:root{
  --bg: #1c2433;             /* daha açık gri-lacivert */
  --card: rgba(255,255,255,.08);
  --glass: rgba(255,255,255,.14);
  --text: #f0f3f7;
  --muted:#b3bbc7;
  --accent:#7aa2ff;
  --accent-2:#d87aff;
  --danger:#ff6b6b;
  --success:#3ecf8e;
  --shadow: 0 8px 22px rgba(0,0,0,.25);
  --radius: 16px;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: "Inter",system-ui,-apple-system,"Segoe UI",Roboto,Ubuntu,"Helvetica Neue",Arial;
  color: var(--text);
  background:
    radial-gradient(1200px 800px at 10% -10%, #2a3754 0%, transparent 60%),
    radial-gradient(1000px 600px at 110% 10%, #432a57 0%, transparent 60%),
    linear-gradient(180deg, var(--bg), var(--bg) 60%);
}

/* Layout */
.container{
  width:min(1100px, 92%);
  margin-inline:auto;
}

.site-header{
  position:sticky; top:0; z-index:10;
  backdrop-filter: blur(10px);
  background: linear-gradient(180deg, rgba(28,36,51,.85), rgba(28,36,51,.35));
  border-bottom:1px solid rgba(255,255,255,.08);
}
.header-grid{
  display:flex; align-items:center; justify-content:space-between;
  padding: 14px 0;
}
.brand{ display:flex; gap:.6rem; align-items:center; text-decoration:none; color:var(--text); font-weight:800; letter-spacing:.2px; }
.brand-logo{ font-size:1.4rem; }
.brand-text{ font-size:1.05rem; }

.nav{ display:flex; gap:.6rem; }
.nav-link{
  color:var(--muted); text-decoration:none; padding:.5rem .8rem; border-radius:10px;
}
.nav-link:hover{ background: var(--glass); color: var(--text); }
.nav-link.active{ background: var(--accent); color: #0b0f1a; }

.site-main{ padding: 36px 0 64px; }

.site-footer{
  margin-top: 48px;
  border-top:1px solid rgba(255,255,255,.08);
  background: rgba(0,0,0,.15);
}
.footer-grid{
  display:flex; justify-content:space-between; gap:2rem; padding: 20px 0;
}
.footer-links a{ color:var(--muted); text-decoration:none; margin-right:1rem; }
.footer-links a:hover{ color: var(--text); }
.copy{ text-align:center; color:var(--muted); padding: 6px 0 18px; font-size:.9rem; }

/* Hero */
.hero{
  position:relative; overflow:hidden;
  border:1px solid rgba(255,255,255,.08);
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.hero-inner{ padding: clamp(40px, 6vw, 90px) 24px; text-align:center; }
.hero-badge{
  display:inline-block; padding: .35rem .7rem; border-radius:999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color:#0b0f1a; font-weight:700; font-size:.9rem; letter-spacing:.2px;
  margin-bottom: 14px;
}
.hero h1{ font-size: clamp(28px, 4.5vw, 52px); margin:0 0 10px; }
.lead{ color: var(--muted); font-size: clamp(16px, 2.2vw, 18px); margin:0 auto; max-width: 800px; }

.cta-group{ display:flex; gap:.8rem; justify-content:center; margin-top:18px; flex-wrap:wrap; }
.btn{
  border-radius: 12px; padding:.75rem 1.1rem; text-decoration:none; border:1px solid transparent;
  font-weight:700; letter-spacing:.2px; cursor:pointer; display:inline-block;
}
.btn.primary{ background: var(--accent); color:#0b0f1a; }
.btn.ghost{ background: transparent; color: var(--text); border-color: rgba(255,255,255,.18); }
.btn:hover{ transform: translateY(-1px); }

/* Shapes */
.bg-shapes .shape{
  position:absolute; filter: blur(40px); opacity:.5; border-radius: 50%;
  animation: float 12s ease-in-out infinite;
}
.s1{ width:260px; height:260px; background:#7aa2ff55; top:-40px; left:-40px; }
.s2{ width:320px; height:320px; background:#d87aff44; right:-60px; top:20px; animation-delay:2s; }
.s3{ width:200px; height:200px; background:#00d4ff33; bottom:-40px; left:30%; animation-delay:4s; }

@keyframes float{
  0%,100%{ transform: translateY(0) }
  50%{ transform: translateY(12px) }
}

/* Features */
.features{
  margin-top: 28px;
  display:grid; grid-template-columns: repeat(3, 1fr); gap:18px;
}
.feature{
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid rgba(255,255,255,.08);
  padding: 18px;
  box-shadow: var(--shadow);
}
.feature h3{ margin: 6px 0 8px; }
.feature p{ color: var(--muted); margin:0; }

/* Pages */
.page h1{ font-size: 2rem; margin-bottom:.4rem; }
.page p{ color: var(--muted); }

/* Forms & Alerts */
.contact-form{ margin-top: 10px; max-width: 680px; }
.form-row{ display:flex; flex-direction:column; gap:.45rem; margin-bottom: .9rem; }
input, textarea{
  border-radius: 12px; background: rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16); color: var(--text);
  padding:.8rem 1rem; outline:none;
}
input::placeholder, textarea::placeholder{ color:#9da9b6; }
input:focus, textarea:focus{ border-color: var(--accent); box-shadow: 0 0 0 4px rgba(122,162,255,.15); }

.alert{
  padding:.7rem 1rem; border-radius: 12px; margin: 10px 0; font-weight:600;
}
.alert.success{ background:#1f4635; color:#9ef0c1; border:1px solid #2f8f6b; }
.alert.error{ background:#4a2626; color:#ffc9c9; border:1px solid #b85c5c; }

.muted{ color: var(--muted); font-size:.95rem; }

/* Responsive */
@media (max-width: 900px){
  .features{ grid-template-columns: 1fr; }
  .footer-grid{ flex-direction:column; align-items:flex-start; }
}