/* UCP Sandbox hub pieces on the paper frame (public/css/paper.css): header actions, the sample experiment, the
   test grid, results, the scenarios table, contact, changelog, legal and docs. Tokens come from paper.css. */

/* header: nav, sign in, start */
.hub-nav .w{max-width:1180px}
.hub-nav nav{margin-left:auto}
.hub-cta{display:flex;align-items:center;gap:6px}
.hub-cta .signin{display:inline-flex;align-items:center;min-height:44px;padding:0 12px;font-size:14px;font-weight:600;text-decoration:none;border-radius:7px}
.hub-cta .signin:hover{background:var(--paper-2)}

/* sample experiment (in the trace-card frame) */
.sample{max-width:760px;margin:0 auto 72px;background:var(--card);border:1px solid var(--rule);border-radius:14px;box-shadow:0 1px 0 rgba(0,0,0,.03),0 8px 24px -14px rgba(22,24,29,.18);overflow:hidden}
.sample-top{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:16px 22px;border-bottom:1px solid var(--rule);font-family:var(--mono);font-size:13px;color:var(--muted)}
.sample-top .tag{font-size:11px;font-weight:600;letter-spacing:.06em;padding:2px 8px;border-radius:999px;background:var(--paper-2);border:1px solid var(--rule)}
.sample .ask{padding:18px 22px 4px;font-family:var(--serif);font-size:24px;line-height:1.3;letter-spacing:-.01em}
.sample .metrics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;padding:14px 22px}
.sample .metric{display:flex;flex-direction:column;gap:4px;padding:14px 16px;border-radius:10px;background:var(--paper);border:1px solid var(--rule)}
.sample .metric .l{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.sample .metric .v{display:flex;align-items:baseline;gap:10px;font-variant-numeric:tabular-nums}
.sample .metric .a{font-family:var(--mono);font-size:14px;color:var(--muted)}
.sample .metric .b{font-family:var(--serif);font-size:34px;line-height:1.1;letter-spacing:-.02em}.sample .metric .b i{color:var(--accent)}
.sample .metric .d{font-family:var(--mono);font-size:12px;font-weight:600}.sample .metric .d.up{color:var(--ok)}.sample .metric .d.down{color:var(--bad)}
.sample .trace{list-style:none;margin:0;padding:4px 22px 16px;font-family:var(--mono);font-size:13px}
.sample .trace li{display:grid;grid-template-columns:60px 56px 1fr;gap:12px;padding:8px 0;border-top:1px solid var(--rule)}
.sample .trace li:first-child{border-top:0}
.sample .trace .s{color:var(--muted)}.sample .trace .e{font-weight:600}.sample .trace .d{color:var(--ink-2);overflow-wrap:anywhere}
.sample .trace li.flag .e,.sample .trace li.flag .d{color:var(--accent)}
.sample .foot-note{padding:14px 22px;border-top:1px solid var(--rule);background:var(--paper-2);font-size:14px;color:var(--muted)}

/* what you can test */
.tests{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.tests div,.tests a{display:flex;flex-direction:column;gap:6px;padding:22px;border-radius:14px;background:var(--card);border:1px solid var(--rule);text-decoration:none;color:var(--ink)}
.tests a{justify-content:center;background:transparent;border-style:dashed;border-color:var(--rule-2)}.tests a:hover{border-color:var(--ink)}
.tests b{font-family:var(--serif);font-size:21px;font-weight:500;letter-spacing:-.01em;line-height:1.2}.tests span{font-size:14.5px;color:var(--ink-2)}

/* results + who it's for */
.see{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.see a{display:flex;flex-direction:column;gap:8px;padding:24px;border-radius:14px;background:var(--card);border:1px solid var(--rule);text-decoration:none;color:var(--ink)}.see a:hover{border-color:var(--ink)}
.see b{font-family:var(--serif);font-size:22px;font-weight:500;letter-spacing:-.01em;line-height:1.2}.see span{font-size:15px;color:var(--ink-2)}
.who{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:16px}
.who div{display:flex;flex-direction:column;gap:10px;padding:24px;border-radius:14px;background:var(--paper-2);border:1px solid var(--rule)}
.who b{font-size:17px;font-weight:600;line-height:1.4}

/* scenarios */
.dir.scen code.k{background:var(--ink);border-color:var(--ink);color:#fff;white-space:nowrap}

