/* ============ HORUS Saneamento — estilos ============ */
:root{
  --bg:#f4f2ed;            /* fundo claro quente do mockup */
  --azul:#1e3d9c;          /* azul dos títulos display */
  --azul-cta:#2a5ba4;      /* azul da seção de contato */
  --azul-claro:#328ecb;    /* linhas onduladas / detalhes */
  --marinho:#16213c;       /* overlay do hero */
  --escuro:#232021;        /* seções escuras / rodapé */
  --texto:#4a4f57;
  --branco:#f7f6f2;
  --raio:14px;
  --display:'Montserrat',sans-serif;
  --corpo:'Manrope',sans-serif;
  --mono:'Space Mono',monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--corpo);color:var(--texto);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.centro{text-align:center}

/* Tipografia display */
.display{font-family:var(--display);font-weight:800;text-transform:uppercase;letter-spacing:.04em;line-height:1.12}
.titulo-azul{color:var(--azul);font-size:clamp(1.6rem,3.4vw,2.6rem)}
.rotulo{color:#9a9a94;font-size:.95rem;margin-bottom:10px}
.olho-mono{font-family:var(--mono);text-transform:uppercase;font-size:.72rem;letter-spacing:.14em;color:var(--azul-cta);margin-bottom:10px}
.lead{max-width:640px;margin:18px auto 0;font-size:.98rem}

/* Botões */
.botao{display:inline-block;padding:11px 26px;border-radius:999px;font-weight:600;font-size:.92rem;transition:transform .2s,background .2s,color .2s;border:1.5px solid transparent}
.botao:hover{transform:translateY(-2px)}
.botao-claro{background:var(--branco);color:var(--marinho)}
.botao-contorno{border-color:rgba(247,246,242,.7);color:var(--branco)}
.botao-contorno:hover{background:rgba(247,246,242,.12)}

/* Header */
.topo{position:fixed;inset:0 0 auto 0;z-index:50;padding:16px 0;transition:background .3s,box-shadow .3s}
.topo.rolado{background:rgba(22,33,60,.94);backdrop-filter:blur(8px);box-shadow:0 2px 18px rgba(0,0,0,.25);padding:10px 0}
.topo-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}
.marca{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.marca-icone{height:34px;width:auto}
.marca-texto{height:24px;width:auto}
.nav{display:flex;align-items:center;gap:30px;flex:1;justify-content:center}
.nav a{color:var(--branco);font-size:.92rem;font-weight:500;opacity:.92;
  display:inline-block;transition:transform .2s ease,opacity .2s}
.nav a:hover{opacity:1;transform:scale(1.1)}
.nav a.nav-cta{opacity:1;background:rgba(247,246,242,.16);border:1px solid rgba(247,246,242,.35);
  color:var(--branco);padding:9px 22px;margin-left:26px}
.nav a.nav-cta:hover{background:rgba(247,246,242,.28);transform:scale(1.05)}
.menu-btn{display:none;background:none;border:0;cursor:pointer;flex-direction:column;gap:5px;padding:6px}
.menu-btn span{width:24px;height:2px;background:var(--branco);transition:.3s}

/* ============ Hero com parallax ============ */
.hero{
  position:relative;
  display:flex;
  align-items:center;
  overflow:hidden;
  min-height:100vh;
  min-height:100dvh;
  background:#23367b; /* cor de segurança enquanto a imagem carrega */
}
/* camada de fundo, maior que a seção para permitir o deslocamento do parallax sem deixar vãos */
.hero-bg{
  position:absolute;
  top:-30%;
  left:0;
  width:100%;
  height:160%;
  background:url('../images/hero-fundo.jpg') center/cover no-repeat;
  will-change:transform;
  transform:translateY(0);
  z-index:0;
  animation:heroDriftBg 16s ease-in-out infinite;
}
@keyframes heroDriftBg{
  0%,100%{background-position:50% 50%}
  50%{background-position:54% 46%}
}
.hero-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(16,24,64,.42),rgba(16,24,64,.08) 55%,rgba(16,24,64,.18));
  z-index:1;
}
.hero-inner{position:relative;z-index:2;width:100%;padding-top:40px}
.hero-titulo{color:var(--branco);font-size:clamp(1.7rem,3.6vw,3.1rem);letter-spacing:.06em;
  max-width:12ch;margin-bottom:30px;text-shadow:0 2px 18px rgba(0,0,0,.25)}
.hero-acoes{display:flex;gap:14px;flex-wrap:wrap}
.hero-seta{position:absolute;left:50%;bottom:28px;transform:translateX(-50%);z-index:2;color:var(--branco);
  opacity:.85;animation:heroSetaBounce 1.8s ease-in-out infinite}
.hero-seta svg{width:26px;height:26px;display:block}
.hero-seta:hover{opacity:1}
@keyframes heroSetaBounce{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,10px)}}
@media (prefers-reduced-motion:reduce){.hero-seta{animation:none}}

