/* ═══ NAV ═════════════════════════════════════════════════════════════════
   nav, .nav-logo, .nav-ico, .nav-wordmark, .nav-links, .nav-link,
   .nav-right, .lang-btn, .nav-cta + @keyframes logo-pulse
   ═══════════════════════════════════════════════════════════════════════════ */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  background: rgba(10, 10, 16, 0.85);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}
nav.scrolled {
  border-bottom-color: var(--border);
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-shrink: 0;
  outline-offset: 4px;
}
.nav-ico {
  width: 22px;
  height: 22px;
  border-radius: 5px;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition:
    transform 0.35s ease,
    box-shadow 0.35s ease;
  animation: logo-pulse 3s ease-in-out infinite;
}
@keyframes logo-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 rgba(124, 147, 195, 0);
  }
  50% {
    box-shadow: 0 0 12px rgba(124, 147, 195, 0.25);
  }
}
.nav-logo:hover .nav-ico {
  transform: rotate(15deg);
  box-shadow: 0 0 18px rgba(124, 147, 195, 0.4);
  animation-play-state: paused;
}
.nav-ico svg {
  width: 10px;
  height: 12px;
  display: block;
}
.nav-wordmark {
  font-family: var(--mono);
  font-size: 13.5px;
  font-weight: 400;
  letter-spacing: 0.01em;
  white-space: nowrap;
  line-height: 1;
  color: var(--text2);
}
.nav-wordmark .nw-it {
  color: var(--text);
  font-weight: 600;
}
.nav-wordmark .nw-tld {
  color: var(--text4);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
}
.nav-link {
  font-size: 13px;
  color: var(--text3);
  padding: 6px 12px;
  border-radius: 6px;
  transition: color 0.2s;
}
.nav-link:hover {
  color: var(--text);
}
.nav-link.active {
  color: var(--accent);
}
.nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.lang-btn {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text3);
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  transition:
    color 0.2s,
    border-color 0.2s;
  letter-spacing: 0.06em;
}
.lang-btn:hover {
  color: var(--text);
  border-color: var(--border-hover);
}
.nav-cta {
  font-size: 13px;
  font-weight: 600;
  padding: 8px 18px;
  background: var(--accent);
  color: #0a0a10;
  border-radius: 8px;
  transition:
    background 0.2s,
    transform 0.2s;
  display: inline-block;
}
.nav-cta:hover {
  background: var(--accent2);
  transform: translateY(-1px);
}
.nav-kbd-hint {
  font-family: var(--mono);
  font-size: 10px;
  padding: 2px 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text4);
  margin-left: 6px;
}