/* ——— Renk paleti: koyu lacivert arka plan, canlı vurgu ——— */
:root{
  --bg:#0b1220;        /* ana koyu lacivert */
  --bg-2:#0e172a;      /* bir ton açık */
  --card:#101a31;      /* kart arka planı */
  --text:#e9eef9;      /* metin */
  --muted:#a6b0c8;     /* ikincil metin */
  --border:#1c2742;    /* sınır çizgisi */
  --accent:#6ea8fe;    /* vurgu (buton) */
  --accent-2:#5dd49c;  /* ikincil vurgu */
  --shadow: 0 10px 30px rgba(0,0,0,.35);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Inter, Arial, sans-serif;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(110,168,254,.12), transparent 60%),
    radial-gradient(900px 500px at -10% 20%, rgba(93,212,156,.10), transparent 50%),
    var(--bg);
  color:var(--text);
}

/* ——— Basit konteyner ve genel bileşenler ——— */
.container{ max-width:1100px; margin:0 auto; padding:0 20px }
.section{ padding:64px 0 }
.section.alt{ background: linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%) }
h1,h2,h3{ line-height:1.2; margin:0 0 12px }
p{ margin:0 0 12px; color:var(--muted) }

.btn{
  display:inline-block; padding:12px 18px; border-radius:12px; border:1px solid var(--border);
  background:#122041; color:var(--text); text-decoration:none; font-weight:700; box-shadow:var(--shadow);
}
.btn.small{ padding:8px 12px; border-radius:10px }
.btn.primary{ background:var(--accent); color:#0b0b0b; border-color:transparent }
.btn.ghost{ background:transparent }

/* ——— Üst Navigasyon ——— */
.nav{
  position:sticky; top:0; z-index:50; display:flex; align-items:center; justify-content:space-between;
  gap:16px; padding:14px 20px; border-bottom:1px solid var(--border);
  background: rgba(10,15,28,.75); backdrop-filter: saturate(1.1) blur(8px);
}
.brand{ display:flex; align-items:center; gap:10px; color:var(--text); text-decoration:none; font-weight:900; letter-spacing:.3px }
.brand .logo{
  display:inline-grid; place-items:center; width:34px; height:34px; border-radius:9px;
  background:linear-gradient(135deg,var(--accent),#99c4ff);
  color:#0b0b0b; font-weight:900;
}
.navlinks{ display:flex; align-items:center; gap:14px }
.navlinks a{ color:var(--text); text-decoration:none; padding:8px 10px }
.navlinks a:hover{ color:#fff }

/* ——— HERO ——— */
.hero{
  position:relative; display:grid; place-items:center; min-height:64vh; padding:40px 0;
  background:
    radial-gradient(800px 400px at 15% 10%, rgba(110,168,254,.10), transparent 60%),
    radial-gradient(600px 300px at 90% 10%, rgba(93,212,156,.08), transparent 60%);
}
.hero-inner{ max-width:900px; text-align:center; padding:0 20px }
.hero .lead{ font-size:1.05rem }
.cta-row{ display:flex; gap:12px; justify-content:center; flex-wrap:wrap; margin:16px 0 10px }

.ticks{
  display:flex; gap:16px; padding:0; margin:10px auto 0; list-style:none; flex-wrap:wrap; justify-content:center; color:var(--muted);
}
.ticks li{ background:#0f1a33; border:1px solid var(--border); padding:8px 12px; border-radius:999px }
.accent{ color:#b5d1ff }

/* ——— Kartlar ——— */
.grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap:16px; margin-top:16px }
@media (max-width:980px){ .grid{ grid-template-columns: repeat(2, 1fr) } }
@media (max-width:640px){ .grid{ grid-template-columns: 1fr } }

.card{
  background:var(--card); border:1px solid var(--border); border-radius:16px; padding:16px; box-shadow:var(--shadow);
}
.card h3{ margin:0 0 8px }

/* ——— Demo ——— */
.demo{ display:flex; gap:10px; flex-wrap:wrap; margin:10px 0 16px }
.demo input{
  flex:1 1 360px; min-width:260px; padding:12px 14px; border-radius:12px; border:1px solid var(--border);
  background:#0f1a33; color:var(--text); outline:none;
}
.qrbox{
  display:grid; place-items:center; min-height:280px; border:1px dashed var(--border); border-radius:16px;
  background:#0c152b; margin-top:8px; padding:12px;
}
.qrbox canvas{ image-rendering:pixelated }

/* ——— FAQ ——— */
.faq{ background:#0f1a33; border:1px solid var(--border); border-radius:12px; padding:12px 14px; margin:8px 0 }
.faq summary{ cursor:pointer; font-weight:700 }
.faq p{ margin-top:8px }

/* ——— CTA bandı ——— */
.cta{ background: linear-gradient(90deg, #0e1730 0%, #102047 100%); padding:48px 0; border-top:1px solid var(--border); border-bottom:1px solid var(--border) }
.cta-inner{ display:flex; align-items:center; justify-content:space-between; gap:16px }
.cta-actions{ display:flex; gap:10px; flex-wrap:wrap }
@media (max-width:720px){ .cta-inner{ flex-direction:column; text-align:center } }

/* ——— Footer ——— */
.footer{ padding:30px 0 }
.footgrid{ display:flex; align-items:flex-start; justify-content:space-between; gap:16px }
.foot .logo{ width:28px; height:28px }
.footlinks{ display:flex; gap:14px; flex-wrap:wrap }
.footlinks a{ color:var(--muted); text-decoration:none }
.footlinks a:hover{ color:#fff }

/* ——— Yüzen WhatsApp butonu ——— */
.float-wh{
  position:fixed; right:18px; bottom:18px; width:54px; height:54px; border-radius:50%;
  display:grid; place-items:center; background:var(--accent-2); color:#0b0b0b; text-decoration:none; box-shadow:var(--shadow);
}

/* Küçük yardımcı sınıflar */
.small{ font-size:.95rem }