/* ==========================================================================
   2D構造解析システム - スタイルシート
   ========================================================================== */

/* --- CSS変数（カスタムプロパティ）--- */
:root {
    /* ライトモード固定 */
    color-scheme: light only;
    
    /* カラーパレット */
    --color-primary: #005A9C;
    --color-primary-light: #3498db;
    --color-primary-dark: #2980b9;
    --color-success: #28a745;
    --color-warning: #ffc107;
    --color-danger: #dc3545;
    --color-info: #007bff;
    
    /* グレースケール */
    --color-text-primary: #2c3e50;
    --color-text-secondary: #34495e;
    --color-text-light: #333;
    --color-background: #f4f7f9;
    --color-surface: #fff;
    --color-border: #d1d9e0;
    --color-border-light: #ccc;
    
    /* サイズ */
    --border-radius-small: 4px;
    --border-radius-medium: 6px;
    --border-radius-large: 8px;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 10px;
    --spacing-lg: 15px;
    --spacing-xl: 20px;
    --spacing-xxl: 25px;
    
    /* フォント */
    --font-family-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-size-base: 14px;
    --font-size-large: 16px;
    --line-height-base: 1.6;
    
    /* 影 */
    --shadow-light: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-medium: 0 4px 12px rgba(0,0,0,0.15);
}

/* --- グローバルスタイル --- */
body { 
    font-family: var(--font-family-primary);
    line-height: var(--line-height-base);
    color: var(--color-text-light);
    background-color: var(--color-background);
    margin: 0;
    padding: var(--spacing-xl);
    font-size: var(--font-size-base);
}

tr.input-error {
    background-color: rgba(231, 76, 60, 0.12);
}

.input-error-field {
    border-color: #e74c3c !important;
    box-shadow: 0 0 0 1px rgba(231, 76, 60, 0.2);
}

.container { 
    max-width: 1600px; 
    margin: var(--spacing-xl) auto; 
    padding: var(--spacing-xxl); 
    box-shadow: var(--shadow-light);
    border-radius: var(--border-radius-large);
    background-color: var(--color-surface);
}

/* --- 見出し --- */
h1, h2, h3, h4 { 
    color: var(--color-text-primary);
    margin: 0;
}

h1 { 
    border-bottom: 4px solid var(--color-primary);
    padding-bottom: var(--spacing-lg);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    font-size: 2em;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* --- 説明文 --- */
.description {
    background-color: #f8f9ff;
    border: 1px solid #e3e8ff;
    border-radius: var(--border-radius-medium);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.description p {
    margin: 0 0 var(--spacing-sm) 0;
}

.description p:last-child {
    margin-bottom: 0;
}

h2 {
    font-size: 1.4em;
    color: var(--color-primary);
    border-bottom: 2px solid #f0f8ff;
    padding-bottom: var(--spacing-sm);
    margin-top: var(--spacing-xxl);
    margin-bottom: var(--spacing-lg);
}

h2:first-child { 
    margin-top: 0; 
}

h3 { 
    font-size: 1.1em; 
    margin-top: 0; 
    margin-bottom: var(--spacing-md);
}

/* --- フォーム要素 --- */
label { 
    font-weight: bold; 
    color: var(--color-text-secondary);
    display: block; 
    margin-bottom: var(--spacing-sm);
}

select, input, button { 
    font-size: var(--font-size-large);
    padding: var(--spacing-md);
    border-radius: 5px;
    border: 1px solid var(--color-border-light);
}

select, input[type="number"], input[type="text"] { 
    width: 100%; 
    box-sizing: border-box;
}

input[type="checkbox"], input[type="radio"] { 
    width: auto;
}

button { 
    cursor: pointer; 
    background-color: var(--color-primary-light);
    color: white; 
    border-color: var(--color-primary-dark);
    transition: background-color 0.3s ease;
}

button:hover { 
    background-color: var(--color-primary-dark);
}

button:disabled {
    background-color: #6c757d;
    border-color: #545b62;
    cursor: not-allowed;
    opacity: 0.65;
}

.hidden { 
    display: none;
}

/* --- 鋼材情報セクション --- */
.steel-info-section {
    margin-bottom: var(--spacing-xl);
}

.image-container {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.image-container img {
    max-width: 300px;
    max-height: 200px;
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-medium);
    box-shadow: var(--shadow-light);
}

.image-caption {
    margin-top: var(--spacing-sm);
    font-size: 0.9em;
    color: var(--color-text-secondary);
    font-style: italic;
}

.table-header h2 {
    color: var(--color-primary);
    border-bottom: 2px solid var(--color-primary-light);
    padding-bottom: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.table-guide {
    background-color: #fff8e1;
    border: 1px solid #ffcc02;
    border-radius: var(--border-radius-small);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    font-size: 0.95em;
    color: #856404;
}

/* --- ピックアップ結果セクション --- */
.results-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.results-header h2 {
    color: var(--color-success);
    border-bottom: 2px solid var(--color-success);
}

.results-description {
    color: var(--color-text-secondary);
    margin-bottom: 0;
}

.pickup-container {
    display: flex;
    gap: var(--spacing-xxl);
    align-items: flex-start;
}

.pickup-left {
    flex: 1.2;
    min-width: 400px;
}

.pickup-right {
    flex: 0.8;
    min-width: 300px;
}

.pickup-table-wrapper h3,
.pickup-right h3 {
    color: var(--color-primary);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.svg-container {
    background-color: #fafafa;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-medium);
    padding: var(--spacing-lg);
    text-align: center;
}

.svg-caption {
    margin-top: var(--spacing-sm);
    font-size: 0.85em;
    color: var(--color-text-secondary);
    text-align: center;
}

/* --- 軸選択 --- */
.axis-selector {
    background-color: #f0f8ff;
    border: 1px solid #cce0ff;
    border-radius: var(--border-radius-medium);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.axis-selector-header {
    margin-bottom: var(--spacing-md);
}

.axis-selector-header strong {
    display: block;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.axis-selector-header p {
    margin: 0;
    font-size: 0.9em;
    color: var(--color-text-secondary);
}

.axis-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.axis-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-small);
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.axis-option:hover {
    background-color: rgba(52, 152, 219, 0.1);
}

.axis-option input[type="radio"] {
    margin: 0;
}

.axis-option span {
    font-weight: 500;
}

.axis-option small {
    color: var(--color-text-secondary);
    font-size: 0.8em;
}

/* --- 適用ボタンセクション --- */
.apply-section {
    text-align: center;
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-lg);
    background-color: #f8fff8;
    border: 1px solid #c3e6c3;
    border-radius: var(--border-radius-medium);
}

