/* Header styles for Kitcharop */

.kitcharop-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.kitcharop-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-3);
}

.kitcharop-header__brand {
  display: flex;
  align-items: center;
  min-width: 0;
}

.kitcharop-header__logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.kitcharop-header__logo-mark {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at 30% 20%, #c8f3dd 0, #3ba67a 40%, #2f8663 100%);
  box-shadow: var(--shadow-md);
}

.kitcharop-header__logo-text {
  display: flex;
  flex-direction: column;
}

.kitcharop-header__logo-name {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--font-size-lg);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--color-gray-900);
}

.kitcharop-header__logo-tagline {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* Navigation */

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

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

.kitcharop-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-gray-700);
  padding-block: 0.25rem;
}

.kitcharop-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary);
  transition: width var(--transition-base);
}

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

.kitcharop-header__nav-item--highlight .kitcharop-header__nav-link {
  color: var(--color-primary-dark);
}

.kitcharop-header__nav-item--highlight .kitcharop-header__nav-link::after {
  background-color: var(--color-primary-dark);
}

/* Actions */

.kitcharop-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.kitcharop-header__action-link {
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
}

.kitcharop-header__cta {
  font-size: var(--font-size-sm);
  white-space: nowrap;
}

/* Mobile toggle */

.kitcharop-header__toggle {
  display: none;
  align-items: center;
  gap: var(--space-2);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-gray-200);
  background-color: var(--color-surface);
  box-shadow: none;
  color: var(--color-gray-800);
}

.kitcharop-header__toggle:hover {
  background-color: var(--color-gray-50);
  box-shadow: var(--shadow-xs);
}

.kitcharop-header__toggle-box {
  position: relative;
  width: 18px;
  height: 14px;
}

.kitcharop-header__toggle-line {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: var(--radius-full);
  background-color: var(--color-gray-800);
  transition: transform var(--transition-base), opacity var(--transition-base), top var(--transition-base), bottom var(--transition-base);
}

.kitcharop-header__toggle-line:first-child {
  top: 2px;
}

.kitcharop-header__toggle-line:last-child {
  bottom: 2px;
}

.kitcharop-header__toggle-text {
  font-size: var(--font-size-sm);
}

.kitcharop-header__toggle[aria-expanded="true"] .kitcharop-header__toggle-line:first-child {
  top: 6px;
  transform: rotate(45deg);
}

.kitcharop-header__toggle[aria-expanded="true"] .kitcharop-header__toggle-line:last-child {
  bottom: 6px;
  transform: rotate(-45deg);
}

/* Responsive layout */

@media (max-width: 900px) {
  .kitcharop-header__inner {
    padding-block: var(--space-3);
  }

  .kitcharop-header__logo-tagline {
    display: none;
  }

  .kitcharop-header__toggle {
    display: inline-flex;
  }

  .kitcharop-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background-color: var(--color-surface);
    box-shadow: var(--shadow-md);
    border-bottom: 1px solid var(--color-gray-100);
    transform-origin: top;
    transform: scaleY(0.95);
    opacity: 0;
    pointer-events: none;
    visibility: hidden;
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  }

  .kitcharop-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: var(--space-3) var(--space-4) var(--space-4);
  }

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

  .kitcharop-header__nav-link {
    display: block;
    width: 100%;
    padding-block: 0.6rem;
  }

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

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

  .kitcharop-header__actions {
    display: none;
  }
}

@media (min-width: 901px) {
  .kitcharop-header__nav {
    margin-inline: auto;
  }
}

@media (max-width: 520px) {
  .kitcharop-header__logo-name {
    font-size: var(--font-size-base);
  }
}