/* ==========================================================================
   Ets Teknoloji — Tasarım Sistemi
   Saf CSS, build yok. :root token'larından tema yönetimi.
   Bölümler: 01 Tokens · 02 Reset · 03 Layout · 04 Header · 05 Buttons
             06 Hero · 07 Section · 08 Cards · 09 Products · 10 Tracks
             11 Process · 12 Why/Logos · 13 FAQ · 14 Contact · 15 Footer
             16 Floating · 17 Motion · 18 Responsive · 19 Print

   Still tercihleri (.stylelintrc.json'da bu kurallar kapatıldı):
     · rgba() kullanılır — tüm tarayıcılarda çalışır, alpha okunabilirliği yüksek.
     · -webkit- önekleri korunur — backdrop-filter ve mask-image Safari için gerekli.
     · Tek satırlık kısa bloklar bilinçlidir (örn. content: ""; top: 0;).
     · max-width medya sorguları kullanılır — elle düzenlemede daha okunaklı.
   ========================================================================== */

/* ==========================================================================
   01 Tokens
   ========================================================================== */
:root {
  /* Renk — zemin */
  --bg: #07090f;
  --bg-alt: #0a0e18;
  --surface: #0e1320;
  --surface-2: #131a2a;
  --surface-3: #1a2336;

  /* Renk — çizgi */
  --line: rgba(255, 255, 255, .08);
  --line-strong: rgba(255, 255, 255, .16);

  /* Renk — metin */
  --text: #e8edf7;
  --muted: #96a2b8;
  --muted-2: #6b7890;

  /* Renk — marka */
  --accent: #22d3ee;
  --accent-2: #8b5cf6;
  --accent-ink: #04202a;
  --accent-soft: rgba(34, 211, 238, .12);
  --accent-2-soft: rgba(139, 92, 246, .12);

  /* Renk — marka kırmızısı (broşürdeki logodan) */
  --brand-red: #f5333f;

  /* Renk — durum */
  --ok: #34d399;
  --warn: #fbbf24;
  --err: #fb7185;

  /* Radyus */
  --radius-sm: 10px;
  --radius: 14px;
  --radius-lg: 22px;

  /* Ölçü */
  --container: 1200px;
  --gutter: clamp(18px, 4vw, 32px);
  --section-y: clamp(64px, 9vw, 128px);
  --gap: clamp(16px, 2.2vw, 26px);
  --header-h: 72px;

  /* Gölge */
  --shadow-sm: 0 4px 16px -8px rgba(0, 0, 0, .8);
  --shadow: 0 20px 60px -22px rgba(0, 0, 0, .85);
  --glow: 0 0 0 1px rgba(34, 211, 238, .22), 0 12px 40px -16px rgba(34, 211, 238, .35);

  /* Tipografi */
  --font: system-ui, -apple-system, "Segoe UI", "Roboto", "Helvetica Neue", "Arial", "Noto Sans", sans-serif;
  --mono: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", "Liberation Mono", monospace;
  --fs-xs: .8125rem;
  --fs-sm: .9375rem;
  --fs-base: 1.0625rem;
  --fs-lg: clamp(1.1rem, .4vw + 1rem, 1.25rem);
  --fs-h3: clamp(1.15rem, .5vw + 1rem, 1.4rem);
  --fs-h2: clamp(1.6rem, 1.6vw + 1.1rem, 2.5rem);
  --fs-h1: clamp(2rem, 2.4vw + 1.05rem, 3.35rem);

  /* Hareket */
  --dur: .22s;
  --dur-slow: .45s;
  --ease: cubic-bezier(.4, 0, .2, 1);
}

/* ==========================================================================
   02 Reset & base
   ========================================================================== */
*,
*::before,
*::after { box-sizing: border-box; }

