:root{
  --blue:#0b5db8;
  --blue2:#1a8ceb;
  --bg:#F5F7FA;
  --text:#2b2f36;
  --footer:#1E2A35;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Poppins',sans-serif;background:var(--bg);color:var(--text);scroll-behavior:smooth}
a{text-decoration:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:999;
  background:#ffffff; /* beyaz arka plan */
  color:#111;
  box-shadow:0 4px 10px rgba(0,0,0,0.05);
}
/* ==== Hamburger Menü ==== */
.menu-toggle{
  display:none;
  font-size:28px;
  cursor:pointer;
  color:#111;
  position:absolute;
  right:20px;
  top:22px; /* logoyla hizalanır */
  z-index:1001; /* menü üstünde kalır */
}


/* Mobil görünümde aktif olsun */
@media (max-width:768px){
  .menu-toggle{
    display:block;
  }
  .menu {
  display: none;
  flex-direction: column;
  position: absolute;
  top: 70px;
  left: 0;
  right: 0;
  background: #ffffff;
  padding: 15px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  z-index: 999; /* eski 998 yerine 999 veya 1000 yap */
  transition: all 0.3s ease;
  opacity: 0;
  visibility: hidden;
}

.menu.show {
  display: flex;
  opacity: 1;
  visibility: visible;
  animation: fadeDown .3s ease forwards;
}

  @keyframes fadeDown{
    from{opacity:0;transform:translateY(-10px);}
    to{opacity:1;transform:translateY(0);}
  }
}
#services.section { background:#f8faff; }
#projects.section { background:#ffffff; }
#references.section { background:#f4f7fa; }
#contact.section { background:#fefefe; }

.navbar{display:flex;align-items:center;justify-content:space-between;padding:16px 0}
.logo{
  display:flex;
  align-items:center;
  font-weight:700;
  font-size:20px;
  letter-spacing:.5px;
  color:#fff;
}
.logo img{
  height:40px;
  filter:drop-shadow(0 1px 2px rgba(0,0,0,0.1));
}

.menu a{
  color:#111;
  margin-left:24px;
  font-weight:500;
  transition:.25s;
}
.menu a:hover{
  color:#0b5db8; /* BasaranApps mavisi */
}

.hero{
  position: relative;
  height: 60vh; /* ekranın %60'ı kadar yüksek */
  overflow: hidden;
  margin-top: 80px; /* menünün altına itmek için boşluk */
}
.hero .slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity 1.2s ease}
.hero .slide.active{opacity:1}
.hero .caption{position:absolute;left:0;right:0;bottom:80px;text-align:center;color:#fff}
.hero .caption h1{
  font-size:32px;
  margin-bottom:8px;
  text-shadow:0 4px 16px rgba(0,0,0,0.3);
}
.hero .caption p{
  font-size:16px;
  max-width:700px;
  margin:0 auto 16px;
  opacity:.9;
  text-shadow:0 3px 12px rgba(0,0,0,0.3);
}

.btn{display:inline-block;background:#fff;color:var(--blue);padding:12px 26px;border-radius:10px;font-weight:700;transition:.25s}
.btn:hover{transform:translateY(-2px);background:#eef3ff}
.section{padding:45px 0}
/* Arka plan geçiş renkleri (her iki bölümde bir) */
.section:nth-of-type(even){
  background:#f0f3f7; /* açık gri */
}
.section:nth-of-type(odd){
  background:#ffffff; /* beyaz */
}

/* Fade-in animasyonu */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  opacity: 0;
  animation: fadeInUp 0.8s ease forwards;
}

.fade-in.delay-1 { animation-delay: 0.2s; }
.fade-in.delay-2 { animation-delay: 0.4s; }
.fade-in.delay-3 { animation-delay: 0.6s; }
.fade-in.delay-4 { animation-delay: 0.8s; }

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
  transition: all 0.8s ease;
}


.section{
  transition:background-color 0.4s ease-in-out;
}

.references-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 25px;
  margin-top: 30px;
}

.reference-card {
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
  text-align: center;
  padding: 25px 15px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.reference-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 8px 22px rgba(0,0,0,0.12);
}

.reference-img {
  width: 100%;
  height: 100px;
  object-fit: contain;
  margin-bottom: 12px;
  filter: grayscale(0%);
  transition: filter 0.3s ease;
}

.reference-card:hover .reference-img {
  filter: grayscale(0%);
}

.reference-body h5 {
  font-size: 17px;
  font-weight: 600;
  color: #0b5db8;
  margin-bottom: 6px;
}

.reference-body p {
  font-size: 14px;
  color: #555;
  line-height: 1.5;
}
.reference-img {
  filter: grayscale(100%);
}
.reference-card:hover .reference-img {
  filter: grayscale(0%);
}

/* Hizmetlerimiz bölümü */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
  margin-top: 20px;
}

.service-card {
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 8px 22px rgba(0,0,0,0.12);
}

.service-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.service-body {
  padding: 20px;
  text-align: center;
}

.service-icon {
  font-size: 28px;
  color: #0b5db8;
  margin-bottom: 10px;
}

.service-body h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  color: #111;
}

