:root{
  --bg:#0b1220; --fg:#eaf1ff; --muted:#9fb0c9; --brand:#5aa2ff; --brand-2:#74b0ff; --card:#111827;
  --ring: rgba(90,162,255,.28);
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:Inter,system-ui,Segoe UI,Roboto,Arial,Helvetica,sans-serif;background:var(--bg);color:var(--fg);line-height:1.6}

/* Layout */
.container{max-width:1120px;margin:0 auto;padding:0 20px}
a{color:var(--brand);text-decoration:none}

/* NAV */
.nav{position:sticky;top:0;background:rgba(15,23,42,.6);backdrop-filter:blur(8px);border-bottom:1px solid rgba(255,255,255,.06)}
.nav.on-hero{position:absolute;top:0;left:0;right:0;background:transparent;border:0}
.nav .container{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.logo{display:flex;align-items:center;gap:8px;font-weight:800;color:#fff}
nav a{margin-left:14px}
nav .cta{padding:8px 12px;border:1px solid rgba(90,162,255,.35);border-radius:10px}

/* Buttons/badges */
.btn{display:inline-flex;gap:10px;align-items:center;justify-content:center;padding:12px 18px;border-radius:12px;
  font-weight:700;border:1px solid rgba(255,255,255,.12);background:linear-gradient(180deg, var(--brand), #0a5ee2);color:#fff;box-shadow:0 8px 22px rgba(10,115,255,.25)}
.btn.secondary{background:transparent;color:#d6e3ff;border-color:rgba(90,162,255,.35)}
.badges.row{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:8px}
.badge{display:inline-flex;gap:8px;align-items:center;padding:8px 12px;border-radius:999px;background:#0f172a;border:1px solid rgba(255,255,255,.06)}

/* HERO (full viewport) */
.hero-landing{position:relative;min-height:100svh;display:grid;place-items:center;overflow:hidden;color:#eaf1ff;
  background:linear-gradient(180deg,#0b1220 0%,#0e1629 60%,#0b1220 100%);}
.hero-bg{position:absolute;inset:-10% -10% -20% -10%;
  background:
    radial-gradient(50% 40% at 20% 10%, rgba(90,162,255,.25), transparent 60%),
    radial-gradient(35% 30% at 80% 20%, rgba(19,185,129,.22), transparent 60%),
    radial-gradient(25% 20% at 50% 80%, rgba(148, 163, 255, .18), transparent 60%);
  filter:blur(60px);transform:translateZ(0)}
.hero-inner{position:relative;text-align:center;padding:24px;max-width:920px;margin-inline:auto}
.hero-inner h1{font-size:clamp(42px,8.5vw,84px);line-height:1.02;margin:0 0 8px;letter-spacing:-.02em;font-weight:800;
  text-shadow:0 10px 40px rgba(90,162,255,.25);animation:hero-pop .7s cubic-bezier(.2,.8,.2,1) both}
.hero-inner .sub{font-size:clamp(16px,2.8vw,22px);opacity:.9;margin:0 0 6px;animation:hero-fade .8s .05s both}
.hero-inner .lead{font-size:clamp(16px,2.2vw,18px);color:#b6c3db;margin:.3rem 0 1rem;animation:hero-fade .9s .12s both}
.lead-form{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin:8px 0 14px;animation:hero-fade .9s .18s both}
.lead-form input{width:min(420px,80vw);padding:12px 14px;border-radius:12px;border:1px solid rgba(255,255,255,.18);background:rgba(17,25,40,.6);color:#eaf1ff}
.lead-form input::placeholder{color:#9fb0c9}
.hero-scroll{position:absolute;bottom:18px;left:50%;transform:translateX(-50%);opacity:.8}

/* Keyframes */
@keyframes hero-pop{from{transform:translateY(16px) scale(.98);opacity:0}to{transform:none;opacity:1}}
@keyframes hero-fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* Sections */
.section{padding:48px 0;content-visibility:auto;contain-intrinsic-size:600px}
h2{font-size:clamp(22px,3.4vw,32px);margin:0 0 12px}
.grid{display:grid;gap:18px}
.grid-3{grid-template-columns:repeat(3,1fr)} @media(max-width:900px){.grid-3{grid-template-columns:1fr}}
.card{background:#0f172a;border:1px solid rgba(255,255,255,.06);border-radius:16px;padding:20px;box-shadow:0 6px 18px rgba(0,0,0,.18)}
.list{margin:10px 0 0;padding:0 0 0 18px}
.arrow::after{content:" →"}


