/**
 * MedSolutions LMS — MCQ Exam Engine (Phase 5)
 * Tokens from lms-tokens.css (--mslms-* / --sd-* aliases).
 */

.mslms-exam-engine {
	--ee-blue: var(--mslms-blue, var(--sd-blue, #0B4F87));
	--ee-navy: var(--mslms-navy, var(--sd-navy, #083D6B));
	--ee-green: var(--mslms-green, var(--sd-green, #0C9A46));
	--ee-ink: var(--mslms-ink, var(--sd-ink, #2C3E50));
	--ee-muted: var(--mslms-muted, var(--sd-muted, rgba(44, 62, 80, 0.72)));
	--ee-surface: var(--mslms-surface-solid, var(--sd-surface-solid, #fff));
	--ee-bg: var(--mslms-bg, var(--sd-bg, #F5F8FB));
	--ee-border: var(--mslms-border, var(--sd-border, rgba(11, 79, 135, 0.12)));
	--ee-shadow: var(--mslms-shadow-sm, var(--sd-shadow-sm, 0 10px 28px -18px rgba(11, 79, 135, 0.28)));
	--ee-radius: var(--mslms-radius, var(--sd-radius, 16px));
	--ee-radius-sm: var(--mslms-radius-sm, var(--sd-radius-sm, 12px));
	--ee-font-display: var(--mslms-font-display, var(--sd-font-display, 'Fraunces', Georgia, serif));
	--ee-font-body: var(--mslms-font-body, var(--sd-font-body, 'Inter', 'Segoe UI', system-ui, sans-serif));
	--ee-font-mono: var(--mslms-font-mono, var(--sd-font-mono, 'IBM Plex Mono', ui-monospace, monospace));
	--ee-warn: var(--mslms-warn, #c45c26);
	--ee-flag: var(--mslms-flag, #b8860b);

	font-family: var(--ee-font-body);
	color: var(--ee-ink);
	background:
		radial-gradient(1200px 480px at 10% -10%, rgba(11, 79, 135, 0.08), transparent 60%),
		radial-gradient(900px 400px at 100% 0%, rgba(12, 154, 70, 0.06), transparent 55%),
		var(--ee-bg);
	border: 1px solid var(--ee-border);
	border-radius: var(--ee-radius);
	padding: 24px;
	box-shadow: var(--ee-shadow);
}

.mslms-exam-engine .mono {
	font-family: var(--ee-font-mono);
}

.mslms-exam-engine__hero {
	margin-bottom: 28px;
}

.mslms-exam-engine__eyebrow {
	margin: 0 0 6px;
	font-size: 0.75rem;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--ee-blue);
	font-weight: 600;
}

.mslms-exam-engine__title {
	margin: 0 0 8px;
	font-family: var(--ee-font-display);
	font-size: clamp(1.6rem, 2.4vw, 2.1rem);
	font-weight: 600;
	color: var(--ee-navy);
	line-height: 1.2;
}

.mslms-exam-engine__course,
.mslms-exam-engine__instructions {
	color: var(--ee-muted);
	margin: 0 0 12px;
	font-size: 0.95rem;
}

.mslms-exam-engine__meta {
	display: flex;
	flex-wrap: wrap;
	gap: 12px 20px;
	list-style: none;
	margin: 16px 0 0;
	padding: 0;
}

.mslms-exam-engine__meta li {
	display: flex;
	flex-direction: column;
	gap: 2px;
	min-width: 100px;
	padding: 10px 14px;
	background: var(--ee-surface);
	border: 1px solid var(--ee-border);
	border-radius: var(--ee-radius-sm);
}

.mslms-exam-engine__meta strong {
	font-size: 0.72rem;
	text-transform: uppercase;
	letter-spacing: 0.04em;
	color: var(--ee-muted);
	font-weight: 600;
}

.mslms-exam-engine__setup {
	display: grid;
	gap: 22px;
	max-width: 640px;
}

.mslms-exam-engine__fieldset {
	border: 0;
	margin: 0;
	padding: 0;
	display: grid;
	gap: 8px;
}

.mslms-exam-engine__fieldset legend {
	font-weight: 600;
	margin-bottom: 8px;
	color: var(--ee-navy);
}

