/* =========================================================
   RIE SERVIÇOS — ONEPAGE
   Paleta: azul-planta (blueprint) + laranja de sinalização
   ========================================================= */

:root{
  --ink: #12161C;
  --ink-soft: #1B222B;
  --charcoal: #23262B;
  --blueprint: #1F3A5F;
  --steel: #5B6472;
  --concrete: #EFEDE7;
  --paper: #F8F7F3;
  --line: #D8D4C9;
  --light-gray: #F5F4F0;
  --accent: #F5C518;
  --accent-dark: #DCAE0E;
  --ok: #2F855A;

  --font-head: "Montserrat", sans-serif;
  --font-body: "Montserrat", sans-serif;

  --container: 1180px;
  --radius: 6px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; margin:0; padding:0; }
h1,h2,h3,h4{ font-family: var(--font-head); margin:0; line-height:1.15; font-weight:600; }
p{ margin:0; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior:auto !important; }
}

.container{
  width:100%;
  max-width: var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ---------- Loader ---------- */
.loader{
  position:fixed; inset:0; z-index:9999;
  background: var(--ink);
  display:flex; align-items:center; justify-content:center;
  transition: opacity .6s var(--ease), visibility .6s var(--ease);
}
.loader-mark{
  font-family: var(--font-head);
  font-size: 15px;
  letter-spacing: .3em;
  color: var(--concrete);
  opacity:.6;
}
.loader.is-hidden{ opacity:0; visibility:hidden; pointer-events:none; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding: 15px 28px;
  border-radius: var(--radius);
  font-weight:600;
  font-size: 15px;
  border: 1px solid transparent;
  cursor:pointer;
  transition: transform .25s var(--ease), background-color .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
}
.btn-accent{ background: var(--accent); color: var(--ink); }
.btn-accent:hover{ background: var(--accent-dark); color: var(--ink); transform: translateY(-2px); }
.btn-ghost{ border-color: rgba(255,255,255,.35); color:#fff; }
.btn-ghost:hover{ border-color:#fff; background: rgba(255,255,255,.08); transform: translateY(-2px); }
.btn-small{ padding: 10px 18px; font-size: 14px; }
.btn-full{ width:100%; }

/* ---------- Header ---------- */
.header{
  position:fixed; top:0; left:0; right:0; z-index:500;
  padding: 32px 0;
  transition: background-color .35s var(--ease), padding .35s var(--ease), box-shadow .35s var(--ease);
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between; gap: 24px;
}
.brand{ display:flex; align-items:center; gap:8px; }
.header-logo-wrap{
  display:flex; align-items:center;
  height: 34px !important;
  max-height: 34px !important;
  overflow: hidden;
  transition: height .35s var(--ease), max-height .35s var(--ease);
}
.header.is-scrolled .header-logo-wrap{ height: 28px !important; max-height: 28px !important; }
.header-logo{
  height: 100% !important;
  width: auto !important;
  max-width: 160px !important;
  max-height: none !important;
  object-fit: contain;
  display: block;
}
.brand-fallback{ display:none; align-items:center; gap:8px; }
.brand-mark{
  font-family: var(--font-head); font-weight:700; font-size:16px;
  color: var(--accent);
  letter-spacing: .04em;
}
.brand-name{ font-family: var(--font-head); font-weight:600; font-size: 13.5px; color:#fff; }

.nav{ display:flex; gap: 30px; }
.nav-link{
  font-size: 14.5px; font-weight:500; color: rgba(255,255,255,.82);
  position:relative; padding: 4px 0;
}
.nav-link::after{
  content:""; position:absolute; left:0; right:100%; bottom:0; height:2px;
  background: var(--accent); transition: right .3s var(--ease);
}
.nav-link:hover{ color:#fff; }
.nav-link:hover::after{ right:0; }

.header-cta{ flex-shrink:0; }

.burger{
  display:none; flex-direction:column; justify-content:center; gap:5px;
  width: 38px; height: 38px; background:none; border:none; cursor:pointer;
}
.burger span{ display:block; height:2px; width:100%; background:#fff; border-radius:2px; transition: transform .3s var(--ease), opacity .3s var(--ease); }

