:root{--bg: #0a0a0f;--surface: #12121a;--surface-2: #1a1a25;--border: #2a2a3a;--text: #e8e8ef;--text-2: #8888a0;--accent: #6c5ce7;--accent-light: #a29bfe;--green: #00b894;--red: #ff6b6b;--yellow: #ffd93d;--radius: 12px;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;--mono: "SF Mono", "Cascadia Code", "Fira Code", monospace}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh;padding:2rem;max-width:1200px;margin:0 auto}header{text-align:center;margin-bottom:2rem}header h1{font-size:2rem;font-weight:700}.subtitle{color:var(--text-2);margin-top:.5rem}.dropzone{border:2px dashed var(--border);border-radius:var(--radius);padding:3rem 2rem;text-align:center;cursor:pointer;transition:border-color .2s,background .2s}.dropzone:hover,.dropzone.dragover{border-color:var(--accent);background:#6c5ce70d}.dropzone-icon{font-size:3rem;display:block;margin-bottom:1rem}.dropzone-hint{color:var(--text-2);font-size:.85rem;margin-top:.5rem}.file-label{color:var(--accent-light);cursor:pointer;text-decoration:underline}.loading{text-align:center;padding:3rem}.spinner{width:40px;height:40px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;margin:0 auto 1rem}@keyframes spin{to{transform:rotate(360deg)}}.hidden{display:none!important}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;margin-bottom:1.5rem}.card h2{font-size:1.1rem;font-weight:600;margin-bottom:1rem}.info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1rem}.stat-box{background:var(--surface-2);border-radius:8px;padding:1rem;text-align:center}.stat-value{font-size:1.5rem;font-weight:700;font-family:var(--mono);color:var(--accent-light)}.stat-label{font-size:.8rem;color:var(--text-2);margin-top:.25rem}.preview-table-wrap{overflow-x:auto;margin-top:.75rem}.preview-table{width:100%;border-collapse:collapse;font-size:.85rem;font-family:var(--mono)}.preview-table th{background:var(--surface-2);color:var(--accent-light);padding:.5rem .75rem;text-align:left;white-space:nowrap;position:sticky;top:0;border-bottom:1px solid var(--border)}.preview-table td{padding:.4rem .75rem;border-bottom:1px solid var(--border);white-space:nowrap;max-width:300px;overflow:hidden;text-overflow:ellipsis}.preview-table tr:hover td{background:#6c5ce70d}.preview-note{color:var(--text-2);font-size:.8rem;margin-top:.5rem}.format-selector{display:flex;gap:.75rem;flex-wrap:wrap;margin-bottom:1.25rem}.format-option{cursor:pointer}.format-option input{display:none}.format-badge{display:inline-block;padding:.5rem 1.25rem;border-radius:8px;border:2px solid var(--border);background:var(--surface-2);font-family:var(--mono);font-size:.9rem;font-weight:600;transition:border-color .2s,background .2s,color .2s;color:var(--text-2)}.format-option input:checked+.format-badge{border-color:var(--accent);background:#6c5ce726;color:var(--accent-light)}.format-badge:hover{border-color:var(--accent)}.convert-btn{display:block;width:100%;padding:.9rem;border:none;border-radius:8px;background:var(--accent);color:#fff;font-size:1rem;font-weight:700;cursor:pointer;transition:background .2s,transform .1s}.convert-btn:hover{background:#5a4bd1}.convert-btn:active{transform:scale(.98)}.convert-btn:disabled{opacity:.5;cursor:not-allowed}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:1rem}.action-bar{text-align:center;margin-top:.5rem}.another-btn{background:var(--surface-2);border:1px solid var(--border);color:var(--text);padding:.6rem 1.5rem;border-radius:8px;cursor:pointer;font-size:.9rem;transition:background .2s}.another-btn:hover{background:var(--accent);color:#fff}footer{text-align:center;margin-top:3rem;padding-top:1.5rem;border-top:1px solid var(--border);color:var(--text-2);font-size:.85rem}footer a{color:var(--accent-light);text-decoration:none}footer a:hover{text-decoration:underline}