.apply-btn {
    background: linear-gradient(135deg, var(--color-success), #28a745);
    border: none;
    color: white;
    font-size: 1.1em;
    font-weight: 600;
    padding: var(--spacing-md) var(--spacing-xxl);
    border-radius: var(--border-radius-medium);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(40, 167, 69, 0.3);
}

.apply-btn:hover {
    background: linear-gradient(135deg, #218838, var(--color-success));
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(40, 167, 69, 0.4);
}

.apply-note {
    margin: var(--spacing-sm) 0 0 0;
    font-size: 0.9em;
    color: var(--color-text-secondary);
}

/* --- フレーム解析システム固有スタイル --- */
.app-header {
    background-color: var(--color-primary);
    color: white;
    padding: var(--spacing-xl) 30px;
    border-top-left-radius: var(--border-radius-large);
    border-top-right-radius: var(--border-radius-large);
    margin: -25px -25px var(--spacing-xl) -25px;
}

.app-header h1 { 
    color: white; 
    border-bottom: none; 
    text-align: left; 
    font-size: 1.6em;
}

.app-main { 
    padding: 0;
}

.master-controls {
    background-color: #eaf2fb;
    border: 1px solid #d4e6f1;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xxl);
    border-radius: var(--border-radius-medium);
}

.master-controls label {
    font-size: 1.1em;
    font-weight: bold;
    color: var(--color-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    margin: 0;
}

.master-controls input[type="checkbox"] {
    margin-right: var(--spacing-md);
    transform: scale(1.2);
}

/* --- レイアウトグリッド --- */
.grid-inputs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: var(--spacing-xl);
}

/* --- テーブルスタイル --- */
.table-container {
    margin-top: var(--spacing-md);
    max-height: 500px; /* スクロール可能な最大高さ */
    overflow-y: auto; /* 縦スクロールを有効化 */
    overflow-x: auto; /* 横スクロールも有効化 */
    position: relative; /* sticky用の基準位置 */
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-small);
}

.table-container-result { 
    margin-top: var(--spacing-md);
}

table { 
    width: 100%; 
    border-collapse: collapse; 
    table-layout: fixed;
    background-color: var(--color-surface);
}

th, td { 
    padding: var(--spacing-sm) var(--spacing-md); 
    text-align: center; 
    border: 1px solid var(--color-border); 
    word-wrap: break-word;
}

th { 
    background-color: #f0f8ff; 
    font-weight: 600;
    color: var(--color-text-primary);
    position: sticky; /* ヘッダーを固定 */
    top: 0; /* スクロール時の位置 */
    z-index: 10; /* 他の要素より前面に表示 */
    box-shadow: 0 2px 4px rgba(0,0,0,0.1); /* ヘッダー下に影を追加 */
}

/* thead要素全体にもstickyを適用（念のため） */
thead {
    position: sticky;
    top: 0;
    z-index: 10;
}

/* --- 鋼材規格表の行スタイル --- */
.full-table tbody tr {
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.1s ease;
    position: relative;
}

.full-table tbody tr:hover {
    background-color: #f0f8ff;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.full-table tbody tr.selected,
.full-table tbody tr.selected-row {
    background-color: #e3f2fd;
    border-left: 4px solid var(--color-primary);
    font-weight: 500;
    position: relative;
}

.full-table tbody tr.selected::before,
.full-table tbody tr.selected-row::before {
    content: "✓";
    position: absolute;
    left: -15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-primary);
    font-weight: bold;
    font-size: 1.2em;
}

.full-table tbody tr.selected:hover,
.full-table tbody tr.selected-row:hover {
    background-color: #bbdefb;
}

.full-table tbody tr.selected td,
.full-table tbody tr.selected-row td {
    color: var(--color-primary-dark);
}

td input, td select { 
    padding: var(--spacing-xs); 
    font-size: 0.9em;
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius-small);
}

/* 入力エラー状態 */
td input.error, td select.error {
    background-color: #ffebee;
    border-color: var(--color-danger);
}

/* --- ボタンスタイル --- */
.btn-delete {
    background: var(--color-danger);
    color: white;
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    cursor: pointer;
    font-weight: bold;
    padding: 0;
    line-height: 24px;
    transition: background-color 0.2s ease;
}

.btn-delete:hover {
    background: #c82333;
}

.btn-select-properties {
    background-color: #5bc0de;
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 12px;
    border-radius: var(--border-radius-small);
    transition: background-color 0.2s ease;
}

.btn-select-properties:hover { 
    background-color: #31b0d5;
}

/* --- エクセル出力ボタン --- */
.btn-excel-export {
    background: #217346;
    color: white;
    border: 1px solid #185c37;
    transition: background-color 0.2s ease;
}

.btn-excel-export:hover {
    background: #1e6b42;
    border-color: #164f30;
}

.output-section { margin-top: 30px; padding-top: 20px; border-top: 2px solid #d1d9e0; }
.output-header { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; }
.check-controls label {
    margin-left: 15px;
    font-weight: normal;
    cursor: pointer;
}
.check-controls input {
    width: auto;
    margin-right: 5px;
}
.table-container-result { 
    max-height: 500px; /* スクロール可能な最大高さ */
    overflow-y: auto; 
    overflow-x: auto; 
    margin-bottom: 20px; 
    position: relative; /* sticky用の基準位置 */
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-small);
}
.error {
    color: #d9534f;
    font-weight: bold;
    margin-bottom: 20px;
    padding: 10px;
    background: #fdd;
    border: 1px solid #d9534f;
    border-radius: 4px;
    display: none;
}
.file-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 15px;
    background-color: #f9f9f9;
    padding: 10px;
    border-radius: 5px;
}
.file-controls > div {
    display: flex;
    align-items: center;
    gap: 10px;
}
.file-controls select {
    width: 250px;
}
.file-controls button {
    padding: 8px 12px;
    font-size: 14px;
}

/* エクセル出力ボタンのスタイル */
#export-excel-btn {
    background: #217346;
    color: white;
    border: 1px solid #185c37;
}

#export-excel-btn:hover {
    background: #1e6b42;
    border-color: #164f30;
}

/* Canvas & Controls */
.canvas-container {
    width: 100%;
    padding: 10px;
    box-sizing: border-box;
    background: #fdfdfd;
    border: 1px solid #d1d9e0;
    border-radius: 4px;
    position: relative;
    margin-top: 10px;
    overflow-x: auto; /* 横スクロールを有効化 */
    overflow-y: hidden;
}

