:root {
    --kudos: #005781;
    --kudos-dark: #003e5c;
    --kudos-pale: #eaf5f8;
    --accent: #ffdd59;
    --text: #24343d;
    --muted: #677781;
    --line: #dbe4e8;
    --available: #16865b;
    --available-bg: #e7f7ef;
    --unavailable: #717b81;
    --unavailable-bg: #edf0f2;
    --limited: #a96200;
    --limited-bg: #fff2d5;
    --closed: #7b4d58;
    --closed-bg: #f5e9ec;
    --shadow: 0 12px 34px rgba(0, 60, 88, 0.12);
  }

  * { box-sizing: border-box; }

  body {
    margin: 0;
    color: var(--text);
    background: #f4f8fa;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP",
      "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
    line-height: 1.6;
  }

  button, input { font: inherit; }

  .hero {
    background:
      radial-gradient(circle at 88% 18%, rgba(255, 221, 89, 0.23), transparent 23%),
      linear-gradient(135deg, var(--kudos-dark), var(--kudos));
    color: #fff;
    padding: 42px 20px 64px;
  }

  .hero-inner, .page { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }

  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 9px;
    color: #d8f1f7;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .08em;
  }

  .eyebrow::before {
    content: "";
    width: 24px;
    height: 3px;
    border-radius: 99px;
    background: var(--accent);
  }

  h1 { margin: 0; font-size: clamp(28px, 4vw, 42px); line-height: 1.25; }
  .hero p { max-width: 720px; margin: 14px 0 0; color: #e4f2f6; }

  .page { margin-top: -34px; padding-bottom: 52px; }

  .panel {
    overflow: hidden;
    border: 1px solid rgba(0, 87, 129, .08);
    border-radius: 20px;
    background: #fff;
    box-shadow: var(--shadow);
  }

  .toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 22px 24px 16px;
  }

  .toolbar-title { margin: 0; color: var(--kudos); font-size: 20px; }

  .updated {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--muted);
    font-size: 13px;
  }

  .refresh-btn {
    display: inline-grid;
    width: 34px;
    height: 34px;
    padding: 0;
    place-items: center;
    border: 1px solid var(--line);
    border-radius: 50%;
    color: var(--kudos);
    background: #fff;
    cursor: pointer;
    transition: .2s ease;
  }

  .refresh-btn:hover { transform: rotate(45deg); background: var(--kudos-pale); }
  .refresh-btn:disabled { cursor: wait; opacity: .55; }

  .date-tabs {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding: 0 24px 18px;
    scrollbar-width: none;
  }
  .date-tabs::-webkit-scrollbar { display: none; }

  .date-tab {
    flex: 0 0 102px;
    min-height: 64px;
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: 12px;
    color: var(--text);
    background: #fff;
    cursor: pointer;
    transition: .18s ease;
  }

  .date-tab:hover { border-color: var(--kudos); background: var(--kudos-pale); }
  .date-tab.active { border-color: var(--kudos); color: #fff; background: var(--kudos); }
  .date-tab .date { display: block; font-size: 16px; font-weight: 800; }
  .date-tab .day { display: block; font-size: 12px; opacity: .82; }
  .date-tab .today { color: var(--accent); font-weight: 800; }

  .day-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin: 0 24px 16px;
    padding: 12px 16px;
    border-radius: 12px;
    background: var(--kudos-pale);
  }

  .day-summary strong { color: var(--kudos); }
  .open-status { color: var(--muted); font-size: 14px; text-align: right; }

  .search-wrap { padding: 0 24px 16px; }
  .search-box {
    width: min(360px, 100%);
    padding: 10px 14px;
    border: 1px solid var(--line);
    border-radius: 10px;
    outline: none;
  }
  .search-box:focus { border-color: var(--kudos); box-shadow: 0 0 0 3px rgba(0, 87, 129, .1); }

  .table-scroll { overflow-x: auto; border-top: 1px solid var(--line); }
  table { width: 100%; min-width: 900px; border-collapse: separate; border-spacing: 0; }
  th, td { padding: 13px 10px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); text-align: center; }
  th:last-child, td:last-child { border-right: 0; }
  tbody tr:last-child td { border-bottom: 0; }
  tbody tr:hover td { background-color: #f9fbfc; }

  thead th {
    color: #fff;
    background: var(--kudos);
    font-size: 13px;
    font-weight: 700;
  }

  thead th small { display: block; color: #d4ebf1; font-size: 10px; font-weight: 500; }

  .software-cell {
    position: sticky;
    left: 0;
    z-index: 2;
    width: 210px;
    min-width: 210px;
    padding-left: 18px;
    text-align: left;
    background: #fff;
    box-shadow: 7px 0 12px rgba(0, 42, 62, .04);
  }

  thead .software-cell { z-index: 3; background: var(--kudos-dark); }
  .software-name { display: block; font-weight: 750; line-height: 1.35; }
  .software-version { display: block; margin-top: 3px; color: var(--muted); font-size: 11px; }

