/* Header styles for GardenToolPL */

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

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

/* Brand */
.gt-header__brand {
  flex-shrink: 0;
}

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

.gt-header__logo-mark {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #ffffff;
  box-shadow: var(--shadow-sm);
  font-size: 1.1rem;
}

.gt-header__logo-text {
  font-family: var(--font-serif);
  font-size: var(--font-size-xl);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--gray-900);
}

/* Navigation */
.gt-header__nav {
  flex: 1 1 auto;
}

.gt-header__nav-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  list-style: none;
}

.gt-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--gray-700);
  padding: 0.25rem 0;
}

.gt-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
}

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

/* Actions */
.gt-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.gt-header__cta {
  white-space: nowrap;
}

.gt-header__cta--primary {
  display: inline-flex;
}

/* Mobile toggle */
.gt-header__toggle {
  display: none;
  align-items: center;
  gap: var(--space-2);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--gray-200);
  background-color: var(--color-surface);
  color: var(--gray-800);
  cursor: pointer;
  font-size: var(--font-size-sm);
}

.gt-header__toggle-icon {
  position: relative;
  width: 18px;
  height: 2px;
  background-color: var(--gray-800);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), background-color var(--transition-base);
}

.gt-header__toggle-icon::before,
.gt-header__toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background-color: var(--gray-800);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.gt-header__toggle-icon::before {
  top: -6px;
}

.gt-header__toggle-icon::after {
  top: 6px;
}

/* Active state */
.gt-header__toggle[aria-expanded="true"] .gt-header__toggle-icon {
  background-color: transparent;
}

.gt-header__toggle[aria-expanded="true"] .gt-header__toggle-icon::before {
  transform: translateY(6px) rotate(45deg);
}

.gt-header__toggle[aria-expanded="true"] .gt-header__toggle-icon::after {
  transform: translateY(-6px) rotate(-45deg);
}

/* Responsive */
@media (max-width: 960px) {
  .gt-header__inner {
    gap: var(--space-2);
  }

  .gt-header__nav-list {
    gap: var(--space-3);
  }

  .gt-header__actions {
    display: none;
  }
}

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

  .gt-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background-color: var(--color-surface);
    box-shadow: var(--shadow-md);
    transform-origin: top;
    transform: scaleY(0.9);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  }

  .gt-header__nav-list {
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-3) var(--space-4) var(--space-4);
  }

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

  .gt-header__nav-link {
    display: block;
    padding: 0.5rem 0;
  }

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

  .gt-header__actions {
    display: none;
  }
}

@media (max-width: 480px) {
  .gt-header__logo-text {
    font-size: var(--font-size-lg);
  }

  .gt-header__logo-mark {
    width: 32px;
    height: 32px;
    font-size: 1rem;
  }
}