:root{--primary:#2563eb;--primary-hover:#1d4ed8;--bg-main:#f8fafc;--bg-card:#fff;--text-main:#0f172a;--text-muted:#64748b;--border:#e2e8f0;--radius:12px;--shadow:0 4px 6px -1px #0000001a, 0 2px 4px -2px #0000001a;--glass:#ffffffb3}[data-theme=dark]{--primary:#3b82f6;--primary-hover:#60a5fa;--bg-main:#020617;--bg-card:#0f172a;--text-main:#f1f5f9;--text-muted:#94a3b8;--border:#1e293b;--glass:#0f172ab3}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-main);color:var(--text-main);min-height:100vh;font-family:Inter,system-ui,-apple-system,sans-serif;transition:background-color .3s,color .3s}.app-container{max-width:1000px;margin:0 auto;padding:2rem}.glass-card{background:var(--glass);-webkit-backdrop-filter:blur(8px);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:2rem;padding:2rem}.header{justify-content:space-between;align-items:center;margin-bottom:3rem;display:flex}.title-group h1{background:linear-gradient(135deg, var(--primary), #8b5cf6);-webkit-text-fill-color:transparent;letter-spacing:-.025em;-webkit-background-clip:text;font-size:2.5rem;font-weight:800}.title-group p{color:var(--text-muted);font-size:1.1rem}.btn{cursor:pointer;border:none;border-radius:8px;align-items:center;gap:.5rem;padding:.75rem 1.5rem;font-weight:600;transition:all .2s;display:inline-flex}.btn-primary{background-color:var(--primary);color:#fff}.btn-primary:hover{background-color:var(--primary-hover);transform:translateY(-1px)}.btn-outline{border:1px solid var(--border);color:var(--text-main);background-color:#0000}.btn-outline:hover{background-color:var(--border)}.drop-zone{border:2px dashed var(--border);border-radius:var(--radius);cursor:pointer;background:var(--bg-card);flex-direction:column;align-items:center;gap:1.5rem;padding:4rem 2rem;transition:all .2s;display:flex}.drop-zone:hover,.drop-zone.active{border-color:var(--primary);background-color:#2563eb0d}.preview-grid{grid-template-columns:1fr 350px;gap:2rem;margin-top:2rem;display:grid}.pdf-viewer{border-radius:var(--radius);background:#525659;justify-content:center;min-height:600px;padding:1rem;display:flex;position:relative;overflow:auto}canvas{max-width:100%;height:auto;box-shadow:0 10px 15px -3px #0000001a}.qr-overlay{pointer-events:none;background-color:#10b98133;border:3px solid #10b981;border-radius:4px;position:absolute}.form-group{margin-bottom:1rem}.form-group label{color:var(--text-muted);margin-bottom:.25rem;font-size:.875rem;font-weight:500;display:block}.form-control{border:1px solid var(--border);background-color:var(--bg-card);width:100%;color:var(--text-main);border-radius:6px;padding:.625rem;font-family:inherit}.form-control:focus{outline:2px solid var(--primary);border-color:#0000}.form-control.is-invalid{border-color:#0000;outline:2px solid #ef4444}.error-text{color:#ef4444;margin-top:.25rem;font-size:.75rem;display:block}.loader{border:3px solid #ffffff4d;border-top-color:#fff;border-radius:50%;width:24px;height:24px;animation:1s ease-in-out infinite spin}@keyframes spin{to{transform:rotate(360deg)}}@media (width<=768px){.preview-grid{grid-template-columns:1fr}}