/* ===========================================================
   ROTA VIVA — Folha de estilo principal
   Cores da marca: marinho (#1F3A4D) + teal (#2C9183)
   =========================================================== */

:root{
  --navy:#1F3A4D;
  --navy-700:#162c3b;
  --teal:#2C9183;
  --teal-600:#237268;
  --teal-50:#e8f3f1;
  --ink:#21323d;
  --muted:#5f7480;
  --line:#e4e9ec;
  --bg:#ffffff;
  --bg-soft:#f6f8f9;
  --radius:16px;
  --shadow:0 10px 30px rgba(31,58,77,.10);
  --shadow-sm:0 4px 14px rgba(31,58,77,.08);
  --maxw:1140px;
  --font:'Poppins',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  color:var(--ink);
  background:var(--bg);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--teal-600);text-decoration:none}
a:hover{text-decoration:underline}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* ---------- Cabeçalho / Navegação ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(31,58,77,.97);
  backdrop-filter:saturate(160%) blur(6px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:12px}
.brand img{height:44px;width:auto}
.brand .brand-name{
  color:#fff;font-weight:700;font-size:1.25rem;letter-spacing:.5px;
}
.brand .brand-name b{color:var(--teal)}
.nav-links{display:flex;align-items:center;gap:28px;list-style:none}
.nav-links a{
  color:#dbe6ea;font-weight:500;font-size:.98rem;
  text-decoration:none;transition:color .2s;
}
.nav-links a:hover,.nav-links a.active{color:var(--teal)}
.nav-toggle{
  display:none;background:none;border:0;cursor:pointer;padding:8px;
}
.nav-toggle span{display:block;width:26px;height:2px;background:#fff;margin:5px 0;transition:.3s}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  min-height:62vh;
  display:flex;align-items:center;
  color:#fff;text-align:center;
  background:linear-gradient(180deg,rgba(31,58,77,.28),rgba(31,58,77,.52)),
             url('../img/hero-estrada.jpg') center/cover no-repeat;
}
.hero .container{padding-top:60px;padding-bottom:60px}
.nav-search{
  display:flex;align-items:center;
  background:rgba(255,255,255,.12);
  border:1.5px solid rgba(255,255,255,.30);
  border-radius:999px;overflow:hidden;
  flex:1;max-width:320px;margin:0 24px;
  transition:background .2s, border-color .2s;
}
.nav-search-wrap{position:relative;flex:1;max-width:320px;margin:0 24px;display:flex;}
.nav-search-wrap .nav-search{flex:1;margin:0;}
.search-suggestions{
  display:none;position:absolute;top:calc(100% + 8px);left:0;right:0;
  background:#fff;border-radius:14px;
  box-shadow:0 6px 24px rgba(0,0,0,.18);
  z-index:9999;overflow:hidden;
}
.search-suggestions.open{display:block;}
.suggestion-item{
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 16px;font-size:.84rem;color:var(--navy);
  cursor:pointer;text-decoration:none;
  border-bottom:1px solid rgba(0,0,0,.06);
}
.suggestion-item:last-child{border-bottom:none;}
.suggestion-item:hover{background:var(--teal);color:#fff;}
.suggestion-tag{
  font-size:.68rem;font-weight:600;text-transform:uppercase;
  letter-spacing:.5px;color:var(--teal);flex-shrink:0;margin-left:10px;
}
.suggestion-item:hover .suggestion-tag{color:rgba(255,255,255,.8);}
.nav-search:focus-within{
  background:rgba(255,255,255,.22);
  border-color:rgba(255,255,255,.60);
}
.nav-search input{
  flex:1;background:transparent;border:0;outline:none;
  color:#fff;font-family:inherit;font-size:.9rem;
  padding:8px 16px;min-width:0;
}
.nav-search input::placeholder{color:rgba(255,255,255,.6)}
.nav-search button{
  background:transparent;border:0;cursor:pointer;
  color:rgba(255,255,255,.8);padding:0 14px;height:36px;
  display:flex;align-items:center;justify-content:center;
  transition:color .2s;flex-shrink:0;
}
.nav-search button:hover{color:#fff}
.hero h1{
  font-size:clamp(2rem,5vw,3.4rem);
  font-weight:700;line-height:1.15;
  max-width:840px;margin:0 auto 18px;
  text-shadow:0 2px 18px rgba(0,0,0,.3);
}
.hero p{
  font-size:clamp(1.05rem,2vw,1.3rem);
  max-width:620px;margin:0 auto 28px;color:#eaf1f3;
}
.eyebrow{
  display:inline-block;text-transform:uppercase;letter-spacing:3px;
  font-size:.8rem;font-weight:700;color:var(--navy);
  background:rgba(255,255,255,.88);
  border:1px solid rgba(255,255,255,.70);
  padding:7px 16px;border-radius:999px;margin-bottom:18px;
}

