body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

.page-intro {
    border-left: 4px solid var(--bs-primary);
    padding-left: 1rem;
}

.cite {
    font-size: 0.85rem;
    color: var(--bs-secondary-color);
}

.cite a {
    word-break: break-all;
}

.source-tag {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.lights-row {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.35rem;
    padding: 1.25rem;
    background: var(--bs-dark);
    border-radius: var(--bs-border-radius);
}

.light-node {
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 50%;
    border: 2px solid #ffc107;
    background: #ffc107;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s, opacity 0.2s;
}

.light-node.on {
    box-shadow: 0 0 10px rgba(255, 193, 7, 0.7);
}

.light-node.off {
    background: #495057;
    border-color: #495057;
    opacity: 0.5;
    cursor: default;
}

.light-connector {
    width: 1.25rem;
    height: 2px;
    background: #6c757d;
}

.grid-diagram {
    font-family: var(--bs-font-monospace);
    font-size: 0.8rem;
    line-height: 1.4;
    white-space: pre;
    background: var(--bs-dark);
    color: var(--bs-light);
    padding: 1rem;
    border-radius: var(--bs-border-radius);
    overflow-x: auto;
}

.grid-diagram .fail {
    color: #ea868f;
}

.grid-diagram .ok {
    color: #75b798;
}

.target-badge {
    font-family: var(--bs-font-monospace);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--bs-primary);
}

.card-hover-link {
    text-decoration: none;
    color: inherit;
    display: block;
    height: 100%;
}

.card-hover-link:hover .card {
    border-color: var(--bs-primary);
}

.card-hover-link .card {
    height: 100%;
    transition: border-color 0.15s;
}

.ai-tag {
    color: var(--bs-secondary-color);
    font-size: 0.8rem;
    font-style: italic;
}