/* =========================================================
   Header: barra flutuante arredondada + menu mobile
   A barra fica solta do topo (--header-top) e alinhada ao container.
   Alturas em tokens.css: --header-top, --bar-h, --header-h.
   ========================================================= */

.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  padding-top: var(--header-top);
  pointer-events: none; /* só a barra recebe clique; o resto deixa a página passar */
}

/* Fundo escurecido atrás do menu mobile aberto */
.header::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background: rgba(10, 10, 11, 0.32);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s var(--ease), visibility 0s 0.25s;
}

.header.is-open::before {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition: opacity 0.25s var(--ease), visibility 0s;
}

/* ---------- Barra ---------- */

.header__bar {
  position: relative;
  display: flex;
  align-items: center;
  height: var(--bar-h);
  padding: 0 8px 0 18px;
  border: 1px solid rgba(10, 10, 11, 0.07);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.9);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  backdrop-filter: saturate(180%) blur(16px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.9),
    0 1px 2px rgba(10, 10, 11, 0.04),
    0 10px 28px -10px rgba(10, 10, 11, 0.1);
  pointer-events: auto;
  transition: box-shadow 0.3s var(--ease), background-color 0.3s;
}

.header.is-scrolled .header__bar,
.header.is-open .header__bar {
  background: rgba(255, 255, 255, 0.97);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.9),
    0 1px 2px rgba(10, 10, 11, 0.05),
    0 18px 44px -14px rgba(10, 10, 11, 0.16);
}

/* ---------- Navegação desktop (logo à esquerda, links logo em seguida) ---------- */

.header__nav {
  display: none;
}

.header__nav a {
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--ink);
  transition: color 0.2s, background-color 0.2s;
}

.header__nav a:hover {
  background: var(--gray-100);
}

.header__nav a.is-active {
  color: var(--brand-800);
  background: var(--brand-50);
}

/* ---------- Ações ---------- */

.header__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.header__actions .btn {
  border-radius: 14px;
}

.header__login,
.header__signup {
  display: none;
}

@media (min-width: 480px) {
  .header__signup {
    display: inline-flex;
  }
}

/* ---------- Botão hambúrguer ---------- */

.header__toggle {
  position: relative;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  border-radius: 14px;
  background: var(--gray-100);
  transition: background-color 0.2s;
}

.header__toggle:hover {
  background: var(--gray-200);
}

.header__toggle span {
  position: absolute;
  left: 13px;
  right: 13px;
  height: 2px;
  border-radius: 2px;
  background: var(--black);
  transition: transform 0.3s var(--ease), top 0.3s var(--ease);
}

.header__toggle span:nth-child(1) {
  top: 17px;
}

.header__toggle span:nth-child(2) {
  top: 25px;
}

.header__toggle[aria-expanded="true"] span:nth-child(1) {
  top: 21px;
  transform: rotate(45deg);
}

.header__toggle[aria-expanded="true"] span:nth-child(2) {
  top: 21px;
  transform: rotate(-45deg);
}

/* ---------- Menu mobile: cartão que abre abaixo da barra ---------- */

.mobile-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: -1px;
  right: -1px;
  display: grid;
  gap: 12px;
  padding: 10px;
  border: 1px solid rgba(10, 10, 11, 0.07);
  border-radius: 20px;
  background: var(--white);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px) scale(0.98);
  transform-origin: top center;
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), visibility 0s 0.25s;
}

.mobile-menu.is-open {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), visibility 0s;
}

.mobile-menu__nav {
  display: grid;
}

.mobile-menu__nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 14px;
  border-radius: 14px;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  transition: background-color 0.2s;
}

.mobile-menu__nav a:hover,
.mobile-menu__nav a:active {
  background: var(--gray-50);
}

.mobile-menu__nav .icon {
  color: var(--gray-400);
}

.mobile-menu__actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  padding-top: 10px;
  border-top: 1px solid var(--gray-100);
}

.mobile-menu__actions .btn {
  height: 48px;
  border-radius: 14px;
}

/* ---------- Desktop ---------- */

@media (min-width: 900px) {
  .header__bar {
    padding: 0 12px 0 24px;
  }

  .header__nav {
    display: flex;
    align-items: center;
    gap: 2px;
    margin-left: 20px;
  }

  .header__login {
    display: inline-flex;
  }

  .header__toggle,
  .mobile-menu,
  .header::before {
    display: none;
  }
}