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  font-family: var(--font);
  font-size: var(--fs-base);
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizelegibility;
  overflow-x: hidden;
}

img,
svg,
video { display: block; max-width: 100%; }

/* HTML genişlik/yükseklik öznitelikleri yalnızca yerleşim ipucu verir;
   aksi halde daraltılan görseller yüksekliklerini koruyup taşar. */
img { height: auto; }

svg { flex: none; }

h1,
h2,
h3,
h4 {
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -.02em;
  text-wrap: balance;
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); letter-spacing: -.01em; }

p { text-wrap: pretty; }

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

a:hover { color: #67e8f9; }

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

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

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

::selection {
  color: var(--accent-ink);
  background: var(--accent);
}

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--gutter);
  z-index: 200;
  padding: 12px 20px;
  color: var(--accent-ink);
  background: var(--accent);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  font-weight: 600;
}

.skip-link:focus { top: 0; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* ==========================================================================
   03 Layout
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: var(--section-y);
  scroll-margin-top: var(--header-h);
}

/* Yasal / uzun metin sayfaları (kvkk.html, gizlilik.html) */
.prose { max-width: 820px; }

.prose > .eyebrow + h1 { margin-top: 20px; }

.prose > .card { margin-top: 14px; }

.prose > .card:first-of-type { margin-top: 32px; }

.prose > .form__note { margin-top: 28px; }

.section--alt { background: var(--bg-alt); }

.section--edge {
  border-top: 1px solid var(--line);
}

.section--edge-top {
  border-top: 1px solid var(--line);
}

.grid {
  display: grid;
  gap: var(--gap);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.text-gradient {
  color: transparent;
  background: linear-gradient(100deg, #67e8f9 0%, #a78bfa 55%, #67e8f9 100%);
  background-clip: text;
  -webkit-background-clip: text;
}

.icon {
  width: 1em;
  height: 1em;
  stroke: currentcolor;
  fill: none;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon--lg { font-size: 28px; }

.icon--fill { fill: currentcolor; stroke: none; }

/* Yardımcı boşluk/hiza araçları */
.mt-2 { margin-top: 14px; }
.mt-3 { margin-top: 20px; }
.mt-4 { margin-top: 28px; }

.align-center { align-items: center; }
.gap-sm { gap: 14px; }

/* SVG ikon sprite (sayfa başında, görsel değil) */
.sprite { position: absolute; width: 0; height: 0; }

/* ==========================================================================
   04 Header & navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 9, 15, .72);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.site-header.is-scrolled {
  background: rgba(7, 9, 15, .93);
  border-bottom-color: var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: var(--header-h);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -.02em;
  color: var(--text);
  white-space: nowrap;
}

.brand:hover { color: var(--text); }

/* Marka: yay + "ETS" raster işaret, "Teknoloji" ise gerçek metin olarak yanında.
   Böylece alt yazı her ekran boyutunda net okunur ve HTML metni olarak
   erişilebilir kalır. Kaynak görsel 214×133 px; 40 px yükseklikte retina
   ekranlarda bile bulanıklaşmıyor. */
.brand img,
.footer-brand img {
  width: auto;
  height: 40px;
  object-fit: contain;
}

.brand__word {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: .03em;
  line-height: 1;
  color: var(--brand-red);
  white-space: nowrap;
}

.footer-brand .brand__word { font-size: 1.05rem; }

.nav {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-inline-start: auto;
}

.nav__link {
  padding: 8px 11px;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--muted);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.nav__link:hover {
  color: var(--text);
  background: var(--surface-2);
}

.nav__link.is-active {
  color: var(--text);
  background: var(--accent-soft);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-switch {
  display: flex;
  gap: 2px;
  padding: 3px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.lang-switch__btn {
  padding: 5px 11px;
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--muted-2);
  background: none;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.lang-switch__btn:hover { color: var(--text); }

.lang-switch__btn[aria-current="true"] {
  color: var(--accent-ink);
  background: var(--accent);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  cursor: pointer;
  place-items: center;
}

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 12px;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after,
.nav-toggle__bars span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentcolor;
  border-radius: 2px;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.nav-toggle__bars::before { content: ""; top: 0; }
.nav-toggle__bars span { top: 5px; }
.nav-toggle__bars::after { content: ""; top: 10px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-5px) rotate(-45deg); }

