/* ERAG Modern Light Theme - Apple-inspired design */
:root {
  /* Primary colors from ERAG logo */
  --erag-blue: #2aaae2;
  --erag-teal: #4bbfb4;
  --erag-gradient-start: #2aaae2;
  --erag-gradient-end: #4bbfb4;

  /* Light theme colors */
  --erag-bg-primary: #ffffff;
  --erag-bg-secondary: #f5f7fa;
  --erag-bg-tertiary: #eef1f5;
  --erag-text-primary: #333333;
  --erag-text-secondary: #666666;
  --erag-text-muted: #8c8c8c;
  --erag-border: #e0e5ec;
  --erag-shadow: rgba(0, 0, 0, 0.07);

  /* Accent colors */
  --erag-accent: var(--erag-teal);
  --erag-danger: #ff3b30;
  --erag-warning: #ff9500;
  --erag-success: #34c759;
  --erag-info: var(--erag-blue);

  /* Credit usage colors */
  --erag-credit-normal: var(--erag-teal);
  --erag-credit-warning: var(--erag-warning);
  --erag-credit-danger: var(--erag-danger);

  /* Chat history colors */
  --erag-shared-chat: #f0f8ff;
}

body {
  background-color: var(--erag-bg-secondary);
  color: var(--erag-text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

/* Navigation bar styling */
.navbar {
  background-color: var(--erag-bg-primary) !important;
  box-shadow: 0 1px 3px var(--erag-shadow);
  padding: 0.5rem 1rem;
}

.navbar-brand {
  font-weight: 600;
  color: var(--erag-text-primary) !important;
}

.navbar-dark {
  background: linear-gradient(to right, var(--erag-gradient-start), var(--erag-gradient-end)) !important;
}

.navbar-dark .navbar-brand,
.navbar-dark .nav-link {
  color: white !important;
}

.nav-link {
  color: var(--erag-text-secondary) !important;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  transition: all 0.2s ease;
}

.nav-link:hover,
.nav-link:focus {
  color: var(--erag-accent) !important;
  background-color: var(--erag-bg-tertiary);
}

.nav-link.active {
  color: var(--erag-accent) !important;
  background-color: rgba(75, 191, 180, 0.1);
}

/* Cards and containers */
.card, .form-container {
  background-color: var(--erag-bg-primary);
  border-radius: 12px;
  border: none;
  box-shadow: 0 2px 8px var(--erag-shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--erag-shadow);
}

/* Buttons */
.btn {
  border-radius: 8px;
  font-weight: 500;
  padding: 0.5rem 1rem;
  transition: all 0.2s ease;
  border: none;
}

.btn-primary {
  background: linear-gradient(to right, var(--erag-gradient-start), var(--erag-gradient-end));
  border: none;
}

.btn-primary:hover,
.btn-primary:focus {
  background: linear-gradient(to right, var(--erag-blue), var(--erag-teal));
  box-shadow: 0 2px 8px rgba(42, 170, 226, 0.3);
  transform: translateY(-1px);
}

.btn-outline-primary {
  color: var(--erag-blue);
  border: 1px solid var(--erag-blue);
}

.btn-outline-primary:hover {
  background-color: rgba(42, 170, 226, 0.1);
  color: var(--erag-blue);
}

/* Forms */
.form-control {
  border-radius: 8px;
  border: 1px solid var(--erag-border);
  padding: 0.75rem 1rem;
  background-color: var(--erag-bg-primary);
  color: var(--erag-text-primary);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus {
  border-color: var(--erag-accent);
  box-shadow: 0 0 0 3px rgba(75, 191, 180, 0.25);
}

.form-label {
  font-weight: 500;
  color: var(--erag-text-secondary);
  margin-bottom: 0.5rem;
}

/* Tables */
.table {
  border-collapse: separate;
  border-spacing: 0;
  width: 100%;
  border-radius: 8px;
  overflow: hidden;
  background: var(--erag-bg-primary);
  box-shadow: 0 1px 3px var(--erag-shadow);
}

.table th {
  background-color: var(--erag-bg-tertiary);
  color: var(--erag-text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.5px;
  padding: 1rem;
}

.table td {
  padding: 1rem;
  border-top: 1px solid var(--erag-border);
  color: var(--erag-text-primary);
}

