/* ============================================================
   HEADER & NAVIGATION
   Site header, glassmorphic nav, dropdowns, mobile nav toggle
   ============================================================ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(26, 26, 46, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: background 0.3s ease;
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.logo-img {
  height: 40px;
  width: auto;
  /* White version for dark header background */
  filter: brightness(0) invert(1);
}

.logo-divider {
  width: 1px;
  height: 28px;
  background: rgba(255,255,255,0.2);
}

.logo-subtitle {
  font-family: var(--font-primary);
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* Main Nav */
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  position: relative; /* Positioning context for the sliding pill */
}

/* ============================================================
   SLIDING PILL — Stripe-style hover highlight (desktop only)
   A single absolutely-positioned element that slides between
   nav items on hover, with spring easing for organic feel.
   Created by JS — see navigation.js initNavPill().
   ============================================================ */
.nav-pill {
  position: absolute;
  top: 50%;
  left: 0;
  height: calc(100% - 16px); /* Matches nav-link padding (8px top + 8px bottom) minus breathing room */
  transform: translateY(-50%);
  background: rgba(255,255,255,0.12);
  border-radius: var(--radius-xs);
  opacity: 0;
  pointer-events: none; /* Click-through — don't interfere with links */
  z-index: 0;
  transition:
    left 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
    width 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
    opacity 0.2s ease;
  will-change: left, width, opacity;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  font-size: 0.835rem;
  font-weight: 400;
  color: rgba(255,255,255,0.7);
  border-radius: var(--radius-xs);
  transition: color 0.2s ease;
  cursor: pointer;
  white-space: nowrap;
  position: relative; /* Above the sliding pill */
  z-index: 1;
}

.nav-link:hover {
  color: var(--white);
  /* Background handled by sliding pill on desktop — see .nav-pill */
}

.nav-link .chevron {
  width: 10px;
  height: 10px;
  opacity: 0.5;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-item:hover .chevron {
  transform: rotate(180deg);
  opacity: 0.8;
}

/* Dropdowns — with subtle scale for premium feel */
.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px) scale(0.98);
  transform-origin: top center;
  min-width: 240px;
  background: rgba(30, 30, 54, 0.95);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1),
    visibility 0.25s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0) scale(1);
}

.dropdown-link {
  display: block;
  padding: 10px 14px;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.65);
  border-radius: var(--radius-xs);
  transition: all 0.15s ease;
}

.dropdown-link:hover {
  color: var(--white);
  background: rgba(255,255,255,0.08);
}

.dropdown-nested {
  padding-left: 28px;
  font-size: 0.78rem;
  color: rgba(255,255,255,0.45);
}

.dropdown-nested:hover {
  color: rgba(255,255,255,0.85);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  margin: 5px 0;
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ============================================================
   KEYBOARD FOCUS & ACCESSIBILITY
   ============================================================ */

/* Nav links — visible focus ring on keyboard navigation */
.nav-link:focus-visible {
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
  outline: 2px solid var(--cooper-red);
  outline-offset: 2px;
}

/* Dropdown links — matching focus style */
.dropdown-link:focus-visible {
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
  outline: 2px solid var(--cooper-red);
  outline-offset: -2px;
}

/* Nav toggle button — focus ring for mobile hamburger */
.nav-toggle:focus-visible {
  outline: 2px solid var(--cooper-red);
  outline-offset: 4px;
  border-radius: 4px;
}

/* Skip-to-content link — show on focus, positioned above everything */
.skip-link:focus {
  background: var(--cooper-red);
  color: var(--white);
  clip: auto !important;
  clip-path: none;
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  height: auto;
  left: 8px;
  padding: 12px 24px;
  position: fixed;
  top: 8px;
  width: auto;
  z-index: 100001; /* Above the fixed header */
  border-radius: var(--radius-xs);
  box-shadow: var(--shadow-lg);
  text-decoration: none;
}

/* ============================================================
   RESPONSIVE — Header / Navigation
   ============================================================ */
@media (max-width: 900px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(26, 26, 46, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 12px 20px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    max-height: calc(100vh - 72px);
    overflow-y: auto;
    gap: 0;
  }
  .main-nav.open {
    display: flex;
  }
  .nav-toggle {
    display: block;
  }
  .nav-item {
    border-bottom: 1px solid rgba(255,255,255,0.06);
  }
  .nav-item:last-child {
    border-bottom: none;
  }
  .nav-link {
    padding: 14px 0;
    font-size: 0.95rem;
  }
  /* Mobile dropdowns: inline, not absolute */
  .nav-dropdown {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    min-width: 0;
    background: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border: none;
    border-radius: 0;
    box-shadow: none;
    padding: 0 0 8px 16px;
    display: none;
  }
  .nav-item.has-dropdown.dropdown-open .nav-dropdown {
    display: block;
  }
  /* Disable hover-to-show on mobile */
  .nav-item:hover .nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: none;
    display: none;
  }
  .nav-item.has-dropdown.dropdown-open:hover .nav-dropdown {
    display: block;
  }
  .dropdown-link {
    padding: 10px 0;
    font-size: 0.88rem;
    color: rgba(255,255,255,0.55);
    border-radius: 0;
  }
  .dropdown-link:hover {
    background: none;
    color: rgba(255,255,255,0.9);
    padding-left: 0;
  }
  .header-inner {
    padding: 0 20px;
  }
  /* Hide the sliding pill on mobile — it's a desktop-only effect */
  .nav-pill {
    display: none !important;
  }
}

/* ============================================================
   WORDPRESS ADMIN BAR OFFSET
   When logged in, WP adds .admin-bar to <body> and a 32px bar.
   Push our fixed header down so it doesn't hide behind it.
   ============================================================ */
.admin-bar .site-header {
  top: 32px;
}

@media (max-width: 782px) {
  .admin-bar .site-header {
    top: 46px;
  }
}