/* ===========================================
   CSS Custom Properties - Design Tokens
   =========================================== */

:root {
  /* Background Colors */
  --color-bg-primary: #0a0a0f;
  --color-bg-secondary: #12121a;
  --color-bg-elevated: #1a1a2e;
  --color-surface: rgba(255, 255, 255, 0.03);
  --color-surface-hover: rgba(255, 255, 255, 0.06);
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(255, 255, 255, 0.15);

  /* Accent Colors */
  --color-accent-blue: #3b82f6;
  --color-accent-purple: #8b5cf6;
  --color-accent-cyan: #06b6d4;
  --color-accent-pink: #ec4899;
  --color-accent-green: #10b981;

  /* Text Colors */
  --color-text-primary: #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #3b82f6, #8b5cf6);
  --gradient-hero: linear-gradient(135deg, #3b82f6, #8b5cf6, #06b6d4);
  --gradient-easyartbook: linear-gradient(135deg, #ec4899, #8b5cf6);
  --gradient-linescheduling: linear-gradient(135deg, #3b82f6, #10b981);
  --gradient-myledger: linear-gradient(135deg, #0d9488, #06b6d4);

  /* Typography Scale (fluid) */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.6vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.2rem + 1.5vw, 2rem);
  --text-3xl: clamp(2rem, 1.5rem + 2.5vw, 3rem);
  --text-4xl: clamp(2.5rem, 1.8rem + 3.5vw, 4rem);
  --text-5xl: clamp(3rem, 2rem + 5vw, 5rem);

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 999px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow-blue: 0 0 30px rgba(59, 130, 246, 0.2);
  --shadow-glow-purple: 0 0 30px rgba(139, 92, 246, 0.2);
}