:root{
  --bg:#12100e; --bg-2:#1a1714; --bg-3:#221e1a; --line:#332d27;
  --fg:#efe9e2; --muted:#9b9089; --accent:#d97757; --accent-2:#c2603f;
  --ok:#5fa570; --warn:#d6a44c; --bad:#cf5c52;
  --radius:10px; --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
  --sans:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;background:var(--bg);color:var(--fg);font:14px/1.5 var(--sans);
  padding-top:env(safe-area-inset-top,0);padding-bottom:env(safe-area-inset-bottom,0);
  overscroll-behavior:none;
}
.hidden{display:none!important}
.muted{color:var(--muted)}
button{font:inherit;cursor:pointer;border-radius:8px;border:1px solid var(--line);
  background:var(--bg-3);color:var(--fg);padding:7px 12px;transition:.15s}
button:hover{background:var(--line)}
button.primary{background:var(--accent);border-color:var(--accent);color:#1a1310;font-weight:600}
button.primary:hover{background:var(--accent-2)}
button.ghost{background:transparent}
button:disabled{opacity:.5;cursor:not-allowed}
input,textarea{font:inherit;background:var(--bg);color:var(--fg);
  border:1px solid var(--line);border-radius:8px;padding:9px 11px;width:100%}
input:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:-1px;border-color:transparent}

/* ---------- login ---------- */
.login{position:fixed;inset:0;display:grid;place-items:center;padding:20px;background:var(--bg)}
.login-card{width:min(360px,100%);background:var(--bg-2);border:1px solid var(--line);
  border-radius:14px;padding:26px;display:flex;flex-direction:column;gap:14px}
.login-card h1{margin:0;font-size:20px}
.login-card p{margin:0}
.login-card label{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--muted)}
.login-error{color:var(--bad);font-size:13px}

/* ---------- layout ---------- */
.app{display:flex;flex-direction:column;height:100dvh}
.topbar{display:flex;align-items:center;gap:12px;padding:10px 14px;
  border-bottom:1px solid var(--line);background:var(--bg-2);flex:0 0 auto}
.brand{font-weight:700;letter-spacing:.2px}
.icon-btn{background:transparent;border:none;font-size:18px;padding:4px 8px;line-height:1}
.body{display:flex;flex:1;min-height:0;position:relative}

.sidebar{width:290px;flex:0 0 290px;border-right:1px solid var(--line);
  background:var(--bg-2);display:flex;flex-direction:column;min-height:0}
.sidebar-actions{display:flex;flex-wrap:wrap;gap:6px;padding:10px;border-bottom:1px solid var(--line)}
.sidebar-actions button{flex:1 1 auto;font-size:12.5px;padding:6px 8px}
.tree{flex:1;overflow-y:auto;padding:8px}
.sidebar-foot{padding:8px 12px;border-top:1px solid var(--line);font-size:11.5px;word-break:break-all}

.proj{margin-bottom:6px}
.proj-head{display:flex;align-items:center;gap:6px;padding:7px 8px;border-radius:8px;cursor:pointer}
.proj-head:hover{background:var(--bg-3)}
.proj-name{flex:1;font-weight:600;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.proj-badge{font-size:10.5px;color:var(--muted);border:1px solid var(--line);
  border-radius:20px;padding:1px 7px;white-space:nowrap}
.proj-badge.dirty{color:var(--warn);border-color:var(--warn)}
.caret{width:12px;text-align:center;color:var(--muted);font-size:10px;flex:0 0 12px}
.proj-body{padding-left:10px;margin-left:6px;border-left:1px solid var(--line)}
.folder-name{font-size:11px;text-transform:uppercase;letter-spacing:.06em;
  color:var(--muted);padding:7px 8px 3px}
.sess{display:flex;align-items:center;gap:7px;padding:6px 8px;border-radius:7px;
  cursor:pointer;font-size:13px}
.sess:hover{background:var(--bg-3)}
.sess.active{background:var(--accent);color:#1a1310;font-weight:600}
.sess-title{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.run-dot{width:7px;height:7px;border-radius:50%;background:var(--muted);flex:0 0 7px}
.run-dot.on{background:var(--ok);box-shadow:0 0 6px var(--ok)}
.proj-actions{display:flex;gap:5px;padding:4px 8px 8px}
.proj-actions button{font-size:11px;padding:3px 7px}

/* ---------- usage panel ---------- */
.usage{margin-left:auto;display:flex;align-items:center;gap:14px;font-size:12px}
.u-item{display:flex;align-items:center;gap:7px;white-space:nowrap}
.u-label{color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.05em}
.u-bar{width:62px;height:6px;border-radius:4px;background:var(--bg-3);overflow:hidden}
.u-fill{height:100%;border-radius:4px;transition:width .4s}
.u-fill.green{background:var(--ok)} .u-fill.yellow{background:var(--warn)} .u-fill.red{background:var(--bad)}
.u-pct{font-variant-numeric:tabular-nums;font-weight:600}
.u-asof{color:var(--muted);font-size:11px}
.u-asof.stale{color:var(--warn)}
.u-note{color:var(--muted);font-size:11.5px;max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.u-overflow{font-size:11px;border:1px solid var(--line);border-radius:20px;padding:1px 8px;color:var(--muted)}

