:root {
  /* Brand colors */
  --color-brand-blue:        #1565C0;
  --color-brand-orange:      #F07C00;
  --color-brand-orange-dark: #D96E00;
  --color-brand-orange-bg:   #FEF3E8;

  /* Background */
  --color-bg-page:    #F5F7FA;
  --color-bg-white:   #FFFFFF;
  --color-bg-input:   #EBF4FF;
  --color-bg-sidebar: #FFFFFF;

  /* Text */
  --color-text-primary:   #1A1A2E;
  --color-text-secondary: #6B7280;
  --color-text-muted:     #9CA3AF;
  --color-text-accent:    #F07C00;
  --color-text-link:      #4A90D9;

  /* Borders */
  --color-border:         #E5E7EB;
  --color-border-input:   #93C5FD;
  --color-border-focus:   #1565C0;

  /* Table */
  --color-table-header-bg: #FEF3E8;
  --color-table-row-alt:   #FAFAFA;

  /* Sidebar */
  --sidebar-width:          220px;
  --sidebar-width-collapsed: 60px;

  /* Notification */
  --color-notification-bg:     #FFFFFF;
  --color-notification-border: #E5E7EB;

  /* Spacing scale */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-8:  32px;
  --space-10: 40px;
  --space-12: 48px;

  /* Typography */
  --font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-size-xs:  11px;
  --font-size-sm:  13px;
  --font-size-md:  14px;
  --font-size-base: 15px;
  --font-size-lg:  18px;
  --font-size-xl:  22px;
  --font-size-2xl: 28px;
  --font-weight-normal:    400;
  --font-weight-medium:    500;
  --font-weight-semibold:  600;
  --font-weight-bold:      700;

  /* Radii */
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08);
  --shadow-md:  0 2px 8px rgba(0,0,0,0.10);
  --shadow-lg:  0 4px 16px rgba(0,0,0,0.12);

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-normal: 250ms ease;
}