.header.is-scrolled{
  background: rgba(18,22,28,.92);
  backdrop-filter: blur(10px);
  padding: 20px 0;
  box-shadow: 0 8px 24px rgba(0,0,0,.25);
}
.header:not(.is-scrolled){ background: linear-gradient(to bottom, rgba(0,0,0,.45), rgba(0,0,0,0)); }

/* ---------- Hero ---------- */
.hero{
  position:relative;
  min-height: 100svh;
  display:flex; flex-direction:column; justify-content:center;
  overflow:hidden;
  background: var(--ink);
}
.hero-media{ position:absolute; inset:0; z-index:0; }
.hero-video{ width:100%; height:100%; object-fit:cover; opacity:.55; }
.hero-overlay{
  position:absolute; inset:0;
  background: linear-gradient(180deg, rgba(18,22,28,.55) 0%, rgba(18,22,28,.75) 55%, var(--ink) 100%);
}
.hero-grid{
  position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(228,87,46,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(228,87,46,.08) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at 30% 40%, black, transparent 70%);
}

.hero-content{
  position:relative; z-index:2;
  padding-top: 160px;
  padding-bottom: 80px;
  max-width: 760px;
}
.eyebrow{
  font-size: 13.5px; font-weight:600; letter-spacing: .02em;
  color: var(--accent); margin: 0 0 16px;
}
.hero-title{ font-size: clamp(38px, 6vw, 68px); color:#fff; margin-bottom: 22px; }
.hero-title .line{ display:block; }
.hero-title em{ font-style: normal; color: var(--accent); }
.hero-sub{
  font-size: 17px; line-height:1.65; color: rgba(255,255,255,.8);
  max-width: 560px; margin-bottom: 34px;
}
.hero-actions{ display:flex; gap:16px; flex-wrap:wrap; }

.hero-stats{
  position:relative; z-index:2;
  border-top: 1px solid rgba(255,255,255,.12);
}
.hero-stats-inner{
  display:grid; grid-template-columns: repeat(4,1fr);
  padding: 28px 24px;
}
.stat{ display:flex; flex-direction:column; gap:4px; border-left: 1px solid rgba(255,255,255,.12); padding-left: 22px; }
.stat:first-child{ border-left:none; padding-left:0; }
.stat-number{ font-family: var(--font-head); font-size: 30px; font-weight:700; color:#fff; }
.stat-label{ font-size: 13px; color: rgba(255,255,255,.62); }

/* Reveal on load / scroll */
.reveal-up{ opacity:0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal-up.is-visible{ opacity:1; transform:none; }

/* ---------- Section shell ---------- */
.section{ padding: 110px 0; }
.section-head{ max-width: 620px; margin-bottom: 56px; }
.section-head h2{ font-size: clamp(26px, 3.4vw, 38px); }
.section-head .eyebrow{ color: var(--accent); }

/* ---------- Diferencial ---------- */
.diferencial{ background: var(--concrete); }
.diferencial-grid{
  display:grid; grid-template-columns: 1fr auto 1fr;
  gap: 40px; align-items: start;
}
.diferencial-col h3{ font-size: 20px; margin-bottom: 22px; }
.diferencial-problema h3{ color: var(--steel); }
.diferencial-solucao h3{ color: var(--ink); }
.check-list li{
  position:relative; padding-left: 30px; margin-bottom:16px;
  font-size: 15.5px; line-height:1.55; color: #3A3F46;
}
.check-list li::before{
  position:absolute; left:0; top:1px; font-weight:700; font-size:15px;
}
.check-list--x li::before{ content:"✕"; color: var(--steel); }
.check-list--ok li::before{ content:"✓"; color: var(--ok); }
.diferencial-divider{
  display:flex; align-items:center; justify-content:center;
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--ink); color: var(--accent);
  font-family: var(--font-head); font-weight:700; font-size:13px;
  align-self:center; letter-spacing:.05em;
}

