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

body {
  font-family: "Inter", -apple-system, "Segoe UI", "Hiragino Sans", sans-serif;
  background: #f0f4f8;
  color: #1a202c;
  line-height: 1.65;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

/* ===== ヘッダー ===== */
header {
  background: linear-gradient(135deg, #1e4e8c 0%, #2b6cb0 50%, #3182ce 100%);
  color: #fff;
  padding: 36px 24px 32px;
  text-align: center;
  box-shadow: 0 4px 16px rgba(43, 108, 176, 0.25);
  position: relative;
  overflow: hidden;
}

header::before {
  content: "";
  position: absolute;
  top: -60%;
  left: -10%;
  width: 120%;
  height: 200%;
  background: radial-gradient(ellipse at 70% 40%, rgba(255,255,255,0.07) 0%, transparent 60%);
  pointer-events: none;
}

header h1 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0.01em;
  margin-bottom: 8px;
}

.sub {
  font-size: 14px;
  opacity: 0.88;
  margin-bottom: 0;
}

.notice {
  display: inline-block;
  margin-top: 14px;
  font-size: 12px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(4px);
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid rgba(255,255,255,0.2);
  letter-spacing: 0.01em;
}

/* ===== 学習状況バッジ ===== */
.loop-badge {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
  position: relative;
  z-index: 1;
}

.loop-badge .loop-item {
  font-size: 12px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(4px);
  padding: 5px 14px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  letter-spacing: 0.01em;
}

.loop-badge .loop-item strong {
  font-weight: 700;
  margin: 0 2px;
}

/* ===== メインコンテンツ ===== */
main {
  max-width: 920px;
  margin: 28px auto;
  padding: 0 16px;
}

/* ===== カード ===== */
.card {
  background: #fff;
  border-radius: 12px;
  padding: 24px 24px 20px;
  margin-bottom: 18px;
  box-shadow:
    0 1px 2px rgba(0, 0, 0, 0.04),
    0 4px 12px rgba(0, 0, 0, 0.06);
  border: 1px solid rgba(226, 232, 240, 0.8);
  transition: box-shadow 0.2s ease;
}

.card:hover {
  box-shadow:
    0 2px 4px rgba(0, 0, 0, 0.05),
    0 8px 20px rgba(0, 0, 0, 0.08);
}

.card h2 {
  margin-top: 0;
  margin-bottom: 14px;
  font-size: 17px;
  font-weight: 600;
  color: #2b6cb0;
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 10px;
  border-bottom: 1px solid #edf2f7;
}

.hint {
  font-size: 13px;
  color: #718096;
  margin-bottom: 12px;
  line-height: 1.6;
}

/* ===== ラジオボタン（セクション1） ===== */
.card label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-right: 20px;
  font-size: 14px;
  cursor: pointer;
  color: #2d3748;
}

.card label input[type="radio"] {
  accent-color: #2b6cb0;
  width: 16px;
  height: 16px;
}

/* ===== 分析対象トグル ===== */
.metric-toggle {
  background: linear-gradient(to right, #edf2f7, #f7fafc);
  padding: 10px 16px;
  border-radius: 8px;
  margin-bottom: 14px;
  border: 1px solid #e2e8f0;
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.metric-toggle strong {
  font-size: 13px;
  color: #4a5568;
  margin-right: 8px;
}

.metric-toggle label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  margin-right: 16px;
  cursor: pointer;
  padding: 4px 10px;
  border-radius: 6px;
  transition: background 0.15s ease;
}

.metric-toggle label:hover {
  background: rgba(43, 108, 176, 0.06);
}

/* ===== 入力例ボタン ===== */
.sample-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 12px;
}

.sample-note {
  font-size: 12px;
  color: #718096;
}

button.ghost {
  background: #ebf8ff;
  border: 1.5px dashed #90cdf4;
  color: #2b6cb0;
  font-size: 13px;
  padding: 7px 14px;
}

button.ghost:hover {
  background: #bee3f8;
  border-color: #63b3ed;
}

/* ===== テーブル ===== */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
  font-size: 14px;
}

th, td {
  border: 1px solid #e2e8f0;
  padding: 9px 10px;
  text-align: left;
}

th {
  background: linear-gradient(to bottom, #f0f4f8, #edf2f7);
  font-size: 12px;
  font-weight: 600;
  color: #4a5568;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

#salesTable tbody tr,
#ngTable tbody tr {
  transition: background 0.12s ease;
}

#salesTable tbody tr:nth-child(even),
#ngTable tbody tr:nth-child(even) {
  background: #f7fafc;
}

#salesTable tbody tr:hover,
#ngTable tbody tr:hover {
  background: #ebf4ff;
}

/* ===== 入力欄 ===== */
input[type="text"],
input[type="number"],
input[type="month"] {
  width: 100%;
  padding: 7px 10px;
  border: 1.5px solid #cbd5e0;
  border-radius: 7px;
  font-size: 14px;
  font-family: inherit;
  color: #1a202c;
  background: #fff;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  outline: none;
}

input[type="text"]:focus,
input[type="number"]:focus,
input[type="month"]:focus {
  border-color: #3182ce;
  box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.15);
}

input[type="text"]::placeholder,
input[type="number"]::placeholder {
  color: #b0bec5;
}

