/* ========================================
   リセットと基本スタイル
======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --dark-color: #1e293b;
    --light-color: #f8fafc;
    --white-color: #ffffff;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --font-family: 'Noto Sans JP', sans-serif;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--white-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========================================
   ヘッダー
======================================== */
.header {
    background-color: var(--white-color);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo h1 a {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.logo-subtitle {
    font-size: 0.75rem;
    color: var(--secondary-color);
    margin-top: -5px;
}

.nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    transition: color 0.3s;
    font-size: 0.95rem;
}

.nav a:hover,
.nav a.active {
    color: var(--primary-color);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--dark-color);
    cursor: pointer;
}

/* ========================================
   ヒーローセクション
======================================== */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white-color);
    padding: 5rem 0;
    text-align: center;
    position: relative;
    background-size: cover;
    background-position: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.85) 0%, rgba(118, 75, 162, 0.85) 100%);
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ========================================
   ボタン
======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background-color: #475569;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-white:hover {
    background-color: var(--light-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: var(--white-color);
}

.btn-outline-white {
    background-color: transparent;
    color: var(--white-color);
    border: 2px solid var(--white-color);
}

.btn-outline-white:hover {
    background-color: var(--white-color);
    color: var(--primary-color);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* ========================================
   セクション共通
======================================== */
section {
    padding: 4rem 0;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.section-subtitle {
    text-align: center;
    color: var(--secondary-color);
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

/* ========================================
   導入メリット
======================================== */
.benefits {
    background-color: var(--light-color);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.benefit-card {
    background-color: var(--white-color);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s;
}

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

.benefit-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.benefit-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--success-color);
    margin-bottom: 0.5rem;
}

.benefit-label {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.benefit-description {
    color: var(--secondary-color);
    font-size: 0.9rem;
}

/* ========================================
   製品カード
======================================== */
.products {
    background-color: var(--white-color);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.product-card {
    background-color: var(--white-color);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    position: relative;
    transition: all 0.3s;
}

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

.product-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background-color: var(--warning-color);
    color: var(--white-color);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-ai {
    background-color: #8b5cf6;
}

.badge-pioneer {
    background-color: #3b82f6;
}

.badge-bus {
    background-color: #10b981;
}

.badge-subsidy {
    background-color: #f59e0b;
}

.product-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 0.25rem;
    margin-top: 1rem;
}

.product-subtitle {
    color: var(--secondary-color);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.product-price {
    background-color: var(--light-color);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.5rem 1rem;
    align-items: baseline;
}

.price-label {
    color: var(--secondary-color);
    font-size: 0.85rem;
}

.price-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    text-align: right;
}

.product-features {
    list-style: none;
    margin-bottom: 1.5rem;
}

.product-features li {
    padding: 0.5rem 0;
    color: var(--dark-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.product-features i {
    color: var(--success-color);
}

.product-recommend {
    background-color: #eff6ff;
    border-left: 4px solid var(--primary-color);
    padding: 0.75rem;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.product-recommend strong {
    color: var(--primary-color);
}

.products-cta {
    text-align: center;
}

/* ========================================
   業種別ナビゲーション
======================================== */
.industry-nav {
    background-color: var(--light-color);
}

.industry-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.industry-card {
    background-color: var(--white-color);
    padding: 2rem;
    border-radius: 12px;
    text-decoration: none;
    color: var(--dark-color);
    transition: all 0.3s;
    box-shadow: var(--shadow-md);
    display: block;
}

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

.industry-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.industry-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--dark-color);
}

.industry-card p {
    color: var(--secondary-color);
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.industry-products {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.industry-products .badge {
    background-color: var(--primary-color);
    color: var(--white-color);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* ========================================
   導入事例プレビュー
======================================== */
.case-studies-preview {
    background-color: var(--white-color);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.case-card {
    background-color: var(--light-color);
    padding: 2rem;
    border-radius: 12px;
    border-left: 4px solid var(--success-color);
}

.case-result {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--success-color);
    margin-bottom: 1rem;
}

.case-company {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.25rem;
}

.case-industry {
    color: var(--secondary-color);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.case-voice {
    color: var(--dark-color);
    font-style: italic;
    margin-bottom: 1rem;
    padding: 1rem;
    background-color: var(--white-color);
    border-radius: 8px;
}

