/* ==========================================================================
   C1 SIGN — Landing Page
   Tokens: laranja #FA710F · chumbo #1A1A1A / #6E6E6E · offwhite #F5F3F0
   Display: Sora · Corpo: Inter · Técnico/spec: JetBrains Mono
   ========================================================================== */

:root{
  --orange:      #FA710F;
  --orange-dark: #D9600A;
  --ink:         #17140F;
  --charcoal:    #221F1C;
  --gray:        #6E6E6E;
  --gray-light:  #9C9995;
  --offwhite:    #F5F3EF;
  --white:       #FEFEFE;
  --line:        rgba(23,20,15,.10);
  --line-light:  rgba(255,255,255,.16);

  --font-display: 'Sora', 'Segoe UI', system-ui, sans-serif;
  --font-body:    'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;

  --wrap: 1220px;
  --radius: 2px;
  --ease: cubic-bezier(.2,.7,.2,1);
}

*, *::before, *::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *, *::before, *::after{ animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; scroll-behavior:auto !important; }
}

body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

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-display); margin:0; line-height:1.08; letter-spacing:-.01em; color:var(--ink); }
p{ margin:0; }

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

/* ---------- Elemento assinatura: triângulo da marca ---------- */
.tri{
  display:inline-block;
  width:0; height:0;
  border-top:6px solid transparent;
  border-bottom:6px solid transparent;
  border-left:9px solid var(--orange);
  flex:none;
}

/* ---------- Tag / eyebrow estilo placa de sinalização ---------- */
.tag{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--font-mono); font-size:11.5px; font-weight:600;
  letter-spacing:.1em; text-transform:uppercase;
  color:var(--ink); margin-bottom:18px;
  background:var(--white);
  border:1px solid var(--line);
  padding:6px 12px 6px 10px;
}
.tag--light{
  color:var(--white);
  background:rgba(255,255,255,.1);
  border-color:rgba(255,255,255,.25);
  backdrop-filter:blur(2px);
}

/* ---------- Botões ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  font-family:var(--font-display); font-weight:700;
  border-radius:var(--radius);
  border:2px solid transparent;
  cursor:pointer; white-space:nowrap;
  transition:transform .18s var(--ease), background .18s var(--ease), border-color .18s var(--ease), color .18s var(--ease);
}
.btn--sm{ padding:9px 18px; font-size:14px; }
.btn--lg{ padding:16px 30px; font-size:16px; }
.btn--orange{ background:var(--orange); color:var(--white); }
.btn--orange:hover{ background:var(--orange-dark); transform:translateY(-2px); }
.btn--ghost{ background:transparent; border-color:currentColor; color:inherit; }
.btn--ghost:hover{ background:rgba(255,255,255,.08); transform:translateY(-2px); }

/* ==========================================================================
   HEADER
   ========================================================================== */
.header{
  position:sticky; top:0; z-index:50;
  background:transparent;
  transition:background .25s var(--ease), box-shadow .25s var(--ease);
}
.header.is-scrolled{
  background:rgba(254,254,254,.96);
  backdrop-filter:blur(6px);
  box-shadow:0 1px 0 var(--line);
}
.header__inner{
  display:grid; grid-template-columns:auto 1fr auto; align-items:center; gap:24px;
  padding-block:14px;
}
.brand{ position:relative; display:block; width:150px; height:56px; justify-self:start; }
.brand__logo{ position:absolute; inset:0; height:56px; width:auto; transition:opacity .25s var(--ease); }
.brand__logo--color{ opacity:0; }
.header.is-scrolled .brand__logo--white{ opacity:0; }
.header.is-scrolled .brand__logo--color{ opacity:1; }
.nav{ display:flex; gap:28px; justify-self:center; }
.header__right{ display:flex; align-items:center; gap:18px; justify-self:end; }
.nav a{
  font-family:var(--font-display); font-weight:600; font-size:14.5px;
  color:var(--ink); position:relative; padding-block:4px;
}
.header:not(.is-scrolled) .nav a{ color:var(--white); text-shadow:0 1px 3px rgba(0,0,0,.35); }
.nav a::after{
  content:""; position:absolute; left:0; right:100%; bottom:-2px; height:2px;
  background:var(--orange); transition:right .22s var(--ease);
}
.nav a:hover::after{ right:0; }

.header__actions{ display:flex; align-items:center; gap:18px; }
.header__phone{
  font-family:var(--font-mono); font-size:13.5px; font-weight:500;
  color:var(--ink);
}
.header:not(.is-scrolled) .header__phone{ color:var(--white); }

