/* Ahmet Caglayan Consulting — multi-page static site */
:root{
  --bg:#0b1220;
  --card:#0f1a33;
  --ink:#eaf0ff;
  --muted:#a8b3d6;
  --brand:#2d6cdf;
  --brand2:#00d4ff;
  --accent:#ffcc66;
  --surface:#0b1220;
  --paper:#0d1730;
  --border:rgba(255,255,255,.12);
  --shadow: 0 14px 40px rgba(0,0,0,.35);
  --radius:18px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  background: radial-gradient(1200px 700px at 15% 5%, rgba(45,108,223,.22), transparent 55%),
              radial-gradient(900px 600px at 85% 0%, rgba(0,212,255,.14), transparent 55%),
              radial-gradient(900px 700px at 50% 120%, rgba(255,204,102,.08), transparent 55%),
              var(--bg);
  color:var(--ink);
  line-height:1.55;
}

a{color:inherit}
.container{max-width:1120px;margin:0 auto;padding:0 20px}

/* Header + nav */
.site-header{
  position:sticky; top:0; z-index:50;
  backdrop-filter: blur(12px);
  background: rgba(11,18,32,.55);
  border-bottom: 1px solid var(--border);
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 0;
}
.brand{
  display:flex; align-items:center; gap:12px;
  text-decoration:none;
}
.logo{
  width:38px;height:38px;border-radius:12px;
  background: linear-gradient(135deg,var(--brand),var(--brand2));
  box-shadow: 0 10px 30px rgba(45,108,223,.35);
}
.brand .title{font-weight:750; letter-spacing:.2px}
.brand .subtitle{color:var(--muted); font-size:12px; margin-top:1px}

.nav-links{display:flex; gap:18px; align-items:center}
.nav-links a{
  text-decoration:none;
  color:var(--muted);
  font-weight:600;
  padding:8px 10px;
  border-radius:12px;
  transition: .2s ease;
}
.nav-links a:hover{color:var(--ink); background: rgba(255,255,255,.05)}
.nav-links a.active{color:var(--ink); background: rgba(45,108,223,.18); border:1px solid rgba(45,108,223,.25)}

.mobile-toggle{display:none; background:transparent; border:1px solid var(--border); color:var(--ink); padding:8px 10px; border-radius:12px}

/* Hero */
.hero{
  padding:72px 0 34px;
}
.hero-grid{
  display:grid; grid-template-columns: 1.25fr .75fr; gap:22px;
  align-items:stretch;
}
.kicker{
  display:inline-flex; gap:10px; align-items:center;
  padding:8px 12px; border-radius:999px;
  border: 1px solid rgba(45,108,223,.35);
  background: rgba(45,108,223,.12);
  color: var(--ink);
  font-weight:700;
  font-size:12px;
  letter-spacing:.3px;
  text-transform:uppercase;
}
.kicker .dot{width:8px;height:8px;border-radius:999px;background:var(--accent)}

h1{font-size:46px; line-height:1.08; margin:14px 0 12px; letter-spacing:-.6px}
.lead{color:var(--muted); font-size:18px; margin:0 0 18px}

.cta-row{display:flex; gap:12px; flex-wrap:wrap; margin-top:16px}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  gap:10px;
  padding:12px 16px;
  border-radius:14px;
  text-decoration:none;
  font-weight:750;
  border:1px solid var(--border);
  background: rgba(255,255,255,.04);
}
.btn.primary{
  background: linear-gradient(135deg,var(--brand),var(--brand2));
  border: 1px solid rgba(255,255,255,.22);
  color:#061022;
}
.btn.primary:hover{filter:brightness(1.05)}
.btn:hover{background: rgba(255,255,255,.06)}

