body {
    background-color: #f8f9fa;
}

.card-stat {
    transition: transform 0.15s;
}

.card-stat:hover {
    transform: translateY(-2px);
}

.badge-online {
    background-color: #198754;
}

.badge-offline {
    background-color: #6c757d;
}

.score-bar {
    height: 8px;
    border-radius: 4px;
    background-color: #e9ecef;
}

.score-bar-fill {
    height: 100%;
    border-radius: 4px;
    background-color: #0d6efd;
}

.status-fresh {
    color: #198754;
}

.status-stale {
    color: #dc3545;
}

.tx-in {
    color: #198754;
}

.tx-out {
    color: #dc3545;
}

/* ── Showcase Timeline ── */

.showcase-section {
    border-top: 2px solid #dee2e6;
    padding-top: 2rem;
    margin-top: 2.5rem;
}

.showcase-timeline {
    position: relative;
    padding-left: 40px;
    margin: 1.5rem 0;
}

.showcase-timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #dee2e6;
}

.timeline-step {
    position: relative;
    margin-bottom: 1.25rem;
}

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

.timeline-marker {
    position: absolute;
    left: -33px;
    top: 4px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid #fff;
    box-shadow: 0 0 0 2px #dee2e6;
}

.timeline-marker.bg-success { box-shadow: 0 0 0 2px #198754; }
.timeline-marker.bg-primary { box-shadow: 0 0 0 2px #0d6efd; }
.timeline-marker.bg-warning { box-shadow: 0 0 0 2px #ffc107; }
.timeline-marker.bg-info    { box-shadow: 0 0 0 2px #0dcaf0; }

.timeline-content {
    padding: 0.6rem 1rem;
    background: #f8f9fa;
    border-radius: 0.5rem;
    border-left: 3px solid #0d6efd;
}

.timeline-content h6 {
    margin-bottom: 0.15rem;
    font-size: 0.9rem;
}

.timeline-content p {
    margin-bottom: 0;
    font-size: 0.85rem;
    color: #6c757d;
}

.showcase-tx-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.showcase-tx-flow .tx-node {
    text-align: center;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.85rem;
    font-weight: 500;
}

.showcase-tx-flow .tx-arrow {
    font-size: 1.25rem;
    color: #198754;
}

.scenario-card .card-header h5 {
    margin-bottom: 0;
}

.participant-card {
    height: 100%;
}

.participant-card .badge {
    font-size: 0.75rem;
}