/*--------------------------------
プログレッシブエンハンスメント用CSS
--------------------------------*/

/* ベースレイアウト */
.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/*--------------------------------
ヒーローセクション
--------------------------------*/
.hero {
    position: relative;
    min-height: 100vh;
    background: linear-gradient(135deg, #003E5E 0%, #005A9E 50%, #80C0FF 100%);
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    padding: 80px 20px;
    box-sizing: border-box;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('../images/consulting.webp');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    opacity: 0.3;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    width: 100%;
    gap: 60px;
}

.hero-text {
    flex: 1;
    max-width: 600px;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin: 0 0 20px 0;
    color: #ffffff;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    opacity: 0;
    transform: translateX(-50px);
    animation: slideInLeft 1s forwards 0.2s;
}

.hero h2 {
    font-size: clamp(1.2rem, 2.5vw, 1.8rem);
    font-weight: 400;
    margin: 0 0 30px 0;
    line-height: 1.6;
    color: #ffffff;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
    opacity: 0;
    transform: translateX(-50px);
    animation: slideInLeft 1s forwards 0.4s;
}

.hero p {
    font-size: clamp(1rem, 1.5vw, 1.2rem);
    line-height: 1.8;
    color: #ffffff;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
    opacity: 0;
    transform: translateX(-50px);
    animation: slideInLeft 1s forwards 0.6s;
}

.hero-visual {
    flex: 1;
    position: relative;
    height: 400px;
    max-width: 500px;
}

/* テクノロジー要素 */
.tech-element {
    position: absolute;
    width: 90px;
    height: 90px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    cursor: pointer;
    will-change: transform;
    transform-origin: center center;
}

.tech-element:hover {
    transform: scale(1.1);
    background: rgba(255, 255, 255, 0.25);
    box-shadow: 0 8px 32px rgba(255, 255, 255, 0.2);
}

.tech-1 {
    top: 50px;
    left: 50px;
    width: 120px;
    height: 120px;
    font-size: 3rem;
}

.tech-2 {
    top: 80px;
    right: 80px;
    width: 100px;
    height: 100px;
    font-size: 2.8rem;
}

.tech-3 {
    top: 200px;
    left: 20px;
    width: 110px;
    height: 110px;
    font-size: 2.9rem;
}

.tech-4 {
    bottom: 100px;
    right: 50px;
    width: 95px;
    height: 95px;
    font-size: 2.6rem;
}

.tech-5 {
    top: calc(50% - 60px);
    left: calc(50% - 60px);
    width: 120px;
    height: 120px;
    font-size: 3.2rem;
    background: rgba(255, 255, 255, 0.2);
}

/* アニメーション */
@keyframes slideInLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.hero-description::after {
    content: "";
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #003E5E, #80C0FF);
    margin: 15px auto 0;
    border-radius: 2px;
}

/*--------------------------------
メインコンテナ
--------------------------------*/
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 20px;
    box-sizing: border-box;
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

/*--------------------------------
メインコンテナ
--------------------------------*/
.main-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.service-card {
    background: var(--background-color);
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-medium);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-heavy);
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--background-light), var(--background-color));
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
    justify-content: space-between;
}

.card-header:hover {
    background: linear-gradient(135deg, #f0f4f8, var(--background-light));
}

.section-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.card-header h2 {
    font-size: var(--font-size-xl);
    color: var(--primary-color);
    margin: 0;
    flex: 1;
    font-weight: 600;
}

.toggle-icon {
    color: var(--text-light);
    font-size: 1.2rem;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.card-header[aria-expanded="true"] .toggle-icon {
    transform: rotate(180deg);
}

.card-content {
    padding: var(--spacing-lg);
    max-height: 0;
    overflow: visible;
    transition: max-height 0.5s ease, padding 0.3s ease;
}

.card-content.expanded {
    max-height: 5000px; /* 十分な高さを確保 */
    overflow: visible;
    overflow-y: auto;
}

.card-content p {
    font-size: var(--font-size-base);
    line-height: 1.8;
    color: var(--text-color);
    margin-bottom: var(--spacing-sm);
    overflow-wrap: break-word;
}

.card-content a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: var(--transition);
    /* 👇 ここを修正しました 👇 */
    overflow-wrap: break-word;
    word-break: break-all;
}

.card-content a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.card-content a:focus {
    outline: 2px solid var(--secondary-color);
    outline-offset: 2px;
    border-radius: 2px;
}

/*--------------------------------
実績グリッド
--------------------------------*/
.achievement-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.achievement-item {
    background: var(--background-light);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--secondary-color);
    transition: var(--transition);
}

.achievement-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-light);
}

.achievement-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    gap: var(--spacing-sm);
}

