@charset "UTF-8";
/* ==========================================================================
   ERLUSOFT — Temel katman
   Tasarım sistemi: "Mimari Karanlık" — mavi kaymalı mürekkep zemin, dört
   kademeli yükselti, saç teli kenarlıklar, tek elektrik mavisi aksan.
   Gövde metni kontrastı 9–11:1 bandında tutulur; saf siyah/saf beyaz yok.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Tasarım değişkenleri
   -------------------------------------------------------------------------- */
:root {
  /* Zemin katmanları */
  --bg-void:       #090C12;  /* en derin: html zemini, footer dibi — saf siyah değil */
  --bg-base:       #0A0D13;  /* sayfa zemini (tüm kontrast hesaplarının referansı) */
  --surface-1:     #10141C;  /* bölüm blokları, paneller */
  --surface-2:     #161B25;  /* kartlar */
  --surface-3:     #1E2531;  /* hover zemini, form alanları, çipler */

  /* Kenarlıklar */
  --hairline:        #242C3A;
  --hairline-strong: #2C3546;
  --hairline-active: #3A4659;  /* :focus-within / aktif kart sınırı */

  /* Metin — beyaz kullanılmaz, 12:1 üst sınırı aşılmaz */
  --ink-title: #C2CBDA;  /* başlıklar        11.9:1 — 12:1 tavanı kasıtlı olarak aşılmaz */
  --ink-body:  #B6C1D2;  /* gövde            ~10.7:1 */
  --ink-muted: #93A1B8;  /* ikincil          ~7.4:1  */
  --ink-faint: #8895AE;  /* meta / etiket    ~6.4:1  */

  /* Aksan — marka laciverti #1F3A6E ile aynı mavi ekseninde */
  --accent:        #4C8DFF;
  --accent-text:   #6FA8FF;  /* küçük puntolu aksan metni için */
  --accent-deep:   #1F3A6E;  /* marka laciverti: yalnız gradyan ucu */
  --accent-violet: #9B84FF;
  --accent-cyan:   #3FD8E4;
  --accent-ink:    #08111F;  /* dolu buton üstü metin */
  --accent-quiet:  #3A6FD8;  /* 200px'ten büyük dolgular (halation kesici) */
  --accent-wash:   rgba(76, 141, 255, .07);

  /* Durum renkleri */
  --success: #4CD9A0;        /* base 11.0:1 */
  --warning: #F2B33D;        /* base 10.5:1 — viewport'un %1'inden fazla kullanılmaz */
  --danger:  #FF8A93;        /* base 8.6:1 — renk tek sinyal değil, ikonla ikiye katlanır */


  /* Işık, cam, odak */
  --glow:       rgba(76, 141, 255, .26);
  --glow-soft:  rgba(76, 141, 255, .10);
  --glass:      rgba(14, 18, 26, .72);
  --focus:      #7FB2FF;

  /* Logo gradyanı (inline SVG bunları okur) */
  --logo-a: #8FB4FF;
  --logo-b: #4C8DFF;
  --logo-c: #3FD8E4;

  /* Gradyanlar */
  --grad-brand: linear-gradient(120deg, #8FB4FF 0%, #4C8DFF 45%, #3FD8E4 100%);
  --grad-btn:   linear-gradient(135deg, var(--accent) 0%, var(--accent-quiet) 100%);
  --grad-line:  linear-gradient(90deg, transparent, var(--hairline-strong) 18%, var(--hairline-strong) 82%, transparent);

  /* Tipografi */
  --font-display: 'Sora', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-body:    'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, 'SFMono-Regular', Consolas, monospace;

  --step--1: clamp(.8125rem, .79rem + .12vw, .875rem);
  --step-0:  clamp(1rem, .97rem + .16vw, 1.0625rem);
  --step-1:  clamp(1.125rem, 1.05rem + .42vw, 1.375rem);
  --step-2:  clamp(1.1875rem, 1.12rem + .35vw, 1.4375rem);
  --step-3:  clamp(1.5rem, 1.32rem + .9vw, 2rem);
  --step-4:  clamp(1.875rem, 1.5rem + 1.9vw, 3rem);
  --step-5:  clamp(2.5rem, 1.7rem + 3.6vw, 4.5rem);

