/* =========================================================
   LIXI DEVELOPMENT — siyah titanyum / metalik gümüş
   Hareket ölçüleri Lixi Wallet tasarım sisteminden (MASTER §7)
   ========================================================= */

:root {
  color-scheme: dark;

  --bg: #050506;
  --bg-2: #09090b;
  --panel: #0d0e10;
  --panel-2: #131417;
  --line: rgba(255, 255, 255, .075);
  --line-2: rgba(255, 255, 255, .14);
  --line-3: rgba(255, 255, 255, .24);

  --fg: #f2f3f5;
  --fg-2: #a9adb4;
  --fg-3: #767b84;

  /* tek vurgu: Lixi Wallet koyu tema birincil rengi, yalnızca odak ve küçük işaretlerde */
  --accent: #8ab4ff;

  --silver: linear-gradient(180deg, #ffffff 0%, #e3e5e9 28%, #a2a7ae 58%, #d6d9dd 80%, #8f949b 100%);
  --silver-flat: linear-gradient(90deg, #8f949b, #f4f5f7 45%, #b9bdc3 70%, #7f848b);
  --brushed: repeating-linear-gradient(90deg, rgba(255,255,255,.022) 0 1px, transparent 1px 3px, rgba(255,255,255,.012) 3px 4px, transparent 4px 7px);

  --f-sans: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --f-mono: "Geist Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;

  --gutter: clamp(16px, 4vw, 48px);
  --max: 1320px;
  --header-h: 68px;

  /* hareket */
  --t-fast: 120ms;
  --t-std: 220ms;
  --t-enter: 300ms;
  --t-progress: 600ms;
  --ease-emph: cubic-bezier(.05, .7, .1, 1);
  --ease-std: cubic-bezier(.2, 0, 0, 1);
  --ease-in: cubic-bezier(.3, 0, .8, .15);
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + 16px);
}
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 400 17px/1.6 var(--f-sans);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
h1, h2, h3, h4, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { list-style: none; padding: 0; }
svg { display: block; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

::selection { background: rgba(255, 255, 255, .85); color: #050506; }

.sr-only {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip {
  position: fixed; left: 16px; top: 12px; z-index: 100;
  padding: 10px 16px; border-radius: 10px;
  background: var(--fg); color: var(--bg); font-weight: 600;
  transform: translateY(-160%);
  transition: transform var(--t-std) var(--ease-std);
}
.skip:focus { transform: none; }

.wrap {
  width: min(100% - 2 * var(--gutter), var(--max));
  margin-inline: auto;
}

/* ---------- ortak tipografi ---------- */

.metal-text {
  background: var(--silver);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font: 500 12px/1.2 var(--f-mono);
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--fg-2);
}
.eyebrow__dash {
  width: 28px; height: 1px;
  background: var(--silver-flat);
}

/* ---------- butonlar ---------- */

.actions { display: flex; flex-wrap: wrap; gap: 12px; }

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font: 600 15px/1 var(--f-sans);
  letter-spacing: -.005em;
  overflow: hidden;
  isolation: isolate;
  transition: transform var(--t-fast) var(--ease-std), border-color var(--t-std) var(--ease-std), background-color var(--t-std) var(--ease-std);
}
.btn:active { transform: scale(.98); }

.btn__arrow {
  width: 16px; height: 16px;
  fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round;
  transition: transform var(--t-std) var(--ease-emph);
}
.btn:hover .btn__arrow { transform: translateX(2px); }

.btn--metal {
  color: #08090a;
  background: linear-gradient(180deg, #fbfbfc 0%, #d5d8dc 46%, #a9adb3 100%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .9), inset 0 -1px 0 rgba(0, 0, 0, .25), 0 10px 30px -12px rgba(255, 255, 255, .35);
}
/* metalik ışık geçişi */
.btn--metal::after {
  content: "";
  position: absolute; inset: -20% auto -20% 0;
  width: 60%;
  z-index: -1;
  background: linear-gradient(100deg, transparent 0%, rgba(255, 255, 255, .95) 50%, transparent 100%);
  transform: translateX(-140%) skewX(-18deg);
  transition: transform 700ms var(--ease-emph);
}
.btn--metal:hover::after, .btn--metal:focus-visible::after { transform: translateX(260%) skewX(-18deg); }

.btn--ghost {
  color: var(--fg);
  border: 1px solid var(--line-2);
  background: rgba(255, 255, 255, .015);
}
.btn--ghost:hover { border-color: var(--line-3); background: rgba(255, 255, 255, .045); }

.icon-btn {
  display: grid; place-items: center;
  width: 48px; height: 48px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  background: rgba(8, 9, 10, .7);
  transition: border-color var(--t-std) var(--ease-std), background-color var(--t-std) var(--ease-std), transform var(--t-fast) var(--ease-std);
}
.icon-btn svg { width: 18px; height: 18px; fill: none; stroke: var(--fg); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.icon-btn:hover { border-color: var(--line-3); background: rgba(255, 255, 255, .06); }
.icon-btn:active { transform: scale(.96); }

/* ---------- header ---------- */

.header {
  position: fixed; inset: 0 0 auto;
  z-index: 50;
  height: var(--header-h);
  border-bottom: 1px solid transparent;
  transition: background-color var(--t-enter) var(--ease-std), border-color var(--t-enter) var(--ease-std);
}
.header.is-scrolled {
  background: rgba(5, 5, 6, .97);
  border-bottom-color: var(--line);
}
.header__inner {
  height: 100%;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}

