/**
 * Lumination Quiz Generator — Front-end Styles
 *
 * CSS prefix: lqg-  (Lumination Quiz Generator)
 * Matches the visual language of Lumination Summarizer.
 *
 * @package LuminationQuizGenerator
 * @since   1.0.0
 */

/* ── Variables & wrapper ─────────────────────────────────────────────────── */

.lqg-quiz {
	--lqg-primary: #6C5CE7;
	--lqg-primary-hover: #5a4bd5;
	--lqg-primary-light: rgba(108, 92, 231, 0.08);
	--lqg-primary-glow: rgba(108, 92, 231, 0.15);
	--lqg-btn-text: #fff;
	--lqg-bg: #ffffff;
	--lqg-text: #1a1a2e;
	--lqg-radius: 16px;
	--lqg-border: #e8e5f0;
	--lqg-muted: #8b85a1;
	--lqg-light-bg: #f5f3ff;
	--lqg-surface: #faf9fe;
	--lqg-correct: #27ae60;
	--lqg-correct-bg: rgba(39, 174, 96, 0.08);
	--lqg-incorrect: #e74c3c;
	--lqg-incorrect-bg: rgba(231, 76, 60, 0.08);

	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
		Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
	background: linear-gradient(135deg, var(--lqg-surface) 0%, var(--lqg-bg) 100%);
	color: var(--lqg-text);
	border: 1px solid var(--lqg-border);
	border-radius: var(--lqg-radius);
	padding: 2rem;
	max-width: 720px;
	margin: 2rem auto;
	box-sizing: border-box;
	box-shadow: 0 4px 24px rgba(108, 92, 231, 0.06), 0 1px 4px rgba(0, 0, 0, 0.04);
}

.lqg-quiz *,
.lqg-quiz *::before,
.lqg-quiz *::after {
	box-sizing: border-box;
}

/* ── Utility ─────────────────────────────────────────────────────────────── */

.lqg-hidden {
	display: none !important;
}

/* ── Header ──────────────────────────────────────────────────────────────── */

.lqg-header {
	margin-bottom: 1.5rem;
	text-align: center;
}

.lqg-title {
	font-size: 1.5rem;
	font-weight: 700;
	margin: 0 0 0.375rem;
	color: var(--lqg-text);
	letter-spacing: -0.01em;
}

.lqg-description {
	font-size: 0.95rem;
	color: var(--lqg-muted);
	margin: 0;
	line-height: 1.5;
}

/* ── Tabs ─────────────────────────────────────────────────────────────────── */

.lqg-tabs {
	display: flex;
	gap: 0;
	margin-bottom: 1.25rem;
	background: var(--lqg-light-bg);
	border-radius: 10px;
	padding: 4px;
}

.lqg-tab {
	flex: 1;
	padding: 0.5rem 1rem;
	border: none;
	background: transparent;
	color: var(--lqg-muted);
	font-size: 0.875rem;
	font-weight: 500;
	cursor: pointer;
	border-radius: 8px;
	transition: all 0.2s ease;
}

.lqg-tab--active {
	background: var(--lqg-bg);
	color: var(--lqg-text);
	box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

/* ── Input panels ────────────────────────────────────────────────────────── */

.lqg-url-input,
.lqg-text-input {
	width: 100%;
	padding: 0.75rem 1rem;
	border: 1px solid var(--lqg-border);
	border-radius: 10px;
	font-size: 0.9375rem;
	color: var(--lqg-text);
	background: var(--lqg-bg);
	transition: border-color 0.2s ease, box-shadow 0.2s ease;
	font-family: inherit;
}

.lqg-url-input:focus,
.lqg-text-input:focus {
	outline: none;
	border-color: var(--lqg-primary);
	box-shadow: 0 0 0 3px var(--lqg-primary-glow);
}

.lqg-text-input {
	resize: vertical;
	min-height: 120px;
}

/* ── Drop zone ───────────────────────────────────────────────────────────── */

.lqg-drop-zone {
	border: 2px dashed var(--lqg-border);
	border-radius: 12px;
	padding: 2rem;
	text-align: center;
	cursor: pointer;
	transition: border-color 0.2s ease, background 0.2s ease;
}

.lqg-drop-zone:hover,
.lqg-drop-zone--active {
	border-color: var(--lqg-primary);
	background: var(--lqg-primary-light);
}