.mslms-exam-engine__topic {
	display: flex;
	align-items: flex-start;
	gap: 12px;
	padding: 12px 14px;
	border: 1px solid var(--ee-border);
	border-radius: var(--ee-radius-sm);
	background: var(--ee-surface);
	cursor: pointer;
	transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.mslms-exam-engine__topic:hover,
.mslms-exam-engine__topic--active {
	border-color: rgba(11, 79, 135, 0.35);
	box-shadow: 0 0 0 3px rgba(11, 79, 135, 0.08);
}

.mslms-exam-engine__topic input {
	margin-top: 4px;
	accent-color: var(--ee-blue);
}

.mslms-exam-engine__topic-label {
	display: flex;
	flex-direction: column;
	gap: 2px;
}

.mslms-exam-engine__topic-label em {
	font-style: normal;
	font-size: 0.85rem;
	color: var(--ee-muted);
}

.mslms-exam-engine__slider-wrap label {
	display: flex;
	justify-content: space-between;
	align-items: baseline;
	margin-bottom: 8px;
	font-weight: 600;
	color: var(--ee-navy);
}

.mslms-exam-engine__slider {
	width: 100%;
	accent-color: var(--ee-blue);
}

.mslms-exam-engine__slider-ends {
	display: flex;
	justify-content: space-between;
	font-size: 0.8rem;
	color: var(--ee-muted);
	margin-top: 4px;
}

.mslms-exam-engine__start-actions {
	display: flex;
	flex-wrap: wrap;
	gap: 10px;
}

.mslms-exam-engine__message {
	min-height: 1.25em;
	margin: 8px 0 0;
	font-size: 0.9rem;
}

.mslms-exam-engine__message.is-error {
	color: #b42318;
}

.mslms-exam-engine__message.is-success {
	color: var(--ee-green);
}

/* Active exam */
.mslms-exam-engine__toolbar {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 12px 20px;
	margin-bottom: 18px;
	padding-bottom: 14px;
	border-bottom: 1px solid var(--ee-border);
}

.mslms-exam-engine__progress {
	font-size: 0.95rem;
	font-weight: 600;
	color: var(--ee-navy);
}

.mslms-exam-engine__timer {
	flex: 1;
	min-width: 180px;
	max-width: 360px;
}

.mslms-exam-engine__autosave {
	margin: 0;
	font-size: 0.75rem;
	color: var(--ee-muted);
	margin-left: auto;
}

.mslms-exam-engine__layout {
	display: grid;
	grid-template-columns: 200px minmax(0, 1fr);
	gap: 20px;
	align-items: start;
}

.mslms-exam-engine__palette {
	background: var(--ee-surface);
	border: 1px solid var(--ee-border);
	border-radius: var(--ee-radius-sm);
	padding: 14px;
	position: sticky;
	top: 16px;
}

.mslms-exam-engine__palette-title {
	margin: 0 0 10px;
	font-size: 0.8rem;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.04em;
	color: var(--ee-muted);
}

.mslms-exam-engine__palette-grid {
	display: grid;
	grid-template-columns: repeat(5, 1fr);
	gap: 6px;
}

.mslms-exam-engine__palette-btn {
	appearance: none;
	border: 1px solid var(--ee-border);
	background: #fff;
	border-radius: 8px;
	height: 32px;
	font-family: var(--ee-font-mono);
	font-size: 0.75rem;
	cursor: pointer;
	color: var(--ee-ink);
	transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.mslms-exam-engine__palette-btn:hover {
	border-color: var(--ee-blue);
}

.mslms-exam-engine__palette-btn.is-answered {
	background: rgba(12, 154, 70, 0.12);
	border-color: rgba(12, 154, 70, 0.35);
	color: var(--ee-green);
}

.mslms-exam-engine__palette-btn.is-flagged {
	box-shadow: inset 0 -3px 0 var(--ee-flag);
}

.mslms-exam-engine__palette-btn.is-current {
	background: var(--ee-blue);
	border-color: var(--ee-blue);
	color: #fff;
}

.mslms-exam-engine__palette-btn.is-correct:not(.is-current) {
	background: rgba(12, 154, 70, 0.18);
	border-color: rgba(12, 154, 70, 0.55);
	color: var(--ee-green);
}

.mslms-exam-engine__palette-btn.is-incorrect:not(.is-current) {
	background: rgba(196, 92, 38, 0.14);
	border-color: rgba(196, 92, 38, 0.5);
	color: var(--ee-warn);
}

.mslms-exam-engine__dot--correct {
	background: rgba(12, 154, 70, 0.55);
	border-color: rgba(12, 154, 70, 0.65);
}

