:root {
  --bar: 80px;
  --pad: clamp(20px, 4vw, 56px);
  --ink: #0E0F12;
  --text: #3B3E45;
  --muted: #74777F;
  --line: #E8E8E5;
  --tint: #F3F3F1;
  /* Helvetica: Mac ve iPhone'da yüklü; diğer cihazlarda en yakın karşılığı olan Arial kullanılır. */
  --sans: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --display: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: var(--bar); }
body {
  margin: 0; background: #fff; color: var(--ink);
  font: 400 16px/1.6 var(--sans);
  font-feature-settings: "calt", "kern";
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
::selection { background: var(--ink); color: #fff; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.wrap { width: 100%; max-width: 1440px; margin-inline: auto; padding-inline: var(--pad); }

/* ---------- Üst bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  padding-top: env(safe-area-inset-top, 0px);
  background: #fff;
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease;
}
.topbar.is-scrolled { border-bottom-color: var(--line); }
.topbar-in {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  height: calc(var(--bar) - 1px); padding-inline: var(--pad);
}
.brand { display: inline-flex; align-items: center; min-width: 0; text-decoration: none; }
.brand img { display: block; width: auto; max-width: min(55vw, 320px); object-fit: contain; }
.brand-text { font: 500 20px/1.2 var(--display); letter-spacing: -0.01em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.contact {
  display: inline-flex; align-items: center; flex: none; min-height: 44px;
  color: var(--ink); text-decoration: none;
  font-size: 16px; font-weight: 500; white-space: nowrap;
}

/* ---------- Hero ----------
   Slider'ın oranı yüklenen resimlerden gelir (index.php): her ekran genişliğinde resim
   kesilmeden, boşluk kalmadan görünür. Oranı çok farklı bir resim beyaz zemine ortalanır. */
.hero {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #fff;
  color: #fff;
  touch-action: pan-y;
}
.hero :focus-visible { outline: 2px solid #fff; outline-offset: 3px; }

.slide { position: absolute; inset: 0; margin: 0; opacity: 0; transition: opacity 1.2s ease; }
.slide.is-active { opacity: 1; }
.slide img, .slide video {
  display: block; width: 100%; height: 100%;
  object-fit: contain;
}
.slide.is-fill img, .slide.is-fill video { object-fit: cover; }

.nav-arw {
  --s: clamp(52px, 4.6vw, 72px);
  position: absolute; z-index: 3; top: 50%;
  display: grid; place-items: center;
  width: var(--s); height: var(--s); margin-top: calc(var(--s) / -2); padding: 0;
  border: 1px solid rgba(255, 255, 255, .4); border-radius: 50%;
  background: rgba(10, 12, 18, .2);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  color: #fff; cursor: pointer;
  transition: background-color .4s ease, border-color .4s ease, color .4s ease;
}
.nav-arw.to-prev { left: var(--pad); }
.nav-arw.to-next { right: var(--pad); }
.nav-arw:hover { background: #fff; border-color: #fff; color: #07090E; }
.nav-arw svg {
  fill: none; stroke: currentColor; stroke-width: 1.3; stroke-linecap: round; stroke-linejoin: round;
  transition: transform .45s cubic-bezier(.2, .7, .2, 1);
}
.nav-arw.to-prev:hover svg { transform: translateX(-5px); }
.nav-arw.to-next:hover svg { transform: translateX(5px); }


/* ---------- Hakkımda: tek parça, büyük harfli metin ---------- */
.about { padding-block: clamp(56px, 7vw, 120px); }
.about-text {
  font: 500 clamp(24px, 2.25vw, 42px)/1.12 var(--display);
  letter-spacing: -0.012em;
  text-transform: uppercase;
  text-wrap: pretty;
}
.about-text p { margin: 0; }
.about-text p + p { margin-top: .75em; }

/* ---------- İşler ---------- */
.works { padding-bottom: clamp(56px, 7vw, 120px); }
.work-grid {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(12px, 1.6vw, 24px); margin: 0; padding: 0; list-style: none;
}
.work a { position: relative; display: block; aspect-ratio: 4 / 5; overflow: hidden; background: var(--tint); }
.work img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform 1.1s var(--ease); }
.work a::after { content: ""; position: absolute; inset: 0; background: #000; opacity: 0; transition: opacity .5s ease; pointer-events: none; }
.work a:hover img { transform: scale(1.04); }
.work a:hover::after { opacity: .08; }
.work a:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }

/* ---------- İş sayfası ---------- */
.back {
  display: inline-flex; align-items: center; gap: 12px; min-height: 44px;
  color: var(--muted); font-size: 15px; font-weight: 500; text-decoration: none;
  transition: color .25s ease;
}
.back:hover { color: var(--ink); }
.back svg, .pager svg { fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; transition: transform .45s var(--ease); }
.back:hover svg { transform: translateX(-4px); }

.project { padding-top: clamp(20px, 3vw, 40px); }
.project-head {
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 24px clamp(40px, 6vw, 120px); align-items: start;
  margin: clamp(24px, 3vw, 40px) 0 clamp(40px, 5vw, 80px);
}
.project-cat { margin: 0 0 14px; color: var(--muted); font-size: 15px; font-weight: 500; }
.project-title { margin: 0; font: 500 clamp(40px, 6.2vw, 92px)/0.98 var(--display); letter-spacing: -0.035em; text-wrap: balance; overflow-wrap: anywhere; }
.project-desc { max-width: 36em; color: var(--text); font-size: clamp(17px, 1.35vw, 20px); line-height: 1.65; }
.project-cat + .project-title { margin-top: 0; }
.project-head > div:first-child { min-width: 0; }
.project-desc p { margin: 0 0 1em; }
.project-desc p:last-child { margin-bottom: 0; }
@media (min-width: 901px) { .project-desc { padding-top: 38px; } }

.gallery { display: grid; gap: clamp(16px, 2vw, 28px); }
.gallery figure { margin: 0; background: var(--tint); }
.gallery img { display: block; width: 100%; height: auto; }
/* Dikey ve kare resimler ekrana sığacak boyutta, ortalanmış bir çerçeve içinde gösterilir. */
.gallery figure.is-tall { display: flex; justify-content: center; padding: clamp(20px, 4vw, 64px); }
.gallery figure.is-tall img { width: auto; max-width: 100%; max-height: calc(100vh - var(--bar) - 2 * clamp(20px, 4vw, 64px) - 24px); }

.pager {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
  margin-top: clamp(64px, 8vw, 120px); padding-block: 32px clamp(64px, 8vw, 120px);
  border-top: 1px solid var(--line);
}
.pager-link { display: grid; gap: 10px; text-decoration: none; }
.pager-link.is-next { justify-items: end; text-align: right; }
.pager-label { display: inline-flex; align-items: center; gap: 12px; color: var(--muted); font-size: 14px; font-weight: 500; }
.pager-title { font: 500 clamp(22px, 2.6vw, 36px)/1.15 var(--display); letter-spacing: -0.02em; }
.pager-link.is-prev:hover svg { transform: translateX(-4px); }
.pager-link.is-next:hover svg { transform: translateX(4px); }
.pager-link:hover .pager-title { text-decoration: underline; text-underline-offset: 6px; text-decoration-thickness: 1px; }

.notfound { padding-block: clamp(80px, 12vw, 180px); }
.notfound h1 { margin: 0 0 12px; font: 500 clamp(32px, 4vw, 56px)/1.05 var(--display); letter-spacing: -0.03em; }
.notfound p { margin: 0 0 24px; color: var(--text); }

/* ---------- Alt bilgi ---------- */
.footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.footer-in {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 24px;
  min-height: 80px; padding-block: 20px calc(20px + env(safe-area-inset-bottom, 0px));
}
.footer a { text-decoration: none; }
.footer a:hover { color: var(--ink); }

/* ---------- Ekran boyutları ---------- */
@media (max-width: 1000px) {
  .work-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
  .project-head { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 640px) {
  .nav-arw { --s: 40px; }
  .nav-arw.to-prev { left: 12px; }
  .nav-arw.to-next { right: 12px; }
  .work-grid { grid-template-columns: minmax(0, 1fr); }
  .about-text { font-size: clamp(19px, 5.4vw, 24px); line-height: 1.14; }
  .pager { grid-template-columns: minmax(0, 1fr); }
  .pager-link.is-next { justify-items: start; text-align: left; grid-row: 1; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .slide, .work img { transition: none; }
}