/* ============================================================
   BondDrive Kids AI - 管理画面 共通CSS
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&display=swap');

:root {
  --bg:        #f5f7fa;
  --bg-card:   #ffffff;
  --ink:       #1a2b3c;
  --ink-soft:  #4b5d6f;
  --muted:     #8a9ab0;
  --line:      #e3e9f0;
  --line-soft: #eef2f7;

  --teal:      #2bb6a6;
  --teal-d:    #1f9587;
  --blue:      #4a90c8;
  --orange:    #e8954a;
  --coral:     #e87878;
  --gold:      #c8a94a;

  --danger:    #d05858;
  --danger-d:  #b34545;

  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 14px;

  --shadow-sm: 0 1px 2px rgba(20,40,60,.06);
  --shadow-md: 0 2px 8px rgba(20,40,60,.08);

  --header-h: 56px;
  --nav-h:    44px;

  font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Hiragino Sans', sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.65;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}

a { color: var(--teal-d); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ============================================================
   ログイン画面
   ============================================================ */
.login-body {
  min-height: 100vh;
  background:
    radial-gradient(circle at 20% 10%, rgba(43,182,166,0.08), transparent 60%),
    radial-gradient(circle at 80% 90%, rgba(74,144,200,0.08), transparent 60%),
    var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.login-wrap {
  width: 100%;
  max-width: 420px;
}
.login-card {
  background: var(--bg-card);
  border-radius: var(--r-lg);
  padding: 36px 28px 28px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--line-soft);
}
.login-brand {
  text-align: center;
  margin-bottom: 28px;
}
.brand-mark {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--teal) 0%, var(--teal-d) 100%);
  color: #fff;
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.5px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  box-shadow: var(--shadow-sm);
}
.brand-mark.sm {
  width: 32px;
  height: 32px;
  font-size: 13px;
  margin: 0;
}
.brand-title {
  font-size: 18px;
  font-weight: 500;
  margin: 0;
  letter-spacing: 0.05em;
}
.brand-sub {
  margin: 4px 0 0;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.1em;
}
.login-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.login-foot {
  margin-top: 20px;
  font-size: 11px;
  color: var(--muted);
  text-align: center;
  line-height: 1.7;
}

/* ============================================================
   管理画面 共通レイアウト
   ============================================================ */
.admin-body {
  min-height: 100vh;
  padding-top: calc(var(--header-h) + var(--nav-h));
}
.admin-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: var(--bg-card);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 50;
}
.admin-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  font-weight: 500;
}
.admin-brand:hover { text-decoration: none; }
.brand-name { font-size: 14px; letter-spacing: 0.05em; }

.admin-header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}
.admin-who {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--ink-soft);
}
.role-badge {
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--line-soft);
  color: var(--ink-soft);
  letter-spacing: 0.05em;
}
.role-badge.role-superadmin { background: #fef0e0; color: #a86200; }
.role-badge.role-admin      { background: #e3eef9; color: #2a5a8a; }
.role-badge.role-teacher    { background: #e8f6f3; color: var(--teal-d); }

.admin-menu { position: relative; }
.admin-menu summary {
  list-style: none;
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  background: var(--bg-card);
  font-size: 16px;
  color: var(--ink-soft);
}
.admin-menu summary::-webkit-details-marker { display: none; }
.admin-menu[open] summary { background: var(--line-soft); }
.admin-menu-panel {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-md);
  min-width: 160px;
  overflow: hidden;
}
.admin-menu-panel a {
  display: block;
  padding: 10px 14px;
  color: var(--ink);
  font-size: 13px;
  border-bottom: 1px solid var(--line-soft);
}
.admin-menu-panel a:last-child { border-bottom: none; }
.admin-menu-panel a:hover { background: var(--line-soft); text-decoration: none; }
.admin-menu-panel a.danger { color: var(--danger); }

