:root{
  --bg:#0b0f14;
  --text:#e9eef6;
  --muted:rgba(233,238,246,.72);
  --line:rgba(233,238,246,.10);
  --accent:#7aa7ff;
  --radius:18px;
  --shadow: 0 18px 45px rgba(0,0,0,.45);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  background:
    radial-gradient(900px 600px at 80% 10%, rgba(122,167,255,.15), transparent 55%),
    radial-gradient(900px 600px at 10% 30%, rgba(255,255,255,.05), transparent 60%),
    var(--bg);
  color:var(--text);
  line-height:1.5;
}

a{color:inherit; text-decoration:none}
.container{max-width:1120px; margin:0 auto; padding:0 20px}

.topbar{
  position:sticky; top:0; z-index:50;
  backdrop-filter: blur(14px);
  background: rgba(11,15,20,.72);
  border-bottom:1px solid var(--line);
}
.topbar-inner{
  display:flex; align-items:center; justify-content:space-between;
  gap:16px; padding:14px 0;
}

.brand{display:flex; align-items:center; gap:12px; min-width:240px}
.brand-mark{
  width:34px; height:34px; border-radius:10px;
  background: linear-gradient(135deg, rgba(122,167,255,.9), rgba(122,167,255,.12));
  border:1px solid rgba(122,167,255,.25);
  box-shadow: 0 12px 30px rgba(122,167,255,.15);
}
.brand-name{font-weight:600; letter-spacing:.2px}
.brand-tag{font-size:12px; color:var(--muted); margin-top:1px}

.nav{display:flex; gap:18px; align-items:center}
.nav a{font-size:14px; color:var(--muted)}
.nav a:hover{color:var(--text)}

.top-actions{display:flex; gap:10px; align-items:center}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:10px 14px; border-radius:999px;
  font-size:14px; font-weight:500;
  border:1px solid var(--line);
  transition: transform .12s ease, background .12s ease, border-color .12s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-primary{
  background: rgba(122,167,255,.20);
  border-color: rgba(122,167,255,.35);
}
.btn-primary:hover{background: rgba(122,167,255,.26); border-color: rgba(122,167,255,.50)}
.btn-ghost{background: rgba(255,255,255,.04)}
.btn-ghost:hover{background: rgba(255,255,255,.07)}

.btn-icon{gap:10px}
.ico{width:18px; height:18px; display:inline-flex; align-items:center; justify-content:center}
.ico svg{width:18px; height:18px; display:block}

.menu-btn{
  display:none;
  border:1px solid var(--line);
  background: rgba(255,255,255,.04);
  color:var(--text);
  border-radius:12px;
  padding:10px 12px;
  font-size:16px;
}

.mobile-nav{
  border-top:1px solid var(--line);
  padding:12px 20px 18px;
  display:flex; flex-direction:column; gap:10px;
}
.mobile-nav a{color:var(--muted)}
.mobile-nav a:hover{color:var(--text)}
.mobile-actions{display:flex; gap:10px; margin-top:6px; flex-wrap:wrap}

.hero{padding:72px 0 40px}
.hero-inner{
  display:grid;
  grid-template-columns: 1.15fr .85fr;
  gap:28px;
  align-items:stretch;
}
.hero-title{margin:0; font-size:56px; letter-spacing:-1px; line-height:1.04}
.hero-subtitle{margin:14px 0 0; font-size:16px; color:var(--muted); max-width:52ch}

.hero-cta{
  margin-top:22px;
  padding:16px;
  border-radius: var(--radius);
  border:1px solid var(--line);
  background: rgba(255,255,255,.03);
}
.hero-line{margin:0; font-size:15px; color: rgba(233,238,246,.86)}
.cta-row{display:flex; gap:10px; margin-top:12px; flex-wrap:wrap}

.hero-notes{display:flex; gap:10px; margin-top:18px; flex-wrap:wrap}
.note{
  font-size:12px; color:var(--muted);
  padding:8px 10px; border-radius:999px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.02);
}

.hero-visual{
  position:relative;
  border-radius: var(--radius);
  border:1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
  box-shadow: var(--shadow);
  overflow:hidden;
  min-height: 320px;
}
.visual-card{position:relative; padding:18px; z-index:2}
.visual-title{font-weight:600; font-size:14px; color: rgba(233,238,246,.92)}
.visual-list{margin-top:12px; display:grid; gap:10px}
.visual-item{display:flex; align-items:center; gap:10px; color:var(--muted); font-size:13px}
.dot{width:8px; height:8px; border-radius:999px; background: rgba(122,167,255,.85); box-shadow: 0 10px 24px rgba(122,167,255,.22)}
.visual-glow{
  position:absolute; inset:-40%;
  background: radial-gradient(circle at 60% 30%, rgba(122,167,255,.26), transparent 55%);
  z-index:1;
}

.section{padding:48px 0}
.section-head{display:flex; align-items:flex-end; justify-content:space-between; gap:18px; margin-bottom:18px}
.section-head h2{margin:0; font-size:22px; letter-spacing:-.2px}
.section-head p{margin:0; color:var(--muted); max-width:65ch; font-size:14px}

