.timeline {
    position: relative;
    padding-left: 2rem;
    margin: 2rem 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(to bottom, #0d6efd, #198754);
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -2.5rem;
    top: 0.5rem;
    width: 1rem;
    height: 1rem;
    border-radius: 50%;
    background-color: #0d6efd;
    z-index: 1;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background-color: #0d6efd;
    color: white;
    border-radius: 50%;
    margin-right: 0.5rem;
    font-weight: bold;
}

.card {
    transition: transform 0.3s;
    margin-bottom: 1.5rem;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.nav-pills .nav-link.active {
    background-color: #0d6efd;
}

.tab-pane {
    padding: 1.5rem 0;
}

.system-req-table th {
    background-color: #f8f9fa;
}

.warning-box {
    border-left: 4px solid #ffc107;
    background-color: #fff9e6;
    padding: 1rem;
    margin: 1rem 0;
}

.tip-box {
    border-left: 4px solid #198754;
    background-color: #e8f5e8;
    padding: 1rem;
    margin: 1rem 0;
}

.distro-logo {
    height: 40px;
    margin-right: 10px;
}