* {
    font-family: 'Poppins', Verdana, Geneva, Tahoma, sans-serif, Georgia, 'Times New Roman', Times, serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-weight: 400;
}

:root {
    --main-color: #19a3d0;
}

main {
    background-color: var(--main-color);
    padding: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    height: 100dvh;
}

main button {
    padding: 10px 0;
    border-radius: 7px;
    border: none;
    outline: none;
    transition: 0.3s;
    width: 110px;
    font-size: 15px;
    background-color: #effbff;
    color: var(--main-color);
    letter-spacing: 1px;
}

main button:hover {
    background-color: #dcf6ff;
}

button:active {
    transform: scale(0.98);
}

.pop-up-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
    visibility: hidden;
    transition: 0.1s;
}

.pop-up-wrapper {
    transform: scale(0.8);
    transform: translateY(10px);
    transition: 0.5s;
    opacity: 0;
    width: 90%;
    max-width: 400px;
    position: relative;
    overflow: hidden;
}

.pop-up-container.active {
    visibility: visible;
}

.pop-up-container.active .pop-up-wrapper {
    transform: scale(1);
    opacity: 1;
    transform: translateY(0);
}

.pop-up-wrapper {
    flex: 1 1 300px;
    background-color: transparent;
    margin: 30px;
    height: 500px;
    perspective: 1000px;
    z-index: 0;

}

.pop-up-inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform 0.6s;
    transform-style: preserve-3d;

}

.pop-up-front,
.pop-up-back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    background-color: white;
}

.pop-up-back {
    transform: rotateY(180deg);
    box-sizing: border-box;
}

.pop-up-inner.active {
    transform: rotateY(-180deg);
}

form {
    padding: 15px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    justify-content: center;
    box-shadow: 0 0 10px white;
    position: relative;
}

form h1 {
    font-weight: 600;
}

.input-box {
    width: 100%;
    text-align: left;
}

.input-box label {
    font-size: 13px;
}

input {
    width: 100%;
    margin-top: 7px;
    padding: 10px;
    border: 2px solid black;
}

form a,
form p {
    font-size: 13px;
    color: gray;
    margin: 5px 0;
}

form p span {
    text-decoration: underline;
    cursor: pointer;
}

form input[type='submit'] {
    padding: 10px 0;
    border-radius: 0;
    border: none;
    outline: none;
    font-size: 15px;
    letter-spacing: 1px;
    width: 100%;
    background-color: rgb(49, 49, 49);
    color: white;
}

form input[type='submit']:hover {
    background-color: black;
}

form a:hover,
form p span:hover {
    color: black;
}

.close-btn {
    position: absolute;
    top: 5px;
    right: 5px;
    height: 30px;
    font-size: 20px;
    padding-block: auto;
    width: 30px;
    text-align: center;
    border: 2px solid black;
    background-color: transparent;
    color: black;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    cursor: pointer;
}

.close-btn:hover {
    background-color: black;
    color: white;
}