/* 機能ページ専用スタイル */

/* 画像アイコンスタイル */
.feature-image-icon {
    width: 60px;
    height: 60px;
    object-fit: contain;
    border-radius: 50%;
    background: var(--gradient-primary);
    padding: 10px;
    transition: var(--transition-normal);
}

.feature-image-icon:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

/* アニメーション */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.feature-card,
.feature-detail,
.use-case-card,
.spec-item {
    opacity: 0;
    transform: translateY(30px);
}

.animate-in {
    animation: fadeInUp 0.6s ease-out forwards;
}

.search-highlight {
    animation: pulse 0.5s ease-in-out;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

/* 機能一覧セクション */
.features-overview {
    padding: var(--spacing-xl) 0;
    background: var(--haichat-dark-gray);
}

.features-overview h2 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--haichat-white);
    font-size: 2.5rem;
    font-weight: 700;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.feature-card {
    background: var(--haichat-black);
    border: 1px solid #333;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--haichat-blue), var(--haichat-purple));
    transform: scaleX(0);
    transition: var(--transition-normal);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.2);
    border-color: var(--haichat-blue);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.feature-content h3 {
    color: var(--haichat-white);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.feature-content p {
    color: var(--haichat-white);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

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

.feature-list li {
    color: var(--haichat-white);
    padding: var(--spacing-xs) 0;
    position: relative;
    padding-left: var(--spacing-md);
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--haichat-blue);
    font-weight: bold;
}

/* 詳細機能セクション */
.detailed-features {
    padding: var(--spacing-xl) 0;
    background: var(--haichat-black);
}

.detailed-features h2 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--haichat-white);
    font-size: 2.5rem;
    font-weight: 700;
}

.feature-detail {
    margin-bottom: var(--spacing-xl);
    background: var(--haichat-dark-gray);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    border: 1px solid #333;
}

.feature-detail-content h3 {
    color: var(--haichat-white);
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.feature-specs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.spec-item {
    background: var(--haichat-black);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    border: 1px solid #333;
    transition: var(--transition-normal);
}

.spec-item:hover {
    border-color: var(--haichat-blue);
    transform: translateY(-2px);
}

.spec-item h4 {
    color: var(--haichat-blue);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.spec-item p {
    color: var(--haichat-white);
    line-height: 1.6;
}

/* 導入事例セクション */
.use-cases {
    padding: var(--spacing-xl) 0;
    background: var(--haichat-dark-gray);
}

.use-cases h2 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--haichat-white);
    font-size: 2.5rem;
    font-weight: 700;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.use-case-card {
    background: var(--haichat-black);
    border: 1px solid #333;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.use-case-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--haichat-purple), var(--haichat-blue));
    transform: scaleX(0);
    transition: var(--transition-normal);
}

.use-case-card:hover::before {
    transform: scaleX(1);
}

.use-case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(147, 51, 234, 0.2);
    border-color: var(--haichat-purple);
}

.use-case-card h3 {
    color: var(--haichat-white);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.use-case-card p {
    color: var(--haichat-white);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.use-case-stats {
    display: flex;
    justify-content: space-around;
    margin-top: var(--spacing-md);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    color: var(--haichat-blue);
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
}

.stat-label {
    display: block;
    color: var(--haichat-white);
    font-size: 0.9rem;
    margin-top: var(--spacing-xs);
}

/* CTAセクション */
.cta-section {
    padding: var(--spacing-xl) 0;
    background: var(--haichat-black);
}

.cta-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    color: var(--haichat-white);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    color: var(--haichat-white);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-normal);
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--haichat-blue);
    color: var(--haichat-white);
}

.btn-primary:hover {
    background: var(--haichat-dark-blue);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--haichat-white);
    border-color: var(--haichat-white);
}

.btn-secondary:hover {
    background: var(--haichat-white);
    color: var(--haichat-black);
    transform: translateY(-2px);
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .feature-specs {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .use-cases-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .use-case-stats {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .features-overview h2,
    .detailed-features h2,
    .use-cases h2,
    .cta-content h2 {
        font-size: 2rem;
    }
    
    .feature-detail-content h3 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .feature-card,
    .feature-detail,
    .use-case-card {
        padding: var(--spacing-md);
    }
    
    .feature-icon {
        font-size: 2.5rem;
    }
    
    .features-overview h2,
    .detailed-features h2,
    .use-cases h2,
    .cta-content h2 {
        font-size: 1.8rem;
    }
    
    .feature-detail-content h3 {
        font-size: 1.3rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
}