:root{
  --bg: #f6f8fb;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --border: rgba(15, 23, 42, 0.10);

  /* theme gradients */
  --a1: #0b1b3a;  /* tech */
  --a2: #1b3f8b;

  --b1: #0b2a24;  /* design */
  --b2: #1e7c6c;

  --c1: #2a1439;  /* lab */
  --c2: #7a2bc2;

  --g1: var(--a1);
  --g2: var(--a2);

  --r: 22px;
}

*{ box-sizing: border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  background: var(--bg);
  color: var(--text);
}

a{ color: inherit; text-decoration: none; }
img{ max-width: 100%; display:block; }

.wrap{
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px 18px 80px;
}

/* TOPBAR */
.topbar{
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(246,248,251,.85);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.topbar .inner{
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 18px;
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 16px;
  position: relative;
}

.brand{
  display:flex;
  align-items:center;
  gap: 10px;
}

/* Logo büyür, topbar boyutu değişmez */
.brandLogo{
  height: 100px;
  width: auto;
  object-fit: contain;
}

/* NAV */
.navRight{
  display:flex;
  align-items:center;
  gap: 14px;
}

.navLinks{
  display:flex;
  align-items:center;
  gap: 22px;
  position: absolute;
  left: 50%;
  transform: translateX(-90%);
  white-space: nowrap;
}

.navLink,
.ddBtn{
  font-weight: 600;
  font-size: 16px;
  color: rgba(15,23,42,.8);
}

.navLink:hover{ color: rgba(15,23,42,1); }
.ddBtn:hover{ color: rgba(15,23,42,1); }

.catTabs{
  display:flex;
  gap: 8px;
  background: rgba(15,23,42,.04);
  border: 1px solid var(--border);
  padding: 6px;
  border-radius: 999px;
}
.catTab{
  border:0;
  background: transparent;
  padding: 8px 10px;
  border-radius: 999px;
  font-weight: 700;
  cursor:pointer;
  color: rgba(15,23,42,.75);
}
.catTab[aria-selected="true"]{
  background: #fff;
  border: 1px solid var(--border);
  color: rgba(15,23,42,1);
}

/* DROPDOWN */
.dd{ position: relative; }

.ddBtn{
  border:0;
  background: transparent;
  cursor: pointer;
  display:flex;
  align-items:center;
  justify-content:center;
  gap: 8px;
  padding: 0;
}

.chev{
  width: 10px; height: 10px;
  display:inline-block;
  border-right: 2px solid rgba(15,23,42,.55);
  border-bottom: 2px solid rgba(15,23,42,.55);
  transform: rotate(45deg);
  margin-top: -2px;
}

.ddPanel{
  position:absolute;
  right: 0;
  top: calc(100% + 10px);
  min-width: 260px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 8px;
  box-shadow: 0 18px 50px rgba(15,23,42,.12);
  display:none;
}
.dd.open .ddPanel{ display:block; }
.ddItem{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 10px;
  border-radius: 12px;
  font-weight: 650;
}
.ddItem:hover{ background: rgba(15,23,42,.04); }
.arrow{ opacity:.6; }

/* BUTTONS */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height: 40px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #fff;
  font-weight: 750;
}
.btn.primary{
  background: linear-gradient(135deg, var(--g1), var(--g2));
  color: #fff;
  border: 0;
}

/* SECTIONS */
.section{ padding: 26px 0; }
.sectionHead{
  display:flex;
  align-items:center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.sectionHead h2{
  margin: 0;
  font-size: 28px;
}

/* CARDS */
.card{
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  box-shadow: 0 14px 45px rgba(15,23,42,.06);
}
.hero{ padding: 26px 0 6px; }

.grid{
  display:grid;
  grid-template-columns: 1.25fr .75fr;
  gap: 16px;
}
.heroCard{ padding: 26px; }
.sideCard{ padding: 18px; }