/* --- STEP baloncukları (düzgün yuvarlak + parlama) --- */
/* her adım satırı */
.step {
  display: flex;
  align-items: center;   /* balon ve yazıyı dikey ortalar */
  margin-bottom: 30px;   /* adımlar arası boşluk */
}

/* baloncuk */
.step-number {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  min-width: 36px;
  min-height: 36px;
  border-radius: 50%;
  margin-left: -38px;   /* çizgiye oturtma */
  font-weight: 700;
  font-size: 16px;
  color: #fff;

  background: linear-gradient(180deg, #4ea2ff, #0a5ee2);
  box-shadow:
    0 6px 14px rgba(10,115,255,.35),
    inset 0 0 0 1px rgba(255,255,255,.16),
    inset 0 -6px 10px rgba(0,0,0,.25);

  text-shadow:
    0 1px 2px rgba(0,0,0,.4),
    0 0 6px rgba(148,190,255,.5);
}

/* baloncuk içi parlaması */
.step-number::after {
  content: "";
  position: absolute;
  inset: 2px;
  border-radius: 50%;
  background: radial-gradient(80% 80% at 30% 30%, rgba(255,255,255,.35), transparent 60%);
  pointer-events: none;
}

/* yazı alanı */
.step-content {
  margin-left: 15px;     /* baloncuktan boşluk */
}

/* dikey çizgi */
.steps {
  background: linear-gradient(180deg, rgba(74,130,220,.8), rgba(36,58,92,.6));
  background-repeat: no-repeat;
  background-position: 18.5px 0;
  background-size: 2px 100%;
}

/* mobil uyum */
@media (max-width: 768px) {
  .step-number {
    margin-left: -98px;
  }
  .steps {
    background-position: 14px 0;
  }
}




/* Stats & gallery */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
@media(max-width:900px){.stats{grid-template-columns:1fr 1fr}}
.stat{background:#0f172a;border:1px solid rgba(255,255,255,.06);border-radius:16px;padding:18px;text-align:center}
.stat span{display:block;font-weight:800;font-size:clamp(22px,3.6vw,30px)}

/* GALERİ */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.gallery figure {
  background: #111827; /* koyu arka plan */
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 6px 18px rgba(0,0,0,0.4);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
  text-align: center;
}

.gallery figure:hover {
  transform: translateY(-8px) scale(1.03);
  box-shadow: 0 10px 25px rgba(0,0,0,0.6);
}

.gallery img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.gallery figure:hover img {
  transform: scale(1.1);
}

.gallery figcaption {
  padding: 1rem;
  font-size: 1rem;
  font-weight: 500;
  color: #f3f4f6;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(6px);
}


/* Blog */
.blog-list{display:grid;gap:8px}

/* Footer */
footer{padding:28px 0;color:#9fb0c9}
footer .container{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}

/* Reveal Animations (scroll ile) */
.reveal{opacity:0;transform:translateY(16px);will-change:transform,opacity}
.reveal[data-reveal="right"]{transform:translateX(-16px)}
.reveal-in{opacity:1;transform:none;transition:transform .7s cubic-bezier(.2,.7,.2,1),opacity .7s}
.reveal-stagger .reveal{transition-delay:calc(var(--reveal-index, 0) * 90ms)}
.reveal[data-reveal-delay]{transition-delay: calc(attr(data-reveal-delay number, 0ms) * 1ms)}

/* A11y / SEO sinyali */
:focus-visible{outline:3px solid var(--brand);outline-offset:2px}
img{aspect-ratio:auto;display:block}

/* Reduced motion */
@media (prefers-reduced-motion: reduce){
  .reveal,.reveal-in{opacity:1;transform:none;transition:none}
}

/* --- Scroll düğmesi her zaman üstte ve erişilebilir --- */
.hero-landing{ position:relative; isolation:isolate; padding-bottom:64px; } /* ekstra alt boşluk */
.hero-landing::after{ /* fade overlay (önceden eklemiştik) */ pointer-events:none; }

.hero-scroll{
  position:absolute;
  left:50%; transform:translateX(-50%);
  bottom:24px;                       /* biraz yukarı al */
  z-index:3;                         /* fade'in üstünde */
  display:inline-flex; align-items:center; gap:10px;
  padding:10px 14px; border-radius:999px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  color:#d6e3ff; text-decoration:none;
  backdrop-filter:blur(6px);
  transition:transform .2s ease, background .2s ease, opacity .2s ease;
}
.hero-scroll:hover{ background:rgba(255,255,255,.12); transform:translateX(-50%) translateY(-2px); }
.hero-scroll:active{ transform:translateX(-50%) translateY(0); }

