:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --text: #1f2933;
  --muted: #6b7785;
  --line: #e2e6ea;
  --primary: #2f6fdf;
  --primary-weak: #e8f0fd;
  --ok: #1f9d55;
  --ok-weak: #e3f6ea;
  --maybe: #c98a06;
  --maybe-weak: #fdf4dc;
  --ng: #d64545;
  --ng-weak: #fbe6e6;
  --auto: #8a63d2;
  --auto-weak: #efe8fb;
  --radius: 10px;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", "Yu Gothic", sans-serif;
  font-size: 14px; line-height: 1.6;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 17px; margin: 0 0 12px; }
h3 { font-size: 15px; margin: 16px 0 8px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.nowrap { white-space: nowrap; }

header.top {
  background: #1d2733; color: #fff; padding: 0 16px;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap; min-height: 52px;
}
header.top .brand { font-weight: 700; font-size: 16px; color: #fff; }
header.top nav { display: flex; gap: 4px; flex-wrap: wrap; }
header.top nav a { color: #c9d3de; padding: 6px 10px; border-radius: 6px; }
header.top nav a.active, header.top nav a:hover { background: #2e3c4d; color: #fff; text-decoration: none; }
header.top .spacer { flex: 1; }
header.top .user { color: #c9d3de; font-size: 13px; }

main { max-width: 1200px; margin: 0 auto; padding: 20px 16px 40px; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; margin-bottom: 16px; }
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.row.top { align-items: flex-start; }
.grow { flex: 1; min-width: 0; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; display: block; color: inherit; }
.card:hover { border-color: var(--primary); text-decoration: none; }
.card .title { font-weight: 700; font-size: 15px; margin-bottom: 4px; }

label.field { display: block; margin-bottom: 12px; }
label.field > span { display: block; font-size: 12px; color: var(--muted); margin-bottom: 4px; font-weight: 600; }
input[type=text], input[type=email], input[type=password], input[type=number], input[type=date], input[type=time], input[type=datetime-local], select, textarea {
  width: 100%; padding: 8px 10px; border: 1px solid #cdd4db; border-radius: 7px; font: inherit; background: #fff; color: inherit;
}
textarea { min-height: 70px; resize: vertical; }
input.inline, select.inline { width: auto; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--primary-weak); border-color: var(--primary); }

button, .btn {
  display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; border-radius: 7px;
  border: 1px solid #cdd4db; background: #fff; color: var(--text); font: inherit; cursor: pointer; white-space: nowrap;
}
button:hover, .btn:hover { background: #f0f3f6; text-decoration: none; }
button.primary, .btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
button.primary:hover, .btn.primary:hover { background: #255bc0; }
button.danger { color: var(--ng); border-color: #f0c2c2; }
button.danger:hover { background: var(--ng-weak); }
button.small, .btn.small { padding: 3px 9px; font-size: 12px; }
button:disabled { opacity: .5; cursor: not-allowed; }

.badge { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; background: #eef1f4; color: var(--muted); }
.badge.open { background: var(--primary-weak); color: var(--primary); }
.badge.confirmed { background: var(--ok-weak); color: var(--ok); }
.badge.proposal { background: var(--auto-weak); color: var(--auto); }
.badge.unresolved { background: var(--ng-weak); color: var(--ng); }
.badge.cancelled { background: #eef1f4; color: var(--muted); }
.badge.req { background: #fff0e0; color: #b35c00; }

.alert { padding: 10px 14px; border-radius: 8px; margin-bottom: 12px; border: 1px solid; }
.alert.error { background: var(--ng-weak); border-color: #f0c2c2; color: #9b2c2c; }
.alert.info { background: var(--primary-weak); border-color: #c5d8f8; color: #1d4c9c; }
.alert.ok { background: var(--ok-weak); border-color: #b9e5c9; color: #17693b; }
.alert.auto { background: var(--auto-weak); border-color: #d9c9f5; color: #5b3a9b; }

.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; }
th, td { border-bottom: 1px solid var(--line); padding: 7px 8px; text-align: left; vertical-align: middle; }
th { font-size: 12px; color: var(--muted); font-weight: 600; background: #fafbfc; }
table.matrix th, table.matrix td { text-align: center; border: 1px solid var(--line); }
table.matrix th.name, table.matrix td.name { text-align: left; position: sticky; left: 0; background: #fff; z-index: 1; min-width: 150px; }
table.matrix th.name { background: #fafbfc; }
table.matrix .best { background: #fff8d6 !important; }
table.matrix .confirmed-col { background: var(--ok-weak) !important; }
table.matrix .infeasible { color: #aab3bd; }
.cell { display: inline-block; min-width: 30px; padding: 2px 6px; border-radius: 6px; font-weight: 700; }
.cell.v2 { background: var(--ok-weak); color: var(--ok); }
.cell.v1 { background: var(--maybe-weak); color: var(--maybe); }
.cell.v0 { background: var(--ng-weak); color: var(--ng); }
.cell.auto { background: var(--auto-weak); color: var(--auto); text-decoration: line-through; text-decoration-color: rgba(138,99,210,.4); }
.cell.none { color: #b5bdc6; font-weight: 400; }

.choice { display: inline-flex; border: 1px solid #cdd4db; border-radius: 8px; overflow: hidden; }
.choice button { border: 0; border-radius: 0; padding: 6px 16px; font-size: 16px; font-weight: 700; }
.choice button + button { border-left: 1px solid #cdd4db; }
.choice button.on.v2 { background: var(--ok); color: #fff; }
.choice button.on.v1 { background: var(--maybe); color: #fff; }
.choice button.on.v0 { background: var(--ng); color: #fff; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 14px; }
.tabs button { border: 0; border-bottom: 2px solid transparent; border-radius: 0; background: none; padding: 8px 14px; color: var(--muted); }
.tabs button.on { color: var(--primary); border-bottom-color: var(--primary); font-weight: 700; }

.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { display: inline-flex; align-items: center; gap: 6px; background: #eef1f4; border-radius: 999px; padding: 2px 4px 2px 10px; font-size: 13px; }
.chip button { border: 0; background: none; padding: 0 6px; color: var(--muted); }

.strategy { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 8px; }
.strategy label { border: 1px solid var(--line); border-radius: 8px; padding: 10px; cursor: pointer; display: block; }
.strategy label.on { border-color: var(--primary); background: var(--primary-weak); }
.strategy label b { display: block; }

.logs { max-height: 360px; overflow-y: auto; }
.logs div { padding: 6px 0; border-bottom: 1px dashed var(--line); font-size: 13px; }
.logs time { color: var(--muted); font-size: 12px; margin-right: 8px; }

footer.ver { text-align: center; color: #98a2ad; font-size: 11px; padding: 16px; }
footer.ver a { color: #98a2ad; }
.center-box { max-width: 420px; margin: 40px auto; }
.copy-input { font-family: ui-monospace, monospace; font-size: 12px; }
.bar { height: 6px; background: #eef1f4; border-radius: 3px; overflow: hidden; }
.bar > i { display: block; height: 100%; background: var(--primary); }
.conflict-note { color: var(--auto); margin-top: 4px; text-align: right; line-height: 1.4; }