/* ── リセット・ベース ─────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #f5f5f3;
  --surface:   #ffffff;
  --surface2:  #f0eeeb;
  --border:    #e0ddd8;
  --border2:   #ccc9c3;
  --primary:   #CA9B52;
  --primary-h: #b8893e;
  --primary-l: #f5ead8;
  --success:   #2e9e61;
  --danger:    #c0392b;
  --warning:   #e67e22;
  --text:      #2c2c2c;
  --text-sub:  #888880;
  --locked:    #c0392b;
  --unlocked:  #2e9e61;
  --radius:    10px;
  --shadow:    0 2px 16px rgba(0,0,0,0.08);
  --shadow-sm: 0 1px 4px rgba(0,0,0,0.06);
}

body {
  font-family: "Open Sans", -apple-system, "Noto Sans JP", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 15px;
  line-height: 1.65;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; color: var(--primary-h); }

h1, h2, h3 {
  font-family: "Playfair Display", Georgia, serif;
  font-weight: 700;
  letter-spacing: 0.01em;
}

/* ── ナビ ─────────────────────────────────────────── */
.nav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 58px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}
.nav-brand {
  font-family: "Playfair Display", Georgia, serif;
  font-weight: 700;
  font-size: 18px;
  color: var(--primary);
  letter-spacing: 0.03em;
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-brand img { height: 36px; width: auto; }
.nav-right  { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.nav-email  { color: var(--text-sub); font-size: 13px; }
.nav-link   { font-size: 14px; color: var(--text); font-weight: 600; letter-spacing: 0.02em; transition: color .2s; }
.nav-link:hover { color: var(--primary); text-decoration: none; }
.btn-logout {
  background: none; border: 1px solid var(--border2);
  color: var(--text-sub); padding: 5px 14px; border-radius: 6px;
  cursor: pointer; font-size: 13px; transition: all .2s;
  font-family: "Open Sans", sans-serif;
}
.btn-logout:hover { border-color: var(--danger); color: var(--danger); }

/* ── メイン ───────────────────────────────────────── */
.main { padding: 32px 20px; max-width: 1000px; margin: 0 auto; }

/* ── ログイン画面 ──────────────────────────────────── */
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: var(--bg); }
.login-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 44px 36px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow);
}
.login-logo  { text-align: center; margin-bottom: 14px; }
.login-logo img { height: 52px; width: auto; }
.login-logo-text {
  font-family: "Playfair Display", Georgia, serif;
  font-size: 26px; font-weight: 700;
  color: var(--primary); text-align: center;
  letter-spacing: 0.04em; margin-bottom: 4px;
}
.login-title { text-align: center; font-size: 14px; color: var(--text-sub); margin-bottom: 32px; font-family: "Open Sans", sans-serif; font-weight: 400; }
.login-divider { border: none; border-top: 1px solid var(--border); margin: 20px 0; }

/* ── フォーム共通 ──────────────────────────────────── */
.form-group  { margin-bottom: 20px; }
.form-group label { display: block; font-size: 13px; color: var(--text-sub); margin-bottom: 6px; font-weight: 600; letter-spacing: 0.03em; text-transform: uppercase; }
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="date"],
.form-group input[type="time"],
.form-group input[type="text"] {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: 8px;
  padding: 11px 14px;
  color: var(--text);
  font-size: 15px;
  font-family: "Open Sans", sans-serif;
  transition: border-color .2s, box-shadow .2s;
  -webkit-appearance: none;
}
.form-group input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(202,155,82,.15);
}
.input-disabled { opacity: .6; cursor: not-allowed; }
.form-hint { font-size: 12px; color: var(--text-sub); margin-top: 4px; display: block; }
.form-row   { display: flex; gap: 12px; }
.form-row .form-group { flex: 1; }
.form-actions { display: flex; gap: 12px; margin-top: 28px; }
.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  max-width: 620px;
  box-shadow: var(--shadow-sm);
}

/* ── チェックボックスグリッド ────────────────────────── */
.checkbox-grid { display: flex; flex-wrap: wrap; gap: 10px; }
.checkbox-item {
  display: flex; align-items: center; gap: 8px;
  background: var(--surface); border: 1px solid var(--border2);
  border-radius: 8px; padding: 8px 14px; cursor: pointer;
  transition: border-color .2s, background .2s;
  font-size: 14px;
}
.checkbox-item:hover { border-color: var(--primary); background: var(--primary-l); }
.checkbox-item input[type="checkbox"] { accent-color: var(--primary); width: 16px; height: 16px; }

