:root {
  --bg: #0f1216;
  --bg-2: #161b22;
  --kart: #171d26;
  --cizgi: #242c38;
  --ink: #eef2f7;
  --soft: #9aa7b6;
  --kobalt: #4c7dff;
  --kobalt-2: #6b93ff;
  --kobalt-koyu: #3b63d6;
  --golge: 0 18px 50px rgba(0, 0, 0, .35);
  --r: 16px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, .marka { font-family: "Sora", sans-serif; letter-spacing: -0.02em; }

a { color: inherit; text-decoration: none; }

/* ---------------------------------------------------------------- üst bar */
.ust {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 22px;
  background: rgba(15, 18, 22, .72);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--cizgi);
}
.marka {
  font-weight: 700; font-size: 18px;
  display: grid; place-items: center;
  width: 42px; height: 42px; border-radius: 11px;
  background: linear-gradient(135deg, var(--kobalt), var(--kobalt-koyu));
  color: #fff;
}
.ust nav { display: flex; gap: 26px; }
.ust nav a { color: var(--soft); font-size: 15px; transition: color .2s; }
.ust nav a:hover { color: var(--ink); }

/* ---------------------------------------------------------------- kahraman */
main { max-width: 980px; margin: 0 auto; padding: 0 22px; }

.kahraman { padding: 92px 0 72px; }
.eyebrow {
  color: var(--kobalt-2); font-weight: 600; font-size: 14px;
  text-transform: uppercase; letter-spacing: .12em; margin-bottom: 16px;
}
.kahraman h1 { font-size: clamp(40px, 8vw, 68px); font-weight: 700; line-height: 1.05; }
.giris {
  color: var(--soft); font-size: clamp(17px, 2.4vw, 20px);
  max-width: 620px; margin-top: 20px;
}
.giris strong { color: var(--ink); font-weight: 600; }
.kahraman-dugmeler { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

/* ---------------------------------------------------------------- düğmeler */
.dugme {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 24px; border-radius: 12px;
  font-weight: 600; font-size: 15.5px; transition: transform .15s, background .2s, border-color .2s;
}
.dugme:active { transform: translateY(1px); }
.dugme.birincil { background: var(--kobalt); color: #fff; }
.dugme.birincil:hover { background: var(--kobalt-2); }
.dugme.ikincil { background: transparent; color: var(--ink); border: 1px solid var(--cizgi); }
.dugme.ikincil:hover { border-color: var(--kobalt); }

/* ---------------------------------------------------------------- bölümler */
.bolum { padding: 64px 0; border-top: 1px solid var(--cizgi); }
.bolum-baslik { font-size: clamp(26px, 4vw, 34px); margin-bottom: 36px; }

/* öne çıkan proje */
.one-cikan {
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 36px; align-items: center;
  background: linear-gradient(160deg, var(--bg-2), var(--kart));
  border: 1px solid var(--cizgi); border-radius: 20px; padding: 36px;
  box-shadow: var(--golge);
}
.etiket {
  display: inline-block; color: var(--kobalt-2); font-size: 13px; font-weight: 600;
  text-transform: uppercase; letter-spacing: .08em; margin-bottom: 12px;
}
.one-cikan h3 { font-size: 28px; margin-bottom: 12px; }
.one-cikan p { color: var(--soft); }
.ozellik { list-style: none; margin: 18px 0 24px; }
.ozellik li { color: var(--soft); padding-left: 26px; position: relative; margin-bottom: 8px; }
.ozellik li::before {
  content: "✓"; position: absolute; left: 0; color: var(--kobalt-2); font-weight: 700;
}
.indir-satir { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.indir-not { color: var(--soft); font-size: 13.5px; }

/* öne çıkan görsel: sesli komut penceresi */
.one-cikan-gorsel { display: grid; place-items: center; }
.pencere {
  width: 100%; max-width: 320px; background: #0c0f14; border: 1px solid var(--cizgi);
  border-radius: 14px; padding: 18px; position: relative;
}
.pencere .nokta {
  display: inline-block; width: 11px; height: 11px; border-radius: 50%;
  background: #2b333f; margin-right: 6px;
}
.pencere .nokta:first-child { background: var(--kobalt); }
.dalga { display: flex; align-items: center; gap: 5px; height: 56px; margin: 22px 0 16px; }
.dalga span {
  flex: 1; background: linear-gradient(var(--kobalt-2), var(--kobalt));
  border-radius: 4px; animation: dalga 1.2s ease-in-out infinite;
}
.dalga span:nth-child(1){ animation-delay: 0s } .dalga span:nth-child(2){ animation-delay:.1s }
.dalga span:nth-child(3){ animation-delay:.2s } .dalga span:nth-child(4){ animation-delay:.3s }
.dalga span:nth-child(5){ animation-delay:.4s } .dalga span:nth-child(6){ animation-delay:.5s }
.dalga span:nth-child(7){ animation-delay:.6s }
@keyframes dalga { 0%,100%{ transform: scaleY(.3) } 50%{ transform: scaleY(1) } }
@media (prefers-reduced-motion: reduce) { .dalga span { animation: none; transform: scaleY(.6); } }
.pencere-metin { color: var(--ink); font-size: 14.5px; font-style: italic; }

/* proje kartları */
.kartlar { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 24px; }
.kart {
  background: var(--kart); border: 1px solid var(--cizgi); border-radius: var(--r);
  padding: 24px; transition: transform .18s, border-color .2s;
}
.kart:hover { transform: translateY(-3px); border-color: var(--kobalt); }
.kart h3 { font-size: 20px; margin-bottom: 10px; }
.kart p { color: var(--soft); font-size: 15px; }
.kart-link { display: inline-block; margin-top: 16px; color: var(--kobalt-2); font-weight: 600; font-size: 15px; }
.durum {
  display: inline-block; margin-top: 16px; font-size: 13px; font-weight: 600;
  color: var(--soft); border: 1px solid var(--cizgi); border-radius: 20px; padding: 4px 12px;
}

/* hakkımda */
.hakkimda-govde { max-width: 680px; }
.hakkimda-govde p { color: var(--soft); font-size: 17px; margin-bottom: 16px; }
.hakkimda-govde strong { color: var(--ink); }
.beceriler { list-style: none; display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.beceriler li {
  background: var(--bg-2); border: 1px solid var(--cizgi); border-radius: 20px;
  padding: 7px 16px; font-size: 14px; color: var(--ink);
}

/* iletişim */
.iletisim p { color: var(--soft); font-size: 18px; margin-bottom: 24px; }

footer {
  border-top: 1px solid var(--cizgi); padding: 32px 22px; text-align: center;
  color: var(--soft); font-size: 14px; margin-top: 40px;
}

/* ---------------------------------------------------------------- responsive */
@media (max-width: 760px) {
  .ust nav { gap: 18px; }
  .one-cikan { grid-template-columns: 1fr; padding: 26px; }
  .one-cikan-gorsel { order: -1; }
  .kartlar { grid-template-columns: 1fr; }
}
@media (max-width: 420px) {
  .ust nav a:not(:last-child) { display: none; }
}