/* ============================================================
   CHROME DA PÁGINA — barra de leitura, topo, skip-link e
   WhatsApp flutuante (extraído de index.html:33-200)
   ============================================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--scroll-padding-top);
  -webkit-text-size-adjust: 100%;
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

body {
  background: var(--dark-bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
}

::selection {
  background: rgba(var(--accent-rgb), 0.85);
  color: var(--text-selection);
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(
    180deg,
    var(--scrollbar-thumb),
    var(--scrollbar-thumb-dark)
  );
  border-radius: var(--radius-lg);
  border: 2px solid var(--scrollbar-track);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-thumb-hover);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* Barra de progresso de leitura */
.read-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-light));
  box-shadow: 0 0 12px rgba(var(--accent-rgb), 0.8);
  z-index: var(--z-read-progress);
}

/* Navegação fixa no topo */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  height: var(--nav-height);
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  padding-inline: var(--pad-inline);
  background: var(--dark-nav-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(var(--accent-rgb), 0.14);
}

.site-nav__brand {
  font-family: var(--font-archivo);
  font-weight: 900;
  letter-spacing: 0.06em;
  font-size: 0.95rem;
  color: var(--text-light);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
}

.site-nav__brand::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: var(--radius-full);
  background: var(--accent-primary);
  box-shadow: 0 0 10px 2px rgba(var(--accent-rgb), 0.75);
  flex: none;
}

.site-nav__menu {
  flex: 1;
  min-width: 0;
}

.site-nav__menu ul {
  display: flex;
  gap: var(--spacing-2xl);
  justify-content: safe center;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  padding-block: 0.25rem;
}

.site-nav__menu ul::-webkit-scrollbar {
  display: none;
}

.site-nav__menu a {
  font-family: var(--font-sora);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--transition-normal);
}

.site-nav__menu a:hover {
  color: var(--accent-light);
}

.site-nav__menu a[aria-current="page"] {
  color: var(--accent-primary);
}

.site-nav__cta {
  font-family: var(--font-archivo);
  font-weight: 800;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--text-dark);
  text-decoration: none;
  background: var(--accent-primary);
  padding: 0.6em 1.2em;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  flex: none;
  box-shadow: 0 0 18px rgba(var(--accent-rgb), 0.35);
  transition: transform var(--transition-normal),
              box-shadow var(--transition-normal);
}

.site-nav__cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 26px rgba(var(--accent-rgb), 0.55);
}

/* Skip link (acessibilidade) */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: var(--z-skip-link);
  background: var(--accent-primary);
  color: var(--text-dark);
  padding: 0.6em 1em;
  font-family: var(--font-sora);
  font-weight: 600;
  text-decoration: none;
}

.skip-link:focus {
  left: 0;
}

/* WhatsApp flutuante */
.wa-float {
  position: fixed;
  right: 1.2rem;
  bottom: 1.2rem;
  z-index: var(--z-wa-float);
  width: 52px;
  height: 52px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--wa-float-bg);
  border: 1px solid rgba(var(--accent-rgb), 0.26);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 8px 26px -8px var(--wa-float-shadow);
  transition: transform var(--transition-slow),
              box-shadow var(--transition-slow),
              border-color var(--transition-slow);
}

.wa-float:hover {
  transform: translateY(-3px);
  border-color: var(--accent-primary);
  box-shadow: 0 0 26px rgba(var(--accent-rgb), 0.4);
}

.wa-float svg {
  width: 24px;
  height: 24px;
  fill: var(--accent-light);
}

/* Toggle de menu (abaixo de 1080px) */
.site-nav__toggle {
  display: none;
  flex: none;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(var(--accent-rgb), 0.26);
  border-radius: var(--radius-md);
  background: rgba(var(--accent-rgb), 0.06);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.site-nav__toggle span {
  position: relative;
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text-light);
  transition: background var(--transition-fast);
}

.site-nav__toggle span::before,
.site-nav__toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 1.5px;
  background: var(--text-light);
  transition: transform var(--transition-normal);
}

.site-nav__toggle span::before {
  top: -6px;
}

.site-nav__toggle span::after {
  top: 6px;
}

.site-nav.is-open .site-nav__toggle span {
  background: transparent;
}

.site-nav.is-open .site-nav__toggle span::before {
  transform: translateY(6px) rotate(45deg);
}

.site-nav.is-open .site-nav__toggle span::after {
  transform: translateY(-6px) rotate(-45deg);
}

/* Media queries */
@media (max-width: 1500px) {
  .site-nav__menu ul {
    gap: 1rem;
  }
  .site-nav__menu a {
    font-size: 0.66rem;
  }
}

@media (max-width: 1080px) {
  .site-nav__toggle {
    display: flex;
  }
  .site-nav__brand {
    flex: 1;
  }
  .site-nav__menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex: none;
    background: var(--dark-nav-bg-open);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(var(--accent-rgb), 0.14);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow) ease;
  }
  .site-nav.is-open .site-nav__menu {
    max-height: calc(100svh - var(--nav-height));
    overflow-y: auto;
  }
  .site-nav__menu ul {
    flex-direction: column;
    gap: 0;
    justify-content: flex-start;
    overflow-x: visible;
    padding-block: 0.4rem;
  }
  .site-nav__menu li {
    border-bottom: 1px solid rgba(var(--accent-rgb), 0.08);
  }
  .site-nav__menu li:last-child {
    border-bottom: 0;
  }
  .site-nav__menu a {
    display: block;
    padding: 0.95rem var(--pad-inline);
    font-size: 0.74rem;
  }
}

@media (max-width: 640px) {
  .site-nav {
    gap: 0.8rem;
  }
  .site-nav__cta {
    font-size: 0.62rem;
    padding: 0.55em 1em;
  }
}