/* ===========================
   グローバルスタイル
=========================== */
:root {
  --primary: #4CAF82;
  --primary-dark: #3a9168;
  --primary-light: #e8f5ee;
  --secondary: #FF8C42;
  --secondary-light: #fff3ec;
  --accent: #5B8DEF;
  --accent-light: #eef2fd;
  --danger: #EF5350;
  --danger-light: #fdeaea;
  --warning: #FFC107;
  --warning-light: #fff8e1;
  --bg: #f4f7f5;
  --surface: #ffffff;
  --border: #e0e8e3;
  --text-primary: #1a2e24;
  --text-secondary: #5a7060;
  --text-muted: #9ab0a1;
  --shadow-sm: 0 1px 4px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.14);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --transition: all 0.2s ease;
}

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

body {
  font-family: 'Noto Sans JP', sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* ===========================
   ヘッダー
=========================== */
.app-header {
  background: linear-gradient(135deg, #2d5a3d 0%, #4CAF82 100%);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  font-size: 1.8rem;
}

.logo-text {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.03em;
}

/* タブナビゲーション */
.tab-nav {
  display: flex;
  gap: 4px;
  background: rgba(255,255,255,0.15);
  padding: 4px;
  border-radius: var(--radius-xl);
}

.tab-btn {
  background: transparent;
  border: none;
  color: rgba(255,255,255,0.8);
  padding: 8px 16px;
  border-radius: var(--radius-lg);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  font-family: 'Noto Sans JP', sans-serif;
  transition: var(--transition);
  white-space: nowrap;
}

.tab-btn:hover {
  background: rgba(255,255,255,0.2);
  color: #fff;
}

.tab-btn.active {
  background: #fff;
  color: var(--primary-dark);
  font-weight: 700;
  box-shadow: var(--shadow-sm);
}

/* ===========================
   メインレイアウト
=========================== */
.app-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===========================
   セクションヘッダー
=========================== */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.section-header h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
}

.section-header h2 i {
  color: var(--primary);
  margin-right: 8px;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 4px;
}

/* ===========================
   カード
=========================== */
.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 20px;
  background: var(--primary-light);
  border-bottom: 1px solid var(--border);
}

.card-header h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.card-icon {
  font-size: 1.2rem;
  color: var(--primary);
}

.card-icon.liked { color: var(--danger); }
.card-icon.disliked { color: var(--text-muted); }

.card-body {
  padding: 20px;
}

/* ===========================
   フォーム要素
=========================== */
.form-group {
  margin-bottom: 16px;
}

.form-group:last-child {
  margin-bottom: 0;
}

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: 'Noto Sans JP', sans-serif;
  color: var(--text-primary);
  background: var(--bg);
  transition: var(--transition);
  outline: none;
}

.form-control:focus {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(76,175,130,0.12);
}

/* カロリー入力 */
.calorie-input-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.calorie-input-wrapper .form-control {
  font-size: 1.4rem;
  font-weight: 700;
  text-align: center;
  width: 140px;
  flex: none;
}

.unit {
  font-size: 1rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* カロリープリセット */
.calorie-presets {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.preset-btn {
  flex: 1;
  min-width: 60px;
  padding: 8px 6px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
  cursor: pointer;
  font-size: 0.75rem;
  font-family: 'Noto Sans JP', sans-serif;
  color: var(--text-secondary);
  text-align: center;
  transition: var(--transition);
  line-height: 1.3;
}

.preset-btn small {
  display: block;
  font-weight: 700;
  color: var(--text-primary);
}

.preset-btn:hover,
.preset-btn.active {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary-dark);
}

.preset-btn.active small {
  color: var(--primary-dark);
}

/* 人数コントロール */
.servings-control {
  display: flex;
  align-items: center;
  gap: 12px;
}

.qty-btn {
  width: 36px;
  height: 36px;
  border: 1.5px solid var(--border);
  border-radius: 50%;
  background: #fff;
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.qty-btn:hover {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary);
}

#servings-display {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  min-width: 32px;
  text-align: center;
}

/* 食材入力 */
.ingredient-input-row {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.add-btn {
  width: 40px;
  height: 40px;
  flex: none;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.add-btn.liked {
  background: var(--danger);
  color: #fff;
}

.add-btn.liked:hover {
  background: #c62828;
}

.add-btn.disliked {
  background: var(--text-secondary);
  color: #fff;
}

.add-btn.disliked:hover {
  background: var(--text-primary);
}

/* クイックタグ */
.quick-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  margin-bottom: 12px;
}

