/* ppand — design system: white canvas, ink text, single deep green action colour (#1A3328 / #243E32).
   Flat and border-led: hard offset edges, zero blur, zero glow. Centered composition. */
:root{
  --paper:#FFFFFF;
  --surface:#FFFFFF;
  --butter:#EDF3EE;
  --sand:#DCE8DF;
  --ink:#18181B;
  --muted:#52525B;
  --faint:#8A8A90;
  --line:#E4E4E7;
  --accent:#1A3328;
  --accent-lift:#243E32;
  --white:#FFFFFF;
  --r-micro:4px;
  --r-std:8px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:'Geist',ui-sans-serif,system-ui,-apple-system,'Segoe UI',Helvetica,Arial,sans-serif;
  font-size:18px;
  line-height:1.6;
  display:flex;
  flex-direction:column;
  min-height:100vh;
  text-align:center;
  -webkit-font-smoothing:antialiased;
}
.wrap{width:100%;max-width:900px;margin:0 auto;padding:0 24px}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
code,pre,.mono{font-family:'Geist Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}

/* ---------- nav ---------- */
.nav{border-bottom:2px solid var(--ink);background:var(--paper)}
.nav-in{display:flex;align-items:center;justify-content:center;gap:32px;height:66px;flex-wrap:wrap}
.brand{display:inline-flex;align-items:center;gap:11px;color:var(--ink);font-weight:800;font-size:20px;letter-spacing:-.03em}
.brand:hover{text-decoration:none}
.brand-logo{
  width:40px;height:40px;flex:0 0 auto;display:block;
  border:2px solid var(--ink);border-radius:var(--r-micro);
  image-rendering:pixelated;image-rendering:crisp-edges;
}
.nav-links{display:flex;gap:24px}
.nav-links a{color:var(--muted);font-size:15px;font-weight:500}
.nav-links a:hover{color:var(--ink);text-decoration:none}

.main{flex:1;padding-top:80px;padding-bottom:96px}

/* ---------- hero ---------- */
.hero{display:flex;flex-direction:column;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:'Geist Mono',monospace;font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ink);background:var(--sand);
  border:2px solid var(--ink);border-radius:var(--r-micro);
  padding:5px 12px;margin-bottom:28px;
}
h1{
  margin:0;
  font-size:clamp(46px,9vw,80px);
  line-height:.98;
  font-weight:800;
  letter-spacing:-.05em;
}
h1 .dot{color:var(--accent)}
.lede{margin:24px auto 0;max-width:30em;font-size:18px;color:var(--muted)}

/* ---------- form panel ---------- */
.panel{
  position:relative;margin:20px auto 0;max-width:720px;
  border:2px solid var(--ink);border-radius:var(--r-std);background:var(--surface);
  padding:28px 24px;
  box-shadow:6px 6px 0 0 var(--ink);
}
.field-row{display:flex;gap:10px;align-items:stretch;justify-content:center}
input[type=text],input[type=password],select,textarea{
  font-family:inherit;font-size:16px;color:var(--ink);background:var(--white);
  border:2px solid var(--ink);border-radius:var(--r-micro);padding:11px 14px;width:100%;
  text-align:center;
}
textarea{text-align:left}
input::placeholder,textarea::placeholder{color:var(--faint)}
input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:2px}
textarea{resize:vertical;line-height:1.5}
#repoUrl{flex:1 1 auto;min-width:0}

.btn{
  font-family:inherit;font-size:16px;font-weight:600;line-height:1;cursor:pointer;
  border-radius:var(--r-micro);padding:0 24px;height:48px;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;white-space:nowrap;
  border:2px solid var(--ink);background:var(--white);color:var(--ink);
  transition:transform .1s ease,background-color .12s ease;
}
.btn-primary{background:var(--accent);color:#fff;min-width:158px;box-shadow:3px 3px 0 0 var(--ink)}
.btn-primary:hover{background:var(--accent-lift);transform:translate(-1px,-1px);box-shadow:4px 4px 0 0 var(--ink)}
.btn-primary:active{transform:translate(1px,1px);box-shadow:1px 1px 0 0 var(--ink)}
.btn-primary[disabled]{background:var(--accent-lift);cursor:default;transform:none;box-shadow:2px 2px 0 0 var(--ink)}
.btn-ghost{background:var(--surface);border:2px solid var(--line);border-radius:var(--r-std);color:var(--ink);font-weight:500}
.btn-ghost:hover{border-color:var(--ink);text-decoration:none}
.btn-sm{height:40px;font-size:14px;padding:0 16px;min-width:0}

.field-sub{display:flex;align-items:center;justify-content:center;gap:16px;margin-top:14px;flex-wrap:wrap}
.field-note{font-size:14px;color:var(--muted)}
.field-note.err{color:var(--accent);font-weight:500}

