/* SC-ICG Research Course 前台：樣式全部限定在 .scrc-app／.scrc-toast 之內，避免影響佈景主題。 */

.scrc-app,
.scrc-toast {
	--scrc-bg: oklch(1 0 0);
	--scrc-fg: oklch(0.129 0.042 264.695);
	--scrc-card: oklch(1 0 0);
	--scrc-muted: oklch(0.968 0.007 247.896);
	--scrc-muted-fg: oklch(0.554 0.046 257.417);
	--scrc-border: oklch(0.929 0.013 255.508);
	--scrc-primary: oklch(0.523 0.133 246.7);
	--scrc-primary-hover: oklch(0.458 0.119 247.2);
	--scrc-primary-fg: oklch(0.984 0.003 247.858);
	--scrc-primary-soft: oklch(0.96 0.02 246.7);
	--scrc-success: oklch(0.49 0.13 149.2);
	--scrc-success-soft: oklch(0.965 0.03 150);
	--scrc-warning: oklch(0.56 0.13 67);
	--scrc-warning-soft: oklch(0.975 0.03 80);
	--scrc-destructive: oklch(0.577 0.245 27.325);
	--scrc-destructive-soft: oklch(0.97 0.02 27);
	--scrc-radius: 10px;
	--scrc-radius-card: 14px;
	--scrc-radius-control: 8px;
}

.scrc-app {
	box-sizing: border-box;
	width: 100%;
	max-width: 880px;
	margin-inline: auto;
	color: var(--scrc-fg);
	font-family: Inter, "Noto Sans TC", system-ui, sans-serif;
	font-size: 16px;
	line-height: 1.7;
	text-align: left;
}

.scrc-app *,
.scrc-app *::before,
.scrc-app *::after {
	box-sizing: border-box;
}

.scrc-app p {
	margin: 0 0 0.75em;
}

.scrc-app p:last-child {
	margin-bottom: 0;
}

/* ---------- 文字 ---------- */

.scrc-app .scrc-h1,
.scrc-app .scrc-h2,
.scrc-app .scrc-h3 {
	margin: 0 0 0.5em;
	color: var(--scrc-fg);
	font-family: inherit;
	font-weight: 700;
	line-height: 1.35;
	letter-spacing: 0;
}

.scrc-app .scrc-h1 {
	font-size: 1.625rem;
}

.scrc-app .scrc-h2 {
	font-size: 1.375rem;
}

.scrc-app .scrc-h3 {
	font-size: 1.125rem;
}

.scrc-app .scrc-eyebrow {
	margin: 0 0 0.25em;
	color: var(--scrc-muted-fg);
	font-size: 0.875rem;
	font-weight: 600;
}

.scrc-app .scrc-muted {
	color: var(--scrc-muted-fg);
}

.scrc-app .scrc-small {
	font-size: 0.875rem;
}

.scrc-app .scrc-center {
	text-align: center;
}

.scrc-app .scrc-prose p {
	margin: 0 0 0.75em;
}

.scrc-sr {
	position: absolute !important;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

/* ---------- 版面 ---------- */

.scrc-app .scrc-head {
	display: flex;
	align-items: flex-start;
	justify-content: space-between;
	gap: 16px;
	margin: 8px 0 16px;
}

.scrc-app .scrc-card {
	margin: 0 0 16px;
	padding: 24px;
	background: var(--scrc-card);
	border: 1px solid var(--scrc-border);
	border-radius: var(--scrc-radius-card);
	box-shadow: 0 1px 2px oklch(0.129 0.042 264.695 / 0.04);
}

.scrc-app .scrc-auth {
	max-width: 480px;
	margin-inline: auto;
}

.scrc-app .scrc-row-between {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	flex-wrap: wrap;
}

.scrc-app .scrc-actions {
	display: flex;
	flex-wrap: wrap;
	gap: 12px;
	margin-top: 20px;
}

.scrc-app .scrc-back {
	margin: 0 0 8px;
}

/* ---------- 按鈕與連結 ---------- */

.scrc-app .scrc-btn,
.scrc-toast .scrc-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	min-height: 44px;
	margin: 0;
	padding: 0 20px;
	border: 1px solid transparent;
	border-radius: var(--scrc-radius-control);
	background: var(--scrc-muted);
	color: var(--scrc-fg);
	font-family: inherit;
	font-size: 1rem;
	font-weight: 600;
	line-height: 1.2;
	text-decoration: none;
	text-transform: none;
	letter-spacing: 0;
	box-shadow: none;
	cursor: pointer;
	transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.scrc-app .scrc-btn-primary {
	background: var(--scrc-primary);
	color: var(--scrc-primary-fg);
}

