/* =========================================================
   Vemantic by DeepDataWork — ürün sitesi
   Marka kaynağı: DDW + Vemantic Marka/Web Sistemi (Final Kanonik, Web V2.4)
   DDW ile aynı grid / spacing / bileşen disiplini; Vemantic karakteri:
   koyu ürün dünyası, yön, ritim ve formasyon geometrisi.
   ========================================================= */

:root {
  /* Ana renk mimarisi */
  --vemantic-green: #0B5C4B;
  --teal: #25B4AC;
  --mint: #78D6C6;
  --graphite: #273342;
  --ddw-deep-blue: #0A2540;

  /* Koyu ürün dünyası */
  --ink: #04211C;
  --night: #062B24;
  --night-2: #0A3A31;
  --on-dark: #FFFFFF;
  --on-dark-muted: rgba(255, 255, 255, .72);
  --on-dark-faint: rgba(255, 255, 255, .5);
  --line-dark: rgba(120, 214, 198, .16);

  /* Açık zemin */
  --bg: #F5F8F7;
  --surface: #FFFFFF;
  --tint: #ECF4F2;
  --line: #DCE6E3;
  --text: #0D1F1B;
  --text-muted: #53625E;
  --text-faint: #7F8D89;
  --accent-text: #0B7A6C;   /* açık zeminde teal yerine kontrastlı ton */

  /* Tipografi */
  --font-heading: "Sora", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Spacing ölçeği: 4 / 8 / 12 / 16 / 24 / 32 / 48 / 64 / 96 / 128 */
  --s1: 4px; --s2: 8px; --s3: 12px; --s4: 16px; --s5: 24px;
  --s6: 32px; --s7: 48px; --s8: 64px; --s9: 96px; --s10: 128px;

  --container: 1240px;
  --gutter: 20px;
  --radius: 10px;
  --radius-sm: 6px;
  --header-h: 76px;

  --ease: cubic-bezier(.22, .61, .36, 1);
  --dur: 700ms;
}

/* ---------- Temel ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
section[id] { scroll-margin-top: var(--header-h); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3, p, ol, ul, figure, fieldset { margin: 0; }
ol, ul { padding: 0; list-style: none; }
button, input, textarea { font: inherit; color: inherit; }

:focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; border-radius: 4px; }
.dark :focus-visible, .site-header :focus-visible, .site-footer :focus-visible { outline-color: var(--mint); }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: var(--s4); top: -100px; z-index: 100;
  background: var(--mint); color: var(--ink); padding: var(--s2) var(--s4);
  border-radius: var(--radius-sm); text-decoration: none; font-weight: 500;
}
.skip-link:focus { top: var(--s4); }

.container {
  width: 100%;
  max-width: calc(var(--container) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- Tipografi ---------- */
.display {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: clamp(42px, 6vw, 78px);
  line-height: 1.02;
  letter-spacing: -0.04em;
}
.h2 {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: clamp(30px, 3.5vw, 48px);
  line-height: 1.1;
  letter-spacing: -0.03em;
  text-wrap: balance;
}
.lead {
  font-size: clamp(17px, 1.45vw, 20px);
  line-height: 1.55;
  max-width: 32em;
}
.body-lg {
  font-size: 17px;
  line-height: 1.65;
  color: var(--text-muted);
  max-width: 38em;
}
.accent { color: var(--mint); }
/* Slogan: veri (beyaz) → bilgi (teal) → karar (mint) — renk ilerlemesi dönüşümü anlatır */
.accent-step { color: var(--teal); }
.display-slogan { font-size: clamp(40px, 5.4vw, 70px); }

.eyebrow, .section-index, .micro, .hero-note, .hero-chain {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: .22em;
}
.eyebrow { font-size: 12px; color: var(--mint); margin-bottom: var(--s5); }
.section-index { font-size: 12px; font-weight: 500; color: var(--accent-text); margin-bottom: var(--s4); }
.micro { font-size: 10.5px; line-height: 1.7; color: var(--text-faint); }
.micro-rule { display: flex; gap: var(--s4); align-items: flex-start; }
.micro-rule::before { content: ""; flex: 0 0 36px; height: 1px; margin-top: .85em; background: currentColor; }

/* Koyu bölümler */
.dark { background: var(--night); color: var(--on-dark); }
.dark .body-lg { color: var(--on-dark-muted); }
.dark .section-index { color: var(--mint); }
.tint { background: var(--tint); }

