/* ── Skip Link (acessibilidade) ── */
.skip-link {
  position: absolute;
  top: -40px;
  left: 12px;
  z-index: 100;
  padding: 8px 14px;
  background: var(--fg);
  color: var(--bg);
  font: 500 var(--text-label)/1 var(--font-mono);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  transition: top 0.2s ease;
}
.skip-link:focus {
  top: 12px;
}

/* ── Header com Organic Glass Scroll-Aware ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: transparent;
  transition:
    background 0.4s cubic-bezier(0.22, 1, 0.36, 1),
    backdrop-filter 0.4s cubic-bezier(0.22, 1, 0.36, 1),
    border-color 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  border-bottom: 1px dashed transparent;
}

.site-header.is-scrolled {
  background: var(--glass-bg, color-mix(in oklch, var(--bg), transparent 20%));
  backdrop-filter: blur(20px) saturate(120%);
  -webkit-backdrop-filter: blur(20px) saturate(120%);
  border-bottom: 1px dashed var(--glass-border, var(--border));
  box-shadow: 0 1px 20px rgba(212, 86, 40, 0.06), 0 1px 3px rgba(0,0,0,0.3);
}

.nav {
  min-height: 72px;
  display: grid;
  grid-template-columns: minmax(140px, 1fr) auto minmax(140px, 1fr);
  align-items: center;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--fg);
  text-decoration: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font: 500 12px/1 var(--font-mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.nav-links a {
  position: relative;
  transition: color 0.2s ease;
}
.nav-links a:hover, .nav-links a:focus-visible { color: var(--fg); }

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: linear-gradient(90deg, var(--accent), var(--accent-glow));
  border-radius: var(--radius-sm);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}
.nav-links a:hover::after,
.nav-links a:focus-visible::after,
.nav-links a[aria-current="page"]::after {
  transform: scaleX(1);
}

.header-actions {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Menu hamburguer (visível apenas em tablet/mobile) */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 11;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--fg);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* ── Method Layout ── */
.method {
  display: grid;
  grid-template-columns: minmax(280px, .72fr) minmax(0, 1.28fr);
  gap: clamp(30px, 6vw, 76px);
  align-items: start;
  position: relative;
  z-index: 1;
}

/* ── Footer ── */
footer {
  padding: 64px 0 40px;
  color: var(--muted);
  background: var(--bg);
  border-top: 1px dashed var(--border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 0.8fr;
  gap: 40px;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--fg);
  text-transform: none;
  margin-bottom: 12px;
}

.footer-tagline {
  font: 400 14px/1.5 var(--font-body);
  letter-spacing: 0;
  text-transform: none;
  color: var(--muted);
  max-width: 280px;
}

.footer-col h4 {
  font: 600 11px/1 var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg);
  margin: 0 0 16px;
}

.footer-col a {
  display: block;
  font: 400 13px/1.8 var(--font-body);
  letter-spacing: 0;
  text-transform: none;
  color: var(--muted);
  transition: color 0.2s;
}

.footer-col a:hover {
  color: var(--accent);
}

.footer-bottom {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px dashed var(--border);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font: 500 var(--text-label)/1.4 var(--font-mono);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

@media (max-width: 680px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom {
    flex-direction: column;
  }
}