doc/themes/learn4/scss/theme/_offcanvas.scss

.off-canvas {
    min-height: 100vh;

    .off-canvas-toggle {
        position: fixed;
        top: 0.3rem;
        left: 0.3rem;
        width: 1.6rem;
        height: 1.6rem;
        padding-top: .15rem;
        z-index: 3;
        font-size: 16px !important;
    }

    .off-canvas-content {
        padding: inherit;
    }

    .off-canvas-overlay {
        background: rgba($dark-color, .5);
    }

    .learn-sidebar {
        width: $sidebar-width;
        color: rgba(#fff, 0.6);
        overflow-y: inherit;

        &:before {
            position: fixed;
            content: '';
            height: 100vh;
            width: $sidebar-width;
            top: 0;
            left: 0;
        }

        a {
            color: rgba(#fff, 0.8);
            &:hover {
                color: #fff;
            }
        }

        .padding {
            padding-left: 1rem;
        }

        hr {
            border: 0;
            border-bottom: 1px solid rgba(#fff, 0.1);
        }

        .learn-brand {
            position: fixed;
            height: $sidebar-brand-height;
            width: $sidebar-width;
            top: 0;
            //background: rgba(#000, 0.3);
            //border-bottom: 1px solid rgba(#fff, 0.1);
            padding: 10px 20px;
            box-shadow: 0 10px 10px -10px rgba(#000, 0.3);

            #logo {
                display: inline-block;
                margin: 0 2.5rem 0.5rem;

                path {
                    fill: rgba(#fff, 0.8) !important;
                }

            }
        }

        .learn-nav {
            top: $sidebar-brand-height;
            bottom: 0;
            width: $sidebar-width;
            padding-bottom: 1rem;
            position: fixed;

            .read-icon {
                float: right;
                margin-right: 12px;
                margin-top: 5px;
                display: none;
                opacity: 0.8;
                color: rgba(#fff, 0.6);
                font-size: 12px;
            }

            .visited > a > .read-icon {
                display: inline;
            }

            ul {
                list-style: none;
                margin-left: 1rem;
                margin-top: .2rem;

                &.topics {
                    margin-top: 0;
                    > li:first-child {
                        margin-top: 0;
                    }
                }

                a {
                    display: block;
                    padding-top: 0.1rem;
                    padding-bottom: 0.1rem;
                }

                &.searched {
                    a {
                        color: rgba(#fff, 0.5);
                    }

                    .search-match {
                        a {
                            color: rgba(#fff, 0.8);
                            &:hover {
                                color: rgba(#fff, 0.9);
                            }
                        }
                    }
                }

                &.topics {

                    &.searched {
                        ul {
                            display: block;
                        }
                    }


                    & > li {
                        margin-top: .3rem;

                        &.active, &.parent {
                            background-color: rgba(#000, 0.2);
                            margin-left: -1rem;
                            padding-left: 1rem;
                            padding-top: 0.25rem;
                            padding-bottom: 0.25rem;

                        }
                    }



                }

                li, ol {
                    margin-top: .1rem;
                }

                ul {
                    font-size: 0.75rem;
                    display: none;
                    margin-top: 0;
                    margin-bottom: 0;


                }

                li {
                    &.active > a {
                        background-color: $primary-color;
                        color: #fff;
                        margin-left: -0.4rem;
                        padding-left: 0.4rem;

                    }

                    a > span > b {
                        font-weight: 300;
                        color: rgba(#fff, 0.6);
                    }
                }

                .active ul, .parent ul {
                    display: block;
                }
            }
        }

        .searchbox {
            position: relative;
            border: 1px solid rgba(#fff, 0.1);
            background: rgba(#000, 0.1);
            color: rgba(#fff, 0.6);
            border-radius: 2px;

            ::placeholder {
                color: rgba(#fff, 0.5);
            }

            input {
                border: 0;
                background: transparent;
                width: 100%;
                padding: 4px 25px 4px 30px;
                color: rgba(#fff, 0.8);
                font-weight: 200;
                font-size: 0.7rem;


            }

            label {
                position: absolute;
                left: 8px;
                top: 2px;
            }

            span {
                position: absolute;
                right: 8px;
                top: 2px;
                cursor: pointer;
            }
        }

        .search-options {
            margin-top: 10px;

            .adv-search {
                font-size: 85%;
                display: flex;
                align-items: center;
                padding-left: 0.6rem;

                i {
                    margin-right: 5px;
                }
            }

            .version-chooser select {
                display: inline-block;
                border: 1px solid rgba(#fff, 0.1);
                background: rgba(#000, 0.1);
                color: #fff;
                border-radius: 2px;
                font-size: .8rem;
                font-weight: 700;
                margin: 0;
                letter-spacing: 1px;
            }
        }

        .side-tools {
            font-size: 90%;
            color: rgba(#fff, 0.5);
        }
    }
}

/** Defaults (purple) **/
.off-canvas .learn-sidebar:before {
    background: linear-gradient(150deg, $wisteria 0, $deep-well 100%);
}

/** Secondary (green) **/
body.sidebar-green {
    .off-canvas .learn-sidebar:before {
        background: linear-gradient(150deg, $green-sea 0, $deep-well 100%);
    }
}

/** Tertiary (blue)**/
body.sidebar-blue {
    .off-canvas .learn-sidebar:before {
        background: linear-gradient(150deg, $primary-color 0, $deep-well 100%);
    }
}

/** High Contrast **/
body.sidebar-contrast {

    a {
        //color: mix(#000, $link-color, 20%);
    }

    .off-canvas .learn-sidebar {
        a {
            color: #fff;
        }

        &:before {
            background: linear-gradient(150deg, #3B4349 0, #1E2329 100%);
        }

        .searchbox {
            ::placeholder {
                color: rgba(#fff, 0.7);
            }
        }
    }
}