:root {
  --accent: #1f6e43;
  --accent-light: #e8f2ec;
  --border: #d4d9d6;
  --text: #23282b;
  --muted: #667075;
  --warn-bg: #fdeeee;
  --warn: #b3352e;
  --ok-bg: #eaf4ee;
  --bg: #fafbfa;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Hiragino Sans", "Noto Sans JP", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 15px;
}

.site-header {
  background: #fff;
  border-bottom: 2px solid var(--accent);
}
.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0.6rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.site-title {
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
  font-size: 1.02rem;
}
.site-header nav {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  flex-wrap: wrap;
}
.site-header nav a {
  color: var(--text);
  text-decoration: none;
  padding: 0.35rem 0.7rem;
  border-radius: 4px;
}
.site-header nav a:hover { background: var(--accent-light); }
.site-header nav a.active {
  background: var(--accent);
  color: #fff;
}
.lang-btn {
  margin-left: 0.5rem;
  padding: 0.3rem 0.8rem;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.85rem;
}
.lang-btn:hover { background: var(--accent-light); }

.demo-banner {
  background: #fbf6e3;
  border-bottom: 1px solid #e3d9ae;
  font-size: 0.82rem;
  color: #6b5f2a;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  padding: 0.4rem 1rem;
  flex-wrap: wrap;
}
.demo-banner .ghost { padding: 0.15rem 0.7rem; font-size: 0.8rem; }

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem 1rem 4rem;
}

h1 { font-size: 1.35rem; margin: 0.5rem 0 0.3rem; }
h2 { font-size: 1.1rem; margin: 2rem 0 0.5rem; border-left: 4px solid var(--accent); padding-left: 0.6rem; }
.lead { color: var(--muted); margin-top: 0; }

/* トップのカード */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}
.card {
  display: block;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.1rem 1.2rem;
  text-decoration: none;
  color: var(--text);
}
.card:hover { border-color: var(--accent); }
.card strong { color: var(--accent); font-size: 1.05rem; display: block; margin-bottom: 0.3rem; }
.card span { color: var(--muted); font-size: 0.9rem; }

/* フォーム */
form { background: #fff; border: 1px solid var(--border); border-radius: 6px; padding: 1.2rem 1.4rem; }
.field { margin-bottom: 1.1rem; }
.field label.main { display: block; font-weight: 600; margin-bottom: 0.25rem; }
.hint { color: var(--muted); font-size: 0.83rem; margin: 0.15rem 0 0.35rem; }
input[type="text"], input[type="email"], textarea, select {
  width: 100%;
  max-width: 480px;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font: inherit;
  background: #fff;
}
textarea { max-width: 640px; min-height: 4.5em; }
.check-line { display: flex; align-items: baseline; gap: 0.5rem; }

/* 日別の枠選択 */
.day-block {
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 0.8rem;
  background: #fff;
  overflow: hidden;
}
.day-head {
  background: var(--accent-light);
  padding: 0.5rem 0.9rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.3rem;
}
.day-head .d-date { font-weight: 700; }
.day-head .d-venue { color: var(--accent); font-weight: 600; }
.day-head .d-note { color: var(--muted); font-size: 0.82rem; width: 100%; }
.slot-list { display: flex; flex-wrap: wrap; gap: 0.5rem; padding: 0.7rem 0.9rem; }
.slot-check {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.45rem 0.8rem;
  cursor: pointer;
  background: #fff;
  user-select: none;
}
.slot-check:has(input:checked) {
  border-color: var(--accent);
  background: var(--accent-light);
}
.slot-check .s-time { color: var(--muted); font-size: 0.82rem; }

button.primary {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 4px;
  padding: 0.6rem 1.6rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
button.primary:hover { opacity: 0.9; }
button.ghost {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.4rem 0.9rem;
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  color: var(--muted);
}

.msg-ok {
  background: var(--ok-bg);
  border: 1px solid var(--accent);
  border-radius: 4px;
  padding: 0.6rem 0.9rem;
  margin: 1rem 0;
}
.msg-err {
  background: var(--warn-bg);
  border: 1px solid var(--warn);
  border-radius: 4px;
  padding: 0.6rem 0.9rem;
  margin: 1rem 0;
  color: var(--warn);
}

/* テーブル共通 */
.table-wrap { overflow-x: auto; background: #fff; border: 1px solid var(--border); border-radius: 6px; }
table { border-collapse: collapse; width: 100%; font-size: 0.88rem; }
th, td { border: 1px solid var(--border); padding: 0.45rem 0.6rem; text-align: left; vertical-align: top; }
thead th { background: var(--accent-light); white-space: nowrap; }
tbody th { background: #f4f6f5; font-weight: 600; white-space: nowrap; }

/* 管理ボード */
.assign-cell { cursor: pointer; min-width: 7.5em; }
.assign-cell:hover { outline: 2px solid var(--accent); outline-offset: -2px; }
.assign-cell .names { display: flex; flex-direction: column; gap: 0.15rem; }
.assign-cell .cap-tag { font-size: 0.78rem; color: var(--muted); }
.cell-short { background: var(--warn-bg); }
.cell-full { background: var(--ok-bg); }
.cell-over { background: #fff4e0; }
.cell-closed { background: #f0f1f0; color: var(--muted); text-align: center; cursor: default; }
.cell-closed:hover { outline: none; }
.cell-me { background: var(--accent-light); }
.room-th { vertical-align: middle; background: #eef1ef; }
.task-th { font-weight: 600; }
details.duties { font-weight: 400; font-size: 0.8rem; margin-top: 0.2rem; }
details.duties summary { color: var(--accent); cursor: pointer; }
details.duties ul { margin: 0.2rem 0 0.3rem; padding-left: 1.2rem; color: var(--muted); }
.picker-filter { display: block; margin-bottom: 0.4rem; }
.picker-list { width: 100%; max-width: 480px; }
.picker-count { margin-top: 0.25rem; }
.cell-full-lock { background: #f0f1f0; cursor: default; }
.cell-full-lock:hover { outline: none; }

.status-short { color: var(--warn); font-weight: 600; }
.status-ok { color: var(--accent); font-weight: 600; }

/* ダイアログ */
dialog {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.2rem 1.4rem;
  max-width: 420px;
  width: calc(100% - 2rem);
}
dialog::backdrop { background: rgba(0, 0, 0, 0.35); }
dialog h3 { margin-top: 0; font-size: 1rem; }
.cand-list { list-style: none; padding: 0; margin: 0.6rem 0; max-height: 40vh; overflow-y: auto; }
.cand-list li { padding: 0.2rem 0; }
.cand-list label { display: flex; align-items: center; gap: 0.5rem; cursor: pointer; }
.cand-hours { color: var(--muted); font-size: 0.8rem; }

.toolbar { display: flex; justify-content: flex-end; margin: 0.5rem 0; }

footer.site-footer {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem;
  color: var(--muted);
  font-size: 0.78rem;
  border-top: 1px solid var(--border);
}

@media (max-width: 600px) {
  body { font-size: 14px; }
  main { padding: 1rem 0.7rem 3rem; }
  .header-inner { padding: 0.5rem 0.7rem; }
  .slot-list { flex-direction: column; }
  .slot-check { justify-content: flex-start; }
  form { padding: 1rem; }
  th, td { padding: 0.35rem 0.45rem; }
}