/* =====================================================================
   ProjeVitrini — ziyaretçi sayfaları
   Görsel dil: MegaOne "AI Agency" demosu (lacivert / mavi, Oswald başlıklar, numaralı kartlar,
   filtreli proje ızgarası) — sade, hızlı ve bağımsız olarak yeniden yazıldı (jQuery / eklenti yok).
   Telefon öncelikli: önce dar ekran, sonra @media (min-width) ile genişler.
   ===================================================================== */

:root {
    --gece: #0a0d2c;
    --lacivert: #1f206a;
    --lacivert-2: #272a86;
    --mavi: #3089ed;
    --mavi-koyu: #1f6fd0;
    --mavi-acik: #8fc1f7;
    --mor: #6a3df0;
    --metin: #0a0d2c;
    --metin-soluk: #5b6483;
    --zemin: #ffffff;
    --zemin-2: #f4f6fb;
    --cizgi: #e3e7f1;
    --beyaz-soluk: rgba(255, 255, 255, .72);
    --baslik-font: 'Oswald', 'Arial Narrow', 'Segoe UI', sans-serif;
    --govde-font: 'Roboto', system-ui, -apple-system, 'Segoe UI', sans-serif;
    --kose: 18px;
    --kose-kucuk: 12px;
    --golge: 0 24px 60px -24px rgba(10, 13, 44, .45);
    --golge-hafif: 0 10px 30px -14px rgba(10, 13, 44, .25);
    --kenar-bosluk: 16px;
    --ust-serit-yukseklik: 72px;
}

/* ============================ Temel ============================ */

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: var(--ust-serit-yukseklik); -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    font-family: var(--govde-font);
    font-size: 17px;
    line-height: 1.65;
    color: var(--metin);
    background: var(--zemin);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4 { font-family: var(--baslik-font); font-weight: 600; line-height: 1.1; margin: 0; letter-spacing: .01em; }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

:focus-visible { outline: 3px solid var(--mavi); outline-offset: 3px; border-radius: 4px; }

.kapsayici { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 var(--kenar-bosluk); }

.atla {
    position: absolute; left: 12px; top: -60px; z-index: 200;
    background: var(--mavi); color: #fff; padding: 10px 16px; border-radius: 8px; font-weight: 500;
}
.atla:focus { top: 12px; }

.gizli { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.bolum { padding: 80px 0; position: relative; overflow: hidden; }
@media (min-width: 992px) { .bolum { padding: 120px 0; } }

.bolum--koyu { background: var(--lacivert); color: #fff; }
.bolum--gece { background: var(--gece); color: #fff; }
.bolum--acik { background: var(--zemin-2); }

/* İki tonlu bölüm başlığı (temadaki "Our Recent / AI Based work" düzeni) */
.bolum-basligi { margin-bottom: 40px; }
.bolum-basligi__ust {
    display: block; font-family: var(--baslik-font); text-transform: uppercase; letter-spacing: .14em;
    font-size: 14px; font-weight: 500; color: var(--mavi); margin-bottom: 10px;
}
.bolum-basligi h2 {
    font-size: clamp(2.1rem, 5.2vw, 3.6rem); text-transform: uppercase; color: var(--mavi);
}
.bolum-basligi h2 span { display: block; color: var(--lacivert); }
.bolum--koyu .bolum-basligi h2, .bolum--gece .bolum-basligi h2 { color: var(--mavi-acik); }
.bolum--koyu .bolum-basligi h2 span, .bolum--gece .bolum-basligi h2 span { color: #fff; }
.bolum--koyu .bolum-basligi__ust, .bolum--gece .bolum-basligi__ust { color: var(--mavi-acik); }
.bolum-basligi p { max-width: 640px; margin-top: 16px; color: var(--metin-soluk); }
.bolum--koyu .bolum-basligi p, .bolum--gece .bolum-basligi p { color: var(--beyaz-soluk); }

/* ============================ Düğmeler ============================ */

.dugme {
    display: inline-flex; align-items: center; justify-content: center; gap: 10px;
    min-height: 50px; padding: 12px 28px; border-radius: 999px; border: 2px solid transparent;
    font-family: var(--baslik-font); font-size: 15px; font-weight: 500; letter-spacing: .08em; text-transform: uppercase;
    cursor: pointer; transition: background .2s, color .2s, border-color .2s, transform .2s, box-shadow .2s;
    text-align: center;
}
.dugme svg { width: 18px; height: 18px; flex: none; transition: transform .2s; }
.dugme:hover svg { transform: translateX(3px); }
.dugme--beyaz { background: #fff; color: var(--lacivert); }
.dugme--beyaz:hover { background: var(--mavi); color: #fff; box-shadow: 0 12px 30px -10px rgba(48, 137, 237, .7); }
.dugme--cizgi { border-color: rgba(255, 255, 255, .45); color: #fff; }
.dugme--cizgi:hover { border-color: #fff; background: rgba(255, 255, 255, .08); }
.dugme--mavi { background: var(--mavi); color: #fff; }
.dugme--mavi:hover { background: var(--mavi-koyu); box-shadow: 0 12px 30px -10px rgba(48, 137, 237, .7); }
.dugme--lacivert { background: var(--lacivert); color: #fff; }
.dugme--lacivert:hover { background: var(--mavi); }
.dugme--tam { width: 100%; }
/* İndir düğmesi: ok aşağı kayar, boyut küçük ve soluk yazılır */
.dugme--indir:hover svg { transform: translateY(3px); }
.dugme--indir small { font-family: var(--govde-font, inherit); font-size: 12px; letter-spacing: .02em; text-transform: none; opacity: .7; }

