/* 問題カード */
.problems {
    background-color: var(--bg-light);
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-top: 50px;
}

.problem-card {
    background: white;
    border-radius: 10px;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
    border-top: 4px solid var(--primary-color);
}

.problem-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.problem-card-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.problem-card-icon img {
    width: 60px;
    height: 60px;
    object-fit: contain;
}

.problem-card h3 {
    margin-bottom: var(--spacing-md);
    color: var(--primary-dark);
    text-align: center;
}

.problem-card p {
    color: #666;
    flex-grow: 1;
}

/* AIについて */
.about-ai {
    text-align: center;
    background-color: white;
}

.about-ai p {
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-xxl);
    margin-top: 50px;
    text-align: left;
}

.feature {
    background: white;
    border-radius: 10px;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.feature::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 164, 179, 0.05) 0%, rgba(255, 255, 255, 0) 60%);
    z-index: -1;
    border-radius: 10px;
    pointer-events: none;
}

.feature-number {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    text-align: center;
    line-height: 50px;
    font-weight: bold;
    margin-bottom: var(--spacing-md);
    font-size: 1.25rem;
    box-shadow: 0 3px 10px rgba(0, 164, 179, 0.3);
}

.feature h3 {
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.feature h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: var(--primary-color);
}

/* 活用事例 */
.use-cases {
    background-color: var(--bg-light);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: 50px;
}

.use-case-card {
    background: white;
    border-radius: 10px;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow);
    transition: var(--transition);
    height: 100%;
}

.use-case-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.use-case-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.use-case-icon img {
    width: 70px;
    height: 70px;
    object-fit: contain;
}

.use-case-card h3 {
    color: var(--primary-dark);
    margin-bottom: var(--spacing-md);
    text-align: center;
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.use-case-card h3::after {
    content: '';
    position: absolute;
    width: 50px;
    height: 2px;
    background-color: var(--primary-light);
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}

/* 導入事例 */
.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-xxl);
    margin-top: 50px;
}

.case-study {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    height: 100%;
}

.case-study:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.case-study-img {
    height: 200px;
    background-color: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.case-study-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.case-study:hover .case-study-img img {
    transform: scale(1.05);
}

.case-study-content {
    padding: var(--spacing-xl);
}

.case-study h3 {
    color: var(--primary-dark);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.case-study-challenge {
    margin-bottom: var(--spacing-lg);
    background-color: rgba(0, 164, 179, 0.05);
    padding: var(--spacing-md);
    border-radius: 5px;
}

.case-study-solution {
    background-color: rgba(0, 164, 179, 0.1);
    padding: var(--spacing-md);
    border-radius: 5px;
}

.case-study-challenge h4, .case-study-solution h4 {
    color: var(--primary-dark);
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
    display: flex;
    align-items: center;
}

.case-study-challenge h4::before, .case-study-solution h4::before {
    content: '';
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--primary-color);
    margin-right: var(--spacing-sm);
}

/* 導入フローセクション */
.process {
    background-color: var(--bg-light);
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.implementation-flow {
    position: relative;
    max-width: 900px;
    margin: 50px auto;
    padding: 30px 0;
}

.implementation-flow::before {
    content: '';
    position: absolute;
    top: 0;
    left: 42px;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, var(--primary-color), var(--primary-light));
    border-radius: 4px;
}

.implementation-step {
    display: flex;
    margin-bottom: 60px;
    position: relative;
}

.implementation-step:last-child {
    margin-bottom: 0;
}

.step-number {
    width: 60px;
    height: 60px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 30px;
    position: relative;
    z-index: 2;
    box-shadow: 0 3px 10px rgba(0, 164, 179, 0.3);
    flex-shrink: 0;
    aspect-ratio: 1 / 1;
}

.step-content {
    flex: 1;
    background-color: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.step-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
}

.step-content h3 {
    color: var(--primary-dark);
    font-size: 1.4rem;
    margin-bottom: 15px;
    font-weight: 600;
    border-bottom: 2px solid var(--primary-light);
    padding-bottom: 10px;
}

.step-content p {
    color: var(--text-color);
    margin-bottom: 20px;
    line-height: 1.6;
}

.step-details {
    background-color: rgba(0, 164, 179, 0.05);
    border-radius: 8px;
    padding: 15px 20px;
    border-left: 3px solid var(--primary-light);
}

