/* Approach Section */
#approach {
    padding: 100px 0;
}

#approach h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #E4ECFF;
    margin-bottom: 3rem;
    font-family: 'Inter', sans-serif;
    font-weight: bold;
}

#approach h2 span {
    color: #CBACF9;
}

.approach-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.approach-card-container {
    perspective: 1000px;
    position: relative;
    height: 520px;
}

.approach-card-shadow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 23px;
    box-shadow: 0 0 30px rgba(203, 172, 249, 0.5);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.approach-card-container:hover .approach-card-shadow {
    opacity: 1;
}

#approach .parallax-card {
    transition: transform 0.1s ease-out;
    will-change: transform;
}

.approach-card {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.6s; /* No box-shadow here */
    cursor: pointer;
}

.approach-card-container.is-flipped .approach-card {
    transform: rotateY(180deg);
}

.card-face {
    position: absolute;
    width: 100%;
    height: 520px;
    backface-visibility: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-radius: 23px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-sizing: border-box;
}

.card-front {
    background-color: #1A1A2E; /* Restore card background */
}

.card-front .phase-button {
    background-color: rgba(26, 26, 46, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 1rem 2rem;
    border-radius: 18px;
}

.card-front .front-main-title {
    font-size: 1.6rem;
    color: #E4ECFF;
    margin-top: 1.5rem;
    padding: 0 1rem;
    text-align: center;
}

.card-front h3 {
    font-family: 'Inter', sans-serif;
    font-size: 20px;
    color: #CBACF9;
    margin: 0;
}

.card-back {
    background-color: #1A1A2E;
    transform: rotateY(180deg);
    padding: 2rem;
    text-align: center;
}

.card-back h4 {
    background-color: #2a2a4e;
    color: #A9A9D0;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.card-back h3 {
    font-size: 1.8rem;
    color: #E4ECFF;
    margin: 0 0 1rem 0;
}

.card-back p {
    color: #A9A9D0;
    line-height: 1.6;
}

.corner-cross {
    position: absolute;
    width: 46px; /* Adjust size as needed */
    height: 46px;
    opacity: 0.5;
}

.top-left { top: -19px; left: -18px; }
.top-right { top: -19px; right: -18px; }
.bottom-left { bottom: -20px; left: -18px; }
.bottom-right { bottom: -20px; right: -18px; }

@media (max-width: 768px) {
    #approach {
        padding-top: 0;
        padding-bottom: 0;
    }

    .approach-grid {
        grid-template-columns: 1fr; /* Stack cards in a single column */
    }

    .approach-card-container, .card-face {
        height: auto; /* Let content define height */
        min-height: 250px; /* Set a minimum height */
    }

    .card-front h3 {
        font-size: 20px;
    }

    .card-back {
        padding: 1px;
    }

    .card-back h3 {
        font-size: 1.5rem;
    }

    #approach h2 {
        font-size: 30px;
    }
}