/* ============================================================
   桐朋中学校・桐朋高等学校 英語科 施設予約システム
   Design Theme : Deep Purple × Ivory
   ============================================================ */

/* ===== リセット ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ===== デザイントークン ===== */
:root {
  /* 桐朋ネイビー・ブルー */
  --toho-900: #0d1b3e;
  --toho-800: #102554;
  --toho-700: #153070;
  --toho-600: #1a3d8f;
  --toho-500: #2152b3;
  --toho-400: #3b6fd4;
  --toho-300: #7aa3e8;
  --toho-200: #bad0f5;
  --toho-100: #deeafc;
  --toho-50 : #f0f5fd;

  /* アクセント */
  --gold    : #c9a227;
  --gold-lt : #f5e6ab;

  /* ニュートラル */
  --bg      : #f0f4f9;
  --surface : #ffffff;
  --border  : #d8e3f0;
  --text    : #0d1b3e;
  --text-md : #3a537a;
  --text-lt : #7a96bd;

  /* ステータス */
  --success : #15803d;
  --success-lt: #dcfce7;
  --danger  : #c0392b;
  --danger-lt : #fee2e2;
  --warning : #b45309;
  --warning-lt: #fef3c7;

  /* シャドウ */
  --shadow-sm : 0 1px 3px rgba(13,27,62,.10), 0 1px 2px rgba(13,27,62,.06);
  --shadow    : 0 4px 12px rgba(13,27,62,.10);
  --shadow-lg : 0 12px 32px rgba(13,27,62,.15);
  --shadow-xl : 0 24px 48px rgba(13,27,62,.18);

  /* その他 */
  --radius-sm : 6px;
  --radius    : 10px;
  --radius-lg : 16px;
  --radius-xl : 24px;
  --font      : 'Noto Sans JP', sans-serif;
  --font-serif: 'Noto Serif JP', serif;
  --header-h  : 68px;
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ============================================================
   ヘッダー
   ============================================================ */
.header {
  background: linear-gradient(100deg, var(--toho-900) 0%, var(--toho-700) 60%, var(--toho-600) 100%);
  height: var(--header-h);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 16px rgba(13,27,62,.40);
  overflow: hidden;
}

/* ヘッダー右端にロゴを薄く敷く（ネイビーと同化） */
.header::before {
  content: '';
  position: absolute;
  right: -20px;
  top: 50%;
  transform: translateY(-50%);
  width: 320px;
  height: 60px;
  background: url('../images/logo_white.png') center/contain no-repeat;
  opacity: 0.07;
  pointer-events: none;
}

.header-inner {
  position: relative;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.header-logo-area {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-shrink: 0;
}

/* ================================================
   ロゴ白抜き処理
   元画像：黒背景＋白い文字・校章のPNG
   手法：画像をヘッダーと同じネイビーの box の中に入れ、
         mix-blend-mode: screen で合成する。
         screen 合成では「黒(#000)は何も加算しない＝背景そのまま」
         「白(#fff)は白を加算＝白く見える」
         → 黒背景はネイビーに消え、白ロゴだけ浮かび上がる。
   ※ mix-blend-mode が効くには親に同色の背景が必要。
     .logo-blend-wrap にヘッダーと同じネイビーを設定する。
================================================ */
.logo-blend-wrap {
  display: flex;
  align-items: center;
  height: 44px;
  /* mix-blend-mode: screen を効かせるためラップ不要。背景なし */
  background: transparent;
}

.school-logo {
  height: 44px;
  width: auto;
  display: block;
  /* filter で黒を透明に変換：brightness(0)→黒に、invert(1)→白に、
     saturate(0)→モノクロ → drop-shadow で白いシルエットとして浮かせる */
  filter: brightness(0) invert(1);
  opacity: 0.92;
  transition: opacity 0.2s;
}
.school-logo:hover { opacity: 1; }

.header-title-block {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.header-dept {
  font-family: var(--font-serif);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: #fff;
  font-weight: 500;
  white-space: nowrap;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.nav-link, .logout-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.9rem;
  border-radius: 99px;
  color: rgba(255,255,255,0.72);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 500;
  font-family: var(--font);
  border: none;
  background: transparent;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}
.nav-link:hover, .logout-btn:hover {
  background: rgba(255,255,255,0.15);
  color: #fff;
}
.nav-link.active {
  background: rgba(255,255,255,0.22);
  color: #fff;
  font-weight: 600;
}