.hero-card{
  border-radius: var(--radius);
  border:1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  box-shadow: var(--shadow);
  padding:18px;
}
.hero-card h3{margin:0 0 8px; font-size:14px; color:var(--muted); text-transform:uppercase; letter-spacing:.25px}
.metric{display:flex; align-items:baseline; justify-content:space-between; padding:10px 0; border-top:1px dashed rgba(255,255,255,.13)}
.metric:first-of-type{border-top:none}
.metric .value{font-size:20px; font-weight:850}
.metric .label{color:var(--muted); font-weight:650}

/* Sections */
.section{padding:34px 0}
.section h2{font-size:26px; margin:0 0 10px}
.section p{color:var(--muted); margin:0 0 16px}

.grid{
  display:grid; gap:16px;
  grid-template-columns: repeat(12, 1fr);
}
.card{
  grid-column: span 4;
  border-radius: var(--radius);
  border:1px solid var(--border);
  background: rgba(255,255,255,.04);
  padding:18px;
}
.card h3{margin:0 0 8px; font-size:16px}
.card p{margin:0; color:var(--muted)}
.card ul{margin:10px 0 0 18px; color:var(--muted)}

.banner{
  border-radius: var(--radius);
  border:1px solid rgba(45,108,223,.35);
  background: radial-gradient(800px 200px at 0% 0%, rgba(45,108,223,.18), transparent 55%),
              rgba(45,108,223,.07);
  padding:18px;
}
.banner strong{color:var(--ink)}

.split{
  display:grid; grid-template-columns: 1fr 1fr; gap:18px;
}

/* Case study list */
.list{display:grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap:16px}
.case{
  border-radius: var(--radius);
  border:1px solid var(--border);
  background: rgba(255,255,255,.04);
  padding:18px;
}
.case .tag{display:inline-block; font-size:12px; color:var(--muted); border:1px solid rgba(255,255,255,.14); padding:6px 10px; border-radius:999px}
.case h3{margin:10px 0 6px}
.case p{margin:0; color:var(--muted)}
.case .meta{margin-top:12px; display:flex; gap:10px; flex-wrap:wrap}
.pill{font-size:12px; padding:6px 10px; border-radius:999px; background: rgba(0,212,255,.08); border:1px solid rgba(0,212,255,.2); color:var(--ink)}

/* Gallery */
.gallery{display:grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap:14px}
.photo{
  border-radius: 16px;
  border:1px solid var(--border);
  background: rgba(255,255,255,.03);
  overflow:hidden;
}
.photo .ph{
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, rgba(45,108,223,.25), rgba(0,212,255,.16));
  display:flex; align-items:center; justify-content:center;
  color: rgba(255,255,255,.75);
  font-weight:750;
  letter-spacing:.3px;
}
.photo img{width:100%; height:auto; display:block}
.photo .cap{padding:12px}
.photo .cap strong{display:block; margin-bottom:4px}
.photo .cap span{color:var(--muted); font-size:13px}

/* Forms */
.form{display:grid; gap:12px; max-width:680px}
.field{display:grid; gap:6px}
label{font-weight:650}
input,textarea{
  width:100%;
  padding:12px 12px;
  border-radius:14px;
  border:1px solid var(--border);
  background: rgba(255,255,255,.03);
  color:var(--ink);
  outline:none;
}
textarea{min-height:120px; resize:vertical}

.small{font-size:13px; color:var(--muted)}

/* Footer */
.footer{padding:26px 0 42px; border-top:1px solid var(--border); color:var(--muted)}
.footer .row{display:flex; gap:16px; justify-content:space-between; flex-wrap:wrap}
.footer a{color:var(--muted)}
.footer a:hover{color:var(--ink)}

/* Responsive */
@media (max-width: 860px){
  .hero-grid{grid-template-columns: 1fr;}
  h1{font-size:40px}
  .card{grid-column: span 12;}
  .split{grid-template-columns: 1fr;}
  .nav-links{display:none}
  .mobile-toggle{display:inline-flex}
  .nav.open .nav-links{display:flex; flex-direction:column; position:absolute; left:20px; right:20px; top:64px; padding:12px; background: rgba(11,18,32,.92); border:1px solid var(--border); border-radius:16px}
}