/* =========================================================
   Patrimônio Contabilidade — Design tokens & base styles
   ========================================================= */

:root{
  /* Color */
  --ink: #16231F;
  --ink-soft: #3B4A45;
  --bg: #FBFAF7;
  --panel: #F0EFE8;
  --panel-line: #DEDACE;
  --brand: #1F5D45;
  --brand-dark: #163F30;
  --brand-tint: #E4EEE9;
  --gold: #A9793B;
  --gold-tint: #F3E9D9;
  --white: #FFFFFF;
  --danger: #8C3A2B;

  /* Type */
  --font-head: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, monospace;

  /* Scale */
  --step--1: clamp(0.85rem, 0.82rem + 0.15vw, 0.95rem);
  --step-0:  clamp(1rem, 0.96rem + 0.2vw, 1.125rem);
  --step-1:  clamp(1.25rem, 1.15rem + 0.4vw, 1.5rem);
  --step-2:  clamp(1.6rem, 1.4rem + 0.9vw, 2.1rem);
  --step-3:  clamp(2.1rem, 1.7rem + 1.7vw, 3rem);
  --step-4:  clamp(2.6rem, 2rem + 2.6vw, 4rem);

  --maxw: 1180px;
  --radius-s: 6px;
  --radius-m: 10px;
  --shadow-1: 0 1px 2px rgba(22,35,31,0.06), 0 8px 24px -12px rgba(22,35,31,0.12);
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body{
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

h1,h2,h3{
  font-family: var(--font-head);
  color: var(--ink);
  line-height: 1.12;
  margin: 0 0 0.5em;
  font-weight: 600;
  letter-spacing: -0.01em;
}
h1{ font-size: var(--step-4); }
h2{ font-size: var(--step-3); }
h3{ font-size: var(--step-1); }

p{ margin: 0 0 1em; max-width: 62ch; }
a{ color: var(--brand-dark); }

.container{
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 1.25rem;
}
@media (min-width: 768px){
  .container{ padding-inline: 2rem; }
}

section{ padding-block: clamp(3.5rem, 5vw + 1rem, 6.5rem); }

.eyebrow-plain{
  font-size: var(--step--1);
  color: var(--ink-soft);
  margin-bottom: 0.75rem;
}

/* Buttons */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.98rem;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-s);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  min-height: 48px;
}
.btn:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline: 3px solid var(--gold);
  outline-offset: 2px;
}
.btn-primary{
  background: var(--brand);
  color: var(--white);
  box-shadow: var(--shadow-1);
}
.btn-primary:hover{ background: var(--brand-dark); transform: translateY(-1px); }
.btn-ghost{
  background: transparent;
  border-color: var(--panel-line);
  color: var(--ink);
}
.btn-ghost:hover{ border-color: var(--brand); color: var(--brand-dark); }
.btn-block{ width: 100%; }

/* Skip link */
.skip-link{
  position: absolute;
  left: -999px;
  top: auto;
  background: var(--ink);
  color: var(--white);
  padding: 0.75rem 1.25rem;
  z-index: 1000;
  border-radius: var(--radius-s);
}
.skip-link:focus{
  left: 1rem;
  top: 1rem;
}

.visually-hidden{
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
}

hr.rule{
  border: none;
  border-top: 1px solid var(--panel-line);
  margin: 2rem 0;
}