:root {
  --bg:#EEF1F5; --panel:#FFFFFF; --ink:#18202E; --muted:#5A6577; --line:#C9D1DC;
  --accent:#B4530B; --accent-fg:#FFFFFF; --err:#B42318; --err-soft:#FCE9E7; --ok:#1F7A4D; --ok-fg:#FFFFFF;
  --shade:rgb(24 32 46 / .16);
  --mono:ui-monospace,"SF Mono","Cascadia Mono","JetBrains Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --r:8px; color-scheme:light;
}
@media (prefers-color-scheme: dark) {
  :root { --bg:#10151F; --panel:#18202D; --ink:#E4E8EF; --muted:#8E99AB; --line:#2A3444;
    --accent:#F2A33A; --accent-fg:#1A1206; --err:#FF7A6B; --err-soft:#2A1A1C; --ok:#5BD6A0; --ok-fg:#0B1A13;
    --shade:rgb(0 0 0 / .45); color-scheme:dark; }
}
*,*::before,*::after { box-sizing:border-box; }
html,body { margin:0; }
body { background:var(--bg); color:var(--ink); min-height:100vh; min-height:100dvh; display:flex; flex-direction:column;
  font:15px/1.55 var(--mono); -webkit-text-size-adjust:100%; }
main { width:100%; max-width:680px; margin:0 auto; padding:56px 16px 32px; flex:1; }
header { margin-bottom:28px; }
h1 { font-size:22px; line-height:1.2; margin:0 0 6px; font-weight:700; letter-spacing:-.01em; }
h1 a { color:inherit; text-decoration:none; border-radius:4px; }
.prompt { color:var(--accent); margin-right:1ch; }
.lede { margin:0; color:var(--muted); font-size:13px; max-width:60ch; }
code { color:var(--accent); font:inherit; }
a { color:var(--accent); }

/* inputs */
textarea, input, select { font:inherit; color:var(--ink); background:var(--panel); border:1px solid var(--line); border-radius:var(--r); }
textarea { display:block; width:100%; min-height:220px; padding:14px 14px 32px; resize:vertical; caret-color:var(--accent); tab-size:2; }
select { min-height:40px; padding:6px 10px; }
.field { position:relative; }
.counter { position:absolute; right:12px; bottom:8px; font-size:12px; color:var(--muted); pointer-events:none; font-variant-numeric:tabular-nums; }
.counter.over { color:var(--err); font-weight:700; }
:focus-visible { outline:2px solid var(--accent); outline-offset:2px; }
textarea:focus-visible, input:focus-visible, select:focus-visible { outline-offset:-1px; border-color:var(--accent); }

/* rows */
.controls { display:flex; flex-wrap:wrap; align-items:center; gap:8px 12px; margin-top:12px; }
.controls.tight { margin-top:0; }
.controls label { display:flex; align-items:center; gap:8px; color:var(--muted); font-size:13px; }
.hint { margin-left:auto; color:var(--muted); font-size:12px; }
kbd { font:inherit; font-size:11px; padding:1px 6px; border:1px solid var(--line); border-bottom-width:2px; border-radius:4px; background:var(--panel); }
@media (hover: none) { .hint { display:none; } #go { margin-left:auto; } }

/* buttons */
button, .btn { font:inherit; font-size:14px; font-weight:700; min-height:44px; padding:8px 18px; border-radius:var(--r);
  border:1px solid transparent; background:var(--accent); color:var(--accent-fg); cursor:pointer; text-decoration:none;
  display:inline-flex; align-items:center; justify-content:center; gap:8px; }
button:hover:not(:disabled), .btn:hover { filter:brightness(1.07); }
button:active:not(:disabled) { transform:translateY(1px); }
.ghost { background:transparent; color:var(--ink); border-color:var(--line); font-weight:500; }
button:disabled { opacity:.55; cursor:progress; }
button.copied { background:var(--ok); color:var(--ok-fg); }
@media (max-width: 420px) { #go, #show { flex:1 1 100%; } }

