/* ============================================================
   CAVE ENGENHARIA 3D — styles.css
   Paleta e tipografia conforme briefing v1.0
   ============================================================ */

:root {
  --grafite: #2E3538;
  --branco: #FFFFFF;
  --cinza-claro: #EDF0F1;
  --cinza-medio: #6B7478;
  --azul: #1E6B8C;
  --azul-hover: #16536D;
  --borda: #D8DDDF;
  --max-w: 1120px;
  --font-sans: "Inter", -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--grafite);
  background: var(--branco);
  -webkit-font-smoothing: antialiased;
}

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

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 20px; }
.prose { max-width: 75ch; }

/* ---------- Tipografia ---------- */
h1, h2, h3, h4 { font-weight: 600; line-height: 1.25; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.75rem, 4.5vw, 2.75rem); }
h2 { font-size: clamp(1.35rem, 3vw, 1.85rem); }
h3 { font-size: 1.15rem; }
p  { max-width: 75ch; }

.mono { font-family: var(--font-mono); font-size: 0.85rem; }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cinza-medio);
  display: block;
  margin-bottom: 0.75rem;
}
.muted { color: var(--cinza-medio); }

a { color: var(--azul); text-decoration: none; }
a:hover, a:focus-visible { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--azul); outline-offset: 2px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--branco);
  border-bottom: 1px solid var(--borda);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 68px; gap: 16px;
}
.logo { display: flex; align-items: center; gap: 12px; color: var(--grafite); text-decoration: none; }
.logo:hover { text-decoration: none; }
.logo-mark { flex: none; }
.logo-sep { width: 1px; height: 34px; background: var(--grafite); }
.logo-text { line-height: 1.1; }
.logo-text .l1 { font-weight: 700; letter-spacing: 0.28em; font-size: 1.05rem; }
.logo-text .l2 { font-weight: 500; letter-spacing: 0.18em; font-size: 0.62rem; color: var(--cinza-medio); border-top: 1px solid var(--borda); margin-top: 3px; padding-top: 3px; }

.main-nav { display: flex; align-items: center; gap: 22px; }
.main-nav a { color: var(--grafite); font-size: 0.92rem; font-weight: 500; }
.main-nav a[aria-current="page"] { color: var(--azul); }
.btn-nav {
  background: var(--azul); color: var(--branco) !important;
  padding: 10px 18px; border-radius: 4px; font-weight: 600;
}
.btn-nav:hover { background: var(--azul-hover); text-decoration: none; }

.nav-toggle {
  display: none; background: none; border: 1px solid var(--borda);
  border-radius: 4px; padding: 8px 10px; cursor: pointer; color: var(--grafite);
}

@media (max-width: 880px) {
  .nav-toggle { display: block; }
  .main-nav {
    display: none; position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--branco); border-bottom: 1px solid var(--borda);
    padding: 8px 20px 20px;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 4px; border-bottom: 1px solid var(--cinza-claro); }
  .btn-nav { margin-top: 12px; text-align: center; border-bottom: none !important; }
}

/* ---------- Botões ---------- */
.btn {
  display: inline-block; background: var(--azul); color: var(--branco);
  padding: 14px 26px; border-radius: 4px; font-weight: 600; font-size: 1rem;
  border: none; cursor: pointer; text-align: center;
}
.btn:hover, .btn:focus-visible { background: var(--azul-hover); text-decoration: none; }
.btn-outline {
  background: transparent; color: var(--grafite);
  border: 1px solid var(--grafite);
}
.btn-outline:hover { background: var(--cinza-claro); }
.btn-note { display: block; margin-top: 10px; font-size: 0.85rem; color: var(--cinza-medio); }

/* ---------- Seções ---------- */
.section { padding: 64px 0; }
.section.alt { background: var(--cinza-claro); }
.section-head { margin-bottom: 36px; }

/* ---------- Hero ---------- */
.hero { padding: 72px 0; }
.hero-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 48px; align-items: center; }
.hero h1 { margin-bottom: 16px; }
.hero .sub { font-size: 1.1rem; color: var(--cinza-medio); margin-bottom: 28px; }
.hero-img {
  background: var(--cinza-claro); border: 1px solid var(--borda); border-radius: 6px;
  aspect-ratio: 4/3; display: flex; align-items: center; justify-content: center;
  color: var(--cinza-medio); font-family: var(--font-mono); font-size: 0.8rem;
  text-align: center; padding: 20px;
}
@media (max-width: 880px) { .hero-grid { grid-template-columns: 1fr; } }