/* ===== 単位テキスト ===== */
.unit {
  font-size: 12px;
  color: #718096;
  margin-left: 4px;
  white-space: nowrap;
}

/* ===== NG件数入力 ===== */
#salesTable td input[type="number"],
#ngTable td input[type="number"] {
  width: calc(100% - 52px);
  display: inline-block;
}

/* ===== 期間ラベル ===== */
.s-label {
  min-width: 120px;
}

input[type="month"].s-label {
  padding: 6px 10px;
}

.s-label.is-locked {
  background-color: #f0f4f8;
  color: #718096;
  cursor: not-allowed;
  border-style: dashed;
  border-color: #cbd5e0;
}

.s-label.is-locked:focus {
  outline: none;
  box-shadow: none;
}

/* ===== 識別記号バリデーション ===== */
.id-wrap {
  position: relative;
  display: flex;
  align-items: center;
  gap: 4px;
}

.id-wrap .s-id {
  flex: 1;
}

.required-mark {
  color: #e53e3e;
  font-size: 12px;
  cursor: help;
  flex-shrink: 0;
}

.id-wrap.has-error .required-mark {
  animation: pulse 1.2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

input.s-id.error {
  border-color: #e53e3e !important;
  background-color: #fff5f5;
  box-shadow: 0 0 0 3px rgba(229, 62, 62, 0.12);
}

.id-wrap .tooltip {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 6px;
  background: #e53e3e;
  color: #fff;
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 6px;
  white-space: nowrap;
  z-index: 10;
  box-shadow: 0 2px 8px rgba(229, 62, 62, 0.25);
}

.id-wrap .tooltip::before {
  content: "";
  position: absolute;
  bottom: 100%;
  left: 12px;
  border: 5px solid transparent;
  border-bottom-color: #e53e3e;
}

/* ===== ボタン ===== */
button {
  background: #fff;
  border: 1.5px solid #cbd5e0;
  padding: 8px 18px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  font-family: inherit;
  font-weight: 500;
  color: #4a5568;
  transition: background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease, transform 0.1s ease;
}

button:hover {
  background: #f0f4f8;
  border-color: #a0aec0;
  box-shadow: 0 2px 6px rgba(0,0,0,0.07);
}

button:active {
  transform: translateY(1px);
}

#addRow {
  margin-top: 4px;
  color: #2b6cb0;
  border-color: #bee3f8;
  background: #ebf8ff;
}

#addRow:hover {
  background: #bee3f8;
  border-color: #90cdf4;
}

button.del {
  background: transparent;
  border: 1.5px solid #fed7d7;
  color: #e53e3e;
  padding: 5px 10px;
  font-size: 13px;
  border-radius: 6px;
}

button.del:hover {
  background: #fff5f5;
  border-color: #fc8181;
}

button.primary {
  background: linear-gradient(135deg, #2b6cb0, #3182ce);
  color: #fff;
  border: none;
  font-weight: 600;
  padding: 13px 28px;
  border-radius: 9px;
  font-size: 15px;
  box-shadow: 0 4px 14px rgba(43, 108, 176, 0.35);
  letter-spacing: 0.01em;
}

button.primary:hover {
  background: linear-gradient(135deg, #2c5282, #2b6cb0);
  box-shadow: 0 6px 18px rgba(43, 108, 176, 0.45);
  transform: translateY(-1px);
}

button.primary:active {
  transform: translateY(1px);
  box-shadow: 0 2px 8px rgba(43, 108, 176, 0.3);
}

/* ===== タブ ===== */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  border-bottom: 2px solid #e2e8f0;
  margin-bottom: 16px;
}

.tab {
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  padding: 9px 16px;
  font-size: 13px;
  font-weight: 500;
  color: #718096;
  cursor: pointer;
  border-radius: 6px 6px 0 0;
  transition: color 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.tab:hover {
  color: #2b6cb0;
  background: rgba(43, 108, 176, 0.05);
}

.tab.active {
  color: #2b6cb0;
  border-bottom-color: #2b6cb0;
  font-weight: 600;
  background: rgba(43, 108, 176, 0.04);
}

/* ===== ビューエリア ===== */
.view {
  min-height: 60px;
}

/* ===== メトリクスカード ===== */
.metric-cards {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.metric-card {
  flex: 1 1 160px;
  background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
  border-left: 4px solid #2b6cb0;
  padding: 14px 16px;
  border-radius: 8px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.metric-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.09);
}

.metric-card .label {
  font-size: 11px;
  color: #718096;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.metric-card .value {
  font-size: 26px;
  font-weight: 700;
  color: #1e4e8c;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.metric-card .sub {
  font-size: 11px;
  color: #a0aec0;
  margin-top: 4px;
}