/* ---------- manual control ---------- */
.manual{margin-top:18px;padding:20px;border:2px dashed var(--line);border-radius:var(--r-std);background:var(--paper)}
.manual-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.lbl{display:block;font-size:12px;font-weight:600;color:var(--muted);letter-spacing:.06em;text-transform:uppercase}
.lbl input,.lbl select,.lbl textarea{margin-top:8px;font-weight:400;text-transform:none;letter-spacing:0}
.hint-inline{display:block;font-weight:400;font-size:11px;color:var(--faint);text-transform:none;letter-spacing:0}
.manual-checks{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 22px;margin:18px 0}
.manual-checks label{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--ink)}
.manual-checks input{width:16px;height:16px;accent-color:var(--accent);margin:0;padding:0}

/* ---------- mode tabs ---------- */
.tabs{
  display:inline-flex;margin:44px auto 0;border:2px solid var(--ink);border-radius:var(--r-std);
  overflow:hidden;background:var(--white);box-shadow:4px 4px 0 0 var(--ink);
}
.tab{
  font-family:inherit;font-size:15px;font-weight:700;letter-spacing:-.01em;cursor:pointer;
  border:0;border-right:2px solid var(--ink);background:transparent;color:var(--muted);
  padding:12px 26px;transition:background-color .12s ease,color .12s ease;
}
.tab:last-child{border-right:0}
.tab:hover{background:var(--butter);color:var(--ink)}
.tab.on{background:var(--accent);color:#fff}

/* ---------- read log ---------- */
.log{display:flex;flex-wrap:wrap;justify-content:center;gap:6px;margin-top:14px}
.log i{
  font-family:'Geist Mono',monospace;font-style:normal;font-size:11px;letter-spacing:.04em;
  color:var(--muted);background:var(--butter);border:1px solid var(--line);
  border-radius:3px;padding:3px 8px;
}
.log i:last-child{border-color:var(--ink);color:var(--ink)}

/* ---------- examples ---------- */
.examples{margin-top:26px;display:flex;flex-direction:column;align-items:center;gap:12px}
.ex-label{font-size:13px;color:var(--muted);letter-spacing:.02em}
.ex-row{display:flex;flex-wrap:wrap;justify-content:center;gap:10px}
.chip{
  font-family:inherit;font-size:14px;font-weight:600;cursor:pointer;
  background:var(--sand);color:var(--ink);border:2px solid var(--ink);
  border-radius:var(--r-micro);padding:7px 14px;
  box-shadow:2px 2px 0 0 var(--ink);
  transition:transform .1s ease,background-color .12s ease;
}
.chip:hover{background:#CEDFD2;transform:translate(-1px,-1px);box-shadow:3px 3px 0 0 var(--ink)}
.chip:active{transform:translate(1px,1px);box-shadow:1px 1px 0 0 var(--ink)}

.swap-hint{margin:26px auto 0;font-size:14px;color:var(--muted)}
.swap-hint code{background:var(--sand);border:1px solid var(--ink);border-radius:3px;padding:1px 6px;font-size:13px;color:var(--ink)}

/* ---------- result ---------- */
.result{margin:64px auto 0;max-width:760px}
.result-head{display:flex;flex-direction:column;align-items:center;gap:14px}
.result h2{margin:0;font-size:28px;font-weight:800;letter-spacing:-.03em}
.result-meta{margin:0;font-size:13px;color:var(--muted);font-family:'Geist Mono',monospace}
.result-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}

.prompt-box{
  position:relative;margin-top:26px;border:2px solid var(--ink);border-radius:var(--r-std);
  background:var(--white);overflow:hidden;
  box-shadow:6px 6px 0 0 var(--ink);
}
.prompt-bar{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  border-bottom:2px solid var(--ink);background:var(--butter);padding:9px 14px;
}
.prompt-file{font-family:'Geist Mono',monospace;font-size:12px;color:var(--ink);letter-spacing:.02em}
.prompt-dots{display:inline-flex;gap:5px}
.prompt-dots i{width:9px;height:9px;border:2px solid var(--ink);border-radius:2px;background:var(--paper);display:block}
.prompt-dots i:first-child{background:var(--accent)}
.prompt{
  margin:0;padding:24px;background:var(--white);
  font-size:14px;line-height:1.8;color:var(--ink);text-align:left;
  white-space:pre-wrap;overflow-wrap:break-word;word-break:normal;
}
.result-foot{margin:14px 0 0;font-size:12px;color:var(--faint);font-family:'Geist Mono',monospace}

