dootask/resources/assets/sass/components/gantt-view.scss

.common-gantt {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: row;
    align-items: self-start;
    color: #747a81;

    * {
        box-sizing: border-box;
    }

    .gantt-left {
        flex-grow: 0;
        flex-shrink: 0;
        height: 100%;
        background-color: #ffffff;
        position: relative;
        display: flex;
        flex-direction: column;

        &:after {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            width: 1px;
            background-color: rgba(237, 241, 242, 0.75);
        }

        .gantt-title {
            display: flex;
            align-items: center;
            height: 76px;
            flex-grow: 0;
            flex-shrink: 0;
            background-color: #F9FAFB;
            padding-left: 12px;
            padding-top: 26px;
            overflow: hidden;

            .gantt-title-text {
                flex: 1;
                line-height: 22px;
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
                font-weight: 600;
            }

            .gantt-title-right {
                flex-shrink: 0;
            }
        }

        .gantt-item {
            transform: translateZ(0);
            max-height: 100%;
            overflow: auto;

            &::-webkit-scrollbar {
                display: none;
            }

            > li {
                height: 40px;
                border-bottom: 1px solid rgba(237, 241, 242, 0.75);
                position: relative;
                display: flex;
                align-items: center;
                padding-left: 12px;

                &:hover {
                    .item-icon {
                        display: flex;
                    }
                }

                .item-overdue {
                    flex-grow: 0;
                    flex-shrink: 0;
                    color: #ffffff;
                    margin-right: 4px;
                    background-color: #ff0000;
                    padding: 1px 3px;
                    border-radius: 3px;
                    font-size: 12px;
                    line-height: 18px;
                }

                .item-title {
                    flex: 1;
                    padding-right: 12px;
                    cursor: default;
                    overflow: hidden;
                    text-overflow: ellipsis;
                    white-space: nowrap;

                    &.complete {
                        text-decoration: line-through;
                    }

                    &.overdue {
                        font-weight: 600;
                    }
                }

                .item-icon {
                    display: none;
                    align-items: center;
                    justify-content: center;
                    width: 32px;
                    margin-right: 2px;
                    font-size: 16px;
                    color: #888888;
                }
            }
        }
    }

    .gantt-right {
        flex: 1;
        height: 100%;
        background-color: #ffffff;
        position: relative;
        overflow: hidden;

        .gantt-size {
            position: absolute;
            top: 76px;
            left: 0;
            z-index: 2;
            overflow: hidden;
            cursor: pointer;
            user-select: none;
            padding: 8px 14px;
            background: rgba(255, 255, 255, 0.502);
            transition: all 250ms;
            box-shadow: 0 0 0 rgba(0, 0, 0, 0);
            border-bottom-right-radius: 9px;
            &:hover {
                box-shadow: 0 0 6px rgba(0, 0, 0, 0.15);
                background: #fff;
            }
            > i {
                font-size: 20px;
            }
        }

        .gantt-chart {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            transform: translateZ(0);

            .gantt-month {
                display: flex;
                align-items: center;
                position: absolute;
                top: 0;
                left: 0;
                right: 0;
                z-index: 1;
                height: 26px;
                line-height: 20px;
                font-size: 14px;
                background-color: #F9FAFB;

                > li {
                    flex-grow: 0;
                    flex-shrink: 0;
                    height: 100%;
                    position: relative;
                    overflow: hidden;

                    &:after {
                        content: "";
                        position: absolute;
                        top: 0;
                        right: 0;
                        width: 1px;
                        height: 100%;
                        background-color: rgba(237, 241, 242, 0.75);
                    }

                    .month-format {
                        overflow: hidden;
                        white-space: nowrap;
                        padding: 6px 6px 0;
                    }
                }
            }

            .gantt-date {
                display: flex;
                align-items: center;
                position: absolute;
                top: 26px;
                left: 0;
                right: 0;
                bottom: 0;
                z-index: 2;
                cursor: move;

                &:before {
                    content: "";
                    position: absolute;
                    top: 0;
                    left: 0;
                    right: 0;
                    height: 50px;
                    background-color: #F9FAFB;
                }

                > li {
                    flex-grow: 0;
                    flex-shrink: 0;
                    list-style: none;
                    height: 100%;
                    position: relative;
                    overflow: hidden;

                    &:after {
                        content: "";
                        position: absolute;
                        top: 0;
                        right: 0;
                        width: 1px;
                        height: 100%;
                        background-color: rgba(237, 241, 242, 0.75);
                    }

                    .date-format {
                        overflow: hidden;
                        white-space: nowrap;
                        display: flex;
                        flex-direction: column;
                        align-items: center;
                        justify-content: center;
                        height: 44px;

                        .format-day {
                            line-height: 28px;
                            font-size: 18px;
                        }

                        .format-week {
                            line-height: 16px;
                            font-weight: 300;
                            font-size: 13px;
                        }
                    }
                }
            }

            .gantt-timeline {
                position: absolute;
                top: 76px;
                left: 0;
                right: 0;
                bottom: 0;
                z-index: 3;
                overflow-x: hidden;
                overflow-y: auto;

                > li {
                    cursor: default;
                    height: 40px;
                    border-bottom: 1px solid rgba(237, 241, 242, 0.75);
                    position: relative;

                    .timeline-item {
                        position: absolute;
                        top: 0;
                        touch-action: none;
                        pointer-events: auto;
                        padding: 4px;
                        margin-top: 4px;
                        background: #e74c3c;
                        border-radius: 18px;
                        color: #fff;
                        display: flex;
                        align-items: center;
                        will-change: contents;
                        height: 32px;

                        .timeline-title {
                            touch-action: none;
                            flex-grow: 1;
                            overflow: hidden;
                            text-overflow: ellipsis;
                            white-space: nowrap;
                            margin-left: 4px;
                            margin-right: 10px;
                        }

                        .timeline-resizer {
                            height: 22px;
                            touch-action: none;
                            width: 8px;
                            background: rgba(255, 255, 255, 0.1);
                            cursor: ew-resize;
                            flex-shrink: 0;
                            will-change: visibility;
                            position: absolute;
                            top: 5px;
                            right: 5px;
                        }
                    }
                }
            }
        }
    }
}