.o_calendar_renderer {
    --o-circle-padding: calc(#{map-get($spacers, 1 )} / 2);
    --o-cw-border-color: #{$border-color};

    background-color: $o-view-background-color;
    grid-area: cal;

    @include media-breakpoint-down(lg) {
        border-top: 1px solid var(--o-cw-border-color);
    }

    .fc-event {
        // `web/lib/fullcalendar/core/main.css` gives events with links and draggable events a hand mouse pointer,
        // but doesn't take into account that events have popovers.
        cursor: pointer;
        color: $body-color;
        background-color: $o-view-background-color;
        transition: right .3s, left .3s;
        overflow: hidden;

        @include media-breakpoint-down (md) {
            line-height: 1.2;
        }

        &:hover {
            color: $body-color;

            &:not(.o_event_dot) .fc-bg {
                --o-bg-opacity: .35;
            }
        }

        &.fc-mirror, &.fc-dragging {
            --o-bg-opacity: .25;
            border-color: rgba($o-action, .5);

            .fc-bg {
                background-color: rgba($o-action, var(--o-bg-opacity));
            }
        }

        &.fc-mirror {
            background-color: rgba($o-action, var(--o-bg-opacity));
        }

        &.o_past_event::after{
            content: '';
            @include o-position-absolute(0, 0, 0, 0);
            display: block;
            z-index: 3;
            background-color: rgba($o-view-background-color, var(--o-overlay-opacity));
        }

        &:not(.o_event_dot):not(.fc-dragging).o_cw_custom_highlight {
            box-shadow: 0px 8px 8px -7px rgba(0, 0, 0, 0.2);
            z-index: 2; // for the shadow to go over the events below
        }

        .fc-bg {
            transition: $transition-base;
        }

        .fc-content {
            > .o_event_title {
                @include media-breakpoint-down(lg){
                    text-overflow: unset;
                    white-space: break-spaces;

                    > span {
                        word-break: break-word;
                    }
                }
            }
        }

        &:not(.o_event_dot) {
            --o-overlay-opacity: .5;

            &.o_event_hatched {
                --o-bg-opacity: .5;
            }
        }

        &.o_event_dot {
            --o-overlay-opacity: .25;

            display: flex;
            align-items: center;
            gap: map-get($spacers, 1);
            border: none;

            &:before {
                z-index: 2;
                display: inline-block;
                font-family: Fontawesome;
                content: '\f111'; // fa-circle
            }

            &:hover {
                --o-bg-opacity: 1;
            }
        }
    }

    .o_calendar_widget {
        > .fc-view-container {
            height: 100%;
        }

        .fc-row .fc-widget-header {
            padding-top: map-get($spacers, 2);
        }

        // ===  Adapt calendar table borders and general layout ===
        // ========================================================

        th, td {
            border-color: var(--o-cw-border-color);
        }

        .fc-time-grid .fc-slats .fc-minor td {
            border-top-color: var(--o-cw-border-color);
        }

        .fc-body > tr > .fc-widget-content {
            border-top: 0;
        }

        .fc-widget-content, .fc-widget-header {
            border-bottom: 0;
        }

        hr.fc-widget-header {
            padding: 1px;
            border: 0;
            background: map-get($grays, "400");
        }

        .fc-head-container {
            position: sticky;
            top: 0;
            z-index: $zindex-modal;
            border-top: 0;
            background-color: $o-view-background-color;

            .fc-week-number {
                text-align: center;
                font-size: $o-font-size-base-smaller;

                > span {
                    display: none;
                    padding:  map-get($spacers,1);
                    border-radius: $border-radius;
                    background-color: rgba($gray-200, .5);
                }
            }
        }

        .fc-more-popover {
            .fc-header {
                padding-left: 1rem;
                .fc-title {
                    font-weight: bold;
                }
            }

            .fc-body {
                max-height: 500px;
                overflow: auto;
            }
        }

