/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(12, 12, 12, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration) var(--ease);
}
.site-header.is-scrolled { border-bottom-color: var(--color-bg-alt); }
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-3);
  gap: var(--space-4);
}
.site-header__logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}
/* Hamburger button — visible on mobile only */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0.4rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-ink);
  flex-shrink: 0;
  margin-left: auto;
}
.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--duration) var(--ease), opacity var(--duration) var(--ease);
  transform-origin: center;
}
.nav-is-open .nav-toggle__bar:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-is-open .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-is-open .nav-toggle__bar:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
@media (min-width: 900px) { .nav-toggle { display: none; } }

/* Desktop nav */
.site-nav { display: none; }
@media (min-width: 900px) {
  .site-nav {
    display: flex;
    gap: var(--space-5);
    align-items: center;
  }
}
.site-nav a {
  font-size: var(--fs-small);
  letter-spacing: 0.02em;
  transition: color var(--duration) var(--ease);
}
.site-nav a:hover { color: var(--color-accent); }

/* Mobile nav panel — shown when hamburger is open */
@media (max-width: 899px) {
  .site-header { position: relative; }
  .site-header.nav-is-open .site-nav {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 2px solid var(--color-bg-alt);
    box-shadow: 0 8px 24px -8px rgba(0, 0, 0, 0.5);
    padding-bottom: var(--space-4);
    z-index: 10;
  }
  .site-header.nav-is-open .site-nav a:not(.btn) {
    padding: var(--space-3) var(--space-5);
    font-size: 1rem;
    letter-spacing: 0;
    border-bottom: 1px solid var(--color-bg-alt);
  }
  .site-header.nav-is-open .site-nav .btn {
    align-self: flex-start;
    margin: var(--space-4) var(--space-5) 0;
  }
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.85rem 1.5rem;
  font-size: var(--fs-small);
  font-weight: 500;
  letter-spacing: 0.04em;
  border-radius: var(--radius);
  transition: all var(--duration) var(--ease);
}
.btn--primary {
  background: var(--color-accent);
  color: var(--color-bg);
}
.btn--primary:hover { background: var(--color-accent-dk); }
.btn--ghost {
  border: 1px solid var(--color-ink);
  color: var(--color-ink);
}
.btn--ghost:hover { background: var(--color-ink); color: var(--color-bg); }
.btn--inline {
  padding: 0;
  background: none;
  color: var(--color-accent);
  border-bottom: 1px solid currentColor;
  border-radius: 0;
}

/* ===== Hero ===== */
.hero {
  padding-block: var(--space-8) var(--space-7);
  min-height: 85svh;
  display: flex;
  align-items: center;
  background: radial-gradient(ellipse at 30% 60%, rgba(200, 184, 154, 0.07) 0%, transparent 55%);
}
.hero__text {
  max-width: 44rem;
  margin-inline: auto;
  text-align: center;
}
.hero__ctas {
  justify-content: center;
}
.hero h1 {
  margin-bottom: var(--space-4);
  font-size: clamp(2.5rem, 4vw + 1rem, 5rem);
}
.hero h1 em {
  color: var(--color-accent);
  font-style: normal;
}
.hero__lede { margin-bottom: var(--space-5); }
.hero__ctas { display: flex; flex-wrap: wrap; gap: var(--space-3); }

/* ===== Credibility strip ===== */
.cred-strip {
  background: var(--color-bg-alt);
  padding-block: var(--space-4);
  text-align: center;
  font-size: var(--fs-small);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}
.cred-strip span { margin-inline: var(--space-3); }

/* ===== Pain block ===== */
.pain {
  padding-block: var(--space-7);
}
.pain p {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2vw + 1rem, 2.25rem);
  line-height: 1.35;
  max-width: 32ch;
}
.pain strong { color: var(--color-accent); font-weight: 500; }
.pain__caption {
  margin-top: var(--space-4);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  color: var(--color-ink-soft);
  font-style: italic;
  max-width: 50ch;
}

/* ===== Cards (Tipos de Hérnia) ===== */
.cards {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-5);
}
@media (min-width: 768px) {
  .cards { grid-template-columns: repeat(3, 1fr); gap: var(--space-5); }
}
.card {
  background: var(--color-bg-alt);
  padding: var(--space-5);
  border: 1px solid rgba(240, 237, 231, 0.08);
  transition: transform var(--duration) var(--ease), border-color var(--duration) var(--ease);
}
.card:hover { transform: translateY(-2px); border-color: var(--color-accent); }
.card svg { width: 64px; height: 64px; margin-bottom: var(--space-4); color: var(--color-accent); }
.card h3 { margin-bottom: var(--space-3); }
.card p { font-size: var(--fs-small); color: var(--color-ink-soft); margin-bottom: var(--space-4); }

/* ===== Numbered list (Tratamentos) ===== */
.numbered { margin-top: var(--space-6); }
.numbered__item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: var(--space-4);
  padding-block: var(--space-5);
  border-top: 1px solid var(--color-bg-alt);
}
@media (min-width: 768px) {
  .numbered__item { grid-template-columns: 120px 1fr; gap: var(--space-6); }
}
.numbered__item:last-child { border-bottom: 1px solid var(--color-bg-alt); }
.numbered__num {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 4vw, 4rem);
  color: var(--color-accent);
  line-height: 1;
}
.numbered__body h3 { margin-bottom: var(--space-2); }
.numbered__body p { color: var(--color-ink-soft); }

