/* ソリューションページ専用スタイル */

/* 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);
    }
}

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

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

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

/* 初期状態 */
.solution-card,
.solution-detail,
.case-study-card,
.comparison-row {
    opacity: 0;
    transform: translateY(30px);
}

/* ソリューション一覧セクション */
.solutions-overview {
    padding: var(--spacing-xl) 0;
    background: var(--haichat-dark-gray);
}

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

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

.solution-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;
}

.solution-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);
}

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

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

.solution-header {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.solution-icon {
    font-size: 2.5rem;
    margin-right: var(--spacing-md);
}

.solution-header h3 {
    color: var(--haichat-white);
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
}

.solution-image {
    width: 100%;
    height: 360px;
    margin-bottom: var(--spacing-md);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    position: relative;
    background: var(--haichat-black);
    border: 1px solid #333;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    will-change: transform, border-color, box-shadow;
}

.solution-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: linear-gradient(135deg,
        rgba(0, 0, 0, 0.2) 0%,
        rgba(0, 0, 0, 0.3) 50%,
        rgba(0, 0, 0, 0.4) 100%
    );
    z-index: 2;
    transition: var(--transition-normal);
}

.solution-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 240px;
    background: linear-gradient(to top, 
        rgba(0, 0, 0, 0.95) 0%,
        rgba(0, 0, 0, 0.8) 25%,
        rgba(0, 0, 0, 0.4) 50%,
        transparent 100%
    );
    z-index: 2;
}

.solution-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease, filter 0.6s ease;
    filter: saturate(1.1) contrast(1.1);
}

.solution-card:hover .solution-image img {
    transform: scale(1.05);
    filter: saturate(1.2) contrast(1.15);
}

.solution-card:hover .solution-image::before {
    background: linear-gradient(135deg,
        rgba(0, 0, 0, 0.1) 0%,
        rgba(0, 0, 0, 0.2) 50%,
        rgba(0, 0, 0, 0.3) 100%
    );
}

.solution-image-overlay {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    z-index: 2;
}

.solution-tag {
    background: var(--haichat-blue);
    color: var(--haichat-white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    letter-spacing: 0.02em;
}

.solution-image-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-lg);
    z-index: 3;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transform: translateY(0);
    transition: transform 0.3s ease;
    will-change: transform;
    backface-visibility: hidden;
    -webkit-font-smoothing: antialiased;
}

.solution-image-icon {
    width: 56px;
    height: 56px;
    background: var(--haichat-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
    border: 2px solid rgba(255, 255, 255, 0.1);
}

.solution-image-icon i {
    font-size: 1.6rem;
    color: var(--haichat-white);
    transition: transform 0.4s ease;
}

.solution-image-text h4 {
    color: var(--haichat-white);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    transition: transform 0.4s ease;
}

.solution-image-text p {
    color: var(--haichat-white);
    font-size: 0.95rem;
    opacity: 0.95;
    margin: 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    transition: opacity 0.4s ease;
}

.solution-card:hover .solution-image-content {
    transform: translateY(-4px);
}

.solution-card:hover .solution-image-icon {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.solution-card:hover .solution-image-icon i {
    transform: scale(1.1);
}

.solution-card:hover .solution-image-text h4 {
    transform: translateY(-2px);
}

.solution-card:hover .solution-image-text p {
    opacity: 1;
}

.solution-card:hover .solution-image {
    border-color: var(--haichat-blue);
}

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

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

.solution-features {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--spacing-md) 0;
}

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

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

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

.solution-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid #333;
}

.solution-meta {
    display: flex;
    gap: var(--spacing-md);
    color: var(--haichat-light-gray);
    font-size: 0.85rem;
}

.solution-meta span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.btn-outline {
    background: transparent;
    color: var(--haichat-blue);
    border: 2px solid var(--haichat-blue);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.9rem;
}

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

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    color: var(--haichat-blue);
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1;
}

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

/* 詳細ソリューションセクション */
.detailed-solutions {
    padding: var(--spacing-xl) 0;
    background: var(--haichat-black);
}

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

.solution-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;
}

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

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

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

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

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

.benefit-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: 1.3rem;
    font-weight: 600;
    margin: 0 0 var(--spacing-md) 0;
}

.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);
    padding-top: var(--spacing-md);
    border-top: 1px solid #333;
}

.use-case-stats .stat {
    text-align: center;
}

.use-case-stats .stat-number {
    display: block;
    color: var(--haichat-purple);
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1;
}

.use-case-stats .stat-label {
    display: block;
    color: var(--haichat-white);
    font-size: 0.8rem;
    margin-top: var(--spacing-xs);
}


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

.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) {
    .solutions-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .solution-benefits {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .use-cases-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .solutions-overview h2,
    .detailed-solutions h2,
    .use-cases h2,
    .industry-comparison h2,
    .cta-content h2 {
        font-size: 2rem;
    }
    
    .solution-detail-content h3 {
        font-size: 1.5rem;
    }
}

/* Medium devices (tablets) */
@media screen and (max-width: 768px) {
    .solution-image {
        height: 300px;
    }

    .solution-image::after {
        height: 200px;
    }
}

/* Small devices (phones) */
@media screen and (max-width: 480px) {
    .solution-card,
    .solution-detail,
    .use-case-card {
        padding: var(--spacing-md);
    }
    
    .solution-icon {
        font-size: 2rem;
    }

    .solution-image {
        height: 260px;
    }

    .solution-image-content {
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
    }

    .solution-image-icon {
        width: 48px;
        height: 48px;
    }

    .solution-image-icon i {
        font-size: 1.4rem;
    }

    .solution-image-text h4 {
        font-size: 1.2rem;
    }

    .solution-image-text p {
        font-size: 0.9rem;
        line-height: 1.4;
    }

    .solution-image::after {
        height: 160px;
    }

    .solution-meta {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .solutions-overview h2,
    .detailed-solutions h2,
    .use-cases h2,
    .industry-comparison h2,
    .cta-content h2 {
        font-size: 1.8rem;
    }
    
    .solution-detail-content h3 {
        font-size: 1.3rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .use-case-stats .stat-number {
        font-size: 1.3rem;
    }
}