/* ============================================================
   base.css — shared design system for qrcodescanner.co.in
   Extracted from the QR Scanner page. Reused site-wide.
   ============================================================ */

:root{
  --paper:#EDEDE9;
  --surface:#FFFFFF;
  --ink:#14161A;
  --muted:#6B7079;
  --line:#D6D6D0;
  --blue:#1B4DFF;
  --blue-deep:#1338C4;
  --green:#0E7A5F;
  --red:#B0233A;
  --radius:6px;
  --sans:"IBM Plex Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --display:"Bricolage Grotesque",var(--sans);
  --mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  background-image:
    linear-gradient(rgba(20,22,26,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(20,22,26,.035) 1px,transparent 1px);
  background-size:28px 28px;
}

.wrap{max-width:660px;margin:0 auto;padding:20px 18px 64px}
.wrap-wide{max-width:1080px;margin:0 auto;padding:20px 18px 64px}

/* ---------- masthead ---------- */
.masthead{display:flex;align-items:center;gap:10px;padding:6px 0 22px}
.mark{width:26px;height:26px;flex:none}
.wordmark{font-family:var(--display);font-weight:700;font-size:1.05rem;letter-spacing:-.01em}
.masthead a{color:inherit;text-decoration:none}
.masthead .nav-right{margin-left:auto;font-size:.875rem;color:var(--blue);text-decoration:underline;white-space:nowrap}

/* ---------- typography ---------- */
h1,h2,h3{font-family:var(--display);font-weight:700;letter-spacing:-.02em;margin:0}
.lede{margin:0 0 6px;font-family:var(--display);font-weight:700;
  font-size:clamp(2rem,7vw,2.9rem);line-height:1.02;letter-spacing:-.03em;max-width:18ch}
.sub{margin:0 0 22px;color:var(--muted);max-width:58ch;font-size:1rem}

/* ---------- buttons ---------- */
button{font:inherit;cursor:pointer;border-radius:var(--radius);
  border:1px solid var(--line);background:var(--surface);color:var(--ink);
  padding:11px 16px;font-weight:500;display:inline-flex;align-items:center;gap:8px;
  touch-action:manipulation;
  transition:border-color .12s ease,background .12s ease}
button:hover{border-color:#A9A9A1}
button:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
button[disabled]{opacity:.4;cursor:not-allowed}
.primary{background:var(--blue);border-color:var(--blue);color:#fff;justify-content:center}
.primary:hover{background:var(--blue-deep);border-color:var(--blue-deep)}
.chip{border:1px solid var(--line);background:transparent;border-radius:100px;
  padding:5px 12px;font-size:.8125rem;color:var(--muted)}
.chip[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:#fff}

/* ---------- form fields ---------- */
input[type="text"],input[type="number"],input[type="email"],input[type="tel"],
input[type="url"],input[type="search"],textarea,select{
  width:100%;font:inherit;border:1px solid var(--line);background:var(--surface);
  color:var(--ink);border-radius:var(--radius);padding:11px 12px;outline:none}
input:focus,textarea:focus,select:focus{
  border-color:var(--blue);box-shadow:0 0 0 3px rgba(27,77,255,.12)}
textarea{min-height:140px;resize:vertical;font-family:var(--mono);font-size:.9375rem;line-height:1.6}

/* ---------- surfaces ---------- */
.result{margin:22px 0 0;background:var(--surface);border:1px solid var(--line);
  border-left:4px solid var(--green);border-radius:var(--radius);padding:18px}
.result[hidden]{display:none}
.section-head{display:flex;align-items:baseline;justify-content:space-between;
  gap:12px;margin:36px 0 12px}
.linkish{background:none;border:0;padding:0;color:var(--blue);font-size:.875rem;text-decoration:underline}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:10px;margin:18px 0 0}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px;text-align:center}
.stat .num{font-family:var(--display);font-weight:700;font-size:1.75rem;letter-spacing:-.02em;line-height:1}
.stat .lbl{font-family:var(--mono);font-size:.6875rem;text-transform:uppercase;
  letter-spacing:.06em;color:var(--muted);margin:6px 0 0}

/* ---------- button rows ---------- */
.btnrow{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 0}

/* ---------- article ---------- */
.article{margin:44px 0 0;max-width:68ch}
.article h2{margin:36px 0 10px;font-size:1.5rem}
.article h2:first-child{margin-top:0}
.article h3{font-family:var(--display);font-weight:700;font-size:1.0625rem;
  letter-spacing:-.015em;margin:28px 0 8px}
.article p{margin:0 0 12px;color:#3A3E46}
.article ul{margin:0 0 12px;padding-left:20px;color:#3A3E46}
.article li{margin:0 0 6px}
.article strong{font-weight:600;color:var(--ink)}
.article a{color:var(--blue);text-decoration:underline}
.article code{font-family:var(--mono);font-size:.875em;background:var(--surface);
  border:1px solid var(--line);border-radius:3px;padding:1px 4px}

/* ---------- FAQ ---------- */
.faq{margin:14px 0 0;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;padding:14px 2px;font-weight:500;list-style:none;
  display:flex;justify-content:space-between;gap:16px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--blue);font-size:1.25rem;line-height:1;flex:none}
.faq details[open] summary::after{content:"\2212"}
.faq summary:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.faq details p{margin:0 0 14px;color:#3A3E46;max-width:62ch}

/* ---------- footer ---------- */
footer{margin:44px 0 0;padding:18px 0 0;border-top:1px solid var(--line);
  color:var(--muted);font-size:.8125rem}
footer a{color:inherit}

/* ---------- utility ---------- */
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.notes{margin:12px 0 0;color:var(--muted);font-size:.9375rem;max-width:62ch}
.notes p{margin:0 0 10px}

/* ---------- toast ---------- */
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);
  background:var(--ink);color:#fff;padding:10px 18px;border-radius:100px;
  font-size:.875rem;opacity:0;pointer-events:none;transition:opacity .2s ease;z-index:20}
.toast.show{opacity:1}

/* ---------- breadcrumbs ---------- */
.crumbs{font-size:.8125rem;color:var(--muted);margin:0 0 18px;font-family:var(--mono)}
.crumbs a{color:var(--muted);text-decoration:underline}
.crumbs a:hover{color:var(--blue)}
.crumbs span{color:var(--ink)}

/* ---------- related tools ---------- */
.related-list{list-style:none;margin:12px 0 0;padding:0}
.related-list li{background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:12px 14px;margin:0 0 8px;
  display:flex;gap:12px;align-items:center}
.related-list .txt{flex:1;font-size:.9375rem}
.related-list .txt a{color:var(--ink);text-decoration:none;font-weight:500}
.related-list .txt a:hover{color:var(--blue);text-decoration:underline}
.related-list .txt p{margin:2px 0 0;font-size:.8125rem;color:var(--muted)}
.related-list time{font-size:.75rem;color:var(--muted);flex:none;font-family:var(--mono);
  text-transform:uppercase;letter-spacing:.05em}