*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#09090b;--card:#111113;--border:#222225;
  --text:#e4e4e7;--muted:#71717a;--dim:#3f3f46;
  --green:#76b900;--green-dim:#3d5c00;
  --red:#ef4444;--red-dim:#3b1111;
}
body{font-family:-apple-system,BlinkMacSystemFont,'Inter','Segoe UI',sans-serif;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.5}
.container{max-width:680px;margin:0 auto;padding:48px 20px}
header{text-align:center;margin-bottom:40px}
h1{font-size:2rem;font-weight:700;background:linear-gradient(135deg,var(--green),#00d4aa);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.tagline{color:var(--muted);font-size:0.9rem;margin-top:4px}
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:32px}
footer{text-align:center;color:var(--dim);font-size:0.75rem;margin-top:32px}
footer a{color:var(--muted);text-decoration:none}
footer a:hover{color:var(--green)}

.upload-zone{border:2px dashed var(--border);border-radius:12px;padding:48px 32px;text-align:center;cursor:pointer;transition:all .15s}
.upload-zone:hover,.upload-zone.dragover{border-color:var(--green);background:rgba(118,185,0,.04)}
.upload-icon{color:var(--dim);margin-bottom:16px}
.upload-zone p{color:var(--muted);font-size:0.95rem}
.browse{color:var(--green);cursor:pointer;text-decoration:underline;text-underline-offset:2px}
.hint{color:var(--dim);font-size:0.8rem;margin-top:6px}

.file-info{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:rgba(255,255,255,.03);border:1px solid var(--border);border-radius:10px;margin-top:16px}
.file-name{font-weight:500;font-size:0.9rem}
.file-size{color:var(--muted);font-size:0.8rem;margin-left:12px}
.btn-icon{background:none;border:none;color:var(--muted);font-size:1.3rem;cursor:pointer;padding:4px 8px;border-radius:6px}
.btn-icon:hover{color:var(--red);background:var(--red-dim)}

.options{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:16px}
.option label{display:block;font-size:0.75rem;color:var(--muted);margin-bottom:4px;text-transform:uppercase;letter-spacing:.5px}
.option select{width:100%;padding:10px 12px;background:var(--bg);border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:0.9rem;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2371717a' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center}
.option select:focus{outline:none;border-color:var(--green)}

.btn-primary{width:100%;padding:14px;border:none;border-radius:10px;font-size:1rem;font-weight:600;cursor:pointer;margin-top:20px;transition:all .15s;background:linear-gradient(135deg,var(--green),#00d4aa);color:#000;display:flex;align-items:center;justify-content:center;gap:8px}
.btn-primary:hover:not(:disabled){opacity:.9;transform:translateY(-1px)}
.btn-primary:disabled{opacity:.3;cursor:not-allowed;transform:none}
.btn-primary .spinner{width:18px;height:18px;border:2px solid transparent;border-top-color:#000;border-radius:50%;animation:spin .6s linear infinite;display:none}
.btn-primary.loading .spinner{display:block}
.btn-primary.loading .btn-text{display:none}
@keyframes spin{to{transform:rotate(360deg)}}

.progress{margin-top:20px}
.progress-bar{height:3px;background:var(--border);border-radius:2px;overflow:hidden}
.progress-fill{height:100%;background:linear-gradient(90deg,var(--green),#00d4aa);width:0%;transition:width .3s}
.progress-info{display:flex;justify-content:space-between;margin-top:8px;font-size:0.8rem;color:var(--muted)}

.error{padding:14px 16px;background:var(--red-dim);border:1px solid rgba(239,68,68,.2);border-radius:10px;color:var(--red);font-size:0.9rem;margin-top:16px}

.results{margin-top:24px}
.results-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.results-header h3{font-size:1rem;font-weight:600}
.results-actions{display:flex;gap:8px}
.btn-secondary{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;background:transparent;border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:0.8rem;cursor:pointer;transition:all .15s}
.btn-secondary:hover{border-color:var(--green);color:var(--green)}

.stats{display:flex;gap:12px;margin-bottom:16px}
.stat{padding:10px 16px;background:rgba(255,255,255,.02);border:1px solid var(--border);border-radius:8px;text-align:center}
.stat-value{font-size:1.3rem;font-weight:700;color:var(--green)}
.stat-label{font-size:0.7rem;color:var(--muted);text-transform:uppercase;letter-spacing:.5px;margin-top:2px}

.preview-wrap{border:1px solid var(--border);border-radius:10px;overflow:auto;max-height:400px;background:rgba(0,0,0,.2)}
.preview{width:100%;border-collapse:collapse;font-size:0.8rem;font-family:'SF Mono',Consolas,monospace}
.preview th{background:rgba(255,255,255,.04);padding:10px 14px;text-align:left;font-weight:600;position:sticky;top:0;border-bottom:2px solid var(--border);white-space:nowrap}
.preview td{padding:8px 14px;border-bottom:1px solid rgba(255,255,255,.03);white-space:nowrap}
.preview tr:hover td{background:rgba(118,185,0,.03)}