        .o_calendar_disabled {
            background-color: rgba($gray-200, .5);
        }

        // ======  Specific agenda types ======
        // ====================================

        // ====== Day only
        .fc-timeGridDay-view {
            .fc-day-header {
                text-align: left;
                border: 0;

                > span {
                    gap: map-get($spacers, 1);
                    margin-left: map-get($spacers, 1);
                    margin-bottom: map-get($spacers, 1);
                }
                .o_cw_day_number {
                    padding: map-get($spacers, 1);
                }
            }
        }

        // ====== Week only

        .fc-timeGridWeek-view {
            .fc-day-header {
                text-align: center;

                > span{
                    flex-direction: column;
                }

                .o_cw_day_number {
                    padding: map-get($spacers, 1) map-get($spacers, 2);

                    @include media-breakpoint-up(lg) {
                        font-size: 1.25rem;
                    }
                }
            }

            .fc-time-grid {
                .fc-event-container {
                    margin: 1px;
                }
            }
        }

        // ====== Both Day and Week agenda
        .fc-timeGridDay-view,
        .fc-timeGridWeek-view {
            .fc-head-container {
                border-bottom: 1px solid var(--o-cw-border-color);
            }
            .fc-day-header {
                > span {
                    display: flex;
                    align-items: center;
                }

                &.fc-today {
                    color: $primary;
                    .o_cw_day_number {
                        position:relative;
                        color: $o-view-background-color;

                        &:before {
                            content: '';
                            @include o-position-absolute($top: 50%, $left: 50%);
                            transform: translate(-50%,-50%);
                            z-index: -1;
                            width: 100%;
                            border-radius: $border-radius-pill;
                            background: $primary;
                            aspect-ratio: 1;
                            color: $o-view-background-color;
                        }
                    }
                }
            }

            .fc-time-grid .fc-slats .fc-minor td {
                border-top-style: none;
            }

            // Remove dotted borders (half-hours)


            // Align labels and timelines
            .fc-axis{
                font-size: .6rem;

                @include media-breakpoint-up(md) {
                    font-size: .75rem;
                }

                &.fc-time {
                    border-top-color: transparent;

                    span {
                        max-width: 7ch;
                        margin-top: -22px;
                        position: relative;
                        display: block;
                    }
                }
            }

            // Add a small gap on top to show the first time label (0:00)
            .fc-scroller .fc-time-grid > .fc-slats,
            .fc-scroller .fc-time-grid > .fc-bg {
                padding-top: 15px;
            }

            // Row containing "all day" events
            div.fc-day-grid {
                background-color: $o-view-background-color;
                box-shadow: 0 6px 12px -6px rgba(0, 0, 0, 0.16);

                + hr.fc-widget-header {
                    padding: 1px 0 0;
                    background: map-get($grays, "300");
                }

                .fc-day-grid-event {

                    @include media-breakpoint-down(md){
                        margin: 1px;

                        .fc-content {
                            max-height: 1.2em;
                        }
                    }
                }

                .fc-content-skeleton tr:not(:first-child) .fc-h-event {
                    margin-top: 3px;
                }
            }

            // Create a 'pseudo-border' for the first row. The actual border
            // is hidden because of border-collapse settings.
            .fc-slats tr:first-child td.fc-widget-content:last-child {
                box-shadow: inset 0 1px 0 var(--o-cw-border-color);
            }

            .fc-day.fc-widget-content.fc-today:not(.o_calendar_disabled) {
                background: $o-view-background-color;
            }

            .fc-event {
                --o-bg-opacity: .25;

                // Prevent events with similar color to visually overlap each other
                &:not(.o_event_allday):not(.o_homework_event) {
                    box-shadow: 0 0 0 1px $o-view-background-color;
                }

                &.o_cw_custom_highlight:not(.fc-dragging) {
                    z-index: $zindex-modal !important;
                    right: 0px !important;
                    left: 0px !important;
                    margin-right: 0 !important;
                }