.brand { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; }
.brand__mark { width: 28px; height: 28px; }
.brand__word { font: 700 18px/1 var(--f-sans); letter-spacing: .12em; }
.brand__sub {
  font: 500 11px/1 var(--f-mono); letter-spacing: .2em; text-transform: uppercase; color: var(--fg-3);
  padding-left: 10px; border-left: 1px solid var(--line-2);
}

.nav { position: relative; }
.nav__list { display: flex; gap: 4px; }
.nav__list a {
  display: inline-flex; align-items: center;
  min-height: 44px; padding: 0 14px;
  font-size: 14px; font-weight: 500; color: var(--fg-2);
  transition: color var(--t-std) var(--ease-std);
}
.nav__list a:hover, .nav__list a[aria-current="true"] { color: var(--fg); }
.nav__indicator {
  position: absolute; left: 0; bottom: 6px;
  width: 100px; height: 1px;
  background: var(--silver-flat);
  transform-origin: left center;
  transform: translateX(0) scaleX(0);
  opacity: 0;
  transition: transform var(--t-enter) var(--ease-emph), opacity var(--t-std) var(--ease-std);
}

.menu-btn {
  display: none;
  align-items: center; gap: 10px;
  min-height: 44px; padding: 0 4px 0 14px;
  font: 500 12px/1 var(--f-mono); letter-spacing: .18em; text-transform: uppercase;
}
.menu-btn__icon { position: relative; width: 22px; height: 12px; }
.menu-btn__icon i {
  position: absolute; left: 0; right: 0; height: 1.5px; background: var(--fg);
  transition: transform var(--t-std) var(--ease-std);
}
.menu-btn__icon i:first-child { top: 2px; }
.menu-btn__icon i:last-child { bottom: 2px; }
.menu-btn[aria-expanded="true"] .menu-btn__icon i:first-child { transform: translateY(3.25px) rotate(45deg); }
.menu-btn[aria-expanded="true"] .menu-btn__icon i:last-child { transform: translateY(-3.25px) rotate(-45deg); }

@media (max-width: 860px) {
  .brand__sub { display: none; }
  .menu-btn { display: inline-flex; }
  .nav__indicator { display: none; }
  .nav__list {
    position: fixed; left: 0; right: 0; top: var(--header-h);
    flex-direction: column; gap: 0;
    padding: 8px var(--gutter) 24px;
    background: rgba(5, 5, 6, .97);
    border-bottom: 1px solid var(--line);
    opacity: 0; visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--t-std) var(--ease-std), transform var(--t-std) var(--ease-std), visibility 0s linear var(--t-std);
  }
  .nav__list.is-open {
    opacity: 1; visibility: visible; transform: none;
    transition: opacity var(--t-std) var(--ease-std), transform var(--t-std) var(--ease-emph), visibility 0s;
  }
  .nav__list a {
    min-height: 56px; padding: 0;
    font-size: 22px; font-weight: 500; letter-spacing: -.02em;
    border-bottom: 1px solid var(--line);
  }
  .nav__list a[aria-current="true"]::after {
    content: ""; width: 6px; height: 6px; margin-left: 12px; border-radius: 50%; background: var(--fg);
  }
}

/* ---------- hero ---------- */

.hero {
  position: relative;
  min-height: max(620px, min(100svh, 1080px));
  display: flex;
  padding: calc(var(--header-h) + clamp(32px, 8vh, 96px)) 0 clamp(40px, 7vh, 80px);
  overflow: hidden;
  background:
    radial-gradient(70% 55% at 72% -8%, rgba(255, 255, 255, .09), transparent 62%),
    radial-gradient(40% 40% at 8% 110%, rgba(255, 255, 255, .035), transparent 70%),
    var(--bg);
}
.hero__bg { position: absolute; inset: 0; pointer-events: none; }
.hero::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 22%; z-index: 1;
  background: linear-gradient(180deg, transparent, var(--bg));
  pointer-events: none;
}
.hero__col {
  position: absolute; top: 0; bottom: 0; width: 1px;
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, .06) 30%, rgba(255, 255, 255, .04) 70%, transparent);
  transform-origin: top;
}
.hero__col:nth-child(1) { left: 8%; }
.hero__col:nth-child(2) { left: 33%; }
.hero__col:nth-child(3) { left: 58%; }
.hero__col:nth-child(4) { left: 83%; }
.hero__sweep {
  position: absolute; top: -30%; bottom: -30%; left: 0;
  width: 40%;
  background: linear-gradient(100deg, transparent 30%, rgba(255, 255, 255, .055) 50%, transparent 70%);
  transform: translateX(-120%) skewX(-12deg);
  opacity: 0;
}

.hero__inner {
  position: relative; z-index: 2;
  display: flex; flex-direction: column;
  gap: clamp(24px, 4vh, 44px);
}
.hero__eyebrow { margin-top: auto; }