/* küçük ok animasyonu (opsiyonel) */
.hero-scroll::after{
  content:"▾"; font-size:14px; opacity:.9;
  animation:chev 1.4s ease-in-out infinite;
}
@keyframes chev{ 0%,100%{ transform:translateY(-2px) } 50%{ transform:translateY(2px) } }

/* global smooth scroll (CSS tarafı) */
html{ scroll-behavior:smooth; }

/* ====== HERO mobil düzeltmeleri ====== */
@media (max-width: 900px){
  .hero-landing{padding: calc(env(safe-area-inset-top) + 56px) 16px 72px}
  .hero-inner h1{font-size: clamp(34px, 10vw, 46px)}
  .hero-inner .sub{font-size: clamp(14px, 4vw, 18px)}
  .hero-inner .lead{font-size: 15px}
  .lead-form{gap:8px}
  .lead-form input{width:100%}
  .btn{padding:10px 14px}
  .badges.row{justify-content:flex-start}
}

/* ====== HİZMET kartları, grid ====== */
@media (max-width: 900px){
  .grid-3{grid-template-columns:1fr}
  .card{padding:16px}
}

/* ====== Timeline mobil: daha dar balon + çizgi ortalama ====== */
@media (max-width: 700px){
  .steps{ background-position: 30px 0; background-size: 2px 100%; }
  .step{ padding-left: 72px }
  .step::before{ left:14px; width:28px; height:28px; font-size:.95rem }
}

/* ====== Hero scroll butonu güvenli alan ve z-index ====== */
.hero-scroll{ bottom: max(24px, calc(env(safe-area-inset-bottom) + 12px)); z-index:60 }


/* ==== GLOBAL FIXES ==== */

/* NAV her zaman üstte kalsın */
.nav{ z-index: 999; }

/* Service sayfasında sticky asidelerin ebeveyninde content-visibility kapat */
.service .section.service-body{ content-visibility: visible; contain-intrinsic-size: auto; }

/* Service timeline: style.css’teki global .steps/.step::before etkilerini nötrle */
.service .steps{ list-style: none; }
.service .step::before{ content: none !important; }

/* Desktop ve mobilde aside’in taşmasını engelle, sticky güvenli alan */
.service .sidebar .card.sticky{ top: calc(56px + env(safe-area-inset-top)); }
@media (max-width: 1000px){
  /* mobilde sticky’yi kapat; doğal akış */
  .service .sidebar .card.sticky{ position: static; top: auto; }
}

/* Mobil nav paneli daima içerik üstünde */
body.nav-open #primary-nav{ z-index: 2000; }

/* Anchor/scroll offset (iç linklere tıklayınca başlık navbar altına girmesin) */
.service h2, .service h3{ scroll-margin-top: 76px; }

/* Kartlar kazara iç içe girerse görsel etkisini sıfırla */
.card .card{
  border: 0; padding: 0; background: transparent; box-shadow: none;
}

/* Sidebar düzeni net olsun */
.sidebar{ display:flex; flex-direction:column; gap:14px; }
.sidebar .sep{ border:0; border-top:1px solid rgba(255,255,255,.06); margin:12px 0; }

/* Sticky kartın tepe boşluğu (nav yüksekliği kadar) */
.service .sidebar .card.sticky{ position: sticky; top: calc(56px + env(safe-area-inset-top)); }
@media (max-width: 1000px){
  .service .sidebar .card.sticky{ position: static; top:auto; }
}

/* ===========================
   FAQ (Accordion) – Trakya Fiber
   =========================== */
.faq-section{ padding:24px 0 }
.faq-list{ display:grid; gap:10px }

/* Kutu */
.faq-item{
  background:#0f172a;
  border:1px solid rgba(255,255,255,.06);
  border-radius:12px;
  padding:10px 12px;
  transition: border-color .3s ease, box-shadow .3s ease, background .3s ease;
  overflow:hidden;
}
.faq-item[open]{
  border-color: rgba(78,162,255,.30);               /* mavi vurgu */
  box-shadow: 0 0 12px rgba(78,162,255,.15);
  background: linear-gradient(180deg, rgba(255,255,255,.02), rgba(0,0,0,.06)), #0f172a;
}

/* Başlık (summary) */
.faq-item summary{
  cursor:pointer;
  font-weight:700;
  list-style:none;
  position:relative;
  padding-right:32px;                                 /* ok ikonu alanı */
  outline:none;
}
.faq-item summary::-webkit-details-marker{ display:none }