.cip {
    display: inline-flex; align-items: center; gap: 6px; padding: 5px 12px; border-radius: 999px;
    font-size: 13px; font-weight: 500; line-height: 1.3; background: rgba(48, 137, 237, .1); color: var(--mavi-koyu);
}
.cip--koyu { background: rgba(255, 255, 255, .1); color: #fff; border: 1px solid rgba(255, 255, 255, .18); }
.cip--rozet { background: linear-gradient(135deg, var(--mavi), var(--mor)); color: #fff; }
.cip-listesi { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin: 0; padding: 0; }

/* ============================ Üst şerit ve yan menü ============================ */

.ust-serit {
    position: fixed; inset: 0 0 auto 0; z-index: 100; height: var(--ust-serit-yukseklik);
    display: flex; align-items: center; color: #fff;
    transition: background .3s, box-shadow .3s, height .3s;
}
.ust-serit.kaydirildi {
    background: rgba(10, 13, 44, .9); box-shadow: 0 10px 30px -18px rgba(0, 0, 0, .6);
    -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
}
.ust-serit .kapsayici { display: flex; align-items: center; justify-content: space-between; gap: 16px; }

.logo { display: inline-flex; align-items: center; gap: 12px; }
.logo__isaret {
    width: 42px; height: 42px; border-radius: 12px; flex: none; display: grid; place-items: center;
    background: linear-gradient(135deg, var(--mavi), var(--mor));
    font-family: var(--baslik-font); font-weight: 700; font-size: 17px; letter-spacing: .02em; color: #fff;
    box-shadow: 0 10px 24px -10px rgba(48, 137, 237, .8);
}
.logo__metin { display: flex; flex-direction: column; line-height: 1.1; }
.logo__metin strong { font-family: var(--baslik-font); font-weight: 600; font-size: 19px; letter-spacing: .1em; text-transform: uppercase; }
.logo__metin small { font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--mavi-acik); }

.ust-menu { display: none; }
.ust-menu ul { display: flex; gap: 6px; list-style: none; margin: 0; padding: 0; }
.ust-menu a {
    display: block; padding: 8px 14px; border-radius: 999px;
    font-family: var(--baslik-font); font-size: 15px; letter-spacing: .1em; text-transform: uppercase; color: var(--beyaz-soluk);
    transition: color .2s, background .2s;
}
.ust-menu a:hover { color: #fff; background: rgba(255, 255, 255, .08); }
@media (min-width: 992px) { .ust-menu { display: block; } }

/* Temadaki üç çizgili yan menü düğmesi */
.menu-dugmesi {
    width: 46px; height: 46px; border-radius: 50%; border: 1px solid rgba(255, 255, 255, .25); background: transparent;
    display: grid; place-content: center; gap: 5px; cursor: pointer; flex: none;
}
.menu-dugmesi span { display: block; width: 20px; height: 2px; background: #fff; border-radius: 2px; transition: transform .25s, opacity .25s; }
.menu-dugmesi span:nth-child(2) { width: 14px; justify-self: end; }
.menu-dugmesi:hover { background: rgba(255, 255, 255, .08); }
@media (min-width: 992px) { .menu-dugmesi { display: none; } }

.yan-menu {
    position: fixed; top: 0; right: 0; bottom: 0; z-index: 150; width: min(380px, 100%);
    background: linear-gradient(160deg, var(--lacivert) 0%, var(--gece) 100%); color: #fff;
    padding: 28px 28px 32px; display: flex; flex-direction: column; gap: 32px; overflow-y: auto;
    transform: translateX(100%); transition: transform .35s cubic-bezier(.2, .7, .2, 1); visibility: hidden;
}
.yan-menu.acik { transform: none; visibility: visible; }
.yan-menu__ust { display: flex; align-items: center; justify-content: space-between; }
.yan-menu__kapat {
    width: 44px; height: 44px; border-radius: 50%; border: 1px solid rgba(255, 255, 255, .25); background: transparent;
    display: grid; place-items: center; cursor: pointer; color: #fff;
}
.yan-menu__kapat svg { width: 20px; height: 20px; }
.yan-menu nav ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.yan-menu nav a {
    display: flex; align-items: center; justify-content: space-between; padding: 12px 0;
    font-family: var(--baslik-font); font-size: 26px; letter-spacing: .06em; text-transform: uppercase;
    border-bottom: 1px solid rgba(255, 255, 255, .08); transition: color .2s, padding .2s;
}
.yan-menu nav a:hover { color: var(--mavi-acik); padding-left: 8px; }
.yan-menu__alt { margin-top: auto; display: grid; gap: 14px; color: var(--beyaz-soluk); font-size: 15px; }
.yan-menu__alt a:hover { color: #fff; }
.yan-menu-perde {
    position: fixed; inset: 0; z-index: 140; background: rgba(5, 7, 25, .6);
    opacity: 0; visibility: hidden; transition: opacity .3s, visibility .3s;
}
.yan-menu-perde.acik { opacity: 1; visibility: visible; }
body.menu-acik { overflow: hidden; }