/* ---------- Butonlar ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--s2);
  min-height: 46px; padding: 0 var(--s5);
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-family: var(--font-body); font-size: 15px; font-weight: 500;
  text-decoration: none; cursor: pointer; white-space: nowrap;
  transition: background-color .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease), transform .25s var(--ease);
}
.btn span[aria-hidden] { transition: transform .25s var(--ease); }
.btn:hover span[aria-hidden] { transform: translateX(3px); }
.btn:active { transform: translateY(1px); }
.btn-mint { background: var(--mint); color: var(--ink); }
.btn-mint:hover { background: #95E2D5; }
.btn-ghost-light { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .32); }
.btn-ghost-light:hover { border-color: var(--mint); background: rgba(120, 214, 198, .06); }
.btn-green { background: var(--vemantic-green); color: #fff; }
.btn-green:hover { background: #0D6E5A; }
.btn-ghost { background: var(--surface); color: var(--text); border-color: #C6D3D0; }
.btn-ghost:hover { border-color: var(--vemantic-green); }
.btn-block { width: 100%; }
.btn-row { display: flex; flex-wrap: wrap; gap: var(--s3); }

/* =========================================================
   HEADER — koyu, hero ile bütün; kaydırınca opaklaşır
   ========================================================= */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(4, 33, 28, .72);
  backdrop-filter: saturate(1.3) blur(14px);
  -webkit-backdrop-filter: saturate(1.3) blur(14px);
  border-bottom: 1px solid transparent;
  color: #fff;
  transition: border-color .3s var(--ease), background-color .3s var(--ease);
}
.site-header.is-scrolled { background: rgba(4, 33, 28, .94); border-bottom-color: var(--line-dark); }
.header-inner { display: flex; align-items: center; gap: var(--s6); height: var(--header-h); }

.brand { display: inline-flex; align-items: center; gap: var(--s3); text-decoration: none; flex-shrink: 0; }
.brand-mark { width: 34px; height: auto; }
.brand-text { display: grid; line-height: 1; }
/* Yazı-logotipi öncelikli: ilk harf (V) tartışmasız okunur, stilize ligatür yok.
   Metin HTML'de büyük harfle yazılır; text-transform kullanılmaz — lang="tr" i'yi İ yapar (VEMANTİC). */
.brand-word {
  font-family: var(--font-heading); font-weight: 600; font-size: 17px;
  letter-spacing: .2em; color: #fff;
}
.brand-endorse { font-size: 10.5px; letter-spacing: .04em; color: var(--on-dark-faint); margin-top: 5px; }

.main-nav { display: flex; align-items: center; flex: 1; gap: var(--s6); }
.main-nav ul { display: flex; gap: clamp(18px, 2.6vw, 40px); margin-inline: auto; }
.main-nav ul a {
  position: relative; text-decoration: none; font-size: 14.5px; font-weight: 500; color: rgba(255, 255, 255, .78);
  padding-block: var(--s2); transition: color .25s var(--ease);
}
.main-nav ul a:hover, .main-nav ul a.is-active { color: #fff; }
.main-nav ul a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 2px; height: 1px;
  background: var(--mint); transform: scaleX(0); transform-origin: left;
  transition: transform .3s var(--ease);
}
.main-nav ul a:hover::after, .main-nav ul a.is-active::after { transform: scaleX(1); }
.nav-cta { min-height: 40px; font-size: 14px; }

/* Dil seçici (DDW sitesiyle aynı yapı: TR kök, EN /en/) */
.lang-switch { display: flex; align-items: center; gap: 2px; flex-shrink: 0; font-size: 12.5px; font-weight: 600; letter-spacing: .06em; }
.lang-switch a, .lang-switch span { padding: 6px 7px; border-radius: 6px; line-height: 1; }
.lang-switch a { color: var(--on-dark-faint); text-decoration: none; transition: color .2s var(--ease); }
.lang-switch a:hover { color: var(--mint); }
.lang-switch [aria-current] { color: #fff; }

.nav-toggle {
  display: none; margin-left: auto; width: 44px; height: 44px; border: 0; background: transparent;
  cursor: pointer; position: relative;
}
.nav-toggle-bar {
  position: absolute; left: 11px; right: 11px; height: 1.5px; background: #fff;
  transition: transform .3s var(--ease), top .3s var(--ease);
}
.nav-toggle-bar:nth-of-type(2) { top: 18px; }
.nav-toggle-bar:nth-of-type(3) { top: 25px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-of-type(2) { top: 21.5px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-of-type(3) { top: 21.5px; transform: rotate(-45deg); }