/* ── ボタン ─────────────────────────────────────────── */
.btn-primary {
  background: var(--primary); color: #fff;
  border: none; border-radius: 8px;
  padding: 12px 24px; font-size: 15px; font-weight: 700;
  cursor: pointer; transition: background .2s, box-shadow .2s;
  display: inline-block; letter-spacing: 0.02em;
  font-family: "Open Sans", sans-serif;
}
.btn-primary:hover { background: var(--primary-h); text-decoration: none; color: #fff; box-shadow: 0 4px 12px rgba(202,155,82,.35); }
.btn-secondary {
  background: var(--surface); color: var(--text);
  border: 1px solid var(--border2); border-radius: 8px;
  padding: 11px 22px; font-size: 14px; font-weight: 600;
  cursor: pointer; transition: all .2s; display: inline-block;
  font-family: "Open Sans", sans-serif;
}
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); text-decoration: none; }
.btn-full { width: 100%; text-align: center; }
.btn-sm {
  font-size: 13px; padding: 5px 13px; border-radius: 6px;
  border: 1px solid var(--border2); background: var(--surface);
  color: var(--text); cursor: pointer; transition: all .2s;
  font-family: "Open Sans", sans-serif;
}
.btn-sm:hover { border-color: var(--primary); color: var(--primary); text-decoration: none; }
.btn-warning { border-color: var(--warning) !important; color: var(--warning) !important; }
.btn-danger  { border-color: var(--danger)  !important; color: var(--danger)  !important; }

/* ── アラート ─────────────────────────────────────────── */
.alert { border-radius: 8px; padding: 13px 16px; margin-bottom: 20px; font-size: 14px; }
.alert-error   { background: #fdf2f2; border: 1px solid #f5c6c6; color: #9b2020; }
.alert-success { background: #f2faf6; border: 1px solid #b8e6cc; color: #1f7845; }

/* ── ページヘッダー ────────────────────────────────────── */
.page-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 28px; flex-wrap: wrap; gap: 12px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.page-header h2 { font-size: 24px; font-weight: 700; color: var(--text); }
.subtext { color: var(--text-sub); font-size: 13px; margin-top: 3px; font-family: "Open Sans", sans-serif; }

/* ── 管理者ダッシュボード：鍵グリッド ─────────────────── */
.lock-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}
.lock-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: border-color .2s, box-shadow .2s;
  box-shadow: var(--shadow-sm);
}
.lock-card:hover { border-color: var(--primary); box-shadow: 0 4px 16px rgba(202,155,82,.12); }
.lock-card-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 12px; }
.lock-name { font-weight: 700; font-size: 15px; line-height: 1.3; font-family: "Open Sans", sans-serif; color: var(--text); }
.lock-badge {
  font-size: 12px; padding: 4px 10px; border-radius: 20px;
  font-weight: 700; white-space: nowrap;
}
.badge-locked   { background: #fdecea; color: var(--locked);   border: 1px solid #f5b8b5; }
.badge-unlocked { background: #edf8f2; color: var(--unlocked); border: 1px solid #a8dfc0; }
.badge-unknown  { background: var(--surface2); color: var(--text-sub); border: 1px solid var(--border); }
.lock-card-body { margin-bottom: 14px; }
.battery { font-size: 13px; color: var(--text-sub); }
.lock-card-actions { display: flex; gap: 10px; }
.btn-lock, .btn-unlock {
  flex: 1; padding: 9px; border-radius: 8px;
  font-size: 14px; font-weight: 700; cursor: pointer; transition: all .2s;
  font-family: "Open Sans", sans-serif;
}
.btn-lock   { background: #fdecea; color: var(--locked);   border: 1px solid #f5b8b5; }
.btn-unlock { background: #edf8f2; color: var(--unlocked); border: 1px solid #a8dfc0; }
.btn-lock:hover   { background: var(--locked);   color: #fff; border-color: var(--locked); }
.btn-unlock:hover { background: var(--unlocked); color: #fff; border-color: var(--unlocked); }
.lock-msg { margin-top: 10px; font-size: 13px; min-height: 18px; }
.msg-ok    { color: var(--success); }
.msg-error { color: var(--danger); }

