:root {
  color-scheme: light dark;
  --bg:      #f6f7f9;
  --panel:   #ffffff;
  --ink:     #14181f;
  --muted:   #5b6673;
  --line:    #e2e6eb;
  --accent:  #2f5fd0;
  --ok:      #17794a;
  --ok-bg:   #e7f4ed;
  --warn:    #8a5a00;
  --warn-bg: #fdf1dc;
  --stop:    #b3261e;
  --stop-bg: #fdeceb;
  --hold:    #6c3fb5;
  --hold-bg: #f1ebfb;
  --radius:  10px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1116; --panel: #161b22; --ink: #e6edf3; --muted: #9aa7b4;
    --line: #262d36; --accent: #7aa2f7;
    --ok: #5fd39b; --ok-bg: #10281d;
    --warn: #e3b341; --warn-bg: #2b2312;
    --stop: #ff7b72; --stop-bg: #2d1614;
    --hold: #c8a6ff; --hold-bg: #221936;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 15px/1.55 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
header {
  display: flex; flex-wrap: wrap; gap: 1rem; align-items: center;
  justify-content: space-between;
  padding: 1.15rem clamp(1rem, 4vw, 2.5rem);
  background: var(--panel); border-bottom: 1px solid var(--line);
}
.brand { display: flex; gap: .8rem; align-items: center; }
.mark {
  width: 34px; height: 34px; border-radius: 9px; flex: none;
  background: linear-gradient(135deg, var(--accent), var(--hold));
}
h1 { margin: 0; font-size: 1.1rem; letter-spacing: -.01em; }
.sub { margin: .12rem 0 0; color: var(--muted); font-size: .84rem; }
.standing {
  display: flex; align-items: center; gap: .5rem;
  padding: .42rem .8rem; border-radius: 999px;
  border: 1px solid var(--line); font-size: .85rem; font-weight: 600;
}
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--muted); }
.standing.closed { color: var(--ok);   background: var(--ok-bg);   border-color: transparent; }
.standing.closed .dot { background: var(--ok); }
.standing.half_open { color: var(--warn); background: var(--warn-bg); border-color: transparent; }
.standing.half_open .dot { background: var(--warn); }
.standing.open { color: var(--stop); background: var(--stop-bg); border-color: transparent; }
.standing.open .dot { background: var(--stop); }
.standing.held { color: var(--hold); background: var(--hold-bg); border-color: transparent; }
.standing.held .dot { background: var(--hold); animation: pulse 1.4s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .25; } }

main {
  display: grid; gap: 1rem; align-items: start;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  padding: clamp(1rem, 3vw, 1.75rem);
  max-width: 1400px; margin: 0 auto;
}
.panel {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.1rem 1.15rem;
}
h2 { margin: 0 0 .2rem; font-size: .95rem; letter-spacing: -.01em; }
h3 { margin: 1.1rem 0 .45rem; font-size: .8rem; text-transform: uppercase;
     letter-spacing: .06em; color: var(--muted); }
.hint { margin: 0 0 .8rem; color: var(--muted); font-size: .84rem; }

.chips { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: .8rem; }
.chip {
  font: inherit; font-size: .8rem; cursor: pointer;
  padding: .35rem .65rem; border-radius: 999px;
  border: 1px solid var(--line); background: transparent; color: var(--ink);
}
.chip:hover { border-color: var(--accent); color: var(--accent); }
.chip em { font-style: normal; opacity: .6; margin-left: .3rem; }

.log { display: flex; flex-direction: column; gap: .5rem; min-height: 90px;
       max-height: 340px; overflow-y: auto; margin-bottom: .8rem; }
.msg { padding: .5rem .7rem; border-radius: 9px; max-width: 88%;
       font-size: .88rem; animation: rise .22s ease-out; }
@keyframes rise { from { opacity: 0; transform: translateY(5px); } }
.msg.you { align-self: flex-end; background: var(--accent); color: #fff; }
.msg.bot { align-self: flex-start; border: 1px solid var(--line); }
.msg.bot.held    { background: var(--hold-bg); border-color: transparent; }
.msg.bot.refused { background: var(--stop-bg); border-color: transparent; }
.msg .tag { display: block; font-size: .68rem; text-transform: uppercase;
            letter-spacing: .07em; opacity: .65; margin-bottom: .12rem; }

form { display: flex; gap: .4rem; }
input {
  flex: 1; font: inherit; padding: .5rem .7rem; border-radius: 8px;
  border: 1px solid var(--line); background: var(--bg); color: var(--ink);
}
button[type=submit], .ghost {
  font: inherit; font-size: .87rem; cursor: pointer; padding: .5rem .9rem;
  border-radius: 8px; border: 1px solid transparent;
  background: var(--accent); color: #fff;
}
.ghost { background: transparent; color: var(--muted); border-color: var(--line); }

