/* ————————————————————————————————————————————————
   AI Research Lab · logodan türeyen kimlik
   gece   : neredeyse siyah lacivert zemin (logonun doğal ortamı)
   krom   : gümüş/açık gri metin — logodaki metalik kenar
   devre  : elektrik mavisi vurgu — logodaki devre izleri
   Sinyal : logo, parlak krom bir levha üzerinde yanan bir devre —
   bu kimliği düz bir sayfada değil, derinliği olan, ışığı hareket
   eden bir yüzeyde anlatıyoruz (3D eğim, cam parlaklık, akan izler).
   Mobil öncelikli: temel stiller telefon içindir,
   min-width sorgularıyla genişler.
   ———————————————————————————————————————————————— */

:root {
  --gece: #070b12;
  --gece-2: #0b1220;
  --panel: #101827;
  --panel-2: #182338;
  --krom: #e6eaf2;
  --krom-soft: #94a0b4;
  --krom-hi: #f6f8fd;
  --devre: #3b82f6;
  --devre-parlak: #60a5fa;
  --devre-glow: rgba(59, 130, 246, 0.45);
  --devre-glow-strong: rgba(96, 165, 250, 0.6);
  --line: rgba(148, 160, 180, 0.18);
  --line-soft: rgba(148, 160, 180, 0.09);

  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --space: clamp(1.15rem, 4vw, 2.5rem);
  --max: 72rem;
  --header-h: 4rem;

  --ease-fluid: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.5, 0.64, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1rem);
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--krom);
  background:
    radial-gradient(ellipse 90% 32% at 50% 0%, rgba(59, 130, 246, 0.07), transparent 60%),
    var(--gece);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--devre-parlak);
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
}

a:hover {
  color: var(--krom);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--devre);
  outline-offset: 3px;
  border-radius: 2px;
}

::selection {
  background: var(--devre);
  color: #fff;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3.5rem;
  z-index: 100;
  padding: 0.55rem 1rem;
  background: var(--devre);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-decoration: none;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 1rem;
}

.is-hidden {
  display: none !important;
}

/* ——— Bölüm etiketi ——— */
.section__label {
  margin: 0 0 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--devre-parlak);
}

.section__label::before {
  content: "▲ ";
  font-size: 0.6em;
  vertical-align: 0.2em;
  color: var(--krom-soft);
}

/* ——— Header ——— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(7, 11, 18, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line-soft);
}

/* akan devre izi — kaydırma ilerlemesi */
.scroll-progress {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--line-soft);
  overflow: hidden;
  z-index: 1;
}

.scroll-progress span {
  display: block;
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--devre), var(--devre-parlak));
  transform: scaleX(0);
  transform-origin: 0 50%;
  box-shadow: 0 0 10px var(--devre-glow-strong);
}

.site-header__inner {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--space);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-left: auto;
}

.lang-switch {
  position: relative;
  z-index: 5;
}

.lang-switch__flag {
  width: 1.1rem;
  height: 0.75rem;
  object-fit: cover;
  border-radius: 2px;
  flex-shrink: 0;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.lang-switch__trigger {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-width: 4.6rem;
  margin: 0;
  padding: 0.4rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: transparent;
  color: var(--krom-soft);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  line-height: 1;
  cursor: pointer;
}

.lang-switch__trigger:hover,
.lang-switch.is-open .lang-switch__trigger {
  color: var(--krom);
  border-color: rgba(96, 165, 250, 0.45);
}

.lang-switch__chevron {
  width: 0.35rem;
  height: 0.35rem;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-0.1rem) rotate(45deg);
  transition: transform 0.2s var(--ease-fluid);
}

.lang-switch.is-open .lang-switch__chevron {
  transform: translateY(0.05rem) rotate(225deg);
}

.lang-switch__menu {
  position: absolute;
  top: calc(100% + 0.35rem);
  right: 0;
  min-width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  padding: 0.25rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: rgba(11, 18, 32, 0.96);
  box-shadow: 0 14px 36px -18px rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(10px);
}