.lqg-drop-icon {
	color: var(--lqg-muted);
	margin-bottom: 0.5rem;
}

.lqg-drop-text {
	color: var(--lqg-muted);
	font-size: 0.9rem;
	margin: 0;
}

.lqg-file-name {
	font-size: 0.85rem;
	color: var(--lqg-primary);
	margin-top: 0.5rem;
	font-weight: 500;
}

/* ── Options row ─────────────────────────────────────────────────────────── */

.lqg-options {
	display: flex;
	flex-wrap: wrap;
	gap: 1.25rem;
	margin-top: 1.25rem;
	padding-top: 1.25rem;
	border-top: 1px solid var(--lqg-border);
}

.lqg-option-group {
	display: flex;
	align-items: center;
	gap: 0.5rem;
	flex-wrap: wrap;
}

.lqg-option-label {
	font-size: 0.8125rem;
	font-weight: 600;
	color: var(--lqg-muted);
	text-transform: uppercase;
	letter-spacing: 0.04em;
	white-space: nowrap;
}

/* ── Pills ───────────────────────────────────────────────────────────────── */

.lqg-pill-group {
	display: flex;
	gap: 0;
	background: var(--lqg-light-bg);
	border-radius: 8px;
	padding: 3px;
}

.lqg-pill {
	padding: 0.375rem 0.75rem;
	border: none;
	background: transparent;
	color: var(--lqg-muted);
	font-size: 0.8125rem;
	font-weight: 500;
	cursor: pointer;
	border-radius: 6px;
	transition: all 0.2s ease;
	white-space: nowrap;
}

.lqg-pill--active {
	background: var(--lqg-bg);
	color: var(--lqg-text);
	box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
}

/* ── Slider ──────────────────────────────────────────────────────────────── */

.lqg-count-slider {
	width: 120px;
	accent-color: var(--lqg-primary);
}

.lqg-count-value {
	font-size: 0.9rem;
	font-weight: 600;
	color: var(--lqg-primary);
	min-width: 2ch;
	text-align: center;
}

/* ── Submit ───────────────────────────────────────────────────────────────── */

.lqg-submit-section {
	margin-top: 1.5rem;
}

.lqg-submit-btn {
	width: 100%;
	padding: 0.75rem 1.5rem;
	background: var(--lqg-primary);
	color: var(--lqg-btn-text);
	border: none;
	border-radius: 10px;
	font-size: 1rem;
	font-weight: 600;
	cursor: pointer;
	transition: background 0.2s ease, transform 0.1s ease;
}

.lqg-submit-btn:hover:not(:disabled) {
	background: var(--lqg-primary-hover);
	transform: translateY(-1px);
}

.lqg-submit-btn:disabled {
	opacity: 0.5;
	cursor: not-allowed;
}

/* ── Loading ─────────────────────────────────────────────────────────────── */

.lqg-loading {
	text-align: center;
	padding: 3rem 1rem;
}

.lqg-spinner {
	width: 40px;
	height: 40px;
	border: 3px solid var(--lqg-border);
	border-top-color: var(--lqg-primary);
	border-radius: 50%;
	margin: 0 auto 1rem;
	animation: lqg-spin 0.8s linear infinite;
}

@keyframes lqg-spin {
	to { transform: rotate(360deg); }
}

.lqg-loading-text {
	font-size: 0.95rem;
	color: var(--lqg-muted);
	margin: 0 0 1rem;
}

.lqg-progress-bar {
	height: 6px;
	background: var(--lqg-light-bg);
	border-radius: 3px;
	overflow: hidden;
	max-width: 300px;
	margin: 0 auto;
}

.lqg-progress-fill {
	height: 100%;
	background: var(--lqg-primary);
	border-radius: 3px;
	transition: width 0.5s ease;
	width: 0;
}

/* ── Quiz Phase ──────────────────────────────────────────────────────────── */

.lqg-quiz-header {
	display: flex;
	justify-content: space-between;
	align-items: center;
	margin-bottom: 1.5rem;
	gap: 1rem;
}

.lqg-quiz-progress {
	flex: 1;
}

.lqg-question-counter {
	font-size: 0.8125rem;
	font-weight: 600;
	color: var(--lqg-muted);
	text-transform: uppercase;
	letter-spacing: 0.04em;
	margin-bottom: 0.5rem;
	display: block;
}

