/* BeZan Ortodontia — base compartilhada (público) */

:root{
  --verde:#1E7A3D;
  --verde-escuro:#14532A;
  --amarelo:#F5C518;
  --osso:#F7F6F2;
  --grafite:#1C1F1D;
  --cinza:#5B615C;
  --linha:#E3E5E0;
  --branco:#fff;
  --max:1120px;
  --r:10px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Inter',system-ui,sans-serif;
  color:var(--grafite);
  background:var(--osso);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{font-family:'Fraunces',Georgia,serif;font-weight:600;line-height:1.1;color:var(--verde-escuro);margin:0 0 .4em}
a{color:var(--verde);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}

/* label utilitária */
.eyebrow{font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--verde);font-weight:600;margin:0 0 .8rem}

/* ---- Header ---- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--linha)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand img{height:38px;width:auto}
.nav{display:flex;gap:28px;align-items:center}
.nav a{color:var(--grafite);font-weight:500;font-size:.95rem;text-decoration:none}
.nav a:hover,.nav a.active{color:var(--verde)}
.nav a.active{position:relative}
.nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--amarelo)}
.nav-toggle{display:none;background:none;border:0;font-size:1.6rem;color:var(--verde-escuro);cursor:pointer}

/* ---- Botões ---- */
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.8rem 1.4rem;border-radius:var(--r);font-weight:600;font-size:.95rem;border:1.5px solid transparent;cursor:pointer;transition:.15s}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--verde);color:#fff}
.btn-primary:hover{background:var(--verde-escuro)}
.btn-ghost{background:transparent;color:var(--verde-escuro);border-color:var(--linha)}
.btn-ghost:hover{border-color:var(--verde)}

/* ---- Hero ---- */
.hero{padding:88px 0 72px}
.hero h1{font-size:clamp(2.6rem,6vw,4.6rem);letter-spacing:-.02em}
.hero .arc{width:min(520px,80%);margin:.2rem 0 1.8rem;height:auto;display:block}
.hero .arc path{fill:none;stroke:var(--amarelo);stroke-width:10;stroke-linecap:round}
.hero-lead{font-size:1.15rem;color:var(--cinza);max-width:46ch;margin:0 0 2rem}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}

/* animação de draw do arco */
@media (prefers-reduced-motion:no-preference){
  .hero .arc path{stroke-dasharray:600;stroke-dashoffset:600;animation:draw 1.1s .3s ease-out forwards}
}
@keyframes draw{to{stroke-dashoffset:0}}

/* ---- Seções ---- */
.section{padding:64px 0}
.section-head{max-width:640px;margin:0 0 40px}
.section-head h2{font-size:clamp(1.8rem,3.5vw,2.6rem)}
.section-head p{color:var(--cinza);font-size:1.05rem}

/* faixa imagem + texto */
.feature-split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.feature-media{border-radius:var(--r);overflow:hidden;aspect-ratio:4/3}
.feature-media img{width:100%;height:100%;object-fit:cover}
.feature-text h2{font-size:clamp(1.6rem,3vw,2.3rem)}
.feature-text p{color:var(--cinza);font-size:1.05rem;margin-bottom:1.6rem}

/* faixa de destaque */
.strip{background:var(--verde-escuro);color:#fff}
.strip h2,.strip .eyebrow{color:#fff}
.strip .eyebrow{opacity:.85}
.strip p{color:rgba(255,255,255,.85)}

