/* ============================================================
   Top nav (R6) — thin, sticky, almost invisible.
   The brand bullet is STATIC; only the Ask Alex pill dot pulses.
   ============================================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 0.875rem;
  padding-inline: var(--gutter);
  background: linear-gradient(
    to bottom,
    rgba(26, 26, 46, 0.85) 0%,
    rgba(26, 26, 46, 0) 100%
  );
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: background-color var(--dur-base) var(--ease-out),
    border-color var(--dur-base) var(--ease-out);
}

body[data-scrolled='true'] .nav {
  background: rgba(26, 26, 46, 0.82);
  border-bottom: 1px solid var(--color-border);
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-fg);
  font-size: 1rem;
}
.nav__brand .brand-dot {
  width: 6px;
  height: 6px;
  margin-left: 2px;
}

.nav__right {
  display: inline-flex;
  align-items: center;
  gap: clamp(0.5rem, 1.5vw, 1rem);
}

/* ---------- Ask Alex pill ---------- */

.ask-alex-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-fg);
  height: 36px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid rgba(233, 69, 96, 0.4);
  background: transparent;
  letter-spacing: -0.005em;
  cursor: pointer;
  transition: border-color 180ms var(--ease-out),
    background-color 180ms var(--ease-out);
}
.ask-alex-pill:hover {
  border-color: rgba(233, 69, 96, 0.7);
  background: rgba(233, 69, 96, 0.05);
}

/* the heartbeat dot — the ONLY pulsing dot on the page */
.ask-alex-pill__dot {
  position: relative;
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-red);
  box-shadow: 0 0 8px var(--color-red-glow);
  flex-shrink: 0;
}
.ask-alex-pill__dot::before,
.ask-alex-pill__dot::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid var(--color-red);
  opacity: 0;
  transform: scale(1);
}
@media (prefers-reduced-motion: no-preference) {
  .ask-alex-pill__dot::before {
    animation: ask-pill-ping 5s ease-out infinite;
  }
  .ask-alex-pill__dot::after {
    animation: ask-pill-ping 5s ease-out infinite;
    animation-delay: 300ms;
  }
}
@keyframes ask-pill-ping {
  0% {
    opacity: 0.7;
    transform: scale(1);
  }
  70%, 100% {
    opacity: 0;
    transform: scale(3.2);
  }
}

@media (max-width: 540px) {
  .ask-alex-pill__label-full {
    display: none;
  }
}
@media (min-width: 541px) {
  .ask-alex-pill__label-short {
    display: none;
  }
}

/* ---------- Lang toggle ---------- */

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-muted-soft);
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.015);
  transition: border-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out);
}
.lang-toggle button {
  font-family: inherit;
}
.lang-toggle:hover {
  color: var(--color-fg);
  border-color: var(--color-border-strong);
}
.lang-toggle__active {
  color: var(--color-fg);
}
.lang-toggle__divider {
  opacity: 0.4;
}

.nav__login {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-muted);
  transition: color var(--dur-fast) var(--ease-out);
}
.nav__login:hover {
  color: var(--color-fg);
}

@media (max-width: 540px) {
  .nav__login,
  .lang-toggle {
    display: none;
  }
}