body {
    margin: 0;
    height: 100vh;
    background: #f3f4f6;
}

.main-container {
    display: flex;
    align-items: center;
    height: 100vh;
    justify-content: center;
    gap: 200px;
}

.card-perspective {
    perspective: 1000px;
}

.card-container {
    display: flex;
    flex-direction: column;
    background-image: url(card-background.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    width: 620px;
    border-radius: 30px;
    min-height: 370px;
    box-shadow: 0 25px 60px rgba(0,0,0,.18);
    user-select: none;
    transition: transform 0.6s;
    transform-style: preserve-3d;
    position: relative;
}

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

.card-front {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
}

.card-back {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    transform: rotateY(180deg);
}

.card-top-container {
    display: flex;
}

.card-brand-name {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 25px;
    font-family: "Inter", sans-serif;
    color: aliceblue;
    font-size: 24px;
    margin-left: 10px;
    font-weight: 400;
}

.card-brand-logo img {
    height: 70px;
    padding-top: 25px;
    padding-left: 25px;
}

.card-chip {
    display: flex;
    margin-left: auto;
    padding-right: 45px;
}

.card-chip img {
    padding-top: 35px;
    height: 50px;
}

.card-number-container {
    display: flex;
    flex-direction: column;
}

.card-number-name {
    color: aliceblue;
    padding-left: 35px;
    font-family: "Inter", sans-serif;
    font-size: 18px;
    font-weight: 300;
    margin-top: 70px;
}

.card-number {
    color: aliceblue;
    padding-left: 35px;
    font-family: "Sansation", sans-serif;
    font-weight: 700;
    font-size: 24px;
    letter-spacing: 5px;
}

.card-information-container {
    display: flex;
}

.card-information-name {
    color: aliceblue;
    padding-left: 35px;
    font-family: "Inter", sans-serif;
    font-size: 24px;
    font-weight: 400;
    margin-top: 50px;
    padding-bottom: 35px;
}

.card-validation-date-container {
    display: flex;
    flex-direction: column;
    margin-left: auto;
}

.card-validation-date-name {
    color: aliceblue;
    font-size: 18px;
    font-family: "Inter", sans-serif;
    font-weight: 300;
    margin-right: 55px;
    margin-top: 30px;
}

.card-validation-date {
    color: aliceblue;
    font-size: 24px;
    font-family: "Inter", sans-serif;
    font-weight: 500;
    letter-spacing: 2px;
    margin-bottom: 40px;
}

.separation-line {
    width: 1px;
    height: 80%;
    border-left: 1px solid rgba(0,0,0,.08);
}

.form-container {
    display: flex;
    flex-direction: column;
}

.form-name {
    font-family: "Inter", sans-serif;
    font-weight: 300;
    font-size: 32px;
}

.cardholder-name-title {
    font-size: 12px;
    font-family: "Inter", sans-serif;
    font-weight: 500;
    margin-bottom: 12px;
    margin-top: 40px;
}

.cardholder-number-title {
    font-size: 12px;
    font-family: "Inter", sans-serif;
    font-weight: 500;
    margin-bottom: 12px;
    margin-top: 40px;
}

.cardholder-expiry-date-title {
    font-size: 12px;
    font-family: "Inter", sans-serif;
    font-weight: 500;
    margin-bottom: 12px;
    margin-top: 40px;
}

.cardholder-cvc-title {
    font-size: 12px;
    font-family: "Inter", sans-serif;
    font-weight: 500;
    margin-bottom: 12px;
    margin-top: 40px;
}

.cardholder-input-group {
    display: flex;
    align-items: flex-end;
    border-bottom: 2px solid #EB4152;
    width: 400px;
    padding-bottom: 10px;
}

input {
    background: transparent;
    border: none;
    color: #111827;
    font-size: 15px;
    width: 100%;
    color: #000000;
    font-size: 18px;
    font-family: "Inter", sans-serif;
    font-weight: 300;
    padding-bottom: 0;
    padding-left: 10px;
}

input::placeholder {
    color: #b9b9b9;
    font-size: 18px;
    font-family: "Inter", sans-serif;
    font-weight: 300;
}

input:focus {
    outline: none;
}

.cardholder-input-group svg {
    color: #EB4152;
    border: none;
    padding-bottom: 0;
}

.cardholder-pay-button {
    display: flex;
    justify-content: center;
    margin-top: 60px;
}

.cardholder-pay-button button {
    height: 50px;
    width: 200px;
    border: none;
    background-color: #EB4152;
    color: #ffffff;
    font-size: 16px;
    font-family: "Inter", sans-serif;
    font-weight: 700;
    letter-spacing: 2px;
    border-radius: 10px;
    transform: scale(1);
    transition: transform 200ms ease;
}

.cardholder-pay-button button:hover {
    transform: scale(1.03);
}

.black-strip {
    width: 100%;
    border-bottom: 85px solid black;
    margin-top: 50px;
}

.cvc-strip-container {
    display: flex;
    justify-content: center;
}

.white-cvc-strip {
    background-color: #ffffff;

    background-image: linear-gradient(
        to bottom,
        #e1e8ed 0px,
        #e1e8ed 2px,
        transparent 2px,
        transparent 24px
    );

    background-size: 100% 10px;
    width: 80%;
    min-height: 50px;
    margin-top: 40px;
}

.cvc-number {
    background-color: #ffffff;
    margin-top: 40px;
    width: 10%;
    font-family: "Sansation", sans-serif;
    font-weight: 300;
    justify-content: center;
    align-items: center;
    display: flex;
}

.card-number-back {
    color: aliceblue;
    padding-left: 35px;
    font-family: "Sansation", sans-serif;
    font-weight: 700;
    font-size: 24px;
    letter-spacing: 5px;
    transform: rotateY(180deg);
    display: inline-block;
    margin-top: 40px;
    text-align: center;
    width: 100%;
    letter-spacing: 5px;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.8s ease-out forwards;
}