/* HEADER */
.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 12px 0;
}

.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;

  border-radius: 18px;
  padding: 10px 12px;
  background: rgba(10, 14, 25, 0.35);
  border: 1px solid rgba(255,255,255,0.10);
  backdrop-filter: blur(12px);
  transition: background .25s ease, border-color .25s ease, transform .25s ease;
}

/* scroll olunca daha “solid” */
.site-header.is-scrolled .header-inner{
  background: rgba(10, 14, 25, 0.62);
  border-color: rgba(255,255,255,0.14);
  transform: translateY(0);
}

.brand{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
}

.brand-logo{
  width: 64px;
  height: 64px;
  object-fit: contain;

  filter:
    brightness(1.15)
    contrast(1.1)
    drop-shadow(0 0 16px rgba(72,170,255,0.45))
    drop-shadow(0 0 36px rgba(60,255,180,0.25));

  transition: transform .25s ease, filter .25s ease;
}

.brand-text{
  font-size: 18px;
  font-weight: 600;
  color: #eaf0ff;
}

/* Menü */
.nav{
  display: flex;
  align-items: center;
  gap: 14px;
}

.nav a{
  text-decoration: none;
  color: rgba(234,240,255,0.86);
  font-size: 14px;
  padding: 8px 10px;
  border-radius: 12px;
  transition: background .2s ease, color .2s ease;
  position: relative;
}

.nav a:hover{
  background: rgba(255,255,255,0.06);
  color: #fff;
}

/* hover underline glow */
.nav a::after{
  content:"";
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 4px;
  height: 1px;
  background: linear-gradient(90deg, rgba(72,170,255,0.0), rgba(72,170,255,0.7), rgba(60,255,180,0.7), rgba(60,255,180,0.0));
  opacity: 0;
  transform: scaleX(0.8);
  transition: opacity .2s ease, transform .2s ease;
}
.nav a:hover::after{
  opacity: 1;
  transform: scaleX(1);
}

.header-actions{
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Burger */
.burger{
  width: 44px;
  height: 40px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.04);
  border-radius: 14px;
  display: none;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
}
.burger span{
  display: block;
  width: 18px;
  height: 2px;
  background: rgba(234,240,255,0.9);
  border-radius: 9px;
}

/* Mobil menü */
.mobile-nav{
  display: none;
  width: min(1100px, 92vw);
  margin: 10px auto 0;
  padding: 10px;
  border-radius: 18px;
  background: rgba(10, 14, 25, 0.62);
  border: 1px solid rgba(255,255,255,0.12);
  backdrop-filter: blur(12px);
}
.mobile-nav a{
  display: block;
  padding: 12px 12px;
  border-radius: 14px;
  text-decoration: none;
  color: rgba(234,240,255,0.9);
}
.mobile-nav a:hover{
  background: rgba(255,255,255,0.06);
}

/* Responsive */
@media (max-width: 920px){
  .nav { display: none; }
  .burger{ display: inline-flex; }
}

/* Mobil menü açıkken */
.site-header.is-open #mobileNav{
  display: block;
}