/* =========================================================================
   Dr. Paulo Xander — Cirurgia da Coluna & Neurocirurgia
   Design system: editorial medical journal — ink navy / warm ivory / surgical teal
   ========================================================================= */

:root{
  /* --- Color tokens --- */
  --ink:        #10203A;   /* primary text, dark surfaces */
  --navy:       #1B3F73;   /* brand blue — buttons, links, emphasis */
  --navy-deep:  #0E2A52;   /* darkest band background (contato/CTA) */
  --paper:      #F6F2EA;   /* main warm ivory background */
  --bone:       #ECE4D3;   /* secondary section band */
  --teal:       #34675C;   /* accent — used sparingly */
  --teal-light: #4C8478;
  --hairline:   #D9D2BF;   /* dividers on paper/bone */
  --hairline-dark: rgba(246,242,234,0.18);
  --slate:      #57616F;   /* muted text on light */
  --cream-text: #F3EFE6;   /* text on dark bands */
  --cream-mute: rgba(243,239,230,0.72);
  --shadow-soft: 0 24px 48px -28px rgba(16,32,58,0.35);

  /* --- Type scale (fluid) --- */
  --fs-display: clamp(2.5rem, 1.55rem + 3.6vw, 4.4rem);
  --fs-h2:      clamp(1.9rem, 1.5rem + 1.8vw, 2.9rem);
  --fs-h3:      clamp(1.2rem, 1.08rem + 0.5vw, 1.5rem);
  --fs-lead:    clamp(1.08rem, 1rem + 0.4vw, 1.3rem);
  --fs-body:    clamp(1rem, 0.96rem + 0.15vw, 1.09rem);
  --fs-small:   0.9rem;
  --fs-label:   0.82rem;

  /* --- Spacing scale --- */
  --sp-1: 0.5rem;
  --sp-2: 1rem;
  --sp-3: 1.75rem;
  --sp-4: 2.75rem;
  --sp-5: 4.5rem;
  --sp-6: 7rem;

  --maxw: 1240px;
  --radius-signature: 120px 0 120px 0;
}

/* --- Reset --- */
*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important; scroll-behavior:auto !important; }
}
body{
  margin:0;
  font-family:'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size:var(--fs-body);
  line-height:1.6;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3,p,ul,figure{ margin:0; }
ul{ padding:0; list-style:none; }
button{ font-family:inherit; cursor:pointer; }

h1,h2,h3,.serif{ font-family:'Fraunces', Georgia, serif; font-weight:560; letter-spacing:-0.01em; }

.container{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:clamp(1.25rem, 4vw, 3rem);
}

:focus-visible{ outline:2.5px solid var(--teal); outline-offset:3px; border-radius:2px; }

.skip-link{
  position:absolute; left:-999px; top:0;
  background:var(--navy); color:var(--cream-text); padding:0.75rem 1.25rem; z-index:200;
}
.skip-link:focus{ left:1rem; top:1rem; }

/* =========================== Header / Nav =========================== */
.site-header{
  position:sticky; top:0; z-index:100;
  background:rgba(246,242,234,0.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color 0.3s ease, box-shadow 0.3s ease;
}
.site-header.is-scrolled{
  border-color:var(--hairline);
  box-shadow:0 8px 24px -20px rgba(16,32,58,0.4);
}
.nav-row{
  display:flex; align-items:center; justify-content:space-between;
  padding-block:1.1rem;
}
.brand{ display:flex; align-items:center; }
.brand img{ height:40px; width:auto; display:block; }

.nav-links{
  display:flex; align-items:center; gap:var(--sp-4);
}
.nav-links a{
  font-size:0.95rem; color:var(--ink); position:relative; padding-block:0.25rem;
}
.nav-links a::after{
  content:""; position:absolute; left:0; right:0; bottom:-2px; height:1px;
  background:var(--teal); transform:scaleX(0); transform-origin:left; transition:transform 0.25s ease;
}
.nav-links a:hover::after{ transform:scaleX(1); }

.btn{
  display:inline-flex; align-items:center; gap:0.5rem;
  font-size:0.95rem; font-weight:600; letter-spacing:0.01em;
  padding:0.85rem 1.6rem; border-radius:100px; border:1.5px solid transparent;
  transition:transform 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  white-space:nowrap;
}
.btn-primary{ background:var(--navy); color:var(--cream-text); }
.btn-primary:hover{ background:var(--teal); transform:translateY(-1px); }
.btn-ghost{ border-color:var(--ink); color:var(--ink); }
.btn-ghost:hover{ background:var(--ink); color:var(--paper); }
.btn-on-dark{ border-color:var(--cream-text); color:var(--cream-text); }
.btn-on-dark:hover{ background:var(--cream-text); color:var(--navy-deep); }
.btn-sm{ padding:0.65rem 1.25rem; font-size:0.88rem; }

