/* ==========================================================================
   XRE Mimarlık — site.css
   Sade, bol beyaz alanlı, büyük tipografili. Vurgu: terracotta + beton grisi.
   ========================================================================== */

:root {
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --soft: #f5f5f7;
  --line: #e7e7eb;
  --bg: #ffffff;
  --accent: #a4552f;        /* terracotta */
  --accent-dark: #85411f;
  --accent-light: #f0b99a;  /* koyu zeminlerde */
  --accent-soft: #f6ebe4;
  --concrete: #8b8a86;
  --radius: 28px;
  --radius-sm: 16px;
  --wrap: 1160px;
  --gutter: clamp(20px, 4vw, 32px);
  --header-h: 76px;
  --font: -apple-system, "SF Pro Display", "Segoe UI", Arial, sans-serif;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }
body {
  margin: 0; font-family: var(--font); color: var(--ink); background: var(--bg);
  line-height: 1.6; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
body.nav-open, body.lb-open { overflow: hidden; }
img, svg { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
h1, h2, h3, h4 { margin: 0; line-height: 1.08; letter-spacing: -.03em; font-weight: 700; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
::selection { background: var(--accent); color: #fff; }

.wrap { width: min(100% - 2 * var(--gutter), var(--wrap)); margin-inline: auto; }
.skip-link {
  position: fixed; left: 16px; top: -80px; z-index: 200; background: var(--ink); color: #fff;
  padding: 12px 18px; border-radius: 999px; font-weight: 600; transition: top .2s;
}
.skip-link:focus { top: 12px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- Kaydırma çubuğu (üstte) ---------- */
.progress { position: fixed; inset: 0 0 auto 0; height: 3px; z-index: 120; pointer-events: none; }
.progress span { display: block; height: 100%; background: var(--accent); transform-origin: 0 50%; transform: scaleX(0); }

/* ---------- Üst menü ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100; height: var(--header-h);
  border-bottom: 1px solid transparent; transition: border-color .3s;
}
/* Bulanıklık ::before üzerinde: header'a doğrudan backdrop-filter verirseniz mobil menü (position: fixed) header'ın içine hapsolur. */
.site-header::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: rgba(255, 255, 255, .82); -webkit-backdrop-filter: saturate(180%) blur(20px); backdrop-filter: saturate(180%) blur(20px);
  transition: background .3s;
}
.site-header.is-scrolled { border-bottom-color: var(--line); }
.site-header.is-scrolled::before { background: rgba(255, 255, 255, .92); }
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 14px; flex: none; position: relative; }
.brand img { height: 46px; width: auto; }
.brand sup { position: absolute; left: 79px; top: 8px; font-size: 9px; font-weight: 600; color: var(--ink); line-height: 1; }
.brand-tag {
  font-size: 10px; letter-spacing: .18em; text-transform: uppercase; line-height: 1.45; color: var(--muted);
  padding-left: 14px; border-left: 1px solid var(--line); margin-left: 4px;
}
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav > a, .nav-dropdown > summary {
  display: inline-flex; align-items: center; gap: 6px; padding: 10px 14px; border-radius: 999px;
  font-size: .94rem; font-weight: 500; color: var(--ink); cursor: pointer; list-style: none; transition: background .2s, color .2s;
}
.nav-dropdown > summary::-webkit-details-marker { display: none; }
.main-nav > a:hover, .nav-dropdown > summary:hover { background: var(--soft); }
.main-nav > a[aria-current="page"] { color: var(--accent); font-weight: 600; }
.chevron { width: 12px; height: 12px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; transition: transform .25s var(--ease); }
.nav-dropdown[open] .chevron { transform: rotate(180deg); }
.nav-dropdown { position: relative; }
.dropdown-panel {
  position: absolute; right: 0; top: calc(100% + 12px); width: 340px; padding: 14px;
  background: #fff; border: 1px solid var(--line); border-radius: 24px; box-shadow: 0 24px 60px rgba(0, 0, 0, .12);
  animation: pop .22s var(--ease);
}
@keyframes pop { from { opacity: 0; transform: translateY(-6px) scale(.985); } to { opacity: 1; transform: none; } }
.dropdown-label { display: block; padding: 6px 12px 10px; font-size: .7rem; letter-spacing: .16em; font-weight: 600; color: var(--muted); }
.dropdown-panel a { display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: 16px; transition: background .2s; }
.dropdown-panel a:hover { background: var(--soft); }
.eco-mark { flex: none; width: 36px; height: 36px; border-radius: 11px; background: var(--accent-soft); color: var(--accent); display: grid; place-items: center; font-weight: 700; font-size: .82rem; letter-spacing: -.02em; }
.dropdown-panel strong { display: block; font-size: .95rem; line-height: 1.25; }
.dropdown-panel small { display: block; color: var(--muted); font-size: .8rem; }
.dropdown-panel .ext { margin-left: auto; color: var(--concrete); font-size: .9rem; }
.menu-toggle { display: none; width: 44px; height: 44px; border-radius: 50%; border: 0; background: var(--soft); position: relative; }
.menu-toggle span { position: absolute; left: 13px; right: 13px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform .3s var(--ease), opacity .2s; }
.menu-toggle span:nth-child(1) { top: 16px; }
.menu-toggle span:nth-child(2) { top: 21px; }
.menu-toggle span:nth-child(3) { top: 26px; }
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

