/* ==========================================================================
   PEROVANO — estilos do site institucional
   Tokens conforme o guia de identidade visual (proposta inicial v1).
   ========================================================================== */

:root {
  /* Tokens de marca (valores exatos do guia) */
  --brand-primary: #143C3A;
  --brand-background: #e4dfcf;
  --brand-text: #1D2424;
  --brand-accent: #D7E6A5;

  /* Derivados para estados e hierarquia */
  --brand-primary-hover: #0E2D2B;
  --brand-accent-hover: #E4EFC0;
  --text-muted: #56615F;
  --on-dark: #e4dfcf;
  --on-dark-muted: rgba(244, 242, 235, 0.78);
  --line: rgba(29, 36, 36, 0.14);
  --line-on-dark: rgba(244, 242, 235, 0.2);
  --disabled-bg: #D9D8D1;
  --disabled-text: #7B8482;

  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --container: 1160px;
  --gutter: 24px;
  --radius: 6px;
  --header-h: 72px;
  --section-y: clamp(72px, 9vw, 128px);
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.6;
  color: var(--brand-text);
  background: var(--brand-background);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }

a { color: inherit; }

::selection { background: var(--brand-accent); color: var(--brand-text); }

:focus-visible {
  outline: 3px solid var(--brand-primary);
  outline-offset: 3px;
  border-radius: 2px;
}
.on-dark :focus-visible { outline-color: var(--brand-accent); }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: 16px; top: -64px; z-index: 100;
  padding: 12px 18px;
  background: var(--brand-primary); color: var(--on-dark);
  font-weight: 600; text-decoration: none; border-radius: var(--radius);
}
.skip-link:focus { top: 12px; outline-color: var(--brand-accent); }

.container {
  width: 100%;
  max-width: calc(var(--container) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- Tipografia ---------- */
h1, h2, h3 { color: var(--brand-primary); letter-spacing: -0.02em; text-wrap: balance; }

h1 {
  font-size: clamp(2.125rem, 1.15rem + 3.6vw, 3.25rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
}
h2 {
  font-size: clamp(1.75rem, 1.2rem + 2.1vw, 2.5rem);
  font-weight: 700;
  line-height: 1.15;
}
h3 {
  font-size: clamp(1.25rem, 1.1rem + 0.5vw, 1.5rem);
  font-weight: 600;
  line-height: 1.25;
}

.eyebrow {
  display: block;
  margin-bottom: 20px;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.lead {
  font-size: clamp(1.0625rem, 1rem + 0.4vw, 1.25rem);
  color: var(--text-muted);
  max-width: 56ch;
}

.text-link {
  color: var(--brand-primary);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  transition: text-decoration-color 0.15s;
}
.text-link:hover { text-decoration-thickness: 2px; }

/* ---------- Botões ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 48px;
  padding: 12px 24px;
  font: inherit; font-size: 1rem; font-weight: 600; line-height: 1.2;
  text-decoration: none;
  border: 1.5px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color 0.15s, color 0.15s, border-color 0.15s;
}
.btn svg { width: 18px; height: 18px; flex: none; }

.btn--primary { background: var(--brand-primary); color: var(--on-dark); }
.btn--primary:hover { background: var(--brand-primary-hover); }

.btn--secondary { border-color: var(--brand-primary); color: var(--brand-primary); background: transparent; }
.btn--secondary:hover { background: var(--brand-primary); color: var(--on-dark); }

.btn--accent { background: var(--brand-accent); color: var(--brand-text); }
.btn--accent:hover { background: var(--brand-accent-hover); }

.btn--outline-light { border-color: var(--line-on-dark); color: var(--on-dark); background: transparent; }
.btn--outline-light:hover { border-color: var(--on-dark); background: rgba(244, 242, 235, 0.08); }

.btn--small { min-height: 42px; padding: 9px 18px; font-size: 0.9375rem; }

.btn:disabled, .btn[aria-disabled="true"] {
  background: var(--disabled-bg); border-color: transparent; color: var(--disabled-text);
  cursor: not-allowed; pointer-events: none;
}