.sosyal { display: flex; gap: 10px; list-style: none; margin: 0; padding: 0; }
.sosyal a {
    width: 42px; height: 42px; border-radius: 50%; display: grid; place-items: center;
    background: rgba(255, 255, 255, .08); color: #fff; transition: background .2s, transform .2s;
}
.sosyal a:hover { background: var(--mavi); transform: translateY(-2px); }
.sosyal svg { width: 18px; height: 18px; }

/* ============================ Karşılama (banner) ============================ */

.karsilama {
    position: relative; min-height: 100vh; min-height: 100svh; display: flex; align-items: center;
    padding: calc(var(--ust-serit-yukseklik) + 40px) 0 80px; color: #fff; overflow: hidden;
    background:
        radial-gradient(900px 600px at 85% 15%, rgba(106, 61, 240, .45), transparent 60%),
        radial-gradient(800px 600px at 10% 90%, rgba(48, 137, 237, .35), transparent 60%),
        linear-gradient(160deg, #11144a 0%, var(--gece) 60%);
}
/* İnce ızgara deseni */
.karsilama::before {
    content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .5;
    background-image:
        linear-gradient(rgba(143, 193, 247, .07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(143, 193, 247, .07) 1px, transparent 1px);
    background-size: 56px 56px;
    -webkit-mask-image: radial-gradient(ellipse at 50% 40%, #000 30%, transparent 75%);
    mask-image: radial-gradient(ellipse at 50% 40%, #000 30%, transparent 75%);
}
/* Süzülen ışık küreleri */
.karsilama__kure { position: absolute; border-radius: 50%; filter: blur(60px); opacity: .55; pointer-events: none; animation: suzul 14s ease-in-out infinite alternate; }
.karsilama__kure--1 { width: 340px; height: 340px; background: var(--mavi); top: 12%; left: -120px; }
.karsilama__kure--2 { width: 280px; height: 280px; background: var(--mor); bottom: 6%; right: -80px; animation-delay: -6s; }
@keyframes suzul { from { transform: translate3d(0, 0, 0) scale(1); } to { transform: translate3d(40px, -30px, 0) scale(1.15); } }

.karsilama .kapsayici { position: relative; display: grid; gap: 56px; align-items: center; }
@media (min-width: 992px) { .karsilama .kapsayici { grid-template-columns: 1.15fr .85fr; gap: 40px; } }

.karsilama__etiket {
    display: inline-flex; align-items: center; gap: 10px; padding: 6px 14px 6px 6px; border-radius: 999px;
    background: rgba(255, 255, 255, .07); border: 1px solid rgba(255, 255, 255, .14);
    font-size: 14px; letter-spacing: .04em; color: var(--beyaz-soluk); margin-bottom: 26px;
}
.karsilama__etiket b {
    font-family: var(--baslik-font); font-weight: 500; letter-spacing: .12em; text-transform: uppercase;
    background: var(--mavi); color: #fff; padding: 3px 10px; border-radius: 999px; font-size: 12px;
}
.karsilama__baslik {
    font-size: clamp(2.6rem, 7.2vw, 5.4rem); text-transform: uppercase; font-weight: 600; line-height: 1.02;
    letter-spacing: .005em;
}
.karsilama__baslik .vurgu {
    display: block;
    background: linear-gradient(90deg, var(--mavi-acik) 0%, var(--mavi) 45%, #b79cff 100%);
    -webkit-background-clip: text; background-clip: text; color: transparent;
}
.karsilama__aciklama { margin: 26px 0 34px; max-width: 600px; font-size: 18px; font-weight: 300; color: var(--beyaz-soluk); }
.karsilama__dugmeler { display: flex; flex-wrap: wrap; gap: 14px; }

