/* ROTUNDA MİMARLIK — tasarım tokenları ve ana stil (siyah/gold premium) */
:root {
  --bg: #0a0a0a;
  --bg-2: #111110;
  --bg-3: #181816;
  --gold: #c9a227;
  --gold-soft: #d9b95c;
  --cream: #f3ead8;
  --text: #eae6dd;
  --muted: #a29b8c;
  --line: rgba(201, 162, 39, .28);
  --line-dim: rgba(255, 255, 255, .08);
  --serif: 'Playfair Display', 'Times New Roman', serif;
  --sans: 'Montserrat', 'Segoe UI', sans-serif;
  --maxw: 1200px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg); }
body {
  background: transparent; color: var(--text);
  font-family: var(--sans); font-size: 15px; line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
/* Katalogdaki gül penceresi deseni — sayfa köşesinden taşan silik zemin süsü */
body::before {
  content: ''; position: fixed; z-index: -1; pointer-events: none;
  right: -120px; bottom: -90px; width: 680px; height: 395px;
  background: url('../assets/ui/ornament.png') no-repeat center / contain;
  transform: rotate(180deg); opacity: .85;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

h1, h2, h3, .serif { font-family: var(--serif); font-weight: 500; letter-spacing: .04em; }
.eyebrow {
  font-family: var(--sans); font-size: 11px; letter-spacing: .35em;
  text-transform: uppercase; color: var(--gold); margin-bottom: 14px;
}
.sec-title { font-size: clamp(26px, 3.6vw, 40px); text-transform: uppercase; }
.sec-title em { font-style: normal; color: var(--gold); }
.sec-head { margin-bottom: 44px; }
.sec-head.center { text-align: center; }
.sec-head p.lead { color: var(--muted); max-width: 640px; margin-top: 12px; }
.sec-head.center p.lead { margin-left: auto; margin-right: auto; }
section { padding: 90px 0; }

/* ---------- Header (ince KOYU bar — BÜYÜK parlak logo bardan taşar) ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  background: linear-gradient(180deg, rgba(8,8,8,.72) 0%, rgba(8,8,8,0) 100%);
  padding: 14px 0; transition: background .35s, padding .3s, box-shadow .3s;
}
.site-header.solid {
  background: rgba(9,9,8,.96); border-bottom: 1px solid var(--line-dim);
  padding: 5px 0; box-shadow: 0 6px 24px rgba(0,0,0,.45);
}
.nav { display: flex; align-items: center; gap: 28px; }
.brand { display: flex; align-items: flex-start; margin-right: auto; height: 50px; }
/* Çiçek+isim BÜYÜK — HER SAYFADA ve kaydırınca da AYNI (küçülmez), bardan aşağı taşar */
.site-header .brand-logo { height: 124px; width: auto; display: block; margin-top: -4px; filter: drop-shadow(0 4px 14px rgba(0,0,0,.6)); }
footer .brand-logo { height: 78px; width: auto; display: block; }
@media (max-width: 620px) { .site-header .brand-logo { height: 92px; } }

