/* =========================================================
   Grupo LLA — Artefatos de Concreto
   Dark premium + acento laranja da marca
   ========================================================= */

:root{
  --bg:        #171614;   /* warm near-black */
  --bg-2:      #1e1c19;   /* panels */
  --bg-3:      #26231f;   /* raised cards */
  --line:      rgba(255,255,255,.09);
  --line-2:    rgba(255,255,255,.14);
  --text:      #ECE9E3;
  --muted:     #A69F95;
  --muted-2:   #8A8379;
  --accent:    #FFA400;   /* brand orange */
  --accent-2:  #ffb733;
  --accent-ink:#20180a;
  --radius:    14px;
  --radius-lg: 22px;
  --wrap:      1180px;
  --ease:      cubic-bezier(.22,.61,.36,1);
  --shadow:    0 24px 60px -24px rgba(0,0,0,.7);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:clip;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:"Archivo",system-ui,sans-serif;line-height:1.05;margin:0;letter-spacing:-.01em}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.wrap-narrow{max-width:820px}

/* ---------- Buttons ---------- */
.btn{
  --pad:14px 26px;
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:var(--pad);
  font-family:"Archivo",sans-serif;font-weight:700;font-size:.95rem;
  letter-spacing:.02em;border-radius:999px;border:1px solid transparent;
  cursor:pointer;transition:transform .2s var(--ease), background .2s, color .2s, border-color .2s;
  white-space:nowrap;-webkit-appearance:none;appearance:none;line-height:1;
}
/* botão flutuante do Merlin com a cor da identidade da LLA */
.merlin-button{background:var(--accent)!important}
.btn:hover{transform:translateY(-2px)}
.btn-sm{--pad:11px 20px;font-size:.85rem}
.btn-lg{--pad:17px 34px;font-size:1rem}
.btn-accent{background:var(--accent);color:var(--accent-ink);box-shadow:0 10px 30px -10px rgba(255,164,0,.55)}
.btn-accent:hover{background:var(--accent-2)}
.btn-ghost{background:rgba(255,255,255,.06);color:var(--text);border-color:var(--line-2);backdrop-filter:blur(6px)}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-outline{background:transparent;color:var(--text);border-color:var(--line-2)}
.btn-outline:hover{border-color:var(--accent);color:var(--accent)}

/* ---------- Kickers / heads ---------- */
.kicker{
  display:inline-block;font-family:"Archivo",sans-serif;font-weight:700;
  font-size:.78rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--accent);margin-bottom:16px;
}
.kicker-light{color:var(--accent-ink);opacity:.9}
.eyebrow{
  font-family:"Archivo",sans-serif;font-weight:600;font-size:.8rem;
  letter-spacing:.24em;text-transform:uppercase;color:var(--accent);margin:0 0 18px;
}
.section{padding:clamp(64px,9vw,120px) 0}
.section-head{max-width:640px;margin-bottom:56px}
.section-head h2{font-size:clamp(2rem,4.4vw,3.1rem);font-weight:800;margin-bottom:16px}
.section-head p{color:var(--muted);font-size:1.06rem;margin:0}
.section-foot{margin-top:48px;display:flex;justify-content:center}
.section-foot--right{justify-content:flex-end;max-width:760px}
.accent{color:var(--accent)}

/* =========================================================
   HEADER
   ========================================================= */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  transition:background .3s var(--ease), border-color .3s, backdrop-filter .3s;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(20,19,17,.82);
  backdrop-filter:blur(14px) saturate(1.2);
  border-bottom-color:var(--line);
}
.header-inner{display:flex;align-items:center;gap:28px;height:82px}
.brand{display:flex;align-items:center;margin-right:auto}
.brand-mark{height:52px;width:auto;filter:drop-shadow(0 4px 12px rgba(0,0,0,.5))}
.nav{display:flex;gap:30px}
.nav a{
  font-family:"Archivo",sans-serif;font-weight:600;font-size:.94rem;color:var(--muted);
  position:relative;padding:6px 0;transition:color .2s;
}
.nav a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--accent);transition:width .25s var(--ease)}
.nav a:hover{color:var(--text)}
.nav a:hover::after{width:100%}

.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:26px;height:2px;background:var(--text);transition:.25s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.nav-mobile{
  display:none;flex-direction:column;gap:4px;padding:0 24px;
  background:rgba(18,17,15,.98);border-bottom:1px solid var(--line);
  max-height:0;overflow:hidden;transition:max-height .35s var(--ease);
}
.nav-mobile.open{max-height:420px;padding-top:12px;padding-bottom:24px}
.nav-mobile a{padding:14px 4px;font-family:"Archivo",sans-serif;font-weight:600;color:var(--text);border-bottom:1px solid var(--line)}
.nav-mobile .btn{margin-top:16px;border-bottom:0}