.mslms-exam-engine__dot--incorrect {
	background: rgba(196, 92, 38, 0.55);
	border-color: rgba(196, 92, 38, 0.65);
}

.mslms-exam-engine__option.is-correct {
	border-color: rgba(12, 154, 70, 0.55);
	background: rgba(12, 154, 70, 0.08);
	box-shadow: 0 0 0 3px rgba(12, 154, 70, 0.1);
}

.mslms-exam-engine__option.is-incorrect {
	border-color: rgba(196, 92, 38, 0.55);
	background: rgba(196, 92, 38, 0.08);
	box-shadow: 0 0 0 3px rgba(196, 92, 38, 0.1);
}

.mslms-exam-engine__option input:disabled {
	cursor: default;
}

.mslms-exam-engine__feedback {
	margin-top: 16px;
	padding: 12px 14px;
	border-radius: var(--ee-radius-sm);
	font-size: 0.92rem;
	line-height: 1.45;
}

.mslms-exam-engine__feedback-answer {
	display: inline-block;
	margin-left: 4px;
	opacity: 0.9;
}

.mslms-exam-engine__feedback-exp {
	margin-top: 8px;
}

.mslms-exam-engine__mode-chip {
	margin: 0;
	font-size: 0.75rem;
	padding: 4px 10px;
	border-radius: 999px;
	background: rgba(11, 79, 135, 0.08);
	color: var(--ee-blue);
}

.mslms-exam-engine__legend {
	list-style: none;
	margin: 12px 0 0;
	padding: 0;
	display: grid;
	gap: 6px;
	font-size: 0.75rem;
	color: var(--ee-muted);
}

.mslms-exam-engine__legend li {
	display: flex;
	align-items: center;
	gap: 8px;
}

.mslms-exam-engine__dot {
	width: 10px;
	height: 10px;
	border-radius: 2px;
	border: 1px solid var(--ee-border);
	background: #fff;
	flex-shrink: 0;
}

.mslms-exam-engine__dot--answered {
	background: rgba(12, 154, 70, 0.35);
	border-color: rgba(12, 154, 70, 0.45);
}

.mslms-exam-engine__dot--flagged {
	box-shadow: inset 0 -3px 0 var(--ee-flag);
}

.mslms-exam-engine__dot--current {
	background: var(--ee-blue);
	border-color: var(--ee-blue);
}

.mslms-exam-engine__card {
	background: var(--ee-surface);
	border: 1px solid var(--ee-border);
	border-radius: var(--ee-radius);
	padding: 22px 24px 26px;
	box-shadow: var(--ee-shadow);
	min-height: 280px;
	animation: mslms-ee-fade 0.28s ease;
}

@keyframes mslms-ee-fade {
	from { opacity: 0; transform: translateY(6px); }
	to { opacity: 1; transform: translateY(0); }
}

.mslms-exam-engine__card-top {
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 12px;
	margin-bottom: 16px;
}

.mslms-exam-engine__topic-chip {
	margin: 0;
	font-size: 0.75rem;
	padding: 4px 10px;
	border-radius: 999px;
	background: rgba(11, 79, 135, 0.08);
	color: var(--ee-blue);
}

.mslms-exam-engine__flag {
	appearance: none;
	border: 1px solid var(--ee-border);
	background: transparent;
	border-radius: 999px;
	padding: 6px 12px;
	font-size: 0.8rem;
	cursor: pointer;
	color: var(--ee-muted);
	transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.mslms-exam-engine__flag.is-active {
	background: rgba(184, 134, 11, 0.12);
	border-color: rgba(184, 134, 11, 0.4);
	color: #8a6500;
	font-weight: 600;
}

.mslms-exam-engine__question {
	font-size: 1.1rem;
	line-height: 1.55;
	font-weight: 500;
	color: var(--ee-navy);
	margin-bottom: 18px;
}

.mslms-exam-engine__options {
	display: grid;
	gap: 10px;
}

.mslms-exam-engine__option {
	display: flex;
	align-items: flex-start;
	gap: 12px;
	padding: 14px 16px;
	border: 1px solid var(--ee-border);
	border-radius: var(--ee-radius-sm);
	background: #fff;
	cursor: pointer;
	transition: border-color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
}

.mslms-exam-engine__option:hover {
	border-color: rgba(11, 79, 135, 0.35);
}

.mslms-exam-engine__option.is-selected {
	border-color: var(--ee-blue);
	background: rgba(11, 79, 135, 0.06);
	box-shadow: 0 0 0 3px rgba(11, 79, 135, 0.08);
}

