/* ===================================================================
   FLAVIPEDRA — Design System
   Mármores, Granitos e Pedra Natural | Chaves, Portugal
=================================================================== */

:root{
  --ink:        #17181a;
  --ink-soft:   #3a3c40;
  --stone-700:  #55585d;
  --stone-500:  #83878d;
  --stone-300:  #c9cbce;
  --stone-100:  #eeeeec;
  --paper:      #ffffff;
  --paper-2:    #f7f6f4;
  --accent:     #c71f2d;
  --accent-dark:#8f1520;
  --line:       #e4e3e0;

  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --container: 1240px;
  --radius: 2px;
  --ease: cubic-bezier(.16,.8,.28,1);
  --shadow-sm: 0 1px 2px rgba(20,18,14,.06);
  --shadow-md: 0 12px 32px -12px rgba(20,18,14,.22);
  --shadow-lg: 0 24px 60px -20px rgba(20,18,14,.35);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; scroll-padding-top:96px; }
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  line-height:1.6;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; margin:0; padding:0; }
button{ font:inherit; cursor:pointer; }
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:600;
  line-height:1.12;
  margin:0 0 .5em;
  letter-spacing:-.01em;
  color:var(--ink);
}
h1{ font-size:clamp(2.4rem,5vw,4.2rem); font-weight:500; }
h2{ font-size:clamp(1.9rem,3.4vw,2.75rem); }
h3{ font-size:1.3rem; }
p{ margin:0 0 1em; color:var(--stone-700); }
.container{ max-width:var(--container); margin:0 auto; padding:0 28px; }
.eyebrow{
  font-family:var(--font-body); font-size:.78rem; font-weight:600;
  letter-spacing:.14em; text-transform:uppercase; color:var(--accent);
  margin:0 0 12px;
}
section{ padding:70px 0; }
.bg-stone{ background:var(--paper-2); }
.bg-ink{ background:var(--ink); color:#fff; }
.bg-ink p{ color:#c7c6c3; }
.bg-ink h2, .bg-ink h3{ color:#fff; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:10px;
  padding:18px 34px; font-weight:600; font-size:.92rem;
  border-radius:var(--radius); border:1px solid transparent;
  transition:all .25s var(--ease); white-space:nowrap;
}
.btn-primary{ background:var(--accent); color:#fff; }
.btn-primary:hover{ background:var(--accent-dark); transform:translateY(-2px); box-shadow:var(--shadow-md); }
.btn-outline{ border-color:var(--ink); color:var(--ink); }
.btn-outline:hover{ background:var(--ink); color:#fff; }
.btn-outline-light{ border-color:rgba(255,255,255,.6); color:#fff; }
.btn-outline-light:hover{ background:#fff; color:var(--ink); border-color:#fff; }
.btn-sm{ padding:10px 18px; font-size:.82rem; }
.btn svg{ width:16px; height:16px; }

/* ---------- Skip link (a11y) ---------- */
.skip-link{
  position:absolute; left:-999px; top:0; background:var(--ink); color:#fff;
  padding:12px 20px; z-index:9999;
}
.skip-link:focus{ left:12px; top:12px; }

/* ---------- Header ---------- */
.site-header{
    position:absolute;
    top:0;
    left:0;
    width:100%;
    z-index:1000;
    background:transparent;
    padding:30px 0;
}

.site-header .container{
    display:flex;
    align-items:center;
    justify-content:space-between;
}

.site-header.is-scrolled{
    position:fixed;
    background:rgba(255,255,255,.95);
    backdrop-filter:blur(12px);
}
.logo-chip{ display:inline-flex; align-items:center; }
.logo-chip img{ height:86px; width:auto; transition:filter .3s; }
.site-header.transparent-mode:not(.is-scrolled) .logo-chip img.logo-dark{ display:none; }
.site-header.transparent-mode.is-scrolled .logo-chip img.logo-light{ display:none; }
.site-header:not(.transparent-mode) .logo-chip img.logo-light{ display:none; }

