:root {
    --dark-bg: #1e2431;
    --darker-bg: #161b26;
    --medium-bg: #2a3142;
    --light-bg: #3a4156;
    --accent-color: #2563eb;
    --accent-hover: #1d4ed8;
    --text-light: #e6e6e6;
    --text-medium: #b8b8b8;
    --text-dark: #8a8a8a;
    --text-muted: #b8b8b8;
    --danger-color: #ff6b6b;
    --danger-hover: #ff5252;
    --success-color: #4ecdc4;
    --message-user: #2a7c7b;
    --message-bot: #2f394d;
    --border-color: #3a4156;
    --highlight-color: #ffeb3b;
    --success-green: #4caf50;
    --warning-orange: #ff9800;
    --info-blue: #2196f3;
}

/* 銘柄監視関連のスタイル */
.watchlist-management {
    padding: 20px;
    background-color: var(--medium-bg);
    border-radius: 8px;
    margin-top: 20px;
}

.watchlist-input-area {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.watchlist-display {
    max-height: 400px;
    overflow-y: auto;
}

.watchlist-item {
    background-color: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.watchlist-info h4 {
    margin: 0 0 5px 0;
    color: var(--accent-color);
    font-size: 1.2em;
}

.watchlist-info p {
    margin: 3px 0;
    color: var(--text-medium);
    font-size: 0.9em;
}

.watchlist-actions {
    display: flex;
    gap: 10px;
    flex-direction: column;
}

.view-chart-btn, .remove-watchlist-btn {
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85em;
    transition: background-color 0.3s;
    min-width: 80px;
}

.view-chart-btn {
    background-color: var(--accent-color);
    color: var(--dark-bg);
}

.view-chart-btn:hover {
    background-color: var(--accent-hover);
}

.remove-watchlist-btn {
    background-color: var(--danger-color);
    color: white;
}

.remove-watchlist-btn:hover {
    background-color: var(--danger-hover);
}

#stock-chart-container {
    background-color: var(--medium-bg);
    border-radius: 8px;
    padding: 20px;
    border: 1px solid var(--border-color);
}

#stock-price-chart {
    width: 100% !important;
    max-height: 400px;
}

.error {
    color: var(--danger-color) !important;
}

body {
    background-color: var(--dark-bg);
    color: var(--text-light);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px;
    display: flex;
    flex-direction: row;
    gap: 32px;
}

@media (max-width: 768px) {
    .container {
        flex-direction: column;
        padding: 10px;
        gap: 15px;
    }
    
    .mypage-menu {
        flex: none;
        width: 100%;
        position: static;
        margin-bottom: 0;
        padding: 15px;
    }
    
    .mypage-menu h3 {
        font-size: 1.1rem;
        margin-bottom: 15px;
    }
    
    .mypage-menu-item {
        padding: 10px 12px;
        font-size: 0.9rem;
    }
    
    .mypage-content {
        padding: 15px;
    }
    
    .chat-container {
        height: 350px;
    }
    
    .chat-message {
        max-width: 85%;
        font-size: 0.9rem;
    }
    
    .api-key-section {
        padding: 15px;
        margin-bottom: 20px;
    }
    
    .api-key-section h4 {
        font-size: 1.1rem;
        margin-bottom: 12px;
    }
    
    .api-key-input {
        font-size: 0.9rem;
        padding: 8px;
    }
    
    .api-key-buttons {
        flex-direction: column;
        gap: 8px;
    }
    
    .video-gallery {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 15px;
    }
}

/* メニュー部分 */
.mypage-menu {
    flex: 0 0 250px;
    background-color: var(--darker-bg);
    border-radius: 10px;
    padding: 20px;
    position: sticky;
    top: 20px;
    height: fit-content;
}

.mypage-menu h3 {
    color: #ffffff;
    margin-top: 0;
    margin-bottom: 20px;
    font-size: 1.2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.mypage-menu ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mypage-menu li {
    margin-bottom: 10px;
}

.mypage-menu-item {
    display: block;
    padding: 12px 15px;
    color: var(--text-light);
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.3s ease;
    background-color: var(--medium-bg);
}

.mypage-menu-item:hover, .mypage-menu-item.active {
    background-color: var(--accent-color);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* 新着バッジスタイル（プロフェッショナル） */
.mypage-menu-item {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.menu-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    padding: 0 6px;
    background: linear-gradient(135deg, #dc2626, #b91c1c);
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 11px;
    box-shadow: 0 2px 8px rgba(220, 38, 38, 0.4);
    animation: subtlePulse 2s ease-in-out infinite;
}

@keyframes subtlePulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 2px 8px rgba(220, 38, 38, 0.4);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 3px 12px rgba(220, 38, 38, 0.6);
    }
}

/* 目立たないメニュー項目 */
.mypage-menu-item.menu-item-dimmed {
    opacity: 0.5;
    color: var(--text-dark);
}

.mypage-menu-item.menu-item-dimmed:hover {
    opacity: 0.7;
}

/* G検定コンテンツ (Dark Mode / Default) */
.g-test-intro {
    background-color: var(--darker-bg);
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}
.g-test-description {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 30px;
}
.g-test-intro h3 {
    color: var(--text-light);
    margin-bottom: 20px;
}
.g-test-start-btn {
    display: inline-block;
    width: auto;
    min-width: 300px;
    padding: 18px 40px;
    font-size: 1.3em;
    text-decoration: none;
    border-radius: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-weight: bold;
    box-shadow: 0 5px 15px rgba(118, 75, 162, 0.4);
    transition: transform 0.2s, box-shadow 0.2s;
}
.g-test-start-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(118, 75, 162, 0.6);
}