/* ===== Sobre o doutor ===== */
.about {
  display: grid;
  gap: var(--space-5);
  align-items: center;
}
@media (min-width: 768px) {
  .about { grid-template-columns: 1fr 1.4fr; gap: var(--space-6); }
}
.about__photo img { aspect-ratio: 4/5; object-fit: cover; width: 100%; }
.about__body h2 { margin-bottom: var(--space-4); }
.about__body p { margin-bottom: var(--space-3); }

/* ===== Alert list (sinais) ===== */
.alert-list {
  list-style: none;
  padding: 0;
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-4);
}
.alert-list li {
  padding-left: var(--space-5);
  position: relative;
  font-size: 1.0625rem;
}
.alert-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

/* ===== Unidades ===== */
.units {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-5);
}
@media (min-width: 768px) {
  .units { grid-template-columns: 1fr 1fr; gap: var(--space-5); }
}
.unit {
  background: var(--color-bg-alt);
  padding: var(--space-5);
  border: 1px solid rgba(240, 237, 231, 0.08);
}
.unit h3 { margin-bottom: var(--space-2); font-size: 1.25rem; }
.unit address { font-style: normal; color: var(--color-ink-soft); margin-bottom: var(--space-3); }

/* ===== FAQ ===== */
.faq { max-width: var(--container-sm); }
.faq details {
  border-top: 1px solid var(--color-bg-alt);
  padding-block: var(--space-4);
}
.faq details:last-of-type { border-bottom: 1px solid var(--color-bg-alt); }
.faq summary {
  font-family: var(--font-display);
  font-size: 1.375rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-family: var(--font-display);
  color: var(--color-accent);
  font-size: 1.75rem;
  transition: transform var(--duration) var(--ease);
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin-top: var(--space-3); color: var(--color-ink-soft); }

/* ===== Contact form ===== */
.contact {
  max-width: var(--container-sm);
}
.contact h2 { margin-bottom: var(--space-5); }
.form { display: grid; gap: var(--space-4); }
.field { display: flex; flex-direction: column; gap: var(--space-2); }
.field label {
  font-size: var(--fs-small);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}
.field input,
.field select,
.field textarea {
  background: var(--color-bg-alt);
  color: var(--color-ink);
  border: 1px solid rgba(240, 237, 231, 0.12);
  padding: 0.85rem 1rem;
  font-family: var(--font-body);
  transition: border-color var(--duration) var(--ease);
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}
.field textarea { min-height: 7rem; resize: vertical; }
.field--honey { position: absolute; left: -9999px; }
.form__terms {
  font-size: 0.8125rem;
  color: var(--color-ink-soft);
  margin-top: var(--space-2);
}
.form__status {
  font-size: var(--fs-small);
  padding: var(--space-3);
  border-left: 2px solid var(--color-accent);
  background: var(--color-bg-alt);
}

/* ===== Sticky anchor nav (pages 2 e 3) ===== */
.anchor-nav {
  position: sticky;
  top: 60px;
  z-index: 50;
  background: rgba(12, 12, 12, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-bg-alt);
  padding-block: var(--space-3);
}
.anchor-nav__inner {
  display: flex;
  gap: var(--space-4);
  overflow-x: auto;
  scrollbar-width: none;
}
.anchor-nav__inner::-webkit-scrollbar { display: none; }
.anchor-nav a {
  font-size: var(--fs-small);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  padding-block: var(--space-2);
  border-bottom: 2px solid transparent;
  flex-shrink: 0;
}
.anchor-nav a.is-active,
.anchor-nav a:hover { color: var(--color-ink); border-bottom-color: var(--color-accent); }

/* ===== Long-form article block ===== */
.article { max-width: var(--container-sm); }
.article > * + * { margin-top: var(--space-4); }
.article h2 { font-size: clamp(2rem, 3vw, 2.5rem); }
.article h3 { font-size: 1.375rem; margin-top: var(--space-5); }
.article ul { padding-left: var(--space-4); }
.article ul li { margin-bottom: var(--space-2); }

/* ===== Comparison table ===== */
.compare {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--space-5);
  font-size: var(--fs-small);
}
.compare th, .compare td {
  padding: var(--space-3) var(--space-3);
  text-align: left;
  border-bottom: 1px solid var(--color-bg-alt);
}
.compare th {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1rem;
  background: var(--color-bg-alt);
}
.compare tr td:first-child { color: var(--color-accent); font-weight: 500; }

/* ===== Footer ===== */
.site-footer {
  background: #080808;
  color: var(--color-ink);
  border-top: 1px solid rgba(240, 237, 231, 0.08);
  padding-block: var(--space-6) var(--space-4);
  margin-top: var(--space-6);
}
.site-footer__grid {
  display: grid;
  gap: var(--space-5);
  margin-bottom: var(--space-5);
}
@media (min-width: 768px) {
  .site-footer__grid { grid-template-columns: 1.4fr 1fr 1fr; }
}
.site-footer h4 {
  font-family: var(--font-body);
  color: var(--color-ink-soft);
  font-size: var(--fs-small);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}
.site-footer a { color: var(--color-ink-soft); transition: color var(--duration) var(--ease); }
.site-footer a:hover { color: var(--color-ink); }
.site-footer__bottom {
  padding-top: var(--space-4);
  border-top: 1px solid rgba(240, 237, 231, 0.08);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-3);
  font-size: 0.8125rem;
  color: var(--color-ink-soft);
}

/* ===== WhatsApp FAB ===== */
.whatsapp-fab {
  position: fixed;
  right: var(--space-4);
  bottom: var(--space-4);
  background: #25D366;
  color: white;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  z-index: 90;
  box-shadow: var(--shadow);
  transition: transform var(--duration) var(--ease);
}
.whatsapp-fab:hover { transform: scale(1.06); }
.whatsapp-fab svg { width: 28px; height: 28px; }