.scrc-app .scrc-btn-outline {
	background: var(--scrc-card);
	border-color: var(--scrc-border);
	color: var(--scrc-fg);
}

.scrc-app .scrc-btn-ghost {
	background: transparent;
	color: var(--scrc-fg);
}

.scrc-app .scrc-btn-sm {
	min-height: 40px;
	padding: 0 14px;
	font-size: 0.9375rem;
}

.scrc-app .scrc-btn-block {
	width: 100%;
}

.scrc-app .scrc-btn:disabled,
.scrc-app .scrc-btn[aria-disabled="true"] {
	opacity: 0.5;
	cursor: not-allowed;
}

@media (hover: hover) and (pointer: fine) {
	.scrc-app .scrc-btn-primary:not(:disabled):hover {
		background: var(--scrc-primary-hover);
		color: var(--scrc-primary-fg);
	}

	.scrc-app .scrc-btn-outline:not(:disabled):hover,
	.scrc-app .scrc-btn-ghost:not(:disabled):hover {
		background: var(--scrc-muted);
		color: var(--scrc-fg);
	}

	.scrc-app .scrc-link:hover {
		text-decoration: underline;
	}
}

@media (pointer: coarse) {
	.scrc-app .scrc-btn-sm {
		min-height: 44px;
	}
}

.scrc-app .scrc-link {
	color: var(--scrc-primary);
	font-weight: 600;
	text-decoration: none;
}

.scrc-app :focus-visible {
	outline: 2px solid var(--scrc-primary);
	outline-offset: 2px;
}

/* ---------- 表單 ---------- */

.scrc-app .scrc-form {
	display: grid;
	gap: 12px;
	margin: 16px 0 0;
}

.scrc-app .scrc-label {
	font-size: 0.9375rem;
	font-weight: 600;
}

.scrc-app .scrc-input {
	width: 100%;
	min-height: 48px;
	margin: 0;
	padding: 10px 14px;
	border: 1px solid var(--scrc-border);
	border-radius: var(--scrc-radius-control);
	background: var(--scrc-card);
	color: var(--scrc-fg);
	font-family: inherit;
	font-size: 16px;
	box-shadow: none;
}

.scrc-app .scrc-input:focus {
	border-color: var(--scrc-primary);
	outline: 2px solid var(--scrc-primary);
	outline-offset: 0;
}

.scrc-app .scrc-logout {
	margin: 0;
	flex: none;
}

/* ---------- 提示 ---------- */

.scrc-app .scrc-alert {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 8px 12px;
	margin: 0 0 16px;
	padding: 14px 16px;
	border: 1px solid var(--scrc-border);
	border-radius: var(--scrc-radius);
	background: var(--scrc-muted);
	color: var(--scrc-fg);
}

.scrc-app .scrc-alert > .scrc-prose {
	flex-basis: 100%;
}

.scrc-app .scrc-alert-success {
	border-color: oklch(0.85 0.07 150);
	background: var(--scrc-success-soft);
}

.scrc-app .scrc-alert-error {
	border-color: oklch(0.85 0.08 27);
	background: var(--scrc-destructive-soft);
}

.scrc-app .scrc-alert-warning {
	border-color: oklch(0.86 0.08 80);
	background: var(--scrc-warning-soft);
}

.scrc-app .scrc-alert strong {
	font-weight: 700;
}

.scrc-app .scrc-expl-title {
	flex-basis: 100%;
	margin: 4px 0 0;
	font-weight: 700;
}

.scrc-app .scrc-badge {
	display: inline-flex;
	align-items: center;
	padding: 2px 10px;
	border-radius: 999px;
	background: var(--scrc-muted);
	color: var(--scrc-muted-fg);
	font-size: 0.8125rem;
	font-weight: 600;
	line-height: 1.6;
	white-space: nowrap;
}

.scrc-app .scrc-badge-success {
	background: var(--scrc-success-soft);
	color: var(--scrc-success);
}

.scrc-app .scrc-badge-info {
	background: var(--scrc-primary-soft);
	color: var(--scrc-primary);
}

/* ---------- 進度與清單 ---------- */

.scrc-app .scrc-progress {
	height: 12px;
	margin: 8px 0 12px;
	overflow: hidden;
	border-radius: 999px;
	background: var(--scrc-muted);
}

.scrc-app .scrc-progress span {
	display: block;
	height: 100%;
	border-radius: inherit;
	background: var(--scrc-primary);
	transition: width 0.3s ease;
}

.scrc-app .scrc-progress-num {
	font-size: 1.5rem;
	font-weight: 700;
	font-variant-numeric: tabular-nums;
}