/* ============================================================
   ヒーロー帯
   ============================================================ */
.hero-band {
  background: linear-gradient(100deg, var(--toho-900) 0%, var(--toho-700) 100%);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  position: relative;
  overflow: hidden;
}

.hero-band::after {
  content: '';
  position: absolute;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  width: 260px;
  height: 48px;
  background: url('../images/logo_white.png') center/contain no-repeat;
  opacity: 0.08;
  pointer-events: none;
}

/* ヒーロー帯下部にゴールドのアクセントライン */
.hero-band::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.hero-icon {
  font-size: 1.6rem;
  color: var(--toho-300);
  opacity: 0.9;
  flex-shrink: 0;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.06em;
  line-height: 1.2;
}

.hero-sub {
  font-size: 0.72rem;
  color: var(--toho-300);
  letter-spacing: 0.12em;
  font-weight: 400;
}

/* ============================================================
   メイン
   ============================================================ */
.main-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 3rem;
  flex: 1;
}
.admin-container { max-width: 1040px; }

/* ============================================================
   カード共通
   ============================================================ */
.card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  padding: 1.25rem;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.card-header h2 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--toho-800);
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

/* ============================================================
   コントロールカード（日付エリア）
   ============================================================ */
.ctrl-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

/* ビュー切り替えタブ */
.view-tabs {
  display: flex;
  gap: 0.3rem;
  background: var(--toho-50);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 0.25rem;
  width: fit-content;
  margin: 0 auto;
}

.view-tab-btn {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.38rem 1.1rem;
  border: none;
  background: transparent;
  border-radius: 99px;
  font-size: 0.82rem;
  font-family: var(--font);
  font-weight: 500;
  color: var(--text-md);
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}
.view-tab-btn.active {
  background: var(--toho-700);
  color: #fff;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(13,27,62,.3);
}
.view-tab-btn:hover:not(.active) { color: var(--toho-700); }

/* 日付ナビ */
.date-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
}
.date-display {
  text-align: center;
  min-width: 240px;
}
.date-label-main {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--toho-800);
  letter-spacing: 0.02em;
}
.date-label-sub {
  font-size: 0.8rem;
  color: var(--text-lt);
  font-weight: 500;
}
.date-label-sub.sat { color: var(--toho-600); }
.date-label-sub.sun { color: var(--danger); }

.date-picker-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

/* ============================================================
   ボタン
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 1.1rem;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-family: var(--font);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.18s;
  text-decoration: none;
  line-height: 1.4;
}
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: linear-gradient(135deg, var(--toho-700) 0%, var(--toho-500) 100%);
  color: #fff;
  box-shadow: 0 2px 8px rgba(13,27,62,.28);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--toho-800) 0%, var(--toho-600) 100%);
  box-shadow: 0 4px 12px rgba(13,27,62,.36);
}

.btn-ghost {
  background: transparent;
  color: var(--text-md);
  border: 1.5px solid var(--border);
}
.btn-ghost:hover { background: var(--toho-50); color: var(--toho-700); border-color: var(--toho-300); }

.btn-outline-primary {
  background: transparent;
  color: var(--toho-700);
  border: 1.5px solid var(--toho-300);
}
.btn-outline-primary:hover { background: var(--toho-50); }

.btn-danger {
  background: var(--danger);
  color: #fff;
  box-shadow: 0 2px 6px rgba(192,57,43,.25);
}
.btn-danger:hover { background: #a93226; }

.btn-success {
  background: var(--success);
  color: #fff;
}
.btn-success:hover { background: #166534; }

.btn-icon {
  background: var(--surface);
  border: 1.5px solid var(--border);
  color: var(--toho-700);
  padding: 0.4rem 0.65rem;
  border-radius: var(--radius-sm);
}
.btn-icon:hover { background: var(--toho-50); border-color: var(--toho-300); }

.btn-sm { padding: 0.32rem 0.75rem; font-size: 0.78rem; }
.btn-full { width: 100%; justify-content: center; }

/* ============================================================
   フォーム共通
   ============================================================ */
.date-input, .select-input {
  padding: 0.42rem 0.75rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-family: var(--font);
  outline: none;
  background: var(--surface);
  color: var(--text);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.date-input:focus, .select-input:focus {
  border-color: var(--toho-400);
  box-shadow: 0 0 0 3px rgba(139,52,189,.12);
}

