:root{
  --bg:#f6f5f2; --panel:#ffffff; --side:#efede8; --line:#e4e1da; --ink:#1d1c1a; --muted:#6f6b63;
  --owner-soft:#e8eefc; --visitor-soft:#e3f4ee;
  --agent-soft:#efece6; --accent:#c2581d; --accent-soft:#fbeee5; --ok:#1f8a3b; --lock:#b23b3b; --ask:#b8860b;
}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]){
  --bg:#1a1918; --panel:#232220; --side:#141413; --line:#33312e; --ink:#ecebe7; --muted:#9b978e;
  --owner-soft:#2a2f3d; --visitor-soft:#1d3029;
  --agent-soft:#2c2b28; --accent:#e58a52; --accent-soft:#3a281c; --ok:#5cc777; --lock:#e07070; --ask:#e0b84a;
}}
:root[data-theme="dark"]{
  --bg:#1a1918; --panel:#232220; --side:#141413; --line:#33312e; --ink:#ecebe7; --muted:#9b978e;
  --owner-soft:#2a2f3d; --visitor-soft:#1d3029;
  --agent-soft:#2c2b28; --accent:#e58a52; --accent-soft:#3a281c; --ok:#5cc777; --lock:#e07070; --ask:#e0b84a;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{background:var(--bg);color:var(--ink);font:14px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Inter,sans-serif}
[hidden]{display:none !important}
a{color:inherit}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer}
.btn{border:1px solid var(--line);background:var(--panel);border-radius:8px;padding:6px 12px;text-decoration:none;display:inline-block}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn:disabled{opacity:.45;cursor:default}
.btn.sm{padding:3px 9px;font-size:12px}
.danger{color:var(--lock) !important;border-color:color-mix(in srgb,var(--lock) 40%,var(--line)) !important}
select,input[type=text],input[type=email],input[type=password],textarea{border:1px solid var(--line);background:var(--panel);border-radius:8px;padding:6px 8px}
.muted{color:var(--muted)}
.spacer{flex:1}
.brand{font-weight:700;font-size:17px;letter-spacing:-.02em;text-decoration:none}
.brand span{color:var(--accent)}
.badge{display:inline-block;font-size:11px;border-radius:999px;padding:1px 8px;background:var(--agent-soft);color:var(--muted);vertical-align:middle}
.badge.unlisted,.badge.public{background:var(--visitor-soft);color:var(--ok)}
.badge.hot{background:var(--accent);color:#fff}
.empty{color:var(--muted);text-align:center;margin:auto;padding:24px}
.err{color:var(--lock);font-size:13px}

/* ---------- app shell: top bar + hamburger drawer ---------- */
.shell{display:flex;height:100%}
.drawer{width:272px;flex:none;background:var(--side);border-right:1px solid var(--line);display:flex;flex-direction:column;min-height:0;transition:margin-left .2s ease}
.drawer .dhead{display:flex;align-items:center;gap:8px;height:52px;padding:0 14px;flex:none}
.drawer .dbody{flex:1;overflow-y:auto;padding:4px 8px 16px}
.drawer h4{margin:16px 8px 4px;font-size:11px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}
.ditem{display:flex;align-items:center;gap:8px;width:100%;text-align:left;border:none;background:none;border-radius:8px;padding:7px 10px;text-decoration:none;min-height:34px}
.ditem:hover{background:var(--agent-soft)}
.ditem.on{background:var(--agent-soft);font-weight:600}
.ditem .t{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ditem .more{opacity:0;border:none;background:none;padding:0 4px;color:var(--muted);border-radius:4px}
.ditem:hover .more,.ditem.on .more{opacity:1}
.newbtn{display:flex;align-items:center;gap:8px;width:100%;border:1px solid var(--line);background:var(--panel);border-radius:10px;padding:8px 12px;margin:4px 0 6px;text-decoration:none}
.newbtn:hover{border-color:var(--accent)}
.main{flex:1;display:flex;flex-direction:column;min-width:0;min-height:0}
.appbar{height:52px;flex:none;display:flex;align-items:center;gap:10px;padding:0 14px;border-bottom:1px solid var(--line);background:var(--bg)}
.appbar .title{font-weight:600;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.iconbtn{border:none;background:none;width:36px;height:36px;border-radius:8px;display:grid;place-items:center;flex:none;color:var(--ink)}
.iconbtn:hover{background:var(--agent-soft)}
.iconbtn svg{width:20px;height:20px}
.scrim{display:none}
body.drawer-collapsed .drawer{margin-left:-272px}
@media (max-width:900px){
  .drawer{position:fixed;inset:0 auto 0 0;z-index:30;margin-left:-272px;box-shadow:0 0 40px rgba(0,0,0,.3)}
  body.drawer-open .drawer{margin-left:0}
  body.drawer-open .scrim{display:block;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:20}
}
.view{flex:1;min-height:0;display:flex;flex-direction:column}
.page{flex:1;overflow-y:auto;padding:24px 16px 48px}
.col{max-width:760px;margin:0 auto;width:100%}

