/* RMZ Engenharia — identidade visual real (Pantone Classic Blue 19-4052,
   manual de marca 2023-01, Refinaria Design). Fundo escuro dominante,
   fotografia de obra em primeiro plano, corte diagonal como assinatura. */

:root {
  --azul-marca:     #0F4C81; /* Pantone Classic Blue 19-4052 */
  --azul-escuro:    #0A2E4F;
  --azul-profundo:  #051A2E;
  --azul-claro:     #4E92C7;
  --azul-claro-2:   #8FBFE3;
  --branco:         #FFFFFF;
  --texto-claro:    rgba(255,255,255,.82);
  --fonte-titulo:   'Montserrat', sans-serif;
  --fonte-corpo:    'Open Sans', sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--fonte-corpo);
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: .1px;
  color: var(--texto-claro);
  background: var(--azul-profundo);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--fonte-titulo);
  color: var(--branco);
  margin: 0 0 .5em;
  text-transform: uppercase;
  letter-spacing: .3px;
}
h1 { font-size: clamp(34px, 5vw, 56px); font-weight: 300; line-height: 1.08; }
h1 strong { font-weight: 800; }
h2 { font-size: clamp(26px, 3.4vw, 38px); font-weight: 300; }
h2 strong { font-weight: 800; }
h3 { font-size: 19px; font-weight: 700; letter-spacing: .5px; }
h4 { font-size: 16px; font-weight: 700; letter-spacing: .4px; }

.eyebrow {
  display: inline-block;
  font-family: var(--fonte-titulo);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--azul-claro-2);
  margin-bottom: 10px;
}

.hairline {
  width: 64px;
  height: 3px;
  background: var(--azul-claro);
  margin: 18px 0 28px;
  border: none;
}

p { margin: 0 0 1em; color: var(--texto-claro); }

a { color: var(--azul-claro-2); text-decoration: none; }
a:hover { text-decoration: underline; }

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

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

.secao { padding: 112px 0; position: relative; }
.secao--clara {
  background: var(--azul-escuro);
}
.secao--branca {
  background: var(--branco);
  color: #1A2733;
}
.secao--branca p { color: #4A5A68; }
.secao--branca h1, .secao--branca h2, .secao--branca h3, .secao--branca h4 { color: var(--azul-profundo); }
.secao--branca .eyebrow { color: var(--azul-marca); }

/* Header / nav */
.cabecalho {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(5, 26, 46, .92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.cabecalho__barra {
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.marca { display: flex; align-items: center; gap: 10px; }
.marca img { height: 40px; width: auto; }
.nav { display: flex; gap: 26px; flex-wrap: wrap; }
.nav a {
  color: rgba(255,255,255,.78);
  font-family: var(--fonte-titulo);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: .5px;
  text-transform: uppercase;
}
.nav a:hover { color: var(--branco); text-decoration: none; }
.nav a.ativo { color: var(--azul-claro-2); }

/* Botões */
.botao {
  display: inline-block;
  font-family: var(--fonte-titulo);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--azul-profundo);
  background: var(--branco);
  padding: 15px 32px;
  border: none;
  cursor: pointer;
  clip-path: polygon(0 0, 100% 0, 100% 70%, 94% 100%, 0 100%);
}
.botao:hover { background: var(--azul-claro-2); text-decoration: none; }
.botao--fantasma {
  background: transparent;
  color: var(--branco);
  box-shadow: inset 0 0 0 2px rgba(255,255,255,.5);
}
.botao--fantasma:hover { box-shadow: inset 0 0 0 2px var(--branco); background: rgba(255,255,255,.06); }

/* Hero — foto de fundo + corte diagonal de assinatura */
.hero {
  position: relative;
  min-height: 82vh;
  display: flex;
  align-items: center;
  color: var(--branco);
  background: linear-gradient(rgba(5,26,46,.15) 0%, rgba(5,26,46,.55) 100%), var(--foto-hero, none) center/cover;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--azul-escuro);
  clip-path: polygon(58% 0, 100% 0, 100% 100%, 38% 100%);
  opacity: .82;
}
.hero__conteudo { position: relative; z-index: 2; max-width: 620px; }
.hero .eyebrow { color: var(--azul-claro-2); }
.hero p { font-size: 18px; max-width: 520px; color: rgba(255,255,255,.88); }
.hero__marca { position: absolute; right: 6%; bottom: 12%; z-index: 2; text-align: right; }
.hero__marca img { height: 84px; margin-left: auto; }
@media (max-width: 900px) {
  .hero::after { display: none; }
  .hero__marca { display: none; }
}