.reserve-form { display: flex; flex-direction: column; gap: 1rem; }
.form-group   { display: flex; flex-direction: column; gap: 0.35rem; }

.form-group label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--toho-800);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.required { color: var(--danger); font-size: 0.75rem; }

.form-group input,
.form-group select {
  padding: 0.55rem 0.8rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-family: var(--font);
  outline: none;
  background: var(--surface);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-group input:focus,
.form-group select:focus {
  border-color: var(--toho-400);
  box-shadow: 0 0 0 3px rgba(139,52,189,.12);
}

.form-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  margin-top: 0.25rem;
}

/* ============================================================
   時間割テーブル共通
   ============================================================ */
.timetable-section { position: relative; }

.timetable-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius);
}
.timetable-scroll { min-width: 580px; }

.timetable {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.timetable thead tr {
  background: linear-gradient(100deg, var(--toho-800) 0%, var(--toho-600) 100%);
}
.timetable th {
  padding: 0.9rem 1rem;
  color: #fff;
  font-weight: 700;
  font-size: 1.0rem;
  text-align: center;
  letter-spacing: 0.04em;
  border-right: 1px solid rgba(255,255,255,0.12);
}
.timetable th:last-child { border-right: none; }

.period-col { min-width: 82px; width: 82px; }

.timetable td {
  padding: 0;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.timetable td:last-child { border-right: none; }
.timetable tr:last-child td { border-bottom: none; }

.period-label-cell {
  background: #faf8fc;
  text-align: center;
  vertical-align: middle !important;
  padding: 0.65rem 0.4rem !important;
}
.period-badge {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.1rem;
}
.period-num {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--toho-800);
}
.period-sub {
  font-size: 0.65rem;
  color: var(--text-lt);
  letter-spacing: 0.04em;
}

/* 特別コマ */
.lunch-row .period-label-cell      { background: #fffcf0; }
.lunch-row .period-num             { color: var(--warning); }
.afterschool-row .period-label-cell{ background: #f0fdf4; }
.afterschool-row .period-num       { color: var(--success); }

/* ===== 予約セル ===== */
.cell-inner {
  min-height: 68px;
  padding: 0.45rem;
  display: flex;
  flex-direction: column;
  gap: 0.28rem;
  cursor: pointer;
  transition: background 0.15s;
  position: relative;
}
.cell-inner:hover { background: var(--toho-50); }

.cell-inner.empty-cell:hover::after {
  content: '＋ 予約';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  color: var(--toho-600);
  font-weight: 700;
  background: rgba(242,228,252,0.75);
  letter-spacing: 0.05em;
}

.reservation-chip {
  background: linear-gradient(135deg, var(--toho-700) 0%, var(--toho-500) 100%);
  color: #fff;
  border-radius: 5px;
  padding: 0.28rem 0.45rem;
  font-size: 0.74rem;
  cursor: pointer;
  transition: all 0.18s;
  box-shadow: 0 1px 4px rgba(13,27,62,.22);
  display: flex;
  flex-direction: column;
  gap: 0.08rem;
  position: relative;
  overflow: hidden;
}
.reservation-chip::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 100%;
  background: rgba(255,255,255,0.45);
}
.reservation-chip:hover {
  background: linear-gradient(135deg, var(--danger) 0%, #e74c3c 100%);
  transform: translateY(-1px);
  box-shadow: 0 3px 8px rgba(192,57,43,.28);
}
.chip-grade {
  font-size: 0.62rem;
  opacity: 0.82;
  font-weight: 400;
}
.chip-name {
  font-weight: 700;
  font-size: 0.76rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.chip-cancel-hint {
  font-size: 0.58rem;
  opacity: 0;
  transition: opacity 0.2s;
  text-align: right;
}
.reservation-chip:hover .chip-cancel-hint { opacity: 0.85; }

/* ============================================================
   ローディング
   ============================================================ */
.loading-spinner {
  text-align: center;
  padding: 4rem;
  color: var(--text-lt);
  font-size: 0.95rem;
}
.loading-spinner i { margin-right: 0.4rem; color: var(--toho-400); }

/* ============================================================
   モーダル
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(29,8,52,.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 1rem;
  backdrop-filter: blur(3px);
  animation: fadeIn 0.15s ease;
}
@keyframes fadeIn { from{opacity:0} to{opacity:1} }