@media (prefers-reduced-motion:reduce){
  .hero-bg{transform:none !important;transition:none;animation:none}
}

/* Seções claras */
.secao{padding:96px 0;position:relative;overflow:hidden}
.marca-dagua::before{content:attr(data-marca);position:absolute;font-family:var(--display);font-weight:800;
  font-size:46vw;line-height:.8;color:#eae8e1;left:-4%;top:6%;z-index:0;pointer-events:none;user-select:none}
.marca-dagua-fixa::before{content:attr(data-marca);position:fixed;font-family:var(--display);font-weight:800;
  font-size:clamp(7rem,30vw,30rem);line-height:.8;color:#eae8e1;left:50%;top:50%;transform:translate(-50%,-50%);
  white-space:nowrap;z-index:-1;pointer-events:none;user-select:none}
.secao>.wrap{position:relative;z-index:1}
.regua{height:3px;max-width:760px;margin:56px auto 0;border-radius:2px;
  background:linear-gradient(90deg,rgba(50,142,203,0),#328ecb 35%,#1e3d9c)}

/* Cards de indicadores */
.grade-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:56px}
.card{background:#fbfaf7;border-radius:var(--raio);padding:30px 26px}
.card-borda{border:1px solid rgba(42,91,164,.5)}
.card-icone{width:42px;height:42px;border-radius:50%;background:#eceae4;color:#5b6470;
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:18px}
.card-icone svg{width:20px;height:20px}
.card h3{font-size:1.05rem;color:#22262e;margin-bottom:10px;font-weight:700}
.card p{font-size:.9rem}
.saiba{display:inline-block;margin-top:16px;color:var(--azul-cta);font-size:.85rem;font-weight:600}
.saiba:hover span{margin-left:4px}
.saiba span{transition:margin .2s}

/* Serviços */
.servico{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-top:80px}
.servico.invertido .servico-texto{order:2}
.servico.invertido .servico-foto{order:1}
.servico h3{font-size:clamp(1.3rem,2.4vw,1.7rem);color:#22262e;font-weight:600;line-height:1.25;margin-bottom:14px}
.servico p{font-size:.92rem}
.lista{list-style:none;margin-top:18px}
.lista li{position:relative;padding-left:20px;margin-bottom:9px;font-size:.9rem;color:#33383f}
.lista li::before{content:'';position:absolute;left:0;top:.55em;width:7px;height:7px;border-radius:50%;background:var(--azul-cta)}
.servico-foto{border-radius:var(--raio);overflow:hidden;box-shadow:0 12px 34px rgba(20,30,60,.12)}
.servico-foto img{aspect-ratio:4/3;object-fit:cover;width:100%}

/* Metodologia (seção escura) */
.metodologia{background:var(--escuro);color:#d7d9da;padding:0 0 110px;position:relative;overflow:hidden}
.ondas{display:block;width:100%;height:170px;margin-bottom:40px}
.metodologia-titulo{font-family:var(--corpo);font-weight:600;color:#fff;font-size:clamp(1.5rem,3vw,2.1rem);line-height:1.3;margin-bottom:70px}
.linha-tempo{position:relative;max-width:900px}
.linha-tempo::before{content:'';position:absolute;left:50%;top:6px;bottom:6px;width:2px;transform:translateX(-50%);
  background:linear-gradient(180deg,#4db3ec,#328ecb 45%,#4a4a4a 80%,#3a3a3a)}
.passo{position:relative;width:50%;padding:0 46px 64px}
.passo.dir{left:50%}
.passo.dir .passo-corpo{text-align:left}
.passo.esq{left:0;text-align:right}
.ponto{position:absolute;top:4px;width:14px;height:14px;border-radius:50%;background:#fff;box-shadow:0 0 0 4px var(--escuro)}
.passo.dir .ponto{left:-7px}
.passo.esq .ponto{right:-7px}
.passo-num{font-family:var(--mono);font-size:.7rem;color:var(--azul-claro);letter-spacing:.2em}
.passo h3{color:#fff;font-weight:600;font-size:1.05rem;margin:6px 0 8px}
.passo p{font-size:.85rem;color:#a9adb0}

