:root{
  --bg: #0b1220;
  --panel: rgba(255,255,255,0.06);
  --panel2: rgba(255,255,255,0.10);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.70);
  --line: rgba(255,255,255,0.14);
  --accent: #78c878; /* doğal yeşil */
  --accent2: #67b7d1; /* ikinci vurgu */
  --shadow: 0 18px 45px rgba(0,0,0,0.35);
  --radius: 18px;
  --max: 1120px;
}

*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }
body{
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 700px at 25% 10%, rgba(120,200,120,0.14), transparent 60%),
              radial-gradient(900px 600px at 80% 20%, rgba(103,183,209,0.12), transparent 55%),
              var(--bg);
  color: var(--text);
  line-height:1.55;
}

a{ color:inherit; text-decoration:none; }
a:hover{ opacity:0.92; }

.container{
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.topbar{
  background: rgba(0,0,0,0.28);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding: 10px 0;
  font-size: 14px;
  color: var(--muted);
}
.topbar-left, .topbar-right{
  display:flex;
  gap:14px;
  align-items:center;
  flex-wrap:wrap;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
}
.badge strong{ color: var(--text); font-weight:600; }

.header{
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(11,18,32,0.72);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 14px 0;
  gap: 14px;
}
.brand{
  display:flex;
  align-items:center;
  gap: 12px;
  min-width: 170px;
}
.logo{
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background:
    radial-gradient(circle at 30% 30%, rgba(120,200,120,0.9), rgba(120,200,120,0.25) 55%, transparent 70%),
    radial-gradient(circle at 70% 70%, rgba(103,183,209,0.9), rgba(103,183,209,0.25) 55%, transparent 70%),
    rgba(255,255,255,0.06);
  border: 1px solid var(--line);
  box-shadow: 0 10px 25px rgba(0,0,0,0.22);
}
.brand-title{
  display:flex;
  flex-direction:column;
  line-height:1.1;
}
.brand-title .name{
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.2px;
}
.brand-title .tag{
  font-size: 12px;
  color: var(--muted);
}

.nav{
  display:flex;
  align-items:center;
  gap: 18px;
}
.nav a{
  color: var(--muted);
  font-weight: 600;
  font-size: 14px;
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid transparent;
}
.nav a.active,
.nav a:hover{
  color: var(--text);
  background: rgba(255,255,255,0.05);
  border-color: var(--line);
}

.header-actions{
  display:flex;
  align-items:center;
  gap: 10px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  border-radius: 14px;
  padding: 10px 14px;
  font-weight: 700;
  font-size: 14px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.05);
  color: var(--text);
  cursor:pointer;
  transition: transform 0.08s ease, background 0.2s ease;
}
.btn:hover{ background: rgba(255,255,255,0.08); }
.btn:active{ transform: translateY(1px); }
.btn.primary{
  border-color: rgba(120,200,120,0.45);
  background: linear-gradient(135deg, rgba(120,200,120,0.22), rgba(103,183,209,0.18));
}
.btn.ghost{
  background: transparent;
}
.mobile-toggle{
  display:none;
}

.hero{
  position:relative;
  overflow:hidden;
  border-bottom: 1px solid var(--line);
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(180deg, rgba(11,18,32,0.25), rgba(11,18,32,0.92) 72%),
    url("../img/hero.jpg");
  background-size: cover;
  background-position: center;
  filter: saturate(1.05) contrast(1.02);
}
.hero::after{
  content:"";
  position:absolute;
  inset:-2px;
  background: radial-gradient(900px 520px at 20% 20%, rgba(120,200,120,0.20), transparent 60%),
              radial-gradient(700px 460px at 70% 10%, rgba(103,183,209,0.18), transparent 55%);
  pointer-events:none;
}
.hero-inner{
  position:relative;
  padding: 64px 0 48px;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 26px;
  align-items: center;
}
.hero h1{
  font-size: 44px;
  line-height: 1.1;
  margin: 0 0 12px;
  letter-spacing: -0.4px;
}
.hero p{
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 16px;
  max-width: 58ch;
}
.hero-cards{
  display:grid;
  gap: 12px;
}
.mini-card{
  background: rgba(0,0,0,0.28);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow);
}
.mini-card .t{
  font-weight: 800;
  margin-bottom: 6px;
}
.mini-card .d{
  color: var(--muted);
  font-size: 13px;
}

.section{
  padding: 46px 0;
}
.section-title{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap: 12px;
  margin-bottom: 18px;
}
.section-title h2{
  margin:0;
  font-size: 24px;
  letter-spacing: -0.2px;
}
.section-title p{
  margin:0;
  color: var(--muted);
  font-size: 14px;
}

.grid{
  display:grid;
  gap: 14px;
}
.grid.cols-4{ grid-template-columns: repeat(4, 1fr); }
.grid.cols-2{ grid-template-columns: repeat(2, 1fr); }

.card{
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: 0 12px 30px rgba(0,0,0,0.24);
  transition: transform .12s ease, background .2s ease;
}
.card:hover{
  transform: translateY(-2px);
  background: rgba(255,255,255,0.07);
}
.card .icon{
  width: 46px;
  height: 46px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(120,200,120,0.22), rgba(103,183,209,0.18));
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight: 900;
}
.card h3{
  margin: 12px 0 6px;
  font-size: 16px;
}
.card p{
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}
.card .link{
  margin-top: 12px;
  display:inline-flex;
  align-items:center;
  gap: 8px;
  color: rgba(120,200,120,0.92);
  font-weight: 800;
  font-size: 13px;
}

.page-hero{
  padding: 26px 0 18px;
}
.page-hero h1{
  margin:0 0 8px;
  font-size: 30px;
}
.page-hero p{
  margin:0;
  color: var(--muted);
  max-width: 80ch;
}

.panel{
  background: rgba(0,0,0,0.22);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}

.form{
  display:grid;
  gap: 12px;
}
.field label{
  display:block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 6px;
  font-weight: 700;
}
.field input, .field textarea{
  width:100%;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.05);
  color: var(--text);
  outline:none;
}
.field textarea{ min-height: 120px; resize: vertical; }

.footer{
  border-top: 1px solid var(--line);
  padding: 20px 0;
  color: var(--muted);
  font-size: 13px;
}
.footer-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
  flex-wrap:wrap;
}

hr.sep{
  border:0;
  border-top: 1px solid var(--line);
  margin: 22px 0;
}

/* Responsive */
@media (max-width: 980px){
  .hero-grid{ grid-template-columns: 1fr; }
  .grid.cols-4{ grid-template-columns: repeat(2, 1fr); }
  .nav{
    display:none;
    position:absolute;
    left:0;
    right:0;
    top: 68px;
    background: rgba(11,18,32,0.94);
    border-bottom: 1px solid var(--line);
    padding: 10px 0;
  }
  .nav.open{ display:flex; flex-direction:column; align-items:stretch; gap: 6px; }
  .nav a{ margin: 0 10px; }
  .mobile-toggle{ display:inline-flex; }
}
@media (max-width: 520px){
  .grid.cols-4{ grid-template-columns: 1fr; }
  .hero h1{ font-size: 34px; }
}