/* ==========================================================================
   05 Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 12px 22px;
  font-size: var(--fs-sm);
  font-weight: 600;
  line-height: 1.2;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease),
              border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.btn:hover {
  color: var(--text);
  background: var(--surface-3);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.btn:active { transform: translateY(0); }

.btn--primary {
  color: var(--accent-ink);
  background: linear-gradient(120deg, #22d3ee, #38bdf8);
  border-color: transparent;
  box-shadow: 0 10px 30px -12px rgba(34, 211, 238, .7);
}

.btn--primary:hover {
  color: var(--accent-ink);
  background: linear-gradient(120deg, #67e8f9, #22d3ee);
  box-shadow: 0 14px 36px -12px rgba(34, 211, 238, .85);
}

.btn--ghost {
  background: transparent;
}

.btn--block { width: 100%; }

.btn--lg { padding: 15px 28px; font-size: var(--fs-base); }

/* ==========================================================================
   06 Hero
   ========================================================================== */
.hero {
  position: relative;
  padding-block: clamp(56px, 8vw, 110px) clamp(56px, 8vw, 100px);
  overflow: hidden;
  scroll-margin-top: var(--header-h);
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    radial-gradient(58% 46% at 78% 8%, rgba(139, 92, 246, .22), transparent 62%),
    radial-gradient(52% 44% at 8% 22%, rgba(34, 211, 238, .20), transparent 60%),
    linear-gradient(to right, rgba(255, 255, 255, .05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 68px 68px, 68px 68px;
  mask-image: radial-gradient(78% 62% at 50% 22%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(78% 62% at 50% 22%, #000 40%, transparent 100%);
}

.hero__inner {
  display: grid;
  gap: clamp(34px, 5vw, 60px);
  align-items: center;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 15px 7px 11px;
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(34, 211, 238, .28);
  border-radius: 999px;
}

.eyebrow .icon { font-size: 15px; }

.hero__title { margin-block: 22px 0; }

.hero__lead {
  max-width: 56ch;
  margin-top: 20px;
  font-size: var(--fs-lg);
  color: var(--muted);
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
  margin-top: clamp(36px, 5vw, 56px);
  padding-top: clamp(28px, 4vw, 40px);
  border-top: 1px solid var(--line);
}

/* DOM sırası dt → dd (geçerlilik), görsel sıra değer → etiket */
.hero__stats > div {
  display: grid;
  gap: 8px;
}

.hero__stats dt { order: 2; }
.hero__stats dd { order: 1; margin: 0; }

.stat__value {
  font-size: clamp(1.7rem, 2.4vw, 2.4rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--text);
}

.stat__label {
  margin-top: 8px;
  font-size: var(--fs-sm);
  color: var(--muted);
}

/* Hero görsel yerine: soyut terminal kartı (saf CSS + SVG) */
.hero__visual {
  position: relative;
  display: grid;
  gap: var(--gap);
  grid-template-columns: repeat(2, 1fr);
}

.device-card {
  padding: 22px;
  background: linear-gradient(160deg, rgba(255, 255, 255, .07), rgba(255, 255, 255, .02));
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.device-card__icon {
  display: grid;
  width: 46px;
  height: 46px;
  font-size: 24px;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(34, 211, 238, .26);
  border-radius: var(--radius-sm);
  place-items: center;
}

.device-card:nth-child(2) .device-card__icon {
  color: #c4b5fd;
  background: var(--accent-2-soft);
  border-color: rgba(139, 92, 246, .3);
}

.device-card__title {
  margin-top: 16px;
  font-size: var(--fs-sm);
  font-weight: 600;
}

.device-card__text {
  margin-top: 6px;
  font-size: var(--fs-sm);
  color: var(--muted);
}

.device-card--span { grid-column: 1 / -1; }

/* ==========================================================================
   07 Section başlıkları
   ========================================================================== */
.section-head {
  max-width: 68ch;
  margin-bottom: clamp(32px, 4vw, 52px);
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

.section-head__lead {
  margin-top: 16px;
  font-size: var(--fs-lg);
  color: var(--muted);
}

