:root{--wa-green:#25d366;--wa-green-dark:#128c7e;--wa-teal:#075e54;--fb-blue:#1877f2;--fb-blue-dark:#145dbf;--bg-gradient:linear-gradient(135deg,#0f2027,#203a43 50%,#2c5364);--card-bg:#fff;--card-shadow:0 20px 60px rgba(0,0,0,.15),0 0 0 1px rgba(0,0,0,.04);--text-primary:#1a1a2e;--text-secondary:#64748b;--text-muted:#94a3b8;--error-red:#ef4444;--error-bg:#fef2f2;--error-border:#fecaca;--info-bg:#f0f9ff;--info-border:#bae6fd;--surface-subtle:#f8fafc}@media (prefers-color-scheme:dark){:root{--bg-gradient:linear-gradient(135deg,#0a0a0a,#111827 50%,#0f172a);--card-bg:#1e293b;--card-shadow:0 20px 60px rgba(0,0,0,.4),0 0 0 1px hsla(0,0%,100%,.06);--text-primary:#f1f5f9;--text-secondary:#94a3b8;--text-muted:#64748b;--error-bg:#1c1017;--error-border:#7f1d1d;--info-bg:#0c1929;--info-border:#1e3a5f;--surface-subtle:#0f172a}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica 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8px;border-radius:6px;display:inline-block;margin-top:4px}.info-section,.vendor-id{background:var(--surface-subtle)}.info-section{border-radius:14px;padding:18px;margin-bottom:24px}.info-section h3{font-size:15px;font-weight:600;color:var(--text-primary);margin:0 0 12px}.requirements-list{list-style:none;padding:0;margin:0}.requirements-list li{display:flex;align-items:center;gap:10px;padding:8px 0;font-size:14px;color:var(--text-secondary)}.requirements-list li svg{flex-shrink:0;color:var(--wa-green)}.connect-button{width:100%;background:linear-gradient(135deg,var(--wa-green) 0,var(--wa-teal) 100%);color:#fff;border:none;border-radius:14px;padding:16px 24px;font-size:16px;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:10px;transition:all .2s ease;box-shadow:0 4px 14px 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errorPop{0%{transform:scale(.5);opacity:0}60%{transform:scale(1.1)}to{transform:scale(1);opacity:1}}.error-description{font-size:15px;color:var(--text-secondary);line-height:1.6;margin-bottom:24px}.retry-button{background:linear-gradient(135deg,var(--wa-green) 0,var(--wa-teal) 100%);color:#fff;border:none;border-radius:12px;padding:13px 28px;font-size:15px;font-weight:600;cursor:pointer;transition:all .2s ease;box-shadow:0 4px 14px rgba(37,211,102,.25)}.retry-button:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(37,211,102,.35)}.retry-button:active{transform:translateY(0)}@media (max-width:600px){.onboarding-card{padding:28px 20px;border-radius:16px}.logo-section h1{font-size:20px}.subtitle{font-size:14px}.loading-card{padding:36px 20px}.loading-animation{width:80px;height:80px}.loading-text{font-size:15px}.error-card{padding:36px 20px}.error-card h2{font-size:18px}.error-description{font-size:14px}}