/**
 * Classic quiz template styles — all questions on one scrollable page.
 *
 * Uses exclusively --lrn-* design tokens from learnomy.css.
 * No hardcoded colors, sizes, or font families.
 *
 * @package Learnomy
 */

/* ==========================================================================
   Sticky top bar
   ========================================================================== */

.lrn-quiz-classic__top-bar {
	position: sticky;
	top: 0;
	z-index: 10;
	display: flex;
	flex-direction: column;
	gap: var(--lrn-sp-3);
	padding: var(--lrn-sp-3) var(--lrn-sp-4);
	background: var(--lrn-bg);
	background: color-mix(in srgb, var(--lrn-bg) 85%, transparent);
	-webkit-backdrop-filter: blur(12px);
	backdrop-filter: blur(12px);
	border-bottom: 1px solid var(--lrn-border);
	border-radius: var(--lrn-radius-lg) var(--lrn-radius-lg) 0 0;
}

/* Row 1 — answered count + timer */
.lrn-quiz-classic__top-bar-row {
	display: flex;
	align-items: center;
	gap: var(--lrn-sp-4);
}

.lrn-quiz-classic__answered-count {
	font-size: var(--lrn-text-sm);
	font-weight: var(--lrn-weight-medium);
	color: var(--lrn-text-secondary);
	white-space: nowrap;
}

.lrn-quiz-classic__top-bar-row .lrn-quiz__timer {
	margin-inline-start: auto;
}

/* Row 2 — category jump-nav (A2). Lives inside the sticky top bar so the
   chips stay reachable while scrolling a long grouped quiz. */
.lrn-quiz-classic__cat-nav {
	display: flex;
	flex-wrap: wrap;
	gap: var(--lrn-sp-2);
}

/* [hidden] must beat display:flex when grouping is off. */
.lrn-quiz-classic__cat-nav[hidden] {
	display: none;
}

.lrn-quiz-classic__cat-chip {
	display: inline-flex;
	align-items: baseline;
	gap: var(--lrn-sp-2);
	padding: var(--lrn-sp-1) var(--lrn-sp-3);
	border: 1px solid var(--lrn-border);
	border-radius: var(--lrn-radius-pill);
	background: var(--lrn-bg);
	color: var(--lrn-text-secondary);
	font-size: var(--lrn-text-xs);
	font-weight: var(--lrn-weight-medium);
	cursor: pointer;
	transition: background-color var(--lrn-dur) var(--lrn-ease),
	            border-color var(--lrn-dur) var(--lrn-ease),
	            color var(--lrn-dur) var(--lrn-ease);
}

.lrn-quiz-classic__cat-chip:hover {
	border-color: var(--lrn-accent);
	color: var(--lrn-text);
	background: color-mix(in srgb, var(--lrn-accent) 8%, transparent);
}

.lrn-quiz-classic__cat-chip-name {
	text-transform: uppercase;
	letter-spacing: .03em;
}

.lrn-quiz-classic__cat-chip-count {
	color: var(--lrn-text-tertiary);
	font-variant-numeric: tabular-nums;
}

/* ==========================================================================
   Question cards — stacked vertically
   ========================================================================== */

.lrn-quiz-classic__questions {
	display: flex;
	flex-direction: column;
	gap: var(--lrn-sp-1);
}

/* A2: each question is wrapped in a group-item so a category heading can sit
   above the first question of each category run. The wrapper is layout-neutral
   (contents flow as before). */
.lrn-quiz-classic__group-item {
	display: contents;
}

/* No border-bottom: the category jump-nav chips + the uppercase label + each
   card's left accent bar already establish the grouping. An underline here sat
   right under the sticky top-bar's own border on the first heading, reading as
   a double border. The label + spacing alone is calmer and still clearly a
   section header. */
.lrn-quiz-classic__category-heading {
	margin: var(--lrn-sp-5) 0 var(--lrn-sp-3);
	font-size: var(--lrn-text-sm);
	font-weight: var(--lrn-weight-semibold);
	text-transform: uppercase;
	letter-spacing: .03em;
	color: var(--lrn-text-secondary);

	/* Clear the two-row sticky top bar when jumped to from the jump-nav. */
	scroll-margin-top: 104px;
}
/* First heading: a little breathing room from the sticky bar, not flush. */
.lrn-quiz-classic__group-item:first-child .lrn-quiz-classic__category-heading {
	margin-block-start: var(--lrn-sp-3);
}

