* {
  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: 800px;
  margin: 0 auto;
  padding: 16px;
}

h1 {
  font-size: 1.4rem;
  color: #1e3a5f;
  margin-bottom: 4px;
}

.subtitle {
  font-size: 0.85rem;
  color: #666;
  margin-bottom: 20px;
}

/* フォームセクション */
.form-section {
  background: #fff;
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 16px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}

h2 {
  font-size: 1rem;
  color: #1e3a5f;
  margin-bottom: 12px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 12px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

label {
  font-size: 0.8rem;
  color: #555;
  font-weight: 600;
}

input[type="text"],
input[type="number"] {
  padding: 8px 10px;
  border: 1px solid #d0d7e3;
  border-radius: 6px;
  font-size: 0.95rem;
  width: 100%;
  outline: none;
  transition: border-color 0.2s;
}

input:focus {
  border-color: #2563eb;
}

.btn-add {
  background: #2563eb;
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 10px 24px;
  font-size: 0.95rem;
  cursor: pointer;
  width: 100%;
  font-weight: 600;
  transition: background 0.2s;
}

.btn-add:hover {
  background: #1d4ed8;
}

/* サマリー */
.summary-section {
  margin-bottom: 16px;
}

.summary-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.summary-card {
  background: #fff;
  border-radius: 10px;
  padding: 14px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
  text-align: center;
}

.summary-card.highlight {
  background: #1e3a5f;
  color: #fff;
}

.summary-label {
  font-size: 0.75rem;
  margin-bottom: 4px;
  opacity: 0.8;
}

.summary-value {
  font-size: 1.3rem;
  font-weight: 700;
}

/* リストセクション */
.list-section {
  background: #fff;
  border-radius: 10px;
  padding: 16px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}

.list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  flex-wrap: wrap;
  gap: 8px;
}

.sort-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: #555;
}

#sortSelect {
  padding: 4px 8px;
  border: 1px solid #d0d7e3;
  border-radius: 6px;
  font-size: 0.8rem;
}

.empty-msg {
  text-align: center;
  color: #999;
  font-size: 0.9rem;
  padding: 30px 0;
}

/* 品目カード */
.item-card {
  border: 1px solid #e5e9f0;
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 10px;
  position: relative;
}

.item-card.warning {
  border-color: #f59e0b;
  background: #fffbeb;
}

.item-name {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #1e3a5f;
  padding-right: 32px;
}

.item-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-bottom: 8px;
}

.metric {
  background: #f4f6f9;
  border-radius: 6px;
  padding: 6px 10px;
}

.metric-label {
  font-size: 0.7rem;
  color: #666;
}

.metric-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: #333;
}

.metric.turnover-warn .metric-value {
  color: #d97706;
}

.item-details {
  display: flex;
  gap: 12px;
  font-size: 0.78rem;
  color: #888;
}

.warning-badge {
  display: inline-block;
  background: #f59e0b;
  color: #fff;
  font-size: 0.7rem;
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 6px;
  vertical-align: middle;
}

.btn-delete {
  position: absolute;
  top: 10px;
  right: 10px;
  background: none;
  border: none;
  color: #ccc;
  font-size: 1.1rem;
  cursor: pointer;
  line-height: 1;
  padding: 2px 6px;
  border-radius: 4px;
  transition: color 0.2s, background 0.2s;
}

.btn-delete:hover {
  color: #ef4444;
  background: #fee2e2;
}

@media (max-width: 480px) {
  h1 { font-size: 1.2rem; }
  .form-grid { grid-template-columns: 1fr; }
  .summary-cards { grid-template-columns: 1fr; }
  .item-metrics { grid-template-columns: 1fr 1fr; }
}