/* =========================================================
   HERO — merkeze doğru hizalanan akış çizgileri
   ========================================================= */
.hero {
  position: relative;
  margin-top: calc(var(--header-h) * -1);
  padding-top: var(--header-h);
  min-height: 100vh;
  min-height: 100svh;
  display: flex; align-items: center;
  overflow: hidden; isolation: isolate;
  background:
    radial-gradient(ellipse 60% 70% at 72% 58%, rgba(37, 180, 172, .2), transparent 70%),
    radial-gradient(ellipse 80% 60% at 0% 100%, rgba(11, 92, 75, .45), transparent 70%),
    linear-gradient(180deg, var(--ink) 0%, var(--night) 100%);
}
.hero-visual {
  position: absolute; inset: 0 0 0 38%; z-index: -1;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 18%);
          mask-image: linear-gradient(90deg, transparent 0%, #000 18%);
}
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.no-js .hero-visual { background: url("../img/hero-formation.svg") 60% 55% / min(70%, 640px) no-repeat; }

.hero-note {
  position: absolute; right: clamp(20px, 4vw, 64px); top: calc(var(--header-h) + 5%);
  font-size: 10px; line-height: 1.9; color: var(--on-dark-faint);
  border-left: 1px solid var(--line-dark); padding-left: var(--s4);
}

.hero-inner { padding-block: var(--s9); }
.hero-copy { max-width: 620px; }
.hero-copy .display { margin-bottom: var(--s5); }
.hero-copy .lead { color: var(--on-dark-muted); margin-bottom: var(--s6); }
.hero-copy .btn-row { margin-bottom: var(--s7); }

.hero-chain { display: flex; flex-wrap: wrap; gap: var(--s2) 0; font-size: 10.5px; color: var(--on-dark-faint); }
.hero-chain span + span::before { content: "·"; margin: 0 10px; color: var(--mint); }

/* =========================================================
   BÖLÜMLER
   ========================================================= */
.section { padding-block: clamp(72px, 9vw, var(--s10)); }

.section-head {
  display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: var(--s7);
  align-items: end; margin-bottom: var(--s8);
}
.head-aside { padding-bottom: 6px; }

/* ---------- 01 Yolculuk ---------- */
.journey { background: var(--surface); }
.journey-rail {
  position: relative;
  display: grid; grid-template-columns: repeat(6, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}
.journey-step { position: relative; padding: var(--s6) var(--s5) var(--s2) 0; }
.journey-step::before {
  content: ""; position: absolute; top: -5px; left: 0; width: 9px; height: 9px; border-radius: 50%;
  background: var(--surface); border: 1.5px solid var(--vemantic-green);
}
.journey-step:nth-child(n+3)::before { background: var(--vemantic-green); }
.journey-step-end::before { width: 13px; height: 13px; top: -7px; background: var(--mint); border-color: var(--vemantic-green); box-shadow: 0 0 0 5px rgba(120, 214, 198, .25); }
.journey-num { display: block; font-family: var(--font-mono); font-size: 11px; color: var(--text-faint); margin-bottom: var(--s5); }
.journey-step h3 { font-family: var(--font-heading); font-size: 19px; font-weight: 600; letter-spacing: -.015em; line-height: 1.25; margin-bottom: var(--s2); }
.journey-step p { font-size: 14.5px; line-height: 1.55; color: var(--text-muted); }
/* Hizalanma çizgisi: bölüm görününce soldan sağa dolar */
.journey-rail::after {
  content: ""; position: absolute; top: -1px; left: 0; height: 1px; width: 100%;
  background: linear-gradient(90deg, var(--vemantic-green), var(--teal));
  transform: scaleX(0); transform-origin: left; transition: transform 1.6s var(--ease) .2s;
}
.journey-rail:has(.is-visible)::after { transform: scaleX(1); }
.no-js .journey-rail::after { transform: scaleX(1); }

/* ---------- 02 Formasyonun zekâsı ---------- */
.formation {
  background:
    radial-gradient(ellipse 50% 60% at 75% 40%, rgba(37, 180, 172, .12), transparent 70%),
    var(--night);
}
.formation-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: var(--s8); align-items: center; margin-bottom: var(--s8); }
.formation-copy .h2 { margin-bottom: var(--s5); }
.formation-visual {
  border: 1px solid var(--line-dark); border-radius: 14px; overflow: hidden;
  background: linear-gradient(180deg, rgba(255, 255, 255, .02), rgba(255, 255, 255, 0));
}
.formation-svg { width: 100%; height: auto; }

