/* ============================================================
   Köklüce Yazılım ve Yapay Zekâ Danışmanlık — Kurumsal
   Tasarım sistemi: gece lacivert + sıcak altın · el yapımı his
   ============================================================ */
:root{
  --ink:#0d1526;         /* gece lacivert */
  --ink-2:#131e35;
  --ink-3:#1b2740;
  --paper:#f7f5ef;       /* fildişi kâğıt */
  --paper-2:#efece2;
  --line:#e4dfd2;
  --line-d:rgba(255,255,255,.10);
  --text:#1a2233;
  --muted:#5c6577;
  --muted-d:#a9b4c9;
  --gold:#b6893f;        /* sıcak altın */
  --gold-2:#caa25a;
  --gold-soft:#f0e6d2;
  --teal:#2f6d63;        /* ikincil (güven) */
  --shadow:0 24px 60px -28px rgba(13,21,38,.45);
  --shadow-s:0 10px 30px -18px rgba(13,21,38,.35);
  --r:16px; --r-s:11px;
  --wrap:1160px;
  --serif:'Newsreader',Georgia,'Times New Roman',serif;
  --sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--sans);color:var(--text);background:var(--paper);
  line-height:1.65;-webkit-font-smoothing:antialiased;font-size:17px;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.serif{font-family:var(--serif)}
h1,h2,h3,h4{font-family:var(--serif);font-weight:500;line-height:1.12;letter-spacing:-.01em;color:var(--ink);margin:0}
h1{font-size:clamp(2.4rem,5.2vw,4rem)}
h2{font-size:clamp(1.9rem,3.6vw,2.8rem)}
h3{font-size:1.32rem}
p{margin:0 0 1rem}
.eyebrow{
  font-family:var(--sans);font-weight:600;font-size:.74rem;letter-spacing:.22em;
  text-transform:uppercase;color:var(--gold);display:inline-flex;align-items:center;gap:.6rem;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--gold);display:inline-block}
.lead{font-size:1.16rem;color:var(--muted);max-width:60ch}

/* ---- Butonlar ---- */
.btn{display:inline-flex;align-items:center;gap:.55rem;padding:.9rem 1.5rem;border-radius:999px;
  font-weight:600;font-size:.98rem;cursor:pointer;border:1px solid transparent;transition:.2s ease;white-space:nowrap}
.btn-gold{background:linear-gradient(180deg,var(--gold-2),var(--gold));color:#20170a;box-shadow:var(--shadow-s)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 16px 34px -16px rgba(182,137,63,.7)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold)}
.btn-line-d{border-color:var(--line-d);color:#fff}
.btn-line-d:hover{background:rgba(255,255,255,.06);border-color:var(--gold-2);color:var(--gold-2)}

/* ---- Navbar ---- */
.nav{position:sticky;top:0;z-index:60;background:rgba(247,245,239,.82);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:74px;gap:1.5rem}
.brand{display:flex;align-items:center;gap:.7rem;font-family:var(--serif);font-size:1.32rem;color:var(--ink);font-weight:600}
.brand .mk{width:38px;height:38px;border-radius:10px;background:linear-gradient(145deg,var(--ink-3),var(--ink));
  display:grid;place-items:center;color:var(--gold-2);font-weight:600;box-shadow:var(--shadow-s);position:relative;overflow:hidden}
.brand .mk::after{content:"";position:absolute;inset:0;background:
  radial-gradient(circle at 30% 25%,rgba(202,162,90,.35),transparent 60%)}
.brand .mk span{position:relative;z-index:1;font-family:var(--serif);font-size:1.15rem}
.brand small{display:block;font-family:var(--sans);font-size:.62rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);font-weight:600;margin-top:1px}
.nav-links{display:flex;align-items:center;gap:2rem;list-style:none;margin:0;padding:0}
.nav-links a{font-size:.96rem;color:var(--muted);font-weight:500;transition:.15s}
.nav-links a:hover{color:var(--ink)}
.nav-cta{display:flex;align-items:center;gap:.8rem}
.burger{display:none;background:none;border:0;cursor:pointer;flex-direction:column;gap:5px;padding:6px}
.burger span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.2s}