.scrc-app .scrc-lessons,
.scrc-app .scrc-checklist,
.scrc-app .scrc-review {
	margin: 0;
	padding: 0;
	list-style: none;
}

.scrc-app .scrc-lesson,
.scrc-app .scrc-check-row {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	margin: 0;
	padding: 14px 0;
	border-bottom: 1px solid var(--scrc-border);
}

.scrc-app .scrc-lesson:last-child,
.scrc-app .scrc-check-row:last-child {
	border-bottom: 0;
	padding-bottom: 0;
}

.scrc-app .scrc-lesson-main {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 8px 12px;
	min-width: 0;
}

.scrc-app .scrc-lesson-title {
	font-weight: 600;
}

.scrc-app .scrc-lesson.is-locked .scrc-lesson-title,
.scrc-app .scrc-check-row.is-locked {
	color: var(--scrc-muted-fg);
}

.scrc-app .scrc-lesson-action {
	flex: none;
}

.scrc-app .scrc-check {
	display: inline-flex;
	align-items: center;
	gap: 12px;
	min-height: 44px;
	margin: 0;
	cursor: pointer;
	font-weight: 600;
}

.scrc-app .scrc-check input {
	width: 22px;
	height: 22px;
	margin: 0;
	accent-color: var(--scrc-primary);
	flex: none;
}

.scrc-app .scrc-check-lg {
	font-size: 1.0625rem;
}

.scrc-app .scrc-review {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
}

/* ---------- 播放器 ---------- */

.scrc-app .scrc-player {
	display: block;
	width: 100%;
	aspect-ratio: 16 / 9;
	margin: 12px 0;
	overflow: hidden;
	border-radius: 12px;
	background: #000;
}

.scrc-app .scrc-stepper {
	display: flex;
	gap: 6px;
	margin: 0 0 12px;
	padding: 2px 2px 6px;
	overflow-x: auto;
	list-style: none;
	scrollbar-width: thin;
}

.scrc-app .scrc-step-chip {
	flex: none;
	margin: 0;
	padding: 4px 10px;
	border: 1px solid var(--scrc-border);
	border-radius: 999px;
	background: var(--scrc-card);
	color: var(--scrc-muted-fg);
	font-size: 0.8125rem;
	font-weight: 600;
	line-height: 1.5;
	white-space: nowrap;
}

.scrc-app .scrc-step-chip.is-done {
	border-color: transparent;
	background: var(--scrc-success-soft);
	color: var(--scrc-success);
}

.scrc-app .scrc-step-chip.is-current {
	border-color: var(--scrc-primary);
	background: var(--scrc-primary);
	color: var(--scrc-primary-fg);
}

/* ---------- 題目 ---------- */

.scrc-app .scrc-options {
	display: grid;
	gap: 10px;
	margin: 0;
	padding: 0;
	border: 0;
	min-width: 0;
}

.scrc-app .scrc-question {
	float: left;
	width: 100%;
	margin: 0 0 8px;
	padding: 0;
	font-size: 1.0625rem;
	font-weight: 600;
	white-space: pre-line;
}

.scrc-app .scrc-question + * {
	clear: both;
}

.scrc-app .scrc-option {
	position: relative;
	display: flex;
	align-items: center;
	gap: 12px;
	min-height: 56px;
	margin: 0;
	padding: 12px 14px;
	border: 1px solid var(--scrc-border);
	border-radius: var(--scrc-radius);
	background: var(--scrc-card);
	cursor: pointer;
	font-weight: 500;
	transition: border-color 0.15s ease, background-color 0.15s ease;
}

.scrc-app .scrc-option input {
	position: absolute;
	opacity: 0;
	width: 1px;
	height: 1px;
}

.scrc-app .scrc-option-key {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	flex: none;
	width: 32px;
	height: 32px;
	border: 1px solid var(--scrc-border);
	border-radius: 999px;
	background: var(--scrc-muted);
	font-weight: 700;
}

.scrc-app .scrc-option:has(input:checked) {
	border-color: var(--scrc-primary);
	background: var(--scrc-primary-soft);
}

.scrc-app .scrc-option:has(input:checked) .scrc-option-key {
	border-color: var(--scrc-primary);
	background: var(--scrc-primary);
	color: var(--scrc-primary-fg);
}

.scrc-app .scrc-option:has(input:focus-visible) {
	outline: 2px solid var(--scrc-primary);
	outline-offset: 2px;
}

.scrc-app .scrc-option:has(input:disabled) {
	cursor: default;
}

.scrc-app .scrc-option.is-correct,
.scrc-app .scrc-option.is-correct:has(input:checked) {
	border-color: var(--scrc-success);
	background: var(--scrc-success-soft);
}

