body {
    --radar-size: 200px;
    --page-padding: clamp(12px, 2vw, 20px);

    background-color: #1a1a1a;
    color: #e0e0e0;
    font-family: sans-serif;
    margin: 0;
    padding: 20px;
    padding: var(--page-padding);
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #333;
    padding-bottom: 10px;
    gap: 12px;
    border-bottom: 1px solid #333;
    padding-bottom: 10px;
    margin-bottom: 20px;
}

a {
    color: #4ade80;
    text-decoration: none;
}

.radar-scan {
    width: 200px;
    height: 200px;
    width: min(var(--radar-size), calc(100vw - (var(--page-padding) * 2)));
    aspect-ratio: 1;
    border: 2px solid #4ade80;
    border-radius: 50%;
    position: relative;
    margin: 20px auto;
    background: radial-gradient(circle, rgba(74, 222, 128, 0.1) 0%, rgba(0,0,0,0) 70%);
}

.blip {
    width: 10px;
    height: 10px;
    background: #4ade80;
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    animation: blip 2s infinite;
}

@keyframes blip {
    0% { transform: scale(0.5); opacity: 1; }
    100% { transform: scale(3); opacity: 0; }
}

@media (max-width: 640px) {
    body {
        --radar-size: 160px;
    }

    header {
        flex-wrap: wrap;
        align-items: flex-start;
        padding-bottom: 8px;
        margin-bottom: 16px;
    }

    .radar-scan {
        margin: 16px auto;
    }
}