/* ==========================================================================
   ECM IT-Consulting - Design Tokens & Custom Properties
   ========================================================================== */

:root {
  /* Brand & Corporate Palette */
  --color-primary: #0F172A;        /* Dunkelblau / Slate 900 */
  --color-primary-light: #1E293B;  /* Slate 800 */
  --color-primary-dark: #020617;   /* Slate 950 */
  
  --color-secondary: #2563EB;      /* Blau / Blue 600 */
  --color-secondary-hover: #1D4ED8;/* Blue 700 */
  --color-secondary-light: #EFF6FF;/* Blue 50 */
  --color-secondary-border: #BFDBFE;/* Blue 200 */

  --color-accent: #0891B2;         /* Cyan / Cyan 600 */
  --color-accent-hover: #0E7490;   /* Cyan 700 */
  --color-accent-light: #ECFEFF;   /* Cyan 50 */

  /* Neutral Backgrounds */
  --color-bg-light: #F8FAFC;       /* Hellgrau / Slate 50 */
  --color-bg-white: #FFFFFF;
  --color-bg-subtle: #F1F5F9;      /* Slate 100 */
  --color-bg-muted: #E2E8F0;       /* Slate 200 */

  /* Text Colors */
  --color-text-primary: #0F172A;   /* Primary body & headlines */
  --color-text-secondary: #475569; /* Slate 600 */
  --color-text-muted: #64748B;     /* Slate 500 */
  --color-text-inverse: #FFFFFF;
  --color-text-inverse-muted: #94A3B8; /* Slate 400 */

  /* Borders & Dividers */
  --color-border: #E2E8F0;
  --color-border-subtle: #CBD5E1;
  --color-border-focus: #2563EB;

  /* Status Colors */
  --color-success: #15803D;        /* Green 700 */
  --color-success-bg: #F0FDF4;
  --color-warning: #B45309;        /* Amber 700 */
  --color-warning-bg: #FFFBEB;
  --color-error: #B91C1C;          /* Red 700 */
  --color-error-bg: #FEF2F2;

  /* Typography */
  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Font Sizes (Scale factor 1.25) */
  --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 */
  --text-5xl: 3rem;      /* 48px */
  --text-6xl: 3.75rem;   /* 60px */

  /* Spacing Grid (8pt rhythm) */
  --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 */
  --space-20: 5rem;    /* 80px */
  --space-24: 6rem;    /* 96px */

  /* Radii */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Elevation / Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.05);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 300ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout Widths */
  --container-max: 1200px;
  --container-narrow: 840px;
  --header-height: 80px;

  /* Accessibility Focus */
  --focus-ring: 3px solid #2563EB;
  --focus-offset: 2px;
}