/* Dağınıklık → hizalanma: noktalar görünür olunca formasyona oturur */
.f-dots circle {
  transform-box: fill-box; transform-origin: center;
  transform: translate(var(--dx), var(--dy)); opacity: .35;
  transition: transform 1.5s var(--ease) var(--d), opacity 1.2s var(--ease) var(--d);
}
.f-arm { stroke-dasharray: 520; stroke-dashoffset: 520; transition: stroke-dashoffset 1.6s var(--ease) .5s; }
.formation-visual.is-visible .f-dots circle { transform: none; opacity: 1; }
.formation-visual.is-visible .f-arm { stroke-dashoffset: 0; }
.f-lead { filter: drop-shadow(0 0 8px rgba(120, 214, 198, .8)); }
.f-ring { transform-box: fill-box; transform-origin: center; animation: ring 3.2s var(--ease) infinite; }
@keyframes ring { 0% { transform: scale(.6); opacity: .9; } 100% { transform: scale(2.2); opacity: 0; } }
.no-js .f-dots circle { transform: none; opacity: 1; }
.no-js .f-arm { stroke-dashoffset: 0; }

.principles { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: var(--s3); }
.principle {
  border: 1px solid var(--line-dark); border-radius: var(--radius); padding: var(--s5);
  background: rgba(255, 255, 255, .025);
  transition: border-color .3s var(--ease), background-color .3s var(--ease);
}
.principle:hover { border-color: rgba(120, 214, 198, .4); background: rgba(120, 214, 198, .04); }
.principle h3 {
  font-family: var(--font-mono); font-size: 11.5px; font-weight: 500; letter-spacing: .18em; text-transform: uppercase;
  color: var(--mint); margin-bottom: var(--s3);
}
.principle p { font-size: 15px; line-height: 1.5; color: rgba(255, 255, 255, .86); }

/* ---------- 03 Çalışma mantığı ---------- */
.logic-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: var(--s8); align-items: start; }
.logic-copy { position: sticky; top: calc(var(--header-h) + var(--s7)); }
.logic-copy .h2 { margin-bottom: var(--s5); }
.rail { position: relative; display: grid; gap: var(--s3); counter-reset: rail; }
.rail::before {
  content: ""; position: absolute; left: 21px; top: 30px; bottom: 30px; width: 1px;
  background: linear-gradient(var(--vemantic-green), var(--teal));
}
.rail-step {
  position: relative; counter-increment: rail;
  padding: var(--s5) var(--s5) var(--s5) 72px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
}
.rail-step::before {
  content: counter(rail, decimal-leading-zero);
  position: absolute; left: 6px; top: var(--s5);
  width: 31px; height: 31px; border-radius: 50%;
  display: grid; place-items: center;
  font-family: var(--font-mono); font-size: 11px; color: var(--vemantic-green);
  background: var(--tint); border: 1px solid #BFD6D1;
}
.rail-step:last-child::before { background: var(--vemantic-green); color: #fff; border-color: var(--vemantic-green); }
.rail-step h3 { font-family: var(--font-heading); font-size: 19px; font-weight: 600; letter-spacing: -.015em; margin-bottom: var(--s1); }
.rail-step p { font-size: 15px; line-height: 1.6; color: var(--text-muted); }

/* ---------- 04 Ürün deneyimi ---------- */
.experience { background: linear-gradient(180deg, var(--night) 0%, var(--ink) 100%); }
.experience-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: var(--s8); align-items: center; margin-bottom: var(--s8); }
.experience-copy .h2 { margin-bottom: var(--s5); }

/* Ekran slotu: vemantic.com ekran görüntüsü gelene kadar yapı iskeleti gösterir.
   .shot-screen içine <img> eklenince yer tutucu ve etiket kendiliğinden gizlenir. */
.shot {
  border: 1px solid var(--line-dark); border-radius: 14px; overflow: hidden;
  background: linear-gradient(160deg, #0B3F35 0%, #072E27 60%, #062821 100%);
  box-shadow: 0 40px 80px -40px rgba(0, 0, 0, .6);
}
.shot-bar { display: flex; align-items: center; gap: 6px; padding: 11px 14px; border-bottom: 1px solid var(--line-dark); }
.shot-bar span { width: 8px; height: 8px; border-radius: 50%; background: rgba(120, 214, 198, .3); }
.shot-bar p {
  margin-left: auto; margin-right: auto; padding: 3px 14px; border-radius: 999px;
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .06em; color: var(--on-dark-faint);
  background: rgba(255, 255, 255, .05);
}
.shot-screen { position: relative; aspect-ratio: 16 / 10; overflow: hidden; }
.shot-screen > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: top left; }
.shot-screen:has(> img) .shot-placeholder, .shot-screen:has(> img) .shot-label { display: none; }
.shot-label {
  position: absolute; right: 14px; bottom: 12px;
  font-family: var(--font-mono); font-size: 10px; letter-spacing: .18em; text-transform: uppercase;
  color: var(--mint); background: rgba(4, 33, 28, .8); border: 1px solid var(--line-dark);
  padding: 5px 10px; border-radius: 999px;
}

