/* qrkodolustur.tr — 2026 performans odaklı, tek dosya CSS
   Hedef: düşük CLS, hızlı LCP, sistem fontu (web font yok = render-blocking yok) */

:root{
  --bg:#ffffff; --fg:#15181f; --muted:#5b6470; --line:#e7eaef;
  --brand:#5b3df5; --brand-2:#7c5cff; --brand-ink:#3a1fd6;
  --ok:#16a34a; --card:#f8f9fc; --radius:14px; --maxw:1120px;
  --shadow:0 1px 2px rgba(20,24,40,.06),0 8px 24px rgba(20,24,40,.06);
}
@media (prefers-color-scheme:dark){
  :root{ --bg:#0e1016; --fg:#e8eaf0; --muted:#9aa3b2; --line:#222838;
         --card:#161a26; --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.35); }
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--fg);
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:17px;line-height:1.7;text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-ink);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:20px}

/* ---- Üst bar ---- */
.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 88%,transparent);
  backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:18px;height:62px}
.brand{font-weight:800;font-size:18px;letter-spacing:-.02em;color:var(--fg)}
.brand b{color:var(--brand)}
.nav nav{display:flex;gap:16px;margin-left:auto;flex-wrap:wrap}
.nav nav a{color:var(--muted);font-weight:600;font-size:15px}
.nav nav a:hover{color:var(--fg);text-decoration:none}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:700;border-radius:999px;
  padding:11px 20px;border:1px solid transparent;cursor:pointer;font-size:15px;line-height:1}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff}
.btn-primary:hover{filter:brightness(1.05);text-decoration:none}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--fg)}

/* ---- Hero ---- */
.hero{padding:54px 0 30px}
.hero h1{font-size:clamp(30px,5vw,46px);line-height:1.12;letter-spacing:-.025em;margin:.2em 0 .35em}
.hero p.lead{font-size:clamp(17px,2.2vw,21px);color:var(--muted);max-width:60ch;margin:0 0 22px}
.hero .cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.eyebrow{display:inline-block;font-weight:700;font-size:13px;letter-spacing:.04em;text-transform:uppercase;
  color:var(--brand);background:color-mix(in srgb,var(--brand) 12%,transparent);padding:6px 12px;border-radius:999px}
.partner-note{font-size:13.5px;color:var(--muted)}
.partner-note b{color:var(--fg)}

/* ---- QR oluştur CTA paneli (qrbug yönlendirme) ---- */
.tool-cta{text-align:center;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:40px 28px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.tool-cta::before{content:"";position:absolute;inset:0;background:
  radial-gradient(900px 200px at 50% -40%,color-mix(in srgb,var(--brand) 18%,transparent),transparent);pointer-events:none}
.tool-cta .ico-big{width:64px;height:64px;border-radius:18px;display:grid;place-items:center;font-size:30px;margin:0 auto 14px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:var(--shadow)}
.tool-cta h2{font-size:clamp(22px,3.2vw,30px);letter-spacing:-.02em;margin:0 0 .3em}
.tool-cta p{color:var(--muted);max-width:56ch;margin:0 auto 22px}
.tool-cta .types-row{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:18px}
.tool-cta .types-row span{border:1px solid var(--line);background:var(--bg);color:var(--muted);
  border-radius:999px;padding:6px 13px;font-weight:600;font-size:13.5px}
.btn-lg{padding:15px 30px;font-size:17px}
.btn-lg.btn-primary{box-shadow:0 8px 24px color-mix(in srgb,var(--brand) 35%,transparent)}

/* ---- QR aracı (kullanım dışı, geriye dönük) ---- */
.tool{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.tool h2{margin:.1em 0 .6em;font-size:22px}
.field{margin-bottom:14px}
.field label{display:block;font-weight:600;font-size:14px;margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border:1px solid var(--line);
  border-radius:10px;background:var(--bg);color:var(--fg);font-size:16px;font-family:inherit}
.field input:focus,.field select:focus{outline:2px solid var(--brand);border-color:var(--brand)}
.types{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.types button{border:1px solid var(--line);background:var(--bg);color:var(--muted);border-radius:999px;
  padding:7px 14px;font-weight:600;font-size:14px;cursor:pointer}
.types button[aria-pressed="true"]{background:var(--brand);color:#fff;border-color:var(--brand)}
.qr-advanced{display:grid;grid-template-columns:1fr 1fr;gap:0 14px;margin-top:4px}
@media (max-width:560px){.qr-advanced{grid-template-columns:1fr}}
.qr-out{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  min-height:280px;border:1px dashed var(--line);border-radius:12px;background:var(--bg);padding:18px}
#qr-canvas{width:220px;height:220px;background:#fff;border-radius:8px;padding:10px}
.qr-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.upsell{margin-top:14px;font-size:13.5px;color:var(--muted);text-align:center}

/* ---- Bölümler ---- */
section.block{padding:40px 0;border-top:1px solid var(--line)}
h2.section{font-size:clamp(24px,3.4vw,32px);letter-spacing:-.02em;margin:0 0 .25em}
.sub{color:var(--muted);max-width:65ch;margin:0 0 26px}
.grid{display:grid;gap:18px}
.grid.c3{grid-template-columns:repeat(3,1fr)}
.grid.c4{grid-template-columns:repeat(4,1fr)}
.grid.c2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.card h3{margin:.1em 0 .4em;font-size:18px}
.card p{margin:0;color:var(--muted);font-size:15px}
.card .ico{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;font-size:20px;
  background:color-mix(in srgb,var(--brand) 14%,transparent);margin-bottom:12px}

