/* ASL Kids — kid-friendly learning UI */
.asl-app {
	--asl-bg: #0f172a;
	--asl-card: #1e293b;
	--asl-ink: #f8fafc;
	--asl-muted: #94a3b8;
	--asl-accent: #a78bfa;
	--asl-good: #34d399;
	--asl-warn: #fbbf24;
	font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
	color: var(--asl-ink);
	background:
		radial-gradient(1200px 500px at 10% -10%, rgba(124, 58, 237, 0.35), transparent 55%),
		radial-gradient(900px 400px at 100% 0%, rgba(14, 165, 233, 0.25), transparent 50%),
		var(--asl-bg);
	border-radius: 18px;
	min-height: 70vh;
	padding: 16px;
	box-sizing: border-box;
}
.asl-wait {
	margin: 2rem auto;
	text-align: center;
	color: var(--asl-muted);
}
.asl-shell {
	max-width: 980px;
	margin: 0 auto;
}
.asl-hero {
	display: flex;
	flex-wrap: wrap;
	align-items: flex-start;
	justify-content: space-between;
	gap: 12px;
	margin-bottom: 16px;
}
.asl-hero h1 {
	margin: 0;
	font-size: 1.55rem;
	font-weight: 800;
	letter-spacing: -0.02em;
}
.asl-hero p {
	margin: 6px 0 0;
	color: var(--asl-muted);
	font-size: 0.95rem;
	max-width: 36rem;
}
.asl-stats {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
}
.asl-pill {
	background: rgba(255, 255, 255, 0.08);
	border: 1px solid rgba(255, 255, 255, 0.12);
	border-radius: 999px;
	padding: 8px 14px;
	font-size: 0.85rem;
	font-weight: 700;
	display: inline-flex;
	align-items: center;
	gap: 6px;
}
.asl-pill i { color: var(--asl-accent); }
.asl-pill strong { color: #fff; }

.asl-nav {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	margin-bottom: 14px;
}
.asl-nav button {
	border: 1px solid rgba(255, 255, 255, 0.14);
	background: rgba(255, 255, 255, 0.06);
	color: var(--asl-ink);
	border-radius: 12px;
	padding: 10px 14px;
	font-weight: 700;
	font-size: 0.9rem;
	cursor: pointer;
}
.asl-nav button.on {
	background: linear-gradient(135deg, #7c3aed, #2563eb);
	border-color: transparent;
}
.asl-nav button:focus-visible {
	outline: 2px solid #c4b5fd;
	outline-offset: 2px;
}

.asl-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
	gap: 12px;
}
.asl-unit {
	background: var(--asl-card);
	border: 1px solid rgba(255, 255, 255, 0.08);
	border-radius: 16px;
	padding: 14px;
	cursor: pointer;
	text-align: left;
	color: inherit;
	transition: transform 0.12s ease, border-color 0.12s ease;
}
.asl-unit:hover {
	transform: translateY(-2px);
	border-color: rgba(167, 139, 250, 0.45);
}
.asl-unit-top {
	display: flex;
	align-items: center;
	gap: 10px;
	margin-bottom: 8px;
}
.asl-unit-ico {
	width: 42px;
	height: 42px;
	border-radius: 12px;
	display: grid;
	place-items: center;
	color: #fff;
	font-size: 1.1rem;
	flex: 0 0 auto;
}
.asl-unit h3 {
	margin: 0;
	font-size: 1.05rem;
}
.asl-unit p {
	margin: 2px 0 0;
	color: var(--asl-muted);
	font-size: 0.8rem;
}
.asl-bar {
	height: 8px;
	border-radius: 999px;
	background: rgba(255, 255, 255, 0.08);
	overflow: hidden;
	margin-top: 12px;
}
.asl-bar > span {
	display: block;
	height: 100%;
	border-radius: inherit;
	background: linear-gradient(90deg, #34d399, #a78bfa);
}
.asl-unit-meta {
	display: flex;
	justify-content: space-between;
	margin-top: 8px;
	font-size: 0.78rem;
	color: var(--asl-muted);
}

.asl-toolbar {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	align-items: center;
	margin-bottom: 12px;
}
.asl-btn {
	border: 0;
	border-radius: 12px;
	padding: 10px 14px;
	font-weight: 700;
	font-size: 0.9rem;
	cursor: pointer;
	background: rgba(255, 255, 255, 0.1);
	color: #fff;
}
.asl-btn.primary {
	background: linear-gradient(135deg, #7c3aed, #4f46e5);
}
.asl-btn.good {
	background: linear-gradient(135deg, #059669, #10b981);
}
.asl-btn.warn {
	background: linear-gradient(135deg, #d97706, #f59e0b);
	color: #111;
}
.asl-btn:disabled {
	opacity: 0.5;
	cursor: not-allowed;
}

.asl-sign-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
	gap: 10px;
}
.asl-sign-tile {
	background: var(--asl-card);
	border: 1px solid rgba(255, 255, 255, 0.08);
	border-radius: 14px;
	padding: 12px 8px;
	text-align: center;
	cursor: pointer;
	color: inherit;
	min-height: 110px;
}
.asl-sign-tile.learned {
	border-color: rgba(52, 211, 153, 0.55);
	box-shadow: inset 0 0 0 1px rgba(52, 211, 153, 0.2);
}
.asl-sign-tile .em {
	font-size: 1.6rem;
	line-height: 1.2;
	margin-bottom: 4px;
}
.asl-sign-tile .wd {
	font-weight: 800;
	font-size: 0.95rem;
}
.asl-sign-tile .st {
	margin-top: 4px;
	color: var(--asl-warn);
	font-size: 0.75rem;
	letter-spacing: 0.05em;
}

