.tabs {
    border: 1px solid #e1e8ed;
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04)
}

.tabs ul.nav.nav-tabs {
    background-color: #f8f9fa;
    border-bottom: 2px solid #e1e8ed;
    margin: 0;
    padding: 0.5rem 0.5rem 0 0.5rem;
    border-radius: 8px 8px 0 0
}

.tabs ul.nav.nav-tabs .nav-item a.nav-link {
    border-radius: 8px 8px 0 0;
    color: #495057 !important;
    background-color: transparent !important;
    border: none;
    padding: 12px 24px;
    margin-left: 4px;
    margin-right: 0;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden
}

.tabs ul.nav.nav-tabs .nav-item a.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(135deg, #ff0000 0%, #ff3333 50%, #ff6666 100%);
    transition: width 0.3s ease
}

.tabs ul.nav.nav-tabs .nav-item a.nav-link:hover {     
    color: #ff0000 !important;
    background-color: rgba(228, 16, 29, 0.05) !important
}

.tabs ul.nav.nav-tabs .nav-item a.nav-link:hover::before {
    width: 100%
}

.tabs ul.nav.nav-tabs .nav-item a.nav-link.active {    
    background: linear-gradient(135deg, #ff0000 0%, #ff3333 50%, #ff6666 100%) !important; 
    border-color: transparent !important;
    color: #fff !important;
    box-shadow: 0 4px 12px rgba(228, 16, 29, 0.3) !important;
    transform: translateY(-2px);
    border-radius: 8px 8px 0 0 !important
}

.tabs ul.nav.nav-tabs .nav-item a.nav-link.active::before {
    width: 100%
}

.tabs .tab-content .tab-pane {
    min-height: 500px
}

.tabs .timeline {
    list-style: none;
    margin: 25px 0 22px;
    padding: 0;
    position: relative
}

.tabs .timeline:after {
    border: 6px solid;
    border-top-width: 13px;
    border-color: var(--main-color) transparent transparent transparent;
    content: "";
    display: block;
    position: absolute;
    bottom: -19px;
    right: 15px
}

.tabs .timeline-horizontal:after {
    border-top-width: 6px;
    border-right-width: 13px;
    border-color: transparent var(--main-color) transparent transparent;
    top: 15px;
    left: 0;
    bottom: auto;
    right: auto
}

.tabs .timeline-horizontal .timeline-milestone {
    border-top: 2px solid var(--main-color);
    display: inline;
    float: right;
    margin: 20px 0 0 0;
    padding: 40px 0 0 0
}

.tabs .timeline-horizontal .timeline-milestone:before {
    top: -17px;
    right: auto
}

.tabs .timeline-horizontal .timeline-milestone.is-completed:after {
    top: -17px;
    right: 0
}

.tabs .timeline-milestone {
    border-right: 2px solid var(--main-color);
    margin: 0 20px 0 0;
    padding: 0 25px 5px 0;
    position: relative
}

.tabs .timeline-milestone:before {
    border: 7px solid var(--main-color);
    border-radius: 50%;
    content: "";
    display: block;
    position: absolute;
    right: -17px;
    width: 32px;
    height: 32px
}

.tabs .timeline-milestone.is-completed:before {
    background-color: var(--second-main-color)
}

.tabs .timeline-milestone.is-completed:after {
    color: #FFF;
    content: "\f00c";
    display: block;
    font-family: "Font Awesome 5 Pro";
    line-height: 32px;
    position: absolute;
    top: 0;
    right: -17px;
    text-align: center;
    width: 32px;
    height: 32px
}

.tabs .timeline-milestone.is-current:before {
    background-color: #EEE
}

.tabs .timeline-milestone.is-future:before {
    background-color: #8DACB8;
    border: 0
}

.tabs .timeline-milestone.is-future .timeline-action .title {
    color: #8DACB8
}

.tabs .timeline-action {
    background-color: #f4f7fc;
    padding: 12px 20px 12px 10px;
    position: relative;
    top: -15px;
    max-width: 95%
}

.tabs .timeline-action.is-expandable .title {
    cursor: pointer;
    position: relative
}

.tabs .timeline-action.is-expandable .title:focus {
    outline: 0;
    text-decoration: underline
}

.tabs .timeline-action.is-expandable .content {
    display: none
}

.tabs .timeline-action.is-expandable.is-expanded .title:after {
    border-color: #666 transparent transparent transparent;
    top: 10px;
    left: 5px
}

.tabs .timeline-action.is-expandable.is-expanded .content {
    display: block
}

.tabs .timeline-action .title,
.tabs .timeline-action .content {
    word-wrap: break-word
}

.tabs .timeline-action .title {
    color: var(--second-main-color);
    font-size: 18px;
    margin: 0
}

@media screen and (max-width: 480px) {
    .tabs .timeline-action .title {
        font-size: 18px !important
    }
}

.tabs .timeline-action .date {
    display: block;
    font-size: 14px;
    margin-bottom: 15px
}

.tabs .timeline-action .content {
    font-size: 14px
}

.tabs .file-list {
    line-height: 1.4;
    list-style: none;
    padding-right: 10px
}