/* Header-specific styles for SIPP LONDON LTD */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: rgba(245, 245, 242, 0.96);
  backdrop-filter: blur(18px);
}

.site-header__inner {
  height: 72px;
}

.site-header__branding {
  display: flex;
  align-items: center;
  min-width: 0;
}

.site-header__logo-link {
  display: inline-flex;
  flex-direction: column;
  gap: 0.1rem;
}

.site-logo {
  font-size: 1.1rem;
  letter-spacing: 0.18em;
}

.site-logo__tagline {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
}

/* Navigation */

.site-header__nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-16);
}

.site-nav--primary {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  list-style: none;
}

.site-nav__link {
  font-size: var(--font-size-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray-700);
  padding: 0.25rem 0;
  position: relative;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-normal);
}

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

.site-header__cta-wrapper {
  margin-left: var(--space-8);
}

.site-header__cta {
  font-size: var(--font-size-xs);
}

/* Mobile menu toggle */

.site-header__menu-toggle {
  display: none;
  align-items: center;
  gap: 0.55rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(15, 23, 42, 0.08);
  background-color: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  color: var(--color-text);
}

.site-header__menu-toggle:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

.site-header__menu-toggle-box {
  position: relative;
  width: 20px;
  height: 14px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.site-header__menu-toggle-line {
  height: 2px;
  width: 100%;
  border-radius: 999px;
  background-color: var(--color-text);
  transition: transform var(--transition-normal), opacity var(--transition-normal), top var(--transition-normal), bottom var(--transition-normal);
}

.site-header__menu-toggle-text {
  font-size: var(--font-size-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

/* Open state */

.site-header__menu-toggle[aria-expanded="true"] .site-header__menu-toggle-line:first-child {
  transform: translateY(6px) rotate(45deg);
}

.site-header__menu-toggle[aria-expanded="true"] .site-header__menu-toggle-line:last-child {
  transform: translateY(-6px) rotate(-45deg);
}

/* Responsive behaviour */

@media (max-width: 960px) {
  .site-header__menu-toggle {
    display: inline-flex;
  }

  .site-header__nav-wrapper {
    position: fixed;
    inset-inline: 0;
    top: 72px;
    background-color: rgba(245, 245, 242, 0.98);
    border-bottom: 1px solid rgba(15, 23, 42, 0.08);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0 var(--space-12) var(--space-16);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: max-height var(--transition-slow), opacity var(--transition-normal), transform var(--transition-normal);
  }

  .site-header__nav-wrapper.is-open {
    max-height: 340px;
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-nav--primary {
    flex-direction: column;
    align-items: flex-start;
    padding-top: var(--space-12);
    padding-bottom: var(--space-8);
  }

  .site-nav__link {
    padding-block: 0.45rem;
  }

  .site-nav__link::after {
    display: none;
  }

  .site-header__cta-wrapper {
    margin: 0;
    padding-bottom: var(--space-4);
  }

  .site-header__cta {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 640px) {
  .site-header__inner {
    height: 68px;
  }

  .site-logo {
    font-size: 1rem;
  }

  .site-logo__tagline {
    display: none;
  }
}

/* When JS is disabled, keep navigation visible */

.no-js .site-header__nav-wrapper {
  position: static;
  max-height: none !important;
  opacity: 1 !important;
  pointer-events: auto !important;
  transform: none !important;
}

.no-js .site-header__menu-toggle {
  display: none;
}