/* ---------- Cards ---------- */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.card {
  background: var(--branco); border: 1px solid var(--borda); border-radius: 6px;
  padding: 24px;
}
.section.alt .card { border-color: transparent; }
.card h3 { margin-bottom: 8px; }
.card p { font-size: 0.95rem; color: var(--cinza-medio); }
.card .icon { margin-bottom: 14px; color: var(--grafite); }

/* ---------- Etapas ---------- */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 20px; counter-reset: step; }
.step { border-top: 2px solid var(--grafite); padding-top: 14px; }
.step .num { font-family: var(--font-mono); font-size: 0.8rem; color: var(--azul); display: block; margin-bottom: 6px; }
.step p { font-size: 0.95rem; }

/* ---------- Tabelas ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--borda); border-radius: 6px; }
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; min-width: 640px; }
thead th {
  background: var(--cinza-claro); text-align: left; padding: 12px 14px;
  font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--grafite);
}
tbody td { padding: 12px 14px; border-top: 1px solid var(--borda); vertical-align: top; }
tbody td:first-child { font-weight: 600; white-space: nowrap; }

/* ---------- Bloco de limites ---------- */
.limits {
  border: 1px solid var(--grafite); border-radius: 6px; padding: 28px;
  background: var(--branco);
}
.limits h3 { font-family: var(--font-mono); font-size: 0.85rem; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 16px; }
.limits ul { list-style: none; }
.limits li { padding: 8px 0; border-top: 1px solid var(--cinza-claro); }
.limits li:first-child { border-top: none; }

/* ---------- Seções de serviço ---------- */
.svc { padding: 48px 0; border-top: 1px solid var(--borda); }
.svc:first-of-type { border-top: none; }
.svc-block { margin-top: 20px; }
.svc-block h4 { font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--azul); margin-bottom: 6px; }
.svc-block p { font-size: 0.98rem; }

/* ---------- FAQ ---------- */
.faq details { border-top: 1px solid var(--borda); }
.faq details:last-child { border-bottom: 1px solid var(--borda); }
.faq summary { padding: 16px 0; font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::after { content: "+"; font-family: var(--font-mono); color: var(--azul); }
.faq details[open] summary::after { content: "–"; }
.faq details p { padding: 0 0 16px; color: var(--cinza-medio); max-width: 75ch; }

/* ---------- Caso / aplicação ---------- */
.case { border: 1px solid var(--borda); border-radius: 6px; padding: 28px; margin-bottom: 20px; background: var(--branco); }
.case dl { display: grid; grid-template-columns: 140px 1fr; gap: 8px 20px; }
.case dt { font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--cinza-medio); padding-top: 3px; }
.case dd { font-size: 0.98rem; }
@media (max-width: 600px) { .case dl { grid-template-columns: 1fr; gap: 2px; } .case dd { margin-bottom: 10px; } }

/* ---------- Formulário ---------- */
.form-page { max-width: 720px; margin: 0 auto; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-grid .full { grid-column: 1 / -1; }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }

label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 6px; }
label .opt { font-weight: 400; color: var(--cinza-medio); }
input[type="text"], input[type="email"], input[type="tel"], select, textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--borda); border-radius: 4px;
  font-family: var(--font-sans); font-size: 1rem; color: var(--grafite); background: var(--branco);
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--azul); outline-offset: 0; border-color: var(--azul); }
textarea { min-height: 130px; resize: vertical; }
.hint { font-size: 0.82rem; color: var(--cinza-medio); margin-top: 5px; }
.consent { display: flex; gap: 10px; align-items: flex-start; font-size: 0.9rem; }
.consent input { margin-top: 4px; width: auto; }
.consent label { font-weight: 400; margin: 0; }
.form-msg { margin-top: 20px; padding: 18px 20px; border-radius: 6px; display: none; }
.form-msg.ok { display: block; background: var(--cinza-claro); border-left: 3px solid var(--azul); }
.form-msg.err { display: block; background: #FBEDEA; border-left: 3px solid #B3402A; }
.hp-field { position: absolute; left: -9999px; opacity: 0; height: 0; overflow: hidden; }