.grid{display:grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap:14px}
.grid-3{grid-template-columns: repeat(3, minmax(0,1fr));}
.card{
  border:1px solid var(--line);
  background: rgba(255,255,255,.03);
  border-radius: var(--radius);
  padding:18px;
}
.card h3{margin:0 0 10px; font-size:16px}
.card ul{margin:0; padding-left:18px; color:var(--muted); font-size:14px}
.card li{margin:6px 0}
.card .icon img{width:34px; height:34px; opacity:.9}
.card-foot{margin-top:12px; font-size:12px; color:var(--muted)}

.divider{height:1px; background:var(--line); margin:22px 0}

.callout{
  display:flex; align-items:center; justify-content:space-between; gap:14px;
  border:1px solid rgba(122,167,255,.22);
  background: rgba(122,167,255,.10);
  border-radius: var(--radius);
  padding:16px;
}
.callout-title{font-weight:600}
.callout-text{color: rgba(233,238,246,.85); font-size:14px}

.contact-grid{display:grid; grid-template-columns: 1fr 1fr; gap:14px}
.contact-actions{display:flex; gap:10px; margin-top:14px; flex-wrap:wrap}
.muted{color:var(--muted)}

.footer{
  margin-top:28px;
  padding:18px 0;
  border-top:1px solid var(--line);
  color:var(--muted);
  display:flex; justify-content:space-between; gap:14px; flex-wrap:wrap;
  font-size:12px;
}

/* Gallery */
.gallery-grid{display:grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap:14px}
.gallery-card{
  margin:0;
  border-radius: var(--radius);
  border:1px solid var(--line);
  background: rgba(255,255,255,.03);
  overflow:hidden;
  box-shadow: var(--shadow);
}
.gallery-card img{
  width:100%;
  height: 320px;
  object-fit: cover;
  display:block;
  transform: scale(1.01);
}

@media (max-width: 980px){
  .hero-inner{grid-template-columns: 1fr;}
  .hero-title{font-size:44px}
  .hero-visual{min-height: 240px}
  .grid{grid-template-columns: 1fr}
  .grid-3{grid-template-columns: 1fr}
  .contact-grid{grid-template-columns: 1fr}
  .gallery-grid{grid-template-columns: 1fr}
  .gallery-card img{height: 260px;}
  .nav,.top-actions{display:none}
  .menu-btn{display:inline-flex}
}


/* WhatsApp (green) */
.btn-wa{
  background: rgba(37, 211, 102, .18);
  border-color: rgba(37, 211, 102, .40);
}
.btn-wa:hover{
  background: rgba(37, 211, 102, .24);
  border-color: rgba(37, 211, 102, .55);
}


/* Hero visual background (Uygulama Disiplini) */
.hero-visual::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("assets/disiplin-bg.jpeg");
  background-size:cover;
  background-position:center;
  filter: grayscale(1) blur(1.5px) brightness(1.28) contrast(1.06);
  opacity:.28;
  transform: scale(1.05);
  z-index:0;
}


/* Hero visual badge */
.visual-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 10px;
  border-radius:999px;
  border:1px solid rgba(233,238,246,.16);
  background: rgba(11,15,20,.55);
  color: rgba(233,238,246,.82);
  font-size:12px;
  margin-bottom:10px;
  width: fit-content;
}


/* Son kontrol noktası */
.check-grid{
  margin-top:10px;
  display:grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap:10px 14px;
}
.check-item{
  display:flex; align-items:center; gap:10px;
  padding:12px 14px;
  border:1px solid rgba(11,15,20,.10);
  background: rgba(255,255,255,.78);
  border-radius: 16px;
  color: rgba(11,15,20,.72);
  font-size:14px;
}
.check-dot{
  width:8px; height:8px; border-radius:999px;
  background: rgba(31,111,235,.85);
  flex:0 0 auto;
}
.gallery{
  margin-top:14px;
  display:grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap:12px;
}
.g-item{
  padding:0;
  border:1px solid rgba(11,15,20,.10);
  border-radius: 18px;
  overflow:hidden;
  background: rgba(255,255,255,.8);
  cursor:pointer;
}
.g-item img{
  width:100%;
  height:220px;
  object-fit:cover;
  display:block;
  filter: grayscale(.05) contrast(1.05) brightness(1.02);
}
@media (max-width: 980px){
  .check-grid{grid-template-columns: 1fr;}
  .gallery{grid-template-columns: 1fr;}
  .g-item img{height:240px;}
}

/* Modal */
.modal{position:fixed; inset:0; z-index:80;}
.modal-backdrop{position:absolute; inset:0; background: rgba(11,15,20,.55);}
.modal-inner{
  position:relative;
  margin: 6vh auto;
  max-width: min(980px, 92vw);
  border-radius: 18px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.18);
  box-shadow: 0 30px 70px rgba(0,0,0,.30);
  background:#0b0f14;
}
.modal-inner img{width:100%; height:auto; display:block;}
.modal-close{
  position:absolute;
  top:10px; right:10px;
  width:38px; height:38px;
  border-radius: 12px;
  border:1px solid rgba(255,255,255,.22);
  background: rgba(255,255,255,.10);
  color: #fff;
  font-size:22px;
  cursor:pointer;
}


/* ===== Landing page helpers ===== */
.bullet { padding-left: 18px; }
.bullet li { margin: 8px 0; }
.faq-item { border-top: 1px solid rgba(255,255,255,.10); padding: 10px 0; }
.faq-item:first-child { border-top: 0; }
.faq-item summary { cursor: pointer; font-weight: 600; }
.faq-body { margin-top: 8px; color: rgba(255,255,255,.80); }
/* ================================= */