/* ---- Hero ---- */
.hero{background:
   radial-gradient(1100px 520px at 78% -8%,rgba(182,137,63,.16),transparent 60%),
   linear-gradient(180deg,var(--ink),var(--ink-2));
  color:#fff;position:relative;overflow:hidden;border-bottom:1px solid var(--line-d)}
.hero::before{content:"";position:absolute;inset:0;opacity:.5;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:52px 52px;mask-image:radial-gradient(900px 500px at 70% 0%,#000,transparent 75%)}
.hero-in{position:relative;z-index:1;padding:104px 0 118px;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero h1{color:#fff;margin:.9rem 0 1.3rem}
.hero h1 em{font-style:italic;color:var(--gold-2)}
.hero p{color:var(--muted-d);font-size:1.16rem;max-width:52ch}
.hero .eyebrow{color:var(--gold-2)}
.hero .eyebrow::before{background:var(--gold-2)}
.hero-cta{display:flex;gap:.9rem;flex-wrap:wrap;margin-top:2rem}
.hero-meta{display:flex;gap:2.2rem;margin-top:2.8rem;flex-wrap:wrap}
.hero-meta div{display:flex;flex-direction:column}
.hero-meta b{font-family:var(--serif);font-size:2rem;color:#fff;font-weight:500;line-height:1}
.hero-meta small{color:var(--muted-d);font-size:.82rem;margin-top:.35rem;letter-spacing:.02em}
/* hero kart */
.hero-card{background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line-d);border-radius:20px;padding:26px;backdrop-filter:blur(6px);box-shadow:var(--shadow)}
.hero-card h4{color:#fff;font-family:var(--sans);font-weight:600;font-size:.8rem;letter-spacing:.16em;text-transform:uppercase;color:var(--gold-2);margin-bottom:1.1rem}
.hc-row{display:flex;align-items:flex-start;gap:.9rem;padding:.85rem 0;border-top:1px solid var(--line-d)}
.hc-row:first-of-type{border-top:0}
.hc-ic{width:34px;height:34px;flex:none;border-radius:9px;background:rgba(202,162,90,.14);display:grid;place-items:center;color:var(--gold-2);font-size:1.05rem}
.hc-row b{color:#fff;font-family:var(--sans);font-weight:600;font-size:.98rem;display:block}
.hc-row span{color:var(--muted-d);font-size:.86rem}

/* ---- Bölüm ---- */
section{padding:96px 0}
.sec-head{max-width:64ch;margin-bottom:52px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head.center .eyebrow{justify-content:center}
.sec-head h2{margin:.8rem 0 1rem}

/* şerit güven */
.trust{background:var(--ink);color:var(--muted-d);padding:26px 0}
.trust-in{display:flex;align-items:center;justify-content:space-between;gap:2rem;flex-wrap:wrap}
.trust span{font-size:.78rem;letter-spacing:.18em;text-transform:uppercase;color:var(--gold-2);font-weight:600}
.trust ul{display:flex;gap:2.4rem;list-style:none;margin:0;padding:0;flex-wrap:wrap}
.trust li{font-family:var(--serif);font-size:1.15rem;color:#e8e3d6;opacity:.9}

/* ---- Uzmanlık kartları ---- */
.grid{display:grid;gap:22px}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:30px;transition:.22s ease;position:relative}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#dcd4c0}
.card .ic{width:52px;height:52px;border-radius:13px;display:grid;place-items:center;font-size:1.5rem;
  background:linear-gradient(150deg,var(--gold-soft),#fff);border:1px solid var(--line);color:var(--gold);margin-bottom:1.1rem}
.card h3{margin-bottom:.55rem}
.card p{color:var(--muted);font-size:.98rem;margin:0}
.card .no{position:absolute;top:26px;right:30px;font-family:var(--serif);font-size:.95rem;color:var(--gold);opacity:.55}

/* ---- Hakkında split ---- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.about-visual{position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line);background:
  linear-gradient(160deg,var(--ink),var(--ink-2));min-height:420px;box-shadow:var(--shadow);padding:38px;color:#fff;display:flex;flex-direction:column;justify-content:flex-end}
.about-visual::before{content:"";position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:44px 44px;mask-image:radial-gradient(600px 400px at 20% 0%,#000,transparent 80%)}
.about-visual .quote{position:relative;font-family:var(--serif);font-size:1.5rem;line-height:1.4;color:#fff;font-style:italic}
.about-visual .sig{position:relative;margin-top:1.4rem;color:var(--gold-2);font-weight:600;letter-spacing:.04em}
.about-visual .sig small{display:block;color:var(--muted-d);font-weight:400;font-size:.82rem;letter-spacing:.02em;margin-top:.2rem}
.tick{list-style:none;margin:1.4rem 0 0;padding:0}
.tick li{position:relative;padding:.5rem 0 .5rem 2rem;color:var(--text);border-bottom:1px dashed var(--line)}
.tick li:last-child{border-bottom:0}
.tick li::before{content:"";position:absolute;left:0;top:.85rem;width:9px;height:9px;border-radius:2px;background:var(--gold);transform:rotate(45deg)}