@media (max-width: 960px) {
  .menu-toggle { display: block; }
  .brand-tag { display: none; }
  .main-nav {
    position: fixed; inset: var(--header-h) 0 0 0; background: #fff; flex-direction: column; align-items: stretch; gap: 0;
    padding: 12px var(--gutter) 40px; overflow-y: auto; transform: translateY(-8px); opacity: 0; visibility: hidden;
    transition: opacity .25s, transform .3s var(--ease), visibility .25s;
  }
  body.nav-open .main-nav { opacity: 1; transform: none; visibility: visible; }
  .main-nav > a, .nav-dropdown > summary { font-size: 1.5rem; font-weight: 600; letter-spacing: -.02em; padding: 16px 4px; border-radius: 0; border-bottom: 1px solid var(--line); justify-content: space-between; }
  .main-nav > a:hover, .nav-dropdown > summary:hover { background: none; }
  .nav-dropdown > summary { display: flex; }
  .dropdown-panel { position: static; width: auto; box-shadow: none; border: 0; padding: 8px 0 0; animation: none; }
}

/* ---------- Butonlar ve bağlantılar ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 15px 28px; border-radius: 999px;
  font-weight: 600; font-size: 1rem; border: 1.5px solid transparent; transition: transform .25s var(--ease), background .25s, color .25s, border-color .25s;
}
.btn:hover { transform: translateY(-2px); }
.btn--primary { background: var(--ink); color: #fff; }
.btn--primary:hover { background: #000; }
.btn--accent { background: var(--accent); color: #fff; }
.btn--accent:hover { background: var(--accent-dark); }
.btn--ghost { border-color: rgba(255, 255, 255, .55); color: #fff; backdrop-filter: blur(8px); background: rgba(255, 255, 255, .08); }
.btn--ghost:hover { background: rgba(255, 255, 255, .2); }
.btn--outline { border-color: var(--line); background: #fff; }
.btn--outline:hover { border-color: var(--ink); }
.btn--white { background: #fff; color: var(--ink); }
.btn--white:hover { background: var(--accent-soft); }
.btn--ghost-dark { border-color: rgba(255, 255, 255, .3); color: #fff; }
.btn--ghost-dark:hover { border-color: #fff; }
.text-link { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; color: var(--accent); transition: gap .25s var(--ease); }
.text-link:hover { gap: 14px; }
.chip {
  display: inline-block; padding: 4px 12px; border-radius: 999px; background: var(--accent-soft); color: var(--accent-dark);
  font-size: .75rem; font-weight: 600; letter-spacing: .02em;
}
.chip--light { background: rgba(255, 255, 255, .92); color: var(--ink); }

