/* ===========================================
   UC IT Service - CSS Custom Properties
   Alle Farben, Fonts, Spacing an EINER Stelle
   =========================================== */

:root {
  /* Farben - Hauptpalette */
  --color-primary: #1a1a1a;        /* Schwarz - Header, Footer */
  --color-primary-light: #2d2d2d;  /* Hover-Zustand */
  --color-accent: #c41e2a;         /* Rot - CTAs, Links, Highlights (WCAG AA) */
  --color-accent-hover: #a11920;
  --color-blue: #2d3748;           /* Anthrazit - Hero, CTA Section */
  --color-blue-light: #4a5568;
  --color-highlight: #c41e2a;      /* Rot - Announcement Banner */
  
  /* Neutrals */
  --color-white: #ffffff;
  --color-gray-50: #f8f9fa;
  --color-gray-100: #f1f3f5;
  --color-gray-200: #e9ecef;
  --color-gray-400: #adb5bd;
  --color-gray-600: #545b62;
  --color-gray-800: #343a40;
  --color-gray-900: #212529;
  
  /* Semantische Farben */
  --color-text: var(--color-gray-800);
  --color-text-muted: var(--color-gray-600);
  --color-heading: var(--color-gray-900);
  --color-link: var(--color-primary);
  --color-link-hover: var(--color-accent);
  --color-background: var(--color-white);
  --color-background-alt: var(--color-gray-50);
  
  /* Typography */
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;
  
  --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;
  
  --line-height-tight: 1.25;
  --line-height-normal: 1.6;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  
  /* Layout */
  --container-max: 1280px;
  --container-padding: var(--space-4);
  
  /* Borders & Shadows */
  --border-radius: 4px;
  --border-radius-lg: 8px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

@media (min-width: 768px) {
  :root {
    --container-padding: var(--space-6);
  }
}