.table tr:hover {
  background-color: rgba(245, 247, 250, 0.5);
}

/* Alerts */
.alert {
  border-radius: 8px;
  border: none;
  padding: 1rem;
}

.alert-success {
  background-color: rgba(52, 199, 89, 0.1);
  color: var(--erag-success);
}

.alert-danger {
  background-color: rgba(255, 59, 48, 0.1);
  color: var(--erag-danger);
}

.alert-warning {
  background-color: rgba(255, 149, 0, 0.1);
  color: var(--erag-warning);
}

.alert-info {
  background-color: rgba(42, 170, 226, 0.1);
  color: var(--erag-info);
}

/* Custom animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.3s ease forwards;
}

/* Apple-inspired typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  color: var(--erag-text-primary);
}

h1 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

a {
  color: var(--erag-blue);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--erag-teal);
}

/* Container with a max-width for better readability */
.container {
  max-width: 1200px;
  padding: 0 1rem;
}

/* ERAG logo styling */
.erag-logo {
  height: 40px;
  margin-right: 0.5rem;
}

/* Badge styling */
.badge {
  font-weight: 500;
  padding: 0.35em 0.65em;
  border-radius: 6px;
}

.badge-primary {
  background-color: var(--erag-blue);
}

.badge-success {
  background-color: var(--erag-success);
}

.badge-warning {
  background-color: var(--erag-warning);
}

.badge-danger {
  background-color: var(--erag-danger);
}

/* Custom scrollbar for webkit browsers */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--erag-bg-tertiary);
}

::-webkit-scrollbar-thumb {
  background: #c1c9d3;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #a8b2bf;
}

/* Credit Usage */
.credit-usage-container {
  padding: 15px;
  background-color: var(--erag-bg-primary);
  border-bottom: 1px solid var(--erag-border);
}

#credit-usage-bar {
  background-color: var(--erag-accent);
  transition: width 0.5s ease-in-out;
}

#credit-usage-bar.warning {
  background-color: var(--erag-danger);
}
.minutes-table th {
    cursor: pointer;
}

.minutes-table th:hover {
    background-color: var(--erag-bg-tertiary);
}

.status-processing {
    color: var(--erag-warning);
}

.status-completed {
    color: var(--erag-success);
}

.status-error {
    color: var(--erag-danger);
}

.create-minutes-btn {
    margin-bottom: 1rem;
}

.auth-form {
    max-width: 400px;
    margin: 2rem auto;
    padding: 1rem;
}

.form-container {
    background-color: var(--erag-bg-primary);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 2px 8px var(--erag-shadow);
}

/* チャット画面のスタイル - 画面いっぱいの横幅でサイドメニュー左端固定 */
.chat-container {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    height: calc(100vh - 70px);
    margin: 0;
    background-color: var(--erag-bg-primary);
    box-shadow: none;
    border-radius: 0;
}

/* マークダウン表示を改善するためのスタイル */
.chat-message-content {
    white-space: pre-wrap;
}

/* マークダウンのリスト表示を改善 */
.chat-message-content ul {
    padding-left: 1.25rem;
    margin: 0rem 0;
    list-style-position: outside;
}

.chat-message-content ul {
    margin: 0rem 0;
}

.chat-message-content ul li {
    margin: 0rem 0; /* リスト項目間の余白を縮小 */
    padding-left: 0.1em;
}

/* マークダウンの段落間の余白を縮小 */
.chat-message-content p {
    margin: 0rem 0; /* 通常の段落間の余白を1/3に縮小 */
}

/* リストアイテムにぶら下がる内容の余白調整 */
.chat-message-content li p {
    margin: 0.05rem 0;
}

/* 入れ子のリストの余白調整 */
.chat-message-content li ul {
    margin: 0rem 0;
    padding-left: 1rem;
}

/* 見出しの余白調整 */
.chat-message-content h1, 
.chat-message-content h2, 
.chat-message-content h3, 
.chat-message-content h4 {
    margin-top: 0rem;
    margin-bottom: 0rem;
}

/* コードブロックの余白調整 */
.chat-message-content pre {
    margin: 0rem 0;
}

.chat-sidebar {
    position: fixed;
    top: 70px;
    left: 0;
    width: 300px;
    height: calc(100vh - 70px);
    border-right: 1px solid var(--erag-border);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    background-color: var(--erag-bg-secondary);
    z-index: 100;
}

