/* BY Proje Mühendislik - corporate layout (light), generated pages: see olustur.py */
:root {
  --koyu: #1b1f27; --koyu-2: #2a2f39; --zemin: #ffffff; --zemin-2: #f5f6f8; --metin: #23262d; --soluk: #6f7682;
  --cizgi: #e6e8ec; --vurgu: #26406b; --vurgu-koyu: #1b2f52;
  --kenar: clamp(18px, 5vw, 80px); --genis: 1240px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { background: var(--zemin); color: var(--metin); font-family: "Montserrat", "Segoe UI", Arial, sans-serif; font-weight: 300;
  line-height: 1.65; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-weight: 300; line-height: 1.15; letter-spacing: .005em; }
h2 { font-size: clamp(26px, 3vw, 38px); margin-bottom: 28px; }
h3 { font-size: 18px; font-weight: 500; }
.kap { max-width: var(--genis); margin: 0 auto; padding: 0 var(--kenar); }
.bolum { padding: clamp(64px, 9vw, 120px) 0; }
.bolum.ust-bosluksuz { padding-top: 24px; }
.bolum.acik { background: var(--zemin-2); }
.bolum.koyu { background: var(--zemin-2); }
.ust-yazi { font-size: 12px; letter-spacing: .32em; text-transform: uppercase; color: var(--vurgu); margin-bottom: 14px; font-weight: 500; }
.dipnot { font-size: 13px; color: var(--soluk); margin-top: 14px; }

/* links / buttons */
.cizgili { display: inline-flex; align-items: center; gap: 16px; font-size: 13px; font-weight: 600; letter-spacing: .14em;
  text-transform: uppercase; color: var(--vurgu-koyu); }
.cizgili::after { content: ""; width: 56px; height: 1px; background: currentColor; transition: width .3s; }
.cizgili:hover::after { width: 84px; }
.dugme { display: inline-block; background: var(--koyu); color: #fff; border: 1px solid var(--koyu); padding: 14px 26px;
  font: 500 12px/1 "Montserrat", sans-serif; letter-spacing: .14em; text-transform: uppercase; cursor: pointer; transition: background .2s, color .2s; }
.dugme:hover { background: var(--vurgu-koyu); border-color: var(--vurgu-koyu); }
.dugme.ikincil { background: transparent; color: var(--koyu); }
.dugme.ikincil:hover { background: var(--koyu); color: #fff; }

/* header: transparent over the hero on the home page, white elsewhere and after scrolling */
.ust { position: fixed; inset: 0 0 auto 0; z-index: 60; display: flex; align-items: center; justify-content: space-between;
  padding: 22px var(--kenar); transition: background .3s, padding .3s, box-shadow .3s; color: #fff; }
.dolu-ust .ust, .ust.dolu { background: rgba(255,255,255,.97); color: var(--metin); padding-top: 14px; padding-bottom: 14px;
  box-shadow: 0 1px 0 var(--cizgi); }
.dolu-ust main { padding-top: 108px; }
.logo { display: flex; align-items: center; height: 84px; transition: height .3s; }
.logo img { height: 100%; width: auto; }
.dolu-ust .logo, .ust.dolu .logo { height: 68px; }
.logo .logo-koyu, .logo .logo-yazi { display: none; }
.dolu-ust .logo .logo-acik, .ust.dolu .logo .logo-acik { display: none; }
.dolu-ust .logo .logo-koyu, .ust.dolu .logo .logo-koyu { display: block; }
.logo.yazi img { display: none !important; }
.logo.yazi .logo-yazi { display: flex; }
.logo-yazi { flex-direction: column; font-weight: 600; font-size: 20px; letter-spacing: .12em; line-height: 1; }
.logo-yazi small { font-size: 9px; font-weight: 500; letter-spacing: .36em; margin-top: 5px; }
.logo-yazi.koyu { display: flex; color: var(--metin); margin-bottom: 16px; }
.menu { display: flex; align-items: center; gap: 30px; }
.menu a { font-size: 14px; font-weight: 500; letter-spacing: .04em; opacity: .9; transition: opacity .2s, color .2s; }
.menu a:hover, .menu a.aktif { opacity: 1; color: var(--vurgu); }
/* koyu slaytın üstünde (şeffaf menü) etkin bağlantı beyaz ve altı çizili kalır */
.seffaf-ust .ust:not(.dolu) .menu a.aktif, .seffaf-ust .ust:not(.dolu) .menu a:hover { color: #fff; text-decoration: underline; text-underline-offset: 6px; }
.menu .dil { font-size: 12px; letter-spacing: .14em; text-transform: uppercase; padding-left: 26px; border-left: 1px solid currentColor; }
.menu .menu-teklif { border: 1px solid currentColor; padding: 9px 18px; font-size: 12px; letter-spacing: .16em; text-transform: uppercase; }
.menu-dugme { display: none; background: none; border: 0; width: 30px; height: 22px; position: relative; cursor: pointer; color: inherit; }
.menu-dugme span { position: absolute; left: 0; right: 0; height: 2px; background: currentColor; transition: transform .3s, top .3s; }
.menu-dugme span:first-child { top: 5px; } .menu-dugme span:last-child { top: 15px; }

