/* ═══════════════════════════════════════════════════════
   IKIGAI · Floating Nav styles
   ═══════════════════════════════════════════════════════ */

.nav {
  position: fixed;
  top: 16px; left: 50%;
  transform: translateX(-50%) translateY(0);
  width: calc(100% - 32px);
  max-width: 1240px;
  z-index: 100;
  transition:
    transform 0.6s cubic-bezier(0.16, 1, 0.3, 1),
    opacity 0.5s ease,
    backdrop-filter 0.5s ease;
}
.nav.is-hidden {
  transform: translateX(-50%) translateY(-120%);
  opacity: 0;
  pointer-events: none;
}
.nav__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 32px;
  padding: 12px 16px 12px 20px;
  background: rgba(245,246,250,0.62);
  border: 1px solid rgba(255,255,255,0.5);
  border-radius: 100px;
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  box-shadow:
    0 0 0 1px rgba(160,180,255,0.10),
    0 12px 40px rgba(80,100,200,0.08),
    inset 0 1px 0 rgba(255,255,255,0.7);
  transition: padding 0.4s ease, background 0.4s ease;
}
.nav.is-scrolled .nav__inner {
  background: rgba(245,246,250,0.84);
  padding: 8px 14px 8px 18px;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.nav__brand-orb {
  width: 18px; height: 18px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #fff, #7EF6E2 50%, #6EA8FF);
  box-shadow:
    inset 0 1px 1px rgba(255,255,255,0.6),
    0 0 12px rgba(126,246,226,0.45);
  animation: breathe 3.6s ease-in-out infinite;
}
.nav__brand-word {
  font-size: 19px;
  color: var(--ik-ink-deep);
  letter-spacing: 0.08em;
}

.nav__links {
  display: flex;
  justify-content: center;
  align-items: center;
  list-style: none;
  gap: 4px;
}
.nav__links a {
  display: block;
  padding: 8px 14px;
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: -0.005em;
  color: var(--ik-ink-mid);
  border-radius: 100px;
  transition: background 0.3s ease, color 0.3s ease;
}
.nav__links a:hover {
  background: rgba(255,255,255,0.7);
  color: var(--ik-ink-deep);
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px 9px 18px;
  background: var(--ik-ink-deep);
  color: var(--ik-canvas);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.005em;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 14px rgba(7,8,16,0.18);
}
.nav__cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(7,8,16,0.28);
}

@media (max-width: 820px) {
  .nav__links { display: none; }
  .nav__inner { grid-template-columns: auto 1fr auto; padding: 10px 12px 10px 18px; }
  .nav.is-scrolled .nav__inner { padding: 8px 12px 8px 16px; }
}