/* ========================
   認証ページ（ログイン・新規登録）共通スタイル
   BEM 命名規則に従う
   ======================== */

/* ---- ページレイアウト ---- */
.auth-page {
  min-height: calc(100vh - 120px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl) var(--spacing-md);
  background-color: var(--color-bg-surface);
}

/* ---- カードコンテナ ---- */
.auth-card {
  background-color: var(--color-bg);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 420px;
  overflow: hidden;
}

.auth-card__header {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-xl) var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}

.auth-card__logo {
  display: inline-block;
  font-size: var(--font-size-2xl);
  font-weight: 900;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-md);
  text-decoration: none;
}

.auth-card__logo:hover {
  opacity: 0.85;
  text-decoration: none;
}

.auth-card__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

.auth-card__subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.auth-card__body {
  padding: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.auth-card__footer {
  padding: var(--spacing-lg) var(--spacing-xl);
  border-top: 1px solid var(--color-border);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.auth-card__link-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.auth-card__link {
  color: var(--color-primary);
  font-weight: 600;
}

.auth-card__link:hover {
  text-decoration: underline;
}

/* ---- フォームパーツ ---- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.form-group--checkbox {
  flex-direction: row;
  align-items: center;
  gap: var(--spacing-sm);
}

.form-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
}

.form-input {
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-size: var(--font-size-base);
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--border-radius);
  transition: border-color 0.15s, box-shadow 0.15s;
  outline: none;
}

.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-input::placeholder {
  color: var(--color-text-muted);
  opacity: 0.7;
}

.form-input--error {
  border-color: var(--color-danger);
}

.form-input--error:focus {
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.15);
}

.form-checkbox {
  width: 1rem;
  height: 1rem;
  accent-color: var(--color-primary);
  cursor: pointer;
  flex-shrink: 0;
}

.form-checkbox-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  cursor: pointer;
}

/* ---- ボタン（幅いっぱい） ---- */
.btn--full {
  width: 100%;
  padding: 0.75rem;
}

/* ---- レスポンシブ ---- */
@media (max-width: 430px) {
  .auth-page {
    padding: var(--spacing-lg) var(--spacing-sm);
    align-items: flex-start;
    padding-top: var(--spacing-xl);
  }

  .auth-card__header {
    padding: var(--spacing-xl) var(--spacing-md) var(--spacing-md);
  }

  .auth-card__body {
    padding: var(--spacing-md);
  }

  .auth-card__footer {
    padding: var(--spacing-md);
  }

  .btn--full {
    padding: 0.875rem;
    font-size: var(--font-size-base);
    min-height: 48px;
  }
}


/* ========================
   Books（積読一覧）スタイル
   BEM 命名規則に従う
   ======================== */

/* ---- 積読一覧ページ全体 ---- */
.books-index {
  padding: var(--spacing-xl) 0 var(--spacing-3xl);
}

.books-index__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.books-index__title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text);
}

.books-index__add-btn {
  white-space: nowrap;
}

.books-index__header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.books-index__search--hidden {
  display: none !important;
}

.books-index__search {
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-md);
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.books-index__search-fields {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--spacing-md);
}

.books-index__search-field {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.books-index__search-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  font-weight: 600;
}

.books-index__search-input {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 0.6rem 0.7rem;
  font-size: var(--font-size-base);
}

.books-index__search-actions {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

/* ---- 書籍カードリスト ---- */
.book-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  list-style: none;
  padding: 0;
  margin: 0;
}

.book-list__item {
  display: flex;
}

/* ---- 書籍カード ---- */
.book-card {
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  width: 100%;
  transition: box-shadow 0.2s, transform 0.2s;
  text-decoration: none;
  color: inherit;
}

.book-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

/* ---- 書影エリア ---- */
.book-card__cover-wrapper {
  position: relative;
  flex-shrink: 0;
  width: 100px;
  margin: var(--spacing-md) auto 0;
}

.book-card__cover {
  width: 100px;
  aspect-ratio: 3 / 4;
  background-color: var(--color-bg-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: filter 0.3s, opacity 0.3s;
}

.book-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  image-rendering: auto;
}

.book-card__cover-placeholder {
  font-size: 3rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

/* 賞味期限ビジュアライザー */
.book-card__cover--urgent-low {
  filter: sepia(40%) contrast(90%);
  opacity: 0.9;
}

.book-card__cover--urgent-medium {
  filter: sepia(70%) contrast(85%);
  opacity: 0.8;
}

.book-card__cover--urgent-high {
  filter: sepia(100%) contrast(80%) brightness(95%);
  opacity: 0.7;
}

/* 緊急度バッジ */
.book-card__urgency-badge {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  background-color: var(--color-danger);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 99px;
  line-height: 1.4;
  white-space: nowrap;
}

/* ---- カード本文 ---- */
.book-card__body {
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  flex: 1;
}

.book-card__title {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.4;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
}

.book-card__author {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.book-card__memo {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 0;
}

/* ステータスバッジ */
.book-card__status {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 99px;
  width: fit-content;
}

.book-card__status--unread {
  background-color: #f3f4f6;
  color: var(--color-text-muted);
}

.book-card__status--reading {
  background-color: #dbeafe;
  color: #1d4ed8;
}

.book-card__status--completed {
  background-color: #dcfce7;
  color: #15803d;
}

.book-card__status--retired {
  background-color: #e5e7eb;
  color: #374151;
}

.book-card__rating {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.book-card__rating-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.book-card__rating-stars {
  font-size: var(--font-size-sm);
  color: #d97706;
  letter-spacing: 0.08em;
}

/* ---- 読了期限 ---- */
.book-card__deadline {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.book-card__deadline-label {
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.book-card__deadline-value {
  font-weight: 600;
  color: var(--color-text);
}

/* ---- 進捗バー ---- */
.book-card__progress {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.book-card__progress-bar-wrapper {
  height: 6px;
  background-color: var(--color-border);
  border-radius: 99px;
  overflow: hidden;
}

.book-card__progress-bar {
  height: 100%;
  background-color: var(--color-success);
  border-radius: 99px;
  transition: width 0.3s ease;
  min-width: 2px;
}

.book-card__progress-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ---- 今日のノルマ ---- */
.book-card__quota {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background-color: var(--color-bg);
  border: 2px solid var(--color-secondary);
  border-radius: var(--border-radius);
  padding: var(--spacing-sm) var(--spacing-md);
  margin-top: auto;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.05);
}

.book-card__quota-label {
  font-size: var(--font-size-sm);
  color: var(--color-secondary);
  flex-shrink: 0;
  font-weight: 600;
}

.book-card__quota-value {
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.book-card__quota-value strong {
  font-size: var(--font-size-xl);
  font-weight: 900;
  color: var(--color-secondary);
}

/* ---- ノルマ 期限超過 ---- */
.book-card__quota-value--overdue {
  color: #dc2626;
  font-weight: 700;
}

/* ---- Empty State ---- */
.books-empty {
  text-align: center;
  padding: var(--spacing-3xl) var(--spacing-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
}

.books-empty__icon {
  font-size: 4rem;
  line-height: 1;
}

.books-empty__title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text);
}

.books-empty__description {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  max-width: 400px;
}

/* ---- レスポンシブ ---- */
@media (max-width: 640px) {
  .books-index__header {
    flex-direction: column;
    align-items: flex-start;
  }

  .books-index__header-actions {
    width: 100%;
    justify-content: space-between;
  }

  .books-index__search {
    padding: var(--spacing-sm);
  }

  .book-list {
    grid-template-columns: 1fr;
  }

  .books-empty {
    padding: var(--spacing-2xl) var(--spacing-md);
  }
}

/* ========================
   書籍詳細（book-show）スタイル
   ======================== */

.book-show {
  max-width: 640px;
  margin: var(--spacing-xl) auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

/* ---- 書影エリア（賞味期限ビジュアライザー） ---- */
.book-show__cover-wrapper {
  position: relative;
  width: 120px;
  flex-shrink: 0;
}