/* hero slider */
.slayt-alani { position: relative; height: 100vh; min-height: 560px; background: var(--koyu); overflow: hidden; color: #fff; }
.slayt { position: absolute; inset: 0; opacity: 0; transition: opacity 1.1s ease; visibility: hidden; }
.slayt.aktif { opacity: 1; visibility: visible; }
.slayt-foto { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transform: scale(1.06); transition: transform 7s ease; }
.slayt.aktif .slayt-foto { transform: scale(1); }
.slayt::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(11,13,17,.15) 0%, rgba(11,13,17,.25) 45%, rgba(11,13,17,.78) 100%); }
.slayt.cizimli { background: #1b1f27; }
.slayt-cizim { position: absolute; left: 0; top: 50%; transform: translateY(-46%); width: 64%; opacity: .95; }
.slayt.cizimli::after { background: linear-gradient(90deg, transparent 40%, rgba(11,13,17,.85) 72%); }
.slayt-yazi { position: absolute; z-index: 2; right: var(--kenar); bottom: 18%; width: min(520px, 86vw); text-align: right; }
.slayt-yazi .ust-yazi { color: #fff; opacity: .85; }
.slayt-baslik { font-size: clamp(30px, 4vw, 56px); font-weight: 300; margin-bottom: 18px; letter-spacing: .01em; }
.slayt-yazi p { color: #dfe2e8; margin-bottom: 26px; }
.slayt-yazi .cizgili { color: #fff; }
.slayt-kontrol { position: absolute; z-index: 3; left: var(--kenar); bottom: 40px; display: flex; align-items: center; gap: 18px; }
.slayt-kontrol .ok { background: none; border: 1px solid rgba(255,255,255,.5); color: #fff; width: 40px; height: 40px; font-size: 20px; cursor: pointer; }
.noktalar { display: flex; gap: 10px; }
.nokta { width: 34px; height: 2px; border: 0; background: rgba(255,255,255,.35); cursor: pointer; padding: 0; transition: background .3s; }
.nokta.aktif { background: #fff; }

/* introduction */
.tanitim-izgara { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(32px, 6vw, 96px); align-items: center; }
.cizgili-baslik { display: flex; align-items: center; gap: 22px; }
.cizgili-baslik::after { content: ""; flex: 0 0 64px; height: 1px; background: var(--metin); }
.tanitim p { color: #4a505c; margin-bottom: 18px; max-width: 560px; }
.tanitim .cizgili { margin-top: 18px; }
.tanitim-gorsel { aspect-ratio: 4/5; overflow: hidden; background: var(--zemin-2); }
.tanitim-gorsel img { width: 100%; height: 100%; object-fit: cover; }
.tanitim-gorsel.cizimli { background: var(--koyu); }
.tanitim-gorsel.cizimli img { object-fit: contain; }

