/* ==========================================================================
   Victor Grécia — Neurocirurgia
   Paleta e tipografia derivadas da identidade existente:
   ouro da marca (#B68F41 → #E4BE7A), preto do logotipo, sans de traço fino
   e entrelinha larga como no lettering "NEUROCIRURGIA".
   Princípio de layout: um único plano de fundo, sem blocos alternados.
   As seções se separam por espaço e fios de 1px — nunca por caixas.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Jost:wght@300;400;500&family=Inter:wght@300;400;500&display=swap');

:root{
  --paper:      #FCFBF9;
  --ink:        #17171A;
  --body:       #4A4952;
  --muted:      #8A8791;
  --gold:       #B68F41;
  --gold-light: #E4BE7A;
  --hair:       #E6E2DA;
  --hair-soft:  #F0EDE7;

  --f-display: 'Jost', 'Futura', sans-serif;
  --f-body:    'Inter', -apple-system, 'Segoe UI', sans-serif;

  --max: 1080px;
  --narrow: 720px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }

/* o cabeçalho é fixo: reserva a altura dele ao pular para uma âncora */
[id]{ scroll-margin-top:110px; }
#menu-principal{ scroll-margin-top:0; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ transition:none !important; animation:none !important; }
}

body{
  margin:0;
  background: var(--paper);
  color: var(--body);
  font-family: var(--f-body);
  font-weight:300;
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}

img{ max-width:100%; display:block; }
a{ color:inherit; }
:focus-visible{ outline:1px solid var(--gold); outline-offset:4px; }

.container{ max-width:var(--max); margin:0 auto; padding:0 2rem; }
.narrow{ max-width:var(--narrow); }

/* ---------- typography ---------- */
h1,h2,h3{
  font-family:var(--f-display);
  color:var(--ink);
  font-weight:300;
  line-height:1.2;
  margin:0 0 1.25rem;
}
h1{ font-size:clamp(2.3rem,5vw,3.9rem); letter-spacing:-0.015em; }
h2{ font-size:clamp(1.7rem,3.2vw,2.4rem); letter-spacing:-0.01em; }
h3{ font-size:1.15rem; font-weight:400; letter-spacing:0.005em; }

p{ margin:0 0 1.25rem; }
.lede{ font-size:1.18rem; line-height:1.7; color:var(--body); }
.small{ font-size:0.94rem; color:var(--muted); }

.eyebrow{
  font-family:var(--f-display);
  font-weight:400;
  font-size:0.7rem;
  letter-spacing:0.28em;
  text-transform:uppercase;
  color:var(--gold);
  display:block;
  margin-bottom:1.5rem;
}

.rule{ height:1px; background:var(--hair); border:0; margin:0; }

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  font-family:var(--f-display); font-weight:400;
  font-size:0.84rem; letter-spacing:0.14em; text-transform:uppercase;
  padding:1rem 2rem; text-decoration:none; border:1px solid transparent;
  transition:background-color .25s ease, color .25s ease, border-color .25s ease;
}
.btn-solid{ background:var(--ink); color:#fff; }
.btn-solid:hover{ background:var(--gold); }
.btn-line{ border-color:var(--hair); color:var(--ink); }
.btn-line:hover{ border-color:var(--gold); color:var(--gold); }
.btn-sm{ padding:0.7rem 1.4rem; font-size:0.72rem; }

/* ---------- header ---------- */
.site-header{
  position:sticky; top:0; z-index:70;
  background:rgba(252,251,249,0.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--hair-soft);
}
.site-header .container{
  display:flex; align-items:center; justify-content:space-between;
  height:88px;
}
.brand{ display:flex; align-items:center; gap:0.8rem; text-decoration:none; }
.brand .mark{ width:36px; height:auto; flex:none; }
.brand-text{
  font-family:var(--f-display); font-weight:400; font-size:1.3rem;
  letter-spacing:0.005em; color:var(--ink); line-height:1;
  white-space:nowrap;
}

nav.main-nav ul{ display:flex; gap:2.75rem; list-style:none; margin:0; padding:0; }
nav.main-nav a{
  font-family:var(--f-display); font-size:0.82rem; letter-spacing:0.12em;
  text-transform:uppercase; text-decoration:none; color:var(--body);
  padding-bottom:3px; border-bottom:1px solid transparent; transition:.25s;
}
nav.main-nav a:hover, nav.main-nav a[aria-current="page"]{ color:var(--ink); border-bottom-color:var(--gold); }

.nav-actions{ display:flex; align-items:center; gap:1.5rem; }
.site-header nav.main-nav .nav-cta{ display:none; }

/* trava de desktop: o botão dentro do menu só existe no celular */
@media (min-width:721px){
  .site-header nav.main-nav .nav-cta{ display:none !important; }
}
.menu-toggle{
  display:none; position:relative; width:44px; height:44px;
  background:none; border:0; padding:0; cursor:pointer;
}
.menu-toggle .bar{
  position:absolute; left:11px; width:22px; height:1px; background:var(--ink);
  transition:transform .25s ease, opacity .2s ease, top .25s ease;
}
.menu-toggle .bar:nth-child(1){ top:15px; }
.menu-toggle .bar:nth-child(2){ top:21px; }
.menu-toggle .bar:nth-child(3){ top:27px; }
.menu-toggle[aria-expanded="true"] .bar:nth-child(1){ top:21px; transform:rotate(45deg); }
.menu-toggle[aria-expanded="true"] .bar:nth-child(2){ opacity:0; }
.menu-toggle[aria-expanded="true"] .bar:nth-child(3){ top:21px; transform:rotate(-45deg); }

