:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #1b1f24;
  --muted: #5f6b7a;
  --line: #e2e6eb;
  --accent: #2456d6;
  --accent-text: #ffffff;
  --plus: #2a7de1;
  --minus: #d9534f;
  --ok-bg: #e8f3ec;
  --ok-text: #1e6b3a;
  --err-bg: #fbeaea;
  --err-text: #9b2c2c;
  --radius: 12px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111418;
    --surface: #1a1f25;
    --text: #e8ecf1;
    --muted: #9aa6b4;
    --line: #2c333c;
    --accent: #6d97ff;
    --accent-text: #0d1117;
    --plus: #5ea2ff;
    --minus: #ff7a73;
    --ok-bg: #16301f;
    --ok-text: #8fd9a8;
    --err-bg: #3a1d1d;
    --err-text: #ffb4b0;
  }
}
:root[data-theme="dark"] {
  --bg: #111418; --surface: #1a1f25; --text: #e8ecf1; --muted: #9aa6b4; --line: #2c333c;
  --accent: #6d97ff; --accent-text: #0d1117; --plus: #5ea2ff; --minus: #ff7a73;
  --ok-bg: #16301f; --ok-text: #8fd9a8; --err-bg: #3a1d1d; --err-text: #ffb4b0;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif;
  line-height: 1.7;
}
a { color: var(--accent); }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }

.top { background: var(--surface); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.top-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 56px; flex-wrap: wrap; }
.brand { font-weight: 700; font-size: 1.15rem; color: var(--text); text-decoration: none; display: inline-flex; align-items: center; gap: 8px; }
.brand img { width: 32px; height: 32px; border-radius: 50%; }
#nav { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; font-size: .92rem; }
#nav a { text-decoration: none; }
.chip { background: var(--bg); border: 1px solid var(--line); border-radius: 999px; padding: 2px 10px; font-variant-numeric: tabular-nums; }

main { padding: 24px 16px 40px; }
h1 { font-size: 1.5rem; margin: 0 0 8px; line-height: 1.4; }
h2 { font-size: 1.1rem; margin: 28px 0 10px; }
.muted { color: var(--muted); }
.small { font-size: .88rem; }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; margin: 12px 0; }
.poll-link { display: block; color: inherit; text-decoration: none; }
.poll-link:hover { border-color: var(--accent); }
.row { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.badge { font-size: .78rem; border-radius: 6px; padding: 1px 8px; border: 1px solid var(--line); white-space: nowrap; }
.badge.open { background: var(--ok-bg); color: var(--ok-text); border-color: transparent; }

form { display: grid; gap: 14px; }
label { display: grid; gap: 4px; font-weight: 600; font-size: .95rem; }
label .hint { font-weight: 400; color: var(--muted); font-size: .85rem; }
input, select, textarea {
  font: inherit; color: var(--text); background: var(--surface);
  border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; width: 100%;
}
textarea { min-height: 90px; }
fieldset { border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; margin: 0; }
legend { font-weight: 600; font-size: .95rem; padding: 0 4px; }
.choice { display: flex; align-items: center; gap: 8px; font-weight: 400; padding: 6px 0; cursor: pointer; }
.choice input { width: auto; }

button, .btn {
  font: inherit; font-weight: 600; border: 0; border-radius: 8px; padding: 11px 18px; cursor: pointer;
  background: var(--accent); color: var(--accent-text); text-decoration: none; display: inline-block; text-align: center;
}
button.ghost { background: transparent; color: var(--accent); border: 1px solid var(--line); }
button.danger { background: transparent; color: var(--minus); border: 1px solid var(--line); }
button:disabled { opacity: .5; cursor: not-allowed; }
.linkish { background: none; border: 0; padding: 0; color: var(--accent); font-weight: 400; cursor: pointer; }

.msg { border-radius: 8px; padding: 10px 12px; margin: 10px 0; }
.msg.err { background: var(--err-bg); color: var(--err-text); }
.msg.ok { background: var(--ok-bg); color: var(--ok-text); }

/* 票数スライダー */
.weight { display: grid; gap: 6px; }
.weight output { font-size: 1.25rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.weight output.plus { color: var(--plus); }
.weight output.minus { color: var(--minus); }
input[type="range"] { padding: 0; accent-color: var(--accent); }

/* 結果のバー（中央 0 から左右に伸びる） */
.bars { display: grid; gap: 14px; }
.bar-row .row { font-size: .95rem; }
.bar-row .net { font-weight: 700; font-variant-numeric: tabular-nums; }
.track { position: relative; height: 14px; display: grid; grid-template-columns: 1fr 1fr; gap: 2px; margin-top: 4px; }
.track > div { background: var(--bg); border-radius: 4px; position: relative; overflow: hidden; }
.track .neg span { position: absolute; right: 0; top: 0; bottom: 0; background: var(--minus); border-radius: 4px 0 0 4px; }
.track .pos span { position: absolute; left: 0; top: 0; bottom: 0; background: var(--plus); border-radius: 0 4px 4px 0; }
.legend { display: flex; gap: 14px; font-size: .85rem; color: var(--muted); }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 4px; vertical-align: -1px; }

.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 10px; }
.tabs button { background: transparent; color: var(--text); border: 1px solid var(--line); padding: 6px 12px; font-weight: 500; }
.tabs button[aria-pressed="true"] { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }

.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: .9rem; font-variant-numeric: tabular-nums; }
th, td { border-bottom: 1px solid var(--line); padding: 8px 6px; text-align: right; white-space: nowrap; }
th:first-child, td:first-child { text-align: left; }
td.p { color: var(--plus); }
td.m { color: var(--minus); }
.live { display: inline-flex; align-items: center; gap: 6px; font-size: .82rem; color: var(--muted); }
.live::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--ok-text); animation: blink 2s infinite; }
@keyframes blink { 50% { opacity: .25; } }
@media (prefers-reduced-motion: reduce) { .live::before { animation: none; } }

.foot { color: var(--muted); font-size: .85rem; padding-bottom: 32px; }

/* スマホ幅では属性別の表を詰めて、選択肢 3 つ程度なら横スクロールなしで収める */
@media (max-width: 480px) {
  table { font-size: .82rem; }
  th, td { padding: 7px 4px; }
  th { white-space: normal; vertical-align: bottom; }
  td:first-child { white-space: normal; }
}

/* フッター（サイトの説明・リンク） */
.foot .about { border-top: 1px solid var(--line); padding-top: 8px; }
.foot .about h2 { font-size: .95rem; margin: 12px 0 4px; color: var(--text); }
.foot .links a { color: var(--muted); }

/* 広告枠 */
.ad { margin: 24px 0; text-align: center; min-height: 100px; }
.ad::before { content: "広告"; display: block; font-size: .72rem; color: var(--muted); margin-bottom: 4px; }
.ad:empty, .ad[hidden] { display: none; }

/* LINE ログインのボタン（LINE のブランドカラー） */
.btn-line { background: #06C755; color: #fff; display: block; font-size: 1.05rem; padding: 13px 18px; }
.btn-line:hover { background: #05b34c; }
details.card summary { cursor: pointer; font-weight: 600; }
.ts:empty { display: none; }
.msg { white-space: pre-line; }