.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: var(--border);
  backdrop-filter: blur(12px);
  transition: box-shadow 240ms ease, background-color 240ms ease;
}

.site-header.is-scrolled { box-shadow: 0 8px 28px rgba(8, 43, 76, 0.1); }

.header-inner {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.brand {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  color: var(--color-gray-900);
  text-decoration: none;
}

.brand__logo {
  display: block;
  width: clamp(15.5rem, 22vw, 20rem);
  height: auto;
  max-height: 4.5rem;
  object-fit: contain;
  object-position: left center;
}

.brand picture { display: block; }

.nav-toggle {
  display: none;
  min-width: 3rem;
  min-height: 3rem;
  padding: var(--space-2) var(--space-3);
  color: var(--color-gray-900);
  background: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.nav-toggle__icon {
  width: 1.35rem;
  height: 0.9rem;
  display: inline-block;
  background:
    linear-gradient(var(--color-gray-900), var(--color-gray-900)) 0 0 / 100% 2px no-repeat,
    linear-gradient(var(--color-gray-900), var(--color-gray-900)) 0 50% / 100% 2px no-repeat,
    linear-gradient(var(--color-gray-900), var(--color-gray-900)) 0 100% / 100% 2px no-repeat;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(0.9rem, 1.6vw, 1.6rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav a {
  position: relative;
  color: var(--color-navy);
  font-family: var(--font-heading);
  font-size: 0.73rem;
  font-weight: 750;
  letter-spacing: 0.055em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--color-blue-800);
}

.site-nav a[aria-current="page"] {
  text-decoration: none;
}

.site-nav a::after {
  position: absolute;
  inset: auto 0 -0.65rem;
  height: 2px;
  background: var(--color-orange-500);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 200ms ease;
}

.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.button {
  min-height: 3rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.25rem;
  border: 2px solid transparent;
  border-radius: 999px;
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  letter-spacing: 0.035em;
  text-transform: uppercase;
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.button--primary {
  color: var(--color-navy-deep);
  background: var(--color-orange-500);
}

.button--primary:hover {
  color: var(--color-navy-deep);
  background: #ffc22e;
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(244, 176, 0, 0.24);
}

.button--secondary {
  color: var(--color-navy);
  background: var(--color-white);
  border-color: var(--color-navy);
}

.button--secondary:hover {
  color: var(--color-white);
  background: var(--color-navy);
  transform: translateY(-1px);
}

.button[disabled] {
  color: var(--color-gray-600);
  background: var(--color-gray-200);
  border-color: var(--color-gray-300);
  cursor: not-allowed;
}

.button[aria-disabled="true"],
.button.is-disabled {
  color: var(--color-gray-600);
  background: var(--color-gray-200);
  border-color: var(--color-gray-300);
  cursor: not-allowed;
  pointer-events: none;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.grid {
  display: grid;
  gap: var(--space-6);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card {
  padding: var(--space-6);
  background: var(--color-white);
  border: var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  transition: border-color 220ms ease, background-color 220ms ease, transform 220ms ease, box-shadow 220ms ease;
}

.card:hover,
.card:focus-within { border-color: var(--color-blue-700); transform: translateY(-4px); box-shadow: var(--shadow-soft); }

.card__link {
  display: inline-flex;
  margin-top: var(--space-2);
  font-weight: 700;
}

.section--technical .card { color: var(--color-gray-900); }
.section--technical .card h2,
.section--technical .card h3,
.section--technical .card h4,
.section--technical .card a { color: var(--color-gray-900); }

.text-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 750;
}

.text-link::after,
.card__link::after,
.solution-card a::after {
  content: "→";
}

.breadcrumb {
  padding-block: var(--space-4);
  font-size: var(--step--1);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumb li + li::before {
  margin-right: var(--space-2);
  color: var(--color-gray-600);
  content: "/";
}

.site-footer {
  padding-block: var(--space-12) var(--space-6);
  color: var(--color-white);
  background: var(--color-navy-deep);
}

.site-footer::before {
  width: min(calc(100% - 2rem), 18rem);
  height: 5.4rem;
  display: block;
  margin: 0 auto var(--space-8);
  background: var(--color-white) url("../images/brands/grupo-whs-recupera-c-d-cazuza.webp") center / contain no-repeat;
  border-radius: var(--radius-sm);
  content: "";
}