/* ---------- how ---------- */
.how{margin:110px auto 0;border-top:2px solid var(--ink);padding-top:56px}
.how h2{margin:0 0 40px;font-size:36px;font-weight:800;letter-spacing:-.04em}
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.steps li{display:flex;flex-direction:column;align-items:center;padding:24px 18px;border:2px solid var(--ink);border-radius:var(--r-std);background:var(--surface)}
.step-n{
  display:flex;align-items:center;justify-content:center;min-width:40px;height:36px;padding:0 8px;
  border:2px solid var(--ink);border-radius:var(--r-micro);font-family:'Geist Mono',monospace;
  font-size:15px;font-weight:600;background:var(--sand);box-shadow:2px 2px 0 0 var(--ink);
}
.steps h3{margin:18px 0 0;font-size:18px;font-weight:700;letter-spacing:-.02em}
.steps p{margin:10px 0 0;font-size:15px;line-height:1.65;color:var(--muted)}
.how-note{margin:36px auto 0;max-width:52ch;font-size:14px;color:var(--faint)}

/* ---------- footer ---------- */
.foot{border-top:2px solid var(--ink);padding:26px 0}
.foot-in{display:flex;flex-direction:column;align-items:center;gap:12px;font-size:14px;color:var(--muted)}
.foot-links{display:flex;gap:22px}
.foot-links a{color:var(--muted)}
.foot-links a:hover{color:var(--ink)}

/* ---------- responsive ---------- */
@media (max-width:860px){
  .steps{grid-template-columns:1fr;gap:16px}
  .how{margin-top:80px}
}
@media (max-width:768px){
  .manual-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  body{font-size:17px}
  .wrap{padding:0 18px}
  .main{padding-top:52px;padding-bottom:64px}
  .nav-in{gap:18px;height:auto;padding:14px 0}
  .panel{padding:20px 16px;margin-top:40px}
  .panel,.prompt-box{box-shadow:4px 4px 0 0 var(--ink)}
  .tabs{width:100%;margin-top:32px}
  .tab{flex:1 1 0;padding:12px 6px;font-size:14px}
  .field-row{flex-direction:column}
  .btn{width:100%;height:50px}
  .btn-sm{width:auto;flex:1 1 auto}
  .manual-grid{grid-template-columns:1fr}
  .lede{margin-top:20px;font-size:17px}
  .how h2{font-size:28px}
  .prompt{padding:18px}
  .result-actions{width:100%}
}

/* ---------- page nav state ---------- */
.nav-links a.on{color:var(--ink);font-weight:700;border-bottom:2px solid var(--accent)}

/* ---------- battle setup ---------- */
.vs-grid{display:grid;grid-template-columns:1fr auto 1fr;gap:16px;align-items:end}
.vs-side{display:flex;flex-direction:column;gap:8px;text-align:left}
.vs-mark{
  font-family:'Geist Mono',monospace;font-size:13px;font-weight:500;letter-spacing:.1em;
  color:var(--ink);background:var(--sand);border:2px solid var(--ink);border-radius:var(--r-micro);
  padding:10px 10px;align-self:center;
}

/* ---------- arena ---------- */
.arena{display:grid;grid-template-columns:1fr auto 1fr;gap:18px;align-items:start;margin-top:8px}
.arena-mid{display:flex;flex-direction:column;align-items:center;gap:10px;padding-top:52px}
.arena-vs{
  font-family:'Geist Mono',monospace;font-size:15px;font-weight:500;letter-spacing:.08em;color:#fff;
  background:var(--accent);border:2px solid var(--ink);border-radius:var(--r-micro);padding:8px 10px;
}
.arena-seed{font-size:10px;color:var(--faint);writing-mode:vertical-rl}

.fcard{
  border:2px solid var(--ink);border-radius:var(--r-std);background:var(--white);
  padding:16px;text-align:left;box-shadow:5px 5px 0 0 var(--ink);
}
.fcard.won{background:var(--butter);box-shadow:5px 5px 0 0 var(--accent)}
.fcard-top{display:flex;gap:14px;align-items:flex-start}
.fcard-art{
  width:96px;height:96px;flex:0 0 auto;border:2px solid var(--ink);border-radius:var(--r-micro);
  background:var(--paper);image-rendering:pixelated;
}
.fcard-id{min-width:0;flex:1}
.fcard-kind{font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--faint)}
.fcard-id h3{margin:4px 0 6px;font-size:19px;font-weight:800;letter-spacing:-.03em;word-break:break-word}
.fcard-sp{display:inline-block;font-size:11px;color:var(--ink);background:var(--sand);border:1px solid var(--ink);border-radius:3px;padding:2px 7px}
.fcard-stats{margin-top:14px;display:flex;flex-direction:column;gap:7px}
.stat{display:grid;grid-template-columns:38px 1fr 34px;gap:8px;align-items:center}
.stat-k{font-family:'Geist Mono',monospace;font-size:10px;letter-spacing:.08em;color:var(--muted)}
.stat-bar{display:block;height:10px;border:2px solid var(--ink);border-radius:2px;background:var(--paper);overflow:hidden}
.stat-bar i{display:block;height:100%;background:var(--accent)}
.stat-v{font-family:'Geist Mono',monospace;font-size:11px;text-align:right;color:var(--ink)}
.fcard-notes{margin:14px 0 0;padding:0 0 0 16px;font-size:12px;line-height:1.6;color:var(--muted)}
.fcard-notes li{margin:0 0 2px}
.fcard-foot{margin-top:12px;padding-top:10px;border-top:1px solid var(--line);font-size:10px;color:var(--faint)}

