/* ============================================
   ラベルン - アプリ画面用CSS (app.css)
   原稿入力 → 言語選択 → PDF出力
   ============================================ */

/* --- アプリレイアウト --- */
.app {
  display: flex;
  min-height: calc(100vh - var(--header-height));
  margin-top: var(--header-height);
}

.app__sidebar {
  display: none;
  width: 280px;
  background: var(--color-white);
  border-right: 1px solid var(--color-border);
  padding: var(--spacing-xl);
  flex-shrink: 0;
  overflow-y: auto;
  height: calc(100vh - var(--header-height));
  position: sticky;
  top: var(--header-height);
}

.app__main {
  flex: 1;
  min-width: 0;
  padding: var(--spacing-xl) var(--spacing-lg);
  background: var(--color-bg-gray);
}

.app__panel {
  display: none;
  width: 400px;
  background: var(--color-white);
  border-left: 1px solid var(--color-border);
  flex-shrink: 0;
  overflow-y: auto;
  height: calc(100vh - var(--header-height));
  position: sticky;
  top: var(--header-height);
}

/* --- サイドバー --- */
.sidebar__title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-md);
}

.sidebar__list {
  list-style: none;
}

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

.sidebar__link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  text-decoration: none;
}

.sidebar__link:hover {
  background: var(--color-bg-gray);
  color: var(--color-text);
}

.sidebar__link.is-active {
  background: var(--color-bg-pale);
  color: var(--color-primary);
  font-weight: 600;
}

.sidebar__link-icon {
  width: 20px;
  text-align: center;
  flex-shrink: 0;
}

.sidebar__divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--spacing-lg) 0;
}

/* --- ステップインジケーター --- */
.step-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: var(--spacing-2xl);
  padding: 0 var(--spacing-md);
}

.step-indicator__item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  white-space: nowrap;
}

.step-indicator__number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-border);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  font-weight: 700;
  flex-shrink: 0;
  transition: all var(--transition-base);
}

.step-indicator__label {
  display: none;
}

.step-indicator__item.is-active .step-indicator__number {
  background: var(--color-primary);
  color: var(--color-white);
}

.step-indicator__item.is-active .step-indicator__label {
  color: var(--color-text);
  font-weight: 600;
}

.step-indicator__item.is-completed .step-indicator__number {
  background: var(--color-success);
  color: var(--color-white);
}

.step-indicator__connector {
  width: 40px;
  height: 2px;
  background: var(--color-border);
  margin: 0 var(--spacing-xs);
  flex-shrink: 0;
}

.step-indicator__item.is-completed + .step-indicator__connector {
  background: var(--color-success);
}

/* --- フォーム共通 --- */
.form-group {
  margin-bottom: var(--spacing-lg);
}

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

.form-label__required {
  color: var(--color-error);
  margin-left: var(--spacing-xs);
}

.form-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: var(--spacing-xs);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  border-color: var(--color-text-muted);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(194, 65, 12, 0.1);
  outline: none;
}

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

.form-error {
  font-size: var(--font-size-xs);
  color: var(--color-error);
  margin-top: var(--spacing-xs);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

/* --- 原稿入力フォーム --- */
.label-form {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
}

.label-form__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

.label-form__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
}

.label-form__section {
  margin-bottom: var(--spacing-2xl);
}

.label-form__section-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-primary-light);
}

/* 成分入力テーブル */
.ingredient-table {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.ingredient-table th,
.ingredient-table td {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  border-bottom: 1px solid var(--color-border);
}

.ingredient-table th {
  background: var(--color-bg-gray);
  font-weight: 600;
  text-align: left;
}

.ingredient-table input {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
}

.ingredient-table input:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 2px rgba(194, 65, 12, 0.1);
}

.ingredient-table__add {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  cursor: pointer;
  border: none;
  background: none;
}

.ingredient-table__add:hover {
  color: var(--color-primary-hover);
}

/* --- 言語選択グリッド --- */
.language-select {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
}

.language-select__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
}

.language-select__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
}

.language-select__count {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.language-select__count-num {
  font-weight: 700;
  color: var(--color-primary);
}

.language-select__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm);
}

.language-select__item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  user-select: none;
}

.language-select__item:hover {
  border-color: var(--color-primary-light);
  background: var(--color-bg-pale);
}

.language-select__item.is-selected {
  border-color: var(--color-primary);
  background: var(--color-bg-pale);
}

.language-select__item.is-disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.language-select__checkbox {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-base);
}

.language-select__item.is-selected .language-select__checkbox {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.language-select__flag {
  font-size: var(--font-size-xl);
  flex-shrink: 0;
}

.language-select__info {
  flex: 1;
  min-width: 0;
}

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

.language-select__native {
  font-size: var(--font-size-xs);
  color: var(--color-text-light);
}

.language-select__actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

/* --- ラベルプレビュー --- */
.label-preview {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.label-preview__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-xl);
  background: var(--color-bg-gray);
  border-bottom: 1px solid var(--color-border);
}