/* モデル図のコンテナをリサイズ可能にする */
.input-section .canvas-container {
    resize: vertical;
    overflow: auto;
    height: 500px; /* 初期高さ */
    min-height: 300px; /* 最小高さ */
}

/* 3D表示コンテナ */
#model-3d-container {
    pointer-events: auto; /* マウスイベントを有効化 */
}

/* 結果表示用のキャンバスコンテナ（変位図、応力図、検定比図など） */
.result-visuals .canvas-container {
    overflow-x: auto; /* 横スクロールを有効化 */
    overflow-y: hidden;
    max-height: none; /* 最大高さ制限を削除 */
    min-height: 400px; /* 最小高さを設定 */
    height: 1040px; /* デフォルト高さ (900 + 80 + 60) */
    resize: vertical; /* 高さを伸縮可能にする */
}

/* 断面算定結果の検定比図も高さ調整可能に */
.section-check-item .canvas-container {
    overflow-x: auto;
    overflow-y: hidden;
    max-height: none;
    min-height: 400px;
    height: 1040px;
    resize: vertical;
}

/* 検定比図のキャンバススタイル */
.section-check-item canvas {
    width: auto !important;
    height: auto !important;
    max-width: none !important;
}

/* 表示制御チェックボックスのスタイル */
.display-controls {
    padding: 8px 12px;
    background-color: #f8f9fa;
    border-radius: 4px;
    border: 1px solid #e9ecef;
}

.display-controls label {
    font-weight: normal;
    color: #495057;
    user-select: none;
}

.display-controls input[type="checkbox"] {
    transform: scale(1.1);
}

canvas {
    display: block;
    cursor: default;
}

/* モデル図のキャンバス（従来通り100%幅） */
.input-section canvas {
    width: 100%;
}

/* 結果表示用のキャンバス（変位図、応力図、検定比図など） */
.result-visuals canvas {
    /* JavaScriptで動的にサイズを設定するため、width/height指定なし */
    width: auto !important;
    height: auto !important;
    max-width: none !important;
}

/* 応力度コンター図キャンバス専用スタイル */
#stress-canvas {
    border: 2px solid #27ae60;
    background-color: #f8f9fa;
    min-height: 300px;
}
.result-visuals {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

/* 第1軸と第2軸の応力図を横並びで表示 */
.result-visuals .stress-diagrams-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

/* 3D構造の場合、第1軸と第2軸の応力図を横並び表示 */
.result-visuals .canvas-container.primary-stress {
    grid-column: 1;
}

.result-visuals .canvas-container.secondary-stress {
    grid-column: 2;
}
.canvas-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 10px;
}
.canvas-controls > div { display: flex; align-items: center; gap: 5px;}
.canvas-settings { display: flex; align-items: center; gap: 5px; margin-top: 5px; }
.canvas-settings label { margin-bottom: 0; white-space: nowrap; font-weight: normal; }
.grid-input { width: 60px; padding: 4px 8px; }
.mode-btn, #undo-btn {
    background-color: #f0f0f0;
    color: #333;
    border: 1px solid #d1d9e0;
    margin-top: 0;
}
.mode-btn.active {
    background-color: #005A9C;
    color: white;
    border-color: #005A9C;
}
.help-icon {
    display: inline-block; width: 18px; height: 18px; line-height: 18px; text-align: center;
    border-radius: 50%; background-color: #ccc; color: white; font-size: 12px;
    font-weight: bold; cursor: pointer; user-select: none;
}
.help-icon:hover { background-color: #999; }
#undo-btn { background-color: #f0ad4e; color: white; border-color: #eea236; }
#undo-btn:hover { background-color: #ec971f; }
#calculate-btn, #calculate-and-animate-btn { width: 100%; padding: 12px; font-size: 1.2em; margin-top: 10px; }
#calculate-and-animate-btn { background-color: #5cb85c; }
#calculate-and-animate-btn:hover { background-color: #4cae4c; }

/* Popups & Menus */
.context-menu {
    position: absolute; display: none; background-color: #ffffff;
    border: 1px solid #d1d9e0; box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    border-radius: 4px; z-index: 1000;
}
.context-menu { padding: 5px 0; }
.context-menu-item { padding: 8px 15px; cursor: pointer; font-size: 14px; }
.context-menu-item:hover { background-color: #f0f8ff; }
.context-menu-separator { height: 1px; background-color: #d1d9e0; margin: 5px 0; }
.popup-box {
    position: fixed; /* fixedに変更して画面基準で配置 */
    display: none; 
    background-color: #ffffff;
    border: 1px solid #d1d9e0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15); 
    border-radius: 6px;
    padding: 15px; 
    z-index: 10000; /* 非常に高いz-indexを設定 */
    width: 280px;
    max-width: calc(100vw - 20px); /* 画面幅から最小マージンを引く */
    max-height: calc(100vh - 40px); /* 画面高さから最小マージンを引く */
    overflow-y: auto; /* 内容が多い場合はスクロール */
    box-sizing: border-box; /* パディングを含むサイズ計算 */
}
.popup-box.add-member-popup-wide {
    width: 380px;
}
.section-info-display {
    background-color: #e8f5e9;
    border: 1px solid #4caf50;
    border-radius: 4px;
    padding: 8px 12px;
    margin-bottom: 12px;
    font-size: 13px;
    color: #2e7d32;
}
.popup-box h4 { 
    margin: 0 0 10px 0; font-size: 1.1em; color: #005A9C; 
    padding: 5px 8px; border-radius: 4px; 
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border: 1px solid #dee2e6;
    position: relative;
}
.popup-box h4:hover { 
    background: linear-gradient(135deg, #e9ecef 0%, #dee2e6 100%); 
}
.popup-box h4::after {
    content: "⋮⋮";
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    color: #6c757d;
    font-size: 12px;
    letter-spacing: -2px;
}
.props-grid { display: grid; grid-template-columns: 100px 1fr; gap: 8px; align-items: center; }
.props-grid label { margin-bottom: 0; font-weight: normal; }
.props-grid input, .props-grid select { padding: 5px; font-size: 13px; }

