/* Header styles for Light Fixture Market */

.lfm-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(14px);
  background-color: rgba(247, 245, 242, 0.94);
  border-bottom: 1px solid var(--color-border-subtle);
}

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

.lfm-header__brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.lfm-header__logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-serif-display);
  font-size: var(--font-size-lg);
  letter-spacing: 0.04em;
}

.lfm-header__logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 20%, #ffffff 0, #f5efe6 36%, var(--color-primary) 100%);
  box-shadow: var(--shadow-sm);
}

.lfm-header__logo-text {
  text-transform: uppercase;
  font-size: var(--font-size-sm);
  letter-spacing: 0.16em;
}

/* Nav */

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

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

.lfm-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-neutral-700);
  padding-bottom: 0.15rem;
}

.lfm-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.2rem;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-strong));
  transition: width var(--transition-normal);
}

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

.lfm-header__nav-item--accent .lfm-header__nav-link {
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-subtle);
  background: var(--color-surface);
}

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

.lfm-header__nav-item--accent .lfm-header__nav-link:hover {
  border-color: var(--color-primary-soft);
  box-shadow: var(--shadow-sm);
}

/* Mobile toggle */

.lfm-header__toggle {
  display: none;
  position: relative;
  width: 42px;
  height: 32px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface);
  justify-content: center;
  align-items: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.lfm-header__toggle-bar {
  width: 20px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-neutral-800);
  transition: transform var(--transition-normal), opacity var(--transition-normal), background-color var(--transition-normal);
}

/* Toggle open state */

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

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

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

/* Mobile layout */

@media (max-width: 768px) {
  .lfm-header__inner {
    padding-top: var(--space-2);
    padding-bottom: var(--space-2);
  }

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

  .lfm-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background-color: rgba(247, 245, 242, 0.98);
    border-bottom: 1px solid var(--color-border-subtle);
    transform-origin: top;
    transform: scaleY(1);
    opacity: 1;
    pointer-events: auto;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
  }

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

  .lfm-header__nav-link {
    font-size: var(--font-size-md);
  }

  .lfm-header__nav--collapsed {
    transform: scaleY(0.9);
    opacity: 0;
    pointer-events: none;
  }
}

/* Reduced motion */

@media (prefers-reduced-motion: reduce) {
  .lfm-header__nav,
  .lfm-header__toggle-bar {
    transition: none;
  }
}