/**
 * Header , Bourne Builders
 */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition:
    background-color var(--transition-slow),
    box-shadow var(--transition-slow),
    height var(--transition-slow),
    backdrop-filter var(--transition-slow);
}

/* Transparent on hero */
.site-header--transparent {
  background-color: transparent;
}

/* Solid after scroll */
.site-header.is-solid,
.site-header--always-solid {
  background-color: var(--color-white);
  box-shadow: 0 1px 0 var(--color-border), var(--shadow-xs);
  height: var(--header-height-solid);
}

.site-header__inner {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

/* ── Logo ────────────────────────────────────────────────────────────────── */

.site-header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}

.site-header__logo img,
.site-header__logo svg {
  height: 44px;
  width: auto;
  transition: filter var(--transition-base);
}

/* Logo text fallback */
.site-header__logo-text {
  display: flex;
  flex-direction: column;
}

.site-header__logo-name {
  font-family: var(--font-heading);
  font-size: 1.375rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1;
  color: var(--color-ivory);
  transition: color var(--transition-base);
}

.site-header__logo-tagline {
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-gold);
  line-height: 1;
  margin-top: 3px;
}

.site-header.is-solid .site-header__logo-name,
.site-header--always-solid .site-header__logo-name {
  color: var(--color-navy);
}

/* ── Primary Nav ─────────────────────────────────────────────────────────── */

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

.primary-nav {
  display: flex;
  align-items: center;
  gap: 0;
  list-style: none;
}

.primary-nav > li {
  position: relative;
}

.primary-nav > li > a {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  color: rgba(247, 244, 239, 0.88);
  transition: color var(--transition-fast);
  position: relative;
  white-space: nowrap;
}

.primary-nav > li > a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: var(--space-4);
  right: var(--space-4);
  height: 1px;
  background: var(--color-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.primary-nav > li > a:hover,
.primary-nav > li > a[aria-current="page"] {
  color: var(--color-ivory);
}

.primary-nav > li > a:hover::after,
.primary-nav > li > a[aria-current="page"]::after {
  transform: scaleX(1);
}

/* Solid header nav colours */
.site-header.is-solid .primary-nav > li > a,
.site-header--always-solid .primary-nav > li > a {
  color: var(--color-slate);
}

.site-header.is-solid .primary-nav > li > a:hover,
.site-header.is-solid .primary-nav > li > a[aria-current="page"],
.site-header--always-solid .primary-nav > li > a:hover,
.site-header--always-solid .primary-nav > li > a[aria-current="page"] {
  color: var(--color-navy);
}

/* ── CTA in nav ──────────────────────────────────────────────────────────── */

.site-header__cta {
  margin-left: var(--space-4);
  flex-shrink: 0;
}

/* ── Submenu toggle button ───────────────────────────────────────────────── */

.submenu-toggle {
  display: flex;
  align-items: center;
  color: inherit;
  padding: 0 var(--space-1);
  transition: transform var(--transition-fast);
}

.submenu-toggle[aria-expanded="true"] {
  transform: rotate(180deg);
}

/* ── Dropdown submenu ────────────────────────────────────────────────────── */

.primary-nav .sub-menu {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  min-width: 220px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lift);
  border: 1px solid var(--color-border);
  padding: var(--space-2) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition:
    opacity var(--transition-base),
    visibility var(--transition-base),
    transform var(--transition-base);
  z-index: var(--z-dropdown);
}

.primary-nav > li:hover > .sub-menu,
.primary-nav > li > a[aria-expanded="true"] + .sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.sub-menu li a {
  display: block;
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-charcoal);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.sub-menu li a:hover {
  color: var(--color-gold);
  background-color: var(--color-ivory);
}

/* ── Mobile hamburger ────────────────────────────────────────────────────── */

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: pointer;
  border: none;
  background: transparent;
  z-index: calc(var(--z-header) + 10);
}

.hamburger__bar {
  display: block;
  width: 24px;
  height: 2px;
  border-radius: 1px;
  background: var(--color-ivory);
  transition:
    transform var(--transition-base),
    opacity var(--transition-base),
    background-color var(--transition-base);
  transform-origin: center;
}

.site-header.is-solid .hamburger__bar,
.site-header--always-solid .hamburger__bar {
  background: var(--color-navy);
}

.hamburger[aria-expanded="true"] .hamburger__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger[aria-expanded="true"] .hamburger__bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.hamburger[aria-expanded="true"] .hamburger__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Mobile nav panel ────────────────────────────────────────────────────── */