/* ---------- Marca (assinatura textual provisória) ---------- */
/* Quando o arquivo definitivo existir, troque o conteúdo de .brand por
   <img src="/assets/brand/…svg" alt="PEROVANO — Engenharia de software">.
   Veja README.md › Pendências. */
.brand {
  display: inline-flex; flex-direction: column; gap: 3px;
  text-decoration: none; color: var(--brand-primary);
  line-height: 1;
}
.brand__name { font-size: 1.25rem; font-weight: 700; letter-spacing: 0.04em; }
.brand__descriptor {
  font-size: 0.625rem; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--text-muted);
}
.brand img { height: 36px; width: auto; }
.brand--footer .brand__name { font-size: 1.5rem; }
.brand--footer .brand__descriptor { font-size: 0.6875rem; }

/* ---------- Cabeçalho ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--brand-background);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.site-header.is-scrolled { border-bottom-color: var(--line); }

.site-header__inner {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap;
  gap: 8px 32px;
  min-height: var(--header-h);
}

.site-nav { display: flex; align-items: center; gap: 36px; }
.site-nav__list { display: flex; flex-wrap: wrap; gap: 4px 32px; }
.site-nav__list a {
  display: inline-block; padding: 8px 0;
  font-size: 0.9375rem; font-weight: 600; text-decoration: none;
  color: var(--brand-text);
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}
.site-nav__list a:hover { color: var(--brand-primary); border-bottom-color: var(--brand-primary); }

.nav-toggle {
  display: none;
  align-items: center; justify-content: center;
  width: 48px; height: 48px; margin-right: -12px;
  background: none; border: 0; border-radius: var(--radius);
  color: var(--brand-primary); cursor: pointer;
}
.nav-toggle__bars { position: relative; width: 24px; height: 14px; }
.nav-toggle__bars span {
  position: absolute; left: 0; width: 100%; height: 2px; background: currentColor;
  transition: transform 0.2s, opacity 0.2s, top 0.2s;
}
.nav-toggle__bars span:nth-child(1) { top: 0; }
.nav-toggle__bars span:nth-child(2) { top: 6px; }
.nav-toggle__bars span:nth-child(3) { top: 12px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { top: 6px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { top: 6px; transform: rotate(-45deg); }

@media (max-width: 880px) {
  /* Sem JS o menu permanece visível e quebra linha; com JS vira painel. */
  .site-nav { flex-wrap: wrap; gap: 8px 24px; padding-bottom: 12px; }
  .js .site-header__inner { flex-wrap: nowrap; }
  .js .nav-toggle { display: inline-flex; }
  .js .site-nav {
    display: none;
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 20px;
    padding: 8px var(--gutter) 28px;
    background: var(--brand-background);
    border-bottom: 1px solid var(--line);
    max-height: calc(100vh - var(--header-h)); overflow-y: auto;
  }
  .js .site-nav.is-open { display: flex; }
  .js .site-nav__list { flex-direction: column; gap: 0; }
  .js .site-nav__list a {
    display: block; padding: 16px 0; font-size: 1.125rem;
    border-bottom: 1px solid var(--line);
  }
  .js .site-nav .btn { width: 100%; }
}

/* ---------- Seções ---------- */
.section { padding-block: var(--section-y); }
.section--dark { background: var(--brand-primary); color: var(--on-dark); }
.section--dark h2, .section--dark h3 { color: var(--on-dark); }
.section--dark .eyebrow { color: var(--brand-accent); }
.section--dark .lead { color: var(--on-dark-muted); }
.section--ruled { border-top: 1px solid var(--line); }

.section__head { max-width: 720px; margin-bottom: clamp(40px, 5vw, 72px); }
.section__head h2 + .lead { margin-top: 20px; }

.split {
  display: grid; grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: 32px; row-gap: 40px;
}
.split__aside { grid-column: 1 / span 4; }
.split__main { grid-column: 6 / span 7; }
.split__aside h2 + .lead { margin-top: 20px; }

@media (min-width: 961px) {
  .split__aside--sticky { position: sticky; top: calc(var(--header-h) + 32px); align-self: start; }
}
@media (max-width: 960px) {
  .split { grid-template-columns: minmax(0, 1fr); }
  .split__aside, .split__main { grid-column: 1; }
}

/* ---------- Abertura ---------- */
.hero { position: relative; overflow: hidden; }
.hero__inner {
  display: grid; grid-template-columns: minmax(0, 1.75fr) minmax(0, 1fr);
  gap: 32px; align-items: stretch;
  min-height: min(720px, calc(100vh - var(--header-h)));
}
.hero__content {
  padding-block: clamp(56px, 8vw, 112px);
  align-self: center;
}
.hero h1 span { display: block; }
.hero .lead { margin-top: 28px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px 16px; margin-top: 40px; }