.modal-box {
  background: var(--surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: 0;
  width: 100%;
  max-width: 420px;
  overflow: hidden;
  position: relative;
  animation: slideUp 0.22s ease;
}
@keyframes slideUp { from{transform:translateY(22px);opacity:0} to{transform:translateY(0);opacity:1} }

/* モーダルヘッダーバー */
.modal-header-bar {
  padding: 0.9rem 1.5rem;
  font-size: 1.05rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  letter-spacing: 0.02em;
}
.reserve-bar {
  background: linear-gradient(100deg, var(--toho-800) 0%, var(--toho-500) 100%);
  color: #fff;
}
.cancel-bar {
  background: linear-gradient(100deg, #7f1d1d, var(--danger));
  color: #fff;
}

/* モーダル本文エリア */
.modal-box > *:not(.modal-header-bar):not(.modal-close) {
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}
.modal-box > .modal-info { padding-top: 1rem; }
.modal-box > .reserve-form { padding-bottom: 1.5rem; }
.modal-box > .form-actions { padding-bottom: 1.5rem; padding-top: 0; }
.modal-box > p { padding-top: 0.75rem; }

.modal-close {
  position: absolute;
  top: 0.7rem;
  right: 0.9rem;
  background: rgba(255,255,255,0.18);
  border: none;
  font-size: 0.95rem;
  color: rgba(255,255,255,0.85);
  cursor: pointer;
  padding: 0.28rem 0.42rem;
  border-radius: 5px;
  transition: background 0.15s;
  z-index: 2;
}
.modal-close:hover { background: rgba(255,255,255,0.32); color: #fff; }

.modal-info {
  background: var(--toho-50);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem !important;
  margin-bottom: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.info-row {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}
.info-label {
  font-size: 0.78rem;
  color: var(--text-lt);
  min-width: 64px;
  display: flex;
  align-items: center;
  gap: 0.28rem;
}
.info-value {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--toho-800);
}

.cancel-warning {
  font-size: 0.875rem;
  color: var(--danger);
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
  font-weight: 600;
}

/* ============================================================
   週ビュー
   ============================================================ */
.week-room-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.25rem;
  overflow: hidden;
}
.week-room-title {
  background: linear-gradient(100deg, var(--toho-800) 0%, var(--toho-600) 100%);
  color: #fff;
  font-size: 1.05rem;
  font-weight: 800;
  padding: 0.65rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  letter-spacing: 0.05em;
}
.week-date-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.05rem;
  padding: 0.12rem 0.05rem;
}
.week-date-num {
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1;
}
.week-date-day {
  font-size: 0.67rem;
  opacity: 0.82;
}
.week-date-header.today .week-date-num {
  background: var(--gold);
  color: #1a0a2e;
  border-radius: 50%;
  width: 1.75rem;
  height: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
.week-date-header.sat { color: #90c4f7; }
.week-date-header.sun { color: #fca5a5; }

/* ============================================================
   月ビュー
   ============================================================ */
.month-cal-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 1rem;
  margin-bottom: 1.25rem;
}
.month-cal-header {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
  margin-bottom: 4px;
}
.month-cal-weekday {
  text-align: center;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-lt);
  padding: 0.3rem 0;
  letter-spacing: 0.04em;
}
.month-cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 3px;
}
.month-cal-day {
  min-height: 72px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.3rem;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  background: var(--surface);
  overflow: hidden;
}
.month-cal-day:hover { background: var(--toho-50); border-color: var(--toho-300); }
.month-cal-day.empty { background: #f9f8fb; cursor: default; pointer-events: none; }
.month-cal-day.today { border-color: var(--toho-500); border-width: 2px; background: var(--toho-50); }
.month-cal-day.sat .month-day-num { color: var(--toho-600); }
.month-cal-day.sun .month-day-num { color: var(--danger); }

