/* =============================================================================
   DESIGN TOKENS - NIVEAU 1: TOKENS GLOBAUX (PRIMITIVES)
   Valeurs de base primitives partagées par tous les styles
   ============================================================================= */

:root {
  /* --- COULEURS NEUTRES --- */
  --color-neutral-0: #ffffff;
  --color-neutral-50: #f9f9f9;
  --color-neutral-100: #f3f3f3;
  --color-neutral-200: #e8e8e8;
  --color-neutral-300: #d9d9d9;
  --color-neutral-400: #a0a0a0;
  --color-neutral-500: #707070;
  --color-neutral-600: #505050;
  --color-neutral-700: #353535;
  --color-neutral-800: #1a1a1a;
  --color-neutral-900: #000000;

  /* --- COULEURS PRIMAIRES (palette diverse) --- */
  --color-blue-50: #eff6ff;
  --color-blue-100: #e0f2fe;
  --color-blue-500: #0ea5e9;
  --color-blue-700: #0369a1;
  --color-blue-900: #082f49;

  --color-amber-50: #fffbeb;
  --color-amber-100: #fef3c7;
  --color-amber-500: #f59e0b;
  --color-amber-700: #b45309;
  --color-amber-900: #78350f;

  --color-rose-50: #fff1f2;
  --color-rose-100: #ffe4e6;
  --color-rose-500: #f43f5e;
  --color-rose-700: #be185d;
  --color-rose-900: #831843;

  --color-emerald-50: #f0fdf4;
  --color-emerald-100: #dcfce7;
  --color-emerald-500: #10b981;
  --color-emerald-700: #047857;
  --color-emerald-900: #064e3b;

  --color-purple-50: #faf5ff;
  --color-purple-100: #f3e8ff;
  --color-purple-500: #a855f7;
  --color-purple-700: #7e22ce;
  --color-purple-900: #581c87;

  --color-indigo-50: #eef2ff;
  --color-indigo-100: #e0e7ff;
  --color-indigo-500: #6366f1;
  --color-indigo-700: #4f46e5;
  --color-indigo-900: #312e81;

  --color-slate-50: #f8fafc;
  --color-slate-100: #f1f5f9;
  --color-slate-500: #64748b;
  --color-slate-700: #334155;
  --color-slate-900: #0f172a;

  --color-red-50: #fef2f2;
  --color-red-100: #fee2e2;
  --color-red-500: #ef4444;
  --color-red-700: #b91c1c;
  --color-red-900: #7f1d1d;

  --color-yellow-50: #fefce8;
  --color-yellow-100: #fef08a;
  --color-yellow-500: #eab308;
  --color-yellow-700: #ca8a04;
  --color-yellow-900: #713f12;

  --color-cyan-50: #ecf8ff;
  --color-cyan-100: #cffafe;
  --color-cyan-500: #06b6d4;
  --color-cyan-700: #0891b2;
  --color-cyan-900: #164e63;

  /* --- TYPOGRAPHIE --- */
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 32px;
  --font-size-4xl: 40px;
  --font-size-5xl: 48px;

  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  --line-height-loose: 2;

  /* --- FONT STACKS MODERNES (modernfontstacks.com) --- */
  --font-system-ui: system-ui, sans-serif;
  --font-transitional: Charter, 'Bitstream Charter', 'Sitka Text', Cambria, serif;
  --font-old-style: 'Iowan Old Style', 'Palatino Linotype', 'URW Palladio L', P052, serif;
  --font-humanist: Seravek, 'Gill Sans Nova', Ubuntu, Calibri, 'DejaVu Sans', source-sans-pro, sans-serif;
  --font-geometric-humanist: Avenir, Montserrat, Corbel, 'URW Gothic', source-sans-pro, sans-serif;
  --font-classical-humanist: Optima, Candara, 'Noto Sans', source-sans-pro, sans-serif;
  --font-neo-grotesque: Inter, Roboto, 'Helvetica Neue', 'Arial Nova', 'Nimbus Sans', Arial, sans-serif;
  --font-monospace-slab: 'Nimbus Mono PS', 'Courier New', monospace;
  --font-monospace-code: ui-monospace, 'Cascadia Code', 'Source Code Pro', Menlo, Consolas, 'DejaVu Sans Mono', monospace;
  --font-industrial: Bahnschrift, 'DIN Alternate', 'Franklin Gothic Medium', 'Nimbus Sans Narrow', sans-serif-condensed, sans-serif;
  --font-rounded-sans: ui-rounded, 'Hiragino Maru Gothic ProN', Quicksand, Comfortaa, Manjari, 'Arial Rounded MT', 'Arial Rounded MT Bold', Calibri, source-sans-pro, sans-serif;
  --font-slab-serif: Rockwell, 'Rockwell Nova', 'Roboto Slab', 'DejaVu Serif', 'Sitka Small', serif;
  --font-antique: Superclarendon, 'Bookman Old Style', 'URW Bookman', 'URW Bookman L', 'Georgia Pro', Georgia, serif;
  --font-didone: Didot, 'Bodoni MT', 'Noto Serif Display', 'URW Palladio L', P052, Sylfaen, serif;
  --font-handwritten: 'Segoe Print', 'Bradley Hand', Chilanka, TSCu_Comic, casual, cursive;

  /* --- ESPACEMENT --- */
  --spacing-0: 0;
  --spacing-2: 2px;
  --spacing-4: 4px;
  --spacing-8: 8px;
  --spacing-12: 12px;
  --spacing-16: 16px;
  --spacing-20: 20px;
  --spacing-24: 24px;
  --spacing-32: 32px;
  --spacing-40: 40px;
  --spacing-48: 48px;
  --spacing-64: 64px;

  /* --- BORDER RADIUS --- */
  --border-radius-none: 0;
  --border-radius-sm: 2px;
  --border-radius-md: 4px;
  --border-radius-lg: 8px;
  --border-radius-xl: 12px;
  --border-radius-2xl: 16px;
  --border-radius-full: 9999px;

  /* --- OMBRES --- */
  --shadow-none: none;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);

  /* --- OPACITÉ --- */
  --opacity-0: 0;
  --opacity-10: 0.1;
  --opacity-20: 0.2;
  --opacity-30: 0.3;
  --opacity-40: 0.4;
  --opacity-50: 0.5;
  --opacity-60: 0.6;
  --opacity-70: 0.7;
  --opacity-80: 0.8;
  --opacity-90: 0.9;
  --opacity-100: 1;

  /* --- TRANSITIONS --- */
  --transition-fast: 150ms;
  --transition-base: 200ms;
  --transition-slow: 300ms;
  --timing-function-ease: ease;
  --timing-function-ease-in: ease-in;
  --timing-function-ease-out: ease-out;
  --timing-function-ease-in-out: ease-in-out;

  /* --- Z-INDEX --- */
  --z-index-hide: -1;
  --z-index-auto: auto;
  --z-index-base: 0;
  --z-index-dropdown: 1000;
  --z-index-sticky: 1020;
  --z-index-fixed: 1030;
  --z-index-modal-backdrop: 1040;
  --z-index-modal: 1050;
  --z-index-popover: 1060;
  --z-index-tooltip: 1070;
}