.brand-name { font-family: var(--serif); font-size: 17px; letter-spacing: .18em; }
.brand-sub { font-size: 9px; letter-spacing: .5em; color: var(--muted); text-transform: uppercase; }
.nav-links { display: flex; gap: 26px; list-style: none; }
.nav-links a {
  font-size: 13.5px; font-weight: 500; letter-spacing: .14em; text-transform: uppercase; color: #ece5d6;
  padding-bottom: 4px; border-bottom: 1px solid transparent; transition: color .2s, border-color .2s;
  white-space: nowrap; text-shadow: 0 1px 6px rgba(0,0,0,.5);
}
@media (max-width: 1280px) and (min-width: 961px) {
  .nav-links { gap: 16px; }
  .nav-links a { font-size: 12.5px; letter-spacing: .1em; }
}
.nav-links a:hover, .nav-links a.active { color: var(--gold); border-color: var(--gold); }
.lang-switch { position: relative; }
.lang-btn {
  background: none; border: 1px solid rgba(255,255,255,.35); color: #ece5d6; cursor: pointer;
  font-family: var(--sans); font-size: 11px; letter-spacing: .12em; padding: 7px 12px;
}
.lang-menu {
  position: absolute; right: 0; top: calc(100% + 6px); background: var(--bg-2);
  border: 1px solid var(--line); min-width: 110px; display: none; z-index: 101; box-shadow: 0 8px 20px rgba(0,0,0,.4);
}
.lang-menu.open { display: block; }
.lang-menu button {
  display: block; width: 100%; text-align: left; background: none; border: 0; cursor: pointer;
  color: var(--text); font-size: 12px; letter-spacing: .1em; padding: 9px 14px;
}
.lang-menu button:hover, .lang-menu button.on { color: var(--gold); background: var(--bg-3); }
.nav-toggle { display: none; background: none; border: 1px solid rgba(255,255,255,.4); color: #ece5d6; font-size: 18px; padding: 6px 12px; cursor: pointer; }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; padding: 140px 0 120px; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; animation: kenburns 18s ease-in-out infinite alternate; }
@keyframes kenburns { from { transform: scale(1); } to { transform: scale(1.07); } }
.hero-bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(5,5,5,.92) 0%, rgba(5,5,5,.55) 45%, rgba(5,5,5,.15) 100%),
              linear-gradient(0deg, rgba(10,10,10,1) 0%, rgba(10,10,10,0) 30%);
}
.hero-inner { position: relative; z-index: 2; max-width: 620px; }
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.hero h1 { font-size: clamp(38px, 5.6vw, 64px); line-height: 1.12; text-transform: uppercase; }
.hero h1 em { font-style: normal; color: var(--gold); }
.hero p { color: var(--muted); margin: 22px 0 34px; max-width: 440px; font-size: 16px; }
.btn {
  display: inline-flex; align-items: center; gap: 12px; cursor: pointer;
  border: 1px solid var(--gold); color: var(--gold); background: transparent;
  font-family: var(--sans); font-size: 12px; letter-spacing: .22em; text-transform: uppercase;
  padding: 15px 30px; transition: background .25s, color .25s;
}
.btn:hover { background: var(--gold); color: #0a0a0a; }
.btn.gold { background: var(--gold); color: #0a0a0a; }
.btn.gold:hover { background: var(--gold-soft); }
.hero-scroll {
  position: absolute; bottom: 36px; left: 50%; transform: translateX(-50%); z-index: 2;
  font-size: 10px; letter-spacing: .3em; text-transform: uppercase; color: var(--muted);
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.hero-scroll::after { content: ''; width: 1px; height: 42px; background: linear-gradient(var(--gold), transparent); }

/* ---------- Özellik bandı ---------- */
.feature-band { border-top: 1px solid var(--line-dim); border-bottom: 1px solid var(--line-dim); background: var(--bg-2); padding: 0; }
.feature-band .wrap { display: grid; grid-template-columns: repeat(4, 1fr); }
.feature {
  padding: 28px 22px; display: flex; gap: 14px; align-items: flex-start;
  border-left: 1px solid var(--line-dim);
}
.feature:first-child { border-left: 0; }
.feature svg { flex: none; width: 30px; height: 30px; stroke: var(--gold); fill: none; stroke-width: 1.1; margin-top: 3px; }
.feature b { display: block; font-size: 12px; letter-spacing: .16em; text-transform: uppercase; margin-bottom: 4px; }
.feature span { font-size: 12px; color: var(--muted); line-height: 1.5; display: block; }

/* ---------- Hizmetler ---------- */
.svc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.svc {
  border: 1px solid var(--line-dim); background: var(--bg-2); padding: 34px 28px;
  transition: border-color .3s, transform .3s;
}
.svc:hover { border-color: var(--line); transform: translateY(-4px); }
.svc svg { width: 34px; height: 34px; stroke: var(--gold); fill: none; stroke-width: 1.1; margin-bottom: 18px; }
.svc h3 { font-size: 18px; text-transform: uppercase; color: var(--gold-soft); margin-bottom: 10px; letter-spacing: .08em; }
.svc p { font-size: 13px; color: var(--muted); }