/* figures */
.sayaclar { padding: 56px 0; border-top: 1px solid var(--cizgi); border-bottom: 1px solid var(--cizgi); }
.sayac-izgara { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 24px; text-align: center; }
.sayac b { font-size: clamp(34px, 4vw, 52px); font-weight: 500; }
.sayac .ek { font-size: clamp(28px, 3vw, 40px); font-weight: 500; }
.sayac small { display: block; font-size: 12px; letter-spacing: .24em; text-transform: uppercase; color: var(--soluk); }

/* service tiles */
.hizmet-seridi { display: grid; grid-template-columns: repeat(4, 1fr); background: var(--koyu); }
.hizmet-kart { display: flex; flex-direction: column; border-right: 1px solid rgba(255,255,255,.08); color: #fff; }
.hk-gorsel { display: block; position: relative; aspect-ratio: 4/3; overflow: hidden; background: #1b1f27; }
.hk-gorsel img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s ease, opacity .4s; opacity: .85; }
.hizmet-kart.cizimli .hk-gorsel img { object-fit: contain; opacity: .55; }
.hizmet-kart:hover .hk-gorsel img { transform: scale(1.05); opacity: 1; }
.hk-yazi { display: block; padding: 22px 28px 30px; border-top: 1px solid rgba(255,255,255,.08); }
.hk-yazi h3 { font-size: clamp(18px, 1.5vw, 22px); font-weight: 400; margin-bottom: 8px; }
.hk-yazi small { font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: #cfd3da; }

/* contact block */
.il-kartlar { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 8px; }
.il-kart { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 10px; padding: 34px 20px; border: 1px solid var(--cizgi); }
.il-kart svg { width: 34px; height: 34px; fill: none; stroke: var(--metin); stroke-width: 1.4; stroke-linejoin: round; stroke-linecap: round; margin-bottom: 6px; }
.il-etiket { font-size: 11px; letter-spacing: .26em; text-transform: uppercase; color: var(--soluk); }
.il-kart a:hover { color: var(--vurgu-koyu); }

/* profiles, logos */
.sunumlar { display: flex; flex-wrap: wrap; gap: 28px; }
.sunum { display: flex; flex-direction: column; align-items: center; gap: 10px; width: 150px; text-align: center; font-size: 13px; }
.sunum svg { width: 56px; height: 56px; fill: none; stroke: var(--metin); stroke-width: 1.3; }
.logolar h2 { margin-bottom: 36px; }
.serit { overflow: hidden; }
.serit ul { display: flex; gap: 72px; list-style: none; align-items: center; padding: 0 var(--kenar); flex-wrap: wrap; }
.serit.kayan ul { flex-wrap: nowrap; width: max-content; animation: kay 40s linear infinite; }
.serit img { height: 54px; width: auto; filter: grayscale(1); opacity: .7; transition: filter .3s, opacity .3s; }
.serit img:hover { filter: none; opacity: 1; }
@keyframes kay { to { transform: translateX(-50%); } }

/* inner page heading */
.sayfa-basi { padding: clamp(48px, 7vw, 96px) 0 clamp(32px, 4vw, 56px); border-bottom: 1px solid var(--cizgi); }
.sayfa-basi h1 { font-size: clamp(34px, 4.6vw, 58px); font-weight: 300; display: flex; align-items: center; gap: 28px; }
.sayfa-basi h1::after { content: ""; flex: 0 0 72px; height: 1px; background: var(--metin); }
.sayfa-alt { color: var(--soluk); margin-top: 14px; max-width: 640px; font-size: 17px; }
.metin-blok { max-width: 820px; }
.metin-blok p { font-size: 18px; color: #3f4552; margin-bottom: 18px; }