/* Sağdaki proje kapağı yığını */
.vitrin-yigini { position: relative; height: 340px; max-width: 520px; width: 100%; margin: 0 auto; }
@media (min-width: 576px) { .vitrin-yigini { height: 420px; } }
.vitrin-yigini__kart {
    position: absolute; width: 78%; aspect-ratio: 16 / 10; border-radius: var(--kose); overflow: hidden;
    background: var(--lacivert-2); box-shadow: 0 30px 70px -25px rgba(0, 0, 0, .7); border: 1px solid rgba(255, 255, 255, .12);
    transition: transform .5s cubic-bezier(.2, .7, .2, 1);
}
.vitrin-yigini__kart img { width: 100%; height: 100%; object-fit: cover; object-position: top center; }
.vitrin-yigini__kart::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, rgba(10, 13, 44, .55)); }
.vitrin-yigini__kart:nth-child(1) { top: 0; left: 0; transform: rotate(-6deg); z-index: 1; }
.vitrin-yigini__kart:nth-child(2) { top: 18%; right: 0; transform: rotate(5deg); z-index: 2; }
.vitrin-yigini__kart:nth-child(3) { bottom: 0; left: 10%; transform: rotate(-1deg); z-index: 3; }
.vitrin-yigini:hover .vitrin-yigini__kart:nth-child(1) { transform: rotate(-9deg) translate(-14px, -10px); }
.vitrin-yigini:hover .vitrin-yigini__kart:nth-child(2) { transform: rotate(8deg) translate(14px, -6px); }
.vitrin-yigini:hover .vitrin-yigini__kart:nth-child(3) { transform: rotate(0) translateY(10px); }
.vitrin-yigini__ad {
    position: absolute; left: 14px; bottom: 12px; z-index: 1; font-family: var(--baslik-font);
    letter-spacing: .08em; text-transform: uppercase; font-size: 15px;
}

.asagi-ok {
    position: absolute; left: 50%; bottom: 22px; transform: translateX(-50%); width: 28px; height: 46px;
    border: 2px solid rgba(255, 255, 255, .4); border-radius: 999px; display: none;
}
.asagi-ok::after {
    content: ""; position: absolute; left: 50%; top: 9px; width: 4px; height: 8px; margin-left: -2px; border-radius: 2px;
    background: #fff; animation: kaydir 1.8s ease-in-out infinite;
}
@keyframes kaydir { 0% { opacity: 0; transform: translateY(0); } 40% { opacity: 1; } 100% { opacity: 0; transform: translateY(14px); } }
@media (min-width: 992px) and (min-height: 760px) { .asagi-ok { display: block; } }

/* ============================ Öne çıkanlar (numaralı kartlar) ============================ */

.numarali-izgara { display: grid; gap: 22px; }
@media (min-width: 768px) { .numarali-izgara { grid-template-columns: repeat(2, 1fr); gap: 28px; } }

.numarali-kart {
    position: relative; display: flex; flex-direction: column; gap: 14px; padding: 30px 28px 28px;
    border-radius: var(--kose); background: rgba(255, 255, 255, .04); border: 1px solid rgba(255, 255, 255, .1);
    transition: transform .3s, background .3s, border-color .3s;
    overflow: hidden;
}
.numarali-kart::before {
    content: ""; position: absolute; left: 0; top: 0; height: 3px; width: 100%;
    background: linear-gradient(90deg, var(--mavi), var(--mor)); transform: scaleX(.18); transform-origin: left; transition: transform .45s;
}
.numarali-kart:hover { transform: translateY(-6px); background: rgba(255, 255, 255, .07); border-color: rgba(143, 193, 247, .35); }
.numarali-kart:hover::before { transform: scaleX(1); }
.numarali-kart__no {
    font-family: var(--baslik-font); font-weight: 700; font-size: 64px; line-height: 1;
    background: linear-gradient(180deg, var(--mavi-acik), rgba(143, 193, 247, .15));
    -webkit-background-clip: text; background-clip: text; color: transparent;
}
.numarali-kart h3 { font-size: 28px; text-transform: uppercase; letter-spacing: .03em; }
.numarali-kart p { color: var(--beyaz-soluk); font-weight: 300; }
.numarali-kart__alt { margin-top: auto; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; padding-top: 6px; }
.numarali-kart__baglanti {
    display: inline-flex; align-items: center; gap: 8px; font-family: var(--baslik-font);
    letter-spacing: .1em; text-transform: uppercase; font-size: 14px; color: var(--mavi-acik);
}
.numarali-kart__baglanti svg { width: 18px; height: 18px; transition: transform .2s; }
.numarali-kart:hover .numarali-kart__baglanti svg { transform: translateX(4px); }
.numarali-kart > a.kart-ortu { position: absolute; inset: 0; z-index: 1; }
.numarali-kart a:not(.kart-ortu) { position: relative; z-index: 2; }