.chat-history {
    flex-grow: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.chat-history-header {
    font-weight: 450;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--erag-border);
    color: var(--erag-text-primary);
    font-size: 1rem;
}

.chat-history-list {
    overflow-y: auto;
    flex-grow: 1;
}

.chat-history-item {
    padding: 0.75rem 1rem;
    margin-bottom: 0.75rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    background-color: var(--erag-bg-primary);
    border: 1px solid transparent;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.chat-history-item:hover {
    background-color: var(--erag-bg-primary);
    border-color: var(--erag-border);
    transform: translateY(-1px);
}

.chat-history-item.active {
    background-color: rgba(42, 170, 226, 0.08);
    border-color: rgba(42, 170, 226, 0.2);
    box-shadow: 0 1px 3px rgba(42, 170, 226, 0.1);
}

.chat-history-title-container {
    display: flex !important;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    min-height: 24px;
}

.chat-history-title {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-right: 8px;
}

.chat-actions {
    flex-shrink: 0;
    display: flex !important;
    gap: 4px;
}

.menu-btn, .shared-icon {
    font-size: 0.85rem;
    padding: 0.2rem 0.4rem;
    background: transparent;
    border: none;
    color: var(--erag-text-secondary);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    border-radius: 4px;
}

.menu-btn:hover {
    color: var(--erag-blue);
    background-color: var(--erag-bg-tertiary);
}

/* チャットメニュードロップダウンのスタイル */
.chat-menu-dropdown {
    background-color: var(--erag-bg-primary);
    border: 1px solid var(--erag-border);
    border-radius: 8px;
    box-shadow: 0 4px 12px var(--erag-shadow);
    padding: 0.5rem 0;
    margin: 0;
}

.chat-menu-dropdown .dropdown-item {
    padding: 0.5rem 1rem;
    color: var(--erag-text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    transition: background-color 0.2s ease;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}

.chat-menu-dropdown .dropdown-item:hover {
    background-color: var(--erag-bg-tertiary);
    color: var(--erag-text-primary);
}

.chat-menu-dropdown .dropdown-item.text-danger {
    color: var(--erag-danger);
}

.chat-menu-dropdown .dropdown-item.text-danger:hover {
    background-color: rgba(255, 59, 48, 0.1);
    color: var(--erag-danger);
}

.chat-menu-dropdown .dropdown-divider {
    margin: 0.5rem 0;
    border-top: 1px solid var(--erag-border);
}

/* 成功メッセージのスタイル */
.chat-success-message {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1050;
    min-width: 300px;
    text-align: center;
    border-radius: 8px;
    box-shadow: 0 4px 12px var(--erag-shadow);
}

.shared-chat {
    background-color: var(--erag-shared-chat);
}

.chat-history-preview {
    font-size: 0.85rem;
    color: var(--erag-text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-history-empty {
    text-align: center;
    padding: 2rem;
    color: var(--erag-text-muted);
    font-style: italic;
}

.chat-window {
    position: fixed;
    top: 70px;
    left: 300px;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    background-color: var(--erag-bg-primary);
    height: calc(100vh - 70px);
}

/* Claude風画面分割モード */
.chat-window.split-mode {
    flex-direction: row;
}

.chat-window.split-mode .chat-messages {
    border-right: 1px solid var(--erag-border);
    width: 50%;
}

/* 分割モード時の入力エリアを左側に配置 */
.chat-window.split-mode .chat-input-container {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50%;
    z-index: 10;
}

/* コード表示パネル */
.code-display-panel {
    width: 50%;
    height: 100%;
    background-color: var(--erag-bg-primary);
    display: flex;
    flex-direction: column;
    border-left: 1px solid var(--erag-border);
    position: relative;
}

/* リサイザー */
.panel-resizer {
    position: absolute;
    left: -3px;
    top: 0;
    width: 6px;
    height: 100%;
    cursor: ew-resize;
    background-color: transparent;
    z-index: 20;
    transition: background-color 0.2s ease;
}

.panel-resizer:hover {
    background-color: var(--erag-accent);
    opacity: 0.7;
}

.panel-resizer.resizing {
    background-color: var(--erag-accent);
    opacity: 1;
}

.code-panel-header {
    background-color: var(--erag-bg-secondary);
    border-bottom: 1px solid var(--erag-border);
    flex-shrink: 0;
}

