html,
body {
    min-height: 100%;
    margin: 0;
    padding: 0;
    background: #101214;
    color: #f8f8f8;
    font-family: Arial, Helvetica, sans-serif;
}

button {
    font: inherit;
}

.controlPanel {
    max-width: 420px;
    margin: 0 auto;
    padding: 18px;
}

.topBar {
    display: table;
    width: 100%;
    margin: 8px 0 4px 0;
}

h1 {
    display: table-cell;
    margin: 0;
    font-size: 30px;
    font-weight: bold;
    line-height: 1.15;
    vertical-align: middle;
}

.backToAppsButton {
    display: table-cell;
    width: 1%;
    min-width: 88px;
    padding: 7px 9px;
    border: 1px solid #3a4147;
    border-radius: 999px;
    background: #1a1f24;
    color: #dce4ea;
    font-size: 12px;
    line-height: 1.1;
    text-align: center;
    text-decoration: none;
    white-space: nowrap;
    vertical-align: middle;
}

.backToAppsButton:active {
    background: #28313a;
}

.roomInfo {
    margin: 0 0 18px 0;
    color: #b8c1c8;
    font-size: 15px;
}

.controlPanel button {
    display: block;
    width: 100%;
    min-height: 76px;
    margin: 0 0 14px 0;
    padding: 0 18px;
    border: 1px solid #d7dee4;
    border-radius: 6px;
    background: #f3f6f8;
    color: #111;
    font-size: 21px;
    font-weight: bold;
    line-height: 1.2;
    text-align: center;
    cursor: pointer;
}

.controlPanel button:active {
    background: #cfd8df;
}

.infoPanel {
    margin: 18px 0 0 0;
    padding: 14px 15px;
    border: 1px solid #2d353b;
    border-radius: 6px;
    background: #171c20;
    color: #d0d8de;
    font-size: 14px;
    line-height: 1.45;
}

.infoPanel p {
    margin: 0 0 10px 0;
}

.infoPanel p:last-child {
    margin-bottom: 0;
}

.status {
    min-height: 24px;
    margin-top: 16px;
    color: #b8c1c8;
    font-size: 15px;
    line-height: 1.4;
}

@media (max-width: 360px) {
    .controlPanel {
        padding: 14px;
    }

    h1 {
        font-size: 26px;
    }

    .controlPanel button {
        min-height: 70px;
        font-size: 19px;
    }
}