.ui-body { position: absolute; inset: 0; display: grid; grid-template-columns: 26% 1fr; }
.ui-side { display: grid; align-content: start; gap: 14px; padding: 18px 16px; border-right: 1px solid var(--line-dark); }
.ui-side i, .ui-row i, .ui-card i, .shot-skeleton i {
  display: block; height: 7px; width: var(--w, 60%); border-radius: 4px; background: rgba(255, 255, 255, .12);
}
.ui-side .ui-logo { width: 22px; height: auto; opacity: .9; margin-bottom: 8px; }
.ui-side i.is-on { background: rgba(120, 214, 198, .55); }
.ui-main { padding: 18px; display: grid; gap: 16px; grid-template-rows: auto auto 1fr; }
.ui-row { display: flex; justify-content: space-between; align-items: center; }
.ui-row i { height: 9px; }
.ui-pill { width: 64px !important; height: 22px !important; border-radius: 999px !important; background: rgba(120, 214, 198, .18) !important; }
.ui-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.ui-card { border: 1px solid var(--line-dark); border-radius: 8px; padding: 12px; display: grid; gap: 10px; }
.ui-card b { display: block; height: 16px; width: 46%; border-radius: 4px; background: rgba(120, 214, 198, .3); }
.ui-chart { position: relative; border: 1px solid var(--line-dark); border-radius: 8px; min-height: 0; }
.ui-chart svg { position: absolute; inset: 14px 18px; width: calc(100% - 36px); height: calc(100% - 28px); overflow: visible; }
.ui-line { stroke: var(--mint); stroke-width: 2; vector-effect: non-scaling-stroke; stroke-dasharray: 700; stroke-dashoffset: 700; transition: stroke-dashoffset 2s var(--ease) .4s; }
.ui-line-soft { stroke: rgba(120, 214, 198, .3); stroke-width: 1.5; vector-effect: non-scaling-stroke; }
.shot.is-visible .ui-line { stroke-dashoffset: 0; }
.no-js .ui-line { stroke-dashoffset: 0; }

.shot-skeleton { position: absolute; inset: 0; display: grid; align-content: start; gap: 14px; padding: 22px; }
.shot-skeleton b { display: block; height: 64px; border-radius: 8px; border: 1px solid var(--line-dark); background: rgba(120, 214, 198, .07); }

/* Ürün turu (açık zeminde koyu ekran kartları) */
.tour { margin-top: var(--s9); }
.tour-title { font-family: var(--font-mono); font-size: 11px; letter-spacing: .22em; text-transform: uppercase; color: var(--accent-text); margin-bottom: var(--s5); }
.tour-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--s4); }
.shot-sm { box-shadow: 0 24px 48px -32px rgba(4, 33, 28, .55); }
.shot-sm figcaption {
  display: flex; align-items: baseline; gap: var(--s3); flex-wrap: wrap;
  padding: 14px 16px; border-top: 1px solid var(--line-dark); font-size: 14px; color: var(--on-dark-muted);
}
.shot-sm figcaption span { font-family: var(--font-heading); font-weight: 600; color: #fff; display: inline-flex; align-items: center; gap: 8px; }
.shot-sm figcaption span::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }

.layers { border-top: 1px solid var(--line-dark); padding-top: var(--s6); }
.layers-title { font-family: var(--font-mono); font-size: 11px; letter-spacing: .2em; text-transform: uppercase; color: var(--on-dark-faint); margin-bottom: var(--s6); }
.layer-list { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: var(--s2); }
.layer-list li {
  position: relative; padding: var(--s4); border-radius: var(--radius);
  background: rgba(255, 255, 255, .03); border: 1px solid var(--line-dark);
}
/* Kullanıcıdan çekirdeğe iner, sonuç yeniden yüzeye çıkar: katmanlar ortada derinleşir */
.layer-list li:nth-child(2), .layer-list li:nth-child(5) { background: rgba(120, 214, 198, .05); }
.layer-list li:nth-child(3), .layer-list li:nth-child(4) { background: rgba(120, 214, 198, .09); }
.layer-list li:last-child { border-color: rgba(120, 214, 198, .5); }
.layer-list span { display: block; font-family: var(--font-mono); font-size: 10.5px; color: var(--mint); margin-bottom: var(--s3); }
.layer-list h3 { font-family: var(--font-heading); font-size: 16px; font-weight: 600; letter-spacing: -.01em; margin-bottom: 2px; }
.layer-list p { font-size: 13.5px; line-height: 1.45; color: var(--on-dark-muted); }

