/* ==========================================================================
   箱ダイヤ描画ソフト - モダン・シンプル スタイルシート
   - カラーパレット: ニュートラルグレー基調 + 深みのある青緑アクセント (#2F6F73)
   - 不要なグラデーション・ネオン・ガラス風エフェクト・絵文字過多を完全排除
   - 2ペイン分割 + ドラッグ幅変更対応
   - 1:1 ベクター印刷対応 (@media print)
   ========================================================================== */

:root {
  /* ニュートラルパレット */
  --bg-app: #f4f5f7;
  --bg-surface: #ffffff;
  --bg-subtle: #f8fafc;
  --bg-hover: #f1f5f9;
  --bg-active: #e2e8f0;

  /* 罫線・区切り */
  --border-color: #cbd5e1;
  --border-subtle: #e2e8f0;
  --border-focus: #2F6F73;

  /* テキスト色 */
  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;

  /* アクセントカラー: 落ち着いた青緑 (#2F6F73) */
  --primary: #2F6F73;
  --primary-hover: #26595d;
  --primary-active: #1d4346;
  --primary-light: #edf5f5;
  --primary-text: #ffffff;

  /* アラート・ステータス */
  --danger: #dc2626;
  --danger-light: #fef2f2;
  --warning: #d97706;
  --warning-light: #fffbeb;
  --success: #16a34a;

  /* フォント指定 */
  --font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", "Yu Gothic UI", "Meiryo UI", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
}

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--text-main);
  background-color: var(--bg-app);
  -webkit-font-smoothing: antialiased;
}

/* ==========================================================================
   アプリケーション全体レイアウト
   ========================================================================== */
.app-container {
  display: flex;
  flex-direction: column;
  width: 100vw;
  height: 100vh;
}

/* 上部メインバー */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 48px;
  padding: 0 16px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  z-index: 10;
  flex-shrink: 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.brand-icon {
  width: 24px;
  height: 24px;
  display: block;
  flex-shrink: 0;
  border-radius: 5px;
}

.brand-title {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-main);
  white-space: nowrap;
}

.beta-badge {
  display: inline-flex;
  align-items: center;
  padding: 1px 6px;
  border-radius: 999px;
  background: #e0e7ff;
  color: #3730a3;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.3;
  flex-shrink: 0;
}

.portal-back-link {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  height: 24px;
  padding: 0 9px;
  margin-left: 2px;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-subtle);
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
  transition: all 0.12s ease;
}

.portal-back-link:hover {
  color: var(--primary);
  border-color: var(--primary);
  background-color: var(--primary-light);
}

.preset-select-control {
  width: clamp(210px, 20vw, 275px);
}

.footer-portal-link {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}

.footer-portal-link:hover {
  text-decoration: underline;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.history-group {
  display: flex;
  align-items: center;
  gap: 2px;
  border-right: 1px solid var(--border-color);
  padding-right: 8px;
  margin-right: 4px;
}

/* メイン2ペイン領域 */
.main-workspace {
  display: flex;
  flex: 1;
  overflow: hidden;
  position: relative;
}

/* 左ペイン: 表形式エディタ */
.editor-pane {
  width: 660px;
  min-width: 460px;
  max-width: 950px;
  height: 100%;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-surface);
  border-right: 1px solid var(--border-color);
  flex-shrink: 0;
}

/* スプリッター（ドラッグで幅変更） */
.workspace-splitter {
  width: 5px;
  cursor: col-resize;
  background-color: transparent;
  transition: background-color 0.15s ease;
  z-index: 20;
}

.workspace-splitter:hover,
.workspace-splitter.dragging {
  background-color: var(--primary);
}

/* 右ペイン: プレビュー表示 */
.preview-pane {
  flex: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  background-color: #64748b22;
  overflow: hidden;
}

/* ==========================================================================
   ボタン・フォーム要素の統一デザイン
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  height: 30px;
  padding: 0 12px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 500;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-surface);
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.12s ease;
  white-space: nowrap;
  text-decoration: none;
}

.btn:hover:not(:disabled) {
  background-color: var(--bg-hover);
  border-color: var(--border-focus);
}

.btn:active:not(:disabled) {
  background-color: var(--bg-active);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
  background-color: var(--primary-hover);
  border-color: var(--primary-hover);
}