/* ---------- Bölümler ---------- */
.section { padding-block: clamp(72px, 10vw, 140px); }
.section--soft { background: var(--soft); }
.section-head { max-width: 760px; margin-bottom: clamp(36px, 5vw, 64px); }
.section-head--row { max-width: none; display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.eyebrow { font-size: .76rem; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; color: var(--accent); margin-bottom: 18px; }
h1 { font-size: clamp(2.6rem, 7vw, 5.4rem); letter-spacing: -.045em; line-height: 1.02; }
h2 { font-size: clamp(2rem, 4.6vw, 3.4rem); letter-spacing: -.04em; }
h3 { font-size: 1.3rem; letter-spacing: -.02em; line-height: 1.2; }
.lead { font-size: clamp(1.1rem, 1.6vw, 1.35rem); color: var(--muted); line-height: 1.55; margin-top: 20px; max-width: 640px; }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: calc(100svh - var(--header-h)); display: flex; align-items: flex-end; color: #fff;
  background: #2b2623; overflow: hidden; isolation: isolate;
}
.hero-slides { position: absolute; inset: 0; z-index: -2; }
.hero-slide { position: absolute; inset: 0; opacity: 0; transition: opacity 1.8s var(--ease); margin: 0; }
.hero-slide.is-active { opacity: 1; }
.hero-slide img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.02); }
.hero-slide.is-active img { animation: kenburns 16s ease-out forwards; }
@keyframes kenburns { from { transform: scale(1.02); } to { transform: scale(1.1); } }
.hero-shade { position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, rgba(20,16,14,.38) 0%, rgba(20,16,14,.12) 38%, rgba(20,16,14,.78) 100%); }
.hero-copy { padding-block: clamp(56px, 9vw, 120px) clamp(96px, 11vw, 140px); }
.hero .eyebrow { color: var(--accent-light); }
.hero h1 { max-width: 14ch; }
.hero h1 em { font-style: normal; color: var(--accent-light); }
.hero .lead { color: rgba(255, 255, 255, .86); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
.hero-controls { position: absolute; right: var(--gutter); bottom: 32px; display: flex; align-items: center; gap: 10px; }
.hero-dots { display: flex; gap: 8px; }
.hero-dots button { width: 34px; height: 4px; padding: 0; border: 0; border-radius: 4px; background: rgba(255, 255, 255, .4); transition: background .3s, width .3s; position: relative; }
.hero-dots button::after { content: ""; position: absolute; inset: -14px -2px; }
.hero-dots button[aria-current="true"] { background: #fff; width: 52px; }
.hero-pause { width: 34px; height: 34px; border-radius: 50%; border: 1.5px solid rgba(255, 255, 255, .5); background: rgba(255, 255, 255, .1); display: grid; place-items: center; }
.hero-pause svg { width: 12px; height: 12px; fill: #fff; }
.hero-pause .i-play { display: none; }
.hero-pause[aria-pressed="true"] .i-play { display: block; }
.hero-pause[aria-pressed="true"] .i-pause { display: none; }
.hero-scroll { position: absolute; left: var(--gutter); bottom: 32px; font-size: .75rem; letter-spacing: .16em; text-transform: uppercase; color: rgba(255, 255, 255, .7); display: flex; align-items: center; gap: 12px; }
.hero-scroll::after { content: ""; width: 1px; height: 36px; background: linear-gradient(#fff, transparent); animation: drip 2.2s ease-in-out infinite; transform-origin: top; }
@keyframes drip { 0% { transform: scaleY(0); } 60% { transform: scaleY(1); } 100% { transform: scaleY(1); opacity: 0; } }
@media (max-width: 640px) { .hero-scroll { display: none; } .hero-controls { left: var(--gutter); right: auto; } }

/* ---------- Görünme animasyonu ---------- */
.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity .9s var(--ease) var(--d, 0ms), transform .9s var(--ease) var(--d, 0ms); }
.js .reveal.is-in { opacity: 1; transform: none; }

/* ---------- Hizmetler ---------- */
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.service-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 36px 32px 40px; display: flex; flex-direction: column; gap: 56px;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s;
}
.service-card:hover { transform: translateY(-6px); box-shadow: 0 24px 50px rgba(0, 0, 0, .07); border-color: transparent; }
.service-card .num { font-size: .95rem; font-weight: 700; letter-spacing: .1em; color: var(--accent); }
.service-card h3 { margin-bottom: 12px; }
.service-card p { color: var(--muted); font-size: .98rem; }
@media (max-width: 960px) { .service-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .service-grid { grid-template-columns: 1fr; } .service-card { gap: 32px; } }

