header {
  width: 100%;
  padding: 22px 8%;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  background-color: rgba(13, 11, 26, 0.7);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
  transition: background-color .3s ease;
}

#navbar {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

#nav_logo {
  height: 56px;
  width: auto;
}

#nav_list {
  display: flex;
  list-style: none;
  gap: 44px;
}

.nav-item a {
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding-bottom: 4px;
  transition: color .25s ease;
}

.nav-item a:hover {
  color: var(--color-gold);
}

.nav-item.active a {
  color: var(--color-gold);
  border-bottom: 2px solid var(--color-gold);
}

#mobile_btn {
  display: none;
}

#mobile_menu {
  display: none;
}

/* Overlay sempre no DOM, invisível por padrão */
#mobile_overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 98;
  -webkit-tap-highlight-color: transparent;
   pointer-events: none;
}

#mobile_overlay.active {
  display: block;
  pointer-events: all;
}

@media screen and (max-width: 1024px) {
  #nav_list,
  #navbar .btn-default {
    display: none;
  }

  #mobile_btn {
    display: flex;
    border: none;
    background-color: transparent;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-gold);
  }

  #mobile_menu {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    width: min(78vw, 320px);
    background-color: var(--color-surface);
    border-left: 1px solid var(--color-border);
    transform: translateX(100%);
    transition: transform .35s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    z-index: 99;
  }

  #mobile_menu.active {
    transform: translateX(0);
  }

  #mobile_nav_list {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 26px;
    list-style: none;
  }

  #mobile_nav_list .nav-item a {
    font-size: 1.1rem;
  }
}