/* HaiChat v2.0 リリース記事専用スタイル - HAI-Systemデザインシステム準拠 */

/* 記事ヘッダー */
.article-header {
    background: var(--gradient-primary);
    color: var(--haichat-white);
    padding: 60px 0;
    position: relative;
    overflow: hidden;
    border-bottom: 2px solid var(--haichat-blue);
}

.article-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-secondary);
    opacity: 0.1;
    animation: gradientShift 10s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% { opacity: 0.1; }
    50% { opacity: 0.2; }
}

.article-header .container {
    position: relative;
    z-index: 2;
}

.breadcrumb {
    margin-bottom: 20px;
    font-size: 14px;
    opacity: 0.9;
}

.breadcrumb a {
    color: var(--haichat-dark-200);
    text-decoration: none;
    transition: var(--transition-normal);
}

.breadcrumb a:hover {
    color: var(--haichat-blue);
    text-shadow: 0 0 10px var(--haichat-blue);
}

.breadcrumb .current {
    color: var(--haichat-dark-300);
}

.article-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.article-date, .article-category {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--haichat-dark-800);
    border: 1px solid var(--haichat-blue);
    padding: 8px 16px;
    border-radius: var(--border-radius-lg);
    font-size: 14px;
    box-shadow: var(--shadow-glow);
}

.article-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px var(--haichat-blue);
}

.article-subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 30px;
    line-height: 1.6;
}

.article-stats {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--haichat-dark-800);
    border: 1px solid var(--haichat-purple);
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 14px;
    box-shadow: var(--shadow-glow-purple);
}

/* 記事コンテンツ */
.article-content {
    padding: 60px 0;
    background: var(--gradient-primary);
}

.content-wrapper {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
    align-items: start;
}

.main-content {
    background: var(--haichat-dark-800);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--haichat-blue);
}

.article-image {
    position: relative;
    margin-bottom: 40px;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--haichat-blue);
}

.article-image img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.article-image:hover img {
    transform: scale(1.05);
}

.image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--gradient-dark);
    color: var(--haichat-white);
    padding: 30px;
    transform: translateY(100%);
    transition: var(--transition-normal);
}

.article-image:hover .image-overlay {
    transform: translateY(0);
}

.overlay-content h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    font-weight: 600;
}

.overlay-content p {
    font-size: 1rem;
    opacity: 0.9;
}

/* 目次 */
.toc {
    background: var(--haichat-dark-700);
    border-radius: var(--border-radius-lg);
    padding: 25px;
    margin-bottom: 40px;
    border-left: 4px solid var(--haichat-blue);
    box-shadow: var(--shadow-glow);
}

.toc h3 {
    color: var(--haichat-blue);
    margin-bottom: 15px;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

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

.toc li {
    margin-bottom: 8px;
}

.toc a {
    color: var(--haichat-dark-200);
    text-decoration: none;
    padding: 8px 12px;
    border-radius: var(--border-radius-md);
    display: block;
    transition: var(--transition-normal);
}

.toc a:hover {
    background: var(--haichat-blue);
    color: var(--haichat-white);
    transform: translateX(5px);
    box-shadow: var(--shadow-glow);
}

/* 機能セクション */
.feature-section {
    margin-bottom: 50px;
    padding: 30px;
    background: var(--haichat-dark-700);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--haichat-blue);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-glow);
}

.feature-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-secondary);
}

.feature-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.feature-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-secondary);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--haichat-white);
    font-size: 1.2rem;
    box-shadow: var(--shadow-glow);
}

.feature-header h3 {
    color: var(--haichat-white);
    font-size: 1.5rem;
    margin: 0;
}

.feature-list {
    display: grid;
    gap: 20px;
    margin-top: 20px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 20px;
    background: var(--haichat-dark-800);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    border: 1px solid var(--haichat-blue);
}

.feature-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
    border-color: var(--haichat-purple);
}

.feature-item-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-secondary);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--haichat-white);
    font-size: 1rem;
    flex-shrink: 0;
    box-shadow: var(--shadow-glow);
}

.feature-item-content h4 {
    color: var(--haichat-white);
    font-size: 1.1rem;
    margin: 0 0 8px 0;
    font-weight: 600;
}