/* ---------- Filtre ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-btn {
  padding: 10px 20px; border-radius: 999px; border: 1px solid var(--line); background: #fff; font-size: .92rem; font-weight: 500;
  transition: background .2s, color .2s, border-color .2s;
}
.filter-btn:hover { border-color: var(--ink); }
.filter-btn[aria-pressed="true"] { background: var(--ink); color: #fff; border-color: var(--ink); }

/* ---------- Proje ızgarası ---------- */
.project-grid { display: grid; grid-template-columns: repeat(12, 1fr); grid-auto-rows: clamp(300px, 38vw, 500px); gap: 20px; margin-top: 36px; }
.project-card { position: relative; grid-column: span 6; border-radius: var(--radius); overflow: hidden; background: var(--soft); display: block; }
.project-grid > .project-card:nth-child(4n+1), .project-grid > .project-card:nth-child(4n+4) { grid-column: span 7; }
.project-grid > .project-card:nth-child(4n+2), .project-grid > .project-card:nth-child(4n+3) { grid-column: span 5; }
.project-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s var(--ease); }
.project-card:hover img, .project-card:focus-visible img { transform: scale(1.06); }
.project-card__over {
  position: absolute; inset: auto 0 0 0; padding: 72px 28px 26px; color: #fff; display: flex; flex-direction: column; align-items: flex-start; gap: 8px;
  background: linear-gradient(transparent, rgba(15, 12, 10, .78)); transition: opacity .4s var(--ease), transform .4s var(--ease);
}
.project-card__over strong { font-size: clamp(1.25rem, 2vw, 1.7rem); letter-spacing: -.025em; line-height: 1.15; }
.project-card__over span:last-child { font-size: .95rem; color: rgba(255, 255, 255, .85); }
@media (hover: hover) {
  .project-card__over { opacity: 0; transform: translateY(14px); }
  .project-card:hover .project-card__over, .project-card:focus-visible .project-card__over { opacity: 1; transform: none; }
}
@media (max-width: 900px) {
  .project-grid { grid-template-columns: repeat(2, 1fr); grid-auto-rows: clamp(260px, 52vw, 380px); }
  .project-grid > .project-card:nth-child(n) { grid-column: span 1; }
}
@media (max-width: 600px) {
  .project-grid { grid-template-columns: 1fr; grid-auto-rows: 320px; }
  .project-grid > .project-card:nth-child(n) { grid-column: span 1; }
}
.empty { padding: 56px 0; text-align: center; color: var(--muted); }

/* ---------- Süreç ---------- */
.process { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; position: relative; counter-reset: step; }
.process::before { content: ""; position: absolute; left: 6%; right: 6%; top: 22px; height: 2px; background: var(--line); }
.process::after {
  content: ""; position: absolute; left: 6%; top: 22px; height: 2px; width: 88%; background: var(--accent);
  transform: scaleX(0); transform-origin: 0 50%; transition: transform 1.8s var(--ease) .2s;
}
.process.is-in::after { transform: scaleX(1); }
.step { position: relative; padding-top: 70px; counter-increment: step; }
.step::before {
  content: counter(step); position: absolute; top: 0; left: 0; width: 46px; height: 46px; border-radius: 50%; background: #fff; border: 2px solid var(--accent);
  color: var(--accent); display: grid; place-items: center; font-weight: 700; z-index: 1;
}
.step h3 { margin-bottom: 8px; }
.step p { color: var(--muted); font-size: .95rem; }
@media (max-width: 900px) {
  .process { grid-template-columns: 1fr; gap: 0; }
  .process::before, .process::after { left: 22px; right: auto; top: 20px; bottom: 20px; width: 2px; height: auto; }
  .process::after { transform: scaleY(0); transform-origin: 50% 0; width: 2px; left: 22px; height: calc(100% - 40px); }
  .process.is-in::after { transform: scaleY(1); }
  .step { padding: 0 0 36px 78px; }
}

/* ---------- Rakamlar ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat { border-top: 2px solid var(--ink); padding-top: 22px; }
.stat strong { display: block; font-size: clamp(2.6rem, 6vw, 4.6rem); font-weight: 700; letter-spacing: -.05em; line-height: 1; font-variant-numeric: tabular-nums; }
.stat span { display: block; margin-top: 12px; color: var(--muted); font-size: .98rem; }
@media (max-width: 800px) { .stats { grid-template-columns: repeat(2, 1fr); gap: 36px 20px; } }

