/* EyeJudge — 2005 projesi için tanıtım sayfası. Sayfa rengi, eski sitenin #02001D tonundan. */
:root {
  --bg: #02001d;
  --bg-2: #0b0a2e;
  --panel: #121141;
  --line: #2a2970;
  --text: #e8e9f7;
  --muted: #a3a5cf;
  --accent: #54b3d6;
  --accent-2: #e0b44c;
  --danger: #d4574c;
  --radius: 14px;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
em { color: var(--accent-2); font-style: normal; }
code, kbd, var { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; }
code { background: var(--panel); padding: .1em .4em; border-radius: 6px; font-size: .9em; }
kbd {
  background: var(--panel); border: 1px solid var(--line); border-bottom-width: 3px;
  padding: .05em .5em; border-radius: 6px; font-size: .9em;
}
var { font-style: normal; color: var(--accent-2); }

/* dil geçişi */
html[data-lang="tr"] .en, html[data-lang="en"] .tr { display: none !important; }

/* üst çubuk */
.top {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 1.5rem;
  padding: .7rem max(16px, 4vw);
  background: rgba(2, 0, 29, .85); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: .6rem; color: var(--text); text-decoration: none; font-weight: 700; letter-spacing: .02em; }
.brand-eye {
  width: 22px; height: 22px; border-radius: 50%;
  background: radial-gradient(circle, #02001d 0 28%, #54b3d6 30% 62%, #1b5d78 64% 100%);
  box-shadow: 0 0 12px rgba(84, 179, 214, .5);
}
.top nav { display: flex; gap: 1.2rem; margin-left: auto; font-size: .92rem; }
.top nav a { color: var(--muted); text-decoration: none; }
.top nav a:hover { color: var(--text); }
.lang { display: flex; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; }
.lang button {
  background: none; border: 0; color: var(--muted); padding: .3rem .8rem;
  font: inherit; font-size: .85rem; cursor: pointer;
}
.lang button[aria-pressed="true"] { background: var(--accent); color: #02001d; font-weight: 700; }

main > section { max-width: 1040px; margin: 0 auto; padding: 4.5rem max(16px, 4vw); }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.2rem); line-height: 1.2; margin: 0 0 1.5rem; }
h3 { margin: 0 0 .5rem; font-size: 1.1rem; }
h3.sub { margin-top: 2.5rem; }
p { margin: 0 0 1rem; }
.fineprint { color: var(--muted); font-size: .88rem; }

/* hero */
.hero {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 2rem; align-items: center;
  min-height: calc(100vh - 60px);
}
.kicker { color: var(--accent); letter-spacing: .12em; text-transform: uppercase; font-size: .8rem; margin-bottom: .5rem; }
h1 { font-size: clamp(3rem, 9vw, 6rem); line-height: 1; margin: 0 0 1.2rem; letter-spacing: -.02em; }
h1 span { color: var(--accent); }
.lead { font-size: 1.2rem; max-width: 34em; }
.nostalgia { color: var(--muted); border-left: 3px solid var(--accent-2); padding-left: 1rem; max-width: 34em; }
.cta { display: flex; flex-wrap: wrap; gap: .8rem; margin: 1.6rem 0 1rem; }
.credit { color: var(--muted); font-size: .92rem; }
.btn {
  display: inline-flex; flex-direction: column; align-items: center;
  padding: .75rem 1.4rem; border-radius: 999px; text-decoration: none;
  border: 1px solid var(--line); color: var(--text); font-weight: 600;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); color: #02001d; border-color: var(--accent); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.big { padding: 1rem 2rem; font-size: 1.1rem; }
.btn small { font-weight: 400; opacity: .75; }
.hero-iris svg { width: 100%; max-width: 460px; margin-inline: auto; display: block; filter: drop-shadow(0 0 40px rgba(84,179,214,.25)); }

/* adımlar */
.steps { list-style: none; counter-reset: s; margin: 0 0 2.5rem; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem; }
.steps li { background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem 1rem; }
.steps b { display: inline-grid; place-items: center; width: 1.8rem; height: 1.8rem; border-radius: 50%; background: var(--accent); color: #02001d; margin-bottom: .6rem; }
.steps p { font-size: .93rem; color: var(--muted); margin: 0; }
.steps h3 { margin-bottom: .4rem; }

figure { margin: 0; }
figcaption { color: var(--muted); font-size: .85rem; margin-top: .5rem; text-align: center; }
.flow svg, .chart svg { width: 100%; height: auto; color: var(--accent); }
.flow .n rect { fill: var(--panel); stroke: var(--line); }
.flow .n.hi rect { stroke: var(--accent); }
.flow .n text { fill: var(--text); font: 600 14px system-ui, sans-serif; text-anchor: middle; }
.flow .l { stroke: var(--accent); stroke-width: 1.6; fill: none; }
.flow .lb { fill: var(--muted); font: 12px system-ui, sans-serif; text-anchor: middle; }

