/* Backline — tek stil dosyası. Sahne karanlığı + uygulamanın renkleri. */
:root {
  --bg: #07080c;
  --bg-2: #0d0f15;
  --panel: #12151d;
  --panel-2: #181c26;
  --line: rgba(255, 255, 255, 0.09);
  --text: #f4f5f8;
  --muted: #a3a9b8;
  --dim: #6e7484;
  --blue: #5c9ef5;
  --pink: #f5738c;
  --orange: #e87c3e;
  --green: #5ccc9e;
  --purple: #9480f2;
  --amber: #f2b84d;
  --radius: 18px;
  --max: 1180px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, sans-serif; letter-spacing: -0.025em; line-height: 1.08; margin: 0; }
h1 { font-size: clamp(44px, 7.4vw, 96px); font-weight: 850; }
h2 { font-size: clamp(32px, 4.6vw, 56px); font-weight: 800; }
h3 { font-size: 22px; font-weight: 750; letter-spacing: -0.01em; line-height: 1.25; }
p { margin: 0; }
.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.eyebrow {
  font: 600 13px/1 ui-monospace, "SF Mono", Menlo, monospace;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--amber);
}
.lead { font-size: clamp(18px, 2vw, 22px); color: var(--muted); line-height: 1.55; }
.muted { color: var(--muted); }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 16px; z-index: 99; background: #fff; color: #000; padding: 8px 12px; border-radius: 8px; }

/* Üst çubuk */
.nav {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: saturate(160%) blur(18px); -webkit-backdrop-filter: saturate(160%) blur(18px);
  background: rgba(7, 8, 12, 0.72);
  border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; letter-spacing: 0.14em; font-size: 15px; }
.brand img { width: 30px; height: 30px; }
.nav-links { display: flex; gap: 22px; margin-left: auto; font-size: 15px; }
.nav-links a { text-decoration: none; color: var(--muted); }
.nav-links a:hover { color: var(--text); }
.lang { font-size: 14px; color: var(--dim); text-decoration: none; border: 1px solid var(--line); border-radius: 99px; padding: 4px 10px; }
.lang:hover { color: var(--text); }

/* Düğmeler */
.btn {
  display: inline-flex; align-items: center; gap: 10px; text-decoration: none;
  font-weight: 650; font-size: 16px; border-radius: 99px; padding: 13px 22px;
  transition: transform 0.15s ease, background 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: #fff; color: #000; }
.btn-ghost { border: 1px solid rgba(255, 255, 255, 0.22); color: var(--text); }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.06); }
.btn-sm { padding: 8px 16px; font-size: 14px; white-space: nowrap; }
.btn svg { width: 18px; height: 18px; }

/* Kahraman */
.hero { position: relative; padding: 96px 0 40px; text-align: center; isolation: isolate; }
.hero::before {
  content: ""; position: absolute; inset: -20% 0 auto; height: 900px; z-index: -1;
  background:
    radial-gradient(600px 420px at 18% 10%, rgba(92, 158, 245, 0.32), transparent 70%),
    radial-gradient(640px 460px at 85% 30%, rgba(232, 124, 62, 0.24), transparent 70%),
    conic-gradient(from 200deg at 30% -10%, transparent 0 40deg, rgba(92, 158, 245, 0.07) 46deg, transparent 54deg),
    conic-gradient(from 140deg at 72% -10%, transparent 0 40deg, rgba(232, 124, 62, 0.07) 46deg, transparent 54deg);
}
.hero .eyebrow { display: inline-block; margin-bottom: 22px; }
.hero h1 { max-width: 14ch; margin: 0 auto; }
.hero .lead { max-width: 720px; margin: 24px auto 0; }
.cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 34px; }
.platforms { margin-top: 18px; font-size: 14px; color: var(--dim); }
.hero-shot { margin: 64px auto 0; max-width: 1100px; }

.frame {
  border-radius: 14px; overflow: hidden; border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 40px 120px rgba(0, 0, 0, 0.7), 0 0 0 1px rgba(0, 0, 0, 0.4);
  background: var(--panel);
}

/* Bölümler */
section { padding: 96px 0; }
.section-head { max-width: 760px; margin-bottom: 48px; }
.section-head h2 { margin-top: 14px; }
.section-head .lead { margin-top: 18px; }
.center { text-align: center; margin-left: auto; margin-right: auto; }

/* Video */
.film { padding-top: 40px; }
.film .player { max-width: 1100px; margin: 0 auto; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); box-shadow: 0 40px 120px rgba(0, 0, 0, 0.6); background: #000; aspect-ratio: 16 / 9; }
.film video { width: 100%; height: 100%; }
.film figcaption { text-align: center; color: var(--dim); font-size: 14px; margin-top: 14px; }

/* Tanım */
.define { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: start; }
.define p + p { margin-top: 16px; }
.who { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.chip { border: 1px solid var(--line); background: var(--panel); border-radius: 99px; padding: 7px 14px; font-size: 14px; color: var(--muted); }
.facts { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.facts-4 { grid-template-columns: repeat(4, 1fr); }
.fact { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.fact b { display: block; font-size: 30px; letter-spacing: -0.02em; }
.fact span { color: var(--muted); font-size: 14px; }

