:root {
  color-scheme: dark;
  --page-plane: #0d0d0d;
  --surface-1: #1a1a19;
  --text-primary: #ffffff;
  --text-secondary: #c3c2b7;
  --text-muted: #898781;
  --gridline: #2c2c2a;
  --baseline: #383835;
  --border: rgba(255, 255, 255, 0.10);
  --series-1: #3987e5;
  --series-1-soft: #184f95;
  --success: #0ca30c;
  --danger: #e66767;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--page-plane);
  color: var(--text-primary);
}

.layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 280px;
  flex-shrink: 0;
  background: var(--surface-1);
  border-right: 1px solid var(--border);
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
}

.version-tag {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.03em;
}

.brand-logo {
  max-width: 100%;
  height: auto;
}

.sidebar h1 {
  font-size: 16px;
  margin: 0;
}

.watermark {
  position: fixed;
  right: 16px;
  bottom: 16px;
  width: 160px;
  height: auto;
  opacity: 0.12;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.add-page-form {
  display: flex;
  gap: 6px;
}

.add-page-form input {
  flex: 1;
  min-width: 0;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--page-plane);
  color: var(--text-primary);
  font-size: 13px;
}

.add-page-form button {
  padding: 8px 12px;
  border: none;
  border-radius: 8px;
  background: var(--series-1);
  color: white;
  font-size: 13px;
  cursor: pointer;
}

.add-page-form button:hover { opacity: 0.9; }

.page-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow-y: auto;
}

.page-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 8px;
  cursor: pointer;
  color: var(--text-secondary);
}

.page-item:hover { background: var(--page-plane); }
.page-item.active { background: var(--series-1-soft); color: var(--text-primary); }

.reorder-controls {
  display: flex;
  flex-direction: column;
  gap: 1px;
  flex-shrink: 0;
}

.reorder-btn {
  border: none;
  background: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 8px;
  line-height: 1;
  padding: 2px 4px;
  border-radius: 3px;
}

.reorder-btn:hover:not(:disabled) {
  color: var(--series-1);
  background: var(--surface-1);
}

.reorder-btn:disabled {
  opacity: 0.25;
  cursor: default;
}

.page-avatar {
  position: relative;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--series-1);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
  flex-shrink: 0;
  overflow: hidden;
}

.page-avatar.avatar-lg {
  width: 44px;
  height: 44px;
  font-size: 16px;
}

.page-avatar .avatar-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.15s;
}

.page-item .handle {
  flex: 1;
  font-size: 13px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.page-item .remove-btn {
  border: none;
  background: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 14px;
  padding: 2px 6px;
  border-radius: 6px;
  visibility: hidden;
}

.page-item:hover .remove-btn { visibility: visible; }
.page-item .remove-btn:hover { color: var(--danger); }

.page-item .remove-btn.confirming {
  visibility: visible;
  color: white;
  background: var(--danger);
  font-size: 11px;
  font-weight: 600;
  padding: 3px 8px;
}

.page-item .remove-btn.confirming:hover { color: white; }

.empty-hint {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

.top-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.logout-btn,
.admin-btn {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: none;
  color: var(--text-muted);
  font-size: 13px;
  cursor: pointer;
}

.logout-btn:hover {
  color: var(--danger);
  border-color: var(--danger);
}

.admin-btn:hover {
  color: var(--series-1);
  border-color: var(--series-1);
}

.admin-btn.active {
  color: var(--series-1);
  border-color: var(--series-1);
  background: var(--series-1-soft);
}

.main {
  flex: 1;
  padding: 28px 32px;
  overflow-y: auto;
}

.main-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.main-header-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.main-header h2 {
  margin: 0;
  font-size: 20px;
}

.main-header .subtitle {
  font-size: 13px;
  color: var(--text-muted);
}

.refresh-btn {
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface-1);
  color: var(--text-primary);
  font-size: 13px;
  cursor: pointer;
}

.refresh-btn:hover { background: var(--series-1-soft); }

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}

.stat-tile {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px;
}

.stat-tile .label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.stat-tile .value {
  font-size: 26px;
  font-weight: 600;
  font-variant-numeric: normal;
}

.stat-tile .delta {
  font-size: 12px;
  margin-top: 4px;
}

.delta.up { color: var(--success); }
.delta.down { color: var(--danger); }

.panel {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 20px;
  margin-bottom: 20px;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.panel-header h3 {
  margin: 0;
  font-size: 14px;
}

.view-toggle {
  font-size: 12px;
  color: var(--series-1);
  cursor: pointer;
  background: none;
  border: none;
}

.chart-wrap { position: relative; }

.chart-svg {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: var(--chart-aspect, 900 / 220);
}

.table-scroll {
  overflow-x: auto;
}

.tooltip {
  position: absolute;
  pointer-events: none;
  background: var(--text-primary);
  color: var(--surface-1);
  font-size: 11px;
  padding: 6px 9px;
  border-radius: 6px;
  transform: translate(-50%, -110%);
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.1s;
  z-index: 5;
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

table.data-table th, table.data-table td {
  text-align: left;
  padding: 6px 10px;
  border-bottom: 1px solid var(--gridline);
  font-variant-numeric: tabular-nums;
}

table.data-table th {
  color: var(--text-muted);
  font-weight: 500;
}

.admin-tag {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  color: var(--series-1);
  background: var(--series-1-soft);
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 6px;
  text-transform: uppercase;
}

.admin-row-active td:first-child {
  color: var(--success);
  font-weight: 600;
}

.post-thumb {
  width: 40px;
  height: 40px;
  object-fit: cover;
  border-radius: 6px;
  display: block;
}

.empty-state {
  color: var(--text-muted);
  font-size: 13px;
  padding: 40px 0;
  text-align: center;
}

.mock-banner {
  font-size: 12px;
  color: var(--text-muted);
  background: var(--series-1-soft);
  border-radius: 8px;
  padding: 8px 12px;
  margin-bottom: 18px;
}

@media (max-width: 768px) {
  .layout {
    flex-direction: column;
    min-height: auto;
  }

  .sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 12px 16px;
    gap: 10px;
  }

  .page-list {
    max-height: 172px;
    overflow-y: auto;
  }

  .page-item .handle {
    font-size: 16px;
  }

  .page-item {
    padding: 10px;
  }

  .page-avatar {
    width: 34px;
    height: 34px;
  }

  .brand {
    align-items: center;
    text-align: center;
    width: 100%;
  }

  .brand-logo {
    max-width: 130px;
  }

  .main {
    padding: 12px 16px;
  }

  .main-header {
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 12px;
  }

  .stat-row {
    grid-template-columns: 1fr;
    gap: 8px;
    margin-bottom: 12px;
  }

  .stat-tile {
    padding: 12px 14px;
  }

  .watermark {
    width: 90px;
  }
}