.code-panel-content {
    flex-grow: 1;
    overflow-y: auto;
    padding: 1rem;
    background-color: #f8f9fa;
}

.code-panel-content pre {
    margin: 0;
    background-color: #ffffff;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 1rem;
    font-size: 14px;
    line-height: 1.5;
    overflow-x: auto;
}

.code-panel-content code {
    background-color: transparent;
    padding: 0;
    border: none;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
}

/* コードリンクのスタイル */
.code-link-wrapper {
    transition: all 0.2s ease;
    cursor: pointer;
    margin: 0.5rem 0 !important;
    display: block !important;
    overflow: hidden !important;
    height: 60px !important; /* 確実に2行分の高さに固定 */
}

.code-link-wrapper .card {
    height: 100% !important;
    margin: 0 !important;
}

.code-link-wrapper .card-body {
    padding: 0.75rem !important;
    min-height: auto !important;
    height: 100% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
}

.code-link-wrapper .d-flex {
    align-items: center !important;
    height: 100% !important;
    width: 100% !important;
    min-height: auto !important;
    max-height: none !important;
    overflow: hidden !important;
    padding: 0 !important;
    flex-wrap: nowrap !important;
    margin: 0 !important;
    gap: 0.5rem !important;
    transform: translateY(-25px) !important;
}

.code-link-wrapper .d-flex .flex-grow-1 {
    overflow: hidden !important;
    display: flex !important;
    align-items: center !important;
    justify-content: flex-start !important;
    min-height: 0 !important;
    height: 100% !important;
}

.code-link-wrapper .d-flex .flex-grow-1 div {
    display: flex !important;
    align-items: center !important;
    justify-content: flex-start !important;
    height: 100% !important;
    line-height: 1.2 !important;
    font-size: 0.9rem !important;
    margin: 0 !important;
    padding: 0 !important;
    word-wrap: break-word !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    width: 100% !important;
}

.code-link-wrapper .d-flex .ms-auto {
    flex-shrink: 0 !important;
    display: flex !important;
    align-items: center !important;
    margin-left: 0.5rem !important;
    transform: translateY(0) !important;
}

/* アイコンと矢印の位置調整 */
.code-link-wrapper i {
    transform: translateY(-10px) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
}

/* 矢印アイコンの位置調整 */
.code-link-wrapper .ms-auto i {
    transform: translateY(-10px) !important;
}

/* 言語アイコンの位置調整 */
.code-link-wrapper .language-icon {
    transform: translateY(-10px) !important;
}

/* 絵文字アイコンの位置調整 */
.code-link-wrapper .me-2 {
    transform: translateY(-10px) !important;
    display: inline-flex !important;
    align-items: center !important;
}

/* Bootstrap arrow iconの位置調整 */
.code-link-wrapper .bi-arrow-right {
    transform: translateY(-10px) !important;
}

.code-link-wrapper .d-flex .flex-grow-1 .text-muted {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 0.9rem;
}

.code-link-wrapper:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* プレビュー用CSS */
.preview-container {
    background-color: #f8f9fa;
    border-radius: 8px;
    min-height: 300px;
}

.nav-tabs .nav-link {
    border-radius: 0;
    border: none;
    border-bottom: 2px solid transparent;
    padding: 0.75rem 1rem;
}

.nav-tabs .nav-link.active {
    background-color: transparent;
    border-bottom-color: var(--erag-primary);
    color: var(--erag-primary);
}

/* モバイル対応 - コード表示時は全画面に変更 */
@media (max-width: 768px) {
    /* コード表示時はメニュー・サイドバーを隠す */
    body.split-mode-active .navbar,
    body.split-mode-active .header,
    body.split-mode-active .sidebar,
    body.split-mode-active .chat-header,
    body.split-mode-active nav,
    body.split-mode-active .navbar-toggler,
    body.split-mode-active .menu-toggle {
        display: none !important;
        visibility: hidden !important;
    }
    
    .chat-window.split-mode {
        flex-direction: column;
        position: fixed !important;
        top: 0 !important; /* 画面最上部から開始 */
        left: 0 !important;
        right: 0 !important;
        bottom: 0 !important;
        height: 100vh !important; /* ビューポート全体の高さ */
        z-index: 2000 !important; /* 最前面に表示 */
    }
    
