:root {
  /* Colors */
  --color-black:   #1A1A19;
  --color-gray:    #4E4E4E;
  --color-gray-light: #7A7A7A;
  --color-gray-subtle: #242423;
  --color-yellow:  #FCBC06;
  --color-yellow-dark: #D9A005;
  --color-white:   #FFFFFF;
  --color-off-white: #F5F5F4;
  --color-surface:    #ECEAE8;   /* cinza claro quente — seções claras alternadas */
  --color-surface-alt: #F4F2F0;  /* variante mais clara */

  /* Typography */
  --font-title:  'Montserrat', sans-serif;
  --font-body:   'Poppins', sans-serif;
  --font-accent: 'Oswald', sans-serif;

  --fw-regular:    400;
  --fw-medium:     500;
  --fw-semibold:   600;
  --fw-bold:       700;
  --fw-extrabold:  800;

  /* Fluid type scale (clamp: min | preferred | max) */
  --text-xs:   clamp(0.75rem,  1.5vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 1.8vw, 1rem);
  --text-base: clamp(1rem,     2vw,   1.125rem);
  --text-lg:   clamp(1.125rem, 2.5vw, 1.25rem);
  --text-xl:   clamp(1.25rem,  3vw,   1.5rem);
  --text-2xl:  clamp(1.5rem,   4vw,   2rem);
  --text-3xl:  clamp(2rem,     5vw,   2.75rem);
  --text-4xl:  clamp(2.5rem,   6vw,   3.5rem);
  --text-5xl:  clamp(3rem,     7vw,   5rem);

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Section padding (mobile-first) */
  --section-py: clamp(4rem, 8vw, 7rem);
  --section-px: clamp(1.25rem, 5vw, 2rem);

  /* Container */
  --container-max: 1320px;
  --container-px:  clamp(1.25rem, 5vw, 2rem);

  /* Borders */
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.3);
  --shadow-md:  0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.5);
  --shadow-yellow: 0 4px 20px rgba(252,188,6,0.25);

  /* Z-index */
  --z-base:    1;
  --z-sticky:  100;
  --z-overlay: 200;
  --z-modal:   300;
  --z-toast:   400;

  /* Nav */
  --nav-logo-h: 6.5rem;
  --nav-h: 9rem; /* logo 6.5rem + padding-block 2×1.25rem */

  /* Breakpoints (reference only — use in media queries) */
  /* 360px | 390px | 768px | 1024px | 1280px | 1440px */
}