.section-head > .eyebrow + h2 { margin-top: 20px; }

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.section-head--center .section-head__lead { margin-inline: auto; }

/* ==========================================================================
   08 Kartlar
   ========================================================================== */
.card {
  display: flex;
  flex-direction: column;
  padding: clamp(22px, 2.4vw, 30px);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  transition: transform var(--dur-slow) var(--ease), border-color var(--dur-slow) var(--ease),
              background var(--dur-slow) var(--ease);
}

.card:hover {
  background: var(--surface-2);
  border-color: var(--line-strong);
  transform: translateY(-4px);
}

.card__icon {
  display: grid;
  width: 50px;
  height: 50px;
  font-size: 26px;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(34, 211, 238, .24);
  border-radius: var(--radius);
  place-items: center;
}

.card--violet .card__icon {
  color: #c4b5fd;
  background: var(--accent-2-soft);
  border-color: rgba(139, 92, 246, .3);
}

.card__title { margin-top: 20px; }

.card__text {
  margin-top: 10px;
  color: var(--muted);
}

.card__list {
  display: grid;
  gap: 9px;
  margin-top: 18px;
  font-size: var(--fs-sm);
  color: var(--muted);
}

.card__list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.card__list .icon {
  margin-top: 4px;
  font-size: 16px;
  color: var(--accent);
}

.card__link {
  display: inline-flex;
  gap: 7px;
  align-items: center;
  margin-top: 20px;
  font-size: var(--fs-sm);
  font-weight: 600;
}

.card__link .icon {
  font-size: 17px;
  transition: transform var(--dur) var(--ease);
}

.card__link:hover .icon { transform: translateX(4px); }

/* Yatay kart (başlık + metin, ikon solda) */
.card--row {
  flex-direction: row;
  gap: 16px;
  align-items: flex-start;
}

.card--row .card__icon { margin-top: 0; }

.card--row .card__title { margin-top: 0; }

/* ==========================================================================
   09 Ürünler
   ========================================================================== */
.product {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  transition: border-color var(--dur-slow) var(--ease), transform var(--dur-slow) var(--ease);
}

.product:hover {
  border-color: rgba(34, 211, 238, .4);
  transform: translateY(-4px);
}

/* Ürün fotoğrafı alanı — broşürden çıkarılan şeffaf PNG'ler.
   Yükseklik sabit bir clamp() ile veriliyor; aspect-ratio kullanılsa
   yüzde çözünürlüklü max-height güvenilir biçimde çalışmıyor. */
.product__media {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: clamp(200px, 21vw, 272px);
  padding: 18px;
  overflow: hidden;
  background:
    radial-gradient(70% 70% at 50% 42%, rgba(34, 211, 238, .13), transparent 70%),
    linear-gradient(160deg, rgba(255, 255, 255, .05), rgba(255, 255, 255, .01));
  border-bottom: 1px solid var(--line);
}

.product__media img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 18px 28px rgba(0, 0, 0, .55));
  transition: transform var(--dur-slow) var(--ease);
}

.product:hover .product__media img { transform: scale(1.04); }

.product__badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 1;
}

.product__top {
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 24px;
  background: linear-gradient(135deg, rgba(34, 211, 238, .1), transparent 60%);
  border-bottom: 1px solid var(--line);
}

.product__icon {
  display: grid;
  width: 54px;
  height: 54px;
  font-size: 28px;
  color: var(--accent);
  background: var(--surface-2);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  place-items: center;
}

.product__name { font-size: var(--fs-h3); }

.product__tag {
  margin-top: 3px;
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--accent);
}

.product__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 24px;
}

.product__desc { color: var(--muted); }

.product__specs {
  display: grid;
  gap: 0;
  margin-top: 20px;
  font-size: var(--fs-sm);
  border-top: 1px solid var(--line);
}

.product__specs div {
  display: flex;
  gap: 12px;
  justify-content: space-between;
  padding-block: 10px;
  border-bottom: 1px solid var(--line);
}