.lang-switch__menu[hidden] {
  display: none;
}

.lang-switch__option-form {
  margin: 0;
}

.lang-switch__option {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  margin: 0;
  padding: 0.45rem 0.65rem;
  border: none;
  border-radius: 3px;
  background: transparent;
  color: var(--krom-soft);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  line-height: 1;
  text-align: left;
  cursor: pointer;
}

.lang-switch__option:hover {
  background: var(--panel);
  color: var(--krom);
}

.lang-switch__option.is-active {
  background: var(--panel);
  color: var(--devre-parlak);
}

.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--krom);
  min-width: 0;
}

.site-logo__img {
  width: 2.3rem;
  height: auto;
  flex-shrink: 0;
  filter: drop-shadow(0 2px 6px rgba(59, 130, 246, 0.35));
  transition: transform 0.35s var(--ease-fluid), filter 0.35s ease;
}

.site-logo:hover .site-logo__img {
  transform: rotate(-6deg) scale(1.06);
  filter: drop-shadow(0 4px 12px rgba(96, 165, 250, 0.55));
}

.site-logo__text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.nav-toggle {
  display: block;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--krom);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.5rem 0.9rem;
  border-radius: 3px;
  cursor: pointer;
}

.nav-toggle:hover {
  border-color: var(--devre);
  color: var(--devre-parlak);
}

.site-nav {
  display: none;
  position: absolute;
  top: var(--header-h);
  right: var(--space);
  left: var(--space);
  flex-direction: column;
  align-items: stretch;
  padding: 0.4rem 0;
  background: var(--gece-2);
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.55);
}

.site-nav.is-open {
  display: flex;
}

.site-nav a {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--krom);
  text-decoration: none;
  padding: 0.9rem 1.15rem;
}

.site-nav a:hover {
  background: var(--panel);
  color: var(--devre-parlak);
}

.site-nav__cta {
  border-top: 1px solid var(--line-soft);
  color: var(--devre-parlak) !important;
}

@media (min-width: 761px) {
  .site-header__inner {
    gap: 1.25rem;
  }

  .site-header__actions {
    order: 3;
    margin-left: 0;
  }

  .nav-toggle {
    display: none;
  }

  .site-nav {
    display: flex;
    position: static;
    flex-direction: row;
    align-items: center;
    gap: 0.4rem;
    padding: 0;
    background: transparent;
    border: none;
    box-shadow: none;
    margin-left: auto;
  }

  .site-nav a {
    font-size: 0.88rem;
    padding: 0.45rem 0.85rem;
    border-radius: 4px;
  }

  .site-nav a:hover {
    background: var(--panel);
    color: var(--devre-parlak);
  }

  .site-nav__cta {
    margin-left: 0.5rem;
    border: 1px solid var(--devre) !important;
    border-top: 1px solid var(--devre) !important;
  }

  .site-nav__cta:hover {
    background: var(--devre) !important;
    color: #fff !important;
  }
}

/* ——— Hero ——— */
.hero {
  position: relative;
  overflow: hidden;
  text-align: center;
  isolation: isolate;
  border-bottom: 1px solid var(--line-soft);
  background:
    radial-gradient(ellipse 120% 60% at 50% -10%, rgba(59, 130, 246, 0.16), transparent 62%),
    var(--gece);
}

@media (min-width: 761px) {
  .hero {
    min-height: min(88vh, 840px);
    display: flex;
    align-items: center;
  }
}

/* Devre izi dokusu: ince dikey çizgiler, logodaki hatlar gibi */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 4.5rem 100%;
  background-position: center;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 75%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 75%);
}