.btn-primary:active:not(:disabled) {
  background-color: var(--primary-active);
  border-color: var(--primary-active);
}

.btn-secondary {
  background-color: var(--bg-subtle);
}

.btn-sm {
  height: 28px;
  padding: 0 9px;
  font-size: 12px;
}

.btn-xs {
  height: 22px;
  padding: 0 6px;
  font-size: 11px;
}

.btn-icon {
  width: 24px;
  height: 24px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 3px;
  background: transparent;
  cursor: pointer;
  font-size: 12px;
  color: var(--text-muted);
}

.btn-icon:hover:not(:disabled) {
  background-color: var(--bg-hover);
  border-color: var(--border-color);
  color: var(--text-main);
}

.btn-icon.text-danger:hover:not(:disabled) {
  background-color: var(--danger-light);
  color: var(--danger);
  border-color: var(--danger);
}

/* セレクト・インプット */
.form-control, .form-select {
  height: 28px;
  padding: 0 8px;
  font-family: inherit;
  font-size: 12px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--bg-surface);
  color: var(--text-main);
  outline: none;
  transition: border-color 0.12s ease;
}

.form-control:focus, .form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-light);
}

/* ==========================================================================
   エディタタブ & ボディ
   ========================================================================== */
.editor-tabs {
  display: flex;
  background-color: var(--bg-subtle);
  border-bottom: 1px solid var(--border-color);
  overflow-x: auto;
  flex-shrink: 0;
}

.editor-tab-btn {
  padding: 8px 14px;
  border: none;
  border-bottom: 2px solid transparent;
  background: transparent;
  font-family: inherit;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}

.editor-tab-btn:hover {
  color: var(--text-main);
  background-color: var(--bg-hover);
}

.editor-tab-btn.active {
  color: var(--primary);
  font-weight: 700;
  border-bottom-color: var(--primary);
  background-color: var(--bg-surface);
}

.editor-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 12px;
}

.tab-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  flex-shrink: 0;
  gap: 8px;
}

.roster-selector-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.action-buttons {
  display: flex;
  align-items: center;
  gap: 6px;
}

.section-title-sm {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-main);
}

/* ==========================================================================
   スプレッドシート風グリッドテーブル
   ========================================================================== */
.table-scroll-container {
  flex: 1;
  overflow: auto;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--bg-surface);
}

.grid-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;
  text-align: left;
}

.grid-table thead th {
  position: sticky;
  top: 0;
  background-color: var(--bg-subtle);
  border-bottom: 1px solid var(--border-color);
  border-right: 1px solid var(--border-subtle);
  padding: 4px 3px;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
  z-index: 2;
}

.grid-table tbody td {
  border-bottom: 1px solid var(--border-subtle);
  border-right: 1px solid var(--border-subtle);
  padding: 2px 2px;
  vertical-align: middle;
  white-space: nowrap;
}

.grid-table tbody tr:hover td {
  background-color: var(--bg-hover);
}

.grid-table tbody tr.row-error td {
  background-color: var(--danger-light);
}

.grid-table tbody tr.row-warning td {
  background-color: var(--warning-light);
}

/* セル内入力フィールド */
.cell-input {
  width: 100%;
  height: 22px;
  padding: 0 2px;
  border: 1px solid transparent;
  border-radius: 3px;
  background: transparent;
  font-family: inherit;
  font-size: 11px;
  color: inherit;
  outline: none;
}

.cell-input-sm {
  height: 20px;
  font-size: 10px;
  padding: 0 2px;
}

.cell-input:hover {
  border-color: var(--border-subtle);
  background-color: var(--bg-surface);
}

.cell-input:focus {
  border-color: var(--primary);
  background-color: var(--bg-surface);
}

.cell-select {
  width: 100%;
  height: 22px;
  padding: 0 1px;
  border: 1px solid transparent;
  border-radius: 3px;
  background: transparent;
  font-family: inherit;
  font-size: 11px;
  color: inherit;
  outline: none;
}

.cell-select-sm {
  height: 20px;
  font-size: 10px;
  padding: 0 1px;
}

.cell-select:hover {
  border-color: var(--border-subtle);
  background-color: var(--bg-surface);
}

.cell-select:focus {
  border-color: var(--primary);
  background-color: var(--bg-surface);
}