.lqg-quiz-progress-bar {
	height: 4px;
	background: var(--lqg-light-bg);
	border-radius: 2px;
	overflow: hidden;
}

.lqg-quiz-progress-fill {
	height: 100%;
	background: var(--lqg-primary);
	border-radius: 2px;
	transition: width 0.3s ease;
}

/* ── Timer ────────────────────────────────────────────────────────────────── */

.lqg-timer-display {
	display: flex;
	align-items: center;
	gap: 0.375rem;
	font-size: 0.9rem;
	font-weight: 600;
	color: var(--lqg-muted);
	white-space: nowrap;
}

.lqg-timer--warning {
	color: var(--lqg-incorrect);
}

/* ── Question ────────────────────────────────────────────────────────────── */

.lqg-category-label {
	font-size: 0.75rem;
	font-weight: 600;
	color: var(--lqg-primary);
	text-transform: uppercase;
	letter-spacing: 0.05em;
	margin: 0 0 0.5rem;
}

.lqg-question-text {
	font-size: 1.1rem;
	font-weight: 600;
	line-height: 1.5;
	margin: 0 0 1.25rem;
	color: var(--lqg-text);
}

/* ── Answer Options ──────────────────────────────────────────────────────── */

.lqg-options-list {
	display: flex;
	flex-direction: column;
	gap: 0.625rem;
}

.lqg-option-btn {
	display: flex;
	align-items: center;
	gap: 0.75rem;
	width: 100%;
	padding: 0.875rem 1rem;
	border: 1px solid var(--lqg-border);
	border-radius: 10px;
	background: var(--lqg-bg);
	color: var(--lqg-text);
	font-size: 0.9375rem;
	text-align: left;
	cursor: pointer;
	transition: all 0.2s ease;
}

.lqg-option-btn:hover:not(.lqg-option-btn--disabled) {
	border-color: var(--lqg-primary);
	background: var(--lqg-primary-light);
}

.lqg-option-letter {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 28px;
	height: 28px;
	border-radius: 8px;
	background: var(--lqg-light-bg);
	font-weight: 700;
	font-size: 0.8125rem;
	color: var(--lqg-muted);
	flex-shrink: 0;
}

.lqg-option-text {
	flex: 1;
	line-height: 1.4;
}

.lqg-option-btn--disabled {
	cursor: default;
	opacity: 0.85;
}

.lqg-option-btn--correct {
	border-color: var(--lqg-correct) !important;
	background: var(--lqg-correct-bg) !important;
}

.lqg-option-btn--correct .lqg-option-letter {
	background: var(--lqg-correct);
	color: #fff;
}

.lqg-option-btn--incorrect {
	border-color: var(--lqg-incorrect) !important;
	background: var(--lqg-incorrect-bg) !important;
}

.lqg-option-btn--incorrect .lqg-option-letter {
	background: var(--lqg-incorrect);
	color: #fff;
}

/* ── Hint ─────────────────────────────────────────────────────────────────── */

.lqg-hint {
	margin-top: 1rem;
}

.lqg-hint-btn {
	background: none;
	border: none;
	color: var(--lqg-primary);
	font-size: 0.85rem;
	font-weight: 500;
	cursor: pointer;
	padding: 0;
	text-decoration: underline;
}

.lqg-hint-text {
	margin: 0.5rem 0 0;
	padding: 0.75rem 1rem;
	background: var(--lqg-light-bg);
	border-radius: 8px;
	font-size: 0.875rem;
	color: var(--lqg-muted);
	line-height: 1.5;
}

/* ── Feedback ────────────────────────────────────────────────────────────── */

.lqg-feedback {
	margin-top: 1.25rem;
	padding: 1rem 1.25rem;
	border-radius: 10px;
	border: 1px solid var(--lqg-border);
	background: var(--lqg-surface);
}

.lqg-feedback-header {
	font-size: 1rem;
	font-weight: 700;
	margin-bottom: 0.375rem;
}

.lqg-feedback--correct {
	color: var(--lqg-correct);
}

.lqg-feedback--incorrect {
	color: var(--lqg-incorrect);
}

.lqg-feedback-explanation {
	font-size: 0.9rem;
	color: var(--lqg-muted);
	margin: 0 0 1rem;
	line-height: 1.5;
}

