/* ── NAVIGATION ─────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 2rem);
  max-width: 1200px;
  z-index: 1000;
  padding: 0.8rem 0;
  transition: top 0.35s cubic-bezier(0.4,0,0.2,1), background 0.35s cubic-bezier(0.4,0,0.2,1),
    border-color 0.35s cubic-bezier(0.4,0,0.2,1), box-shadow 0.35s cubic-bezier(0.4,0,0.2,1),
    padding 0.35s cubic-bezier(0.4,0,0.2,1);
  border-radius: 100px;
  background: rgba(16, 16, 24, 0.2);
  /* Fixed blur radius (never transitioned): animating backdrop-filter
     forces the browser to recompute the blur every frame, which is
     the single biggest scroll-jank source on a fixed, always-visible
     navbar. Only cheap properties (color/box-shadow/position) animate. */
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.08);
}
#navbar.scrolled {
  top: 1rem;
  background: rgba(16, 16, 24, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
  padding: 0.6rem 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}
.nav-logo img {
  height: 48px;
  width: auto;
  transition: var(--transition);
}
.nav-logo:hover img { opacity: 0.85; }

.nav-logo-text {
  font-family: var(--font-title);
  font-size: 1.4rem;
  color: var(--clr-white);
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}
.nav-links a {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  letter-spacing: 0.05em;
  transition: var(--transition-fast);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: var(--clr-red);
  transform: scaleX(0);
  transition: transform 0.25s ease;
}
.nav-links a:hover { color: var(--clr-white); }
.nav-links a:hover::after { transform: scaleX(1); }

.nav-cta { margin-left: 1rem; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: transparent;
  border: none;
}
.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--clr-white);
  border-radius: 2px;
  transition: var(--transition-fast);
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── NAV DROPDOWNS (Desktop) ─────────────────────────────── */
.nav-dropdown {
  position: relative;
}

.nav-drop-trigger {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  letter-spacing: 0.05em;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  font-family: var(--font-body);
  transition: var(--transition-fast);
  position: relative;
}
.nav-drop-trigger::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: var(--clr-red);
  transform: scaleX(0);
  transition: transform 0.25s ease;
}
.nav-drop-trigger:hover,
.nav-dropdown:hover .nav-drop-trigger { color: var(--clr-white); }
.nav-dropdown:hover .nav-drop-trigger::after { transform: scaleX(1); }

.nav-chevron {
  transition: transform 0.3s ease;
  flex-shrink: 0;
  color: var(--clr-text-muted);
}
.nav-dropdown:hover .nav-chevron { transform: rotate(180deg); }

/* The dropdown panel */
.nav-drop-panel {
  position: absolute;
  top: calc(100% + 0.8rem); /* Slightly tighter gap */
  left: 50%;
  transform: translateX(-50%) translateY(12px); 
  width: 295px;
  background: rgba(16, 16, 28, 0.96);
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  padding: 0.7rem;
  box-shadow: 0 30px 80px rgba(0,0,0,0.6), 0 0 0 1px rgba(195,34,31,0.1);
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  transition: 
    opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
    visibility 0.4s;
  z-index: 2000;
}

/* Invisible bridge to prevent mouse-out gap */
.nav-drop-panel::after {
  content: '';
  position: absolute;
  top: -1.2rem;
  left: 0;
  right: 0;
  height: 1.2rem;
  background: transparent;
  z-index: -1;
}

.nav-drop-panel::before {
  content: '';
  position: absolute;
  top: -6px; left: 50%;
  transform: translateX(-50%);
  width: 12px; height: 12px;
  background: rgba(16, 16, 28, 0.96);
  border-left: 1px solid rgba(255,255,255,0.12);
  border-top: 1px solid rgba(255,255,255,0.12);
  clip-path: polygon(0 100%, 50% 0, 100% 100%);
}
.nav-dropdown:hover .nav-drop-panel {
  opacity: 1;
  pointer-events: auto;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  /* Slightly faster on enter for responsiveness */
  transition-duration: 0.35s;
}

/* Each row inside the panel */
.nav-drop-panel a {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.75rem 0.85rem;
  border-radius: var(--radius-sm);
  color: var(--clr-text);
  /* Initial state for staggered entry */
  opacity: 0;
  transform: translateY(12px);
  /* Staggered entry transitions */
  transition: 
    background 0.25s ease,
    color 0.25s ease,
    opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.nav-drop-panel a:hover {
  background: rgba(195,34,31,0.1);
  color: var(--clr-white);
}