.coupled-cell-flex {
  display: flex;
  align-items: center;
  gap: 2px;
}

.btn-icon-xs {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 2px;
  padding: 0 3px;
  height: 18px;
  font-size: 10px;
  cursor: pointer;
  color: var(--text-muted);
  line-height: 16px;
  flex-shrink: 0;
}

.btn-icon-xs:hover:not(:disabled) {
  background: var(--bg-hover);
  color: var(--text-main);
  border-color: var(--primary);
}

.btn-icon-xs:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.color-picker-cell {
  display: flex;
  align-items: center;
  gap: 4px;
}

.color-swatch {
  width: 22px;
  height: 22px;
  border: 1px solid var(--border-color);
  border-radius: 3px;
  cursor: pointer;
  padding: 0;
  background: none;
}

.color-hex-input {
  width: 68px;
  height: 22px;
  padding: 0 4px;
  font-size: 11px;
  border: 1px solid var(--border-subtle);
  border-radius: 3px;
}

.action-cell {
  text-align: center;
  white-space: nowrap;
}

.table-footer-info {
  margin-top: 8px;
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
}

/* 併結位置選択・3両以上ポップオーバー・部分継走・同期コントロール */
.coupled-cell-flex {
  display: flex;
  align-items: center;
  gap: 2px;
  min-width: 0;
}

.coupled-pos-select {
  width: 50px !important;
  flex: 0 0 50px;
  font-size: 10px !important;
  padding: 0 1px !important;
}

.coupled-multi-badge {
  flex: 1;
  min-width: 48px;
  height: 22px;
  padding: 0 4px;
  font-size: 10px;
  font-weight: 600;
  color: #1d4ed8;
  background-color: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 3px;
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: left;
}

.coupled-multi-badge:hover {
  background-color: #dbeafe;
}

#trainsGridTable .action-cell .btn-icon {
  padding: 1px 2px;
  font-size: 11px;
}

.sync-toolbar-group {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.sync-toggle-label {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-main);
  background: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 2px 7px;
  cursor: pointer;
  user-select: none;
}

.sync-toggle-label input {
  margin: 0;
  cursor: pointer;
}

.sync-status-badge {
  font-size: 11px;
  color: #047857;
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  border-radius: 4px;
  padding: 2px 7px;
  font-weight: 600;
}

.roster-name-cell {
  display: flex;
  align-items: center;
  gap: 4px;
}

.roster-name-badge {
  font-size: 10px;
  padding: 1px 5px;
  border-radius: 10px;
  white-space: nowrap;
  flex-shrink: 0;
  font-weight: 600;
}

.roster-name-badge.is-auto {
  background-color: #ecfdf5;
  color: #047857;
  border: 1px solid #a7f3d0;
}

.roster-name-badge.is-manual {
  background-color: #fef3c7;
  color: #b45309;
  border: 1px solid #fde68a;
}

.editor-inline-alert {
  margin-top: 6px;
  padding: 5px 8px;
  font-size: 11px;
  border-radius: 4px;
  background-color: #fef2f2;
  color: #b91c1c;
  border: 1px solid #fecaca;
}

.editor-floating-popover {
  position: fixed;
  z-index: 3000;
  min-width: 240px;
  max-width: 310px;
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.18);
  padding: 10px;
  font-size: 12px;
  color: var(--text-main);
}

.editor-popover-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 700;
  font-size: 12px;
  margin-bottom: 8px;
  padding-bottom: 5px;
  border-bottom: 1px solid var(--border-subtle);
}

.formation-preview-chip {
  background: #f8fafc;
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  padding: 4px 8px;
  font-family: monospace;
  font-size: 12px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 8px;
}

.formation-slot-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 8px;
  max-height: 180px;
  overflow-y: auto;
}

.formation-slot-item {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 3px 6px;
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  background: #ffffff;
}

.formation-slot-item.is-self {
  background: #fef2f2;
  border-color: #fca5a5;
  font-weight: 700;
}

.formation-slot-label {
  flex: 1;
  font-size: 12px;
}

.formation-add-row {
  display: flex;
  gap: 4px;
  align-items: center;
  margin-bottom: 8px;
}

.editor-popover-footer {
  display: flex;
  justify-content: flex-end;
  gap: 6px;
}

