/* 個人向けページ専用スタイル */

/* ヒーローセクション */
.hero {
    background: var(--haichat-dark-gray);
    padding: var(--spacing-xxl) 0;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.hero h1 {
    color: var(--haichat-white);
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.hero h2 {
    color: var(--haichat-purple);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.hero p {
    color: var(--haichat-white);
    font-size: 1.2rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

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

/* 主要機能セクション */
.features {
    padding: var(--spacing-xxl) 0;
    background: var(--haichat-black);
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    padding: var(--spacing-lg);
    max-width: 1440px;
    margin: 0 auto;
}

.feature-card {
    background: linear-gradient(165deg, var(--haichat-dark-gray) 0%, rgba(0, 0, 0, 0.7) 100%);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xl) var(--spacing-md);
    transition: var(--transition-normal);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    min-height: 520px;
    display: flex;
    flex-direction: column;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--haichat-purple);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.feature-image {
    width: 100%;
    height: 300px;
    margin: 0 auto var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    background: linear-gradient(145deg, rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.1));
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    flex: 1;
    min-height: 300px;
}

.feature-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0));
    pointer-events: none;
}

.feature-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: var(--transition-normal);
    padding: 0.5rem;
    background: rgba(0, 0, 0, 0.2);
}

.feature-card:hover .feature-image {
    border-color: var(--haichat-purple);
}

.feature-card:hover .feature-image img {
    transform: scale(1.05);
    background: rgba(0, 0, 0, 0.3);
}

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

.feature-card p {
    color: var(--haichat-white);
    margin-bottom: var(--spacing-md);
}

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

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

.feature-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--haichat-purple);
}

/* 活用シーンセクション */
.use-cases {
    padding: var(--spacing-xxl) 0;
    background: var(--haichat-dark-gray);
}

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

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: var(--spacing-xl);
    padding: var(--spacing-lg);
    max-width: 1440px;
    margin: 0 auto;
}

.use-case-card {
    background: linear-gradient(165deg, var(--haichat-black) 0%, rgba(0, 0, 0, 0.8) 100%);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xl) var(--spacing-md);
    transition: var(--transition-normal);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    min-height: 600px;
    display: flex;
    flex-direction: column;
}

.use-case-card:hover {
    transform: translateY(-5px);
    border-color: var(--haichat-purple);
}

.use-case-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.use-case-image {
    width: 100%;
    height: 400px;
    margin: 0 auto var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    background: linear-gradient(145deg, rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.1));
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    flex: 1;
    min-height: 400px;
    padding: var(--spacing-md);
}

.use-case-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0));
    pointer-events: none;
}

.use-case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
    border-radius: var(--border-radius-md);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

/* 画像読み込みエラー時のスタイル */
.use-case-image img.image-load-error {
    object-fit: contain;
    padding: 2rem;
    background: linear-gradient(45deg, var(--haichat-dark-gray) 25%, var(--haichat-black) 25%, var(--haichat-black) 50%, var(--haichat-dark-gray) 50%, var(--haichat-dark-gray) 75%, var(--haichat-black) 75%);
    background-size: 20px 20px;
}

/* 画像読み込み中のスタイル */
.use-case-image img:not([src]), 
.use-case-image img[src=""] {
    opacity: 0;
}

/* 画像表示の基本スタイル */
.use-case-image {
    position: relative;
    background: var(--haichat-dark-gray);
    overflow: hidden;
}

.use-case-image img {
    opacity: 1;
    visibility: visible;
    transition: transform 0.3s ease;
}

.use-case-card:hover .use-case-image {
    border-color: var(--haichat-purple);
}

.use-case-card:hover .use-case-image img {
    transform: scale(1.05) translateY(-5px);
    background: rgba(0, 0, 0, 0.25);
    filter: drop-shadow(0 8px 16px rgba(0, 115, 255, 0.15));
}

.use-case-card h3 {
    color: var(--haichat-white);
    font-size: 1.3rem;
    margin-bottom: var(--spacing-md);
}

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

.use-case-content ul {
    list-style: none;
    padding: 0;
    margin-bottom: var(--spacing-md);
}

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

.use-case-content li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--haichat-purple);
}

.use-case-stats {
    display: flex;
    justify-content: space-around;
    border-top: 1px solid #333;
    padding-top: var(--spacing-md);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    color: var(--haichat-purple);
    font-size: 1.8rem;
    font-weight: 700;
}

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

/* 利用者の声セクション */
.testimonials {
    padding: var(--spacing-xxl) 0;
    background: var(--haichat-black);
}

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

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

.testimonial-card {
    background: var(--haichat-dark-gray);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    transition: var(--transition-normal);
    border: 1px solid #333;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    border-color: var(--haichat-purple);
}

.testimonial-content {
    margin-bottom: var(--spacing-md);
}

.testimonial-content p {
    color: var(--haichat-white);
    line-height: 1.6;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.author-info h4 {
    color: var(--haichat-white);
    margin-bottom: var(--spacing-xs);
}

.author-info p {
    color: var(--haichat-white);
    font-size: 0.9rem;
}


/* よくある質問セクション */
.faq {
    padding: var(--spacing-xxl) 0;
    background: var(--haichat-black);
}

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

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-lg);
}

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

.faq-item:hover {
    border-color: var(--haichat-purple);
}

.faq-item h3 {
    color: var(--haichat-white);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
}

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


/* レスポンシブデザイン */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }



    .faq-grid {
        grid-template-columns: 1fr;
    }
}

/* レスポンシブ対応の改善 */
@media (max-width: 768px) {
    .use-cases-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        padding: var(--spacing-md);
    }

    .use-case-image {
        height: 300px;
        min-height: 300px;
    }

    .use-case-image img {
        object-fit: cover;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .features h2,
    .use-cases h2,
    .testimonials h2,
    .faq h2 {
        font-size: 2rem;
    }

    .features-grid,
    .use-cases-grid {
        padding: var(--spacing-md);
    }

    .feature-card,
    .use-case-card {
        padding: var(--spacing-lg) var(--spacing-md);
        min-height: auto;
        background: linear-gradient(165deg, var(--haichat-dark-gray) 0%, rgba(0, 0, 0, 0.85) 100%);
    }

    .feature-image {
        width: 100%;
        height: 240px;
        min-height: 240px;
        margin-bottom: var(--spacing-md);
    }

    .use-case-image {
        width: 100%;
        height: 320px;
        min-height: 320px;
        margin-bottom: var(--spacing-md);
        padding: var(--spacing-sm);
    }

    .use-case-image img {
        padding: 0.75rem;
    }
}
}