:root{
  --primary:#1d4ed8;
  --dark:#0f172a;
  --muted:#64748b;
  --bg:#f8fafc;
  --card:#ffffff;
  --radius:18px;
  --shadow:0 10px 30px rgba(2,6,23,.08);
}

*{
  box-sizing:border-box;
  margin:0;
  padding:0;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,'Helvetica Neue',Arial;
}

body{
  background:var(--bg);
  color:var(--dark);
  line-height:1.65;
}

a{text-decoration:none;color:inherit}
.container{max-width:1100px;margin:0 auto;padding:0 20px}

/* ===== NAV ===== */
nav{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(248,250,252,.85);
  backdrop-filter: blur(10px);
  border-bottom:1px solid rgba(100,116,139,.15);
}

.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:16px 0;
  position:relative;
}

.logo{font-weight:800;letter-spacing:.4px}
.logo span{color:var(--primary)}

.nav-links{
  display:flex;
  gap:18px;
  align-items:center;
}

.nav-links a{
  font-weight:600;
  color:var(--muted);
}

.nav-links a:hover{color:var(--dark)}

/* ===== BUTTONS ===== */
.btn{
  padding:10px 14px;
  border-radius:12px;
  font-weight:700;
  background:var(--primary);
  color:#fff;
  display:inline-flex;
  gap:8px;
  align-items:center;
  justify-content:center;
  box-shadow:0 10px 25px rgba(29,78,216,.25);
  transition:.2s;
  width:auto; /* ✅ default auto */
}

.btn.secondary{
  background:#fff;
  color:var(--primary);
  border:1px solid rgba(29,78,216,.25);
  box-shadow:none;
}

.btn:hover{transform: translateY(-1px)}

/* ===== HEADER / HERO ===== */
header{
  padding:60px 0 35px;
  background:
    radial-gradient(1200px 500px at 10% 10%, rgba(29,78,216,.15), transparent 65%),
    radial-gradient(1200px 500px at 90% 10%, rgba(16,185,129,.12), transparent 60%);
}

.hero{
  display:grid;
  grid-template-columns:1.2fr .8fr;
  gap:34px;
  align-items:center;
}

.badge{
  display:inline-flex;
  gap:10px;
  align-items:center;
  padding:8px 14px;
  border-radius:999px;
  background:#fff;
  border:1px solid rgba(100,116,139,.18);
  color:var(--muted);
  font-weight:700;
  box-shadow:var(--shadow);
}

.hero h1{
  font-size:40px;
  line-height:1.12;
  margin:18px 0 12px;
}

.hero p{
  color:var(--muted);
  font-size:18px;
  margin-bottom:22px;
}

.hero-actions{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
}

.hero-card{
  background:var(--card);
  border-radius:var(--radius);
  padding:22px;
  box-shadow:var(--shadow);
  border:1px solid rgba(100,116,139,.12);
}

.hero-card h2{font-size:18px;margin-bottom:10px}
.hero-card ul{padding-left:18px;color:var(--muted)}
.hero-card li{margin:7px 0}

/* ===== SECTIONS ===== */
section{padding:55px 0}

.section-title{
  text-align:center;
  margin-bottom:24px;
}

.section-title h2{
  font-size:30px;
  margin-bottom:10px;
}

.section-title p{
  color:var(--muted);
  max-width:760px;
  margin:0 auto;
}

/* ===== GRID / CARDS ===== */
.grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
}

.card{
  background:var(--card);
  border-radius:var(--radius);
  padding:20px;
  box-shadow:var(--shadow);
  border:1px solid rgba(100,116,139,.12);
}

.card h3{font-size:18px;margin-bottom:10px}
.card p{color:var(--muted)}

/* ===== CONTENT BOX ===== */
.content{
  background:#fff;
  border-radius:var(--radius);
  padding:26px;
  border:1px solid rgba(100,116,139,.12);
  box-shadow:var(--shadow);
}

.content h2{margin:20px 0 10px;font-size:22px}
.content h3{margin:18px 0 8px;font-size:18px}
.content p{color:var(--muted);margin:10px 0}
.content ul{padding-left:18px;color:var(--muted)}
.content li{margin:8px 0}

/* ===== RELATED LINKS ===== */
.related{margin-top:22px}
.related a{display:inline-block;margin:6px 10px 0 0}

/* ===== FAQ ===== */
.faq details{
  background:#fff;
  border-radius:14px;
  padding:14px 16px;
  margin:10px 0;
  border:1px solid rgba(100,116,139,.12);
}

.faq summary{
  cursor:pointer;
  font-weight:700;
}

.faq p{
  margin:10px 0;
  color:var(--muted);
}

/* ===== FOOTER ===== */
.footer{
  padding:22px 0;
  border-top:1px solid rgba(100,116,139,.15);
  color:var(--muted);
  text-align:center;
}

/* =======================================
   MOBILE HAMBURGER MENU
======================================= */
.hamburger{
  display:none;
  background:#fff;
  border:1px solid rgba(100,116,139,.18);
  border-radius:12px;
  padding:10px 12px;
  cursor:pointer;
  box-shadow:var(--shadow);
}

.hamburger .bar{
  width:22px;
  height:2px;
  background:var(--dark);
  display:block;
  margin:4px 0;
  border-radius:99px;
}

.mobile-menu{
  display:none;
  position:absolute;
  top:100%;
  left:0;
  right:0;
  background:rgba(248,250,252,.97);
  backdrop-filter: blur(12px);
  border-top:1px solid rgba(100,116,139,.15);
  border-bottom:1px solid rgba(100,116,139,.15);
  box-shadow:var(--shadow);
  padding:14px 16px;
  border-radius:0 0 16px 16px;
}

.mobile-menu a{
  display:block;
  padding:14px 12px;
  border-radius:12px;
  font-weight:700;
  color:var(--dark);
}

.mobile-menu a:hover{
  background:rgba(29,78,216,.08);
}

.mobile-menu .mobile-cta{
  margin-top:10px;
  display:grid;
  gap:10px;
}

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

/* =======================================
   RESPONSIVE BREAKPOINTS
======================================= */

/* Tablet */
@media(max-width: 900px){
  .hero{grid-template-columns:1fr}
  .grid{grid-template-columns:1fr 1fr}
  .hero h1{font-size:34px}
}

/* Mobile */
@media(max-width: 520px){
  .grid{grid-template-columns:1fr}

  /* ✅ Menü linklerini kesin kapat */
  .nav-links{display:none !important;}

  /* ✅ Hamburger görünür */
  .hamburger{
    display:inline-flex;
    flex-direction:column;
    justify-content:center;
  }

  /* ✅ NAV içinde butonlar genişlemesin */
  nav .btn{
    width:auto !important;
  }

  /* ✅ Hero butonları mobilde alt alta geniş dursun */
  .hero-actions .btn{
    width:100%;
  }

  /* ✅ Genel butonlar full genişlik olmasın */
  .btn{
    width:auto;
  }

  .hero h1{font-size:30px}
  .hero p{font-size:16px}
  .hero-actions{gap:10px}

  .nav-wrap{
    padding:12px 0;
  }

  .logo{
    font-size:18px;
  }
}