.nav-main{ display:flex; align-items:center; gap:2px; }
.nav-main > li{ position:relative; }
.nav-main > li > a{
  display:block; padding:10px 16px; font-size:.92rem; font-weight:500;
  color:var(--nav-color, var(--ink)); transition:opacity .2s;
}
.site-header.transparent-mode:not(.is-scrolled) .nav-main > li > a,
.site-header.transparent-mode:not(.is-scrolled) .lang-switch a{ color:#fff; }
.nav-main > li > a:hover{ opacity:.65; }
.has-dropdown .dropdown{
  position:absolute; top:100%; left:0; min-width:200px;
  background:#fff; box-shadow:var(--shadow-md); border-radius:var(--radius);
  padding:8px; opacity:0; visibility:hidden; transform:translateY(6px);
  transition:all .2s var(--ease);
}
.has-dropdown:hover .dropdown{ opacity:1; visibility:visible; transform:translateY(0); }
.dropdown li a{ display:block; padding:10px 14px; color:var(--ink); font-size:.9rem; border-radius:2px; }
.dropdown li a:hover{ background:#f8ecee; color:var(--accent-dark); }

.header-actions{ display:flex; align-items:center; gap:20px; }
.lang-switch{ font-size:.78rem; color:var(--stone-500); display:flex; gap:6px; }
.lang-switch a:hover{ color:var(--accent); }
.header-cta{ display:none; }
@media (min-width:1100px){ .header-cta{ display:inline-flex; } }

.burger{ display:flex; flex-direction:column; gap:5px; background:none; border:0; padding:6px; z-index:1200; }
.burger span{ width:24px; height:2px; background:currentColor; display:block; transition:.3s; }
.site-header.transparent-mode:not(.is-scrolled) .burger{ color:#fff; }
@media (min-width:1000px){ .burger{ display:none; } }
@media (max-width:999px){ .nav-main, .lang-switch{ display:none; } }

.mobile-nav{
  position:fixed; inset:0; background:var(--ink); color:#fff; z-index:1100;
  display:flex; flex-direction:column; justify-content:center; padding:40px;
  transform:translateY(-100%); transition:transform .4s var(--ease);
}
.mobile-nav.open{ transform:translateY(0); }
.mobile-nav ul{ display:flex; flex-direction:column; gap:6px; }
.mobile-nav a{ font-family:var(--font-display); font-size:2.1rem; padding:10px 0; display:block; }
.mobile-nav .mobile-lang{ margin-top:24px; display:flex; align-items:center; gap:10px; flex-wrap:wrap; }
.mobile-nav .mobile-lang a{ font-family:var(--font-body); font-size:.76rem; line-height:1; padding:6px 10px; display:inline-flex; align-items:center; justify-content:center; color:var(--stone-300); border:1px solid rgba(255,255,255,.2); border-radius:999px; min-width:34px; height:30px; }
.mobile-nav .mobile-lang a[aria-current="true"]{ color:#fff; border-color:var(--accent); background:var(--accent); }
.mobile-nav .mobile-lang a:hover{ color:#fff; border-color:rgba(255,255,255,.55); }
.mobile-nav .nav-close{ position:absolute; top:28px; right:28px; width:26px; height:26px; cursor:pointer; }
.mobile-nav .mnav-sub{ font-family:var(--font-body); font-size:.95rem; color:#c7c6c3; padding-left:6px; }

/* ---------- Hero ---------- */
.hero{
    position:relative;
    min-height:100vh;
    display:flex;
    align-items:center;
    overflow:hidden;
    color:#fff;
    padding-top:0;
}
.hero-media{
    position:absolute;
    inset:0;
}
.hero-media img{
    width:100%;
    height:100%;
    object-fit:cover;
    object-position:35% center;
}
.hero-media::after{
    content:"";
    position:absolute;
    inset:0;
    background:rgba(0,0,0,.22);
}
.hero-content{
    position:relative;
    z-index:2;
    max-width:640px;