/* yazı imzası: LIXI / DEVELOPER */
.wordmark {
  font-weight: 700;
  font-size: clamp(3.3rem, min(15.4vw, 25vh), 15rem);
  line-height: .84;
  letter-spacing: -.05em;
  margin-left: -.04em;
}
.wordmark__line {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 24px;
  overflow: hidden;
  padding-bottom: .05em; margin-bottom: -.05em;
}
.wordmark__text {
  display: inline-block;
  /* üst katman: tek seferlik ışık bandı, alt katman: metal */
  background-image:
    linear-gradient(100deg, transparent 42%, rgba(255, 255, 255, .95) 50%, transparent 58%),
    linear-gradient(180deg, #ffffff 0%, #e6e8eb 26%, #a3a8af 56%, #d9dce0 78%, #8c9198 100%);
  background-size: 300% 100%, 100% 100%;
  background-position: 0% 0, 0 0;
  background-repeat: no-repeat;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}
.wordmark__text--b {
  background-image:
    linear-gradient(100deg, transparent 42%, rgba(255, 255, 255, .6) 50%, transparent 58%),
    linear-gradient(180deg, #9aa0a8 0%, #686d75 52%, #545960 72%, #7d828a 100%);
}
.wordmark__meta {
  display: flex; flex-direction: column; align-items: flex-end; gap: 10px;
  padding-top: .12em;
  font: 500 12px/1.3 var(--f-mono); letter-spacing: .18em; text-transform: uppercase;
  color: var(--fg-3);
  text-align: right;
}
.wordmark__meta b { font-weight: 500; color: var(--fg-2); }

.hero__rule { position: relative; display: block; height: 1px; width: 100%; }
.hero__rule::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .55) 50%, transparent);
}
.hero__rule::after {
  content: ""; position: absolute; left: 50%; top: -2px;
  width: 5px; height: 5px; margin-left: -2.5px; border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 12px 2px rgba(255, 255, 255, .75), 0 0 40px 8px rgba(255, 255, 255, .18);
  opacity: 0;
}

.hero__foot {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 32px;
}
.hero__copy { display: flex; flex-direction: column; gap: 22px; max-width: 600px; }
.hero__tagline {
  font-size: clamp(1.7rem, 3.2vw, 2.9rem);
  font-weight: 600;
  line-height: 1.04;
  letter-spacing: -.04em;
}
.hero__tagline > span { white-space: nowrap; }
.hero__tagline-2 { color: #6a6f77; }
.hero__lead { font-size: clamp(16px, 1.4vw, 19px); line-height: 1.5; color: var(--fg-2); max-width: 34ch; }
.hero__copy .actions { margin-top: 6px; }

.feature-chip {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
  width: 340px;
  padding: 12px 18px 12px 12px;
  border-radius: 20px;
  border: 1px solid var(--line-2);
  background: var(--brushed), linear-gradient(180deg, #16171a, #0b0c0e);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .08), 0 30px 60px -30px rgba(0, 0, 0, .9);
  transition: border-color var(--t-std) var(--ease-std), transform var(--t-enter) var(--ease-emph);
}
.feature-chip:hover { border-color: var(--line-3); transform: translateY(-2px); }
.feature-chip__img { width: 64px; height: 84px; border-radius: 10px; overflow: hidden; border: 1px solid var(--line); }
.feature-chip__img img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.feature-chip__body { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.feature-chip__kicker { font: 500 11px/1.2 var(--f-mono); letter-spacing: .18em; text-transform: uppercase; color: var(--fg-3); }
.feature-chip__title { font-size: 19px; font-weight: 600; letter-spacing: -.02em; }
.feature-chip__meta { font-size: 13px; color: var(--fg-2); }
.feature-chip__arrow { width: 18px; height: 18px; fill: none; stroke: var(--fg-2); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }

@media (max-width: 860px) {
  .hero__foot { grid-template-columns: 1fr; }
  .feature-chip { width: 100%; max-width: 420px; }
  .wordmark__meta { display: none; }
}
@media (max-width: 600px) {
  /* dar ekranda LIXI büyür, DEVELOPER satırı genişliği taşır */
  .wordmark__line:first-child .wordmark__text { font-size: 1.75em; }
}
@media (max-width: 480px) {
  .hero__col:nth-child(2), .hero__col:nth-child(4) { display: none; }
  .hero__copy .actions .btn { flex: 1 1 auto; justify-content: center; }
}

