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@@ -22,81 +22,76 @@ var pinTmpl = template.Must(template.New("pin").Parse(`<!doctype html>
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<meta name="theme-color" content="#fbfbfa" media="(prefers-color-scheme:light)">
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<meta name="theme-color" content="#09090b" media="(prefers-color-scheme:dark)">
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<meta name="theme-color" content="#fafafa" media="(prefers-color-scheme:light)">
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<meta name="theme-color" content="#0a0a0b" media="(prefers-color-scheme:dark)">
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<meta name="robots" content="noindex">
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<title>Enter PIN · {{.ShortHost}}/{{.Code}}</title>
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<style>
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:root{--bg:#fbfbfa;--surface:#fff;--surface-2:#f4f4f5;--ink:#18181b;--muted:#71717a;
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--line:#e9e9eb;--accent:#2563eb;--accent-soft:rgba(37,99,235,.1);--danger:#dc2626;
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--grad-from:#2563eb;--grad-to:#7c3aed;--grad-ink:#fff;
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--glow-1:rgba(37,99,235,.16);--glow-2:rgba(124,58,237,.14)}
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@media(prefers-color-scheme:dark){:root{--bg:#09090b;--surface:#111113;--surface-2:#19191c;--ink:#fafafa;
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--muted:#a1a1aa;--line:#232327;--accent:#60a5fa;--accent-soft:rgba(96,165,250,.14);--danger:#f87171;
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--grad-from:#60a5fa;--grad-to:#a78bfa;--grad-ink:#09090b;
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--glow-1:rgba(96,165,250,.13);--glow-2:rgba(167,139,250,.12)}}
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:root{--bg:#fafafa;--surface:#fff;--surface-2:#f4f4f5;--ink:#111113;--muted:#6f6f78;--line:#e7e7ea;
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--ring:#d4d4d8;--soft:rgba(17,17,19,.08);--danger:#dc2626;
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--shadow:0 1px 2px rgba(0,0,0,.04),0 2px 8px -2px rgba(0,0,0,.04);--out:cubic-bezier(.23,1,.32,1)}
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@media(prefers-color-scheme:dark){:root{--bg:#0a0a0b;--surface:#121214;--surface-2:#1a1a1d;--ink:#f4f4f5;
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--muted:#9b9ba4;--line:#242428;--ring:#33333a;--soft:rgba(244,244,245,.12);--danger:#f87171;
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--shadow:0 1px 2px rgba(0,0,0,.4)}}
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*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
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body{margin:0;min-height:100vh;display:grid;place-items:center;padding:20px;
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background-color:var(--bg);color:var(--ink);
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font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
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-webkit-font-smoothing:antialiased;
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background-image:radial-gradient(60% 45% at 12% 0%,var(--glow-1),transparent 70%),
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radial-gradient(55% 40% at 92% 100%,var(--glow-2),transparent 70%);
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background-attachment:fixed;background-repeat:no-repeat}
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.card{width:100%;max-width:380px;background:var(--surface);border:1px solid var(--line);
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border-radius:16px;padding:24px;animation:rise .3s ease-out}
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body{margin:0;min-height:100vh;min-height:100dvh;display:grid;place-items:center;padding:16px;
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background:var(--bg);color:var(--ink);
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font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
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-webkit-font-smoothing:antialiased}
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.mono{font-family:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace}
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.card{width:100%;max-width:384px;background:var(--surface);border:1px solid var(--line);
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border-radius:16px;padding:24px;box-shadow:var(--shadow);animation:rise .28s var(--out) backwards}
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@media(min-width:420px){.card{padding:28px}}
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@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
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.lock{width:40px;height:40px;border-radius:12px;color:var(--grad-ink);
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background-image:linear-gradient(135deg,var(--grad-from),var(--grad-to));
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display:grid;place-items:center;margin-bottom:16px}
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.lock svg{width:20px;height:20px}
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h1{font-size:20px;font-weight:600;letter-spacing:-.02em;margin:0 0 6px}
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h1 span{background-image:linear-gradient(135deg,var(--grad-from),var(--grad-to));
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-webkit-background-clip:text;background-clip:text;color:transparent}
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@keyframes rise{from{opacity:0;transform:translateY(6px)}}