/* ---------- Botões ---------- */
.btn{
  display:inline-block;cursor:pointer;border:0;
  font-family:inherit;font-weight:600;font-size:1rem;
  padding:13px 28px;border-radius:999px;transition:.2s;text-decoration:none;
}
.btn-primary{background:var(--teal);color:#fff}
.btn-primary:hover{background:var(--teal-600);text-decoration:none;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.6)}
.btn-ghost:hover{background:#fff;color:var(--navy);text-decoration:none}

/* ---------- Seções ---------- */
.section{padding:72px 0}
.section.alt{background:var(--bg-soft)}
.section-head{text-align:center;max-width:680px;margin:0 auto 46px}
.section-head h2{
  font-size:clamp(1.7rem,3.5vw,2.4rem);color:var(--navy);font-weight:700;margin-bottom:12px;
}
.section-head p{color:var(--muted);font-size:1.08rem}
.section-head .eyebrow{color:var(--teal-600);background:var(--teal-50)}

/* ---------- Grade de artigos ---------- */
.posts-grid{
  display:grid;gap:28px;
  grid-template-columns:repeat(auto-fill,minmax(300px,1fr));
}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-sm);
  display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card-img-wrap{position:relative}
.card a.card-img{display:block;aspect-ratio:16/10;overflow:hidden}
.card a.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.card:hover a.card-img img{transform:scale(1.06)}
.card-body{padding:22px;display:flex;flex-direction:column;flex:1}
.card .tag{
  align-self:flex-start;font-size:.74rem;font-weight:600;text-transform:uppercase;
  letter-spacing:1px;color:var(--teal-600);background:var(--teal-50);
  padding:5px 12px;border-radius:999px;margin-bottom:14px;
}
.card h3{font-size:1.25rem;color:var(--navy);line-height:1.3;margin-bottom:10px}
.card h3 a{color:inherit;text-decoration:none}
.card h3 a:hover{color:var(--teal-600)}
.card .excerpt{color:var(--muted);font-size:.97rem;flex:1}
.card .meta{
  display:flex;align-items:center;gap:8px;margin-top:18px;
  font-size:.85rem;color:var(--muted);
}
.card .meta .dot{width:4px;height:4px;border-radius:50%;background:var(--muted)}

.loading,.empty{text-align:center;color:var(--muted);padding:40px 0}

/* ---------- Faixa de destaque (CTA) ---------- */
.cta-band{
  background:var(--navy);color:#fff;text-align:center;border-radius:var(--radius);
  padding:54px 28px;margin:0 auto;box-shadow:var(--shadow);
}
.cta-band h2{font-size:clamp(1.6rem,3vw,2.2rem);margin-bottom:12px}
.cta-band p{color:#cddbe1;max-width:560px;margin:0 auto 26px}

/* ---------- Página do artigo ---------- */
.article-hero{
  position:relative;min-height:65vh;display:flex;align-items:flex-end;
  color:#fff;background:var(--navy);
}
.article-hero .overlay{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(31,58,77,.10),rgba(31,58,77,.60));
}
.article-hero .container{position:relative;padding:48px 20px}
.article-hero .tag{
  display:inline-block;font-size:.74rem;font-weight:600;text-transform:uppercase;
  letter-spacing:1px;color:#fff;background:var(--teal);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.article-hero h1{font-size:clamp(1.8rem,4vw,2.8rem);max-width:820px;line-height:1.2}
.article-hero .meta{margin-top:16px;color:#d7e3e7;font-size:.95rem;display:flex;gap:8px;align-items:center}
.article-hero .meta .dot{width:4px;height:4px;border-radius:50%;background:#d7e3e7}
.photo-credit{
  display:block;margin-top:10px;
  font-size:.7rem;color:rgba(255,255,255,.9);
  background:transparent;padding:0;
  pointer-events:none;
  text-shadow:0 1px 4px rgba(0,0,0,.8);
}
.card-img-wrap .photo-credit{
  position:absolute;bottom:8px;left:12px;
  font-size:.58rem;color:#fff;margin-top:0;z-index:2;
  text-shadow:0 1px 4px rgba(0,0,0,.9);
}