/* açılış koreografisi: çizgi ortadan açılır, yazı çizgiden yükselir, ışık bir kez geçer */
@media (prefers-reduced-motion: no-preference) {
  .hero__rule::before { animation: drawX 1300ms var(--ease-emph) 150ms backwards; }
  .hero__rule::after { animation: flare 1600ms var(--ease-std) 150ms; }
  .hero__eyebrow { animation: fadeUp 800ms var(--ease-emph) 450ms backwards; }
  .wordmark__line > .wordmark__text {
    animation: lineUp 1150ms var(--ease-emph) 380ms backwards, sheen 1500ms var(--ease-std) 1250ms backwards;
  }
  .wordmark__line + .wordmark__line > .wordmark__text { animation-delay: 520ms, 1420ms; }
  .wordmark__meta { animation: fadeUp 800ms var(--ease-emph) 1000ms backwards; }
  .hero__copy { animation: fadeUp 900ms var(--ease-emph) 1050ms backwards; }
  .feature-chip { animation: fadeUp 900ms var(--ease-emph) 1200ms backwards; }
  .hero__col { animation: drawY 1800ms var(--ease-emph) 200ms backwards; }
  .hero__col:nth-child(2) { animation-delay: 280ms; }
  .hero__col:nth-child(3) { animation-delay: 360ms; }
  .hero__col:nth-child(4) { animation-delay: 440ms; }
  .hero__sweep { animation: sweep 2400ms var(--ease-std) 1100ms forwards; }
}
@keyframes lineUp { from { transform: translateY(110%); } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(16px); } }
@keyframes drawX { from { transform: scaleX(0); } }
@keyframes drawY { from { transform: scaleY(0); } }
@keyframes flare {
  0% { opacity: 0; transform: scale(.4); }
  25% { opacity: 1; transform: scale(1.4); }
  100% { opacity: 0; transform: scale(.6); }
}
/* ışık bandını soldan sağa taşır; yalnızca açılışta bir kez boyanır */
@keyframes sheen { from { background-position: 100% 0, 0 0; } }
@keyframes sweep {
  0% { opacity: 0; transform: translateX(-120%) skewX(-12deg); }
  15% { opacity: 1; }
  85% { opacity: 1; }
  100% { opacity: 0; transform: translateX(320%) skewX(-12deg); }
}

/* ---------- kaydırmada görünme (bölüm düzeyinde, tek seferlik) ---------- */

@media (prefers-reduced-motion: no-preference) {
  .js [data-reveal] {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 900ms var(--ease-emph), transform 900ms var(--ease-emph);
  }
  .js [data-reveal].is-in { opacity: 1; transform: none; }
}

/* ---------- bölümler ---------- */

.section { position: relative; padding-block: clamp(96px, 13vw, 184px); }
.section + .section { border-top: 1px solid var(--line); }

.section-head {
  display: flex; align-items: center; gap: 16px;
  margin-bottom: clamp(48px, 7vw, 96px);
  font: 500 12px/1.2 var(--f-mono); letter-spacing: .2em; text-transform: uppercase;
  color: var(--fg-2);
}
.section-head__idx { color: var(--fg); }
.section-head__label { font: inherit; letter-spacing: inherit; }
.section-head__rule {
  flex: 1; height: 1px; min-width: 24px;
  background: linear-gradient(90deg, var(--line-3), var(--line) 60%, transparent);
}
.section-head__aside { color: var(--fg-3); }
.section-head--stack { flex-direction: column; align-items: flex-start; gap: 10px; margin-bottom: 0; }

@media (max-width: 560px) {
  .section-head__aside { display: none; }
}

/* ---------- Lixi Wallet ---------- */

.lixi {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  grid-template-areas: "info media" "rail rail";
  gap: clamp(40px, 5vw, 72px) clamp(32px, 5vw, 80px);
}
.lixi__info { grid-area: info; display: flex; flex-direction: column; gap: 28px; }
.lixi__media { grid-area: media; }
.rail-wrap { grid-area: rail; }

.lixi__brand { display: flex; align-items: center; gap: 16px; }
.lixi__icon { width: 56px; height: 56px; border-radius: 14px; box-shadow: 0 0 0 1px var(--line-2), 0 18px 40px -18px rgba(39, 72, 168, .8); }
.lixi__tag { font: 500 12px/1.3 var(--f-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--fg-2); }

.lixi__title {
  font-size: clamp(3.2rem, 7vw, 6.5rem);
  font-weight: 600;
  line-height: .95;
  letter-spacing: -.055em;
  padding-bottom: .06em;
}
.lixi__desc { font-size: clamp(18px, 1.6vw, 22px); line-height: 1.45; color: var(--fg-2); max-width: 34ch; }

.specs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.specs > div { padding: 16px 0; border-bottom: 1px solid var(--line); }
.specs > div:nth-child(odd) { padding-right: 16px; }
.specs > div:nth-child(even) { padding-left: 16px; border-left: 1px solid var(--line); }
.specs dt { font: 500 11px/1.3 var(--f-mono); letter-spacing: .16em; text-transform: uppercase; color: var(--fg-3); margin-bottom: 6px; }
.specs dd { font-size: 15px; line-height: 1.4; color: var(--fg); }

.caption {
  margin-top: auto;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  min-height: 150px;
}
.caption__count { font: 500 12px/1 var(--f-mono); letter-spacing: .16em; color: var(--fg-3); margin-bottom: 14px; }
.caption__count .caption__index { color: var(--fg); }
.caption__sep { margin: 0 4px; }
.caption__title { font-size: 26px; font-weight: 600; letter-spacing: -.03em; margin-bottom: 8px; }
.caption__text { color: var(--fg-2); max-width: 42ch; }
.caption.is-swapping > * { opacity: 0; transform: translateY(6px); }
.caption > * { transition: opacity var(--t-std) var(--ease-std), transform var(--t-enter) var(--ease-emph); }