/* WebGL sahnesi: tüm sayfanın arkasında sabit duran 3B katman.
   Obje kaydırmayla bölümden bölüme uçar; bölüm arkaplanları
   yarı saydamlaşarak sahneyi gösterir. */
.scene-canvas {
  position: fixed;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* WebGL çalışıyorsa düz logo ve CSS dekoru devre dışı — 3B sahne devralır */
body.has-webgl .hero__chip-float,
body.has-webgl .hero__floor,
body.has-webgl .hero__glow {
  display: none;
}

body.has-webgl .hero {
  background: transparent;
}

body.has-webgl .section--alt {
  background: rgba(11, 18, 32, 0.78);
}

body.has-webgl .site-footer {
  background: rgba(11, 18, 32, 0.92);
}

body.has-webgl .hero__inner {
  padding-top: clamp(10rem, 26vh, 14rem);
}

body.has-webgl .hero__title {
  font-size: clamp(2.2rem, 6.4vw, 4.35rem);
}

body.has-webgl .hero__title,
body.has-webgl .hero__lead,
body.has-webgl .hero__eyebrow {
  text-shadow: 0 2px 18px rgba(7, 11, 18, 0.85), 0 1px 6px rgba(7, 11, 18, 0.9);
}

body.has-webgl .hero__title em {
  text-shadow: none;
}

@media (max-width: 700px) {
  body.has-webgl .hero__inner {
    padding-top: clamp(8.5rem, 24vh, 11rem);
  }
}

/* Film greni: tüm sayfada çok hafif doku */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 60;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* 3D sahne: sanki kart logonun devre levhası devam ediyor gibi bir zemin */
.hero__scene {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  perspective: 1200px;
  overflow: hidden;
  transform: translate3d(calc(var(--px, 0) * 14px), calc(var(--py, 0) * 10px), 0);
  transition: transform 0.5s var(--ease-fluid);
}

.hero__floor {
  position: absolute;
  left: 50%;
  bottom: -14%;
  width: 190%;
  height: 80%;
  transform: translateX(-50%) rotateX(76deg);
  transform-origin: bottom center;
  background-image:
    linear-gradient(var(--devre-parlak) 1px, transparent 1px),
    linear-gradient(90deg, var(--devre-parlak) 1px, transparent 1px),
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 17rem 17rem, 17rem 17rem, 3.4rem 3.4rem, 3.4rem 3.4rem;
  mask-image: radial-gradient(ellipse 65% 95% at 50% 18%, #000 0%, transparent 85%);
  -webkit-mask-image: radial-gradient(ellipse 65% 95% at 50% 18%, #000 0%, transparent 85%);
  opacity: 0.7;
  animation: floor-flow 9s linear infinite;
}

.hero__floor::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--devre-parlak), transparent);
  box-shadow: 0 0 26px 4px var(--devre-glow-strong);
}

.hero__glow {
  position: absolute;
  width: 26rem;
  height: 26rem;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.55;
  will-change: transform;
  animation: floaty 11s ease-in-out infinite alternate;
}

.hero__glow--a {
  top: -8%;
  left: 8%;
  background: radial-gradient(circle, var(--devre-glow), transparent 68%);
}

.hero__glow--b {
  top: 4%;
  right: 4%;
  width: 20rem;
  height: 20rem;
  background: radial-gradient(circle, rgba(230, 234, 242, 0.14), transparent 70%);
  animation-delay: -5s;
  animation-duration: 13s;
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 62rem;
  margin: 0 auto;
  padding: clamp(3rem, 9vh, 5.5rem) var(--space) clamp(3.5rem, 9vh, 6rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  transform: translateY(calc(var(--hero-scroll, 0) * -34px));
  opacity: calc(1 - (var(--hero-scroll, 0) * 0.55));
}

.hero__chip-float {
  margin-bottom: 1.75rem;
  perspective: 900px;
  animation: chip-idle 7s ease-in-out infinite;
}

.hero__chip {
  position: relative;
  display: inline-block;
  transform: perspective(700px) rotateX(var(--rx, 0)) rotateY(var(--ry, 0));
  transition: transform 0.3s var(--ease-fluid);
  will-change: transform;
}

.hero__chip::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -0.6rem;
  width: 62%;
  height: 1.1rem;
  transform: translateX(-50%);
  background: radial-gradient(ellipse, var(--devre-glow), transparent 72%);
  filter: blur(7px);
  z-index: -1;
}