.nav-toggle{
  display:none; flex-direction:column; justify-content:center; gap:5px;
  width:38px; height:38px; background:none; border:0; cursor:pointer; padding:0;
}
.nav-toggle span{
  height:2px; width:100%; background:var(--ink); transition:transform .2s var(--ease), opacity .2s var(--ease);
}
.header:not(.is-scrolled) .nav-toggle span{ background:var(--white); }
.nav-toggle.is-open span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2){ opacity:0; }
.nav-toggle.is-open span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }
.header.is-scrolled .nav-toggle span{ background:var(--ink); }

/* ==========================================================================
   HERO
   ========================================================================== */
.hero{
  position:relative;
  height:max(100vh, 710px);
  display:flex; align-items:flex-start;
  margin-top:-84px; padding-top:84px;
  overflow:hidden;
  color:var(--white);
}
.hero__bg{
  position:absolute; inset:0; width:100%; height:100%; object-fit:cover;
  z-index:0;
}
.hero__overlay{
  position:absolute; inset:0; z-index:1;
  background:
    linear-gradient(180deg, rgba(15,13,10,.82) 0%, rgba(15,13,10,.55) 32%, rgba(15,13,10,.22) 58%, rgba(15,13,10,.4) 100%);
}
.hero__content{ position:relative; z-index:2; padding-block:112px 140px; }
.hero h1{
  font-size:clamp(1.9rem, 3.4vw, 2.7rem);
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--white);
  max-width:460px;
  margin-bottom:18px;
}
.hero__subline{
  display:block;
  font-size:clamp(2.1rem, 4.6vw, 3.2rem);
  font-weight:700;
  color:rgba(255,255,255,.92);
  margin-top:14px;
  letter-spacing:-.01em;
}
@media (max-width:640px){
  .hero__subline{ white-space:normal; }
}
.hero__lead{
  font-size:clamp(1rem, 1.6vw, 1.18rem);
  line-height:1.6;
  color:rgba(255,255,255,.86);
  max-width:640px;
  margin-bottom:34px;
}
.hero .hero__lead{ font-size:1rem; max-width:420px; margin-bottom:28px; }
.hero__actions{ display:flex; flex-wrap:wrap; gap:14px; }

/* ---------- Etiqueta de placa no canto do hero (assinatura visual) ---------- */
.hero::before{
  content:"C1 SIGN · HORTOLÂNDIA / SP";
  position:absolute; z-index:2; top:0; right:48px;
  writing-mode:vertical-rl;
  font-family:var(--font-mono); font-size:11px; letter-spacing:.14em;
  color:rgba(255,255,255,.55);
  padding:18px 0 22px;
  border-left:1px solid rgba(255,255,255,.25);
  padding-left:14px;
}
@media (max-width:760px){ .hero::before{ display:none; } }

/* ==========================================================================
   FAIXA DE CLIENTES
   ========================================================================== */
.clients-strip{
  position:absolute; left:0; right:0; bottom:0; z-index:3;
  background:rgba(34,31,28,.88);
  backdrop-filter:blur(3px);
  padding-block:24px;
  overflow:hidden;
}
.clients-strip__label{
  font-family:var(--font-mono); font-size:12px; letter-spacing:.08em; text-transform:uppercase;
  color:var(--gray-light); margin-bottom:18px;
}
.clients-strip__logos{
  display:flex; flex-wrap:nowrap; align-items:center; justify-content:space-between; gap:28px;
}
.clients-strip__logos img{
  filter:brightness(0) invert(1); opacity:.85;
  transition:opacity .2s var(--ease);
  max-width:110px;
}
.clients-strip__logos img:hover{ opacity:1; }
.clients-strip__text{
  font-family:var(--font-display); font-weight:700; font-size:16px;
  color:rgba(255,255,255,.6);
}

/* ==========================================================================
   SEÇÕES GERAIS
   ========================================================================== */
.section{ padding-block:108px; }
.section--offwhite{ background:var(--offwhite); }
.section__head{ max-width:680px; margin-bottom:72px; }
.section__head h2{ font-size:clamp(1.7rem, 3.4vw, 2.4rem); font-weight:800; }

