:root {
  --bg: #f4f5f7;
  --panel: #ffffff;
  --panel-2: #f9fafb;
  --text: #15181e;
  --muted: #5d6573;
  --faint: #8a93a3;
  --border: #e3e6eb;
  --accent: #2f5bea;
  --accent-soft: #e8eefe;
  --good: #12804a;
  --good-soft: #e5f5ec;
  --warn: #a05a00;
  --warn-soft: #fff3df;
  --bad: #c62d2d;
  --bad-soft: #fde9e9;
  --live: #7a3cf0;
  --live-soft: #f0e8ff;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 3px rgba(16, 24, 40, 0.08);
  --radius: 10px;
  --mono: ui-monospace, 'SF Mono', 'Cascadia Mono', Consolas, monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --panel: #171a21;
    --panel-2: #1c2029;
    --text: #e8eaee;
    --muted: #a2a9b6;
    --faint: #737b8a;
    --border: #2a2f3a;
    --accent: #7c9cff;
    --accent-soft: #1e2847;
    --good: #4cc98a;
    --good-soft: #13291e;
    --warn: #f0b04d;
    --warn-soft: #2e2413;
    --bad: #ff7676;
    --bad-soft: #351819;
    --live: #b48cff;
    --live-soft: #2a1f44;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
button, input, select, textarea { font: inherit; color: inherit; }
a { color: var(--accent); }
.boot { padding: 40px; color: var(--muted); }
.num { font-variant-numeric: tabular-nums; }
.mono { font-family: var(--mono); font-size: 12.5px; }
.muted { color: var(--muted); }
.faint { color: var(--faint); }
.good { color: var(--good); }
.bad { color: var(--bad); }
.warn { color: var(--warn); }
.hidden { display: none !important; }

/* ---------- top bar & tabs */
.topbar {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: center; gap: 16px;
  padding: 10px 24px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.brand { font-weight: 650; letter-spacing: -0.01em; white-space: nowrap; }
.brand span { color: var(--faint); font-weight: 500; }
.tabs { display: flex; gap: 2px; overflow-x: auto; flex: 1; }
.tab {
  border: 0; background: none; cursor: pointer;
  padding: 7px 12px; border-radius: 7px; color: var(--muted); white-space: nowrap;
}
.tab:hover { background: var(--panel-2); color: var(--text); }
.tab.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.badge {
  display: inline-block; min-width: 18px; padding: 0 6px; margin-left: 6px;
  border-radius: 9px; background: var(--bad); color: #fff; font-size: 11px; font-weight: 700; line-height: 18px; text-align: center;
}
.user { display: flex; align-items: center; gap: 10px; color: var(--muted); white-space: nowrap; }

main { max-width: 1240px; margin: 0 auto; padding: 24px; }
h1 { font-size: 20px; margin: 0 0 4px; letter-spacing: -0.01em; }
h2 { font-size: 15px; margin: 0 0 12px; }
h3 { font-size: 14px; margin: 0 0 8px; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin: 28px 0 12px; }
.section-head:first-child { margin-top: 0; }

/* ---------- panels, cards, grid */
.panel {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 18px;
}
.grid { display: grid; gap: 14px; }
.grid.kpis { grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }
.grid.two { grid-template-columns: 3fr 2fr; }
@media (max-width: 900px) { .grid.two { grid-template-columns: 1fr; } }
.kpi .label { color: var(--muted); font-size: 12.5px; }
.kpi .value { font-size: 22px; font-weight: 650; margin-top: 2px; letter-spacing: -0.01em; }
.kpi .sub { color: var(--faint); font-size: 12px; margin-top: 2px; }
.meter { height: 6px; background: var(--panel-2); border-radius: 3px; margin-top: 8px; overflow: hidden; border: 1px solid var(--border); }
.meter > div { height: 100%; background: var(--accent); }
.meter.hot > div { background: var(--bad); }