.hero__mark {
  width: clamp(5.5rem, 18vw, 8rem);
  height: auto;
  filter: drop-shadow(0 18px 42px rgba(59, 130, 246, 0.35));
  opacity: 0;
}

.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--krom-soft);
  opacity: 0;
}

.tick {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--devre);
  box-shadow: 0 0 12px var(--devre);
  flex-shrink: 0;
  animation: pulse 2.4s ease-in-out infinite;
}

.hero__title {
  margin: 0 0 1.15rem;
  max-width: 36ch;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 5.8vw, 3.75rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  opacity: 0;
}

.hero__title em {
  font-style: normal;
  background: linear-gradient(100deg, var(--devre-parlak) 10%, var(--krom-hi) 45%, var(--devre-parlak) 80%);
  background-size: 220% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: sheen-text 6s linear infinite;
}

.hero__lead {
  margin: 0 0 2rem;
  max-width: 64ch;
  font-size: clamp(1rem, 2.2vw, 1.15rem);
  color: var(--krom-soft);
  opacity: 0;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  opacity: 0;
}

.hero__scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 1.6rem;
  z-index: 1;
  width: 1.4rem;
  height: 2.3rem;
  transform: translateX(-50%);
  border: 1px solid var(--line);
  border-radius: 999px;
  display: flex;
  justify-content: center;
  padding-top: 0.45rem;
  opacity: 0;
}

.hero__scroll-cue span {
  width: 0.25rem;
  height: 0.25rem;
  border-radius: 50%;
  background: var(--devre-parlak);
  box-shadow: 0 0 8px var(--devre-parlak);
  animation: cue-drop 1.8s ease-in-out infinite;
}

@media (max-width: 760px) {
  .hero__scroll-cue {
    display: none;
  }
}

/* İçerik yalnızca açılış animasyonu bittiğinde (ya da atlandığında) canlanır */
.hero.is-ready .hero__mark {
  animation: land 0.9s cubic-bezier(0.2, 0.7, 0.3, 1) forwards;
}

.hero.is-ready .hero__eyebrow {
  animation: rise 0.7s ease 0.05s forwards;
}

.hero.is-ready .hero__title {
  animation: rise 0.75s ease 0.15s forwards;
}

.hero.is-ready .hero__lead {
  animation: rise 0.75s ease 0.25s forwards;
}

.hero.is-ready .hero__actions {
  animation: rise 0.75s ease 0.35s forwards;
}

.hero.is-ready .hero__scroll-cue {
  animation: rise 0.75s ease 0.55s forwards;
}

/* ——— Butonlar ——— */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
  padding: 0.8rem 1.5rem;
  border-radius: 5px;
  border: 1px solid transparent;
  cursor: pointer;
  overflow: hidden;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease,
    box-shadow 0.25s ease, transform 0.25s var(--ease-fluid);
}

.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 30%, rgba(255, 255, 255, 0.35) 46%, transparent 62%);
  transform: translateX(-130%);
  transition: transform 0.65s var(--ease-fluid);
  pointer-events: none;
}

.btn:hover::before {
  transform: translateX(130%);
}

.btn--primary {
  background: linear-gradient(160deg, var(--devre-parlak), var(--devre) 75%);
  color: #fff;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.35) inset, 0 10px 28px -12px var(--devre-glow-strong);
}

.btn--primary:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.4) inset, 0 16px 36px -12px rgba(59, 130, 246, 0.55);
}

.btn--ghost {
  background: rgba(230, 234, 242, 0.04);
  color: var(--krom);
  border-color: var(--line);
  backdrop-filter: blur(6px);
}

.btn--ghost:hover {
  border-color: var(--devre);
  color: var(--devre-parlak);
  transform: translateY(-2px);
  background: rgba(59, 130, 246, 0.08);
}

/* ——— Bölümler ——— */
.section {
  padding: clamp(3.5rem, 9vw, 6.5rem) var(--space);
}

