:root{--bg:#f4f6fa;--fg:#1b2330;--mut:#6b7686;--card:#fff;--bd:#e1e6ee;--ac:#2563eb;--acfg:#fff;--ach:#1d4ed8;--soft:#eef2f9;--err:#c62828;--sh:0 1px 2px rgba(20,30,50,.06),0 4px 14px rgba(20,30,50,.05)}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:15px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}
main{width:100%;max-width:1400px;margin:0 auto;padding:14px clamp(12px,2.5vw,32px) 40px}
header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
h1{font-size:22px;margin:6px 0;font-weight:700;letter-spacing:-.3px}
#who{display:flex;gap:10px;align-items:center;color:var(--mut)}
.card,form{background:var(--card);border:1px solid var(--bd);border-radius:14px;padding:16px;box-shadow:var(--sh)}
form{display:grid;gap:12px;max-width:380px;margin:40px auto}
label{display:grid;gap:4px;font-size:13px;color:var(--mut)}
.opts label,.btn{display:inline-flex;gap:6px;align-items:center}
.opts label{color:var(--fg)}
input,textarea,select{font:inherit;color:var(--fg);background:#fff;border:1px solid var(--bd);border-radius:10px;padding:9px 11px;width:100%;transition:border-color .12s,box-shadow .12s}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--ac);box-shadow:0 0 0 3px rgba(37,99,235,.15)}
textarea{resize:vertical;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:14px;min-height:96px}
input[type=checkbox]{width:auto;accent-color:var(--ac)}
select{width:auto}
button,.btn{font:inherit;font-weight:500;cursor:pointer;border:1px solid var(--ac);background:var(--ac);color:var(--acfg);border-radius:10px;padding:8px 15px;white-space:nowrap;transition:background .12s;touch-action:manipulation}
button:hover,.btn:hover{background:var(--ach)}
.btn{background:var(--soft);color:var(--fg);border-color:var(--bd)}
.btn:hover{background:#e3e9f4}
button.ghost,button.sm{background:transparent;color:var(--fg);border-color:var(--bd)}
button.ghost:hover,button.sm:hover{background:var(--soft)}
button.sm{padding:4px 11px;font-size:13px;font-weight:400}
button.danger:hover{color:var(--err);border-color:var(--err);background:#fff5f5}
button.on{background:var(--soft);border-color:var(--ac);color:var(--ac)}
.row{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap;align-items:center}
.opts input[type=password]{flex:1;min-width:160px}
#drop.over{outline:2px dashed var(--ac);outline-offset:3px}

/* two columns on wide screens: composer pinned left, history right; one column on phones */
.layout{display:grid;gap:16px;align-items:start}
@media (min-width:900px){
  .layout{grid-template-columns:minmax(320px,400px) minmax(0,1fr)}
  .composer{position:sticky;top:14px}
  textarea{min-height:180px}
}
.history{min-width:0}
.tools{margin-top:0}
.tools input{flex:1;min-width:140px;width:auto}
#list{margin:12px 0;display:grid;gap:10px}
h2{font-size:12px;text-transform:uppercase;letter-spacing:.8px;color:var(--mut);margin:12px 0 0;font-weight:600}
li{list-style:none;background:var(--card);border:1px solid var(--bd);border-radius:12px;padding:11px 13px;display:grid;gap:7px;box-shadow:var(--sh);min-width:0}
li.gone{border-style:dashed}
li .top{display:flex;justify-content:space-between;gap:8px;align-items:baseline;flex-wrap:wrap}
li .name{font-weight:600;overflow-wrap:anywhere}
li .meta,.muted{color:var(--mut);font-size:12px}
li .acts{display:flex;gap:6px;flex-wrap:wrap}
li img{max-width:100%;max-height:300px;border-radius:8px;justify-self:start;background:var(--soft)}
.prev{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;color:#3b4658;white-space:pre-wrap;overflow-wrap:anywhere;background:var(--soft);border-radius:8px;padding:8px 10px}
.prev .gap{color:var(--mut);text-align:center;font-size:11px;letter-spacing:.5px;padding:2px 0}
.full{max-height:60vh;overflow:auto;border:1px solid var(--bd);border-radius:8px;padding:10px 12px;background:#fff}
.full pre.raw{margin:0;white-space:pre-wrap;overflow-wrap:anywhere;font-family:ui-monospace,monospace;font-size:13px}

/* API tokens */
details#tokens,details#sessions{margin-top:12px;border-top:1px solid var(--bd);padding-top:10px}
details#tokens summary,details#sessions summary{cursor:pointer;font-weight:500}
.tform{display:grid;grid-template-columns:1fr 1fr;gap:10px 12px;margin-top:12px}
.tform .tro,.tform button,.tform .thint{grid-column:1/-1}
.tform button{justify-self:start}
.tform .thint{margin:0}
.tform #tCode{letter-spacing:2px;font-variant-numeric:tabular-nums}
@media (max-width:520px){.tform{grid-template-columns:1fr}}
label.inl{display:inline-flex;grid-template-columns:none;gap:6px;align-items:center;color:var(--fg)}
.newtok{margin-top:8px;padding:10px;border:1px solid var(--ac);border-radius:10px;background:var(--soft)}
.newtok code{display:block;font-family:ui-monospace,monospace;font-size:12.5px;overflow-wrap:anywhere;user-select:all}
.toklist{list-style:none;margin:8px 0 0;padding:0;display:grid;gap:6px}
.toklist li{display:flex;gap:8px;align-items:center;justify-content:space-between;flex-wrap:wrap;padding:6px 0;border-top:1px solid var(--bd);box-shadow:none;border-radius:0;background:none;border-left:0;border-right:0;border-bottom:0}
.toklist .tmeta{color:var(--mut);font-size:12px}