/* ---------- status hero */
.hero { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.hero .state { display: flex; align-items: center; gap: 14px; }
.dot { width: 14px; height: 14px; border-radius: 50%; flex: none; }
.dot.running { background: var(--good); box-shadow: 0 0 0 4px var(--good-soft); }
.dot.live { background: var(--live); box-shadow: 0 0 0 4px var(--live-soft); }
.dot.paused { background: var(--warn); box-shadow: 0 0 0 4px var(--warn-soft); }
.dot.down { background: var(--bad); box-shadow: 0 0 0 4px var(--bad-soft); }
.hero .title { font-size: 18px; font-weight: 650; }
.hero .details { color: var(--muted); font-size: 12.5px; }

/* ---------- buttons, pills */
.btn {
  display: inline-flex; align-items: center; gap: 6px; cursor: pointer;
  padding: 8px 14px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--panel); font-weight: 550;
}
.btn:hover { background: var(--panel-2); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.07); }
.btn.danger { background: var(--bad); border-color: var(--bad); color: #fff; }
.btn.good { background: var(--good); border-color: var(--good); color: #fff; }
.btn.small { padding: 4px 10px; font-size: 12.5px; }
.pill {
  display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 12px; font-weight: 600;
  background: var(--panel-2); color: var(--muted); border: 1px solid var(--border); white-space: nowrap;
}
.pill.info { background: var(--panel-2); color: var(--muted); }
.pill.paper { background: var(--accent-soft); color: var(--accent); border-color: transparent; }
.pill.live { background: var(--live-soft); color: var(--live); border-color: transparent; }
.pill.good { background: var(--good-soft); color: var(--good); border-color: transparent; }
.pill.bad { background: var(--bad-soft); color: var(--bad); border-color: transparent; }
.pill.warn { background: var(--warn-soft); color: var(--warn); border-color: transparent; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip { cursor: pointer; padding: 5px 12px; border-radius: 999px; border: 1px solid var(--border); background: var(--panel); color: var(--muted); }
.chip.active { background: var(--text); color: var(--panel); border-color: var(--text); }

/* ---------- tables */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: 12px; font-weight: 600; color: var(--muted); background: var(--panel-2); position: sticky; top: 0; }
td.right, th.right { text-align: right; }
tr.clickable { cursor: pointer; }
tr.clickable:hover td { background: var(--panel-2); }
tr.detail td { background: var(--panel-2); }
.market { max-width: 360px; }
.gate-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 6px 16px; margin: 4px 0; }
.gate { display: flex; gap: 8px; font-size: 12.5px; }
.empty { padding: 28px; text-align: center; color: var(--muted); }

/* ---------- proposals & reports */
.proposal { border-left: 3px solid var(--accent); }
.proposal.strategy { border-left-color: var(--live); }
.proposal + .proposal { margin-top: 12px; }
.proposal .q { font-size: 15.5px; font-weight: 650; margin: 6px 0 4px; }
.change { font-family: var(--mono); font-size: 12.5px; background: var(--panel-2); border: 1px solid var(--border); border-radius: 6px; padding: 2px 8px; display: inline-block; }
.kv { display: grid; grid-template-columns: 120px 1fr; gap: 6px 12px; margin: 10px 0; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; }
.evidence { margin: 10px 0; font-size: 12.5px; }
.evidence td, .evidence th { padding: 5px 8px; }
.actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-top: 12px; }
.actions input { flex: 1; min-width: 200px; }
.report { line-height: 1.6; }
.report h1, .report h2, .report h3 { margin: 14px 0 6px; }
.report p { margin: 8px 0; }
.report ul { margin: 6px 0; padding-left: 20px; }
.report code { font-family: var(--mono); font-size: 12.5px; background: var(--panel-2); padding: 1px 4px; border-radius: 4px; }
.list-item { display: flex; justify-content: space-between; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--border); cursor: pointer; }
.list-item:last-child { border-bottom: 0; }
.list-item:hover .title { color: var(--accent); }