/* ticket: signature element */
.ticket-wrap { margin-top:4px; filter:drop-shadow(0 0 .6px var(--muted)) drop-shadow(0 14px 18px var(--shade)); }
.ticket { --cut:84px; --n:10px; display:grid; grid-template-columns:var(--cut) minmax(0,1fr); background:var(--panel); border-radius:12px;
  -webkit-mask: radial-gradient(circle var(--n) at var(--cut) 0, #0000 96%, #000) top/100% 51% no-repeat,
                radial-gradient(circle var(--n) at var(--cut) 100%, #0000 96%, #000) bottom/100% 51% no-repeat;
          mask: radial-gradient(circle var(--n) at var(--cut) 0, #0000 96%, #000) top/100% 51% no-repeat,
                radial-gradient(circle var(--n) at var(--cut) 100%, #0000 96%, #000) bottom/100% 51% no-repeat; }
.stub { display:flex; flex-direction:column; align-items:center; justify-content:center; padding:20px 6px;
  border-right:2px dashed var(--line); color:var(--accent); text-align:center; }
.stub-n { font-size:48px; line-height:1; font-weight:800; font-variant-numeric:tabular-nums; }
.stub-l { margin-top:6px; font-size:11px; color:var(--muted); }
.ticket-body { padding:18px 18px 18px 20px; display:grid; gap:12px; align-content:start; }
.ticket-body p { margin:0; }
.ticket-body > button { justify-self:start; }
#link { width:100%; min-height:44px; padding:9px 12px; font-size:13px; background:var(--bg); text-overflow:ellipsis; }
.meta { font-size:12px; color:var(--muted); }
.ticket.spent .stub { color:var(--muted); }
.ticket.spent .stub-n { text-decoration:line-through 3px; }
@media (max-width: 420px) { .ticket { --cut:64px; } .stub-n { font-size:40px; } .ticket-body { padding:16px 14px 16px 16px; } }
@media (prefers-reduced-motion: no-preference) {
  .ticket-wrap:not([hidden]) { animation:print .42s cubic-bezier(.2,.8,.2,1) both; }
  @keyframes print { from { clip-path:inset(0 0 100% 0); transform:translateY(-8px); } to { clip-path:inset(0); transform:none; } }
}

.gone-title { font-size:17px; font-weight:700; line-height:1.35; }
#gone .ticket-body > .btn { justify-self:start; }

/* revealed secret */
#secret-box { margin-top:16px; }
#secret { min-height:0; padding:14px; border-color:var(--accent); }

/* explainer */
.how { margin-top:28px; color:var(--muted); font-size:13px; }
.how summary { cursor:pointer; width:max-content; border-radius:4px; }
.how ol { margin:10px 0 0; padding-left:3ch; max-width:62ch; }
.how li + li { margin-top:4px; }

/* error */
.error { margin:16px 0 0; padding:12px 14px; border-left:3px solid var(--err); background:var(--err-soft); border-radius:0 var(--r) var(--r) 0; }
.error::before { content:"error: "; color:var(--err); font-weight:700; }

/* about + faq (indexable copy, below the tool) */
#about { margin-top:40px; padding-top:24px; border-top:1px dashed var(--line); color:var(--muted); font-size:13px; }
#about h2 { font-size:14px; color:var(--ink); margin:20px 0 8px; }
#about h2:first-child { margin-top:0; }
#about p { margin:0 0 8px; max-width:66ch; }
#about details { border-bottom:1px solid var(--line); padding:8px 0; }
#about summary { cursor:pointer; color:var(--ink); }
#about details p { margin:8px 0 0; }
[data-page=reveal] #create { display:none; }

footer { text-align:center; padding:16px; color:var(--muted); font-size:12px; }
.sr-only { position:absolute; width:1px; height:1px; overflow:hidden; clip-path:inset(50%); white-space:nowrap; }
[hidden] { display:none !important; }