/* ---------- Hakkımızda özeti / iki sütun ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 96px); align-items: center; }
.split--top { align-items: start; }
.split figure { margin: 0; border-radius: var(--radius); overflow: hidden; aspect-ratio: 4 / 5; background: var(--soft); }
.split figure img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.4s var(--ease); }
.split figure:hover img { transform: scale(1.04); }
.split .text-link { margin-top: 28px; }
.split p + p { margin-top: 16px; }
.split .body-text { color: var(--muted); font-size: 1.08rem; margin-top: 20px; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } .split figure { aspect-ratio: 4 / 3; } }

/* ---------- Blog kartları ---------- */
.post-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px 24px; }
.post-card { display: flex; flex-direction: column; }
.post-card__img { display: block; border-radius: var(--radius); overflow: hidden; aspect-ratio: 16 / 10; background: var(--soft); margin-bottom: 22px; }
.post-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.1s var(--ease); }
.post-card:hover .post-card__img img { transform: scale(1.06); }
.post-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 12px; font-size: .84rem; color: var(--muted); margin-bottom: 12px; }
.post-card h3 { font-size: 1.35rem; margin-bottom: 10px; }
.post-card h3 a:hover { color: var(--accent); }
.post-card p.excerpt { color: var(--muted); font-size: .97rem; margin-bottom: 18px; flex: 1; }
@media (max-width: 960px) { .post-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .post-grid { grid-template-columns: 1fr; } }

/* ---------- İletişim çağrısı ---------- */
.cta {
  background: var(--ink); color: #fff; border-radius: var(--radius); padding: clamp(40px, 7vw, 96px); position: relative; overflow: hidden; isolation: isolate;
}
.cta::before { content: ""; position: absolute; width: 560px; height: 560px; right: -160px; top: -200px; border-radius: 50%; background: radial-gradient(circle, rgba(164, 85, 47, .55), transparent 68%); z-index: -1; }
.cta h2 { max-width: 14ch; }
.cta .lead { color: rgba(255, 255, 255, .72); }
.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
.cta-lines { margin-top: 44px; display: flex; flex-wrap: wrap; gap: 14px 40px; color: rgba(255, 255, 255, .72); font-size: .98rem; }
.cta-lines a:hover { color: #fff; }

/* ---------- Footer ---------- */
.site-footer { background: var(--soft); padding-top: clamp(56px, 8vw, 96px); margin-top: clamp(56px, 8vw, 100px); }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.3fr; gap: 40px; padding-bottom: 56px; }
.footer-brand img { height: 64px; width: auto; margin-bottom: 20px; }
.footer-brand p { color: var(--muted); font-size: .94rem; max-width: 34ch; }
.footer-brand .slogan { margin-top: 14px; color: var(--accent); font-weight: 600; }
.footer-title { font-size: .72rem; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); margin-bottom: 18px; font-weight: 600; }
.footer-grid li + li { margin-top: 10px; }
.footer-grid li a, .footer-contact a { font-size: .96rem; transition: color .2s; }
.footer-grid li a:hover, .footer-contact a:hover { color: var(--accent); }
.footer-contact { font-size: .96rem; display: grid; gap: 10px; font-style: normal; }
.footer-contact span { color: var(--muted); }
.footer-social { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.footer-social a { padding: 7px 14px; border-radius: 999px; background: #fff; border: 1px solid var(--line); font-size: .84rem; font-weight: 500; transition: border-color .2s, color .2s; }
.footer-social a:hover { border-color: var(--accent); color: var(--accent); }
.footer-bottom { border-top: 1px solid var(--line); padding-block: 26px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; color: var(--muted); font-size: .86rem; }
@media (max-width: 960px) { .footer-grid { grid-template-columns: 1fr 1fr; } .footer-brand { grid-column: 1 / -1; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }

/* ---------- İç sayfa başlığı ---------- */
.page-hero { padding-block: clamp(56px, 8vw, 112px) clamp(28px, 4vw, 48px); }
.page-hero h1 { max-width: 16ch; }
.page-hero--wide h1 { max-width: 20ch; }

