drupal-erable/web/themes/erabletheme/scss/partials/_header.scss

$header_height: 4.5rem; // 72px maquette

.layout-container {
    header[role="banner"] {
        width: 100%;
        background-color: white;
        position: sticky;
        top: 0;
        z-index: 99;
        box-shadow: none;

        > div:first-of-type {
            z-index: 99;
            position: relative;
            display: flex;
            align-items: center;
            height: $header_height;

            // Conteneurs Drupal des blocs logos / burger
            > div {
                height: $header_height;
                display: flex;
                align-items: center;

                > div {
                    display: flex;
                    align-items: center;
                    height: 100%;

                    > div {
                        height: 100%;
                        a {
                            display: flex;
                            align-items: center;
                            height: 100%;
                        }
                        img {
                            width: auto;
                            height: auto;
                            max-height: calc($header_height - 1rem);
                        }
                    }
                }
            }

            #block-erabletheme-logorep-2,
            #block-erabletheme-logoepau-2,
            #block-erabletheme-logoerable {
                padding: 0 1rem;
            }

            #block-erabletheme-logorep-2 {
                padding-left: 1.25rem;
            }

            #block-erabletheme-logoerable {
                margin-left: auto; // pousse le burger à droite
            }

            #block-erabletheme-socialmedialinks {
                display: none;
            }

            #block-erabletheme-header {
                height: $header_height;

                #hamburger {
                    cursor: pointer;
                    width: $header_height; // carré 72x72
                    height: $header_height;
                    background-color: $fluo_green;
                    display: flex;
                    align-items: center;
                    justify-content: center;

                    .burger-icon {
                        position: relative;
                        width: 1.75rem;
                        height: 1rem;
                        $bar_thickness: 2px;
                        $bar_transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), top 0.35s cubic-bezier(0.4, 0, 0.2, 1), bottom 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.2s ease;

                        div {
                            position: absolute;
                            left: 0;
                            right: 0;
                            height: $bar_thickness;
                            background-color: black;
                            border-radius: 1px;
                            transform-origin: center center;
                            transition: $bar_transition;
                        }
                        div:nth-of-type(1) { top: 0; }
                        div:nth-of-type(2) {
                            top: 50%;
                            transform: translateY(-50%);
                            opacity: 1;
                        }
                        div:nth-of-type(3) { bottom: 0; }
                    }

                    .burger-icon.open {
                        div:nth-of-type(1) {
                            top: 50%;
                            transform: translateY(-50%) rotate(45deg);
                        }
                        div:nth-of-type(2) {
                            opacity: 0;
                        }
                        div:nth-of-type(3) {
                            bottom: 50%;
                            transform: translateY(50%) rotate(-45deg);
                        }
                    }
                }

                ul:not(.social-media-links--platforms) {
                    position: absolute;
                    left: 0;
                    top: $header_height;
                    z-index: -1;
                    display: none;
                    height: auto;
                    max-height: 0vh;
                    transition: max-height 0.9s ease, padding 0.5s ease-out;
                    background-color: $dark_green;
                    width: 100vw;
                    padding: 0;
                    align-items: center;
                    flex-direction: column;
                    > li {
                        width: 100%;
                        display: flex;
                        justify-content: center;
                        padding: 6px 0;
                        opacity: 0;
                        transition: opacity 0.3s ease;
                        max-width: 60vw;
                        > a {
                            text-align: center;
                            line-height: 1.2;
                            color: white;
                            font-family: $marianne;
                            font-weight: 800;
                            padding: 4px 6px;
                            background-color: rgba(255, 255, 255, 0);
                            transition: background-color 0.3s ease, color 0.3s ease;
                        }
                        > a:hover {
                            background-color: white;
                            color: $dark_green;
                        }
                        > a.is-active {
                            background-color: white;
                            color: $dark_green;
                        }
                        @media (min-width: $breakpoint_tablet) {
                            max-width: 30vw;
                        }
                        #socials-in-menu-wrapper {
                            display: flex;
                            width: auto;
                            li {
                                width: auto;
                                padding: 0 1rem;
                                margin-top: 1rem;
                                a {
                                    span {
                                        color: white;
                                    }
                                    svg {
                                        display: none;
                                    }
                                }
                            }
                        }
                    }
                    > li.visible {
                        opacity: 1;
                    }
                    > li:nth-of-type(1),
                    > li:nth-of-type(6),
                    > li:nth-of-type(7),
                    > li:nth-of-type(8),
                    > li:nth-of-type(9),
                    > li:nth-of-type(10) {
                        border-bottom: solid 1px white;
                        padding: 12px 0;
                    }
                    @media (min-width: $breakpoint_desktop) {
                        width: 25vw;
                        right: 0;
                        left: auto;
                        li {
                            width: calc(100% - $x_margin * 2);
                            a {
                                width: 100%;
                                text-align: left;
                            }
                        }
                    }
                }
                ul.active {
                    padding: 30px 0;
                    padding-top: 3rem;
                    max-height: calc(100vh - #{$header_height});
                    overflow-y: scroll;
                }
            }

            #block-erabletheme-navigationprincipale {
                margin-top: 0 !important;
            }
        }

        > div:nth-of-type(2) {
            z-index: 98;
            position: relative;
        }
    }

    #block-erabletheme-navigationprincipale {
        background: linear-gradient(to bottom, white, rgba(255, 255, 255, 0.8) 50%, transparent);
        width: 100%;
        display: none;
        position: absolute;
        padding-top: 1rem;
        @media (min-width: $breakpoint_desktop) {
            display: block;
        }
        ul {
            width: 100%;
            display: flex;
            padding: 1rem 10vw;
            justify-content: space-around;
            li {
                font-family: $marianne;
                font-size: $fs_sm;
                padding: 9px 16px;
                background-color: white;
                transition: background-color 0.3s ease;
                &:first-of-type {
                    display: flex;
                    justify-items: center;
                    &::after {
                        content: url(../assets/icons/arrow-down-s-line.svg);
                        display: inline-block;
                        height: 1rem;
                        width: 1rem;
                        margin-left: 0.2rem;
                    }
                }
                &:hover, &.submenu-open {
                    background-color: $fluo_green;
                }
                a {
                    font-weight: 800;
                    color: black;
                    &:is-active {
                        background-color: $fluo_green;
                    }
                }
            }
        }
    }

    #block-erabletheme-leprogramme {
        position: fixed;
        background-color: white;
        max-height: 0vh;
        overflow: hidden;
        display: none;
        transition: max-height 0.6s ease;
        > h2 {
            display: none;
        }
        ul {
            padding: 1rem 1.5rem;
            li {
                font-family: $marianne;
                font-size: $fs_sm;
                margin: 0.5rem 0;
                a {
                    color: black;
                    &:hover, &.is-active {
                        font-weight: 800;
                    }
                }
            }
        }
    }
}