/* sahne */
.stage {
  position: relative;
  display: flex; align-items: center; justify-content: center;
  height: clamp(500px, 78vh, 820px);
  max-height: 820px;
  border-radius: 28px;
  border: 1px solid var(--line);
  background:
    radial-gradient(60% 50% at 50% 0%, rgba(255, 255, 255, .07), transparent 70%),
    var(--brushed),
    linear-gradient(180deg, #111215, #070708);
  overflow: hidden;
}
.stage__light {
  position: absolute; left: 10%; right: 10%; top: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .5), transparent);
}
.stage__frame {
  position: relative;
  display: flex;
  height: calc(100% - clamp(56px, 8vh, 96px));
  max-width: calc(100% - 136px);
  border-radius: 22px;
  cursor: zoom-in;
  transition: transform var(--t-enter) var(--ease-emph);
}
.stage__frame img {
  height: 100%; width: auto; max-width: 100%;
  object-fit: contain;
  border-radius: 22px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, .16), 0 40px 80px -30px rgba(0, 0, 0, .95), 0 0 120px -40px rgba(255, 255, 255, .18);
  background: #eef1f5;
  transition: opacity var(--t-std) var(--ease-std), transform var(--t-enter) var(--ease-emph);
}
.stage__frame.is-swapping img { opacity: 0; transform: scale(.985); }
.stage__frame:hover { transform: translateY(-3px); }
.stage__zoom {
  position: absolute; right: 12px; top: 12px;
  display: grid; place-items: center;
  width: 40px; height: 40px; border-radius: 999px;
  background: rgba(5, 5, 6, .8); border: 1px solid var(--line-2);
  opacity: 0; transition: opacity var(--t-std) var(--ease-std);
}
.stage__zoom svg { width: 16px; height: 16px; fill: none; stroke: var(--fg); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.stage__frame:hover .stage__zoom, .stage__frame:focus-visible .stage__zoom { opacity: 1; }

.stage__error {
  position: absolute; inset: auto 24px 50%; text-align: center; color: var(--fg-2);
}
.stage__nav {
  position: absolute; left: 20px; right: 20px; top: 50%;
  display: flex; justify-content: space-between;
  transform: translateY(-50%);
  pointer-events: none;
}
.stage__nav .icon-btn { pointer-events: auto; }

/* küçük resim şeridi */
.rail {
  display: flex; gap: 12px;
  overflow-x: auto;
  padding: 4px 2px 14px;
  scroll-snap-type: x mandatory;
  scroll-padding-inline: 2px;
  scrollbar-width: thin;
  scrollbar-color: var(--line-2) transparent;
}
.thumb {
  flex: 0 0 auto;
  scroll-snap-align: start;
  display: flex; flex-direction: column; gap: 10px;
  width: clamp(96px, 10vw, 128px);
  text-align: left;
}
.thumb img {
  width: 100%; aspect-ratio: 3 / 4;
  object-fit: cover; object-position: top;
  border-radius: 12px;
  border: 1px solid var(--line);
  opacity: .6;
  filter: grayscale(.7) brightness(.8);
  transition: opacity var(--t-std) var(--ease-std), border-color var(--t-std) var(--ease-std), filter var(--t-enter) var(--ease-std), transform var(--t-enter) var(--ease-emph);
}
.thumb span {
  font: 500 11px/1.2 var(--f-mono); letter-spacing: .12em; text-transform: uppercase;
  color: var(--fg-3);
  transition: color var(--t-std) var(--ease-std);
  white-space: nowrap;
}
.thumb:hover img { opacity: .85; transform: translateY(-2px); }
.thumb[aria-selected="true"] img { opacity: 1; filter: none; border-color: rgba(255, 255, 255, .55); }
.thumb[aria-selected="true"] span { color: var(--fg); }
.thumb:focus-visible { outline-offset: 4px; }

.note { margin-top: 18px; font-size: 13px; color: var(--fg-3); }

@media (max-width: 1023px) {
  .lixi {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas: "info" "media" "rail";
  }
  .caption { min-height: 0; order: 10; }
  .lixi__info { display: contents; }
  .lixi__info > * { grid-column: 1; }
  .lixi { grid-template-areas: none; }
  .lixi__brand { order: 1; } .lixi__title { order: 2; } .lixi__desc { order: 3; }
  .lixi__info > .specs { order: 4; } .lixi__info > .actions { order: 5; }
  .lixi__media { grid-area: auto; order: 6; }
  .caption { order: 7; margin-top: 0; }
  .rail-wrap { grid-area: auto; order: 8; }
  .lixi { gap: 24px; }
  .lixi__media { margin-top: 16px; }
}
@media (max-width: 560px) {
  .stage { height: min(74svh, 620px); border-radius: 22px; }
  .stage__nav { left: 10px; right: 10px; }
  .stage__nav .icon-btn { width: 44px; height: 44px; }
  .specs { grid-template-columns: 1fr; }
  .specs > div:nth-child(odd), .specs > div:nth-child(even) { padding: 14px 0; border-left: 0; }
  .lixi__info > .actions .btn, .lixi > .actions .btn { flex: 1 1 auto; justify-content: center; }
}

/* ---------- Kitap Raporu (yatay masaüstü ekranları) ---------- */

.kr { margin-top: clamp(120px, 14vw, 200px); display: flex; flex-direction: column; gap: clamp(28px, 4vw, 48px); }
.kr > .section-head { margin-bottom: clamp(8px, 2vw, 24px); }

.kr__head {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  align-items: end;
  gap: clamp(32px, 5vw, 80px);
}
.kr__intro { display: flex; flex-direction: column; gap: 24px; }
.kr__icon { width: 56px; height: 56px; border-radius: 14px; box-shadow: 0 0 0 1px var(--line-2), 0 18px 40px -18px rgba(99, 102, 241, .7); }
.kr__title {
  font-size: clamp(3rem, 6.4vw, 6rem);
  font-weight: 600;
  line-height: .95;
  letter-spacing: -.055em;
  padding-bottom: .06em;
}