/* ---- Grid de cards ---- */
.grid{display:grid;gap:20px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--linha);border-radius:var(--r);overflow:hidden;transition:.15s}
.card:hover{border-color:var(--verde);transform:translateY(-2px)}
.card .thumb{aspect-ratio:4/3;overflow:hidden;position:relative;
  background:linear-gradient(135deg,#f0f4ef 0%,#e6eee7 100%);
  display:flex;align-items:center;justify-content:center}
/* marca-d'água discreta no placeholder (dente estilizado), atrás da eventual imagem */
.card .thumb::after{content:"";position:absolute;width:44px;height:44px;opacity:.28;
  background:no-repeat center/contain url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231E7A3D' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 5.5c-1.6-1.6-4-2-5.7-1C4.3 5.7 4 8 4.6 10.4c.4 1.6.5 2.3.7 4.2.2 2 .6 4.4 1.7 4.4 1 0 1.2-1.6 1.6-3.2.3-1.3.7-2.3 1.4-2.3s1.1 1 1.4 2.3c.4 1.6.6 3.2 1.6 3.2 1.1 0 1.5-2.4 1.7-4.4.2-1.9.3-2.6.7-4.2C20.1 8 19.8 5.7 17.9 4.5c-1.8-1.1-4.2-.6-5.9 1Z'/%3E%3C/svg%3E")}
.card .thumb img{width:100%;height:100%;object-fit:cover;position:relative;z-index:1}
.card .body{padding:20px}
.card h3{font-size:1.15rem;margin-bottom:.3rem}
.card p{color:var(--cinza);font-size:.95rem;margin:0}
.card .tag{display:inline-block;font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--verde);font-weight:600;margin-bottom:.6rem}

/* filtro de categorias */
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:32px}
.filters a{padding:.5rem 1rem;border:1px solid var(--linha);border-radius:999px;font-size:.88rem;color:var(--grafite);background:#fff}
.filters a:hover{border-color:var(--verde);text-decoration:none}
.filters a.active{background:var(--verde);color:#fff;border-color:var(--verde)}

/* empty state */
.empty{text-align:center;padding:60px 20px;color:var(--cinza)}

/* ---- Artigo ---- */
.article-body{max-width:70ch;font-size:1.08rem}
.article-body h2{font-size:1.6rem;margin-top:1.8em}
.article-body img{border-radius:var(--r);margin:1.5em 0}
.meta{color:var(--cinza);font-size:.9rem;margin-bottom:1.5rem}

/* ---- Contato ---- */
.contact-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:48px}
.field{margin-bottom:18px}
.field label{display:block;font-size:.85rem;font-weight:600;margin-bottom:.4rem;color:var(--verde-escuro)}
.field input,.field textarea{width:100%;padding:.75rem .9rem;border:1px solid var(--linha);border-radius:var(--r);font:inherit;background:#fff}
.field input:focus,.field textarea:focus{outline:2px solid var(--verde);border-color:transparent}
.info-item{margin-bottom:1.4rem}
.info-item .k{font-size:.75rem;letter-spacing:.12em;text-transform:uppercase;color:var(--verde);font-weight:600}
.info-item .v{font-size:1.05rem}
.alert{padding:1rem 1.2rem;border-radius:var(--r);margin-bottom:1.5rem}
.alert-ok{background:#e7f5ec;color:var(--verde-escuro);border:1px solid #bfe3cc}
.alert-err{background:#fdecec;color:#8a1c1c;border:1px solid #f3c2c2}

/* ---- Footer ---- */
.site-footer{background:var(--verde-escuro);color:rgba(255,255,255,.8);padding:48px 0 32px;margin-top:64px}
.site-footer .wrap{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap}
.site-footer a{color:#fff}
.site-footer h4{color:#fff;font-family:'Inter';font-size:.8rem;letter-spacing:.1em;text-transform:uppercase;margin:0 0 1rem}
.site-footer ul{list-style:none;padding:0;margin:0;line-height:2}
.foot-brand{max-width:280px}
.foot-brand p{font-size:.9rem}
.copy{border-top:1px solid rgba(255,255,255,.15);margin-top:32px;padding-top:20px;font-size:.85rem;color:rgba(255,255,255,.6)}

/* ---- Responsivo ---- */
@media (max-width:820px){
  .grid-3,.grid-2,.contact-grid,.feature-split{grid-template-columns:1fr}
  .nav{position:fixed;inset:72px 0 auto 0;flex-direction:column;background:var(--osso);padding:20px 24px;border-bottom:1px solid var(--linha);gap:18px;display:none}
  .nav.open{display:flex}
  .nav-toggle{display:block}
}