body {
  margin: 0;
  font-family: 'Montserrat', Arial, sans-serif;
  background: #111218;
  color: #f4f6fb;
  min-height: 100vh;
  overflow-x: hidden;
}

.hero-bg, .futuristic-bg {
  position: fixed;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  top: 0; left: 0;
  background: radial-gradient(circle at 70% 50%, #00fff033 0%, #7928ca11 100%),
              radial-gradient(circle at 20% 80%, #7928ca33 0%, #111218 100%);
  pointer-events: none;
  animation: move-bg 20s infinite alternate linear;
  filter: blur(2px) brightness(1.09);
}

@keyframes move-bg {
  0% { background-position: 70% 50%, 20% 80%;}
  100% { background-position: 60% 55%, 30% 70%;}
}

header {
  position: relative;
  z-index: 2;
}
.main-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2.5rem 5vw 1rem 5vw;
}
.logo {
  font-size: 2.3rem;
  font-weight: 900;
  letter-spacing: 2px;
  color: #fff;
  text-shadow: 0 0 18px #7928ca88, 0 0 2px #0ff;
  font-family: 'Montserrat', Arial, sans-serif;
  /* Fütüristik tonlar için küçük ek efekt */
  background: linear-gradient(90deg, #00fff0 0%, #7928ca 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 20px #00fff066);
}
.neon {
  color: #00fff0;
  text-shadow: 0 0 7px #00fff088, 0 0 32px #7928ca88;
}
ul {
  list-style: none;
  display: flex;
  gap: 2.5rem;
}
ul li a {
  color: #fff;
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 1px;
  transition: color .17s;
  position: relative;
}
ul li a::after {
  content: "";
  display: block;
  margin: auto;
  height: 2.5px;
  width: 0px;
  background: linear-gradient(90deg, #00fff0 0%, #7928ca 100%);
  border-radius: 2px;
  transition: width .22s;
}
ul li a:hover {
  color: #00fff0;
}
ul li a:hover::after {
  width: 80%;
}
.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}
.flag {
  width: 34px;
  border-radius: 4px;
  border: 1.2px solid #00fff055;
  transition: transform 0.13s, box-shadow .15s;
  box-shadow: 0 0 7px #00fff044;
  cursor: pointer;
}
.flag:hover { transform: scale(1.14);}
.hero {
  position: relative;
  z-index: 2;
  min-height: 85vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  margin-top: 4rem;
}
.hero-content {
  max-width: 700px;
  margin: auto;
}
.neon-gradient {
  font-size: 3rem;
  font-weight: 900;
  background: linear-gradient(90deg, #00fff0 0%, #7928ca 90%);
  color: transparent;
  -webkit-background-clip: text;
  background-clip: text;
  filter: drop-shadow(0 2px 28px #7928ca44);
  margin-bottom: 2.2rem;
}
.desc {
  font-size: 1.27rem;
  color: #e8e8ee;
  margin-bottom: 2.5rem;
}
.cta-btn {
  font-size: 1.16rem;
  padding: 1.1rem 2.8rem;
  border-radius: 38px;
  background: #181a26;
  border: 2px solid #00fff0;
  color: #00fff0;
  font-weight: 700;
  letter-spacing: 1px;
  box-shadow: 0 0 30px #00fff055, 0 0 4px #7928ca33;
  text-decoration: none;
  transition: background .16s, color .14s, border .15s, filter .18s;
  margin-bottom: 1.5rem;
}
.cta-btn:hover {
  background: linear-gradient(90deg, #00fff0 0%, #7928ca 100%);
  color: #181a26;
  border: 2px solid #7928ca;
  box-shadow: 0 0 48px #7928ca88, 0 0 12px #00fff077;
  filter: brightness(1.18) blur(0.4px);
}
.about {
  background: transparent;
  z-index: 2;
  padding: 2.7rem 2vw 2.5rem 2vw;
  text-align: center;
}
.section-title {
  font-size: 2.1rem;
  margin-bottom: 1.1rem;
  font-weight: 900;
  background: linear-gradient(90deg, #00fff0 0%, #7928ca 100%);
  color: transparent;
  -webkit-background-clip: text;
  background-clip: text;
  filter: drop-shadow(0 0 16px #00fff055);
}
.about-desc {
  max-width: 700px;
  margin: 0 auto 2.3rem auto;
  color: #d1cbe8;
  font-size: 1.16rem;
}
.services-row {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  margin-top: 1.2rem;
  flex-wrap: wrap;
}
.service-card {
  background: rgba(34,37,54,0.88);
  border-radius: 22px;
  box-shadow: 0 0 28px #00fff055, 0 0 9px #7928ca44;
  padding: 2rem 1.3rem;
  min-width: 180px;
  max-width: 260px;
  margin: 1rem 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  border: 1.5px solid #00fff088;
  transition: transform .18s, box-shadow .16s, border-color .18s;
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: "";
  position: absolute;
  width: 140px; height: 140px;
  top: -40px; left: -40px;
  background: radial-gradient(circle, #00fff044 30%, transparent 80%);
  filter: blur(18px);
  z-index: 0;
  opacity: 0.55;
  pointer-events: none;
}
.service-card:hover {
  transform: translateY(-9px) scale(1.07);
  box-shadow: 0 0 56px #7928ca77, 0 0 16px #00fff099;
  border-color: #7928ca99;
}
.service-card img {
  width: 60px;
  margin-bottom: 1rem;
  filter: drop-shadow(0 2px 24px #00fff099);
  z-index: 1;
}
.service-card h3 {
  color: #fff;
  margin-top: 0.5rem;
  font-size: 1.13rem;
  letter-spacing: 1px;
  font-weight: 600;
  z-index: 1;
}
footer {
  background: transparent;
  color: #999;
  text-align: center;
  padding: 2.3rem 0 1.3rem 0;
  font-size: 1.07rem;
}
@media (max-width: 900px) {
  .main-nav { flex-direction: column; gap: 1.5rem; padding: 2rem 2vw 1rem 2vw;}
  ul { flex-direction: column; gap: 1.1rem; }
  .services-row { flex-direction: column; gap: 1.2rem; }
}
@media (max-width: 600px) {
  .hero-content { max-width: 99vw;}
  .neon-gradient { font-size: 2rem; }
  .about-desc { font-size: 0.97rem;}
}