.site-footer:has(.footer-brand)::before { display: none; }

.footer-brand { width: min(100%, 18rem); margin-bottom: var(--space-5); }
.footer-brand img { width: 100%; height: auto; object-fit: contain; filter: drop-shadow(0 2px 1px rgba(255,255,255,.12)); }
.footer-company-list { margin: var(--space-4) 0 0; padding: 0; list-style: none; color: var(--color-gray-300); font-size: var(--step--1); }
.footer-company-list li + li { margin-top: var(--space-1); }

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: var(--space-8);
}

.site-footer h2,
.site-footer h3,
.site-footer a {
  color: var(--color-white);
}

.footer-links {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-links li + li { margin-top: var(--space-2); }

.footer-meta {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  color: var(--color-gray-300);
  border-top: 1px solid var(--color-gray-700);
  font-size: var(--step--1);
}

.field {
  display: grid;
  gap: var(--space-2);
}

.field label { font-weight: 700; }

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 3rem;
  padding: 0.75rem;
  color: var(--color-gray-900);
  background: var(--color-white);
  border: 1px solid var(--color-gray-600);
  border-radius: var(--radius-sm);
}

.field textarea { min-height: 8rem; resize: vertical; }

.field__hint,
.form-status {
  margin: 0;
  color: var(--color-gray-600);
  font-size: var(--step--1);
}

.form-status[data-state="error"] { color: var(--color-error); font-weight: 700; }
.form-status[data-state="success"] { color: var(--color-success); font-weight: 700; }

fieldset {
  margin: 0;
  padding: 0;
  border: 0;
}

fieldset[disabled] { opacity: 0.7; }

.form-grid {
  display: grid;
  gap: var(--space-4);
}

.notice {
  padding: var(--space-5) var(--space-6);
  background: var(--color-gray-100);
  border-left: 4px solid var(--color-orange-500);
  border-radius: var(--radius-sm);
}

.notice p:last-child { margin-bottom: 0; }

.details-list {
  display: grid;
  gap: var(--space-4);
}

.details-list details {
  background: var(--color-white);
  border: var(--border);
  border-radius: var(--radius-md);
  transition: border-color 160ms ease;
}

.details-list details:hover,
.details-list details:focus-within { border-color: var(--color-blue-700); }

.details-list summary {
  position: relative;
  padding: var(--space-5) 3.5rem var(--space-5) var(--space-6);
  font-family: var(--font-heading);
  font-weight: 750;
  cursor: pointer;
  list-style: none;
}

.details-list summary::-webkit-details-marker { display: none; }

.details-list summary::after {
  position: absolute;
  top: 50%;
  right: var(--space-5);
  color: var(--color-blue-800);
  font-size: 1.5rem;
  content: "+";
  transform: translateY(-50%);
}

.details-list details[open] summary::after { content: "−"; }

.details-list__content {
  padding: 0 var(--space-6) var(--space-6);
  border-top: var(--border);
}

.details-list__content h4 { margin-top: var(--space-5); }

.faq-list {
  border-top: var(--border);
}

.faq-list details {
  border-bottom: var(--border);
}

.faq-list summary {
  position: relative;
  padding: var(--space-6) 3rem var(--space-6) 0;
  font-family: var(--font-heading);
  font-size: var(--step-1);
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}

.faq-list summary::-webkit-details-marker { display: none; }

.faq-list summary::after {
  position: absolute;
  top: 50%;
  right: var(--space-2);
  width: 1.75rem;
  height: 1.75rem;
  display: grid;
  place-items: center;
  color: var(--color-blue-800);
  border: 1px solid var(--color-blue-800);
  border-radius: 50%;
  content: "+";
  transform: translateY(-50%);
}

.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { max-width: 48rem; padding-right: var(--space-8); }

.floating-whatsapp {
  position: fixed;
  right: max(var(--space-6), env(safe-area-inset-right));
  bottom: max(var(--space-6), env(safe-area-inset-bottom));
  z-index: 15;
  width: 3.5rem;
  height: 3.5rem;
  display: grid;
  place-items: center;
  color: var(--color-white);
  background: var(--color-success);
  border: 3px solid var(--color-white);
  border-radius: 50%;
  box-shadow: 0 4px 16px rgba(37, 38, 42, 0.18);
  font-family: var(--font-heading);
  font-size: var(--step--1);
  font-weight: 800;
  text-decoration: none;
  transition: opacity 160ms ease, visibility 160ms ease, transform 160ms ease;
}

.floating-whatsapp.is-suppressed {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  transform: translateY(0.5rem);
}

.floating-whatsapp:hover {
  color: var(--color-white);
  background: #176538;
}