.challenge-select {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.challenge-select > h1 {
    margin: 1rem 0 0 0;
    font-size: 3rem;
}

.challenge-select > h3 {
    margin: 0 0 2rem;
    color: var(--grey);
    width: 50%;
    text-align: center;
}

.challenge-cards {
    display: flex;
    justify-content: space-around;
    width: 100%;
}

.challenge-card {
    width: 20%;
    border: 4px solid var(--green);
    border-radius: 1rem;
    text-align: center;
    padding: 1rem;
    display: flex;
    align-self: flex-start;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
}

.challenge-card > h2 {
    margin: 0;
    font-size: 1.75rem;
}

.challenge-card > h3 {
    margin: 0 0 1rem 0;
    color: var(--grey);
}

.challenge-card > .button {
    width: 80%;
}

.challenge-card > img {
    border: 1px solid var(--green);
    width: 90%;
}

.challenge-page {
    width: 100%;
    height: 80%;
    padding: 0 1vw;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
}

.challenge-header {
    margin-bottom: 0.5rem;
}

.challenge-header > h1,
.challenge-header > h3,
.challenge-header > p {
    margin: 0;
    text-align: center;
}

.challenge-body {
    width: 100%;
    flex: 1;
    display: flex;
    gap: 2vw;
}

.challenge-frame {
    width: 80vw;
    height: calc(70vw * (9/16));
    background-color: #1e1e1e;
    position: relative;
    margin: 6px;
    border-radius: calc(1rem - 6px);
}

@property --angle {
    syntax: "<angle>";
    initial-value: 0deg;
    inherits: false;
}

.challenge-frame::after, .challenge-frame::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: conic-gradient(from var(--angle), var(--dark-green), var(--green), var(--dark-green));
    top: 50%;
    left: 50%;
    translate: -50% -50%;
    z-index: -1;
    padding: 6px;
    border-radius: 1rem;
    animation: 10s spin linear infinite;
}

@keyframes spin {
    from {
        --angle: 0deg;
    }
    to {
        --angle: 360deg;
    }
}

.challenge-frame::before {
    filter: blur(1.5rem);
    opacity: 0.75;
}

.challenge-frame > iframe {
    width: 100%;
    height: 100%;
    border: none;
    border-radius: calc(1rem - 6px);
}

.xss-custom {
    width: 40%;
    margin: 0.5rem;
}

.challenge-loading {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    text-align: center;
}

.challenge-objectives {
    width: 25%;
}

.flag {
    margin-bottom: 1rem;
}

.flag > form {
    display: flex;
    gap: 0.5rem;
}

.flag .form-input {
    width: 75%;
}

.flag .form-input input {
    width: 100%;
}

.flag .submit {
    flex: 1;
    padding: 0.5rem 1rem;
}

.flag > h3 {
    margin: 0;
}

.flag > p {
    margin: 0.5rem 0 0.5rem 0;
}

.hint {
    cursor: pointer;
    margin: 0.5rem 0    ;
}

.hint > h4 {
    user-select: none;
}

.hint > h4, .hint > p {
    margin: 0;
    pointer-events: all;
}

.hint > p {
    cursor: text;
}

.challenge-buttons {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.challenge-buttons > .button {
    font-size: 1rem;
    padding: 0.25rem 0.75rem;
}