.stage--wide {
  height: auto;
  max-height: none;
  padding: clamp(14px, 3vw, 44px);
}
.stage--wide .stage__frame { height: auto; width: 100%; max-width: 100%; border-radius: 14px; }
.stage--wide .stage__frame img {
  width: 100%; height: auto;
  border-radius: 14px;
  background: #f4f6fb;
}

.kr__foot {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 7fr) auto;
  align-items: start;
  gap: clamp(20px, 3vw, 40px);
}
.kr__foot .caption { margin-top: 0; padding-top: 20px; min-height: 0; }
.kr__rail { min-width: 0; padding-top: 20px; border-top: 1px solid var(--line); }
.kr__nav { display: flex; gap: 10px; padding-top: 20px; }

.thumb--wide { width: clamp(140px, 13vw, 180px); }
.thumb--wide img { aspect-ratio: 16 / 10; }

.kr__features {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line-2);
}
.kr__features li { padding: 24px 24px 8px 0; display: flex; flex-direction: column; gap: 8px; }
.kr__features li + li { padding-left: 24px; border-left: 1px solid var(--line); }
.kr__features h4 { font-size: 17px; font-weight: 600; letter-spacing: -.02em; }
.kr__features p { font-size: 15px; color: var(--fg-2); }
.kr > .note { margin-top: -16px; }

@media (max-width: 1023px) {
  .kr__head { grid-template-columns: 1fr; }
  .kr__foot { grid-template-columns: minmax(0, 1fr) auto; }
  .kr__foot .caption { grid-column: 1 / -1; }
  .kr__features { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .kr__features li:nth-child(3) { padding-left: 0; border-left: 0; }
  .kr__features li:nth-child(n+3) { border-top: 1px solid var(--line); }
}
@media (max-width: 600px) {
  .kr__foot { grid-template-columns: minmax(0, 1fr); }
  .kr__nav { justify-content: flex-end; padding-top: 0; }
  .kr__features { grid-template-columns: 1fr; }
  .kr__features li, .kr__features li + li { padding: 20px 0 16px; border-left: 0; }
  .kr__features li + li { border-top: 1px solid var(--line); }
}

/* ---------- proje detayları ---------- */

.detail { margin-top: clamp(120px, 14vw, 200px); }
.detail__head { display: flex; flex-direction: column; gap: 16px; margin-bottom: clamp(40px, 5vw, 72px); }
.detail__title { font-size: clamp(2.2rem, 4.6vw, 4rem); font-weight: 600; letter-spacing: -.045em; line-height: 1; }

.detail__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line-2);
}
.block {
  padding: 28px 28px 36px 0;
  display: flex; flex-direction: column; gap: 14px;
}
.block + .block { padding-left: 28px; border-left: 1px solid var(--line); }
.block__idx { font: 500 12px/1 var(--f-mono); color: var(--fg-3); letter-spacing: .16em; }
.block__title { font-size: 20px; font-weight: 600; letter-spacing: -.02em; }
.block p { color: var(--fg-2); font-size: 16px; }
.block__list { display: flex; flex-direction: column; gap: 10px; }
.block__list li { position: relative; padding-left: 18px; color: var(--fg-2); font-size: 15.5px; line-height: 1.5; }
.block__list li::before { content: ""; position: absolute; left: 0; top: .72em; width: 8px; height: 1px; background: var(--fg-3); }

@media (max-width: 1023px) {
  .detail__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .block:nth-child(3) { padding-left: 0; border-left: 0; }
  .block:nth-child(n+3) { border-top: 1px solid var(--line); }
}
@media (max-width: 600px) {
  .detail__grid { grid-template-columns: 1fr; }
  .block, .block + .block { padding: 24px 0 28px; border-left: 0; }
  .block + .block { border-top: 1px solid var(--line); }
}

/* fişten işleme */
.receipt {
  margin-top: clamp(56px, 7vw, 96px);
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  align-items: center;
  gap: clamp(32px, 5vw, 72px);
  padding: clamp(28px, 4vw, 56px);
  border-radius: 28px;
  border: 1px solid var(--line);
  background: radial-gradient(60% 80% at 20% 50%, rgba(255, 255, 255, .05), transparent 70%), var(--brushed), var(--panel);
}
.receipt__pair { display: flex; align-items: center; justify-content: center; gap: clamp(16px, 3vw, 40px); }
.receipt__paper {
  width: clamp(130px, 18vw, 230px);
  border-radius: 6px;
  transform: rotate(-4deg);
  box-shadow: 0 30px 60px -20px rgba(0, 0, 0, .9);
}
.receipt__link { position: relative; width: clamp(32px, 6vw, 88px); height: 1px; background: linear-gradient(90deg, transparent, var(--line-3), transparent); }
.receipt__link span { position: absolute; right: 0; top: -3px; width: 7px; height: 7px; border-radius: 50%; background: var(--fg); box-shadow: 0 0 14px rgba(255, 255, 255, .7); }
.receipt__screen {
  width: clamp(130px, 16vw, 210px);
  border-radius: 14px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, .16), 0 30px 60px -20px rgba(0, 0, 0, .9);
}
.receipt figcaption { display: flex; flex-direction: column; gap: 14px; color: var(--fg-2); font-size: clamp(17px, 1.6vw, 21px); line-height: 1.5; max-width: 30ch; }
@media (max-width: 760px) {
  .receipt { grid-template-columns: 1fr; }
}