    padding-top:180px;
    padding-bottom:150px;

    margin-left:0;
}
.hero-tag{
    color:white;
    opacity:.9;
    text-transform:uppercase;
    letter-spacing:.25em;
    font-size:.85rem;
    margin:0 0 24px;
}
.hero h1{
    color:white;
    max-width:11.5ch;
    font-size:clamp(3rem,6vw,5.7rem);
    line-height:1.02;
    margin:0 0 12px;
}
.hero .lead{
    max-width:500px;
    color:white;
    opacity:.95;
    font-size:1.25rem;
    line-height:1.36;
    margin:16px 0 16px;
}
.hero-actions{ display:flex; gap:14px; margin:0; flex-wrap:wrap; }
.hero-stats{
    display:flex;
    gap:120px;

    padding-top:24px;

    border-top:1px solid rgba(255,255,255,.20);

    margin-top:24px;
}
.hero-stats div{ min-width:140px; }
.hero-stats strong{ font-family:var(--font-display); font-size:1.95rem; display:block; color:#fff; }
.hero-stats span{ font-size:.8rem; color:#e0dbd7; }
.scroll-cue{
    position:absolute;
    bottom:28px;
    right:32px;
    color:white;
}
.scroll-cue .line{ width:1px; height:50px; background:rgba(255,255,255,.5); }

/* ---------- Trust bar ---------- */
.trust-bar{ background:linear-gradient(90deg, #fff 0%, #fff7f8 50%, #fff 100%); padding:22px 0; border-bottom:1px solid rgba(199,31,45,.14); }
.trust-bar .container{ display:flex; align-items:center; gap:36px; flex-wrap:wrap; }
.trust-cert{ display:flex; align-items:center; gap:22px; opacity:.85; transition:opacity .2s; }
.trust-cert:hover{ opacity:1; }
.trust-cert img{ height:46px; width:auto; }
.trust-cert img.trust-norte{ height:56px; }

.material-item{ display:flex; flex-direction:column; gap:14px; }
.material-caption{ display:flex; align-items:flex-start; justify-content:space-between; gap:18px; padding:0 4px; }
.material-title{ font-weight:700; font-size:1.05rem; color:var(--ink); margin-bottom:4px; }
.material-note{ font-size:.88rem; color:var(--stone-500); line-height:1.4; max-width:22ch; }
.material-caption .btn{ padding:10px 14px; flex:none; }

/* ---------- Section head ---------- */
.section-head{ display:flex; justify-content:space-between; align-items:flex-end; gap:40px; margin-bottom:56px; flex-wrap:wrap; }
.section-head .lead{ max-width:40ch; font-size:1.02rem; }

/* ---------- Material cards ---------- */
.grid-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:26px; }
.grid-2{ display:grid; grid-template-columns:repeat(2,1fr); gap:26px; }
@media (max-width:900px){ .grid-3{ grid-template-columns:1fr; } .grid-2{ grid-template-columns:1fr; } }

.material-card{ position:relative; display:block; overflow:hidden; border-radius:var(--radius); background:var(--ink); aspect-ratio:3/4; }
.material-card img{ width:100%; height:100%; object-fit:cover; transition:transform .7s var(--ease); }
.material-card:hover img{ transform:scale(1.06); }
.material-card::after{ content:""; position:absolute; inset:0; background:linear-gradient(180deg, rgba(0,0,0,0) 40%, rgba(0,0,0,.82) 100%); }
.material-card-info{ position:absolute; left:0; right:0; bottom:0; z-index:1; padding:28px; color:#fff; }
.material-card-info span{ font-size:.72rem; text-transform:uppercase; letter-spacing:.12em; color:#d9d6cd; }
.material-card-info h3{ color:#fff; margin:6px 0 14px; }
.material-card-info a{ display:inline-flex; align-items:center; gap:8px; font-size:.85rem; font-weight:600; border-bottom:1px solid rgba(255,255,255,.5); padding-bottom:4px; }
.material-card-info a svg{ width:15px; height:15px; transition:transform .25s; }
.material-card-info a:hover svg{ transform:translateX(4px); }

