/* OSB İnşaat — insaat-v1 üzerine firma özel eklemeler */
:root { --osb-red: #e32d27; --osb-gray: #5b5b5b; --osb-dark: #2b2a29; }

/* Üst iletişim şeridi */
.osb-topbar { background: var(--osb-dark); color: #d9d9d9; font-size: 14px; padding: 8px 0; }
.osb-topbar__inner { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.osb-topbar a { color: #fff; margin-left: 18px; white-space: nowrap; }
.osb-topbar a:hover { color: var(--osb-red); }
.osb-topbar i { color: var(--osb-red); margin-right: 5px; }
@media (max-width: 991px) { .osb-topbar__addr, .osb-hide-sm { display: none !important; } .osb-topbar__inner { justify-content: center; } .osb-topbar a { margin: 0 8px; } }

/* Logo: yatay logo, temanin kare logo kutusuna sigsin */
.osb-logo img { max-width: 230px; height: auto; }
@media (max-width: 575px) { .osb-logo img { max-width: 170px; } }
.res-log img { max-width: 200px; height: auto; }
.osb-footer-logo img { max-width: 230px; height: auto; }
.osb-footer-hours { color: #c9c9c9; margin-bottom: 16px; }

/* Header: temanin 10px ust boslugu top bar'in ustunde bosluk birakiyordu */
header { padding-top: 0; }

/* Slider: tum slaytlar ayni yukseklikte, yazi dikeyde ortali.
   Tema slayt yuksekligini icerige birakiyordu (740 / 828px); fade efektinde kisa
   slaytin altinda bosluk kaliyor, overflow:visible yuzunden uzun slayt alttaki
   bolumun ustune tasiyordu. */
.three-slider.swiper { overflow: hidden !important; }
.three-slider .featured-area {
  height: clamp(640px, 90vh, 860px);
  padding: 137px 0 70px;
  display: flex; align-items: center;
  background-size: cover; background-position: center;
}
.three-slider .featured-area > .container { width: 100%; }
/* Donuk kirmizi serit kaldirildi; yerine soldan saga koyu gecis (yazi okunur, foto gorunur) */
.three-slider .featured-area::after { display: none; }
.three-slider .featured-area::before {
  opacity: 1;
  background: linear-gradient(90deg, rgba(15,15,15,.88) 0%, rgba(15,15,15,.62) 50%, rgba(15,15,15,.25) 100%);
}
.three-slider .hero-three-text { width: 62%; }
.three-slider .hero-three-text h2 { font-size: 64px; line-height: 72px; }
.three-slider .hero-three-text h5 { color: #fff; }
.three-slider .hero-three-text h5:before { content: ""; display: inline-block; width: 36px; height: 3px; background: var(--osb-red); vertical-align: middle; margin-right: 12px; }
@media (max-width: 1199px) { .three-slider .hero-three-text { width: 75%; } .three-slider .hero-three-text h2 { font-size: 54px; line-height: 60px; } }
@media (max-width: 991px) {
  .three-slider .featured-area { height: clamp(560px, 85vh, 720px); padding-top: 150px; }
  .three-slider .hero-three-text { width: 100%; }
  .three-slider .hero-three-text h2 { font-size: 42px; line-height: 48px; }
  .three-slider .featured-area::before { background: rgba(15,15,15,.72); }
}
@media (max-width: 575px) { .three-slider .hero-three-text h2 { font-size: 34px; line-height: 40px; } }

/* Tasmalar: buyuk kutuphane gorselleri ve kayan yazi seridi sayfayi yana genisletmesin */
html, body { overflow-x: hidden; }
.marquee { overflow: hidden; }
.cost-effective > img { width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 6px; }
.subscribe-img img { width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; }
.accordion-img figure img { width: 100%; height: 100%; object-fit: cover; }

/* Form bolumu: acik renkli santiye fotografi ustunde yazilar okunsun */
.design-your { position: relative; }
.design-your:before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(20,20,20,.88) 0%, rgba(20,20,20,.72) 100%); }
.design-your > .container { position: relative; z-index: 1; }
.osb-cta-desc { color: #e6e6e6; margin-top: 16px; max-width: 560px; }

/* Kirmizi callout zemininde kirmizi buton kayboluyordu */
.subscribe-section .theme-btn { position: static; transform: none; background: #fff; color: var(--osb-dark); }
.subscribe-section .theme-btn:hover { color: #fff; }
.subscribe-section .theme-btn.w-color { background: transparent; color: #fff; border: 2px solid #fff; }

/* Tema basliklari capitalize ediyor; Turkce "i" -> "I" bozuluyor, metni oldugu gibi goster */
.accordion .title, .blog-one h4, .services-one h4,
.mobile-nav ul li a, .navbar-links .sub-menu li a { text-transform: none; }