/* ── テーブル ─────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
.table {
  width: 100%; border-collapse: collapse; font-size: 14px;
  background: var(--surface); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}
.table th {
  background: var(--surface2); padding: 12px 16px;
  text-align: left; color: var(--text-sub); font-weight: 700;
  font-size: 12px; white-space: nowrap; letter-spacing: 0.06em; text-transform: uppercase;
  border-bottom: 1px solid var(--border);
}
.table td {
  padding: 12px 16px; border-top: 1px solid var(--border);
  vertical-align: middle;
}
.table tr:hover td { background: #fdf9f4; }
.row-inactive td { opacity: .5; }
.action-cell { white-space: nowrap; display: flex; gap: 6px; align-items: center; }
.tag {
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 6px; padding: 2px 8px; font-size: 12px;
  display: inline-block; margin: 2px; color: var(--text);
}
.badge-ok { color: var(--success); font-weight: 700; }
.badge-ng { color: var(--danger);  font-weight: 700; }
.empty-cell { text-align: center; color: var(--text-sub); padding: 40px; }
.ua-cell { font-size: 12px; color: var(--text-sub); max-width: 200px; word-break: break-all; }
.mono { font-family: monospace; font-size: 13px; }
.error-text { display: block; color: var(--danger); font-size: 11px; margin-top: 2px; }

/* ── ゲスト画面（スマホ最適化） ──────────────────────────────────────── */
.user-page .main { max-width: 480px; }
.user-header { margin-bottom: 16px; }
.user-header h2 { font-size: 22px; }
.access-info {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: 14px 18px;
  display: flex; flex-wrap: wrap; gap: 14px;
  margin-bottom: 22px; font-size: 14px;
  box-shadow: var(--shadow-sm);
}
.info-item { color: var(--text-sub); }
.user-locks { display: flex; flex-direction: column; gap: 16px; }
.user-lock-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow-sm);
}
.user-lock-name { font-weight: 700; font-size: 18px; margin-bottom: 12px; font-family: "Open Sans", sans-serif; }
.user-lock-status {
  font-size: 22px; font-weight: 700; margin-bottom: 18px; text-align: center;
  padding: 14px; border-radius: 10px;
}
.status-locked   { background: #fdecea; color: var(--locked);   }
.status-unlocked { background: #edf8f2; color: var(--unlocked); }
.status-unknown  { background: var(--surface2); color: var(--text-sub); }
.user-lock-btns  { display: flex; gap: 14px; }
.user-btn-unlock, .user-btn-lock {
  flex: 1; padding: 18px 0; border-radius: 10px;
  font-size: 18px; font-weight: 700; cursor: pointer; transition: all .2s;
  font-family: "Open Sans", sans-serif;
}
.user-btn-unlock {
  background: #edf8f2; color: var(--unlocked);
  border: 2px solid #a8dfc0;
}
.user-btn-lock {
  background: #fdecea; color: var(--locked);
  border: 2px solid #f5b8b5;
}
.user-btn-unlock:active { background: var(--unlocked); color: #fff; transform: scale(.97); }
.user-btn-lock:active   { background: var(--locked);   color: #fff; transform: scale(.97); }
.user-lock-msg { margin-top: 12px; text-align: center; font-size: 14px; min-height: 20px; }

/* ── デバイス管理 ─────────────────────────────────────── */
.device-section { margin-bottom: 32px; }
.device-user {
  font-size: 16px; font-weight: 700; margin-bottom: 12px;
  display: flex; align-items: center; gap: 10px;
  font-family: "Open Sans", sans-serif;
}
.device-count { font-size: 13px; color: var(--text-sub); font-weight: 400; }

/* ── 空状態 ───────────────────────────────────────────── */
.empty-state {
  text-align: center; padding: 56px 20px;
  color: var(--text-sub);
  border: 2px dashed var(--border); border-radius: var(--radius);
  background: var(--surface);
}
.empty-state p { margin-bottom: 20px; font-size: 16px; }

/* ── 区切り線 ──────────────────────────────────────────── */
.section-divider {
  border: none; border-top: 1px solid var(--border);
  margin: 28px 0;
}

/* ── レスポンシブ ─────────────────────────────────────── */
@media (max-width: 600px) {
  .nav { padding: 0 14px; }
  .nav-right { gap: 10px; }
  .nav-email { display: none; }
  .main { padding: 20px 14px; }
  .lock-grid { grid-template-columns: 1fr; }
  .form-row { flex-direction: column; gap: 0; }
  .form-card { padding: 22px 18px; }
  .table th:nth-child(3), .table td:nth-child(3),
  .table th:nth-child(4), .table td:nth-child(4) { display: none; }
  .login-box { padding: 30px 22px; margin: 16px; }
  .page-header h2 { font-size: 20px; }
}