:root {
    --bg-color-light: #f4f6f8;
    --text-color-light: #333;
    --card-bg-light: #ffffff;
    --accent-color-light: #007bff;

    --accent-color-hover-light: #0056b3;
    --border-color-light: #e0e0e0;
    --header-bg-light: #ffffff;
    --nav-bg-light: #343a40;
    --nav-text-light: #f8f9fa;
    --nav-active-bg-light: #495057;

    --bg-color-dark: #121212;
    --text-color-dark: #e0e0e0;
    --card-bg-dark: #1e1e1e;
    --accent-color-dark: #4dabf7;
    --accent-color-hover-dark: #228be6;
    --border-color-dark: #333;
    --header-bg-dark: #1e1e1e;
    --nav-bg-dark: #2c2c2c;
    --nav-text-dark: #e0e0e0;
    --nav-active-bg-dark: #444;

    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
}

[data-theme="light"] {
    --bg-color: var(--bg-color-light);
    --text-color: var(--text-color-light);
    --card-bg: var(--card-bg-light);
    --accent-color: var(--accent-color-light);
    --accent-color-hover: var(--accent-color-hover-light);
    --border-color: var(--border-color-light);
    --header-bg: var(--header-bg-light);
    --nav-bg: var(--nav-bg-light);
    --nav-text: var(--nav-text-light);
    --nav-active-bg: var(--nav-active-bg-light);
}

[data-theme="dark"] {
    --bg-color: var(--bg-color-dark);
    --text-color: var(--text-color-dark);
    --card-bg: var(--card-bg-dark);
    --accent-color: var(--accent-color-dark);
    --accent-color-hover: var(--accent-color-hover-dark);
    --border-color: var(--border-color-dark);
    --header-bg: var(--header-bg-dark);
    --nav-bg: var(--nav-bg-dark);
    --nav-text: var(--nav-text-dark);
    --nav-active-bg: var(--nav-active-bg-dark);
}

body {
    font-family: 'Helvetica Neue', 'Arial', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', 'Meiryo', sans-serif;
    margin: 0;
    padding-top: 60px;
    /* Header height */
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
    line-height: 1.7;
    scrollbar-gutter: stable both-edges;
    /* モバイルでのタッチ操作改善 */
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

/* テキスト選択を許可する要素 */
p, li, td, th, h1, h2, h3, h4, h5, h6, span, div:not(.admin-toolbar) {
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
    user-select: text;
}

/* --- Header and Admin UI --- */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 8px 16px;
    z-index: 1100;
    height: 60px;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 20px;
}

header h1 {
    margin: 0;
    font-size: 1.4em;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 8px;
}

header h1 i {
    color: var(--accent-color);
    font-size: 1.1em;
}

.header-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin: 0 auto;
    width: 100%;
    max-width: 600px;
    position: relative;
}

#theme-switcher,
.admin-login-btn {
    margin-left: 10px;
}

#search-box {
    width: 100%;
    max-width: 400px;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-color);
    color: var(--text-color);
    margin: 0 auto;
}

.admin-login-btn {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.2em;
    padding: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: color 0.3s ease;
}

.admin-login-btn:hover {
    color: var(--accent-color);
}

.admin-login-btn i {
    font-size: 1.1em;
}

#theme-switcher {
    background: none;
    border: none;
    font-size: 1.2em;
    padding: 6px;
    cursor: pointer;
    color: var(--text-color);
    transition: color 0.3s ease;
}

#theme-switcher:hover {
    color: var(--accent-color);
}

#theme-switcher i {
    font-size: 1.1em;
}

/* 更新履歴のスタイル改善 */
.change-pill {
    color: #b00020;
    border: 1px solid #b00020;
    background: transparent;
    padding: 3px 6px;
    border-radius: 999px;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.85rem;
    height: 24px;
}

.change-pill .date {
    color: #b00020;
    font-size: 0.8em;
    padding-right: 4px;
    font-weight: bold;
}

.change-pill:hover {
    background: rgba(176, 0, 32, 0.1);
}

.changelog-bar {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 12px;
    padding: 6px 20px;
    border-bottom: 1px solid var(--border-color);
    background: var(--card-bg);
    position: relative;
    z-index: 900;
    overflow: hidden;
    border-radius: 8px;
    margin-top: 0;
    min-height: 36px;
    /* .main-contentと同じ幅と配置 */
    width: 96.5%;
    margin-top: 10px;
    border: 1px solid var(--border-color);
}

.changelog-bar .changelog-title {
    font-weight: bold;
    color: var(--text-color);
    white-space: nowrap;
    align-self: center;
    text-align: center;
    min-width: 120px;
    font-size: 0.9rem;
}

.changelog-bar .changelog-list {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    padding-right: calc(12px + var(--sbw, 0px));
    justify-content: flex-start;
    align-items: center;
}