.product__specs dt { color: var(--muted); }

.product__specs dd {
  margin: 0;
  font-weight: 600;
  text-align: right;
}

.product__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.badge {
  padding: 5px 11px;
  font-size: var(--fs-xs);
  font-weight: 500;
  color: var(--muted);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.badge--accent {
  color: var(--accent);
  background: var(--accent-soft);
  border-color: rgba(34, 211, 238, .24);
}

/* Uygulama alanları — broşürlerdeki gerçek liste */
.apps {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  max-width: 900px;
  margin-inline: auto;
}

.app {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  padding: 12px 20px;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease),
              background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.app:hover {
  color: var(--accent);
  background: var(--accent-soft);
  border-color: rgba(34, 211, 238, .34);
  transform: translateY(-2px);
}

.app .icon { font-size: 18px; color: var(--accent); }

.apps--center {
  justify-content: center;
  margin-top: clamp(32px, 4vw, 48px);
}

/* ==========================================================================
   10 EFT POS şubeleri (track) + mimari diyagram
   ========================================================================== */

/* Her şube kendi vurgu rengini taşır: --accent (finansal) / --accent-2 (marka) */
.track {
  --track-accent: var(--accent);
  --track-soft: var(--accent-soft);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-top: 3px solid var(--track-accent);
  border-radius: var(--radius-lg);
  transition: transform var(--dur-slow) var(--ease), border-color var(--dur-slow) var(--ease);
}

.track:hover { transform: translateY(-4px); }

.track--closed {
  --track-accent: var(--accent-2);
  --track-soft: var(--accent-2-soft);
}

.track__head {
  display: flex;
  gap: 14px;
  align-items: center;
  padding: 22px 24px;

  /* Başlıklar farklı satır sayısına düşebiliyor; yan yana duran kartlarda
     gövde listelerinin aynı hizada başlaması için taban yükseklik sabitlenir. */
  min-height: 140px;
  background: linear-gradient(135deg, var(--track-soft), transparent 70%);
  border-bottom: 1px solid var(--line);
}

.track__icon {
  display: grid;
  width: 46px;
  height: 46px;
  font-size: 24px;
  color: var(--track-accent);
  background: var(--surface-2);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  place-items: center;
}

.track__title {
  font-size: var(--fs-h3);
  letter-spacing: -.01em;
}

.track__kicker {
  margin-top: 3px;
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--track-accent);
}

.track__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 24px;
}

.track__list {
  display: grid;
  gap: 11px;
  font-size: var(--fs-sm);
  color: var(--muted);
}

.track__list li {
  display: flex;
  gap: 11px;
  align-items: flex-start;
}

.track__list .icon {
  flex: none;
  margin-top: 4px;
  font-size: 16px;
  color: var(--track-accent);
}

.track__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.track__tag {
  padding: 5px 12px;
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--track-accent);
  background: var(--track-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
}

/* İki şube arasındaki ayrım cümlesi */
.track-split {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  max-width: 76ch;
  margin: clamp(26px, 3vw, 38px) auto 0;
  padding: 18px 22px;
  text-align: left;
  font-size: var(--fs-sm);
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
}

.track-split .icon {
  flex: none;
  margin-top: 3px;
  font-size: 20px;
  color: var(--accent);
}

/* Ortak temel şeridi */
.foundation {
  display: grid;
  gap: var(--gap);
  grid-template-columns: repeat(4, 1fr);
  margin-top: clamp(32px, 4vw, 48px);
  padding-top: clamp(28px, 3.5vw, 40px);
  border-top: 1px solid var(--line);
}

.foundation__item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.foundation__icon {
  display: grid;
  width: 40px;
  height: 40px;
  font-size: 20px;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(34, 211, 238, .24);
  border-radius: var(--radius-sm);
  place-items: center;
  flex: none;
}

.foundation__title { font-size: var(--fs-sm); }

.foundation__text {
  margin-top: 5px;
  font-size: var(--fs-sm);
  color: var(--muted);
}

/* Mimari diyagram: ortak çekirdek + iki dal */
.diagram {
  margin-top: clamp(32px, 4vw, 48px);
  padding: clamp(22px, 3vw, 32px);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.diagram svg {
  width: 100%;
  height: auto;
  overflow: visible;
}

