/* ═══════════════════════════════════════════════════════
   KIF — Navigation
   ═══════════════════════════════════════════════════════ */

nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  transition: all .5s cubic-bezier(.16, 1, .3, 1);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

/* When at top (hero), bottom border fades to transparent */
nav:not(.scrolled) {
  border-bottom-color: transparent;
}

nav.scrolled {
  top: .85rem;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 3rem);
  max-width: 1220px;
  background: rgba(13, 17, 23, 0.55);
  backdrop-filter: blur(32px) saturate(2) brightness(1.1);
  -webkit-backdrop-filter: blur(32px) saturate(2) brightness(1.1);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 6px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.45), 0 1px 0 rgba(255, 255, 255, 0.06) inset, 0 0 0 1px rgba(232, 97, 26, 0.1);
}

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: padding .4s cubic-bezier(.16, 1, .3, 1);
}

/* 20% reduced vertical padding when floating */
nav.scrolled .nav-inner {
  padding: 0.55rem 2rem;
}

/* Shrink logo when floating */
nav.scrolled .nav-logo-img {
  height: 50px;
}

.nav-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.nav-logo-img {
  height: 72px;
  width: auto;
  object-fit: contain;
  transition: opacity .3s, transform .3s;
}

.nav-logo:hover .nav-logo-img {
  opacity: .85;
  transform: scale(1.03);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-link {
  font-size: .78rem;
  font-weight: 500;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--frost-dim);
  text-decoration: none;
  position: relative;
  transition: color .3s;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width .4s cubic-bezier(.16, 1, .3, 1);
}

.nav-link:hover {
  color: var(--frost);
}

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



.nav-cta {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--gold);
  border: none;
  padding: .65rem 1.4rem;
  border-radius: 2px;
  cursor: pointer;
  text-decoration: none;
  transition: all .3s cubic-bezier(.16, 1, .3, 1);
}

.nav-cta:hover {
  background: var(--gold-bright);
  transform: translateY(-1px);
  box-shadow: 0 8px 30px rgba(232, 97, 26, .3);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--frost-dim);
  transition: all .3s;
}

.hamburger.open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

.mobile-menu {
  max-height: 0;
  overflow: hidden;
  background: rgba(7, 9, 15, .97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--edge);
  transition: max-height .4s cubic-bezier(.16, 1, .3, 1);
}

.mobile-menu.open {
  max-height: 400px;
}

.mobile-menu-inner {
  padding: 1.5rem 2rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.mobile-menu a {
  color: var(--frost-dim);
  text-decoration: none;
  font-size: .9rem;
  font-weight: 500;
  letter-spacing: .08em;
  transition: color .3s;
}

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