/* Números */
.numeros { display: flex; justify-content: center; gap: 72px; flex-wrap: wrap; text-align: center; }
.numeros__item strong {
  display: block;
  font-family: var(--fonte-titulo);
  font-weight: 800;
  font-size: clamp(32px, 4vw, 48px);
  color: var(--branco);
  line-height: 1;
}
.numeros__item span { font-size: 13px; letter-spacing: 1px; text-transform: uppercase; color: var(--azul-claro-2); }

/* Grids reutilizados */
.grid { display: grid; gap: 2px; background: rgba(255,255,255,.08); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .grid--3, .grid--4, .numeros { grid-template-columns: 1fr; } }

.cartao {
  background: var(--azul-profundo);
  padding: 30px 26px;
}
.secao--branca .cartao { background: var(--branco); box-shadow: 0 0 0 1px #E5E9F0; }
.cartao h3 { margin-bottom: .4em; }
.cartao--segmento { text-align: center; border-top: 3px solid var(--seg-cor, var(--azul-claro)); }
.cartao--segmento .icone { display: flex; justify-content: center; color: var(--seg-cor, var(--azul-claro)); margin-bottom: 14px; }

/* Cards de obra — foto real de fundo, tag de segmento na base */
.obra {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: #12324f center/cover;
}
.obra::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(5,15,25,.92) 0%, rgba(5,15,25,.15) 55%, transparent 75%);
}
.obra__corpo { position: absolute; left: 0; right: 0; bottom: 0; padding: 18px 20px; z-index: 1; }
.obra__segmento {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--azul-profundo);
  background: var(--azul-claro-2);
  padding: 3px 9px;
  margin-bottom: 8px;
}
.obra h3 { font-size: 16px; margin-bottom: 2px; color: var(--branco); }
.obra__meta { font-size: 13px; color: rgba(255,255,255,.75); margin: 0; }

/* Filtro de segmentos no portfólio */
.filtro { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 44px; }
.filtro button {
  font-family: var(--fonte-titulo);
  font-weight: 600;
  font-size: 13px;
  padding: 9px 18px;
  border: 1px solid rgba(255,255,255,.25);
  background: transparent;
  color: rgba(255,255,255,.8);
  cursor: pointer;
}
.filtro button.ativo { background: var(--azul-claro); color: var(--azul-profundo); border-color: var(--azul-claro); }

/* Formulários */
.form-grupo { margin-bottom: 18px; }
.form-grupo label { display: block; font-weight: 700; margin-bottom: 6px; font-size: 13px; letter-spacing: .3px; text-transform: uppercase; color: var(--azul-claro-2); }
.form-grupo input,
.form-grupo select,
.form-grupo textarea {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid rgba(255,255,255,.2);
  background: rgba(255,255,255,.04);
  color: var(--branco);
  font-family: var(--fonte-corpo);
  font-size: 15px;
}
.form-grupo textarea { min-height: 120px; resize: vertical; }
.abas { display: flex; gap: 4px; margin-bottom: 36px; border-bottom: 1px solid rgba(255,255,255,.15); }
.abas button {
  font-family: var(--fonte-titulo);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .5px;
  text-transform: uppercase;
  padding: 14px 22px;
  border: none;
  background: none;
  cursor: pointer;
  color: rgba(255,255,255,.55);
  border-bottom: 3px solid transparent;
}
.abas button.ativo { color: var(--branco); border-color: var(--azul-claro); }
.aba-conteudo { display: none; }
.aba-conteudo.ativo { display: block; }
.alerta { padding: 14px 18px; margin-bottom: 20px; font-size: 14px; border-left: 3px solid; }
.alerta--ok { background: rgba(76,175,80,.12); border-color: #4CAF50; color: #B8E6BA; }
.alerta--erro { background: rgba(244,67,54,.12); border-color: #F44336; color: #F5B9B4; }

/* Footer */
.rodape {
  background: var(--azul-profundo);
  color: rgba(255,255,255,.65);
  padding: 56px 0 24px;
  font-size: 14px;
  border-top: 1px solid rgba(255,255,255,.08);
}
.rodape a { color: rgba(255,255,255,.8); }
.rodape__topo { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 32px; margin-bottom: 32px; }
.rodape__marca img { height: 36px; margin-bottom: 8px; }
.rodape__nav { display: flex; gap: 20px; flex-wrap: wrap; }
.rodape__linha { border-top: 1px solid rgba(255,255,255,.1); padding-top: 16px; opacity: .7; font-size: 13px; }

.lista-simples { list-style: none; padding: 0; margin: 0; }
.lista-simples li { padding: 7px 0 7px 24px; position: relative; }
.lista-simples li::before { content: '—'; position: absolute; left: 0; color: var(--azul-claro-2); }