*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-primary:#0a0f1e;--bg-secondary:#111827;--bg-card:#1a2236;--text-primary:#e2e8f0;--text-secondary:#94a3b8;--text-muted:#64748b;--border:#2d3748;--accent:#3b82f6;--accent-hover:#2563eb;--radius-sm:8px;--radius-md:10px;--radius-lg:12px}html,body{background-color:var(--bg-primary);color:var(--text-primary);min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:16px;line-height:1.6}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.25rem 1.5rem}button{cursor:pointer;font:inherit;background:0 0;border:none;padding:0}.btn{background:var(--accent);color:#fff;border-radius:var(--radius-sm);cursor:pointer;border:none;justify-content:center;align-items:center;gap:.5rem;padding:.5rem 1rem;font-size:.9rem;font-weight:500;transition:background .15s;display:inline-flex}.btn:hover{background:var(--accent-hover)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{color:var(--text-secondary);border:1px solid var(--border);background:0 0}.btn-secondary:hover{background:var(--bg-secondary);color:var(--text-primary)}input,textarea,select{background:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border);border-radius:var(--radius-sm);outline:none;width:100%;padding:.5rem .75rem;font-size:.9rem;transition:border-color .15s}input:focus,textarea:focus,select:focus{border-color:var(--accent)}input::placeholder,textarea::placeholder{color:var(--text-muted)}.text-secondary{color:var(--text-secondary)}.text-muted{color:var(--text-muted)}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.tradesystem-shell{background:#0a0a0f;min-height:100vh}.tradesystem-frame{background:#0a0a0f;border:0;width:100%;height:100vh;display:block}