.winner{
  margin:26px auto 0;display:inline-flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:center;
  border:2px solid var(--ink);border-radius:var(--r-std);background:var(--white);
  padding:12px 18px;box-shadow:4px 4px 0 0 var(--accent);
}
.winner-k{font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--faint)}
.winner strong{font-size:19px;font-weight:800;letter-spacing:-.02em}
.winner-r{font-size:13px;color:var(--muted)}

/* ---------- rules grid ---------- */
.rules-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;text-align:left}
.rule{border:2px solid var(--ink);border-radius:var(--r-std);background:var(--surface);padding:18px}
.rule .step-n{margin-bottom:12px}
.rule p{margin:0;font-size:14px;line-height:1.6;color:var(--muted)}
.rule b{color:var(--ink);font-weight:600}

/* ---------- long-form detail pages ---------- */
.doc{max-width:760px;margin:0 auto;text-align:left}
.doc h2{margin:56px 0 8px;font-size:28px;font-weight:800;letter-spacing:-.03em}
.doc h2:first-child{margin-top:0}
.doc h3{margin:28px 0 6px;font-size:17px;font-weight:700}
.doc p{margin:12px 0 0;font-size:17px;color:var(--muted)}
.doc ul{margin:12px 0 0;padding-left:20px;font-size:16px;color:var(--muted)}
.doc li{margin:0 0 6px}
.doc code{background:var(--butter);border:1px solid var(--line);border-radius:3px;padding:1px 6px;font-size:13px;color:var(--ink)}
.doc-lead{font-size:19px;color:var(--ink)}
.dtable{width:100%;border-collapse:collapse;margin-top:16px;font-size:14px}
.dtable th,.dtable td{border:1px solid var(--line);padding:9px 12px;text-align:left;vertical-align:top}
.dtable th{background:var(--butter);font-weight:700;color:var(--ink);border-color:var(--ink)}
.dtable td{color:var(--muted)}
.dtable code{background:transparent;border:0;padding:0}
.callout{
  margin-top:20px;border:2px solid var(--ink);border-left-width:6px;border-radius:var(--r-std);
  background:var(--surface);padding:16px 18px;
}
.callout p{margin:0;font-size:15px;color:var(--ink)}
.stage{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.stage b{
  font-family:'Geist Mono',monospace;font-size:11px;font-weight:500;letter-spacing:.04em;
  border:2px solid var(--ink);border-radius:var(--r-micro);padding:5px 9px;background:var(--butter);color:var(--ink);
}
.stage b.next{background:var(--accent);color:#fff}
.stage b.later{background:var(--paper);color:var(--muted);border-color:var(--line)}

@media (max-width:860px){
  .rules-grid{grid-template-columns:1fr}
  .arena,.vs-grid{grid-template-columns:1fr}
  .arena-mid{flex-direction:row;padding-top:0;justify-content:center}
  .arena-seed{writing-mode:horizontal-tb}
  .vs-mark{justify-self:center}
}

/* ---------- home cross-links ---------- */
.step-link{display:inline-block;margin-top:12px;font-size:14px;font-weight:600}
.cross{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:40px;text-align:left}
.cross-card{border:2px solid var(--ink);border-radius:var(--r-std);background:var(--surface);padding:20px;box-shadow:4px 4px 0 0 var(--ink)}
.cross-k{display:block;font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--faint);margin-bottom:8px}
.cross-card p{margin:0 0 16px;font-size:15px;line-height:1.6;color:var(--muted)}
.cross-card .btn{width:auto}

/* ---------- mint layout ---------- */
.vs-grid.one{grid-template-columns:1fr;max-width:460px;margin:0 auto}
.mint-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start;text-align:left}
.mint-side h2{margin:0;font-size:26px;font-weight:800;letter-spacing:-.03em}
.mint-side .result-meta{margin:8px 0 18px}
.mint-note{margin:16px 0 0;font-size:13px;line-height:1.6;color:var(--faint)}

@media (max-width:860px){
  .cross{grid-template-columns:1fr}
  .mint-grid{grid-template-columns:1fr}
}