/* ══════════════════════════════════════
   nav.css — Navigation sticky
══════════════════════════════════════ */

nav {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 200;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.85rem 2.5rem;
  background: var(--nav);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

/* Logo */
.logo {
  font-family: 'Space Mono', monospace;
  font-size: 0.88rem;
  color: var(--a);
  letter-spacing: 0.05em;
}

.logo span { color: var(--muted); }

/* Nav links */
.nl {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nl a {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  transition: color 0.2s;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
}

.nl a:hover,
.nl a.act {
  color: var(--a);
  border-bottom-color: var(--a);
}

/* Right side */
.nav-right {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

/* ── Language switcher ── */
.lsw {
  display: flex;
  gap: 0.28rem;
  align-items: center;
  border-right: 1px solid var(--border);
  padding-right: 0.65rem;
  margin-right: 0.15rem;
}

.lb {
  font-family: 'Space Mono', monospace;
  font-size: 0.6rem;
  padding: 0.25rem 0.5rem;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: all 0.2s;
  font-weight: 700;
}

.lb:hover { border-color: var(--b); color: var(--b); }
.lb.on    { border-color: var(--a); color: var(--a); }

[data-theme="hacker"] .lb.on { box-shadow: 0 0 8px var(--a); }

/* ── Theme switcher ── */
.tsw {
  display: flex;
  gap: 0.28rem;
  align-items: center;
}

.tb {
  font-family: 'Space Mono', monospace;
  font-size: 0.6rem;
  padding: 0.25rem 0.55rem;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: all 0.2s;
}

.tb:hover, .tb.on { border-color: var(--a); color: var(--a); }
[data-theme="hacker"] .tb.on { box-shadow: 0 0 8px var(--a); }

/* ── Hamburger ── */
.hbg {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  background: none;
  border: none;
  margin-left: 0.3rem;
}

.hbg span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--muted);
  transition: all 0.2s;
}

/* ── Loading pulse for stats ── */
.stat-loading {
  animation: statPulse 1.5s ease-in-out infinite;
}

@keyframes statPulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}