.diagram__node {
  fill: var(--surface-2);
  stroke: var(--line-strong);
  stroke-width: 1;
}

.diagram__node--core {
  fill: rgba(34, 211, 238, .1);
  stroke: rgba(34, 211, 238, .42);
}

.diagram__node--emv {
  fill: rgba(34, 211, 238, .07);
  stroke: rgba(34, 211, 238, .38);
}

.diagram__node--closed {
  fill: rgba(139, 92, 246, .07);
  stroke: rgba(139, 92, 246, .4);
}

.diagram__label {
  fill: var(--text);
  font-family: var(--font);
  font-size: 15px;
  font-weight: 600;
}

.diagram__sub {
  fill: var(--muted-2);
  font-family: var(--font);
  font-size: 12px;
  font-weight: 500;
}

.diagram__link {
  fill: none;
  stroke: var(--line-strong);
  stroke-width: 1.5;
}

.diagram__link--emv { stroke: rgba(34, 211, 238, .55); }

.diagram__link--closed { stroke: rgba(139, 92, 246, .55); }

/* ==========================================================================
   11 Süreç adımları
   ========================================================================== */
.steps {
  display: grid;
  gap: var(--gap);
  grid-template-columns: repeat(5, 1fr);
  counter-reset: step;
}

.step {
  position: relative;
  padding: 26px 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.step__num {
  display: grid;
  width: 38px;
  height: 38px;
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--accent-ink);
  background: linear-gradient(120deg, #22d3ee, #8b5cf6);
  border-radius: 50%;
  place-items: center;
}

.step__title { margin-top: 18px; font-size: var(--fs-base); }

.step__text {
  margin-top: 8px;
  font-size: var(--fs-sm);
  color: var(--muted);
}

/* ==========================================================================
   12 Neden biz & referanslar
   ========================================================================== */
.why {
  display: grid;
  gap: 22px;
  grid-template-columns: repeat(2, 1fr);
}

.why__item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.why__icon {
  display: grid;
  width: 42px;
  height: 42px;
  font-size: 22px;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(34, 211, 238, .24);
  border-radius: var(--radius-sm);
  place-items: center;
}

.why__title { font-size: var(--fs-base); }

.why__text {
  margin-top: 6px;
  font-size: var(--fs-sm);
  color: var(--muted);
}

/* ==========================================================================
   13 SSS / Accordion
   ========================================================================== */
.faq {
  max-width: 820px;
  margin-inline: auto;
  display: grid;
  gap: 12px;
}

.faq__item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease);
}

.faq__item:has(.faq__btn[aria-expanded="true"]) {
  border-color: rgba(34, 211, 238, .36);
}

.faq__btn {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 20px 22px;
  font-size: var(--fs-base);
  font-weight: 600;
  text-align: left;
  color: var(--text);
  background: none;
  border: 0;
  cursor: pointer;
}

.faq__btn:hover { color: var(--accent); }

.faq__chevron {
  color: var(--accent);
  transition: transform var(--dur) var(--ease);
}

.faq__btn[aria-expanded="true"] .faq__chevron {
  transform: rotate(180deg);
}

/* Not: [hidden] kullanılmıyor. display:grid, [hidden]'i geçersiz kılardı.
   Kapalıyken visibility:hidden ile hem yükseklik sıfırlanır hem de içerik
   erişilebilirlik ağacından ve odak sırasından çıkar. */
.faq__panel {
  display: grid;
  grid-template-rows: 0fr;
  visibility: hidden;
  transition: grid-template-rows var(--dur-slow) var(--ease),
              visibility 0s linear var(--dur-slow);
}

.faq__item.is-open .faq__panel {
  grid-template-rows: 1fr;
  visibility: visible;
  transition: grid-template-rows var(--dur-slow) var(--ease),
              visibility 0s linear 0s;
}

.faq__panel > div { overflow: hidden; }

.faq__answer {
  padding: 0 22px 22px;
  color: var(--muted);
}

/* ==========================================================================
   14 İletişim & form
   ========================================================================== */
.contact-grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: start;
}