/* Özellikler */
.feature { display: grid; grid-template-columns: 1fr 1.35fr; gap: 56px; align-items: center; padding: 56px 0; border-top: 1px solid var(--line); }
.feature:nth-child(even) { grid-template-columns: 1.35fr 1fr; }
.feature:nth-child(even) .feature-text { order: 2; }
.feature-text h3 { font-size: clamp(26px, 3vw, 36px); letter-spacing: -0.02em; margin: 12px 0 14px; }
.feature-text ul { margin: 18px 0 0; padding: 0; list-style: none; }
.feature-text li { padding: 7px 0 7px 28px; position: relative; color: var(--muted); }
.feature-text li::before { content: ""; position: absolute; left: 4px; top: 16px; width: 8px; height: 8px; border-radius: 50%; background: var(--accent, var(--blue)); }
.tag { font: 600 12px/1 ui-monospace, "SF Mono", Menlo, monospace; letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent, var(--blue)); }

/* Adımlar */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; counter-reset: step; }
.step { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; position: relative; }
.step::before { counter-increment: step; content: "0" counter(step); font: 700 14px/1 ui-monospace, "SF Mono", Menlo, monospace; color: var(--amber); display: block; margin-bottom: 18px; }
.step h3 { margin-bottom: 10px; }
.step p { color: var(--muted); font-size: 15px; }

/* Güvenilirlik */
.reliable { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card { background: linear-gradient(180deg, var(--panel-2), var(--panel)); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.card .ico { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: rgba(255, 255, 255, 0.06); margin-bottom: 18px; color: var(--accent, var(--blue)); }
.card .ico svg { width: 22px; height: 22px; }
.card h3 { margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 15px; }

/* Cihazlar */
.devices { display: grid; grid-template-columns: 0.62fr 1.6fr 0.95fr; gap: 28px; align-items: end; }
.devices figure { margin: 0; }
.devices figcaption { text-align: center; color: var(--muted); font-size: 14px; margin-top: 14px; }
.devices .ipad .frame { border-radius: 22px; border-width: 8px; border-color: #050506; }
.devices .iphone .frame { border-radius: 26px; border-width: 7px; border-color: #050506; }

/* Teknik özellikler */
.specs { width: 100%; border-collapse: collapse; font-size: 16px; }
.specs th, .specs td { text-align: left; padding: 16px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.specs th { width: 32%; color: var(--muted); font-weight: 550; padding-right: 24px; }

/* Gizlilik bandı */
.privacy-band { text-align: center; background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.privacy-band h2 { font-size: clamp(28px, 3.6vw, 44px); }
.privacy-band .lead { max-width: 640px; margin: 16px auto 0; }

/* SSS */
.faq { max-width: 860px; margin: 0 auto; }
.faq details { border-bottom: 1px solid var(--line); padding: 4px 0; }
.faq summary { cursor: pointer; list-style: none; padding: 20px 40px 20px 0; font-size: 19px; font-weight: 650; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 16px; font-size: 26px; font-weight: 300; color: var(--muted); transition: transform 0.2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--muted); padding: 0 0 22px; }

/* Kapanış */
.final { text-align: center; padding: 120px 0; position: relative; isolation: isolate; }
.final::before { content: ""; position: absolute; inset: 0; z-index: -1; background: radial-gradient(600px 360px at 50% 30%, rgba(92, 158, 245, 0.22), transparent 70%); }
.final img { width: 120px; height: 120px; margin: 0 auto 28px; }

/* Alt bilgi */
footer { border-top: 1px solid var(--line); padding: 40px 0 56px; color: var(--dim); font-size: 14px; }
footer .wrap { display: flex; gap: 24px; flex-wrap: wrap; align-items: center; }
footer nav { display: flex; gap: 20px; margin-left: auto; flex-wrap: wrap; }
footer a { text-decoration: none; color: var(--muted); }
footer a:hover { color: var(--text); }

/* Hukuki sayfalar */
.doc { max-width: 780px; margin: 0 auto; padding: 72px 24px 96px; }
.doc h1 { font-size: clamp(38px, 5vw, 56px); margin-bottom: 12px; }
.doc h2 { font-size: 26px; margin: 44px 0 12px; letter-spacing: -0.015em; }
.doc h3 { margin: 28px 0 8px; }
.doc p, .doc li { color: #c9cdd8; }
.doc p + p { margin-top: 14px; }
.doc ul { padding-left: 22px; }
.doc li { margin: 6px 0; }
.doc .updated { color: var(--dim); font-size: 14px; }
.doc .summary { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 24px; margin: 28px 0; }
.doc hr { border: 0; border-top: 1px solid var(--line); margin: 56px 0; }

/* Görünürken yumuşak giriş */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
  .reveal.in { opacity: 1; transform: none; }
}

@media (max-width: 960px) {
  .define, .feature, .feature:nth-child(even) { grid-template-columns: 1fr; gap: 28px; }
  .feature:nth-child(even) .feature-text { order: 0; }
  .steps { grid-template-columns: 1fr 1fr; }
  .reliable { grid-template-columns: 1fr 1fr; }
  .devices { grid-template-columns: 1fr 1fr; }
  .devices .mac { grid-column: 1 / -1; order: -1; }
  .facts-4 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .nav-links { display: none; }
  .nav .lang { margin-left: auto; }
  .hero { padding-top: 64px; }
  section { padding: 72px 0; }
  .steps, .reliable, .facts { grid-template-columns: 1fr; }
  .specs th { width: 40%; }
  footer nav { margin-left: 0; }
}