/* ======================
   CSS VARIABLES
   Design System Tokens
   ====================== */

:root {
  /* === COLORS === */
  --color-bg: #FAFAFA;
  --color-text: #1A1A1A;
  --color-text-secondary: #4A4A4A;
  --color-accent: #0A4D68;
  --color-accent-light: #1A5F7A;
  --color-border: #E0E0E0;
  --color-white: #FFFFFF;
  
  /* === TYPOGRAPHY === */
  --font-body: 'DM Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --font-size-base: 17px;
  --line-height-base: 1.7;
  
  /* === SPACING (échelle 8px) === */
  --spacing-xs: 0.5rem;   /* 8px */
  --spacing-sm: 1rem;     /* 16px */
  --spacing-md: 2rem;     /* 32px */
  --spacing-lg: 4rem;     /* 64px */
  --spacing-xl: 6rem;     /* 96px */
  --spacing-xxl: 8rem;    /* 128px */
  
  /* === LAYOUT === */
  --max-width-narrow: 900px;
  --max-width-wide: 1200px;
  
  /* === BREAKPOINTS (pour référence) === */
  /* Utilisés dans media queries, pas directement en CSS */
  /* Mobile: 640px */
  /* Tablet: 768px */
  /* Desktop: 1024px */
  /* Wide: 1280px */
  
  /* === TRANSITIONS === */
  --transition-fast: 150ms;
  --transition-base: 250ms;
  --transition-slow: 400ms;
  --transition-timing: ease;
  
  /* === BORDERS === */
  --border-radius: 0;        /* Pas d'arrondi pour style épuré */
  --border-width: 1px;
  --border-width-thick: 2px;
  --border-width-thicker: 3px;
  --border-width-thickest: 4px;
  
  /* === SHADOWS (optionnel, minimal) === */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 20px rgba(0, 0, 0, 0.12);
  
  /* === Z-INDEX (pour référence) === */
  /* header: 100 */
  /* modal: 1000 */
  /* tooltip: 2000 */
}