  /* Ölçü ve ritim */
  --shell:      1220px;
  --shell-pad:  clamp(1.15rem, 4vw, 2.5rem);
  --gap:        clamp(1rem, 2.2vw, 1.75rem);
  --section-y:  clamp(4rem, 8vw, 7.5rem);
  --radius-sm:  10px;
  --radius:     16px;
  --radius-lg:  22px;
  --radius-xl:  28px;

  /* Gölgeler */
  --shadow-2: 0 12px 30px -12px rgba(0, 0, 0, .65);
  --shadow-3: 0 28px 64px -24px rgba(0, 0, 0, .8);

  /* Hareket */
  --ease:      cubic-bezier(.22, .61, .36, 1);
  --ease-out:  cubic-bezier(.16, 1, .3, 1);
  --dur:       .32s;
  --dur-slow:  .6s;

  --header-h: 74px;
}

/* --------------------------------------------------------------------------
   2. Sıfırlama ve temel
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scrollbar-color: var(--hairline-strong) var(--bg-base);
  background: var(--bg-void);
}

html.nav-open { overflow: hidden; }
/* Menü açıkken başlık örtünün ÜSTÜNDE kalır; aksi hâlde kapatma (X)
   düğmesi örtünün altına düşüp erişilemez oluyordu. */
html.nav-open .site-header { z-index: 95; }

body {
  min-height: 100vh;
  background: var(--bg-base);
  color: var(--ink-body);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.72;
  letter-spacing: .005em;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
}

img, svg, video, iframe { display: block; max-width: 100%; }
img, video { height: auto; }
svg { flex: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--ink-title);
  line-height: 1.14;
  letter-spacing: -.022em;
  font-weight: 700;
  text-wrap: balance;
}

h1 { font-size: var(--step-5); }
h2 { font-size: var(--step-4); }
h3 { font-size: var(--step-2); font-weight: 600; letter-spacing: -.015em; line-height: 1.3; }

p { text-wrap: pretty; }

a { color: var(--accent-text); text-decoration: none; transition: color var(--dur) var(--ease); }
a:hover { color: #93BEFF; }

ul, ol { list-style: none; padding: 0; }

button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }

strong, b { font-weight: 600; color: var(--ink-title); }

::selection { background: rgba(76, 141, 255, .3); color: #E6EDFA; }

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Özel kaydırma çubuğu (WebKit) */
::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb {
  background: var(--hairline-strong);
  border: 3px solid var(--bg-base);
  border-radius: 99px;
}
::-webkit-scrollbar-thumb:hover { background: #3A465C; }

.skip-link {
  position: fixed;
  top: -100%;
  left: 50%;
  translate: -50% 0;
  z-index: 200;
  padding: .7rem 1.3rem;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  transition: top var(--dur) var(--ease);
}
.skip-link:focus { top: 0; color: var(--accent-ink); }

/* --------------------------------------------------------------------------
   3. Ortam katmanı — aurora bulutları, ızgara, gren
   -------------------------------------------------------------------------- */
.ambient {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.ambient__blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: .5;
  will-change: transform;
}

.ambient__blob--1 {
  width: 46vw; height: 46vw;
  min-width: 380px; min-height: 380px;
  top: -14vw; left: -8vw;
  background: radial-gradient(circle, rgba(31, 58, 110, .85), transparent 68%); /* --accent-deep @85% */
  animation: drift-a 26s var(--ease) infinite alternate;
}
.ambient__blob--2 {
  width: 38vw; height: 38vw;
  min-width: 320px; min-height: 320px;
  top: 6vw; right: -10vw;
  background: radial-gradient(circle, rgba(76, 141, 255, .34), transparent 70%);
  animation: drift-b 32s var(--ease) infinite alternate;
}
.ambient__blob--3 {
  width: 40vw; height: 40vw;
  min-width: 300px; min-height: 300px;
  bottom: -16vw; left: 28vw;
  background: radial-gradient(circle, rgba(14, 76, 99, .55), transparent 70%);
  animation: drift-c 38s var(--ease) infinite alternate;
}