.book-show__cover {
  width: 120px;
  aspect-ratio: 3 / 4;
  background-color: var(--color-bg-surface);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: filter 0.3s, opacity 0.3s;
}

.book-show__cover-placeholder {
  font-size: 3rem;
  line-height: 1;
}

.book-show__cover-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  image-rendering: auto;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.book-show__cover-image:hover {
  opacity: 0.8;
}

.book-show__urgency-badge {
  position: absolute;
  top: var(--spacing-xs);
  right: calc(-1 * var(--spacing-xs));
  background-color: var(--color-danger);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 99px;
  line-height: 1.4;
  white-space: nowrap;
}

/* ---- ヘッダー ---- */
.book-show__header {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.book-show__title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.4;
}

.book-show__author {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
}

/* ステータスバッジ */
.book-show__status {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 99px;
  width: fit-content;
}

.book-show__status--unread {
  background-color: #f3f4f6;
  color: var(--color-text-muted);
}

.book-show__status--reading {
  background-color: #dbeafe;
  color: #1d4ed8;
}

.book-show__status--completed {
  background-color: #dcfce7;
  color: #15803d;
}

.book-show__status--retired {
  background-color: #e5e7eb;
  color: #374151;
}

/* ---- 進捗バー ---- */
.book-show__progress {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.book-show__progress-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.book-show__progress-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-muted);
}

.book-show__progress-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.book-show__progress-bar-wrapper {
  height: 10px;
  background-color: var(--color-border);
  border-radius: 99px;
  overflow: hidden;
}

.book-show__progress-bar {
  height: 100%;
  background-color: var(--color-primary);
  border-radius: 99px;
  transition: width 0.3s ease;
  min-width: 2px;
}

/* ---- 詳細グリッド ---- */
.book-show__details {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md) var(--spacing-lg);
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  margin: 0;
}

.book-show__detail-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.book-show__detail-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.book-show__detail-value {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
}

.book-show__detail-value strong {
  font-size: var(--font-size-xl);
  font-weight: 900;
  color: #b45309;
}

.book-show__quota-overdue {
  color: #dc2626;
  font-weight: 700;
}

.book-show__quota-done {
  color: var(--color-text-muted);
}

/* ---- 前後ナビゲーション (Issue #376) ---- */
.book-show__nav {
  display: flex;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.book-show__nav-btn {
  min-width: 120px;
  text-align: center;
}

.book-show__nav-btn--disabled {
  min-width: 120px;
  text-align: center;
  color: var(--color-text-muted);
  cursor: not-allowed;
  pointer-events: none;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-sm) var(--spacing-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-base);
}

/* ---- アクションボタン ---- */
.book-show__actions {
  display: flex;
  gap: var(--spacing-md);
}

/* ---- コメント・メモ ---- */
.book-show__memo {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.book-show__memo-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text);
}

.book-show__memo-field {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.book-show__memo-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.book-show__memo-toolbar-group {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.book-show__memo-color-input {
  width: 2rem;
  height: 2rem;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 0;
  background-color: var(--color-bg);
}

.book-show__memo-input {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-sm);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  resize: vertical;
}

.book-show__memo-help {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.book-show__memo-actions {
  display: flex;
}

.book-show__memo-preview {
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-md);
}

.book-show__memo-preview-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.book-show__memo-preview-body {
  line-height: 1.7;
  color: var(--color-text);
  word-break: break-word;
}

/* ---- Googleカレンダー連携 ---- */
.book-show__gcal {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.book-show__gcal-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text);
}

.book-show__gcal-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.book-show__gcal-options {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.book-show__gcal-option {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  cursor: pointer;
  font-size: var(--font-size-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  background-color: var(--color-bg);
  transition: border-color 0.15s, background-color 0.15s;
}

.book-show__gcal-option input[type="radio"] {
  accent-color: var(--color-primary);
}

.book-show__gcal-option input[type="radio"]:checked {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

@supports selector(.book-show__gcal-option:has(input:checked)) {
  .book-show__gcal-option:has(input:checked) {
    border-color: var(--color-primary);
    background-color: #eff6ff;
    font-weight: 600;
    color: var(--color-primary);
  }

  .book-show__gcal-option input[type="radio"]:checked {
    outline: none;
  }
}

.book-show__gcal-note {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin: 0;
}

/* ---- レスポンシブ ---- */
@media (max-width: 640px) {
  .book-show__details {
    grid-template-columns: 1fr;
  }
}

/* ========================
   画像拡大モーダル（HTML5 dialog）
   ======================== */
.image-modal-dialog {
  border: none;
  background: transparent;
  padding: 0;
  max-width: 90vw;
  max-height: 90vh;
  outline: none;
  overflow: visible;
}

.image-modal-dialog::backdrop {
  background-color: rgba(0, 0, 0, 0.75);
}

.image-modal-dialog__container {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.image-modal-dialog__image {
  max-width: 100%;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--border-radius-lg);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
}

.image-modal-dialog__close {
  position: absolute;
  top: -1.5rem;
  right: -1.5rem;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  border: none;
  background-color: rgba(255, 255, 255, 0.9);
  color: #000000;
  font-size: 1.25rem;
  font-weight: bold;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  transition: background-color 0.2s, transform 0.1s;
  z-index: 10;
}

.image-modal-dialog__close:hover {
  background-color: #ffffff;
  transform: scale(1.05);
}

/* モバイル向け調整 */
@media (max-width: 640px) {
  .image-modal-dialog__close {
    top: 0.5rem;
    right: 0.5rem;
    background-color: rgba(0, 0, 0, 0.6);
    color: #ffffff;
  }
  .image-modal-dialog__close:hover {
    background-color: rgba(0, 0, 0, 0.8);
  }
}

/* ========================
   削除確認モーダル
   ======================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-overlay[hidden] {
  display: none;
}

.modal {
  background-color: var(--color-bg);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  max-width: 400px;
  width: 90%;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.15);
}

.modal__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.modal__body {
  color: var(--color-text-secondary, var(--color-text));
  margin-bottom: var(--spacing-xl);
  line-height: 1.6;
}

.modal__book-name {
  font-weight: 700;
  color: var(--color-text);
}

.modal__actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
}

/* ========================
   進捗更新フォーム (book-show__progress-update)
   ======================== */

.book-show__progress-update {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.book-show__progress-update-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text);
}

/* ---- 入力フィールド ---- */
.progress-update__field {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.progress-update__label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-muted);
}

.progress-update__input {
  width: 80px;
  text-align: center;
  padding: var(--spacing-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
  background-color: var(--color-bg);
}

/* 直接入力行（単位付き） */
.progress-update__input-row {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.progress-update__unit {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ========================
   読了機能 (Issue #21)
   ======================== */

/* ---- 読了ボタンエリア (W-6) ---- */
.book-show__complete-section {
  text-align: center;
}

.book-show__complete-btn {
  display: inline-block;
  width: 100%;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text-muted);
  background-color: var(--color-bg-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  cursor: pointer;
  transition: background-color 0.2s, border-color 0.2s, color 0.2s, transform 0.1s;
}

.book-show__complete-btn:hover {
  background-color: var(--color-border);
}

.book-show__complete-btn--highlighted {
  color: #ffffff;
  background-color: #16a34a;
  border-color: #16a34a;
  font-size: var(--font-size-lg);
  padding: var(--spacing-lg) var(--spacing-xl);
  box-shadow: 0 4px 12px rgba(22, 163, 74, 0.4);
  animation: pulse-green 2s infinite;
}

.book-show__complete-btn--highlighted:hover {
  background-color: #15803d;
  border-color: #15803d;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(22, 163, 74, 0.5);
}

@keyframes pulse-green {
  0%, 100% { box-shadow: 0 4px 12px rgba(22, 163, 74, 0.4); }
  50% { box-shadow: 0 4px 20px rgba(22, 163, 74, 0.7); }
}