/* koyu tema şeridi */
.dark-strip { margin-top: clamp(56px, 7vw, 96px); }
.dark-strip__cap { display: flex; flex-wrap: wrap; align-items: baseline; gap: 12px 24px; margin-bottom: 24px; color: var(--fg-2); font-size: 15px; }
.dark-strip__list {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: clamp(10px, 1.4vw, 20px);
}
.dark-strip__list li { border-radius: 16px; overflow: hidden; border: 1px solid var(--line-2); background: #0a101c; }
.dark-strip__list img { width: 100%; aspect-ratio: 9 / 16; object-fit: cover; object-position: top; transition: transform 600ms var(--ease-emph); }
.dark-strip__list li:hover img { transform: scale(1.025); }
@media (max-width: 860px) {
  .dark-strip__list {
    display: flex; overflow-x: auto; scroll-snap-type: x mandatory;
    margin-inline: calc(-1 * var(--gutter)); padding: 0 var(--gutter) 12px;
    scroll-padding-inline: var(--gutter);
  }
  .dark-strip__list li { flex: 0 0 46%; scroll-snap-align: start; }
}

/* sıradaki */
.next {
  margin-top: clamp(96px, 12vw, 168px);
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(20px, 4vw, 56px);
  padding: clamp(28px, 4vw, 48px);
  border: 1px dashed var(--line-2);
  border-radius: 24px;
}
.next__idx { font: 500 13px/1 var(--f-mono); letter-spacing: .16em; color: var(--fg-3); }
.next__title { font-size: clamp(22px, 2.4vw, 30px); font-weight: 600; letter-spacing: -.03em; margin-bottom: 6px; }
.next__body p { color: var(--fg-2); font-size: 16px; }
.next__slot {
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--line-2) 0 6px, transparent 6px 12px);
}
@media (max-width: 700px) {
  .next { grid-template-columns: 1fr; }
  .next__slot { display: none; }
}

/* ---------- yaklaşım ---------- */

.approach__lead {
  font-size: clamp(1.9rem, 4.2vw, 3.75rem);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -.04em;
  max-width: 22ch;
  margin-bottom: clamp(56px, 8vw, 112px);
}
.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  counter-reset: s;
}
.step {
  position: relative;
  padding: 28px 28px 8px 0;
  border-top: 1px solid var(--line-2);
}
.step + .step { padding-left: 28px; }
.step::before {
  content: ""; position: absolute; left: 0; top: -1px; width: 40px; height: 1px; background: var(--fg);
}
.step + .step::before { left: 28px; }
.step__idx { display: block; font: 500 12px/1 var(--f-mono); letter-spacing: .16em; color: var(--fg-3); margin-bottom: 32px; }
.step__title { font-size: 24px; font-weight: 600; letter-spacing: -.03em; margin-bottom: 10px; }
.step p { color: var(--fg-2); font-size: 16px; }

@media (max-width: 960px) {
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 40px; }
  .step:nth-child(3) { padding-left: 0; }
  .step:nth-child(3)::before { left: 0; }
}
@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; row-gap: 32px; }
  .step, .step + .step { padding-left: 0; padding-right: 0; }
  .step + .step::before { left: 0; }
  .step__idx { margin-bottom: 18px; }
}

/* ---------- hakkımda ---------- */

.about__grid {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
  gap: clamp(32px, 5vw, 80px);
}
.about__quote {
  font-size: clamp(1.9rem, 4vw, 3.5rem);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -.04em;
  margin-bottom: clamp(36px, 5vw, 64px);
}
.about__text { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px clamp(24px, 4vw, 56px); color: var(--fg-2); }
.about__facts { margin-top: 40px; display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); border-top: 1px solid var(--line); }
.about__facts > div { padding: 16px 16px 16px 0; border-bottom: 1px solid var(--line); }
.about__facts dt { font: 500 11px/1.3 var(--f-mono); letter-spacing: .16em; text-transform: uppercase; color: var(--fg-3); margin-bottom: 6px; }
.about__facts dd { color: var(--fg); }

@media (max-width: 860px) {
  .about__grid { grid-template-columns: 1fr; }
  .about__text { grid-template-columns: 1fr; }
}

/* ---------- teknolojiler ---------- */

.tech__list { border-top: 1px solid var(--line-2); }
.tech__row {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 7fr) minmax(0, 2fr);
  align-items: baseline;
  gap: 24px;
  padding: clamp(18px, 2.4vw, 28px) 0;
  border-bottom: 1px solid var(--line);
}
.tech__cat, .tech__src { font: 500 12px/1.3 var(--f-mono); letter-spacing: .16em; text-transform: uppercase; color: var(--fg-3); }
.tech__src { text-align: right; letter-spacing: .08em; text-transform: none; }
.tech__name {
  font-size: clamp(1.6rem, 3.6vw, 3rem);
  font-weight: 500;
  letter-spacing: -.04em;
  line-height: 1.05;
  background: linear-gradient(90deg, #8f949b, #f4f5f7 20%, #c4c8cd 60%, #8f949b 100%);
  background-size: 200% 100%;
  background-position: 100% 0;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  transition: background-position 900ms var(--ease-emph);
}
.tech__name em { font-style: normal; opacity: .35; margin: 0 .15em; }
.tech__row:hover .tech__name { background-position: 0 0; }