/* account menu + popovers */
.acct{position:relative}
.acct summary{list-style:none;cursor:pointer;width:32px;height:32px;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;font-weight:600;font-size:13px}
.acct summary::-webkit-details-marker{display:none}
.acct .menu{position:absolute;right:0;top:calc(100% + 6px);background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:6px;min-width:220px;z-index:40;box-shadow:0 6px 24px rgba(0,0,0,.2);display:flex;flex-direction:column}
.acct .menu a,.acct .menu button{display:block;text-align:left;text-decoration:none;border:none;background:none;padding:7px 10px;border-radius:6px}
.acct .menu a:hover,.acct .menu button:hover{background:var(--agent-soft)}
.pop{position:relative}
.pop summary{list-style:none}
.pop summary::-webkit-details-marker{display:none}
.pop .panel{position:absolute;right:0;top:calc(100% + 6px);background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:12px;width:min(300px,90vw);z-index:40;box-shadow:0 6px 24px rgba(0,0,0,.2);display:flex;flex-direction:column;gap:10px}
dialog{border:1px solid var(--line);border-radius:12px;background:var(--panel);color:var(--ink);padding:16px}
dialog::backdrop{background:rgba(0,0,0,.4)}
.form{display:flex;flex-direction:column;gap:10px;min-width:min(340px,80vw)}
.form label{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--muted)}

