.ftool-btn{font-family:var(--font-sans);font-size:.75rem;font-weight:700;letter-spacing:.5px;padding:.5rem 1rem;border:1px solid #e2e8f0;border-radius:var(--radius-button, 6px);cursor:pointer;transition:all .2s ease;box-shadow:#0000001a 0 4px 6px;margin:.25rem}.ftool-btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px #e072034d}.ftool-btn-primary{background:var(--tool-color, #e07203);color:#fff}html[data-theme=dark] .ftool-btn{border-color:#3f3f46;box-shadow:#0003 0 4px 6px}.file-rows{display:flex;flex-direction:column;gap:8px;max-height:300px;overflow-y:auto;padding:4px}.file-rows .move-btn{border:none;background:linear-gradient(135deg,#e07203,#ad6924);color:#fff}.file-rows .move-btn:hover:not(:disabled){background:linear-gradient(135deg,#ad6924 0% 100%)}.file-rows .move-btn:disabled{background:#d1d5db}html[data-theme=dark] .file-rows .move-btn:disabled{background:#4b5563}.result-inline-download:hover{background:linear-gradient(135deg,#e07203,#ad6924);color:#fff;border-color:transparent}.card-button.merge-btn,.card-button.add-btn,.card-button.back-btn{flex:1;min-width:0}.card-button.merge-btn:disabled{opacity:.45;cursor:not-allowed;pointer-events:none}.merge-reset-btn{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;margin-left:auto;padding:0;background:transparent;border:1px solid transparent;border-radius:8px;color:#94a3b8;cursor:pointer;transition:background .15s ease,color .15s ease,border-color .15s ease}.merge-reset-btn:hover{background:#ef444414;color:#ef4444;border-color:#ef444440}html[data-theme=dark] .merge-reset-btn{color:#71717a}html[data-theme=dark] .merge-reset-btn:hover{background:#ef44441f;color:#fca5a5;border-color:#ef44444d}.merge-footer{display:flex;align-items:center;gap:8px;margin:10px 4px 0;padding:6px 2px;font-family:var(--font-sans);font-size:12px;color:#64748b}.merge-footer-count{font-weight:700;color:#334155}.merge-footer-sep{color:#cbd5e1}html[data-theme=dark] .merge-footer{color:#a1a1aa}html[data-theme=dark] .merge-footer-count{color:#e4e4e7}html[data-theme=dark] .merge-footer-sep{color:#52525b}.merge-filename-row{display:flex;align-items:center;gap:10px;margin:10px 4px 2px;padding:8px 10px;background:#f8fafc80;border:1px solid #e2e8f0;border-radius:8px}html[data-theme=dark] .merge-filename-row{background:#27272a80;border-color:#3f3f46}.merge-filename-label{flex-shrink:0;font-family:var(--font-sans);font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:#94a3b8}html[data-theme=dark] .merge-filename-label{color:#71717a}.merge-filename-input-wrap{display:flex;align-items:baseline;flex:1;min-width:0;gap:2px}.merge-filename-input{flex:1;min-width:0;background:transparent;border:none;outline:none;font-family:var(--font-mono);font-size:13px;font-weight:500;color:#0f172a;padding:2px 0}html[data-theme=dark] .merge-filename-input{color:#e4e4e7}.merge-filename-input::placeholder{color:#94a3b8}.merge-filename-suffix{font-family:var(--font-mono);font-size:13px;font-weight:500;color:#94a3b8;flex-shrink:0}html[data-theme=dark] .merge-filename-suffix{color:#71717a}.merge-hint{margin:10px 0 0;font-family:var(--font-sans);font-size:12px;color:#94a3b8;text-align:center;min-height:16px;transition:color .2s ease}.merge-hint.visible{color:#e07203}html[data-theme=dark] .merge-hint{color:#71717a}html[data-theme=dark] .merge-hint.visible{color:#eda54e}.neo-card.drag-over-list{outline:2px dashed rgba(224,114,3,.5);outline-offset:4px;background:#e0720308}html[data-theme=dark] .neo-card.drag-over-list{background:#e072030f}.card-button.back-btn{background:#f1f5f9;color:#334155;border:1px solid #e2e8f0}.card-button.back-btn:hover{background:#e2e8f0;color:#0f172a}html[data-theme=dark] .card-button.back-btn{background:#27272a;color:#d4d4d8;border-color:#3f3f46}html[data-theme=dark] .card-button.back-btn:hover{background:#3f3f46;color:#fafafa}.merge-progress{position:relative;width:100%;height:6px;background:#e2e8f0;border:none;border-radius:999px;overflow:hidden}html[data-theme=dark] .merge-progress{background:#3f3f46}.merge-progress-fill{position:absolute;top:0;left:0;height:100%;background:var(--tool-color, #e07203);border-radius:999px;transition:width .3s ease}.merge-progress-text{position:relative;font-family:var(--font-sans);font-size:12px;font-weight:600;color:#64748b;margin-top:6px;text-align:center}html[data-theme=dark] .merge-progress-text{color:#a1a1aa}