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.lock{width:40px;height:40px;border-radius:12px;background:var(--ink);color:var(--bg);
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display:grid;place-items:center;margin-bottom:20px}
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.lock svg{width:18px;height:18px}
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h1{font-size:22px;font-weight:600;letter-spacing:-.02em;margin:0 0 6px}
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.sub{margin:0 0 20px;color:var(--muted);font-size:14px;line-height:1.5}
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.sub b{color:var(--ink);font-weight:500;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;word-break:break-all}
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.sub b{display:block;margin-top:2px;color:var(--ink);font-weight:600;overflow-wrap:anywhere}
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.pins{display:flex;gap:6px}
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@media(min-width:420px){.pins{gap:8px}}
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.pins input{flex:1;min-width:0;height:52px;padding:0;text-align:center;font-size:20px;font-weight:600;
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font-family:ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--ink);
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background:var(--surface-2);border:1px solid var(--line);border-radius:12px;outline:none;
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transition:border-color .15s,box-shadow .15s}
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.pins input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
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.pins input{flex:1;min-width:0;height:48px;padding:0;text-align:center;font-size:18px;font-weight:600;
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color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:12px;outline:none;
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transition:border-color .15s ease,box-shadow .15s ease}
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.pins input:focus{border-color:var(--ring);box-shadow:0 0 0 4px var(--soft)}
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.err{color:var(--danger);font-size:13px;font-weight:500;margin:10px 0 0;min-height:19px}
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form.bad .pins input{border-color:var(--danger)}
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form.bad .pins{animation:shake .4s}
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@keyframes shake{25%{transform:translateX(-5px)}50%{transform:translateX(5px)}75%{transform:translateX(-3px)}}
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button{width:100%;height:48px;margin-top:14px;border:0;border-radius:12px;
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background-image:linear-gradient(135deg,var(--grad-from),var(--grad-to));color:var(--grad-ink);
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font-size:15px;font-weight:500;font-family:inherit;
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cursor:pointer;transition:opacity .15s,transform .1s}
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button:hover{opacity:.9}
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button:active{transform:scale(.99)}
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:focus-visible{outline:none;box-shadow:0 0 0 2px var(--bg),0 0 0 4px var(--accent)}
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.foot{margin-top:18px;text-align:center;font-size:12px;color:var(--muted)}
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@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
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form.bad .pins{animation:shake .35s var(--out)}
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@keyframes shake{25%{transform:translateX(-4px)}50%{transform:translateX(4px)}75%{transform:translateX(-2px)}}
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button{width:100%;height:48px;margin-top:12px;border:0;border-radius:12px;background:var(--ink);color:var(--bg);
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font-size:15px;font-weight:500;font-family:inherit;cursor:pointer;
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transition:opacity .15s ease,transform .16s var(--out)}
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@media(hover:hover){button:hover{opacity:.85}}
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button:active{transform:scale(.97)}
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button:disabled{opacity:.6;cursor:default}
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:focus-visible{outline:none;box-shadow:0 0 0 2px var(--bg),0 0 0 4px var(--ink)}
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.foot{margin-top:20px;display:flex;align-items:center;justify-content:center;gap:6px;font-size:12px;color:var(--muted)}
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.mark{width:16px;height:16px;border-radius:5px;background:var(--ink);color:var(--bg);display:grid;place-items:center}
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.mark svg{width:10px;height:10px}
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@media(prefers-reduced-motion:reduce){.card{animation-name:fade}form.bad .pins{animation:none}button:active{transform:none}
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@keyframes fade{from{opacity:0}}}
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</style>
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</head>
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<body>
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<div class="card">
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<div class="lock"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.75" stroke-linecap="round" stroke-linejoin="round"><rect x="4" y="11" width="16" height="10" rx="2"/><path d="M8 11V7a4 4 0 0 1 8 0v4"/></svg></div>
