.upload-section{display:flex;gap:var(--space-md);margin-bottom:var(--space-lg)}.upload-section .drop-zone{flex:1;margin-bottom:0;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:80px;padding:var(--space-lg)}.btn-record{background-color:var(--danger);color:#fff;border:1px solid var(--danger);font-weight:700;font-size:var(--font-size-md);padding:8px 24px;white-space:nowrap;flex-shrink:0;gap:8px}.btn-record:hover{background-color:#c53030;border-color:#c53030}.btn-record.recording{animation:pulse-red 1s infinite}@keyframes pulse-red{0%,100%{background-color:var(--danger)}50%{background-color:#fc8181}}.record-dot{width:12px;height:12px;background:#fff;border-radius:50%;display:inline-block;transition:border-radius .15s}.file-info-bar{background:var(--panel-bg);border:1px solid var(--border-color);border-radius:var(--radius);padding:var(--space-sm)var(--space-md);margin-bottom:var(--space-md);display:flex;align-items:center;justify-content:space-between;gap:var(--space-md)}.file-info-bar .file-name{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}.file-info-bar .file-meta{color:var(--text-muted);font-size:var(--font-size-sm);white-space:nowrap}.waveform-section{background:var(--panel-bg);border:1px solid var(--border-color);border-radius:var(--radius);padding:var(--space-md);margin-bottom:var(--space-lg)}.waveform-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:var(--space-sm);gap:var(--space-md)}.waveform-header>div:first-child{flex:1}.waveform-header h3{margin:0;font-size:var(--font-size-sm);text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted)}.audio-controls{display:flex;align-items:center;gap:var(--space-sm)}.audio-time{font-size:var(--font-size-sm);color:var(--text-muted);font-variant-numeric:tabular-nums;min-width:90px;text-align:center}#waveform-canvas{width:100%;height:100px;display:block;cursor:pointer;border-radius:var(--radius);background:#f8fafc}.audio-settings-panel{display:block!important;background:var(--panel-bg);border:1px solid var(--border-color);border-radius:var(--radius);margin-bottom:var(--space-lg);overflow:hidden}.settings-toggle{display:flex;align-items:center;justify-content:space-between;padding:var(--space-sm)var(--space-md);cursor:pointer;user-select:none;border:none;background:0 0;width:100%;text-align:left;color:inherit;font:inherit}.settings-toggle:hover{background:rgba(0,0,0,3%)}.settings-toggle h3{margin:0;font-size:var(--font-size-sm);text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted)}.settings-chevron{font-size:18px;color:var(--text-muted);transition:transform .2s}.audio-settings-panel.collapsed .settings-chevron{transform:rotate(-90deg)}.settings-body{padding:0 var(--space-md)var(--space-md)}.audio-settings-panel.collapsed .settings-body{display:none}.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-md)var(--space-xl)}.settings-apply{margin-top:var(--space-md);padding-top:var(--space-md);border-top:1px solid var(--border-color);text-align:right}.setting-item label{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:4px;font-weight:600}.setting-item label .setting-value{font-weight:600;color:var(--primary);font-size:var(--font-size-sm)}.setting-item .setting-desc{font-size:var(--font-size-xs);color:var(--text-muted);margin-bottom:4px}.setting-item input[type=range]{width:100%}.setting-range-labels{display:flex;justify-content:space-between;font-size:var(--font-size-xs);color:var(--text-light);margin-top:2px}.convert-section{text-align:right;display:flex;flex-direction:column;align-items:flex-end;gap:4px}.btn-convert-main{font-size:var(--font-size-md);padding:12px 32px;white-space:nowrap}.btn-convert-main:disabled{opacity:.5;cursor:not-allowed}.convert-hint{font-size:var(--font-size-xs);color:var(--text-muted);white-space:nowrap}.progress-section{background:var(--panel-bg);border:1px solid var(--border-color);border-radius:var(--radius);padding:var(--space-md);margin-bottom:var(--space-lg)}.progress-section h3{margin:0 0 var(--space-sm);font-size:var(--font-size-sm);text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted)}.progress-bar-track{width:100%;height:8px;background:#e2e8f0;border-radius:4px;overflow:hidden;margin-bottom:var(--space-xs)}.progress-bar-fill{height:100%;background:var(--primary);border-radius:4px;transition:width .15s ease;width:0%}.progress-text{font-size:var(--font-size-sm);color:var(--text-muted);text-align:center}.midi-section{background:var(--panel-bg);border:1px solid var(--border-color);border-radius:var(--radius);padding:var(--space-md);margin-bottom:var(--space-lg)}.midi-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-sm)}.midi-header h3{margin:0;font-size:var(--font-size-sm);text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted)}.midi-stats{font-size:var(--font-size-sm);color:var(--text-muted)}.midi-controls{display:flex;align-items:center;gap:var(--space-sm);margin-bottom:var(--space-sm)}.midi-time{font-size:var(--font-size-sm);color:var(--text-muted);font-variant-numeric:tabular-nums;min-width:90px;text-align:center}#pianoroll-canvas{width:100%;height:250px;display:block;border-radius:var(--radius);background:#1a202c;cursor:default}.drag-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.75);z-index:9999;display:flex;align-items:center;justify-content:center;pointer-events:none}.drag-overlay[hidden]{display:none}.drag-overlay-content{text-align:center;color:#fff}.drag-overlay-icon{font-size:64px;margin-bottom:var(--space-md)}.drag-overlay-text{font-size:var(--font-size-xl);font-weight:600}@media(max-width:600px){.upload-section{flex-direction:column}.settings-grid{grid-template-columns:1fr}}