/* ============================ Alıntı bandı ============================ */

.alinti {
    position: relative; color: #fff; padding: 90px 0;
    background:
        radial-gradient(700px 400px at 20% 50%, rgba(48, 137, 237, .35), transparent 70%),
        linear-gradient(120deg, var(--gece) 0%, #191c5e 100%);
}
.alinti__kutu { max-width: 760px; margin-left: auto; text-align: left; }
.alinti__isaret { width: 54px; height: 54px; color: var(--mavi); margin-bottom: 18px; }
.alinti blockquote { margin: 0; font-family: var(--baslik-font); font-size: clamp(1.6rem, 3.6vw, 2.6rem); line-height: 1.25; font-weight: 400; }
.alinti cite { display: block; margin-top: 22px; font-style: normal; font-family: var(--baslik-font); letter-spacing: .16em; text-transform: uppercase; color: var(--mavi-acik); font-size: 15px; }

/* ============================ Proje ızgarası ============================ */

.filtreler { display: flex; flex-wrap: wrap; gap: 10px; margin: 0 0 34px; padding: 0; list-style: none; }
.filtre {
    padding: 9px 20px; border-radius: 999px; border: 1px solid var(--cizgi); background: #fff; cursor: pointer;
    font-family: var(--baslik-font); font-size: 15px; letter-spacing: .08em; text-transform: uppercase; color: var(--metin-soluk);
    transition: background .2s, color .2s, border-color .2s;
}
.filtre:hover { border-color: var(--mavi); color: var(--mavi); }
.filtre.secili { background: var(--lacivert); border-color: var(--lacivert); color: #fff; }
.filtre small { opacity: .65; margin-left: 4px; font-family: var(--govde-font); letter-spacing: 0; }

.proje-izgara { display: grid; gap: 22px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .proje-izgara { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1100px) {
    .proje-izgara { grid-template-columns: repeat(3, 1fr); gap: 26px; }
    /* Mozaik: ilk (en önemli) proje iki sütun genişliğinde, solda görsel sağda metin */
    .proje-izgara--mozaik .proje-karti:first-child:not([hidden]) { grid-column: span 2; flex-direction: row; }
    .proje-izgara--mozaik .proje-karti:first-child .proje-karti__gorsel { flex: 0 0 58%; aspect-ratio: auto; min-height: 360px; }
    .proje-izgara--mozaik .proje-karti:first-child .proje-karti__govde { justify-content: center; padding: 34px 32px; }
    .proje-izgara--mozaik .proje-karti:first-child .proje-karti__baslik { font-size: 34px; }
    .proje-izgara--mozaik .proje-karti:first-child .proje-karti__teknoloji { margin-top: 8px; }
}

.proje-karti {
    position: relative; display: flex; flex-direction: column; border-radius: var(--kose); overflow: hidden;
    background: #fff; box-shadow: var(--golge-hafif); border: 1px solid var(--cizgi);
    transition: transform .35s cubic-bezier(.2, .7, .2, 1), box-shadow .35s;
    animation: belir .45s ease both;
}
.proje-karti[hidden] { display: none; }
.proje-karti:hover { transform: translateY(-6px); box-shadow: var(--golge); }
@keyframes belir { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

.proje-karti__gorsel { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: var(--lacivert); }
.proje-karti__gorsel img { width: 100%; height: 100%; object-fit: cover; object-position: top center; transition: transform .6s cubic-bezier(.2, .7, .2, 1); }
.proje-karti:hover .proje-karti__gorsel img { transform: scale(1.05); }
/* Temadaki üzerine gelince açılan katman */
.proje-karti__ortu {
    position: absolute; inset: 0; display: flex; align-items: flex-end; padding: 18px;
    background: linear-gradient(180deg, rgba(10, 13, 44, 0) 35%, rgba(10, 13, 44, .88) 100%);
    opacity: 0; transition: opacity .35s;
}
.proje-karti:hover .proje-karti__ortu, .proje-karti:focus-within .proje-karti__ortu { opacity: 1; }
.proje-karti__ortu span {
    display: inline-flex; align-items: center; gap: 8px; color: #fff; font-family: var(--baslik-font);
    letter-spacing: .12em; text-transform: uppercase; font-size: 14px; transform: translateY(10px); transition: transform .35s;
}
.proje-karti:hover .proje-karti__ortu span { transform: none; }
.proje-karti__ortu svg { width: 18px; height: 18px; }
.proje-karti__rozet { position: absolute; top: 14px; left: 14px; z-index: 1; }

/* Kapak görseli olmayan projeler için yer tutucu */
.yer-tutucu {
    width: 100%; height: 100%; display: grid; place-items: center; position: relative;
    background:
        radial-gradient(circle at 25% 20%, rgba(143, 193, 247, .35), transparent 45%),
        linear-gradient(135deg, var(--lacivert) 0%, var(--mor) 100%);
    color: #fff; font-family: var(--baslik-font); font-weight: 700; font-size: 64px; letter-spacing: .04em;
}
.yer-tutucu::after {
    content: ""; position: absolute; inset: 0; opacity: .35;
    background-image: radial-gradient(rgba(255, 255, 255, .35) 1px, transparent 1px); background-size: 18px 18px;
}

