/* Card Flip Animations */

.perspective-1000 {
    perspective: 1000px;
}

/* transform-style: preserve-3d가 있어야 자식 요소들이 3D 공간에 배치됨 */
.transform-style-3d {
    transform-style: preserve-3d;
}

.backface-hidden {
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

/* 카드 몸체: 회전의 중심 */
.card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
    transform-style: preserve-3d;
}

/* 뒤집힌 상태 */
.card-inner.flipped {
    transform: rotateY(180deg);
}

.card-front, .card-back {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    border-radius: 1.5rem; /* 24px */
}

.card-front {
    z-index: 2;
    /* 앞면은 0도 */
    transform: rotateY(0deg);
}

.card-back {
    /* 뒷면은 미리 180도 돌려놓음 */
    transform: rotateY(180deg);
    z-index: 1;
}

.no-scrollbar::-webkit-scrollbar {
    display: none;
}
.no-scrollbar {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fadeIn {
    animation: fadeIn 0.3s ease-out forwards;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-slideUp {
    animation: slideUp 0.5s ease-out forwards;
}