/**
 * BONCEPT Experience - Navigation & Mobile Off-Canvas Drawer Stylesheet
 */

/* 1. Header Shell */
.header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: var(--z-header);
  transition: background-color var(--transition-smooth), border-color var(--transition-smooth), box-shadow var(--transition-smooth), color var(--transition-smooth);
}

.header-transparent {
  background-color: transparent;
  color: var(--white);
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.header-scrolled {
  background-color: var(--white);
  color: var(--forest);
  border-bottom: 1px solid var(--stone);
  box-shadow: 0 4px 20px rgba(18, 55, 42, 0.06);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Brand Logo */
.brand-logo {
  display: flex;
  flex-direction: column;
  line-height: 1;
  text-decoration: none;
  color: inherit;
}

.brand-logo .wordmark {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: inherit;
}

.brand-logo .descriptor {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--gold);
  font-weight: 600;
  margin-top: 2px;
}

/* Desktop Navigation Menu */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  position: relative;
  font-weight: 500;
  font-size: 0.95rem;
  padding: 6px 0;
  color: inherit;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--gold);
  transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.auth-action-btn {
  font-size: 0.85rem;
  font-weight: 600;
  color: inherit;
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  padding: 8px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--gold-border);
  background: transparent;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.auth-action-btn:hover {
  background-color: var(--gold-subtle);
  border-color: var(--gold);
}

.gold-slash {
  color: var(--gold);
  font-weight: 400;
}

/* Mobile Hamburger Trigger */
.mobile-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  width: 44px;
  height: 44px;
  position: relative;
  z-index: calc(var(--z-drawer) + 1);
  color: inherit;
}

.hamburger-box {
  width: 24px;
  height: 18px;
  display: inline-block;
  position: relative;
}

.hamburger-inner,
.hamburger-inner::before,
.hamburger-inner::after {
  width: 24px;
  height: 2px;
  background-color: currentColor;
  border-radius: 2px;
  position: absolute;
  transition: transform 0.3s var(--ease-out), background-color 0.3s var(--ease-out);
}

.hamburger-inner {
  top: 50%;
  transform: translateY(-50%);
}

.hamburger-inner::before {
  content: '';
  top: -8px;
}

.hamburger-inner::after {
  content: '';
  bottom: -8px;
}

/* Hamburger Morph into 'X' when Open */
.mobile-hamburger[aria-expanded="true"] .hamburger-inner {
  background-color: transparent !important;
}

.mobile-hamburger[aria-expanded="true"] .hamburger-inner::before {
  transform: translateY(8px) rotate(45deg);
  background-color: var(--ink);
}

.mobile-hamburger[aria-expanded="true"] .hamburger-inner::after {
  transform: translateY(-8px) rotate(-45deg);
  background-color: var(--ink);
}

/* ==========================================================================
   2. LUXURY OFF-CANVAS MOBILE DRAWER & BACKDROP
   ========================================================================== */
.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(16, 35, 27, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: var(--z-drawer-backdrop);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s var(--ease-out), visibility 0.35s var(--ease-out);
}

.drawer-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.offcanvas-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 85%;
  max-width: 400px;
  height: 100vh;
  background: var(--ivory-light);
  color: var(--ink);
  z-index: var(--z-drawer);
  transform: translateX(100%);
  transition: transform 0.4s var(--ease-out);
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.15);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  padding: 32px 28px;
}

.offcanvas-drawer.active {
  transform: translateX(0);
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--stone);
  margin-bottom: 28px;
}

.drawer-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 36px;
}

.drawer-nav-item a {
  font-family: var(--font-heading);
  font-size: 1.45rem;
  color: var(--forest);
  display: block;
  padding: 4px 0;
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.drawer-nav-item a:hover,
.drawer-nav-item a.active {
  color: var(--gold);
  transform: translateX(6px);
}

.drawer-concierge-card {
  margin-top: auto;
  background: var(--white);
  border: 1px solid var(--stone);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-subtle);
}

.drawer-concierge-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--gold);
  font-weight: 700;
  margin-bottom: 8px;
}

.drawer-concierge-desc {
  font-size: 0.85rem;
  color: var(--moss);
  margin-bottom: 16px;
  line-height: 1.4;
}

/* Responsive Breakpoints */
@media (max-width: 900px) {
  .nav-menu {
    display: none;
  }

  .mobile-hamburger {
    display: flex;
    align-items: center;
    justify-content: center;
  }
}