/* ---------- hero ----------
   Cérebro dourado grande, atrás do texto, com transparência.
   O nome sobe para o cabeçalho conforme a página rola (ver js).  */
.hero{
  position:relative; overflow:hidden;
  padding:6rem 0 5.5rem; text-align:center;
}

.hero-brain{
  position:absolute; top:50%; left:50%;
  transform:translate(-50%,-54%);
  width:min(620px,92vw); height:auto;
  opacity:0.16; pointer-events:none; user-select:none;
}

.hero .container{ position:relative; }

.hero-name{ margin:0 0 1rem; }
.hero-name img{
  width:min(360px,74vw); height:auto; margin:0 auto;
}

.hero-especialidade{
  font-family:var(--f-display); font-size:0.76rem; letter-spacing:0.32em;
  text-transform:uppercase; color:var(--gold); margin:0;
}

.hero .gold-line{ margin:2rem auto 2.25rem; }

.hero-sub{
  font-family:var(--f-body); font-weight:300;
  font-size:1.06rem; line-height:1.8; color:var(--body);
  max-width:60ch; margin:0 auto 2.25rem;
}

.hero-tags{
  display:flex; flex-wrap:wrap; justify-content:center;
  align-items:center; gap:0.8rem 1rem; margin:0 auto 2.5rem;
  max-width:64ch; padding:0;
}
.hero-tags span{
  font-family:var(--f-display); font-size:0.68rem; letter-spacing:0.16em;
  text-transform:uppercase; color:var(--ink); white-space:nowrap;
}
.hero-tags span + span::before{
  content:"\2022"; color:var(--gold); margin-right:1rem;
}

.hero-actions{ display:flex; gap:1rem; justify-content:center; flex-wrap:wrap; }

.hero-crm{
  font-family:var(--f-display); font-size:0.7rem; letter-spacing:0.18em;
  text-transform:uppercase; color:var(--muted);
  margin:2.5rem auto 0; padding-top:1.75rem;
  border-top:1px solid var(--hair); max-width:34rem;
}

/* ---------- nome no cabeçalho ----------
   Ao carregar, o cabeçalho mostra só o cérebro. Quando o nome da capa
   sai da tela, ele aparece aqui, deslizando da esquerda.            */
.brand-text{
  opacity:0; transform:translateX(-10px);
  transition:opacity .45s ease, transform .45s ease;
}
.site-header.mostra-nome .brand-text{
  opacity:1; transform:translateX(0);
}
/* páginas internas não têm capa: o nome aparece de imediato */
.site-header.sem-capa .brand-text{ opacity:1; transform:none; transition:none; }

@media (prefers-reduced-motion: reduce){
  .brand-text{ opacity:1; transform:none; transition:none; }
}

/* ---------- section rhythm ---------- */
section{ padding:7rem 0; }
section + section{ padding-top:0; }
.section-head{ max-width:60ch; margin-bottom:3.5rem; }

.split{ display:grid; grid-template-columns:1fr 1fr; gap:5rem; }
.split > div > h3{ margin-bottom:0.9rem; }

.textlink{
  font-family:var(--f-display); font-size:0.78rem; letter-spacing:0.14em;
  text-transform:uppercase; text-decoration:none; color:var(--gold);
  border-bottom:1px solid var(--hair); padding-bottom:2px; transition:.25s;
}
.textlink:hover{ border-bottom-color:var(--gold); }

/* ---------- signals list ---------- */
.signals{ list-style:none; margin:0; padding:0; columns:2; column-gap:4rem; }
.signals li{
  break-inside:avoid; padding:1.1rem 0; border-top:1px solid var(--hair-soft);
  font-size:1rem; line-height:1.6;
}

/* ---------- sobre / retrato ---------- */
.about{ display:grid; grid-template-columns:0.85fr 1.15fr; gap:4.5rem; align-items:start; }
.about img.portrait{ width:100%; height:auto; filter:grayscale(10%); }
.about .caption{
  font-family:var(--f-display); font-size:0.7rem; letter-spacing:0.18em;
  text-transform:uppercase; color:var(--muted); margin-top:0.75rem;
}


/* ---------- página de tema ---------- */
.topic{ max-width:var(--narrow); }
.topic h2{ margin-top:3.5rem; }
.topic h2:first-of-type{ margin-top:2.5rem; }
.topic .gold-line{ margin-left:0; }