.month-day-num {
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 0.18rem;
}
.month-cal-day.today .month-day-num {
  background: var(--toho-700);
  color: white;
  border-radius: 50%;
  width: 1.45rem;
  height: 1.45rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.76rem;
}
.month-day-summary { display: flex; flex-direction: column; gap: 2px; }
.month-resv-tag {
  font-size: 0.62rem;
  background: var(--toho-100);
  color: var(--toho-700);
  border-radius: 3px;
  padding: 0.08rem 0.28rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 600;
}
/* 月サマリー */
.month-summary-section { margin-top: 0.75rem; }
.month-summary-title {
  font-size: 0.97rem;
  font-weight: 800;
  color: var(--toho-800);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.month-room-summary { margin-bottom: 0.75rem; }
.month-summary-room-name {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--toho-800);
  margin-bottom: 0.45rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.month-total-badge {
  font-size: 0.72rem;
  background: var(--toho-600);
  color: white;
  border-radius: 99px;
  padding: 0.1rem 0.55rem;
  font-weight: 700;
}
.month-period-bars { display: flex; flex-direction: column; gap: 0.28rem; }
.period-bar-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.period-bar-label {
  font-size: 0.72rem;
  color: var(--text-lt);
  min-width: 42px;
  text-align: right;
}
.period-bar-track {
  height: 9px;
  background: var(--toho-50);
  border-radius: 99px;
  flex: 1;
  border: 1px solid var(--border);
}
.period-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--toho-700), var(--toho-400));
  border-radius: 99px;
  min-width: 0;
  transition: width 0.3s;
}
.period-bar-count {
  font-size: 0.7rem;
  color: var(--toho-600);
  font-weight: 700;
  min-width: 24px;
}

/* ============================================================
   管理者タブ
   ============================================================ */
.admin-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 1.25rem;
  border-bottom: 2px solid var(--border);
}
.tab-btn {
  padding: 0.6rem 1.4rem;
  border: none;
  background: none;
  font-size: 0.88rem;
  font-family: var(--font);
  font-weight: 600;
  color: var(--text-lt);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.2s;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  letter-spacing: 0.02em;
}
.tab-btn:hover { color: var(--toho-600); }
.tab-btn.active {
  color: var(--toho-700);
  border-bottom-color: var(--toho-600);
  background: var(--toho-50);
}
.tab-content { display: none; }
.tab-content.active { display: block; }

/* 教室リスト */
.rooms-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}
.room-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fdfcff;
  transition: background 0.15s, border-color 0.15s;
}
.room-item:hover { background: var(--toho-50); border-color: var(--toho-300); }
.room-item.inactive { opacity: 0.48; }
.room-info { flex: 1; }
.room-name {
  font-weight: 700;
  color: var(--toho-800);
  font-size: 0.93rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.room-desc { font-size: 0.78rem; color: var(--text-lt); margin-top: 0.1rem; }
.room-badge {
  font-size: 0.7rem;
  padding: 0.18rem 0.55rem;
  border-radius: 99px;
  font-weight: 700;
}
.badge-active { background: var(--success-lt); color: var(--success); }
.badge-inactive { background: #f1f0f5; color: var(--text-lt); }
.room-actions { display: flex; gap: 0.45rem; flex-shrink: 0; }

/* データテーブル */
.table-scroll { overflow-x: auto; }
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.855rem;
}
.data-table th {
  background: var(--toho-50);
  padding: 0.6rem 0.85rem;
  text-align: left;
  font-weight: 700;
  color: var(--toho-700);
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
  font-size: 0.8rem;
  letter-spacing: 0.03em;
}
.data-table td {
  padding: 0.58rem 0.85rem;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}
.data-table tr:hover td { background: var(--toho-50); }
.data-table tr:last-child td { border-bottom: none; }

.filter-row { display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; }

/* 空状態 */
.empty-state { text-align: center; padding: 3rem; color: var(--text-lt); }
.empty-state i { font-size: 2.5rem; display: block; margin-bottom: 0.75rem; color: var(--toho-200); }
.empty-state p { font-size: 0.88rem; }

/* ============================================================
   ログイン画面
   ============================================================ */
.login-screen {
  min-height: 100vh;
  background: linear-gradient(145deg, var(--toho-900) 0%, var(--toho-800) 50%, var(--toho-700) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
}

/* 背景ロゴ装飾 */
.login-screen::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 70vw;
  max-width: 600px;
  height: 50vh;
  background: url('../images/logo_white.png') center/contain no-repeat;
  opacity: 0.05;
  pointer-events: none;
}
/* ゴールドリング装飾 */
.login-screen::after {
  content: '';
  position: absolute;
  bottom: -120px;
  right: -120px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  border: 60px solid rgba(201,162,39,0.08);
  pointer-events: none;
}