.tag-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  flex-basis: 100%;
}

.quick-tag {
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: var(--transition);
  font-family: 'Noto Sans JP', sans-serif;
  border: 1.5px solid transparent;
}

.liked-tag {
  background: var(--danger-light);
  color: var(--danger);
  border-color: rgba(239,83,80,0.2);
}

.liked-tag:hover {
  background: var(--danger);
  color: #fff;
}

.disliked-tag {
  background: #f0f0f0;
  color: var(--text-secondary);
  border-color: #ddd;
}

.disliked-tag:hover {
  background: var(--text-secondary);
  color: #fff;
}

/* 食材タグ表示 */
.ingredient-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 40px;
}

.ingredient-tag {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
}

.ingredient-tag.liked {
  background: var(--danger-light);
  color: var(--danger);
  border: 1.5px solid rgba(239,83,80,0.25);
}

.ingredient-tag.disliked {
  background: #f0f0f0;
  color: var(--text-secondary);
  border: 1.5px solid #ddd;
}

.tag-remove {
  background: none;
  border: none;
  cursor: pointer;
  color: inherit;
  opacity: 0.6;
  font-size: 0.8rem;
  padding: 0;
  display: flex;
  align-items: center;
  transition: var(--transition);
}

.tag-remove:hover {
  opacity: 1;
}

/* 食事スタイル */
.dietary-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.toggle-label {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.toggle-label input[type="checkbox"] {
  display: none;
}

.toggle-switch {
  width: 44px;
  height: 24px;
  background: #d0d9d3;
  border-radius: 12px;
  position: relative;
  transition: var(--transition);
  flex: none;
}

.toggle-switch::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  background: #fff;
  border-radius: 50%;
  top: 3px;
  left: 3px;
  transition: var(--transition);
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.toggle-label input:checked + .toggle-switch {
  background: var(--primary);
}

.toggle-label input:checked + .toggle-switch::after {
  left: 23px;
}

/* ===========================
   生成ボタンセクション
=========================== */
.generate-section {
  text-align: center;
  padding: 32px 0;
}

.generate-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 18px 48px;
  background: linear-gradient(135deg, #4CAF82, #38a169);
  color: #fff;
  border: none;
  border-radius: 50px;
  font-size: 1.1rem;
  font-weight: 700;
  font-family: 'Noto Sans JP', sans-serif;
  cursor: pointer;
  box-shadow: 0 6px 24px rgba(76,175,130,0.4);
  transition: var(--transition);
  letter-spacing: 0.03em;
}

.generate-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(76,175,130,0.5);
}

.generate-btn:active {
  transform: translateY(0);
}

.generate-btn i {
  font-size: 1.2rem;
}

.generate-hint {
  margin-top: 12px;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ===========================
   ボタン共通
=========================== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 20px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  font-family: 'Noto Sans JP', sans-serif;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary:hover {
  background: var(--primary-dark);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  background: #fff;
  color: var(--text-secondary);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  font-family: 'Noto Sans JP', sans-serif;
  cursor: pointer;
  transition: var(--transition);
}

.btn-secondary:hover {
  background: var(--bg);
  border-color: var(--primary);
  color: var(--primary);
}

/* ===========================
   プランナーアクション
=========================== */
.planner-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.calorie-summary {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--warning-light);
  border: 1.5px solid rgba(255,193,7,0.3);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  color: #e65100;
}

.calorie-summary i {
  color: var(--warning);
}

/* ===========================
   週間カレンダー
=========================== */
.week-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.week-info {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 8px;
}

.day-column {
  min-width: 150px;
}

.day-header {
  text-align: center;
  padding: 10px 8px;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 8px;
}

.day-header.sun { background: #fdeaea; color: var(--danger); }
.day-header.mon { background: var(--primary-light); color: var(--primary-dark); }
.day-header.tue { background: var(--primary-light); color: var(--primary-dark); }
.day-header.wed { background: var(--accent-light); color: var(--accent); }
.day-header.thu { background: var(--primary-light); color: var(--primary-dark); }
.day-header.fri { background: var(--primary-light); color: var(--primary-dark); }
.day-header.sat { background: var(--accent-light); color: #3a5bb5; }

.day-date {
  font-size: 0.75rem;
  opacity: 0.8;
  font-weight: 400;
}

.meal-card {
  background: var(--surface);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  margin-bottom: 8px;
  overflow: hidden;
  transition: var(--transition);
}

.meal-card:hover {
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.meal-type-badge {
  padding: 4px 10px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.meal-type-badge.breakfast {
  background: #fff3e0;
  color: #e65100;
}

