body {
    position: absolute;
    inset: 0;
    margin: 0;
    padding-bottom: 40px;
    display: flex;
    flex-direction: column;
    font-family: sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue';
}

header {
    box-sizing: border-box;
    min-height: 48px;
    padding: 8px 1rem;
    background-color: #fff;
    box-shadow: 0 0 4px 0 #4444;
    display: inline-flex;
    align-items: center;
    font-size: 28px;
}

header>#app-status {
    flex: 1 1 0;
    display: inline-flex;
    justify-content: center;
    flex-wrap: wrap;
    font-size: large;
}

header>a>i {
    color: #000;
}

.content {
    min-height: calc(calc(100% - 48px) / 2);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1 1 0;
}

.content>i {
    font-size: 80px;
    width: 160px;
    height: 160px;
    border-radius: 100%;
    background-color: #1134;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #f8f8f8;
    margin-bottom: 30px;
}

.content>i.phone-on {
    outline: 0px solid transparent;
    animation: ripple-pulse 2s infinite;
    background-color: #1518;
}

@keyframes ripple-pulse {

    0% {
        box-shadow: 0 0 0 0 #8f9;
    }

    40% {
        box-shadow: 0 0 0 24px transparent;
    }

    41% {
        box-shadow: none;
    }
}

.content>#target-text {
    font-size: 40px;
    font-weight: bold;
}

.content>#detail-text {
    background-color: #1121;
    border-radius: 12px;
    flex: 0 1 50px;
    justify-content: center;
    display: flex;
    min-width: fit-content;
    width: 200px;
    margin: 12px;
    padding: 8px;
    flex-wrap: wrap;
}

.action-container {
    flex: 0 0 fit-content;
    display: flex;
    justify-content: center;
    padding: 8px;
}

.action-container>.action {
    border-width: 0;
    padding: 8px 4px;
    border-radius: 6px;
    cursor: pointer;
    outline-style: none !important;
    background-color: transparent;
    min-width: 200px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 24px;
    color: #666;
}

.action-container>.action:disabled {
    position: relative;
}

.action-container>.action:disabled::before {
    content: '';
    position: absolute;
    inset: 0;
    background-color: #fffa;
    z-index: 10;
    cursor: not-allowed;
}

.action-container>.action:not(:disabled):hover {
    background-color: #1122;
}

.action-container>.action>i {
    font-size: 48px;
}

@media (max-width: 767.98px) {
    body {
        padding: 0;
    }

    header {
        min-height: 10vh;
    }

    .content {
        min-height: 0;
    }

    .action-container {
        justify-content: space-around;
    }

    .action-container>.action {
        min-width: 28vw;
    }
}