.nav-container {
    position: fixed;
    left: 0;
    top: 60px;
    width: 250px;
    height: calc(100vh - 60px);
    background: var(--nav-bg);
    overflow-y: auto;
    z-index: 900;
    border-right: 1px solid var(--border-color);
}

nav ul {
    list-style: none;
    padding: 16px 0;
    margin: 0;
}

nav li {
    margin: 0;
    padding: 0;
}

nav li a {
    display: block;
    padding: 8px 16px;
    color: var(--nav-text);
    text-decoration: none;
    transition: background-color 0.2s;
    font-size: 0.95em;
    border-left: 3px solid transparent;
}

nav li a:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

nav li a.active {
    background-color: var(--nav-active-bg);
    border-left-color: var(--accent-color);
}

/* 重複削除：changelog-barの設定は上で定義済み */

.admin-toolbar {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 16px;
    background: transparent;
    position: fixed;
    top: 60px;
    right: 0;
    width: 200px;
    height: calc(100vh - 60px);
    z-index: 1000;
    border-left: none;
    overflow-y: auto;
    box-shadow: none;
    scrollbar-width: none;
    /* Firefoxのスクロールバーを非表示 */
    -ms-overflow-style: none;
    /* IEとEdgeのスクロールバーを非表示 */
}

.admin-toolbar::-webkit-scrollbar {
    display: none;
    /* Chrome, Safari, Operaのスクロールバーを非表示 */
}

.admin-toolbar {
    padding-right: calc(16px + var(--sbw, 0px));
}

.admin-toolbar[hidden] {
    display: none;
}

.admin-toolbar .btn {
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-color);
    width: 100%;
    text-align: left;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
}

.admin-toolbar .btn:hover {
    background: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
}

.admin-toolbar .btn-primary {
    background: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
}

.admin-toolbar .btn-secondary {
    opacity: 0.8;
    margin-bottom: 30px;
}

.admin-toolbar .btn-accent {
    background: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
}

.admin-toolbar .divider {
    width: 100%;
    height: 1px;
    background: var(--border-color);
    margin: 8px 0;
    opacity: 0.5;
}

.color-picker-wrap {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    right: 0;
    top: calc(100% + 6px);
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 6px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.dropdown-menu[hidden] {
    display: none;
}

.dropdown-menu button {
    text-align: left;
}

/* Editable states */
[contenteditable="true"] {
    outline: 2px dashed var(--accent-color);
    outline-offset: 2px;
}

/* Tag chips */
.tag-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 12px;
    margin-right: 6px;
    cursor: grab;
}

.tag-chip .remove {
    cursor: pointer;
    opacity: .7;
}

.tags-list {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    padding: 8px 0;
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    display: grid;
    place-items: center;
    z-index: 2000;
}

.modal[hidden] {
    display: none;
}

.modal-content {
    position: relative;
    z-index: 2;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: rgba(0, 0, 0, .18);
}

.modal-content {
    position: relative;
    background: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 16px;
    width: min(720px, 92vw);
    max-height: 90vh;
    overflow: auto;
}

.modal-lg {
    width: min(1000px, 96vw);
}

.form-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 8px 0;
}

.form-row label {
    min-width: 120px;
}

.form-row input[type="text"],
.form-row input[type="password"],
.form-row input[type="number"] {
    flex: 1;
    padding: 8px 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-color);
    color: var(--text-color);
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 10px;
}

.error-text {
    color: #b00020;
    min-height: 1.2em;
}

/* Tabs in Export */
.tabs {
    display: flex;
    gap: 6px;
    margin-bottom: 8px;
}

.tab-btn {
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    background: var(--bg-color);
    color: var(--text-color);
    border-radius: 6px;
}

.tab-btn.active {
    background: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

.copy-actions {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 6px;
}

#export-html,
#export-css,
#export-js {
    width: 100%;
    height: 320px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-color);
    color: var(--text-color);
    padding: 8px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

/* Changelog bar offset for small screens */
@media (max-width: 768px) {
    .admin-toolbar {
        top: 140px;
    }
}

.container {
    display: flex;
    max-width: 1400px;
    margin: 0 auto;
}

.main-content {
    flex-grow: 1;
    padding: 20px;
    width: calc(100% - 280px);
    /* Adjust for nav width */
}

.nav-container {
    width: 280px;
    flex-shrink: 0;
    position: sticky;
    top: 60px;
    /* Header height */
    height: calc(100vh - 60px);
    overflow-y: auto;
    background-color: var(--card-bg);
    border-right: 1px solid var(--border-color);
    padding-top: 20px;
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

nav li a {
    display: block;
    padding: 10px 20px;
    text-decoration: none;
    color: var(--text-color);
    transition: background-color 0.2s;
    font-weight: 500;
    border-left: 3px solid transparent;
}

nav li a:hover {
    background-color: var(--bg-color);
}

nav li a.active {
    background-color: var(--accent-color-light);
    color: white;
    border-left: 3px solid var(--accent-color);
}

