/* ==========================================================================
   projetos.lri.com.br — estilo global (PT + EN)
   Paleta da marca LRI: verde #74b527 · grafite #1F2A33 · Montserrat
   ========================================================================== */

:root {
  --green: #74b527;
  --green-dark: #5f9420;
  --green-soft: rgba(116, 181, 39, 0.12);
  --dark: #1f2a33;
  --dark-2: #26333e;
  --dark-3: #2e3d4a;
  --light: #f5f7f6;
  --white: #ffffff;
  --text: #2b3640;
  --text-soft: #5c6b77;
  --text-on-dark: #e8edf0;
  --text-on-dark-soft: #a7b4bd;
  --radius: 14px;
  --shadow: 0 18px 45px rgba(31, 42, 51, 0.10);
  --font: 'Montserrat', 'Segoe UI', Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; }

a { color: var(--green-dark); }

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- tipografia de seção ---------- */

.section-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 14px;
}

h2 {
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: 18px;
}

.section-intro {
  max-width: 720px;
  font-size: 1.06rem;
  color: var(--text-soft);
  margin-bottom: 48px;
}

section { padding: 96px 0; }

.on-dark { background: var(--dark); color: var(--text-on-dark); }
.on-dark h2 { color: var(--white); }
.on-dark .section-intro { color: var(--text-on-dark-soft); }
.on-light { background: var(--light); }

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(31, 42, 51, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--white);
  text-decoration: none;
}

.brand svg { height: 40px; width: auto; display: block; }

.brand-sub {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--green);
  border-left: 1px solid rgba(255, 255, 255, 0.25);
  padding-left: 12px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.main-nav a {
  color: var(--text-on-dark-soft);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  transition: color 0.2s ease;
}

.main-nav a:hover { color: var(--white); }

.lang-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 700;
}

.lang-switch a,
.lang-switch span {
  color: var(--text-on-dark-soft);
  text-decoration: none;
  padding: 4px 8px;
  border-radius: 6px;
}

.lang-switch .active {
  color: var(--dark);
  background: var(--green);
}

.lang-switch a:hover { color: var(--white); }

.nav-toggle { display: none; }

/* ---------- hero ---------- */

.hero {
  position: relative;
  background:
    radial-gradient(ellipse 55% 60% at 82% 8%, rgba(116, 181, 39, 0.16), transparent 65%),
    linear-gradient(160deg, #253440 0%, var(--dark) 55%, #16202a 100%);
  color: var(--text-on-dark);
  padding: 130px 0 140px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 80% at 50% 20%, #000 30%, transparent 80%);
  pointer-events: none;
}

.hero .container { position: relative; }

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green);
  border: 1px solid rgba(116, 181, 39, 0.45);
  border-radius: 999px;
  padding: 8px 18px;
  margin-bottom: 30px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5.4vw, 3.9rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--white);
  max-width: 850px;
}

.hero h1 em {
  font-style: normal;
  color: var(--green);
}

.hero-sub {
  margin-top: 26px;
  max-width: 640px;
  font-size: 1.15rem;
  color: var(--text-on-dark-soft);
}

.hero-actions {
  margin-top: 42px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

/* ---------- botões ---------- */

.btn {
  display: inline-block;
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: 10px;
  padding: 15px 30px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform 0.15s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn:hover { transform: translateY(-2px); }

.btn-primary { background: var(--green); color: var(--dark); }
.btn-primary:hover { background: #83c631; }

.btn-ghost { border-color: rgba(255, 255, 255, 0.35); color: var(--white); background: transparent; }
.btn-ghost:hover { border-color: var(--green); color: var(--green); }

.btn-dark { background: var(--dark); color: var(--white); }
.btn-dark:hover { background: var(--dark-3); }

/* ---------- timeline (a transição) ---------- */

.timeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 27px;
  left: 6%;
  right: 6%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--green) 15%, var(--green) 85%, transparent);
  opacity: 0.5;
}

.timeline-step { position: relative; }

.timeline-num {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--green);
  color: var(--green-dark);
  font-weight: 800;
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.timeline-step h3 {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.timeline-step p { color: var(--text-soft); font-size: 0.98rem; }

/* ---------- motores de engenharia ---------- */

.engines {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.engine-card {
  background: var(--white);
  border: 1px solid rgba(31, 42, 51, 0.08);
  border-top: 5px solid var(--green);
  border-radius: var(--radius);
  padding: 40px 36px;
  box-shadow: var(--shadow);
}

.engine-card h3 {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.engine-card .engine-sub {
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--green-dark);
  margin-bottom: 18px;
}

.engine-card p { color: var(--text-soft); margin-bottom: 18px; }

.engine-card ul { list-style: none; }

.engine-card li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 10px;
  font-size: 0.96rem;
}

.engine-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: var(--green);
}

.engine-lines {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--dark);
  background: var(--green-soft);
  border: 1px solid rgba(116, 181, 39, 0.4);
  border-radius: 999px;
  padding: 6px 14px;
}

/* ---------- cybersecurity ---------- */

.cyber-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.cyber-item {
  background: var(--dark-2);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius);
  padding: 30px 26px;
}

.cyber-item h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.cyber-item h3::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 12px rgba(116, 181, 39, 0.8);
  flex: 0 0 auto;
}

.cyber-item p { font-size: 0.93rem; color: var(--text-on-dark-soft); }

/* ---------- certificação ---------- */

.cert-badges {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.cert-badge {
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.12em;
  color: var(--dark);
  background: var(--white);
  border: 2px solid var(--green);
  border-radius: 10px;
  padding: 14px 30px;
}