/* ---------- Projeler ---------- */
.proj-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.proj-card { position: relative; overflow: hidden; border: 1px solid var(--line-dim); aspect-ratio: 4 / 3; }
.proj-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.proj-card:hover img { transform: scale(1.06); }
.proj-card .info {
  position: absolute; inset: auto 0 0 0; padding: 40px 20px 16px;
  background: linear-gradient(transparent, rgba(5,5,5,.92));
}
.proj-card .info b { font-family: var(--serif); font-size: 17px; letter-spacing: .06em; text-transform: uppercase; display: block; }
.proj-card .info span { font-size: 11px; letter-spacing: .2em; text-transform: uppercase; color: var(--gold); }
.proj-more { text-align: center; margin-top: 44px; }

/* ---------- Sayılar bandı (krem kontrast) ---------- */
.stats { background: var(--cream); color: #171512; padding: 70px 0; }
.stats .wrap { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.stat b { font-family: var(--serif); font-size: clamp(34px, 4vw, 52px); color: #8a6d13; display: block; line-height: 1; }
.stat span { font-size: 11px; letter-spacing: .22em; text-transform: uppercase; color: #6b6250; display: block; margin-top: 10px; }
.stat { border-left: 1px solid rgba(23,21,18,.14); }
.stat:first-child { border-left: 0; }

/* ---------- İletişim CTA ---------- */
.cta { text-align: center; background: radial-gradient(ellipse at center, #14130f 0%, var(--bg) 70%); }
.cta h2 { font-size: clamp(26px, 3.4vw, 38px); text-transform: uppercase; max-width: 700px; margin: 0 auto 16px; }
.cta p { color: var(--muted); max-width: 520px; margin: 0 auto 34px; }

/* ---------- Footer ---------- */
footer { border-top: 1px solid var(--line-dim); padding: 34px 0; }
footer .wrap { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
footer .brand { margin-right: auto; padding-left: 0; height: auto; }
footer nav { display: flex; gap: 20px; }
footer nav a, footer .copy { font-size: 10px; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); }
footer nav a:hover { color: var(--gold); }

/* ---------- İç sayfa başlığı ---------- */
.page-head { padding: 170px 0 30px; }
.page-head .sec-title { font-size: clamp(32px, 4.4vw, 52px); }

/* ---------- Filtre sekmeleri ---------- */
.tabs { display: flex; gap: 8px; flex-wrap: wrap; margin: 26px 0 40px; }
.tab {
  background: none; border: 1px solid var(--line-dim); color: var(--muted); cursor: pointer;
  font-family: var(--sans); font-size: 12px; letter-spacing: .14em; text-transform: uppercase;
  padding: 10px 18px; transition: color .2s, border-color .2s;
}
.tab:hover { color: var(--text); }
.tab.on { color: var(--gold); border-color: var(--gold); }

/* ---------- Proje detay ---------- */
.pd-back { display: inline-block; font-size: 12px; letter-spacing: .2em; text-transform: uppercase; color: var(--gold); margin-bottom: 24px; }
.pd-head h1 { font-size: clamp(30px, 4.2vw, 50px); text-transform: uppercase; }
.pd-cat { font-size: 11px; letter-spacing: .3em; text-transform: uppercase; color: var(--gold); display: block; margin-bottom: 12px; }
.pd-subtitle { margin-top: 10px; font-family: var(--serif); font-style: italic; font-size: clamp(16px, 2vw, 22px); color: var(--cream); opacity: .85; }
.pd-subtitle:empty { display: none; }
.pd-layout { display: grid; grid-template-columns: 1.7fr 1fr; gap: 34px; margin-top: 40px; align-items: start; }
.pd-hero-wrap { border: 1px solid var(--line-dim); }
.pd-hero-wrap img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.pd-hero-wrap img.contain { object-fit: contain; background: #0d0d0c; } /* dikey foto: minare kesilmez */
.pd-meta { border: 1px solid var(--line-dim); background: var(--bg-2); padding: 10px 26px; }
.meta-row { padding: 16px 0; border-bottom: 1px solid var(--line-dim); }
.meta-row:last-child { border-bottom: 0; }
.meta-row span { font-size: 10px; letter-spacing: .26em; text-transform: uppercase; color: var(--gold); display: block; margin-bottom: 5px; }
.meta-row b { font-weight: 500; font-size: 14px; }
.gal-title {
  font-size: 19px; text-transform: uppercase; letter-spacing: .12em; color: var(--gold-soft);
  margin: 54px 0 20px; padding-bottom: 12px; border-bottom: 1px solid var(--line);
}
.gal-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.gal-item { cursor: zoom-in; border: 1px solid var(--line-dim); background: var(--bg-2); }
.gal-item img { width: 100%; aspect-ratio: 4/3; object-fit: cover; transition: opacity .3s; }
.gal-item.wide { grid-column: 1 / -1; }
.gal-item.wide img { aspect-ratio: auto; height: auto; object-fit: contain; background: #0d0d0c; }
.gal-item.tall img { object-fit: contain; background: #0d0d0c; } /* dikey görsel kırpılmaz */
.gal-item:hover img { opacity: .82; }
.gal-item figcaption { font-size: 11px; color: var(--muted); padding: 10px 12px; letter-spacing: .04em; }
.pd-nav { display: flex; justify-content: space-between; gap: 16px; margin-top: 64px; border-top: 1px solid var(--line-dim); padding-top: 28px; }
.pd-nav a { font-size: 11px; letter-spacing: .2em; text-transform: uppercase; color: var(--muted); max-width: 46%; }
.pd-nav a b { display: block; font-family: var(--serif); font-size: 16px; color: var(--text); text-transform: none; letter-spacing: .04em; margin-top: 6px; }
.pd-nav a:hover b { color: var(--gold); }
.pd-nav a:last-child { text-align: right; }