/* ========================================
   Light Mode Styles for Mypage
   ======================================== */

body.theme-light {
    background: #f8fafc;
    color: #0f172a;
}

body.theme-light .container {
    background: #ffffff;
}

body.theme-light .mypage-menu {
    background: #ffffff;
    border-right: 1px solid #e2e8f0;
}

body.theme-light .mypage-menu h3 {
    color: #0f172a;
    border-bottom: 2px solid #e2e8f0;
}

body.theme-light .mypage-menu-item {
    color: #1e293b;
    background-color: transparent;
}

body.theme-light .mypage-menu-item:hover {
    background-color: #f1f5f9;
    color: #0f172a;
}

body.theme-light .mypage-menu-item.active {
    background-color: #e0f2fe;
    color: #0369a1;
    border-left: 4px solid #0369a1;
}

body.theme-light .mypage-content {
    background-color: #ffffff;
    color: #0f172a;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

body.theme-light .mypage-inner-content h3 {
    color: #0369a1;
    border-bottom: 2px solid #e2e8f0;
}

body.theme-light .section-header {
    border-bottom: 2px solid #e2e8f0;
}

body.theme-light .section-header h2 {
    color: #0369a1;
}

body.theme-light .section-header h2 i {
    color: #0369a1;
}

/* Video Gallery Light Mode */
body.theme-light .video-card {
    background-color: #ffffff;
    border: 1px solid #e2e8f0;
}

body.theme-light .video-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

body.theme-light .video-title {
    color: #0f172a;
}

body.theme-light .video-description {
    color: #1e293b;
}

body.theme-light .video-stats {
    color: #1e293b;
    border-top: 1px solid #e2e8f0;
}

/* Chat Interface Light Mode */
body.theme-light .chat-container {
    background-color: #ffffff;
    border: 1px solid #e2e8f0;
}

body.theme-light .chat-messages {
    background-color: #f8fafc;
}

body.theme-light .chat-message {
    background-color: #ffffff;
    color: #0f172a;
    border: 1px solid #e2e8f0;
}

body.theme-light .bot-message {
    background-color: #e0f2fe;
    border-color: #bae6fd;
}

body.theme-light .chat-input {
    background-color: #ffffff;
    color: #0f172a;
    border: 1px solid #cbd5e1;
}

body.theme-light .chat-send-btn {
    background: linear-gradient(135deg, #dc2626, #b91c1c);
    color: #ffffff;
}

body.theme-light .chat-send-btn:hover {
    background: linear-gradient(135deg, #b91c1c, #991b1b);
}

/* Settings Panel Light Mode */
body.theme-light .chat-settings-panel {
    background-color: #ffffff;
    border-left: 1px solid #e2e8f0;
}

body.theme-light .api-key-input {
    background-color: #ffffff;
    color: #0f172a;
    border: 1px solid #cbd5e1;
}

body.theme-light .chat-tab {
    color: #1e293b;
    background-color: transparent;
}

body.theme-light .chat-tab:hover {
    background-color: #f1f5f9;
}

body.theme-light .chat-tab.active {
    background-color: #e0f2fe;
    color: #0369a1;
}

/* Coupon Section Light Mode */
body.theme-light #coupon-content .coupon-item {
    background: #ffffff;
    border: 1px solid #e2e8f0;
}

body.theme-light #coupon-content .coupon-item:hover {
    background: #f8fafc;
    box-shadow: 0 8px 25px rgba(15, 23, 42, 0.08);
}

body.theme-light #coupon-content .coupon-item h4 {
    color: #0f172a;
}

body.theme-light #coupon-content .coupon-meta {
    color: #475569;
}

body.theme-light #coupon-content .coupon-body {
    color: #1f2937;
}

body.theme-light #coupon-content .coupon-item-footer {
    border-top: 1px solid #e2e8f0;
}

body.theme-light #coupon-content .coupon-link-btn {
    background: #2563eb;
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

body.theme-light #coupon-content .coupon-link-btn:hover {
    background: #1d4ed8;
    color: #ffffff;
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.3);
}

/* PDF List Light Mode */
body.theme-light .pdf-item {
    background-color: #ffffff;
    border: 1px solid #e2e8f0;
}

body.theme-light .pdf-item:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

body.theme-light .pdf-item .pdf-title {
    color: #0f172a;
}

body.theme-light .pdf-card .pdf-title {
    color: #ffffff;
}

body.theme-light .pdf-description {
    color: #1e293b;
}

/* Modal Light Mode */
body.theme-light .video-modal {
    background-color: rgba(0, 0, 0, 0.8);
}

body.theme-light .modal-content {
    background-color: #ffffff;
    color: #0f172a;
}

/* Theme Toggle Button Light Mode */
body.theme-light .mypage-theme-toggle {
    background: #ffffff;
    border-color: #e2e8f0;
}

body.theme-light .mypage-theme-toggle svg {
    fill: #0f172a;
    stroke: #0f172a;
}