/* ---------- Proje detayı ---------- */
.crumbs { display: flex; flex-wrap: wrap; gap: 8px; font-size: .88rem; color: var(--muted); margin-bottom: 28px; }
.crumbs a:hover { color: var(--accent); }
.project-cover { margin: 0; border-radius: var(--radius); overflow: hidden; aspect-ratio: 16 / 8.5; background: var(--soft); }
.project-cover img { width: 100%; height: 100%; object-fit: cover; }
.project-layout { display: grid; grid-template-columns: 340px 1fr; gap: clamp(32px, 6vw, 96px); padding-top: clamp(40px, 6vw, 80px); align-items: start; }
.info-box { position: sticky; top: calc(var(--header-h) + 24px); background: var(--soft); border-radius: var(--radius); padding: 32px; }
.info-box dl { margin: 0; display: grid; gap: 0; }
.info-box div { padding: 14px 0; border-bottom: 1px solid var(--line); }
.info-box div:first-child { padding-top: 0; }
.info-box div:last-of-type { border-bottom: 0; }
.info-box dt { font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
.info-box dd { margin: 4px 0 0; font-size: 1.08rem; font-weight: 600; }
.info-box .btn { margin-top: 24px; width: 100%; }
.prose { max-width: 720px; }
.prose p { color: #3b3b40; font-size: 1.12rem; line-height: 1.75; }
.prose p + p { margin-top: 1.25em; }
.prose h2 { font-size: clamp(1.6rem, 3vw, 2.1rem); margin: 2em 0 .6em; }
.prose h3 { margin: 1.8em 0 .5em; }
.prose figure { margin: 2.2em 0; }
.prose figure img { width: 100%; border-radius: var(--radius-sm); background: var(--soft); }
.prose figcaption { margin-top: 10px; font-size: .88rem; color: var(--muted); }
.prose blockquote { margin: 2em 0; padding: 8px 0 8px 28px; border-left: 3px solid var(--accent); font-size: 1.4rem; line-height: 1.4; letter-spacing: -.02em; font-weight: 500; color: var(--ink); }
.prose blockquote cite { display: block; margin-top: 12px; font-size: .9rem; color: var(--muted); font-style: normal; font-weight: 400; letter-spacing: 0; }
.prose ul.prose-list { margin: 1.2em 0; display: grid; gap: 10px; }
.prose ul.prose-list li { position: relative; padding-left: 28px; color: #3b3b40; font-size: 1.08rem; line-height: 1.65; }
.prose ul.prose-list li::before { content: ""; position: absolute; left: 4px; top: .7em; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
@media (max-width: 900px) { .project-layout { grid-template-columns: 1fr; } .info-box { position: static; } .project-cover { aspect-ratio: 4 / 3; } }

.gallery { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.gallery button { padding: 0; border: 0; border-radius: var(--radius-sm); overflow: hidden; background: var(--soft); aspect-ratio: 4 / 3; grid-column: span 2; position: relative; }
.gallery button:nth-child(5n+1) { grid-column: span 4; aspect-ratio: 16 / 9; }
.gallery button:nth-child(5n+2) { grid-column: span 2; aspect-ratio: auto; }
.gallery img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s var(--ease); }
.gallery button:hover img { transform: scale(1.06); }
.gallery button::after { content: "⤢"; position: absolute; right: 14px; top: 14px; width: 34px; height: 34px; border-radius: 50%; background: rgba(255, 255, 255, .92); display: grid; place-items: center; font-size: 1rem; opacity: 0; transition: opacity .3s; }
.gallery button:hover::after, .gallery button:focus-visible::after { opacity: 1; }
@media (max-width: 700px) { .gallery { grid-template-columns: repeat(2, 1fr); } .gallery button, .gallery button:nth-child(n) { grid-column: span 1; aspect-ratio: 4 / 3; } .gallery button:nth-child(5n+1) { grid-column: 1 / -1; aspect-ratio: 16 / 10; } }

