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

body {
  font-family: 'Segoe UI', 'Hiragino Sans', 'Meiryo', sans-serif;
  background: #f5f0eb;
  color: #333;
  min-height: 100vh;
}

.hidden {
  display: none !important;
}

/* ログイン画面 */
.login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.login-box {
  background: #fff;
  border-radius: 16px;
  padding: 40px 36px;
  max-width: 400px;
  width: 100%;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
  text-align: center;
}

.login-box h1 {
  color: #1a3a5c;
  margin-bottom: 8px;
  font-size: 1.6rem;
}

.login-box p {
  color: #666;
  margin-bottom: 20px;
  font-size: 0.9rem;
}

.login-box form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.login-box input[type="password"] {
  padding: 12px 14px;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 1rem;
  text-align: center;
}

.login-error {
  color: #c0392b;
  font-size: 0.85rem;
  min-height: 1.2em;
}

.back-link-login {
  display: inline-block;
  margin-top: 16px;
  color: #1a3a5c;
  text-decoration: none;
  font-size: 0.85rem;
}

.back-link-login:hover {
  text-decoration: underline;
}

/* ログアウトボタン */
.logout-btn {
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  color: rgba(255,255,255,0.85);
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
}

.logout-btn:hover {
  background: rgba(255,255,255,0.25);
  color: #fff;
}

header {
  background: linear-gradient(135deg, #1a3a5c, #2c5f8a);
  color: #fff;
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

header h1 {
  font-size: 1.5rem;
  letter-spacing: 2px;
}

.back-link {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  font-size: 0.9rem;
  margin-left: auto;
}

.back-link:hover {
  color: #fff;
}

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px 16px 40px;
}

/* 日付選択 */
.date-picker {
  background: #fff;
  border-radius: 12px;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  box-shadow: 0 2px 6px rgba(0,0,0,0.06);
  margin-bottom: 20px;
}

.date-picker label {
  font-weight: bold;
  color: #1a3a5c;
}

.date-picker input[type="date"] {
  padding: 8px 12px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 1rem;
}

/* ボタン */
.btn {
  padding: 8px 16px;
  border: 1px solid #ccc;
  border-radius: 6px;
  background: #fff;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background 0.15s;
}

.btn:hover {
  background: #f0f0f0;
}

.btn-primary {
  background: #1a3a5c;
  color: #fff;
  border-color: #1a3a5c;
}

.btn-primary:hover {
  background: #2c5f8a;
}

.btn-danger {
  background: #c0392b;
  color: #fff;
  border-color: #c0392b;
}

.btn-danger:hover {
  background: #e74c3c;
}

.btn-small {
  padding: 5px 12px;
  font-size: 0.85rem;
}

/* メニュー一覧 */
.menu-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.placeholder {
  text-align: center;
  padding: 40px;
  color: #888;
}

.menu-item {
  background: #fff;
  border-radius: 10px;
  padding: 16px 20px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.06);
  display: flex;
  align-items: center;
  gap: 16px;
}

.menu-item-info {
  flex: 1;
}

.menu-item-category {
  display: inline-block;
  background: #e3ecf5;
  color: #1a3a5c;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: bold;
  margin-bottom: 4px;
}

.menu-item-name {
  font-size: 1.1rem;
  font-weight: bold;
  margin-bottom: 2px;
}

.menu-item-desc {
  font-size: 0.85rem;
  color: #888;
}

.menu-item-nutrition {
  font-size: 0.8rem;
  color: #555;
  white-space: nowrap;
}

.menu-item-actions {
  display: flex;
  gap: 8px;
}

.menu-item-memos {
  font-size: 0.8rem;
  color: #666;
  margin-top: 4px;
}

/* フォームモーダル */
.form-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 16px;
}

.form-overlay.hidden {
  display: none;
}

.form-modal {
  background: #fff;
  border-radius: 16px;
  max-width: 560px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 28px;
  position: relative;
}

.form-close {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  font-size: 1.8rem;
  cursor: pointer;
  color: #999;
}

.form-close:hover {
  color: #333;
}

.form-modal h2 {
  margin-bottom: 20px;
  color: #1a3a5c;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-weight: bold;
  margin-bottom: 4px;
  font-size: 0.9rem;
  color: #555;
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="date"],
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 1rem;
  font-family: inherit;
}

.form-group textarea {
  resize: vertical;
}

.form-actions {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

/* 栄養入力 */
.nutrition-inputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.nutrition-inputs label {
  font-size: 0.8rem;
  color: #888;
  margin-bottom: 2px;
}

.nutrition-inputs input {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 0.9rem;
}

/* 食材メモ行 */
.memo-row {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
  align-items: start;
}

.memo-row input {
  padding: 8px 10px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 0.9rem;
}

.memo-row input:first-child {
  width: 120px;
  flex-shrink: 0;
}

.memo-row input:nth-child(2) {
  flex: 1;
}

.memo-row .btn-remove-memo {
  background: none;
  border: none;
  color: #c0392b;
  font-size: 1.2rem;
  cursor: pointer;
  padding: 4px 8px;
}

/* AI生成 */
.ai-generate {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.ai-generate input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 0.9rem;
}

.btn-ai {
  background: linear-gradient(135deg, #6b46c1, #9f7aea);
  color: #fff;
  border-color: #6b46c1;
  white-space: nowrap;
}

.btn-ai:hover {
  background: linear-gradient(135deg, #553c9a, #805ad5);
}

.btn-ai:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* CSVインポート */
.import-section {
  margin-bottom: 20px;
}

.import-section summary {
  cursor: pointer;
  color: #1a3a5c;
}

.import-body {
  background: #fff;
  border-radius: 10px;
  padding: 16px;
  margin-top: 10px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.06);
}

.import-hint {
  font-size: 0.8rem;
  color: #888;
  margin-bottom: 8px;
}

.import-body textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 0.85rem;
  font-family: monospace;
  resize: vertical;
}

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

.import-result {
  font-size: 0.85rem;
}

.import-result.success {
  color: #27ae60;
}

.import-result.error {
  color: #c0392b;
}

/* レスポンシブ */
@media (max-width: 600px) {
  header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .back-link {
    margin-left: 0;
  }

  .date-picker {
    flex-direction: column;
    align-items: stretch;
  }

  .menu-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .menu-item-actions {
    width: 100%;
  }

  .memo-row {
    flex-wrap: wrap;
  }

  .memo-row input:first-child {
    width: 100%;
  }
}