    .chat-window.split-mode .chat-messages {
        width: 100% !important;
        height: 0% !important; /* チャット履歴を非表示に */
        border-right: none;
        border-bottom: 1px solid var(--erag-border);
        overflow: hidden; /* チャット履歴を完全に隠す */
    }
    
    .chat-window.split-mode .chat-input-container {
        width: 100% !important;
        left: 0 !important;
        bottom: 0 !important;
        position: fixed !important; /* モバイルでは画面下部に固定 */
        z-index: 1000 !important; /* コード表示の上に配置 */
        background-color: var(--erag-bg-primary) !important;
        border-top: 1px solid var(--erag-border) !important;
    }
    
    .code-display-panel {
        width: 100% !important;
        height: 100vh !important; /* ビューポート全体の高さ */
        border-left: none !important; /* モバイルでは左ボーダーを削除 */
        position: fixed !important;
        top: 0 !important; /* 画面最上部から開始 */
        left: 0 !important;
        right: 0 !important;
        z-index: 900 !important;
    }
    
    /* モバイルでのコードパネルヘッダーに上部マージンを追加 */
    .code-panel-header {
        padding-top: 60px !important; /* ブラウザメニューバーと重複しないよう上部マージン追加 */
        background-color: var(--erag-bg-secondary) !important;
    }
}

.chat-messages {
    flex-grow: 1;
    overflow-y: auto;
    padding: 1rem 1rem 4rem 1rem; /* 下部余白を4remに増加してコピーボタン分のスペースを確保 */
    display: flex;
    flex-direction: column;
    background-color: var(--erag-bg-primary);
    width: 100%;
}

.chat-welcome {
    text-align: center;
    margin: auto;
    padding: 3rem 2rem;
    color: var(--erag-text-muted);
    max-width: 500px;
    line-height: 1.6;
}

.chat-welcome h2 {
    color: var(--erag-text-primary);
    margin-bottom: 1rem;
    font-weight: 600;
}

.chat-message {
    width: auto;
    margin-bottom: 0.25rem;
    padding: 0.9rem 1.2rem;
    border-radius: 12px;
    word-break: break-word;
    line-height: 1.4;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    transition: all 0.2s ease;
    animation: fadeIn 0.3s ease;
}

.chat-message.user {
    background: linear-gradient(to right, var(--erag-gradient-start), var(--erag-gradient-end));
    color: white;
    align-self: flex-end;
    border-bottom-right-radius: 4px;
    max-width: 85%;
}

.chat-message.assistant {
    background-color: var(--erag-bg-tertiary);
    color: var(--erag-text-primary);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
    min-width: fit-content;
    max-width: 100%;
    width: auto;
}

.chat-message-content {
    white-space: pre-wrap;
}

.chat-message-thinking {
    color: var(--erag-text-muted);
    font-style: italic;
    margin-bottom: 1rem;
    align-self: flex-start;
    padding: 0.5rem 1rem;
    animation: pulse 1.5s ease infinite;
}

@keyframes pulse {
    0% { opacity: 0.5; }
    50% { opacity: 1; }
    100% { opacity: 0.5; }
}

.chat-input-container {
    padding: 0.5rem 1.25rem;
    border-top: 1px solid var(--erag-border);
    background-color: var(--erag-bg-secondary);
}

.chat-form {
    display: flex;
    flex-direction: column;
}

.chat-input-group {
    display: flex;
    align-items: center;
    background-color: var(--erag-bg-primary);
    border-radius: 12px;
    padding: 0.35rem;
    border: 1px solid var(--erag-border);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.chat-input-group:focus-within {
    border-color: var(--erag-accent);
    box-shadow: 0 0 0 3px rgba(75, 191, 180, 0.15);
}

.attachment-btn {
    border-radius: 8px;
    margin-right: 0.5rem;
    background-color: transparent;
    color: var(--erag-text-secondary);
    border: none;
}

.attachment-btn:hover {
    background-color: var(--erag-bg-tertiary);
    color: var(--erag-accent);
}

.send-btn {
    border-radius: 8px;
    margin-left: 0.5rem;
    background: linear-gradient(to right, var(--erag-gradient-start), var(--erag-gradient-end));
    color: white;
    border: none;
}

.file-name {
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 0.85rem;
    padding: 0.5rem;
    color: #2c3e50 !important;
    background-color: rgba(255, 255, 255, 0.9);
    border: 1px solid #dee2e6;
    border-radius: 4px;
    margin: 0.5rem 0;
    font-weight: 500;
}

