/* Header styles for KidsPlayMarket */

.kpm-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(253, 253, 253, 0.98);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-100);
}

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

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

.kpm-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.kpm-header__logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 40% 60% 55% 45%;
  background: radial-gradient(circle at 20% 20%, var(--color-accent-yellow) 0, transparent 55%),
              radial-gradient(circle at 80% 20%, var(--color-accent-coral) 0, transparent 55%),
              radial-gradient(circle at 50% 80%, var(--color-accent-mint) 0, transparent 55%),
              var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.kpm-header__site-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  letter-spacing: 0.01em;
}

/* Navigation */

.kpm-header__nav {
  display: flex;
  align-items: center;
}

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



.kpm-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--gray-700);
  padding: 0.3rem 0;
}

.kpm-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.2rem;
  width: 0;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent-yellow));
  transition: width var(--transition-normal);
}

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

.kpm-header__nav-item--cta .kpm-header__nav-link--cta {
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent-coral));
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.kpm-header__nav-item--cta .kpm-header__nav-link--cta::after {
  display: none;
}

.kpm-header__nav-item--cta .kpm-header__nav-link--cta:hover,
.kpm-header__nav-item--cta .kpm-header__nav-link--cta:focus-visible {
  box-shadow: var(--shadow-md);
}

/* Mobile toggle */

.kpm-header__toggle {
  display: none;
  position: relative;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 2px solid var(--gray-200);
  background-color: #ffffff;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  box-shadow: var(--shadow-xs);
}

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

.kpm-header__toggle:focus-visible {
  outline: 3px solid var(--color-accent-mint);
  outline-offset: 3px;
}

.kpm-header__toggle[aria-expanded="true"] .kpm-header__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.kpm-header__toggle[aria-expanded="true"] .kpm-header__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Responsive layout */

@media (max-width: 768px) {
  .kpm-header__toggle {
    display: inline-flex;
  }

  .kpm-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background-color: rgba(253, 253, 253, 0.98);
    border-bottom: 1px solid var(--gray-100);
    box-shadow: 0 10px 25px rgba(15, 23, 42, 0.08);
    transform-origin: top;
  }

  .kpm-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: var(--space-3) var(--space-4) var(--space-4);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: scaleY(0.95);
    transition: max-height var(--transition-slow), opacity var(--transition-normal), transform var(--transition-normal);
  }

  .kpm-header__nav-item {
    width: 100%;
  }

  .kpm-header__nav-link,
  .kpm-header__nav-item--cta .kpm-header__nav-link--cta {
    display: block;
    width: 100%;
    padding: 0.7rem 0;
  }

  .kpm-header__nav-item--cta .kpm-header__nav-link--cta {
    text-align: center;
    margin-top: var(--space-1);
  }

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

  .kpm-header--menu-open .kpm-header__nav-list {
    max-height: 360px;
    opacity: 1;
    transform: scaleY(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .kpm-header__nav-list {
    transition: none;
  }
}

/* Utility class for no-JS fallback (menu is visible by default) */
.kpm-header__nav-list {
  max-height: 0;
  opacity: 1;
  transform: none;
  list-style: none;
}