/* ---------- atendimento ---------- */
.places{ display:grid; grid-template-columns:1.2fr 1fr 1fr; gap:3.5rem; }
.place h3{ margin-bottom:0.5rem; }
.place p{ margin-bottom:0.6rem; font-size:0.97rem; }
.place .tag{
  font-family:var(--f-display); font-size:0.66rem; letter-spacing:0.2em;
  text-transform:uppercase; color:var(--gold); display:block; margin-bottom:0.7rem;
}
.place a{ text-decoration:none; border-bottom:1px solid var(--hair); }
.place a:hover{ border-bottom-color:var(--gold); }

/* ---------- closing ---------- */
.closing{ text-align:center; }
.closing h2{ max-width:20ch; margin-left:auto; margin-right:auto; }
.closing .lede{ max-width:48ch; margin:0 auto 2.5rem; }

/* ---------- footer ---------- */
.site-footer{ background:var(--ink); color:#A9A7B0; padding:5rem 0 2.5rem; }
.site-footer .footer-top{
  display:grid; grid-template-columns:1.3fr 1fr 1fr 1fr; gap:3rem; align-items:start;
}
.site-footer img.sig{ width:150px; margin-bottom:1.5rem; }
.site-footer h4{
  font-family:var(--f-display); font-weight:400; color:#fff;
  font-size:0.72rem; letter-spacing:0.2em; text-transform:uppercase; margin:0 0 1.1rem;
}
.site-footer ul{ list-style:none; margin:0; padding:0; display:grid; gap:0.7rem; font-size:0.92rem; }
.site-footer a{ text-decoration:none; color:#A9A7B0; transition:.25s; }
.site-footer a:hover{ color:var(--gold-light); }
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.1); margin-top:3.5rem; padding-top:1.75rem;
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:0.6rem;
  font-family:var(--f-display); font-size:0.7rem; letter-spacing:0.1em; color:#6E6C77;
}

/* ---------- whatsapp ---------- */
.wa{
  position:fixed; right:1.5rem; bottom:1.5rem; z-index:50;
  width:54px; height:54px; border-radius:50%; background:#25D366;
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 4px 16px rgba(0,0,0,.18);
}
.wa svg{ width:26px; height:26px; }

/* ---------- responsive ---------- */
@media (max-width:900px){
  .split{ grid-template-columns:1fr; gap:3rem; }
  .about{ grid-template-columns:1fr; gap:2rem; }
  .about img.portrait{ max-width:320px; }
  .places{ grid-template-columns:1fr 1fr; gap:2.5rem; }
  .site-footer .footer-top{ grid-template-columns:1fr 1fr; }
}

@media (max-width:720px){
  .container{ padding:0 1.5rem; }
  section{ padding:4.5rem 0; }
  .hero{ padding:4rem 0 3.5rem; }
  .hero-brain{ width:min(420px,96vw); opacity:0.13; }
  .hero-sub{ font-size:1rem; }
  .hero-tags{ flex-direction:column; gap:0.85rem; }
  .hero-tags span + span::before{ content:none; }
  .hero-crm{ margin-top:2.5rem; }
  .signals{ columns:1; }
  .places{ grid-template-columns:1fr; }
  .site-footer .footer-top{ grid-template-columns:1fr; gap:2.5rem; }
  .creds .container{ gap:0.5rem 2rem; font-size:0.68rem; }
  .hero-crm{ font-size:0.62rem; letter-spacing:0.12em; }
  [id]{ scroll-margin-top:100px; }
  .brand-text{ font-size:1.1rem; }
  .brand .mark{ width:30px; }

  /* backdrop-filter cria bloco de contenção e quebra o position:fixed
     do menu; no celular o cabeçalho fica com fundo sólido. */
  .site-header{ backdrop-filter:none; background:var(--paper); }

  /* O menu não fica no topo: some por completo e abre como
     sobreposição de tela cheia, por baixo do cabeçalho. */
  nav.main-nav{
    position:fixed; inset:0; z-index:60;
    background:var(--paper);
    padding:calc(88px + 3rem) 1.5rem 3rem;
    display:none; overflow-y:auto;
    -webkit-overflow-scrolling:touch;
  }
  nav.main-nav.open{ display:block; }
  nav.main-nav ul{ flex-direction:column; gap:0; }
  nav.main-nav li{ border-bottom:1px solid var(--hair-soft); }
  nav.main-nav li:first-child{ border-top:1px solid var(--hair-soft); }
  nav.main-nav li a{
    display:block; font-family:var(--f-display);
    font-size:1.35rem; letter-spacing:0.02em; text-transform:none;
    color:var(--ink); padding:1.3rem 0; border-bottom:0;
  }
  nav.main-nav li a:hover, nav.main-nav li a[aria-current="page"]{ border-bottom:0; color:var(--gold); }
  /* o botão mantém o próprio estilo, sem herdar o dos links da lista */
  nav.main-nav .nav-cta .btn-solid{ color:#fff; background:var(--ink); }
  .site-header nav.main-nav .nav-cta{ display:block; margin-top:3rem; }
  nav.main-nav .nav-cta .btn{ width:100%; }

  body.nav-open{ overflow:hidden; }

  /* a camada do menu tem z-index 60; o botão precisa ficar acima dela
     para poder fechar o menu */
  .nav-actions{ position:relative; z-index:80; }
  .menu-toggle{ display:inline-flex; }
  .nav-actions > .btn{ display:none; }
}