* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f4f6f9;
  color: #333;
  min-height: 100vh;
}

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 16px;
}

header {
  text-align: center;
  padding: 20px 0 12px;
}

header h1 {
  font-size: 1.6rem;
  color: #2c3e50;
}

.card {
  background: #fff;
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.card h2 {
  font-size: 1.05rem;
  color: #4a90d9;
  margin-bottom: 14px;
  border-left: 4px solid #4a90d9;
  padding-left: 8px;
}

.form-row {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.form-row label {
  flex: 1;
  min-width: 140px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.85rem;
  color: #555;
}

.form-row input {
  padding: 8px 10px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-size: 0.95rem;
  width: 100%;
}

.form-row input:focus {
  outline: none;
  border-color: #4a90d9;
}

.btn-primary {
  background: #4a90d9;
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 10px 24px;
  font-size: 0.95rem;
  cursor: pointer;
  width: 100%;
  margin-top: 4px;
}

.btn-primary:hover {
  background: #357abd;
}

.filter-row {
  margin-bottom: 14px;
}

.filter-row label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.85rem;
  color: #555;
  max-width: 260px;
}

.filter-row select {
  padding: 7px 10px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-size: 0.9rem;
  background: #fff;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

thead th {
  background: #f0f4f8;
  padding: 8px 10px;
  text-align: center;
  white-space: nowrap;
  color: #555;
  font-weight: 600;
}

tbody td {
  padding: 8px 10px;
  border-bottom: 1px solid #eee;
  text-align: center;
  white-space: nowrap;
}

tbody tr:last-child td {
  border-bottom: none;
}

.rate-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.85rem;
}

.rate-high { background: #e8f5e9; color: #2e7d32; }
.rate-mid  { background: #fff8e1; color: #f57f17; }
.rate-low  { background: #fce4ec; color: #c62828; }

.mom-up   { color: #2e7d32; font-weight: 600; }
.mom-down { color: #c62828; font-weight: 600; }
.mom-none { color: #999; }

.btn-del {
  background: none;
  border: none;
  color: #aaa;
  font-size: 1rem;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
}

.btn-del:hover { color: #e53935; background: #fce4ec; }

.empty-msg {
  text-align: center;
  padding: 20px;
  color: #aaa;
  font-size: 0.9rem;
}

/* グラフエリア */
.chart-area {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid #eee;
}

.chart-area h3 {
  font-size: 0.95rem;
  color: #555;
  margin-bottom: 10px;
  text-align: center;
}

canvas {
  display: block;
  width: 100%;
  max-width: 100%;
}

@media (max-width: 480px) {
  header h1 { font-size: 1.3rem; }
  .card { padding: 14px; }
  .form-row label { min-width: 100%; }
}