odoo18/addons/mass_mailing/static/src/scss/mass_mailing.ui.scss

.o_form_view .o_form_sheet .o_notebook .tab-content .tab-pane .o_mail_body {
    // cancel padding of form_sheet
    margin-top: -$o-sheet-cancel-tpadding;
    margin-left: -$o-sheet-cancel-hpadding;
    margin-right: -$o-sheet-cancel-hpadding;
    margin-bottom: -$o-sheet-cancel-bpadding;
}

html:not(.o_mass_mailing_iframe), body:not(.o_mass_mailing_iframe), html.o_fullscreen {
    overflow: visible !important;
}

html:has(body.o_mass_mailing_iframe_body_fullscreen) {
    overflow-y: auto !important;
}

body {
    &.o_mass_mailing_iframe_body_with_snippets_sidebar:not(.o_mass_mailing_iframe_body_fullscreen) {
        padding-right: $o-we-sidebar-width !important;
    }
    &.o_mass_mailing_iframe_body_fullscreen {
        overflow-y: auto !important;
    }
}

#iframe_target:not(.o_fullscreen) {
    display: flex;
    flex-direction: column;
}

.o_mail_theme_selector {
    > a {
        height: $o-we-toolbar-height;
        line-height: $o-we-toolbar-height;
        border-radius: 0;
        background-color: $o-we-sidebar-bg;
        color: #212629;
        box-shadow: none !important;
        display: flex;

        &:first-child {
            display: none;
        }

        .o_thumb {
            background-size: cover;
            border: 1px solid $o-we-border-color;
            flex: 1;
        }


        &:hover {
            background-color: $o-we-sidebar-bg;

            .o_thumb {
                border: 1px solid black;
            }
        }

        &.selected .o_thumb {
            border: 2px solid $o-brand-odoo;
            background-color: $o-we-sidebar-bg;
        }

        &:hover, &:focus, &:active {
            color: #4e525b;
        }
    }
}

.o_mail_theme_selector_new {
    display: block;
    font-size: 1rem;
    position: absolute;
    overflow: auto;
    background-color: $o-we-sidebar-bg;
    z-index: 1050;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;

    h5 {
        font-size: 1.1rem!important;
    }

    .dropdown-item {
        padding: 10px 10px;
        &:first-child {
            display: none;
        }

        .o_thumb {
            display: none;
            background-size: cover;
            padding-top: 50%;
            border: 1px solid $o-we-border-color;

            &.logo {
                display: block;
            }
        }

        &:hover {
            background-color: $o-we-sidebar-bg;

            .o_thumb {
                border: 1px solid black;
            }
        }

        &:focus {
            background-color: $o-we-sidebar-bg;
        }

        &.selected .o_thumb {
            border: 2px solid $o-brand-odoo;
            background-color: $o-we-sidebar-bg;
        }
    }

    .dropdown-item {
        margin: 0;
        float: left;
        clear: none;
        width: 100%;
        max-width: 20%;
        transition: all 0.3s ease 0s;

        &:first-child {
            display: block;
        }

        .o_thumb {
            display: none;
            padding-top: 107%;
            border: 1px solid #4e525b;
            border-top: 1px solid $o-we-border-color;
            box-shadow: 0 5px 10px rgba(black, 0.8);
            will-change: transform;
            backface-visibility: hidden;
            transition: all 0.3s ease 0s;

            &.small {
                display: block;
            }

            @media screen and (min-width: 900px) {
                &.small {
                    display: none;
                }
                &.large {
                    display: block;
                }
            }
        }

        &:hover {
            background-color: #212629;

            .o_thumb {
                box-shadow: 0 5px 30px 1px rgba(black, 0.6);
            }
        }

        &.o_mass_mailing_themes_upgrade .o_thumb {
            position: relative;
            display: block;
            border: 1px dashed white;
            opacity: 0.2;

            > .fa {
                @include o-position-absolute(0, 0, 0, 0);
                text-align: center;
                font-size: 50px;
                color: white;

                &::before {
                    vertical-align: middle;
                }
                &::after {
                    content: "";
                    display: inline-block;
                    height: 100%;
                    vertical-align: middle;
                }
            }
        }
    }

    .o_mail_template_preview {
        padding: 10px 1.5rem;
        width: 20%;
        div i.o_mail_template_remove_favorite {
            display: none;
        }
        div:hover i.o_mail_template_remove_favorite {
            display: inline-block;
            &:hover {
                color: red;
            }
        }
        img {
            width: 20px;
            height: 20px;
        }
    }
}

@media (max-width: 768px) {
    // Show 2 columns for the templates on small screen
    // can not be done with "o_xxs_form_view" because those
    // elements are inside an iframe (HTML field).
    .o_mail_theme_selector_new {
        .dropdown-item {
            max-width: 50%!important;
        }
    }
    .o_mail_template_preview {
        width: 50%!important;
    }
}

body.o_force_mail_theme_choice {
    #oe_snippets {
        width: 100%;

        .o_mail_theme_selector, .o_mail_theme_selector_new {
            .dropdown-toggle {
                display: none;
            }

            .dropdown-menu {
                display: block;

                .dropdown-item {
                    margin: 0;
                    float: left;
                    clear: none;
                    width: 100%;
                    max-width: 25%;
                    transition: all 0.3s ease 0s;

                    &:first-child {
                        display: block;
                    }

                    .o_thumb {
                        display: none;
                        padding-top: 107%;
                        border: 1px solid #4e525b;
                        border-top: 1px solid $o-we-border-color;
                        box-shadow: 0 5px 10px rgba(black, 0.8);
                        will-change: transform;
                        backface-visibility: hidden;
                        transition: all 0.3s ease 0s;

                        &.small {
                            display: block;
                        }

                        @media screen and (min-width: 900px) {
                            &.small {
                                display: none;
                            }
                            &.large {
                                display: block;
                            }
                        }
                    }

                    &:hover {
                        background-color: #212629;

                        .o_thumb {
                            box-shadow: 0 5px 30px 1px rgba(black, 0.6);
                        }
                    }

                    &.o_mass_mailing_themes_upgrade .o_thumb {
                        position: relative;
                        display: block;
                        border: 1px dashed white;
                        opacity: 0.2;

                        > .fa {
                            @include o-position-absolute(0, 0, 0, 0);
                            text-align: center;
                            font-size: 50px;
                            color: white;

                            &::before {
                                vertical-align: middle;
                            }
                            &::after {
                                content: "";
                                display: inline-block;
                                height: 100%;
                                vertical-align: middle;
                            }
                        }
                    }
                }
            }
        }
    }
    .note-editor {
        display: none;
    }
}

body.editor_enable.o_basic_theme.o_in_iframe {
    padding-right: 0px !important;
}

.note-editable .o_layout {
    overflow: initial;
}

.oe_structure {
    width: 100%;
}

:root {
    font-size: 14px;
}

.editor_enable .o_mass_mailing_iframe {
    .o_editable:empty, .o_editable > .oe_drop_zone.oe_insert:not(.oe_vertical):only-child {
        background-color: white;
        border: 2px dashed #999999;
        padding: 112px 0px;
        text-align: center !important;
        color: #999999;
        margin: 5px;
        height: auto;
        width: -moz-available;          /* WebKit-based browsers will ignore this. */
        width: -webkit-fill-available;  /* Mozilla-based browsers will ignore this. */
        width: stretch;

        &:before {
            content: attr(data-editor-message);
            display: block;
            font-size: 20px;
            line-height: 50px; // Useful for the "wizz" animation on snippet click to be more visible
        }
        &:after {
            content: attr(data-editor-sub-message);
            display: block;
        }
    }
}