/* =========================================================
   HERO
   ========================================================= */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden}
.hero-bg{
  position:absolute;inset:0;
  background:var(--hero-img, url("../assets/img/hero.jpg")) center/cover no-repeat;
  transform:scale(1.05);
}
.hero-overlay{
  position:absolute;inset:0;
  background:
    linear-gradient(180deg, rgba(15,14,12,.72) 0%, rgba(15,14,12,.55) 40%, rgba(15,14,12,.92) 100%),
    radial-gradient(120% 80% at 15% 20%, rgba(255,164,0,.10), transparent 55%);
}
.hero-inner{position:relative;z-index:2;padding-top:120px;padding-bottom:80px}
.hero-title{
  font-size:clamp(2rem,4.6vw,3.5rem);font-weight:900;letter-spacing:-.02em;
  text-transform:uppercase;margin-bottom:22px;text-shadow:0 6px 40px rgba(0,0,0,.5);
  max-width:15ch;
}
.hero-sub{font-size:clamp(1.05rem,2vw,1.3rem);color:#e7e2d9;max-width:640px;margin:0 0 36px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px}
.hero-trust{
  list-style:none;display:flex;flex-wrap:wrap;gap:14px 44px;margin:56px 0 0;padding:38px 0 0;
  border-top:1px solid var(--line);
}
.hero-trust li{display:flex;flex-direction:column}
.hero-trust strong{font-family:"Archivo",sans-serif;font-size:clamp(1.8rem,2.5vw,2.2rem);font-weight:800;color:#fff;line-height:1.05}
.hero-trust li>span{font-size:.9rem;color:var(--muted);letter-spacing:.02em}

/* =========================================================
   PRODUTOS
   ========================================================= */
.product-grid{
  display:grid;grid-template-columns:repeat(5,1fr);gap:18px;
}
.product-grid--few{grid-template-columns:repeat(2,minmax(0,1fr));max-width:760px;margin-inline:0}
.product-card{
  background:linear-gradient(180deg,var(--bg-3),var(--bg-2));
  border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 18px 22px;transition:transform .3s var(--ease),border-color .3s,box-shadow .3s;
  position:relative;overflow:hidden;
}
.product-card:hover{transform:translateY(-6px);border-color:var(--line-2);box-shadow:var(--shadow)}
.product-thumb{
  aspect-ratio:1;border-radius:10px;margin-bottom:16px;
  background:radial-gradient(120% 120% at 50% 25%, #35312b 0%, #201d19 70%);
  display:flex;align-items:center;justify-content:center;padding:14px;
}
.product-thumb img{width:100%;height:100%;object-fit:contain;filter:drop-shadow(0 12px 18px rgba(0,0,0,.5))}
.product-card h3{font-size:1rem;font-weight:700;margin-bottom:10px;min-height:2.4em}
.product-dims{list-style:none;margin:0 0 4px;padding:0;display:flex;flex-direction:column;gap:3px}
.product-dims li{font-size:.82rem;color:var(--muted);font-variant-numeric:tabular-nums}
.product-colors{
  margin-top:12px;font-size:.74rem;letter-spacing:.06em;text-transform:uppercase;
  color:var(--accent);font-family:"Archivo",sans-serif;font-weight:600;
  display:inline-flex;align-items:center;gap:7px;
}
.product-colors::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px rgba(255,164,0,.18)}

/* =========================================================
   BAND — ATENDIMENTO
   ========================================================= */
.band-delivery{
  background:linear-gradient(120deg,var(--accent) 0%, #ff8c00 100%);
  color:var(--accent-ink);position:relative;overflow:hidden;
}
.band-delivery::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(80% 120% at 100% 0%, rgba(0,0,0,.12), transparent 60%);
  pointer-events:none;
}
.band-delivery-inner{
  position:relative;z-index:1;display:grid;grid-template-columns:1.4fr .8fr;gap:48px;
  align-items:center;padding:clamp(56px,7vw,90px) 24px;
}
.band-delivery h2{font-size:clamp(1.9rem,4vw,3rem);font-weight:800;margin-bottom:14px}
.band-delivery p{max-width:520px;margin:0 0 28px;color:#3a2c10;font-size:1.05rem}
.band-delivery .btn-accent{background:var(--accent-ink);color:#fff;box-shadow:0 12px 30px -12px rgba(0,0,0,.5)}
.band-delivery .btn-accent:hover{background:#000}
.band-delivery-stat{text-align:right}
.big-number{display:block;font-family:"Archivo",sans-serif;font-weight:900;font-size:clamp(5rem,12vw,9rem);line-height:.9;color:var(--accent-ink)}
.big-label{font-family:"Archivo",sans-serif;font-weight:700;text-transform:uppercase;letter-spacing:.14em;font-size:.85rem;color:#4a3810}

