/* =========================================================
   OnYvon — Design Tokens
   Palette, typographie, espaces, radius, ombres, motion
   ========================================================= */

:root {
  /* ——— Couleurs — Base ——— */
  --c-black: #0A0A0B;
  --c-surface-1: #111114;
  --c-surface-2: #17171B;
  --c-surface-3: #1D1D22;
  --c-border: rgba(255, 255, 255, 0.08);
  --c-border-strong: rgba(255, 255, 255, 0.16);

  /* ——— Texte ——— */
  --c-text: #F5F5F7;
  --c-text-dim: #C4C4CC;
  --c-text-mute: #8C8C96;
  --c-text-faint: #5A5A63;

  /* ——— Or OnYvon (signature) ——— */
  --c-gold: #F5C451;
  --c-gold-bright: #FFD878;
  --c-gold-deep: #C89A2E;

  /* ——— IA (accents discrets) ——— */
  --c-violet: #7C5CFF;
  --c-cyan: #22D3EE;

  /* ——— États fonctionnels ——— */
  --c-success: #34D399;
  --c-danger: #F87171;
  --c-warning: #F5C451;

  /* ——— Dégradés ——— */
  --grad-gold: linear-gradient(135deg, #FFD878 0%, #F5C451 45%, #C89A2E 100%);
  --grad-ai: linear-gradient(135deg, #7C5CFF 0%, #22D3EE 100%);
  --grad-hero: radial-gradient(ellipse at 20% 0%, rgba(124, 92, 255, 0.12), transparent 55%),
               radial-gradient(ellipse at 90% 10%, rgba(245, 196, 81, 0.10), transparent 55%),
               radial-gradient(ellipse at 50% 110%, rgba(34, 211, 238, 0.06), transparent 60%);
  --grad-panel: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0));

  /* ——— Typographie ——— */
  --font-display: "Space Grotesk", "Inter", ui-sans-serif, system-ui, sans-serif;
  --font-body: "Inter", ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --font-serif: "Instrument Serif", "Iowan Old Style", Georgia, serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Échelle typographique (fluide) */
  --fs-xs: clamp(0.75rem, 0.73rem + 0.1vw, 0.8rem);
  --fs-sm: clamp(0.875rem, 0.84rem + 0.15vw, 0.95rem);
  --fs-base: clamp(1rem, 0.95rem + 0.2vw, 1.0625rem);
  --fs-lg: clamp(1.125rem, 1.08rem + 0.25vw, 1.25rem);
  --fs-xl: clamp(1.35rem, 1.25rem + 0.5vw, 1.625rem);
  --fs-2xl: clamp(1.75rem, 1.5rem + 1vw, 2.25rem);
  --fs-3xl: clamp(2.25rem, 1.9rem + 1.6vw, 3.25rem);
  --fs-4xl: clamp(2.85rem, 2.3rem + 2.5vw, 4.5rem);
  --fs-5xl: clamp(3.5rem, 2.8rem + 3.5vw, 6rem);

  /* Line-heights */
  --lh-tight: 1.08;
  --lh-snug: 1.25;
  --lh-normal: 1.55;
  --lh-loose: 1.75;

  /* Letter-spacing */
  --ls-tight: -0.02em;
  --ls-tighter: -0.035em;
  --ls-wide: 0.04em;
  --ls-wider: 0.12em;

  /* ——— Espaces (grille 8pt) ——— */
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 20px;
  --s-6: 24px;
  --s-8: 32px;
  --s-10: 40px;
  --s-12: 48px;
  --s-16: 64px;
  --s-20: 80px;
  --s-24: 96px;
  --s-32: 128px;
  --s-40: 160px;

  /* ——— Radius ——— */
  --r-xs: 6px;
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 28px;
  --r-2xl: 36px;
  --r-full: 9999px;

  /* ——— Ombres ——— */
  --sh-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --sh-md: 0 8px 24px rgba(0, 0, 0, 0.35), 0 2px 4px rgba(0, 0, 0, 0.25);
  --sh-lg: 0 20px 60px rgba(0, 0, 0, 0.5), 0 4px 12px rgba(0, 0, 0, 0.3);
  --sh-gold: 0 10px 40px -10px rgba(245, 196, 81, 0.35);
  --sh-ai: 0 10px 40px -10px rgba(124, 92, 255, 0.4);
  --sh-ring-gold: 0 0 0 1px rgba(245, 196, 81, 0.35), 0 0 0 4px rgba(245, 196, 81, 0.12);

  /* ——— Motion ——— */
  --dur-fast: 150ms;
  --dur-base: 240ms;
  --dur-slow: 420ms;
  --dur-xslow: 700ms;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  /* ——— Layout ——— */
  --container: 1240px;
  --container-narrow: 920px;
  --header-h: 72px;
  --z-nav: 100;
  --z-overlay: 900;
  --z-modal: 1000;
}