.ambient__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(148, 170, 214, .045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(148, 170, 214, .045) 1px, transparent 1px);
  background-size: 74px 74px;
  mask-image: radial-gradient(ellipse 120% 70% at 50% 0%, #000 12%, transparent 72%);
  -webkit-mask-image: radial-gradient(ellipse 120% 70% at 50% 0%, #000 12%, transparent 72%);
}

/* Gradyan bantlaşmasını kıran ince gren */
.ambient__grain {
  position: absolute;
  inset: -50%;
  opacity: .028;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23n)'/%3E%3C/svg%3E");
}

@keyframes drift-a {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to   { transform: translate3d(6vw, 4vw, 0) scale(1.12); }
}
@keyframes drift-b {
  from { transform: translate3d(0, 0, 0) scale(1.06); }
  to   { transform: translate3d(-5vw, 6vw, 0) scale(.94); }
}
@keyframes drift-c {
  from { transform: translate3d(0, 0, 0) scale(.96); }
  to   { transform: translate3d(4vw, -5vw, 0) scale(1.1); }
}

/* --------------------------------------------------------------------------
   4. Yerleşim
   -------------------------------------------------------------------------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--shell-pad);
}
.shell--narrow { max-width: 860px; }

main { position: relative; z-index: 1; }

.section {
  position: relative;
  padding-block: var(--section-y);
}
.section--tight { padding-block: clamp(3rem, 5.5vw, 4.75rem); }

/* Yükseltilmiş bölüm: uzun karanlık sayfada nefes bandı */
.section--alt {
  background: linear-gradient(180deg, transparent, var(--surface-1) 8%, var(--surface-1) 92%, transparent);
}
.section--alt::before,
.section--alt::after {
  content: '';
  position: absolute;
  inset-inline: 0;
  height: 1px;
  background: var(--grad-line);
}
.section--alt::before { top: 0; }
.section--alt::after  { bottom: 0; }

/* --------------------------------------------------------------------------
   5. Tipografi yardımcıları
   -------------------------------------------------------------------------- */
.text-grad {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-family: var(--font-mono);
  font-size: .75rem;
  font-weight: 500;
  letter-spacing: .14em;
  color: var(--ink-faint);
  margin-bottom: 1rem;
}
.eyebrow__dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--glow-soft);
  animation: pulse 2.6s var(--ease) infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px var(--glow-soft); }
  50%      { box-shadow: 0 0 0 7px rgba(76, 141, 255, .04); }
}

.lead {
  font-size: var(--step-1);
  line-height: 1.58;
  color: var(--ink-title);
  letter-spacing: -.008em;
}

.prose { max-width: 68ch; }
.prose > * + * { margin-top: 1.15em; }
.prose p { color: var(--ink-body); }

.section-head { margin-bottom: clamp(2.25rem, 4.5vw, 3.5rem); }
.section-head--center { text-align: center; margin-inline: auto; max-width: 780px; }
.section-head--center .eyebrow { justify-content: center; }
.section-head--left { max-width: 780px; }
.section-head__title { font-size: var(--step-4); }
.section-head__text {
  margin-top: 1.1rem;
  color: var(--ink-muted);
  font-size: var(--step-1);
  line-height: 1.6;
}
.section-head--center .section-head__text { margin-inline: auto; max-width: 62ch; }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-weight: 500;
  color: var(--accent-text);
}
.link-arrow svg { transition: transform var(--dur) var(--ease); }
.link-arrow:hover svg { transform: translateX(4px); }

.checklist { display: grid; gap: .85rem; margin-top: 1.75rem; }
.checklist li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .8rem;
  align-items: start;
  color: var(--ink-muted);
  line-height: 1.6;
}
.checklist svg {
  color: var(--accent);
  margin-top: .35rem;
  padding: 3px;
  background: var(--glow-soft);
  border-radius: 50%;
  box-sizing: content-box;
}

.center-cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .9rem;
  margin-top: clamp(2.5rem, 5vw, 3.5rem);
}