@media (prefers-reduced-motion: reduce) {
  .book-show__complete-btn--highlighted {
    animation: none;
  }
}

/* ---- 読了済みカード (W-4) ---- */
.book-card--completed {
  opacity: 0.75;
  filter: grayscale(30%);
}

.book-card--completed:hover {
  opacity: 0.9;
  filter: grayscale(0%);
}

/* ---- リタイアカード ---- */
.book-card--retired {
  opacity: 0.65;
  filter: grayscale(50%);
}

.book-card--retired:hover {
  opacity: 0.85;
  filter: grayscale(20%);
}

/* ---- 読了お祝いモーダル (W-13) ---- */
.celebration-modal-overlay {
  /* 削除確認モーダルより高い z-index で前面に表示 */
  z-index: 1100;
}

.celebration-modal {
  text-align: center;
  gap: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.celebration-modal__emoji {
  font-size: 4rem;
  line-height: 1;
  margin: 0;
}

.celebration-modal__title {
  font-size: var(--font-size-xl);
  color: #15803d;
}

.celebration-modal__book-name {
  font-size: var(--font-size-base);
  color: var(--color-text);
  font-weight: 600;
}

.celebration-modal__stats {
  display: flex;
  gap: var(--spacing-xl);
  justify-content: center;
  margin: 0;
  padding: var(--spacing-md) var(--spacing-xl);
  background-color: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: var(--border-radius-lg);
  width: 100%;
}

.celebration-modal__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
}

.celebration-modal__stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.celebration-modal__stat-value {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
}

.celebration-modal__stat-value strong {
  font-size: var(--font-size-2xl);
  font-weight: 900;
  color: #15803d;
}

/* ---- 評価・感想入力フォーム (お祝いモーダル内) ---- */
.celebration-modal__review-form {
  width: 100%;
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-lg);
  margin-top: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  text-align: left;
}

.celebration-modal__form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.rating-input {
  display: flex;
  flex-direction: row-reverse;
  justify-content: flex-end;
  gap: 0.25rem;
}

.rating-input__star {
  display: none;
}

.rating-input__label {
  font-size: 2.25rem;
  color: #e5e7eb;
  cursor: pointer;
  transition: color 0.1s ease-in-out;
}

.rating-input__star:checked ~ .rating-input__label,
.rating-input__label:hover,
.rating-input__label:hover ~ .rating-input__label {
  color: #fbbf24;
}

.celebration-modal__review-input {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-sm);
  font-size: var(--font-size-base);
  resize: vertical;
  min-height: 80px;
}

.celebration-modal__form-actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  width: 100%;
}

/* ---- 詳細画面での表示用 ---- */
.book-show__review-section {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.book-show__review-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.book-show__review-title {
  font-size: var(--font-size-base);
  font-weight: 700;
}

.book-show__rating-stars {
  color: #fbbf24;
  font-size: var(--font-size-lg);
  letter-spacing: 0.1em;
}

.book-show__review-body {
  line-height: 1.7;
  color: var(--color-text);
  white-space: pre-wrap;
  word-break: break-word;
}

/* ========================
   積読登録フォーム
   ======================== */

/* ---- ページヘッダー ---- */
.page-header {
  margin-bottom: var(--spacing-xl);
}

.page-header__title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

.page-header__description {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ---- フォームラッパー ---- */
.book-form-wrapper {
  max-width: 540px;
  margin: 0 auto;
}

.book-form-wrapper form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* ---- フォームフィールド ---- */
.form-field {
  display: block;
  position: relative;
}

.form-field > * + * {
  margin-top: var(--spacing-xs);
}

.form-field__label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
}

.form-field__required {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: #ffffff;
  background-color: var(--color-danger);
  padding: 0.1rem 0.4rem;
  border-radius: 9999px;
  line-height: 1.4;
  margin-left: var(--spacing-xs);
  vertical-align: middle;
}

.form-field__optional {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  padding: 0.1rem 0.4rem;
  border-radius: 9999px;
  line-height: 1.4;
  margin-left: var(--spacing-xs);
  vertical-align: middle;
}

.form-field__input {
  display: block;
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-size: var(--font-size-base);
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--border-radius);
  transition: border-color 0.15s, box-shadow 0.15s;
  outline: none;
}

.form-field__input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-field__input::placeholder {
  color: var(--color-text-muted);
  opacity: 0.7;
}

.form-field__input--narrow {
  display: inline-block;
  width: 9rem;
}

.form-field__input--date {
  width: auto;
}

.form-field__input--error {
  border-color: var(--color-danger);
}

.form-field__input--error:focus {
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.15);
}

.form-field__error {
  font-size: var(--font-size-sm);
  color: var(--color-danger);
  font-weight: 500;
}

.form-field__hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.form-field__unit {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  align-self: center;
}

/* ---- フォームエラー一覧 ---- */
.form-errors {
  background-color: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.form-errors__title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-danger);
}

.form-errors__list {
  padding-left: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.form-errors__list li {
  font-size: var(--font-size-sm);
  color: var(--color-danger);
}

/* ---- フォームアクション ---- */
.form-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  padding-top: var(--spacing-sm);
}

/* ---- ノルマプレビュー ---- */
.quota-preview {
  background-color: #fffbeb;
  border: 1px solid #fcd34d;
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.quota-preview__label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: #92400e;
}

.quota-preview__value {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-xs);
}

.quota-preview__number {
  font-size: var(--font-size-2xl);
  font-weight: 900;
  color: #b45309;
  line-height: 1;
}

.quota-preview__unit {
  font-size: var(--font-size-sm);
  color: #92400e;
}

.quota-preview__note {
  font-size: var(--font-size-sm);
  color: #a16207;
}

/* ---- レスポンシブ（登録フォーム） ---- */
@media (max-width: 640px) {
  .book-form-wrapper {
    max-width: 100%;
  }

  .form-field__input--narrow {
    width: 7rem;
  }
}

.book-form__title-status {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-top: 0.25rem;
  min-height: 1.25rem;
}

/* ---- 書影プレビュー ---- */
.book-cover-preview {
  margin-top: 0.5rem;
}

.book-cover-preview__image {
  width: 80px;
  height: auto;
  border: 1px solid var(--color-border, #e2e8f0);
  border-radius: 4px;
  display: block;
}

  /* ---- タイトルオートコンプリート ---- */
  .title-autocomplete__list {
    position: absolute;
    z-index: 100;
    background-color: var(--color-bg, #fff);
    border: 1px solid var(--color-border, #e2e8f0);
    border-radius: var(--border-radius-md, 6px);
    box-shadow: var(--shadow-md, 0 4px 12px rgba(0,0,0,0.1));
    list-style: none;
    margin: 2px 0 0;
    padding: 4px 0;
    width: 100%;
    max-height: 260px;
    overflow-y: auto;
  }

  .title-autocomplete__list--hidden {
    display: none;
  }

  .title-autocomplete__item {
    display: block;
  }

  .title-autocomplete__item--active .title-autocomplete__button,
  .title-autocomplete__button:hover {
    background-color: var(--color-bg-surface, #f8fafc);
  }

  .title-autocomplete__button {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 8px 12px;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: 0.875rem;
    color: var(--color-text, #1a202c);
    transition: background-color 0.15s;
  }

  .title-autocomplete__cover {
    width: 36px;
    height: 48px;
    object-fit: cover;
    border-radius: 2px;
    flex-shrink: 0;
    border: 1px solid var(--color-border, #e2e8f0);
  }

  .title-autocomplete__info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
  }

  .title-autocomplete__title {
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .title-autocomplete__author {
    font-size: 0.8125rem;
    color: var(--color-text-secondary, #718096);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

.book-card__category {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  color: #0369a1;
  background-color: #e0f2fe;
  border: 1px solid #bae6fd;
  border-radius: 99px;
  padding: 0.1rem 0.5rem;
  width: fit-content;
  margin-right: 0.25rem;
}