/* ---------- Blocos assimétricos (split) ---------- */
.split{
  display:grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap:56px;
  align-items:center;
  padding-block:64px;
  border-top:1px solid var(--line);
}
.split:first-of-type{ border-top:0; }
.split--reverse{ direction:rtl; }
.split--reverse > *{ direction:ltr; }
.split--media-sm{ grid-template-columns: 0.72fr 1.28fr; }
.split--media-sm .media-main{ aspect-ratio:2744/2875; max-width:408px; height:auto; margin-inline:auto; }
.split--airy{ padding-block:96px; gap:80px; }
.media-card{
  border-radius:18px;
  box-shadow:0 24px 60px -20px rgba(23,20,15,.35);
}

.split__text h2{ font-size:clamp(1.7rem, 3.2vw, 2.35rem); font-weight:800; margin-bottom:18px; }
.split__text h3{ font-size:clamp(1.3rem, 2.4vw, 1.7rem); font-weight:800; margin-bottom:10px; }
.lead-p{ font-size:1.05rem; line-height:1.7; color:#3b362f; margin-bottom:28px; max-width:52ch; }
.split__text > p{ font-size:1rem; line-height:1.75; color:var(--gray); max-width:56ch; }

.specline{
  font-family:var(--font-mono); font-size:12.5px; color:var(--orange-dark);
  letter-spacing:.02em; margin-bottom:14px;
  padding-bottom:12px; border-bottom:1px solid var(--line);
}

/* Lista de diferenciais estilo "placa técnica" */
.spec-list{ display:flex; flex-direction:column; gap:30px; }
.spec-list li{ padding-left:20px; border-left:2px solid var(--orange); }
.spec-list__label{
  display:block; font-family:var(--font-display); font-weight:700; font-size:1.02rem;
  margin-bottom:4px; color:var(--ink);
}
.spec-list p{ font-size:.94rem; line-height:1.65; color:var(--gray); max-width:52ch; }

/* Mídia dos blocos */
.split__media--single img{
  width:100%; height:100%; object-fit:cover; aspect-ratio:5/4.4;
  border-radius:var(--radius);
}
.split__media{ position:relative; }
.media-main{ width:100%; height:auto; aspect-ratio:6/5.3; object-fit:cover; }
.media-duo{ display:grid; grid-template-columns:1fr 1fr; gap:14px; margin-top:14px; }
.media-duo img{ width:100%; aspect-ratio:4/3.4; object-fit:cover; }

/* ==========================================================================
   GALERIA / PORTFÓLIO
   ========================================================================== */
.section--portfolio{ padding-block:88px 108px; }

.filter-tabs{
  display:flex; flex-wrap:wrap; gap:10px;
  margin-bottom:36px;
}
.filter-tabs__btn{
  font-family:var(--font-mono); font-size:12.5px; font-weight:600; letter-spacing:.04em;
  text-transform:uppercase;
  padding:10px 18px;
  background:var(--white); color:var(--gray);
  border:1px solid var(--line);
  cursor:pointer;
  transition:background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}
.filter-tabs__btn:hover{ border-color:var(--orange); color:var(--ink); }
.filter-tabs__btn.is-active{ background:var(--ink); border-color:var(--ink); color:var(--white); }

.gallery{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:12px;
  margin-bottom:72px;
}
.gallery li{
  position:relative; overflow:hidden; aspect-ratio:4/3.3; background:var(--offwhite);
}
.gallery img{
  width:100%; height:100%; object-fit:cover;
  transition:transform .5s var(--ease);
}
.gallery li:hover img{ transform:scale(1.06); }
.gallery span{
  position:absolute; left:0; right:0; bottom:0;
  padding:22px 14px 12px;
  font-family:var(--font-mono); font-size:12px; color:var(--white);
  background:linear-gradient(0deg, rgba(0,0,0,.72), transparent);
}
.gallery li.is-hidden{ display:none; }

/* ---------- Depoimentos ---------- */
.testimonials{
  display:grid; grid-template-columns:repeat(4, 1fr); gap:24px;
  border-top:1px solid var(--line); padding-top:48px;
}
.testimonials blockquote{ margin:0; }
.testimonials p{
  font-family:var(--font-display); font-size:1.02rem; font-weight:600;
  line-height:1.45; color:var(--ink); margin-bottom:14px;
}
.testimonials cite{
  font-family:var(--font-mono); font-style:normal; font-size:12.5px; color:var(--gray);
}

