/**
 * QRCrashTest - スタイルシート
 *
 * QRコード破壊耐性クラッシュテストツール
 *
 * 構成:
 * 1. 基本設定（リセット、フォント、レイアウト）
 * 2. ヘッダー
 * 3. タブシステム
 * 4. クラッシュテストタブ（QR読み込み、キャンバス、ダメージツール）
 * 5. 解析タブ（構造可視化、レイヤー切り替え）
 * 6. 座学タブ（アコーディオン、スライダー）
 * 7. 共通コンポーネント（パネル、ボタン、コントロール）
 * 8. ローディング表示
 * 9. レスポンシブ対応
 */

/* ============================================================
   基本設定
   ============================================================ */

/* CSSリセット */
*,
*::before,
*::after {
  box-sizing: border-box;
}

/* ベーススタイル */
body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f5f5f7;
  color: #222;
  font-size: 1.05rem;
  line-height: 1.6;
}

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

.file-input-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 0.5rem; }
.file-picker-label { display: inline-flex; align-items: center; min-height: 44px; padding: 0.45rem 0.9rem; border: 1px solid #777; border-radius: 6px; background: #fff; cursor: pointer; }
.file-picker-label:hover { background: #f0f0f0; }

/* ============================================================
   ヘッダー
   ============================================================ */

header {
  position: relative;
  padding: 1.2rem 1.5rem 0.5rem;
  border-bottom: 1px solid #ddd;
  background: #ffffff;
  text-align: center;
}

.language-toggle {
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  min-height: 44px;
  padding: 0.45rem 0.9rem;
  border: 1px solid #777;
  border-radius: 8px;
  background: #fff;
  color: #222;
  cursor: pointer;
}

header h1 {
  margin: 0;
  font-size: 1.8rem;
}

.subtitle {
  margin: 0.25rem 0 0;
  font-size: 1rem;
  color: #555;
}

/* ============================================================
   メインコンテンツ
   ============================================================ */

main {
  padding: 0.8rem 1.5rem 3rem;
  max-width: 1200px;
  margin: 0 auto;
  min-height: calc(100vh - 200px);
}

/* ============================================================
   タブシステム
   ============================================================ */

.tabs {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 0.8rem;
  overflow-x: auto;
  padding: 0.15rem 0.15rem 0.4rem;
  scroll-padding-inline: 0.15rem;
  scrollbar-width: thin;
}

.tab-button {
  flex: 0 0 auto;
  min-height: 44px;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  border: 1px solid #ccc;
  background: #f0f0f0;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.2s;
}

.tab-button.active {
  background: #222;
  color: #fff;
  border-color: #222;
}

/* タブコンテンツ表示切り替え */
.tab-content {
  display: none;
}

.tab-content.active {
  display: flex;
  gap: 1rem;
  flex-direction: column;
}

/* ============================================================
   クラッシュテストタブ
   ============================================================ */

/* QR読み込みセクション（左右2カラムレイアウト） */

.load-section {
  width: 100%;
  margin: 0 auto 1.5rem;
  display: flex;
  gap: 1.5rem;
}

.load-section-left {
  flex: 1;
  min-width: 0;
}

.load-section-right {
  flex: 1;
  min-width: 0;
}

.load-drop-zone {
  padding: 1.5rem;
  border: 2px dashed #ccc;
  border-radius: 8px;
  background: #fafafa;
  transition: all 0.3s;
  text-align: center;
}

.load-drop-zone.drag-over {
  border-color: #667eea;
  background: #f0f4ff;
  transform: scale(1.02);
}

.crash-main-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  width: 100%;
}

.crash-top-row {
  display: flex;
  gap: 1.5rem;
  width: 100%;
}

.crash-qr-area {
  flex: 1;
  min-width: 0;
  max-width: 520px;
}

.crash-info-area {
  flex: 1;
  min-width: 0;
}

.crash-bottom-row {
  display: flex;
  gap: 1.5rem;
  width: 100%;
}

.crash-tools-area {
  flex: 1;
  min-width: 0;
}

.crash-presets-area {
  flex: 1;
  min-width: 0;
}

/* ============================================================
   解析タブ - レイアウト
   ============================================================ */

/* ペインレイアウト（左右2カラム） */
.pane {
  flex: 1;
  min-width: 0;
}

.pane-left {
  max-width: 520px;
}

.pane-right {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  margin-bottom: 2rem;
}

/* 解析タブは縦並び（説明が上、ペインが下） */
#tab-analyze.active {
  flex-direction: column;
}

/* 解析タブのペイン部分は横並び */
.analyze-panes {
  display: flex;
  flex-direction: row;
  gap: 1.5rem;
  width: 100%;
}

/* ============================================================
   座学タブ - レイアウト
   ============================================================ */

#tab-study.active {
  flex-direction: column;
}

/* ============================================================
   キャンバス（共通）
   ============================================================ */

.canvas-wrapper {
  position: relative;
  width: 500px;
  max-width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 8px;
  border: 1px solid #ccc;
  background: #fafafa;
  overflow: hidden;
  transition: border-color 0.3s;
}

.canvas-wrapper.drag-over {
  border-color: #0066cc;
  border-width: 3px;
  background: #e6f2ff;
}

.canvas-wrapper canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
}

#baseCanvas { z-index: 0; }
#overlayCanvas { z-index: 1; }
#effectCanvas { z-index: 2; display: none; pointer-events: none; }
#effectCanvas.visible { display: block; }
#previewCanvas { z-index: 3; }
#damageHeatmapCanvas { z-index: 4; }
.canvas-wrapper.effects-active #baseCanvas,
.canvas-wrapper.effects-active #overlayCanvas { opacity: 0; }

#previewCanvas {
  pointer-events: none;
  opacity: 0.6;
}

#damageHeatmapCanvas {
  pointer-events: none;
  opacity: 0.4;
  display: none;
}

.experiment-controls,
.experiment-result {
  margin: 1rem 0;
  padding: 1rem;
  border: 1px solid #d8d8de;
  border-radius: 8px;
  background: #fafafa;
}

.experiment-seed-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
}

.experiment-seed-row input {
  flex: 1 1 10rem;
  min-height: 44px;
}

.experiment-seed-row button { min-height: 44px; }
.repeat-note { margin-top: 0.5rem; color: #555; }
.repeat-note[hidden] { display: none; }

.effect-controls {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.effect-controls label { display: grid; gap: 0.25rem; }
.effect-controls input[type="range"] { min-height: 44px; width: 100%; }
.preset-category { margin: 1.25rem 0 0.5rem; font-size: 1.05rem; }
.experiment-result dl { margin: 0; }
.experiment-result dl div { display: grid; grid-template-columns: minmax(8rem, 0.8fr) 1.2fr; gap: 0.75rem; padding: 0.25rem 0; }
.experiment-result dt { font-weight: 700; }
.experiment-result dd { margin: 0; overflow-wrap: anywhere; }
.experiment-limit { margin-bottom: 0; color: #555; }

#damageHeatmapCanvas.visible {
  display: block;
}

/* カーソルスタイル（ツール別） */
.canvas-wrapper.cursor-pen { cursor: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16"><circle cx="8" cy="8" r="3" fill="black"/></svg>') 8 8, crosshair; }
.canvas-wrapper.cursor-dust { cursor: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20"><circle cx="10" cy="10" r="6" fill="none" stroke="gray" stroke-width="2"/></svg>') 10 10, crosshair; }
.canvas-wrapper.cursor-shadow { cursor: crosshair; }
.canvas-wrapper.cursor-mask { cursor: cell; }
.canvas-wrapper.cursor-noise { cursor: crosshair; }

.no-image-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: repeating-linear-gradient(
    45deg,
    #f9f9f9,
    #f9f9f9 10px,
    #f1f1f1 10px,
    #f1f1f1 20px
  );
  color: #777;
  font-size: 1rem;
  padding: 1rem;
}

/* ============================================================
   共通コンポーネント - パネル
   ============================================================ */

/* 基本パネルスタイル */
.panel {
  background: #ffffff;
  border-radius: 8px;
  padding: 0.75rem 0.9rem;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
  border: 1px solid #e0e0e0;
}

.panel h2 {
  margin: 0 0 0.4rem;
  font-size: 1.1rem;
}

/* 解析タブの説明エリア（グラデーション背景） */
.analysis-intro {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 1rem 1.2rem;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
  width: 100%;
}

.analysis-intro h3 {
  margin: 0 0 0.6rem;
  font-size: 1.15rem;
  font-weight: 600;
}

.analysis-intro p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
  opacity: 0.95;
}

.section-description {
  background: #f8f9fa;
  border-left: 3px solid #667eea;
  padding: 0.7rem 0.9rem;
  margin-bottom: 0.8rem;
  border-radius: 4px;
}

.section-description p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.6;
  color: #444;
}

.section-description strong {
  color: #667eea;
  font-weight: 600;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 0 0 0.4rem;
  font-size: 1.1rem;
}

.toggle-panel {
  background: transparent;
  border: none;
  font-size: 1.2rem;
  padding: 0.2rem 0.5rem;
  cursor: pointer;
  color: #666;
  border-radius: 4px;
}

.toggle-panel:hover {
  background: #f0f0f0;
  color: #222;
}

.panel-content {
  overflow: visible;
  transition: max-height 0.3s ease-out, opacity 0.3s ease-out;
}

.panel-content.collapsed {
  max-height: 0 !important;
  opacity: 0;
  margin: 0;
  padding: 0;
  overflow: hidden;
}

.hint {
  margin: 0.3rem 0 0;
  font-size: 0.9rem;
  color: #666;
}

.file-input-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.25rem;
}

/* ============================================================
   ダメージツール - 現在のツール表示
   ============================================================ */

.current-tool-display {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border-radius: 8px;
  margin-bottom: 0.6rem;
  font-weight: bold;
  font-size: 1rem;
}

#currentToolIcon {
  font-size: 1.5rem;
}

/* ============================================================
   ダメージツール - ツール選択ボタン
   ============================================================ */
.tool-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.25rem;
  font-size: 0.92rem;
}

.tool-button {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: 0.6rem 0.5rem;
  border: 2px solid #ddd;
  border-radius: 8px;
  background: #fafafa;
  cursor: pointer;
  transition: all 0.2s;
  flex: 1;
  min-width: 80px;
}

.tool-button:hover {
  background: #f0f0f0;
  border-color: #999;
  transform: translateY(-2px);
}

.tool-button input[type="radio"] {
  display: none;
}

.tool-button input[type="radio"]:checked + .tool-icon {
  transform: scale(1.3);
}

.tool-button:has(input[type="radio"]:checked) {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border-color: #667eea;
  box-shadow: 0 4px 8px rgba(102, 126, 234, 0.3);
}

.tool-icon {
  font-size: 1.5rem;
  transition: transform 0.2s;
}

.tool-label {
  font-size: 0.82rem;
  text-align: center;
}

.control-row {
  margin-top: 0.45rem;
  font-size: 0.92rem;
}

.control-row input[type="range"] {
  width: 100%;
}

.control-row select {
  margin-left: 0.4rem;
}

/* ============================================================
   ツールチップ（？アイコン）
   ============================================================ */

/* ツールチップアイコン本体 */
.tooltip-icon {
  display: inline-block;
  width: 16px;
  height: 16px;
  line-height: 16px;
  text-align: center;
  background: #667eea;
  color: white;
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: bold;
  margin-left: 0.3rem;
  cursor: help;
  position: relative;
  vertical-align: middle;
}

/* ツールチップ吹き出し（ホバー時に表示） */
.tooltip-icon::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  background: rgba(0, 0, 0, 0.9);
  color: white;
  padding: 0.6rem 0.8rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: normal;
  white-space: normal;
  width: 220px;
  text-align: left;
  line-height: 1.4;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 1000;
}

.tooltip-icon::before {
  content: "";
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-2px);
  border: 6px solid transparent;
  border-top-color: rgba(0, 0, 0, 0.9);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 1000;
}

.tooltip-icon:hover::after,
.tooltip-icon:hover::before {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.button-row {
  margin-top: 0.6rem;
}

button {
  border-radius: 999px;
  border: 1px solid #ccc;
  background: #f0f0f0;
  padding: 0.4rem 0.9rem;
  cursor: pointer;
  font-size: 0.92rem;
}

button:hover {
  background: #e4e4e4;
}

.status-grid {
  display: grid;
  grid-template-columns: 1fr;
  row-gap: 0.25rem;
  font-size: 0.92rem;
}

.status-grid .label {
  color: #555;
}

.url-box {
  margin-top: 0.6rem;
}

.decoded-data {
  margin: 0.2rem 0 0;
  padding: 0.4rem;
  background: #f7f7f7;
  border-radius: 4px;
  border: 1px solid #e2e2e2;
  font-size: 0.88rem;
  max-height: 140px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

.control-column {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.92rem;
  margin-top: 0.25rem;
}

/* Study */

.study-article {
  background: #ffffff;
  border-radius: 8px;
  padding: 1rem 1.1rem;
  border: 1px solid #e0e0e0;
  width: 100%;
  margin-bottom: 2rem;
}

.study-intro {
  padding: 0.8rem 1rem;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border-radius: 8px;
  margin-bottom: 1rem;
  font-size: 1.02rem;
  text-align: center;
}

.study-section {
  margin-bottom: 0.8rem;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  overflow: hidden;
}

.study-section-header {
  margin: 0;
}

.study-toggle {
  width: 100%;
  background: #f5f5f5;
  border: none;
  padding: 0.8rem 1rem;
  text-align: left;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  transition: background 0.2s;
  color: #333;
}

.study-toggle:hover {
  background: #e8e8e8;
}

.toggle-icon {
  font-size: 0.8rem;
  transition: transform 0.3s;
  display: inline-block;
}

.study-toggle.active .toggle-icon {
  transform: rotate(90deg);
}

.study-section-content {
  padding: 1rem 1.2rem;
  background: #ffffff;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out, padding 0.3s ease-out;
}

.study-section-content.collapsed {
  padding-top: 0;
  padding-bottom: 0;
}

.study-section-content:not(.collapsed) {
  max-height: 2000px;
}

.study-article h2 {
  margin-top: 0;
}

.study-article h3 {
  margin-top: 1rem;
  font-size: 1.15rem;
  color: #555;
}

.study-article h4 {
  margin-top: 0.8rem;
  margin-bottom: 0.4rem;
  font-size: 1.05rem;
  color: #667eea;
}

.study-article p {
  line-height: 1.7;
  font-size: 1rem;
  margin: 0.5rem 0;
}

.study-article ul {
  padding-left: 1.3rem;
  font-size: 0.98rem;
  line-height: 1.6;
  margin: 0.5rem 0;
}

.study-article ol {
  padding-left: 1.3rem;
  font-size: 0.98rem;
  line-height: 1.6;
  margin: 0.5rem 0;
}

.study-article li {
  margin-bottom: 0.4rem;
}

.study-article .note {
  font-size: 0.92rem;
  color: #666;
  font-style: italic;
  padding: 0.5rem;
  background: #f9f9f9;
  border-left: 3px solid #999;
  margin: 0.5rem 0;
}

/* 図解 */
.diagram-container {
  margin: 1rem 0;
  padding: 1rem;
  background: #fafafa;
  border-radius: 8px;
  border: 1px solid #e0e0e0;
  text-align: center;
}

.diagram-container svg {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

.diagram-caption {
  margin: 0.5rem 0 0;
  font-size: 0.9rem;
  color: #666;
  font-style: italic;
  text-align: center;
}

/* QRコード実例 */
.qr-example-wrapper {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  margin-top: 1rem;
}

.qr-example-main {
  position: relative;
  flex: 1;
  max-width: 300px;
}

.qr-sample-image {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 4px;
}

.qr-annotation-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.qr-example-legend {
  flex: 1;
  text-align: left;
}

.qr-example-legend h5 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  color: #333;
}

.legend-list {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0;
}

.legend-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.6rem;
  font-size: 0.88rem;
  line-height: 1.4;
}

.legend-color {
  width: 20px;
  height: 20px;
  display: inline-block;
  border-radius: 3px;
  border: 1px solid #ddd;
  flex-shrink: 0;
}

.legend-note {
  margin-top: 0.8rem;
  padding: 0.5rem;
  background: #fff3cd;
  border-left: 3px solid #ffc107;
  font-size: 0.9rem;
  color: #856404;
  border-radius: 3px;
}

/* 色分けQRコード */
.qr-diagram-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.qr-diagram-display {
  position: relative;
  max-width: 350px;
  width: 100%;
}

.qr-colored-diagram {
  width: 100%;
  height: auto;
  border: 2px solid #ddd;
  border-radius: 4px;
  background: white;
  display: block;
}

.qr-highlight-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s;
}

.qr-highlight-overlay.visible {
  opacity: 1;
}

.qr-url-display {
  font-size: 0.9rem;
  color: #667eea;
  background: #f0f0f0;
  padding: 0.5rem 0.8rem;
  border-radius: 4px;
  word-break: break-all;
  margin: 0;
  text-align: center;
}

.qr-coordinate-display {
  font-size: 0.92rem;
  color: #555;
  background: #fafafa;
  padding: 0.4rem 0.8rem;
  border-radius: 4px;
  margin: 0.3rem 0 0 0;
  text-align: center;
  font-family: 'Courier New', monospace;
}

/* 構成要素リスト */
.component-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
}

.component-list li {
  padding: 0.8rem 1rem;
  margin-bottom: 0.5rem;
  background: #fafafa;
  border-radius: 6px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
  line-height: 1.6;
}

.component-list li:hover {
  background: #fff;
  border-color: #667eea;
  box-shadow: 0 2px 8px rgba(102, 126, 234, 0.2);
  transform: translateX(5px);
}

.component-list li[data-component="finder"]:hover {
  border-color: #2196F3;
}

.component-list li[data-component="timing"]:hover {
  border-color: #4CAF50;
}

.component-list li[data-component="format"]:hover {
  border-color: #9C27B0;
}

.component-list li[data-component="data"]:hover {
  border-color: #FF9800;
}

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

/* タブレット以下（768px以下） */
@media (max-width: 768px) {
  /* Crash Test タブのモバイルレイアウト */
  .load-section {
    flex-direction: column;
  }

  .crash-top-row {
    flex-direction: column;
  }

  .crash-qr-area {
    max-width: 100%;
  }

  .crash-bottom-row {
    flex-direction: column;
  }

  .qr-example-wrapper {
    flex-direction: column;
  }

  .qr-example-main {
    max-width: 100%;
  }

  .qr-colored-example {
    flex-direction: column;
    align-items: center;
  }

  .qr-colored-diagram {
    max-width: 250px;
  }

  .qr-colored-legend {
    max-width: 100%;
  }

  /* 解析タブのモバイル対応 */
  .analysis-intro {
    padding: 0.8rem 1rem;
    margin-bottom: 1rem;
  }

  .analysis-intro h3 {
    font-size: 1.05rem;
  }

  .analysis-intro p {
    font-size: 0.9rem;
  }

  .analyze-panes {
    flex-direction: column;
  }

  .section-description {
    padding: 0.6rem 0.8rem;
  }

  .section-description p {
    font-size: 0.88rem;
  }
}

/* Analysis */

.analysis-wrapper {
  background: #ffffff;
  margin-bottom: 2rem;
}

.analyze-button {
  width: 100%;
  padding: 0.7rem 1rem;
  font-size: 1rem;
  font-weight: 600;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.analyze-button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.5);
}

.analyze-button:active:not(:disabled) {
  transform: translateY(0);
}

.analyze-button:disabled {
  background: #ccc;
  cursor: not-allowed;
  box-shadow: none;
}

/* Footer */

footer {
  margin-top: 2rem;
  border-top: 1px solid #ddd;
  padding: 0.8rem 1.5rem 1.2rem;
  background: #fafafa;
  text-align: center;
  clear: both;
}

.footer {
  font-size: 0.92rem;
  color: #555;
}

.footer a {
  color: #0066cc;
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

/* Responsive */

@media (max-width: 960px) {
  main {
    padding: 0.8rem 0.8rem 1.2rem;
  }

  .tab-content.active {
    flex-direction: column;
  }

  .pane-left {
    max-width: 100%;
  }

  .canvas-wrapper {
    margin: 0 auto;
  }
}

@media (max-width: 600px) {
  header { padding-top: 0.75rem; }

  .language-toggle {
    position: static;
    display: block;
    margin: 0 0 0.5rem auto;
  }

  .effect-controls { grid-template-columns: 1fr; }

  .experiment-result dl div { grid-template-columns: 1fr; gap: 0; }

  .tabs {
    width: 100%;
    min-width: 0;
    contain: inline-size;
  }

  .tab-button {
    flex: 0 0 auto;
    text-align: center;
  }

  input[type="file"],
  select {
    width: 100%;
    max-width: 100%;
    min-width: 0;
  }

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

  .tooltip-icon::after {
    right: -0.25rem;
    left: auto;
    max-width: calc(100vw - 3rem);
    transform: translateY(-8px);
  }

  .tooltip-icon:hover::after {
    transform: translateY(0);
  }

  /* モバイル最適化：タッチ操作向けにボタンサイズ拡大 */
  .tool-button {
    min-width: 70px;
    padding: 0.8rem 0.6rem;
  }

  .preset-item {
    flex-direction: column;
    align-items: stretch;
  }

  .preset-button {
    font-size: 0.95rem;
    padding: 0.7rem 1rem;
    width: 100%;
  }

  button {
    padding: 0.6rem 1rem;
    font-size: 0.95rem;
  }
}

/* ステータスバッジ */
.status-badge-container {
  margin-bottom: 0.8rem;
  display: flex;
  justify-content: center;
}

.status-badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  font-weight: bold;
  font-size: 0.9rem;
  transition: all 0.3s;
  text-align: center;
  min-width: 120px;
}

.status-badge.status-idle {
  background: #e0e0e0;
  color: #666;
}

.status-badge.status-success {
  background: #4caf50;
  color: white;
  animation: pulse-success 0.5s ease-out;
}

.status-badge.status-fail {
  background: #f44336;
  color: white;
  animation: pulse-fail 0.5s ease-out;
}

@keyframes pulse-success {
  0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(76, 175, 80, 0.7); }
  50% { transform: scale(1.05); box-shadow: 0 0 0 10px rgba(76, 175, 80, 0); }
  100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(76, 175, 80, 0); }
}

@keyframes pulse-fail {
  0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(244, 67, 54, 0.7); }
  50% { transform: scale(1.05); box-shadow: 0 0 0 10px rgba(244, 67, 54, 0); }
  100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(244, 67, 54, 0); }
}

/* プリセットボタン */
.preset-item {
  display: flex;
  gap: 1rem;
  align-items: center;
  padding: 0.8rem;
  margin-bottom: 0.8rem;
  background: #fafafa;
  border-radius: 8px;
  border: 1px solid #e0e0e0;
}

.preset-item:last-child {
  margin-bottom: 0;
}

.preset-info {
  flex: 1;
  min-width: 0;
}

.preset-info strong {
  display: block;
  font-size: 1rem;
  margin-bottom: 0.3rem;
  color: #333;
}

.preset-desc {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.5;
  color: #666;
}

.preset-button {
  flex-shrink: 0;
  padding: 0.6rem 1.2rem;
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s;
  font-weight: 600;
  white-space: nowrap;
}

.preset-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(245, 87, 108, 0.4);
}

.preset-button:active {
  transform: translateY(0);
}

/* サンプルQR選択 */
.sample-qr-section {
  margin-top: 0.6rem;
  padding-top: 0.6rem;
  border-top: 1px solid #e0e0e0;
}

.sample-qr-section select {
  width: 100%;
  padding: 0.4rem;
  margin-top: 0.3rem;
  border-radius: 4px;
  border: 1px solid #ccc;
  font-size: 0.92rem;
}

/* QR詳細情報 */
.qr-details {
  margin-top: 0.8rem;
  padding-top: 0.8rem;
  border-top: 1px solid #e0e0e0;
}

.qr-details h3 {
  margin: 0 0 0.5rem;
  font-size: 0.98rem;
  color: #555;
}

.detail-grid {
  display: grid;
  grid-template-columns: 1fr;
  row-gap: 0.25rem;
  font-size: 0.9rem;
}

/* ============================================================
   ローディング表示
   ============================================================ */

/* ローディングオーバーレイ（全画面） */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  display: none;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  gap: 1.5rem;
  z-index: 9999;
  color: white;
  backdrop-filter: blur(2px);
}

/* 表示状態（最小200ms保証） */
.loading-overlay.visible {
  display: flex;
  animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.loading-overlay p {
  font-size: 1.2rem;
  font-weight: 600;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

/* スピナーアニメーション */
.loading-spinner {
  width: 60px;
  height: 60px;
  border: 6px solid rgba(255, 255, 255, 0.2);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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