/* ==========================================================================
   GESTEC ENGENHARIA — Design tokens
   ========================================================================== */
:root{
  --navy-950:#061A2E;
  --navy-900:#0A2C4E;
  --navy-800:#0F3A63;
  --navy-700:#154B7E;
  --navy-600:#1F5F9C;
  --blue-400:#4C86BE;
  --blue-100:#DCE8F4;
  --white:#FFFFFF;
  --paper:#F5F7FA;
  --paper-line:#E4EAF1;
  --ink:#0E1A28;
  --ink-soft:#4A5A6B;
  --amber:#E3A11C;

  --font-display:'Space Grotesk', 'Segoe UI', sans-serif;
  --font-body:'IBM Plex Sans', 'Segoe UI', sans-serif;
  --font-mono:'IBM Plex Mono', monospace;

  --container:1180px;
  --radius-sm:6px;
  --radius-md:12px;
  --radius-lg:22px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}

/* ==========================================================================
   Custom scrollbar
   ========================================================================== */
html{
  scrollbar-width:thin;
  scrollbar-color:var(--navy-700) var(--paper);
}
::-webkit-scrollbar{
  width:12px;
  height:12px;
}
::-webkit-scrollbar-track{
  background:var(--paper);
}
::-webkit-scrollbar-thumb{
  background-color:var(--navy-700);
  background-image:linear-gradient(180deg, var(--navy-600) 0%, var(--navy-900) 100%);
  border-radius:999px;
  border:3px solid var(--paper);
  background-clip:padding-box;
}
::-webkit-scrollbar-thumb:hover{
  background-image:linear-gradient(180deg, var(--amber) 0%, var(--navy-800) 55%);
}
::-webkit-scrollbar-corner{background:var(--paper);}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important;}
}

body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
  line-height:1.55;
}

img{max-width:100%; display:block;}
a{color:inherit; text-decoration:none;}
button{font-family:inherit;}

.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 28px;
}

.eyebrow{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--navy-700);
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
  font-weight:500;
}
.eyebrow::before{
  content:"";
  width:22px;
  height:1.5px;
  background:var(--amber);
  display:inline-block;
}

h1,h2,h3,h4{
  font-family:var(--font-display);
  color:var(--navy-950);
  margin:0;
  letter-spacing:-.01em;
}

section{padding:96px 0;}
@media (max-width:720px){ section{padding:64px 0;} }

/* ==========================================================================
   Header
   ========================================================================== */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease, box-shadow .25s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--paper-line);
  box-shadow:0 4px 24px rgba(10,44,78,.06);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:76px;
  gap:24px;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  font-family:var(--font-display);
  font-weight:600;
  font-size:17px;
  color:var(--navy-950);
  white-space:nowrap;
}
.brand img{height:38px; width:38px;}
.brand .brand-sub{
  display:block;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.12em;
  color:var(--ink-soft);
  font-weight:400;
  text-transform:uppercase;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:34px;
}
.main-nav a{
  font-size:14.5px;
  color:var(--ink);
  font-weight:500;
  position:relative;
  padding:4px 0;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:0; bottom:-2px;
  width:0; height:2px;
  background:var(--amber);
  transition:width .2s ease;
}
.main-nav a:hover::after{width:100%;}

.header-actions{display:flex; align-items:center; gap:18px;}
.nav-toggle{
  display:none;
  background:none;
  border:none;
  cursor:pointer;
  padding:6px;
}
.nav-toggle svg{width:26px; height:26px; color:var(--navy-950);}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:14px 26px;
  border-radius:999px;
  font-weight:600;
  font-size:14.5px;
  cursor:pointer;
  border:1.5px solid transparent;
  transition:transform .15s ease, box-shadow .15s ease, background .2s ease, color .2s ease, border-color .2s ease;
  white-space:nowrap;
}
.btn svg{width:18px; height:18px; flex-shrink:0;}
.btn-primary{
  background:var(--navy-900);
  color:var(--white);
  box-shadow:0 8px 20px rgba(10,44,78,.22);
}
.btn-primary:hover{
  background:var(--navy-800);
  transform:translateY(-1px);
  box-shadow:0 12px 26px rgba(10,44,78,.28);
}
.btn-outline{
  background:transparent;
  color:var(--navy-900);
  border-color:var(--navy-900);
}
.btn-outline:hover{
  background:var(--navy-900);
  color:var(--white);
}
.btn-ghost-light{
  background:rgba(255,255,255,.08);
  color:var(--white);
  border-color:rgba(255,255,255,.35);
}
.btn-ghost-light:hover{
  background:rgba(255,255,255,.16);
  border-color:rgba(255,255,255,.6);
}
.btn-lg{padding:19px 36px; font-size:16px;}
.btn-sm{padding:10px 18px; font-size:13.5px;}
.btn:focus-visible{outline:3px solid var(--amber); outline-offset:3px;}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero{
  position:relative;
  padding:76px 0 40px;
  overflow:hidden;
  background:
    linear-gradient(180deg, var(--paper) 0%, var(--white) 78%);
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(var(--paper-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--paper-line) 1px, transparent 1px);
  background-size:42px 42px;
  mask-image:linear-gradient(180deg, rgba(0,0,0,.55), transparent 72%);
  -webkit-mask-image:linear-gradient(180deg, rgba(0,0,0,.55), transparent 72%);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:1.02fr .98fr;
  gap:56px;
  align-items:center;
}
.hero-copy h1{
  font-size:clamp(32px, 4vw, 50px);
  line-height:1.08;
  margin-bottom:22px;
}
.hero-copy h1 em{
  font-style:normal;
  color:var(--navy-700);
  position:relative;
  white-space:nowrap;
}
.hero-copy p.lead{
  font-size:17.5px;
  color:var(--ink-soft);
  max-width:52ch;
  margin-bottom:34px;
}
.hero-cta-row{
  display:flex;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  margin-bottom:30px;
}
.hero-trust{
  display:flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12.5px;
  color:var(--ink-soft);
}
.hero-trust svg{width:16px; height:16px; color:var(--navy-700); flex-shrink:0;}

.hero-art{
  position:relative;
}
.hero-art .art-frame{
  position:relative;
  background:var(--navy-950);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:0 30px 60px -18px rgba(6,26,46,.45);
}

/* ==========================================================================
   Media frame — image slot with placeholder + parallax hook
   ========================================================================== */
.media-frame{
  position:relative;
  width:100%;
  aspect-ratio:520 / 380;
  overflow:hidden;
  background:var(--navy-950);
}
.media-frame__img{
  position:absolute;
  left:0;
  top:-12%;
  width:100%;
  height:124%;
  object-fit:cover;
  display:block;
  will-change:transform;
}
.media-frame__img[src=""]{display:none;}
.media-frame__placeholder{
  position:absolute;
  inset:0;
  display:none;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  text-align:center;
  padding:24px;
  border:1.5px dashed rgba(255,255,255,.22);
  margin:14px;
  border-radius:calc(var(--radius-lg) - 8px);
}
.media-frame__img[src=""] + .media-frame__placeholder{display:flex;}
.media-frame__placeholder svg{width:34px; height:34px; color:rgba(255,255,255,.35);}
.media-frame__placeholder span{
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1.6;
  color:rgba(255,255,255,.45);
}
.media-frame__placeholder code{
  color:var(--blue-400);
  background:rgba(255,255,255,.06);
  padding:1px 6px;
  border-radius:4px;
}

.loteamento-plot .media-frame{
  aspect-ratio:460 / 420;
  border-radius:var(--radius-md);
}
.loteamento-plot .media-frame__placeholder{
  border-color:rgba(255,255,255,.16);
}

/* ==========================================================================
   Section headers
   ========================================================================== */
.section-head{
  max-width:640px;
  margin-bottom:52px;
}
.section-head.center{margin-left:auto; margin-right:auto; text-align:center;}
.section-head h2{
  font-size:clamp(26px, 3vw, 36px);
  line-height:1.16;
  margin-bottom:16px;
}
.section-head p{
  color:var(--ink-soft);
  font-size:16px;
  max-width:56ch;
}
.section-head.center p{margin-left:auto; margin-right:auto;}

