/* ============================================================
   DESIGN TOKENS EMB — Camada base (primitivos)
   Importar ANTES de qualquer paleta semântica
   ============================================================ */

:root {
  /* ---------- ESPAÇAMENTO (4/8pt grid) ---------- */
  --space-0: 0;
  --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 */
  --space-32: 8rem;     /* 128px */

  /* ---------- TIPOGRAFIA (escala 1.25 — major third) ---------- */
  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-serif: "Fraunces", "Playfair Display", Georgia, serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --font-display: var(--font-sans);

  --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 */
  --text-7xl:  4.5rem;    /* 72px */
  --text-8xl:  6rem;      /* 96px */

  --leading-tight:   1.15;
  --leading-snug:    1.3;
  --leading-normal:  1.5;
  --leading-relaxed: 1.65;
  --leading-loose:   1.85;

  --tracking-tighter: -0.04em;
  --tracking-tight:   -0.02em;
  --tracking-normal:  0;
  --tracking-wide:    0.025em;
  --tracking-wider:   0.05em;
  --tracking-widest:  0.12em;

  --weight-regular:  400;
  --weight-medium:   500;
  --weight-semibold: 600;
  --weight-bold:     700;
  --weight-black:    900;

  /* ---------- MEASURE (largura ideal de leitura) ---------- */
  --measure-narrow:  45ch;
  --measure-base:    65ch;
  --measure-wide:    80ch;

  /* ---------- RADIUS ---------- */
  --radius-none: 0;
  --radius-sm:   0.25rem;  /* 4px  */
  --radius-md:   0.5rem;   /* 8px  */
  --radius-lg:   0.75rem;  /* 12px */
  --radius-xl:   1rem;     /* 16px */
  --radius-2xl:  1.5rem;   /* 24px */
  --radius-full: 9999px;

  /* ---------- SHADOW (4 níveis + ring + glow) ---------- */
  --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.04);
  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.08), 0 1px 2px -1px rgb(0 0 0 / 0.06);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.08), 0 2px 4px -2px rgb(0 0 0 / 0.06);
  --shadow-lg: 0 10px 20px -3px rgb(0 0 0 / 0.10), 0 4px 8px -4px rgb(0 0 0 / 0.08);
  --shadow-xl: 0 24px 48px -12px rgb(0 0 0 / 0.18);
  --shadow-2xl: 0 50px 100px -20px rgb(0 0 0 / 0.25);
  --shadow-ring: 0 0 0 3px rgb(120 120 255 / 0.35);
  --shadow-glow: 0 0 40px -8px var(--brand-500, oklch(70% 0.18 30));

  /* ---------- MOTION (easings + durations) ---------- */
  --ease-linear:  linear;
  --ease-out:     cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:      cubic-bezier(0.7, 0, 0.84, 0);
  --ease-in-out:  cubic-bezier(0.65, 0, 0.35, 1);
  --ease-spring:  cubic-bezier(0.34, 1.56, 0.64, 1);

  --dur-instant: 80ms;
  --dur-fast:    160ms;
  --dur-base:    240ms;
  --dur-slow:    400ms;
  --dur-slower:  640ms;

  /* ---------- Z-INDEX (camadas) ---------- */
  --z-base:     0;
  --z-raised:   10;
  --z-dropdown: 100;
  --z-sticky:   200;
  --z-overlay:  300;
  --z-modal:    400;
  --z-toast:    500;
  --z-tooltip:  600;

  /* ---------- BREAKPOINTS (referência — Tailwind aplica) ---------- */
  --bp-sm: 640px;
  --bp-md: 768px;
  --bp-lg: 1024px;
  --bp-xl: 1280px;
  --bp-2xl: 1536px;

  /* ---------- CONTAINER WIDTHS ---------- */
  --container-prose: 65ch;
  --container-sm:    640px;
  --container-md:    768px;
  --container-lg:    1024px;
  --container-xl:    1200px;
  --container-2xl:   1400px;
}

/* Reset mínimo coerente com tokens */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body { margin: 0; font-family: var(--font-sans); line-height: var(--leading-normal); -webkit-font-smoothing: antialiased; }
img, svg, video { display: block; max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }