/* Header styles for Home Air Comfort */

.hac-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: rgba(245, 248, 252, 0.96);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.28);
}

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

/* Branding */
.hac-header__branding {
  display: flex;
  align-items: center;
}

.hac-header__logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--gray-900);
}

.hac-header__logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 12px;
  background: radial-gradient(circle at 30% 20%, #e0f2fe 0, #1d4ed8 45%, #0b1120 100%);
  box-shadow: var(--shadow-md);
}

.hac-header__logo-text {
  letter-spacing: 0.02em;
}

/* Navigation */
.hac-header__nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-4);
}

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

.hac-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--gray-700);
  padding: 0.25rem 0;
}

.hac-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.2rem;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #60a5fa, #1d4ed8);
  transition: width var(--transition-base);
}

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

.hac-header__nav-link:hover {
  color: var(--gray-900);
}

/* Header actions */
.hac-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

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

.hac-header__action-link:hover {
  color: var(--gray-900);
}

.hac-header__cta {
  font-size: var(--font-size-sm);
  padding-inline: 1.1rem;
}

/* Mobile toggle */
.hac-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0.25rem;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--gray-200);
  background-color: #ffffff;
  color: var(--gray-700);
}

.hac-header__toggle-bar {
  width: 1.3rem;
  height: 2px;
  border-radius: 999px;
  background-color: var(--gray-800);
  transition: transform var(--transition-base), opacity var(--transition-base), width var(--transition-base);
}

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

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

  .hac-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background-color: #ffffff;
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.15);
    border-bottom-left-radius: var(--radius-xl);
    border-bottom-right-radius: var(--radius-xl);
    padding: var(--space-4);
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    pointer-events: none;
    transform: translateY(-4px);
    transition:
      max-height var(--transition-slow),
      opacity var(--transition-base),
      transform var(--transition-base);
  }

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

  .hac-header__actions {
    width: 100%;
    justify-content: flex-start;
  }

  .hac-header__actions .hac-header__cta {
    width: auto;
  }

  /* Open state (added via JS) */
  .hac-header--menu-open .hac-header__nav {
    max-height: 520px;
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .hac-header--menu-open .hac-header__toggle-bar:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
    width: 1.4rem;
  }

  .hac-header--menu-open .hac-header__toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .hac-header--menu-open .hac-header__toggle-bar:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
    width: 1.4rem;
  }
}

/* Medium breakpoint adjustments */
@media (min-width: 769px) and (max-width: 1024px) {
  .hac-header__nav-list {
    gap: var(--space-3);
  }

  .hac-header__actions {
    gap: var(--space-2);
  }

  .hac-header__action-link {
    display: none;
  }
}

/* High-contrast focus refinements */
.hac-header__nav-link:focus-visible,
.hac-header__action-link:focus-visible,
.hac-header__logo:focus-visible,
.hac-header__toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-md);
}

.hac-header__toggle:focus-visible {
  border-radius: var(--radius-full);
}