/* ---------- main ---------- */
.main{flex:1;min-width:0;display:flex;flex-direction:column}
.empty{margin:auto;text-align:center;padding:24px}
.session{display:flex;flex-direction:column;flex:1;min-height:0}
.session-head{display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:10px 16px;border-bottom:1px solid var(--line);background:var(--bg-2)}
.session-title{display:flex;align-items:center;gap:8px;font-weight:600;min-width:0}
#s-title{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:46vw}
.session-meta{font-size:11.5px;width:100%;order:3;word-break:break-all}
.session-tools{margin-left:auto;display:flex;gap:6px}
.session-tools button{font-size:12px;padding:4px 9px}
.badge{font-size:10.5px;border:1px solid var(--line);border-radius:20px;
  padding:1px 8px;color:var(--muted);font-weight:500}
.badge.dot.on{color:var(--ok);border-color:var(--ok)}

.chat{flex:1;overflow-y:auto;padding:18px 16px 8px;display:flex;flex-direction:column;gap:14px}
.msg{max-width:min(760px,100%);display:flex;flex-direction:column;gap:5px}
.msg.user{align-self:flex-end;align-items:flex-end}
.who{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.bubble{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);
  padding:11px 14px;overflow-wrap:anywhere}
.msg.user .bubble{background:var(--accent);color:#1a1310;border-color:var(--accent)}
.msg.system .bubble{background:transparent;border-style:dashed;color:var(--muted);font-size:12.5px}
.bubble p{margin:0 0 9px} .bubble p:last-child{margin-bottom:0}
.bubble pre{background:var(--bg);border:1px solid var(--line);border-radius:8px;
  padding:10px 12px;overflow-x:auto;margin:8px 0;font:12.5px/1.55 var(--mono)}
.bubble code{font:12.5px var(--mono);background:var(--bg-3);padding:1px 5px;border-radius:4px}
.bubble pre code{background:none;padding:0}
.msg.user .bubble code{background:rgba(0,0,0,.16)}
.bubble ul,.bubble ol{margin:6px 0;padding-left:22px}
.bubble h1,.bubble h2,.bubble h3{margin:10px 0 6px;font-size:1.05em}
.bubble a{color:inherit}
.thinking{font-size:12.5px;color:var(--muted);border-left:2px solid var(--line);padding-left:10px;font-style:italic}
.tool{border:1px solid var(--line);border-radius:8px;background:var(--bg-2);font-size:12.5px;overflow:hidden}
.tool summary{cursor:pointer;padding:7px 11px;font-family:var(--mono);color:var(--muted);list-style:none}
.tool summary::-webkit-details-marker{display:none}
.tool summary b{color:var(--fg);font-family:var(--sans)}
.tool[data-err="1"] summary b{color:var(--bad)}
.tool pre{margin:0;border:0;border-top:1px solid var(--line);border-radius:0;max-height:340px;overflow:auto}

/* ---------- approval prompt ---------- */
.prompt-box{margin:0 16px 10px;border:1px solid var(--accent);border-radius:var(--radius);
  background:var(--bg-2);padding:12px 14px}
.prompt-q{font-weight:600;margin-bottom:9px}
.prompt-opts{display:flex;flex-wrap:wrap;gap:8px}
.prompt-opts button{font-size:13px}

.terminal{margin:0 16px 10px;border:1px solid var(--line);border-radius:var(--radius);
  background:#0c0a09;max-height:44vh;overflow:auto}
.terminal pre{margin:0;padding:11px 13px;font:12px/1.35 var(--mono);color:#cfc7c0;white-space:pre}

.composer{display:flex;gap:9px;padding:12px 16px;border-top:1px solid var(--line);
  background:var(--bg-2);align-items:flex-end}
.composer textarea{resize:none;max-height:190px;overflow-y:auto}
.composer button{flex:0 0 auto}

/* ---------- modal & toast ---------- */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.6);display:grid;place-items:center;
  padding:18px;z-index:60}
.modal-card{background:var(--bg-2);border:1px solid var(--line);border-radius:14px;
  padding:20px;width:min(440px,100%);display:flex;flex-direction:column;gap:13px}
.modal-card h3{margin:0;font-size:16px}
.modal-card label{display:flex;flex-direction:column;gap:5px;font-size:12.5px;color:var(--muted);margin-bottom:10px}
.modal-actions{display:flex;justify-content:flex-end;gap:8px}
.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(22px + env(safe-area-inset-bottom,0));
  background:var(--bg-3);border:1px solid var(--line);border-radius:9px;padding:10px 16px;
  z-index:80;max-width:min(460px,92vw);box-shadow:0 8px 28px rgba(0,0,0,.5)}
.toast.bad{border-color:var(--bad);color:var(--bad)}

.only-mobile{display:none}
.scrim{display:none}

/* ---------- mobile ---------- */
@media (max-width:820px){
  .only-mobile{display:block}
  .sidebar{position:absolute;inset:0 auto 0 0;z-index:40;transform:translateX(-100%);
    transition:transform .2s;width:min(300px,84vw);flex-basis:auto;box-shadow:0 0 30px rgba(0,0,0,.5)}
  .sidebar.open{transform:none}
  .scrim{display:block;position:absolute;inset:0;background:rgba(0,0,0,.5);z-index:35;
    opacity:0;pointer-events:none;transition:opacity .2s}
  .scrim.on{opacity:1;pointer-events:auto}
  .usage{gap:9px} .u-bar{width:42px} .u-label{display:none} .u-note{display:none}
  .u-asof{display:none}
  #s-title{max-width:38vw}
  .chat{padding:14px 12px 6px}
  .msg{max-width:100%}
  .composer{padding:10px 12px}
  .prompt-box,.terminal{margin-inline:12px}
}
@media (max-width:420px){
  .brand{display:none}
  .session-tools button{padding:4px 7px;font-size:11.5px}
}