/* ---------- 05 Modüller ---------- */
.modules { background: var(--surface); }
.module-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--s4); margin-bottom: var(--s7); }
.module {
  position: relative; overflow: hidden;
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface);
  padding: var(--s6) var(--s5) var(--s5);
  transition: border-color .3s var(--ease), transform .3s var(--ease), box-shadow .3s var(--ease);
}
/* Modül vurgu rengi yalnız ayrıştırıcı katman: üst çizgi + ikon zemini (alanın ~%10-15'i) */
.module::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 3px; background: var(--accent); }
.module:hover { transform: translateY(-2px); border-color: #C5D6D2; box-shadow: 0 16px 36px -24px rgba(4, 33, 28, .45); }
.module-icon {
  width: 44px; height: 44px; padding: 10px; border-radius: 10px; margin-bottom: var(--s7);
  background: color-mix(in srgb, var(--accent) 16%, #fff);
  color: var(--vemantic-green); fill: currentColor;
}
.module h3 { font-family: var(--font-heading); font-size: 21px; font-weight: 600; letter-spacing: -.02em; margin-bottom: var(--s1); }
.module-fn { font-size: 15px; color: var(--text-muted); margin-bottom: var(--s5); }
.module-tag { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .16em; text-transform: uppercase; color: var(--text-faint); }

/* ---------- 06 Sektörler — koyu yeşil zemin ---------- */
.industries {
  position: relative; isolation: isolate;
  background:
    radial-gradient(ellipse 60% 80% at 85% 20%, rgba(37, 180, 172, .22), transparent 70%),
    linear-gradient(135deg, #073A31 0%, var(--ink) 70%);
}
.industry-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--s3); margin-bottom: var(--s5); }
.industry {
  position: relative; background: rgba(255, 255, 255, .04); border: 1px solid var(--line-dark); border-radius: var(--radius);
  padding: var(--s5) var(--s5) var(--s5) calc(var(--s5) + 4px);
  transition: border-color .3s var(--ease), background-color .3s var(--ease);
}
.industry:hover { border-color: rgba(120, 214, 198, .4); background: rgba(120, 214, 198, .05); }
.industry::before { content: ""; position: absolute; left: 0; top: 14px; bottom: 14px; width: 3px; border-radius: 0 3px 3px 0; background: var(--mint); }
.industry h3 { font-family: var(--font-heading); font-size: 19px; font-weight: 600; letter-spacing: -.015em; margin-bottom: var(--s1); }
.industry p { font-size: 14.5px; color: var(--on-dark-muted); }
.industry-more { font-family: var(--font-heading); font-weight: 500; font-size: 15px; color: var(--mint); padding-left: 4px; margin-bottom: var(--s8); }

.adapter {
  display: grid; grid-template-columns: auto 1fr; gap: var(--s4) var(--s7); align-items: center;
  background: rgba(4, 33, 28, .55); border: 1px solid var(--line-dark); color: #fff; border-radius: 14px; padding: var(--s6) clamp(24px, 4vw, 48px);
}
.adapter-title { font-family: var(--font-mono); font-size: 11px; letter-spacing: .22em; text-transform: uppercase; color: var(--mint); }
.adapter-list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--s5); }
.adapter-list li { border-left: 1px solid var(--line-dark); padding-left: var(--s4); }
.adapter-list h3 { font-family: var(--font-heading); font-size: 17px; font-weight: 600; margin-bottom: 2px; }
.adapter-list p { font-size: 14px; color: var(--on-dark-muted); }
.adapter-note { grid-column: 2; font-size: 14px; color: var(--on-dark-faint); }

/* ---------- 07 Sonuç ---------- */
.outcome { background: var(--surface); }
.outcome .section-head { grid-template-columns: 1fr; }
.outcome-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--s4); }
.outcome-card {
  background: var(--tint); border-radius: var(--radius); padding: var(--s7) var(--s6) var(--s6);
  border: 1px solid transparent; transition: border-color .3s var(--ease);
}
.outcome-card:hover { border-color: #BFD6D1; }
.outcome-icon { width: 48px; height: 48px; margin-bottom: var(--s7); fill: none; stroke: var(--vemantic-green); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.outcome-card h3 { font-family: var(--font-heading); font-size: 22px; font-weight: 600; letter-spacing: -.02em; margin-bottom: var(--s2); }
.outcome-card p { font-size: 15.5px; line-height: 1.6; color: var(--text-muted); }

/* ---------- 08 VemanticLAB ---------- */
.lab { background: var(--ink); }
.lab-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: var(--s8); align-items: center; }
.lab-copy .h2 { margin-bottom: var(--s5); }
.lab-steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; border: 1px solid var(--line-dark); border-radius: 14px; overflow: hidden; }
.lab-steps li { padding: var(--s6) var(--s5); border-right: 1px solid var(--line-dark); }
.lab-steps li:last-child { border-right: 0; background: rgba(120, 214, 198, .07); }
.lab-steps span { display: block; font-family: var(--font-mono); font-size: 11px; color: var(--mint); margin-bottom: var(--s7); }
.lab-steps h3 { font-family: var(--font-heading); font-size: 18px; font-weight: 600; margin-bottom: var(--s1); }
.lab-steps p { font-size: 14px; line-height: 1.5; color: var(--on-dark-muted); }