.form {
  padding: clamp(24px, 3vw, 36px);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.form__row {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(2, 1fr);
}

.form__field { display: grid; gap: 8px; }

.form__label {
  font-size: var(--fs-sm);
  font-weight: 600;
}

.form__label span { color: var(--err); }

.form__hint { font-size: var(--fs-xs); color: var(--muted-2); }

.form__control {
  width: 100%;
  padding: 13px 15px;
  color: var(--text);
  background: var(--bg-alt);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.form__control::placeholder { color: var(--muted-2); }

.form__control:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.form__control:focus-visible { outline: none; }

select.form__control {
  appearance: none;
  padding-right: 42px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2396a2b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 18px;
  cursor: pointer;
}

textarea.form__control { min-height: 148px; resize: vertical; }

.form__field--full { grid-column: 1 / -1; }

.form__error {
  font-size: var(--fs-xs);
  color: var(--err);
}

.form__control[aria-invalid="true"] { border-color: var(--err); }

.form__note {
  margin-top: 16px;
  font-size: var(--fs-xs);
  color: var(--muted-2);
}

.form__status {
  margin-top: 18px;
  padding: 14px 16px;
  font-size: var(--fs-sm);
  font-weight: 500;
  border-radius: var(--radius-sm);
}

.form__status:empty { display: none; }

.form__status--ok {
  color: #6ee7b7;
  background: rgba(52, 211, 153, .1);
  border: 1px solid rgba(52, 211, 153, .3);
}

.form__status--err {
  color: #fda4af;
  background: rgba(251, 113, 133, .1);
  border: 1px solid rgba(251, 113, 133, .3);
}

.form .btn { margin-top: 22px; }

.contact-info {
  display: grid;
  gap: 26px;
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-item__icon {
  display: grid;
  width: 44px;
  height: 44px;
  font-size: 22px;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(34, 211, 238, .24);
  border-radius: var(--radius-sm);
  place-items: center;
}

.contact-item__label {
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted-2);
}

.contact-item__value {
  margin-top: 4px;
  font-size: var(--fs-base);
  font-weight: 600;
  color: var(--text);
}

.contact-item__value a { color: var(--text); }

.contact-item__value a:hover { color: var(--accent); }

.contact-item__note {
  margin-top: 4px;
  font-size: var(--fs-sm);
  color: var(--muted);
}

/* ==========================================================================
   15 CTA bandı & footer
   ========================================================================== */
.cta-band {
  position: relative;
  padding: clamp(40px, 6vw, 68px) clamp(24px, 4vw, 56px);
  text-align: center;
  background: linear-gradient(135deg, rgba(34, 211, 238, .12), rgba(139, 92, 246, .12));
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.cta-band__title { font-size: var(--fs-h2); }

.cta-band__text {
  max-width: 60ch;
  margin: 14px auto 0;
  color: var(--muted);
}

.cta-band__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  margin-top: 28px;
}

.site-footer {
  padding-block: clamp(48px, 6vw, 76px) 28px;
  background: var(--bg-alt);
  border-top: 1px solid var(--line);
}

.footer-grid {
  display: grid;
  gap: var(--gap);
  grid-template-columns: minmax(0, 1.6fr) repeat(2, minmax(0, 1fr)) minmax(0, 1.2fr);
}

.footer-col__title {
  margin-bottom: 18px;
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted-2);
}

.footer-brand {
  display: flex;
  gap: 10px;
  align-items: center;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
}

.footer-brand img { height: 32px; width: auto; }

.footer-about {
  max-width: 40ch;
  margin-top: 16px;
  font-size: var(--fs-sm);
  color: var(--muted);
}

.footer-links {
  display: grid;
  gap: 10px;
  font-size: var(--fs-sm);
}

.footer-links a { color: var(--muted); }

.footer-links a:hover { color: var(--text); }

.social {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.social a {
  display: grid;
  width: 40px;
  height: 40px;
  font-size: 20px;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  place-items: center;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease),
              background var(--dur) var(--ease);
}