                .fc-content {
                    margin: map-get($spacers, 1);

                    @include media-breakpoint-up(md) {
                        margin-top: 0;
                        margin-bottom: 0;
                    }
                }
            }

            // Reset position to keep the "nowIndicator" line visible
            .fc-content-col {
                position: initial;
            }
        }

        // ====== Both Week and Month agenda

        .fc-timeGridWeek-view, .fc-dayGridMonth-view {
            .fc-day-header > span{
                text-transform: uppercase;
                font-size: $o-font-size-base-smaller;
            }
        }

        // ====== Both Month and Months in Year agenda

        .fc-dayGridMonth-view {
            .fc-content-skeleton {
                --o-cw-circle-padding: calc(#{map-get($spacers, 1 )} / 2);
                --o-cw-color: var(--body-color);

                height: 100%;
                padding-bottom: 0;

                .fc-week-number {
                    line-height: $line-height-sm;
                    font-size: $o-font-size-base-smaller;
                    opacity: .8;

                    @include media-breakpoint-down(lg) {
                        > span {
                            font-size: .5rem;
                        }
                    }

                    @include media-breakpoint-up(lg) {
                        padding: map-get($spacers, 1);
                    }
                }

                .fc-day-top {
                    text-align: center;

                    &.fc-other-month {
                        opacity: 0.8;

                        &:not(.fc-today) .fc-day-number {
                            color: map-get($grays, "500");
                        }
                    }

                    .fc-day-number {
                        position: relative;
                        float: none !important;
                        color: var(--o-cw-color);


                        &:before {
                            content:"";
                            z-index: -1;
                            @include o_position-absolute($top: calc(#{var(--o-circle-padding)} * -1), $left: 50%);
                            transform: translateX(-50%);
                            display: none;
                            aspect-ratio: 1/1;
                            height: 100%;
                            border-radius: 100%;
                            background: var(--o-cw-bg, none);
                            padding: var(--o-circle-padding);
                        }
                    }

                    .fc-week-number {
                        // only in Month view
                        @include o-position-absolute($top: 0, $left: 0);
                        @include media-breakpoint-down(lg) {
                            background-color: $gray-100;
                        }
                    }

                    &.fc-today {
                        --o-cw-color: #{$white};
                        --o-cw-bg: #{$o-cw-color-today-accent};
                        padding-top: map-get($spacers, 1)/2;

                        .fc-day-number:before {
                            display: block;
                        }
                    }
                }
            }

            td:first-child {
                border-left: none;
            }

            .fc-bg .fc-today:not(.o_calendar_disabled) {
                background: none;
            }

            .fc-more-cell {
                > div,
                .fc-more {
                    text-align: center;
                }
            }

            .fc-event {
                padding: 0 map-get($spacers, 1);
                @include media-breakpoint-up(lg) {
                    margin: 0 3px 2px;
                }

                .fc-content {
                    display: flex;
                    justify-content: start;
                    flex-direction: row;
                    max-height: 1.2em;
                }
            }
        }

        // ====== Year only
        .fc-dayGridYear-view {
            > table {
                height: 100%;
            }

            table,
            tr,
            th,
            td {
                border: none;
            }

            &.fc-readonly-year-view {
                .fc-day-top:not(.fc-has-event) {
                    cursor: default !important;
                }
            }

            &:not(.fc-readonly-year-view) {
                .fc-day-top {
                    &.fc-today {
                        padding-top: 0;
                    }

                    &:hover > .fc-day-number {
                        --o-cw-color: #{$o-white};
                        --o-cw-bg: #{mix($o-white, $o-action, 50%)};

                        &:before {
                            display: block;
                        }
                    }
                }
            }

            > .fc-month-container {
                @include media-breakpoint-down(md) {
                    width: 100%;
                }

                > .fc-month {
                    width: 21rem;
                    margin: auto;

                    > .fc-toolbar.fc-header-toolbar {
                        margin-bottom: 4px;
                        cursor: default;
                        justify-content: start;