/* On hover of dropdown: trigger items with delay */
.nav-dropdown:hover .nav-drop-panel a {
  opacity: 1;
  transform: translateY(0);
}
.nav-dropdown:hover .nav-drop-panel a:nth-child(1) { transition-delay: 0.05s; }
.nav-dropdown:hover .nav-drop-panel a:nth-child(2) { transition-delay: 0.12s; }
.nav-dropdown:hover .nav-drop-panel a:nth-child(3) { transition-delay: 0.19s; }
.nav-dropdown:hover .nav-drop-panel a:nth-child(4) { transition-delay: 0.26s; }
.nav-dropdown:hover .nav-drop-panel a:nth-child(5) { transition-delay: 0.33s; }
.nav-drop-panel a:hover .drop-icon { color: var(--clr-red); }

.drop-icon {
  width: 32px; height: 32px;
  border-radius: 6px;
  background: rgba(255,255,255,0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--clr-text-muted);
  transition: color 0.2s ease, background 0.2s ease;
}

.drop-text {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.drop-text strong {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--clr-white);
  font-family: var(--font-body);
}
.drop-text em {
  font-size: 0.73rem;
  font-style: normal;
  color: var(--clr-text-muted);
  line-height: 1.3;
}

/* Coming Soon badge inside dropdown */
.drop-badge {
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.15rem 0.5rem;
  border-radius: 50px;
  background: linear-gradient(135deg, var(--clr-plum), var(--clr-red));
  color: #fff;
  line-height: 1.5;
}

/* Dim the Patent item slightly to signal it's not live */
.drop-item-soon { opacity: 0.75; }
.drop-item-soon:hover { opacity: 1; }

/* ── TOUCH: CLICK-TO-OPEN DROPDOWNS (no-hover devices) ──────────
   Mirrors the :hover state for the .open class that navbar.js toggles,
   so the desktop dropdowns are fully usable on touch tablets/laptops
   that never fire :hover. Phones (≤900px) use the accordion instead. */
.nav-dropdown.open .nav-drop-trigger { color: var(--clr-white); }
.nav-dropdown.open .nav-drop-trigger::after { transform: scaleX(1); }
.nav-dropdown.open .nav-chevron { transform: rotate(180deg); }
.nav-dropdown.open .nav-drop-panel {
  opacity: 1;
  pointer-events: auto;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  transition-duration: 0.35s;
}
.nav-dropdown.open .nav-drop-panel a {
  opacity: 1;
  transform: translateY(0);
}

/* ── MOBILE NAV - ACCORDION GROUPS ─────────────────────────── */
.mob-group {
  width: 100%;
}

.mob-group-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: transparent;
  border: none;
  font-family: var(--font-body);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  cursor: pointer;
  padding: 0.25rem 0;
  letter-spacing: 0.02em;
  transition: color 0.2s ease;
}
.mob-group-trigger:hover,
.mob-group.open .mob-group-trigger { color: var(--clr-white); }

.mob-chevron {
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.mob-group.open .mob-chevron { transform: rotate(180deg); }

.mob-group-panel {
  display: flex;
  flex-direction: column;
  gap: 0;
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.35s ease;
  padding-left: 1rem;
  border-left: 2px solid rgba(195,34,31,0.3);
  margin-left: 0.5rem;
}
.mob-group.open .mob-group-panel {
  max-height: 280px;
}
/* Higher specificity than .mobile-nav a (same 0,1,1 weight, declared
   later) so submenu rows keep their small subordinate size instead
   of inheriting the 2rem headline style meant for top-level links. */
.mobile-nav .mob-group-panel a {
  padding: 0.6rem 0;
  font-family: var(--font-body);
  font-size: 0.95rem;
  letter-spacing: normal;
  color: var(--clr-text-muted);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.mobile-nav .mob-group-panel a:last-child { border-bottom: none; }
.mobile-nav .mob-group-panel a:hover { color: var(--clr-white); }

/* Mobile Coming Soon badge */
.mob-badge {
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.12rem 0.45rem;
  border-radius: 50px;
  background: linear-gradient(135deg, var(--clr-plum), var(--clr-red));
  color: #fff;
  vertical-align: middle;
  margin-left: 0.4rem;
}
.mob-soon { opacity: 0.8; }

/* ── MOBILE NAV ──────────────────────────────────────────── */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(10,10,16,0.97);
  backdrop-filter: blur(20px);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-family: var(--font-title);
  font-size: 2rem;
  letter-spacing: 0.08em;
  color: var(--clr-white);
  transition: var(--transition-fast);
}
.mobile-nav a:hover { color: var(--clr-red); }