.book-card__genre {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-muted);
  background-color: #f3f4f6;
  border: 1px solid #e5e7eb;
  border-radius: 99px;
  padding: 0.1rem 0.5rem;
  width: fit-content;
  margin-right: 0.25rem;
}

/* ---- メモタイムライン ---- */
.memo-timeline {
  margin-top: var(--spacing-md);
}

.memo-timeline__empty {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  text-align: center;
  padding: var(--spacing-md) 0;
}

.memo-timeline__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-md);
}

.memo-timeline__item {
  border-left: 3px solid var(--color-primary, #4a90d9);
  padding-left: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.memo-timeline__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm);
}

.memo-timeline__date {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.memo-timeline__delete-btn {
  font-size: var(--font-size-xs, 0.75rem);
  padding: 2px 8px;
  line-height: 1.5;
}

.memo-timeline__body {
  line-height: 1.7;
  color: var(--color-text);
  word-break: break-word;
  font-size: var(--font-size-base);
}

.memo-timeline__body p {
  margin: 0;
}

.memo-timeline__body p + p {
  margin-top: var(--spacing-xs);
}

/* =============================================
   検索フィルターオートコンプリート (ISSUE#216)
   ============================================= */

.search-filter-autocomplete {
  position: relative;
}

.search-filter-autocomplete__list {
  position: absolute;
  z-index: 100;
  background-color: var(--color-bg, #fff);
  border: 1px solid var(--color-border, #e2e8f0);
  border-radius: var(--border-radius-md, 6px);
  box-shadow: var(--shadow-md, 0 4px 12px rgba(0,0,0,0.1));
  list-style: none;
  margin: 2px 0 0;
  padding: 4px 0;
  width: 100%;
  max-height: 220px;
  overflow-y: auto;
}

.search-filter-autocomplete__list--hidden {
  display: none;
}

.search-filter-autocomplete__item {
  display: block;
}

.search-filter-autocomplete__item--active .search-filter-autocomplete__button,
.search-filter-autocomplete__button:hover {
  background-color: var(--color-bg-surface, #f8fafc);
}

.search-filter-autocomplete__button {
  display: block;
  width: 100%;
  padding: 8px 12px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: 0.875rem;
  color: var(--color-text, #1a202c);
  transition: background-color 0.15s;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* =============================================
   評価・感想セクション (ISSUE#197)
   ============================================= */

.book-show__review {
  margin-top: 1.5rem;
  padding: 1.25rem;
  background: var(--color-surface, #fff);
  border: 1px solid var(--color-border, #e2e8f0);
  border-radius: 8px;
}

.book-show__review-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--color-text-primary, #2d3748);
}

.book-show__review-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary, #718096);
  margin-bottom: 0.5rem;
}

.book-show__review-rating {
  margin-bottom: 1rem;
}

.book-show__stars {
  display: flex;
  flex-direction: row-reverse;
  gap: 4px;
  width: fit-content;
}

.book-show__star-input {
  display: none;
}

.book-show__star-label {
  cursor: pointer;
  font-size: 1.75rem;
  color: #cbd5e0;
  transition: color 0.15s;
}

.book-show__star-label:has(.book-show__star-input:checked) ~ .book-show__star-label .book-show__star-icon,
.book-show__star-label:has(.book-show__star-input:checked) .book-show__star-icon,
.book-show__stars:has(.book-show__star-label:hover) .book-show__star-label:hover ~ .book-show__star-label .book-show__star-icon,
.book-show__stars:has(.book-show__star-label:hover) .book-show__star-label:hover .book-show__star-icon {
  color: #f6ad55;
}

.book-show__stars-display {
  margin-top: 0.5rem;
  font-size: 1.25rem;
}

.book-show__star-filled {
  color: #f6ad55;
}

.book-show__star-empty {
  color: #cbd5e0;
}

.book-show__review-field {
  margin-bottom: 1rem;
}

.book-show__review-input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border, #e2e8f0);
  border-radius: 6px;
  font-size: 0.9375rem;
  resize: vertical;
  font-family: inherit;
}

.book-show__review-input:focus {
  outline: none;
  border-color: var(--color-primary, #667eea);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
}

.book-show__review-help {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.75rem;
  color: var(--color-text-secondary, #718096);
}

.book-show__review-actions {
  display: flex;
  justify-content: flex-end;
}

.book-show__chart {
  margin-top: var(--spacing-xl);
  padding: var(--spacing-lg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  background: var(--color-bg-surface);
}

.book-show__chart-header {
  display: flex;
  justify-content: space-between;
  gap: var(--spacing-sm);
  align-items: baseline;
  flex-wrap: wrap;
  margin-bottom: var(--spacing-md);
}

.book-show__chart-title {
  margin: 0;
  font-size: var(--font-size-lg);
}

.book-show__chart-note {
  margin: 0;
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.book-show__chart-axes {
  margin: 0 0 var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.book-show__chart-scroll {
  width: 100%;
  overflow-x: auto;
  padding-bottom: var(--spacing-xs);
}

.book-show__chart-svg {
  display: block;
  min-width: 520px;
  width: 100%;
}

.book-show__chart-grid {
  stroke: #e2e8f0;
  stroke-width: 1;
}

.book-show__chart-axis {
  stroke: #94a3b8;
  stroke-width: 1.5;
}

.book-show__chart-line {
  fill: none;
  stroke: #2563eb;
  stroke-width: 2.5;
  stroke-linejoin: round;
  stroke-linecap: round;
}

.book-show__chart-point {
  stroke: #ffffff;
  stroke-width: 1.5;
}

.book-show__chart-point--active {
  fill: #2563eb;
}

.book-show__chart-point--zero {
  fill: #94a3b8;
}

.book-show__chart-y-label {
  text-anchor: end;
  fill: #64748b;
  font-size: 11px;
}

.book-show__chart-x-label {
  text-anchor: middle;
  fill: #64748b;
  font-size: 11px;
}

.book-show__chart-table-wrap {
  margin-top: var(--spacing-md);
  max-height: 220px;
  overflow: auto;
}

.book-show__chart-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.book-show__chart-table th,
.book-show__chart-table td {
  border-bottom: 1px solid var(--color-border);
  padding: 0.45rem 0.5rem;
  text-align: left;
}

.book-show__chart-empty {
  margin: 0;
  color: var(--color-text-muted);
}

@media (max-width: 640px) {
  .book-show__chart {
    padding: var(--spacing-md);
  }

  .book-show__chart-scroll {
    overflow-x: hidden;
  }

  .book-show__chart-svg {
    min-width: 0;
  }

  .book-show__chart-table-wrap {
    max-height: 180px;
  }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ---- 項目ごとの個別取得（補完）用レイアウト ---- */
.form-field__input-row {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.form-field__input-row .form-field__input {
  flex: 1;
}

.form-field__input-row .form-field__input--narrow {
  flex: initial;
}

.btn--sm {
  padding: 0.5rem 1rem;
  font-size: var(--font-size-sm);
  flex-shrink: 0;
}


@media (max-width: 640px) {
  .memo-card {
    padding: var(--spacing-md);
  }
}

/* ---- メモ検索結果 ---- */
.memo-search-results {
  margin-top: var(--spacing-2xl);
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-xl);
}

.memo-search-results__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-lg);
}

.memo-search-results__book-title {
  font-weight: 700;
  color: var(--color-primary, #4a90d9);
  text-decoration: none;
  font-size: var(--font-size-base);
}

.memo-search-results__book-title:hover {
  text-decoration: underline;
}

.memo-search-results__actions {
  display: flex;
  justify-content: flex-end;
  margin-top: var(--spacing-xs);
}
/* ========================
   ダッシュボード スタイル
   BEM 命名規則に従う
   ======================== */

.dashboard {
  padding: var(--spacing-xl) 0 var(--spacing-3xl);
}

.dashboard__header {
  margin-bottom: var(--spacing-xl);
}

.dashboard__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

.dashboard__date {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
}

/* ---- グリッドレイアウト (2カラム) ---- */
.dashboard__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: var(--spacing-xl);
  align-items: start;
}

