/* Agent House Rules - black and white, text first, no external files. */
:root {
  --ink: #000;
  --paper: #fff;
  --soft: #f2f2f2;
  --line: 2px solid var(--ink);
  --gap: 1.5rem;
  --radius: 10px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 112.5%; /* 18px base */
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
}
@media (prefers-color-scheme: dark) {
  :root { --ink: #fff; --paper: #000; --soft: #1a1a1a; }
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; padding: 0; background: var(--paper); color: var(--ink); }
body { min-height: 100vh; display: flex; flex-direction: column; }
a { color: var(--ink); text-underline-offset: 3px; text-decoration-thickness: 2px; }
a:hover { text-decoration-thickness: 3px; }
:focus-visible { outline: 3px solid var(--ink); outline-offset: 3px; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 1rem; top: 1rem; background: var(--paper); padding: .5rem 1rem; border: var(--line); z-index: 10; }

header.top, footer.bottom, main { width: 100%; max-width: 40rem; margin: 0 auto; padding: 0 1.25rem; }
header.top { display: flex; justify-content: space-between; align-items: center; padding-top: 1.25rem; padding-bottom: 1rem; border-bottom: 1px solid var(--ink); gap: 1rem; }
header.top .brand { font-weight: 800; text-decoration: none; font-size: 1.05rem; letter-spacing: -0.01em; }
header.top nav a { margin-left: 1rem; font-size: .95rem; }
main { flex: 1; padding-top: 2rem; padding-bottom: 3rem; }
footer.bottom { border-top: 1px solid var(--ink); padding-top: 1.25rem; padding-bottom: 2rem; font-size: .85rem; }
footer.bottom p { margin: .4rem 0; }

h1 { font-size: 2rem; line-height: 1.15; margin: 0 0 1rem; letter-spacing: -0.02em; }
h2 { font-size: 1.4rem; line-height: 1.25; margin: 2.25rem 0 .75rem; }
h3 { font-size: 1.1rem; margin: 1.5rem 0 .5rem; }
p, li { max-width: 36rem; }
.lead { font-size: 1.15rem; }
.small { font-size: .85rem; }
.muted { opacity: .8; }

.btn {
  display: flex; align-items: center; justify-content: center;
  width: 100%; min-height: 3.5rem; padding: .9rem 1.25rem;
  font: inherit; font-weight: 700; font-size: 1.05rem;
  color: var(--paper); background: var(--ink);
  border: var(--line); border-radius: var(--radius);
  cursor: pointer; text-decoration: none; text-align: center;
  -webkit-tap-highlight-color: transparent;
}
.btn:active { transform: translateY(1px); }
.btn.secondary { color: var(--ink); background: var(--paper); }
.btn.big { min-height: 4.25rem; font-size: 1.25rem; }
.btn[disabled] { opacity: .35; cursor: not-allowed; }
.row { display: flex; gap: .75rem; margin-top: var(--gap); }
.row .btn { flex: 1; }
.stack > * + * { margin-top: .75rem; }

/* Choice cards (radio buttons styled as big tap targets) */
fieldset { border: 0; padding: 0; margin: 0; }
legend { font-size: 1.6rem; font-weight: 800; line-height: 1.2; margin-bottom: .5rem; padding: 0; letter-spacing: -0.01em; }
.hint { margin: 0 0 1.25rem; }
.choice { display: block; position: relative; margin-top: .75rem; }
.choice input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.choice span {
  display: block; min-height: 3.75rem; padding: 1rem 1.1rem 1rem 3.4rem;
  border: var(--line); border-radius: var(--radius); cursor: pointer;
  position: relative; font-weight: 600;
}
.choice span small { display: block; font-weight: 400; margin-top: .2rem; font-size: .9rem; }
.choice span::before {
  content: ""; position: absolute; left: 1.1rem; top: 1.15rem;
  width: 1.3rem; height: 1.3rem; border: var(--line); border-radius: 50%; background: var(--paper);
}
.choice input:checked + span { background: var(--ink); color: var(--paper); }
.choice input:checked + span::before { background: var(--paper); box-shadow: inset 0 0 0 4px var(--ink); border-color: var(--paper); }
.choice input:focus-visible + span { outline: 3px solid var(--ink); outline-offset: 3px; }
.extra { margin: .75rem 0 0 0; padding: 1rem; border: 1px dashed var(--ink); border-radius: var(--radius); }
.extra label { font-weight: 600; display: block; margin-bottom: .4rem; }
.extra input[type=number], .extra input[type=text] {
  font: inherit; font-size: 1.2rem; width: 100%; min-height: 3.25rem; padding: .5rem .75rem;
  border: var(--line); border-radius: var(--radius); background: var(--paper); color: var(--ink);
}