/* about */
.kalemler { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 40px 48px; }
.kalemler.iki { grid-template-columns: repeat(2, 1fr); }
.kalem .no, .surec .no { display: block; font-size: 13px; letter-spacing: .2em; color: var(--vurgu); margin-bottom: 10px; }
.kalem h3, .surec h3 { margin-bottom: 10px; }
.kalem p, .surec p { color: var(--soluk); }
.surec { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; counter-reset: s; }
.surec li { border-top: 1px solid var(--metin); padding-top: 22px; }
.alanlar { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--cizgi); }
.alanlar li { padding: 18px 0; border-bottom: 1px solid var(--cizgi); font-size: 17px; }
.alanlar li::before { content: "—"; color: var(--vurgu); margin-right: 12px; }

/* projects */
.filtre { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 32px; }
.filtre button { background: none; border: 1px solid var(--cizgi); padding: 9px 18px; font: 400 13px "Montserrat", sans-serif; letter-spacing: .06em; cursor: pointer; }
.filtre button.aktif, .filtre button:hover { background: var(--koyu); color: #fff; border-color: var(--koyu); }
.proje-izgara { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.proje-kart { position: relative; aspect-ratio: 4/3; overflow: hidden; background: var(--zemin-2); }
.proje-kart.gizli { display: none; }
.proje-kart img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s ease; }
.proje-kart:hover img { transform: scale(1.05); }
.pk-yazi { position: absolute; inset: auto 0 0 0; padding: 40px 22px 18px; color: #fff; background: linear-gradient(transparent, rgba(11,13,17,.8)); }
.pk-yazi small { font-size: 11px; letter-spacing: .2em; text-transform: uppercase; color: #e8ebf0; }
.proje-galeri { display: grid; gap: 18px; }
.galeri-oge img { width: 100%; }
.proje-alt { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 20px; margin-top: 40px; padding-top: 28px; border-top: 1px solid var(--cizgi); }
.galeri { position: fixed; inset: 0; z-index: 90; background: rgba(8,9,12,.96); display: none; align-items: center; justify-content: center; }
.galeri.acik { display: flex; }
.galeri img { max-width: 92vw; max-height: 88vh; }
.galeri button { position: absolute; background: none; border: 0; color: #fff; font-size: 40px; cursor: pointer; padding: 12px 18px; }
.galeri-kapat { top: 12px; right: 16px; } .galeri-geri { left: 10px; } .galeri-ileri { right: 10px; }

/* contact page */
.teklif-form { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 28px; max-width: 920px; }
.alan { display: flex; flex-direction: column; gap: 8px; }
.alan-tam { grid-column: 1 / -1; }
.alan label { font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--soluk); }
.alan input, .alan select, .alan textarea { font: 300 16px "Montserrat", sans-serif; padding: 13px 14px; border: 1px solid #d5d2ca; background: #fff; color: var(--metin); border-radius: 0; }
.alan input:focus, .alan select:focus, .alan textarea:focus { outline: 2px solid var(--vurgu); outline-offset: -1px; }
.form-uyari { grid-column: 1 / -1; color: #a33; }
.form-dugmeler { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 14px; }
.teklif-form .dipnot { grid-column: 1 / -1; margin-top: 0; }
.sss { max-width: 880px; border-top: 1px solid var(--cizgi); }
.sss details { border-bottom: 1px solid var(--cizgi); }
.sss summary { cursor: pointer; padding: 22px 36px 22px 0; font-size: 18px; list-style: none; position: relative; }
.sss summary::-webkit-details-marker { display: none; }
.sss summary::after { content: "+"; position: absolute; right: 4px; top: 18px; font-size: 24px; color: var(--vurgu); transition: transform .3s; }
.sss details[open] summary::after { transform: rotate(45deg); }
.sss details p { padding: 0 0 22px; color: #4a505c; max-width: 760px; }

/* footer */
.alt { background: var(--zemin-2); color: var(--soluk); padding: 72px 0 0; border-top: 1px solid var(--cizgi); }
.alt-ic { max-width: var(--genis); margin: 0 auto; padding: 0 var(--kenar) 48px; display: grid; grid-template-columns: 1.6fr 1fr 1.2fr; gap: 48px; }
.alt-marka p { max-width: 420px; font-size: 14px; }
.alt-menu, .alt-iletisim { display: flex; flex-direction: column; gap: 10px; font-size: 14px; }
.alt a:hover { color: var(--vurgu); }
.alt-satir { border-top: 1px solid var(--cizgi); padding: 22px var(--kenar); text-align: center; font-size: 12px; color: #7d8390; }
.wp { position: fixed; right: 22px; bottom: 22px; z-index: 70; width: 54px; height: 54px; border-radius: 50%; background: #25d366; color: #fff;
  display: flex; align-items: center; justify-content: center; box-shadow: 0 6px 18px rgba(0,0,0,.22); }