.hero__graphic { position: relative; align-self: stretch; min-height: 240px; }
.hero__graphic svg {
  position: absolute; right: calc(var(--gutter) * -1); bottom: 0;
  width: calc(100% + var(--gutter)); height: 100%;
}
/* Em telas largas, a composição sangra até a borda da janela, como no guia. */
@media (min-width: 1208px) {
  .hero__graphic svg {
    right: calc((100vw - var(--container)) / -2);
    width: calc(100% + (100vw - var(--container)) / 2);
  }
}
.shape-primary { fill: var(--brand-primary); }
.shape-accent { fill: var(--brand-accent); }

@media (max-width: 880px) {
  .hero__inner { grid-template-columns: 1fr; gap: 0; min-height: 0; }
  .hero__content { padding-bottom: 48px; }
  .hero__graphic { width: min(100%, 440px); height: 240px; min-height: 0; margin-left: auto; }
  .hero__actions .btn { flex: 1 1 220px; }
}

/* ---------- Soluções ---------- */
.solution {
  display: grid; grid-template-columns: 64px minmax(0, 1fr); column-gap: 16px;
  padding-block: 40px;
  border-top: 1px solid var(--line);
}
.solution:last-child { border-bottom: 1px solid var(--line); }
.solution__index {
  font-size: 0.9375rem; font-weight: 600; letter-spacing: 0.06em;
  color: var(--text-muted); padding-top: 6px;
}
.solution h3 + p { margin-top: 12px; }
.solution p { max-width: 60ch; }

.solution__when { margin-top: 24px; }
.solution__when-label {
  display: inline-block; margin-bottom: 12px; padding: 4px 10px;
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase;
  background: var(--brand-accent); color: var(--brand-text); border-radius: 3px;
}
.solution__when li {
  position: relative; padding-left: 22px; margin-bottom: 8px;
  color: var(--text-muted); font-size: 1rem; max-width: 58ch;
}
.solution__when li::before {
  content: ""; position: absolute; left: 0; top: 0.72em;
  width: 10px; height: 2px; background: var(--brand-primary);
}
.solution__note { margin-top: 20px; font-size: 0.9375rem; color: var(--text-muted); }

@media (max-width: 560px) {
  .solution { grid-template-columns: 1fr; row-gap: 8px; padding-block: 32px; }
  .solution__index { padding-top: 0; }
}

/* ---------- Como trabalhamos ---------- */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 48px 32px; }
.step { padding-top: 24px; border-top: 1px solid var(--line-on-dark); }
.step__index {
  display: block; margin-bottom: 20px;
  font-size: 0.9375rem; font-weight: 600; letter-spacing: 0.06em; color: var(--brand-accent);
}
.step h3 { font-size: 1.25rem; }
.step p { margin-top: 12px; font-size: 1rem; color: var(--on-dark-muted); }
.step__outcome { margin-top: 20px; font-size: 0.9375rem; }
.step__outcome dt {
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--brand-accent); margin-bottom: 4px;
}
.step__outcome dd { color: var(--on-dark); }
.steps-note {
  margin-top: clamp(40px, 5vw, 64px); max-width: 64ch;
  font-size: 0.9375rem; color: var(--on-dark-muted);
}

@media (max-width: 1024px) { .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; gap: 36px; } }

/* ---------- Produto próprio ---------- */
.tag {
  display: inline-block; padding: 5px 12px; margin-bottom: 20px;
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase;
  background: var(--brand-accent); color: var(--brand-text); border-radius: 3px;
}
.facts > div {
  display: grid; grid-template-columns: 160px minmax(0, 1fr); gap: 8px 24px;
  padding-block: 24px; border-top: 1px solid var(--line);
}
.facts > div:last-child { border-bottom: 1px solid var(--line); }
.facts dt { font-weight: 600; color: var(--brand-primary); }
.facts dd { max-width: 56ch; }
.facts + p { margin-top: 28px; }
@media (max-width: 560px) { .facts > div { grid-template-columns: 1fr; } }

/* ---------- Sobre ---------- */
.prose p + p { margin-top: 20px; }
.prose p { max-width: 62ch; }
.prose p:first-child { font-size: clamp(1.125rem, 1rem + 0.5vw, 1.375rem); line-height: 1.5; color: var(--brand-primary); }

