* {
    padding: 0;
    margin: 0;

    font-family: "Inter", sans-serif;
}

:root {
    --puple: #652CD1;
    --light-purple: #845EEE;
    --dark: #121826;
    --dark-blue: #212936;
    --gray: #394150;
    --light-gray: #a1a1a9;
    --grayfont: #4d5562;
    --other: #e5e7eb;

}

main::before {
    content: '';
    position: absolute;
    width: 50%;
    top: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at bottom right, #652CD1 -75%, #121826 33%, #121826 75%);
    z-index: -1;
}

main {
    height: 100vh;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

main::after {
    content: '';
    position: absolute;
    width: 50%;
    top: 0;
    left: 0;
    bottom: 0;
    background: radial-gradient(circle at top left, #652CD1 -45%, #121826 33%, #121826 75%);
    z-index: -1;
}

section {
    border: 2px solid var(--gray);
    background-color: var(--dark-blue);
    color: var(--light-gray);
    padding: 40px;
    display: flex;
    flex-direction: column;
    border-radius: 10px;
    width: 500px;
}

.registration {
    /* display: none; */
    position: relative;
    gap: 20px;
}

.registration input {
    background-color: var(--dark-gray);
    padding: 10px;
    border: 2px solid var(--gray);
    outline: none;
    border-radius: 10px;
}

h1 {
    font-size: 20px;
    margin: 15px 0px;
    color: var(--other);
}

.form {
    display: flex;
    flex-direction: column;
    gap: 15px;

}

.submit-btn {
    background-image: linear-gradient(to top, #652CD1, #845EEE);
    color: var(--other);
    border: none;
    border-radius: 25px;
    width: 125px;
    padding: 10px 20px;
    margin-top: 15px;
    position: relative;
    /* top: 0; */
    left: 50%;
    transform: translate(-50%);
}

.interest-topics {
    display: none;
}

.list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 0;
}

.list>li {
    background-color: var(--gray);
    border-radius: 15px;
    padding: 15px;
    border: 1px solid var(--grayfont);
    color: var(--light-gray);
    list-style: none;
    cursor: pointer;
    transition: 0.2s;
}

.list>li:hover {
    background-color: var(--light-purple);
}

.list>li.active {
    background-color: var(--puple);
    color: var(--other);
}

.summary {
    display: none;
    flex-direction: column;
    gap: 15px;
}

.user-name,
.topics-list, .user-email, input {
    color: var(--other);
    font-weight: 600;
}

.footer {
    display: flex;
    justify-content: center;
    gap: 20px;
    color: var(--grayfont);
}

.steps {
    display: flex;
}

.step-btn {
    display: block;
    background-color: var(--gray);
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin: 10px;
}

.step-btn.active {
    background-color: var(--light-purple);
    box-shadow: 0px 0px 0px 5px #845eee61;
    border-radius: 50%;
}