/* Concept hub */
.kz-concept { max-width: 48rem; margin: 0 auto; padding: 1rem; }
.kz-concept__tracker { margin-bottom: 1.5rem; padding: 1rem; background: linear-gradient(135deg, #e8f5e9, #e3f2fd); border-radius: 12px; }
.kz-concept__meter { height: 12px; background: #cfd8dc; border-radius: 999px; overflow: hidden; }
.kz-concept__meter span { display: block; height: 100%; background: #43a047; }
.kz-concept__storyboard { display: grid; gap: 1rem; margin: 1.5rem 0; }
.kz-concept-scene { padding: 1rem; border-radius: 12px; background: #fff8e1; }
.kz-concept-scene--cap { background: #ffe0b2; }
.kz-concept-scene--leaf { background: #c8e6c9; }
.kz-concept-scene--nova { background: #e1bee7; }
.kz-concept-scene__guide { font-weight: 700; margin: 0 0 .25rem; text-transform: uppercase; font-size: .75rem; }
.kz-concept__activities { list-style: none; padding: 0; margin: 0; display: grid; gap: 1.25rem; }
.kz-concept-activity { padding: 1rem; border: 1px solid #eceff1; border-radius: 12px; }
.kz-concept-activity__role { font-size: .7rem; text-transform: uppercase; opacity: .7; }
.kz-game__prompt { font-weight: 600; }
.kz-game-letter-a, .kz-game-at__starts, .kz-game-opp { display: flex; flex-wrap: wrap; gap: .5rem; }
.kz-game-opp { justify-content: space-between; }
.kz-tile { min-width: 2.75rem; min-height: 2.75rem; font-size: 1.25rem; border-radius: 10px; border: 2px solid #90a4ae; background: #fff; cursor: pointer; }
.kz-tile.is-selected, .kz-tile.is-matched { border-color: #43a047; background: #e8f5e9; }
.kz-tile.is-wrong { border-color: #e53935; }
.kz-concept__cta { margin-top: 1.5rem; padding: 1rem; background: #e3f2fd; border-radius: 12px; text-align: center; }
.kz-btn { display: inline-block; margin-top: .5rem; padding: .5rem 1rem; border-radius: 8px; border: 0; background: #1565c0; color: #fff; cursor: pointer; text-decoration: none; }
.kz-concept__children { margin-bottom: 1rem; display: grid; gap: .75rem; }
.kz-concept__learner-link {
	display: inline-flex;
	align-items: center;
	gap: .4rem;
	margin: 0;
	font-weight: 700;
	text-decoration: none;
	color: inherit;
}
.kz-concept__learner-link:hover,
.kz-concept__learner-link:focus-visible {
	text-decoration: underline;
}
.kz-concept__active-chip,
.kz-concept__child {
	display: inline-flex;
	align-items: center;
	gap: .4rem;
	margin: 0;
	font-weight: 700;
}
.kz-concept__avatar-picker {
	border: 0;
	margin: 0;
	padding: 0;
	display: grid;
	grid-template-columns: repeat(6, minmax(0, 1fr));
	gap: .55rem;
	width: 100%;
}
.kz-concept__avatar-picker legend {
	font-size: .85rem;
	font-weight: 600;
	margin-bottom: .35rem;
}
.kz-concept__avatar-option {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: .25rem;
	padding: .4rem;
	border-radius: 12px;
	border: 2px solid transparent;
	background: #fff;
	box-shadow: 0 6px 14px rgba(22, 50, 74, .08);
	cursor: pointer;
	min-width: 0;
}
.kz-concept__avatar-option input {
	position: absolute;
	opacity: 0;
	pointer-events: none;
}
.kz-concept__avatar-option:has(input:checked),
.kz-concept__avatar-option:focus-within {
	border-color: #3cb54a;
	box-shadow: 0 0 0 2px rgba(60, 181, 74, .25);
}
.kz-concept__avatar-photo {
	display: block;
	width: 100%;
	max-width: 4.5rem;
	aspect-ratio: 1;
	object-fit: cover;
	border-radius: 50%;
	background: var(--kz-avatar-tone, #eef8f1);
}
.kz-concept__avatar-photo--inline {
	width: 2.25rem;
	max-width: 2.25rem;
	height: 2.25rem;
	flex-shrink: 0;
}
.kz-concept__avatar-chip { font-size: 1.35rem; line-height: 1; }
.kz-concept__avatar-name { font-size: .7rem; font-weight: 700; text-align: center; }
@media (max-width: 700px) {
	.kz-concept__avatar-picker {
		grid-template-columns: repeat(4, minmax(0, 1fr));
	}
}
@media (max-width: 420px) {
	.kz-concept__avatar-picker {
		grid-template-columns: repeat(3, minmax(0, 1fr));
	}
}
.kz-concept__privacy-note { margin: 0; font-size: .8rem; opacity: .75; }
.kz-concept__delete-btn {
	background: transparent;
	border: 0;
	color: #c62828;
	font-size: .8rem;
	cursor: pointer;
	padding: 0;
	text-decoration: underline;
}
.kz-quiz-form fieldset { border: 0; margin: 0 0 .75rem; padding: 0; }
.kz-quiz-form label { display: block; margin: .25rem 0; }