#member-props-popup { width: 380px; max-width: 95vw; }
#member-props-popup .member-props-grid { grid-template-columns: 1fr; row-gap: 8px; column-gap: 0; align-items: stretch; }
#member-props-popup .member-props-grid label { font-weight: 600; }
#member-props-popup .member-props-grid .wide-field,
#member-props-popup .member-props-grid .full-width-field,
#member-props-popup .member-props-grid .density-field,
#member-props-popup .member-props-grid input,
#member-props-popup .member-props-grid select { width: 100%; }
#member-props-popup .member-props-grid .self-weight-field { padding: 4px 8px; background: #f5f7fa; border-radius: 4px; font-size: 12px; color: #333; }
#member-props-popup .member-props-grid .section-name-field { display: flex; gap: 6px; align-items: center; }
#member-props-popup .member-props-grid .section-name-field input { flex: 1; }
#member-props-popup .member-props-grid .icon-button { flex: none; width: 28px; height: 28px; border: 1px solid #d0d5dd; border-radius: 4px; background: #f9fafb; color: #333; font-size: 16px; line-height: 1; display: flex; align-items: center; justify-content: center; cursor: pointer; transition: background 0.2s, color 0.2s, border-color 0.2s; }
#member-props-popup .member-props-grid .icon-button:hover:not(:disabled) { background: #eef2f6; color: #111; border-color: #c0c5cd; }
#member-props-popup .member-props-grid .icon-button:disabled { cursor: not-allowed; opacity: 0.4; }
.popup-buttons { margin-top: 15px; display: flex; justify-content: flex-end; gap: 8px; }
.popup-buttons button { margin-top: 0; padding: 6px 12px; }
#popup-delete-member { background-color: #d9534f; }

/* ドラッグ中のスタイル */
.popup-dragging {
    opacity: 0.8;
    box-shadow: 0 8px 25px rgba(0,0,0,0.3) !important;
    transform: rotate(1deg);
}
.popup-dragging h4 {
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%) !important;
    color: white !important;
}

/* Operation Guide */
#operation-guide {
    background-color: #f0f8ff; 
    border: 1px solid #d1d9e0; 
    border-radius: 6px;
    padding: 15px; 
    margin-bottom: 15px; 
    font-size: 13px;
}

#operation-guide h4 { 
    margin: 0 0 12px 0; 
    color: #005A9C; 
    font-size: 1.1em; 
    text-align: center;
}

/* 2列レイアウト */
.guide-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.guide-column {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.guide-section {
    background-color: rgba(255, 255, 255, 0.6);
    border-radius: 4px;
    padding: 10px;
}

.guide-section h5 {
    margin: 0 0 6px 0;
    color: #005A9C;
    font-size: 0.95em;
    font-weight: bold;
    border-bottom: 1px solid #d1d9e0;
    padding-bottom: 3px;
}

.guide-section ul { 
    margin: 0; 
    padding-left: 16px; 
    list-style-type: none;
}

.guide-section li { 
    margin-bottom: 2px; 
    font-size: 12px;
    line-height: 1.4;
    position: relative;
}

.guide-section li::before {
    content: "▸";
    color: #005A9C;
    margin-right: 4px;
    font-size: 10px;
}

.guide-section li strong {
    color: #2c3e50;
}

/* レスポンシブ対応 */
@media (max-width: 1200px) {
    .guide-columns {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .guide-column {
        gap: 10px;
    }
}

/* Section Check Toggling */
body.section-check-disabled .section-check-item {
    display: none !important;
}

/* --- Steel Selector Specific --- */
.selector-group { margin-bottom: 25px; }
.main-content { display: flex; flex-wrap: wrap; gap: 20px; }
.table-section { flex: 3; min-width: 600px; }
.visual-section { flex: 2; min-width: 400px; }
#image-wrapper { text-align: center; margin-bottom: 15px; }
/* === 鋼材選択システム固有スタイル === */

/* --- 画像表示セクション --- */
.image-display {
    text-align: center;
    margin: var(--spacing-lg) 0;
}

.section-image {
    max-width: 100%;
    max-height: 150px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-small);
    padding: var(--spacing-sm);
    transition: border-color 0.2s ease;
}

.section-image:hover {
    border-color: var(--color-primary);
}

/* --- SVG図形描画 --- */
.svg-container,
.custom-svg-container {
    text-align: center;
    margin: var(--spacing-lg) 0;
}

.section-svg,
.custom-section-svg {
    max-width: 250px;
    max-height: 200px;
    overflow: visible;
}

/* 断面性能値検索のSVG要素に特化したサイズ制御 */
#section-svg,
#custom-section-svg {
    width: 250px !important;
    height: 200px !important;
    max-width: 250px !important;
    max-height: 200px !important;
    min-width: 250px;
    min-height: 200px;
    border: 1px solid #ddd;
    background-color: #fafafa;
    display: block;
    margin: 10px auto;
    overflow: visible;
    box-sizing: border-box;
}

#svg-wrapper,
#custom-svg-wrapper {
    text-align: center;
    margin: 15px 0;
    padding: 10px;
    background-color: #f9f9f9;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
    width: 280px;
    max-width: 280px;
    margin-left: auto;
    margin-right: auto;
    overflow: hidden;
}

.svg-dimensions {
    stroke: var(--color-danger);
    fill: var(--color-danger);
    font-family: var(--font-family-base);
    font-size: 12px;
}

.svg-dimensions .thickness {
    stroke: var(--color-info);
    fill: var(--color-info);
}

/* --- グラフコントロール --- */
.graph-controls {
    background-color: #f9f9f9;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-small);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--color-border-light);
}

.graph-controls .control-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    align-items: center;
}

/* --- テーブル表示コントロール --- */
.table-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.table-guide {
    color: var(--color-text-secondary);
    font-style: italic;
    font-size: 0.9em;
}

/* --- 詳細テーブルコンテナ --- */
.detail-table-container {
    max-height: 500px;
    overflow: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-small);
}

.detail-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    table-layout: auto;
}

.detail-table th {
    position: sticky;
    top: 0;
    z-index: 1;
    background-color: #f2f6fa;
    color: var(--color-text-primary);
    padding: var(--spacing-md) var(--spacing-sm);
    text-align: center;
    border-bottom: 2px solid #ccc;
    white-space: nowrap;
    font-weight: 600;
}

.detail-table td {
    padding: var(--spacing-sm);
    border-bottom: 1px solid #eee;
    text-align: right;
    white-space: nowrap;
}

.detail-table tbody tr {
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.detail-table tbody tr:hover {
    background-color: #eaf2fb;
}

.detail-table .selected-row {
    background-color: #d4e6f1 !important;
    font-weight: bold;
}

/* --- ピックアップセクション --- */
.pickup-section {
    margin-top: var(--spacing-xl);
    border-top: 2px solid var(--color-info);
    padding-top: var(--spacing-xl);
}