/* AI News Feed Light Mode */
body.theme-light .news-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
}

body.theme-light .news-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

body.theme-light .news-title {
    color: #0f172a;
}

body.theme-light .news-summary {
    color: #1e293b;
}

body.theme-light .news-meta {
    color: #334155;
}

/* AI News Feed (news-item) Light Mode */
body.theme-light #ai-news-feed-content .last-updated-text {
    color: #475569;
}

body.theme-light #ai-news-feed-content .news-item {
    background: #ffffff;
    border: 1px solid #e2e8f0;
}

body.theme-light #ai-news-feed-content .news-item:hover {
    background: #f8fafc;
    box-shadow: 0 8px 25px rgba(15, 23, 42, 0.08);
}

body.theme-light #ai-news-feed-content .news-item-title {
    color: #0f172a;
}

body.theme-light #ai-news-feed-content .news-category {
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    color: #334155;
}

body.theme-light #ai-news-feed-content .news-item-summary {
    color: #1f2937;
}

body.theme-light #ai-news-feed-content .news-item-footer {
    border-top: 1px solid #e2e8f0;
}

body.theme-light #ai-news-feed-content .news-source-link {
    color: #2563eb;
}

body.theme-light #ai-news-feed-content .news-source-link:hover {
    color: #1d4ed8;
}

body.theme-light #ai-news-feed-content .news-loading,
body.theme-light #ai-news-feed-content .news-error,
body.theme-light #ai-news-feed-content .no-news,
body.theme-light #ai-news-feed-content .pagination-ellipsis,
body.theme-light #ai-news-feed-content .pagination-info {
    color: #334155;
}

body.theme-light #ai-news-feed-content .pagination-btn {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    color: #334155;
}

body.theme-light #ai-news-feed-content .pagination-btn:hover {
    background: #f1f5f9;
}

/* Logout Button Light Mode */
body.theme-light .logout-btn {
    background-color: #2563eb;
    color: #ffffff;
}

body.theme-light .logout-btn:hover {
    background-color: #1d4ed8;
}

.logout-btn {
    background-color: var(--accent-color);
    color: #ffffff;
    border: 1px solid transparent;
    padding: 12px 15px;
    text-align: center;
    text-decoration: none;
    display: block;
    font-size: 1rem;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.3s;
    margin-top: 20px;
    width: 100%;
}

.logout-btn:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
}

/* コンテンツ部分 */
.mypage-content {
    flex: 1;
    background-color: var(--medium-bg);
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.mypage-inner-content {
    animation: fadeIn 0.5s ease-in-out;
}

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

.mypage-inner-content h3 {
    color: #ffffff;
    margin-top: 0;
    margin-bottom: 20px;
    font-size: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

/* Section header (desktop) */
.section-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin: 0 0 20px 0;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.section-header h2 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
    color: #ffffff;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.section-header h2 i {
    color: var(--accent-color);
}

.section-header .news-feed-controls {
    margin-top: 0;
    justify-content: flex-end;
    gap: 12px;
}

/* 動画ギャラリー用のスタイル */
.video-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.video-card {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    background-color: var(--darker-bg);
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
}

.video-thumbnail {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%; /* 16:9アスペクト比 */
    overflow: hidden;
    background-color: var(--dark-bg);
}

.video-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0.9;
    transition: opacity 0.3s;
}

.video-card:hover .video-thumbnail img {
    opacity: 1;
}

.video-info {
    padding: 15px;
}

.video-title {
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 10px 0;
    color: var(--text-light);
}

.video-description {
    font-size: 0.85rem;
    color: var(--text-medium);
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.video-duration {
    font-size: 0.8rem;
    color: var(--text-dark);
    display: block;
    margin-bottom: 10px;
}

.video-stats {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-medium);
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--border-color);
}

.video-stats span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.video-stats .icon {
    font-size: 1rem;
    color: var(--accent-color);
}

.like-button-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 15px;
    gap: 10px;
}

.like-button {
    background: none;
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
    padding: 10px 20px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.like-button:hover {
    background-color: var(--accent-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.like-button.liked {
    background-color: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

.like-button .heart-icon {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.like-button.liked .heart-icon {
    transform: scale(1.2);
    color: white; /* Ensure heart is white when liked */
}

.like-count {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-light);
}

.video-play-btn {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 8px 15px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 0.9rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.3s;
    width: 100%;
}

.video-play-btn:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
}

.play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background-color: rgba(0,0,0,0.7);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0.8;
    transition: opacity 0.3s, transform 0.3s;
}

.play-icon::after {
    content: '';
    display: block;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 10px 0 10px 20px;
    border-color: transparent transparent transparent #fff;
    margin-left: 5px;
}

.video-card:hover .play-icon {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.1);
}

/* 動画プレーヤーモーダル */
.video-modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.9);
}

.video-modal-content {
    position: relative;
    margin: 5% auto;
    padding: 0;
    width: 80%;
    max-width: 1000px;
}

.close-video-modal {
    position: absolute;
    top: -40px;
    right: 0;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
    z-index: 1001;
    cursor: pointer;
}

.close-video-modal:hover,
.close-video-modal:focus {
    color: var(--accent-color);
}

.video-container {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 */
    height: 0;
    overflow: hidden;
}

.video-container video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #000;
}

.video-title-bar {
    background-color: var(--darker-bg);
    color: var(--text-light);
    padding: 15px;
    font-size: 1.1rem;
    border-top-left-radius: 6px;
    border-top-right-radius: 6px;
}

/* ページネーション */
.pagination {
    display: flex;
    justify-content: center;
    margin: 25px 0;
}

.pagination-btn {
    margin: 0 5px;
    padding: 10px 15px;
    background-color: var(--darker-bg);
    border: 1px solid var(--border-color);
    color: var(--text-light);
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.pagination-btn:hover {
    background-color: var(--light-bg);
    transform: translateY(-2px);
}

.pagination-btn.active {
    background-color: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

.pagination-btn.disabled {
    color: var(--text-dark);
    cursor: not-allowed;
    background-color: var(--dark-bg);
    transform: none;
}

/* チャットインターフェース */
.chat-container {
    flex-direction: column;
    height: 500px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 20px;
    background-color: var(--darker-bg);
}

