.kw-header {
  position: sticky;
  top: 0;
  z-index: 40;
}

.kw-header__inner {
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

.kw-header__brand {
  display: flex;
  align-items: center;
}

.kw-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--color-text);
}

.kw-header__logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 40% 60% 65% 35%;
  background: radial-gradient(circle at 30% 20%, #ffeef5 0, #ff9fb8 55%, #ff7fa0 100%);
  box-shadow: var(--shadow-sm);
}

.kw-header__logo-text {
  letter-spacing: 0.03em;
}

.kw-header__nav {
  margin-left: auto;
}

.kw-header__nav-list {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.kw-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-soft);
  padding: 0.25rem 0;
}

.kw-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-primary), #ffc6d8);
  transition: width var(--transition-normal);
}

.kw-header__nav-link:hover,
.kw-header__nav-link:focus-visible {
  color: var(--color-text);
}

.kw-header__nav-link:hover::after,
.kw-header__nav-link:focus-visible::after {
  width: 100%;
}

.kw-header__nav-item--accent .kw-header__nav-link--accent {
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-pill);
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.kw-header__nav-item--accent .kw-header__nav-link--accent::after {
  display: none;
}

.kw-header__nav-item--accent .kw-header__nav-link--accent:hover,
.kw-header__nav-item--accent .kw-header__nav-link--accent:focus-visible {
  background-color: var(--color-primary);
  color: #fff;
}

.kw-header__actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: var(--space-3);
}

.kw-header__icon-button {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-soft);
  background-color: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
  transition: background-color var(--transition-normal),
    color var(--transition-normal),
    box-shadow var(--transition-normal),
    transform var(--transition-fast);
}

.kw-header__icon-button:hover,
.kw-header__icon-button:focus-visible {
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

/* Mobile toggle */
.kw-header__toggle {
  display: none;
  position: relative;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid var(--gray-200);
  background-color: #fff;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.kw-header__toggle-bar {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--gray-700);
  transition: transform var(--transition-normal),
    opacity var(--transition-fast);
}

.kw-header__toggle-bar + .kw-header__toggle-bar {
  margin-top: 3px;
}

.kw-header__toggle[aria-expanded="true"] .kw-header__toggle-bar:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}

.kw-header__toggle[aria-expanded="true"] .kw-header__toggle-bar:nth-child(2) {
  opacity: 0;
}

.kw-header__toggle[aria-expanded="true"] .kw-header__toggle-bar:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

/* Mobile layout */
@media (max-width: 768px) {
  .kw-header__inner {
    gap: var(--space-2);
  }

  .kw-header__toggle {
    display: inline-flex;
    flex-direction: column;
  }

  .kw-header__nav {
    position: fixed;
    inset: 64px 0 auto 0;
    max-height: 0;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(229, 231, 235, 0.9);
    transition: max-height var(--transition-slow);
  }

  .kw-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4) var(--space-4) var(--space-3);
    gap: 0.75rem;
  }

  .kw-header__nav-link {
    font-size: var(--font-size-base);
  }

  .kw-header__nav--open {
    max-height: 320px;
  }

  .kw-header__actions {
    margin-left: 0;
  }
}

/* Small screens: reduce icon visibility if needed */
@media (max-width: 480px) {
  .kw-header__actions {
    gap: 0.25rem;
  }
}