/* ---------- Proje videosu ---------- */
.pd-video-wrap { position: relative; width: 100%; aspect-ratio: 16 / 9; border: 1px solid var(--line-dim); background: #0d0d0c; overflow: hidden; }
.pd-video-wrap iframe, .pd-video-wrap video { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block; object-fit: contain; }

/* ---------- Lightbox ---------- */
#lightbox {
  position: fixed; inset: 0; z-index: 200; background: rgba(5,5,5,.96);
  display: none; flex-direction: column; align-items: center; justify-content: center; padding: 40px; cursor: zoom-out;
}
#lightbox.open { display: flex; }
#lightbox img { max-width: 92vw; max-height: 82vh; object-fit: contain; border: 1px solid var(--line); }
#lightbox p { color: var(--muted); font-size: 13px; margin-top: 14px; letter-spacing: .06em; }
.lb-close { position: absolute; top: 22px; right: 30px; font-size: 26px; color: var(--gold); cursor: pointer; }

/* ---------- Hakkımızda ---------- */
.about-layout { display: grid; grid-template-columns: 1.25fr 1fr; gap: 54px; align-items: start; }
#about-eyebrow { font-size: 15px; letter-spacing: .34em; }
.about-text p { color: var(--text); margin-bottom: 24px; font-size: 17.5px; line-height: 1.95; }
.about-founder { border-left: 2px solid var(--gold); padding: 6px 0 6px 20px; margin-top: 34px; }
.about-founder b { font-family: var(--serif); font-size: 21px; letter-spacing: .06em; display: block; }
.about-founder span { font-size: 12px; letter-spacing: .26em; text-transform: uppercase; color: var(--gold); }
.about-projeler { margin-top: 30px; }
/* Sağ panel: Rotunda logosu, arkada gül deseni */
.about-img-wrap { border: 1px solid var(--line); aspect-ratio: 3 / 4; overflow: hidden; }
.about-img-wrap img { display: block; width: 100%; height: 100%; object-fit: cover; }

/* ---------- İletişim ---------- */
.contact-layout { display: grid; grid-template-columns: 1fr 1.2fr; gap: 54px; align-items: start; }
.c-row { display: flex; gap: 16px; align-items: center; border: 1px solid var(--line-dim); background: var(--bg-2); padding: 18px 22px; margin-bottom: 14px; transition: border-color .25s; }
a.c-row:hover { border-color: var(--gold); }
.c-row svg { width: 26px; height: 26px; stroke: var(--gold); fill: none; stroke-width: 1.2; flex: none; }
.c-row span { font-size: 10px; letter-spacing: .26em; text-transform: uppercase; color: var(--gold); display: block; }
.c-row b { font-weight: 500; font-size: 15px; word-break: break-all; }
.c-form { border: 1px solid var(--line-dim); background: var(--bg-2); padding: 30px; }
.c-form input, .c-form textarea {
  width: 100%; background: var(--bg); border: 1px solid var(--line-dim); color: var(--text);
  font-family: var(--sans); font-size: 14px; padding: 14px 16px; margin-bottom: 14px;
}
.c-form input:focus, .c-form textarea:focus { outline: none; border-color: var(--gold); }
.c-form textarea { min-height: 140px; resize: vertical; }
.c-success { margin: 0 0 16px; padding: 14px 18px; border: 1px solid var(--gold); background: rgba(201,162,39,.1); color: var(--cream); font-size: 14px; letter-spacing: .02em; }
.c-kvkk { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 16px; font-size: 12.5px; color: var(--muted); line-height: 1.5; cursor: pointer; }
.c-kvkk input { width: auto; margin: 3px 0 0; flex: none; accent-color: var(--gold); }
.c-kvkk a { color: var(--gold-soft); }