.pickup-section h2 {
    text-align: center;
    color: var(--color-text-primary);
    margin-top: 0;
    margin-bottom: var(--spacing-lg);
}

.pickup-content {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
    align-items: center;
    justify-content: center;
}

.pickup-table-container {
    flex: 1;
    min-width: 350px;
}

.pickup-svg-container {
    flex-basis: 250px;
}

.pickup-table {
    width: 100%;
    border-collapse: collapse;
}

.pickup-table th,
.pickup-table td {
    border: 1px solid var(--color-border);
    padding: var(--spacing-md);
    text-align: left;
}

.pickup-table th {
    background-color: #f2f6fa;
    width: 45%;
    font-weight: 600;
}

.pickup-table td {
    text-align: right;
    font-weight: 500;
}

/* --- 重量計算機 --- */
.weight-calculator {
    margin-top: var(--spacing-lg);
    text-align: center;
    padding: var(--spacing-md);
    background-color: #f8f9fa;
    border-radius: var(--border-radius-small);
    border: 1px solid var(--color-border-light);
}

.weight-calculator label {
    font-weight: bold;
    margin-right: var(--spacing-sm);
}

.weight-calculator input {
    width: 100px;
    margin: 0 var(--spacing-md);
    text-align: right;
    padding: var(--spacing-xs);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-small);
}

.total-weight-display {
    font-weight: bold;
    color: var(--color-danger);
    font-size: 1.1em;
    margin-left: var(--spacing-md);
}

.axis-selector {
    text-align: center;
    margin-top: 15px;
    padding: 10px;
    background-color: #f9f9f9;
    border-radius: 5px;
    border: 1px solid #ddd;
}
.axis-selector strong {
    margin-right: 15px;
}
.axis-selector label {
    display: inline-block;
    margin-right: 10px;
    font-weight: normal;
    cursor: pointer;
}
.axis-selector input[type="radio"] {
    margin-right: 5px;
    vertical-align: middle;
}

/* --- カスタム計算ツール --- */
.custom-calculator-section {
    margin-top: var(--spacing-xxl);
    border-top: 3px solid var(--color-warning);
    padding-top: var(--spacing-xxl);
}

.calculator-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.calculator-header h2 {
    color: var(--color-warning);
    border-bottom: 2px solid var(--color-warning);
    display: inline-block;
    padding-bottom: var(--spacing-sm);
}

.calculator-description {
    background-color: #fffdf0;
    border: 1px solid #ffd700;
    border-radius: var(--border-radius-medium);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.calculator-description p {
    margin: 0 0 var(--spacing-sm) 0;
}

.calculator-description p:last-child {
    margin-bottom: 0;
}

.calculator-description .note {
    font-size: 0.9em;
    color: #856404;
    font-style: italic;
}

.custom-calculator-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.calculator-input-section {
    display: flex;
    gap: var(--spacing-xxl);
    align-items: flex-start;
}

.input-wrapper {
    flex: 1;
    min-width: 300px;
}

.input-wrapper h3 {
    color: var(--color-primary);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.custom-inputs {
    background-color: #f9f9f9;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-medium);
    padding: var(--spacing-lg);
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--spacing-md) var(--spacing-lg);
    align-items: center;
}

.custom-inputs label {
    font-weight: 600;
    text-align: right;
    color: var(--color-text-primary);
    margin-bottom: 0;
}

.custom-inputs input {
    border: 2px solid var(--color-border-light);
    border-radius: var(--border-radius-small);
    padding: var(--spacing-sm);
    font-size: 1em;
    transition: border-color 0.3s ease;
}

.custom-inputs input:focus {
    border-color: var(--color-primary-light);
    outline: none;
}

.calculator-visual {
    flex: 1;
    min-width: 300px;
}

.calculator-visual h3 {
    color: var(--color-primary);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.svg-wrapper {
    background-color: #fafafa;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-medium);
    padding: var(--spacing-lg);
    text-align: center;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.svg-note {
    margin-top: var(--spacing-sm);
    font-size: 0.85em;
    color: var(--color-text-secondary);
    text-align: center;
}

.calculator-results-section {
    background-color: #f8fff8;
    border: 1px solid #c3e6c3;
    border-radius: var(--border-radius-medium);
    padding: var(--spacing-xl);
}

.custom-results h3 {
    color: var(--color-success);
    border-bottom: 2px solid var(--color-success);
    padding-bottom: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.custom-results-note {
    font-size: 0.85em;
    color: var(--color-text-secondary);
    text-align: center;
    padding: var(--spacing-sm) var(--spacing-md);
}

.results-table-wrapper {
    margin-bottom: var(--spacing-lg);
}

@media (max-width: 768px) {
    .pickup-container,
    .calculator-input-section {
        flex-direction: column;
    }
    
    .pickup-left,
    .pickup-right,
    .input-wrapper,
    .calculator-visual {
        min-width: auto;
        width: 100%;
    }
}

/* Modal */
.modal {
    display: none; position: fixed; z-index: 1000;
    left: 0; top: 0; width: 100%; height: 100%;
    overflow: auto; background-color: rgba(0,0,0,0.8); cursor: pointer;
}
.modal-content {
    margin: 5% auto; padding: 20px; width: 80%; height: 80%;
    position: relative; cursor: default; background-color: #fff;
}
.modal-close {
    position: absolute; top: -15px; right: 15px; color: #f1f1f1;
    font-size: 40px; font-weight: bold; cursor: pointer;
}
.modal-close:hover, .modal-close:focus { color: #bbb; text-decoration: none; }

/* Responsive Styles */
@media (max-width: 768px) {
    body { padding: 10px; font-size: 15px; }
    main { padding: 15px; }
    .grid-inputs, .result-visuals { grid-template-columns: 1fr; }
    .table-container, .table-container-result { overflow-x: auto; }
    table { min-width: 500px; }
    .popup-box {
        position: fixed; width: 90vw; max-width: 320px;
        left: 50% !important; top: 50% !important; 
        transform: translate(-50%, -50%) !important;
        max-height: 90vh; /* 画面高さの90%まで */
    }
    .canvas-controls, .canvas-settings {
        flex-direction: column; align-items: flex-start; gap: 8px;
    }
    .file-controls {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* === モデルコントロール === */
.model-controls {
    display: flex;
    justify-content: flex-end;
    margin-bottom: var(--spacing-md);
    gap: var(--spacing-sm);
}

.btn-auto-scale {
    background-color: var(--color-success);
    color: white;
    border-color: #229954;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 14px;
    transition: background-color 0.2s ease;
}

