/* ===== Navigation ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  z-index: 100;
  transition:
    background 0.5s var(--ease-out),
    box-shadow 0.5s var(--ease-out),
    backdrop-filter 0.5s var(--ease-out);
}

.nav.is-scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--border-light);
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  letter-spacing: var(--tracking-tight);
  color: var(--text-primary);
}

.nav__logo-img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
}

.nav__logo-text {
  font-size: 1.1rem;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  transition: color 0.3s ease;
}

.nav__link:hover {
  color: var(--accent);
}

.nav__link::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
  transition: width 0.3s var(--ease-out);
}

.nav__link:hover::after {
  width: 100%;
}

/* ===== Responsive nav ===== */
@media (max-width: 768px) {
  .nav {
    padding: 0.875rem 1.25rem;
  }

  .nav__links {
    gap: 1rem;
  }

  .nav__logo-text {
    font-size: 1rem;
  }
}