:root {
  /* Colors - Background & Panels */
  --bg-dark-base: #0B0F19;
  --bg-dark-surface: #111827;
  --bg-dark-card: #1E293B;
  --bg-dark-card-hover: #273549;
  --bg-dark-glass: rgba(30, 41, 59, 0.7);
  --bg-input: #0F172A;

  /* Accent & Brand Colors */
  --brand-primary: #FF2A5F;
  --brand-primary-hover: #E01E50;
  --brand-primary-light: rgba(255, 42, 95, 0.15);
  --brand-secondary: #8B5CF6;
  --brand-secondary-light: rgba(139, 92, 246, 0.15);
  
  /* Status Colors */
  --color-success: #10B981;
  --color-success-bg: rgba(16, 185, 129, 0.12);
  --color-warning: #F59E0B;
  --color-warning-bg: rgba(245, 158, 11, 0.12);
  --color-danger: #EF4444;
  --color-danger-bg: rgba(239, 68, 68, 0.12);
  --color-info: #06B6D4;
  --color-info-bg: rgba(6, 182, 212, 0.12);

  /* Diagnostics Tags Colors */
  --diag-thumb-color: #EF4444;
  --diag-thumb-bg: rgba(239, 68, 68, 0.15);
  --diag-hook-color: #F59E0B;
  --diag-hook-bg: rgba(245, 158, 11, 0.15);
  --diag-growth-color: #10B981;
  --diag-growth-bg: rgba(16, 185, 129, 0.15);
  --diag-loyalty-color: #8B5CF6;
  --diag-loyalty-bg: rgba(139, 92, 246, 0.15);

  /* Text Colors */
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --text-inverse: #0F172A;

  /* Borders & Shadows */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(255, 42, 95, 0.3);
  --border-focus: #FF2A5F;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(255, 42, 95, 0.25);

  /* Typography */
  --font-family-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-family-heading: 'Outfit', 'Inter', sans-serif;

  /* Layout & Sizing */
  --header-height: 64px;
  --sidebar-width: 275px;
  --bottom-nav-height: 68px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);

  /* Mobile Safe Area */
  --safe-area-top: env(safe-area-inset-top, 0px);
  --safe-area-bottom: env(safe-area-inset-bottom, 0px);
}