.scrc-app .scrc-option.is-correct .scrc-option-key,
.scrc-app .scrc-option.is-correct:has(input:checked) .scrc-option-key {
	border-color: var(--scrc-success);
	background: var(--scrc-success);
	color: #fff;
}

.scrc-app .scrc-option.is-wrong,
.scrc-app .scrc-option.is-wrong:has(input:checked) {
	border-color: var(--scrc-destructive);
	background: var(--scrc-destructive-soft);
}

.scrc-app .scrc-option.is-wrong .scrc-option-key,
.scrc-app .scrc-option.is-wrong:has(input:checked) .scrc-option-key {
	border-color: var(--scrc-destructive);
	background: var(--scrc-destructive);
	color: #fff;
}

.scrc-app .scrc-feedback:empty {
	display: none;
}

.scrc-app .scrc-feedback {
	margin-top: 8px;
}

.scrc-app .scrc-feedback .scrc-alert {
	margin: 0;
}

/* ---------- 活動題 ---------- */

.scrc-app .scrc-activity-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
	gap: 12px;
	margin: 16px 0 8px;
	padding: 0;
	list-style: none;
}

.scrc-app .scrc-activity {
	display: flex;
	flex-direction: column;
	justify-content: space-between;
	gap: 12px;
	margin: 0;
	padding: 16px;
	border: 1px solid var(--scrc-border);
	border-radius: var(--scrc-radius);
	background: var(--scrc-card);
}

.scrc-app .scrc-activity.is-done {
	background: var(--scrc-success-soft);
}

.scrc-app .scrc-activity-body {
	display: grid;
	gap: 6px;
	justify-items: start;
}

/* ---------- 對話框與通知 ---------- */

.scrc-app .scrc-dialog {
	position: fixed;
	inset: 0;
	z-index: 100000;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 16px;
	background: oklch(0.129 0.042 264.695 / 0.55);
}

.scrc-app .scrc-dialog[hidden] {
	display: none;
}

.scrc-app .scrc-dialog-panel {
	width: 100%;
	max-width: 440px;
	padding: 24px;
	border-radius: var(--scrc-radius-card);
	background: var(--scrc-card);
	box-shadow: 0 20px 50px oklch(0.129 0.042 264.695 / 0.25);
}

.scrc-app .scrc-dialog-actions {
	display: flex;
	justify-content: flex-end;
	margin-top: 20px;
}

html.scrc-lock {
	overflow: hidden;
}

.scrc-toast {
	position: fixed;
	left: 50%;
	bottom: 24px;
	z-index: 100001;
	max-width: min(92vw, 480px);
	padding: 12px 18px;
	border-radius: var(--scrc-radius);
	background: var(--scrc-fg);
	color: var(--scrc-primary-fg);
	font-family: Inter, "Noto Sans TC", system-ui, sans-serif;
	font-size: 0.9375rem;
	line-height: 1.5;
	opacity: 0;
	pointer-events: none;
	transform: translate(-50%, 8px);
	transition: opacity 0.2s ease, transform 0.2s ease;
}

.scrc-toast.is-visible {
	opacity: 1;
	transform: translate(-50%, 0);
}

.scrc-toast.scrc-toast-error {
	background: var(--scrc-destructive);
}

/* ---------- 載入中 ---------- */

.scrc-app .scrc-skel-video,
.scrc-app .scrc-skel-line {
	border-radius: 12px;
	background: var(--scrc-muted);
	animation: scrc-pulse 1.4s ease-in-out infinite;
}

.scrc-app .scrc-skel-video {
	aspect-ratio: 16 / 9;
}

.scrc-app .scrc-skel-line {
	height: 16px;
	width: 60%;
	margin-top: 16px;
}

@keyframes scrc-pulse {
	50% {
		opacity: 0.5;
	}
}

@media (prefers-reduced-motion: reduce) {
	.scrc-app *,
	.scrc-toast {
		animation: none !important;
		transition: none !important;
	}
}

/* ---------- 手機 ---------- */

@media (max-width: 600px) {
	.scrc-app .scrc-card {
		padding: 18px 16px;
	}

	.scrc-app .scrc-h1 {
		font-size: 1.375rem;
	}

	.scrc-app .scrc-lesson,
	.scrc-app .scrc-check-row {
		flex-wrap: wrap;
	}

	.scrc-app .scrc-lesson-action {
		width: 100%;
	}

	.scrc-app .scrc-lesson-action .scrc-btn {
		width: 100%;
	}

	.scrc-app .scrc-actions .scrc-btn {
		flex: 1 1 100%;
	}
}