.achievement-header h3 {
    font-size: var(--font-size-large);
    color: var(--primary-color);
    margin: 0;
    flex: 1;
}

.achievement-tag {
    background: var(--secondary-color);
    color: white;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: var(--font-size-small);
    font-weight: 500;
    white-space: nowrap;
}

/*--------------------------------
教育の柱
--------------------------------*/
.education-pillars {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.pillar-item {
    background: var(--background-light);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    text-align: left;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.pillar-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
    border-color: var(--secondary-color);
}

.pillar-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.pillar-item h3 {
    font-size: var(--font-size-large);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

/*--------------------------------
コンセプトセクション
--------------------------------*/
.concept-section {
    margin: var(--spacing-lg) 0;
}

.concept-section h3 {
    font-size: var(--font-size-xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.pillars-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.concept-pillar {
    background: var(--background-color);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    text-align: left;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.concept-pillar:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

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

.concept-pillar h4 {
    font-size: var(--font-size-base);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

/*--------------------------------
サポートグリッド
--------------------------------*/
.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.support-item {
    background: var(--background-light);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    text-align: left;
    transition: var(--transition);
}

.support-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-light);
}

.support-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
    display: block;
}

.support-item h4 {
    font-size: var(--font-size-base);
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.support-item p {
    font-size: var(--font-size-small);
    color: var(--text-light);
    margin: 0;
}

/*--------------------------------
ハイライトボックス
--------------------------------*/
.highlight-box {
    background: linear-gradient(135deg, var(--accent-color), #a0d0ff);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin: var(--spacing-lg) 0;
    border-left: 4px solid var(--primary-color);
}

.highlight-box h4 {
    font-size: var(--font-size-large);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.highlight-box p {
    margin: 0;
    color: var(--text-color);
}

/*--------------------------------
画像とギャラリー
--------------------------------*/
.image-container {
    margin: var(--spacing-lg) 0;
    text-align: center;
}

.content-image {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
    transition: var(--transition);
}

.content-image:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-heavy);
}

.image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.gallery-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    transition: var(--transition);
    cursor: pointer;
}

.gallery-image:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-medium);
}

/*--------------------------------
カスタムリスト
--------------------------------*/
.custom-list {
    list-style: none;
    padding-left: 0;
    margin: var(--spacing-lg) 0;
}

.custom-list li {
    background: var(--background-light);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-sm);
    position: relative;
    padding-left: 50px;
    transition: var(--transition);
    border-left: 3px solid var(--secondary-color);
}

.custom-list li:hover {
    background: #f0f4f8;
    transform: translateX(4px);
}

.custom-list li::before {
    content: "✓";
    font-weight: bold;
    color: var(--secondary-color);
    position: absolute;
    left: var(--spacing-md);
    top: var(--spacing-md);
    font-size: 1.2rem;
}

.custom-list li strong {
    font-weight: 700;
    color: var(--primary-color);
}

/*--------------------------------
参考リンク
--------------------------------*/
.reference-links {
    background: var(--background-light);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin: var(--spacing-lg) 0;
    border-left: 3px solid var(--accent-color);
}

.reference-links p {
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-small);
}

.reference-links p:first-child {
    font-weight: 600;
    color: var(--primary-color);
}

/*--------------------------------
実績セクション
--------------------------------*/
.achievements {
    margin: var(--spacing-xxl) auto;
    padding: var(--spacing-xxl) var(--spacing-lg);
    background: linear-gradient(135deg, #f7fafc, #edf2f7);
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-medium);
    text-align: center;
    max-width: 1000px;
}

.achievements h2 {
    font-size: var(--font-size-xxl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-xl);
    font-weight: 700;
    position: relative;
}

.achievements h2::after {
    content: "";
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    margin: var(--spacing-sm) auto 0;
    border-radius: 2px;
}

/*--------------------------------
フィルターボタン
--------------------------------*/
.filter-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 2px solid var(--border-color);
    background: var(--background-color);
    color: var(--text-color);
    border-radius: 25px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    font-size: var(--font-size-small);
}

.filter-btn:hover {
    border-color: var(--secondary-color);
    color: var(--secondary-color);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: var(--secondary-color);
    color: white;
    border-color: var(--secondary-color);
}

.filter-btn:focus {
    outline: 2px solid var(--secondary-color);
    outline-offset: 2px;
}

/*--------------------------------
自治体リスト
--------------------------------*/
.municipality-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    list-style: none;
    padding: 0;
    margin: 0 0 var(--spacing-xl);
}

.municipality-item {
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    font-size: var(--font-size-base);
    line-height: 1.6;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
    opacity: 1;
    transform: scale(1);
}

