*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{color:#333;background:#f5f5f5;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.6}button{cursor:pointer}a{color:#2563eb;text-decoration:none}.app{max-width:800px;margin:0 auto;padding:2rem 1rem}.header{text-align:center;margin-bottom:2rem}.header h1{color:#1a1a1a;font-size:1.8rem}.search-bar{margin-bottom:1.5rem}.search-bar input{border:1px solid #ddd;border-radius:8px;outline:none;width:100%;padding:.75rem 1rem;font-size:1rem;transition:border-color .2s}.search-bar input:focus{border-color:#2563eb}.song-list{list-style:none}.song-item{cursor:pointer;background:#fff;border-radius:8px;justify-content:space-between;align-items:center;margin-bottom:.5rem;padding:1rem 1.25rem;transition:box-shadow .15s;display:flex}.song-item:hover{box-shadow:0 2px 8px #0000001a}.song-item .song-info{flex-direction:column;display:flex}.song-item .song-name{font-size:1.05rem;font-weight:600}.song-item .song-meta{color:#666;font-size:.85rem}.song-item .song-bpm{color:#888;font-variant-numeric:tabular-nums;font-size:.9rem}.back-link{color:#2563eb;margin-bottom:1.5rem;font-size:.95rem;display:inline-block}.back-link:hover{text-decoration:underline}.song-detail{background:#fff;border-radius:8px;padding:2rem}.song-detail h2{margin-bottom:.25rem;font-size:1.5rem}.song-detail .author{color:#666;margin-bottom:1.5rem}.detail-grid{grid-template-columns:1fr 1fr;gap:.75rem;margin-bottom:1.5rem;display:grid}.detail-item{flex-direction:column;display:flex}.detail-item .label{color:#888;text-transform:uppercase;letter-spacing:.05em;font-size:.8rem}.detail-item .value{font-size:1rem}.download-btn{color:#fff;background:#2563eb;border:none;border-radius:6px;padding:.6rem 1.5rem;font-size:.95rem;transition:background .2s;display:inline-block}.download-btn:hover{background:#1d4ed8}.download-btn:disabled{background:#94a3b8}.loading,.empty{text-align:center;color:#888;padding:2rem}.error{text-align:center;color:#dc2626;padding:2rem}