/* =========================================================
   CTA + FORM
   ========================================================= */
.cta {
  position: relative; overflow: hidden; isolation: isolate;
  padding-block: clamp(80px, 10vw, var(--s10));
  background: var(--tint);
}
.cta-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--s8); align-items: start; }
.cta-copy { position: sticky; top: calc(var(--header-h) + var(--s7)); }
.cta-copy .h2 { margin-bottom: var(--s5); }
.cta-title { max-width: 12em; }
.apply-steps { display: grid; gap: var(--s3); margin-top: var(--s6); }
.apply-steps li { display: flex; align-items: baseline; gap: var(--s4); font-size: 15px; color: var(--text); }
.apply-steps span { font-family: var(--font-mono); font-size: 11px; color: var(--accent-text); }

.contact-form {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px; padding: clamp(24px, 3vw, 40px);
  box-shadow: 0 30px 60px -40px rgba(4, 33, 28, .35);
  display: grid; gap: var(--s4);
}
.form-group {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: .2em; text-transform: uppercase; color: var(--accent-text);
  padding-bottom: var(--s2); border-bottom: 1px solid var(--line);
}
.form-group:not(:first-child) { margin-top: var(--s3); }
.optional { color: var(--text-faint); }

.field { display: grid; gap: 6px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s4); }
.field label { font-size: 13px; color: var(--text-muted); }
.field input, .field textarea, .field select {
  width: 100%; min-height: 46px; padding: 11px 14px;
  background: var(--bg); color: var(--text);
  border: 1px solid #C6D3D0; border-radius: var(--radius-sm);
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}
.field textarea { resize: vertical; min-height: 90px; }
.field select {
  appearance: none; cursor: pointer; padding-right: 36px;
  background-image: linear-gradient(45deg, transparent 50%, var(--vemantic-green) 50%), linear-gradient(135deg, var(--vemantic-green) 50%, transparent 50%);
  background-position: right 18px top 50%, right 13px top 50%; background-size: 5px 5px; background-repeat: no-repeat;
}
.field select option { color: var(--text); }
.field-check label { display: flex; align-items: flex-start; gap: var(--s3); cursor: pointer; font-size: 13px; line-height: 1.5; color: var(--text-muted); }
.field-check input { flex: 0 0 18px; width: 18px; min-height: 18px; height: 18px; padding: 0; margin-top: 1px; accent-color: var(--vemantic-green); }
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--vemantic-green); background: var(--surface); box-shadow: 0 0 0 3px rgba(11, 92, 75, .12); }
.field-error { display: none; font-size: 12.5px; color: #B42318; }
.field.has-error input, .field.has-error textarea, .field.has-error select { border-color: #D92D20; }
.field-check.has-error label { color: #B42318; }
.field.has-error .field-error { display: block; }
.form-status { font-size: 14px; color: var(--accent-text); min-height: 1.4em; }
.form-status.is-error { color: #B42318; }
.hp-field { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.contact-form.is-sending .btn-block { opacity: .7; pointer-events: none; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer { background: var(--ink); color: #fff; border-top: 1px solid var(--line-dark); padding-top: var(--s8); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: var(--s7); padding-bottom: var(--s7); }
.footer-lockup { display: flex; align-items: center; gap: var(--s3); margin-bottom: var(--s4); }
.footer-lockup img { width: 40px; height: auto; }
.footer-lockup .brand-endorse { margin-top: 6px; }
.footer-slogan { font-family: var(--font-heading); font-weight: 500; font-size: 17px; letter-spacing: -.01em; color: #fff; max-width: 22em; margin-bottom: var(--s6); }
.footer-ddw { display: inline-block; opacity: .85; transition: opacity .25s var(--ease); }
.footer-ddw:hover { opacity: 1; }
.footer-ddw img { width: 132px; height: auto; }
.footer-title { font-family: var(--font-mono); font-size: 11px; letter-spacing: .2em; text-transform: uppercase; color: var(--on-dark-faint); margin-bottom: var(--s4); }
.footer-nav ul { display: grid; gap: var(--s2); }
.footer-nav a { text-decoration: none; color: rgba(255, 255, 255, .8); font-size: 15px; }
.footer-nav a:hover { color: var(--mint); }
.footer-bottom {
  display: flex; justify-content: space-between; gap: var(--s4); flex-wrap: wrap;
  border-top: 1px solid var(--line-dark); padding-block: var(--s5); font-size: 13px; color: var(--on-dark-faint);
}
.footer-bottom a { text-decoration: none; }
.footer-bottom a:hover { color: #fff; }