  .status {
    display: inline-flex;
    min-width: 48px;
    min-height: 34px;
    padding: 4px 9px;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    font-weight: 800;
    white-space: nowrap;
  }
  .status.available { color: var(--available); background: var(--available-bg); }
  .status.unavailable { color: var(--unavailable); background: var(--unavailable-bg); }
  .status.limited { color: var(--limited); background: var(--limited-bg); font-size: 12px; }
  .status.closed { color: var(--closed); background: var(--closed-bg); font-size: 12px; }
  .status.other { color: var(--text); background: #f3f5f6; font-size: 12px; }

  .empty, .error { padding: 60px 24px; text-align: center; color: var(--muted); }
  .error { color: #9b3140; }

  .loading { padding: 62px 24px; text-align: center; color: var(--kudos); }
  .spinner {
    width: 34px;
    height: 34px;
    margin: 0 auto 12px;
    border: 4px solid #dcecef;
    border-top-color: var(--kudos);
    border-radius: 50%;
    animation: spin .8s linear infinite;
  }
  @keyframes spin { to { transform: rotate(360deg); } }

  .footer-info {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 20px;
    align-items: center;
    padding: 22px 24px;
    border-top: 1px solid var(--line);
    background: #fbfcfd;
  }

  .legend { display: flex; flex-wrap: wrap; gap: 10px 18px; color: var(--muted); font-size: 13px; }
  .legend-item { display: inline-flex; align-items: center; gap: 6px; }
  .legend .status { min-width: 30px; min-height: 25px; padding: 2px 7px; }
  .notes { margin: 12px 0 0; padding: 0; list-style: none; color: var(--muted); font-size: 12px; }


  @media (max-width: 720px) {
    .hero { padding: 30px 16px 56px; }
    .hero-inner, .page { width: min(100% - 20px, 1180px); }
    .toolbar { align-items: flex-start; padding: 18px 16px 14px; }
    .toolbar-title { font-size: 17px; }
    .updated span { display: none; }
    .date-tabs { padding: 0 16px 15px; }
    .date-tab { flex-basis: 86px; min-height: 58px; }
    .day-summary { align-items: flex-start; flex-direction: column; margin: 0 16px 14px; }
    .open-status { text-align: left; }
    .search-wrap { padding: 0 16px 14px; }
    .software-cell { width: 160px; min-width: 160px; }
    th, td { padding: 11px 8px; }
    .footer-info { grid-template-columns: 1fr; padding: 18px 16px; }
    .booking-btn { width: 100%; }
  }

  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; }
  }

  /* 現在時刻に該当する時限を強調 */
/* 現在時刻に該当する列：データ部分だけごく薄い黄色 */
td.current-period {
  background-color: #fffdf0;
}

/* 「○限」の見出しは通常の青色を維持 */
th.current-period {
  background-color: #005781;
  box-shadow: none;
}

/* 「現在」ラベル */
.current-period-label {
  display: inline-block;
  margin-right: 5px;
  padding: 2px 7px;
  border-radius: 999px;
  background-color: #f1b800;
  color: #263238;
  font-size: 11px;
  font-weight: 700;
  line-height: 1.4;
}

/* 日付ボタン：開館・休館 */

.date-tab {
  position: relative;
}

.date-tab-open {
  background: #fff;
}

.date-tab-closed {
  background: #edf0f3;
  color: #737b85;
}

.date-tab-status {
  display: block;
  margin-top: 5px;
  font-size: 11px;
  font-weight: 700;
}

.date-tab-open .date-tab-status {
  color: #24845c;
}

.date-tab-closed .date-tab-status {
  color: #737b85;
}

/* 選択中は開館・休館にかかわらず枠で強調 */
.date-tab.active {
  outline: 2px solid #2875cb;
  outline-offset: -2px;
}
.date-tab-open.active .date-tab-status {
  color: #fff;
}

/* 休館日の日付・時間帯表示 */

.day-summary.is-closed {
  background: #edf0f3;
  color: #66717d;
}

.day-summary.is-closed #selected-date,
.day-summary.is-closed #open-status {
  color: #66717d;
}

/* 空き状況表：縦横スクロール時に見出しを固定（既存CSSの末尾に追加） */
.table-scroll {
  overflow: auto;
  max-height: min(65dvh, 620px);
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  position: relative;
}
/* 縦スクロール時、時限・時間帯の見出しを固定 */
.table-scroll thead th {
  position: sticky;
  top: 0;
  z-index: 4;
  background: var(--kudos);
  background-clip: padding-box;
}
/* 横スクロール時、ソフトウェア名を固定 */
.table-scroll tbody .software-cell {
  position: sticky;
  left: 0;
  z-index: 5;
  background: #fff;
}
/* 左上は縦横どちらのスクロールでも固定 */
.table-scroll thead .software-cell {
  position: sticky;
  top: 0;
  left: 0;
  z-index: 6;
  background: var(--kudos-dark);
}
@media (max-width: 720px) {
  .table-scroll { max-height: 60dvh; }
}