/* ---------- chat ---------- */
.feed{flex:1;overflow-y:auto;padding:20px 16px}
.feed .col{display:flex;flex-direction:column;gap:12px}
.msg{max-width:88%;padding:10px 14px;border-radius:18px;word-wrap:break-word;line-height:1.55}
.msg.agent{background:var(--agent-soft);border:1px solid var(--line);align-self:flex-start;border-bottom-left-radius:6px}
.msg.right{align-self:flex-end;border-bottom-right-radius:6px}
.msg.owner{background:var(--owner-soft)}
.msg.visitor{background:var(--visitor-soft)}
.msg .who{font-size:11px;color:var(--muted);margin-bottom:3px;font-weight:600}
.msg p{margin:0 0 8px}
.msg ul,.msg ol{margin:4px 0 8px;padding-left:20px}
.msg li{margin:2px 0}
.msg ul ul,.msg ol ul,.msg ul ol{margin:2px 0}
.msg :last-child{margin-bottom:0}
.msg h3,.msg h4{margin:10px 0 4px;line-height:1.3}
.msg h3{font-size:16px} .msg h4{font-size:14px}
.msg h3:first-child,.msg h4:first-child{margin-top:0}
.msg a{color:var(--accent);text-underline-offset:2px}
.msg code{font-family:ui-monospace,Menlo,monospace;font-size:12px;background:color-mix(in srgb,var(--ink) 8%,transparent);padding:1px 5px;border-radius:4px}
.msg pre{background:color-mix(in srgb,var(--ink) 7%,transparent);border-radius:8px;padding:8px 10px;overflow-x:auto;margin:6px 0 8px}
.msg pre code{background:none;padding:0;white-space:pre}
.msg blockquote{margin:6px 0 8px;padding:2px 0 2px 10px;border-left:3px solid var(--line);color:var(--muted)}
.msg hr{border:none;border-top:1px solid var(--line);margin:10px 0}
.msg .tbl{overflow-x:auto;margin:6px 0 8px}
.msg table{border-collapse:collapse;font-size:13px}
.msg th,.msg td{border:1px solid var(--line);padding:4px 8px;text-align:left;vertical-align:top}
.msg th{background:color-mix(in srgb,var(--ink) 5%,transparent)}
.msg .cont{padding-left:20px;margin:-2px 0 4px}
.choices{display:flex;flex-direction:column;gap:6px;margin-top:10px}
.choices button{text-align:left;border:1px solid var(--line);background:var(--panel);border-radius:10px;padding:7px 11px;font-size:13px}
.choices button:hover:not(:disabled){border-color:var(--accent)}
.choices button:disabled{cursor:default;opacity:.6}
.choices button.picked{border-color:var(--accent);box-shadow:inset 3px 0 0 var(--accent);opacity:1;font-weight:600}
.choices .hint{font-size:11px;color:var(--muted)}
.choices.multi button[data-pick]{display:flex;align-items:center;gap:8px}
.choices .box{flex:none;width:14px;height:14px;border:1.5px solid var(--muted);border-radius:4px;display:grid;place-items:center;font-size:10px;line-height:1}
.choices .picked .box{background:var(--accent);border-color:var(--accent);color:#fff}
.choices .picked .box::after{content:"✓"}
.choices .send-picks{align-self:flex-start;margin-top:2px}
.event{align-self:center;font-size:12px;color:var(--muted);border:1px dashed var(--line);border-radius:999px;padding:3px 10px;max-width:95%;display:inline-flex;align-items:center;gap:6px}
.event span{overflow:hidden;text-overflow:ellipsis}
.ic{width:1.1em;height:1.1em;flex:none;vertical-align:-.15em}
.file .ic,.r .ic{color:var(--muted)}
.file{display:inline-flex;gap:6px;align-items:center;border:1px solid var(--line);background:var(--panel);border-radius:8px;padding:4px 8px;margin-top:6px;font-size:12px;text-decoration:none}
.typing{align-self:flex-start;background:var(--agent-soft);border:1px solid var(--line);border-radius:18px;border-bottom-left-radius:6px;padding:12px 16px;display:flex;gap:4px}
.typing i{width:6px;height:6px;border-radius:50%;background:var(--muted);animation:blink 1.2s infinite}
.typing i:nth-child(2){animation-delay:.2s}.typing i:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,80%,100%{opacity:.25}40%{opacity:1}}
.esc{border:1px solid var(--accent);background:var(--panel);max-width:95%}
.esc .tag{font-size:11px;font-weight:700;color:var(--accent);margin-bottom:4px}
.esc textarea{margin-top:8px;min-height:54px;width:100%;resize:vertical}
.esc .row{display:flex;align-items:center;gap:10px;margin-top:6px;flex-wrap:wrap}
.esc .done{margin-top:8px;font-size:13px;color:var(--ok)}
.banner{background:var(--accent-soft);color:var(--accent);border-radius:10px;padding:7px 12px;font-size:13px;align-self:center}

/* Claude-style composer: send button inside the box */
.composer{padding:8px 16px 16px;flex:none}
.cbox{max-width:760px;margin:0 auto;background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:10px 10px 8px 16px;box-shadow:0 1px 6px rgba(0,0,0,.06);display:flex;flex-direction:column;gap:4px;transition:border-color .15s}
.cbox:focus-within{border-color:color-mix(in srgb,var(--accent) 55%,var(--line))}
.cbox textarea{border:none;background:none;padding:4px 0;resize:none;outline:none;min-height:26px;max-height:240px;width:100%;line-height:1.5}
.cbar{display:flex;align-items:center;gap:6px}
.cbar .iconbtn{width:32px;height:32px;color:var(--muted)}
.send{width:32px;height:32px;border-radius:10px;border:none;background:var(--accent);color:#fff;display:grid;place-items:center;flex:none}
.send:disabled{opacity:.35;cursor:default}
.send svg{width:16px;height:16px}

/* Mobile: no text below 20px */
@media (max-width:700px){
  body, body *{font-size:20px !important}
  body h1{font-size:26px !important}
  body .msg h3, body .brand{font-size:23px !important}
  body .drawer h4{text-transform:none !important;letter-spacing:0 !important}
  .choices .box{width:20px;height:20px}
  .msg{max-width:94%}
  .drawer{width:86vw;margin-left:-86vw}
  body.drawer-open .drawer{margin-left:0}
  .acct summary{width:40px;height:40px}
}
.newbtn svg{width:16px;height:16px;flex:none}