/* ============================================================
   BASE.CSS — Variáveis, reset, tipografia, body
   Rodonaves Agregados | Arquitetura ECOTOKEN
   ============================================================ */

/* --- DESIGN TOKENS --- */
:root {
  /* Paleta institucional Rodonaves */
  --bg:           #ffffff;
  --surface:      #f4f7fb;
  --surface-dark: #0A1628;
  --surface-dark2:#081020;
  --border:       #dce3ed;
  --text:         #0f1f3d;
  --muted:        #64748b;
  --accent:       #003B8E;
  --accent-light: #1a56c4;
  --cta:          #F57C00;
  --cta-rgb:      245, 124, 0;
  --cta-hover:    #E65100;
  --success:      #16a34a;
  --white:        #ffffff;

  /* Tipografia responsiva */
  --h1:    clamp(28px, 5.5vw, 56px);
  --h2:    clamp(22px, 4vw, 40px);
  --h3:    clamp(18px, 3vw, 24px);
  --body:  clamp(15px, 2.2vw, 17px);
  --small: clamp(12px, 1.8vw, 14px);

  /* Espaçamentos */
  --radius:    12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.10);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.14);
}

/* --- RESET --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: var(--body);
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* --- TIPOGRAFIA --- */
h1 { font-size: var(--h1); line-height: 1.08; font-weight: 800; letter-spacing: -0.02em; }
h2 { font-size: var(--h2); line-height: 1.15; font-weight: 700; letter-spacing: -0.01em; }
h3 { font-size: var(--h3); line-height: 1.25; font-weight: 600; }
p  { line-height: 1.65; }

/* --- UTILITÁRIOS --- */
.hidden { display: none !important; }

.dark-section {
  background: var(--surface-dark);
  color: var(--white);
}

.dark-section .section-tag { color: var(--cta); }
.dark-section .section-title { color: var(--white); }
.dark-section .muted { color: rgba(255,255,255,0.6); }

/* --- SECTION TAG & TITLES --- */
.section-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

.section-title {
  margin-bottom: 12px;
}

.section-sub {
  color: var(--muted);
  max-width: 560px;
  margin-bottom: 40px;
}

/* --- FOCUS ACESSÍVEL --- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--cta);
  outline-offset: 3px;
}

/* --- REDUCED MOTION --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}