/* reveal on scroll */
.gorun { opacity: 0; transform: translateY(24px); transition: opacity .8s ease, transform .8s ease; }
.gorun.gorundu { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .gorun { opacity: 1; transform: none; transition: none; }
  .slayt, .slayt-foto, .serit.kayan ul { transition: none; animation: none; }
}

/* responsive */
@media (max-width: 1100px) {
  .menu { position: fixed; inset: 0; flex-direction: column; justify-content: center; gap: 26px; background: var(--koyu); color: #fff;
    transform: translateX(100%); transition: transform .35s ease; }
  .menu a { font-size: 22px; }
  .menu .dil { border: 0; padding: 0; }
  .menu-acik .menu { transform: none; }
  .menu-dugme { display: block; z-index: 61; }
  .menu-acik .menu-dugme { color: #fff; }
  .menu-acik .menu-dugme span:first-child { top: 10px; transform: rotate(45deg); }
  .menu-acik .menu-dugme span:last-child { top: 10px; transform: rotate(-45deg); }
  .hizmet-seridi { grid-template-columns: repeat(2, 1fr); }
  .surec { grid-template-columns: repeat(2, 1fr); }
  .alanlar { grid-template-columns: repeat(2, 1fr); }
  .proje-izgara { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 760px) {
  .logo, .dolu-ust .logo, .ust.dolu .logo { height: 60px; }
  .tanitim-izgara, .il-kartlar, .kalemler.iki, .teklif-form, .alt-ic { grid-template-columns: 1fr; }
  .slayt-yazi { left: var(--kenar); right: var(--kenar); width: auto; text-align: left; bottom: 110px; }
  .slayt-cizim { width: 120%; left: -10%; top: 34%; }
  .slayt::after, .slayt.cizimli::after { background: linear-gradient(180deg, rgba(11,13,17,.2), rgba(11,13,17,.85) 70%); }
  .hizmet-seridi, .surec, .alanlar, .proje-izgara { grid-template-columns: 1fr; }
  .tanitim-gorsel { aspect-ratio: 4/3; }
}
@media (max-width: 380px) {
  .logo, .dolu-ust .logo, .ust.dolu .logo { height: 54px; }
}

section[id], [id="teklif"] { scroll-margin-top: 90px; }
@media (min-width: 1101px) { .dolu-ust .ust, .ust.dolu { backdrop-filter: blur(8px); } }

/* KVKK consent + notice */
.onay { display: flex; gap: 12px; align-items: flex-start; font-size: 14px; color: var(--soluk); }
.onay input { margin-top: 4px; width: 18px; height: 18px; accent-color: var(--vurgu); flex: none; }
.kvkk-ac { background: none; border: 0; padding: 0; font: inherit; color: var(--vurgu); text-decoration: underline; cursor: pointer; }
.alt-satir .kvkk-ac { color: inherit; }
dialog.kvkk { max-width: 720px; width: calc(100% - 32px); max-height: 86vh; margin: auto; border: 0; padding: 40px clamp(22px, 4vw, 48px); color: var(--metin); }
dialog.kvkk::backdrop { background: rgba(20,22,28,.55); }
dialog.kvkk h3 { font-size: 24px; margin-bottom: 18px; }
dialog.kvkk h4 { font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; margin: 18px 0 6px; }
dialog.kvkk p { font-size: 15px; color: #4a505c; }
.kvkk-kapat { position: absolute; top: 12px; right: 16px; background: none; border: 0; font-size: 30px; cursor: pointer; color: var(--metin); }