:root{--bg:#0a0c10;--surface:hsla(0,0%,100%,.04);--surface-hover:hsla(0,0%,100%,.07);--border:hsla(0,0%,100%,.08);--muted:#8892a4;--subtle:#4a5568;--ud-deep:#003a8c;--ud-light:#4da3ff;--ud-deep-glow:rgba(0,58,140,.2);--ud-light-glow:rgba(77,163,255,.2);--green:#2ecc71;--yellow:#f1c40f;--red:#e74c3c}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:#e2e8f0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}@keyframes pulse-blue{0%,to{box-shadow:0 0 0 0 rgba(77,163,255,.4)}50%{box-shadow:0 0 0 8px rgba(77,163,255,0)}}@keyframes slide-in{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.animate-in{animation:slide-in .3s ease forwards}.drop-zone{border:2px dashed var(--border);border-radius:16px;padding:48px 24px;text-align:center;cursor:pointer;transition:border-color .2s,background .2s}.drop-zone.active,.drop-zone:hover{border-color:var(--ud-light);background:var(--ud-light-glow)}.btn-primary{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;background:var(--ud-deep);color:#fff;font-weight:600;font-size:14px;border-radius:8px;border:none;cursor:pointer;transition:opacity .2s}.btn-primary:hover{opacity:.85}.btn-primary:disabled{opacity:.4;cursor:not-allowed}.btn-secondary{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;background:transparent;color:var(--ud-light);font-weight:600;font-size:14px;border-radius:8px;border:1px solid rgba(77,163,255,.3);cursor:pointer;transition:background .2s}.btn-secondary:hover{background:var(--ud-light-glow)}.progress-bar{height:4px;background:var(--border);border-radius:2px;overflow:hidden}.progress-fill{height:100%;background:linear-gradient(90deg,var(--ud-deep),var(--ud-light));border-radius:2px;transition:width .3s ease}