/* 表示中のチャットコンテナのみflexにする */
.chat-container:not([style*="display: none"]) {
    display: flex;
}

/* デフォルトは非表示（HTMLのインラインスタイルを尊重） */
.chat-container[style*="display: none"] {
    display: none !important;
}

/* 通常チャット以外は初期状態で非表示 */
.chat-container:not(#normal-chat) {
    display: none;
}

/* 通常チャットのみ初期表示 */
#normal-chat {
    display: flex;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 15px;
    background-color: var(--darker-bg);
}

.chat-input-area {
    display: flex;
    border-top: 1px solid var(--border-color);
    padding: 10px;
    background-color: var(--medium-bg);
}

.chat-input {
    flex: 1;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin-right: 10px;
    background-color: var(--dark-bg);
    color: var(--text-light);
    font-size: 1rem;
}

.chat-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(78, 205, 196, 0.2);
}

.chat-send-btn {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 0 20px;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s;
    font-size: 1rem;
    font-weight: 500;
}

.chat-send-btn:hover {
    background-color: var(--accent-hover);
}

.chat-send-btn:disabled {
    background-color: var(--text-dark);
    cursor: not-allowed;
}

.chat-message {
    margin-bottom: 15px;
    max-width: 80%;
    padding: 12px 15px;
    border-radius: 18px;
    position: relative;
    word-wrap: break-word;
    display: block;
    clear: both;
    color: var(--text-light);
    line-height: 1.5;
}

.user-message {
    background-color: var(--message-user);
    float: right;
    border-bottom-right-radius: 5px;
    text-align: right;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.bot-message {
    background-color: var(--message-bot);
    float: left;
    border-bottom-left-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.message-time {
    font-size: 0.7rem;
    color: var(--text-medium);
    margin-top: 5px;
    text-align: right;
}

/* 通常チャット（独立） */
.chat-default-tab {
    display: flex;
    justify-content: flex-start;
    margin-bottom: 15px;
    padding: 10px;
    background-color: var(--darker-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.chat-default-tab .chat-tab {
    padding: 10px 20px;
    background-color: var(--accent-color);
    color: white;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

/* チャットタブグループ */
.chat-tab-groups {
    display: flex;
    flex-wrap: wrap; /* Allow wrapping for smaller screens */
    gap: 10px; /* Space between groups */
    margin-bottom: 15px;
}

.chat-tab-group {
    background-color: var(--darker-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 15px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1; /* Allow groups to take equal space */
    min-width: 200px; /* Minimum width for groups */
}

.chat-group-title {
    color: var(--accent-color);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 5px;
    padding-bottom: 5px;
    border-bottom: 1px solid var(--border-color);
}

/* チャットタブ */
.chat-tabs {
    display: flex;
    flex-wrap: wrap; /* Allow tabs to wrap within a group */
    gap: 5px; /* Space between tabs */
}

.chat-tab {
    padding: 8px 15px;
    cursor: pointer;
    background-color: var(--dark-bg);
    color: var(--text-medium);
    border-radius: 5px;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    white-space: nowrap; /* Prevent tab text from wrapping */
}

.chat-tab:hover {
    background-color: var(--light-bg);
    color: var(--text-light);
}

.chat-tab.active {
    background-color: var(--accent-color) !important;
    color: white !important;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

/* 非アクティブタブの確実な状態リセット */
.chat-tab:not(.active) {
    background-color: var(--dark-bg);
    color: var(--text-medium);
}

/* メディアクエリ: スマホ対応 */
@media (max-width: 768px) {
    .chat-tab-groups {
        flex-direction: column; /* Stack groups vertically on small screens */
    }
    .chat-tab-group {
        min-width: unset; /* Remove min-width constraint */
        width: 100%; /* Full width on small screens */
    }
    .chat-tab {
        flex-grow: 1; /* Allow tabs to grow and fill space */
        text-align: center;
    }
}

/* APIキー設定 */
.api-key-section {
    margin-bottom: 25px;
    padding: 20px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--darker-bg);
}

.api-key-section h4 {
    color: var(--accent-color);
    margin-top: 0;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.api-key-input {
    width: 100%;
    padding: 12px 15px;
    margin-bottom: 15px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--dark-bg);
    color: var(--text-light);
    font-size: 1rem;
    box-sizing: border-box;
}

.api-key-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(78, 205, 196, 0.2);
}

.api-key-buttons {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.api-key-save-btn {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 12px 15px;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.3s;
    font-size: 1rem;
    font-weight: 500;
    flex: 1;
}

.api-key-save-btn:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
}

.api-key-delete-btn {
    background-color: var(--danger-color);
    color: white;
    border: none;
    padding: 12px 15px;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.3s;
    font-size: 1rem;
    font-weight: 500;
}

.api-key-delete-btn:hover {
    background-color: var(--danger-hover);
    transform: translateY(-2px);
}

.api-key-delete-btn:disabled {
    background-color: var(--text-dark);
    cursor: not-allowed;
    transform: none;
}

#api-key-status {
    margin-top: 15px;
    font-weight: 500;
}

.model-info {
    font-size: 0.9rem;
    color: var(--text-medium);
    margin: 10px 0;
    text-align: center;
    background-color: var(--dark-bg);
    padding: 8px 12px;
    border-radius: 4px;
    display: inline-block;
}

/* クーポン関連スタイル */
#coupon-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}


#coupon-content .coupon-item {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 20px;
    margin: 0;
    transition: all 0.3s ease;
}

