/**
 * Nexus 26 - CSS Variables (Design Tokens)
 * International Clean Design System
 */

:root {
   /* ============================================
       COLOR PALETTE
       No pure black (#000) - use charcoal instead
       ============================================ */

   /* Text Colors */
   --text-primary: #111827;
   --text-secondary: #4B5563;
   --text-tertiary: #6B7280;
   --text-muted: #9CA3AF;
   --text-light: #D1D5DB;
   --text-inverse: #FFFFFF;

   /* Background Colors */
   --bg-primary: #FFFFFF;
   --bg-secondary: #F9FAFB;
   --bg-tertiary: #F3F4F6;
   --bg-elevated: #FFFFFF;
   --bg-overlay: rgba(17, 24, 39, 0.5);

   /* Brand Colors */
   --accent: #005BEA;
   --accent-gradient: linear-gradient(135deg, #005BEA 0%, #00C6FB 100%);
   --accent-hover: #004E92;
   --accent-light: #E0F2FE;
   --accent-dark: #004E92;

   /* Status Colors - Pill Style */
   --status-new-bg: #DBEAFE;
   --status-new-text: #1E40AF;

   --status-contacted-bg: #E0E7FF;
   --status-contacted-text: #3730A3;

   --status-ready-bg: #FEF3C7;
   --status-ready-text: #92400E;

   --status-closed-bg: #D1FAE5;
   --status-closed-text: #065F46;

   --status-archived-bg: #F3F4F6;
   --status-archived-text: #4B5563;

   --status-cancelled-bg: #FEE2E2;
   --status-cancelled-text: #991B1B;

   --status-pending-bg: #FEF3C7;
   --status-pending-text: #92400E;

   --status-most-important-bg: #F3E8FF;
   --status-most-important-text: #7E22CE;

   /* Semantic Colors */
   --success: #10B981;
   --success-light: #D1FAE5;
   --success-dark: #059669;

   --warning: #F59E0B;
   --warning-light: #FEF3C7;
   --warning-dark: #D97706;

   --error: #EF4444;
   --error-light: #FEE2E2;
   --error-dark: #DC2626;

   --info: #3B82F6;
   --info-light: #DBEAFE;
   --info-dark: #2563EB;

   /* Border Colors */
   --border-light: #F5F6F7;
   --border-default: #ECEEF0;
   --border-dark: #D1D5DB;

   /* ============================================
       SPACING (8px Base Unit)
       ============================================ */
   --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;
   --space-16: 64px;
   --space-20: 80px;

   /* ============================================
       TYPOGRAPHY
       ============================================ */
   --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
   --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

   /* Font Sizes */
   --text-xs: 0.75rem;
   /* 12px */
   --text-sm: 0.875rem;
   /* 14px */
   --text-base: 1rem;
   /* 16px */
   --text-lg: 1.125rem;
   /* 18px */
   --text-xl: 1.25rem;
   /* 20px */
   --text-2xl: 1.5rem;
   /* 24px */
   --text-3xl: 1.875rem;
   /* 30px */
   --text-4xl: 2.25rem;
   /* 36px */

   /* Font Weights */
   --font-light: 300;
   --font-normal: 400;
   --font-medium: 500;
   --font-semibold: 600;
   --font-bold: 700;

   /* Line Heights */
   --leading-none: 1;
   --leading-tight: 1.25;
   --leading-snug: 1.375;
   --leading-normal: 1.5;
   --leading-relaxed: 1.625;

   /* ============================================
       SHADOWS (Soft, no harsh borders)
       ============================================ */
   --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.03);
   --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
   --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.06);
   --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.08);
   --shadow-xl: 0 8px 30px rgba(0, 0, 0, 0.08);
   --shadow-2xl: 0 16px 40px rgba(0, 0, 0, 0.12);
   --shadow-inner: inset 0 1px 3px rgba(0, 0, 0, 0.04);

   /* Colored Shadows */
   --shadow-accent: 0 2px 10px rgba(99, 102, 241, 0.2);
   --shadow-success: 0 2px 10px rgba(16, 185, 129, 0.2);
   --shadow-error: 0 2px 10px rgba(239, 68, 68, 0.2);

   /* ============================================
       BORDER RADIUS
       ============================================ */
   --radius-sm: 6px;
   --radius-md: 8px;
   --radius-lg: 12px;
   --radius-xl: 16px;
   --radius-2xl: 24px;
   --radius-full: 9999px;

   /* ============================================
       TRANSITIONS
       ============================================ */
   --transition-fast: 150ms ease;
   --transition-base: 200ms ease;
   --transition-slow: 300ms ease;
   --transition-slower: 500ms ease;

   /* ============================================
       Z-INDEX SCALE
       ============================================ */
   --z-dropdown: 1000;
   --z-sticky: 1100;
   --z-fixed: 1200;
   --z-modal-backdrop: 1300;
   --z-modal: 1400;
   --z-popover: 1500;
   --z-tooltip: 1600;
   --z-toast: 1700;

   /* ============================================
       LAYOUT
       ============================================ */
   --sidebar-width: 260px;
   --sidebar-collapsed: 72px;
   --header-height: 64px;
   --content-max-width: 1400px;

   /* ============================================
       GLASSMORPHISM
       ============================================ */
   --glass-bg: rgba(255, 255, 255, 0.65);
   --glass-bg-dark: rgba(255, 255, 255, 0.08);
   --glass-border: rgba(255, 255, 255, 0.15);
   --glass-blur: blur(16px);
   --glass-blur-heavy: blur(24px);
}

/* Dark Mode Variables */
@media (prefers-color-scheme: dark) {
   :root.auto-dark {
      --text-primary: #F9FAFB;
      --text-secondary: #D1D5DB;
      --text-tertiary: #9CA3AF;
      --text-muted: #6B7280;

      --bg-primary: #111827;
      --bg-secondary: #1F2937;
      --bg-tertiary: #374151;
      --bg-elevated: #1F2937;

      --border-light: #374151;
      --border-default: #4B5563;
      --border-dark: #6B7280;

      --glass-bg: rgba(31, 41, 55, 0.7);
   }
}