/* --------------------------------------------------------------------------
   6. Butonlar, çipler
   -------------------------------------------------------------------------- */
.btn {
  --btn-py: .78rem;
  --btn-px: 1.35rem;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .6rem;
  padding: var(--btn-py) var(--btn-px);
  border-radius: 99px;
  font-family: var(--font-body);
  font-size: .9375rem;
  font-weight: 600;
  letter-spacing: -.002em;
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
  isolation: isolate;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
              background-color var(--dur) var(--ease), border-color var(--dur) var(--ease),
              color var(--dur) var(--ease);
}
.btn svg { transition: transform var(--dur) var(--ease); }
.btn:hover svg { transform: translateX(3px); }
.btn:active { transform: translateY(1px); }

.btn--sm { --btn-py: .58rem; --btn-px: 1.05rem; font-size: .875rem; }
.btn--lg { --btn-py: .95rem; --btn-px: 1.7rem; font-size: 1rem; }
.btn--block { width: 100%; }

.btn--primary {
  background: var(--grad-btn);
  color: var(--accent-ink);
  box-shadow: 0 1px 0 rgba(255, 255, 255, .18) inset,
              0 10px 26px -12px rgba(76, 141, 255, .7);
}
.btn--primary::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  background: var(--grad-brand);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}
.btn--primary:hover {
  color: var(--accent-ink);
  transform: translateY(-2px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, .22) inset,
              0 16px 36px -14px rgba(76, 141, 255, .85);
}
.btn--primary:hover::after { opacity: 1; }

.btn--ghost {
  background: rgba(30, 37, 49, .5);
  border: 1px solid var(--hairline-strong);
  color: var(--ink-title);
  backdrop-filter: blur(8px);
}
.btn--ghost:hover {
  background: var(--surface-3);
  border-color: var(--accent);
  color: var(--ink-title);
  box-shadow: 0 0 0 1px var(--glow-soft), 0 10px 26px -16px rgba(0, 0, 0, .8);
  transform: translateY(-2px);
}

.btn.is-busy { pointer-events: none; opacity: .72; }
.btn.is-busy::before {
  content: '';
  width: 15px; height: 15px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(1turn); } }

.chip {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .42rem .85rem;
  border-radius: 99px;
  background: var(--surface-3);
  border: 1px solid var(--hairline);
  color: var(--ink-muted);
  font-size: .8125rem;
  font-weight: 500;
  letter-spacing: .002em;
  white-space: nowrap;
}
.chip--accent {
  background: rgba(76, 141, 255, .1);
  border-color: rgba(76, 141, 255, .32);
  color: var(--accent-text);
}
.chip svg { color: var(--accent); }

/* --------------------------------------------------------------------------
   7. Kart iskeleti + imleç takipli parlama
   -------------------------------------------------------------------------- */
.card-base {
  position: relative;
  background: var(--surface-2);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

/* Parlama katmanı: --mx/--my JS tarafından yazılır */
.spot-glow {
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-slow) var(--ease);
  background: radial-gradient(320px circle at var(--mx, 50%) var(--my, 0%),
              var(--glow), transparent 62%);
}

/* --------------------------------------------------------------------------
   8. Üst çubuk
   -------------------------------------------------------------------------- */
.topbar {
  position: relative;
  z-index: 60;
  background: var(--bg-void);
  border-bottom: 1px solid var(--hairline);
  font-size: .8125rem;
}
.topbar__inner {
  display: flex;
  align-items: center;
  gap: 1.35rem;
  min-height: 42px;
  flex-wrap: wrap;
}
.topbar__item {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  color: var(--ink-muted);
  transition: color var(--dur) var(--ease);
}
.topbar__item svg { color: var(--accent); opacity: .85; }
.topbar__item:hover { color: var(--ink-title); }
.topbar__item--muted { cursor: default; }
.topbar__spacer { flex: 1 1 auto; }

.topbar__status {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .08em;
}
.topbar__status .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 3px rgba(76, 217, 160, .14); /* --success @14% */
  animation: pulse 2.6s var(--ease) infinite;
}

.topbar__social { display: flex; gap: .25rem; }
.topbar__social a {
  display: grid;
  place-items: center;
  width: 30px; height: 30px;
  border-radius: 8px;
  color: var(--ink-muted);
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.topbar__social a:hover { color: var(--accent-text); background: var(--surface-2); }