.login-card {
  background: var(--surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 400px;
  overflow: hidden;
  position: relative;
  z-index: 1;
}

/* ログインカード上部：ロゴエリア */
.login-logo-wrap {
  background: linear-gradient(135deg, var(--toho-900) 0%, var(--toho-700) 100%);
  /* ネイビー背景にしてロゴを完全同化 */
  padding: 2rem 2rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
/* ゴールドアクセントライン */
.login-logo-wrap::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

/* ログインロゴ */
.login-logo-wrap .logo-blend-wrap {
  background: transparent;
  height: 52px;
  display: flex;
  align-items: center;
}

.login-logo {
  height: 52px;
  width: auto;
  display: block;
  filter: brightness(0) invert(1);
  opacity: 0.92;
}

.login-title-wrap {
  padding: 1.5rem 2rem 0.5rem;
  text-align: center;
}
.login-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--toho-800);
  letter-spacing: 0.06em;
}
.login-sub {
  font-size: 0.72rem;
  color: var(--text-lt);
  letter-spacing: 0.14em;
  margin-top: 0.2rem;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1rem 2rem 1.5rem;
}

.pw-wrap {
  position: relative;
}
.pw-wrap input {
  width: 100%;
  padding-right: 2.8rem !important;
}
.pw-toggle {
  position: absolute;
  right: 0.6rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-lt);
  cursor: pointer;
  font-size: 0.9rem;
  padding: 0.2rem;
  transition: color 0.15s;
}
.pw-toggle:hover { color: var(--toho-600); }

.login-error {
  background: var(--danger-lt);
  color: var(--danger);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.75rem;
  font-size: 0.82rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  border: 1px solid rgba(192,57,43,.2);
}

.login-back {
  text-align: center;
  padding: 0.75rem 2rem 1.5rem;
  border-top: 1px solid var(--border);
}
.login-back a {
  font-size: 0.82rem;
  color: var(--text-lt);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: color 0.15s;
}
.login-back a:hover { color: var(--toho-600); }

/* ============================================================
   トースト
   ============================================================ */
.toast {
  position: fixed;
  bottom: 1.75rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--toho-900);
  color: white;
  padding: 0.7rem 1.5rem;
  border-radius: 99px;
  font-size: 0.855rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  z-index: 9999;
  animation: toastIn 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
  border: 1px solid rgba(255,255,255,0.12);
}
.toast.success { background: var(--success); }
.toast.error   { background: var(--danger); }
.toast.warning { background: var(--warning); }

@keyframes toastIn {
  from { transform: translateX(-50%) translateY(20px); opacity: 0; }
  to   { transform: translateX(-50%) translateY(0);   opacity: 1; }
}

/* ============================================================
   フッター
   ============================================================ */
.site-footer {
  background: var(--toho-800);
  color: var(--toho-300);
  text-align: center;
  font-size: 0.75rem;
  padding: 0.85rem 1.5rem;
  letter-spacing: 0.06em;
  border-top: 1px solid rgba(255,255,255,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

/* フッター内の管理者リンク：目立たせすぎず、でも見つけられる */
.footer-admin-link {
  color: rgba(255,255,255,0.28);
  text-decoration: none;
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  transition: color 0.2s;
}
.footer-admin-link:hover {
  color: rgba(255,255,255,0.65);
}

/* ============================================================
   レスポンシブ
   ============================================================ */
@media (max-width: 640px) {
  .header-title-block .header-sys { font-size: 0.85rem; }
  .header-dept { display: none; }
  .nav-link span, .logout-btn span { display: none; }
  .hero-band::after { display: none; }
  .main-container { padding: 1rem 0.75rem 2rem; }
  .ctrl-card { padding: 1rem; }
  .date-label-main { font-size: 1.05rem; }
  .modal-box { max-width: 100%; }
  .login-card { border-radius: var(--radius-lg); }
  .login-logo-wrap { padding: 1.5rem; }
  .login-form { padding: 1rem 1.5rem 1.25rem; }
  .login-title-wrap { padding: 1.25rem 1.5rem 0.5rem; }
  .login-back { padding: 0.75rem 1.5rem 1.25rem; }
  .card-header { flex-direction: column; align-items: flex-start; }
  .filter-row { width: 100%; }
}

/* ============================================================
   ユーティリティ
   ============================================================ */
.text-center { text-align: center; }
.hidden { display: none !important; }