.proje-karti__govde { display: flex; flex-direction: column; gap: 10px; padding: 20px 22px 22px; flex: 1; }
.proje-karti__kategori { font-family: var(--baslik-font); font-size: 13px; letter-spacing: .14em; text-transform: uppercase; color: var(--mavi); }
.proje-karti__baslik { font-size: 24px; text-transform: uppercase; letter-spacing: .02em; color: var(--lacivert); }
.proje-karti__ozet { color: var(--metin-soluk); font-size: 15.5px; line-height: 1.6; }
.proje-karti__teknoloji { margin-top: auto; padding-top: 6px; }
.proje-karti__teknoloji .cip { font-size: 12px; padding: 3px 10px; }
.proje-karti > a.kart-ortu { position: absolute; inset: 0; z-index: 3; }

/* Proje bölümünün altındaki sayı şeridi (temadaki "We've completed more than 389") */
.sayilar { display: grid; gap: 18px; margin-top: 54px; padding: 28px; border-radius: var(--kose); background: var(--zemin-2); }
@media (min-width: 768px) { .sayilar { grid-template-columns: repeat(3, 1fr); padding: 34px 40px; } }
.sayi { display: flex; align-items: center; gap: 16px; }
.sayi strong { font-family: var(--baslik-font); font-size: 46px; font-weight: 600; line-height: 1; color: var(--mavi); white-space: nowrap; }
.sayi span { color: var(--metin-soluk); font-size: 15px; line-height: 1.4; }

/* ============================ Hakkımda ============================ */

.hakkimda { display: grid; gap: 30px; align-items: start; }
@media (min-width: 992px) { .hakkimda { grid-template-columns: .8fr 1.2fr; gap: 70px; } }
.hakkimda__metin { font-size: 19px; font-weight: 300; color: #2b3150; }
.hakkimda__metin p { margin-bottom: 1.1em; }
.hakkimda__teknoloji h3 { font-size: 15px; letter-spacing: .14em; text-transform: uppercase; color: var(--metin-soluk); margin: 26px 0 14px; font-weight: 500; }
.hakkimda__teknoloji .cip { background: #fff; border: 1px solid var(--cizgi); color: var(--lacivert); font-size: 14px; padding: 7px 14px; }

/* ============================ İletişim ============================ */

.iletisim { display: grid; gap: 44px; }
@media (min-width: 992px) { .iletisim { grid-template-columns: 1fr 1fr; gap: 70px; } }
.iletisim__baslik { font-size: clamp(2.2rem, 5vw, 3.6rem); text-transform: uppercase; }
.iletisim__baslik span { display: block; color: var(--mavi-acik); }
.iletisim__aciklama { color: var(--beyaz-soluk); margin: 18px 0 28px; max-width: 460px; font-weight: 300; }
.iletisim-listesi { list-style: none; margin: 0 0 30px; padding: 0; display: grid; gap: 16px; }
.iletisim-listesi a, .iletisim-listesi span { display: inline-flex; align-items: center; gap: 14px; color: #fff; word-break: break-word; }
.iletisim-listesi i {
    width: 46px; height: 46px; border-radius: 50%; display: grid; place-items: center; flex: none;
    background: rgba(255, 255, 255, .08); color: var(--mavi-acik); transition: background .2s, color .2s;
}
.iletisim-listesi a:hover i { background: var(--mavi); color: #fff; }
.iletisim-listesi svg { width: 20px; height: 20px; }

.form { display: grid; gap: 14px; }
.form__iki { display: grid; gap: 14px; }
@media (min-width: 576px) { .form__iki { grid-template-columns: 1fr 1fr; } }
.form label { display: block; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--beyaz-soluk); margin-bottom: 6px; }
.form input, .form textarea {
    width: 100%; padding: 14px 16px; border-radius: var(--kose-kucuk); border: 1px solid rgba(255, 255, 255, .2);
    background: rgba(255, 255, 255, .06); color: #fff; transition: border-color .2s, background .2s;
}
.form input::placeholder, .form textarea::placeholder { color: rgba(255, 255, 255, .45); }
.form input:focus, .form textarea:focus { outline: none; border-color: var(--mavi-acik); background: rgba(255, 255, 255, .1); }
.form textarea { min-height: 150px; resize: vertical; }
.form__not { font-size: 13px; color: rgba(255, 255, 255, .55); }
/* Botları yakalamak için gizli tuzak alanı (insanlar görmez, doldurmaz) */
.form__tuzak { position: absolute !important; left: -10000px !important; width: 1px; height: 1px; overflow: hidden; }

.form-sonuc { padding: 14px 18px; border-radius: var(--kose-kucuk); font-size: 15px; display: flex; gap: 10px; align-items: flex-start; }
.form-sonuc--basarili { background: rgba(46, 204, 113, .16); border: 1px solid rgba(46, 204, 113, .45); color: #d6ffe6; }
.form-sonuc--hata { background: rgba(255, 99, 99, .14); border: 1px solid rgba(255, 99, 99, .45); color: #ffe1e1; }