/* ---------- Açılış animasyonu (preloader) ---------- */
#preload {
  position: fixed; inset: 0; z-index: 9999; background: #0a0a0a; display: grid; place-items: center;
  animation: preloadOut .8s ease 1.05s forwards;
}
#preload img { width: min(340px, 72vw); height: auto; animation: preloadIn 1s cubic-bezier(.2,.7,.2,1); filter: drop-shadow(0 6px 30px rgba(0,0,0,.6)); }
@keyframes preloadIn { 0% { opacity: 0; transform: translateY(12px) scale(.98); } 45% { opacity: 1; transform: none; } 100% { opacity: 1; } }
@keyframes preloadOut { to { opacity: 0; visibility: hidden; } }

/* ---------- Scroll ilerleme çubuğu ---------- */
#scrollbar {
  position: fixed; top: 0; left: 0; height: 3px; width: 100%; z-index: 200;
  background: linear-gradient(90deg, var(--gold), var(--gold-soft));
  transform: scaleX(0); transform-origin: left; will-change: transform;
}

/* ---------- Referanslar — kayan yazı şeridi (Çırağan altı) ---------- */
.marquee-band {
  display: flex; align-items: center; gap: 0; background: var(--bg-2);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line-dim); overflow: hidden;
}
.marquee-label {
  flex: none; padding: 0 26px; height: 62px; display: flex; align-items: center; background: var(--bg-3);
  font-size: 10px; letter-spacing: .28em; text-transform: uppercase; color: var(--gold);
  white-space: nowrap; border-right: 1px solid var(--line); position: relative; z-index: 2;
}
.marquee { flex: 1; overflow: hidden; position: relative; }
.marquee::before, .marquee::after {
  content: ''; position: absolute; top: 0; width: 70px; height: 100%; z-index: 2; pointer-events: none;
}
.marquee::before { left: 0; background: linear-gradient(90deg, var(--bg-2), transparent); }
.marquee::after { right: 0; background: linear-gradient(270deg, var(--bg-2), transparent); }
.marquee-track { display: inline-flex; align-items: center; white-space: nowrap; animation: marquee 42s linear infinite; }
.marquee-band:hover .marquee-track { animation-play-state: paused; }
.mq-item {
  display: inline-flex; align-items: center; padding: 0 30px; height: 62px;
  font-family: var(--serif); font-size: 16px; letter-spacing: .04em; color: var(--muted);
  transition: color .3s;
}
.mq-item::after { content: '◆'; color: var(--gold); font-size: 8px; margin-left: 30px; opacity: .7; }
.mq-item:hover { color: var(--cream); }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@media (max-width: 620px) {
  .marquee-label { display: none; }
  .mq-item { font-size: 14px; padding: 0 20px; height: 54px; }
  .mq-item::after { margin-left: 20px; }
}

/* ---------- Öncesi / Sonrası kıyasla ---------- */
#pd-compare { margin-top: 8px; }
.cmp { position: relative; width: 100%; aspect-ratio: 16 / 10; overflow: hidden; border: 1px solid var(--line-dim); background: #0d0d0c; cursor: ew-resize; user-select: none; }
.cmp img { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; pointer-events: none; }
.cmp-before-wrap { position: absolute; top: 0; left: 0; height: 100%; width: 50%; overflow: hidden; }
.cmp-before-wrap .cmp-before { max-width: none; }
.cmp-tag { position: absolute; bottom: 14px; font-size: 10px; letter-spacing: .22em; text-transform: uppercase; color: #fff; background: rgba(0,0,0,.55); padding: 6px 12px; z-index: 4; }
.cmp-tag-l { left: 14px; } .cmp-tag-r { right: 14px; color: var(--gold); }
.cmp-handle { position: absolute; top: 0; left: 50%; height: 100%; width: 2px; background: var(--gold); transform: translateX(-1px); z-index: 5; pointer-events: none; }
.cmp-handle span {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
  width: 42px; height: 42px; border-radius: 50%; background: var(--gold); color: #0a0a0a;
  display: grid; place-items: center; font-size: 13px; letter-spacing: -1px; box-shadow: 0 4px 16px rgba(0,0,0,.5);
}