.machine { display: flex; align-items: stretch; gap: .3rem; margin: .3rem 0 .9rem; }
.node {
  flex: 1; text-align: center; padding: .55rem .3rem; border-radius: 9px;
  border: 1px solid var(--line); transition: background .3s, color .3s, border-color .3s;
}
.node b { display: block; font-size: .84rem; }
.node span { font-size: .7rem; color: var(--muted); }
.node.on { border-color: transparent; }
#node-closed.on { background: var(--ok-bg);   color: var(--ok); }
#node-half.on   { background: var(--warn-bg); color: var(--warn); }
#node-open.on   { background: var(--stop-bg); color: var(--stop); }
#node-open.on.held { background: var(--hold-bg); color: var(--hold); }
.node.on span { color: inherit; opacity: .75; }
.edge { flex: none; width: 16px; align-self: center; height: 2px; background: var(--line); }

.verdict { padding: .65rem .75rem; border-radius: 9px; font-size: .86rem;
           border: 1px solid var(--line); }
.verdict.empty { color: var(--muted); }
.verdict code { font-size: .82rem; }
.verdict .why { display: block; margin-top: .3rem; color: var(--muted); font-size: .8rem; }
.verdict.allow   { background: var(--ok-bg);   border-color: transparent; }
.verdict.warn    { background: var(--warn-bg); border-color: transparent; }
.verdict.refused { background: var(--stop-bg); border-color: transparent; }
.verdict.held    { background: var(--hold-bg); border-color: transparent; }

.policies { list-style: none; margin: 0; padding: 0; display: grid; gap: .35rem; }
.policies li { display: flex; gap: .5rem; align-items: baseline;
               font-size: .82rem; padding: .35rem .5rem;
               border: 1px solid var(--line); border-radius: 8px; }
.policies .act { font-size: .68rem; padding: .1rem .38rem; border-radius: 5px;
                 font-weight: 700; letter-spacing: .03em; flex: none; }
.act.require_approval { background: var(--hold-bg); color: var(--hold); }
.act.open             { background: var(--stop-bg); color: var(--stop); }
.act.warn             { background: var(--warn-bg); color: var(--warn); }
.policies .tool { margin-left: auto; color: var(--muted); font-size: .76rem;
                  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

.approvals { display: grid; gap: .6rem; }
.approval {
  border: 1px solid var(--line); border-radius: 9px; padding: .7rem .8rem;
  animation: rise .25s ease-out;
}
.approval.pending { border-color: var(--hold); background: var(--hold-bg); }
.approval .ask { font-size: .88rem; font-weight: 650; }
.approval .call {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .8rem;
  margin: .35rem 0; padding: .4rem .5rem; border-radius: 6px;
  background: rgba(127,127,127,.1); overflow-x: auto;
}
.approval .meta { font-size: .76rem; color: var(--muted); }
.approval .acts { display: flex; gap: .4rem; margin-top: .6rem; flex-wrap: wrap; }
.approval input { font-size: .82rem; padding: .35rem .5rem; }
.approval button { font: inherit; font-size: .82rem; cursor: pointer;
                   padding: .38rem .8rem; border-radius: 7px; border: 1px solid transparent; }
.approve { background: var(--ok); color: #fff; }
.decline { background: var(--stop); color: #fff; }
.settled { font-size: .78rem; padding: .3rem .5rem; border-radius: 6px;
           background: rgba(127,127,127,.12); margin-top: .4rem; }
.empty-note { color: var(--muted); font-size: .84rem; }

.incidents { display: grid; gap: .5rem; }
.incident { border: 1px solid var(--line); border-radius: 9px; padding: .6rem .7rem;
            font-size: .83rem; }
.incident .head { display: flex; gap: .5rem; align-items: baseline; flex-wrap: wrap; }
.incident .st { font-size: .68rem; font-weight: 700; padding: .1rem .38rem;
                border-radius: 5px; letter-spacing: .03em; }
.st.open       { background: var(--stop-bg); color: var(--stop); }
.st.remediated { background: var(--ok-bg);   color: var(--ok); }
.incident .anchor { margin-left: auto; font-family: ui-monospace, Menlo, monospace;
                    font-size: .72rem; color: var(--muted); }
.rem { margin: .4rem 0 0; padding-left: .75rem; border-left: 2px solid var(--line);
       font-size: .79rem; color: var(--muted); }

.chain { margin: 0; padding-left: 1.2rem; display: grid; gap: .25rem;
         max-height: 190px; overflow-y: auto; font-size: .78rem;
         font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.chain li::marker { color: var(--muted); }
.chain-state { font-size: .7rem; padding: .1rem .4rem; border-radius: 5px;
               text-transform: none; letter-spacing: 0; }
.chain-state.ok  { background: var(--ok-bg);  color: var(--ok); }
.chain-state.bad { background: var(--stop-bg); color: var(--stop); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}