.meal-type-badge.lunch {
  background: #e8f5e9;
  color: #2e7d32;
}

.meal-type-badge.dinner {
  background: #e3f2fd;
  color: #1565c0;
}

.meal-info {
  padding: 8px 10px;
}

.meal-name {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 4px;
}

.meal-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  color: var(--text-muted);
}

.meal-meta .kcal {
  color: var(--secondary);
  font-weight: 600;
}

.meal-change-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  padding: 2px 4px;
  border-radius: 4px;
  font-size: 0.7rem;
  transition: var(--transition);
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 3px;
}

.meal-change-btn:hover {
  background: var(--primary-light);
  color: var(--primary);
}

/* ===========================
   空状態
=========================== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

.empty-icon {
  font-size: 4rem;
  margin-bottom: 16px;
}

.empty-state h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.empty-state p {
  font-size: 0.9rem;
  margin-bottom: 20px;
}

/* ===========================
   買い物リスト
=========================== */
.shopping-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.shopping-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.summary-card {
  background: var(--surface);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.summary-card .summary-icon {
  font-size: 1.8rem;
  margin-bottom: 8px;
}

.summary-card .summary-num {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
}

.summary-card .summary-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.shopping-categories {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.category-card {
  background: var(--surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.category-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  cursor: pointer;
  user-select: none;
  transition: var(--transition);
}

.category-header:hover {
  background: var(--bg);
}

.category-icon {
  font-size: 1.4rem;
}

.category-name {
  font-weight: 600;
  font-size: 1rem;
  flex: 1;
}

.category-count {
  font-size: 0.8rem;
  color: var(--text-muted);
  background: var(--bg);
  padding: 3px 10px;
  border-radius: 20px;
}

.category-toggle {
  color: var(--text-muted);
  transition: var(--transition);
}

.category-card.collapsed .category-toggle {
  transform: rotate(-90deg);
}

.category-items {
  padding: 8px 20px 16px;
  border-top: 1px solid var(--border);
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 8px;
}

.category-card.collapsed .category-items {
  display: none;
}

.shopping-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  background: #fff;
  cursor: pointer;
  transition: var(--transition);
}

.shopping-item:hover {
  border-color: var(--primary);
  background: var(--primary-light);
}

.shopping-item.checked {
  background: #f8f8f8;
  border-color: #e0e0e0;
}

.item-checkbox {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
  transition: var(--transition);
  color: transparent;
  font-size: 0.7rem;
}

.shopping-item.checked .item-checkbox {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.item-name {
  flex: 1;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: var(--transition);
}

.shopping-item.checked .item-name {
  text-decoration: line-through;
  color: var(--text-muted);
}

.item-amount {
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ===========================
   ローディング
=========================== */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.loading-box {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px 48px;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 16px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

#loading-message {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* ===========================
   トースト通知
=========================== */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 14px 24px;
  background: var(--text-primary);
  color: #fff;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  z-index: 1100;
  animation: slideUp 0.3s ease;
  max-width: 320px;
}

.toast.success { background: var(--primary); }
.toast.error { background: var(--danger); }
.toast.warning { background: var(--secondary); }

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===========================
   ユーティリティ
=========================== */
.hidden { display: none !important; }

/* ===========================
   印刷スタイル
=========================== */
@media print {
  .app-header,
  .shopping-actions,
  .section-header > *:not(h2) {
    display: none !important;
  }
  .tab-content {
    display: block !important;
  }
  #tab-settings,
  #tab-planner {
    display: none !important;
  }
  body { background: #fff; }
  .card, .category-card { box-shadow: none; border: 1px solid #ddd; }
}

/* ===========================
   レスポンシブ
=========================== */
@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    height: auto;
    padding: 12px 16px;
    gap: 10px;
  }

  .logo-text {
    font-size: 1rem;
  }

  .tab-btn {
    padding: 7px 10px;
    font-size: 0.8rem;
  }

  .app-main {
    padding: 16px 12px;
  }

  .settings-grid {
    grid-template-columns: 1fr;
  }

  .calendar-grid {
    grid-template-columns: repeat(4, minmax(140px, 1fr));
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .generate-btn {
    padding: 14px 32px;
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .tab-nav {
    width: 100%;
    justify-content: center;
  }

  .calendar-grid {
    grid-template-columns: repeat(2, minmax(150px, 1fr));
  }

  .planner-actions,
  .shopping-actions {
    width: 100%;
    justify-content: flex-start;
  }
}