/* Sobre */
.sobre{background:var(--bg);padding:104px 0}
.sobre-grade{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,420px);
  gap:64px;align-items:center}
.sobre-texto h2{font-size:clamp(1.6rem,3vw,2.4rem);background:#ebe8e0;
  display:inline-block;padding:20px 26px;margin-bottom:22px}
.sobre-texto p{margin-bottom:14px;font-size:.95rem;max-width:48ch}
.sobre-foto{border-radius:18px;overflow:hidden;box-shadow:0 18px 40px rgba(20,30,60,.18)}
.sobre-foto img{aspect-ratio:4/5;object-fit:cover;width:100%}

/* Contato */
.contato{background:var(--azul-cta);color:#eaf0f8;padding:100px 0}
.pill{display:inline-block;background:#fff;color:var(--azul-cta);font-weight:600;font-size:1.05rem;
  padding:10px 34px;border-radius:999px;margin-bottom:26px}
.contato-titulo{font-family:var(--corpo);font-weight:600;color:#fff;font-size:clamp(1.7rem,3.4vw,2.5rem);line-height:1.25}
.contato-lead{max-width:600px;margin:18px auto 0;font-size:.92rem;color:#cfdcef}
.grade-contato{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;max-width:820px;margin:48px auto 0;text-align:left}
.card-contato{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.22);border-radius:var(--raio);
  padding:26px;transition:background .2s,transform .2s;display:block}
.card-contato:hover{background:rgba(255,255,255,.14);transform:translateY(-3px)}
.card-contato strong{display:block;color:#fff;font-size:1.08rem;margin-bottom:8px}
.card-contato p{font-size:.83rem;color:#cfdcef}
.olho-mono.claro{color:#a9c6e8}
.saiba.claro{color:#fff}
.ci{width:40px;height:40px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;margin-bottom:14px}
.ci svg{width:22px;height:22px}
.ci-zap{background:#25d366;color:#fff}
.ci-mail{background:#fff;color:var(--azul-cta)}
.local{margin-top:44px;font-size:.88rem;color:#dbe6f4;display:flex;gap:8px;align-items:center;justify-content:center}

/* Rodapé */
.rodape{background:var(--escuro);color:#9a9ea1;padding:56px 0 40px}
.rodape-topo{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.rodape .marca-icone{height:30px}
.rodape .marca-texto{height:22px}
.sociais{display:flex;gap:16px}
.sociais a{width:34px;height:34px;border:1px solid #45484a;border-radius:8px;display:inline-flex;
  align-items:center;justify-content:center;color:#9a9ea1;transition:color .2s,border-color .2s}
.sociais a:hover{color:#fff;border-color:#9a9ea1}
.sociais svg{width:16px;height:16px}
.rodape-base{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;
  margin-top:34px;padding-top:26px;border-top:1px solid #38393b;font-size:.82rem}
.rodape-base nav{display:flex;gap:22px}
.rodape-base a:hover{color:#fff}

/* Revelação ao rolar */
.revelar{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s ease}
.revelar.visivel{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .revelar{opacity:1;transform:none;transition:none}
}

/* Responsivo */
@media (max-width:960px){
  .grade-3{grid-template-columns:1fr;max-width:480px;margin-inline:auto}
  .servico{grid-template-columns:1fr;gap:30px}
  .servico.invertido .servico-texto{order:1}
  .servico.invertido .servico-foto{order:2}
  .sobre{padding:76px 0}
  .sobre-grade{grid-template-columns:1fr;gap:38px}
  .sobre-foto{max-width:360px;margin:0 auto}
  .grade-contato{grid-template-columns:1fr}
}
@media (max-width:760px){
  .nav{position:fixed;inset:0;background:rgba(22,33,60,.97);flex-direction:column;justify-content:center;
    gap:34px;font-size:1.1rem;transform:translateX(100%);transition:transform .3s}
  .nav a.nav-cta{margin-left:0}
  .nav.aberto{transform:none}
  .menu-btn{display:flex;z-index:60}
  .menu-btn.ativo span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .menu-btn.ativo span:nth-child(2){opacity:0}
  .menu-btn.ativo span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .hero{min-height:78vh}
  .hero-bg{background-position:68% center}
  .secao{padding:70px 0}
  .linha-tempo::before{left:10px}
  .passo,.passo.dir{width:100%;left:0;text-align:left;padding:0 0 48px 40px}
  .passo.esq{text-align:left}
  .passo.dir .ponto,.passo.esq .ponto{left:3px;right:auto}
}
@media (max-width:480px){
  .hero{min-height:82vh}
}