.section--alt {
  position: relative;
  background: var(--gece-2);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.section--alt::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--devre-parlak), transparent);
  background-size: 220% 100%;
  opacity: 0.55;
  animation: trace-flow 7s linear infinite;
}

.section__inner {
  max-width: var(--max);
  margin: 0 auto;
}

.section__header {
  max-width: 44rem;
  margin-bottom: 2.5rem;
}

.section__title {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.55rem, 4.5vw, 2.35rem);
  letter-spacing: -0.025em;
  line-height: 1.15;
  color: var(--krom);
}

.section__text {
  margin: 0;
  color: var(--krom-soft);
  max-width: 72ch;
  font-size: 1.02rem;
}

/* ——— Ürünler ——— */
.products {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 761px) {
  .products {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
}

.products .product:nth-child(2) {
  transition-delay: 0.06s;
}

.products .product:nth-child(3) {
  transition-delay: 0.12s;
}

.products .product:nth-child(4) {
  transition-delay: 0.18s;
}

/* Kart = devre modülü: köşelerde lehim noktaları, imleçle eğilen cam yüzey */
.product,
.pillar,
.contact__card {
  --mx: 50%;
  --my: 50%;
  --tx: 0deg;
  --ty: 0deg;
  --lift: 0px;
  --pop: 0px;
  position: relative;
  transform: perspective(1000px) rotateX(var(--tx)) rotateY(var(--ty)) translateY(var(--lift)) translateZ(var(--pop));
  transition: transform 0.5s var(--ease-fluid), border-color 0.25s ease, box-shadow 0.35s ease;
  will-change: transform;
}

.product,
.contact__card {
  display: flex;
  flex-direction: column;
  padding: 1.75rem 1.5rem;
  background:
    radial-gradient(circle 3px at 1rem 1rem, rgba(148, 160, 180, 0.85), transparent 62%),
    radial-gradient(circle 3px at calc(100% - 1rem) 1rem, rgba(148, 160, 180, 0.85), transparent 62%),
    radial-gradient(circle 3px at 1rem calc(100% - 1rem), rgba(148, 160, 180, 0.85), transparent 62%),
    radial-gradient(circle 3px at calc(100% - 1rem) calc(100% - 1rem), rgba(148, 160, 180, 0.85), transparent 62%),
    linear-gradient(170deg, var(--panel), var(--gece-2) 70%);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
}

.product::before,
.contact__card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(480px circle at var(--mx) var(--my), rgba(255, 255, 255, 0.12), transparent 46%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.product:hover,
.contact__card:hover {
  border-color: rgba(96, 165, 250, 0.55);
  box-shadow: 0 24px 56px -18px rgba(59, 130, 246, 0.32);
}

.product:hover::before,
.contact__card:hover::before {
  opacity: 1;
}

.product__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin-bottom: 0.9rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--line-soft);
}

.product__top h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--krom);
}

.product__tag {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--devre-parlak);
  border: 1px solid rgba(96, 165, 250, 0.35);
  border-radius: 999px;
  padding: 0.3rem 0.75rem;
  white-space: nowrap;
}

.product__desc {
  margin: 0 0 1.1rem;
  color: var(--krom-soft);
  font-size: 0.96rem;
}

.product__points {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.product__points li {
  position: relative;
  padding-left: 1.3rem;
  font-size: 0.9rem;
  color: var(--krom-soft);
}

.product__points li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--devre);
}

.product__link {
  margin-top: auto;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--devre-parlak);
  text-decoration: none;
  border-bottom: 1px solid rgba(96, 165, 250, 0.4);
  padding-bottom: 0.1rem;
}

.product__link:hover {
  color: var(--krom);
  border-bottom-color: var(--krom);
}

/* ——— Biz kimiz ——— */
.about {
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
}

.about .section__header {
  margin-bottom: 1.25rem;
}

.about__body p {
  margin: 0 0 1.1rem;
  color: var(--krom-soft);
  max-width: 62ch;
}

.about__body p:last-child {
  margin-bottom: 0;
}

@media (min-width: 861px) {
  .about {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(2rem, 5vw, 4.5rem);
  }

