* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background: #000;
    color: #fff;
    font-family: monospace;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100dvh;
    gap: 24px;
}

h1 {
    font-size: 1.1rem;
    letter-spacing: 0.1em;
    opacity: 0.5;
}

#status {
    font-size: 1rem;
    opacity: 0.7;
}

#volume-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.85rem;
    opacity: 0.7;
}

#volume {
    -webkit-appearance: none;
    appearance: none;
    width: 120px;
    height: 2px;
    background: #fff;
    outline: none;
    cursor: pointer;
}

#volume::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    background: #fff;
    border-radius: 50%;
}

#volume::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: #fff;
    border: none;
    border-radius: 50%;
}

#btn {
    font-family: monospace;
    font-size: 1rem;
    background: none;
    border: 1px solid #fff;
    color: #fff;
    padding: 12px 32px;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

#btn:active {
    opacity: 0.5;
}