.step-detail-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 10px;
}

.step-detail-item:last-child {
    margin-bottom: 0;
}

.step-detail-item i {
    color: var(--primary-color);
    margin-right: 10px;
    font-size: 1.1rem;
    margin-top: 2px;
}

.step-detail-item span {
    flex: 1;
}

.process-summary {
    text-align: center;
    max-width: 800px;
    margin: 60px auto 0;
    background-color: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
}

.process-summary-text {
    font-size: 1.1rem;
    color: var(--text-dark);
    margin-bottom: 25px;
    line-height: 1.7;
}

@media (max-width: 768px) {
    .implementation-flow::before {
        left: 30px;
    }
    
    .step-number {
        width: 60px;
        height: 60px;
        font-size: 24px;
        margin-right: 20px;
    }
    
    .step-content {
        padding: 20px;
    }
    
    .step-content h3 {
        font-size: 1.2rem;
    }
    
    .step-details {
        padding: 12px 15px;
    }
    
    .process-summary {
        padding: 25px 20px;
    }
}

/* 料金プラン */
.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-xxl);
    margin-top: 50px;
}

.pricing-card {
    background: white;
    border-radius: 10px;
    padding: var(--spacing-xxl) var(--spacing-xl);
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
    height: 100%;
    border: 1px solid rgba(0, 164, 179, 0.1);
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-light);
}

.pricing-card h3 {
    color: var(--primary-dark);
    margin-bottom: var(--spacing-lg);
    font-size: 1.5rem;
}

.price {
    font-size: var(--font-lg);
    font-weight: bold;
    color: var(--accent-color);
    margin-bottom: var(--spacing-lg);
    position: relative;
    display: inline-block;
}

.price::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-light);
}

.price-description {
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
    color: #666;
    text-align: center;
}

.pricing-includes {
    text-align: left;
    margin-bottom: var(--spacing-xl);
    margin-left: 20px;
}

.pricing-includes li {
    margin-bottom: var(--spacing-sm);
    list-style-type: disc;
    padding-left: 10px;
    line-height: 1.6;
}

.pricing-includes li:before {
    content: none;
}

/* 問い合わせフォーム */
.contact-form {
    max-width: 700px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-color);
}

.form-group input, 
.form-group select, 
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #e0e0e0;
    border-radius: 5px;
    background-color: #ffffff;
    color: #333333;
    font-size: 16px;
    transition: all 0.3s ease;
}

.form-group input:focus, 
.form-group select:focus, 
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 164, 179, 0.2);
    background-color: #ffffff;
}

.form-group input::placeholder, 
.form-group textarea::placeholder {
    color: #999999;
}

.form-submit {
    text-align: center;
    margin-top: var(--spacing-xl);
}

.form-submit .form-btn {
    background-color: var(--primary-color);
    color: white;
    padding: 12px 30px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.form-submit .form-btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 164, 179, 0.3);
}

.required {
    color: #ff5252;
    margin-left: 3px;
    font-weight: bold;
}

/* フォーム結果メッセージ */
.loading {
    color: var(--primary-color);
    font-weight: 500;
}

.success {
    color: var(--success-color);
    font-weight: 500;
}

.error {
    color: var(--danger-color);
    font-weight: 500;
}

/* フッター会社リンク */
.company-link {
    color: white;
    text-decoration: none;
    transition: color 0.3s ease;
}

.company-link:hover {
    color: var(--primary-light);
    text-decoration: underline;
}

.section-title {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 50px;
    text-align: center;
}

.section-title h2 {
    position: relative;
    margin-bottom: 30px;
    font-size: 2.2rem;
    color: var(--primary-dark);
    font-weight: 700;
    padding-bottom: 15px;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(to right, var(--primary-color), var(--primary-light));
}

.section-title p {
    max-width: 800px;
    margin: 0 auto;
    color: var(--text-light);
    font-size: 1.1rem;
    line-height: 1.6;
}

.section {
    padding: 80px 0;
}

.section:nth-child(odd) {
    background-color: var(--bg-light);
}

.section:nth-child(even) {
    background-color: var(--bg-white);
}

.contact .section-title {
    margin-bottom: 50px;
}

.benefit-icon {
    flex: 0 0 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1.5rem;
    min-width: 70px;
    min-height: 70px;
    box-shadow: 0 3px 10px rgba(0, 164, 179, 0.2);
    aspect-ratio: 1 / 1;
    flex-shrink: 0;
}