@breiteMainBereich: 70rem;
@breiteTextBereich: 60rem;
@breiteNavBereich: @breiteMainBereich - @breiteTextBereich;

html {
    body {
        background: @mainColorLight;
        > header, > footer {
            color: @mainColorDark;
            background: @mainColor;
            font-family: serif;
            h1 {
                font-size: 3rem;
                text-align: center;
            }
            p {
                text-indent: inherit;
                &:first-letter {
                    font-size: inherit;
                }
                font-style: italic;
            }
        }
        > header h1 {
            margin: 1rem auto;
        }
        > footer {
            color: contrast(@mainColorDark);
        }
        & > nav {
            ul {
                background: darken(@mainColorLight,33%,relativ);
                li {
                    font-weight: bold;
                    &:not(:first-child) {
                        border-left: @mainColorDark solid thin;
                    }
                    a {
                        text-decoration: none;
                        color: @mainColorDark;
                    }
                    &:hover {
                        background: lighten(@mainColor,20%,relativ);
                        a {
                            color: lighten(@mainColor,66%,relativ);
                        }
                    }
                    &.selected, &.selected:hover {
                        background: lighten(@mainColor,10%,relativ);
                        a {
                            color: lighten(@mainColor,66%,relativ);
                        }
                    }
                }
            }
        }
    }
}

main {
    * {
        border-style: none;
        border-color: @mainColorDark;
        border-width: medium;
    }
    section {
        @sectionMargin: 1rem;
        h1, h2 {
            margin: @sectionMargin;
        }
        p, ul, ol, dl {
            margin: @sectionMargin;
            text-indent: @sectionMargin * 2;
        }
        table {
            thead {
                tr:last-child {
                    td, th {
                        border-bottom: @mainColor solid thin;
                    }
                }
            };
            tbody {
                td.absence-time {
                    color: @redColor;
                    text-decoration-line: underline;
                    text-decoration-style: dashed;
                }
            }
        }
        form {
            @formLabelWidth: 10rem;
            @formItemWidth: 40rem;
            nav.menu {
                width: @formItemWidth + @formLabelWidth + 4rem;
                border-color: @mainColor;
                border-bottom-style: solid;
                margin: 1rem auto;
                span {
                    border-color: @mainColor;
                    border-style: solid solid none;
                    padding: 0.5rem;
                    display: inline-block;
                    font-weight: bolder;
                    margin-right: 1rem;
                    &:first-child {
                        margin-left: 1.5rem;
                    }
                    &:hover {
                        background-color: darken(@mainColorLight,10%,relativ);
                    }
                    &.active {
                        background-color: darken(@mainColorLight,20%,relativ);
                    }
                }
            }
            fieldset {
                width: @formItemWidth + @formLabelWidth + 2rem;
                margin: 1rem auto;
                border-style: solid ;
                border-color: @mainColor;
                padding: @sectionMargin;
                &.tasten {
                    border: none;
                    background-color: @mainColorLight;
                }
                legend {
                    margin: @sectionMargin;
                    margin-left: @sectionMargin * 2;
                }
                div {
                    &  > label {
                        width: @formLabelWidth;
                        display: inline-block;
                        margin: 0.5rem;
                    }
                    input {
                        display: inline-block;
                        width: @formItemWidth;
                        padding: 0.25rem;
                        margin-bottom: 1.0rem;
                        border-style:  solid;
                        border-width: thin;
                    }
                }
            }
        }
        button {
            .button(@mainColor, spin(lighten(@mainColor,66%,relativ),@subColor));
            &.sub-button {
                .button(lighten(@mainColor,20%,relativ), spin(@mainColor,@subColor));
            }
        }
        footer {
            text-align: right;
            padding: 0;
            p {
                padding: 0.5rem;
                display: inline-block;
                margin: inherit;
                text-indent: inherit;
                &:first-letter {
                    font-size: inherit;
                }
                background: @mainColorLight ;
                color: @mainColor ;
                font-style: italic;
                font-size: 85%;
            }
            nav li {
                padding: 0.5rem;
            }
            border-bottom-style: solid;
        }
    }
}