.source-link-form {
    width: min(680px, calc(100vw - 40px));
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 0;
    padding: 7px;

    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 999px;

    background: rgba(255, 255, 255, 0.07);

    box-shadow:
        0 0 0 1px rgba(255, 255, 255, 0.04) inset,
        0 18px 55px rgba(0, 0, 0, 0.45),
        0 0 45px rgba(255, 255, 255, 0.08);

    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.source-link-form input[type="text"] {
    flex: 1 1 auto;
    min-width: 0;

    height: 58px;
    margin: 0;
    padding: 0 70px 0 24px;

    border: 0;
    outline: 0;
    border-radius: 999px;

    background: rgba(255, 255, 255, 0.96);
    color: #222;

    font-size: 18px;
    line-height: 1;

    box-shadow: none;
}

.source-link-form input[type="text"]::placeholder {
    color: #666;
    opacity: 1;
}

.source-link-form input[type="text"]:focus {
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.18);
}

/* Search button */

.source-link-submit {
    flex: 0 0 58px;

    width: 58px;
    height: 58px;

    margin-left: -58px;
    padding: 0;

    border: 0;
    border-radius: 50%;

    display: inline-flex;
    align-items: center;
    justify-content: center;

    cursor: pointer;

    background: #111;
    color: #fff;

    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.38);

    transition:
        background 0.2s ease,
        transform 0.2s ease,
        box-shadow 0.2s ease;
}

.source-link-submit:hover,
.source-link-submit:focus-visible {
    background: #222;

    transform: scale(1.04);

    box-shadow:
        0 6px 22px rgba(0, 0, 0, 0.5);
}

/* Search icon */

.source-link-search-icon {
    width: 25px;
    height: 25px;

    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;

    transition: transform 0.45s ease;
}

.source-link-submit:hover .source-link-search-icon,
.source-link-submit:focus-visible .source-link-search-icon {
    transform: rotate(360deg);
}

/* Accessibility */

@media (prefers-reduced-motion: reduce) {
    .source-link-search-icon,
    .source-link-submit {
        transition: none;
    }
}

/* Mobile */

@media (max-width: 520px) {

    .source-link-form {
        width: calc(100vw - 24px);
        padding: 5px;
    }

    .source-link-form input[type="text"] {
        height: 50px;
        padding: 0 60px 0 18px;
        font-size: 16px;
    }

    .source-link-submit {
        flex-basis: 50px;
        width: 50px;
        height: 50px;
        margin-left: -50px;
    }

    .source-link-search-icon {
        width: 22px;
        height: 22px;
    }
}