/* ==========================================================================
   Truwic IT Solution - Design System Tokens (variables.css)
   Centralized CSS Custom Properties for Brand, Typography, Layout & Themes
   ========================================================================== */

:root {
  /* Brand Color Palette */
  --primary-navy-dark: #0f172a;
  --primary-navy-main: #1e293b;
  --primary-navy-light: #334155;

  --tech-blue-main: #2563eb;
  --tech-blue-hover: #1d4ed8;
  --tech-blue-light: #eff6ff;

  --brand-red-main: #2563eb;
  --brand-red-hover: #1d4ed8;
  --brand-red-light: #eff6ff;
  --brand-red-dark: #1e40af;

  --brand-blue-main: #2563eb;
  --brand-blue-hover: #1d4ed8;
  --brand-blue-light: #eff6ff;
  --brand-blue-dark: #1e40af;

  --accent-amber-main: #d97706;
  --accent-amber-hover: #b45309;
  --accent-amber-light: #fffbeb;

  /* Neutral Surface & Background Colors */
  --bg-main: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-alt: #f1f5f9;
  --bg-surface-hover: #f8fafc;
  --bg-dark-surface: #0f172a;

  /* Text Colors */
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --text-inverse: #ffffff;
  --text-brand: #2563eb;

  /* Border & Divider Colors */
  --border-light: #e2e8f0;
  --border-medium: #cbd5e1;
  --border-dark: #94a3b8;
  --border-focus: #2563eb;

  /* Semantic Feedback Colors */
  --color-success: #059669;
  --color-success-bg: #ecfdf5;
  --color-success-border: #a7f3d0;
  --color-warning: #d97706;
  --color-warning-bg: #fffbeb;
  --color-warning-border: #fde68a;
  --color-danger: #dc2626;
  --color-danger-bg: #fef2f2;
  --color-danger-border: #fecaca;
  --color-info: #2563eb;
  --color-info-bg: #eff6ff;
  --color-info-border: #bfdbfe;

  /* Typography Scale - Fluid Responsive with clamp() */
  --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-family-heading: 'Outfit', 'Inter', -apple-system, sans-serif;

  --font-size-xs: clamp(0.7rem, 0.65rem + 0.25vw, 0.75rem);    /* 11px - 12px */
  --font-size-sm: clamp(0.8125rem, 0.77rem + 0.2vw, 0.875rem); /* 13px - 14px */
  --font-size-base: clamp(0.9375rem, 0.9rem + 0.2vw, 1rem);    /* 15px - 16px */
  --font-size-lg: clamp(1.05rem, 0.98rem + 0.35vw, 1.125rem);  /* 16.8px - 18px */
  --font-size-xl: clamp(1.15rem, 1.05rem + 0.5vw, 1.25rem);    /* 18.4px - 20px */
  --font-size-2xl: clamp(1.35rem, 1.2rem + 0.75vw, 1.5rem);    /* 21.6px - 24px */
  --font-size-3xl: clamp(1.55rem, 1.35rem + 1vw, 1.875rem);    /* 24.8px - 30px */
  --font-size-4xl: clamp(1.85rem, 1.55rem + 1.5vw, 2.25rem);   /* 29.6px - 36px */

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

  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;

  /* Spacing Scale (8pt Grid) */
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.25rem;  /* 20px */
  --space-6: 1.5rem;   /* 24px */
  --space-8: 2rem;     /* 32px */
  --space-10: 2.5rem;  /* 40px */
  --space-12: 3rem;    /* 48px */
  --space-16: 4rem;    /* 64px */

  /* Border Radii */
  --radius-xs: 0.125rem; /* 2px */
  --radius-sm: 0.25rem;  /* 4px */
  --radius-md: 0.375rem; /* 6px */
  --radius-lg: 0.5rem;   /* 8px */
  --radius-xl: 0.75rem;  /* 12px */
  --radius-2xl: 1rem;    /* 16px */
  --radius-full: 9999px;

  /* Elevation Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.06), 0 1px 2px 0 rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.03);
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
  --shadow-focus: 0 0 0 3px rgba(37, 99, 235, 0.25);

  /* Container & Layout Defaults */
  --container-max-width: 1400px;
  --header-height: 72px;
  --topbar-height: 36px;
  --nav-height: 48px;

  /* Touch Target Dimensions */
  --touch-target-min: 44px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
}