#message-input {
    resize: none;
    min-height: 24px;
    max-height: 200px;
    overflow-y: auto;
    transition: height 0.1s ease;
    border: none;
    flex-grow: 1;
    padding: 0.75rem;
    background-color: transparent;
    color: var(--erag-text-primary);
}

#message-input:focus {
    outline: none;
}

/* ファイル添付関連のスタイル */
.chat-message-file {
    margin-top: 0.75rem;
    font-size: 0.85rem;
    background-color: rgba(0, 0, 0, 0.04);
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    display: inline-block;
}

.chat-message-file a {
    color: var(--erag-blue);
    text-decoration: none;
    display: flex;
    align-items: center;
    background-color: rgba(255, 255, 255, 0.9) !important;
    padding: 0.3rem 0.5rem;
    border-radius: 4px;
    margin: 0.2rem 0;
}

.chat-message-file a:hover {
    text-decoration: underline;
    background-color: rgba(255, 255, 255, 1) !important;
}

.chat-message-file a::before {
    content: "📎";
    margin-right: 0.5rem;
}

.chat-message-files {
    margin-top: 0.75rem;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    padding-top: 0.75rem;
}

.chat-message-files-header {
    font-size: 0.85rem;
    margin-bottom: 0.75rem;
    font-weight: 600;
    color: var(--erag-text-secondary);
    background-color: rgba(255, 255, 255, 0.9) !important;
    padding: 0.3rem 0.5rem;
    border-radius: 4px;
    margin: 0.2rem 0;
}

.chat-message.user .chat-message-files-header {
    color: #2c3e50 !important;
    background-color: rgba(255, 255, 255, 0.9) !important;
}

.file-text {
    color: #2c3e50 !important;
    opacity: 1 !important;
    background-color: rgba(255, 255, 255, 0.9) !important;
    padding: 0.3rem 0.5rem;
    border-radius: 4px;
    margin: 0.2rem 0;
    font-weight: 500;
}

/* 添付ファイル表示エリア */
.attached-files-container {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--erag-border);
    background-color: var(--erag-bg-tertiary);
    max-height: 200px;
    overflow-y: auto;
}

.attached-file-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.75rem;
    margin-bottom: 0.5rem;
    background-color: var(--erag-bg-primary);
    border: 1px solid var(--erag-border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.attached-file-item:hover {
    background-color: var(--erag-bg-secondary);
    border-color: var(--erag-accent);
}

.attached-file-icon {
    font-size: 1.2rem;
    color: var(--erag-accent);
    flex-shrink: 0;
}

.attached-file-info {
    flex-grow: 1;
    min-width: 0;
}

.attached-file-name {
    font-weight: 500;
    color: #2c3e50 !important;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    background-color: rgba(255, 255, 255, 0.9);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
}

.attached-file-size {
    font-size: 0.8rem;
    color: #666666 !important;
    background-color: rgba(255, 255, 255, 0.8);
    padding: 0.1rem 0.3rem;
    border-radius: 3px;
}

.attached-file-remove {
    background: none;
    border: none;
    color: var(--erag-text-secondary);
    font-size: 1rem;
    padding: 0.25rem;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.attached-file-remove:hover {
    color: #dc3545;
    background-color: rgba(220, 53, 69, 0.1);
}

/* ドラッグ&ドロップエリア */
.drop-zone {
    position: relative;
}

.drop-zone.drag-over {
    background-color: rgba(75, 191, 180, 0.1);
    border-color: var(--erag-accent);
    box-shadow: 0 0 0 3px rgba(75, 191, 180, 0.15);
}

/* モバイルでは「＞」ボタン（show-sidebar）を完全に非表示 */
@media (max-width: 768px) {
    #show-sidebar {
        display: none !important;
    }
}

.drop-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(75, 191, 180, 0.9);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 500;
    border-radius: 12px;
    z-index: 10;
    pointer-events: none;
}

/* Pastedファイルスタイル */
.attached-file-item.pasted-file {
    border-left: 4px solid var(--erag-accent);
}

.attached-file-item.pasted-file .attached-file-icon {
    color: var(--erag-accent);
}

/* クリップボード画像ファイルスタイル */
.attached-file-item.clipboard-image {
    border-left: 4px solid #6c757d;
}