/* ---- Zaman çizelgesi (25 yıl) ---- */
.timeline{position:relative;margin-top:20px}
.timeline::before{content:"";position:absolute;left:120px;top:8px;bottom:8px;width:1px;background:var(--line)}
.tl-row{display:grid;grid-template-columns:120px 1fr;gap:34px;padding:18px 0;position:relative}
.tl-year{font-family:var(--serif);font-size:1.5rem;color:var(--gold);text-align:right}
.tl-body{position:relative;padding-left:34px}
.tl-body::before{content:"";position:absolute;left:-6px;top:8px;width:13px;height:13px;border-radius:50%;background:#fff;border:2px solid var(--gold)}
.tl-body h3{font-size:1.1rem;margin-bottom:.25rem}
.tl-body p{color:var(--muted);font-size:.96rem;margin:0}

/* ---- İstatistik şerit ---- */
.stats{background:linear-gradient(180deg,var(--ink-2),var(--ink));color:#fff}
.stats .grid{gap:0}
.stat{padding:14px 30px;border-left:1px solid var(--line-d)}
.stat:first-child{border-left:0;padding-left:0}
.stat b{font-family:var(--serif);font-size:3rem;font-weight:500;color:var(--gold-2);display:block;line-height:1}
.stat span{color:var(--muted-d);font-size:.95rem}

/* ---- Referans / portföy ---- */
.ref{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:.22s}
.ref:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#dcd4c0}
.ref-top{padding:24px 26px 0;display:flex;align-items:center;justify-content:space-between}
.ref-badge{font-size:.72rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--teal);
  background:rgba(47,109,99,.09);padding:.28rem .6rem;border-radius:6px}
.ref h3{padding:14px 26px 0;font-size:1.2rem}
.ref p{padding:.4rem 26px 0;color:var(--muted);font-size:.94rem}
.ref .go{display:inline-flex;align-items:center;gap:.4rem;padding:16px 26px 24px;color:var(--gold);font-weight:600;font-size:.9rem}

/* ---- CTA ---- */
.cta{background:
   radial-gradient(700px 340px at 80% 0%,rgba(182,137,63,.2),transparent 60%),
   linear-gradient(160deg,var(--ink),var(--ink-2));color:#fff;border-radius:24px;padding:64px;text-align:center;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:48px 48px;mask-image:radial-gradient(600px 300px at 50% 0%,#000,transparent 75%)}
.cta h2{color:#fff;position:relative;max-width:20ch;margin:0 auto 1rem}
.cta p{color:var(--muted-d);position:relative;max-width:52ch;margin:0 auto 2rem}
.cta .hero-cta{justify-content:center;position:relative}

/* ---- İletişim formu ---- */
.form{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:34px;box-shadow:var(--shadow-s)}
.field{margin-bottom:1.1rem}
.field label{display:block;font-size:.82rem;font-weight:600;color:var(--ink);margin-bottom:.4rem;letter-spacing:.02em}
.field input,.field textarea,.field select{width:100%;padding:.85rem 1rem;border:1px solid var(--line);border-radius:10px;
  font-family:inherit;font-size:1rem;color:var(--text);background:var(--paper);transition:.18s}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--gold);background:#fff;box-shadow:0 0 0 4px rgba(182,137,63,.12)}
.field textarea{min-height:130px;resize:vertical}
.info-list{list-style:none;margin:0;padding:0}
.info-list li{display:flex;gap:1rem;padding:1.1rem 0;border-bottom:1px solid var(--line)}
.info-list li:last-child{border-bottom:0}
.info-list .ic{width:44px;height:44px;flex:none;border-radius:11px;background:var(--gold-soft);display:grid;place-items:center;color:var(--gold);font-size:1.15rem}
.info-list b{display:block;color:var(--ink);font-size:.95rem}
.info-list span{color:var(--muted);font-size:.92rem}

/* ---- İç sayfa başlığı ---- */
.page-hero{background:linear-gradient(180deg,var(--ink),var(--ink-2));color:#fff;padding:76px 0 64px;border-bottom:1px solid var(--line-d);position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:50px 50px;mask-image:radial-gradient(700px 400px at 75% 0%,#000,transparent 75%)}
.page-hero h1{color:#fff;position:relative;margin:.7rem 0 .8rem}
.page-hero p{color:var(--muted-d);position:relative;max-width:60ch;margin:0}
.crumb{position:relative;font-size:.85rem;color:var(--muted-d)}
.crumb a{color:var(--gold-2)}

