/* ============================================
   CSS Variables — Design Tokens
   Premium SaaS Design System
   ============================================ */

:root {
  /* ---- Primary Brand Colors ---- */
  --color-primary: #6366f1;
  --color-primary-hover: #4f46e5;
  --color-primary-dark: #4338ca;
  --color-primary-light: #eef2ff;
  --color-primary-50: #eef2ff;
  --color-primary-100: #e0e7ff;
  --color-primary-200: #c7d2fe;
  --color-primary-400: #818cf8;
  --color-primary-500: #6366f1;
  --color-primary-600: #4f46e5;
  --color-primary-700: #4338ca;
  --color-primary-800: #3730a3;
  --color-primary-900: #312e81;

  /* ---- Accent / Secondary ---- */
  --color-accent: #06b6d4;
  --color-accent-light: #ecfeff;
  --color-accent-400: #22d3ee;
  --color-accent-500: #06b6d4;

  /* ---- Vivid Gradient Stops ---- */
  --gradient-start: #6366f1;
  --gradient-mid: #8b5cf6;
  --gradient-end: #06b6d4;
  --gradient-primary: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-mid) 50%, var(--gradient-end) 100%);
  --gradient-primary-subtle: linear-gradient(135deg, rgba(99,102,241,0.08) 0%, rgba(139,92,246,0.06) 50%, rgba(6,182,212,0.04) 100%);

  /* ---- Success / Warning / Error ---- */
  --color-success: #10b981;
  --color-success-light: #d1fae5;
  --color-warning: #f59e0b;
  --color-warning-light: #fef3c7;
  --color-error: #ef4444;
  --color-error-light: #fee2e2;

  /* ---- Backgrounds ---- */
  --color-background: #ffffff;
  --color-surface: #f8fafc;
  --color-surface-alt: #f1f5f9;
  --color-surface-dark: #0f172a;
  --color-surface-dark-2: #1e293b;

  /* ---- Text ---- */
  --color-text: #0f172a;
  --color-text-secondary: #334155;
  --color-text-muted: #64748b;
  --color-text-light: #94a3b8;
  --color-text-on-primary: #ffffff;
  --color-text-on-dark: #e2e8f0;
  --color-text-on-dark-muted: #94a3b8;

  /* ---- Borders ---- */
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;
  --color-border-dark: #cbd5e1;

  /* ---- Glass ---- */
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-bg-light: rgba(255, 255, 255, 0.7);
  --glass-border-light: rgba(255, 255, 255, 0.5);

  /* ---- Shadows ---- */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.15);
  --shadow-glow-lg: 0 0 80px rgba(99, 102, 241, 0.2);
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-card-hover: 0 20px 40px -12px rgba(99, 102, 241, 0.15), 0 8px 16px -8px rgba(0, 0, 0, 0.06);

  /* ---- Typography ---- */
  --font-family: 'IBM Plex Sans Arabic', 'Segoe UI', Tahoma, Arial, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;
  --font-size-7xl: 4.5rem;

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-tight: 1.2;
  --line-height-snug: 1.35;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.8;

  /* ---- Spacing ---- */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* ---- Border Radius ---- */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.25rem;
  --radius-3xl: 1.5rem;
  --radius-full: 9999px;

  /* ---- Transitions ---- */
  --transition-fast: 150ms ease;
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* ---- Container ---- */
  --container-max: 1200px;
  --container-narrow: 800px;
  --container-wide: 1400px;
  --container-padding: 1.5rem;

  /* ---- Navbar ---- */
  --navbar-height: 72px;
}