/* ═══════════════════════════════════════
   BatuhanWeb — nav.css
   Navigasyon & Mobil Menü
   ═══════════════════════════════════════ */

nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 2.5rem;
  background: rgba(10,22,40,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow .3s;
}

nav.scrolled {
  box-shadow: 0 4px 24px rgba(0,0,0,.4);
}

/* Logo */
.logo {
  font-family: 'Sora', sans-serif;
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--white);
  text-decoration: none;
  letter-spacing: -0.5px;
  flex-shrink: 0;
}
.logo span { color: var(--red); }

/* Desktop nav links */
.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: .88rem;
  font-weight: 500;
  transition: color .2s;
  position: relative;
  padding-bottom: 2px;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 1px;
  background: var(--red);
  transform: scaleX(0);
  transition: transform .25s;
}

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

/* Right side: lang + hamburger */
.nav-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Language switcher */
.lang-switcher {
  display: flex;
  gap: 5px;
}

.lang-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 4px 9px;
  border-radius: 5px;
  cursor: pointer;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .08em;
  transition: var(--trans);
  line-height: 1;
}

.lang-btn:hover {
  border-color: var(--red);
  color: var(--white);
}

.lang-btn.active {
  background: var(--red);
  border-color: var(--red);
  color: #fff;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  background: none;
  border: none;
  border-radius: 6px;
  transition: background .2s;
}

.hamburger:hover { background: rgba(255,255,255,.08); }

.hamburger span {
  width: 22px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  display: block;
  transition: var(--trans);
}

/* Open state */
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* Mobile overlay menu */
.mobile-menu {
  display: none;
  flex-direction: column;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: fixed;
  top: 62px; left: 0; right: 0;
  z-index: 299;
  max-height: calc(100vh - 62px);
  overflow-y: auto;
}

.mobile-menu.open { display: flex; }

.mobile-menu a {
  padding: .9rem 2.5rem;
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  font-size: .95rem;
  border-bottom: 1px solid var(--border);
  transition: color .2s, background .2s;
}

.mobile-menu a:hover {
  color: var(--white);
  background: rgba(255,255,255,.04);
}

/* Lang switcher inside mobile menu */
.mobile-lang {
  display: flex;
  gap: 8px;
  padding: 1rem 2.5rem;
  flex-wrap: wrap;
}

.mobile-lang .lang-btn {
  font-size: .75rem;
  padding: 6px 14px;
}