                        h2 {
                            font-size: $font-size-base;
                        }
                    }

                    .fc-widget-header {
                        position: static;
                        cursor: default;
                    }

                    .fc-dayGridMonth-view {
                        border-right: none;

                        .fc-has-event {
                            background-color: #b4dff5;
                        }

                        .fc-week-number {
                            cursor: default;
                            opacity: .5;
                        }

                        .fc-day-header {
                            font-size: $o-font-size-base-smaller;
                        }
                    }

                    .fc-week.fc-row {
                        display: flex;
                        align-items: center;
                        min-height: 2rem;

                        .fc-week-number {
                            padding: 0;

                            > span {
                                padding: 0;
                                vertical-align: middle;
                            }
                        }
                    }

                    .fc-disabled-day {
                        background-color: unset;
                    }

                    .fc-day-top {
                        text-align: center;
                        cursor: pointer;
                    }
                }
            }
        }
        // ====== RTL layout(s)
        &.fc-rtl {
            .fc-timeGrid-view .fc-event {
                border-width: 0 3px 0 0;
            }

            .fc-dayGridMonth-view .fc-event {
                border-width: 0 3px 0 0;

                &.fc-not-start {
                    margin: 0 0 1px 5px;
                    border-width: 0 0 0 3px;

                    .fc-content {
                        padding-right: 6px;
                        padding-left: 0;
                    }
                }

                &.fc-not-end {
                    margin: 0 5px 1px 0;

                    .fc-content {
                        padding-left: 6px;
                        padding-right: 0;
                    }
                }
            }
        }
    }
}

.o_calendar_renderer .fc-view {
    .fc-event:not(.o_event_dot):not(.fc-dragging) {
        &.o_cw_custom_highlight, &.o_calendar_popover_open {
            box-shadow: 0px 8px 2px -7px rgba(0, 0, 0, 0.5);
            z-index: 2; // for the shadow to go over the events below
        }
    }
}


// ===============  Generate color classes ===============
@for $i from 1 through length($o-colors-complete) {
    $color: nth($o-colors-complete, $i);
    $color-subtle: mix($o-white, $color, 55%);

    .o_calendar_renderer .fc-view {
        .o_calendar_color_#{$i - 1} {
            --o-event-bg: #{$color};
            --o-event-bg--subtle-rgb: #{to-rgb($color-subtle)};

            &.fc-bgevent, &:not(.o_event_dot) .fc-bg {
                background-color: $color-subtle;
            }

            &.o_event_hatched:not(.o_event_dot):not(.fc-day-grid-event):not(.fc-time-grid-event), &.o_event_hatched .fc-bg, &.o_attendee_status_tentative:not(.o_event_dot) .fc-bg {
                background: repeating-linear-gradient(
                    45deg,
                    RGBA(to-rgb($color), .3),
                    RGBA(to-rgb($color), .3) 10px,
                    RGBA(to-rgb($color), .6) 10px,
                    RGBA(to-rgb($color), .6) 20px
                ) !important;
            }

            &.o_event_striked:not(.o_event_dot) {
                background: linear-gradient(
                    transparent 0 45%,
                    $color 45% 55%,
                    transparent 55% 100%);
            }

            &.fc-event:not(.o_event_dot):not(.fc-dragging) {
                color: color-contrast($color-subtle);
                border-color: tint-color($color, 50%);
            }

            &.o_event_dot {
                background-color: rgba(var(--o-event-bg--subtle-rgb), var(--o-bg-opacity));

                &:before {
                    color: var(--o-event-bg, #{$info});
                }
            }
        }
    }

    .o_cw_filter_color_#{$i - 1} {
        &.form-check:hover .o_cw_filter_input_bg:not(.no_filter_color) {
            border-color: shade-color($color, 20%);
        }

        .o_cw_filter_input_bg {
            border-color: $color;

            &:checked {
                background-color: $color;
            }
        }
    }
}