/**
 * Flashcard Grid Block - Académie des Étoiles
 * Grid of flippable flashcards for terminology review
 */

.ade-flashcard-grid {
    /* Removed bulky white wrapper - let cards breathe */
    margin: var(--ade-space-xl) 0;
}

/* Optional title */
.ade-flashcard-grid__title {
    font-size: var(--ade-font-size-medium);
    font-weight: 700;
    color: var(--ade-gray-dark);
    margin: 0 0 var(--ade-space-xl) 0;
    text-align: center;
}

/* Container - responsive grid */
.ade-flashcard-grid__container {
    display: grid;
    gap: var(--ade-space-lg);
    margin-bottom: var(--ade-space-lg);
}

.ade-flashcard-grid__container--2-col {
    grid-template-columns: repeat(2, 1fr);
}

.ade-flashcard-grid__container--3-col {
    grid-template-columns: repeat(3, 1fr);
}

.ade-flashcard-grid__container--4-col {
    grid-template-columns: repeat(4, 1fr);
}

/* Individual card */
.ade-flashcard-grid__card {
    perspective: 1000px;
    height: 200px;
}

.ade-flashcard-grid__card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform var(--ade-transition-slow) !important;
    transform-style: preserve-3d;
    cursor: pointer;
    border: none;
    padding: 0;
    background: transparent;
    display: block;
}

.ade-flashcard-grid__card-inner:focus {
    outline: 3px solid var(--ade-primary);
    outline-offset: 2px;
    border-radius: 12px;
}

/* Flipped state */
.ade-flashcard-grid__card-inner[aria-expanded="true"] {
    transform: rotateY(180deg);
}

/* Card faces */
.ade-flashcard-grid__card-front,
.ade-flashcard-grid__card-back {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 12px;
    padding: var(--ade-space-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    box-sizing: border-box;
}

/* Front face */
.ade-flashcard-grid__card-front {
    background: linear-gradient(135deg, var(--ade-primary) 0%, var(--ade-primary-dark) 100%);
    color: var(--ade-white);
}

.ade-flashcard-grid__card-front .ade-flashcard-grid__card-content {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: var(--ade-space-md);
}

.ade-flashcard-grid__flip-hint {
    font-size: 12px;
    opacity: 0.8;
    font-weight: 400;
}

/* Back face */
.ade-flashcard-grid__card-back {
    background: var(--ade-white);
    color: var(--ade-gray-dark);
    border: 2px solid var(--ade-primary);
    transform: rotateY(180deg);
}

.ade-flashcard-grid__card-back .ade-flashcard-grid__card-content {
    font-size: var(--ade-font-size-base);
    line-height: 1.6;
}

/* Progress indicator */
.ade-flashcard-grid__progress {
    text-align: center;
    padding: var(--ade-space-md);
    background: linear-gradient(135deg, rgba(155, 81, 224, 0.05) 0%, rgba(202, 179, 255, 0.08) 100%);
    border-radius: 8px;
}

.ade-flashcard-grid__progress-text {
    font-size: 15px;
    color: var(--ade-gray-dark);
}

.ade-flashcard-grid__progress-text strong {
    color: var(--ade-primary);
}

/* Responsive - tablet */
@media screen and (max-width: 768px) {
    .ade-flashcard-grid {
        padding: var(--ade-space-lg);
    }

    .ade-flashcard-grid__container--3-col,
    .ade-flashcard-grid__container--4-col {
        grid-template-columns: repeat(2, 1fr);
    }

    .ade-flashcard-grid__card {
        height: 180px;
    }

    .ade-flashcard-grid__card-front .ade-flashcard-grid__card-content {
        font-size: 18px;
    }
}

/* Responsive - mobile */
@media screen and (max-width: 480px) {
    .ade-flashcard-grid {
        padding: var(--ade-space-md);
    }

    .ade-flashcard-grid__title {
        font-size: 18px;
    }

    .ade-flashcard-grid__container,
    .ade-flashcard-grid__container--2-col,
    .ade-flashcard-grid__container--3-col,
    .ade-flashcard-grid__container--4-col {
        grid-template-columns: 1fr;
        gap: var(--ade-space-md);
    }

    .ade-flashcard-grid__card {
        height: 160px;
    }

    .ade-flashcard-grid__card-front,
    .ade-flashcard-grid__card-back {
        padding: var(--ade-space-md);
    }

    .ade-flashcard-grid__card-front .ade-flashcard-grid__card-content {
        font-size: 16px;
    }

    .ade-flashcard-grid__card-back .ade-flashcard-grid__card-content {
        font-size: 15px;
    }
}

/* Print */
@media print {
    .ade-flashcard-grid {
        box-shadow: none;
        border: 1px solid var(--ade-gray);
    }

    .ade-flashcard-grid__card-inner {
        transform: none !important;
    }

    .ade-flashcard-grid__card-front,
    .ade-flashcard-grid__card-back {
        position: relative;
        backface-visibility: visible;
        page-break-inside: avoid;
        margin-bottom: var(--ade-space-md);
    }

    .ade-flashcard-grid__card-front {
        background: transparent;
        color: var(--ade-gray-dark);
        border: 2px solid var(--ade-primary);
    }

    .ade-flashcard-grid__card-back {
        transform: none;
    }

    .ade-flashcard-grid__flip-hint {
        display: none;
    }

    .ade-flashcard-grid__progress {
        display: none;
    }
}