.admin-nav {
  position: fixed;
  top: var(--header-h);
  left: 0; right: 0;
  height: var(--nav-h);
  background: var(--bg-card);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: stretch;
  padding: 0 8px;
  gap: 4px;
  overflow-x: auto;
  z-index: 49;
}
.admin-nav a {
  display: flex;
  align-items: center;
  padding: 0 14px;
  font-size: 13px;
  color: var(--ink-soft);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}
.admin-nav a:hover { text-decoration: none; color: var(--ink); }
.admin-nav a.active {
  color: var(--teal-d);
  border-bottom-color: var(--teal-d);
  font-weight: 500;
}

.admin-main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px 16px 60px;
}
.admin-main.narrow { max-width: 640px; }

.admin-footer {
  text-align: center;
  padding: 20px;
  color: var(--muted);
  font-size: 11px;
}

/* ============================================================
   タイポ・パーツ
   ============================================================ */
.page-title {
  font-size: 18px;
  font-weight: 500;
  margin: 0 0 4px;
  letter-spacing: 0.05em;
}
.page-sub {
  margin: 0 0 20px;
  font-size: 13px;
  color: var(--ink-soft);
}
.page-head-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  padding: 18px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
}
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.section-head h2 {
  margin: 0;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}
.empty {
  text-align: center;
  color: var(--muted);
  padding: 24px 12px;
  font-size: 13px;
}
.list-count {
  margin: 12px 4px 0;
  font-size: 11px;
  color: var(--muted);
  text-align: right;
}
.nowrap { white-space: nowrap; }

/* ============================================================
   ダッシュボード
   ============================================================ */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}
@media (min-width: 720px) {
  .stat-grid { grid-template-columns: repeat(4, 1fr); }
}
.stat-tile {
  background: var(--bg-card);
  border-radius: var(--r-md);
  padding: 16px;
  border-left: 4px solid var(--teal);
  box-shadow: var(--shadow-sm);
  display: block;
  color: var(--ink);
}
.stat-tile:hover { text-decoration: none; box-shadow: var(--shadow-md); }
.stat-tile.teal   { border-left-color: var(--teal); }
.stat-tile.blue   { border-left-color: var(--blue); }
.stat-tile.orange { border-left-color: var(--orange); }
.stat-tile.coral  { border-left-color: var(--coral); }
.tile-label {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}
.tile-value {
  font-size: 28px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: 0.02em;
}
.tile-unit {
  font-size: 12px;
  color: var(--muted);
  margin-left: 4px;
}
.tile-link {
  margin-top: 6px;
  font-size: 11px;
  color: var(--teal-d);
}

.quick-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ============================================================
   フォーム
   ============================================================ */
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.field-label {
  font-size: 12px;
  color: var(--ink-soft);
  letter-spacing: 0.05em;
  font-weight: 500;
}
.req { color: var(--danger); }
.field input[type="text"],
.field input[type="password"],
.field input[type="email"],
.field input[type="date"],
.field select,
.filter-input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  font-size: 14px;
  font-family: inherit;
  color: var(--ink);
  background: var(--bg-card);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.field input:focus,
.field select:focus,
.filter-input:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(43,182,166,0.12);
}
.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (max-width: 480px) {
  .field-grid { grid-template-columns: 1fr; }
}
.field-check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  padding: 8px 0;
}
.field-check input[type="checkbox"] {
  width: 18px; height: 18px;
  accent-color: var(--teal);
}

.card-form {
  background: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: var(--shadow-sm);
}

.form-actions {
  display: flex;
  gap: 8px;
  margin-top: 8px;
  flex-wrap: wrap;
}

.info-dl {
  margin: 0 0 20px;
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 6px 16px;
  font-size: 13px;
}
.info-dl dt {
  color: var(--muted);
  font-weight: 500;
}
.info-dl dd { margin: 0; }

.filter-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 16px;
}
.filter-bar .filter-input { width: auto; flex: 1; min-width: 140px; }