.article-body{max-width:760px;margin:0 auto;padding:56px 20px}
.article-body p{margin:0 0 1.25em;font-size:1.12rem;color:#33454f}
.article-body h2{font-size:1.7rem;color:var(--navy);margin:1.8em 0 .6em}
.article-body h3{font-size:1.3rem;color:var(--navy);margin:1.5em 0 .5em}
.article-body img{border-radius:var(--radius);margin:1.6em 0 0;box-shadow:var(--shadow-sm);display:block;width:100%}
.img-figura{position:relative;margin:1.6em 0;display:inline-block;width:100%}
.img-figura img{margin:0;border-radius:var(--radius)}
.img-figura figcaption{
  position:absolute;bottom:0;left:0;
  background:rgba(255,255,255,.82);
  font-size:.68rem;color:#444;font-style:normal;
  padding:3px 10px;
  border-radius:0 6px 0 var(--radius);
}
.article-body ul,.article-body ol{margin:0 0 1.25em 1.4em}
.article-body li{margin-bottom:.5em;font-size:1.1rem;color:#33454f}
.article-body blockquote{
  border-left:4px solid var(--teal);background:var(--teal-50);
  padding:16px 22px;border-radius:0 12px 12px 0;margin:1.6em 0;color:var(--navy);font-style:italic;
}
.article-body a{color:var(--teal-600);text-decoration:underline}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:.95em}
.article-body th,.article-body td{padding:10px 14px;border:1px solid var(--line);text-align:left}
.article-body th{background:var(--navy);color:#fff;font-weight:600}
.article-body tr:nth-child(even) td{background:var(--teal-50)}
.article-body code{
  background:var(--bg-soft);border:1px solid var(--line);
  padding:2px 7px;border-radius:6px;font-size:.92em;
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}
.back-link{display:inline-flex;align-items:center;gap:8px;color:var(--teal-600);font-weight:600;margin-top:8px}

/* ---------- Páginas simples (Sobre/Contato) ---------- */
.page-head{
  background:var(--navy);color:#fff;text-align:center;padding:70px 20px 60px;
}
.page-head h1{font-size:clamp(1.9rem,4vw,2.8rem);margin-bottom:10px}
.page-head p{color:#cddbe1;max-width:560px;margin:0 auto}
.prose{max-width:760px;margin:0 auto;padding:56px 20px}
.prose p{margin:0 0 1.2em;font-size:1.1rem;color:#33454f}
.prose h2{color:var(--navy);font-size:1.6rem;margin:1.6em 0 .5em}

/* ---------- Formulário de contato ---------- */
.form{max-width:560px;margin:0 auto;display:grid;gap:18px}
.form label{font-weight:600;color:var(--navy);display:block;margin-bottom:6px}
.form input,.form textarea{
  width:100%;font-family:inherit;font-size:1rem;color:var(--ink);
  border:1px solid var(--line);border-radius:12px;padding:13px 15px;background:#fff;
}
.form input:focus,.form textarea:focus{outline:2px solid var(--teal);border-color:var(--teal)}
.form textarea{min-height:140px;resize:vertical}

/* ---------- Rodapé ---------- */
.site-footer{background:var(--navy-700);color:#c4d2d9;padding:54px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:36px;margin-bottom:36px}
.footer-grid .brand img{height:42px}
.site-footer h4{color:#fff;font-size:1rem;margin-bottom:14px}
.site-footer ul{list-style:none}
.site-footer ul li{margin-bottom:9px}
.site-footer a{color:#c4d2d9}
.site-footer a:hover{color:var(--teal)}
.footer-about{max-width:320px;margin-top:14px;font-size:.95rem;color:#a9bcc4}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding-top:22px;
  text-align:center;font-size:.88rem;color:#90a6af;
  position:relative;
}
.footer-dev{
  font-size:.75rem;color:#6a8a96;
  position:absolute;right:0;top:50%;transform:translateY(-50%);
}

/* ---------- Responsivo ---------- */
@media (max-width:820px){
  .nav-links{
    position:fixed;inset:72px 0 auto 0;flex-direction:column;gap:0;
    background:var(--navy);padding:10px 0;
    transform:translateY(-130%);transition:transform .3s;border-bottom:1px solid rgba(255,255,255,.1);
  }
  .nav-links.open{transform:translateY(0)}
  .nav-links li{width:100%;text-align:center}
  .nav-links a{display:block;padding:14px 0}
  .nav-toggle{display:block}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .section{padding:54px 0}
}