/* Growth Engine UI — one stylesheet, light and dark from the same variables. */
:root {
  --bg: #f6f8f7;
  --panel: #ffffff;
  --panel-2: #f0f3f1;
  --text: #16211c;
  --muted: #5f6f67;
  --border: #dde4e0;
  --accent: #1f6f4f;
  --accent-text: #ffffff;
  --weak: #b3261e;
  --weak-bg: #fde8e6;
  --developing: #8a6100;
  --developing-bg: #fdf1dc;
  --strong: #1f6f4f;
  --strong-bg: #e2f2ea;
  --shadow: 0 1px 2px rgba(16, 32, 25, .06), 0 2px 8px rgba(16, 32, 25, .04);
  --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111714;
    --panel: #19211d;
    --panel-2: #212b26;
    --text: #e7efea;
    --muted: #9bada4;
    --border: #2b3732;
    --accent: #4bbd8a;
    --accent-text: #08130d;
    --weak: #ff8a80;
    --weak-bg: #3a1f1d;
    --developing: #e8be6a;
    --developing-bg: #38301c;
    --strong: #4bbd8a;
    --strong-bg: #163024;
    --shadow: none;
  }
}
:root[data-theme="dark"] {
  --bg: #111714; --panel: #19211d; --panel-2: #212b26; --text: #e7efea; --muted: #9bada4;
  --border: #2b3732; --accent: #4bbd8a; --accent-text: #08130d;
  --weak: #ff8a80; --weak-bg: #3a1f1d; --developing: #e8be6a; --developing-bg: #38301c;
  --strong: #4bbd8a; --strong-bg: #163024; --shadow: none;
}

* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.55 system-ui, -apple-system, "Segoe UI", sans-serif;
}
a { color: var(--accent); }
h1 { font-size: 1.5rem; margin: 0 0 .25rem; }
h2 { font-size: 1.05rem; margin: 0 0 .75rem; letter-spacing: .01em; }
h3 { font-size: .95rem; margin: 0 0 .5rem; }
p { margin: .35rem 0; }

/* ---- chrome */
header.top {
  display: flex; gap: 1rem; align-items: center; flex-wrap: wrap;
  padding: .6rem 1.25rem; background: var(--panel); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
header.top .brand { font-weight: 650; letter-spacing: -.01em; }
header.top nav { display: flex; gap: .25rem; flex-wrap: wrap; }
header.top nav a {
  padding: .3rem .6rem; border-radius: 7px; text-decoration: none; color: var(--muted); font-size: .9rem;
}
header.top nav a:hover { background: var(--panel-2); color: var(--text); }
header.top nav a.on { background: var(--accent); color: var(--accent-text); }
header.top .right { margin-left: auto; display: flex; gap: .5rem; align-items: center; }
main { max-width: 1180px; margin: 0 auto; padding: 1.25rem; }
.sub { color: var(--muted); font-size: .88rem; }

/* ---- surfaces */
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1rem; box-shadow: var(--shadow);
}
.grid { display: grid; gap: .9rem; }
.grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.row { display: flex; gap: .75rem; flex-wrap: wrap; align-items: flex-end; }
.spread { display: flex; justify-content: space-between; align-items: center; gap: .75rem; }
.stack > * + * { margin-top: .9rem; }

/* ---- stats */
.stat .label { color: var(--muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; }
.stat .value { font-size: 1.5rem; font-weight: 640; font-variant-numeric: tabular-nums; }
.stat .value.big { font-size: 2.6rem; line-height: 1.1; }
.stat .hint { color: var(--muted); font-size: .82rem; }

/* ---- chips */
.chip {
  display: inline-block; padding: .1rem .5rem; border-radius: 999px;
  font-size: .75rem; font-weight: 600; text-transform: lowercase;
}
.chip.weak { background: var(--weak-bg); color: var(--weak); }
.chip.developing { background: var(--developing-bg); color: var(--developing); }
.chip.strong { background: var(--strong-bg); color: var(--strong); }
.chip.flat { background: var(--panel-2); color: var(--muted); }

/* ---- forms */
label { display: block; font-size: .82rem; color: var(--muted); margin-bottom: .2rem; }
input, select, textarea {
  width: 100%; padding: .45rem .6rem; border: 1px solid var(--border); border-radius: 8px;
  background: var(--panel); color: var(--text); font: inherit; font-size: .92rem;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
textarea { min-height: 4.5rem; resize: vertical; }
.field { min-width: 9rem; flex: 1 1 9rem; }
.field.wide { flex: 1 1 100%; }
button, .btn {
  padding: .45rem .9rem; border-radius: 8px; border: 1px solid var(--accent);
  background: var(--accent); color: var(--accent-text); font: inherit; font-weight: 600;
  font-size: .9rem; cursor: pointer; text-decoration: none; display: inline-block;
}
button.ghost, .btn.ghost { background: transparent; color: var(--text); border-color: var(--border); }
button:disabled { opacity: .6; cursor: progress; }
.inline-form { display: inline; }

/* ---- tables */
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { text-align: left; padding: .45rem .5rem; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-size: .76rem; text-transform: uppercase; letter-spacing: .04em; font-weight: 600; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tr.clickable { cursor: pointer; }
tr.clickable:hover td { background: var(--panel-2); }
tr.on td { background: var(--panel-2); }
tr.surprise td { background: var(--weak-bg); }

/* ---- misc */
.notice { padding: .6rem .8rem; border-radius: 8px; background: var(--panel-2); font-size: .9rem; }
.notice.bad { background: var(--weak-bg); color: var(--weak); }
.notice.good { background: var(--strong-bg); color: var(--strong); }
.list { list-style: none; margin: 0; padding: 0; }
.list > li + li { margin-top: .6rem; border-top: 1px solid var(--border); padding-top: .6rem; }
.mono { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: .85em; }
.chart-wrap { position: relative; height: 320px; }
.muted { color: var(--muted); }
.panel-split { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: .9rem; align-items: start; }
.scroll-y { max-height: 70vh; overflow-y: auto; }

@media (max-width: 880px) {
  .grid.cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid.cols-3, .grid.cols-2, .panel-split { grid-template-columns: minmax(0, 1fr); }
  main { padding: .9rem; }
  .stat .value.big { font-size: 2.1rem; }
}