/* Lightbox */
.lightbox { position: fixed; inset: 0; z-index: 300; background: rgba(12, 10, 9, .94); display: flex; align-items: center; justify-content: center; padding: 64px 72px; animation: fade .25s; }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
.lightbox figure { margin: 0; max-width: 100%; max-height: 100%; display: flex; flex-direction: column; align-items: center; gap: 16px; touch-action: pan-y; }
.lightbox img { max-height: calc(100vh - 160px); max-width: 100%; width: auto; height: auto; object-fit: contain; border-radius: 12px; }
.lightbox figcaption { color: rgba(255, 255, 255, .8); font-size: .95rem; text-align: center; }
.lb-btn { position: absolute; width: 52px; height: 52px; border-radius: 50%; border: 0; background: rgba(255, 255, 255, .12); color: #fff; font-size: 1.7rem; line-height: 1; display: grid; place-items: center; transition: background .2s; }
.lb-btn:hover { background: rgba(255, 255, 255, .26); }
.lb-close { top: 16px; right: 16px; }
.lb-prev { left: 16px; top: 50%; transform: translateY(-50%); }
.lb-next { right: 16px; top: 50%; transform: translateY(-50%); }
.lb-count { position: absolute; top: 28px; left: 28px; color: rgba(255, 255, 255, .7); font-size: .9rem; font-variant-numeric: tabular-nums; }
@media (max-width: 700px) { .lightbox { padding: 72px 12px 56px; } .lb-prev, .lb-next { top: auto; bottom: 8px; transform: none; } .lb-prev { left: calc(50% - 64px); } .lb-next { right: calc(50% - 64px); } }

/* Önce / Sonra */
.compare { --pos: 50%; position: relative; border-radius: var(--radius); overflow: hidden; aspect-ratio: 16 / 9; background: var(--soft); user-select: none; touch-action: pan-y; }
.compare img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.compare .cmp-before { clip-path: inset(0 calc(100% - var(--pos)) 0 0); }
.compare .cmp-tag { position: absolute; top: 20px; padding: 6px 14px; border-radius: 999px; background: rgba(15, 12, 10, .65); color: #fff; font-size: .8rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; pointer-events: none; }
.compare .cmp-tag--b { left: 20px; }
.compare .cmp-tag--a { right: 20px; }
.compare .cmp-handle { position: absolute; top: 0; bottom: 0; left: var(--pos); width: 3px; margin-left: -1.5px; background: #fff; pointer-events: none; }
.compare .cmp-handle::after { content: "↔"; position: absolute; top: 50%; left: 50%; width: 48px; height: 48px; margin: -24px 0 0 -24px; border-radius: 50%; background: #fff; display: grid; place-items: center; font-size: 1.2rem; box-shadow: 0 6px 24px rgba(0, 0, 0, .25); }
.compare input { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: ew-resize; }
.compare:focus-within { outline: 3px solid var(--accent); outline-offset: 3px; }
@media (max-width: 700px) { .compare { aspect-ratio: 4 / 3; } }

/* ---------- Blog ---------- */
.blog-tools { display: flex; flex-wrap: wrap; gap: 16px 24px; align-items: center; justify-content: space-between; margin-bottom: 40px; }
.search { position: relative; flex: 0 1 340px; width: 100%; }
.search input { width: 100%; padding: 14px 20px 14px 48px; border-radius: 999px; border: 1px solid var(--line); background: #fff; font: inherit; transition: border-color .2s, box-shadow .2s; }
.search input:focus { outline: 0; border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.search svg { position: absolute; left: 18px; top: 50%; width: 18px; height: 18px; margin-top: -9px; fill: none; stroke: var(--muted); stroke-width: 2; stroke-linecap: round; }
.result-count { color: var(--muted); font-size: .9rem; margin-bottom: 24px; min-height: 1.4em; }

.article-head { max-width: 860px; }
.article-head h1 { font-size: clamp(2.2rem, 5.4vw, 4rem); letter-spacing: -.04em; margin-bottom: 24px; }
.article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; color: var(--muted); font-size: .92rem; }
.article-cover { margin: clamp(32px, 5vw, 56px) 0 0; border-radius: var(--radius); overflow: hidden; aspect-ratio: 16 / 8; background: var(--soft); }
.article-cover img { width: 100%; height: 100%; object-fit: cover; }
.article-body { max-width: 720px; margin: clamp(40px, 6vw, 72px) auto 0; }
.share { max-width: 720px; margin: 56px auto 0; padding-top: 28px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.share strong { font-size: .9rem; margin-right: 6px; }
.share a, .share button { padding: 9px 18px; border-radius: 999px; border: 1px solid var(--line); background: #fff; font-size: .88rem; font-weight: 500; transition: border-color .2s, color .2s; }
.share a:hover, .share button:hover { border-color: var(--accent); color: var(--accent); }
.share .copied { color: var(--accent); font-size: .88rem; }
@media (max-width: 700px) { .article-cover { aspect-ratio: 4 / 3; } }