/* クーポンカード間の区切り線 */
.coupon-card {
    background-color: var(--darker-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 20px; /* 各クーポンの下にスペースを追加 */
    border-bottom: 1px solid var(--border-color); /* 区切り線 */
    transition: transform 0.3s, box-shadow 0.3s;
}

.coupon-card:last-child {
    margin-bottom: 0; /* 最後のクーポンカードの下にはマージンを入れない */
    border-bottom: none; /* 最後のクーポンカードの下線は不要 */
}

.coupon-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.coupon-card .coupon-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.coupon-card h4 {
    color: var(--accent-color);
    margin: 0;
    font-size: 1.2rem;
}

.coupon-card .coupon-discount {
    background-color: var(--accent-color);
    color: white;
    padding: 5px 10px;
    border-radius: 5px;
    font-weight: bold;
    font-size: 0.9rem;
}

.coupon-card .coupon-description {
    color: var(--text-medium);
    font-size: 0.95rem;
    margin-bottom: 15px;
    line-height: 1.5;
}

.coupon-card .coupon-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px dashed var(--border-color); /* 点線で区切り */
}

.coupon-card .coupon-code {
    color: var(--text-light);
    font-weight: bold;
    font-size: 0.9rem;
}

.coupon-card .coupon-expiry {
    color: var(--text-dark);
    font-size: 0.85rem;
}

#coupon-content .coupon-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

#coupon-content .coupon-item h4 {
    color: #ffffff;
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0 0 10px 0;
}

#coupon-content .coupon-meta {
    color: #a0a0a0;
    font-size: 0.85rem;
    margin: 0 0 10px 0;
}

#coupon-content .coupon-body {
    color: #e2e8f0;
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}

#coupon-content .coupon-item-footer {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

#coupon-content .coupon-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: #1a202c;
    text-decoration: none;
    padding: 10px 16px;
    border-radius: 999px;
    font-size: 0.9rem;
    font-weight: 600;
    border: none;
    box-shadow: 0 4px 12px rgba(79, 172, 254, 0.35);
    transition: all 0.3s ease;
}

#coupon-content .coupon-link-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(79, 172, 254, 0.45);
    color: #1a202c;
}

#coupon-content .coupon-link-btn i {
    font-size: 0.9em;
}

#coupon-content .no-coupons {
    text-align: center;
    padding: 40px 20px;
    color: #a0a0a0;
}

body.theme-light #coupon-content .no-coupons {
    color: #334155;
}

/* クーポンボタンのスタイル */
.coupon-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    color: white;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(78, 205, 196, 0.3);
    border: none; /* ボタンなのでボーダーは不要 */
    cursor: pointer; /* カーソルをポインターに */
}

.coupon-btn:hover {
    background: linear-gradient(135deg, var(--accent-hover), var(--accent-color));
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(78, 205, 196, 0.4);
    color: white;
}

.coupon-btn i {
    font-size: 16px; /* アイコンのサイズ調整 */
}

/* スマートフォン・タブレット対応 */
@media (max-width: 768px) {
    .mypage-menu {
        flex: none;
        width: 100%;
        position: static;
        margin-bottom: 20px;
        padding: 15px;
    }
    
    .mypage-menu h3 {
        font-size: 1.1rem;
        margin-bottom: 15px;
    }
    
    .mypage-menu-item {
        padding: 10px 12px;
        font-size: 0.9rem;
    }

    .video-gallery {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 15px;
    }

    .chat-container {
        height: 350px;
    }

    .chat-message {
        max-width: 85%;
        font-size: 0.9rem;
        padding: 10px 12px;
    }

    .api-key-section,
    .mypage-content {
        padding: 15px;
    }
    
    .api-key-section h4 {
        font-size: 1.1rem;
    }
    
    .api-key-input {
        font-size: 0.9rem;
        padding: 10px;
    }

    .video-modal-content {
        width: 95%;
        margin: 2% auto;
    }

    .api-key-buttons {
        flex-direction: column;
        gap: 8px;
    }
    
    .chat-tab-groups {
        flex-direction: column;
    }
    
    .chat-tab-group {
        min-width: unset;
        width: 100%;
    }
    
    .chat-tab {
        flex-grow: 1;
        text-align: center;
        font-size: 0.85rem;
        padding: 6px 10px;
    }
    
    .video-card {
        border-radius: 6px;
    }
    
    .video-info {
        padding: 12px;
    }
    
    .video-title {
        font-size: 0.95rem;
    }
    
    .pagination-btn {
        padding: 8px 12px;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 8px;
        gap: 10px;
    }
    
    .mypage-menu {
        padding: 12px;
    }
    
    .mypage-menu h3 {
        font-size: 1rem;
        margin-bottom: 12px;
    }
    
    .mypage-menu-item {
        padding: 8px 10px;
        font-size: 0.85rem;
    }
    
    .mypage-content {
        padding: 12px;
    }
    
    .video-gallery {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .chat-container {
        height: 300px;
    }
    
    .chat-message {
        max-width: 90%;
        font-size: 0.85rem;
        padding: 8px 10px;
    }
    
    .chat-input {
        font-size: 0.9rem;
        padding: 10px;
    }
    
    .chat-send-btn {
        font-size: 0.9rem;
        padding: 0 15px;
    }
    
    .api-key-section {
        padding: 12px;
        margin-bottom: 15px;
    }
    
    .api-key-section h4 {
        font-size: 1rem;
        margin-bottom: 10px;
    }
    
    .api-key-input {
        font-size: 0.85rem;
        padding: 8px;
    }
    
    .api-key-save-btn,
    .api-key-delete-btn {
        font-size: 0.85rem;
        padding: 10px;
    }
    