  .about .section__header {
    margin-bottom: 0;
  }
}

.pillars {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
}

@media (min-width: 761px) {
  .pillars {
    grid-template-columns: repeat(3, 1fr);
  }

  .pillars .pillar:nth-child(2) {
    transition-delay: 0.08s;
  }

  .pillars .pillar:nth-child(3) {
    transition-delay: 0.16s;
  }
}

.pillar {
  padding: 1.6rem 1.4rem 1.75rem;
  background: var(--gece-2);
}

.pillar:hover {
  background: var(--panel-2);
  box-shadow: 0 20px 44px -20px rgba(59, 130, 246, 0.28);
}

.pillar__tag {
  display: inline-block;
  margin-bottom: 1rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--devre-parlak);
}

.pillar h3 {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--krom);
}

.pillar p {
  margin: 0;
  color: var(--krom-soft);
  font-size: 0.92rem;
}

/* ——— Yaklaşım bandı ——— */
.band {
  padding: clamp(3.5rem, 9vw, 6.5rem) var(--space);
  background:
    radial-gradient(ellipse 90% 70% at 50% 0%, rgba(59, 130, 246, 0.1), transparent 60%),
    var(--gece);
}

.band__inner {
  max-width: var(--max);
  margin: 0 auto;
}

.band__header {
  max-width: 42rem;
  margin-bottom: 2.5rem;
}

.band__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.55rem, 4.5vw, 2.35rem);
  letter-spacing: -0.025em;
  line-height: 1.15;
  color: var(--krom);
}

.loop {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  counter-reset: adim;
}

@media (min-width: 561px) {
  .loop {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (min-width: 961px) {
  .loop {
    grid-template-columns: repeat(4, 1fr);
  }
}

.loop__step {
  counter-increment: adim;
  position: relative;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
}

.loop__step::before {
  content: "adım " counter(adim, decimal-leading-zero);
  display: block;
  margin-bottom: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--devre-parlak);
}

.loop__step::after {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 2.5rem;
  height: 2px;
  background: var(--devre);
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.6);
}

.loop__step h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--krom);
}

.loop__step p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--krom-soft);
}

/* ——— İletişim ——— */
.contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: start;
}

@media (min-width: 861px) {
  .contact {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: clamp(2rem, 5vw, 4.5rem);
  }
}

.contact__copy .section__title {
  max-width: 22ch;
}

.contact__copy .btn {
  margin-top: 1.6rem;
  max-width: 100%;
  overflow-wrap: anywhere;
}

.contact__card h3 {
  margin: 0 0 1.3rem;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--krom);
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line-soft);
}

.contact__dl {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.contact__dl div {
  margin: 0;
}

.contact__dl dt {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--devre-parlak);
  margin-bottom: 0.25rem;
}

.contact__dl dd {
  margin: 0;
  color: var(--krom-soft);
  font-size: 0.93rem;
  line-height: 1.6;
}

/* ——— Footer ——— */
.site-footer {
  position: relative;
  background: var(--gece-2);
  border-top: 1px solid var(--line-soft);
  color: var(--krom-soft);
  padding: clamp(2.5rem, 6vw, 4rem) var(--space) 1.75rem;
  font-size: 0.9rem;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--devre-parlak), transparent);
  background-size: 220% 100%;
  opacity: 0.4;
  animation: trace-flow 8s linear infinite;
}

.site-footer__inner {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
}

@media (min-width: 761px) {
  .site-footer__inner {
    grid-template-columns: 1.6fr 0.8fr 1.1fr;
    gap: 2rem 2.5rem;
  }
}

.site-footer__logo {
  width: 5.5rem;
  height: auto;
  margin-bottom: 0.9rem;
}

.site-footer__heading {
  margin: 0 0 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--devre-parlak);
}

.site-footer__brand p,
.site-footer__col p {
  margin: 0 0 0.4rem;
  line-height: 1.6;
}

.site-footer__domain {
  margin-top: 0.75rem !important;
}

.site-footer__domain a {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  color: var(--devre-parlak);
  border-bottom-color: rgba(96, 165, 250, 0.35);
}