/* ---------- Services ---------- */
.services-grid{
  display:grid; grid-template-columns: repeat(3, 1fr); gap: 2px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.06);
}
.service-card{
  background: var(--charcoal);
  padding: 40px 32px;
  transition: background-color .3s var(--ease), transform .3s var(--ease);
}
.service-icon{
  display:inline-flex; width: 48px; height: 48px;
  color: var(--accent); margin-bottom: 20px;
  transition: color .3s var(--ease);
}
.service-icon svg{ width:100%; height:100%; }
.service-card h3{ font-size: 18px; margin-bottom: 10px; color:#fff; transition: color .3s var(--ease); }
.service-card p{ font-size: 14.5px; line-height:1.6; color: rgba(255,255,255,.6); transition: color .3s var(--ease); }
.service-card:hover{ background: var(--light-gray); transform: translateY(-4px); }
.service-card:hover h3{ color: var(--ink); }
.service-card:hover p{ color: var(--steel); }
.service-card:hover .service-icon{ color: var(--accent-dark); }

/* ---------- Feature sections (Desmobilização / Impermeabilização) ---------- */
.feature--dark{ background: var(--ink); color:#fff; }
.feature--dark .feature-lead{ color: rgba(255,255,255,.72); }
.feature--dark .feature-list li{ color: rgba(255,255,255,.85); }
.feature--dark .feature-list li::before{ background: var(--accent); }

.feature-grid{
  display:grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items:center;
}
.feature-grid--reverse .feature-text{ order:2; }
.feature-grid--reverse .feature-media{ order:1; }

.feature-media-frame{
  width:100%; aspect-ratio: 4/3;
  border-radius: var(--radius);
  background-color: var(--blueprint);
  background-size: cover; background-position:center;
  border: 1px solid rgba(0,0,0,.08);
}
.feature-text h2{ font-size: clamp(24px, 3vw, 34px); margin-bottom: 18px; }
.feature-lead{ font-size: 16px; line-height:1.65; color: var(--steel); margin-bottom: 26px; max-width: 480px; }
.feature-list{ margin-bottom: 30px; }
.feature-list li{
  position:relative; padding-left: 26px; margin-bottom: 14px;
  font-size: 15px; line-height:1.55; color:#3A3F46;
}
.feature-list li::before{
  content:""; position:absolute; left:0; top:7px;
  width:8px; height:8px; border-radius:2px; background: var(--accent);
}

/* ---------- Processo ---------- */
.processo{ background: var(--concrete); }
.processo-grid{
  display:grid; grid-template-columns: repeat(4, 1fr); gap: 32px;
}
.processo-step{ border-top: 3px solid var(--accent); padding-top: 22px; }
.processo-num{ display:block; font-family: var(--font-head); font-size:14px; color: var(--steel); margin-bottom: 14px; letter-spacing:.05em; }
.processo-step h3{ font-size: 18px; margin-bottom: 10px; }
.processo-step p{ font-size: 14.5px; line-height:1.6; color: var(--steel); }

/* ---------- Sobre ---------- */
.sobre-grid{ display:grid; grid-template-columns: .85fr 1.15fr; gap: 64px; align-items:center; }
.sobre-text h2{ font-size: clamp(24px, 3vw, 34px); margin: 8px 0 20px; }
.sobre-text p{ font-size: 15.5px; line-height:1.7; color:#3A3F46; margin-bottom: 16px; }
.sobre-pilares{ display:grid; grid-template-columns: repeat(3,1fr); gap: 24px; margin-top: 30px; }
.pilar h4{ font-size: 15.5px; margin-bottom: 6px; }
.pilar p{ font-size: 13.5px; color: var(--steel); margin:0; }

/* ---------- Contato ---------- */
.contato{ background: var(--ink); color:#fff; }
.contato-grid{ display:grid; grid-template-columns: .9fr 1.1fr; gap: 64px; }
.contato h2{ font-size: clamp(24px, 3vw, 34px); margin: 8px 0 16px; color:#fff; }
.contato .feature-lead{ color: rgba(255,255,255,.7); }
.contato-list{ margin-top: 34px; }
.contato-list li{ display:flex; flex-direction:column; gap:4px; padding: 16px 0; border-top: 1px solid rgba(255,255,255,.12); }
.contato-label{ font-size: 12.5px; text-transform: none; color: var(--accent); font-weight:600; }
.contato-list a{ font-size: 16px; }
.contato-list a:hover{ color: var(--accent); }