.service-body p {
  font-size: 15px;
  color: #666;
  line-height: 1.6;
}


.services-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:20px;
  margin-top:30px;
}
.service-card{
  background:#fff;
  padding:20px;
  border-radius:12px;
  box-shadow:0 4px 12px rgba(0,0,0,0.05);
  text-align:center;
  transition:transform 0.3s;
}
.service-card:hover{transform:translateY(-4px);}
.service-card img.service-img{
  width:100%;
  height:150px;
  object-fit:cover;
  border-radius:8px;
  margin-bottom:10px;
}
/* Projelerimiz */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
  margin-top: 20px;
}

.project-card {
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 8px 22px rgba(0,0,0,0.12);
}

.project-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.project-body {
  padding: 20px;
  text-align: center;
}

.project-body h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  color: #111;
}

.project-body p {
  font-size: 15px;
  color: #666;
  line-height: 1.6;
}

.project-body .btn {
  border-radius: 8px;
  font-size: 14px;
}

.section-title{
  text-align:center;
  color:var(--blue);
  font-size:28px;
  margin-bottom:6px;
}
.section-title::after{
  content:"";
  display:block;
  width:80px;
  height:4px;
  margin:12px auto 0;
  border-radius:2px;
  background:linear-gradient(90deg, var(--blue), var(--blue2));
  box-shadow:0 2px 6px rgba(0,0,0,0.1);
}
.section-title{
  position:relative;
  transition:all 0.3s ease-in-out;
}
.section-title:hover{
  letter-spacing:1px;
  color:var(--blue2);
}

.section-sub{
  text-align:center;
  color:#555;
  margin-bottom:24px; /* 36 yerine 24 */
}
/* === Bölüm başlıklarının fade-in animasyonu === */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Başlık ve alt yazıya animasyon uygula */
.section-title,
.section-sub {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.section-title.visible,
.section-sub.visible {
  animation: fadeUp 0.8s ease-out forwards;
}
/* === Başlık alt çizgisinin (gradient line) fade-in animasyonu === */
.section-title::after {
  opacity: 0;
  transform: scaleX(0.3);
  transform-origin: center;
  transition: all 0.8s ease;
}

/* Başlık görünür olduğunda çizgi de belirsin */
.section-title.visible::after {
  opacity: 1;
  transform: scaleX(1);
}

.services{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:22px}
.card{background:#fff;border-radius:16px;box-shadow:0 10px 26px rgba(6,27,60,0.08);padding:22px;transition:.25s;opacity:0;transform:translateY(18px)}
.card.visible{opacity:1;transform:translateY(0)}
.card h3{color:var(--blue);font-size:18px;margin-bottom:8px}
.card p{color:#555;line-height:1.6}
.card .cta{margin-top:14px;display:inline-block;background:var(--blue);color:#fff;padding:10px 18px;border-radius:10px;font-weight:600}
.card .cta:hover{background:var(--blue2)}
.projects{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.project{background:#fff;border-radius:16px;box-shadow:0 10px 26px rgba(6,27,60,0.08);overflow:hidden;transition:.25s;opacity:0;transform:translateY(18px)}
.project.visible{opacity:1;transform:translateY(0)}
.project img{width:100%;height:220px;object-fit:cover}
.project .inner{padding:18px}
.project h4{color:var(--blue);margin-bottom:8px}
.project p{color:#555;line-height:1.6;margin-bottom:10px}
.testimonials{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:22px}
.testi{background:#fff;border-radius:16px;box-shadow:0 10px 26px rgba(6,27,60,0.08);padding:22px;opacity:0;transform:translateY(18px);transition:.25s}
.testi.visible{opacity:1;transform:translateY(0)}
.testi .name{color:var(--blue);font-weight:700;margin-top:10px}
.process{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px}
.step{background:#fff;border-radius:16px;box-shadow:0 10px 26px rgba(6,27,60,0.08);padding:18px;opacity:0;transform:translateY(18px);transition:.25s}
.step.visible{opacity:1;transform:translateY(0)}
.step h5{color:var(--blue);margin-bottom:6px}
.cta-band{background:linear-gradient(135deg, var(--blue), var(--blue2));color:#fff;border-radius:18px;padding:40px 24px;text-align:center}
.cta-band a{color:#fff;text-decoration:underline}
footer{background:var(--footer);color:#cfd8e3;margin-top:70px}
.footer-inner{display:flex;flex-wrap:wrap;gap:22px;justify-content:space-between;align-items:center;padding:22px 0}
.footer-links a{color:#cfd8e3;margin-left:16px}
@media (max-width:768px){.hero .caption h1{font-size:34px}}
/* ==== Mobil Menü Düzeltmesi ==== */
@media (max-width:768px){
  .navbar {
  position: relative;
  display: flex;
  justify-content: space-between; /* logo solda, hamburger sağda */
  align-items: center;
  padding: 10px 20px;
}


  .logo {
    margin-bottom: 10px; /* logo ile menü arasında boşluk */
  }

  .logo img {
    height: 36px;
    margin-left: 4px; /* sol kenara biraz boşluk */
  }

  .menu {
    display: flex;
    flex-wrap: wrap; /* menü satır taşsın */
    gap: 10px;
  }

  .menu a {
    color: #111;
    font-size: 15px;
    padding: 6px 10px;
    border-radius: 6px;
    background: #f4f6f9; /* hafif gri arka plan */
  }

  .menu a:hover {
    background: #e7edf5;
    color: var(--blue);
  }
}