/* Header styles for KidsWorldHubPL */

.kwh-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: linear-gradient(90deg, rgba(255, 200, 87, 0.12), rgba(77, 171, 247, 0.12));
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 200, 87, 0.4);
}

.kwh-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

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

.kwh-header__logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text);
}

.kwh-header__logo-mark {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 40% 60% 55% 45%;
  background: radial-gradient(circle at 30% 30%, #ffffff 0, #ffffff 35%, #ffc857 36%, #ff9ac4 70%, #4dabf7 100%);
  box-shadow: var(--shadow-md);
}

.kwh-header__logo-text {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.03em;
}

/* Navigation */
.kwh-header__nav {
  margin-left: auto;
}

.kwh-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.kwh-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
}

.kwh-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.2rem;
  height: 3px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-accent-blue), var(--color-accent-pink));
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-normal);
}

.kwh-header__nav-link:hover::after,
.kwh-header__nav-link:focus-visible::after {
  transform: scaleX(1);
}

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

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

.kwh-header__nav-item--accent .kwh-header__nav-link:hover {
  background: var(--color-accent-orange);
}

/* Mobile toggle */
.kwh-header__toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-pill);
  border: 2px solid rgba(255, 200, 87, 0.8);
  background-color: #ffffff;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0;
}

.kwh-header__toggle-bar {
  width: 1.3rem;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-text);
  transition: transform var(--transition-normal), opacity var(--transition-fast);
}

.kwh-header__toggle.is-active .kwh-header__toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.kwh-header__toggle.is-active .kwh-header__toggle-bar:nth-child(2) {
  opacity: 0;
}

.kwh-header__toggle.is-active .kwh-header__toggle-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile layout */
@media (max-width: 768px) {
  .kwh-header__inner {
    padding-top: var(--space-2);
    padding-bottom: var(--space-2);
  }

  .kwh-header__toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .kwh-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background-color: var(--color-surface);
    box-shadow: var(--shadow-md);
    border-bottom-left-radius: var(--radius-lg);
    border-bottom-right-radius: var(--radius-lg);
    transform-origin: top;
    transform: scaleY(0.95);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal), transform var(--transition-normal);
  }

  .kwh-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-3) var(--space-4) var(--space-4);
    gap: var(--space-2);
  }

  .kwh-header__nav-item--accent .kwh-header__nav-link {
    width: 100%;
    justify-content: center;
  }

  .kwh-header__nav-link {
    width: 100%;
  }

  .kwh-header__nav-link::after {
    display: none;
  }

  .kwh-header__nav--open {
    opacity: 1;
    transform: scaleY(1);
    pointer-events: auto;
  }
}

/* High-contrast focus for links inside header */
.kwh-header a:focus-visible,
.kwh-header button:focus-visible {
  outline: 3px solid var(--color-accent-blue);
  outline-offset: 3px;
}