body.auth-shell {
    --auth-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --auth-card-width: 450px;
    --auth-card-radius: 12px;
    --auth-card-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    --auth-accent: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --auth-input-border: #e0e0e0;
    --auth-input-focus-border: #667eea;
    --auth-input-focus-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    --auth-focus-outline: rgba(102, 126, 234, 0.35);
    --auth-button-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --auth-button-bg-hover: linear-gradient(135deg, #5a6fe0 0%, #6a4294 100%);
    --auth-button-shadow-hover: 0 5px 15px rgba(102, 126, 234, 0.4);
    --auth-button-font-weight: 600;
    --auth-link: #667eea;
    --auth-link-hover: #5a6fe0;
    --auth-footer-bg: #f8f9fa;
    --auth-footer-text: #666;
}