/* --------------------------------------------------------------------------
   9. Başlık + gezinme
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 70;
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease), backdrop-filter var(--dur) var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.is-stuck {
  background: var(--glass);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border-bottom-color: var(--hairline);
  box-shadow: var(--shadow-2);
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  min-height: var(--header-h);
}
.site-header__brand { flex: none; }
.site-header__actions {
  display: flex;
  align-items: center;
  gap: .6rem;
  margin-left: auto;
}

/* Marka */
.brand {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
}
.brand__mark { flex: none; transition: transform var(--dur-slow) var(--ease-out); }
.site-header__brand:hover .brand__mark { transform: rotate(-6deg) scale(1.04); }
.brand__word {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--ink-title);
  line-height: 1;
}
.brand__word-accent {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

/* Ana menü */
.nav { display: none; }
.nav__list { display: flex; align-items: center; gap: .25rem; }
.nav__item { position: relative; }
.nav__link {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .62rem .9rem;
  border-radius: 99px;
  font-size: .9375rem;
  font-weight: 500;
  color: var(--ink-muted);
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.nav__link:hover { color: var(--ink-title); background: rgba(30, 37, 49, .6); }
.nav__link.is-active { color: var(--ink-title); }
.nav__link.is-active::after {
  content: '';
  position: absolute;
  left: 50%; bottom: 2px;
  translate: -50% 0;
  width: 18px; height: 2px;
  border-radius: 2px;
  background: var(--grad-brand);
}
.nav__caret { transition: transform var(--dur) var(--ease); opacity: .7; }
.nav__item--has-menu.is-open .nav__caret { transform: rotate(180deg); }

/* Mega menü */
.megamenu {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  translate: -50% 0;
  width: min(78vw, 880px);
  padding: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur);
}
.nav__item--has-menu.is-open .megamenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.megamenu::before {
  content: '';
  position: absolute;
  inset: -14px 0 auto;
  height: 14px;
}
.megamenu__inner {
  display: grid;
  grid-template-columns: 268px 1fr;
  gap: 1.75rem;
  padding: 1.6rem;
  background: var(--glass);
  backdrop-filter: blur(22px) saturate(150%);
  -webkit-backdrop-filter: blur(22px) saturate(150%);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-3);
}
.megamenu__lead h3 {
  font-size: 1.12rem;
  margin-bottom: .55rem;
  line-height: 1.35;
}
.megamenu__lead .eyebrow { margin-bottom: .7rem; }
.megamenu__text {
  font-size: .875rem;
  color: var(--ink-muted);
  line-height: 1.6;
  margin-bottom: 1rem;
}
.megamenu__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .3rem;
  align-content: start;
}
.megamenu__grid a {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .55rem .7rem;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  color: var(--ink-muted);
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.megamenu__grid a:hover { background: var(--surface-3); color: var(--ink-title); }
.megamenu__icon {
  display: grid;
  place-items: center;
  width: 30px; height: 30px;
  flex: none;
  border-radius: 8px;
  background: rgba(76, 141, 255, .1);
  border: 1px solid rgba(76, 141, 255, .18);
  color: var(--accent);
}
.megamenu__label { line-height: 1.3; }

/* Hamburger */
.burger {
  display: grid;
  place-content: center;
  gap: 5px;
  width: 42px; height: 42px;
  border: 1px solid var(--hairline-strong);
  border-radius: 12px;
  background: rgba(30, 37, 49, .5);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.burger:hover { border-color: var(--accent); }
.burger span {
  display: block;
  width: 18px; height: 1.8px;
  border-radius: 2px;
  background: var(--ink-title);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.burger.is-open span:nth-child(1) { transform: translateY(6.8px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-6.8px) rotate(-45deg); }

/* Mobil menü */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(7, 9, 15, .72);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}
.mobile-nav.is-open { opacity: 1; }
.mobile-nav[hidden] { display: none; }

.mobile-nav__panel {
  position: absolute;
  inset: 0 0 0 auto;
  width: min(410px, 88vw);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  /* --nav-top, menü açılırken JS tarafından başlığın gerçek alt kenarına
     ayarlanır (üst çubuk satır kaydırdığında yükseklik değişebiliyor).
     JS çalışmazsa --header-h yedek olarak devreye girer. */
  padding: calc(var(--nav-top, var(--header-h)) + 1.25rem) 1.5rem 1.75rem;
  background: var(--surface-1);
  border-left: 1px solid var(--hairline-strong);
  box-shadow: var(--shadow-3);
  overflow-y: auto;
  overscroll-behavior: contain;
  transform: translateX(100%);
  transition: transform var(--dur-slow) var(--ease-out);
}
.mobile-nav.is-open .mobile-nav__panel { transform: translateX(0); }

