body {
  font-family: system-ui, -apple-system, "Segoe UI", "Hiragino Kaku Gothic ProN", sans-serif;
  margin: 0;
  padding: 0;
  background: #f5f6f8;
  color: #1f2430;
}

.notice-banner {
  position: sticky;
  top: 0;
  background: #fff3cd;
  border-bottom: 2px solid #e0b400;
  padding: 12px 20px;
  font-size: 0.9rem;
  z-index: 10;
}

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
}

.dummy-data-notice {
  color: #666;
  font-size: 0.85rem;
}

.panel {
  background: #fff;
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 20px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.upload-label {
  display: block;
  margin-top: 10px;
  font-size: 0.9rem;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid #e5e7eb;
}

.flag-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.8rem;
}

.flag-badge.flagged {
  background: #fde2e2;
  color: #b3261e;
}

.flag-badge.not-flagged {
  background: #e2f5e9;
  color: #1e7a3b;
}

.daily-chart {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.daily-bar-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
}

.daily-bar-track {
  flex: 1;
  background: #eee;
  border-radius: 4px;
  height: 14px;
  overflow: hidden;
}

.daily-bar-fill {
  height: 100%;
  background: #4f7cff;
}

.daily-bar-fill.flagged {
  background: #d94b4b;
}

.heatmap {
  display: grid;
  grid-template-columns: repeat(24, 1fr);
  gap: 2px;
}

.heatmap-cell {
  aspect-ratio: 1;
  border-radius: 2px;
  background: #e5e7eb;
}