/* ---------- Değerler / kartlar ---------- */
.value-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.value-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 40px 36px; }
.value-card .num { display: block; color: var(--accent); font-weight: 700; letter-spacing: .1em; margin-bottom: 28px; }
.value-card h3 { margin-bottom: 10px; }
.value-card p { color: var(--muted); }
@media (max-width: 700px) { .value-grid { grid-template-columns: 1fr; } }
.eco-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.eco-card { display: flex; flex-direction: column; gap: 14px; padding: 24px; border: 1px solid var(--line); border-radius: 24px; background: #fff; transition: transform .3s var(--ease), border-color .3s; }
.eco-card:hover { transform: translateY(-4px); border-color: var(--accent); }
.eco-card small { color: var(--muted); display: block; }
.eco-card strong { display: block; font-size: 1.05rem; }
.eco-logo { display: flex; align-items: center; justify-content: flex-start; height: 72px; }
.eco-logo img { max-height: 64px; max-width: 100%; width: auto; height: auto; object-fit: contain; filter: grayscale(.15); opacity: .9; transition: opacity .3s, filter .3s; }
.eco-card:hover .eco-logo img { opacity: 1; filter: none; }
.eco-logo--text .eco-mark { width: 56px; height: 56px; border-radius: 16px; font-size: 1.05rem; }
.eco-card .eco-url { margin-top: 6px; font-size: .8rem; color: var(--accent); }
@media (max-width: 960px) { .eco-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .eco-grid { grid-template-columns: 1fr; } }

/* ---------- İletişim sayfası ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(32px, 6vw, 80px); align-items: start; }
.contact-cards { display: grid; gap: 14px; }
.contact-card { display: flex; gap: 18px; align-items: flex-start; padding: 24px 26px; border: 1px solid var(--line); border-radius: 24px; background: #fff; transition: border-color .25s, transform .25s var(--ease); }
a.contact-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.contact-card .eco-mark { background: var(--accent-soft); }
.eco-mark svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.contact-card small { display: block; color: var(--muted); font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; font-weight: 600; }
.contact-card strong { display: block; font-size: 1.12rem; margin-top: 2px; font-weight: 600; letter-spacing: -.01em; }
.form { background: var(--soft); border-radius: var(--radius); padding: clamp(28px, 4vw, 44px); display: grid; gap: 18px; }
.form label { display: grid; gap: 8px; font-size: .88rem; font-weight: 600; }
.form input, .form select, .form textarea { font: inherit; padding: 14px 18px; border-radius: 16px; border: 1px solid var(--line); background: #fff; color: var(--ink); width: 100%; }
.form textarea { min-height: 140px; resize: vertical; }
.form input:focus, .form select:focus, .form textarea:focus { outline: 0; border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form .note { color: var(--muted); font-size: .84rem; }
.map-frame { margin-top: 64px; border-radius: var(--radius); overflow: hidden; aspect-ratio: 16 / 7; background: var(--soft); border: 1px solid var(--line); }
.map-frame iframe { width: 100%; height: 100%; border: 0; display: block; }
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } .form .row { grid-template-columns: 1fr; } .map-frame { aspect-ratio: 4 / 3; } }

/* ---------- 404 ---------- */
.notfound { min-height: 60vh; display: grid; place-content: center; text-align: center; gap: 20px; padding-block: 80px; }
.notfound .big { font-size: clamp(6rem, 22vw, 14rem); font-weight: 700; letter-spacing: -.07em; line-height: .9; color: var(--accent); }
.notfound .lead { margin-inline: auto; }
.notfound .hero-actions { justify-content: center; }

/* ---------- Hareketi azalt ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}
@media print { .site-header, .progress, .hero-controls, .cta, .share { display: none !important; } }