.header {
  background-color: var(--ground);
  border-bottom: var(--paper-weight) solid var(--ink-faint);
  position: sticky;
  top: 0;
  z-index: var(--z-dropdown);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

.logo a {
  color: var(--paper);
  text-decoration: none;
  display: flex;
  align-items: baseline;
  gap: 2px;
}

.logo-text {
  font-family: var(--font-display);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--paper);
  text-transform: uppercase;
}

.logo-x {
  font-family: var(--font-display);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--crimson);
  position: relative;
}

.logo-x::after {
  content: "";
  position: absolute;
  inset: -2px -4px;
  border: 1px solid var(--crimson);
  opacity: 0.5;
  transform: rotate(2deg);
  pointer-events: none;
}

.menu {
  display: flex;
  gap: 32px;
}

.menu a {
  color: var(--ink-faint);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: var(--transition);
  position: relative;
  padding: 4px 0;
}

.menu a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--crimson);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.menu a:hover,
.menu a:focus-visible {
  color: var(--paper);
}

.menu a:hover::after,
.menu a:focus-visible::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.search-bar {
  display: flex;
  align-items: center;
  background-color: var(--paper-dim);
  border: var(--paper-weight) solid var(--ink-faint);
  border-radius: var(--radius-fold);
  padding: 6px 10px;
  gap: 6px;
  width: 220px;
  transition: var(--transition);
}

.search-bar:focus-within {
  background-color: var(--paper);
  border-color: var(--ink-muted);
  box-shadow: var(--paper-shadow);
}

.search-bar .search-icon {
  color: var(--ink-muted);
  font-size: 18px;
}

.search-bar input {
  background: transparent;
  border: none;
  color: var(--ink);
  outline: none;
  flex: 1;
  font-size: var(--font-size-sm);
  font-family: var(--font-body);
  width: 100%;
}

.search-bar input::placeholder {
  color: var(--ink-faint);
}

.icon-btn {
  background: transparent;
  border: none;
  color: var(--ink-faint);
  cursor: pointer;
  position: relative;
  transition: var(--transition-fast);
  padding: 8px;
  border-radius: var(--radius-fold);
}

.icon-btn:hover,
.icon-btn:focus-visible {
  color: var(--paper);
  outline: none;
}

.icon-btn:focus-visible {
  box-shadow: 0 0 0 2px var(--crimson-glow);
}

.cart-badge {
  position: absolute;
  top: -4px;
  right: -8px;
  background-color: var(--ink);
  color: var(--paper);
  font-size: 10px;
  font-weight: 700;
  height: 16px;
  width: 16px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  letter-spacing: 0;
  box-shadow: var(--paper-shadow);
}

.cart-badge.bounce {
  animation: badge-stamp 0.25s cubic-bezier(0.33, 1, 0.68, 1);
}

@keyframes badge-stamp {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.4); }
}

.hamburger {
  display: none;
  cursor: pointer;
  color: var(--ink-faint);
  background: none;
  border: none;
  padding: 8px;
  border-radius: var(--radius-fold);
  transition: var(--transition-fast);
}

.hamburger:hover,
.hamburger:focus-visible {
  color: var(--paper);
  outline: none;
}

.hamburger:focus-visible {
  box-shadow: 0 0 0 2px var(--crimson-glow);
}

.btn-busca-mobile {
  display: none;
}

@media (pointer: coarse) {
  .icon-btn {
    padding: 12px;
  }
  .menu a {
    padding: 18px 20px;
  }
}

@media (max-width: 1024px) {
  .header-content {
    height: 64px;
  }
  .menu {
    gap: 24px;
  }
  .search-bar {
    width: 160px;
  }
}

@media (max-width: 600px) {
  .header-content {
    height: 56px;
    gap: 8px;
    padding: 0 12px;
  }
  .logo-text,
  .logo-x {
    font-size: 20px;
  }
  .hamburger {
    display: flex;
    justify-content: center;
    align-items: center;
    order: -1;
    padding: 6px;
  }
  .header-actions {
    gap: 4px;
  }
  .btn-busca-mobile {
    display: flex;
  }
  .search-bar {
    position: absolute;
    top: 56px;
    left: 0;
    width: 100%;
    padding: 10px 12px;
    border-radius: 0;
    border-top: var(--paper-weight) solid var(--ink-faint);
    border-bottom: var(--paper-weight) solid var(--ink-faint);
    background-color: var(--ground);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
  }
  .search-bar.expandida {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .search-bar input {
    font-size: 16px;
  }
  .menu {
    position: absolute;
    top: 56px;
    left: 0;
    width: 100%;
    background-color: var(--ground);
    flex-direction: column;
    gap: 0;
    border-bottom: var(--paper-weight) solid var(--ink-faint);
    clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
    opacity: 0;
    transition: all 0.4s ease;
  }
  .menu a {
    padding: 16px 20px;
    text-align: center;
    border-bottom: var(--paper-weight) solid rgba(255, 255, 255, 0.04);
    font-size: 15px;
  }
  .menu a:last-child {
    border-bottom: none;
  }
  .menu.active {
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    opacity: 1;
  }
  .cart-badge {
    top: -3px;
    right: -6px;
    height: 14px;
    width: 14px;
    font-size: 9px;
  }
}