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<h1>This link is <span>protected</span></h1>
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<p class="sub">Enter the 6-digit PIN to continue to <b>{{.ShortHost}}/{{.Code}}</b>.</p>
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<h1>This link is protected</h1>
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<p class="sub">Enter the 6-digit PIN to open <b class="mono">{{.ShortHost}}/{{.Code}}</b>.</p>
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<form method="post" action="{{.ActionPath}}" id="f" autocomplete="off"{{if .HasError}} class="bad"{{end}}>
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<div class="pins" id="pins">
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<input inputmode="numeric" maxlength="1" aria-label="PIN digit 1" required>
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<input inputmode="numeric" maxlength="1" aria-label="PIN digit 2" required>
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<input inputmode="numeric" maxlength="1" aria-label="PIN digit 3" required>
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<input inputmode="numeric" maxlength="1" aria-label="PIN digit 4" required>
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<input inputmode="numeric" maxlength="1" aria-label="PIN digit 5" required>
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<input inputmode="numeric" maxlength="1" aria-label="PIN digit 6" required>
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<input class="mono" inputmode="numeric" maxlength="1" aria-label="PIN digit 1" autocomplete="one-time-code" required>
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<input class="mono" inputmode="numeric" maxlength="1" aria-label="PIN digit 2" required>
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<input class="mono" inputmode="numeric" maxlength="1" aria-label="PIN digit 3" required>
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<input class="mono" inputmode="numeric" maxlength="1" aria-label="PIN digit 4" required>
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<input class="mono" inputmode="numeric" maxlength="1" aria-label="PIN digit 5" required>
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<input class="mono" inputmode="numeric" maxlength="1" aria-label="PIN digit 6" required>
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</div>
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<p class="err" role="alert">{{if .HasError}}That PIN didn't match. Try again.{{end}}</p>
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<input type="hidden" name="pin" id="pin">
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<button type="submit">Unlock</button>
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<button type="submit" id="go">Unlock</button>
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</form>
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<div class="foot">{{.ShortHost}}</div>
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<div class="foot"><span class="mark"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"><circle cx="6" cy="6" r="3"/><circle cx="6" cy="18" r="3"/><path d="M20 4 8.12 15.88M14.47 14.48 20 20M8.12 8.12 12 12"/></svg></span>snip</div>
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</div>
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<script>
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(function(){
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@@ -110,7 +105,7 @@ button:active{transform:scale(.99)}
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b.value=b.value.replace(/\D/g,'').slice(0,1);
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if(b.value&&i<boxes.length-1)boxes[i+1].focus();
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sync();
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if(hidden.value.length===6)f.submit();
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if(hidden.value.length===6)go();
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});
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b.addEventListener('focus',function(){b.select()});
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b.addEventListener('keydown',function(e){if(e.key==='Backspace'&&!b.value&&i>0){boxes[i-1].focus();fresh()}});
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@@ -118,10 +113,12 @@ button:active{transform:scale(.99)}
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var d=(e.clipboardData.getData('text')||'').replace(/\D/g,'').slice(0,6);
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if(!d)return;e.preventDefault();fresh();
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d.split('').forEach(function(c,j){if(boxes[j])boxes[j].value=c});
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boxes[Math.min(d.length,5)].focus();sync();if(d.length===6)f.submit();
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boxes[Math.min(d.length,5)].focus();sync();if(d.length===6)go();
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});
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});
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f.addEventListener('submit',sync);
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// Auto-submit on the 6th digit; the button says what is happening meanwhile.
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function go(){var b=document.getElementById('go');b.disabled=true;b.textContent='Unlocking…';f.submit()}
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f.addEventListener('submit',function(){sync();var b=document.getElementById('go');b.disabled=true;b.textContent='Unlocking…'});
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if(boxes[0])boxes[0].focus();
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})();
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</script>
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