.case-product {
    color: var(--secondary-color);
    font-size: 0.9rem;
}

.case-product strong {
    color: var(--primary-color);
}

.cases-cta {
    text-align: center;
}

/* ========================================
   CTA（お問い合わせ）
======================================== */
.cta {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white-color);
    text-align: center;
    padding: 5rem 0;
}

.cta-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-text {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.cta-info {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
    font-size: 0.95rem;
    opacity: 0.9;
}

.cta-info i {
    margin-right: 0.5rem;
}

/* ========================================
   フッター
======================================== */
.footer {
    background-color: var(--dark-color);
    color: var(--light-color);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: var(--white-color);
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.footer-section h4 {
    color: var(--white-color);
    font-size: 1rem;
    margin-bottom: 1rem;
}

.footer-section p {
    color: var(--secondary-color);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.footer-company {
    color: var(--primary-color);
    font-weight: 600;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: color 0.3s;
    font-size: 0.9rem;
}

.footer-section a:hover {
    color: var(--primary-color);
}

/* ========================================
   フローティングCTAボタン
======================================== */
.floating-cta {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
    animation: fadeInUp 0.5s ease-in-out;
}

.floating-cta-button {
    display: flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    padding: 16px 28px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.4);
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.floating-cta-button:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(16, 185, 129, 0.5);
}

.floating-cta-button i {
    font-size: 1.2rem;
}

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

/* パルスアニメーション */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.floating-cta-button {
    animation: pulse 2s infinite;
}

.floating-cta-button:hover {
    animation: none;
}

/* モバイル対応 */
@media (max-width: 768px) {
    .floating-cta {
        bottom: 20px;
        right: 20px;
    }
    
    .floating-cta-button {
        padding: 14px 24px;
        font-size: 1rem;
    }
    
    .floating-cta-button span {
        display: none;
    }
    
    .floating-cta-button i {
        font-size: 1.5rem;
        margin: 0;
    }
}

@media (max-width: 480px) {
    .floating-cta {
        bottom: 15px;
        right: 15px;
    }
    
    .floating-cta-button {
        padding: 12px 20px;
    }
}

.footer-bottom {
    border-top: 1px solid #334155;
    padding-top: 2rem;
    text-align: center;
    color: var(--secondary-color);
    font-size: 0.9rem;
}

/* ========================================
   レスポンシブデザイン（タブレット）
======================================== */
@media (max-width: 768px) {
    .header-content {
        flex-wrap: wrap;
    }

    .nav {
        display: none;
        width: 100%;
        order: 3;
    }

    .nav.active {
        display: block;
    }

    .nav ul {
        flex-direction: column;
        gap: 1rem;
        padding-top: 1rem;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .products-grid,
    .industry-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }

    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .cta-title {
        font-size: 1.75rem;
    }

    .cta-info {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* ========================================
   レスポンシブデザイン（スマホ）
======================================== */
@media (max-width: 480px) {
    .hero {
        padding: 3rem 0;
    }

    .hero-title {
        font-size: 1.5rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

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

    .benefit-number {
        font-size: 2.5rem;
    }

    .product-card {
        padding: 1.5rem;
    }

    section {
        padding: 3rem 0;
    }

    .btn-large {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
}

/* ========================================
   比較表スタイル
======================================== */
.comparison-table-container {
    overflow-x: auto;
    margin: 2rem 0;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--white-color);
    box-shadow: var(--shadow-md);
    border-radius: 8px;
    overflow: hidden;
}

.comparison-table th,
.comparison-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.comparison-table th {
    background-color: var(--primary-color);
    color: var(--white-color);
    font-weight: 600;
    text-align: center;
}

.comparison-table td {
    text-align: center;
}

.comparison-table td:first-child {
    font-weight: 600;
    background-color: var(--light-color);
    text-align: left;
}

.comparison-table tr:hover {
    background-color: var(--light-color);
}

.table-highlight {
    background-color: #fef3c7 !important;
    font-weight: 700;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* ========================================
   ユーティリティクラス
======================================== */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 2rem; }
.mt-4 { margin-top: 3rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 2rem; }
.mb-4 { margin-bottom: 3rem; }

.hidden {
    display: none;
}