.mobile-nav__list { display: grid; gap: .25rem; }
.mobile-nav__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .95rem .5rem;
  border-bottom: 1px solid var(--hairline);
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--ink-title);
}
.mobile-nav__link svg { color: var(--ink-faint); transition: color var(--dur) var(--ease), transform var(--dur) var(--ease); }
.mobile-nav__link:hover svg,
.mobile-nav__link.is-active svg { color: var(--accent); transform: translate(2px, -2px); }
.mobile-nav__link.is-active { color: var(--accent-text); }

.mobile-nav__services summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .85rem .5rem;
  border-bottom: 1px solid var(--hairline);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink-muted);
  cursor: pointer;
  list-style: none;
}
.mobile-nav__services summary::-webkit-details-marker { display: none; }
.mobile-nav__services summary svg { transition: transform var(--dur) var(--ease); }
.mobile-nav__services[open] summary svg { transform: rotate(180deg); }
.mobile-nav__services ul { display: grid; gap: .1rem; padding: .6rem 0; }
.mobile-nav__services a {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .58rem .55rem;
  border-radius: var(--radius-sm);
  font-size: .9375rem;
  color: var(--ink-muted);
}
.mobile-nav__services a:hover { background: var(--surface-2); color: var(--ink-title); }
.mobile-nav__services a svg { color: var(--accent); opacity: .8; }

.mobile-nav__foot { margin-top: auto; display: grid; gap: 1rem; }
.mobile-nav__contact { display: grid; gap: .5rem; }
.mobile-nav__contact a {
  display: flex;
  align-items: center;
  gap: .55rem;
  font-size: .9375rem;
  color: var(--ink-muted);
}
.mobile-nav__contact svg { color: var(--accent); }

/* --------------------------------------------------------------------------
   10. Kayan öğeler
   -------------------------------------------------------------------------- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  z-index: 120;
  width: 100%; height: 2px;
  pointer-events: none;
}
.scroll-progress > span {
  display: block;
  height: 100%;
  background: var(--grad-brand);
  transform-origin: 0 50%;
  transform: scaleX(0);
}

.wa-float {
  position: fixed;
  right: clamp(1rem, 3vw, 1.75rem);
  bottom: clamp(1rem, 3vw, 1.75rem);
  z-index: 80;
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  padding: .78rem;
  border-radius: 99px;
  background: linear-gradient(135deg, #1FA855, #128C7E);
  color: #F2FBF6;
  font-size: .9375rem;
  font-weight: 600;
  box-shadow: 0 12px 30px -10px rgba(18, 140, 126, .7), 0 0 0 1px rgba(255, 255, 255, .1) inset;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), padding var(--dur) var(--ease);
}
.wa-float:hover {
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 18px 40px -12px rgba(18, 140, 126, .85), 0 0 0 1px rgba(255, 255, 255, .16) inset;
}
.wa-float__label {
  max-width: 0;
  overflow: hidden;
  white-space: nowrap;
  opacity: 0;
  transition: max-width var(--dur-slow) var(--ease-out), opacity var(--dur) var(--ease);
}
.wa-float:hover .wa-float__label,
.wa-float:focus-visible .wa-float__label { max-width: 160px; opacity: 1; padding-right: .35rem; }

.to-top {
  position: fixed;
  right: clamp(1rem, 3vw, 1.75rem);
  bottom: calc(clamp(1rem, 3vw, 1.75rem) + 68px);
  z-index: 79;
  display: grid;
  place-items: center;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--hairline-strong);
  color: var(--ink-muted);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease),
              visibility var(--dur), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.to-top svg { transform: rotate(180deg); }
.to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { border-color: var(--accent); color: var(--accent-text); }

