:root {
  --ink: #1d1f22;
  --ink-soft: #5c626b;
  --line: #dfe1e4;
  --bg: #f6f7f8;
  --card: #ffffff;
  --navy: #1f3a5f;
  --yes: #2e7d5b;
  --no: #c0563f;
  --maybe: #8a8f98;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Zen Kaku Gothic New", system-ui, "Hiragino Sans", "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.75;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 20px 64px;
}

a { color: var(--navy); }

/* ---- ヘッダー ---- */
.site-head {
  background: var(--navy);
  padding: 14px 20px;
}
.site-name {
  color: #fff;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: .04em;
  text-decoration: none;
}

.admin-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #eceef0;
  border: 1px solid var(--line);
  padding: 8px 14px;
  font-size: 14px;
  margin-bottom: 20px;
}

/* ---- 見出し ---- */
.page-title {
  font-size: 22px;
  font-weight: 700;
  margin: 8px 0 20px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--navy);
}
.page-title.sub {
  margin-top: 48px;
  font-size: 18px;
  border-bottom-width: 1px;
  border-bottom-color: var(--line);
}

/* ---- 予定の一覧 ---- */
.event-list { list-style: none; margin: 0; padding: 0; }

.event-card { margin-bottom: 12px; }
.event-card a {
  display: flex;
  gap: 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 5px solid var(--navy);
  padding: 16px;
  text-decoration: none;
  color: inherit;
}
.event-card a:hover { border-left-color: var(--yes); }

.event-date {
  flex: 0 0 52px;
  text-align: center;
  line-height: 1.2;
  padding-top: 4px;
}
.event-date .d {
  display: block;
  font-size: 30px;
  font-weight: 700;
  color: var(--navy);
}
.event-date .m { font-size: 13px; color: var(--ink-soft); }

.event-body { min-width: 0; }
.event-body h2 { font-size: 17px; margin: 2px 0 4px; }

.event-kind {
  display: inline-block;
  font-size: 12px;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  padding: 0 8px;
  margin: 0;
  line-height: 1.8;
}

.event-meta { font-size: 14px; color: var(--ink-soft); margin: 0; }
.event-status { margin: 6px 0 0; font-size: 13px; }

.tag {
  display: inline-block;
  background: #eef1f5;
  color: var(--navy);
  padding: 1px 10px;
  margin-right: 8px;
}
.tag-urgent { background: var(--no); color: #fff; }
.tag-closed { background: #e6e8ea; color: var(--ink-soft); }
.count { color: var(--ink-soft); }

/* ---- 終わった予定 ---- */
.past-list, .plain { list-style: none; margin: 0; padding: 0; }
.past-list li { border-bottom: 1px solid var(--line); }
.past-list a {
  display: flex;
  gap: 14px;
  padding: 10px 2px;
  text-decoration: none;
  color: inherit;
}
.past-list a:hover { background: #eef1f5; }
.past-date { color: var(--ink-soft); font-size: 14px; flex: 0 0 84px; }

/* ---- 詳細 ---- */
.detail {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 20px;
}
.detail h1 { font-size: 21px; margin: 4px 0 16px; }

.detail-meta { display: grid; grid-template-columns: 84px 1fr; gap: 4px 12px; margin: 0; }
.detail-meta dt { color: var(--ink-soft); font-size: 14px; }
.detail-meta dd { margin: 0; }

.detail-text {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

/* ---- フォーム ---- */
.vote, .results { margin-top: 32px; }
.vote h2, .results h2 { font-size: 18px; margin: 0 0 12px; }

form label { display: block; margin-bottom: 16px; font-size: 14px; color: var(--ink-soft); }
form .row { display: flex; gap: 12px; }
form .row label { flex: 1; }

input[type="text"], input[type="password"], input[type="date"],
input[type="time"], select, textarea {
  display: block;
  width: 100%;
  margin-top: 4px;
  padding: 10px;
  border: 1px solid #c8ccd1;
  background: #fff;
  color: var(--ink);
  font-family: inherit;
  font-size: 16px;
}
textarea { resize: vertical; }
.hint { display: block; font-size: 12px; margin-top: 4px; }

fieldset.answers {
  border: none;
  padding: 0;
  margin: 0 0 16px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
fieldset.answers legend { font-size: 14px; color: var(--ink-soft); padding: 0; margin-bottom: 4px; }

.answer {
  margin: 0;
  border: 1px solid #c8ccd1;
  background: #fff;
  padding: 10px 18px;
  cursor: pointer;
  color: var(--ink);
}
.answer input { margin-right: 6px; }
.answer:has(input:checked) { border-color: var(--navy); background: #eef1f5; font-weight: 500; }
.answer-yes:has(input:checked)   { border-color: var(--yes); background: #ecf5f0; }
.answer-no:has(input:checked)    { border-color: var(--no);  background: #fbeeea; }
.answer-maybe:has(input:checked) { border-color: var(--maybe); background: #f0f1f3; }

button, .button {
  display: inline-block;
  background: var(--navy);
  color: #fff;
  border: none;
  padding: 12px 28px;
  font-family: inherit;
  font-size: 16px;
  cursor: pointer;
  text-decoration: none;
}
button:hover, .button:hover { background: #16304f; }

.link-button {
  background: none;
  color: var(--no);
  padding: 0;
  font-size: 14px;
  text-decoration: underline;
}
.link-button:hover { background: none; }

:focus-visible { outline: 2px solid var(--navy); outline-offset: 2px; }

.narrow { max-width: 420px; }
form.inline { display: inline; }

/* ---- 集計 ---- */
.result-group { margin-bottom: 20px; }
.result-group h3 { font-size: 15px; margin: 0 0 6px; }
.result-group ul { list-style: none; margin: 0; padding: 0; }
.result-group li { padding: 4px 0; border-bottom: 1px solid var(--line); }

.dot {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  margin-right: 7px;
  vertical-align: 1px;
}
.dot-yes   { background: var(--yes); }
.dot-no    { background: var(--no); }
.dot-maybe { background: var(--maybe); }

.who { color: var(--ink-soft); font-size: 13px; margin-left: 8px; }
.note { color: var(--ink-soft); font-size: 13px; margin-left: 8px; }
.summary { font-size: 17px; }

/* ---- 表 ---- */
.admin-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  font-size: 14px;
}
.admin-table th, .admin-table td {
  border: 1px solid var(--line);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
}
.admin-table th { background: #eef1f5; font-weight: 500; }
.admin-table td a { margin-right: 10px; }
.nowrap { white-space: nowrap; }

/* ---- お知らせ・エラー ---- */
.notice {
  background: #ecf5f0;
  border-left: 4px solid var(--yes);
  padding: 12px 16px;
  margin: 20px 0;
}
.notice.closed { background: #f0f1f3; border-left-color: var(--maybe); }

.errors {
  background: #fbeeea;
  border-left: 4px solid var(--no);
  padding: 12px 16px 12px 32px;
  margin: 20px 0;
}

.empty { color: var(--ink-soft); }
.small { font-size: 13px; color: var(--ink-soft); }
.back { margin: 24px 0 0; font-size: 14px; }
.admin-link { margin-top: 48px; font-size: 13px; }
.admin-link a { color: var(--ink-soft); }

@media (max-width: 520px) {
  main { padding: 20px 14px 48px; }
  .detail-meta { grid-template-columns: 70px 1fr; }
  .admin-table { display: block; overflow-x: auto; }
}