/* ===== プレビューテーブル ===== */
.preview-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.preview-table th,
.preview-table td {
  border: 1px solid #e2e8f0;
  padding: 8px 10px;
  text-align: right;
}

.preview-table th {
  background: linear-gradient(to bottom, #f0f4f8, #edf2f7);
  text-align: center;
  font-size: 12px;
  font-weight: 600;
  color: #4a5568;
  letter-spacing: 0.03em;
}

.preview-table tbody tr {
  transition: background 0.12s ease;
}

.preview-table tbody tr:nth-child(even) {
  background: #f7fafc;
}

.preview-table tbody tr:hover {
  background: #ebf4ff;
}

.preview-table td.center,
.preview-table th.center {
  text-align: center;
}

/* ===== 差分インジケーター ===== */
.delta-up {
  color: #276749;
  font-weight: 600;
  background: #f0fff4;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 12px;
}

.delta-down {
  color: #9b2335;
  font-weight: 600;
  background: #fff5f5;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 12px;
}

.delta-flat {
  color: #a0aec0;
  font-size: 12px;
}

/* ===== 空状態 ===== */
.empty {
  color: #a0aec0;
  font-style: italic;
  padding: 20px 12px;
  text-align: center;
  font-size: 13px;
}

/* ===== ステータス ===== */
.status {
  margin-top: 14px;
  color: #2b6cb0;
  font-weight: 600;
  font-size: 14px;
  min-height: 22px;
  padding: 8px 0;
}

/* ===== 分析レポート ===== */
#result {
  white-space: pre-wrap;
  background: #f7fafc;
  padding: 20px;
  border-radius: 10px;
  border-left: 4px solid #2b6cb0;
  font-size: 14px;
  line-height: 1.75;
  color: #2d3748;
  box-shadow: inset 0 1px 4px rgba(0,0,0,0.04);
}

/* ===== フィードバックUI ===== */
.feedback-box {
  margin-top: 18px;
  padding: 16px 18px;
  background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
  border: 1px solid #e2e8f0;
  border-radius: 10px;
}

.feedback-title {
  font-size: 14px;
  font-weight: 600;
  color: #2d3748;
  margin-bottom: 10px;
}

.feedback-sub {
  font-size: 12px;
  font-weight: 400;
  color: #718096;
  margin-left: 8px;
}

.feedback-btns {
  display: flex;
  gap: 10px;
  margin-bottom: 10px;
}

.fb-btn {
  font-size: 14px;
  padding: 8px 18px;
  border-radius: 8px;
}

.fb-btn.selected {
  background: linear-gradient(135deg, #2b6cb0, #3182ce);
  color: #fff;
  border-color: #2b6cb0;
  box-shadow: 0 2px 8px rgba(43, 108, 176, 0.3);
}

.fb-comment {
  width: 100%;
  padding: 8px 10px;
  border: 1.5px solid #cbd5e0;
  border-radius: 7px;
  font-size: 13px;
  font-family: inherit;
  color: #1a202c;
  background: #fff;
  resize: vertical;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.fb-comment:focus {
  border-color: #3182ce;
  box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.15);
}

.feedback-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
}

.fb-status {
  font-size: 12px;
  color: #2b6cb0;
  font-weight: 500;
}

/* ===== フッター ===== */
footer {
  text-align: center;
  padding: 24px;
  color: #a0aec0;
  font-size: 13px;
}

/* ===== レスポンシブ ===== */
@media (max-width: 600px) {
  header {
    padding: 24px 16px 20px;
  }

  header h1 {
    font-size: 22px;
  }

  main {
    margin: 16px auto;
    padding: 0 10px;
  }

  .card {
    padding: 16px 14px;
  }

  .metric-cards {
    flex-direction: column;
  }

  .tabs {
    gap: 0;
  }

  .tab {
    padding: 8px 10px;
    font-size: 12px;
  }

  table {
    font-size: 12px;
  }

  th, td {
    padding: 7px 6px;
  }

  button.primary {
    width: 100%;
    text-align: center;
  }

  .loop-badge {
    gap: 6px;
  }

  .feedback-btns {
    flex-wrap: wrap;
  }
}

.progress-steps {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.progress-steps .pstep {
  font-size: 12px;
  color: #a0aec0;
  background: #f0f4f8;
  border: 1px solid #e2e8f0;
  padding: 5px 12px;
  border-radius: 16px;
  transition: all 0.2s ease;
}

.progress-steps .pstep.active {
  color: #fff;
  background: linear-gradient(135deg, #2b6cb0, #3182ce);
  border-color: #2b6cb0;
  box-shadow: 0 2px 8px rgba(43, 108, 176, 0.3);
}

.progress-steps .pstep.done {
  color: #276749;
  background: #f0fff4;
  border-color: #9ae6b4;
}

.preview-actions,
.result-toolbar {
  margin-top: 14px;
  display: flex;
  justify-content: flex-end;
}