/* ============================================================
   EGBÉ YPÒ ÒRUN — Navegação v2
   Fundo branco, identidade pela tipografia e cor verde.
   ============================================================ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  background-color: var(--bg-page);
  border-bottom: 1px solid var(--border-light);
  transition: box-shadow var(--transition-base);
}

.site-header.scrolled {
  box-shadow: 0 2px 16px rgba(28, 16, 8, 0.08);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: var(--space-6);
}

/* ----------------------------------------------------------
   Logo
   ---------------------------------------------------------- */
.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}

.nav__logo-img {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

.nav__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.nav__logo-name {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  color: var(--color-brown-dark);
  letter-spacing: var(--tracking-snug);
}

.nav__logo-tagline {
  font-family: var(--font-ui);
  font-size: 0.6875rem;
  font-weight: var(--weight-medium);
  color: var(--text-muted);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

/* ----------------------------------------------------------
   Menu Principal
   ---------------------------------------------------------- */
.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
}

.nav__item {
  position: relative;
}

.nav__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  white-space: nowrap;
}

.nav__link:hover {
  color: var(--color-brown-dark);
  background-color: var(--bg-subtle);
}

.nav__link[aria-current="page"] {
  color: var(--color-brown-dark);
  font-weight: var(--weight-semibold);
  text-decoration: underline;
  text-decoration-color: var(--color-green);
  text-underline-offset: 4px;
  text-decoration-thickness: 2px;
}

/* Seta dropdown — ícone chevron via SVG data-URI */
.nav__link--has-dropdown::after {
  content: '';
  display: inline-block;
  width: 10px;
  height: 6px;
  margin-left: var(--space-1);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%235A3A25' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  transition: transform var(--transition-fast);
  vertical-align: middle;
}

.nav__item--open .nav__link--has-dropdown::after {
  transform: rotate(180deg);
}

/* ----------------------------------------------------------
   Dropdown
   ---------------------------------------------------------- */
.nav__dropdown {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  min-width: 230px;
  background-color: var(--bg-page);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-base);
  list-style: none;
  padding: var(--space-2);
}

.nav__item:hover .nav__dropdown,
.nav__item--open .nav__dropdown,
.nav__item:focus-within .nav__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav__dropdown-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--text-on-light);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), color var(--transition-fast);
  line-height: var(--leading-snug);
}

.nav__dropdown-link span {
  display: block;
  font-size: var(--text-xs);
  font-weight: var(--weight-regular);
  color: var(--text-muted);
  margin-top: 2px;
}

.nav__dropdown-link:hover,
.nav__dropdown-link[aria-current="page"] {
  background-color: var(--bg-subtle);
  color: var(--accent-text);
}

.nav__dropdown-link:hover span {
  color: var(--text-secondary);
}

/* Identidade visual dos projetos no submenu */
.nav__dropdown-link[href*="eko-pelu"] {
  border-left: 3px solid transparent;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding-left: calc(var(--space-4) - 3px);
}
.nav__dropdown-link[href*="eko-pelu"]:hover,
.nav__dropdown-link[href*="eko-pelu"][aria-current="page"] {
  border-left-color: #4F7EA3;
  background-color: rgba(79, 126, 163, 0.06);
  color: #2E5D8A;
}
.nav__dropdown-link[href*="eko-pelu"]:hover span {
  color: #4F7EA3;
}

.nav__dropdown-link[href*="itans"] {
  border-left: 3px solid transparent;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding-left: calc(var(--space-4) - 3px);
}
.nav__dropdown-link[href*="itans"]:hover,
.nav__dropdown-link[href*="itans"][aria-current="page"] {
  border-left-color: #2F6B40;
  background-color: rgba(47, 107, 64, 0.06);
  color: #1F4D2C;
}
.nav__dropdown-link[href*="itans"]:hover span {
  color: #2F6B40;
}

/* ----------------------------------------------------------
   CTA — botão verde
   ---------------------------------------------------------- */
.nav__cta {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-5);
  background-color: var(--color-green);
  color: var(--color-brown-dark) !important;
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  flex-shrink: 0;
  white-space: nowrap;
}

.nav__cta:hover {
  background-color: #9dbb16;
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
  color: var(--color-brown-dark) !important;
}

/* ----------------------------------------------------------
   Botão Mobile
   ---------------------------------------------------------- */
.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--border-mid);
  border-radius: var(--radius-md);
  cursor: pointer;
  padding: var(--space-2);
  transition: border-color var(--transition-fast);
  flex-shrink: 0;
}

.nav__toggle:hover {
  border-color: var(--color-brown-dark);
}

.nav__toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background-color: var(--color-brown-dark);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ----------------------------------------------------------
   Foco — sobrescreve accessibility.css para nav branco
   ---------------------------------------------------------- */
.nav :focus-visible {
  outline-color: var(--accent-text);
}

/* ----------------------------------------------------------
   Mobile
   ---------------------------------------------------------- */
@media (max-width: 1023px) {
  .nav__toggle {
    display: flex;
  }

  .nav__menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-page);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-4) var(--container-px) var(--space-8);
    overflow-y: auto;
    border-top: 1px solid var(--border-light);
    transform: translateX(100%);
    transition: transform var(--transition-slow);
  }

  .nav__menu.is-open {
    transform: translateX(0);
  }

  .nav__item {
    border-bottom: 1px solid var(--border-light);
  }

  .nav__link {
    padding: var(--space-4) var(--space-2);
    font-size: var(--text-base);
    justify-content: space-between;
    color: var(--text-on-light);
    border-radius: 0;
  }

  .nav__link:hover {
    background-color: transparent;
    color: var(--accent-text);
  }

  .nav__dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    border-radius: 0;
    background-color: transparent;
    padding: 0 var(--space-4) var(--space-2);
    display: none;
  }

  .nav__item--open .nav__dropdown {
    display: block;
  }

  .nav__dropdown-link {
    padding: var(--space-3) var(--space-2);
    border-left: 2px solid var(--border-light);
    border-radius: 0;
  }

  .nav__cta {
    margin-top: var(--space-5);
    justify-content: center;
    padding: var(--space-4);
    border-radius: var(--radius-md);
  }
}