.kicker{
  display:inline-flex;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-weight: 800;
  background: rgba(15,23,42,.03);
  margin-bottom: 10px;
}
.hero h1{
  margin: 0 0 10px;
  font-size: 44px;
  line-height: 1.05;
}
.lead{
  margin: 0;
  font-size: 16px;
  color: rgba(15,23,42,.78);
  line-height: 1.55;
}
.ctaRow{
  display:flex;
  gap: 10px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.miniTitle{
  margin: 0 0 6px;
  font-weight: 800;
}
.miniText{
  margin: 0 0 12px;
  color: rgba(15,23,42,.7);
}
.pillRow{
  display:flex;
  flex-wrap: wrap;
  gap: 8px;
}
.pill{
  display:inline-flex;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(15,23,42,.03);
  font-weight: 750;
  font-size: 13px;
}

/* SERVICES GRID */
.cards4{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.tile{ padding: 22px; }
.tile h3{
  margin: 0 0 10px;
  font-size: 22px;
}
.tile p{
  margin: 0;
  color: rgba(15,23,42,.75);
  line-height: 1.55;
}
.tag{
  display:flex;
  align-items:center;
  gap: 10px;
  margin-top: 16px;
  font-weight: 800;
}
.spark{
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--g1), var(--g2));
}

/* PROCESS */
.steps4{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.stepCard{ padding: 22px; }
.stepNum{
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight: 900;
  background: rgba(15,23,42,.04);
  border: 1px solid var(--border);
  margin-bottom: 10px;
}

/* FAQ */
.faq{ display:grid; gap: 10px; }
.faqItem{
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px 18px;
  background: #fff;
  cursor:pointer;
}
.faqQ{
  display:flex;
  justify-content: space-between;
  font-weight: 850;
}
.faqA{
  margin-top: 10px;
  color: rgba(15,23,42,.75);
  line-height: 1.55;
  display:none;
}
.faqItem.open .faqA{ display:block; }

/* CONTACT */
.contactGrid{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.iconRow{
  display:flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}
.iconBtn{
  display:inline-flex;
  align-items:center;
  gap: 10px;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 10px 12px;
  background: rgba(15,23,42,.02);
  font-weight: 800;
}
.icoImg{
  width: 18px;
  height: 18px;
  object-fit: contain;
}

.muted{ color: rgba(15,23,42,.75); }

footer{
  padding: 18px 0 0;
  display:flex;
  justify-content: space-between;
  color: rgba(15,23,42,.6);
  font-weight: 650;
}

/* --------------------------
   MOBİL MENÜ + HAMBURGER
-------------------------- */

.menuBtn{
  display:none;
  width: 46px;
  height: 46px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.95);
  cursor:pointer;

  display:flex;
  align-items:center;
  justify-content:center;
  padding: 0;

  box-shadow: 0 12px 35px rgba(15,23,42,.10);
  -webkit-tap-highlight-color: transparent;
}
.menuBtn:hover{ background: #fff; }
.menuBtn:active{ transform: translateY(1px); }

.menuBtn .hb{
  position: relative;
  width: 22px;
  height: 16px;
  display:block;
}
.menuBtn .hb::before,
.menuBtn .hb::after,
.menuBtn .hb i{
  content:"";
  position: absolute;
  left: 0;
  height: 2.5px;
  background: rgba(15,23,42,.92);
  border-radius: 999px;
  transition: transform .18s ease, top .18s ease, opacity .18s ease, width .18s ease;
}
.menuBtn .hb::before{ top: 0; width: 14px; }
.menuBtn .hb i{ top: 6.5px; width: 22px; }
.menuBtn .hb::after{ top: 13px; width: 18px; }

.menuBtn[aria-expanded="true"] .hb::before{
  top: 6.5px; width: 22px; transform: rotate(45deg);
}
.menuBtn[aria-expanded="true"] .hb i{
  opacity: 0; transform: translateX(6px);
}
.menuBtn[aria-expanded="true"] .hb::after{
  top: 6.5px; width: 22px; transform: rotate(-45deg);
}

.mOverlay{
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.35);
  opacity: 0;
  pointer-events: none;
  transition: .2s ease;
  z-index: 99;
}
.mOverlay.open{
  opacity: 1;
  pointer-events: auto;
}