/* =========================================================
   HAREKET — dağınıklık → hizalanma → formasyon → ileri hareket
   ========================================================= */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0ms !important; animation-duration: 0ms !important; transition-delay: 0ms !important; }
  .reveal { opacity: 1; transform: none; }
  .f-ring { display: none; }
}

/* =========================================================
   RESPONSIVE — 1440 / 1024 / 768 / 390
   ========================================================= */
@media (max-width: 1180px) {
  .journey-rail { grid-template-columns: repeat(3, minmax(0, 1fr)); row-gap: var(--s6); border-top: 0; }
  .journey-step { border-top: 1px solid var(--line); }
  .journey-rail::after { display: none; }
  .principles { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .module-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .layer-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 1024px) {
  .section-head { grid-template-columns: 1fr; gap: var(--s5); margin-bottom: var(--s7); }
  .formation-grid, .experience-grid, .lab-grid, .logic-grid { grid-template-columns: 1fr; gap: var(--s7); }
  .logic-copy { position: static; }
  .formation-visual { max-width: 640px; }
  .industry-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .adapter { grid-template-columns: 1fr; }
  .adapter-note { grid-column: 1; }
  .hero-visual { inset: 0 0 0 26%; }
}

@media (max-width: 860px) {
  :root { --header-h: 64px; }
  .nav-toggle { display: block; }
  .main-nav {
    position: fixed; inset: var(--header-h) 0 auto 0;
    flex-direction: column; align-items: stretch; gap: var(--s5);
    background: var(--ink); border-bottom: 1px solid var(--line-dark);
    padding: var(--s5) var(--gutter) var(--s6);
    transform: translateY(-8px); opacity: 0; visibility: hidden;
    transition: opacity .25s var(--ease), transform .25s var(--ease), visibility 0s linear .25s;
  }
  .main-nav.is-open { transform: none; opacity: 1; visibility: visible; transition-delay: 0s; }
  .main-nav ul { flex-direction: column; gap: 0; margin: 0; }
  .main-nav ul a { display: block; padding: var(--s3) 0; font-size: 17px; border-bottom: 1px solid var(--line-dark); }
  .main-nav ul a::after { display: none; }
  .nav-cta { align-self: flex-start; }
  .lang-switch { margin-left: auto; }
  .lang-switch ~ .nav-toggle { margin-left: 0; }

  .cta-grid { grid-template-columns: 1fr; gap: var(--s7); }
  .cta-copy { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .hero-note { display: none; }
  .br-wide { display: none; }

  /* Hero tek kolon: formasyon görseli metnin altına iner, zorla kırpılmaz */
  .hero { flex-direction: column; align-items: stretch; justify-content: flex-start; }
  .hero-inner { padding-block: var(--s8) 0; }
  .hero-visual {
    position: relative; inset: auto; order: 2; flex: 1 0 auto; min-height: clamp(260px, 62vw, 460px);
    -webkit-mask-image: none; mask-image: none;
  }
  .hero-copy .btn-row { margin-bottom: var(--s6); }

  .lab-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lab-steps li:nth-child(2) { border-right: 0; }
  .lab-steps li:nth-child(-n+2) { border-bottom: 1px solid var(--line-dark); }
  .adapter-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tour-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 560px) {
  .brand-mark { width: 30px; }
  .brand-word { font-size: 15px; }
  .btn-row { flex-direction: column; align-items: stretch; }
  .btn-row .btn { width: 100%; }
  .journey-rail, .principles, .module-grid, .industry-grid, .outcome-grid, .layer-list { grid-template-columns: 1fr; }
  .journey-step { padding-right: 0; }
  .journey-num { margin-bottom: var(--s3); }
  .module-icon { margin-bottom: var(--s5); }
  .outcome-icon { margin-bottom: var(--s5); }
  .rail-step { padding-left: 60px; }
  .rail::before { left: 21px; }
  .lab-steps { grid-template-columns: 1fr; }
  .lab-steps li { border-right: 0; border-bottom: 1px solid var(--line-dark); }
  .lab-steps li:last-child { border-bottom: 0; }
  .lab-steps span { margin-bottom: var(--s3); }
  .adapter-list { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .ui-cards { grid-template-columns: repeat(2, 1fr); }
  .ui-cards .ui-card:nth-child(3) { display: none; }
  .ui-body { grid-template-columns: 1fr; }
  .ui-side { display: none; }
  .tour-grid { grid-template-columns: 1fr; }
}