/* ---------- Split / about ---------- */
.split{ display:grid; grid-template-columns:1fr 1fr; gap:70px; align-items:center; }
@media (max-width:900px){ .split{ grid-template-columns:1fr; gap:40px; } }
.split-text{ overflow:hidden; }
.split-text.reveal.in-view{ animation:about-intro .78s var(--ease) both; }
@keyframes about-intro{ from{ opacity:0; transform:translateY(14px); } to{ opacity:1; transform:translateY(0); } }
.stat-row{ display:flex; gap:48px; margin-top:14px; }
.stat-row strong{ font-family:var(--font-display); font-size:2.2rem; display:block; }
.stat-row span{ font-size:.82rem; color:var(--stone-500); }
.about-gallery{ display:flex; flex-direction:column; gap:12px; }
.about-main{
    background:transparent;
    padding:0;
    border-radius:var(--radius);
    overflow:hidden;
}
.about-main img{
    display:block;
    width:100%;
    height:100%;
    object-fit:cover;
    transition:opacity .45s var(--ease), transform .7s var(--ease);
}
.about-main .ph{ position:relative; overflow:hidden; }
.about-main .ph img{ opacity:1; }
.about-main .ph.is-switching img{ opacity:.18; }
.about-caption{ position:absolute; left:18px; bottom:16px; color:#fff; font-size:.82rem; background:rgba(15,15,15,.55); padding:6px 12px; border-radius:2px; }
.about-thumbs{ display:grid; grid-template-columns:repeat(4,1fr); gap:10px; }
.about-thumb{ border:2px solid transparent; padding:0; background:none; border-radius:2px; overflow:hidden; aspect-ratio:1; }
.about-thumb img{ width:100%; height:100%; object-fit:cover; opacity:.75; transition:opacity .2s; }
.about-thumb.active{ border-color:var(--accent); }
.about-thumb.active img, .about-thumb:hover img{ opacity:1; }

/* ---------- Vantagens ---------- */
.vantagens-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:30px; }
@media (max-width:1000px){ .vantagens-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:560px){ .vantagens-grid{ grid-template-columns:1fr; } }
.vantagem-icon{ width:52px; height:52px; border:1px solid var(--line); border-radius:50%; display:flex; align-items:center; justify-content:center; margin-bottom:20px; color:var(--accent); }
.vantagem-icon svg{ width:24px; height:24px; }
.vantagem p{ font-size:.94rem; }

/* ---------- CTA banner ---------- */
.cta-banner{ position:relative; padding:120px 0; color:#fff; text-align:center; overflow:hidden; }
.cta-banner img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; z-index:0; }
.cta-banner::before{ content:""; position:absolute; inset:0; background:rgba(10,10,10,.6); z-index:0; }
.cta-banner .container{ position:relative; z-index:1; max-width:640px; }
.cta-banner h2{ color:#fff; }
.cta-banner p{ color:#e6e4df; font-size:1.05rem; }
.btn-group{ display:flex; gap:14px; justify-content:center; margin-top:30px; flex-wrap:wrap; }

/* ---------- Filters (Materiais) ---------- */
.filter-bar{ display:flex; gap:10px; flex-wrap:wrap; margin-bottom:44px; }
.filter-btn{
  padding:10px 20px; border:1px solid var(--line); border-radius:30px;
  background:#fff; font-size:.86rem; font-weight:500; color:var(--stone-700); transition:.2s;
}
.filter-btn.active, .filter-btn:hover{ background:var(--ink); color:#fff; border-color:var(--ink); }
.grid-materials{ display:grid; grid-template-columns:repeat(4,1fr); gap:22px; }
@media (max-width:1000px){ .grid-materials{ grid-template-columns:repeat(3,1fr); } }
@media (max-width:700px){ .grid-materials{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:480px){ .grid-materials{ grid-template-columns:1fr 1fr; gap:12px; } }
.swatch{ display:block; border-radius:var(--radius); overflow:hidden; background:var(--paper-2); }
.swatch-img{ aspect-ratio:1; overflow:hidden; }
.swatch-img img{ width:100%; height:100%; object-fit:cover; transition:transform .5s var(--ease); }
.swatch:hover .swatch-img img{ transform:scale(1.08); }
.swatch-label{ padding:14px 4px 4px; font-size:.86rem; font-weight:600; }
.swatch-cat{ font-size:.7rem; text-transform:uppercase; letter-spacing:.08em; color:var(--stone-500); }
.material-section-title{ margin:80px 0 30px; }
.material-section-title:first-child{ margin-top:0; }