    .video-modal-content {
        width: 98%;
        margin: 1% auto;
    }
    
    .close-video-modal {
        font-size: 30px;
        top: -35px;
    }
    
    .video-title-bar {
        padding: 10px;
        font-size: 1rem;
    }
    
    .chat-tab {
        font-size: 0.8rem;
        padding: 5px 8px;
    }
    
    .pagination-btn {
        padding: 6px 10px;
        font-size: 0.8rem;
        margin: 0 2px;
    }

    .coupon-item {
        padding: 12px;
        margin-bottom: 12px;
    }
    
    .coupon-item h4 {
        font-size: 1rem;
        margin-bottom: 8px;
    }
    
    .coupon-link-btn {
        padding: 6px 12px;
        font-size: 0.85rem;
    }
}

/* ユーティリティクラス */
.clearfix:after {
    content: "";
    display: table;
    clear: both;
}

/* ローディングスピナー */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

.comment-delete-btn {
    background-color: var(--danger-color);
    color: white;
    border: none;
    padding: 5px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
    margin-left: 10px;
    transition: background-color 0.3s;
}
.comment-delete-btn:hover {
    background-color: var(--danger-hover);
}

/* Daily GEN Layout */
.daily-gen-layout {
    display: flex;
    gap: 20px;
    position: relative; /* For positioning the toggle button */
    justify-content: space-between; /* Distribute space between items */
    width: 100%; /* Ensure it takes full width */
}

.daily-gen-layout.panel-closed {
    gap: 0; /* Remove gap when panel is closed */
}

.chat-main-area {
    flex: 1; /* Allow chat area to grow and shrink */
    display: flex;
    flex-direction: column;
    transition: flex-grow 0.3s ease-in-out; /* Smooth transition for width change */
}

/* Chat Settings Panel */
.chat-settings-panel {
    width: 300px; /* Adjust as needed */
    background-color: var(--darker-bg);
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 20px;
    height: fit-content;
    transition: transform 0.3s ease-in-out;
    transform: translateX(0); /* Default visible */
    z-index: 900; /* Ensure it's above other content */
}

.chat-settings-panel.hidden {
    transform: translateX(calc(100% + 20px)); /* Hide off-screen */
}

.settings-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.settings-panel-header h4 {
    color: var(--accent-color);
    margin: 0;
    font-size: 1.2rem;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 1.8rem;
    cursor: pointer;
    transition: color 0.3s;
}

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

/* Settings Toggle Button */
.settings-toggle-btn {
    position: absolute;
    top: 0;
    right: -50px; /* Position outside the panel */
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 1.5rem;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    transition: background-color 0.3s, transform 0.3s;
    z-index: 950; /* Above the panel but below close button */
}

.settings-toggle-btn:hover {
    background-color: var(--accent-hover);
    transform: scale(1.05);
}

/* Adjust chat container height */
.chat-container {
    height: calc(100vh - 300px); /* Adjust based on header/footer and other elements */
    min-height: 400px; /* Minimum height */
}

/* Responsive adjustments for settings panel */
@media (max-width: 1024px) {
    .daily-gen-layout {
        flex-direction: column;
    }

    .chat-settings-panel {
        width: 100%;
        position: static;
        transform: translateX(0); /* Always visible in column layout */
        margin-bottom: 20px;
    }

    .chat-settings-panel.hidden {
        transform: translateX(0); /* No hiding in column layout */
    }

    .settings-toggle-btn {
        display: none; /* Hide toggle button in column layout */
    }
}

/* Progress Bar Styles for Stock Agent */
.progress-bar {
    width: 100%;
    height: 8px;
    background-color: var(--medium-bg);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 8px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), var(--success-color));
    border-radius: 4px;
    transition: width 0.3s ease;
    width: 0%;
}

.progress-text {
    font-size: 12px;
    color: var(--text-medium);
    text-align: center;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-3px); }
    75% { transform: translateX(3px); }
}

/* Stock Agent Specific Styles */
#stock-agent-progress {
    background-color: var(--darker-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
}

/* Enhanced message formatting for investment reports */
.stock-agent-chat .chat-message .message-content {
    line-height: 1.6;
}

.stock-agent-chat .chat-message .message-content strong {
    color: var(--accent-color);
}

.stock-agent-chat .chat-message .message-content em {
    color: var(--text-medium);
    font-style: italic;
}

/* 強化されたアニメーションとスタイル */

/* スピナーアニメーション */
.enhanced-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(78, 205, 196, 0.3);
    border-radius: 50%;
    border-top-color: var(--accent-color);
    animation: enhancedSpin 1s ease-in-out infinite;
    margin-right: 8px;
}

@keyframes enhancedSpin {
    0% { transform: rotate(0deg) scale(1); }
    50% { transform: rotate(180deg) scale(1.1); }
    100% { transform: rotate(360deg) scale(1); }
}

/* 進捗テキストのハイライト */
.highlight {
    color: var(--highlight-color);
    font-weight: bold;
    text-shadow: 0 0 10px rgba(255, 235, 59, 0.3);
}

.success-highlight {
    color: var(--success-green);
    font-weight: bold;
    text-shadow: 0 0 10px rgba(76, 175, 80, 0.3);
}

.stock-highlight {
    color: var(--info-blue);
    font-weight: bold;
    background: linear-gradient(45deg, transparent, rgba(33, 150, 243, 0.1), transparent);
    padding: 2px 4px;
    border-radius: 3px;
}

.code-highlight {
    color: var(--warning-orange);
    font-family: 'Courier New', monospace;
    font-weight: bold;
}

