:root{--bg:#fdfdfd;--text:#212121;--primary:#1565c0;--primary-hover:#0d47a1;--border:#e0e0e0;--chord-bg:#fff3e0;--chord-text:#e65100;--card-bg:#fff;--section-label:#1565c0}[data-theme=dark]{--bg:#1a1a2e;--text:#e0e0e0;--primary:#42a5f5;--primary-hover:#90caf9;--border:#335;--chord-bg:#2d1b00;--chord-text:#ffab40;--card-bg:#16213e;--section-label:#66bb6a}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;transition:background .3s,color .3s}a{color:var(--primary);text-decoration:none}button,input,textarea,select{font-family:inherit}input,textarea{border:1px solid var(--border);background:var(--bg);color:var(--text);border-radius:6px;padding:.5rem 1rem;font-size:.95rem}button{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:6px;padding:.7rem 1.4rem;font-size:.95rem}button:hover{background:var(--primary-hover)}.card{background:var(--card-bg);border:1px solid var(--border);border-radius:10px;padding:1.2rem;transition:background .3s,border-color .3s}.container{max-width:960px;margin:0 auto;padding:1rem}.chord-badge{background:var(--chord-bg);color:var(--chord-text);border-radius:4px;padding:2px 8px;font-size:.85rem;font-weight:600}