[data-theme="dark"] nav li a.active {
    background-color: var(--accent-color-dark);
    color: var(--bg-color-dark);
}

header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    background-color: var(--header-bg);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    height: 60px;
    border-bottom: 1px solid var(--border-color);
}

header {
    padding-right: calc(20px + var(--sbw, 0px));
}

header h1 {
    font-size: 1.5rem;
    margin: 0;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 15px;
}

#search-box {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    background-color: var(--bg-color);
    color: var(--text-color);
}

#theme-switcher {
    cursor: pointer;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-color);
}

.rule-section {
    padding-top: 20px;
    margin-bottom: 40px;
    border-bottom: 1px solid var(--border-color);
}

.rule-section:last-child {
    border-bottom: none;
}

.rule-section h2 {
    font-size: 2rem;
    color: var(--accent-color);
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 10px;
    margin-bottom: 20px;
}

.rule-card {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
}

.accordion-header {
    cursor: pointer;
    padding: 15px;
    background-color: var(--bg-color);
    border-radius: 5px;
    margin-bottom: 2px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: bold;
}

.accordion-header::after {
    content: '▼';
    transition: transform 0.3s;
}

.accordion-header.active::after {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    background-color: var(--card-bg);
    padding: 0 20px;
    border-top: none;
    border-radius: 0 0 5px 5px;
}

.highlight {
    background-color: var(--warning-color);
    color: #000;
}

strong,
b {
    color: var(--accent-color);
}

.rule-important {
    border-left: 5px solid var(--danger-color);
    background-color: rgba(220, 53, 69, 0.1);
    padding: 15px;
    margin: 15px 0;
    border-radius: 5px;
}

.rule-good {
    border-left: 5px solid var(--success-color);
    background-color: rgba(40, 167, 69, 0.1);
    padding: 15px;
    margin: 15px 0;
    border-radius: 5px;
}

.rule-info {
    border-left: 5px solid var(--info-color);
    background-color: rgba(23, 162, 184, 0.1);
    padding: 15px;
    margin: 15px 0;
    border-radius: 5px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    border: 1px solid var(--border-color);
}

th,
td {
    border: 1px solid var(--border-color);
    padding: 12px;
    text-align: left;
}

/* 法律・刑罰表専用の境界線強化 */
.law-table {
    border: 1px solid var(--border-color) !important;
}

.law-table th,
.law-table td {
    border: 1px solid var(--border-color) !important;
}

/* レスポンシブテーブル */
.responsive-table {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.responsive-table::-webkit-scrollbar {
    height: 8px;
}

.responsive-table::-webkit-scrollbar-track {
    background: var(--bg-color);
    border-radius: 4px;
}

.responsive-table::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.responsive-table::-webkit-scrollbar-thumb:hover {
    background: var(--accent-color);
}

th {
    background-color: var(--bg-color);
}

code {
    background-color: rgba(128, 128, 128, 0.2);
    padding: 2px 5px;
    border-radius: 3px;
}

@media (max-width: 992px) {
    .container {
        flex-direction: column;
    }

    .nav-container {
        position: static;
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .main-content {
        width: 100%;
        padding: 15px;
    }
}

/* ===== レスポンシブデザイン強化 ===== */

/* 大画面（1200px以上） */
@media (min-width: 1200px) {
    .container {
        max-width: 1600px;
    }
    
    .main-content {
        padding: 30px;
    }
    
    .rule-section h2 {
        font-size: 2.2rem;
    }
}

/* 中画面（992px - 1199px） */
@media (max-width: 1199px) and (min-width: 993px) {
    .container {
        max-width: 1200px;
    }
    
    .nav-container {
        width: 250px;
    }
    
    .main-content {
        width: calc(100% - 250px);
    }
}

/* タブレット（768px - 992px） */
@media (max-width: 992px) {
    .container {
        flex-direction: column;
    }

    .nav-container {
        position: static;
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 10px 0;
    }

    .main-content {
        width: 100%;
        padding: 15px;
    }
    
    .rule-section h2 {
        font-size: 1.8rem;
    }
    
    .rule-card {
        padding: 15px;
    }
    
    /* テーブルの横スクロール対応 */
    .law-table {
        overflow-x: auto;
        display: block;
        white-space: nowrap;
    }
    
    .law-table thead,
    .law-table tbody,
    .law-table tr {
        display: table;
        width: 100%;
        table-layout: fixed;
    }
    
    .law-table th,
    .law-table td {
        white-space: normal;
        word-wrap: break-word;
        min-width: 120px;
    }
}