.keyword-highlight {
    color: var(--success-green);
    font-weight: bold;
    background: linear-gradient(45deg, transparent, rgba(76, 175, 80, 0.1), transparent);
    padding: 1px 3px;
    border-radius: 2px;
}

.action-highlight {
    color: var(--accent-color);
    font-weight: bold;
    text-shadow: 0 0 5px rgba(78, 205, 196, 0.3);
}

.step-counter {
    color: var(--text-light);
    background: linear-gradient(45deg, var(--medium-bg), var(--light-bg));
    padding: 2px 6px;
    border-radius: 10px;
    font-size: 0.9em;
    font-weight: bold;
}

/* Removed .sparkle class - no longer used */

/* アニメーション効果 */
@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(10px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes progressPulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.02);
        opacity: 0.8;
    }
}

@keyframes errorPulse {
    0%, 100% {
        color: #ff5252;
        text-shadow: 0 0 5px rgba(255, 82, 82, 0.3);
    }
    50% {
        color: #ff6b6b;
        text-shadow: 0 0 15px rgba(255, 107, 107, 0.5);
    }
}

@keyframes retryPulse {
    0%, 100% {
        color: var(--warning-orange);
        text-shadow: 0 0 5px rgba(255, 152, 0, 0.3);
    }
    50% {
        color: #ffa726;
        text-shadow: 0 0 15px rgba(255, 167, 38, 0.5);
    }
}

@keyframes bounce {
    0%, 20%, 53%, 80%, 100% {
        transform: translate3d(0, 0, 0);
    }
    40%, 43% {
        transform: translate3d(0, -10px, 0);
    }
    70% {
        transform: translate3d(0, -5px, 0);
    }
    90% {
        transform: translate3d(0, -2px, 0);
    }
}

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-3px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(3px);
    }
}

/* Removed old sparkle animation - replaced with subtlePulse for badges */

/* アニメーション付きドット */
.animated-dots {
    display: inline-block;
    animation: dotPulse 1.5s ease-in-out infinite;
}

.dots {
    animation: dotFade 2s ease-in-out infinite;
}

@keyframes dotPulse {
    0%, 100% {
        opacity: 0.4;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.2);
    }
}

@keyframes dotFade {
    0%, 100% {
        opacity: 0.6;
    }
    33% {
        opacity: 1;
    }
    66% {
        opacity: 0.3;
    }
}

/* 分析テキストのアニメーション */
.analysis-text {
    animation: textPulse 2s ease-in-out infinite;
}

@keyframes textPulse {
    0%, 100% {
        opacity: 0.8;
    }
    50% {
        opacity: 1;
        transform: scale(1.02);
    }
}

/* SDI進捗表示 */
.sdi-progress-container {
    background-color: var(--medium-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
    margin: 10px 0;
}

.sdi-progress-title {
    font-size: 1.1rem;
    font-weight: bold;
    margin-bottom: 15px;
    color: var(--accent-color);
    text-align: center;
}

.sdi-progress-text {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 15px;
}

.sdi-step {
    padding: 8px 12px;
    background-color: var(--dark-bg);
    border-radius: 5px;
    border-left: 3px solid var(--border-color);
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

.sdi-step:nth-child(odd) {
    background-color: var(--darker-bg);
}

.sdi-note {
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-dark);
    font-style: italic;
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--border-color);
}

/* SDIログエリア */
.sdi-log-area {
    max-height: 300px;
    overflow-y: auto;
    background-color: var(--darker-bg);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    padding: 10px;
    margin: 10px 0;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.4;
}

.sdi-log-entry {
    padding: 2px 0;
    color: var(--text-light);
    word-wrap: break-word;
    white-space: pre-wrap;
}

.sdi-log-entry:last-child {
    animation: newLogEntry 0.3s ease-in;
}

@keyframes newLogEntry {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ログエリアのスクロールバー */
.sdi-log-area::-webkit-scrollbar {
    width: 6px;
}

.sdi-log-area::-webkit-scrollbar-track {
    background: var(--dark-bg);
}

.sdi-log-area::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.sdi-log-area::-webkit-scrollbar-thumb:hover {
    background: var(--text-dark);
}

/* Stock Backtest Specific Styles */
.backtest-options {
    margin-bottom: 20px;
    display: flex;
    gap: 20px;
    align-items: center;
}

.backtest-options label {
    display: flex;
    align-items: center;
    cursor: pointer;
    color: var(--text-light);
    font-size: 1rem;
}

.backtest-options input[type="radio"] {
    margin-right: 8px;
    accent-color: var(--accent-color); /* Highlight radio button */
}

.backtest-input-area {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.backtest-input-area input[type="text"] {
    flex: 1;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--dark-bg);
    color: var(--text-light);
    font-size: 1rem;
}

.backtest-input-area input[type="text"]:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(78, 205, 196, 0.2);
}

.backtest-input-area button {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.3s;
    font-size: 1rem;
    font-weight: 500;
}

.backtest-input-area button:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
}

.backtest-input-area button:disabled {
    background-color: var(--text-dark);
    cursor: not-allowed;
    transform: none;
}

.backtest-results {
    background-color: var(--darker-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    min-height: 100px;
    color: var(--text-light);
    line-height: 1.6;
}

.backtest-results h4 {
    color: var(--accent-color);
    margin-top: 0;
    margin-bottom: 15px;
    font-size: 1.3rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.backtest-results p {
    margin-bottom: 10px;
}

.backtest-results table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

.backtest-results th, .backtest-results td {
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    text-align: left;
}

.backtest-results th {
    background-color: var(--medium-bg);
    color: var(--accent-color);
    font-weight: bold;
}