.progress { font-size: .9rem; font-weight: 600; margin-bottom: 1rem; display: flex; justify-content: space-between; align-items: center; }
.bar { height: 6px; border: 1px solid var(--ink); border-radius: 6px; margin-bottom: 1.75rem; overflow: hidden; }
.bar > i { display: block; height: 100%; background: var(--ink); width: 0; transition: width .2s; }

.agent-grid .btn { justify-content: flex-start; text-align: left; flex-direction: column; align-items: flex-start; min-height: 5rem; }
.agent-grid .btn small { font-weight: 400; font-size: .9rem; margin-top: .2rem; }

.note { border: var(--line); border-radius: var(--radius); padding: 1rem 1.1rem; margin: 1.25rem 0; }
.note strong:first-child { display: block; margin-bottom: .25rem; }
.note.soft { border-style: dashed; }

pre.rules {
  white-space: pre-wrap; word-wrap: break-word;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .9rem; line-height: 1.5;
  border: var(--line); border-radius: var(--radius); padding: 1.1rem; margin: 1rem 0; background: var(--soft);
  max-height: 28rem; overflow: auto;
}
.copied { font-weight: 700; min-height: 1.5rem; margin-top: .5rem; text-align: center; }

ol.steps, ul.check { padding-left: 1.25rem; }
ol.steps li, ul.check li { margin: .5rem 0; }
ul.check { list-style: none; padding-left: 0; }
ul.check li { padding-left: 2rem; position: relative; }
ul.check li::before { content: "\2610"; position: absolute; left: 0; top: -0.05rem; font-size: 1.3rem; line-height: 1.4; }
.tag { display: inline-block; font-size: .72rem; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; border: 1.5px solid var(--ink); border-radius: 4px; padding: 0 .35rem; margin-left: .3rem; vertical-align: 2px; }
.tag.no { border-style: dashed; }
.src { font-size: .8rem; }

.tabs { display: flex; gap: .5rem; flex-wrap: wrap; margin: 1rem 0 .25rem; }
.tabs button { font: inherit; font-weight: 700; min-height: 3rem; padding: .5rem .6rem; white-space: nowrap; border: var(--line); border-radius: var(--radius); background: var(--paper); color: var(--ink); cursor: pointer; flex: 1; }
.tabs button[aria-selected=true] { background: var(--ink); color: var(--paper); }

.guide-list { list-style: none; padding: 0; }
.guide-list li { margin: 0; border-top: 1px solid var(--ink); }
.guide-list li:last-child { border-bottom: 1px solid var(--ink); }
.guide-list a { display: block; padding: 1rem 0; font-weight: 700; text-decoration: none; min-height: 3.5rem; }
.guide-list a:hover { text-decoration: underline; }

.hidden { display: none !important; }
@media (min-width: 700px) { h1 { font-size: 2.4rem; } }
@media print {
  header.top nav, .btn, .tabs, footer.bottom { display: none !important; }
  pre.rules { max-height: none; border: 1px solid #000; background: #fff; }
}
.linkish { font: inherit; font-size: .95rem; font-weight: 600; background: none; border: 0; color: var(--ink); text-decoration: underline; text-underline-offset: 3px; cursor: pointer; min-height: 2.75rem; min-width: 2.75rem; padding: 0 .25rem; }