:root {
  /* Superfícies */
  --color-bg: #FAFBFC;
  --color-surface: #FFFFFF;
  --color-surface-alt: #F1F4F7;
  --color-border: #D9E0E6;
  --color-border-strong: #B7C2CC;

  /* Texto */
  --color-text: #16232E;
  --color-text-muted: #5A6B78;
  --color-text-subtle: #8895A1;

  /* Marca */
  --color-primary: #0F4C5C;
  --color-primary-hover: #0B3A47;
  --color-primary-soft: #E5EEF1;
  --color-accent: #2A9D8F;
  --color-accent-soft: #E5F4F2;

  /* Semânticas */
  --color-success: #1E7A3D;
  --color-success-soft: #E4F3EA;
  --color-warning: #9A6B00;
  --color-warning-soft: #FBF2DC;
  --color-danger: #A32626;
  --color-danger-soft: #F8E4E4;
  --color-info: #1B4965;
  --color-info-soft: #E3ECF2;

  /* Tipografia */
  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-serif: 'Source Serif 4', Georgia, serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;

  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: 1.125rem;
  --fs-lg: 1.375rem;
  --fs-xl: 1.75rem;
  --fs-2xl: 2.25rem;
  --fs-3xl: 3rem;

  --lh-tight: 1.2;
  --lh-snug: 1.35;
  --lh-normal: 1.5;
  --lh-relaxed: 1.65;

  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;

  /* Espaçamento */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;

  /* Raios */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Sombras */
  --shadow-sm: 0 1px 2px rgba(15, 30, 45, 0.06);
  --shadow-md: 0 2px 6px rgba(15, 30, 45, 0.08);
  --shadow-lg: 0 8px 24px rgba(15, 30, 45, 0.10);

  /* Transições */
  --transition-fast: 120ms ease;
  --transition-base: 200ms ease;

  /* Layout */
  --container-max: 1200px;
  --container-narrow: 720px;
  --header-height: 64px;
}