.mslms-exam-engine__option input {
	margin-top: 3px;
	accent-color: var(--ee-blue);
}

.mslms-exam-engine__option-letter {
	font-family: var(--ee-font-mono);
	font-weight: 600;
	color: var(--ee-blue);
	min-width: 1.2em;
}

.mslms-exam-engine__nav {
	display: flex;
	flex-wrap: wrap;
	gap: 10px;
	margin-top: 18px;
	align-items: center;
}

.mslms-exam-engine__nav .mslms-mock-exam-submit {
	margin-left: auto;
}

/* Results */
.mslms-exam-engine__results .mslms-mock-exam-results,
.mslms-exam-engine-results {
	padding: 8px 0;
}

.mslms-exam-engine-results__score {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 16px 24px;
	padding: 20px 22px;
	border-radius: var(--ee-radius);
	margin-bottom: 22px;
	border: 1px solid var(--ee-border);
	background: var(--ee-surface);
}

.mslms-exam-engine-results__score--passed {
	border-color: rgba(12, 154, 70, 0.3);
	background: linear-gradient(135deg, rgba(12, 154, 70, 0.08), rgba(255, 255, 255, 0.9));
}

.mslms-exam-engine-results__score--failed {
	border-color: rgba(196, 92, 38, 0.3);
	background: linear-gradient(135deg, rgba(196, 92, 38, 0.08), rgba(255, 255, 255, 0.9));
}

.mslms-exam-engine-results__percent {
	font-family: var(--ee-font-display);
	font-size: 2.6rem;
	font-weight: 600;
	line-height: 1;
	color: var(--ee-navy);
}

.mslms-exam-engine-results__detail {
	display: flex;
	flex-direction: column;
	gap: 4px;
	color: var(--ee-muted);
}

.mslms-exam-engine-results__threshold {
	font-size: 0.85rem;
}

.mslms-exam-engine-results__section {
	margin-bottom: 24px;
}

.mslms-exam-engine-results__section h4 {
	margin: 0 0 12px;
	font-family: var(--ee-font-display);
	font-size: 1.15rem;
	color: var(--ee-navy);
}

.mslms-exam-engine-results__topics {
	display: grid;
	gap: 10px;
}

.mslms-exam-engine-results__topic {
	display: grid;
	grid-template-columns: minmax(0, 1fr) auto;
	gap: 8px 16px;
	align-items: center;
	padding: 12px 14px;
	background: var(--ee-surface);
	border: 1px solid var(--ee-border);
	border-radius: var(--ee-radius-sm);
}

.mslms-exam-engine-results__topic.is-weak {
	border-color: rgba(196, 92, 38, 0.35);
	background: rgba(196, 92, 38, 0.05);
}

.mslms-exam-engine-results__topic-bar {
	grid-column: 1 / -1;
	height: 6px;
	background: rgba(11, 79, 135, 0.1);
	border-radius: 999px;
	overflow: hidden;
}

.mslms-exam-engine-results__topic-fill {
	height: 100%;
	background: var(--ee-green);
	border-radius: inherit;
}

.mslms-exam-engine-results__topic.is-weak .mslms-exam-engine-results__topic-fill {
	background: var(--ee-warn);
}

.mslms-exam-engine-results__weak-list {
	margin: 0;
	padding-left: 1.2em;
	color: var(--ee-warn);
}

.mslms-exam-engine-results__actions {
	display: flex;
	flex-wrap: wrap;
	gap: 10px;
	margin-top: 8px;
}

@media (max-width: 860px) {
	.mslms-exam-engine__layout {
		grid-template-columns: 1fr;
	}

	.mslms-exam-engine__palette {
		position: static;
		order: 2;
	}

	.mslms-exam-engine__form {
		order: 1;
	}

	.mslms-exam-engine__palette-grid {
		grid-template-columns: repeat(8, 1fr);
	}

	.mslms-exam-engine__nav .mslms-mock-exam-submit {
		margin-left: 0;
		width: 100%;
	}
}

@media (max-width: 520px) {
	.mslms-exam-engine {
		padding: 16px;
	}

	.mslms-exam-engine__palette-grid {
		grid-template-columns: repeat(5, 1fr);
	}

	.mslms-exam-engine__card {
		padding: 16px;
	}
}