/* ==========================================================================
   CWB Runner — Navigation
   Transparente no hero, glass técnico no scroll, indicador ativo refinado.
   ========================================================================== */

.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: var(--z-nav);
  padding-block: 22px;
  transition:
    padding 600ms var(--ease-cinematic),
    background 500ms var(--ease-smooth),
    backdrop-filter 500ms var(--ease-smooth),
    border-color 500ms var(--ease-smooth);
  border-bottom: 1px solid transparent;
}

/* Hairline luminoso quando glass está ativo */
.nav::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(255,255,255,0.18) 30%,
    rgba(255,255,255,0.32) 50%,
    rgba(255,255,255,0.18) 70%,
    transparent 100%
  );
  opacity: 0;
  transition: opacity 500ms var(--ease-smooth);
  pointer-events: none;
}

.nav--scrolled {
  padding-block: 14px;
  background: rgba(8, 8, 8, 0.72);
  backdrop-filter: blur(8px) saturate(130%);
  -webkit-backdrop-filter: blur(8px) saturate(130%);
}

.nav--scrolled::after { opacity: 1; }

/* Contraste adaptativo por seção: variante "light" inverte a paleta */
.nav[data-tone="light"] {
  color: var(--black);
}
.nav[data-tone="light"] .nav__menu {
  border-color: rgba(0,0,0,0.08);
  background: rgba(0,0,0,0.02);
}
.nav[data-tone="light"] .nav__link {
  color: rgba(0,0,0,0.65);
}
.nav[data-tone="light"] .nav__link:hover {
  color: var(--black);
}
.nav[data-tone="light"] .nav__link[aria-current="page"] {
  color: var(--black);
  background: rgba(0,0,0,0.06);
}
.nav[data-tone="light"] .nav__logo-mark { color: var(--black); }
.nav[data-tone="light"].nav--scrolled {
  background: rgba(245,245,245,0.72);
}

.nav__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
}

/* ---------- Logo ---------- */
.nav__logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  position: relative;
}

.nav__logo-mark {
  display: block;
  width: auto;
  height: 40px;
  color: var(--text-primary);
  fill: currentColor;
  transition: height 500ms var(--ease-cinematic), color 500ms var(--ease-smooth), opacity 500ms var(--ease-smooth);
}

.nav__logo-mark path,
.nav__logo-mark polygon { fill: currentColor; }

.nav--scrolled .nav__logo-mark { height: 34px; }

/* ---------- Menu pill ---------- */
.nav__menu {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 4px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, 0.02);
  position: relative;
  transition: border-color 500ms var(--ease-smooth), background 500ms var(--ease-smooth);
}

/* Indicador da página ativa — pill líquido animado por JS */
.nav__menu-indicator {
  position: absolute;
  top: 4px;
  bottom: 4px;
  left: 0;
  width: 0;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-pill);
  z-index: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity 350ms var(--ease-smooth);
  will-change: transform, width;
}

.nav__menu-indicator.is-ready { opacity: 1; }

.nav[data-tone="light"] .nav__menu-indicator {
  background: rgba(0,0,0,0.05);
  border-color: rgba(0,0,0,0.08);
}

.nav__link {
  position: relative;
  z-index: 1;
  padding: 9px 18px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--text-secondary);
  border-radius: var(--r-pill);
  transition: color var(--d-fast) var(--ease-smooth);
}

.nav__link:hover {
  color: var(--accent-magenta);
}

.nav__link[aria-current="page"] {
  color: var(--text-primary);
}

/* O pontinho cyan some — quem indica é o pill líquido */
.nav__link[aria-current="page"]::after { display: none; }

.nav__cta {
  justify-self: end;
  display: inline-flex;
}

/* ---------- Mobile ---------- */
.nav__toggle {
  display: none;
}

@media (max-width: 880px) {
  .nav__inner { grid-template-columns: 1fr auto; }
  .nav__menu { display: none; }
  .nav__cta { display: none; }
  .nav__toggle {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    border: 1px solid var(--line-mid);
    border-radius: var(--r-pill);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0;
    color: var(--text-secondary);
  }
  .nav__toggle-icon {
    display: inline-flex;
    flex-direction: column;
    gap: 4px;
  }
  .nav__toggle-icon::before,
  .nav__toggle-icon::after {
    content: "";
    width: 16px; height: 1px;
    background: currentColor;
  }
}

/* ---------- Mobile drawer ---------- */
.nav__drawer {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-nav) - 1);
  background: rgba(10, 10, 10, 0.97);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 120px var(--gutter) 60px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--d-base) var(--ease-cinematic);
}

.nav__drawer.is-open {
  opacity: 1;
  pointer-events: auto;
}

.nav__drawer-link {
  font-size: clamp(32px, 6vw, 48px);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

/* ---------- Dropdown desktop ---------- */
.nav__dropdown-wrap {
  position: relative;
}

.nav__dropdown-trigger {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
}

.nav__dropdown-arrow {
  transition: transform 250ms var(--ease-smooth);
}

.nav__dropdown-wrap:hover .nav__dropdown-arrow,
.nav__dropdown-wrap:focus-within .nav__dropdown-arrow {
  transform: rotate(180deg);
}

.nav__dropdown-wrap::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  width: 220px;
  height: 14px;
  cursor: pointer;
}

.nav__dropdown {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 200px;
  background: rgba(14, 14, 14, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  padding: 6px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms var(--ease-smooth), transform 200ms var(--ease-smooth);
}

.nav__dropdown-wrap:hover .nav__dropdown,
.nav__dropdown-wrap:focus-within .nav__dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.nav__dropdown-item {
  display: block;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 8px;
  transition: background 150ms var(--ease-smooth), color 150ms var(--ease-smooth);
  white-space: nowrap;
}

.nav__dropdown-item:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
}

/* ---------- Drawer sub-menu mobile ---------- */
.nav__drawer-group {
  border-bottom: 1px solid var(--line-soft);
}

.nav__drawer-group summary {
  list-style: none;
  cursor: pointer;
}

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

.nav__drawer-sub {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 8px 0 16px 16px;
}

.nav__drawer-sublink {
  font-size: clamp(18px, 3.5vw, 26px);
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 0;
}