.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  transition: background var(--transition-base), border-color var(--transition-base);
}

.nav::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--color-bg);
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
  border-bottom: 1px solid transparent;
  z-index: -1;
}

.nav--scrolled::after {
  opacity: 1;
  border-color: var(--color-border);
}

.nav__inner {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ─── Logo ───────────────────────────────── */
.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}

.nav__logo-icon {
  width: 44px;
  height: 44px;
}

/* Yatay wordmark — "Ortak Zemin" yan yana */
.nav__logo-wordmark {
  font-size: var(--text-lg);
  font-weight: 800;
  letter-spacing: var(--tracking-tight);
  line-height: 1;
  white-space: nowrap;
}

.nav__logo-wordmark__accent {
  color: var(--color-accent);
}

.nav__logo-text {
  /* Eski tanım, geriye uyumluluk için duruyor */
  font-size: var(--text-sm);
  font-weight: 800;
  letter-spacing: var(--tracking-tight);
  line-height: 1.1;
}

/* ─── Links ──────────────────────────────── */
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav__link {
  display: flex;
  align-items: center;
  padding: 0.5rem 0.875rem;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background var(--transition-fast);
  text-decoration: none;
}

.nav__link:hover {
  color: var(--color-text);
  background: var(--color-surface);
}

.nav__link--active {
  color: var(--color-text);
}

/* ─── CTA ────────────────────────────────── */
.nav__cta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* ─── Hamburger ──────────────────────────── */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.nav__hamburger:hover {
  background: var(--color-surface);
}

.nav__hamburger span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base), width var(--transition-base);
  transform-origin: center;
}

.nav--open .nav__hamburger span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav--open .nav__hamburger span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav--open .nav__hamburger span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ─── Mobile drawer ──────────────────────── */
.nav__drawer {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  z-index: var(--z-drawer);
  display: flex;
  flex-direction: column;
  padding: var(--space-6) var(--container-padding);
  gap: var(--space-2);
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
  transition: transform 350ms var(--ease-out), opacity 350ms var(--ease-out);
  border-top: 1px solid var(--color-border);
}

.nav--open .nav__drawer {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.nav__drawer-link {
  display: flex;
  align-items: center;
  padding: var(--space-4) var(--space-2);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border-dim);
  transition: color var(--transition-fast);
}

.nav__drawer-link:hover { color: var(--color-text); }

.nav__drawer-cta {
  margin-top: var(--space-6);
}

@media (max-width: 768px) {
  .nav__links,
  .nav__cta { display: none; }
  .nav__hamburger { display: flex; }
}