:root {
  --brand-cream: #f8dfb0;
  --brand-violet-light: #c79ee8;
  --brand-violet: #6c4ab6;
  --brand-violet-dark: #5b3fa6;
  --brand-ink: #241b3a;
  --surface: #ffffff;
  --surface-muted: #f4f2fa;
}

body {
  background-color: #f6f5fb;
  font-family: '游ゴシック', 'Yu Gothic', 'YuGothic', 'Hiragino Kaku Gothic ProN', 'Noto Sans JP', sans-serif;
  color: #2b2438;
}

/* ---- 左サイドバー(レスポンシブ: lg未満はoffcanvasで開閉) ---- */
.app-shell {
  display: flex;
  min-height: 100vh;
  align-items: stretch;
}
.app-sidebar-toggle {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: var(--brand-violet);
  color: #fff;
  border: none;
}
.app-sidebar {
  --bs-offcanvas-width: 260px;
  width: 260px;
  flex-shrink: 0;
  background: linear-gradient(180deg, var(--brand-violet-light) 0%, var(--brand-violet) 55%, var(--brand-violet-dark) 100%);
  color: #fff;
}
.app-sidebar--master {
  background: linear-gradient(180deg, #4a4560 0%, #332b4d 55%, #241b3a 100%);
}
.app-sidebar-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 1rem;
}
.app-sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}
.app-brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}
.app-brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
}
.app-brand-text {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  line-height: 1.1;
  display: flex;
  flex-direction: column;
  color: #fff;
}
.app-brand-text small {
  font-weight: 500;
  font-size: 0.68rem;
  opacity: 0.82;
  letter-spacing: 0.04em;
}
.app-sidebar-nav {
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1 1 auto;
  overflow-y: auto;
}
.app-sidebar-link {
  display: block;
  padding: 0.55rem 0.75rem;
  border-radius: 8px;
  color: #fff;
  font-weight: 500;
  opacity: 0.92;
  text-decoration: none;
}
.app-sidebar-link:hover, .app-sidebar-link:focus {
  opacity: 1;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}
.app-sidebar-link--sub {
  padding-left: 1.5rem;
  font-size: 0.92rem;
}
.app-sidebar-group-label {
  display: block;
  padding: 0.55rem 0.75rem;
  font-weight: 600;
  opacity: 0.85;
  font-size: 0.88rem;
}
.app-sidebar-submenu {
  list-style: none;
  margin: 0;
  padding: 0;
}
.app-sidebar-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  padding-top: 0.85rem;
  margin-top: 0.85rem;
}
.app-sidebar-user {
  font-size: 0.82rem;
  opacity: 0.85;
  margin-bottom: 0.5rem;
  word-break: break-all;
}
.app-main {
  flex: 1 1 auto;
  min-width: 0;
}

/* ---- カード・テーブル ---- */
.card {
  border: none;
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(91, 63, 166, 0.08);
}
.card-header {
  background-color: var(--surface-muted);
  border-bottom: 1px solid rgba(91, 63, 166, 0.1);
  font-weight: 600;
  border-radius: 12px 12px 0 0 !important;
}
.table-sm td, .table-sm th {
  vertical-align: middle;
}

/* ---- ボタン・強調色 ---- */
.btn-primary {
  background-color: var(--brand-violet);
  border-color: var(--brand-violet);
}
.btn-primary:hover, .btn-primary:focus {
  background-color: var(--brand-violet-dark);
  border-color: var(--brand-violet-dark);
}
.btn-outline-primary {
  color: var(--brand-violet);
  border-color: var(--brand-violet);
}
.btn-outline-primary:hover {
  background-color: var(--brand-violet);
  border-color: var(--brand-violet);
}
a {
  color: var(--brand-violet-dark);
}

/* ---- ナビピル(カテゴリ選択タブなど) ---- */
.nav-pills .nav-link.active {
  background-color: var(--brand-violet);
}
.nav-pills .nav-link {
  color: var(--brand-violet-dark);
  font-weight: 500;
}

/* ---- 時間帯ヒストグラム ---- */
.hour-bar {
  display: inline-block;
  width: 100%;
  background: #eee8fa;
  border-radius: 4px;
  overflow: hidden;
  height: 14px;
}
.hour-bar-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--brand-violet-light), var(--brand-violet));
}