:root {
  --bg: #F5F7FA;
  --card: #FFFFFF;
  --text: #0A0B0D;
  --muted: #6B7280;
  --blue: #0052FF;
  --blue-dark: #0043CE;
  --green: #16A34A;
  --green-bg: #E8F7EE;
  --red: #DC2626;
  --red-bg: #FDECEC;
  --amber: #B45309;
  --amber-bg: #FEF3E2;
  --border: #E5E7EB;
  --radius: 14px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.45;
  padding-bottom: calc(76px + env(safe-area-inset-bottom, 0px));
}

/* Header */
.app-header {
  position: sticky; top: 0; z-index: 20;
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
  padding: 12px 16px;
  background: rgba(255,255,255,.94);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.app-header h1 { margin: 0; font-size: 20px; letter-spacing: -0.01em; }
.header-meta { margin-top: 4px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.pill {
  display: inline-block; padding: 3px 10px; border-radius: 999px;
  font-size: 11px; font-weight: 800; letter-spacing: .05em;
}
.pill.paper { background: #E3EDFF; color: var(--blue); border: 1px solid #C7DAFF; }
.kill-status { font-size: 12px; color: var(--muted); font-weight: 600; }
.kill-status.engaged { color: var(--red); }
.kill-status.off { color: var(--green); }

/* Main layout */
main { max-width: 480px; margin: 0 auto; padding: 12px 14px 24px; }
h2 {
  font-size: 13px; color: var(--muted); text-transform: uppercase;
  letter-spacing: .07em; margin: 22px 0 10px; font-weight: 700;
}
.tab-pane { display: none; }
.tab-pane.active { display: block; }
.cards { display: grid; gap: 10px; }
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px;
  box-shadow: 0 1px 2px rgba(16,24,40,.04);
}
.card .row { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.card .name { font-weight: 700; font-size: 16px; }
.card .meta { color: var(--muted); font-size: 13px; margin-top: 4px; }
.card .meta b { color: var(--text); }
.card-label { font-size: 13px; font-weight: 700; color: var(--muted); }
.big { font-size: 30px; font-weight: 800; letter-spacing: -0.02em; }
.pl-pos { color: var(--green); font-weight: 800; }
.pl-neg { color: var(--red); font-weight: 800; }
.meta .pl-pos, .meta .pl-neg { font-weight: 700; }

/* Ticker */
.ticker-price { font-size: 32px; font-weight: 800; letter-spacing: -0.02em; margin-top: 4px; }
.fresh { font-size: 11px; font-weight: 800; padding: 3px 10px; border-radius: 999px; letter-spacing: .05em; }
.fresh.live { background: var(--green-bg); color: var(--green); }
.fresh.stale { background: var(--amber-bg); color: var(--amber); }

/* Status pills */
.status { font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 999px; white-space: nowrap; }
.status.active { background: var(--green-bg); color: var(--green); }
.status.stopped, .status.killed, .status.error { background: var(--red-bg); color: var(--red); }
.status.paused { background: var(--amber-bg); color: var(--amber); }

/* Confidence / experiment tags */
.tag { display: inline-block; font-size: 11px; font-weight: 800; padding: 3px 10px; border-radius: 999px; letter-spacing: .04em; text-transform: uppercase; }
.tag.high { background: var(--green-bg); color: var(--green); }
.tag.medium { background: var(--amber-bg); color: var(--amber); }
.tag.low, .tag.large { background: #F1F5F9; color: var(--muted); }
.tag.experimental { background: var(--amber-bg); color: var(--amber); }
.tag.go { background: var(--green-bg); color: var(--green); }
.verdict { margin-top: 8px; font-weight: 800; font-size: 15px; padding: 10px 12px; border-radius: 10px; }
.verdict.go { background: var(--green-bg); color: var(--green); }
.verdict.pass { background: #F1F5F9; color: var(--muted); }
.paper-tag { display: inline-block; font-size: 11px; font-weight: 800; color: var(--muted); border: 1px solid #E2E8F0; border-radius: 999px; padding: 2px 8px; margin-left: 6px; text-transform: uppercase; letter-spacing: .04em; }