/* ==========================================================================
   CTA FINAL
   ========================================================================== */
.cta-final{
  background:var(--ink);
  color:var(--white);
  padding-block:110px;
  text-align:left;
  position:relative;
}
.cta-final::before{
  content:"";
  position:absolute; inset:0;
  background:
    radial-gradient(60% 90% at 85% 0%, rgba(250,113,15,.16), transparent 60%);
  pointer-events:none;
}
.cta-final__inner{ position:relative; max-width:720px; }
.cta-final h2{
  font-size:clamp(2rem, 4.4vw, 3.1rem); font-weight:800; color:var(--white);
  margin-bottom:18px;
}
.cta-final .hero__lead{ color:rgba(255,255,255,.72); }
.cta-final__addr{
  margin-top:28px; font-family:var(--font-mono); font-size:13px; color:var(--gray-light);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer{ background:var(--charcoal); color:rgba(255,255,255,.82); }
.footer__inner{
  display:grid; grid-template-columns:1.6fr 1fr 1fr 1fr; gap:40px;
  padding-block:64px 40px;
}
.footer__brand img{ height:64px; width:auto; margin-bottom:16px; }
.footer__brand p{ font-size:.9rem; line-height:1.65; color:rgba(255,255,255,.55); max-width:34ch; }
.footer__col{ display:flex; flex-direction:column; gap:12px; }
.footer__col h4{
  font-family:var(--font-mono); font-size:12px; letter-spacing:.08em; text-transform:uppercase;
  color:rgba(255,255,255,.45); margin-bottom:4px; font-weight:600;
}
.footer__col a{ font-size:.92rem; color:rgba(255,255,255,.78); transition:color .18s; }
.footer__col a:hover{ color:var(--orange); }
.footer__col p{ font-size:.88rem; color:rgba(255,255,255,.55); line-height:1.6; }

.footer__bottom{
  border-top:1px solid var(--line-light);
  padding-block:22px;
  display:flex; flex-wrap:wrap; gap:14px; justify-content:space-between; align-items:center;
  font-size:.82rem; color:rgba(255,255,255,.45);
}
.footer__policies{ display:flex; gap:22px; }
.footer__policies a:hover{ color:var(--orange); }

/* ==========================================================================
   BOTÃO FLUTUANTE WHATSAPP
   ========================================================================== */
.wa-float{
  position:fixed; right:20px; bottom:20px; z-index:60;
  width:56px; height:56px; border-radius:50%;
  background:#25D366; color:var(--white);
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 6px 20px rgba(0,0,0,.25);
  transition:transform .2s var(--ease);
}
.wa-float:hover{ transform:scale(1.07); }

/* ==========================================================================
   REVEAL ON SCROLL
   ========================================================================== */
.reveal{ opacity:0; transform:translateY(18px); transition:opacity .6s var(--ease), transform .6s var(--ease); }
.reveal--in{ opacity:1; transform:translateY(0); }

/* ==========================================================================
   RESPONSIVO
   ========================================================================== */
@media (max-width: 980px){
  .split, .split--reverse{ grid-template-columns:1fr; direction:ltr; gap:32px; }
  .footer__inner{ grid-template-columns:1fr 1fr; }
  .gallery{ grid-template-columns:repeat(3,1fr); }
  .testimonials{ grid-template-columns:repeat(2,1fr); }
}

@media (max-width: 760px){
  .nav{
    position:fixed; inset:0 0 0 auto; top:0; height:100vh; width:min(78vw, 320px);
    background:var(--white); flex-direction:column; padding:100px 28px 28px;
    transform:translateX(100%); transition:transform .3s var(--ease);
    box-shadow:-8px 0 30px rgba(0,0,0,.15);
  }
  .nav.is-open{ transform:translateX(0); }
  .nav a{ color:var(--ink) !important; text-shadow:none !important; font-size:18px; padding-block:10px; border-bottom:1px solid var(--line); }
  .nav-toggle{ display:flex; }
  .header__phone{ display:none; }
  .header__actions .btn--sm{ padding:8px 14px; font-size:13px; }

  .hero{ height:100vh; }
  .hero__content{ padding-block:64px 260px; }
  .clients-strip{ padding-block:14px; }
  .clients-strip__logos{ gap:20px; flex-wrap:wrap; justify-content:flex-start; }
  .footer__inner{ grid-template-columns:1fr; padding-block:48px 32px; }
  .gallery{ grid-template-columns:repeat(2,1fr); }
  .testimonials{ grid-template-columns:1fr; gap:28px; }
  .section{ padding-block:72px; }
}

@media (max-width: 480px){
  .hero__actions .btn, .cta-final .hero__actions .btn{ width:100%; }
  .clients-strip__logos img{ height:20px !important; }
}