/* ==========================================================================
   Services grid
   ========================================================================== */
.services{background:var(--paper);}
.services-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:22px;
}
.service-card{
  background:var(--white);
  border:1px solid var(--paper-line);
  border-radius:var(--radius-md);
  padding:30px 26px;
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.service-card:hover{
  transform:translateY(-4px);
  box-shadow:0 18px 36px -14px rgba(10,44,78,.18);
  border-color:var(--navy-700);
}
.service-icon{
  width:46px;
  height:46px;
  border-radius:10px;
  background:var(--navy-950);
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:20px;
}
.service-icon svg{width:23px; height:23px; color:var(--white);}
.service-card h3{
  font-size:18.5px;
  margin-bottom:10px;
  font-weight:600;
}
.service-card p{
  font-size:14.5px;
  color:var(--ink-soft);
  margin:0;
}
.service-index{
  font-family:var(--font-mono);
  font-size:11.5px;
  color:var(--blue-400);
  letter-spacing:.08em;
  display:block;
  margin-bottom:12px;
}

/* ==========================================================================
   Loteamento — signature section
   ========================================================================== */
.loteamento{
  position:relative;
  background:var(--navy-950);
  color:var(--white);
  overflow:hidden;
}
.loteamento::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size:38px 38px;
  pointer-events:none;
}
.loteamento .container{position:relative;}
.loteamento-grid{
  display:grid;
  grid-template-columns:1fr .92fr;
  gap:64px;
  align-items:center;
}
.loteamento .eyebrow{color:var(--blue-100);}
.loteamento .section-head h2{color:var(--white);}
.loteamento .section-head p{color:rgba(255,255,255,.72);}
.loteamento-checklist{
  list-style:none;
  margin:34px 0 36px;
  padding:0;
  display:grid;
  gap:16px;
}
.loteamento-checklist li{
  display:flex;
  gap:14px;
  align-items:flex-start;
  font-size:15px;
  color:rgba(255,255,255,.88);
}
.loteamento-checklist svg{
  width:20px; height:20px;
  color:var(--amber);
  flex-shrink:0;
  margin-top:1px;
}
.loteamento-checklist b{color:var(--white); font-weight:600;}

.loteamento-plot{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-lg);
  padding:24px;
}
.loteamento-plot .plot-label{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.12em;
  color:rgba(255,255,255,.5);
  margin-bottom:14px;
  display:block;
}


/* ==========================================================================
   Process
   ========================================================================== */
.process-list{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:0;
  border-top:1px solid var(--paper-line);
}
.process-step{
  padding:30px 24px 30px 0;
  border-right:1px solid var(--paper-line);
  position:relative;
}
.process-step:last-child{border-right:none;}
.process-step .step-num{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--blue-400);
  display:block;
  margin-bottom:14px;
}
.process-step h3{
  font-size:17px;
  margin-bottom:10px;
  font-weight:600;
}
.process-step p{
  font-size:14px;
  color:var(--ink-soft);
  margin:0;
}

/* ==========================================================================
   Why us
   ========================================================================== */
.why{background:var(--paper);}
.why-grid{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:22px;
}
.why-card{
  background:var(--white);
  border:1px solid var(--paper-line);
  border-radius:var(--radius-md);
  padding:26px 22px;
}
.why-card svg{width:26px; height:26px; color:var(--navy-800); margin-bottom:16px;}
.why-card h3{font-size:16px; margin-bottom:8px; font-weight:600;}
.why-card p{font-size:13.5px; color:var(--ink-soft); margin:0;}

/* ==========================================================================
   Final CTA
   ========================================================================== */
.cta-final{
  background:var(--navy-900);
  background:linear-gradient(135deg, var(--navy-900) 0%, var(--navy-950) 100%);
  color:var(--white);
  text-align:center;
}
.cta-final h2{
  color:var(--white);
  font-size:clamp(26px, 3.4vw, 40px);
  margin-bottom:16px;
  max-width:20ch;
  margin-left:auto; margin-right:auto;
}
.cta-final p{
  color:rgba(255,255,255,.72);
  max-width:52ch;
  margin:0 auto 34px;
  font-size:16px;
}
.cta-final .btn-row{
  display:flex;
  justify-content:center;
  gap:16px;
  flex-wrap:wrap;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer{
  background:var(--navy-950);
  color:rgba(255,255,255,.7);
  padding:64px 0 28px;
  font-size:14px;
}
.footer-top{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:12px;
  color:var(--white);
  font-family:var(--font-display);
  font-weight:600;
  font-size:16px;
  margin-bottom:16px;
}
.footer-brand img{height:32px; width:32px;}
.footer-col h4{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:rgba(255,255,255,.5);
  margin-bottom:18px;
  font-weight:500;
}
.footer-col ul{list-style:none; margin:0; padding:0; display:grid; gap:11px;}
.footer-col a:hover{color:var(--white);}
.footer-contact-item{display:flex; gap:10px; align-items:flex-start;}
.footer-contact-item svg{width:16px; height:16px; margin-top:2px; color:var(--blue-400); flex-shrink:0;}
.footer-bottom{
  padding-top:26px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:12px;
  font-size:12.5px;
  color:rgba(255,255,255,.45);
}