.lrn-quiz-classic__question-card {
	position: relative;
	padding: var(--lrn-sp-6);
	border-inline-start: 3px solid var(--lrn-accent-bg);
	background: var(--lrn-bg);
	border-bottom: 1px solid var(--lrn-divider);
	transition: border-color var(--lrn-dur) var(--lrn-ease),
	            background-color var(--lrn-dur) var(--lrn-ease);

	/* Account for sticky bar when scrolling via anchor or scrollIntoView */
	scroll-margin-top: 72px;
}

/* Unanswered — neutral "to-do" border. (Was a solid accent/red bar on every
   card, which reads as an error state when the whole quiz is unanswered at the
   start; neutral -> success green as the learner answers is calmer + premium.) */
.lrn-quiz-classic__question-card:not(.lrn-quiz-classic__question-card--answered) {
	border-inline-start-color: var(--lrn-border);
}

/* Answered — subtle success border */
.lrn-quiz-classic__question-card--answered {
	border-inline-start-color: var(--lrn-success);
}

/* Highlight animation when "Jump to first" is used */
.lrn-quiz-classic__question-card--highlight {
	background: var(--lrn-accent-bg);
	transition: background-color 300ms var(--lrn-ease);
}

/* Question header row: number + answered badge */
.lrn-quiz-classic__question-header {
	display: flex;
	align-items: center;
	gap: var(--lrn-sp-2);
	margin-bottom: var(--lrn-sp-2);
}

.lrn-quiz-classic__question-number {
	font-size: var(--lrn-text-xs);
	font-weight: var(--lrn-weight-semibold);
	color: var(--lrn-text-tertiary);
	text-transform: uppercase;
	letter-spacing: 0.05em;
}

.lrn-quiz-classic__answered-badge {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: var(--lrn-sp-5);
	height: var(--lrn-sp-5);
	color: var(--lrn-success);
}

.lrn-quiz-classic__answered-badge svg,
.lrn-quiz-classic__answered-badge i {
	width: var(--lrn-sp-4);
	height: var(--lrn-sp-4);
}

/* ==========================================================================
   Bottom bar — unanswered notice + submit
   ========================================================================== */

.lrn-quiz-classic__bottom-bar {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: var(--lrn-sp-4);
	padding: var(--lrn-sp-8) var(--lrn-sp-4);
	border-top: 1px solid var(--lrn-border);
}

.lrn-quiz-classic__unanswered-notice {
	display: flex;
	align-items: center;
	gap: var(--lrn-sp-2);
	font-size: var(--lrn-text-sm);
	color: var(--lrn-warn);
	margin: 0;
}

.lrn-quiz-classic__unanswered-notice svg,
.lrn-quiz-classic__unanswered-notice i {
	width: var(--lrn-sp-4);
	height: var(--lrn-sp-4);
	flex-shrink: 0;
}

.lrn-quiz-classic__submit-bottom {
	min-width: 200px;
}

/* ==========================================================================
   Responsive: mobile adjustments
   ========================================================================== */

@media (max-width: 768px) {
	.lrn-quiz-classic__top-bar {
		padding: var(--lrn-sp-2) var(--lrn-sp-3);
		gap: var(--lrn-sp-2);
	}

	.lrn-quiz-classic__question-card {
		padding: var(--lrn-sp-4) var(--lrn-sp-3);
		scroll-margin-top: 56px;
	}

	.lrn-quiz-classic__category-heading {
		scroll-margin-top: 96px;
	}

	.lrn-quiz-classic__submit-bottom {
		width: 100%;
	}
}

@media (max-width: 640px) {
	/* Collapse top bar to minimal: count + submit only, timer below */
	.lrn-quiz-classic__top-bar {
		flex-wrap: wrap;
	}

	.lrn-quiz-classic__top-bar .lrn-quiz__timer {
		order: 3;
		width: 100%;
		text-align: center;
		margin-inline-start: 0;
		font-size: var(--lrn-text-xs);
	}

	.lrn-quiz-classic__answered-count {
		flex: 1;
	}
}

/* Small phones — plan-02 phase D */
@media (max-width: 640px) {
	.lrn-quiz-classic__card,
	.lrn-quiz-classic__question {
		padding: var(--lrn-sp-3);
	}

	.lrn-quiz-classic__timer {
		font-size: var(--lrn-text-sm);
	}

	.lrn-quiz-classic__nav {
		flex-direction: column;
		gap: var(--lrn-sp-2);
	}

	.lrn-quiz-classic__nav .lrn-btn {
		width: 100%;
		justify-content: center;
	}
}