/* ---- セクションタイトル ---- */
.dashboard__section-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-xs);
  border-bottom: 2px solid var(--color-secondary);
}

/* ---- 進行中の書籍カードリスト ---- */
.dashboard__book-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.dashboard__book-card {
  display: flex;
  gap: var(--spacing-lg);
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
}

.dashboard__book-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* 書影 */
.dashboard__book-cover-wrapper {
  position: relative;
  flex-shrink: 0;
  width: 100px;
}

.dashboard__book-cover {
  width: 100px;
  aspect-ratio: 3 / 4;
  background-color: var(--color-bg);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: filter 0.3s, opacity 0.3s;
}

.dashboard__book-cover-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.dashboard__book-cover-placeholder {
  font-size: 2.5rem;
}

.dashboard__urgency-badge {
  position: absolute;
  top: calc(-1 * var(--spacing-xs));
  right: calc(-1 * var(--spacing-xs));
  background-color: var(--color-danger);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 99px;
  line-height: 1.4;
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
}

/* 書籍情報 */
.dashboard__book-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  flex: 1;
  min-width: 0; /* レスポンシブで文字省略を効かせるため */
}

.dashboard__book-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  line-height: 1.4;
}

.dashboard__book-title a {
  color: var(--color-text);
  text-decoration: none;
}

.dashboard__book-title a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.dashboard__book-author {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

/* 進捗バー */
.dashboard__progress {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
}

.dashboard__progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-sm);
}

.dashboard__progress-text {
  color: var(--color-text-muted);
}

.dashboard__progress-percentage {
  font-weight: 600;
  color: var(--color-primary);
}

.dashboard__progress-bar-wrapper {
  height: 8px;
  background-color: var(--color-border);
  border-radius: 99px;
  overflow: hidden;
}

.dashboard__progress-bar {
  height: 100%;
  background-color: var(--color-success);
  border-radius: 99px;
  transition: width 0.3s ease;
  min-width: 2px;
}

/* ノルマ (木製プレート風) */
.dashboard__quota {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background-color: var(--color-bg);
  border: 2px solid var(--color-secondary);
  border-radius: var(--border-radius);
  padding: var(--spacing-xs) var(--spacing-md);
  margin-top: auto;
  width: fit-content;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.05);
}

.dashboard__quota--completed {
  border-color: var(--color-border);
  background-color: var(--color-bg-surface);
}

.dashboard__quota-label {
  font-size: var(--font-size-sm);
  color: var(--color-secondary);
  font-weight: 600;
  white-space: nowrap;
}

.dashboard__quota--completed .dashboard__quota-label {
  color: var(--color-text-muted);
}

.dashboard__quota-value {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  white-space: nowrap;
}

.dashboard__quota-value strong {
  font-size: var(--font-size-lg);
  font-weight: 900;
  color: var(--color-secondary);
}

.dashboard__quota-value--overdue {
  color: var(--color-danger);
  font-weight: 700;
}

/* アクションボタン */
.dashboard__book-actions {
  display: flex;
  align-items: center;
  align-self: center;
  flex-shrink: 0;
}

/* ---- サイドバーとカード ---- */
.dashboard__sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.dashboard__card {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
}

.dashboard__card-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-xs);
  border-bottom: 2px solid var(--color-border);
}

/* 読書統計 (Stats) */
.dashboard__stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-sm);
}

.dashboard__stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-md) var(--spacing-xs);
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.dashboard__stat-number {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
}

.dashboard__stat-unit {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-primary);
  margin-left: 2px;
}

.dashboard__stat-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-weight: 600;
  margin-top: var(--spacing-xs);
}

/* 目標進捗 (Goals) */
.dashboard__goal-summary {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.dashboard__goal-quota {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-sm) var(--spacing-md);
}

.dashboard__goal-quota-label {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  font-weight: 600;
}

.dashboard__goal-quota-value {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.dashboard__goal-quota-value strong {
  font-size: var(--font-size-lg);
  color: var(--color-primary);
}

.dashboard__goal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-xs);
}

.dashboard__goal-label {
  font-weight: 600;
  color: var(--color-text);
}

.dashboard__goal-progress-text {
  color: var(--color-text-muted);
}

.dashboard__goal-bar-wrapper {
  height: 8px;
  background-color: var(--color-border);
  border-radius: 99px;
  overflow: hidden;
}

.dashboard__goal-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--color-secondary) 0%, var(--color-secondary-hover) 100%);
  border-radius: 99px;
  transition: width 0.3s ease;
}

/* 週次アクティビティグラフ */
.dashboard__activity-chart {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-md) var(--spacing-sm);
}

.activity-chart {
  display: flex;
  justify-content: space-around;
  align-items: flex-end;
  height: 130px;
  padding-top: var(--spacing-md);
}

.activity-chart__bar-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 12%;
  height: 100%;
}

.activity-chart__bar-wrapper {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  width: 100%;
  height: 105px; /* バーの最大高さ */
  position: relative;
  cursor: pointer;
}

.activity-chart__bar {
  width: 16px;
  background: linear-gradient(0deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
  border-radius: 99px 99px 0 0;
  transition: height 0.3s ease;
  position: relative;
  min-height: 4px;
}

.activity-chart__bar:hover {
  background: var(--color-primary-hover);
}

.activity-chart__bar-value {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 9px;
  font-weight: 700;
  color: var(--color-primary);
  white-space: nowrap;
}

.activity-chart__day {
  font-size: 10px;
  color: var(--color-text-muted);
  font-weight: 600;
  margin-top: var(--spacing-sm);
  text-align: center;
}

/* 最近読了した本 */
.dashboard__completed-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.dashboard__completed-item {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  background-color: var(--color-bg);
  text-decoration: none;
  color: inherit;
  transition: background-color 0.15s, transform 0.15s;
}

.dashboard__completed-item:hover {
  background-color: var(--color-bg-surface);
  transform: translateX(2px);
  text-decoration: none;
}

.dashboard__completed-cover {
  width: 45px;
  aspect-ratio: 3 / 4;
  background-color: var(--color-bg-surface);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.dashboard__completed-cover-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.dashboard__completed-cover-placeholder {
  font-size: 1.25rem;
}

.dashboard__completed-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 2px;
  min-width: 0;
}

.dashboard__completed-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dashboard__completed-author {
  font-size: 11px;
  color: var(--color-text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dashboard__completed-stars {
  font-size: 11px;
  color: #d97706;
  letter-spacing: 1px;
}

.dashboard__completed-empty {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  text-align: center;
  padding: var(--spacing-md) 0;
}

/* Empty State */
.dashboard__empty {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-md);
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
}

.dashboard__empty-icon {
  font-size: 3rem;
  line-height: 1;
}

.dashboard__empty-text {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  max-width: 300px;
}

/* ---- レスポンシブ ---- */
@media (max-width: 820px) {
  .dashboard__grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
}

@media (max-width: 540px) {
  .dashboard__book-card {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .dashboard__book-cover-wrapper {
    align-self: center;
  }

  .dashboard__book-actions {
    align-self: stretch;
  }

  .dashboard__book-actions .btn {
    width: 100%;
  }

  .activity-chart__bar {
    width: 12px;
  }

  .activity-chart__bar-value {
    font-size: 8px;
    top: -14px;
  }

  .lookback-card__body {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .lookback-card__cover-wrapper {
    align-self: center;
  }
}

/* ---- 過去のランダム振り返り (Lookback Card) ---- */
.lookback-card {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  background-color: var(--color-bg-surface);
}

.lookback-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xs);
}

.lookback-card__title {
  margin-bottom: 0;
  border-bottom: none;
  padding-bottom: 0;
}

.lookback-card__shuffle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 4px 8px;
  text-decoration: none;
  transition: background-color 0.2s, border-color 0.2s, color 0.2s;
  cursor: pointer;
}