.btn-auto-scale:hover {
    background-color: #229954;
}

.btn-reset {
    background-color: #f39c12;
    color: white;
    border-color: #e67e22;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 14px;
    transition: background-color 0.2s ease;
}

.btn-reset:hover {
    background-color: #e67e22;
}

/* === キャンバスヘッダー === */
.canvas-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.btn-diagram {
    background-color: var(--color-success);
    color: white;
    border-color: #2ecc71;
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 14px;
    border-radius: var(--border-radius-small);
    transition: all 0.2s ease;
}

.btn-diagram:hover {
    background-color: #2ecc71;
    transform: translateY(-1px);
}

.btn-diagram:active {
    background-color: #229954;
    transform: translateY(0);
}

/* === レスポンシブデザイン拡張 === */
@media (max-width: 480px) {
    .app-header h1 {
        font-size: 1.3em;
    }
    
    table {
        font-size: 0.8em;
    }
    
    th, td {
        padding: var(--spacing-xs);
    }
    
    .btn-primary,
    .btn-secondary {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.9em;
    }
    
    .model-controls {
        flex-direction: column;
        align-items: stretch;
    }
}

/* === ユーティリティクラス === */
.hidden { 
    display: none !important; 
}

.text-center { 
    text-align: center !important; 
}

.text-left { 
    text-align: left !important; 
}

.text-right { 
    text-align: right !important; 
}

.font-bold { 
    font-weight: bold !important; 
}

.margin-bottom-small { 
    margin-bottom: var(--spacing-sm) !important; 
}

.margin-bottom-medium { 
    margin-bottom: var(--spacing-md) !important; 
}

.margin-bottom-large { 
    margin-bottom: var(--spacing-lg) !important; 
}

/* === アクセシビリティ向上 === */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* フォーカス表示の改善 */
button:focus,
input:focus,
select:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* 高コントラストモード対応は無効化（ライトモード固定のため） */
/*
@media (prefers-contrast: high) {
    :root {
        --color-text-primary: #000000;
        --color-text-secondary: #333333;
        --color-border: #000000;
        --color-border-light: #666666;
    }
}
*/

/* ダークモード対応は無効化（ライトモード固定のため） */
/*
@media (prefers-color-scheme: dark) {
    :root {
        --color-background: #1a1a1a;
        --color-surface: #2d2d2d;
        --color-text-primary: #ffffff;
        --color-text-secondary: #cccccc;
        --color-border: #404040;
        --color-border-light: #666666;
    }
}
*/


/* === インタラクティブツールチップスタイル === */
#canvas-tooltip {
    position: fixed !important;
    z-index: 10001 !important;
    padding: 8px 12px !important;
    background-color: rgba(0, 0, 0, 0.9) !important;
    color: white !important;
    font-size: 12px !important;
    border-radius: 6px !important;
    pointer-events: none !important;
    max-width: 300px !important;
    word-wrap: break-word !important;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3) !important;
    font-family: Arial, sans-serif !important;
    line-height: 1.4 !important;
    transition: opacity 0.2s ease !important;
}

/* ツールチップタイプ別の色設定 */
#canvas-tooltip.tooltip-displacement {
    background-color: #007bff !important;
    border-left: 4px solid #0056b3 !important;
}

#canvas-tooltip.tooltip-stress {
    background-color: #dc3545 !important;
    border-left: 4px solid #c82333 !important;
}

#canvas-tooltip.tooltip-ratio {
    background-color: #fd7e14 !important;
    border-left: 4px solid #e55a00 !important;
}

#canvas-tooltip.tooltip-moment {
    background-color: #6f42c1 !important;
    border-left: 4px solid #59359a !important;
}

#canvas-tooltip.tooltip-axial {
    background-color: #20c997 !important;
    border-left: 4px solid #1ba085 !important;
}

#canvas-tooltip.tooltip-shear {
    background-color: #ffc107 !important;
    border-left: 4px solid #e0a800 !important;
    color: #212529 !important; /* 黄色背景の場合は文字を暗く */
}

/* ツールチップ内のテキストスタイル */
#canvas-tooltip div {
    margin: 2px 0 !important;
}

#canvas-tooltip strong {
    font-weight: bold !important;
    display: block !important;
    margin-bottom: 4px !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3) !important;
    padding-bottom: 2px !important;
}

/* キャンバスにカーソルスタイルを追加 */
canvas {
    cursor: crosshair;
}

canvas:hover {
    cursor: crosshair;
}

/* ==========================================================================
   フレームジェネレーター スタイル
   ========================================================================== */

/* フレームジェネレーターボタン */
.frame-generator-btn {
    background: linear-gradient(135deg, #2E8B57, #3CB371);
    color: white;
    border: none;
    padding: 8px 12px;
    border-radius: var(--border-radius-medium);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(46, 139, 87, 0.2);
    margin-left: 10px;
}

.frame-generator-btn:hover {
    background: linear-gradient(135deg, #3CB371, #2E8B57);
    box-shadow: 0 4px 8px rgba(46, 139, 87, 0.3);
    transform: translateY(-1px);
}

.frame-generator-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(46, 139, 87, 0.2);
}

/* モーダル基本スタイル */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: white;
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-medium);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    animation: slideIn 0.3s ease;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
}

.modal-header h3 {
    margin: 0;
    color: var(--color-text-primary);
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    font-size: 24px;
    cursor: pointer;
    color: #999;
    transition: color 0.2s ease;
}

.modal-close:hover {
    color: var(--color-danger);
}

.modal-body {
    padding: var(--spacing-xl);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    padding: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
    background: #f8f9fa;
}

/* ジェネレーターセクション */
.generator-section {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius-medium);
    background: #fafbfc;
}

.generator-section h4 {
    margin: 0 0 var(--spacing-lg) 0;
    color: var(--color-primary);
    font-size: 16px;
    font-weight: 600;
}

.generator-row {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-md);
    gap: var(--spacing-md);
}

.generator-row:last-child {
    margin-bottom: 0;
}

.generator-row label {
    min-width: 100px;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.generator-row input[type="number"] {
    flex: 1;
    max-width: 120px;
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius-small);
    font-size: var(--font-size-base);
}

.generator-row input[type="number"]:focus {
    border-color: var(--color-primary);
    outline: none;
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.generator-row .unit {
    color: #666;
    font-size: 12px;
    min-width: 20px;
}

.generator-row input[type="checkbox"] {
    margin-right: var(--spacing-sm);
}

/* プレビュー */
.generator-preview {
    background: linear-gradient(135deg, #e3f2fd, #f3e5f5);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-medium);
    border: 1px solid #b3e5fc;
}