/* =========================================================
   DIFERENCIAIS
   ========================================================= */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:36px 30px;transition:transform .3s var(--ease),border-color .3s;
}
.feature:hover{transform:translateY(-5px);border-color:var(--line-2)}
.feature-ico{
  width:58px;height:58px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:rgba(255,164,0,.12);color:var(--accent);margin-bottom:22px;
}
.feature h3{font-size:1.3rem;font-weight:700;margin-bottom:12px}
.feature p{color:var(--muted);margin:0}

.advantages{
  margin-top:26px;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:clamp(32px,4vw,52px);display:grid;grid-template-columns:.9fr 2fr;gap:40px;align-items:center;
}
.advantages-head h3{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800}
.advantages-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.advantages-list li{position:relative;padding-top:22px;border-top:2px solid var(--accent)}
.advantages-list strong{display:block;font-family:"Archivo",sans-serif;font-size:1.15rem;font-weight:700;margin-bottom:6px}
.advantages-list span{color:var(--muted);font-size:.95rem}

/* =========================================================
   QUALIDADE
   ========================================================= */
.section-quality{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.quality-points{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.quality-points li{padding:28px 22px;background:var(--bg-3);border:1px solid var(--line);border-radius:var(--radius);transition:border-color .3s}
.quality-points li:hover{border-color:var(--accent)}
.q-num{font-family:"Archivo",sans-serif;font-weight:800;font-size:1.6rem;color:var(--accent);display:block;margin-bottom:14px}
.quality-points p{margin:0;color:var(--muted);font-size:.98rem}

/* =========================================================
   SOBRE
   ========================================================= */
.about-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(36px,6vw,80px);align-items:center}
.about-media{
  background:radial-gradient(120% 120% at 50% 30%, #2b2822, #1a1815);
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:48px;
}
.about-media img{margin:0 auto;max-width:340px}
.about-body h2{font-size:clamp(2rem,4vw,3rem);font-weight:800;margin-bottom:22px}
.about-body p{color:var(--muted);margin:0 0 18px;font-size:1.05rem}
.about-body p strong{color:var(--text)}
.about-body .btn{margin-top:12px}

/* =========================================================
   FAQ
   ========================================================= */
.section-faq{background:var(--bg-2);border-top:1px solid var(--line)}
.faq{display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--bg-3);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:border-color .3s}
.faq-item.open{border-color:var(--line-2)}
.faq-q{
  width:100%;text-align:left;background:none;border:0;cursor:pointer;color:var(--text);
  font-family:"Archivo",sans-serif;font-weight:600;font-size:1.05rem;
  padding:22px 24px;display:flex;justify-content:space-between;align-items:center;gap:16px;
}
.faq-q .plus{position:relative;width:20px;height:20px;flex:0 0 20px}
.faq-q .plus::before,.faq-q .plus::after{content:"";position:absolute;background:var(--accent);border-radius:2px;transition:transform .3s var(--ease)}
.faq-q .plus::before{top:9px;left:0;width:20px;height:2px}
.faq-q .plus::after{top:0;left:9px;width:2px;height:20px}
.faq-item.open .plus::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s var(--ease)}
.faq-a-inner{padding:0 24px 24px;color:var(--muted);font-size:1rem}

/* =========================================================
   CONTATO
   ========================================================= */
.section-contact{
  position:relative;text-align:center;
  background:
    linear-gradient(rgba(15,14,12,.86),rgba(15,14,12,.92)),
    url("../assets/img/hero.jpg") center/cover fixed no-repeat;
}
.contact-inner{display:flex;flex-direction:column;align-items:center}
.contact-inner h2{max-width:18ch;margin-left:auto;margin-right:auto}
.contact-inner p{max-width:60ch;margin-left:auto;margin-right:auto}
.section-contact h2{font-size:clamp(2rem,4.6vw,3.3rem);font-weight:800;margin-bottom:20px}
.section-contact p{color:var(--muted);font-size:1.1rem;margin:0 0 34px}