.prose h2{margin:2.4rem 0 1rem}
.prose h3{margin:1.8rem 0 .6rem}
.prose p,.prose li{color:var(--muted)}
.prose ul{padding-left:1.2rem}

/* ---- Footer ---- */
.foot{background:var(--ink);color:var(--muted-d);padding:70px 0 30px;border-top:1px solid var(--line-d)}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;border-bottom:1px solid var(--line-d)}
.foot .brand{color:#fff}
.foot .brand small{color:var(--muted-d)}
.foot p{color:var(--muted-d);font-size:.94rem;max-width:34ch;margin-top:1rem}
.foot h5{color:#fff;font-family:var(--sans);font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;margin:0 0 1.1rem}
.foot ul{list-style:none;margin:0;padding:0}
.foot ul li{margin-bottom:.7rem}
.foot ul a{color:var(--muted-d);font-size:.94rem;transition:.15s}
.foot ul a:hover{color:var(--gold-2)}
.foot-bot{display:flex;justify-content:space-between;align-items:center;padding-top:24px;font-size:.85rem;color:var(--muted-d);flex-wrap:wrap;gap:1rem}
.foot-bot a{color:var(--gold-2)}

/* ---- Duyarlı ---- */
@media(max-width:920px){
  .hero-in,.split{grid-template-columns:1fr;gap:40px}
  .g-3{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .nav-links,.nav-cta .btn-ghost{display:none}
  .burger{display:flex}
  .nav-links.open{display:flex;position:absolute;top:74px;left:0;right:0;background:var(--paper);flex-direction:column;
    padding:18px 24px;gap:1.1rem;border-bottom:1px solid var(--line);box-shadow:var(--shadow-s)}
  .timeline::before{left:70px}
  .tl-row{grid-template-columns:70px 1fr;gap:18px}
  .tl-year{font-size:1.15rem}
  .stat{border-left:0;padding:14px 0}
}
@media(max-width:560px){
  .g-3,.g-2{grid-template-columns:1fr}
  .cta{padding:44px 24px}
  section{padding:70px 0}
  .hero-in{padding:70px 0 80px}
}

/* ============================================================
   ŞİRKETİNİZE ÖZEL YAPAY ZEKÂ — vitrin bandı (ATLAS-OGRENDI)
   ============================================================ */
.ai-band{background:linear-gradient(180deg,var(--ink),var(--ink-2));color:#fff;position:relative;overflow:hidden}
.ai-band::before{content:"";position:absolute;inset:0;background:
  radial-gradient(600px 320px at 82% -8%,rgba(202,162,90,.14),transparent 60%),
  radial-gradient(520px 300px at 8% 108%,rgba(47,109,99,.16),transparent 60%);pointer-events:none}
.ai-band .wrap{position:relative}
.ai-band .eyebrow{color:var(--gold-2)}
.ai-band .eyebrow::before{background:var(--gold-2)}
.ai-band h2{color:#fff}
.ai-band h2 em{color:var(--gold-2);font-style:italic}
.ai-band .lead{color:var(--muted-d)}
.ai-flow{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:34px 0 8px}
.ai-step{background:rgba(255,255,255,.04);border:1px solid var(--line-d);border-radius:var(--r);padding:22px 22px 20px;position:relative}
.ai-step .s-no{font-family:var(--serif);font-size:1.9rem;color:var(--gold-2);line-height:1;display:block;margin-bottom:10px}
.ai-step h4{color:#fff;font-size:1.12rem;margin-bottom:6px}
.ai-step p{color:var(--muted-d);margin:0;font-size:.96rem}
.ai-step .arrow{position:absolute;right:-20px;top:50%;transform:translateY(-50%);color:var(--gold);font-size:1.3rem;z-index:2}
.ai-note{display:flex;align-items:center;gap:14px;margin-top:26px;padding:18px 22px;
  background:rgba(202,162,90,.08);border:1px solid rgba(202,162,90,.28);border-radius:var(--r)}
.ai-note .tag{flex:0 0 auto;font-family:var(--sans);font-weight:700;font-size:.72rem;letter-spacing:.12em;
  text-transform:uppercase;color:#20170a;background:linear-gradient(180deg,var(--gold-2),var(--gold));
  padding:7px 12px;border-radius:100px}
.ai-note span{color:var(--muted-d);font-size:.98rem}
.ai-note b{color:#fff}
@media(max-width:820px){
  .ai-flow{grid-template-columns:1fr}
  .ai-step .arrow{display:none}
}