.backtest-results tr:nth-child(even) {
    background-color: var(--dark-bg);
}

.backtest-results tr:hover {
    background-color: var(--light-bg);
}

/* PDF関連のスタイル */
.pdf-section {
    margin-top: 20px;
}

.pdf-description {
    color: var(--text-medium);
    font-size: 14px;
    margin-bottom: 20px;
    line-height: 1.5;
}

.pdf-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.pdf-card {
    background: linear-gradient(135deg, var(--medium-bg), var(--dark-bg));
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.pdf-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(78, 205, 196, 0.2);
    border-color: var(--accent-color);
}

.pdf-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-color), var(--success-color));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.pdf-card:hover::before {
    opacity: 1;
}

.pdf-icon {
    display: flex;
    justify-content: center;
    margin-bottom: 15px;
}

.pdf-icon svg {
    width: 48px;
    height: 48px;
    color: #dc3545;
    filter: drop-shadow(0 2px 4px rgba(220, 53, 69, 0.3));
    transition: transform 0.3s ease;
}

.pdf-card:hover .pdf-icon svg {
    transform: scale(1.1);
}

.pdf-info {
    text-align: center;
    margin-bottom: 20px;
}

.pdf-title {
    color: var(--text-light);
    font-size: 16px;
    font-weight: 600;
    margin: 0 0 8px 0;
    line-height: 1.4;
    word-break: break-word;
}

.pdf-size {
    color: var(--text-medium);
    font-size: 12px;
    margin: 4px 0;
    opacity: 0.8;
}

.pdf-date {
    color: var(--text-dark);
    font-size: 11px;
    margin: 4px 0 0 0;
    opacity: 0.7;
}

.pdf-actions {
    display: flex;
    justify-content: center;
}

.pdf-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    color: white;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(78, 205, 196, 0.3);
}

.pdf-download-btn:hover {
    background: linear-gradient(135deg, var(--accent-hover), var(--accent-color));
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(78, 205, 196, 0.4);
    color: white;
}

.pdf-download-btn svg {
    width: 16px;
    height: 16px;
}

.pdf-empty {
    text-align: center;
    color: var(--text-medium);
    padding: 40px 20px;
    background-color: var(--medium-bg);
    border-radius: 8px;
    font-style: italic;
}

/* 管理画面のPDFアップロード用スタイル */
.pdf-upload-area {
    transition: all 0.3s ease;
    cursor: pointer;
}

.pdf-upload-area:hover {
    background-color: #f0f9ff !important;
    border-color: #007bff !important;
}

#upload-progress {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 15px;
}

.progress-bar {
    background-color: #e9ecef;
    border-radius: 10px;
    overflow: hidden;
    height: 8px;
}

#progress-bar {
    background: linear-gradient(90deg, #007bff, #28a745);
    height: 100%;
    transition: width 0.3s ease;
    border-radius: 10px;
}

.coupon-highlight-card {
    background: linear-gradient(135deg, #0f172a, #1f2937);
    color: #f8fafc;
    border-radius: 20px;
    padding: 22px;
    margin-bottom: 24px;
    box-shadow: 0 20px 45px rgba(15, 23, 42, 0.25);
    display: flex;
    flex-direction: column;
    gap: 16px;
    position: relative;
    overflow: hidden;
}

/* Removed .coupon-highlight-card.sparkle - no longer used */

.coupon-highlight-card::after {
    content: '';
    position: absolute;
    inset: -40% 10% auto;
    height: 140%;
    background: radial-gradient(circle at top, rgba(56, 189, 248, 0.25), transparent 65%);
    opacity: 0.6;
}

.coupon-highlight-card__head,
.coupon-highlight-card__body,
.coupon-highlight-card__cta,
.coupon-highlight-card__note {
    position: relative;
    z-index: 1;
}

.coupon-highlight-card__badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 9999px;
    background: rgba(56, 189, 248, 0.2);
    color: #bae6fd;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.coupon-highlight-card__title {
    margin: 0;
    font-size: 1.1rem;
    line-height: 1.5;
}

.coupon-highlight-card__deadline {
    margin: 0;
    font-size: 0.95rem;
    color: rgba(226, 232, 240, 0.8);
}

.coupon-highlight-card__body {
    font-size: 0.95rem;
    line-height: 1.8;
}

.coupon-highlight-card__cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    border-radius: 9999px;
    background: linear-gradient(135deg, #38bdf8, #2563eb);
    color: #f8fafc;
    font-weight: 600;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.coupon-highlight-card__cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(59, 130, 246, 0.35);
}

.coupon-highlight-card__note {
    font-size: 0.8rem;
    color: rgba(226, 232, 240, 0.75);
    line-height: 1.6;
    margin: 0;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .pdf-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .pdf-card {
        padding: 15px;
    }
    
    .pdf-icon svg {
        width: 40px;
        height: 40px;
    }

    .coupon-highlight-card {
        padding: 18px;
        border-radius: 16px;
    }
    
    .coupon-highlight-card__title {
        font-size: 1.05rem;
    }
}

@media (max-width: 480px) {
    .pdf-card {
        padding: 12px;
    }
    
    .pdf-title {
        font-size: 14px;
    }
    
    .pdf-download-btn {
        padding: 8px 16px;
        font-size: 13px;
    }

    .coupon-highlight-card {
        padding: 16px;
    }

    .coupon-highlight-card__body {
        font-size: 0.9rem;
    }
}

/* G検定コンテンツ (Light Mode) */
body.theme-light .g-test-intro {
    background-color: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
}
body.theme-light .g-test-intro h3,
body.theme-light .g-test-description {
    color: #0f172a;
}