.social a:hover {
  color: var(--accent);
  background: var(--surface-2);
  border-color: var(--accent);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  align-items: center;
  justify-content: space-between;
  margin-top: clamp(36px, 5vw, 56px);
  padding-top: 24px;
  font-size: var(--fs-sm);
  color: var(--muted-2);
  border-top: 1px solid var(--line);
}

/* Sade sayfalarda (yasal metinler) üst çizgi/boşluk gereksiz */
.footer-bottom--flush {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-legal a { color: var(--muted-2); }

.footer-legal a:hover { color: var(--text); }

/* ==========================================================================
   16 Sabit iletişim butonu
   ========================================================================== */
.float-contact {
  position: fixed;
  right: clamp(14px, 3vw, 24px);
  bottom: clamp(14px, 3vw, 24px);
  z-index: 90;
  display: grid;
  gap: 10px;
}

.float-contact a {
  display: flex;
  gap: 10px;
  align-items: center;
  height: 52px;
  padding-inline: 16px;
  color: #fff;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  box-shadow: var(--shadow);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.float-contact a:hover { transform: translateY(-3px); }

.float-contact .icon { font-size: 22px; }

.float-contact__label {
  font-size: var(--fs-sm);
  font-weight: 600;
}

.float-contact--wa {
  background: linear-gradient(120deg, #128c7e, #25d366);
  border-color: transparent;
}

.float-contact--wa:hover { color: #fff; }

.float-contact--mail {
  background: rgba(14, 19, 32, .95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

/* ==========================================================================
   17 Hareket
   ========================================================================== */
html.js .reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}

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

/* ==========================================================================
   18 Responsive
   ========================================================================== */
@media (max-width: 1080px) {
  .nav-toggle { display: grid; }

  .nav {
    position: absolute;
    top: 100%;
    inset-inline: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    margin: 0;
    padding: 16px var(--gutter) 22px;
    background: rgba(10, 14, 24, .98);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
  }

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

  .nav__link { padding: 13px 14px; font-size: var(--fs-base); }

  .nav-actions .btn--header { display: none; }

  .footer-grid { grid-template-columns: repeat(2, 1fr); }

  .hero__inner { grid-template-columns: 1fr; }

  .hero__visual { max-width: 560px; }

  .steps { grid-template-columns: repeat(2, 1fr); }

  .foundation { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  :root { --header-h: 64px; }

  /* Header küçülünce logo da orantılı küçülmeli */
  .brand img { height: 32px; }

  /* Metin de aynı oranda küçülmeli, yoksa işaretin yanında baskın durur */
  .brand__word { font-size: 1rem; }

  .grid--3,
  .grid--4 { grid-template-columns: repeat(2, 1fr); }

  .contact-grid { grid-template-columns: 1fr; }

  .why { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: 1fr; }

  .form__row { grid-template-columns: 1fr; }

  .steps { grid-template-columns: 1fr; }

  .foundation { grid-template-columns: 1fr; }

  .track__head { padding: 18px 20px; min-height: 0; }

  .track__body { padding: 20px; }

  .track-split { padding: 16px 18px; }

  .hero__stats { grid-template-columns: 1fr; gap: 20px; }

  .footer-grid { grid-template-columns: 1fr; }

  .footer-bottom { justify-content: flex-start; }

  .float-contact__label { display: none; }

  .float-contact a { width: 56px; padding: 0; justify-content: center; }
}

@media (max-width: 420px) {
  .hero__visual { grid-template-columns: 1fr; }

  .device-card--span { grid-column: auto; }
}

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

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  html.js .reveal { opacity: 1; transform: none; }
}

/* ==========================================================================
   19 Print
   ========================================================================== */
@media print {
  .site-header,
  .float-contact,
  .faq__btn,
  .form { display: none; }

  /* Animasyon bekleyen içerik yazdırmada da görünmeli */
  html.js .reveal { opacity: 1; transform: none; }

  .faq__panel { visibility: visible; grid-template-rows: 1fr; }

  body { color: #000; background: #fff; }
}