:root{--bg-primary: #0a0e1a;--bg-secondary: #121825;--bg-tertiary: #1a2332;--card-bg: linear-gradient(135deg, #161d2e 0%, #0f1720 100%);--card-border: rgba(99, 125, 255, .12);--card-hover: rgba(99, 125, 255, .08);--text-primary: #f1f5f9;--text-secondary: #cbd5e1;--text-muted: #94a3b8;--text-disabled: #64748b;--accent-primary: #637dff;--accent-secondary: #8b5cf6;--accent-success: #10b981;--accent-danger: #ef4444;--accent-warning: #f59e0b;--accent-info: #3b82f6;--shadow-sm: 0 2px 4px rgba(0, 0, 0, .3);--shadow-md: 0 4px 12px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .5);--shadow-xl: 0 16px 48px rgba(0, 0, 0, .6);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--radius-xl: 18px;--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--space-xl: 32px}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica 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3px #667eea1a}.form-group input:disabled{background-color:#f7fafc;cursor:not-allowed;opacity:.6}.login-button{width:100%;padding:14px 24px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:all .3s;display:flex;align-items:center;justify-content:center;gap:8px}.login-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 20px #667eea66}.login-button:active:not(:disabled){transform:translateY(0)}.login-button:disabled{opacity:.7;cursor:not-allowed}.spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.demo-accounts{padding:20px 0;border-top:1px solid #e2e8f0}.demo-title{color:#718096;font-size:13px;font-weight:600;text-align:center;margin:0 0 12px;text-transform:uppercase;letter-spacing:.5px}.demo-buttons{display:flex;flex-direction:column;gap:8px}.demo-button{padding:12px 16px;border:2px solid #e2e8f0;border-radius:8px;background:#fff;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:space-between}.demo-button:hover:not(:disabled){border-color:#cbd5e0;background:#f7fafc;transform:translate(4px)}.demo-button:disabled{opacity:.5;cursor:not-allowed}.role-badge{font-size:13px;font-weight:700;padding:4px 12px;border-radius:6px}.demo-button.admin .role-badge{background:#fed7d7;color:#c53030}.demo-button.viewer .role-badge{background:#bee3f8;color:#2c5282}.demo-button.trader .role-badge{background:#c6f6d5;color:#22543d}.role-desc{color:#718096;font-size:12px}.login-footer{margin-top:24px;padding-top:20px;border-top:1px solid #e2e8f0;text-align:center}.login-footer p{color:#a0aec0;font-size:12px;margin:0}@media (max-width: 480px){.login-container{padding:24px}.login-header h1{font-size:24px}.demo-buttons{flex-direction:column}}