/* page frame shared by contact and changelog */
.contactpage{max-width:1180px;margin:0 auto;padding:72px 24px 80px;display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:32px;row-gap:28px;align-items:start}
.contactpage .main{grid-column:span 7;display:flex;flex-direction:column;gap:28px;min-width:0}.contactpage aside{grid-column:9 / span 4;display:flex;flex-direction:column;gap:16px;padding-top:150px}
.contactpage .lead{display:flex;flex-direction:column;gap:14px}
.contactpage .kicker,.legal .kicker{font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.contactpage .kicker::before,.legal .kicker::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-right:8px;vertical-align:1px}
.contactpage h1{font-family:var(--serif);font-size:clamp(40px,5vw,56px);line-height:1.04;letter-spacing:-.025em}
.contactpage .lead p{font-size:18px;color:var(--ink-2);max-width:560px}
.contactpage .panel{display:flex;flex-direction:column;gap:20px;padding:28px;border-radius:14px;background:var(--card);border:1px solid var(--rule)}
.contactpage fieldset{margin:0;padding:0;border:0}.contactpage legend{padding:0 0 8px;font-size:14px;font-weight:600}
.contactpage .topics{display:flex;gap:8px;flex-wrap:wrap}
.contactpage .topics label,.changelog .topics a{min-height:44px;padding:0 16px;display:inline-flex;align-items:center;border-radius:999px;border:1px solid var(--rule-2);background:var(--card);font-size:14px;font-weight:500;white-space:nowrap;cursor:pointer;position:relative;text-decoration:none;color:var(--ink)}
.contactpage .topics input{position:absolute;opacity:0;width:0;height:0}
.contactpage .topics label:has(input:checked),.changelog .topics a[aria-current=true]{background:var(--ink);border-color:var(--ink);color:#fff}
.contactpage .topics label:has(input:focus-visible){outline:2px solid var(--ink);outline-offset:2px}
.contactpage .pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.contactpage form > label,.contactpage .pair label{display:flex;flex-direction:column;gap:6px;font-size:14px;font-weight:600;line-height:1.3}
.contactpage .hint{font-size:13px;font-weight:400;line-height:1.5;color:var(--muted)}.contactpage .hint a{font-weight:600}
.contactpage form input[type=text],.contactpage form input[type=email],.contactpage textarea{width:100%;min-height:48px;padding:0 14px;border:1px solid var(--rule-2);border-radius:9px;background:var(--card);color:var(--ink);font:400 16px var(--sans)}
.contactpage input.mono{font:400 15px var(--mono)}.contactpage textarea{padding:12px 14px;line-height:1.5;resize:vertical}
.contactpage form input:focus,.contactpage textarea:focus{outline:2px solid var(--ink);outline-offset:0;border-color:var(--ink)}
.contactpage .err{font-size:13px;font-weight:500;color:var(--bad)}.contactpage .hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
/* The store field and the message hints follow the chosen topic. */
.contactpage .bugonly,.contactpage .hint[class*=for-]{display:none}
.contactpage form:has(input[value=bug]:checked) .bugonly{display:flex}.contactpage form:has(input[value=bug]:checked) .for-bug,.contactpage form:has(input[value=account]:checked) .for-account{display:inline}
.contactpage .send{display:flex;align-items:center;gap:16px}.contactpage .send .btn{flex-shrink:0}
.contactpage .sent{gap:12px;font-size:16px;color:var(--ink-2)}.contactpage .sent .ok{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--ok)}
.contactpage .sent .big{font-family:var(--serif);font-size:30px;color:var(--ink)}.contactpage .acts{display:flex;gap:10px;flex-wrap:wrap;padding-top:4px}
.contactpage aside .card{display:flex;flex-direction:column;gap:4px;padding:22px;border-radius:14px;background:var(--card);border:1px solid var(--rule)}
.contactpage aside h2{margin:0 0 8px;font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.contactpage aside .card a{display:flex;flex-direction:column;gap:2px;padding:12px 0;border-top:1px solid var(--rule);text-decoration:none}.contactpage aside .card a:hover b{text-decoration:underline}
.contactpage aside .card a b{font-size:15px;font-weight:600}.contactpage aside .card a span{font-size:13px;color:var(--muted)}
.contactpage aside .soft{background:var(--paper-2);gap:10px;font-size:14px;color:var(--ink-2)}
@media (max-width:980px){.contactpage{padding-top:40px}.contactpage .main,.contactpage aside{grid-column:span 12}.contactpage aside{padding-top:0}.contactpage .pair{grid-template-columns:1fr}.contactpage .send{flex-direction:column;align-items:flex-start}}