/* ---------- CTA final ---------- */
.cta-final { text-align: left; }
.cta-final h2 { margin-bottom: 10px; }
.cta-final p { margin-bottom: 24px; }
.cta-buttons { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- Footer ---------- */
.site-footer { background: var(--grafite); color: var(--cinza-claro); padding: 48px 0 32px; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
.site-footer a { color: var(--branco); }
.site-footer .mono { color: #A9B2B6; }
.footer-legal { margin-top: 32px; padding-top: 20px; border-top: 1px solid #465055; font-size: 0.8rem; color: #A9B2B6; }
@media (max-width: 720px) { .footer-grid { grid-template-columns: 1fr; } }

/* ---------- WhatsApp flutuante ---------- */
.wa-float {
  position: fixed; right: 18px; bottom: 18px; z-index: 60;
  background: #25D366; color: #fff; border-radius: 50%;
  width: 56px; height: 56px; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 14px rgba(0,0,0,0.22);
}
.wa-float:hover { transform: scale(1.05); text-decoration: none; }

/* ---------- Banner de consentimento (LGPD) ---------- */
.consent-banner {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 70;
  background: var(--grafite); color: var(--branco); padding: 20px;
  display: none;
}
.consent-banner.visible { display: block; }
.consent-inner { max-width: var(--max-w); margin: 0 auto; display: flex; gap: 20px; align-items: center; flex-wrap: wrap; }
.consent-inner p { font-size: 0.88rem; flex: 1 1 380px; max-width: none; }
.consent-inner a { color: #9FD0E4; }
.consent-actions { display: flex; gap: 10px; }
.consent-actions .btn { padding: 10px 18px; font-size: 0.9rem; }
.consent-actions .btn-reject { background: transparent; border: 1px solid #6B7478; color: var(--branco); }
.consent-actions .btn-reject:hover { background: #465055; }

/* ---------- Utilidades ---------- */
.mt-1 { margin-top: 12px; } .mt-2 { margin-top: 24px; } .mt-3 { margin-top: 40px; }
.mb-1 { margin-bottom: 12px; } .mb-2 { margin-bottom: 24px; }
.list-check { list-style: none; }
.list-check li { padding: 10px 0 10px 28px; position: relative; border-top: 1px solid var(--cinza-claro); }
.list-check li::before { content: "—"; position: absolute; left: 0; color: var(--azul); font-family: var(--font-mono); }

/* ---------- Faixa de saúde (seção escura) ---------- */
.section.dark { background: var(--grafite); color: var(--branco); }
.section.dark h2 { color: var(--branco); }
.section.dark a:not(.btn) { color: #9FD0E4; }
.card-dark { background: #3A4246; border-color: #465055; }
.card-dark h3 { color: var(--branco); }
.card-dark p { color: #C9D1D4; }

/* ---------- Painéis duplos (mapa de capacidades) ---------- */
.duo { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.duo-panel {
  background: var(--branco); border: 1px solid var(--borda); border-radius: 6px;
  padding: 32px; display: flex; flex-direction: column;
}
.duo-panel h3 { font-size: 1.3rem; margin-bottom: 12px; }
.duo-panel .btn { align-self: flex-start; margin-top: auto; }
.duo-panel .list-check { margin-bottom: 8px; }
.duo-panel .list-check li { font-size: 0.95rem; }
@media (max-width: 820px) { .duo { grid-template-columns: 1fr; } }

/* ---------- Foto do hero ---------- */
.hero-photo {
  width: 100%; height: auto; border-radius: 6px;
  border: 1px solid var(--borda);
}

/* ---------- Cartões de categoria (áreas de atuação) ---------- */
.cat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.cat-card {
  background: var(--branco); border: 1px solid var(--borda); border-radius: 6px;
  overflow: hidden; display: flex; flex-direction: column;
}
.cat-cover {
  aspect-ratio: 16/9; background: var(--cinza-claro);
  display: flex; align-items: center; justify-content: center;
  color: var(--cinza-medio); font-family: var(--font-mono); font-size: 0.78rem;
  text-align: center; padding: 16px; border-bottom: 1px solid var(--borda);
}
.cat-cover img { width: 100%; height: 100%; object-fit: cover; }
.cat-body { padding: 26px; display: flex; flex-direction: column; flex: 1; }
.cat-body h3 { font-size: 1.25rem; margin-bottom: 10px; }
.cat-body .list-check { margin-bottom: 18px; }
.cat-body .list-check li { font-size: 0.93rem; padding: 8px 0 8px 26px; }
.cat-body .btn { align-self: flex-start; margin-top: auto; }
@media (max-width: 820px) { .cat-grid { grid-template-columns: 1fr; } }