.label-preview__title {
  font-size: var(--font-size-sm);
  font-weight: 700;
}

.label-preview__lang-selector {
  display: flex;
  gap: var(--spacing-xs);
}

.label-preview__lang-tab {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
  border-radius: var(--radius-sm);
  color: var(--color-text-light);
  background: transparent;
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all var(--transition-base);
}

.label-preview__lang-tab:hover {
  border-color: var(--color-primary-light);
}

.label-preview__lang-tab.is-active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.label-preview__body {
  padding: var(--spacing-xl);
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.label-preview__canvas {
  width: 100%;
  max-width: 360px;
  min-height: 320px;
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  text-align: center;
}

.label-preview__canvas.has-content {
  border-style: solid;
  border-color: var(--color-border);
  align-items: stretch;
  justify-content: flex-start;
  color: var(--color-text);
}

.label-preview__placeholder-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.3;
}

.label-preview__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-xl);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-gray);
}

.label-preview__info {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* --- PDFプレビュー --- */
.pdf-preview {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.pdf-preview__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-xl);
  background: var(--color-secondary);
  color: var(--color-white);
}

.pdf-preview__title {
  font-size: var(--font-size-sm);
  font-weight: 700;
}

.pdf-preview__actions {
  display: flex;
  gap: var(--spacing-sm);
}

.pdf-preview__body {
  padding: var(--spacing-xl);
  background: #525659;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pdf-preview__page {
  background: var(--color-white);
  width: 100%;
  max-width: 420px;
  min-height: 594px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  padding: var(--spacing-2xl);
}

.pdf-preview__empty {
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: var(--font-size-sm);
}

.pdf-preview__empty-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.3;
}

.pdf-preview__footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-md) var(--spacing-xl);
  border-top: 1px solid var(--color-border);
}

.pdf-preview__page-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

/* --- ステップナビゲーション (モバイル下部固定) --- */
.step-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  margin-top: var(--spacing-2xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.step-nav__back {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.step-nav__back:hover {
  color: var(--color-text);
}

/* --- ローディング --- */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.9);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}

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

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

.loading-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

/* --- 通知トースト --- */
.toast {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  padding: var(--spacing-md) var(--spacing-xl);
  background: var(--color-secondary);
  color: var(--color-white);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  box-shadow: var(--shadow-lg);
  z-index: 3000;
  transform: translateY(100px);
  opacity: 0;
  transition: all var(--transition-slow);
}

.toast.is-visible {
  transform: translateY(0);
  opacity: 1;
}

.toast--success {
  background: var(--color-success);
}

.toast--error {
  background: var(--color-error);
}

/* ============================================
   レスポンシブ: タブレット (768px+)
   ============================================ */
@media (min-width: 768px) {
  .app__sidebar {
    display: block;
  }

  .step-indicator__label {
    display: inline;
  }

  .step-indicator__connector {
    width: 60px;
  }

  .language-select__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .label-form {
    padding: var(--spacing-2xl);
  }
}

/* ============================================
   レスポンシブ: デスクトップ (1024px+)
   ============================================ */
@media (min-width: 1024px) {
  .app__panel {
    display: block;
  }

  .language-select__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .app__main {
    padding: var(--spacing-2xl);
  }
}

/* ============================================
   モバイルファースト強化
   ============================================ */

/* --- モバイルボトムナビ --- */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: calc(56px + env(safe-area-inset-bottom));
  padding-bottom: env(safe-area-inset-bottom);
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  z-index: 100;
  box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
}

.mobile-bottom-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-around;
  height: 56px;
}

.mobile-bottom-nav__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 6px 12px;
  font-size: 10px;
  color: var(--color-text-muted);
  text-decoration: none;
  border: none;
  background: none;
  cursor: pointer;
  min-width: 64px;
  min-height: 48px;
}

.mobile-bottom-nav__item.is-active {
  color: var(--color-primary);
}

.mobile-bottom-nav__item svg {
  width: 24px;
  height: 24px;
}

/* --- サイドバーモバイルオーバーレイ化 --- */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.5);
  z-index: 199;
}

.sidebar-overlay.is-visible {
  display: block;
}

/* --- モバイル専用レスポンシブ --- */
@media (max-width: 767px) {
  .mobile-bottom-nav {
    display: block;
  }

  .app__main {
    padding-bottom: calc(72px + env(safe-area-inset-bottom));
  }

  .app__sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 200;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
  }

  .app__sidebar.is-open {
    display: block;
    transform: translateX(0);
  }

  .step-indicator {
    padding: var(--spacing-sm) var(--spacing-md);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .step-indicator::-webkit-scrollbar {
    display: none;
  }

  .step-indicator__connector {
    width: 24px;
    min-width: 24px;
  }

  .form-input,
  .form-select,
  .form-textarea {
    font-size: 16px; /* iOSのズーム防止 */
    padding: 12px 14px;
  }

  .language-select__grid {
    grid-template-columns: 1fr;
  }

  .toast {
    left: var(--spacing-md);
    right: var(--spacing-md);
    bottom: calc(72px + env(safe-area-inset-bottom));
    max-width: none;
  }
}