/* ---------- WhatsApp kayan buton ---------- */
#wa-float {
  position: fixed; right: 22px; bottom: 22px; z-index: 300; width: 56px; height: 56px; border-radius: 50%;
  background: #25d366; color: #fff; display: grid; place-items: center; box-shadow: 0 8px 24px rgba(0,0,0,.4);
  animation: waPop .4s cubic-bezier(.2,.7,.2,1) .8s both; transition: transform .25s;
}
#wa-float:hover { transform: scale(1.08); }
#wa-float::after { content: ''; position: absolute; inset: 0; border-radius: 50%; box-shadow: 0 0 0 0 rgba(37,211,102,.5); animation: waPulse 2.4s ease-out infinite; }
@keyframes waPop { from { opacity: 0; transform: scale(.5); } to { opacity: 1; transform: none; } }
@keyframes waPulse { 0% { box-shadow: 0 0 0 0 rgba(37,211,102,.5); } 70% { box-shadow: 0 0 0 16px rgba(37,211,102,0); } 100% { box-shadow: 0 0 0 0 rgba(37,211,102,0); } }
@media (max-width: 620px) { #wa-float { width: 50px; height: 50px; right: 16px; bottom: 16px; } }

/* ---------- Premium hareket (scroll reveal + hover) ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s cubic-bezier(.22,.7,.2,1), transform .8s cubic-bezier(.22,.7,.2,1); will-change: opacity, transform; }
.reveal.in { opacity: 1; transform: none; }

/* Buton — gold dolgu içeri kayar + ok hareketi */
.btn { position: relative; overflow: hidden; isolation: isolate; }
.btn::before { content: ''; position: absolute; inset: 0; background: var(--gold); transform: scaleX(0); transform-origin: left; transition: transform .4s cubic-bezier(.7,0,.2,1); z-index: -1; }
.btn:hover::before { transform: scaleX(1); }
.btn.gold::before { background: var(--gold-soft); }
.btn svg, .btn::after { transition: transform .3s; }

/* Hizmet kartı — kalkış + gold üst çizgi belirir */
.svc { position: relative; overflow: hidden; }
.svc::after { content: ''; position: absolute; top: 0; left: 0; height: 2px; width: 100%; background: linear-gradient(90deg, var(--gold), transparent); transform: scaleX(0); transform-origin: left; transition: transform .45s cubic-bezier(.7,0,.2,1); }
.svc:hover::after { transform: scaleX(1); }
.svc svg { transition: transform .4s cubic-bezier(.2,.7,.2,1); }
.svc:hover svg { transform: translateY(-3px) scale(1.06); }

/* Proje kartı — görsel zoom + alt gold çizgi + bilgi yukarı kayar */
.proj-card .info { transition: transform .4s cubic-bezier(.2,.7,.2,1); }
.proj-card::after { content: ''; position: absolute; left: 0; bottom: 0; height: 3px; width: 100%; background: var(--gold); transform: scaleX(0); transform-origin: left; transition: transform .45s cubic-bezier(.7,0,.2,1); z-index: 3; }
.proj-card:hover::after { transform: scaleX(1); }
.proj-card:hover .info { transform: translateY(-4px); }

/* Nav altÇizgi animasyonu */
.nav-links a { position: relative; }
.nav-links a::after { content: ''; position: absolute; left: 0; bottom: -1px; height: 1px; width: 100%; background: currentColor; transform: scaleX(0); transform-origin: left; transition: transform .3s; }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }

/* Galeri öğesi — hafif kalkış */
.gal-item { transition: transform .4s cubic-bezier(.2,.7,.2,1), border-color .3s; }
.gal-item:hover { transform: translateY(-4px); border-color: var(--line); }