/* ============================ Alt bilgi ============================ */

.alt-bilgi { background: var(--gece); color: var(--beyaz-soluk); padding: 34px 0; font-size: 14px; }
.alt-bilgi .kapsayici { display: flex; flex-wrap: wrap; gap: 18px; align-items: center; justify-content: space-between; }
.alt-bilgi nav ul { display: flex; flex-wrap: wrap; gap: 18px; list-style: none; margin: 0; padding: 0; }
.alt-bilgi a:hover { color: #fff; }
/* Sağ alttaki sabit WhatsApp düğmesi alt menünün üstüne binmesin */
.alt-bilgi nav { padding-right: 72px; }
.alt-bilgi__yonetim { display: inline-flex; align-items: center; gap: 6px; opacity: .75; }
.alt-bilgi__yonetim svg { width: 14px; height: 14px; }

.whatsapp-dugmesi {
    position: fixed; right: 18px; bottom: 18px; z-index: 90; width: 56px; height: 56px; border-radius: 50%;
    display: grid; place-items: center; background: #25d366; color: #fff; box-shadow: 0 14px 30px -10px rgba(37, 211, 102, .8);
    transition: transform .2s;
}
.whatsapp-dugmesi:hover { transform: scale(1.07); }
.whatsapp-dugmesi svg { width: 28px; height: 28px; }

/* ============================ Proje detay sayfası ============================ */

.proje-ust {
    position: relative; color: #fff; padding: calc(var(--ust-serit-yukseklik) + 56px) 0 70px; overflow: hidden;
    background:
        radial-gradient(700px 420px at 90% 0%, rgba(106, 61, 240, .45), transparent 65%),
        radial-gradient(600px 400px at 0% 100%, rgba(48, 137, 237, .3), transparent 60%),
        linear-gradient(160deg, #11144a, var(--gece));
}
.proje-ust::before {
    content: ""; position: absolute; inset: 0; opacity: .45; pointer-events: none;
    background-image: linear-gradient(rgba(143, 193, 247, .07) 1px, transparent 1px), linear-gradient(90deg, rgba(143, 193, 247, .07) 1px, transparent 1px);
    background-size: 56px 56px;
}
.proje-ust .kapsayici { position: relative; }
.kirinti { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; font-size: 14px; color: var(--beyaz-soluk); margin-bottom: 22px; }
.kirinti a:hover { color: #fff; }
.kirinti span[aria-hidden] { opacity: .5; }
.proje-ust h1 { font-size: clamp(2.4rem, 6.4vw, 4.6rem); text-transform: uppercase; max-width: 900px; }
.proje-ust__ozet { margin: 20px 0 26px; max-width: 720px; font-size: 19px; font-weight: 300; color: var(--beyaz-soluk); }
.proje-ust__cipler { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 30px; }

.proje-govde { display: grid; gap: 40px; padding: 60px 0 90px; }
@media (min-width: 992px) { .proje-govde { grid-template-columns: minmax(0, 1fr) 340px; gap: 56px; padding-top: 70px; } }

/* Kapak görseli tarayıcı penceresi çerçevesinde */
.tarayici-cerceve { border-radius: var(--kose); overflow: hidden; background: #fff; box-shadow: var(--golge); border: 1px solid var(--cizgi); margin: 0 0 44px; }
.tarayici-cerceve__ust { display: flex; align-items: center; gap: 7px; padding: 12px 16px; background: var(--zemin-2); border-bottom: 1px solid var(--cizgi); }
.tarayici-cerceve__ust i { width: 11px; height: 11px; border-radius: 50%; background: #d6dbe8; }
.tarayici-cerceve__ust i:nth-child(1) { background: #ff6159; }
.tarayici-cerceve__ust i:nth-child(2) { background: #ffbd2e; }
.tarayici-cerceve__ust i:nth-child(3) { background: #28c941; }
.tarayici-cerceve__ust span { margin-left: 10px; font-size: 13px; color: var(--metin-soluk); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tarayici-cerceve img { width: 100%; }
.tarayici-cerceve .yer-tutucu { aspect-ratio: 16 / 9; font-size: 90px; }

.icerik-metni { font-size: 18px; color: #2b3150; }
.icerik-metni h2 { font-size: 30px; text-transform: uppercase; color: var(--lacivert); margin: 1.6em 0 .6em; }
.icerik-metni h2:first-child { margin-top: 0; }
.icerik-metni h3 { font-size: 22px; color: var(--lacivert); margin: 1.4em 0 .5em; }
.icerik-metni ul, .icerik-metni ol { padding-left: 0; margin: 0 0 1.2em; list-style: none; display: grid; gap: 10px; }
.icerik-metni ul li { position: relative; padding-left: 30px; }
.icerik-metni ul li::before {
    content: ""; position: absolute; left: 0; top: .5em; width: 14px; height: 14px; border-radius: 4px;
    background: linear-gradient(135deg, var(--mavi), var(--mor));
}
.icerik-metni ol { counter-reset: madde; }
.icerik-metni ol li { counter-increment: madde; position: relative; padding-left: 38px; }
.icerik-metni ol li::before {
    content: counter(madde, decimal-leading-zero); position: absolute; left: 0; top: 0;
    font-family: var(--baslik-font); font-weight: 600; color: var(--mavi);
}
.icerik-metni blockquote { margin: 1.4em 0; padding: 18px 22px; border-left: 4px solid var(--mavi); background: var(--zemin-2); border-radius: 0 12px 12px 0; font-style: italic; }
.icerik-metni a { color: var(--mavi-koyu); text-decoration: underline; text-underline-offset: 3px; }
.icerik-metni code { background: var(--zemin-2); border: 1px solid var(--cizgi); padding: 1px 6px; border-radius: 6px; font-size: .9em; }