/* --------------------------------------------------------------------------
   11. Alt bilgi
   -------------------------------------------------------------------------- */
.site-footer {
  position: relative;
  z-index: 1;
  margin-top: clamp(3rem, 6vw, 5rem);
  padding-top: clamp(3rem, 6vw, 4.5rem);
  background: linear-gradient(180deg, var(--bg-base), var(--bg-void) 40%);
  border-top: 1px solid var(--hairline);
  overflow: hidden;
}
.site-footer__glow {
  position: absolute;
  top: -260px; left: 50%;
  translate: -50% 0;
  width: min(900px, 110vw); height: 460px;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(76, 141, 255, .22), transparent 66%);
  filter: blur(50px);
  pointer-events: none;
}

.site-footer__cta {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  align-items: center;
  padding: clamp(1.75rem, 4vw, 3rem);
  margin-bottom: clamp(3rem, 6vw, 4.5rem);
  background:
    radial-gradient(700px circle at 12% 0%, rgba(76, 141, 255, .14), transparent 62%),
    var(--surface-2);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-3);
}
.site-footer__cta-title { font-size: var(--step-4); line-height: 1.12; }
.site-footer__cta-text {
  margin-top: 1rem;
  color: var(--ink-muted);
  max-width: 52ch;
}
.site-footer__cta-actions { display: flex; flex-wrap: wrap; gap: .8rem; }

.site-footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 4vw, 3rem);
  padding-bottom: clamp(2.5rem, 5vw, 3.5rem);
}
.site-footer__col--brand { max-width: 340px; }
.site-footer__about {
  margin-top: 1.1rem;
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--ink-muted);
}
.site-footer__social { display: flex; gap: .5rem; margin-top: 1.35rem; }
.site-footer__social a {
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  border-radius: 12px;
  background: var(--surface-2);
  border: 1px solid var(--hairline);
  color: var(--ink-muted);
  transition: all var(--dur) var(--ease);
}
.site-footer__social a:hover {
  color: var(--accent-text);
  border-color: var(--accent);
  background: var(--surface-3);
  transform: translateY(-2px);
}

.site-footer__title {
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .14em;
  color: var(--ink-faint);
  margin-bottom: 1.15rem;
}
.site-footer__links { display: grid; gap: .6rem; align-content: start; }
.site-footer__links a {
  font-size: .9375rem;
  color: var(--ink-muted);
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}
.site-footer__links a:hover { color: var(--accent-text); padding-left: 4px; }
.site-footer__cols2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem; }

.site-footer__contact { display: grid; gap: .95rem; }
.site-footer__contact li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .7rem;
  font-size: .9375rem;
  line-height: 1.6;
  color: var(--ink-muted);
}
.site-footer__contact svg { color: var(--accent); margin-top: .25rem; }
.site-footer__contact a { color: var(--ink-muted); }
.site-footer__contact a:hover { color: var(--accent-text); }

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: .75rem;
  padding-block: 1.5rem;
  border-top: 1px solid var(--hairline);
  font-size: .8125rem;
  color: var(--ink-faint);
}
.site-footer__made { font-family: var(--font-mono); font-size: .75rem; letter-spacing: .02em; }

/* --------------------------------------------------------------------------
   12. Görünüme girme animasyonu
   -------------------------------------------------------------------------- */
/* Yalnızca JS çalışıyorken gizlenir (<html class="js">).
   JS devre dışıysa veya bir hata verirse içerik baştan görünür kalır. */
.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .7s var(--ease-out) var(--d, 0ms),
              transform .7s var(--ease-out) var(--d, 0ms);
}
.js .reveal.is-in { opacity: 1; transform: none; }

/* Kinetik başlıkta da aynı güvenlik: sarma yalnızca .js altında maskeler */
.js .kin > i { transform: translate3d(0, 108%, 0); }
.kin > i { transform: none; }

/* Ekran okuyucuya açık, görsel olarak gizli metin */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   13. Duyarlı kırılımlar
   -------------------------------------------------------------------------- */
@media (min-width: 720px) {
  .site-footer__cta { grid-template-columns: 1.35fr auto; }
  .site-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1025px) {
  .nav { display: block; }
  .burger { display: none; }
  .site-footer__grid { grid-template-columns: 1.4fr .8fr 1.6fr 1.1fr; }
}