.preview-text {
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
}

.preview-text span {
    font-weight: 600;
    color: var(--color-primary);
}

/* ボタン */
.cancel-btn, .generate-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--border-radius-medium);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.cancel-btn {
    background: #6c757d;
    color: white;
}

.cancel-btn:hover {
    background: #5a6268;
}

.generate-btn {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
    box-shadow: 0 2px 4px rgba(0, 90, 156, 0.2);
}

.generate-btn:hover {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    box-shadow: 0 4px 8px rgba(0, 90, 156, 0.3);
    transform: translateY(-1px);
}

.generate-btn:active {
    transform: translateY(0);
}

/* アニメーション */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from { 
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to { 
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* --- 部材情報ツールチップ --- */
.member-tooltip {
    position: absolute;
    background: #ffffff;
    border: 1px solid rgba(37, 99, 235, 0.35);
    border-radius: var(--border-radius-small);
    padding: 0;
    min-width: 700px;
    max-width: 900px;
    z-index: 1000;
    pointer-events: none;
    box-shadow: 0 18px 38px -16px rgba(15, 23, 42, 0.35);
    font-size: 11px;
    line-height: 1.35;
    transition: opacity 0.18s ease, transform 0.18s ease;
    opacity: 1;
    transform: scale(1);
}

.member-tooltip.hidden {
    opacity: 0;
    transform: scale(0.8);
    display: none !important;
}

.tooltip-header {
    background: var(--color-primary);
    color: white;
    padding: 5px 10px;
    font-weight: 600;
    border-radius: var(--border-radius-small) var(--border-radius-small) 0 0;
    border-bottom: 1px solid rgba(255,255,255,0.25);
    font-size: 11px;
}

.tooltip-body {
    display: grid;
    grid-template-columns: 1fr 1fr 180px;
    gap: 12px;
    padding: 10px 12px;
    align-items: start;
}

.tooltip-info-pane {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-width: 0;
}

.tooltip-summary-chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

.tooltip-chip--summary {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.35);
    border-radius: 12px;
    padding: 3px 8px;
    font-size: 10px;
}

.tooltip-chip--summary .chip-label {
    font-weight: 600;
    color: #1e3a8a;
}

.tooltip-chip--summary .chip-value {
    margin-left: 6px;
    font-weight: 600;
    color: #0f172a;
}

.tooltip-stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 4px 8px;
}

.tooltip-stat-item {
    display: flex;
    flex-direction: column;
    gap: 1px;
    background: rgba(148, 163, 184, 0.08);
    border-radius: 5px;
    padding: 4px 6px;
}

.tooltip-stat-item .stat-label {
    font-size: 9px;
    font-weight: 600;
    letter-spacing: 0.3px;
    color: #475569;
    text-transform: uppercase;
}

.tooltip-stat-item .stat-value {
    font-variant-numeric: tabular-nums;
    color: #0f172a;
    font-weight: 600;
    font-size: 10px;
}

.tooltip-column {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.tooltip-figure-pane {
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: stretch;
}

.tooltip-meta {
    border-right: none;
    padding-right: 0;
    gap: 4px;
}

.tooltip-row {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    padding: 2px 0;
    border-bottom: 1px dashed rgba(0,0,0,0.06);
}

.tooltip-row:last-child {
    border-bottom: none;
}

.tooltip-row .label {
    font-weight: 600;
    color: #34495e;
}

.tooltip-row .value {
    font-variant-numeric: tabular-nums;
    color: #1f2937;
    text-align: right;
    min-width: 90px;
}

.tooltip-subsection {
    display: flex;
    flex-direction: column;
    gap: 3px;
    margin-top: 6px;
}

.tooltip-subsection:first-of-type {
    margin-top: 0;
}

.tooltip-subtitle {
    font-size: 10px;
    font-weight: 600;
    color: #1e3a8a;
    letter-spacing: 0.3px;
    text-transform: uppercase;
    margin-bottom: 2px;
}

.tooltip-chip-list {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.tooltip-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 6px;
    border-radius: 8px;
    background: rgba(148, 163, 184, 0.18);
    color: #0f172a;
    font-size: 10px;
    font-weight: 500;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.6);
}

.tooltip-chip-list.compact {
    gap: 3px;
}

.tooltip-chip--connection {
    background: rgba(16, 185, 129, 0.16);
    color: #065f46;
}

.tooltip-chip--emphasis {
    background: rgba(37, 99, 235, 0.16);
    color: #1d4ed8;
}

.tooltip-chip--wide {
    flex-direction: column;
    align-items: flex-start;
    border-radius: 10px;
    padding: 4px 8px;
}

.tooltip-chip .chip-label {
    font-weight: 600;
    color: #0f172a;
}

.tooltip-chip .chip-value {
    font-weight: 500;
}

.tooltip-chip .chip-suffix {
    margin-left: 2px;
    font-size: 9px;
    color: #475569;
}

.tooltip-chip .chip-subvalue {
    display: block;
    margin-top: 1px;
    font-size: 9px;
    color: #475569;
    font-weight: 400;
}

.tooltip-section-preview {
    margin-top: 4px;
    background: #f8fafc;
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 6px;
    padding: 6px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.tooltip-section-preview svg {
    max-width: 120px;
    max-height: 120px;
    height: auto;
    display: block;
}

.section-preview-card {
    background: linear-gradient(145deg, rgba(255,255,255,0.95), rgba(241, 245, 249, 0.92));
    border: 1px solid rgba(99, 102, 241, 0.18);
    border-radius: 8px;
    padding: 8px;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.8);
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.section-preview-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 8px;
}

.section-title {
    font-size: 11px;
    font-weight: 700;
    color: #1e293b;
    letter-spacing: 0.1px;
}

.section-axis-chip {
    background: rgba(30, 64, 175, 0.12);
    color: #1e40af;
    border-radius: 10px;
    padding: 2px 8px;
    font-size: 9px;
    font-weight: 600;
}

.section-summary-text {
    font-size: 9px;
    color: #334155;
    line-height: 1.3;
}

.section-dimension-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 4px;
}

.section-dimension-item {
    background: rgba(30, 64, 175, 0.08);
    border-radius: 4px;
    padding: 3px 5px;
    display: flex;
    justify-content: space-between;
    gap: 6px;
    font-variant-numeric: tabular-nums;
    font-size: 9px;
}

.section-source {
    font-size: 8px;
    color: #475569;
    margin-top: 3px;
}

.section-placeholder {
    font-size: 9px;
    color: #475569;
    line-height: 1.3;
}