/* ==========================================================================
   WhatsApp floating button
   ========================================================================== */
.wa-float{
  position:fixed;
  right:22px;
  bottom:22px;
  z-index:200;
  width:58px; height:58px;
  border-radius:50%;
  background:var(--navy-900);
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 12px 28px rgba(6,26,46,.35);
  transition:transform .2s ease, background .2s ease;
}
.wa-float:hover{transform:scale(1.06); background:var(--navy-800);}
.wa-float svg{width:27px; height:27px; color:var(--white);}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr;}
  .hero-art{order:-1;}
  .services-grid{grid-template-columns:repeat(2,1fr);}
  .loteamento-grid{grid-template-columns:1fr; gap:40px;}
  .process-list{grid-template-columns:repeat(2,1fr);}
  .process-step{border-right:none; border-bottom:1px solid var(--paper-line); padding:24px 0;}
  .why-grid{grid-template-columns:repeat(2,1fr);}
  .footer-top{grid-template-columns:1fr 1fr;}
}
@media (max-width:720px){
  .main-nav{
    position:fixed;
    top:76px; left:0; right:0;
    background:var(--white);
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    padding:8px 28px 20px;
    border-bottom:1px solid var(--paper-line);
    box-shadow:0 16px 24px -12px rgba(10,44,78,.12);
    transform:translateY(-8px);
    opacity:0;
    pointer-events:none;
    transition:opacity .2s ease, transform .2s ease;
  }
  .main-nav.is-open{
    opacity:1; transform:translateY(0); pointer-events:auto;
  }
  .main-nav a{padding:12px 0; width:100%; border-bottom:1px solid var(--paper-line);}
  .main-nav a:last-child{border-bottom:none;}
  .nav-toggle{display:block;}
  .header-actions .btn-sm{display:none;}
  .services-grid{grid-template-columns:1fr;}
  .process-list{grid-template-columns:1fr;}
  .why-grid{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr; gap:32px;}
  .hero-cta-row{flex-direction:column; align-items:stretch;}
  .hero-cta-row .btn{width:100%;}
}

/* ==========================================================================
   Reveal on scroll
   ========================================================================== */
.reveal{opacity:0; transform:translateY(18px); transition:opacity .6s ease, transform .6s ease;}
.reveal.is-visible{opacity:1; transform:translateY(0);}

/* ==========================================================================
   Thank-you page
   ========================================================================== */
.ty-page{
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--navy-950);
  padding:32px;
  position:relative;
  overflow:hidden;
}
.ty-page::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size:38px 38px;
}
.ty-card{
  position:relative;
  max-width:520px;
  width:100%;
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-lg);
  padding:52px 40px;
  text-align:center;
  color:var(--white);
}
.ty-logo{display:flex; align-items:center; justify-content:center; gap:10px; margin-bottom:30px;}
.ty-logo img{height:36px; width:36px;}
.ty-logo span{font-family:var(--font-display); font-weight:600; font-size:16px;}
.ty-icon{
  width:64px; height:64px;
  border-radius:50%;
  background:rgba(255,255,255,.08);
  display:flex; align-items:center; justify-content:center;
  margin:0 auto 26px;
}
.ty-icon svg{width:30px; height:30px; color:var(--amber);}
.ty-card h1{
  color:var(--white);
  font-size:26px;
  margin-bottom:14px;
}
.ty-card p{
  color:rgba(255,255,255,.7);
  font-size:15px;
  margin:0 0 32px;
  max-width:38ch;
  margin-left:auto; margin-right:auto;
}
.ty-card .btn{width:100%;}
.ty-back{
  display:inline-block;
  margin-top:22px;
  font-size:13.5px;
  color:rgba(255,255,255,.5);
}
.ty-back:hover{color:var(--white);}