.cert-badge small {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-soft);
  text-transform: none;
}

.cert-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: cert;
}

.cert-step {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid rgba(31, 42, 51, 0.08);
  padding: 28px 24px;
  counter-increment: cert;
}

.cert-step::before {
  content: counter(cert, decimal-leading-zero);
  display: block;
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--green);
  margin-bottom: 12px;
}

.cert-step h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.cert-step p { font-size: 0.9rem; color: var(--text-soft); }

/* ---------- ecossistema ---------- */

.ecosystem {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.eco-node {
  background: var(--dark-2);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius);
  padding: 26px 24px;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.eco-node:hover { border-color: var(--green); transform: translateY(-3px); }

.eco-node h3 { font-size: 1rem; font-weight: 700; color: var(--green); margin-bottom: 8px; }
.eco-node p { font-size: 0.9rem; color: var(--text-on-dark-soft); }

.eco-statement {
  margin-top: 54px;
  text-align: center;
  font-size: clamp(1.15rem, 2.4vw, 1.6rem);
  font-weight: 700;
  color: var(--white);
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

.eco-statement em { font-style: normal; color: var(--green); }

/* ---------- vitrine de produtos ---------- */

.products {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 26px;
}

.product-card {
  background: var(--white);
  border: 1px solid rgba(31, 42, 51, 0.08);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease;
}

.product-card:hover { transform: translateY(-4px); }

.product-visual {
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse 80% 90% at 50% 110%, rgba(116, 181, 39, 0.25), transparent 70%),
    linear-gradient(150deg, var(--dark-3), var(--dark));
  color: var(--white);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.06em;
}

.product-visual img { width: 100%; height: 100%; object-fit: cover; }

.product-body { padding: 22px 22px 26px; display: flex; flex-direction: column; flex: 1; }

.product-body .chip { align-self: flex-start; margin-bottom: 12px; }

.product-body h3 { font-size: 1.08rem; font-weight: 800; margin-bottom: 8px; }

.product-body p { font-size: 0.9rem; color: var(--text-soft); flex: 1; }

.product-link {
  margin-top: 16px;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--green-dark);
  text-decoration: none;
}

.product-link:hover { text-decoration: underline; }

/* ---------- trabalhe com a LRI ---------- */

.paths {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.path-card {
  background: var(--white);
  border: 1px solid rgba(31, 42, 51, 0.08);
  border-radius: var(--radius);
  padding: 36px 30px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}

.path-card h3 { font-size: 1.15rem; font-weight: 800; margin-bottom: 12px; }
.path-card p { font-size: 0.94rem; color: var(--text-soft); flex: 1; margin-bottom: 22px; }

/* ---------- contato ---------- */

.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 60px;
  align-items: start;
}

.contact-info h2 { color: var(--white); }

.contact-info p { color: var(--text-on-dark-soft); margin-bottom: 26px; }

.contact-detail {
  font-size: 0.95rem;
  color: var(--text-on-dark);
  margin-bottom: 10px;
}

.contact-detail strong { color: var(--green); }

.contact-detail a { color: var(--text-on-dark); }

.contact-form {
  background: var(--dark-2);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 38px 34px;
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

.form-field { margin-bottom: 18px; }

.form-field label {
  display: block;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-on-dark);
  margin-bottom: 7px;
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  font-family: var(--font);
  font-size: 0.95rem;
  color: var(--white);
  background: var(--dark);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 9px;
  padding: 13px 14px;
  transition: border-color 0.2s ease;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--green);
}

.form-field textarea { resize: vertical; min-height: 120px; }

.form-status {
  display: none;
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: 9px;
  font-size: 0.92rem;
  font-weight: 600;
}

.form-status.ok { display: block; background: rgba(116, 181, 39, 0.15); border: 1px solid var(--green); color: #c9e8a2; }
.form-status.err { display: block; background: rgba(220, 80, 80, 0.12); border: 1px solid #d97070; color: #f0b9b9; }

/* honeypot anti-spam: fora da tela, invisível para humanos */
.hp-field { position: absolute; left: -9999px; opacity: 0; height: 0; overflow: hidden; }

/* ---------- footer ---------- */

.site-footer {
  background: #16202a;
  color: var(--text-on-dark-soft);
  padding: 54px 0 40px;
  font-size: 0.88rem;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  margin-bottom: 34px;
}

.site-footer .brand svg { height: 34px; }

.site-footer a { color: var(--text-on-dark-soft); }

.footer-legal {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 22px;
  font-size: 0.76rem;
}

/* ---------- animação de entrada ---------- */

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- responsivo ---------- */

@media (max-width: 960px) {
  .engines, .contact-wrap { grid-template-columns: 1fr; }
  .cyber-grid, .ecosystem, .paths { grid-template-columns: 1fr 1fr; }
  .products, .cert-steps { grid-template-columns: 1fr 1fr; }
  .main-nav { display: none; }
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 8px;
    color: var(--white);
    font-size: 1.3rem;
    width: 42px;
    height: 42px;
    cursor: pointer;
  }
  .main-nav.open {
    display: flex;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    background: var(--dark);
    padding: 18px 24px 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    gap: 16px;
  }
}

@media (max-width: 640px) {
  section { padding: 68px 0; }
  .hero { padding: 90px 0 100px; }
  .timeline { grid-template-columns: 1fr; }
  .timeline::before { display: none; }
  .cyber-grid, .ecosystem, .paths, .products, .cert-steps { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .brand-sub { display: none; }
}