.indicator-container {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    border: 2px solid #ccc;
    border-radius: 50%;
    background-color: #fff;
}

.indicator {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0,0,0,0.1) 20%, rgba(255,255,255,1) 70%);
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.2);
    transition: background-color 0.3s, box-shadow 0.3s;
}

.indicator.default {
    background-color: #ccc;
}

.indicator.normal {
    background-color: #0f0;
    box-shadow: 0 0 15px 10px rgba(0, 255, 0, 0.6);
}

.indicator.error {
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 100% {
        background-color: #ccc;
        box-shadow: 0 0 15px rgba(0, 0, 0, 0.2);
    }
    50% {
        background-color: #f00;
        box-shadow: 0 0 15px 10px rgba(255, 0, 0, 0.6);
    }
}