/* ============================================
   FLUXO ENGENHARIA - Design Tokens
   ============================================ */

:root {
  /* --- Cores Primarias (Navy desaturado) --- */
  --color-primary: #2C3E50;
  --color-primary-dark: #1A252F;
  --color-primary-light: #B0BEC5;
  --color-primary-50: #ECEFF1;

  /* --- Cor de Destaque / CTA (Laranja) --- */
  --color-accent: #E65100;
  --color-accent-dark: #BF360C;
  --color-accent-light: #FFF3E0;

  /* --- Neutros --- */
  --color-text: #1A1A2E;
  --color-text-secondary: #4A4A68;
  --color-text-muted: #7B7B94;
  --color-border: #E0E0E8;
  --color-surface: #FFFFFF;
  --color-bg: #F8F9FA;
  --color-bg-alt: #F0F4F3;

  /* --- Semanticas --- */
  --color-success: #2E7D32;
  --color-whatsapp: #25D366;
  --color-error: #C62828;

  /* --- Tipografia --- */
  --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-hero: clamp(2rem, 5vw, 3.5rem);

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

  --lh-tight: 1.25;
  --lh-base: 1.6;
  --lh-relaxed: 1.8;

  /* --- Espacamento --- */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* --- Layout --- */
  --container-max: 1200px;
  --container-narrow: 800px;
  --container-padding: clamp(1rem, 3vw, 2rem);

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

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.15);

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

  /* --- Z-index --- */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-whatsapp: 500;
}