/* İletişim satırı ikon */
.c-row svg { transition: transform .35s; }
a.c-row:hover svg { transform: scale(1.12); }

/* Hero yükleniş */
.hero-inner > * { animation: heroIn 1s cubic-bezier(.2,.7,.2,1) both; }
.hero-inner h1 { animation-delay: .15s; }
.hero-inner p { animation-delay: .35s; }
.hero-inner .hero-btns { animation-delay: .5s; }
@keyframes heroIn { from { opacity: 0; transform: translateY(22px); } to { opacity: 1; transform: none; } }

/* ---------- Katalog (flipbook) ---------- */
.flip-wrap { padding: 150px 0 70px; background: radial-gradient(ellipse at top, #141210 0%, var(--bg) 60%); min-height: 100vh; }
.flip-head { text-align: center; margin-bottom: 26px; }
.flip-head h1 { font-size: clamp(26px, 3.4vw, 40px); text-transform: uppercase; }
.flip-head h1 em { font-style: normal; color: var(--gold); }
.flip-head p { color: var(--muted); margin-top: 10px; font-size: 14px; }
.flip-stage { display: flex; align-items: center; justify-content: center; gap: 14px; padding: 0 12px; }
#flipbook { width: min(1120px, 94vw); touch-action: pan-y; }
#flipbook img { width: 100%; height: 100%; display: block; }
.flip-page-shadow { box-shadow: 0 20px 60px rgba(0,0,0,.6); }
.flip-nav {
  flex: none; width: 52px; height: 52px; border-radius: 50%; cursor: pointer;
  background: rgba(255,255,255,.04); border: 1px solid var(--line); color: var(--gold);
  font-size: 26px; line-height: 1; display: grid; place-items: center; transition: background .2s, color .2s;
}
.flip-nav:hover { background: var(--gold); color: #0a0a0a; }
.flip-controls { display: flex; align-items: center; justify-content: center; gap: 20px; margin-top: 26px; }
.flip-controls #k-count { font-size: 12px; letter-spacing: .18em; text-transform: uppercase; color: var(--cream); min-width: 120px; text-align: center; }
.flip-btn {
  background: none; border: 1px solid var(--line); color: var(--gold); cursor: pointer;
  font-family: var(--sans); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; padding: 10px 18px;
  display: inline-flex; align-items: center; gap: 8px; transition: background .2s, color .2s;
}
.flip-btn:hover { background: var(--gold); color: #0a0a0a; }
.flip-hint { text-align: center; color: var(--muted); font-size: 11px; letter-spacing: .1em; margin-top: 14px; opacity: .7; }
.flip-stage:fullscreen, .flip-wrap:fullscreen { background: #0a0a0a; display: flex; align-items: center; justify-content: center; }
/* CSS tam ekran (iOS Safari native fullscreen desteklemiyor) */
body.flip-fs-on .flip-stage { position: fixed; inset: 0; z-index: 9998; background: #0a0a0a; margin: 0; padding: 0 44px; }
body.flip-fs-on #flipbook { width: min(94vw, 66vh); }
body.flip-fs-on .site-header, body.flip-fs-on .flip-head, body.flip-fs-on .flip-controls, body.flip-fs-on .flip-hint, body.flip-fs-on footer { display: none; }
.k-fs-exit { display: none; }
body.flip-fs-on .k-fs-exit { display: flex; position: fixed; top: 14px; right: 16px; z-index: 9999; width: 44px; height: 44px; align-items: center; justify-content: center; border-radius: 50%; border: 1px solid rgba(255,255,255,.3); background: rgba(0,0,0,.65); color: #fff; font-size: 20px; cursor: pointer; }
/* Yakınlaştırılabilir sayfa okuyucu (mobil okunabilirlik) — sayfa ekrana sığar, iki parmakla yakınlaştırılır */
.k-zoom { position: fixed; inset: 0; z-index: 10000; background: #0b0b0b; }
.k-zoom[hidden] { display: none; }
.k-zoom-scroll { position: absolute; top: 0; left: 0; right: 0; bottom: 60px; overflow: hidden; display: flex; align-items: center; justify-content: center; gap: 0; padding: 10px; touch-action: pan-x pan-y pinch-zoom; }
.k-zoom-pg { display: none; width: auto; height: auto; max-height: 100%; object-fit: contain; box-shadow: 0 10px 40px rgba(0,0,0,.6); user-select: none; -webkit-user-drag: none; }
