notebook {
    background-color: #080c08;
    border: 1px solid #0b110b;
}

notebook header {
    background-color: #131d13;
}

notebook tab {
    padding: 4px 8px;
    border: 1px solid transparent;
    border-radius: 8px 8px 0 0;
    transition: all 0.2s ease;
}

notebook tab:hover {
    background-color: #424a42;
}

notebook tab:checked {
    background-color: #080c08;
    border-color: #0b110b;
    border-bottom-color: transparent;
    border-bottom: 2px solid #1c7a44;
    box-shadow: inset 0 -2px 0 #1c7a44;
}

notebook tab label {
    font-weight: bold;
    color: #c0c0c0;
}