:root {
  color-scheme: light dark;
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-2: #f0f1f4;
  --fg: #1a1c22;
  --fg-muted: #6b7280;
  --border: #e2e4e9;
  --border-strong: #cbd0da;
  --accent: #3a6df0;
  --accent-fg: #ffffff;
  --accent-soft: #e8eefe;
  --good: #17803d;
  --good-soft: #e5f6ea;
  --warn: #a15c00;
  --warn-soft: #fff3cd;
  --bad: #b3261e;
  --bad-soft: #fde8e7;
  --shadow: 0 1px 2px rgba(20, 20, 30, 0.05), 0 4px 12px rgba(20, 20, 30, 0.04);
  --radius: 12px;
  --radius-sm: 8px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #101216;
    --surface: #181b21;
    --surface-2: #1f232b;
    --fg: #eceef2;
    --fg-muted: #9299a6;
    --border: #2a2e37;
    --border-strong: #3a3f4b;
    --accent: #6d93ff;
    --accent-fg: #0d1117;
    --accent-soft: #1c2740;
    --good: #4ade80;
    --good-soft: #142a1c;
    --warn: #f5b942;
    --warn-soft: #332707;
    --bad: #f87171;
    --bad-soft: #331616;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 6px 16px rgba(0, 0, 0, 0.25);
  }
}
:root[data-theme="dark"] {
  --bg: #101216;
  --surface: #181b21;
  --surface-2: #1f232b;
  --fg: #eceef2;
  --fg-muted: #9299a6;
  --border: #2a2e37;
  --border-strong: #3a3f4b;
  --accent: #6d93ff;
  --accent-fg: #0d1117;
  --accent-soft: #1c2740;
  --good: #4ade80;
  --good-soft: #142a1c;
  --warn: #f5b942;
  --warn-soft: #332707;
  --bad: #f87171;
  --bad-soft: #331616;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 6px 16px rgba(0, 0, 0, 0.25);
}

* { box-sizing: border-box; -webkit-touch-callout: none; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Segoe UI", sans-serif;
  margin: 0;
  padding: 24px 16px 64px;
}

main, header {
  max-width: 880px;
  margin-inline: auto;
}

header {
  padding-bottom: 20px;
  margin-bottom: 8px;
}
header h1 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}
header .sub {
  color: var(--fg-muted);
  font-size: 0.9rem;
  margin: 0;
  line-height: 1.6;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 18px;
}
.card > .card-body { overflow-x: auto; }

.step-connector {
  width: 0;
  height: 0;
  margin: -10px auto 8px;
  border-left: 7px solid transparent;
  border-right: 7px solid transparent;
  border-top: 9px solid var(--border-strong);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.card-header .step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
}
.card-header h2 {
  font-size: 1rem;
  font-weight: 700;
  margin: 0;
}
.card-header .hint {
  margin-left: auto;
  font-size: 0.78rem;
  color: var(--fg-muted);
}
.hint-text {
  margin: -8px 0 14px;
  font-size: 0.8rem;
  color: var(--fg-muted);
  line-height: 1.5;
}
#criterion-desc {
  margin: 10px 0 0;
  font-size: 0.8rem;
  color: var(--fg-muted);
  line-height: 1.5;
}

.field-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px;
}
.field-narrow { max-width: max-content; white-space: nowrap; }
.field-narrow input { width: 140px; }
label {
  display: flex;
  flex-direction: column;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--fg-muted);
  gap: 6px;
}
label.inline-select {
  flex-direction: row;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
}

input, select {
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--surface-2);
  color: var(--fg);
  font-size: 0.92rem;
  font-family: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
}
input:hover, select:hover { border-color: var(--accent); }
input:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
input::placeholder { color: var(--fg-muted); }

select#criterion { width: 100%; }

/* --- 目標一覧テーブル --- */
table {
  border-collapse: collapse;
  width: 100%;
  min-width: 480px;
}
thead th {
  background: var(--surface-2);
  color: var(--fg-muted);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  border-bottom: 2px solid var(--border);
  padding: 10px 8px;
}
td {
  border-bottom: 1px solid var(--border);
  padding: 8px;
  font-size: 0.88rem;
  vertical-align: middle;
}
th, td { text-align: right; user-select: none; -webkit-user-select: none; }
th:first-child, td:first-child { text-align: left; }
tbody tr:hover { background: var(--surface-2); }
#goals-table select { min-width: 64px; }
#goals-table td:last-child { text-align: center; }

/* --- ボタン --- */
button {
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--fg);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, transform 0.05s, box-shadow 0.15s;
}
button:hover { background: var(--surface-2); }
button:active { transform: translateY(1px); }

#add-goal { margin-top: 12px; color: var(--accent); border-color: var(--accent-soft); background: var(--accent-soft); }
#add-goal:hover { background: var(--accent-soft); filter: brightness(1.05); }

.g-remove {
  border: none;
  background: transparent;
  color: var(--bad);
  padding: 4px 10px;
  font-size: 0.8rem;
}
.g-remove:hover { background: var(--bad-soft); }

button.primary {
  background: var(--accent);
  color: var(--accent-fg);
  border: none;
  font-size: 0.98rem;
  font-weight: 700;
  padding: 13px 28px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  display: block;
  margin: 4px auto 24px;
  min-width: 220px;
}
button.primary:hover { filter: brightness(1.06); }

/* --- 警告 --- */
.warnings[hidden] { display: none; }
.warnings {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  background: var(--warn-soft);
  color: var(--warn);
  border: 1px solid var(--warn);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  margin-bottom: 18px;
  font-size: 0.85rem;
  line-height: 1.6;
}
.warnings::before { content: "⚠️"; font-size: 1rem; }

/* --- 推奨結果 --- */
#recommend {
  background: linear-gradient(160deg, var(--accent-soft), var(--surface) 70%);
  border-color: var(--accent);
}
.recommend-headline {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.01em;
}
.recommend-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
  background: var(--surface-2);
  color: var(--fg);
}
.badge.good { background: var(--good-soft); color: var(--good); }
.badge.warn { background: var(--warn-soft); color: var(--warn); }
.badge.bad { background: var(--bad-soft); color: var(--bad); }
.pareto-list {
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--fg-muted);
}
.pareto-list .chip {
  display: inline-block;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 2px 10px;
  margin: 2px 4px 2px 0;
  font-size: 0.8rem;
  color: var(--fg);
}

/* --- 比較表 --- */
#comparison-body table { min-width: 640px; }
tr.is-recommended td { background: var(--accent-soft); font-weight: 700; }
tr.is-recommended td:first-child::after { content: " ★"; color: var(--accent); }

@media (max-width: 600px) {
  body { padding: 16px 10px 48px; }
  .card { padding: 14px; border-radius: var(--radius-sm); }
  header h1 { font-size: 1.25rem; }
  button.primary { width: 100%; }
}