body {
    margin: 0;
    min-height: 100vh;
    background: #f7f7f5;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    font-family: "Space Mono", monospace;
    color: #e7e2d2;
    padding-top: 80px;
}

#powerBtn {
    align-self: flex-start;
    margin-left: 20px;
    padding: 14px 24px;
    font-size: 18px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    color: #e7e2d2;
    background: #c1443c; /* red - off state, default */
    transition: background 0.2s ease;
}

#powerBtn.on {
    background: #4a8c5f; /* green - on state */
}

button, input, select, textarea {
    font-family: inherit;
}

.radio {
    background: #000000;
    padding: 24px;
    border-radius: 6px;
    width: 400px;
    -webkit-user-select: none;
    user-select: none;
}

.readout {
    background: #070803;
    padding: 14px 16px;
    border-radius: 3px;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 22px;
}

.freq-num {
    font-family: "DSEG7 Classic", "Space Mono", monospace;
    font-weight: 700;
    font-size: 40px;
    color: #f6f6f2;
    white-space: nowrap;
}

.status {
    font-size: 11px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: #f8f8f5;
}

.dial-track {
    position: relative;
    height: 64px;
    background: #0a0b06;
    border-radius: 3px;
    margin: 0px 4px;
    -webkit-user-select: none;
    user-select: none;
}

.dial-track:focus-visible {
    outline: 2px solid #f2a13d;
    outline-offset: 2px;
}

.needle {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #c1443c;
}

.tick {
    position: absolute;
    bottom: 0;
    width: 1px;
    height: 12px;
    background: #26271a;
}

.tick-label {
    position: absolute;
    top: 6px;
    font-size: 9px;
    color: #f9f9f7;
    transform: translateX(-50%);
}