.mPanel{
  position: fixed;
  top: 0;
  right: 0;
  height: 100vh;
  width: min(380px, 92vw);
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(12px);
  border-left: 1px solid var(--border);
  box-shadow: -18px 0 60px rgba(15,23,42,.18);
  transform: translateX(110%);
  transition: .22s ease;
  z-index: 100;
  padding: 16px;
  display:flex;
  flex-direction: column;
  gap: 12px;
}
.mPanel.open{ transform: translateX(0); }

.mHead{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 10px;
}
.mTitle{ font-weight: 950; font-size: 18px; }
.mClose{
  width: 42px; height: 42px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background:#fff;
  cursor:pointer;
  font-size: 18px;
  color: rgba(15,23,42,.85);
}

.mCats{
  display:flex;
  gap: 8px;
  padding: 6px;
  background: rgba(15,23,42,.04);
  border: 1px solid var(--border);
  border-radius: 999px;
}
.mCat{
  flex: 1;
  text-align:center;
  padding: 10px 10px;
  border-radius: 999px;
  font-weight: 900;
  font-size: 13px;
  border: 1px solid transparent;
  color: rgba(15,23,42,.78);
  background: transparent;
}

/* ✅ mobilde aktif kategori tema rengiyle gözüksün */
.mCats .catTab[aria-selected="true"]{
  background: linear-gradient(135deg, var(--g1), var(--g2));
  color: #fff;
  border: 1px solid rgba(255,255,255,.35);
  box-shadow: 0 10px 28px rgba(15,23,42,.10);
}
.mCats .catTab[aria-selected="false"]{
  background: rgba(255,255,255,.65);
  border: 1px solid var(--border);
}

.mNav{ display:flex; flex-direction: column; gap: 8px; }

.mLink{
  padding: 14px 12px;
  border-radius: 16px;
  font-weight: 950;
  font-size: 18px;
  background: rgba(255,255,255,.70);
  border: 1px solid var(--border);
}
.mLink:hover{ background: rgba(15,23,42,.04); }

.mAccBtn{
  width: 100%;
  text-align: left;
  padding: 14px 12px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.70);
  font-weight: 950;
  font-size: 18px;
  cursor:pointer;
  color: var(--text);
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 10px;
}
.mAccIcon{
  width: 10px; height: 10px;
  display:inline-block;
  border-right: 2px solid rgba(15,23,42,.55);
  border-bottom: 2px solid rgba(15,23,42,.55);
  transform: rotate(45deg);
  margin-top: -2px;
}
.mAccBtn[aria-expanded="true"] .mAccIcon{
  transform: rotate(-135deg);
  margin-top: 2px;
}

.mAccPanel{
  display:none;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: rgba(255,255,255,.92);
}
.mAccPanel.open{ display:block; }

.mSvcItem{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 10px;
  border-radius: 14px;
  font-weight: 900;
  font-size: 16px;
}
.mSvcItem:hover{ background: rgba(15,23,42,.04); }
.mSvcArrow{ opacity:.6; }

.mPrimary{
  margin-top: auto;
  display:flex;
  align-items:center;
  justify-content:center;
  height: 52px;
  border-radius: 18px;
  font-weight: 950;
  font-size: 18px;
  color:#fff;
  background: linear-gradient(135deg, var(--g1), var(--g2));
  box-shadow: 0 18px 55px rgba(15,23,42,.18);
}

/* RESPONSIVE */
@media (max-width: 1100px){
  .grid{ grid-template-columns: 1fr; }
  .cards4{ grid-template-columns: repeat(2, 1fr); }
  .steps4{ grid-template-columns: repeat(2, 1fr); }
  .contactGrid{ grid-template-columns: 1fr; }
  .navLinks{ display:none; }
  .menuBtn{ display:flex; }
}
@media (max-width: 640px){
  .cards4{ grid-template-columns: 1fr; }
  .steps4{ grid-template-columns: 1fr; }
  .hero h1{ font-size: 34px; }
  .catTabs{ display:none; }
  .brandLogo{ height: 100px; }
}