/* ---- Adımlar ---- */
ol.steps{counter-reset:s;list-style:none;padding:0;margin:0;display:grid;gap:14px}
ol.steps li{position:relative;padding-left:52px}
ol.steps li::before{counter-increment:s;content:counter(s);position:absolute;left:0;top:-2px;
  width:36px;height:36px;border-radius:10px;background:var(--brand);color:#fff;font-weight:800;
  display:grid;place-items:center}
ol.steps li b{display:block}

/* ---- FAQ ---- */
.faq details{border:1px solid var(--line);border-radius:12px;padding:4px 18px;margin-bottom:10px;background:var(--card)}
.faq summary{cursor:pointer;font-weight:700;padding:14px 0;list-style:none;font-size:16.5px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--brand);font-weight:800}
.faq details[open] summary::after{content:"–"}
.faq details p{margin:0 0 14px;color:var(--muted)}

/* ---- Blog / makale ---- */
.breadcrumb{font-size:13.5px;color:var(--muted);padding:16px 0 0}
.breadcrumb a{color:var(--muted)}
article.post{max-width:760px;margin-inline:auto;padding:10px 0 40px}
article.post h1{font-size:clamp(28px,4.2vw,40px);line-height:1.15;letter-spacing:-.02em;margin:.2em 0 .3em}
.post-meta{display:flex;gap:12px;align-items:center;color:var(--muted);font-size:14px;margin-bottom:22px;flex-wrap:wrap}
article.post h2{font-size:26px;letter-spacing:-.02em;margin:1.6em 0 .4em}
article.post h3{font-size:20px;margin:1.3em 0 .3em}
article.post p,article.post li{font-size:17.5px}
article.post ul,article.post ol{padding-left:22px}
article.post img{border-radius:12px;border:1px solid var(--line);margin:1.2em 0}
article.post table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15.5px;
  border:1px solid var(--line);border-radius:10px;overflow:hidden}
article.post th,article.post td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line)}
article.post thead th{background:var(--card);font-weight:700}
article.post tbody tr:last-child td{border-bottom:none}
article.post td:first-child{font-weight:600}
article.post code{background:var(--card);border:1px solid var(--line);border-radius:6px;
  padding:1px 6px;font-size:.92em;word-break:break-all}
.tldr{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--brand);
  border-radius:10px;padding:16px 18px;margin:0 0 24px}
.tldr b{color:var(--brand)}
.callout{background:color-mix(in srgb,var(--brand) 8%,transparent);border:1px solid color-mix(in srgb,var(--brand) 25%,transparent);
  border-radius:12px;padding:16px 18px;margin:22px 0}
.callout a{font-weight:700}
.toc{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin:0 0 26px}
.toc strong{display:block;margin-bottom:6px;font-size:14px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
.toc ol{margin:0;padding-left:20px}
.toc a{color:var(--fg)}
.related{margin-top:30px}
.related a{display:block;padding:12px 0;border-top:1px solid var(--line);font-weight:600}
.author{display:flex;gap:14px;align-items:center;background:var(--card);border:1px solid var(--line);
  border-radius:12px;padding:16px;margin-top:26px}
.author .ava{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-2));
  display:grid;place-items:center;color:#fff;font-weight:800;flex:none}
.author small{color:var(--muted)}

/* ---- Blog listesi ---- */
.post-card{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;color:inherit}
.post-card:hover{text-decoration:none;border-color:var(--brand)}
.post-card .tag{font-size:12px;font-weight:700;color:var(--brand);text-transform:uppercase;letter-spacing:.04em}
.post-card h3{margin:.3em 0 .3em;font-size:19px;color:var(--fg)}
.post-card p{margin:0;color:var(--muted);font-size:15px}

/* ---- CTA şeridi ---- */
.cta-band{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;border-radius:var(--radius);
  padding:34px;text-align:center;margin:10px 0}
.cta-band h2{margin:0 0 .3em;font-size:clamp(22px,3vw,30px);color:#fff}
.cta-band p{margin:0 0 18px;opacity:.92;max-width:60ch;margin-inline:auto}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.55);color:#fff}
.cta-band .btn-primary{background:#fff;color:var(--brand-ink)}

/* ---- Footer ---- */
.site-footer{border-top:1px solid var(--line);padding:36px 0;margin-top:30px;color:var(--muted);font-size:14.5px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:24px}
.foot-grid h4{color:var(--fg);font-size:14px;text-transform:uppercase;letter-spacing:.04em;margin:0 0 10px}
.foot-grid a{display:block;color:var(--muted);padding:4px 0}
.foot-bottom{margin-top:24px;padding-top:18px;border-top:1px solid var(--line);display:flex;
  justify-content:space-between;gap:12px;flex-wrap:wrap}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

/* ---- Responsive ---- */
@media (max-width:860px){
  .tool{grid-template-columns:1fr}
  .grid.c4{grid-template-columns:repeat(2,1fr)}
  .grid.c3{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:560px){
  .nav nav{display:none}
  .grid.c4,.grid.c2{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
}