/* ==========================================================================
   Lupa Pesquisas e Projetos — Design System
   Paleta e tipografia preservam a identidade original da marca; a estrutura
   HTML foi reconstruída do zero para ser estática, semântica e indexável.
   ========================================================================== */

:root {
  /* ---- Cor ---- */
  --orange:        #E08A2E; /* laranja "lupa" — CTAs, eyebrows, links ativos */
  --orange-dark:    #B5650F; /* hover / contraste sobre laranja */
  --orange-light:   #FFD9A8; /* tints, fundos suaves */
  --graphite:       #24242A; /* texto principal, títulos */
  --steel:          #58595B; /* seção institucional (herdado do site original) */
  --steel-dark:     #434447;
  --teal:           #4FB8C4; /* seção ambiental (herdado do site original) */
  --teal-dark:      #2E8A95;
  --paper:          #FFFFFF;
  --paper-warm:     #FBF9F6;
  --ink-soft:       #55565B; /* corpo de texto sobre branco */
  --line:           #E4E1DA;

  /* ---- Tipografia ---- */
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Inter", -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  /* ---- Ritmo ---- */
  --gap-section: clamp(4rem, 8vw, 7rem);
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink-soft);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

h1, h2, h3 {
  font-family: var(--font-display);
  color: var(--graphite);
  line-height: 1.15;
  margin: 0 0 0.6em;
  font-weight: 600;
}
h1 { font-size: clamp(2.4rem, 5vw, 3.6rem); font-weight: 500; }
h2 { font-size: clamp(1.9rem, 3.4vw, 2.7rem); }
h3 { font-size: 1.3rem; }
p { margin: 0 0 1em; }
.lede { font-size: 1.2rem; color: var(--ink-soft); max-width: 46ch; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange);
  display: block;
  margin-bottom: 1rem;
}
.eyebrow.on-dark { color: var(--orange-light); }

/* ---- Skip link (acessibilidade) ---- */
.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--graphite); color: #fff; padding: 0.75rem 1.25rem;
  z-index: 999;
}
.skip-link:focus { left: 1rem; top: 1rem; }

/* ---- Header ---- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 5.25rem;
}
.logo {
  display: flex; align-items: center; gap: 0.65rem;
  font-family: var(--font-display); font-weight: 600;
  font-size: 1.35rem; color: var(--graphite); text-decoration: none;
  letter-spacing: 0.01em;
}
.logo svg { width: 34px; height: 34px; flex-shrink: 0; }
.logo .tag {
  display: block; font-family: var(--font-mono); font-weight: 400;
  font-size: 0.62rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-soft); margin-top: 0.15rem;
}
nav.main-nav { display: flex; align-items: center; gap: 2.1rem; }
nav.main-nav a {
  font-size: 0.92rem; font-weight: 500; text-decoration: none;
  color: var(--graphite); position: relative; padding: 0.3rem 0;
}
nav.main-nav a[aria-current="page"] { color: var(--orange); }
nav.main-nav a:hover { color: var(--orange); }
.nav-toggle { display: none; }

@media (max-width: 860px) {
  nav.main-nav { display: none; }
}

/* ---- Botões ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 0.5rem; font-family: var(--font-body); font-weight: 600;
  font-size: 1.02rem; padding: 0.95rem 2rem; text-decoration: none;
  border: 2px solid transparent; cursor: pointer; transition: all .2s ease;
  border-radius: 2px;
}
.btn-solid { background: var(--orange); color: #fff; }
.btn-solid:hover { background: var(--orange-dark); }
.btn-outline { border-color: var(--orange); color: var(--orange); background: transparent; }
.btn-outline:hover { background: var(--orange); color: #fff; }
.btn-dark { background: var(--graphite); color: #fff; }
.btn-dark:hover { background: #000; }
.btn-block { width: 100%; }

/* ---- Hero ---- */
.hero { padding: clamp(3rem, 8vw, 5.5rem) 0 clamp(2.5rem, 6vw, 4rem); }
.hero .wrap { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 3.5rem; align-items: center; }
@media (max-width: 900px) { .hero .wrap { grid-template-columns: 1fr; } }
.hero-mark { width: 100%; max-width: 380px; margin: 0 auto; }

/* ---- Stat strip ---- */
.stat-strip { background: var(--paper-warm); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 3.5rem 0; }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; text-align: center; }
@media (max-width: 860px) { .stat-grid { grid-template-columns: repeat(2, 1fr); } }
.stat-num { font-family: var(--font-mono); font-size: 2.2rem; font-weight: 600; color: var(--orange); display: block; }
.stat-label { font-size: 0.92rem; color: var(--ink-soft); }
.national-line {
  text-align: center; margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--line);
  font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.18em;
  color: var(--orange); font-size: 1rem; font-weight: 600;
}

/* ---- Seções de serviço ---- */
.service-section { padding: var(--gap-section) 0; }
.service-section.on-steel { background: var(--steel); color: #fff; }
.service-section.on-steel h2, .service-section.on-steel h3 { color: #fff; }
.service-section.on-steel p { color: #E7E7E8; }
.service-section.on-teal { background: var(--teal); }
.service-section.on-teal h2, .service-section.on-teal h3 { color: var(--graphite); }
.service-section.on-teal p { color: #1E3A3D; }

.section-head { max-width: 62ch; margin-bottom: 3rem; }

.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.75rem; margin-bottom: 2.75rem; }
@media (max-width: 900px) { .card-grid { grid-template-columns: 1fr; } }
.card {
  background: #fff; border: 2px solid var(--line); padding: 2rem;
  transition: border-color .2s ease;
}
.card:hover { border-color: var(--orange); }
.on-steel .card { background: var(--steel-dark); border-color: #6E6F71; }
.on-teal .card { background: rgba(255,255,255,0.88); border: none; }
.card svg { color: var(--orange); margin-bottom: 1.25rem; }
.on-steel .card svg { color: var(--orange-light); }
.on-teal .card svg { color: var(--graphite); }
.card h3 { margin-bottom: 0.6rem; }
.on-steel .card h3 { color: #fff; }
.card p { font-size: 0.97rem; margin: 0; }
.on-steel .card p { color: #D4D4D6; }
.on-teal .card p { color: #1E3A3D; }

blockquote.pull {
  border-left: 4px solid var(--orange); background: rgba(224,138,46,0.06);
  padding: 1.25rem 1.75rem; margin: 0 0 2.5rem;
  font-family: var(--font-display); font-style: italic; font-size: 1.15rem;
  color: var(--graphite);
}

.media-block {
  background: #fff; border: 1px solid var(--line); border-radius: 10px;
  padding: 2rem; margin-bottom: 2.5rem;
}
.media-block img { border-radius: 8px; border: 1px solid var(--line); margin-bottom: 1.25rem; }
.media-block img:last-child { margin-bottom: 0; }

.tag-row { font-family: var(--font-mono); font-size: 0.85rem; letter-spacing: 0.08em; color: var(--ink-soft); margin-bottom: 2rem; }
.center { text-align: center; }

/* ---- Por que a Lupa ---- */
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2.5rem 2.25rem; }
@media (max-width: 900px) { .why-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .why-grid { grid-template-columns: 1fr; } }
.why-item { display: flex; gap: 1rem; }
.why-icon {
  width: 2.5rem; height: 2.5rem; border-radius: 50%; background: var(--orange-light);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0; color: var(--orange-dark);
}
.why-item h3 { font-size: 1.05rem; margin-bottom: 0.35rem; }
.why-item p { font-size: 0.95rem; margin: 0; }

/* ---- Formulário de contato ---- */
.contact-panel {
  background: var(--orange); padding: var(--gap-section) 0;
  position: relative;
}
.form-card { background: #fff; padding: clamp(1.75rem, 4vw, 3rem); box-shadow: 0 20px 50px rgba(0,0,0,0.12); border-top: 6px solid var(--graphite); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-bottom: 1.5rem; }
@media (max-width: 640px) { .form-row { grid-template-columns: 1fr; } }
.field label { display: block; font-weight: 700; font-size: 0.9rem; color: var(--graphite); margin-bottom: 0.4rem; }
.field input, .field select, .field textarea {
  width: 100%; border: 1px solid #C9C6BE; padding: 0.65rem 0.8rem; font-size: 0.95rem;
  font-family: var(--font-body); border-radius: 2px; background: #fff;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--orange); box-shadow: 0 0 0 3px rgba(224,138,46,0.18);
}
.field textarea { min-height: 130px; resize: vertical; }

/* ---- Rodapé ---- */
.site-footer { padding: 4.5rem 0 2.5rem; text-align: center; border-top: 1px solid var(--line); }
.footer-logo { display: flex; justify-content: center; margin-bottom: 1.5rem; }
.footer-logo svg { width: 42px; height: 42px; }
.footer-quote { font-family: var(--font-display); font-style: italic; font-size: 1.4rem; color: var(--graphite); max-width: 32ch; margin: 0 auto 0.5rem; }
.footer-national { font-family: var(--font-mono); font-size: 0.85rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--orange); margin-bottom: 2.5rem; }
.footer-links { display: flex; justify-content: center; gap: 1.75rem; margin-bottom: 2rem; flex-wrap: wrap; }
.footer-links a { text-decoration: none; font-size: 0.9rem; color: var(--ink-soft); }
.footer-links a:hover { color: var(--orange); }
.footer-bottom { border-top: 1px solid var(--line); padding-top: 1.75rem; font-size: 0.85rem; color: #8A8A8E; }

/* ---- Breadcrumb (SEO + navegação interna) ---- */
.breadcrumb { font-family: var(--font-mono); font-size: 0.8rem; color: var(--ink-soft); padding: 1.25rem 0 0; }
.breadcrumb a { text-decoration: none; color: var(--ink-soft); }
.breadcrumb a:hover { color: var(--orange); }

/* ---- Utilidades ---- */
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.cta-center { display: flex; justify-content: center; margin-top: 1rem; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}