.galeri { display: grid; gap: 14px; grid-template-columns: repeat(2, 1fr); margin-top: 44px; }
@media (min-width: 768px) { .galeri { grid-template-columns: repeat(3, 1fr); } }
.galeri a { display: block; border-radius: var(--kose-kucuk); overflow: hidden; aspect-ratio: 4 / 3; background: var(--zemin-2); border: 1px solid var(--cizgi); }
.galeri img { width: 100%; height: 100%; object-fit: cover; object-position: top; transition: transform .4s; }
.galeri a:hover img { transform: scale(1.06); }

.bilgi-karti {
    border-radius: var(--kose); background: var(--lacivert); color: #fff; padding: 28px; box-shadow: var(--golge);
    display: grid; gap: 22px;
}
@media (min-width: 992px) { .bilgi-karti { position: sticky; top: calc(var(--ust-serit-yukseklik) + 24px); } }
.bilgi-karti h2 { font-size: 20px; letter-spacing: .14em; text-transform: uppercase; color: var(--mavi-acik); font-weight: 500; }
.bilgi-karti dl { margin: 0; display: grid; gap: 16px; }
.bilgi-karti__etiket { font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: rgba(255, 255, 255, .55); margin: 0 0 10px !important; }
.bilgi-karti dt { font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: rgba(255, 255, 255, .55); margin-bottom: 4px; }
.bilgi-karti dd { margin: 0; font-size: 16px; word-break: break-word; }
.bilgi-karti__not { margin: -12px 0 0 !important; font-size: 12.5px; line-height: 1.5; color: rgba(255, 255, 255, .55); }

.bos-durum { text-align: center; padding: 120px 0 100px; }
.bos-durum__kod { font-family: var(--baslik-font); font-size: clamp(5rem, 18vw, 10rem); line-height: 1; color: var(--mavi); font-weight: 700; }
.bos-durum h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); text-transform: uppercase; color: var(--lacivert); margin: 10px 0 14px; }
.bos-durum p { color: var(--metin-soluk); max-width: 520px; margin: 0 auto 28px; }

/* ============================ Işık kutusu (galeri) ============================ */

.isik-kutusu {
    position: fixed; inset: 0; z-index: 300; background: rgba(5, 7, 25, .94); display: none;
    align-items: center; justify-content: center; padding: 60px 16px;
}
.isik-kutusu.acik { display: flex; }
.isik-kutusu figure { margin: 0; max-width: 1200px; width: 100%; text-align: center; }
.isik-kutusu img { max-height: 78vh; width: auto; margin: 0 auto; border-radius: 10px; box-shadow: 0 30px 80px -20px #000; }
.isik-kutusu figcaption { color: var(--beyaz-soluk); margin-top: 14px; font-size: 15px; }
.isik-kutusu button {
    position: absolute; width: 48px; height: 48px; border-radius: 50%; border: 1px solid rgba(255, 255, 255, .25);
    background: rgba(255, 255, 255, .06); color: #fff; display: grid; place-items: center; cursor: pointer;
}
.isik-kutusu button:hover { background: var(--mavi); }
.isik-kutusu button svg { width: 22px; height: 22px; }
.isik-kutusu__kapat { top: 14px; right: 14px; }
.isik-kutusu__onceki { left: 14px; top: 50%; transform: translateY(-50%); }
.isik-kutusu__sonraki { right: 14px; top: 50%; transform: translateY(-50%); }

/* ============================ Belirme animasyonu ============================ */

.js [data-belir] { opacity: 0; transform: translateY(26px); transition: opacity .8s ease, transform .8s cubic-bezier(.2, .7, .2, 1); }
.js [data-belir].gorundu { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
    .js [data-belir] { opacity: 1; transform: none; }
}

/* Proje adları büyük harfe çevrilmez: Türkçe büyük harf kuralı "OpticRead" gibi marka adlarını
   "OPTİCREAD" yapar. Proje adları yazıldığı gibi görünür; bölüm başlıkları büyük harf kalır. */
.numarali-kart h3,
.proje-karti__baslik,
.proje-ust h1,
.vitrin-yigini__ad { text-transform: none; letter-spacing: .005em; }