/* ============================================================
   ボタン
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.05em;
  border-radius: var(--r-sm);
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
  text-decoration: none;
  transition: background 0.15s, transform 0.05s, box-shadow 0.15s;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: linear-gradient(180deg, var(--teal) 0%, var(--teal-d) 100%);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { filter: brightness(1.05); }
.btn-white {
  background: var(--bg-card);
  color: var(--ink);
  border-color: var(--line);
}
.btn-white:hover { background: var(--line-soft); }
.btn-danger {
  background: var(--danger);
  color: #fff;
}
.btn-danger:hover { background: var(--danger-d); }
.btn-danger-line {
  background: var(--bg-card);
  color: var(--danger);
  border-color: #f0c8c8;
}
.btn-danger-line:hover { background: #fcefef; }
.btn-block { width: 100%; }
.btn-sm { padding: 6px 12px; font-size: 12px; }

/* ============================================================
   アラート
   ============================================================ */
.alert {
  padding: 12px 16px;
  border-radius: var(--r-sm);
  font-size: 13px;
  margin-bottom: 16px;
  border-left: 3px solid var(--muted);
  background: var(--line-soft);
}
.alert-error    { background: #fcefef; border-left-color: var(--danger); color: #8a3838; }
.alert-warning  { background: #fdf6e8; border-left-color: var(--orange); color: #8a5a18; }
.alert-success  { background: #e8f6ee; border-left-color: var(--teal-d); color: var(--teal-d); }
.alert-info     { background: #e8f0fa; border-left-color: var(--blue); color: #2a5a8a; }

/* ============================================================
   チップ
   ============================================================ */
.chip {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  font-size: 11px;
  border-radius: 999px;
  background: var(--line-soft);
  color: var(--ink-soft);
  letter-spacing: 0.05em;
}
.chip-success { background: #e8f6ee; color: var(--teal-d); }
.chip-blue    { background: #e3eef9; color: var(--blue); }
.chip-warning { background: #fdf6e8; color: #8a5a18; }
.chip-coral   { background: #fce8e8; color: var(--danger-d); }
.chip-muted   { background: #eef2f7; color: var(--muted); }

/* ============================================================
   ダッシュボード追加要素(統合版)
   ============================================================ */
.section-link-sm {
  font-size: 12px;
  color: var(--teal-d);
  font-weight: 500;
}
.card-lead {
  margin: 0 0 12px;
  font-size: 12px;
  color: var(--ink-soft);
  line-height: 1.7;
}
.meta-row {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  color: var(--ink-soft);
}
.meta-item strong {
  color: var(--ink);
  font-weight: 500;
  margin: 0 2px;
}
.child-link {
  color: var(--ink);
  font-weight: 500;
}
.child-link:hover {
  color: var(--teal-d);
}

/* ============================================================
   テーブル
   ============================================================ */
.children-table-wrap, .log-table-wrap {
  overflow-x: auto;
  margin: 0 -4px;
}
.children-table, .log-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.children-table thead th, .log-table thead th {
  text-align: left;
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.1em;
  padding: 8px 10px;
  border-bottom: 2px solid var(--line);
  background: var(--line-soft);
}
.children-table tbody td, .log-table tbody td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--line-soft);
  vertical-align: middle;
}
.children-table tbody tr:hover, .log-table tbody tr:hover {
  background: rgba(43,182,166,0.03);
}
.action-col { text-align: right; white-space: nowrap; }
.action-col .btn + .btn { margin-left: 4px; }

/* スマホ調整 */
@media (max-width: 600px) {
  .admin-main { padding: 16px 10px 60px; }
  .card { padding: 14px; }
  .card-form { padding: 16px; }
  .stat-tile { padding: 12px; }
  .tile-value { font-size: 24px; }
  .children-table thead { display: none; }
  .children-table tbody td {
    display: block;
    border-bottom: none;
    padding: 4px 10px;
  }
  .children-table tbody tr {
    display: block;
    border: 1px solid var(--line-soft);
    border-radius: var(--r-sm);
    margin-bottom: 8px;
    padding: 8px 4px;
  }
  .children-table tbody tr:hover { background: var(--bg-card); }
  .action-col { text-align: left; padding-top: 8px !important; }
}