/* rendered markdown */
.md{overflow-wrap:anywhere}
.md>*:first-child{margin-top:0}.md>*:last-child{margin-bottom:0}
.md h1,.md h2,.md h3,.md h4,.md h5,.md h6{margin:.9em 0 .4em;line-height:1.25;text-transform:none;letter-spacing:0;color:var(--fg);font-weight:650}
.md h1{font-size:1.5em}.md h2{font-size:1.3em;border-bottom:1px solid var(--bd);padding-bottom:.2em}.md h3{font-size:1.15em}.md h4,.md h5,.md h6{font-size:1em}
.md p{margin:.5em 0;white-space:pre-wrap}
.md code{font-family:ui-monospace,monospace;font-size:.9em;background:var(--soft);padding:.1em .35em;border-radius:5px}
.md pre{background:#0f172a;color:#e2e8f0;border-radius:8px;padding:10px 12px;overflow:auto;margin:.6em 0}
.md pre code{background:none;padding:0;color:inherit;font-size:13px}
.md blockquote{margin:.6em 0;padding:.1em 12px;border-left:3px solid var(--ac);color:var(--mut)}
.md ul,.md ol{margin:.4em 0;padding-left:1.5em}
.md li{display:list-item;list-style:inherit;background:none;border:0;box-shadow:none;padding:0;border-radius:0}
.md ul{list-style:disc}.md ol{list-style:decimal}
.md li.task{list-style:none;margin-left:-1.2em}
.md hr{border:0;border-top:1px solid var(--bd);margin:1em 0}
.md table{border-collapse:collapse;margin:.6em 0;display:block;overflow:auto}
.md th,.md td{border:1px solid var(--bd);padding:4px 10px}
.md th{background:var(--soft)}
.md a{color:var(--ac)}
/* copy feedback */
button.ok,button.ok:hover{background:#e6f6ec;border-color:#2e9d57;color:#17703a}
button.sm{transition:background .15s,border-color .15s,color .15s}
.md pre{position:relative}
.md pre button.cp{position:absolute;top:6px;right:6px;background:#1e293b;color:#cbd5e1;border-color:#334155;opacity:.85}
.md pre button.cp:hover{background:#334155;opacity:1}
.md pre button.cp.ok{background:#14532d;border-color:#22c55e;color:#bbf7d0}

/* syntax highlighting: light palette for .prev/.full, dark one inside markdown code blocks */
:root{--tk-comment:#6b7686;--tk-str:#0a7d3e;--tk-kw:#7c3aed;--tk-fn:#0369a1;--tk-num:#b45309;--tk-const:#b45309;--tk-var:#0e7490;--tk-prop:#1d4ed8;--tk-flag:#a16207;--tk-op:#9a3412;--tk-meta:#6b7686;--tk-head:#1d4ed8;--tk-type:#0f766e;--tk-link:#2563eb;--tk-add:#15803d;--tk-del:#b91c1c;--tk-hunk:#7c3aed}
.md pre{--tk-comment:#8b9bb4;--tk-str:#86efac;--tk-kw:#c4b5fd;--tk-fn:#7dd3fc;--tk-num:#fdba74;--tk-const:#fdba74;--tk-var:#67e8f9;--tk-prop:#93c5fd;--tk-flag:#fcd34d;--tk-op:#fda4af;--tk-meta:#8b9bb4;--tk-type:#5eead4;--tk-add:#86efac;--tk-del:#fca5a5;--tk-hunk:#c4b5fd}
.tk-comment{color:var(--tk-comment);font-style:italic}.tk-meta{color:var(--tk-meta)}
.tk-str{color:var(--tk-str)}.tk-kw{color:var(--tk-kw);font-weight:600}.tk-fn{color:var(--tk-fn)}
.tk-num,.tk-const{color:var(--tk-num)}.tk-var{color:var(--tk-var)}.tk-prop{color:var(--tk-prop)}
.tk-flag{color:var(--tk-flag)}.tk-op{color:var(--tk-op)}.tk-type{color:var(--tk-type)}
.tk-head{color:var(--tk-head);font-weight:700}.tk-bold{font-weight:700}.tk-em{font-style:italic}.tk-strike{text-decoration:line-through}
.tk-code{color:var(--tk-var);background:rgba(127,127,127,.14);border-radius:4px}.tk-link{color:var(--tk-link);text-decoration:underline}
.tk-quote{color:var(--tk-comment)}.tk-add{color:var(--tk-add);background:rgba(34,197,94,.1)}.tk-del{color:var(--tk-del);background:rgba(239,68,68,.1)}.tk-hunk{color:var(--tk-hunk)}
.err{color:var(--err);margin:8px 0 0;min-height:1em}
progress{width:100%;margin-top:8px;accent-color:var(--ac)}

@media (pointer:coarse){button,.btn,select,input:not([type=checkbox]){min-height:42px}button.sm{min-height:36px;padding:6px 13px}}
@media (max-width:520px){.row .btn,.row>button{flex:1 1 auto;text-align:center;justify-content:center}}