.feature-item-content p {
    color: var(--haichat-dark-200);
    margin: 0;
    line-height: 1.5;
}

/* ハイライトボックス */
.highlight-box {
    background: var(--gradient-secondary);
    color: var(--haichat-white);
    border-radius: var(--border-radius-lg);
    padding: 30px;
    margin: 40px 0;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-glow);
}

.highlight-box::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.highlight-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 25px;
    position: relative;
    z-index: 2;
}

.highlight-header i {
    font-size: 1.5rem;
    color: #ffd700;
}

.highlight-header h4 {
    font-size: 1.3rem;
    margin: 0;
    font-weight: 600;
}

.highlight-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    position: relative;
    z-index: 2;
}

.highlight-item {
    background: var(--haichat-dark-800);
    padding: 20px;
    border-radius: var(--border-radius-lg);
    text-align: center;
    border: 1px solid var(--haichat-blue);
    transition: var(--transition-normal);
    box-shadow: var(--shadow-glow);
}

.highlight-item:hover {
    transform: translateY(-5px);
    background: var(--haichat-dark-700);
    border-color: var(--haichat-purple);
    box-shadow: var(--shadow-glow-purple);
}

.highlight-icon {
    width: 50px;
    height: 50px;
    background: var(--haichat-dark-800);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    font-size: 1.2rem;
    border: 1px solid var(--haichat-blue);
    box-shadow: var(--shadow-glow);
}

.highlight-item h5 {
    font-size: 1.1rem;
    margin: 0 0 10px 0;
    font-weight: 600;
}

.highlight-item p {
    font-size: 0.9rem;
    margin: 0;
    opacity: 0.9;
}

/* 技術的改善点 */
.tech-improvements {
    display: grid;
    gap: 30px;
    margin: 40px 0;
}

.tech-item {
    display: flex;
    gap: 20px;
    padding: 30px;
    background: var(--haichat-dark-800);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--haichat-blue);
    transition: var(--transition-normal);
}

.tech-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
    border-color: var(--haichat-purple);
}

.tech-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-secondary);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--haichat-white);
    font-size: 1.5rem;
    flex-shrink: 0;
    box-shadow: var(--shadow-glow);
}

.tech-content h3 {
    color: var(--haichat-white);
    font-size: 1.3rem;
    margin: 0 0 15px 0;
    font-weight: 600;
}

.tech-content p {
    color: var(--haichat-dark-200);
    line-height: 1.6;
    margin-bottom: 20px;
}

.progress-bar {
    background: var(--haichat-dark-600);
    border-radius: 10px;
    height: 8px;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--haichat-blue);
}

.progress-fill {
    background: var(--gradient-secondary);
    height: 100%;
    border-radius: 10px;
    transition: width 1s ease;
    position: relative;
    box-shadow: var(--shadow-glow);
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.progress-text {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--haichat-blue);
}

.security-features {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.security-badge {
    background: var(--gradient-accent);
    color: var(--haichat-white);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 5px;
    font-weight: 500;
    box-shadow: var(--shadow-glow);
}

/* 今後の展望 */
.future-section {
    background: var(--haichat-dark-700);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    margin: 40px 0;
    border: 1px solid var(--haichat-blue);
    box-shadow: var(--shadow-glow);
}

.future-content p {
    color: var(--haichat-dark-200);
    line-height: 1.7;
    margin-bottom: 30px;
    font-size: 1.1rem;
}

.roadmap {
    background: var(--haichat-dark-800);
    border-radius: var(--border-radius-lg);
    padding: 25px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--haichat-blue);
}

.roadmap h4 {
    color: var(--haichat-white);
    font-size: 1.2rem;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.roadmap-items {
    display: grid;
    gap: 20px;
}

.roadmap-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 20px;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.roadmap-item.completed {
    background: var(--gradient-accent);
    color: var(--haichat-white);
    border: 1px solid var(--haichat-green);
    box-shadow: var(--shadow-glow);
}

.roadmap-item.upcoming {
    background: var(--haichat-dark-700);
    border: 2px dashed var(--haichat-blue);
    color: var(--haichat-dark-200);
}

.roadmap-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 5px;
}

.roadmap-item.completed .roadmap-dot {
    background: var(--haichat-white);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
}