.site-footer a {
  color: var(--krom);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.site-footer a:hover {
  color: var(--devre-parlak);
  border-bottom-color: var(--devre-parlak);
}

.site-footer__copy {
  grid-column: 1 / -1;
  margin: 1rem 0 0;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: rgba(148, 160, 180, 0.6);
}

/* ——— Basit sayfalar (gizlilik, hata) — aynı kimlik, tek panel ——— */
.page {
  position: relative;
  max-width: 46rem;
  margin: clamp(2rem, 6vw, 4rem) auto;
  padding: clamp(2.25rem, 7vw, 3.75rem) clamp(1.6rem, 5vw, 3rem);
  background:
    radial-gradient(circle 3px at 1.15rem 1.15rem, rgba(148, 160, 180, 0.85), transparent 62%),
    radial-gradient(circle 3px at calc(100% - 1.15rem) 1.15rem, rgba(148, 160, 180, 0.85), transparent 62%),
    linear-gradient(170deg, var(--panel), var(--gece-2) 75%);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.6);
  overflow: hidden;
  animation: rise 0.7s var(--ease-fluid) both;
}

.page::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--devre-parlak), transparent);
  background-size: 220% 100%;
  opacity: 0.6;
  animation: trace-flow 6s linear infinite;
}

.page h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.7rem, 5vw, 2.3rem);
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin: 0 0 1.25rem;
  color: var(--krom);
}

.page p {
  color: var(--krom-soft);
}

.page code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--panel-2);
  border: 1px solid var(--line-soft);
  border-radius: 3px;
  padding: 0.1em 0.4em;
}

/* ——— Hareket ——— */
@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(1rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes land {
  from {
    opacity: 0;
    transform: translateY(-1.25rem) scale(0.94);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.35;
  }
}

@keyframes floaty {
  from {
    transform: translate3d(0, 0, 0);
  }
  to {
    transform: translate3d(1.5rem, -1.25rem, 0);
  }
}

@keyframes floor-flow {
  from {
    background-position: 0 0, 0 0, 0 0, 0 0;
  }
  to {
    background-position: 0 17rem, 17rem 0, 0 3.4rem, 3.4rem 0;
  }
}

@keyframes chip-idle {
  0%,
  100% {
    transform: rotateY(-7deg) rotateX(3deg) translateY(0);
  }
  50% {
    transform: rotateY(7deg) rotateX(-3deg) translateY(-0.6rem);
  }
}

@keyframes trace-flow {
  from {
    background-position: 140% 0;
  }
  to {
    background-position: -80% 0;
  }
}

@keyframes sheen-text {
  from {
    background-position: 140% 0;
  }
  to {
    background-position: -80% 0;
  }
}

@keyframes cue-drop {
  0% {
    transform: translateY(0);
    opacity: 1;
  }
  70% {
    opacity: 0;
  }
  100% {
    transform: translateY(0.9rem);
    opacity: 0;
  }
}

.reveal {
  opacity: 0;
  transform: perspective(1200px) translateY(1.35rem) rotateX(6deg);
  transform-origin: 50% 100%;
  transition: opacity 0.8s var(--ease-fluid), transform 0.8s var(--ease-fluid);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .hero__mark,
  .hero__eyebrow,
  .hero__title,
  .hero__lead,
  .hero__actions,
  .hero__scroll-cue,
  .tick {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }

  .hero__title em {
    animation: none !important;
    background-position: 40% 0;
  }

  .hero__glow,
  .hero__scene,
  .hero__floor,
  .hero__chip,
  .hero__chip-float,
  .hero__inner,
  .section--alt::before,
  .site-footer::before,
  .page::before {
    animation: none !important;
    transform: none !important;
    opacity: revert !important;
  }

  .page {
    animation: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .product,
  .pillar,
  .contact__card {
    transition: none;
  }

  .product:hover,
  .contact__card:hover {
    transform: none;
  }

  .btn::before {
    display: none;
  }
}