@media (max-width: 700px) {
  .tech__row { grid-template-columns: 1fr auto; gap: 8px 16px; }
  .tech__cat { grid-column: 1; }
  .tech__src { grid-column: 2; grid-row: 1; }
  .tech__name { grid-column: 1 / -1; }
}

/* ---------- iletişim ---------- */

.contact { overflow: hidden; }
.contact__glow {
  position: absolute; inset: 15% -10% 0;
  background: radial-gradient(45% 45% at 50% 55%, rgba(255, 255, 255, .06), transparent 100%);
  pointer-events: none;
}
.contact__body { position: relative; }
.contact__title {
  font-size: clamp(2.6rem, 7.2vw, 7rem);
  font-weight: 600;
  line-height: .98;
  letter-spacing: -.055em;
  max-width: 14ch;
  margin-bottom: 32px;
  color: #5e636b;
}
.contact__lead { font-size: clamp(17px, 1.6vw, 21px); color: var(--fg-2); max-width: 44ch; margin-bottom: clamp(40px, 5vw, 64px); }

.contact__channels { display: flex; flex-direction: column; gap: 32px; }
.contact__mail {
  align-self: flex-start;
  display: inline-flex; align-items: center; gap: 16px;
  font-size: clamp(1.4rem, 3.4vw, 2.6rem);
  font-weight: 500;
  letter-spacing: -.035em;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line-3);
  transition: border-color var(--t-std) var(--ease-std);
  overflow-wrap: anywhere;
}
.contact__mail:hover { border-color: var(--fg); }
.contact__links { display: flex; flex-wrap: wrap; gap: 10px; }
.contact__links a {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0 18px;
  border: 1px solid var(--line-2); border-radius: 999px;
  font-size: 14px; color: var(--fg-2);
  transition: color var(--t-std) var(--ease-std), border-color var(--t-std) var(--ease-std);
}
.contact__links a:hover { color: var(--fg); border-color: var(--line-3); }

.contact__empty {
  display: flex; flex-wrap: wrap; align-items: center; gap: 20px 32px;
  padding: 24px 28px;
  border: 1px solid var(--line-2);
  border-radius: 20px;
  background: var(--brushed), var(--panel);
  max-width: 760px;
}
.contact__empty p { flex: 1 1 280px; color: var(--fg-2); font-size: 16px; }

/* ---------- footer ---------- */

.footer { border-top: 1px solid var(--line); padding: clamp(56px, 8vw, 112px) 0 32px; overflow: hidden; }
.footer__sign {
  font-weight: 700;
  font-size: clamp(2.4rem, 9.6vw, 10.5rem);
  line-height: .9;
  letter-spacing: -.05em;
  white-space: nowrap;
  background: linear-gradient(180deg, #e8eaed 0%, #8f949b 55%, #2a2c30 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: clamp(32px, 5vw, 56px);
}
.footer__row {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 24px;
  padding-top: 24px; border-top: 1px solid var(--line);
  font-size: 13px; color: var(--fg-3);
}
.footer__presents { font-family: var(--f-mono); letter-spacing: .2em; font-size: 11px; color: var(--fg-2); }
.footer__top { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; color: var(--fg-2); }
.footer__top svg { width: 14px; height: 14px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.footer__top:hover { color: var(--fg); }

/* ---------- lightbox ---------- */

.lightbox {
  width: 100%; height: 100%; max-width: none; max-height: none;
  margin: 0; padding: 0; border: 0;
  background: transparent; color: var(--fg);
}
.lightbox::backdrop { background: rgba(3, 3, 4, .94); }
.lightbox__inner { position: relative; width: 100%; height: 100%; display: grid; place-items: center; padding: 64px 80px 40px; }
.lightbox__fig { display: flex; flex-direction: column; align-items: center; gap: 16px; max-height: 100%; }
.lightbox__fig img {
  max-height: calc(100svh - 160px); width: auto;
  border-radius: 20px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, .16);
  background: #eef1f5;
}
.lightbox__fig figcaption { display: flex; align-items: center; gap: 14px; font-size: 15px; }
.lightbox__prev, .lightbox__next { position: absolute; top: 50%; transform: translateY(-50%); }
.lightbox__prev { left: 20px; }
.lightbox__next { right: 20px; }
.lightbox__close { position: absolute; top: 16px; right: 20px; }
@media (prefers-reduced-motion: no-preference) {
  .lightbox[open] .lightbox__fig { animation: fadeUp var(--t-enter) var(--ease-emph); }
}
@media (max-width: 600px) {
  .lightbox__inner { padding: 64px 12px 96px; }
  .lightbox__prev, .lightbox__next { top: auto; bottom: 24px; transform: none; }
  .lightbox__prev { left: calc(50% - 60px); }
  .lightbox__next { right: calc(50% - 60px); }
  .lightbox__fig img { max-height: calc(100svh - 200px); }
}

/* ---------- hareket azaltma ---------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .hero__sweep { display: none; }
}