/* モバイル（768px以下） */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        height: auto;
        padding: 10px;
        gap: 10px;
    }

    header h1 {
        margin-bottom: 10px;
        font-size: 1.3rem;
        text-align: center;
    }

    body {
        padding-top: 120px; /* Adjust for taller header */
    }

    .main-content {
        padding: 10px;
    }

    .nav-container {
        top: 120px;
        height: calc(100vh - 120px);
        padding: 5px 0;
    }
    
    nav li a {
        padding: 8px 15px;
        font-size: 0.9rem;
    }
    
    .rule-section h2 {
        font-size: 1.6rem;
        margin-bottom: 15px;
    }
    
    .rule-card {
        padding: 12px;
        margin-bottom: 15px;
    }
    
    .rule-card h3 {
        font-size: 1.2rem;
    }
    
    .rule-card h4 {
        font-size: 1.1rem;
    }
    
    /* テーブルのモバイル対応 */
    .law-table {
        font-size: 0.85rem;
    }
    
    .law-table th,
    .law-table td {
        padding: 6px 8px;
        font-size: 0.8rem;
    }
    
    /* アコーディオンのモバイル対応 */
    .accordion-header {
        padding: 12px;
        font-size: 0.95rem;
    }
    
    .accordion-content {
        padding: 0 12px;
    }
    
    /* 検索ボックスのモバイル対応 */
    #search-box {
        font-size: 16px; /* iOSでのズーム防止 */
        padding: 10px 12px;
    }
    
    /* 更新履歴バーのモバイル対応 */
    .changelog-bar {
        padding: 8px 15px;
        margin-top: 5px;
        width: 95%;
    }
    
    .changelog-bar .changelog-title {
        font-size: 0.8rem;
        min-width: 100px;
    }
    
    .change-pill {
        font-size: 0.75rem;
        padding: 2px 5px;
        height: 20px;
    }
}

/* 小画面モバイル（480px以下） */
@media (max-width: 480px) {
    header {
        padding: 8px;
    }

    header h1 {
        font-size: 1.2rem;
    }

    body {
        padding-top: 110px;
    }

    .main-content {
        padding: 8px;
    }

    .nav-container {
        top: 110px;
        height: calc(100vh - 110px);
    }
    
    .rule-section h2 {
        font-size: 1.4rem;
        padding-bottom: 8px;
    }
    
    .rule-card {
        padding: 10px;
        margin-bottom: 12px;
    }
    
    .rule-card h3 {
        font-size: 1.1rem;
    }
    
    .rule-card h4 {
        font-size: 1rem;
    }
    
    /* テーブルの小画面対応 */
    .law-table {
        font-size: 0.75rem;
    }
    
    .law-table th,
    .law-table td {
        padding: 4px 6px;
        font-size: 0.7rem;
    }
    
    /* アコーディオンの小画面対応 */
    .accordion-header {
        padding: 10px;
        font-size: 0.9rem;
    }
    
    /* 検索ボックスの小画面対応 */
    #search-box {
        padding: 8px 10px;
        font-size: 14px;
    }
    
    /* 更新履歴バーの小画面対応 */
    .changelog-bar {
        padding: 6px 10px;
        width: 98%;
    }
    
    .changelog-bar .changelog-title {
        font-size: 0.75rem;
        min-width: 80px;
    }
    
    .change-pill {
        font-size: 0.7rem;
        padding: 1px 4px;
        height: 18px;
    }
    
    /* ボタンの小画面対応 */
    button {
        padding: 8px 12px;
        font-size: 0.9rem;
    }
}

/* 超小画面（320px以下） */
@media (max-width: 320px) {
    .rule-section h2 {
        font-size: 1.2rem;
    }
    
    .rule-card {
        padding: 8px;
    }
    
    .law-table th,
    .law-table td {
        padding: 3px 4px;
        font-size: 0.65rem;
    }
    
    .changelog-bar {
        padding: 4px 8px;
    }
    
    .changelog-bar .changelog-title {
        font-size: 0.7rem;
        min-width: 70px;
    }
}

/* 横画面モバイル対応 */
@media (max-width: 768px) and (orientation: landscape) {
    .nav-container {
        height: calc(100vh - 80px);
        top: 80px;
    }
    
    body {
        padding-top: 80px;
    }
    
    header {
        height: 60px;
        padding: 5px 10px;
    }
}

/* 高解像度ディスプレイ対応 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .rule-section h2 {
        font-weight: 600;
    }
    
    .rule-card {
        box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
    }
}

/* プリント対応 */
@media print {
    .nav-container,
    .admin-toolbar,
    .changelog-bar,
    header {
        display: none !important;
    }
    
    .main-content {
        width: 100% !important;
        padding: 0 !important;
        margin: 0 !important;
    }
    
    .rule-section {
        page-break-inside: avoid;
        margin-bottom: 20px;
    }
    
    .rule-card {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}