/* ── Header wrapper ─────────────────────────────────────── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background var(--mid) var(--ease),
              border-color var(--mid) var(--ease),
              backdrop-filter var(--mid) var(--ease);
}

.site-header.scrolled {
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container);
  margin: 0 auto;
  padding: 20px var(--container-pad);
  gap: 32px;
}

/* ── Logo ───────────────────────────────────────────────── */
.nav-logo { flex-shrink: 0; color: var(--gold); text-decoration: none; font-family: var(--font-heading); font-size: 24px; font-weight: 700; letter-spacing: 0.1em; }
.nav-logo-svg { height: 28px; width: auto; }

/* ── Menü ───────────────────────────────────────────────── */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0; padding: 0;
  flex: 1;
  justify-content: center;
}

.nav-menu a,
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  color: var(--muted);
  text-decoration: none;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: color var(--fast) var(--ease);
  white-space: nowrap;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0; left: 12px;
  width: calc(100% - 24px);
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--fast) var(--ease);
}

.nav-link:hover       { color: var(--white); }
.nav-link:hover::after { transform: scaleX(1); }

/* Aktif sayfa */
.nav-link--active {
  color: var(--gold);
  font-weight: 500;
}
.nav-link--active::after {
  transform: scaleX(1);
}

/* ── Sağ grup ───────────────────────────────────────────── */
.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

/* CTA Butonu */
.btn-cta.nav-cta {
  background: var(--gold);
  color: var(--black);
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  transition: filter var(--fast) var(--ease);
  white-space: nowrap;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.btn-cta.nav-cta:hover { filter: brightness(1.15); }

/* ── Hamburger ──────────────────────────────────────────── */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  min-width: 44px; min-height: 44px;
  align-items: center;
  justify-content: center;
}
.hamburger-line {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--mid) var(--ease),
              opacity var(--fast) var(--ease);
  transform-origin: center;
}
.hamburger[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.hamburger[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0; transform: scaleX(0);
}
.hamburger[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ── Mobil menü ─────────────────────────────────────────── */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--black);
  z-index: 99;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px var(--container-pad) 40px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--mid) var(--ease),
              visibility 0ms var(--mid);
  overscroll-behavior: contain;
}
.mobile-menu[aria-hidden="false"] {
  opacity: 1; visibility: visible; pointer-events: auto;
  transition: opacity var(--mid) var(--ease), visibility 0ms;
}
.mobile-menu-close {
  position: absolute;
  top: 24px; right: 24px;
  background: none; border: none; cursor: pointer;
  color: var(--white); padding: 8px;
  min-width: 44px; min-height: 44px;
  display: flex; align-items: center; justify-content: center;
}
.mobile-menu-list {
  list-style: none; margin: 0; padding: 0;
  text-align: center; width: 100%;
}
.mobile-menu-list a {
  display: block;
  padding: 16px 24px;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  color: var(--white);
  text-decoration: none;
  transition: color var(--fast) var(--ease);
}
.mobile-menu-list a:hover,
.mobile-menu-list a.nav-link--active { color: var(--gold); }
.mobile-cta {
  display: flex; align-items: center; justify-content: center;
  width: 100%; margin-top: 32px;
}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 1024px) {
  .nav-menu { gap: 0; }
  .nav-menu a { padding: 8px 8px; font-size: 11px; }
}
@media (max-width: 768px) {
  .nav-menu,
  .btn-cta.nav-cta { display: none; }
  .hamburger { display: flex; }
  body.menu-open { overflow: hidden; position: fixed; width: 100%; }
}