.nav-cta{ display:flex; align-items:center; gap:0.75rem; }

.nav-toggle{
  display:none; background:none; border:none; width:40px; height:32px; position:relative;
}
.nav-toggle span{
  position:absolute; left:6px; right:6px; height:2px; background:var(--ink);
  transition:transform 0.25s ease, opacity 0.25s ease;
}
.nav-toggle span:nth-child(1){ top:9px; }
.nav-toggle span:nth-child(2){ top:16px; }
.nav-toggle span:nth-child(3){ top:23px; }
.nav-toggle.is-open span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2){ opacity:0; }
.nav-toggle.is-open span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }

/* =========================== Hero =========================== */
.hero{ padding-top:clamp(2.5rem, 6vw, 5rem); overflow:hidden; }
.hero-grid{
  display:grid; grid-template-columns:1.05fr 0.95fr; gap:clamp(2rem, 4vw, 4rem);
  align-items:center;
}
.hero-copy .kicker{
  font-size:var(--fs-label); color:var(--teal); font-weight:600; letter-spacing:0.02em;
  margin-bottom:1rem; display:block;
}
.hero-copy h1{
  font-size:var(--fs-display); line-height:1.06; color:var(--ink);
}
.hero-copy h1 em{ font-style:italic; color:var(--navy); }
.hero-copy .lead{
  font-size:var(--fs-lead); color:var(--slate); margin-top:1.5rem; max-width:34rem;
}
.hero-actions{ display:flex; gap:1rem; margin-top:2.25rem; flex-wrap:wrap; }
.hero-credentials{
  margin-top:2.75rem; padding-top:1.5rem; border-top:1px solid var(--hairline);
  display:flex; gap:2.5rem; flex-wrap:wrap;
}
.hero-credentials div{ font-size:0.85rem; color:var(--slate); }
.hero-credentials strong{ display:block; font-family:'Fraunces',serif; font-size:1.35rem; color:var(--ink); font-weight:560; }

.hero-photo{ position:relative; }
.hero-photo .frame{
  position:relative; border-radius:var(--radius-signature); overflow:hidden;
  aspect-ratio:3/4; box-shadow:var(--shadow-soft);
}
.hero-photo img{
  width:100%; height:100%; object-fit:cover; object-position:50% 18%;
  filter:grayscale(0.28) contrast(1.06) saturate(0.92);
}
.hero-photo .frame::after{
  content:""; position:absolute; inset:0;
  background:linear-gradient(200deg, rgba(27,63,115,0.28), rgba(14,42,82,0.06) 45%, transparent 70%);
  mix-blend-mode:multiply;
}
.hero-photo .tag{
  position:absolute; left:-1.25rem; bottom:1.75rem; background:var(--paper);
  padding:0.9rem 1.4rem; border-radius:4px; box-shadow:var(--shadow-soft);
  font-size:0.85rem; max-width:15rem;
}
.hero-photo .tag strong{ display:block; color:var(--navy); font-family:'Fraunces',serif; font-size:1.05rem; font-weight:560; }

/* =========================== Section shells =========================== */
.section{ padding-block:var(--sp-6); }
.section-bone{ background:var(--bone); }
.section-head{ max-width:42rem; margin-bottom:var(--sp-5); }
.section-head .kicker{ font-size:var(--fs-label); color:var(--teal); font-weight:600; letter-spacing:0.02em; display:block; margin-bottom:0.9rem; }
.section-head h2{ font-size:var(--fs-h2); line-height:1.12; color:var(--ink); }
.section-head p{ margin-top:1.1rem; font-size:var(--fs-lead); color:var(--slate); }

/* =========================== Especialidades =========================== */
.specialty-grid{
  display:grid; grid-template-columns:repeat(3, 1fr); gap:clamp(1.75rem, 3vw, 3rem);
}
.specialty-card{ border-top:2px solid var(--ink); padding-top:1.75rem; }
.specialty-card .icon{ width:52px; height:52px; color:var(--teal); margin-bottom:1.5rem; }
.specialty-card h3{ font-size:var(--fs-h3); color:var(--ink); margin-bottom:0.4rem; }
.specialty-card .sub{ font-size:0.85rem; color:var(--teal); font-weight:600; margin-bottom:1.1rem; display:block; }
.specialty-card ul{ display:flex; flex-direction:column; gap:0.55rem; }
.specialty-card li{ font-size:0.93rem; color:var(--slate); padding-left:1rem; position:relative; }
.specialty-card li::before{
  content:""; position:absolute; left:0; top:0.55em; width:5px; height:5px;
  background:var(--teal); border-radius:50%;
}