.lookback-card__shuffle:hover {
  background-color: var(--color-bg-surface);
  border-color: var(--color-primary);
  color: var(--color-primary);
  text-decoration: none;
}

.lookback-card__shuffle-icon {
  font-size: 0.9rem;
}

.lookback-card__book-info {
  margin-bottom: var(--spacing-xs);
  padding: var(--spacing-xs) 0;
}

.lookback-card__book-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  margin-bottom: 2px;
  line-height: 1.4;
}

.lookback-card__book-title a {
  color: var(--color-text);
  text-decoration: none;
}

.lookback-card__book-title a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.lookback-card__book-author {
  font-size: 11px;
  color: var(--color-text-muted);
}

.lookback-card__completed-at {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-top: 2px;
}

.lookback-card__section {
  border-radius: var(--border-radius);
  padding: var(--spacing-sm) var(--spacing-md);
  margin-top: var(--spacing-xs);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.02);
}

/* 本全体の評価と感想枠 (マクロ視点) */
.lookback-card__section--review {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
}

/* 読書中のメモ枠 (ミクロ視点) */
.lookback-card__section--memo {
  background-color: var(--color-bg-surface);
  border: 1px dashed var(--color-secondary);
}

.lookback-card__section-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-secondary);
  margin-bottom: var(--spacing-xs);
}

.lookback-card__rating {
  margin-bottom: var(--spacing-xs);
}

.lookback-card__stars {
  color: #d97706;
  font-size: 12px;
  letter-spacing: 1px;
}

.lookback-card__no-rating {
  font-size: 11px;
  color: var(--color-text-muted);
}

.lookback-card__review {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  line-height: 1.6;
}

.lookback-card__review p {
  margin-bottom: 0;
}

.lookback-card__no-review {
  font-size: 12px;
  color: var(--color-text-muted);
  font-style: italic;
  margin: 0;
}

.lookback-card__memo-body {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.lookback-card__memo-content {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  line-height: 1.6;
  margin: 0;
}

.lookback-card__memo-content p {
  margin-bottom: 0;
}

.lookback-card__memo-page {
  font-size: 11px;
  color: var(--color-text-muted);
  align-self: flex-end;
  font-style: normal;
}

.lookback-card__body {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
}

.lookback-card__cover-wrapper {
  position: relative;
  flex-shrink: 0;
  width: 100px;
  aspect-ratio: 3 / 4;
  background-color: var(--color-bg);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.lookback-card__cover-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.lookback-card__cover-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  background-color: var(--color-bg);
  color: var(--color-text-muted);
}

.lookback-card__cover-placeholder-icon {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xs);
}

.lookback-card__cover-placeholder-text {
  font-size: 0.65rem;
  font-weight: 600;
}

.lookback-card__details {
  flex: 1;
  min-width: 0;
}
/* ========================
   共通ヘッダー・フッター
   BEM 命名規則に従う
   ======================== */

/* ---- サイトヘッダー ---- */
.site-header {
  background-color: var(--color-bg-surface);
  border-bottom: 2px solid var(--color-secondary);
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-header__logo {
  font-size: var(--font-size-2xl);
  font-weight: 900;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  text-decoration: none;
}

.site-header__logo:hover {
  opacity: 0.85;
  text-decoration: none;
}

.site-header__nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.site-header__nav-link {
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  text-decoration: none;
  transition: color 0.2s, background-color 0.2s;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius);
}

.site-header__nav-link:hover {
  color: var(--color-primary);
  background-color: rgba(27, 67, 50, 0.05);
  text-decoration: none;
}

/* ---- ドロップダウン ---- */
.dropdown {
  position: relative;
}

.dropdown__trigger {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius);
  color: var(--color-text);
  font-size: var(--font-size-base);
  font-family: var(--font-sans);
  transition: background-color 0.2s;
}

.dropdown__trigger:hover {
  background-color: rgba(27, 67, 50, 0.05);
}

.dropdown__avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: #ffffff;
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  flex-shrink: 0;
}

.dropdown__username {
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.dropdown__caret {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.dropdown__menu {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 0.5rem);
  min-width: 160px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  z-index: 200;
  overflow: hidden;
}

.dropdown__menu--open {
  display: block;
}

.dropdown__item {
  display: block;
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  text-decoration: none;
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: background-color 0.15s;
}

.dropdown__item:hover {
  background-color: var(--color-bg-surface);
  text-decoration: none;
}

.dropdown__item--logout {
  color: var(--color-danger);
}

.dropdown__item--logout:hover {
  background-color: #fef2f2;
}

.dropdown__logout-form {
  margin: 0;
}

/* ---- フラッシュメッセージ ---- */
.flash {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  text-align: center;
}

.flash--notice {
  background-color: #e8f5e9;
  color: var(--color-success);
  border-bottom: 1px solid #c8e6c9;
}

.flash--alert {
  background-color: #ffebee;
  color: var(--color-danger);
  border-bottom: 1px solid #ffcdd2;
}

/* ---- サイトフッター ---- */
.site-footer {
  background-color: var(--color-bg-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-lg) 0;
  margin-top: auto;
}

.site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.site-footer__logo {
  font-size: var(--font-size-lg);
  font-weight: 900;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.site-footer__copy {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ---- レスポンシブ ---- */
@media (max-width: 640px) {
  .dropdown__username {
    display: none;
  }

  .site-footer__inner {
    flex-direction: column;
    text-align: center;
  }
}

/* モバイル（430px以下）: ゲストヘッダーボタンのサイズ・余白調整 */
@media (max-width: 430px) {
  .site-header__nav .btn {
    padding: 0.45rem 0.75rem;
    font-size: var(--font-size-sm);
  }

  .site-header__logo {
    font-size: var(--font-size-xl);
  }
}

/* 極小モバイル（360px以下）: ヘッダーをさらにコンパクトに */
@media (max-width: 360px) {
  .site-header__nav {
    gap: var(--spacing-xs);
  }

  .site-header__nav .btn {
    padding: 0.4rem 0.6rem;
    font-size: 0.8125rem;
  }

  .site-header__logo {
    font-size: var(--font-size-lg);
  }
}
/* ========================
   マイページ スタイル
   BEM 命名規則に従う
   ======================== */

/* ---- マイページ全体 ---- */
.mypage {
  padding: var(--spacing-xl) 0 var(--spacing-3xl);
}

.mypage__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.mypage__title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text);
}

/* ---- カード ---- */
.mypage__card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

.mypage__card-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-border);
}

/* ---- ユーザー情報リスト ---- */
.mypage__info-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.mypage__info-item {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.mypage__info-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  min-width: 10rem;
  flex-shrink: 0;
}

.mypage__info-value {
  font-size: var(--font-size-base);
  color: var(--color-text);
}

/* ---- ニックネーム編集 ---- */
.mypage__nickname-edit {
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-lg);
}

.mypage__nickname-edit-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
}

.mypage__form-errors {
  background-color: #fef2f2;
  border: 1px solid #fca5a5;
  border-radius: var(--border-radius);
  padding: var(--spacing-sm) var(--spacing-md);
  margin-bottom: var(--spacing-md);
  color: var(--color-danger);
  font-size: var(--font-size-sm);
}

.mypage__form-errors ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.mypage__form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.mypage__form-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
}

.mypage__form-input {
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-base);
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
  max-width: 30rem;
}

.mypage__form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* ---- 読書実績 ---- */
.mypage__stats {
  display: flex;
  gap: var(--spacing-xl);
  flex-wrap: wrap;
}

.mypage__stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  min-width: 8rem;
  padding: var(--spacing-lg);
  background-color: var(--color-bg-surface);
  border-radius: var(--border-radius-lg);
  text-align: center;
}

.mypage__stat-number {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.mypage__stat-unit {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  margin-left: 2px;
}

.mypage__stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  font-weight: 500;
}

/* ---- 読了履歴 ---- */
.mypage__empty-message {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.mypage__history-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.mypage__history-item {
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
}