/* Scroll lock when nav is open */
body.nav-open {
  overflow: hidden;
}

/* Overlay: use visibility so opacity transition actually works */
.mobile-nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(13, 27, 42, 0.52);
  backdrop-filter: blur(2px);
  z-index: calc(var(--z-header) - 1);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity var(--transition-base),
    visibility var(--transition-base);
  cursor: pointer;
}

body.nav-open .mobile-nav-overlay {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.mobile-nav-panel {
  position: fixed;
  top: 50%;
  left: 50%;
  width: min(420px, calc(100vw - var(--space-6)));
  max-height: min(720px, calc(100dvh - var(--space-8)));
  background: var(--color-navy);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-modal);
  z-index: calc(var(--z-header) + 5);
  padding: var(--space-4);
  transform: translate(-50%, -46%) scale(0.96);
  transform-origin: center;
  opacity: 0;
  visibility: hidden;
  transition:
    transform var(--transition-base),
    opacity var(--transition-base),
    visibility var(--transition-base);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  display: flex;
  flex-direction: column;
}

body.nav-open .mobile-nav-panel {
  transform: translate(-50%, -50%) scale(1);
  opacity: 1;
  visibility: visible;
}

/* Panel header row: logo text + close button */
.mobile-nav-panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--space-6);
  margin-bottom: var(--space-2);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.mobile-nav-panel__brand {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-ivory);
  letter-spacing: 0.02em;
  line-height: 1;
}

.mobile-nav-panel__brand span {
  display: block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-gold);
  margin-top: 3px;
}

/* Close button inside panel */
.mobile-nav-panel__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  color: var(--color-ivory);
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.mobile-nav-panel__close:hover,
.mobile-nav-panel__close:focus-visible {
  background: rgba(255,255,255,0.14);
  border-color: rgba(255,255,255,0.24);
  outline: none;
}

.mobile-nav-panel__close:focus-visible {
  box-shadow: 0 0 0 3px rgba(184,150,110,0.5);
}

.mobile-nav-panel__menu {
  list-style: none;
  display: flex;
  flex-direction: column !important;
  align-items: stretch;
  gap: 0;
  flex: 1;
  width: 100%;
}

.mobile-nav-panel .primary-nav {
  list-style: none;
  display: flex;
  flex-direction: column !important;
  align-items: stretch;
  gap: 0;
  flex: 1;
  width: 100%;
}

.mobile-nav-panel__menu > li,
.mobile-nav-panel .primary-nav > li {
  display: block;
  width: 100%;
}

.mobile-nav-panel__menu li a,
.mobile-nav-panel .primary-nav li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-ivory);
  border-bottom: 1px solid rgba(255,255,255,0.07);
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast),
    padding-left var(--transition-fast);
  text-decoration: none;
  white-space: normal;
  width: 100%;
}

.mobile-nav-panel__menu li a:hover,
.mobile-nav-panel .primary-nav li a:hover {
  color: var(--color-gold);
  background-color: rgba(255, 255, 255, 0.05);
  padding-left: var(--space-4);
}

.mobile-nav-panel__menu li a::after,
.mobile-nav-panel .primary-nav li a::after {
  content: '→';
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-gold);
  opacity: 0;
  transform: translateX(-6px);
  transition:
    opacity var(--transition-fast),
    transform var(--transition-fast);
  flex-shrink: 0;
}

.mobile-nav-panel__menu li a:hover,
.mobile-nav-panel__menu li a[aria-current="page"],
.mobile-nav-panel .primary-nav li a:hover,
.mobile-nav-panel .primary-nav li a[aria-current="page"] {
  color: var(--color-gold);
}

.mobile-nav-panel__menu li a:hover::after,
.mobile-nav-panel__menu li a[aria-current="page"]::after,
.mobile-nav-panel .primary-nav li a:hover::after,
.mobile-nav-panel .primary-nav li a[aria-current="page"]::after {
  opacity: 1;
  transform: translateX(0);
}

.mobile-nav-panel__footer {
  display: block;
  margin-top: var(--space-5);
  padding-top: var(--space-5);
  border-top: 1px solid rgba(255,255,255,0.1);
}

.mobile-nav-panel__contact {
  font-size: var(--text-sm);
  color: rgba(247, 244, 239, 0.55);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.mobile-nav-panel__contact a {
  color: inherit;
  transition: color var(--transition-fast);
}

.mobile-nav-panel__contact a:hover {
  color: var(--color-gold);
}

/* ── Responsive ──────────────────────────────────────────────────────────── */

@media (max-width: 1024px) {
  .site-header__nav,
  .site-header__cta {
    display: none;
  }

  .hamburger {
    display: flex;
    /* Ensure 44×44px minimum touch target (WCAG 2.5.5) */
    min-width: 44px;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    padding: var(--space-3);
    border-radius: var(--radius-sm);
  }
}

/* Tighten header padding on small screens */
@media (max-width: 480px) {
  .site-header__inner {
    padding-inline: var(--space-4);
  }
}