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer{background:#100f0d;border-top:1px solid var(--line);padding:72px 0 32px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
.footer-logo{height:88px;width:auto;margin-bottom:20px}
.footer-brand p{color:var(--muted-2);font-size:.92rem;max-width:420px;margin:0}
.footer-col h4{font-family:"Archivo",sans-serif;font-size:.82rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:18px}
.footer-col a{display:block;color:var(--muted);font-size:.94rem;padding:6px 0;transition:color .2s}
.footer-col a:hover{color:var(--text)}
.footer-bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  margin-top:56px;padding-top:26px;border-top:1px solid var(--line);
  color:var(--muted-2);font-size:.85rem;
}

/* =========================================================
   REVEAL (falha-segura: só esconde quando JS confirma que vai revelar)
   ========================================================= */
.js .reveal{opacity:0;transform:translateY(28px);transition:opacity .8s var(--ease),transform .8s var(--ease);transition-delay:var(--d,0s)}
.js .reveal.in{opacity:1;transform:none}

/* =========================================================
   ANIMAÇÕES
   ========================================================= */

/* barra de progresso de scroll */
.scroll-progress{
  position:fixed;top:0;left:0;height:3px;width:0;z-index:80;
  background:linear-gradient(90deg,var(--accent),#ff8c00);
  box-shadow:0 0 12px rgba(255,164,0,.6);transition:width .1s linear;
}

/* hero: zoom-out de entrada na imagem + drift sutil depois */
.hero-bg{will-change:transform;transform-origin:center;
  animation:heroZoomOut 2.4s var(--ease) both, heroDrift 30s ease-in-out 2.4s infinite alternate;}
@keyframes heroZoomOut{ from{transform:scale(1.34)} to{transform:scale(1.06)} }
@keyframes heroDrift{
  from{transform:scale(1.06) translate3d(0,0,0)}
  to{transform:scale(1.12) translate3d(-1.4%,-1.2%,0)}
}

/* hero: parallax + fade do conteúdo (JS controla no scroll) */
.hero-inner{will-change:transform,opacity}

/* hero: elementos entram DEPOIS do zoom-out da imagem, em cascata */
.js .hero-inner .reveal{--d:1.1s;transform:translateY(38px)}
.js .hero-inner .reveal:nth-child(1){--d:1.10s}
.js .hero-inner .reveal:nth-child(2){--d:1.28s}
.js .hero-inner .reveal:nth-child(3){--d:1.48s}
.js .hero-inner .reveal:nth-child(4){--d:1.68s}
.js .hero-inner .reveal:nth-child(5){--d:1.88s}

/* botões: brilho ao passar o mouse */
.btn-accent{position:relative;overflow:hidden}
.btn-accent::after{
  content:"";position:absolute;top:0;left:-120%;width:60%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.45),transparent);
  transform:skewX(-18deg);transition:left .6s var(--ease);pointer-events:none;
}
.btn-accent:hover::after{left:130%}

/* produtos: zoom suave na peça no hover */
.product-thumb img{transition:transform .5s var(--ease)}
.product-card:hover .product-thumb img{transform:scale(1.08) rotate(-1deg)}

/* contadores */
.count{font-variant-numeric:tabular-nums}

/* diferenciais: leve “respiro” no ícone ao passar o mouse */
.feature-ico{transition:transform .4s var(--ease),background .3s}
.feature:hover .feature-ico{transform:translateY(-4px) scale(1.06);background:rgba(255,164,0,.2)}

/* qualidade: número desliza no hover */
.quality-points li{transition:border-color .3s,transform .3s var(--ease)}
.quality-points li:hover{transform:translateY(-5px)}

@media (prefers-reduced-motion:reduce){
  .js .reveal{opacity:1;transform:none;transition:none}
  .hero-bg{animation:none;transform:scale(1.05)}
  .btn-accent::after{display:none}
  html{scroll-behavior:auto}
}

/* =========================================================
   RESPONSIVO
   ========================================================= */
@media (max-width:1080px){
  .product-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:900px){
  .nav,.header-inner>.btn{display:none}
  .nav-toggle{display:flex}
  .nav-mobile{display:flex}
  .feature-grid{grid-template-columns:1fr}
  .advantages{grid-template-columns:1fr;gap:28px}
  .advantages-list{grid-template-columns:1fr}
  .about-grid{grid-template-columns:1fr}
  .about-media{order:-1}
  .band-delivery-inner{grid-template-columns:1fr;gap:24px}
  .band-delivery-stat{text-align:left}
  .quality-points{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .section-foot--right{justify-content:center}
}
@media (max-width:620px){
  .product-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .product-card h3{min-height:auto}
  .quality-points{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero-trust{gap:20px 30px}
  .brand-mark{height:44px}
}