.municipality-item.hidden {
    opacity: 0;
    transform: scale(0.8);
    pointer-events: none;
}

.municipality-item a {
    color: inherit;
    text-decoration: none;
    display: block;
    height: 100%;
}

.municipality-item span {
    font-weight: 700;
    color: var(--secondary-color);
    margin-right: 0.3em;
    display: block;
    margin-bottom: var(--spacing-xs);
}

.municipality-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-heavy);
    border-color: var(--secondary-color);
}

.achievements-note {
    font-size: var(--font-size-small);
    color: var(--text-light);
    line-height: 1.7;
    font-style: italic;
}

/*--------------------------------
トップに戻るボタン
--------------------------------*/
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-medium);
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    z-index: 997;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-4px) scale(1.1);
    box-shadow: var(--shadow-heavy);
}

.back-to-top:focus {
    outline: 2px solid white;
    outline-offset: 2px;
}

.back-to-top-icon {
    font-size: 1.5rem;
    font-weight: bold;
}

/*--------------------------------
フェードインアニメーション
--------------------------------*/
.fade-in-element {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-element.visible {
    opacity: 1;
    transform: translateY(0);
}

/*--------------------------------
レスポンシブデザイン
--------------------------------*/
@media (max-width: 768px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 60px 20px;
        min-height: 80vh;
    }

    .hero::before {
        background-attachment: scroll;
    }

    .hero-content {
        flex-direction: column;
        max-width: 100%;
        gap: 40px;
        align-items: center;
        padding: 20px;
    }

    .hero-text {
        text-align: left;
        order: 1;
        max-width: 100%;
        margin-bottom: 0;
        padding: 0 10px;
    }

    .hero-visual {
        order: 2;
        max-width: 100%;
        height: 300px;
        margin-top: 20px;
        position: relative;
        width: 100%;
    }

    .tech-element {
        position: static;
        margin: 10px auto;
    }

    .tech-1, .tech-2, .tech-3, .tech-4, .tech-5 {
        position: static;
        margin: 10px auto;
        top: auto;
        left: auto;
        right: auto;
        bottom: auto;
        width: 80px;
        height: 80px;
        font-size: 2rem;
    }

    .hero-visual {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        align-items: center;
        height: auto;
        min-height: 200px;
    }

    .community-visualization {
        width: 300px;
        height: 300px;
    }

    .community-element {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }

    .element-1 {
        margin-left: -30px; /* width/2 */
    }

    .element-2 {
        margin-top: -30px; /* height/2 */
    }

    .element-3 {
        margin-top: -30px; /* height/2 */
    }

    .element-4 {
        margin-left: -30px; /* width/2 */
    }

    .element-5 {
        margin-right: -30px; /* width/2 */
    }

    .container {
        width: 100%;
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    .service-overview-card {
        padding: var(--spacing-lg);
    }

    .service-card {
        overflow: hidden;
    }
    
    .service-stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .card-header {
        padding: var(--spacing-md);
        flex-wrap: wrap;
    }
    
    .card-header h2 {
        font-size: var(--font-size-large);
    }
    
    .card-content {
        padding: var(--spacing-md);
    }
    
    .achievement-grid {
        grid-template-columns: 1fr;
    }
    
    .education-pillars {
        grid-template-columns: 1fr;
    }
    
    .pillars-grid {
        grid-template-columns: 1fr;
    }
    
    .support-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .municipality-list {
        grid-template-columns: 1fr;
    }
    
    .filter-buttons {
        gap: var(--spacing-xs);
    }
    
    .filter-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 12px;
    }
    
    .back-to-top {
        width: 50px;
        height: 50px;
        bottom: 20px;
        right: 20px;
    }
    
    .back-to-top-icon {
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-description {
        font-size: 0.9rem;
    }
    
    .service-overview-card h2 {
        font-size: var(--font-size-xl);
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .achievements {
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    .achievements h2 {
        font-size: var(--font-size-xl);
    }
}

/*--------------------------------
アクセシビリティ強化
--------------------------------*/
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .fade-in-element {
        opacity: 1;
        transform: none;
    }
}

/* ハイコントラストモード対応 */
@media (prefers-contrast: high) {
    .hero {
        background: #000000;
    }
    
    .hero-title,
    .hero-subtitle,
    .hero-description {
        color: #ffffff;
    }
    
    .service-card {
        border: 2px solid var(--text-color);
    }
    
    .achievement-item {
        border: 1px solid var(--text-color);
    }
    
    .filter-btn {
        border-width: 2px;
    }
}

/* スクリーンリーダー用の隠しテキスト */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@media (max-width: 768px) {
    .hero h1,
    .hero h2,
    .hero p {
        opacity: 1;
        transform: none;
        animation: none;
    }
}