/* ============================================================
   KOFFEX DIGITAL — NAV.CSS
   Sticky header with dropdowns
   ============================================================ */

#site-header {
  position: sticky;
  top: 0;
  z-index: 900;
  background: rgba(5, 5, 5, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 200, 83, 0.12);
  height: 68px;
  display: flex;
  align-items: center;
  transition: box-shadow 0.3s;
}
#site-header.scrolled {
  box-shadow: 0 4px 40px rgba(0, 0, 0, 0.8);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--sp-6);
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  text-decoration: none;
  flex-shrink: 0;
}
.nav-logo-icon {
  width: 36px; height: 36px;
  flex-shrink: 0;
}
.nav-logo-text {
  font-family: var(--font-head);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--clr-white);
  letter-spacing: -0.02em;
  line-height: 1;
}
.nav-logo-text span { color: var(--clr-emerald); }
.nav-logo-sub {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--clr-grey-dim);
  margin-top: 2px;
}

/* Nav Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  list-style: none;
}

.nav-item { position: relative; }

.nav-link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0.4rem 0.75rem;
  font-family: var(--font-head);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--clr-grey);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  white-space: nowrap;
}
.nav-link:hover,
.nav-link.active { color: var(--clr-white); }
.nav-link.active { color: var(--clr-emerald); }

.nav-link svg {
  width: 14px; height: 14px;
  transition: transform 0.2s;
  flex-shrink: 0;
}
.nav-item:hover > .nav-link svg { transform: rotate(180deg); }

/* Dropdown */
.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  min-width: 220px;
  background: #0d0d0d;
  border: 1px solid rgba(0, 200, 83, 0.2);
  border-radius: var(--radius);
  padding: var(--sp-2);
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(-8px);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8), 0 0 30px rgba(0,200,83,0.05);
  z-index: 100;
}
.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.nav-dropdown a {
  display: block;
  padding: 0.6rem 0.875rem;
  font-size: var(--text-sm);
  color: var(--clr-grey);
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  white-space: nowrap;
}
.nav-dropdown a:hover {
  color: var(--clr-emerald);
  background: rgba(0,200,83,0.08);
}

/* Nav CTA */
.nav-cta-wrap {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}
.nav-hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--clr-offwhite);
  transition: var(--transition);
  transform-origin: center;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav */
.nav-mobile {
  display: none;
  position: fixed;
  top: 104px; /* ticker + header */
  left: 0; right: 0;
  background: rgba(5,5,5,0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0,200,83,0.15);
  padding: var(--sp-6);
  z-index: 800;
  max-height: calc(100vh - 104px);
  overflow-y: auto;
  flex-direction: column;
  gap: var(--sp-2);
}
.nav-mobile.open { display: flex; }

.nav-mobile-link {
  padding: 0.75rem 0;
  font-family: var(--font-head);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--clr-grey);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  display: block;
  transition: color 0.2s;
}
.nav-mobile-link:hover { color: var(--clr-emerald); }
.nav-mobile-link.active { color: var(--clr-emerald); }

.nav-mobile-section {
  padding-top: var(--sp-2);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-emerald);
  margin-bottom: var(--sp-1);
}
.nav-mobile-sub {
  padding: 0.5rem 0 0.5rem 1rem;
  font-size: var(--text-sm);
  color: var(--clr-grey-dim);
  display: block;
  transition: color 0.2s;
}
.nav-mobile-sub:hover { color: var(--clr-emerald); }

.nav-mobile-cta { margin-top: var(--sp-4); display: flex; flex-direction: column; gap: var(--sp-3); }

@media (max-width: 1024px) {
  .nav-links { display: none; }
  .nav-cta-wrap .btn { display: none; }
  .nav-hamburger { display: flex; }
}
@media (max-width: 480px) {
  .nav-inner { padding: 0 var(--sp-4); }
}