/* Aktif menu ogesi */
.navbar-links > li.active > a { color: var(--osb-red); }

/* DB'den gelen mobil menu */
.mobile-nav .osb-mobile-list { list-style: none; padding: 0; margin: 0; }
.osb-mobile-contact { margin-top: 24px; display: flex; flex-direction: column; gap: 8px; }
.osb-mobile-contact a { color: #fff; font-weight: 600; }
.osb-mobile-contact i { color: var(--osb-red); margin-right: 6px; }

/* Hizmet kartlarinda uzun aciklama tasmasin */
.services-one p { display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }

/* Hakkimizda maddeleri */
.osb-points { list-style: none; padding: 0; margin: 24px 0 0; }
.osb-points li { position: relative; padding-left: 30px; margin-bottom: 12px; font-weight: 600; color: var(--osb-dark); }
.osb-points li:before { content: "\f00c"; font-family: "Font Awesome 6 Free"; font-weight: 900; position: absolute; left: 0; top: 1px; color: var(--osb-red); }
.osb-about-img img { width: 100%; border-radius: 6px; object-fit: cover; aspect-ratio: 4 / 3; }

/* Detay sayfalari (hizmet / proje / blog) */
.osb-detail figure img { width: 100%; border-radius: 6px; object-fit: cover; max-height: 520px; }
.osb-detail h2 { margin: 28px 0 16px; font-weight: 700; }
.osb-side h3, .osb-detail .osb-body h3 { font-weight: 700; }
.osb-side--cta p { color: #cfcfcf; }
.osb-detail .osb-body { font-size: 17px; line-height: 1.8; color: #444; }
.osb-detail .osb-body h3 { font-size: 24px; margin: 28px 0 12px; color: var(--osb-dark); }
.osb-detail .osb-body ul { padding-left: 20px; margin-bottom: 18px; }
.osb-detail .osb-body li { margin-bottom: 6px; list-style: disc; }
.osb-detail .osb-body p { margin-bottom: 16px; }
.osb-meta { display: flex; gap: 22px; flex-wrap: wrap; color: #777; margin-top: 18px; font-size: 15px; }
.osb-meta i { color: var(--osb-red); margin-right: 6px; }
.osb-side { background: #f5f5f5; padding: 30px; border-radius: 6px; margin-bottom: 30px; }
.osb-side h3 { font-size: 22px; margin-bottom: 18px; padding-bottom: 12px; border-bottom: 2px solid var(--osb-red); }
.osb-side ul { list-style: none; padding: 0; margin: 0; }
.osb-side ul li a { display: block; padding: 10px 0; border-bottom: 1px solid #e2e2e2; color: var(--osb-dark); font-weight: 600; }
.osb-side ul li a:hover { color: var(--osb-red); padding-left: 6px; transition: .2s; }
.osb-side ul li a i { color: var(--osb-red); margin-right: 8px; }
.osb-side--cta { background: var(--osb-dark); color: #ddd; }
.osb-side--cta h3 { color: #fff; }
.osb-side--cta .osb-phone { display: block; color: #fff; font-size: 22px; font-weight: 700; margin: 14px 0 18px; }
.osb-proj-meta li { display: flex; justify-content: space-between; gap: 10px; padding: 10px 0; border-bottom: 1px solid #e2e2e2; }
.osb-proj-meta li span { color: #777; }

/* Iletisim */
.osb-contact-list { margin-top: 30px; }
.osb-contact-item { display: flex; gap: 18px; align-items: flex-start; margin-bottom: 24px; }
.osb-contact-item i { flex: 0 0 54px; height: 54px; border-radius: 50%; background: var(--osb-red); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 20px; }
.osb-contact-item h5 { margin-bottom: 4px; }
.osb-contact-item a, .osb-contact-item p { color: #444; display: block; margin: 0; }
.osb-map iframe { width: 100%; height: 420px; border: 0; display: block; }
/* Tema form stili koyu zemin icin (beyaz kenarlik/yazi); iletisim sayfasinda beyaz zeminde kayboluyordu */
.contact-form.meet-experts { background: var(--osb-dark); padding: 40px; border-radius: 6px; }
@media (max-width: 575px) { .contact-form.meet-experts { padding: 26px 20px; } }
.osb-form-msg { margin-top: 14px; font-weight: 600; color: #fff; }
.osb-form-msg.ok { color: #6ee08f; }
.osb-form-msg.err { color: #ff8a85; }
.osb-hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; overflow: hidden; }
.meet-experts select { width: 100%; height: 60px; padding: 0 20px; margin-bottom: 20px; background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.55); }
.meet-experts select option { color: #2b2a29; }