.contato-form{ background: var(--ink-soft); border-radius: var(--radius); padding: 36px; border: 1px solid rgba(255,255,255,.08); }
.form-row{ margin-bottom: 18px; display:flex; flex-direction:column; gap:8px; }
.form-row--split{ display:grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-row--split > div{ display:flex; flex-direction:column; gap:8px; }
.contato-form label{ font-size: 13px; color: rgba(255,255,255,.65); }
.contato-form input, .contato-form select, .contato-form textarea{
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius);
  padding: 13px 14px;
  color:#fff;
  font-family: var(--font-body);
  font-size: 14.5px;
  transition: border-color .25s var(--ease), background-color .25s var(--ease);
}
.contato-form input::placeholder, .contato-form textarea::placeholder{ color: rgba(255,255,255,.35); }
.contato-form input:focus, .contato-form select:focus, .contato-form textarea:focus{
  outline: none; border-color: var(--accent); background: rgba(255,255,255,.08);
}
.contato-form select{ appearance: none; }
.contato-form textarea{ resize: vertical; }
.form-feedback{ margin-top: 14px; font-size: 14px; min-height: 20px; color: var(--accent); }
.form-feedback.is-success{ color: #6FCF97; }

/* ---------- Footer ---------- */
.footer{ background: var(--ink); border-top: 1px solid rgba(255,255,255,.1); padding: 34px 0; color: rgba(255,255,255,.7); }
.footer-inner{ display:flex; align-items:center; justify-content:space-between; gap: 24px; flex-wrap:wrap; }
.footer-brand{ display:flex; align-items:center; gap:8px; }
.footer-logo{ height: 30px !important; width: auto !important; max-width: 160px !important; object-fit: contain; }
.footer-brand-fallback{ display:none; align-items:center; gap:8px; }
.footer-brand .brand-name{ color: rgba(255,255,255,.7); }
.footer-nav{ display:flex; gap: 22px; flex-wrap:wrap; }
.footer-nav a{ font-size: 13.5px; }
.footer-nav a:hover{ color: var(--accent); }
.footer-copy{ font-size: 12.5px; color: rgba(255,255,255,.4); }

/* ---------- Back to top ---------- */
.to-top{
  position:fixed; right: 24px; bottom: 24px; z-index:400;
  width: 46px; height:46px; border-radius:50%;
  background: var(--accent); color: var(--ink); border:none;
  font-size: 18px; font-weight:700; cursor:pointer;
  display:flex; align-items:center; justify-content:center;
  opacity:0; visibility:hidden; transform: translateY(12px);
  transition: opacity .3s var(--ease), transform .3s var(--ease), visibility .3s var(--ease), background-color .3s var(--ease);
}
.to-top.is-visible{ opacity:1; visibility:visible; transform:none; }
.to-top:hover{ background: var(--accent-dark); }

/* ---------- Responsive ---------- */
@media (max-width: 980px){
  .nav{ display:none; }
  .header-cta{ display:none; }
  .burger{ display:flex; }

  .header.nav-open .nav{
    display:flex; flex-direction:column; gap:0;
    position:absolute; top:100%; left:0; right:0;
    background: var(--ink); padding: 8px 24px 20px;
  }
  .header.nav-open .nav-link{ padding: 12px 0; border-top: 1px solid rgba(255,255,255,.08); }
  .header.nav-open .burger span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
  .header.nav-open .burger span:nth-child(2){ opacity:0; }
  .header.nav-open .burger span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

  .hero-stats-inner{ grid-template-columns: repeat(2,1fr); row-gap: 22px; }
  .stat:nth-child(3){ border-left:none; padding-left:0; }

  .diferencial-grid{ grid-template-columns:1fr; }
  .diferencial-divider{ margin: 8px auto; }

  .services-grid{ grid-template-columns: repeat(2,1fr); }

  .feature-grid, .feature-grid--reverse{ grid-template-columns:1fr; }
  .feature-grid--reverse .feature-text, .feature-grid--reverse .feature-media{ order: unset; }

  .processo-grid{ grid-template-columns: repeat(2,1fr); }

  .sobre-grid{ grid-template-columns:1fr; }
  .sobre-pilares{ grid-template-columns:1fr; }

  .contato-grid{ grid-template-columns:1fr; }
}

@media (max-width: 560px){
  .section{ padding: 76px 0; }
  .services-grid{ grid-template-columns: 1fr; }
  .processo-grid{ grid-template-columns: 1fr; }
  .form-row--split{ grid-template-columns:1fr; }
  .hero-stats-inner{ grid-template-columns: repeat(2,1fr); }
}