.attached-file-item.clipboard-image .attached-file-icon {
    color: #6c757d;
}

/* Chat folder styling */
.chat-folder {
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 0.375rem;
    transition: background-color 0.2s ease;
}

.chat-folder:hover {
    background-color: var(--erag-bg-tertiary);
}

.chat-folder.active {
    background-color: var(--erag-blue);
    color: white;
}

.chat-folder.active .folder-name {
    color: white;
}

.chat-folder.active .badge {
    background-color: rgba(255, 255, 255, 0.3) !important;
    color: white;
}

/* 画像表示のスタイル */
.chat-message img {
    max-width: 400px;
    max-height: 300px;
    width: auto;
    height: auto;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    display: block;
    margin: 10px 0;
}

.chat-message img:hover {
    transform: scale(1.02);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* 画像拡大モーダル */
.image-modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    cursor: pointer;
}

.image-modal img {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    max-width: 95%;
    max-height: 95%;
    width: auto;
    height: auto;
    cursor: pointer;
    border-radius: 8px;
    box-shadow: none;
}

.image-modal .close-btn {
    position: absolute;
    top: 20px;
    right: 30px;
    color: white;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    z-index: 10000;
    user-select: none;
}

.image-modal .close-btn:hover {
    color: #ccc;
}

/* Mobile responsiveness improvements */
@media (max-width: 768px) {
    /* Hide header elements by default on mobile */
    .mobile-header {
        display: none;
    }

    /* Show header when toggle is active */
    .mobile-header.show {
        display: block;
    }

    /* Mobile toggle button styling */
    .mobile-toggle {
        position: fixed;
        top: 10px;
        right: 10px;
        z-index: 1050;
        background: var(--erag-blue);
        color: white;
        border: none;
        border-radius: 50%;
        width: 44px;
        height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
        transition: all 0.3s ease;
    }

    .mobile-toggle:hover {
        background: var(--erag-teal);
        transform: scale(1.05);
    }

    /* Mobile navigation improvements */
    .navbar {
        padding: 0.5rem 1rem;
    }

    .navbar-brand {
        font-size: 1.1rem;
    }

    /* Chat input improvements for mobile */
    .chat-input-container {
        padding: 0.5rem 0.75rem 1rem 0.75rem; /* 上下のパディングを増加 */
        background: var(--erag-bg-primary);
        border-top: 1px solid var(--erag-border);
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 10;
        box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.1); /* 上部に影を追加 */
    }

    /* モバイルでのチャットコンテナ最大化 */
    .chat-container {
        height: calc(100vh - 56px);
        margin-top: 0;
        margin-bottom: 0;
        border-radius: 0; /* モバイルでは角丸を削除して最大化 */
    }

    .chat-input-form {
        max-width: 100%;
    }

    .chat-input-form textarea {
        font-size: 16px; /* Prevents zoom on iOS */
        border-radius: 1.25rem;
        padding: 0.75rem 1rem;
        resize: none;
        min-height: 44px; /* Ensures proper touch target */
        line-height: 1.4;
        max-height: 120px;
        overflow-y: auto;
    }

    .chat-input-form textarea:focus {
        outline: none;
        border-color: var(--erag-blue);
        box-shadow: 0 0 0 3px rgba(42, 170, 226, 0.1);
    }

    /* Mobile chat messages */
    .chat-messages {
        padding: 0.25rem 0.25rem 1rem 0.25rem; /* 下部に十分な余白を追加 */
        margin-bottom: 0;
        height: calc(100vh - 160px); /* 入力エリアの増加分を反映 */
        overflow-y: auto; /* スクロール有効化 */
        padding-bottom: 3rem; /* 下部コンテンツのための十分な余白 */
    }

    .chat-message {
        margin-bottom: 1.5rem; /* メッセージ間の余白を増加 */
        max-width: 85%;
    }
    
    /* モバイルでのコピーボタン用追加余白 */
    .chat-message:last-child {
        margin-bottom: 3rem; /* 最後のメッセージに十分な余白 */
    }

    .chat-message.user {
        margin-left: auto;
        margin-right: 0;
    }

    .chat-message.assistant {
        margin-left: 0;
        margin-right: auto;
    }