.k-zoom-pg.on { display: block; }
.k-zoom.single .k-zoom-pg.on { max-width: 96%; }
.k-zoom.spread .k-zoom-pg.on { max-width: 50%; }
.k-zoom-close { position: fixed; top: 14px; right: 16px; z-index: 10002; width: 44px; height: 44px; border-radius: 50%; border: 1px solid rgba(255,255,255,.25); background: rgba(20,18,16,.6); backdrop-filter: blur(6px); color: var(--cream); font-size: 18px; line-height: 1; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: background .2s, color .2s; }
.k-zoom-close:hover { background: var(--gold); color: #0a0a0a; }
.k-zoom-pdf { position: fixed; top: 14px; left: 16px; z-index: 10002; padding: 11px 18px; border-radius: 24px; border: 1px solid rgba(198,164,94,.55); background: rgba(20,18,16,.6); backdrop-filter: blur(6px); color: var(--gold); font-size: 11.5px; letter-spacing: .16em; text-transform: uppercase; text-decoration: none; display: inline-flex; align-items: center; gap: 7px; transition: background .2s, color .2s; }
.k-zoom-pdf:hover { background: var(--gold); color: #0a0a0a; }
.flip-tap { display: none; }
@media (max-width: 820px) {
  .flip-stage { position: relative; }
  .flip-tap { display: block; position: absolute; inset: 0 46px; z-index: 5; cursor: zoom-in; }
  .flip-nav { z-index: 6; }
}
.k-zoom-bar { position: fixed; left: 0; right: 0; bottom: 0; height: 60px; z-index: 10001; display: flex; align-items: center; justify-content: center; gap: 30px; background: linear-gradient(to top, rgba(10,9,8,.9), rgba(10,9,8,0)); }
.k-zoom-b { width: 42px; height: 42px; border-radius: 50%; border: 1px solid rgba(198,164,94,.5); background: rgba(20,18,16,.5); backdrop-filter: blur(6px); color: var(--gold); font-size: 22px; line-height: 1; cursor: pointer; display: flex; align-items: center; justify-content: center; -webkit-tap-highlight-color: transparent; transition: background .2s, color .2s; }
.k-zoom-b:active, .k-zoom-b:hover { background: var(--gold); color: #0a0a0a; }
.k-zoom-count { color: var(--cream); font-size: 12px; letter-spacing: .22em; min-width: 88px; text-align: center; text-transform: uppercase; }
.k-zoom-tip { position: fixed; left: 50%; bottom: 74px; transform: translateX(-50%); z-index: 10002; background: rgba(20,18,16,.82); backdrop-filter: blur(6px); color: var(--cream); font-size: 12px; letter-spacing: .04em; padding: 9px 18px; border-radius: 22px; border: 1px solid var(--line); pointer-events: none; max-width: 92vw; text-align: center; transition: opacity .6s; }
.k-zoom-tip.hide { opacity: 0; }
@media (min-width: 900px) { .k-zoom-tip { display: none; } }
@media (max-width: 720px) {
  .flip-wrap { padding: 120px 0 50px; }
  .flip-nav { width: 40px; height: 40px; font-size: 20px; }
  .flip-stage { gap: 6px; }
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .svc-grid, .proj-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-band .wrap { grid-template-columns: repeat(2, 1fr); }
  .feature:nth-child(odd) { border-left: 0; }
  .nav-links {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    background: rgba(9,9,8,.98); border-bottom: 1px solid var(--line-dim);
    flex-direction: column; gap: 0; padding: 10px 24px 20px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { display: block; padding: 12px 0; }
  .nav-toggle { display: block; }
}
@media (max-width: 960px) {
  .pd-layout, .about-layout, .contact-layout { grid-template-columns: 1fr; }
  .gal-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) {
  section { padding: 64px 0; }
  .svc-grid, .proj-grid, .gal-grid { grid-template-columns: 1fr; }
  .stats .wrap { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(odd) { border-left: 0; }
  .feature-band .wrap { grid-template-columns: 1fr; }
  .feature { border-left: 0; }
  .page-head { padding: 130px 0 20px; }
}