.asl-card {
	background: var(--asl-card);
	border: 1px solid rgba(255, 255, 255, 0.1);
	border-radius: 18px;
	padding: 18px;
	max-width: 560px;
	margin: 0 auto;
}
.asl-card.asl-card-wide {
	max-width: 720px;
}
.asl-card-head {
	text-align: center;
	margin-bottom: 10px;
}
.asl-card-head .em-sm {
	font-size: 1.8rem;
	line-height: 1;
	display: inline-block;
	margin-bottom: 4px;
}
.asl-card .em-lg {
	font-size: 3.2rem;
	text-align: center;
	line-height: 1.1;
	margin-bottom: 8px;
}
.asl-card h2 {
	margin: 0;
	text-align: center;
	font-size: 1.8rem;
	font-weight: 800;
}
.asl-card .sub {
	text-align: center;
	color: var(--asl-muted);
	margin: 4px 0 14px;
	font-size: 0.9rem;
}
.asl-sign-tile .vid-tag {
	margin-top: 6px;
	display: inline-flex;
	align-items: center;
	gap: 4px;
	font-size: 0.68rem;
	font-weight: 700;
	letter-spacing: 0.04em;
	text-transform: uppercase;
	color: #c4b5fd;
	background: rgba(124, 58, 237, 0.22);
	border: 1px solid rgba(167, 139, 250, 0.35);
	border-radius: 999px;
	padding: 2px 8px;
}
.asl-video-wrap {
	margin: 0 0 14px;
}
.asl-video-frame {
	position: relative;
	width: 100%;
	aspect-ratio: 16 / 9;
	border-radius: 14px;
	overflow: hidden;
	background: #020617;
	border: 1px solid rgba(255, 255, 255, 0.12);
	box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35);
}
.asl-video-frame iframe {
	position: absolute;
	inset: 0;
	width: 100%;
	height: 100%;
	border: 0;
}
.asl-video-meta {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: space-between;
	gap: 8px;
	margin-top: 8px;
}
.asl-video-meta .asl-btn {
	padding: 8px 12px;
	font-size: 0.82rem;
}
.asl-credit {
	color: var(--asl-muted);
	font-size: 0.78rem;
}
.asl-credit a {
	color: #c4b5fd;
	text-decoration: underline;
}
.asl-video-missing {
	text-align: center;
	padding: 18px 12px;
	border-radius: 14px;
	background: rgba(15, 23, 42, 0.55);
	border: 1px dashed rgba(255, 255, 255, 0.18);
	margin-bottom: 14px;
	color: var(--asl-muted);
}
.asl-video-missing .em-lg {
	margin-bottom: 6px;
}
.asl-how {
	background: rgba(15, 23, 42, 0.55);
	border-radius: 14px;
	padding: 14px;
	line-height: 1.55;
	font-size: 1.02rem;
}
.asl-tip {
	margin-top: 10px;
	color: #c4b5fd;
	font-size: 0.92rem;
	line-height: 1.45;
}
.asl-actions {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	justify-content: center;
	margin-top: 16px;
}
.asl-pager {
	display: flex;
	justify-content: space-between;
	align-items: center;
	margin-top: 12px;
	color: var(--asl-muted);
	font-size: 0.85rem;
}

.asl-quiz-opt {
	display: block;
	width: 100%;
	text-align: left;
	margin: 8px 0 0;
	padding: 12px 14px;
	border-radius: 12px;
	border: 1px solid rgba(255, 255, 255, 0.12);
	background: rgba(255, 255, 255, 0.05);
	color: #fff;
	font-weight: 700;
	font-size: 1rem;
	cursor: pointer;
}
.asl-quiz-opt:hover { border-color: rgba(167, 139, 250, 0.6); }
.asl-quiz-opt.right {
	border-color: rgba(52, 211, 153, 0.7);
	background: rgba(16, 185, 129, 0.18);
}
.asl-quiz-opt.wrong {
	border-color: rgba(248, 113, 113, 0.7);
	background: rgba(239, 68, 68, 0.15);
}
.asl-score {
	text-align: center;
	font-size: 1.2rem;
	font-weight: 800;
	margin: 8px 0 12px;
}
.asl-empty {
	text-align: center;
	color: var(--asl-muted);
	padding: 2rem 1rem;
}
.asl-toast {
	position: fixed;
	left: 50%;
	bottom: 24px;
	transform: translateX(-50%);
	background: #111827;
	color: #fff;
	padding: 10px 16px;
	border-radius: 999px;
	font-weight: 700;
	font-size: 0.9rem;
	z-index: 80;
	box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
	border: 1px solid rgba(167, 139, 250, 0.4);
}
.asl-tool {
	display: inline-flex;
	align-items: center;
	padding: 6px 12px;
	border-radius: 10px;
	border: 1px solid var(--bo-border, #e2e8f0);
	color: var(--bo-text, #0f172a);
	background: var(--bo-bg-elevated, #fff);
	font-size: 0.8rem;
	text-decoration: none;
	font-weight: 600;
}

@media (max-width: 640px) {
	.asl-app { padding: 12px; border-radius: 12px; }
	.asl-hero h1 { font-size: 1.3rem; }
	.asl-card h2 { font-size: 1.45rem; }
	.asl-card .em-lg { font-size: 2.6rem; }
	.asl-video-meta { justify-content: center; text-align: center; }
}