.mypage__history-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  text-decoration: none;
  color: inherit;
  border-radius: var(--border-radius);
  transition: background-color 0.15s;
  flex-wrap: wrap;
}

.mypage__history-link:hover {
  background-color: var(--color-bg-surface);
  text-decoration: none;
}

.mypage__history-title {
  font-weight: 600;
  color: var(--color-text);
  flex: 1;
  min-width: 0;
}

.mypage__history-author {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.mypage__history-date {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  white-space: nowrap;
}

/* ---- 日別読書ログ ---- */
.mypage__daily-log-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.mypage__daily-log-caption {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.mypage__daily-log-item {
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
}

.mypage__daily-log-date {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.mypage__daily-log-book-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.mypage__daily-log-book-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  padding: var(--spacing-xs) 0;
}

.mypage__daily-log-book-title {
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.mypage__daily-log-pages {
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  font-weight: 600;
  white-space: nowrap;
}

.mypage__daily-log-empty {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

/* ---- アカウント設定 ---- */
.mypage__settings-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.mypage__settings-link {
  color: var(--color-primary);
  text-decoration: none;
  font-size: var(--font-size-base);
  font-weight: 500;
}

.mypage__settings-link:hover {
  text-decoration: underline;
}

/* ---- 読書統計ページ ---- */
.mypage-stats {
  padding: var(--spacing-xl) 0 var(--spacing-3xl);
}

.mypage-stats__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}

.mypage-stats__title {
  font-size: var(--font-size-2xl);
  color: var(--color-text);
}

.mypage-stats__header-links {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.mypage-stats__period-tabs {
  display: inline-flex;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  overflow: hidden;
  margin-bottom: var(--spacing-md);
}

.mypage-stats__period-tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 5.5rem;
  padding: 0.5rem 1rem;
  color: var(--color-text-muted);
  background-color: var(--color-bg);
  font-weight: 600;
  text-decoration: none;
  transition: background-color 0.2s, color 0.2s;
}

.mypage-stats__period-tab:hover {
  background-color: var(--color-bg-surface);
  text-decoration: none;
}

.mypage-stats__period-tab--active {
  background-color: var(--color-primary);
  color: #fff;
}

.mypage-stats__period-summary {
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.mypage-stats__cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.mypage-stats__card {
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  background-color: var(--color-bg);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-lg);
}

.mypage-stats__card-title {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-sm);
}

.mypage-stats__card-value {
  color: var(--color-primary);
  font-size: var(--font-size-3xl);
  font-weight: 700;
  line-height: 1.1;
}

.mypage-stats__card-unit {
  margin-top: var(--spacing-xs);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.mypage-stats__breakdown {
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  background-color: var(--color-bg);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-lg);
}

.mypage-stats__breakdown-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
}

.mypage-stats__empty {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.mypage-stats__list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.mypage-stats__item-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xs);
}

.mypage-stats__book-title {
  font-weight: 600;
  color: var(--color-text);
}

.mypage-stats__book-pages {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  white-space: nowrap;
}

.mypage-stats__bar {
  width: 100%;
  height: 0.75rem;
  background-color: var(--color-bg-surface);
  border-radius: 999px;
  overflow: hidden;
}

.mypage-stats__bar-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, #2563eb 0%, #3b82f6 100%);
  border-radius: inherit;
}

.mypage-stats__category-section {
  margin-top: 2rem;
}

.mypage-stats__chart-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3rem;
  margin-top: 1.5rem;
}

.mypage-stats__pie-chart {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}

.mypage-stats__pie-chart::after {
  content: "";
  position: absolute;
  top: 17.5%;
  left: 17.5%;
  width: 65%;
  height: 65%;
  background-color: var(--color-bg);
  border-radius: 50%;
}

.mypage-stats__chart-legend {
  flex-grow: 1;
}

.mypage-stats__legend-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.mypage-stats__legend-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.mypage-stats__legend-color {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border-radius: 4px;
  flex-shrink: 0;
}

.mypage-stats__legend-label {
  font-weight: 600;
  flex-grow: 1;
}

.mypage-stats__legend-value {
  color: var(--color-text-secondary, #6b7280);
  white-space: nowrap;
}

@media (max-width: 768px) {
  .mypage-stats__chart-container {
    flex-direction: column;
    gap: 1.5rem;
  }

  .mypage-stats__pie-chart {
    width: 180px;
    height: 180px;
  }
}

@media (max-width: 768px) {
  .mypage-stats__cards {
    grid-template-columns: 1fr;
  }

  .mypage-stats__item-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
  }
}

/* カスタム期間フォーム */
.mypage-stats__custom-form {
  margin-bottom: 1.5rem;
  padding: 1rem 1.25rem;
  background-color: var(--color-bg-surface);
  border-radius: 0.5rem;
  border: 1px solid var(--color-border);
}

.mypage-stats__custom-form-inner {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.mypage-stats__custom-form-fields {
  display: flex;
  align-items: flex-end;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.mypage-stats__custom-form-field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.mypage-stats__custom-form-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: 500;
}

.mypage-stats__custom-form-input {
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--color-border);
  border-radius: 0.375rem;
  font-size: var(--font-size-sm);
  background-color: var(--color-bg);
  color: var(--color-text);
}

.mypage-stats__custom-form-sep {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  padding-bottom: 0.4rem;
}

/* 日別ページ数グラフ */
.mypage-stats__daily {
  margin-top: 2rem;
}

.mypage-stats__daily-chart {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.mypage-stats__daily-row {
  display: grid;
  grid-template-columns: 5rem 1fr 3.5rem;
  align-items: center;
  gap: 0.75rem;
}

.mypage-stats__daily-date {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.mypage-stats__daily-bar-wrap {
  width: 100%;
  height: 0.75rem;
  background-color: var(--color-bg-surface);
  border-radius: 999px;
  overflow: hidden;
}

.mypage-stats__daily-bar {
  height: 100%;
  background: linear-gradient(90deg, #16a34a 0%, #22c55e 100%);
  border-radius: inherit;
  transition: width 0.3s ease;
}

.mypage-stats__daily-pages {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-align: right;
  white-space: nowrap;
}

/* 読書ログ詳細テーブル */
.mypage-stats__log-details {
  margin-top: 2rem;
}

.mypage-stats__log-table-wrap {
  overflow-x: auto;
  margin-top: 0.75rem;
  border-radius: 0.5rem;
  border: 1px solid var(--color-border);
}

.mypage-stats__log-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.mypage-stats__log-th {
  padding: 0.6rem 0.875rem;
  background-color: var(--color-bg-surface);
  color: var(--color-text-secondary);
  font-weight: 600;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.mypage-stats__log-row:not(:last-child) {
  border-bottom: 1px solid var(--color-border);
}

.mypage-stats__log-row:hover {
  background-color: var(--color-bg-surface);
}

.mypage-stats__log-td {
  padding: 0.6rem 0.875rem;
  color: var(--color-text);
}

@media (max-width: 768px) {
  .mypage-stats__custom-form-fields {
    flex-direction: column;
    align-items: flex-start;
  }

  .mypage-stats__daily-row {
    grid-template-columns: 4rem 1fr 3rem;
  }
}

/* ---- ジャンル設定 ---- */
.mypage__genre-caption {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.mypage__genre-empty {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-md);
}

/* ジャンル追加フォーム */
.genre-add-form {
  margin-bottom: var(--spacing-md);
}

.genre-add-form__errors {
  margin-bottom: var(--spacing-sm);
  color: var(--color-danger, #d93025);
  font-size: var(--font-size-sm);
}

.genre-add-form__errors ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.genre-add-form__row {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

.genre-add-form__input {
  flex: 1;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  font-size: var(--font-size-base);
  background-color: var(--color-bg);
  color: var(--color-text);
  min-width: 0;
}

.genre-add-form__input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.15);
}