.split-station-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: 200px;
  overflow-y: auto;
}

/* ==========================================================================
   設定フォーム・グループ
   ========================================================================== */
.form-settings-container {
  overflow-y: auto;
  flex: 1;
  padding-right: 4px;
}

.settings-group {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 12px;
  margin-bottom: 12px;
}

.group-title {
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-main);
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 6px;
}

.form-row {
  margin-bottom: 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-row-grid {
  display: flex;
  gap: 12px;
}

.form-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
}

.radio-group-horizontal {
  display: flex;
  gap: 16px;
  align-items: center;
}

.radio-label, .checkbox-simple {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  font-size: 12px;
}

/* ==========================================================================
   生JSONエディタ
   ========================================================================== */
.raw-json-container {
  display: flex;
  flex-direction: column;
  flex: 1;
  overflow: hidden;
}

.json-actions-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.json-textarea {
  flex: 1;
  width: 100%;
  resize: none;
  padding: 10px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--bg-subtle);
  color: var(--text-main);
  font-size: 12px;
  line-height: 1.5;
  outline: none;
}

.json-textarea:focus {
  border-color: var(--primary);
  background-color: var(--bg-surface);
}

.alert-box {
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 12px;
  line-height: 1.4;
  margin-bottom: 8px;
}

.alert-warning {
  background-color: var(--warning-light);
  border: 1px solid #fde68a;
  color: #92400e;
}

.alert-danger {
  background-color: var(--danger-light);
  border: 1px solid #fecaca;
  color: #991b1b;
  white-space: pre-wrap;
}

/* ==========================================================================
   プレビューペイン & シート表示
   ========================================================================== */
.preview-toolbar {
  height: 40px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  flex-shrink: 0;
}

.preview-controls-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.preview-scroll-viewport {
  flex: 1;
  overflow: auto;
  display: block;
  text-align: center;
  padding: 24px;
  background-color: var(--bg-app);
}

.preview-page-wrapper {
  display: inline-block;
  margin: 0 auto 32px auto;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1), 0 1px 3px rgba(0, 0, 0, 0.08);
  background-color: #ffffff;
  vertical-align: top;
  position: relative;
  text-align: left;
}

.preview-page-sheet {
  background-color: #ffffff;
  transform-origin: top left;
  position: absolute;
  top: 0;
  left: 0;
}

.preview-page-sheet svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* ドロップダウンメニュー */
.dropdown-inline {
  position: relative;
  display: inline-block;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
  min-width: 220px;
  z-index: 50;
  margin-top: 4px;
  padding: 4px 0;
}

.dropdown-item {
  display: block;
  padding: 8px 12px;
  color: var(--text-main);
  text-decoration: none;
  font-size: 12px;
}

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

/* ユーティリティ */
.font-mono { font-family: var(--font-mono); }
.font-bold { font-weight: 700; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }

/* ==========================================================================
   使い方・ヘルプ モーダルダイアログ
   ========================================================================== */
.modal-backdrop[hidden] {
  display: none !important;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 1000;
}

.modal-dialog {
  width: min(880px, 100%);
  max-height: min(86vh, 820px);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.22);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px 12px;
  border-bottom: 1px solid var(--border-subtle);
  background-color: var(--bg-subtle);
}

.modal-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
}

.modal-subtitle {
  margin-top: 2px;
  font-size: 12px;
  color: var(--text-muted);
}

.modal-close-btn {
  width: 28px;
  height: 28px;
  font-size: 14px;
  flex-shrink: 0;
}

.modal-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 10px 20px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
}

.help-nav-btn {
  border: 1px solid var(--border-color);
  background-color: var(--bg-subtle);
  color: var(--text-main);
  font-family: inherit;
  font-size: 12px;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.12s ease;
}

.help-nav-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.help-nav-btn.active {
  background-color: var(--primary);
  border-color: var(--primary);
  color: var(--primary-text);
}

.modal-body {
  padding: 18px 22px;
  overflow-y: auto;
  flex: 1;
  line-height: 1.65;
}

.help-section + .help-section {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
}

.help-section h3 {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}

.help-section h4 {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--text-main);
  margin: 12px 0 6px;
}

.help-section code {
  font-family: var(--font-mono);
  font-size: 11.5px;
  background-color: var(--bg-hover);
  border: 1px solid var(--border-subtle);
  border-radius: 3px;
  padding: 1px 5px;
}

