.mode-btn{background:none;border:1px solid var(--color-border, #ccc);border-radius:6px;padding:6px 12px;cursor:pointer;font-size:14px;color:var(--color-text, #333)}.mode-btn:hover{background:var(--color-surface-hover, #eee)}.mode-btn.active{background:#1976d2;color:#fff;border-color:#1976d2}.clear-btn{background:none;border:1px solid var(--color-border, #ccc);border-radius:6px;padding:6px 12px;cursor:pointer;font-size:14px;color:#c62828}.clear-btn:hover{background:#ffebee}.clear-btn.confirm-active{background:#ffebee;border-color:#e53935;color:#c62828}