/* ジャンル一覧 */
.genre-list {
  list-style: none;
  padding: 0;
  margin: var(--spacing-md) 0 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.genre-list__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  background-color: var(--color-bg-surface);
}

.genre-list__item--editing {
  flex-direction: column;
  align-items: stretch;
  gap: var(--spacing-sm);
}

.genre-list__name {
  font-size: var(--font-size-base);
  color: var(--color-text);
  flex: 1;
}

.genre-list__actions {
  display: flex;
  gap: var(--spacing-xs);
  flex-shrink: 0;
}

/* ジャンル編集フォーム */
.genre-edit-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.genre-edit-form__errors {
  color: var(--color-danger, #d93025);
  font-size: var(--font-size-sm);
}

.genre-edit-form__errors ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.genre-edit-form__input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  font-size: var(--font-size-base);
  background-color: var(--color-bg);
  color: var(--color-text);
}

.genre-edit-form__input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.15);
}

/* 削除ボタン（小） */
.btn--danger-outline {
  color: var(--color-danger, #d93025);
  border-color: var(--color-danger, #d93025);
  background: transparent;
}

.btn--danger-outline:hover {
  background-color: var(--color-danger, #d93025);
  color: #fff;
}

.btn--xs {
  padding: 0.2rem 0.6rem;
  font-size: var(--font-size-xs, 0.75rem);
}
/* ========================
   TOP ページ（LP）スタイル
   BEM 命名規則に従う
   ======================== */

/* ---- ヘッダー ---- */
.top-header {
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.top-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.top-header__logo {
  font-size: var(--font-size-2xl);
  font-weight: 900;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  text-decoration: none;
}

.top-header__logo:hover {
  text-decoration: none;
  opacity: 0.85;
}

.top-header__nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* ---- ヒーローセクション ---- */
.top-hero {
  background: linear-gradient(135deg, #e0ecff 0%, #f0f4ff 60%, #fefce8 100%);
  padding: var(--spacing-3xl) 0;
  text-align: center;
}

.top-hero__eyebrow {
  display: inline-block;
  background-color: var(--color-primary);
  color: #ffffff;
  font-size: var(--font-size-sm);
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: 99px;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-lg);
}

.top-hero__headline {
  font-size: var(--font-size-4xl);
  font-weight: 900;
  color: var(--color-text);
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.03em;
}

.top-hero__headline-accent {
  color: var(--color-primary);
}

.top-hero__lead {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  max-width: 560px;
  margin-inline: auto;
  margin-bottom: var(--spacing-xl);
  line-height: 1.7;
}

.top-hero__cta {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ---- 特徴セクション ---- */
.top-features {
  padding: var(--spacing-3xl) 0;
  background-color: var(--color-bg-surface);
}

.top-features__title {
  text-align: center;
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-2xl);
  color: var(--color-text);
}

.top-features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.top-feature-card {
  background-color: var(--color-bg);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}

.top-feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.top-feature-card__icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.top-feature-card__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.top-feature-card__description {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ---- CTA セクション ---- */
.top-cta {
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, #1d4ed8 100%);
  text-align: center;
}

.top-cta__title {
  font-size: var(--font-size-3xl);
  font-weight: 900;
  color: #ffffff;
  margin-bottom: var(--spacing-md);
}

.top-cta__description {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--spacing-xl);
}

.top-cta__actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.top-cta__actions .btn--primary {
  background-color: #ffffff;
  color: var(--color-primary);
  border-color: #ffffff;
}

.top-cta__actions .btn--primary:hover {
  background-color: #f0f4ff;
  border-color: #f0f4ff;
}

.top-cta__actions .btn--outline {
  border-color: rgba(255, 255, 255, 0.7);
  color: #ffffff;
}

.top-cta__actions .btn--outline:hover {
  background-color: rgba(255, 255, 255, 0.15);
}

/* ---- フッター ---- */
.top-footer {
  background-color: var(--color-text);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.top-footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
}

.top-footer__logo {
  font-size: var(--font-size-xl);
  font-weight: 900;
  color: #ffffff;
}

.top-footer__copy {
  font-size: var(--font-size-sm);
}

/* ========================
   レスポンシブ対応
   ======================== */

/* タブレット（768px 以下） */
@media (max-width: 768px) {
  .top-hero__headline {
    font-size: var(--font-size-3xl);
  }

  .top-features__grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .top-cta__title {
    font-size: var(--font-size-2xl);
  }
}

/* モバイル（480px 以下） */
@media (max-width: 480px) {
  .top-hero {
    padding: var(--spacing-2xl) 0;
  }

  .top-hero__headline {
    font-size: var(--font-size-2xl);
  }

  .top-hero__cta,
  .top-cta__actions {
    flex-direction: column;
    align-items: center;
  }

  .top-hero__cta .btn--lg,
  .top-cta__actions .btn--lg {
    width: 100%;
    max-width: 320px;
  }
}
/*
 * This is a manifest file that'll be compiled into application.css.
 *


 */

/* ========================
   CSS カスタムプロパティ
   ======================== */
:root {
  /* カラーパレット */
  --color-primary: #1B4332;          /* 深い森の緑 */
  --color-primary-hover: #2D6A4F;    /* 明るめの深緑 */
  --color-secondary: #8C5E3C;        /* ウッドブラウン */
  --color-secondary-hover: #734C2F;  /* 濃いウッドブラウン */
  --color-text: #2E251B;             /* 焦げ茶 */
  --color-text-muted: #6D6257;       /* 樹皮ベージュ */
  --color-bg: #FAF8F5;               /* 紙の白 */
  --color-bg-surface: #F3EFE9;       /* 薄いウッドベージュ */
  --color-border: #E3DDD3;           /* 優しいベージュ */
  --color-danger: #A63A50;           /* くすんだ赤 */
  --color-danger-hover: #8F2A3E;     /* 濃いエンジ */
  --color-success: #40916C;          /* リーフグリーン */

  /* タイポグラフィ */
  --font-sans: "Noto Sans JP", "Hiragino Sans", "Meiryo", sans-serif;
  --font-size-base: 1rem;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --line-height-base: 1.6;

  /* スペーシング */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* レイアウト */
  --container-max-width: 1100px;
  --container-padding: 1rem;
  --border-radius: 0.75rem;
  --border-radius-lg: 1rem;

  /* シャドウ */
  --shadow-sm: 0 1px 3px rgba(46, 37, 27, 0.05);
  --shadow-md: 0 4px 12px rgba(46, 37, 27, 0.08);
  --shadow-lg: 0 12px 30px rgba(46, 37, 27, 0.12);
}

/* ========================
   モダンCSS リセット
   ======================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

img,
picture {
  max-width: 100%;
  display: block;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

ul, ol {
  list-style: none;
}

/* ========================
   共通コンポーネント
   ======================== */

.container {
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background-color 0.2s, color 0.2s, border-color 0.2s, transform 0.2s, box-shadow 0.2s;
  text-decoration: none;
}

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

.btn--primary {
  background-color: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  text-decoration: none;
}

.btn--secondary {
  background-color: var(--color-bg-surface);
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn--secondary:hover {
  background-color: var(--color-border);
  text-decoration: none;
}

.btn--outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--outline:hover {
  background-color: var(--color-primary);
  color: #ffffff;
  text-decoration: none;
}

.btn--lg {
  padding: 0.9rem 2rem;
  font-size: var(--font-size-lg);
}

.btn--danger {
  background-color: var(--color-danger, #dc2626);
  color: #ffffff;
  border-color: var(--color-danger, #dc2626);
}

.btn--danger:hover {
  background-color: var(--color-danger-hover, #b91c1c);
  border-color: var(--color-danger-hover, #b91c1c);
  text-decoration: none;
}

.btn--danger-ghost {
  background-color: transparent;
  color: var(--color-danger);
  border-color: var(--color-danger);
}

.btn--danger-ghost:hover {
  background-color: rgba(166, 58, 80, 0.08);
  border-color: var(--color-danger);
  text-decoration: none;
}