/* sonuçlar */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 1rem; margin-bottom: 2rem; }
.stats div { background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem; }
.stats b { display: block; font-size: 2rem; color: var(--accent); line-height: 1.2; }
.stats span { color: var(--muted); font-size: .9rem; }
.chart { margin: 2rem 0; }
.chart .ax { stroke: var(--line); }
.chart .tx { fill: var(--muted); font: 12px system-ui, sans-serif; }
.chart .ln { fill: none; stroke: var(--accent); stroke-width: 2.5; stroke-linejoin: round; }
.chart .dot { fill: var(--accent); }
.chart .mark { stroke: var(--accent-2); stroke-dasharray: 4 4; }
.note { background: var(--bg-2); border: 1px solid var(--line); border-left: 4px solid var(--accent-2); border-radius: var(--radius); padding: 1.4rem 1.5rem; }
.note p:last-child { margin-bottom: 0; }

/* mimari */
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.cols ul { padding-left: 1.1rem; margin: 0; }
.cols li { margin-bottom: .6rem; }
.gallery { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1rem; margin-top: 2.5rem; }
.gallery img { border-radius: 10px; border: 1px solid var(--line); width: 100%; }
.flow-list { list-style: none; counter-reset: f; margin: 0; padding: 0; }
.flow-list li {
  counter-increment: f; position: relative; padding: .6rem .8rem .6rem 2.6rem; margin-bottom: .4rem;
  background: var(--bg-2); border: 1px solid var(--line); border-radius: 10px; font-size: .95rem;
}
.flow-list li:not(.head)::before {
  content: counter(f); position: absolute; left: .8rem; top: .6rem; width: 1.4rem; height: 1.4rem;
  display: grid; place-items: center; border-radius: 50%; background: var(--accent); color: #02001d; font-size: .8rem; font-weight: 700;
}
.flow-list li.head { counter-increment: none; background: none; border: 0; padding-left: 0; font-weight: 700; color: var(--accent-2); }

/* PCA */
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(72px, 1fr)); gap: .6rem; margin-top: 2rem; }
.tiles canvas { width: 100%; aspect-ratio: 1; border-radius: 8px; border: 1px solid var(--line); image-rendering: pixelated; }

/* tablo */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
table { border-collapse: collapse; width: 100%; min-width: 640px; font-size: .92rem; }
th, td { padding: .75rem .9rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
thead th { background: var(--bg-2); }
tbody th { color: var(--muted); font-weight: 600; width: 16%; }
th:last-child, td:last-child { background: rgba(84, 179, 214, .08); }
tr:last-child th, tr:last-child td { border-bottom: 0; }

/* rapor */
.report { text-align: center; }
.report p { max-width: 34em; margin-inline: auto; }
.report .btn { margin: 1rem 0; }

footer { border-top: 1px solid var(--line); text-align: center; color: var(--muted); font-size: .9rem; padding: 2rem 16px 3rem; }
footer p { margin: .2rem 0; }

/* ---- 2005 logosu (altbilgi) ---- */
.oldlogo { display: inline-flex; flex-direction: column; align-items: center; gap: .3rem; margin: 0 0 1rem; font-size: .8rem; }
.oldlogo img { border-radius: 8px; opacity: .9; }

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

/* ---- hero: iris tarayıcı ---- */
.scanner { position: relative; width: min(380px, 80vw); aspect-ratio: 1; margin-inline: auto; color: var(--accent); }
.scanner .ring { position: absolute; inset: 0; width: 100%; height: 100%; animation: spin 40s linear infinite; }
.scanner .eye {
  position: absolute; inset: 11%; border-radius: 50%; overflow: hidden;
  box-shadow: 0 0 0 3px #02001d, 0 0 0 4px var(--accent), 0 0 60px rgba(84,179,214,.35);
}
.scanner .eye img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.18); filter: saturate(1.15) contrast(1.05); }
.scanner .beam {
  position: absolute; left: 0; right: 0; height: 28%; top: -28%;
  background: linear-gradient(180deg, transparent, rgba(84,179,214,.45) 85%, rgba(190,235,250,.9) 100%);
  animation: sweep 4.5s ease-in-out infinite;
}
.scanner .tag {
  position: absolute; padding: .15rem .55rem; border-radius: 999px; font: 600 .78rem ui-monospace, Consolas, monospace;
  background: var(--panel); border: 1px solid var(--line); color: var(--accent-2);
}
.scanner .t1 { top: 6%; right: 2%; } .scanner .t2 { bottom: 10%; left: -2%; } .scanner .t3 { bottom: 4%; right: 6%; }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes sweep { 0% { top: -28%; } 55%, 100% { top: 100%; } }