.partners-row{ display:flex; align-items:center; gap:48px; flex-wrap:wrap; justify-content:space-between; }
.partners-row img{ height:38px; width:auto; filter:grayscale(1); opacity:.65; transition:.25s; }
.partners-row img:hover{ filter:none; opacity:1; }

/* ---------- Gallery / Projetos ---------- */
.gallery-grid{ column-count:3; column-gap:20px; }
@media (max-width:900px){ .gallery-grid{ column-count:2; } }
@media (max-width:560px){ .gallery-grid{ column-count:1; } }
.gallery-item{ break-inside:avoid; margin-bottom:20px; border-radius:var(--radius); overflow:hidden; position:relative; }
.gallery-item img{ width:100%; height:auto; transition:transform .5s var(--ease); }
.gallery-item:hover img{ transform:scale(1.04); }

/* ---------- Testemunhos ---------- */
.testi-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:30px; }
@media (max-width:900px){ .testi-grid{ grid-template-columns:1fr; } }
.testi-card{ background:#fff; border:1px solid var(--line); padding:34px; border-radius:var(--radius); }
.testi-stars{ color:var(--accent); letter-spacing:2px; margin-bottom:16px; font-size:.95rem; }
.testi-quote{ font-family:var(--font-display); font-size:1.08rem; color:var(--ink); margin-bottom:22px; }
.testi-name{ font-weight:600; font-size:.9rem; }
.testi-role{ font-size:.8rem; color:var(--stone-500); }

/* ---------- FAQ ---------- */
.faq-list{ max-width:820px; margin:0 auto; border-top:1px solid var(--line); }
.faq-item{ border-bottom:1px solid var(--line); }
.faq-q{
  width:100%; display:flex; justify-content:space-between; align-items:center; text-align:left;
  background:none; border:0; padding:26px 4px; font-family:var(--font-display); font-size:1.12rem; color:var(--ink);
}
.faq-q .plus{ font-size:1.4rem; color:var(--accent); transition:transform .3s; flex:none; margin-left:20px; }
.faq-item.open .faq-q .plus{ transform:rotate(45deg); }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .35s var(--ease); }
.faq-a-in{ padding:0 4px 26px; max-width:70ch; }
.faq-item.open .faq-a{ max-height:400px; }

/* ---------- Contact ---------- */
.contact-grid{ display:grid; grid-template-columns:1.1fr .9fr; gap:60px; }
@media (max-width:960px){ .contact-grid{ grid-template-columns:1fr; } }
.field{ margin-bottom:18px; }
.field label{ display:block; font-size:.8rem; font-weight:600; margin-bottom:8px; color:var(--ink-soft); }
.field input, .field textarea{
  width:100%; padding:14px 16px; border:1px solid var(--line); border-radius:var(--radius);
  font-family:var(--font-body); font-size:.95rem; background:#fff; transition:border-color .2s;
}
.field input:focus, .field textarea:focus{ outline:none; border-color:var(--ink); }
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:18px; }
@media (max-width:560px){ .field-row{ grid-template-columns:1fr; } }
.checkbox-row{ display:flex; align-items:flex-start; gap:10px; font-size:.82rem; color:var(--stone-600); margin:18px 0 24px; }
.checkbox-row input{ margin-top:3px; }
.info-card{ background:var(--paper-2); border-radius:var(--radius); padding:34px; }
.info-line{ display:flex; gap:14px; padding:16px 0; border-bottom:1px solid var(--line); }
.info-line:last-child{ border-bottom:0; }
.info-line svg{ width:20px; height:20px; color:var(--accent); flex:none; margin-top:2px; }
.info-line strong{ display:block; font-size:.88rem; margin-bottom:2px; }
.info-line span, .info-line a{ font-size:.9rem; color:var(--stone-700); }
.map-wrap{ margin-top:26px; border-radius:var(--radius); overflow:hidden; aspect-ratio:16/10; }
.map-wrap iframe{ width:100%; height:100%; border:0; }
.form-note{ font-size:.8rem; color:var(--stone-500); margin-top:10px; }
.form-success, .form-error{ display:none; padding:16px 18px; border-radius:var(--radius); font-size:.9rem; margin-bottom:18px; }
.form-success{ background:#eef6ee; color:#2d5c2e; }
.form-error{ background:#fbeceb; color:#8a2e26; }

/* ---------- Breadcrumb / page hero (interior pages) ---------- */
.page-hero{ padding:190px 0 70px; background:linear-gradient(180deg, #fff7f8 0%, var(--paper-2) 100%); }
.page-hero .eyebrow{ margin-bottom:16px; }
.breadcrumb{ font-size:.8rem; color:var(--stone-500); margin-bottom:20px; }
.breadcrumb a:hover{ color:var(--accent); }

/* ---------- Footer ---------- */
footer{ background:var(--ink); color:#c7c6c3; padding:80px 0 26px; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1.2fr; gap:40px; padding-bottom:56px; border-bottom:1px solid rgba(255,255,255,.12); }
@media (max-width:900px){ .footer-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:560px){ .footer-grid{ grid-template-columns:1fr; } }
.footer-logo-wrap img{ height:34px; margin-bottom:18px; }
footer h4{ color:#fff; font-family:var(--font-body); font-size:.82rem; text-transform:uppercase; letter-spacing:.1em; margin-bottom:20px; }
footer ul li{ margin-bottom:12px; font-size:.9rem; }
footer a:hover{ color:#fff; }
.footer-social{ display:flex; gap:14px; margin-top:22px; }
.footer-social a{ width:36px; height:36px; border:1px solid rgba(255,255,255,.2); border-radius:50%; display:flex; align-items:center; justify-content:center; }
.footer-social svg{ width:16px; height:16px; }
.footer-social a:hover{ background:var(--accent); color:#fff; border-color:var(--accent); }
.footer-bottom{ display:flex; justify-content:space-between; align-items:center; padding-top:26px; font-size:.78rem; flex-wrap:wrap; gap:12px; }
.footer-lang{ display:flex; gap:20px; }

/* ---------- Floating WhatsApp ---------- */
.float-btn{
  position:fixed; right:26px; bottom:26px; z-index:900; width:56px; height:56px;
  background:#25D366; border-radius:50%; display:flex; align-items:center; justify-content:center;
  box-shadow:var(--shadow-md); transition:transform .25s;
}
.float-btn:hover{ transform:scale(1.08); }
.float-btn svg{ width:26px; height:26px; }

/* ---------- Scroll reveal ---------- */
.reveal{ opacity:0; transform:translateY(24px); transition:opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in-view{ opacity:1; transform:translateY(0); }
.reveal-1.in-view{ transition-delay:.08s; }
.reveal-2.in-view{ transition-delay:.16s; }
.reveal-3.in-view{ transition-delay:.24s; }
.reveal-4.in-view{ transition-delay:.32s; }
@media (prefers-reduced-motion:reduce){
  .reveal{ opacity:1; transform:none; transition:none; }
  html{ scroll-behavior:auto; }
}

/* ---------- Utility ---------- */
.text-center{ text-align:center; margin-left:auto; margin-right:auto; }
.mt-0{ margin-top:0; }
.small-note{ font-size:.82rem; color:var(--stone-500); }