.tag {
    display: inline-block;
    padding: 0.125rem 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    background: var(--color-surface-raised);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-accent);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    padding: 0.5rem 0.875rem;
    font-family: inherit;
    font-size: 0.8125rem;
    font-weight: 500;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface-raised);
    color: var(--color-text);
    cursor: pointer;
    transition:
        background 0.15s,
        border-color 0.15s,
        color 0.15s;
}

.btn:hover {
    background: var(--color-border);
    border-color: #475569;
}

.btn-primary {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: #fff;
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
}

.btn-sm {
    padding: 0.375rem 0.625rem;
    font-size: 0.75rem;
}

.btn-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.control-group label {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.control-group input[type='range'] {
    width: 100%;
    accent-color: var(--color-accent);
}

.control-group input[type='text'],
.control-group select {
    padding: 0.375rem 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
}

.control-hint {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.code-block {
    margin: 0;
    padding: 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    line-height: 1.5;
    background: var(--color-bg);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-sm);
    color: #a5b4fc;
    overflow-x: auto;
}

.shard-list {
    list-style: none;
    margin: 0;
    padding: 0;
    max-height: 160px;
    overflow-y: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}

.shard-list li {
    padding: 0.375rem 0.625rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    cursor: pointer;
    border-bottom: 1px solid var(--color-border-subtle);
}

.shard-list li:last-child {
    border-bottom: none;
}

.shard-list li:hover {
    background: var(--color-surface-raised);
}

.shard-list li.selected {
    background: var(--color-accent-muted);
    color: var(--color-accent);
}

.tree-view {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 0.5rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    max-height: 140px;
    overflow-y: auto;
}

.tree-view .tree-item {
    padding: 0.125rem 0;
    color: var(--color-text-muted);
}

.tree-view .tree-item strong {
    color: var(--color-text);
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    border-radius: 999px;
    background: var(--color-surface-raised);
    border: 1px solid var(--color-border);
}

.status-badge.ok {
    border-color: var(--color-success);
    color: var(--color-success);
}

.status-badge.warn {
    border-color: var(--color-warning);
    color: var(--color-warning);
}

.lesson-hint {
    margin: 0 0 0.75rem;
    padding: 0.625rem 0.75rem;
    font-size: 0.8125rem;
    line-height: 1.45;
    color: var(--color-text-muted);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}

.sync-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    margin: 0.75rem 0;
}

.sync-stat {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.5rem 0.625rem;
    font-family: var(--font-mono);
    font-size: 1.125rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}

.sync-stat-label {
    font-family: var(--font-sans, inherit);
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-text-muted);
}

.signal-readout {
    margin: 0 0 0.75rem;
    padding: 0.5rem 0.625rem;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}

.signal-readout strong {
    color: var(--color-accent);
}

.tabs {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 0.5rem;
}

.tab {
    padding: 0.375rem 0.625rem;
    font-size: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--color-text-muted);
    cursor: pointer;
}

.tab.active {
    background: var(--color-accent-muted);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.toggle-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
}

.toggle-row input {
    accent-color: var(--color-accent);
}

.fps-counter {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-success);
}

.sizing-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.75rem;
    margin-bottom: 1rem;
}

.sizing-table th,
.sizing-table td {
    border: 1px solid var(--color-border);
    padding: 0.375rem 0.5rem;
    text-align: left;
    vertical-align: top;
}

.sizing-table th {
    background: var(--color-surface-raised);
    color: var(--color-text-muted);
    font-weight: 600;
}

.sizing-table td:nth-child(2) {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: #a5b4fc;
}