.service-flip-card {
    position: relative;
    height: 300px;
    perspective: 1000px;
    cursor: pointer;
    margin-bottom: 30px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.service-flip-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

.service-flip-card.flipped .service-flip-inner {
    transform: rotateY(180deg);
}

.service-flip-front,
.service-flip-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 8px;
    overflow: hidden;
}

.service-flip-front {
    background-color: #fff;
}

.service-flip-back {
    background-color: #fff;
    transform: rotateY(180deg);
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    box-sizing: border-box;
}

.service-flip-card.flipped .service-flip-front {
    pointer-events: none;
}

.service-flip-back {
    pointer-events: auto;
}

.service-flip-image {
    width: 100%;
    height: 100%;
    position: relative;
}

.service-flip-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s ease;
}

.service-flip-image::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0.3),
        rgba(0, 0, 0, 0.5) 50%,
        rgba(0, 0, 0, 0.7)
    );
    z-index: 1;
}

.service-flip-title {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: calc(100% - 40px);
    padding: 20px;
    color: white !important;
    text-align: center;
    z-index: 2;
    box-sizing: border-box;
}

.service-flip-title h4 {
    margin: 0;
    font-size: 2rem;
    font-weight: 700;
    color: white !important;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8), 0 0 20px rgba(0, 0, 0, 0.5),
        0 0 40px rgba(0, 0, 0, 0.3);
    letter-spacing: 1px;
    text-transform: uppercase;
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
    line-height: 1.2;
}

.service-flip-icon {
    text-align: center;
    margin-bottom: 15px;
    flex-shrink: 0;
}

.service-flip-icon i {
    font-size: 2.5rem;
    color: #007bff;
    max-width: 100%;
}

.service-flip-back h4 {
    text-align: center;
    margin-bottom: 15px;
    color: #333;
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
    line-height: 1.3;
    flex-shrink: 0;
}

.service-flip-back p {
    text-align: justify;
    margin-bottom: 20px;
    color: #666;
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
    line-height: 1.5;
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    max-height: calc(100% - 140px);
    padding-right: 5px;
    scrollbar-width: thin;
    scrollbar-color: #ccc transparent;
}

/* Custom scrollbar cho webkit browsers */
.service-flip-back p::-webkit-scrollbar {
    width: 4px;
}

.service-flip-back p::-webkit-scrollbar-track {
    background: transparent;
}

.service-flip-back p::-webkit-scrollbar-thumb {
    background-color: #ccc;
    border-radius: 2px;
}

.service-flip-back p::-webkit-scrollbar-thumb:hover {
    background-color: #999;
}

.service-flip-button {
    text-align: center;
    flex-shrink: 0;
    width: 100%;
}

.service-flip-button .btn {
    padding: 8px 16px;
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
    box-sizing: border-box;
}

.service-flip-card:hover .service-flip-image img {
    transform: scale(1.05);
}

@media screen and (max-width: 991px) {
    .service-flip-card {
        height: 280px;
        margin-bottom: 25px;
    }

    .service-flip-title {
        width: calc(100% - 30px);
        padding: 15px;
    }

    .service-flip-title h4 {
        font-size: 1.8rem;
        line-height: 1.2;
    }

    .service-flip-icon i {
        font-size: 2.2rem;
    }

    .service-flip-back p {
        max-height: calc(100% - 120px);
    }
}

@media screen and (max-width: 767px) {
    .service-flip-card {
        height: 250px;
        margin-bottom: 20px;
    }

    .service-flip-back {
        padding: 15px;
    }

    .service-flip-title {
        width: calc(100% - 30px);
        padding: 15px;
    }

    .service-flip-title h4 {
        font-size: 1.6rem;
        line-height: 1.2;
        letter-spacing: 0.8px;
    }

    .service-flip-icon {
        margin-bottom: 12px;
    }

    .service-flip-icon i {
        font-size: 2rem;
    }

    .service-flip-back h4 {
        font-size: 1.1rem;
        margin-bottom: 10px;
        line-height: 1.3;
    }

    .service-flip-back p {
        font-size: 0.9rem;
        margin-bottom: 15px;
        line-height: 1.4;
        max-height: calc(100% - 110px);
    }

    .service-flip-button .btn {
        padding: 6px 12px;
        font-size: 0.85rem;
    }

    /* Cải thiện touch interaction cho mobile */
    .service-flip-card {
        touch-action: manipulation;
    }
}

@media screen and (max-width: 576px) {
    .service-flip-card {
        height: 220px;
        margin-bottom: 15px;
    }

    .service-flip-back {
        padding: 12px;
    }

    .service-flip-title {
        width: calc(100% - 24px);
        padding: 12px;
    }

    .service-flip-title h4 {
        font-size: 1.4rem;
        line-height: 1.1;
        letter-spacing: 0.6px;
    }

    .service-flip-icon {
        margin-bottom: 10px;
    }

    .service-flip-icon i {
        font-size: 1.8rem;
    }

    .service-flip-back h4 {
        font-size: 1.05rem;
        margin-bottom: 8px;
        line-height: 1.2;
    }

    .service-flip-back p {
        font-size: 0.87rem;
        margin-bottom: 12px;
        line-height: 1.3;
        max-height: calc(100% - 100px);
    }

    .service-flip-button .btn {
        padding: 5px 10px;
        font-size: 0.8rem;
    }
}

@media screen and (max-width: 480px) {
    .service-flip-card {
        height: 200px;
        margin-bottom: 15px;
    }

    .service-flip-back {
        padding: 10px;
    }

    .service-flip-title {
        width: calc(100% - 20px);
        padding: 10px;
    }

    .service-flip-title h4 {
        font-size: 1.3rem;
        line-height: 1.1;
        letter-spacing: 0.4px;
    }

    .service-flip-icon {
        margin-bottom: 8px;
    }

    .service-flip-icon i {
        font-size: 1.6rem;
    }

    .service-flip-back h4 {
        font-size: 1rem;
        margin-bottom: 6px;
        line-height: 1.2;
    }

    .service-flip-back p {
        font-size: 0.85rem;
        margin-bottom: 10px;
        line-height: 1.3;
        max-height: calc(100% - 90px);
    }

    .service-flip-button .btn {
        padding: 4px 8px;
        font-size: 0.75rem;
    }

    /* Tối ưu cho màn hình nhỏ */
    .service-flip-inner {
        transition: transform 0.4s ease-out;
    }
}

@media screen and (max-width: 375px) {
    .service-flip-card {
        height: 180px;
        margin-bottom: 12px;
    }

    .service-flip-back {
        padding: 8px;
    }

    .service-flip-title {
        width: calc(100% - 16px);
        padding: 8px;
    }

    .service-flip-title h4 {
        font-size: 1.1rem;
        line-height: 1;
        letter-spacing: 0.2px;
    }

    .service-flip-icon {
        margin-bottom: 6px;
    }

    .service-flip-icon i {
        font-size: 1.4rem;
    }

    .service-flip-back h4 {
        font-size: 0.95rem;
        margin-bottom: 5px;
        line-height: 1.1;
    }

    .service-flip-back p {
        font-size: 0.8rem;
        margin-bottom: 8px;
        line-height: 1.2;
        max-height: calc(100% - 80px);
    }

    .service-flip-button .btn {
        padding: 3px 6px;
        font-size: 0.7rem;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    .service-flip-card:hover .service-flip-image img {
        transform: none;
    }

    .service-flip-card {
        transition: transform 0.2s ease;
    }

    .service-flip-card:active {
        transform: scale(0.98);
    }
}