/* ---- simülasyon ---- */
.sim { display: grid; grid-template-columns: 1fr auto; gap: 2.5rem; align-items: center; margin-top: 3.5rem; padding: 2rem; background: var(--bg-2); border: 1px solid var(--line); border-radius: 20px; }
.device { width: 290px; padding: 1rem; border-radius: 18px; background: #1a1a1a; border: 1px solid #333; position: relative; }
.lcd {
  font: 15px/1.35 ui-monospace, "Cascadia Mono", Consolas, monospace; letter-spacing: .02em;
  background: #8fae3f; color: #1c2a07; border-radius: 6px; padding: .6rem .7rem; min-height: 6.6em;
  box-shadow: inset 0 0 12px rgba(0,0,0,.45); white-space: pre; overflow: hidden;
}
.keys { display: grid; grid-template-columns: repeat(3, 1fr); gap: .5rem; margin-top: .8rem; }
.keys button { padding: .65rem 0; font-weight: 600; font-size: 1.1rem; font-family: inherit; color: #222; background: linear-gradient(#fafafa, #d8d8d8); border: 0; border-radius: 8px; box-shadow: 0 3px 0 #9a9a9a; cursor: pointer; }
.keys button:active { transform: translateY(2px); box-shadow: 0 1px 0 #9a9a9a; }
.eye-pick { display: flex; gap: .5rem; margin-top: .8rem; }
.eye-pick[hidden] { display: none; }
.eye-pick button { flex: 1; padding: .5rem .3rem; border-radius: 8px; border: 1px solid var(--accent); background: transparent; color: var(--text); font: inherit; font-size: .82rem; cursor: pointer; }
.eye-pick button:hover { background: rgba(84,179,214,.15); }
.door { position: relative; height: 44px; margin-top: .8rem; border-radius: 8px; background: #0c0c1a; border: 1px solid var(--line); overflow: hidden; display: grid; place-items: center; color: var(--muted); font-size: .8rem; }
.door .leaf { position: absolute; inset: 0; width: 100%; background: #2a2970; transform-origin: left; transition: transform .8s ease; }
.door.open .leaf { transform: scaleX(.08); }
.door em { position: relative; font-style: normal; }
.door.open { border-color: #5fd08a; }
.lcd.deny { background: #b06b5c; color: #2b0d08; }

/* ---- kaydırıcı ---- */
.slider { margin: 1.5rem 0 2rem; padding: 1.1rem 1.3rem; background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius); }
.slider input { width: 100%; accent-color: var(--accent); margin: .6rem 0; }
.slider .readout { margin: 0; color: var(--muted); }
.slider b { color: var(--accent); }
.chart .cur { fill: var(--accent-2); stroke: #02001d; stroke-width: 2; }
.chart .curline { stroke: var(--accent-2); stroke-width: 1; }

/* ---- donanım işaretleri, özgün şemalar ---- */
.hw-img { position: relative; }
.pin { position: absolute; width: 1.6rem; height: 1.6rem; margin: -.8rem 0 0 -.8rem; display: grid; place-items: center; border-radius: 50%; background: var(--accent-2); color: #02001d; font-weight: 700; font-size: .85rem; box-shadow: 0 0 0 3px rgba(224,180,76,.35); }
figure.hw img { border-radius: 10px; border: 1px solid var(--line); width: 100%; }
.orig { margin-top: 2rem; border: 1px solid var(--line); border-radius: var(--radius); padding: .8rem 1.1rem; background: var(--bg-2); }
.orig summary { cursor: pointer; font-weight: 600; }
.orig-grid { margin-top: 1rem; align-items: start; }
.orig-grid img { background: #fff; padding: 6px; }

/* ---- kaydırınca beliren bölümler ---- */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .scanner .ring, .scanner .beam { animation: none; }
}

@media (max-width: 800px) {
  .sim { grid-template-columns: 1fr; padding: 1.2rem; }
  .device { width: 100%; max-width: 320px; margin-inline: auto; }
  .top nav { display: none; }
  .lang { margin-left: auto; }
  .hero { grid-template-columns: 1fr; min-height: 0; padding-top: 2rem; }
  .hero-iris { order: -1; }
  .hero-iris svg { max-width: 260px; }
  .cols { grid-template-columns: 1fr; }
  main > section { padding-block: 3rem; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }