/* CSS変数によるカラーテーマ */
:root {
  --bg-color: #f9f9f9;
  --text-color: #222;
  --header-bg: #4a90e2;
  --header-text: white;
  --section-bg: #fff;
  --border-color: #ccc;
  --input-bg: #fff;
  --input-border: #ccc;
  --button-bg: #4a90e2;
  --button-hover: #357ac9;
  --highlight-bg: #fff2ac;
  --highlight-medium: #a8e6cf;
  --highlight-important: #fbb;
  --table-header: #eee;
  --table-border: #ddd;
  --filter-bg: #f8f9fa;
  --filter-border: #dee2e6;
  --warning-bg: #fff3cd;
  --warning-border: #ffeaa7;
  --warning-text: #856404;
  --drop-zone-bg: #f8f9fa;
  --drop-zone-hover: #e3f2fd;
}

[data-theme="dark"] {
  --bg-color: #1a1a1a;
  --text-color: #e0e0e0;
  --header-bg: #2d3748;
  --header-text: #e0e0e0;
  --section-bg: #2d3748;
  --border-color: #4a5568;
  --input-bg: #2d3748;
  --input-border: #4a5568;
  --button-bg: #4299e1;
  --button-hover: #3182ce;
  --highlight-bg: #d69e2e;
  --highlight-medium: #38b2ac;
  --highlight-important: #e53e3e;
  --table-header: #4a5568;
  --table-border: #4a5568;
  --filter-bg: #2d3748;
  --filter-border: #4a5568;
  --warning-bg: #744210;
  --warning-border: #975a16;
  --warning-text: #fbd38d;
  --drop-zone-bg: #2d3748;
  --drop-zone-hover: #3182ce;
}

/* ベース設定 */
body {
  font-family: system-ui, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  margin: 0;
  padding: 0;
  line-height: 1.6;
  transition: background-color 0.3s, color 0.3s;
}

/* ラップ */
main, header, footer {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* セクションごとの余白 */
section {
  margin-top: 2.5rem;
}

/* ヘッダー */
header {
  background-color: var(--header-bg);
  color: var(--header-text);
  border-bottom: 4px solid var(--button-hover);
  border-radius: 0 0 8px 8px;
  padding: 2rem 1.5rem;
  transition: background-color 0.3s;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 900px;
  margin: 0 auto;
}

.header-title {
  text-align: left;
  flex-grow: 1;
}

/* ヘッダーボタン */
.header-buttons {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.header-btn {
  background: none;
  border: 2px solid var(--header-text);
  color: var(--header-text);
  border-radius: 50%;
  width: 50px;
  height: 50px;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.header-btn:hover {
  background-color: var(--header-text);
  color: var(--header-bg);
  transform: scale(1.1);
}

h1 {
  margin: 0 0 0.5rem;
  font-size: 1.8rem;
}

h2 {
  margin: 2rem 0 1rem;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0.3rem;
}

/* 入力欄とボタン */
textarea {
  width: 100%;
  padding: 0.75rem;
  font-size: 1rem;
  font-family: monospace;
  box-sizing: border-box;
  margin-bottom: 1rem;
  border: 1px solid var(--input-border);
  border-radius: 5px;
  background-color: var(--input-bg);
  color: var(--text-color);
  transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

button {
  padding: 0.6rem 1.2rem;
  font-size: 1rem;
  background-color: var(--button-bg);
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  margin-top: 0.5rem;
  transition: background-color 0.3s;
}
button:hover {
  background-color: var(--button-hover);
}

/* 結果表示ボックス */
.output-box {
  background: var(--section-bg);
  border: 1px solid var(--border-color);
  padding: 1rem;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-x: auto;
  border-radius: 5px;
  margin-top: 0.5rem;
  transition: background-color 0.3s, border-color 0.3s;
}

/* 結果テーブル */
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

th, td {
  border: 1px solid var(--table-border);
  padding: 0.6rem;
  text-align: center;
  transition: background-color 0.3s, border-color 0.3s;
}

th {
  background-color: var(--table-header);
}

/* ソート可能なヘッダー */
th.sortable {
  cursor: pointer;
  user-select: none;
  position: relative;
  transition: background-color 0.2s;
}

th.sortable:hover {
  background-color: var(--border-color);
}

.sort-indicator {
  font-size: 0.8em;
  margin-left: 0.3rem;
  color: #666;
}

/* ハイライト制御 */
.highlight-control-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.85rem;
}

.highlight-control-buttons {
  display: flex;
  gap: 0.2rem;
}

.highlight-control-btn {
  padding: 0.2rem 0.4rem;
  font-size: 0.7rem;
  background-color: var(--filter-bg);
  color: var(--text-color);
  border: 1px solid var(--border-color);
  border-radius: 3px;
  cursor: pointer;
  transition: background-color 0.2s;
  margin: 0;
}

.highlight-control-btn:hover {
  background-color: var(--button-bg);
  color: white;
}

.highlight-checkbox {
  cursor: pointer;
  transform: scale(1.1);
}

/* ハイライト */
.highlight {
  background-color: var(--highlight-bg);
  font-weight: bold;
  border-bottom: 2px dotted var(--border-color);
}

.highlight-medium {
  background-color: var(--highlight-medium);
  font-weight: bold;
  border-bottom: 2px dotted var(--border-color);
}

.highlight-important {
  background-color: var(--highlight-important);
  font-weight: bold;
}

/* ドラッグアンドドロップゾーン */
.drop-zone {
  border: 2px dashed var(--button-bg);
  border-radius: 8px;
  padding: 2rem;
  text-align: center;
  background-color: var(--drop-zone-bg);
  margin-bottom: 1rem;
  transition: all 0.3s ease;
  cursor: pointer;
}

.drop-zone p {
  margin: 0.5rem 0;
  color: #666;
}

.drop-zone-or {
  font-size: 0.9rem;
  color: #999;
}

.drop-zone-click {
  color: var(--button-bg);
  font-weight: bold;
  text-decoration: underline;
}

.drop-zone.drag-over {
  border-color: var(--button-hover);
  background-color: var(--drop-zone-hover);
  transform: scale(1.02);
}

.drop-zone.drag-over p {
  color: var(--button-hover);
}

/* フィルターコントロール */
.filter-controls {
  background-color: var(--filter-bg);
  padding: 1rem;
  border-radius: 5px;
  margin-bottom: 1rem;
  border: 1px solid var(--filter-border);
  transition: background-color 0.3s, border-color 0.3s;
}

.filter-label {
  font-weight: bold;
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-color);
}

.length-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1rem;
}

.length-filter-label {
  display: flex;
  align-items: center;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: 3px;
  transition: background-color 0.2s;
}

.length-filter-label:hover {
  background-color: var(--border-color);
}

.length-filter-label input[type="checkbox"] {
  margin-right: 0.5rem;
  cursor: pointer;
}

.filter-btn {
  padding: 0.4rem 0.8rem;
  font-size: 0.9rem;
  background-color: var(--border-color);
  color: var(--text-color);
  border: none;
  border-radius: 3px;
  cursor: pointer;
  margin-right: 0.5rem;
  transition: background-color 0.2s;
}

.filter-btn:hover {
  background-color: var(--button-bg);
  color: white;
}

/* ページネーション */
#pagination-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
  padding: 0.5rem;
  background-color: #f5f5f5;
  border-radius: 5px;
}

#pagination-controls button {
  padding: 0.4rem 0.8rem;
  font-size: 0.9rem;
  background-color: #4a90e2;
  color: white;
  border: none;
  border-radius: 3px;
  cursor: pointer;
  transition: background-color 0.2s;
}

#pagination-controls button:hover:not(:disabled) {
  background-color: #357ac9;
}

#pagination-controls button:disabled {
  background-color: #ccc;
  cursor: not-allowed;
}

#page-info {
  font-weight: bold;
  color: #333;
}

/* 鍵長候補コントロール */
.keylength-controls {
  display: flex;
  gap: 2rem;
  margin-bottom: 1rem;
  padding: 0.5rem;
  background-color: var(--filter-bg);
  border-radius: 5px;
  border: 1px solid var(--filter-border);
  transition: background-color 0.3s, border-color 0.3s;
}

/* トグルスイッチ */
.toggle-label {
  display: flex;
  align-items: center;
  cursor: pointer;
  user-select: none;
  font-size: 0.9rem;
}

.toggle-checkbox {
  display: none;
}

.toggle-slider {
  position: relative;
  display: inline-block;
  width: 40px;
  height: 20px;
  background-color: var(--border-color);
  border-radius: 20px;
  transition: background-color 0.3s;
  margin-right: 0.5rem;
}

.toggle-slider:before {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: white;
  top: 2px;
  left: 2px;
  transition: transform 0.3s;
}

.toggle-checkbox:checked + .toggle-slider {
  background-color: var(--button-bg);
}

.toggle-checkbox:checked + .toggle-slider:before {
  transform: translateX(20px);
}

/* 警告メッセージ */
.warning-message {
  background-color: var(--warning-bg);
  border: 1px solid var(--warning-border);
  color: var(--warning-text);
  padding: 0.75rem;
  border-radius: 5px;
  margin-top: 0.5rem;
  font-size: 0.9rem;
  transition: background-color 0.3s, border-color 0.3s, color 0.3s;
}

/* モーダル */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(2px);
}

.modal-content {
  background-color: var(--section-bg);
  margin: 2% auto;
  border-radius: 8px;
  width: 90%;
  max-width: 800px;
  max-height: 90vh;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
  transition: background-color 0.3s;
}

.modal-header {
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--header-bg);
  color: var(--header-text);
  border-radius: 8px 8px 0 0;
}

.modal-header h2 {
  margin: 0;
  border: none;
  padding: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: 2rem;
  cursor: pointer;
  color: var(--header-text);
  transition: opacity 0.3s;
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  opacity: 0.7;
}

.modal-body {
  padding: 2rem;
  overflow-y: auto;
  flex-grow: 1;
  line-height: 1.6;
}

/* ヘルプコンテンツ */
.help-section {
  margin-bottom: 2rem;
}

.help-section h3 {
  color: var(--header-bg);
  border-bottom: 2px solid var(--header-bg);
  padding-bottom: 0.3rem;
  margin-bottom: 1rem;
}

.help-section h4 {
  color: var(--text-color);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.help-section ul, .help-section ol {
  margin-bottom: 1rem;
}

.help-section li {
  margin-bottom: 0.5rem;
}

.help-highlight {
  background-color: var(--highlight-bg);
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  font-weight: bold;
}

.help-highlight-medium {
  background-color: var(--highlight-medium);
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  font-weight: bold;
}

.help-highlight-important {
  background-color: var(--highlight-important);
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  font-weight: bold;
  color: white;
}

.help-section a {
  color: var(--button-bg);
  text-decoration: none;
  transition: color 0.3s;
}

.help-section a:hover {
  text-decoration: underline;
}

/* 信頼度スコア */
.confidence-score {
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  font-weight: bold;
  font-size: 0.9rem;
}

.confidence-high {
  background-color: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

[data-theme="dark"] .confidence-high {
  background-color: #0f5132;
  color: #d1e7dd;
  border: 1px solid #146c43;
}

.confidence-medium {
  background-color: #fff3cd;
  color: #856404;
  border: 1px solid #ffeaa7;
}

[data-theme="dark"] .confidence-medium {
  background-color: #664d03;
  color: #fff3cd;
  border: 1px solid #b08800;
}

.confidence-low {
  background-color: #ffeaa7;
  color: #856404;
  border: 1px solid #fdd835;
}

[data-theme="dark"] .confidence-low {
  background-color: #997404;
  color: #fff8e1;
  border: 1px solid #fbc02d;
}

.confidence-very-low {
  background-color: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

[data-theme="dark"] .confidence-very-low {
  background-color: #842029;
  color: #f8d7da;
  border: 1px solid #b02a37;
}

/* 統計情報 */
.statistics-container {
  margin-top: 1rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
}

.stat-card {
  background-color: var(--section-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  transition: background-color 0.3s, border-color 0.3s;
}

.stat-card h4 {
  margin: 0 0 0.8rem 0;
  color: var(--button-bg);
  font-size: 1rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.3rem;
}

.stat-item {
  margin-bottom: 0.4rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.confidence-distribution {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.confidence-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
}

.confidence-label {
  min-width: 70px;
  font-size: 0.8rem;
}

.confidence-meter {
  flex-grow: 1;
  height: 16px;
  background-color: var(--filter-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
}

.confidence-fill {
  height: 100%;
  transition: width 0.3s ease;
  border-radius: 7px;
}

.confidence-count {
  min-width: 20px;
  text-align: right;
  font-weight: bold;
  font-size: 0.8rem;
}

.top-pattern {
  background-color: var(--filter-bg);
  padding: 0.5rem;
  border-radius: 5px;
  border: 1px solid var(--border-color);
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
  .modal-content {
    width: 95%;
    margin: 5% auto;
    max-height: 85vh;
  }
  
  .modal-header, .modal-body {
    padding: 1rem;
  }
  
  .header-content {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
  
  .header-title {
    text-align: center;
  }
}

/* 拡張ツールチップ */
.tooltip {
  position: relative;
  cursor: help;
}

.tooltip::before {
  content: attr(data-tooltip);
  position: absolute;
  background-color: var(--text-color);
  color: var(--section-bg);
  padding: 0.6rem 0.8rem;
  border-radius: 6px;
  font-size: 0.8rem;
  line-height: 1.4;
  white-space: pre-line;
  max-width: 250px;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
  pointer-events: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  border: 1px solid var(--border-color);
}

.tooltip::after {
  content: '';
  position: absolute;
  border: 5px solid transparent;
  z-index: 1001;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}

/* 上方向ツールチップ（デフォルト） */
.tooltip::before {
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-bottom: 8px;
}

.tooltip::after {
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-top-color: var(--text-color);
  margin-bottom: 3px;
}

/* ホバー時表示 */
.tooltip:hover::before,
.tooltip:hover::after {
  opacity: 1;
  visibility: visible;
}

/* 右方向ツールチップ */
.tooltip-right::before {
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  margin-left: 8px;
  bottom: auto;
}

.tooltip-right::after {
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  border-right-color: var(--text-color);
  border-top-color: transparent;
  margin-left: 3px;
  bottom: auto;
}

/* 長いツールチップ用 */
.tooltip-wide::before {
  max-width: 300px;
  width: max-content;
}

/* ダークモード対応 */
[data-theme="dark"] .tooltip::before {
  background-color: var(--section-bg);
  color: var(--text-color);
  border-color: var(--border-color);
}

[data-theme="dark"] .tooltip::after {
  border-top-color: var(--section-bg);
}

[data-theme="dark"] .tooltip-right::after {
  border-right-color: var(--section-bg);
  border-top-color: transparent;
}

/* 暗号種別判定結果 */
#cipher-type-analysis.output-box {
  padding: 0.3rem !important;
  margin-top: 0.5rem !important;
}

.cipher-type-result {
  padding: 1rem;
  border-radius: 5px;
  border: 2px solid;
  margin: 0 !important;
}

.cipher-type-header {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.cipher-type-message {
  font-weight: bold;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
  line-height: 1.4;
}

.cipher-type-recommendation {
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.educational-note {
  background-color: var(--filter-bg);
  padding: 0.75rem;
  border-radius: 5px;
  margin-top: 0.5rem;
  font-size: 0.9rem;
  border: 1px solid var(--border-color);
  font-style: italic;
  line-height: 1.4;
}

.analysis-recommendation {
  background-color: var(--filter-bg);
  padding: 0.75rem;
  border-radius: 5px;
  margin: 0.5rem 0;
  border: 1px solid var(--border-color);
  line-height: 1.4;
}

.analysis-recommendation a {
  color: var(--button-bg);
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s;
}

.analysis-recommendation a:hover {
  text-decoration: underline;
  color: var(--button-hover);
}

/* 暗号種別判定結果内のbrタグのスタイリング */
.cipher-type-result br {
  margin: 0;
  padding: 0;
  line-height: 0.5;
}

/* 暗号種別判定の信頼度スタイリング */
.cipher-type-result.confidence-high {
  background-color: var(--section-bg);
  border-color: #28a745;
}

[data-theme="dark"] .cipher-type-result.confidence-high {
  border-color: #20c997;
}

.cipher-type-result.confidence-medium {
  background-color: var(--section-bg);
  border-color: #ffc107;
}

[data-theme="dark"] .cipher-type-result.confidence-medium {
  border-color: #ffcd39;
}

.cipher-type-result.confidence-low {
  background-color: var(--section-bg);
  border-color: #dc3545;
}

[data-theme="dark"] .cipher-type-result.confidence-low {
  border-color: #fd7e14;
}

/* フッター */
footer {
  border-top: 1px solid var(--border-color);
  text-align: center;
  font-size: 0.95rem;
  color: var(--text-color);
  padding: 2rem 1.5rem;
  margin-top: 4rem;
  transition: border-color 0.3s, color 0.3s;
}
.footer a {
  color: var(--button-bg);
  text-decoration: none;
  transition: color 0.3s;
}
.footer a:hover {
  text-decoration: underline;
}