/* Header styles for Officeeplus */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border-subtle);
  box-shadow: var(--shadow-xs);
}

.site-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);
}

/* Brand / logo */
.site-header__brand {
  display: flex;
  align-items: center;
}

.site-header__logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  font-size: var(--font-size-lg);
  color: var(--color-text);
}

.site-header__logo-mark {
  width: 2.1rem;
  height: 2.1rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-strong));
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-base);
  font-weight: 700;
  box-shadow: var(--shadow-sm);
}

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

/* Navigation */
.site-header__nav {
  display: flex;
  align-items: center;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.site-header__nav-item {
  list-style: none;
}

.site-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.25rem;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  font-weight: 500;
}

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

.site-header__nav-link:hover,
.site-header__nav-link:focus-visible {
  color: var(--color-text);
}

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

.site-header__nav-item--cta .site-header__nav-link {
  padding-inline: 0.9rem;
}

.site-header__nav-link--button {
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-primary);
  background-color: var(--color-primary);
  color: #ffffff;
  padding-block: 0.4rem;
  padding-inline: 0.9rem;
  box-shadow: var(--shadow-sm);
}

.site-header__nav-link--button::after {
  display: none;
}

.site-header__nav-link--button:hover {
  background-color: var(--color-primary-strong);
  border-color: var(--color-primary-strong);
}

.site-header__nav-icon {
  font-size: 0.9em;
}

/* Mobile toggle */
.site-header__toggle {
  display: none;
  position: relative;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.site-header__toggle-bar {
  position: absolute;
  width: 1.4rem;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-text);
  transition: transform var(--transition-base), opacity var(--transition-base), top var(--transition-base), bottom var(--transition-base);
}

.site-header__toggle-bar:nth-child(1) {
  top: 0.85rem;
}

.site-header__toggle-bar:nth-child(2) {
}

.site-header__toggle-bar:nth-child(3) {
  bottom: 0.85rem;
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-bar:nth-child(1) {
  top: 1.2rem;
  transform: rotate(45deg);
}

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

.site-header__toggle[aria-expanded="true"] .site-header__toggle-bar:nth-child(3) {
  top: 1.2rem;
  transform: rotate(-45deg);
}

.site-header__toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Responsive layout */
@media (max-width: 768px) {
  .site-header__inner {
    padding-top: var(--space-2);
    padding-bottom: var(--space-2);
  }

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

  .site-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border-subtle);
    box-shadow: var(--shadow-sm);
    transform-origin: top;
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-3) var(--space-4) var(--space-4);
    gap: var(--space-2);
  }

  .site-header__nav-link {
    width: 100%;
    padding-block: 0.55rem;
  }

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

  .site-header__nav-link--button {
    width: auto;
    justify-content: center;
  }

  /* JS-free default: menu visible; JS will set collapsed class */
  .site-header__nav--collapsed {
    display: none;
  }

  .site-header__nav--open {
    display: block;
  }
}

@media (min-width: 769px) {
  .site-header__nav {
    position: static;
  }
}

/* Utility class for JS to indicate enhanced behavior */
.site-header--js-enabled .site-header__nav {
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
}

@media (max-width: 768px) {
  .site-header--js-enabled .site-header__nav {
    opacity: 0;
    visibility: hidden;
    transform: translateY(-4px);
  }

  .site-header--js-enabled .site-header__nav--open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
}