.roadmap-item.upcoming .roadmap-dot {
    background: var(--haichat-blue);
}

.roadmap-content h5 {
    font-size: 1.1rem;
    margin: 0 0 5px 0;
    font-weight: 600;
}

.roadmap-content p {
    margin: 0;
    font-size: 0.9rem;
    opacity: 0.8;
}

/* CTAセクション */
.cta-section {
    background: var(--gradient-secondary);
    color: var(--haichat-white);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    margin: 50px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-glow);
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

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

.cta-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    color: #ffd700;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

.cta-content h3 {
    font-size: 2rem;
    margin-bottom: 15px;
    font-weight: 700;
}

.cta-content p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.cta-buttons .btn {
    padding: 15px 30px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
    font-size: 1rem;
}

.cta-buttons .btn-primary {
    background: var(--haichat-white);
    color: var(--haichat-blue);
    box-shadow: var(--shadow-lg);
}

.cta-buttons .btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.cta-buttons .btn-secondary {
    background: var(--haichat-dark-800);
    color: var(--haichat-white);
    border: 2px solid var(--haichat-blue);
    box-shadow: var(--shadow-glow);
}

.cta-buttons .btn-secondary:hover {
    background: var(--haichat-dark-700);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow-purple);
}

.cta-features {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    position: relative;
    z-index: 2;
}

.cta-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--haichat-dark-800);
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 0.9rem;
    border: 1px solid var(--haichat-blue);
    box-shadow: var(--shadow-glow);
}

.cta-feature i {
    color: var(--haichat-green);
}

/* サイドバー */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.sidebar-section {
    background: var(--haichat-dark-800);
    border-radius: var(--border-radius-lg);
    padding: 25px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--haichat-blue);
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    color: var(--haichat-blue);
}

.sidebar-header i {
    font-size: 1.2rem;
}

.sidebar-header h3 {
    font-size: 1.1rem;
    margin: 0;
    font-weight: 600;
}

.service-links {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.service-link {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: var(--haichat-dark-700);
    border-radius: var(--border-radius-lg);
    text-decoration: none;
    color: var(--haichat-dark-200);
    transition: var(--transition-normal);
    border: 1px solid var(--haichat-blue);
}

.service-link:hover {
    background: var(--gradient-secondary);
    color: var(--haichat-white);
    transform: translateX(5px);
    box-shadow: var(--shadow-glow);
}

.service-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-secondary);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--haichat-white);
    font-size: 1rem;
    flex-shrink: 0;
    box-shadow: var(--shadow-glow);
}

.service-content h4 {
    font-size: 1rem;
    margin: 0 0 5px 0;
    font-weight: 600;
    color: var(--haichat-white);
}

.service-content p {
    font-size: 0.8rem;
    margin: 0;
    opacity: 0.8;
    color: var(--haichat-dark-200);
}

.share-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.share-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-radius: var(--border-radius-md);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-normal);
}

.share-btn.twitter {
    background: #1da1f2;
    color: var(--haichat-white);
}

.share-btn.facebook {
    background: #4267b2;
    color: var(--haichat-white);
}

.share-btn.linkedin {
    background: #0077b5;
    color: var(--haichat-white);
}

.share-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.related-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.related-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--haichat-dark-700);
    border-radius: var(--border-radius-md);
    text-decoration: none;
    color: var(--haichat-dark-200);
    transition: var(--transition-normal);
    border: 1px solid var(--haichat-blue);
}

.related-link:hover {
    background: var(--haichat-blue);
    color: var(--haichat-white);
    transform: translateX(5px);
    box-shadow: var(--shadow-glow);
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .content-wrapper {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .article-title {
        font-size: 2rem;
    }
    
    .article-stats {
        flex-direction: column;
        gap: 15px;
    }
    
    .feature-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .tech-item {
        flex-direction: column;
        text-align: center;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-features {
        flex-direction: column;
        gap: 15px;
    }
    
    .highlight-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: 20px;
    }
    
    .article-header {
        padding: 40px 0;
    }
    
    .article-title {
        font-size: 1.5rem;
    }
    
    .sidebar {
        order: -1;
    }
}