.principles {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 32px;
  margin-top: 48px;
}
.principles > div { padding-block: 24px; border-top: 1px solid var(--line); }
.principles dt { font-weight: 600; color: var(--brand-primary); margin-bottom: 6px; }
.principles dd { color: var(--text-muted); font-size: 1rem; }
@media (max-width: 560px) { .principles { grid-template-columns: 1fr; } }

.profiles {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 24px;
  margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--line);
}
.profiles__name { font-weight: 600; color: var(--brand-primary); margin-right: auto; }

/* ---------- Contato ---------- */
.contact { position: relative; overflow: hidden; }
.contact__inner { position: relative; z-index: 1; max-width: 760px; }
.contact .lead { margin-top: 24px; }
.contact__actions { display: flex; flex-wrap: wrap; gap: 12px 16px; margin-top: 40px; }
.contact__details {
  display: flex; flex-wrap: wrap; gap: 24px 56px;
  margin-top: 56px; padding-top: 32px; border-top: 1px solid var(--line-on-dark);
}
.contact__details dt {
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--brand-accent); margin-bottom: 6px;
}
.contact__details a { color: var(--on-dark); text-underline-offset: 4px; overflow-wrap: anywhere; }
.contact__details a:hover { color: var(--brand-accent); }
.contact__shape {
  position: absolute; right: 0; bottom: 0; width: min(26vw, 380px); height: auto;
  fill: var(--brand-accent);
}
@media (max-width: 1240px) { .contact__shape { display: none; } }
@media (max-width: 560px) { .contact__actions .btn { width: 100%; } }

/* ---------- Rodapé ---------- */
.site-footer { padding-block: 64px 40px; }
.site-footer__top {
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 3fr) minmax(0, 4fr);
  gap: 40px 32px;
}
.site-footer__legal { margin-top: 20px; font-size: 0.9375rem; color: var(--text-muted); }
.site-footer h2 {
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--text-muted); margin-bottom: 16px;
}
.site-footer li + li { margin-top: 10px; }
.site-footer li a {
  font-size: 0.9375rem; text-decoration: none; color: var(--brand-text); overflow-wrap: anywhere;
}
.site-footer li a:hover { color: var(--brand-primary); text-decoration: underline; text-underline-offset: 4px; }
.site-footer__bottom {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px;
  margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--line);
  font-size: 0.875rem; color: var(--text-muted);
}
@media (max-width: 760px) { .site-footer__top { grid-template-columns: 1fr; } }

/* ---------- Página legal (privacy.html) ---------- */
.legal { padding-block: clamp(48px, 7vw, 96px) var(--section-y); }
.legal__inner { max-width: 760px; }
.legal__head { padding-bottom: 32px; margin-bottom: 40px; border-bottom: 1px solid var(--line); }
.legal__updated { margin-top: 16px; font-size: 0.9375rem; color: var(--text-muted); }
.legal h2 { font-size: clamp(1.375rem, 1.2rem + 0.6vw, 1.625rem); margin: 48px 0 14px; }
.legal p { margin-bottom: 14px; }
.legal ul { margin: 14px 0; }
.legal li { position: relative; padding-left: 28px; margin-bottom: 10px; }
.legal li::before {
  content: ""; position: absolute; left: 0; top: 0.72em;
  width: 10px; height: 2px; background: var(--brand-primary);
}
.legal li.yes::before, .legal li.no::before {
  top: 0; width: auto; height: auto; background: none; font-weight: 700; color: var(--brand-primary);
}
.legal li.yes::before { content: "✓"; }
.legal li.no::before { content: "✕"; }
.legal a { color: var(--brand-primary); font-weight: 600; text-underline-offset: 4px; overflow-wrap: anywhere; }
.callout {
  margin: 24px 0; padding: 20px 24px;
  background: var(--brand-accent); color: var(--brand-text); border-radius: var(--radius);
}

/* ---------- Movimento ---------- */
/* Só é ativado pelo JS quando há suporte e o usuário não pediu movimento reduzido;
   sem isso o conteúdo já nasce visível. */
.motion-ok .reveal { opacity: 0; transform: translateY(12px); transition: opacity 0.5s ease-out, transform 0.5s ease-out; }
.motion-ok .reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}

@media print {
  .site-header, .nav-toggle, .hero__graphic, .contact__shape { display: none; }
}