/* ============================================
   NIM-ACh — Navigation
   ============================================ */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 32px;
  background: rgba(6, 14, 30, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 0.5px solid var(--glass-border);
  transition: padding var(--dur-mid) var(--ease-out),
              background var(--dur-mid) var(--ease-out);
}

.nav.scrolled {
  padding: 10px 32px;
  background: rgba(6, 14, 30, 0.95);
}

/* ── Logo ── */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 11px;
  cursor: pointer;
  text-decoration: none;
  flex-shrink: 0;
}

.nav-logo-mark {
  width: 36px;
  height: 36px;
  background: var(--grad-brand);
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  transition: transform var(--dur-fast) var(--ease-spring);
}

.nav-logo-mark::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,.14));
  pointer-events: none;
}

.nav-logo:hover .nav-logo-mark {
  transform: rotate(-4deg) scale(1.05);
}

.nav-logo-mark svg {
  width: 22px;
  height: 22px;
  position: relative;
  z-index: 1;
}

.nav-brand {
  display: flex;
  flex-direction: column;
}

.nav-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--t-hero);
  letter-spacing: .04em;
  line-height: 1.2;
}

.nav-sub {
  font-size: 9px;
  color: var(--t-muted);
  letter-spacing: .12em;
  text-transform: uppercase;
}

/* ── Links ── */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-link {
  font-size: 12px;
  color: var(--t-muted);
  padding: 7px 13px;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: color var(--dur-fast), background var(--dur-fast);
  position: relative;
  white-space: nowrap;
  text-decoration: none;
}

.nav-link:hover {
  color: var(--t-hero);
  background: var(--glass);
}

.nav-link.active {
  color: var(--t-hero);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 3px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--c-coral);
}

/* ── Right side ── */
.nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.nav-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--c-blue-light);
  background: rgba(59, 122, 191, .1);
  border: 0.5px solid rgba(59, 122, 191, .22);
  padding: 5px 12px;
  border-radius: var(--r-full);
}

.nav-cta {
  font-size: 12px;
  font-weight: 500;
  padding: 8px 18px;
  background: var(--grad-brand);
  color: #fff;
  border-radius: var(--r-sm);
  transition: opacity var(--dur-fast), transform var(--dur-fast) var(--ease-spring);
  text-decoration: none;
}

.nav-cta:hover {
  opacity: .88;
  transform: translateY(-1px);
}

/* ── Theme toggle ── */
.theme-toggle {
  width: 34px;
  height: 34px;
  border-radius: var(--r-sm);
  background: var(--glass);
  border: 0.5px solid var(--glass-border);
  color: var(--t-muted);
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--dur-fast), color var(--dur-fast),
              transform var(--dur-fast) var(--ease-spring);
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: var(--glass-hover);
  color: var(--t-hero);
  transform: rotate(18deg) scale(1.08);
}

/* ── Mobile toggle ── */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  padding: 6px;
  border-radius: 6px;
  background: var(--c-navy-3);
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--t-hero);
  border-radius: 2px;
  transition: transform .25s var(--ease-out), opacity .25s;
}

/* ── Mobile menu ── */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-pill  { display: none; }
  .nav-hamburger { display: flex; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 60px; left: 0; right: 0;
    background: rgba(6,14,30,.97);
    backdrop-filter: blur(20px);
    padding: 16px;
    gap: 4px;
    border-bottom: 0.5px solid var(--glass-border);
  }

  .nav-links.open .nav-link {
    padding: 12px 16px;
    font-size: 14px;
    border-radius: var(--r-md);
  }
}

/* ── Logo image variant ── */
.nav-logo-mark--img {
  background: transparent !important;
  box-shadow: none;
  overflow: visible;
}

.nav-logo-mark--img::after { display: none; }

.nav-logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: var(--r-sm);
  display: block;
}