.selected-section-summary {
    font-size: 11px;
    color: #2c3e50;
    margin-bottom: 2px;
    line-height: 1.3;
}

.tooltip-section-block:last-child {
    margin-bottom: 0;
}

.tooltip-highlight {
    background: rgba(52, 152, 219, 0.1);
    color: var(--color-primary-dark);
    padding: 1px 4px;
    border-radius: 3px;
    font-weight: 600;
}

@media (max-width: 560px) {
    .member-tooltip {
        min-width: 100%;
        max-width: calc(100vw - 24px);
    }

    .tooltip-body {
        flex-direction: column;
        gap: 14px;
    }

    .tooltip-info-pane {
        flex: 1 1 auto;
    }

    .tooltip-figure-pane {
        flex: 1 1 auto;
    }

    .tooltip-meta {
        border-right: none;
        padding-right: 0;
    }

    .tooltip-row .value {
        min-width: auto;
    }

    .tooltip-section-preview svg {
        max-width: 100%;
    }
}

/* ==========================================================================
   3Dビューア機能 スタイル
   ========================================================================== */
#view-3d-btn {
    background-color: #8e44ad;
    color: white;
    border-color: #7d3c98;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 14px;
    transition: background-color 0.2s ease;
}

#view-3d-btn:hover {
    background-color: #7d3c98;
}

.modal-3d {
    display: none; /* JSで制御 */
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: rgba(0,0,0,0.6);
    animation: fadeIn 0.3s;
}

.modal-3d-content {
    background-color: #fefefe;
    margin: 4% auto;
    padding: 20px;
    border: 1px solid #888;
    width: 85%;
    max-width: 1400px;
    height: 85%;
    border-radius: var(--border-radius-large);
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    display: flex;
    flex-direction: column;
}

.modal-3d-content h3 {
    margin: 0 0 var(--spacing-lg) 0;
    color: var(--color-primary);
    border-bottom: 2px solid var(--color-primary-light);
    padding-bottom: var(--spacing-sm);
}

.modal-3d-close {
    color: #aaa;
    align-self: flex-end;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
    padding: 0 5px;
    margin-top: -15px;
    margin-right: -5px;
}

.modal-3d-close:hover,
.modal-3d-close:focus {
    color: black;
    text-decoration: none;
}

#canvas-3d-container {
    flex-grow: 1;
    position: relative;
    border: 1px solid var(--color-border-light);
    background: #e9ecef;
    border-radius: var(--border-radius-small);
}

#canvas-3d {
    display: block;
    width: 100%;
    height: 100%;
}

.modal-3d-note {
    text-align: center;
    font-size: 13px;
    color: #555;
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    background-color: #f8f9fa;
    border-radius: var(--border-radius-small);
}

/* --- 伸縮可能な入力テーブル --- */
/* 主要な入力テーブルの高さを垂直方向にリサイズ可能にします */
.input-section .grid-inputs .table-container,
.input-section > div > .table-container {
    resize: vertical;      /* 垂直方向のリサイズを有効にする */
    overflow: auto;        /* 内容がはみ出した場合にスクロールバーを表示 */
    height: 220px;         /* 初期状態の高さ */
    min-height: 120px;     /* 伸縮可能な最小の高さ */
    max-height: 70vh;      /* 伸縮可能な最大の高さ（ビューポートの70%） */
    border: 1px solid var(--color-border); /* リサイズ可能な領域を示す枠線 */
    padding: 10px;         /* コンテナの内側の余白 */
    background-color: #fdfdfd; /* コンテナの背景色 */
    position: relative;    /* sticky用の基準位置 */
}

/* テーブルコンテナ内のテーブルの調整 */
.input-section .table-container table,
.table-container table {
    margin: 0; /* コンテナのpaddingと重ならないように */
}

/* === 共有リンク機能のスタイル === */
#create-share-link-btn {
    background-color: #17a2b8;
    border-color: #138496;
}
#create-share-link-btn:hover {
    background-color: #138496;
}
#copy-share-link-btn {
    background-color: #28a745;
    border-color: #218838;
}
#copy-share-link-btn:hover {
    background-color: #218838;
}

/* --- オンキャンバス直接編集用のスタイル --- */
.on-canvas-editor {
    position: absolute;
    z-index: 1001; /* キャンバスより手前、ポップアップより奥に表示 */
    padding: 2px 4px;
    border: 2px solid var(--color-primary);
    background-color: #f0f8ff;
    font-size: 14px;
    font-family: var(--font-family-primary);
    text-align: center;
    border-radius: var(--border-radius-small);
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    /* テキストの中心に配置するための調整 */
    transform: translate(-50%, -50%);
}

.on-canvas-editor:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 90, 156, 0.3);
}

/* ==========================================================================
   企業ロゴ
   ========================================================================== */

/* ヘッダーロゴ（右上） */
header {
    position: relative;
    margin-bottom: var(--spacing-xl);
}

.company-logo-header {
    position: absolute;
    top: 0;
    right: 0;
    z-index: 1000;
    transition: transform 0.3s ease, opacity 0.3s ease;
    text-decoration: none;
    display: block;
}

.company-logo-header:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

.company-logo-header img {
    height: 60px;
    width: auto;
    display: block;
}

/* フッターロゴ（下端中央） */
.app-footer {
    text-align: center;
    padding: var(--spacing-xl) 0;
    margin-top: 40px;
    border-top: 1px solid var(--color-border);
}

.company-logo-footer {
    display: inline-block;
    transition: transform 0.3s ease, opacity 0.3s ease;
    text-decoration: none;
}

.company-logo-footer:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

.company-logo-footer img {
    height: 80px;
    width: auto;
    display: block;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .company-logo-header img {
        height: 45px;
    }

    .company-logo-footer img {
        height: 60px;
    }

    .app-footer {
        padding: var(--spacing-lg) 0;
        margin-top: 30px;
    }
}

@media (max-width: 480px) {
    .company-logo-header img {
        height: 35px;
    }

    .company-logo-footer img {
        height: 50px;
    }

    .app-footer {
        padding: var(--spacing-md) 0;
        margin-top: 20px;
    }
}

/* === 共有リンク機能のスタイル === */
#create-share-link-btn {
    background-color: #17a2b8;
    border-color: #138496;
}
#create-share-link-btn:hover {
    background-color: #138496;
}
#copy-share-link-btn {
    background-color: #28a745;
    border-color: #218838;
}
#copy-share-link-btn:hover {
    background-color: #218838;
}