.lqg-next-btn {
	padding: 0.625rem 1.5rem;
	background: var(--lqg-primary);
	color: var(--lqg-btn-text);
	border: none;
	border-radius: 8px;
	font-size: 0.9rem;
	font-weight: 600;
	cursor: pointer;
	transition: background 0.2s ease;
}

.lqg-next-btn:hover {
	background: var(--lqg-primary-hover);
}

/* ── Results ─────────────────────────────────────────────────────────────── */

.lqg-results-header {
	text-align: center;
	margin-bottom: 2rem;
}

.lqg-results-title {
	font-size: 1.5rem;
	font-weight: 700;
	margin: 0 0 1rem;
}

.lqg-score-display {
	margin-bottom: 0.75rem;
}

.lqg-score-value {
	font-size: 3rem;
	font-weight: 800;
	color: var(--lqg-primary);
	line-height: 1;
}

.lqg-score-label {
	display: block;
	font-size: 0.9rem;
	color: var(--lqg-muted);
	margin-top: 0.25rem;
}

.lqg-score-bar {
	height: 8px;
	background: var(--lqg-light-bg);
	border-radius: 4px;
	overflow: hidden;
	max-width: 300px;
	margin: 0 auto;
}

.lqg-score-fill {
	height: 100%;
	border-radius: 4px;
	transition: width 0.8s ease;
}

.lqg-score--great { background: var(--lqg-correct); }
.lqg-score--ok    { background: #f39c12; }
.lqg-score--poor  { background: var(--lqg-incorrect); }

/* ── Results Breakdown ───────────────────────────────────────────────────── */

.lqg-results-breakdown {
	margin-bottom: 1.5rem;
}

.lqg-result-row {
	display: flex;
	gap: 0.75rem;
	padding: 0.875rem 1rem;
	border-radius: 8px;
	margin-bottom: 0.5rem;
	border: 1px solid var(--lqg-border);
}

.lqg-result--correct {
	border-left: 3px solid var(--lqg-correct);
}

.lqg-result--incorrect {
	border-left: 3px solid var(--lqg-incorrect);
}

.lqg-result-icon {
	font-size: 1.1rem;
	font-weight: 700;
	flex-shrink: 0;
	width: 24px;
	text-align: center;
}

.lqg-result--correct .lqg-result-icon { color: var(--lqg-correct); }
.lqg-result--incorrect .lqg-result-icon { color: var(--lqg-incorrect); }

.lqg-result-content {
	flex: 1;
	min-width: 0;
}

.lqg-result-question {
	font-size: 0.9rem;
	font-weight: 600;
	margin: 0 0 0.25rem;
	line-height: 1.4;
}

.lqg-result-answer,
.lqg-result-correct {
	font-size: 0.8125rem;
	color: var(--lqg-muted);
	margin: 0;
}

.lqg-result-correct {
	color: var(--lqg-correct);
	font-weight: 500;
}

/* ── Result Actions ──────────────────────────────────────────────────────── */

.lqg-results-actions {
	display: flex;
	flex-wrap: wrap;
	gap: 0.625rem;
	justify-content: center;
}

.lqg-results-actions button {
	padding: 0.625rem 1.25rem;
	border-radius: 8px;
	font-size: 0.875rem;
	font-weight: 600;
	cursor: pointer;
	transition: all 0.2s ease;
	border: 1px solid var(--lqg-border);
	background: var(--lqg-bg);
	color: var(--lqg-text);
}

.lqg-results-actions button:hover {
	border-color: var(--lqg-primary);
	color: var(--lqg-primary);
}

.lqg-retake-btn {
	background: var(--lqg-primary) !important;
	color: var(--lqg-btn-text) !important;
	border-color: var(--lqg-primary) !important;
}

.lqg-retake-btn:hover {
	background: var(--lqg-primary-hover) !important;
}

/* ── Responsive ──────────────────────────────────────────────────────────── */

@media (max-width: 600px) {
	.lqg-quiz {
		padding: 1.25rem;
		margin: 1rem auto;
	}

	.lqg-options {
		flex-direction: column;
		gap: 0.75rem;
	}

	.lqg-quiz-header {
		flex-direction: column;
		align-items: flex-start;
	}

	.lqg-results-actions {
		flex-direction: column;
	}

	.lqg-results-actions button {
		width: 100%;
	}

	.lqg-score-value {
		font-size: 2.5rem;
	}
}