/* ---------- forms */
input[type='text'], input[type='number'], input[type='password'], select, textarea {
  width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--panel);
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
input:disabled, select:disabled, textarea:disabled { background: var(--panel-2); color: var(--faint); }
textarea { font-family: var(--mono); font-size: 12.5px; min-height: 220px; }
.fields { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px 18px; }
.field label { display: block; font-weight: 600; font-size: 13px; margin-bottom: 4px; }
.field .help { color: var(--faint); font-size: 12px; margin-top: 3px; }
.lock { color: var(--warn); font-size: 11.5px; font-weight: 600; margin-left: 6px; }
.check { display: flex; align-items: center; gap: 8px; padding-top: 6px; }
.diff { margin: 10px 0; padding: 0; list-style: none; }
.diff li { font-family: var(--mono); font-size: 12.5px; padding: 3px 0; }
.callout { padding: 10px 14px; border-radius: 8px; background: var(--warn-soft); color: var(--warn); margin: 10px 0; }
.callout.bad { background: var(--bad-soft); color: var(--bad); }
.callout.good { background: var(--good-soft); color: var(--good); }

/* ---------- login */
.login { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login .panel { width: 100%; max-width: 360px; padding: 28px; }
.login h1 { margin-bottom: 18px; }
.login .field + .field { margin-top: 12px; }
.login .btn { width: 100%; justify-content: center; margin-top: 18px; }

/* ---------- chart */
.chart svg { width: 100%; height: 220px; display: block; color: var(--muted); }
.chart .line { fill: none; stroke-width: 2; }
.chart .line.paper { stroke: var(--accent); }
.chart .line.live { stroke: var(--live); }
.legend { display: flex; gap: 14px; font-size: 12.5px; color: var(--muted); margin-top: 6px; }
.swatch { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 5px; vertical-align: -1px; }
.swatch.paper { background: var(--accent); }
.swatch.live { background: var(--live); }

/* ---------- toast */
.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); z-index: 20;
  background: var(--text); color: var(--panel); padding: 10px 16px; border-radius: 8px; box-shadow: var(--shadow);
}
.toast.error { background: var(--bad); color: #fff; }

@media (max-width: 640px) {
  .topbar { flex-wrap: wrap; padding: 10px 16px; row-gap: 8px; }
  /* The tabs get their own scrollable row; squeezed between brand and logout they vanish. */
  .tabs { order: 3; flex: 1 1 100%; }
  .user { margin-left: auto; }
  .brand span { display: none; }
  main { padding: 16px; }
  .user .who { display: none; }
}

/* ---------- chat */
.chat { display: flex; flex-direction: column; gap: 12px; padding: 0; overflow: hidden; }
.chat-log { display: flex; flex-direction: column; gap: 10px; padding: 18px; min-height: 280px; max-height: calc(100vh - 330px); overflow-y: auto; }
.chat-empty { margin: auto 0; }
.msg { max-width: min(760px, 85%); padding: 10px 14px; border-radius: 12px; line-height: 1.55; }
.msg p { margin: 4px 0; }
.msg table { margin: 6px 0; font-size: 12.5px; }
.msg.user { align-self: flex-end; background: var(--accent); color: #fff; border-bottom-right-radius: 4px; white-space: pre-wrap; }
.msg.assistant { align-self: flex-start; background: var(--panel-2); border: 1px solid var(--border); border-bottom-left-radius: 4px; }
.msg .tools { margin-top: 6px; font-size: 11.5px; color: var(--faint); }
.chat-input { display: flex; gap: 10px; align-items: flex-end; padding: 12px 18px 18px; border-top: 1px solid var(--border); }
.chat-input textarea { flex: 1; min-height: 44px; max-height: 180px; resize: vertical; font-family: inherit; font-size: 14px; }
.typing { display: flex; gap: 4px; padding: 4px 0; }
.typing span { width: 7px; height: 7px; border-radius: 50%; background: var(--faint); animation: blink 1.2s infinite ease-in-out; }
.typing span:nth-child(2) { animation-delay: 0.2s; }
.typing span:nth-child(3) { animation-delay: 0.4s; }
@keyframes blink { 0%, 80%, 100% { opacity: 0.25; } 40% { opacity: 1; } }