@media (max-width: 1024px) {
  .megamenu { display: none; }
}

@media (max-width: 860px) {
  .topbar__item--hide-sm,
  .topbar__status { display: none; }
  .site-header__wa { display: none; }
}

@media (max-width: 560px) {
  .topbar__inner { justify-content: center; row-gap: .35rem; }
  .topbar__spacer { display: none; }
  .brand__word { font-size: 1.15rem; }
  .site-footer__cols2 { grid-template-columns: 1fr; }
  .wa-float__label { display: none; }
}

/* Başlık CTA'sı: geniş ekranda uzun, dar ekranda kısa etiket */
.site-header__cta-short { display: none; }

@media (max-width: 420px) {
  .site-header__inner { gap: .65rem; }
  .site-header__actions { gap: .4rem; }
  .site-header__cta { --btn-px: .85rem; font-size: .8125rem; }
  .site-header__cta-long { display: none; }
  .site-header__cta-short { display: inline; }
  .site-header__cta svg { display: none; }
  .brand__word { font-size: 1.05rem; }
  .brand { gap: .5rem; }
  .brand__mark { width: 32px; height: 32px; }
}

@media (max-width: 340px) {
  .site-header__cta { display: none; }
}

/* --------------------------------------------------------------------------
   14. Hareket tercihi ve baskı
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
  .ambient__blob { animation: none; }
}

@media print {
  /* Jetonların tamamı aydınlık karşılıklarına çevrilir; aksi hâlde
     koyu tema renkleri beyaz kâğıt üzerinde okunmaz çıktı verir. */
  :root {
    --bg-void: #FFFFFF;
    --bg-base: #FFFFFF;
    --surface-1: #FFFFFF;
    --surface-2: #FFFFFF;
    --surface-3: #F4F6FA;
    --hairline: #C9D1DE;
    --hairline-strong: #A9B4C5;
    --hairline-active: #8E9BB0;
    --ink-title: #10141C;
    --ink-body: #222A38;
    --ink-muted: #3C465A;
    --ink-faint: #5A6478;
    --accent: #1F3A6E;
    --accent-text: #17427F;
    --accent-ink: #FFFFFF;
    --accent-wash: #EEF3FC;
    --glow: transparent;
    --glow-soft: transparent;
    --glass: #FFFFFF;
    --shadow-2: none;
    --shadow-3: none;
  }

  .topbar, .site-header, .mobile-nav, .ambient, .wa-float, .to-top,
  .scroll-progress, .marquee, .site-footer__cta, .svc-filter,
  .quotes__controls, .site-footer__watermark, .hero__visual { display: none !important; }

  body { background: #fff; color: var(--ink-body); }
  h1, h2, h3, h4 { color: var(--ink-title); }

  /* Gradyanla kırpılmış metinler baskıda BOŞ çıkar — dolgu rengi geri verilir. */
  .text-grad,
  .brand__word-accent,
  .hero__trust strong,
  .stats__value,
  .experience__big {
    background: none !important;
    -webkit-text-fill-color: var(--ink-title) !important;
    color: var(--ink-title) !important;
  }

  /* Outline tipografi baskıda görünmez — gizlenir. */
  .notfound__code, .pillar__no { -webkit-text-stroke: 0; color: var(--ink-faint); }

  a { color: var(--accent-text); text-decoration: underline; }
  /* Bağlantı hedefleri kâğıtta kaybolmasın */
  .prose a[href^="http"]::after,
  .prose a[href^="mailto"]::after { content: " (" attr(href) ")"; font-size: .85em; word-break: break-all; }

  .section, .section--alt { padding-block: 1.2rem; background: none; }
  .section--alt::before, .section--alt::after { content: none; }
  .svc-card, .pillar, .value-card, .contact-card, .feature,
  .process__item, .quote-card, .faq__item, .timeline__item, .factcard {
    border: 1px solid var(--hairline);
    box-shadow: none;
    break-inside: avoid;
  }
  .faq__item[open] .faq__a, .faq__a { display: block !important; }
  .faq__item { display: block !important; }
  .quotes__track { display: block; overflow: visible; }
  .quote-card { flex: none; width: 100%; margin-bottom: .8rem; }
  h1, h2, h3 { break-after: avoid; }
}