.help-section kbd {
  font-family: var(--font-mono);
  font-size: 11px;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-bottom-width: 2px;
  border-radius: 3px;
  padding: 1px 5px;
  color: var(--text-main);
}

.help-steps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.help-step {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  background-color: var(--bg-subtle);
}

.step-badge {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background-color: var(--primary);
  color: var(--primary-text);
  font-size: 12px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
}

.help-step p {
  margin-top: 3px;
  font-size: 12px;
  color: var(--text-muted);
}

.help-note-box {
  margin-top: 12px;
  padding: 9px 12px;
  border-left: 3px solid var(--primary);
  background-color: var(--primary-light);
  border-radius: 0 4px 4px 0;
  font-size: 12px;
}

.help-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.help-table th,
.help-table td {
  border: 1px solid var(--border-subtle);
  padding: 7px 10px;
  text-align: left;
  vertical-align: top;
}

.help-table th {
  background-color: var(--bg-subtle);
  font-weight: 600;
}

.help-table.compact td {
  padding: 5px 8px;
}

.help-list {
  margin-left: 18px;
  font-size: 12.5px;
}

.help-list li + li {
  margin-top: 5px;
}

.help-sublist {
  margin: 4px 0 2px 18px;
  font-size: 12px;
  color: var(--text-main);
}

.help-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.help-card {
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 12px 14px;
  background-color: var(--bg-subtle);
}

.help-card h4 {
  margin-top: 0;
}

.help-card p {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.help-support-box {
  margin-top: 14px;
  padding: 12px 14px;
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  background-color: var(--bg-subtle);
}

.help-support-box h4 {
  margin: 0 0 6px;
  font-size: 12.5px;
  color: var(--text-main);
}

.help-support-box p {
  margin: 0 0 8px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-muted);
}

.help-support-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 10px 20px;
  border-top: 1px solid var(--border-subtle);
  background-color: var(--bg-subtle);
}

.modal-header-actions,
.modal-footer-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.feedback-modal-dialog {
  width: min(760px, 100%);
  height: min(88vh, 820px);
  max-height: min(88vh, 820px);
}

.feedback-modal-body {
  position: relative;
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  background-color: #eaf1f1;
}

.feedback-loading {
  padding: 10px 20px;
  font-size: 12px;
  color: var(--text-muted);
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  text-align: center;
}

.feedback-loading[hidden] {
  display: none;
}

.feedback-iframe {
  width: 100%;
  flex: 1;
  min-height: 360px;
  border: 0;
  display: block;
}

@media (max-width: 720px) {
  .help-steps,
  .help-columns {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   印刷スタイル (@media print) - 1:1 ベクターPDF出力
   ========================================================================== */
@media print {
  @page {
    margin: 0;
  }

  html, body {
    width: 100% !important;
    height: 100% !important;
    overflow: visible !important;
    background: #ffffff !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  .app-header,
  .editor-pane,
  .workspace-splitter,
  .preview-toolbar,
  .modal-backdrop {
    display: none !important;
  }

  .main-workspace,
  .preview-pane,
  .preview-scroll-viewport {
    display: block !important;
    position: static !important;
    width: 100% !important;
    height: auto !important;
    padding: 0 !important;
    margin: 0 !important;
    overflow: visible !important;
    background: #ffffff !important;
  }

  .preview-page-wrapper {
    display: block !important;
    position: relative !important;
    width: 100% !important;
    height: 100vh !important;
    max-height: 99.4vh !important;
    margin: 0 !important;
    padding: 0 !important;
    box-shadow: none !important;
    background: transparent !important;
    page-break-after: always !important;
    break-after: page !important;
    page-break-inside: avoid !important;
    break-inside: avoid !important;
  }

  .preview-page-wrapper:last-child {
    page-break-after: avoid !important;
    break-after: avoid !important;
  }

  .preview-page-sheet {
    position: static !important;
    box-shadow: none !important;
    border-radius: 0 !important;
    transform: none !important;
    margin: 0 !important;
    padding: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    max-height: 99.4vh !important;
    display: block !important;
  }

  .preview-page-sheet svg {
    width: 100% !important;
    height: 100% !important;
    display: block !important;
  }
}