/* ── Score Viewer ───────────────────────────────────────── */
.score-tabs {
    display: flex;
    border-bottom: 1px solid var(--border);
    margin-bottom: 1.25rem;
    gap: 0;
}
.score-tab {
    padding: 0.65rem 1.25rem;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--muted);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: color 0.15s, border-color 0.15s;
    user-select: none;
}
.score-tab:hover { color: var(--text); }
.score-tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.score-pane { display: none; }
.score-pane.active { display: block; }

/* ── Page navigation ────────────────────────────────────── */
.page-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin: 0 0 0.75rem;
    font-size: 0.85rem;
    color: var(--muted);
}
.page-nav-btn {
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    padding: 0.25rem 0.85rem;
    cursor: pointer;
    font-size: 0.9rem;
    transition: border-color 0.15s, color 0.15s;
    line-height: 1.4;
}
.page-nav-btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.page-nav-btn:disabled { opacity: 0.3; cursor: not-allowed; }

/* ── Params panel ───────────────────────────────────────── */
.btn-params {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--muted);
    font-size: 0.82rem;
    padding: 0.35rem 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    transition: border-color .15s, color .15s;
}
.btn-params:hover, .btn-params[aria-expanded="true"] {
    border-color: var(--accent);
    color: var(--accent);
}
.params-panel {
    margin-top: 0.75rem;
    padding: 0.85rem 1rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
}
.params-fieldset { border: none; padding: 0; margin: 0; }
.params-legend {
    font-size: 0.78rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: .06em;
    margin-bottom: 0.5rem;
}
.params-radio {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.88rem;
    color: var(--text);
    cursor: pointer;
    margin-bottom: 0.35rem;
    user-select: none;
}
.params-radio input { cursor: pointer; accent-color: var(--accent); }

/* ── Realize toolbar (show-computed toggle) ─────────────── */
.real-toolbar {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.3rem 0 0.5rem;
}
.cb-label {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.82rem;
    color: var(--muted);
    cursor: pointer;
    user-select: none;
}
.cb-label input { cursor: pointer; accent-color: #7070b0; }
.cb-swatch {
    display: inline-block;
    width: 1.8em;
    height: 0.7em;
    border-radius: 2px;
    background: #7070b0;
    opacity: 0.85;
}

/* ── Score wrap & placeholder ───────────────────────────── */
.score-wrap {
    background: #fff;
    border-radius: 8px;
    padding: 0.75rem 1rem;
    overflow-x: auto;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.score-wrap svg { max-width: 100%; height: auto; display: block; }
.score-placeholder {
    color: #888;
    font-size: 0.88rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 2rem;
}
.score-error { color: #c0392b; }

/* Clickable chord / note hints in score */
.chord-clickable, .note-clickable { cursor: pointer; }