--h {
	background: var(--ark-border-titanium);
}

.faq__answer {
	overflow: hidden;
	padding-bottom: 28px;
	margin-left: 68px;
}

.faq__answer[hidden] {
	display: none;
}

.faq__answer-text {
	max-width: 620px;
	font-size: 0.98rem;
	line-height: 1.6;
	color: var(--ark-text-secondary);
	margin: 0;
}

.faq__answer-text p {
	margin: 0 0 1em;
}

.faq__answer-text p:last-child {
	margin-bottom: 0;
}

@media (max-width: 1024px) {
	.faq__inner {
		grid-template-columns: 1fr;
		row-gap: 40px;
	}

	.faq__intro {
		position: static;
	}

	.faq__title {
		max-width: none;
	}

	.faq__lead {
		max-width: 620px;
	}
}

@media (max-width: 640px) {
	.faq__trigger {
		grid-template-columns: 32px 1fr 44px;
		column-gap: 12px;
		padding-block: 22px;
	}

	.faq__question {
		font-size: 1rem;
	}

	.faq__answer {
		margin-left: 44px;
	}
}