/* changelog */
.changelog .main{grid-column:span 8;gap:32px}.changelog aside{grid-column:10 / span 3}
.changelog .topics{display:flex;gap:8px;flex-wrap:wrap}
.changelog .days{display:flex;flex-direction:column}.changelog .days section{display:grid;grid-template-columns:150px minmax(0,1fr);column-gap:24px;padding:28px 0;border-top:1px solid var(--rule)}
.changelog .when{display:flex;flex-direction:column;gap:4px}.changelog .when h2{font-family:var(--serif);font-size:20px;letter-spacing:-.01em}.changelog .when span{font-family:var(--mono);font-size:12px;color:var(--muted)}
.changelog .days ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:16px}.changelog .days li{display:flex;align-items:flex-start;gap:14px}
.changelog .kind{flex-shrink:0;width:84px;margin-top:2px;justify-content:center;font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;padding:3px 0;border-radius:999px;display:inline-flex;border:1px solid var(--ink);background:var(--ink);color:#fff}
.changelog .kind.improved{background:var(--paper-2);border-color:var(--rule-2);color:var(--ink-2)}.changelog .kind.fixed{background:var(--ok-bg);border-color:var(--ok-line);color:var(--ok)}
.changelog .what{flex-grow:1;display:flex;flex-direction:column;gap:4px;min-width:0}.changelog .what b{font-size:17px;font-weight:600;line-height:1.35}.changelog .what span{font-size:14.5px;line-height:1.55;color:var(--ink-2)}
.changelog .area{flex-shrink:0;white-space:nowrap;padding-top:4px;font-family:var(--mono);font-size:11.5px;color:var(--muted)}.changelog .none{padding:28px 0;border-top:1px solid var(--rule);color:var(--muted)}
.changelog aside .card a.row{flex-direction:row;justify-content:space-between;align-items:center;min-height:44px;padding:8px 0;font-size:14px}.changelog aside .card a.row code{font-size:12px}
.changelog aside .kv{display:flex;justify-content:space-between;gap:12px}.changelog aside .kv.top{padding-top:8px;border-top:1px solid var(--rule-2)}.changelog aside .kv code{font-size:12px}
.changelog .tell{font-size:13.5px;color:var(--muted)}.changelog .tell a{font-weight:600;color:var(--ink)}
@media (max-width:980px){.changelog .main,.changelog aside{grid-column:span 12}}
@media (max-width:640px){.changelog .days section{grid-template-columns:1fr;row-gap:14px}.changelog .area{display:none}}

/* legal */
.legal{max-width:760px;margin:0 auto;padding:72px 24px 96px;display:flex;flex-direction:column;gap:14px;font-size:16px;line-height:1.7}
.legal h1{font-family:var(--serif);font-size:clamp(36px,5vw,52px);letter-spacing:-.025em;line-height:1.05}.legal .lede{font-size:19px;color:var(--ink-2)}.legal .updated{font-family:var(--mono);font-size:12.5px;color:var(--muted)}
.legal h2{font-family:var(--serif);font-size:24px;letter-spacing:-.01em;margin-top:28px}
.legal ul{margin:0;padding-left:22px;display:flex;flex-direction:column;gap:8px}.legal a{font-weight:600}
.legal .note{padding:14px 16px;border-radius:10px;background:var(--warn-bg);border:1px solid var(--warn-line);color:#3d2a00;font-size:15px}
.legal .entity{margin-top:32px;padding-top:20px;border-top:1px solid var(--rule);font-size:14px;color:var(--muted)}
.legal table{width:100%;border-collapse:collapse;font-size:14px;line-height:1.5}.legal th,.legal td{text-align:left;vertical-align:top;padding:10px 12px 10px 0;border-bottom:1px solid var(--rule)}
.legal th{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
@media (max-width:820px){.legal{padding-top:40px}.legal table,.legal tbody,.legal tr,.legal td{display:block}.legal thead{display:none}.legal td{border:0;padding:2px 0}.legal tr{padding:10px 0;border-bottom:1px solid var(--rule)}}