    /* Mobile sidebar improvements */
    .chat-sidebar {
        position: fixed;
        top: 0;
        left: -100%;
        width: 280px;
        height: 100vh;
        background: var(--erag-bg-primary);
        border-right: 1px solid var(--erag-border);
        transition: left 0.3s ease;
        z-index: 1040;
        overflow-y: auto;
        padding: 1rem;
    }

    .chat-sidebar.show {
        left: 0;
    }

    /* チャットウィンドウのモバイル調整 */
    .chat-window {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        display: flex;
        flex-direction: column;
        background-color: var(--erag-bg-primary);
        height: 100vh;
    }

    /* Mobile overlay removed - using click outside detection instead */

    /* Mobile button improvements */
    .btn {
        min-height: 44px;
        padding: 0.75rem 1rem;
    }

    .btn-sm {
        min-height: 36px;
        padding: 0.5rem 0.75rem;
    }

    /* Mobile form improvements */
    .form-control {
        font-size: 16px; /* Prevents zoom on iOS */
        min-height: 44px;
    }

    .form-select {
        font-size: 16px;
        min-height: 44px;
    }

    /* Mobile modal improvements */
    .modal-dialog {
        margin: 0.5rem;
        max-width: calc(100% - 1rem);
    }

    /* Mobile credit usage display */
    .credit-usage-mobile {
        position: fixed;
        bottom: 100px;
        right: 10px;
        background: var(--erag-bg-primary);
        border-radius: 0.5rem;
        padding: 0.5rem 0.75rem;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
        font-size: 0.85rem;
        z-index: 20;
    }

    /* Mobile touch improvements */
    .chat-history-item {
        min-height: 48px;
        padding: 0.75rem;
        display: flex;
        align-items: center;
    }

    .chat-history-item:active {
        background-color: var(--erag-bg-tertiary);
    }

    /* Mobile file upload improvements */
    .file-upload-area {
        padding: 1rem;
        border-radius: 0.5rem;
        border: 2px dashed var(--erag-border);
        text-align: center;
        cursor: pointer;
        transition: all 0.3s ease;
    }

    .file-upload-area:hover,
    .file-upload-area:active {
        border-color: var(--erag-blue);
        background-color: var(--erag-bg-tertiary);
    }

    /* モバイル表示でのコピーボタンの改善 */
    .copy-message-btn {
        font-size: 0.8rem;
        padding: 0.25rem 0.5rem;
        min-height: 32px;
        margin-top: 0.5rem;
        display: inline-flex !important; /* モバイルでは常時表示 */
        align-items: center;
    }
    
    /* モバイルでメッセージコピーアクションを常時表示 */
    .message-copy-actions {
        display: block !important; /* モバイルでは常時表示 */
        opacity: 1 !important;
        visibility: visible !important;
    }
    
    /* デスクトップでのホバー表示を上書き - モバイルでは常時表示 */
    @media (max-width: 768px) {
        .message-copy-actions {
            display: block !important;
            visibility: visible !important;
            opacity: 1 !important;
            height: auto !important;
            max-height: none !important;
        }
        
        .copy-message-btn {
            display: inline-flex !important;
            visibility: visible !important;
            opacity: 1 !important;
        }
        
        /* モバイルでコピーボタンが入力ボックスに隠れないよう十分な下部余白を確保 */
        .chat-messages {
            padding-bottom: 5rem !important; /* モバイルでは5remの余白を確保 */
        }
    }
        gap: 0.25rem;
    }

    .copy-actions {
        margin-top: 0.5rem;
        display: flex;
        justify-content: flex-end;
    }

    @media (max-width: 768px) {
        .menu-btn,
        .shared-icon {
            padding: 2px 6px;
            min-width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* モバイルでのコピーボタンの表示を確実にする */
        .copy-message-btn {
            font-size: 0.75rem;
            padding: 0.375rem 0.75rem;
            min-height: 36px;
            margin-top: 0.75rem;
            display: inline-flex !important;
            align-items: center;
            gap: 0.25rem;
            border-radius: 6px;
        }

        .copy-actions {
            margin-top: 0.75rem;
            display: flex !important;
            justify-content: flex-end;
        }
    }
}



/* レスポンシブ対応 */
@media (max-width: 768px) {
    .chat-message img {
        max-width: 280px;
        max-height: 200px;
    }
    
    .image-modal .close-btn {
        top: 10px;
        right: 20px;
        font-size: 30px;
    }
}