/* =========================== Sobre =========================== */
.about-grid{
  display:grid; grid-template-columns:0.85fr 1.15fr; gap:clamp(2.5rem, 5vw, 5rem);
  align-items:start;
}
.about-photo .frame{
  border-radius:0 120px 0 120px; overflow:hidden; aspect-ratio:4/5; box-shadow:var(--shadow-soft);
}
.about-photo img{
  width:100%; height:100%; object-fit:cover; object-position:50% 12%;
}
.about-photo figcaption{ margin-top:1.1rem; font-size:0.85rem; color:var(--slate); text-align:center; }
.about-copy .kicker{ font-size:var(--fs-label); color:var(--teal); font-weight:600; letter-spacing:0.02em; display:block; margin-bottom:0.9rem; }
.about-copy h2{ font-size:var(--fs-h2); color:var(--ink); line-height:1.14; }
.about-copy > p{ margin-top:1.25rem; font-size:var(--fs-lead); color:var(--slate); max-width:38rem; }

.timeline{ margin-top:var(--sp-4); display:flex; flex-direction:column; }
.timeline li{
  display:grid; grid-template-columns:2.75rem 1fr; gap:1.25rem;
  padding-block:1.15rem; border-top:1px solid var(--hairline);
  opacity:0; transform:translateY(10px); transition:opacity 0.6s ease, transform 0.6s ease;
}
.timeline li.is-visible{ opacity:1; transform:translateY(0); }
.timeline li:last-child{ border-bottom:1px solid var(--hairline); }
.timeline .num{ font-family:'Fraunces',serif; font-size:1.1rem; color:var(--teal); font-weight:560; }
.timeline h4{ font-family:'Fraunces',serif; font-weight:560; font-size:1.05rem; color:var(--ink); margin-bottom:0.25rem; }
.timeline p{ font-size:0.92rem; color:var(--slate); }

/* =========================== Tratamentos =========================== */
.treatment-list{ display:flex; flex-direction:column; }
.treatment-row{
  display:grid; grid-template-columns:1.6fr 2.4fr; gap:clamp(1.5rem, 4vw, 4rem);
  padding-block:var(--sp-3); border-top:1px solid var(--hairline);
  align-items:baseline;
}
.treatment-list .treatment-row:last-child{ border-bottom:1px solid var(--hairline); }
.treatment-row h3{ font-size:var(--fs-h3); color:var(--ink); }
.treatment-row p{ color:var(--slate); font-size:0.98rem; }
.treatment-row .idx{ font-size:0.82rem; color:var(--teal); font-weight:600; display:block; margin-bottom:0.5rem; }

/* =========================== Depoimentos =========================== */
.testi-grid{
  display:grid; grid-template-columns:0.9fr 1.6fr; gap:clamp(2rem, 4vw, 4rem); align-items:center;
}
.rating-card{
  border:1px solid var(--hairline); border-radius:4px; padding:2rem; text-align:center;
  background:var(--paper);
}
.rating-card .stars{ color:var(--teal); font-size:1.3rem; letter-spacing:0.18em; margin-bottom:0.75rem; }
.rating-card .score{ font-family:'Fraunces',serif; font-size:3rem; font-weight:560; color:var(--ink); line-height:1; }
.rating-card .count{ font-size:0.88rem; color:var(--slate); margin-top:0.5rem; }
.rating-card .platform{ font-size:0.78rem; color:var(--slate); margin-top:1.25rem; text-transform:uppercase; letter-spacing:0.08em; }

.quote-block{ display:flex; gap:1.5rem; align-items:flex-start; }
.quote-block .avatar-initial{
  width:64px; height:64px; border-radius:50%; background:var(--bone); color:var(--navy);
  display:flex; align-items:center; justify-content:center; flex-shrink:0;
  font-family:'Fraunces',serif; font-size:1.4rem; font-weight:560;
}
.quote-block blockquote{ font-family:'Fraunces',serif; font-size:1.35rem; line-height:1.4; color:var(--ink); font-weight:500; font-style:italic; }
.quote-block cite{ display:block; margin-top:1rem; font-family:'Inter',sans-serif; font-style:normal; font-size:0.88rem; color:var(--slate); }