/* Ok ikonu */
.faq-item summary::after{
  content:"";
  position:absolute; right:6px; top:50%;
  width:14px; height:14px;
  border:2px solid rgba(255,255,255,.65);
  border-left:0; border-top:0;
  transform: translateY(-50%) rotate(45deg);
  transition: transform .25s ease, border-color .25s ease;
}
.faq-item[open] summary::after{
  transform: translateY(-50%) rotate(225deg);
  border-color: var(--brand, #5aa2ff);
}

/* İçerik */
.faq-item p{
  margin:8px 0 0;
  color:#cdd6e6;
  line-height:1.6;
}

/* Hover / focus durumları */
.faq-item:hover{ border-color: rgba(255,255,255,.14) }
.faq-item summary:focus-visible{
  outline:3px solid var(--brand, #5aa2ff);
  outline-offset:2px;
  border-radius:8px;
}

/* Küçük ekran iyileştirme */
@media (max-width: 700px){
  .faq-item{ padding:10px 12px }
  .faq-item summary{ padding-right:28px }
  .faq-item summary::after{ right:4px }
}

/* Reduced motion: animasyonları kapat */
@media (prefers-reduced-motion: reduce){
  .faq-item,
  .faq-item summary::after{
    transition:none !important;
  }
}
/* Sadece bu sayfada (no-sticky-aside sınıfı varsa) aside yapışık olmasın */
.no-sticky-aside .sidebar .card.sticky{
  position: static !important;
  top: auto !important;
}

/* Eğer önceki adımda z-index eklediysek, bu sayfada nötrle */
.no-sticky-aside .sidebar .card.sticky{ z-index: auto; }
.no-sticky-aside .sidebar .card{ z-index: auto; }

/* ——— İLETİŞİM FORMU REFINES ——— */

/* Grid oranı ve boşluklar */
.grid-2{grid-template-columns:1.1fr .9fr;gap:22px}
@media (max-width: 900px){.grid-2{grid-template-columns:1fr}}

/* Kartlar: yumuşak gölge ve kenar çizgisi */
.card{
  background:var(--card);
  border:1px solid rgba(255,255,255,.08);
  border-radius:16px;
  box-shadow:0 8px 24px rgba(0,0,0,.18);
}

/* Form kutusu */
.contact-form{
  padding:20px;
  display:grid; gap:14px;
}

/* Etiket tipografisi */
.contact-form label{
  display:grid; gap:8px;
  font-weight:700; font-size:.96rem;
  color:#dde6ff;
}

/* Alanların varsayılan hâli (kırmızı yok) */
.contact-form input,
.contact-form textarea{
  width:100%;
  padding:12px 14px;
  border-radius:12px;
  background:rgba(17,25,40,.65);
  border:1px solid rgba(255,255,255,.12);
  color:var(--fg);
  transition:border-color .15s ease, box-shadow .15s ease, background .15s ease;
}
.contact-form input{height:46px}
.contact-form textarea{min-height:140px;resize:vertical}
.contact-form input::placeholder,
.contact-form textarea::placeholder{color:var(--muted)}

/* Focus durumu */
.contact-form input:focus,
.contact-form textarea:focus{
  outline:none;
  border-color:rgba(90,162,255,.45);
  box-shadow:0 0 0 3px var(--ring);
  background:rgba(17,25,40,.75);
}

/* Hata göstergesini yalnızca gönderim denendiğinde aç */
.contact-form.was-submitted input:invalid,
.contact-form.was-submitted textarea:invalid{
  border-color:#ff4d4f !important;
  box-shadow:0 0 0 3px rgba(255,77,79,.18) !important;
}

/* Başarılı/uyarı kartları */
.card.success,.card.error{
  padding:14px 16px;
  border-left:4px solid transparent;
}
.card.success{border-left-color:#15b77e}
.card.error{border-left-color:#ff4d4f}

/* Sağ “Diğer İletişim” kutusunu nefes aldır */
.grid-2 > .card h3{margin:4px 0 10px}
.grid-2 > .card p{margin:0; line-height:1.65}

/* Buton: hover/active daha net */
.contact-form .btn{
  height:46px; padding:0 18px; font-weight:800;
  box-shadow:0 10px 22px rgba(10,115,255,.22);
}
.contact-form .btn:hover{transform:translateY(-1px)}
.contact-form .btn:active{transform:none}
@media (max-width:900px){.contact-form .btn{width:100%}}

/* Alt bilgilendirme yazısı */
.contact-form .muted{margin:2px 0 0; color:var(--muted); font-size:.9rem}

/* Footer hizalamasını biraz ortaya çek (opsiyonel) */
footer .container{align-items:center}
/* JS çalışmazsa içerik gizlenmesin */
.no-js .reveal{opacity:1 !important; transform:none !important}