/* docs (quickstart) */
.docs-head .w{max-width:none;padding:0 28px}
.docs-head .section{font-family:var(--mono);font-size:13px;color:var(--muted);padding-left:12px;border-left:1px solid var(--rule-2)}
.docs-search{margin-left:24px;width:340px;min-height:44px;padding:0 12px;display:flex;align-items:center;gap:8px;border:1px solid var(--rule-2);border-radius:9px;background:var(--card);color:var(--muted)}
.docs-search:focus-within{border-color:var(--ink);outline:2px solid var(--ink);outline-offset:0}
.docs-search input{flex-grow:1;min-width:0;border:0;outline:none;background:transparent;font:400 14px var(--sans);color:var(--ink)}
.docs-search kbd{font:500 11px var(--mono);padding:2px 6px;border:1px solid var(--rule);border-radius:4px;background:var(--paper-2)}
.docs-head .right{margin-left:auto;display:flex;align-items:center;gap:4px}
.docs-head .right a:not(.btn){display:inline-flex;align-items:center;min-height:44px;padding:0 10px;font-family:var(--mono);font-size:13px;color:var(--ink-2);text-decoration:none;border-radius:7px}.docs-head .right a:not(.btn):hover{background:var(--paper-2);color:var(--ink)}
.docs{display:flex;flex-grow:1;border-top:0}
.docs-nav{width:264px;flex-shrink:0;padding:28px 18px;display:flex;flex-direction:column;gap:22px;border-right:1px solid var(--rule);font-size:14px;position:sticky;top:0;align-self:flex-start;max-height:100vh;overflow:auto}
.docs-nav .g{display:flex;flex-direction:column;gap:1px}.docs-nav .gt{padding:0 10px 6px;font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.docs-nav a{min-height:40px;padding:0 10px;display:flex;align-items:center;justify-content:space-between;gap:8px;border-radius:7px;text-decoration:none;color:var(--ink-2)}
.docs-nav a small{font-family:var(--mono);font-size:10.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.docs-nav a[aria-current=page]{background:var(--paper-2);font-weight:600;color:var(--ink)}.docs-nav a:hover{background:var(--paper-2);color:var(--ink)}
.docs-main{flex-grow:1;min-width:0;padding:44px 56px 64px;display:flex;flex-direction:column;gap:40px;max-width:900px}
.docs-main .crumbs{font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--muted)}
.docs-main h1{font-family:var(--serif);font-size:clamp(34px,4.4vw,50px);line-height:1.06;letter-spacing:-.025em}
.docs-main .lead{font-size:18px;color:var(--ink-2)}
.docs-main section{display:flex;flex-direction:column;gap:14px;scroll-margin-top:24px}
.docs-main h2{font-family:var(--serif);font-size:30px;letter-spacing:-.015em;line-height:1.15}.docs-main h2 .n{font-family:var(--mono);font-size:15px;color:var(--accent);vertical-align:4px;margin-right:4px}
.docs-main p{font-size:16px;line-height:1.7}.docs-main p.small{font-size:14.5px;line-height:1.6;color:var(--ink-2)}
.docs-main pre{margin:0;padding:18px 20px;border-radius:12px;background:var(--code-bg);color:var(--code-ink);font:400 13px/1.65 var(--mono);white-space:pre-wrap;overflow-wrap:anywhere;overflow-x:auto}
.docs-main .warn{display:flex;gap:12px;padding:14px 16px;border-radius:10px;background:var(--warn-bg);border:1px solid var(--warn-line);color:#3d2a00;font-size:14.5px;line-height:1.55}.docs-main .warn svg{flex-shrink:0;margin-top:2px}
.codetabs{display:flex;flex-direction:column;border-radius:12px;overflow:hidden;background:var(--code-bg)}
.codetabs [role=tablist]{display:flex;gap:2px;padding:6px 6px 0;background:#23262C}
.codetabs [role=tab]{min-height:44px;padding:0 16px;border:0;border-radius:7px 7px 0 0;font:600 13px var(--mono);cursor:pointer;background:transparent;color:var(--code-dim)}
.codetabs [role=tab][aria-selected=true]{background:var(--code-bg);color:#fff}
.codetabs [role=tab]:focus-visible{outline:2px solid #fff;outline-offset:-4px}
.codetabs pre{border-radius:0}
table.doc{width:100%;border-collapse:separate;border-spacing:0;background:var(--card);border:1px solid var(--rule);border-radius:12px;overflow:hidden;font-size:14.5px}
table.doc th{background:var(--paper-2);text-align:left;font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:500;padding:12px 16px;border-bottom:1px solid var(--rule-2)}
table.doc td{padding:11px 16px;border-top:1px solid var(--rule)}table.doc tr:first-child td{border-top:0}
table.doc td.mono{font-family:var(--mono);font-size:13px}table.doc td.cap{font-family:var(--mono);font-size:12px;color:var(--muted)}
table.doc small{margin-left:6px;font-family:var(--mono);font-size:11px;text-transform:uppercase;color:var(--muted)}
.docs-main .ok{color:var(--ok);font-weight:600}.docs-main .no{color:var(--bad);font-weight:600}
.tiles3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.tiles3>*{display:flex;flex-direction:column;gap:6px;padding:18px;border-radius:12px;background:var(--card);border:1px solid var(--rule);text-decoration:none;color:var(--ink)}
.tiles3>a:hover{border-color:var(--ink)}
.tiles3 code{align-self:flex-start;font-size:12.5px}.tiles3 span{font-size:14px;line-height:1.5;color:var(--ink-2)}.tiles3 b{font-family:var(--serif);font-size:19px;font-weight:500}
.docs-foot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:24px;border-top:1px solid var(--rule);font-family:var(--mono);font-size:12px;color:var(--muted)}.docs-foot a{color:var(--ink);font-weight:600}
.docs-aside{width:256px;flex-shrink:0;padding:44px 24px;display:flex;flex-direction:column;gap:28px;position:sticky;top:0;align-self:flex-start}
.docs-aside nav{display:flex;flex-direction:column;gap:2px;font-size:13.5px}.docs-aside nav>span{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:6px}
.docs-aside nav a{display:flex;align-items:center;min-height:32px;text-decoration:none;color:var(--ink-2);border-left:2px solid transparent;padding-left:10px}.docs-aside nav a.on{color:var(--ink);font-weight:600;border-left-color:var(--accent)}
.statuscard{display:flex;flex-direction:column;gap:10px;padding:16px;border-radius:12px;background:var(--card);border:1px solid var(--rule);font-size:13px}
.statuscard .up{display:flex;align-items:center;gap:8px;font-weight:600}.statuscard .up::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--ok)}
.statuscard dl{margin:0;display:flex;flex-direction:column;gap:8px}.statuscard dt{color:var(--muted)}.statuscard dd{margin:0}.statuscard .mono{font-family:var(--mono);font-size:12px;overflow-wrap:anywhere}

