/* ==========================================
   STYLE DES FLASHCARDS (3D FLIP)
   ========================================== */

.flashcard-scene {
    width: 100%;
    max-width: 360px;
    height: 280px;
    margin: 20px auto 30px auto;
    perspective: 1000px; /* Effet de profondeur 3D */
}

.flashcard-inner {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

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

.flashcard-front,
.flashcard-back {
    position: absolute;
    inset: 0;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    border-radius: 20px;
    border: 2px solid var(--border);
    background-color: var(--cream);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 25px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.03);
    user-select: none;
}

.flashcard-front {
    background-color: #ffffff;
}

.flashcard-back {
    background-color: var(--cream);
    transform: rotateY(180deg);
}

.flashcard-hint-tag {
    position: absolute;
    top: 15px;
    left: 20px;
    font-size: 11px;
    font-weight: 700;
    color: var(--muted);
    letter-spacing: 1px;
}

.flashcard-char {
    font-size: 80px;
    font-family: var(--font-hanzi);
    color: var(--ink);
    font-weight: bold;
    line-height: 1;
}

.flashcard-pinyin {
    font-size: 26px;
    font-weight: 700;
    color: var(--terracotta);
    margin-bottom: 6px;
}

.flashcard-meaning {
    font-size: 20px;
    font-weight: 600;
    color: var(--ink);
}

/* Commandes sous la carte */
.flashcard-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.flashcard-controls button {
    padding: 10px 20px;
    font-size: 15px;
}

.flashcard-controls button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
}

/* Mots composés : on réduit la taille selon le nombre de caractères */
.flashcard-char[data-length="3"] { font-size: 62px; }
.flashcard-char[data-length="4"] { font-size: 48px; }
.flashcard-char[data-length="5"],
.flashcard-char[data-length="6"] { font-size: 38px; }