/* Buttons */
.btn {
  font: inherit; border: 0; border-radius: 12px; padding: 12px 16px;
  font-weight: 700; cursor: pointer; font-size: 14px;
  -webkit-tap-highlight-color: transparent;
}
.btn:active { transform: scale(.98); }
.btn.danger { background: var(--red); color: #fff; }
.btn.primary { background: var(--blue); color: #fff; }
.btn.primary:active { background: var(--blue-dark); }
.btn.ghost { background: #EDF0F5; color: var(--text); }
.btn.wide { width: 100%; margin-top: 12px; }
.btn.small { padding: 8px 12px; font-size: 13px; }
.btn-row { display: flex; gap: 10px; margin-top: 12px; }
.btn-row .btn { flex: 1; }
button.approve { background: var(--green); color: #fff; padding: 10px 16px; border-radius: 10px; font-weight: 700; font: inherit; cursor: pointer; margin-right: 8px; }
button.reject { background: #EDF0F5; color: var(--text); padding: 10px 16px; border-radius: 10px; font-weight: 700; font: inherit; cursor: pointer; }

/* Forms */
.field { margin-bottom: 12px; }
.field label { display: block; font-size: 13px; font-weight: 700; margin-bottom: 4px; }
.field label .req { color: var(--red); }
.field .hint { font-size: 12px; color: var(--muted); font-weight: 400; }
.field input, .field textarea {
  width: 100%; font: inherit; padding: 11px 12px;
  border: 1px solid var(--border); border-radius: 10px; background: #fff; color: var(--text);
}
.field input:focus, .field textarea:focus { outline: 2px solid var(--blue); border-color: var(--blue); }
.field textarea { min-height: 70px; resize: vertical; }

/* Key/value rows */
.kv { display: grid; gap: 0; margin-top: 8px; }
.kv .kv-row { display: flex; justify-content: space-between; gap: 12px; padding: 8px 0; border-top: 1px solid #F1F3F6; font-size: 13px; }
.kv .kv-row:first-child { border-top: 0; }
.kv .k { color: var(--muted); word-break: break-word; }
.kv .v { font-weight: 600; text-align: right; word-break: break-word; font-variant-numeric: tabular-nums; }

/* Fee estimate / warnings */
.fee-estimate { margin-top: 12px; padding: 12px; border-radius: 10px; background: #F8FAFC; border: 1px solid var(--border); font-size: 13px; }
.fee-estimate .warn { color: var(--red); font-weight: 800; }
.fee-estimate .ok { color: var(--green); font-weight: 700; }
.result { margin-top: 12px; padding: 12px; border-radius: 10px; font-size: 13px; background: #F8FAFC; border: 1px solid var(--border); }
.result.good { background: var(--green-bg); border-color: #BFE7CC; }
.result.bad { background: var(--red-bg); border-color: #F5C2C2; }
.result .mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; word-break: break-all; }

/* Audit list */
.audit { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.audit li {
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  padding: 10px 12px; font-size: 13px; color: var(--muted);
}
.audit li b { color: var(--text); }

/* Error card */
.error-card { background: var(--red-bg); border: 1px solid #F5C2C2; color: #7F1D1D; }
.error-card .meta { color: #7F1D1D; }

/* Tappable cards */
.tappable { cursor: pointer; }
.tappable:active { background: #F8FAFC; }

/* Bottom tab bar */
#tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 20;
  display: flex;
  background: rgba(255,255,255,.96);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  border-top: 1px solid var(--border);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}
#tabbar button {
  flex: 1; border: 0; background: none; font: inherit;
  font-size: 11px; font-weight: 700; color: var(--muted);
  padding: 10px 2px 12px; cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
#tabbar button.active { color: var(--blue); }
#tabbar button:active { color: var(--blue); }

@media (min-width: 520px) {
  main { padding-left: 20px; padding-right: 20px; }
}