/* Reusable interactive-game components: flip flashcards, quiz, match-the-
   words, memory/concentration game, mission-complete celebration toast.
   Shared across Mission Detail and English Lab (vocabulary match-up). */

/* Flip flashcards */
.flashcard {
	background: none;
	border: none;
	padding: 0;
	perspective: 800px;
	cursor: pointer;
	min-height: auto;
}

.flashcard__inner {
	position: relative;
	display: block;
	width: 100%;
	aspect-ratio: 4 / 3;
	transition: transform var(--duration-slow) var(--ease-standard);
	transform-style: preserve-3d;
}

.flashcard.is-flipped .flashcard__inner {
	transform: rotateY(180deg);
}

.flashcard__face {
	position: absolute;
	inset: 0;
	display: flex;
	align-items: center;
	justify-content: center;
	flex-direction: column;
	gap: var(--space-2);
	backface-visibility: hidden;
	border-radius: var(--radius-md);
	padding: var(--space-3);
	font-weight: 700;
	text-align: center;
}

.flashcard__face--front {
	background: var(--color-surface);
	box-shadow: var(--shadow-card);
	color: var(--color-anchor);
}

.flashcard__face--back {
	background: var(--color-interface-alt);
	color: var(--color-on-anchor);
	transform: rotateY(180deg);
}

/* Quiz */
.psc-quiz__question {
	border: none;
	padding: 0;
	margin: 0 0 var(--space-5);
}

.psc-quiz__question legend {
	font-family: var(--font-display);
	font-weight: 700;
	padding: 0;
	margin-bottom: var(--space-3);
}

.psc-quiz__options {
	display: flex;
	flex-direction: column;
	gap: var(--space-2);
	margin-bottom: var(--space-3);
}

.psc-quiz__option {
	display: flex;
	align-items: center;
	gap: var(--space-2);
	background: var(--color-surface-muted);
	border-radius: var(--radius-sm);
	padding: var(--space-2) var(--space-3);
	cursor: pointer;
}

.psc-quiz__feedback {
	font-weight: 700;
	min-height: 1.5em;
}

.psc-quiz__question--correct .psc-quiz__feedback {
	color: var(--color-interface-alt);
}

.psc-quiz__question--incorrect .psc-quiz__feedback {
	color: var(--color-accent-strong);
}

/* Match the words */
.psc-match__columns {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: var(--space-4);
}

.psc-match__column {
	display: flex;
	flex-direction: column;
	gap: var(--space-2);
}

.psc-match__item {
	background: var(--color-surface-muted);
	border: 2px solid var(--color-border);
	border-radius: var(--radius-sm);
	padding: var(--space-2) var(--space-3);
	cursor: pointer;
	font-weight: 600;
}

.psc-match__item--selected {
	border-color: var(--color-reward-strong);
	background: var(--color-reward-soft);
}

.psc-match__item--matched {
	background: var(--raw-teal-400);
	color: var(--color-on-reward);
	border-color: var(--raw-teal-400);
	cursor: default;
}

.psc-match__status {
	font-weight: 700;
	min-height: 1.5em;
}

/* Memory / concentration game */
.psc-memory__grid {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: var(--space-3);
}

@media (max-width: 600px) {
	.psc-memory__grid {
		grid-template-columns: repeat(3, 1fr);
	}
}

.psc-memory__tile {
	position: relative;
	aspect-ratio: 1;
	border: none;
	background: none;
	padding: 0;
	cursor: pointer;
	perspective: 800px;
	min-height: auto;
}

.psc-memory__tile-back,
.psc-memory__tile-front {
	position: absolute;
	inset: 0;
	display: flex;
	align-items: center;
	justify-content: center;
	text-align: center;
	border-radius: var(--radius-md);
	backface-visibility: hidden;
	transition: transform var(--duration-base) var(--ease-standard);
	font-weight: 700;
	padding: var(--space-2);
}

.psc-memory__tile-back {
	background: var(--color-interface-alt);
	color: var(--color-on-anchor);
	font-size: var(--text-2xl);
}

.psc-memory__tile-front {
	background: var(--color-reward-soft);
	color: var(--color-anchor);
	transform: rotateY(180deg);
	font-size: var(--text-sm);
}

.psc-memory__tile.is-flipped .psc-memory__tile-back,
.psc-memory__tile.is-matched .psc-memory__tile-back {
	transform: rotateY(180deg);
}

.psc-memory__tile.is-flipped .psc-memory__tile-front,
.psc-memory__tile.is-matched .psc-memory__tile-front {
	transform: rotateY(0);
}

.psc-memory__tile.is-matched .psc-memory__tile-front {
	background: var(--raw-teal-400);
	color: var(--color-on-reward);
}

.psc-memory__status {
	font-weight: 700;
	min-height: 1.5em;
}

/* Mission-complete celebration toast */
.psc-celebration {
	position: fixed;
	bottom: var(--space-5);
	left: 50%;
	transform: translateX(-50%);
	z-index: 1000;
	display: flex;
	align-items: center;
	gap: var(--space-3);
	background: var(--color-reward);
	color: var(--color-on-reward);
	border-radius: var(--radius-lg);
	box-shadow: var(--shadow-card);
	padding: var(--space-3) var(--space-5);
	max-width: 90vw;
}

.psc-celebration img {
	width: 56px;
	height: 56px;
	object-fit: contain;
}

.psc-celebration p {
	font-family: var(--font-display);
	font-weight: 700;
	margin: 0;
}