/* =========================== Contato / CTA final =========================== */
.contact-band{
  position:relative; background:var(--navy-deep); color:var(--cream-text); overflow:hidden;
}
.contact-band .bg-photo{
  position:absolute; inset:0; z-index:0;
}
.contact-band .bg-photo img{
  width:100%; height:100%; object-fit:cover; object-position:70% 30%;
  filter:grayscale(0.5) brightness(0.55);
}
.contact-band .bg-photo::after{
  content:""; position:absolute; inset:0;
  background:linear-gradient(100deg, rgba(14,42,82,0.97) 0%, rgba(14,42,82,0.9) 38%, rgba(14,42,82,0.55) 75%);
}
.contact-band .container{ position:relative; z-index:1; padding-block:var(--sp-6); }
.contact-grid{ display:grid; grid-template-columns:1.15fr 0.85fr; gap:clamp(2rem, 5vw, 5rem); }
.contact-copy .kicker{ font-size:var(--fs-label); color:#9FC4B8; font-weight:600; letter-spacing:0.02em; display:block; margin-bottom:0.9rem; }
.contact-copy h2{ font-size:var(--fs-h2); line-height:1.1; color:var(--cream-text); max-width:22ch; }
.contact-copy p{ margin-top:1.25rem; font-size:var(--fs-lead); color:var(--cream-mute); max-width:32rem; }
.contact-actions{ display:flex; gap:1rem; margin-top:2.25rem; flex-wrap:wrap; }

.contact-card{
  background:rgba(246,242,234,0.06); border:1px solid var(--hairline-dark);
  border-radius:4px; padding:2.25rem;
}
.contact-card dl{ display:flex; flex-direction:column; gap:1.4rem; }
.contact-card dt{ font-size:0.78rem; text-transform:uppercase; letter-spacing:0.06em; color:#9FC4B8; margin-bottom:0.3rem; }
.contact-card dd{ font-size:1.02rem; color:var(--cream-text); }
.contact-card a{ border-bottom:1px solid var(--hairline-dark); }
.contact-card a:hover{ border-color:var(--cream-text); }

/* =========================== Footer =========================== */
.site-footer{ background:var(--ink); color:var(--cream-mute); padding-block:var(--sp-4); }
.footer-row{
  display:flex; justify-content:space-between; align-items:center; gap:1.5rem; flex-wrap:wrap;
  padding-top:var(--sp-3); border-top:1px solid rgba(243,239,230,0.12); margin-top:var(--sp-4);
}
.footer-top{ display:flex; justify-content:space-between; gap:2rem; flex-wrap:wrap; }
.footer-brand{ display:inline-block; }
.footer-brand img{ height:34px; width:auto; display:block; }
.footer-cols{ display:flex; gap:3rem; flex-wrap:wrap; }
.footer-col h5{ font-size:0.78rem; text-transform:uppercase; letter-spacing:0.06em; color:#9FC4B8; margin-bottom:0.9rem; }
.footer-col a, .footer-col p{ font-size:0.92rem; color:var(--cream-mute); display:block; margin-bottom:0.5rem; }
.footer-col a:hover{ color:var(--cream-text); }
.legal{ font-size:0.8rem; color:rgba(243,239,230,0.55); }
.legal a{ color:inherit; text-decoration:underline; text-decoration-color:rgba(243,239,230,0.3); }

/* =========================== WhatsApp float =========================== */
.wa-float{
  position:fixed; right:1.5rem; bottom:1.5rem; z-index:150;
  width:58px; height:58px; border-radius:50%; background:#25D366; color:#fff;
  display:flex; align-items:center; justify-content:center; box-shadow:var(--shadow-soft);
  transition:transform 0.2s ease;
}
.wa-float:hover{ transform:scale(1.06); }
.wa-float svg{ width:28px; height:28px; }

/* =========================== Utility / responsive =========================== */
.sr-only{ position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0,0,0,0); }

@media (max-width: 980px){
  .nav-links{ display:none; }
  .nav-toggle{ display:block; }
  .nav-links.is-open{
    display:flex; flex-direction:column; position:absolute; top:100%; left:0; right:0;
    background:var(--paper); padding:1.5rem clamp(1.25rem,4vw,3rem) 2rem; gap:1.25rem;
    border-bottom:1px solid var(--hairline); box-shadow:var(--shadow-soft);
  }
  .hero-grid, .about-grid, .contact-grid, .testi-grid{ grid-template-columns:1fr; }
  .hero-photo{ order:-1; max-width:22rem; margin-inline:auto; }
  .hero-copy .lead{ max-width:none; }
  .specialty-grid{ grid-template-columns:1fr; gap:2.5rem; }
  .treatment-row{ grid-template-columns:1fr; gap:0.75rem; }
  .quote-block{ flex-direction:column; }
  .contact-copy h2{ max-width:none; }
  .footer-top{ flex-direction:column; gap:2rem; }
  .footer-row{ flex-direction:column; align-items:flex-start; }
  :root{ --sp-6: 4.5rem; }
}

@media (max-width: 560px){
  .hero-actions, .contact-actions{ flex-direction:column; align-items:stretch; }
  .hero-credentials{ gap:1.5rem; }
  .hero-photo .tag{ left:0; right:1rem; bottom:-1.25rem; max-width:none; }
  .brand img{ height:32px; }
  .nav-cta{ gap:0.5rem; }
  .nav-cta .btn-sm{ padding:0.6rem 0.9rem; font-size:0.8rem; }
}