@media (max-width:1100px){.tests{grid-template-columns:repeat(2,minmax(0,1fr))}.docs-aside{display:none}.docs-search{width:220px}}
@media (max-width:980px){
  .hub-nav .w{flex-wrap:wrap;height:auto;padding-top:8px;padding-bottom:8px;row-gap:4px}
  .hub-nav nav{order:3;width:100%;margin-left:-6px;overflow-x:auto;scrollbar-width:none}.hub-nav nav::-webkit-scrollbar{display:none}
  .hub-nav nav a{white-space:nowrap}
  .hub-cta{margin-left:auto}
}
@media (max-width:900px){.see,.who{grid-template-columns:1fr}}
@media (max-width:820px){
  .docs-nav,.docs-search,.docs-head .section{display:none}.docs-main{padding:28px 16px 48px}.docs-head .w{padding:0 16px}
  .tiles3{grid-template-columns:1fr}table.doc td.cap,table.doc th.cap{display:none}
}
@media (max-width:640px){
  .sample{margin-bottom:48px}.sample .metrics{grid-template-columns:1fr}.sample .trace li{grid-template-columns:52px 1fr}.sample .trace li .e{grid-column:2}.sample .trace li .d{grid-column:1/-1}
  .tests{grid-template-columns:1fr}
  .dir.scen th:last-child,.dir.scen td:last-child{display:none}
  .docs-head .right a:not(.btn){display:none}
}
@media (max-width:420px){.hub-cta .signin{display:none}}