.audio-settings{background:var(--card-bg);border:1px solid var(--border);border-radius:12px;padding:1.5rem;margin-bottom:1.5rem}.file-info{display:flex;justify-content:space-between;align-items:center;padding:1rem;background:var(--bg);border-radius:8px;margin-bottom:1.5rem}.file-name{font-weight:600;word-break:break-all}.file-size{color:var(--text-muted);white-space:nowrap;margin-left:1rem}.format-selector,.bitrate-selector{margin-bottom:1.5rem}.format-selector label,.bitrate-selector label{display:block;font-weight:600;margin-bottom:.75rem}.format-options{display:grid;grid-template-columns:repeat(4,1fr);gap:.5rem}.format-btn{padding:.75rem;background:var(--bg);border:2px solid var(--border);border-radius:8px;cursor:pointer;font-weight:600;font-size:.875rem;transition:all .2s ease}.format-btn:hover{border-color:var(--primary)}.format-btn.active{background:var(--primary);border-color:var(--primary);color:#fff}.bitrate-select{width:100%;padding:.75rem;font-size:1rem;border:2px solid var(--border);border-radius:8px;background:var(--bg);cursor:pointer}.convert-btn{width:100%;padding:1rem;font-size:1.125rem}.processing-status{text-align:center;padding:2rem}.progress-bar{width:100%;height:12px;background:var(--border);border-radius:6px;overflow:hidden;margin-bottom:1rem}.progress-fill{height:100%;background:linear-gradient(90deg,#3b82f6,#8b5cf6);border-radius:6px;transition:width .3s ease}.progress-text{font-size:1rem;color:var(--text-muted)}.error-message{text-align:center;padding:2rem;background:var(--color-error-subtle);border-radius:12px;color:var(--color-error)}.error-message p{margin-bottom:1rem}.result-container{background:var(--card-bg);border:1px solid var(--border);border-radius:12px;padding:1.5rem;margin-bottom:1.5rem}.size-comparison{display:flex;align-items:center;justify-content:center;gap:1.5rem;margin-bottom:1.5rem;padding:1rem;background:var(--bg);border-radius:8px}.size-item{text-align:center}.size-label{display:block;font-size:.75rem;color:var(--text-muted);margin-bottom:.25rem}.size-value{font-weight:700;font-size:1.125rem}.size-arrow{font-size:1.5rem;color:var(--text-muted)}.audio-preview{width:100%;margin-bottom:1rem}.action-buttons{display:flex;gap:.75rem;justify-content:center}.privacy-note{text-align:center;font-size:.875rem;color:var(--text-muted);padding:1rem;background:var(--card-bg);border-radius:8px}