:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --text: #16202a;
  --muted: #5f6b76;
  --line: #dfe4e8;
  --accent: #0f766e;
  --accent-text: #ffffff;
  --good: #15803d;
  --warn: #b45309;
  --bad: #b91c1c;
  --chip: #eef2f4;
  --radius: 12px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1418;
    --card: #172026;
    --text: #e6edf2;
    --muted: #93a1ac;
    --line: #2a363e;
    --accent: #14b8a6;
    --accent-text: #04201d;
    --good: #4ade80;
    --warn: #fbbf24;
    --bad: #f87171;
    --chip: #22303a;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); }
body { font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; -webkit-text-size-adjust: 100%; }
a { color: var(--accent); }
h1 { font-size: 20px; margin: 0; }
h2 { font-size: 17px; margin: 0 0 10px; }
h3 { font-size: 14px; margin: 14px 0 6px; color: var(--muted); text-transform: uppercase; letter-spacing: .03em; }
.pad { padding: 16px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.good { color: var(--good); } .warn { color: var(--warn); } .bad { color: var(--bad); }

header.top {
  position: sticky; top: 0; z-index: 5; background: var(--card); border-bottom: 1px solid var(--line);
  display: flex; align-items: center; gap: 12px; padding: 10px 16px; flex-wrap: wrap;
}
header.top .brand { font-weight: 700; display: flex; align-items: center; gap: 8px; text-decoration: none; color: var(--text); }
nav.tabs { display: flex; gap: 4px; flex: 1; overflow-x: auto; }
nav.tabs a { padding: 6px 10px; border-radius: 8px; text-decoration: none; color: var(--muted); white-space: nowrap; }
nav.tabs a.on { background: var(--chip); color: var(--text); font-weight: 600; }
main { max-width: 1280px; margin: 0 auto; padding: 16px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 40px; padding: 8px 14px;
  border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: var(--text);
  font: inherit; cursor: pointer; text-decoration: none;
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 600; }
.btn.danger { color: var(--bad); }
.btn.sm { min-height: 32px; padding: 4px 10px; font-size: 13px; }
.btn:disabled { opacity: .5; cursor: default; }
.btn:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.spacer { flex: 1; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; }
.stack > * + * { margin-top: 12px; }
.grid { display: grid; gap: 12px; }
.tiles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 16px; }
.tile { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px; }
.tile b { display: block; font-size: 20px; }
.tile span { color: var(--muted); font-size: 13px; }

.board { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; align-items: start; }
.col { background: var(--chip); border-radius: var(--radius); padding: 10px; min-height: 120px; }
.col > h2 { display: flex; justify-content: space-between; font-size: 15px; }
.seg.colpick { display: none; }
.ocard { display: block; background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 10px; margin-bottom: 8px; color: var(--text); text-decoration: none; }
.ocard:hover { border-color: var(--accent); }
.ocard .t { font-weight: 600; margin-bottom: 4px; }
.chip { display: inline-block; padding: 1px 8px; border-radius: 999px; background: var(--chip); font-size: 12px; color: var(--muted); }
.chip.st-new { background: #dbeafe; color: #1e3a8a; }
.chip.st-estimating, .chip.st-proposal { background: #fef3c7; color: #78350f; }
.chip.st-in_progress { background: #ccfbf1; color: #134e4a; }
.chip.st-done { background: #dcfce7; color: #14532d; }
.chip.st-rejected { background: #fee2e2; color: #7f1d1d; }
.empty { color: var(--muted); font-size: 13px; padding: 8px 4px; }
.chip.dec-TAKE { background: #dcfce7; color: #14532d; }
.chip.dec-CLARIFY { background: #fef3c7; color: #78350f; }
.chip.dec-SKIP { background: var(--chip); color: var(--muted); }
.chip.dec-RISK { background: #fee2e2; color: #7f1d1d; }
.score { flex: none; min-width: 38px; height: 28px; padding: 0 6px; border-radius: 8px; display: inline-flex; align-items: center; justify-content: center; font-weight: 700; font-variant-numeric: tabular-nums; }
.score.hi { background: #dcfce7; color: #14532d; }
.score.mid { background: #fef3c7; color: #78350f; }
.score.lo { background: var(--chip); color: var(--muted); }
.funnel { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.funnel .tile { padding: 8px; }
.funnel .tile b { font-size: 18px; }
@media (max-width: 600px) { .funnel { grid-template-columns: repeat(3, 1fr); } }
.radar-top { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.radar-tabs { overflow-x: auto; }
.radar-tabs button { white-space: nowrap; }
.origtext { white-space: pre-wrap; overflow-wrap: anywhere; font-size: 14px; background: var(--chip); border-radius: 8px; padding: 10px; max-height: 360px; overflow-y: auto; }
details summary { cursor: pointer; }
ul { margin: 0; padding-left: 20px; font-size: 14px; }

label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
input, select, textarea {
  width: 100%; min-height: 40px; padding: 8px 10px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--card); color: var(--text); font: inherit;
}
textarea { min-height: 110px; resize: vertical; }
textarea.tall { min-height: 220px; font-family: ui-monospace, Consolas, monospace; font-size: 13px; }
.fields { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 10px; }
.fields .wide { grid-column: 1 / -1; }

.layout2 { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 16px; align-items: start; }
.calc { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; font-size: 14px; }
.calc .v { text-align: right; font-variant-numeric: tabular-nums; }
.notice { border-left: 3px solid var(--warn); padding: 6px 10px; background: var(--chip); border-radius: 6px; font-size: 13px; }
.check { display: flex; gap: 10px; align-items: flex-start; padding: 6px 0; }
.check input { width: 20px; min-height: 20px; height: 20px; margin-top: 2px; flex: none; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
td, th { padding: 8px 6px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.seg { display: flex; gap: 4px; background: var(--chip); padding: 4px; border-radius: 10px; margin-bottom: 12px; }
.seg button { flex: 1; border: 0; background: transparent; color: var(--muted); padding: 8px; border-radius: 8px; font: inherit; cursor: pointer; }
.seg button.on { background: var(--card); color: var(--text); font-weight: 600; }
.login { max-width: 380px; margin: 10vh auto; }
#toast { position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%); background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 10px; max-width: calc(100% - 32px); z-index: 20; }
.tablewrap { overflow-x: auto; }

@media (max-width: 900px) {
  .tiles { grid-template-columns: repeat(2, 1fr); }
  .board { grid-template-columns: 1fr; }
  .board .col { display: none; }
  .board .col.on { display: block; }
  .seg.colpick { display: flex; }
  .layout2 { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  main { padding: 12px; }
  header.top { padding: 8px 12px; }
  header.top .brand { flex: 1; }
  nav.tabs { order: 3; flex-basis: 100%; }
  nav.tabs a { flex: 1 0 auto; text-align: center; padding: 6px 5px; font-size: 13px; }
  .seg button { padding: 8px 2px; font-size: 13px; }
  .tile b { font-size: 17px; }
}