/* 東亮介社会保険労務士事務所 - メインスタイルシート */
:root {
    --primary-color: #1a5f8a; /* メインカラー（青） */
    --secondary-color: #2ecc71; /* アクセントカラー（緑） */
    --dark-color: #333333;
    --light-color: #f8f9fa;
    --gray-color: #6c757d;
    --border-radius: 8px;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
    line-height: 1.7;
    color: var(--dark-color);
    background-color: #fff;
    padding-top: 80px; /* ヘッダー分の余白 */
}

/* ヘッダー */
.site-header {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    z-index: 1000;
    padding: 1rem 0;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo a {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.logo-sub {
    font-size: 0.9rem;
    color: var(--gray-color);
    display: block;
    letter-spacing: 0.5px;
}

/* ナビゲーション */
.main-nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 600;
    font-size: 1rem;
    padding: 0.5rem 0;
    position: relative;
    transition: var(--transition);
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 3px;
}

/* メインビジュアル・ヒーローセクション */
.hero {
    background: linear-gradient(135deg, #f0f8ff 0%, #e6f7ff 100%);
    padding: 5rem 2rem;
    text-align: center;
    margin-bottom: 4rem;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    line-height: 1.3;
}

.hero-lead {
    font-size: 1.2rem;
    color: var(--gray-color);
    margin-bottom: 2.5rem;
}

/* サービス案内ボタン */
.service-cta {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.cta-button {
    display: inline-block;
    padding: 1.2rem 2.5rem;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    box-shadow: var(--box-shadow);
    text-align: center;
    min-width: 250px;
}

.cta-button:hover {
    background-color: #0f4a75;
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}

.cta-button.secondary {
    background-color: var(--secondary-color);
}

.cta-button.secondary:hover {
    background-color: #25a25a;
}

/* 共通セクションスタイル */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 5rem 0;
}

.section-title {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 3.5rem;
    color: var(--primary-color);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background-color: var(--secondary-color);
    margin: 1rem auto 0;
    border-radius: 2px;
}

/* 強み（特長）セクション */
.strengths-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.strength-card {
    background: white;
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border-top: 5px solid var(--primary-color);
}

.strength-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.strength-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1.2rem;
    color: var(--primary-color);
}

.strength-card p {
    color: var(--gray-color);
}

/* FAQセクション (JS用スタイル) */
.faq-section {
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    padding: 2rem;
}

.faq-item {
    border-bottom: 1px solid #e9ecef;
    padding: 1.5rem 0;
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    text-align: left;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--dark-color);
    padding: 0.5rem 0;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--primary-color);
}

.faq-question::after {
    content: '+';
    font-size: 1.8rem;
    font-weight: 300;
    color: var(--gray-color);
    transition: var(--transition);
}

.faq-question.active::after {
    content: '−';
    color: var(--primary-color);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out;
    color: var(--gray-color);
    line-height: 1.8;
}

.faq-answer.open {
    max-height: 500px; /* 十分な高さを設定 */
    padding-top: 1.2rem;
}

/* 料金表 */
.price-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 2.5rem;
    box-shadow: var(--box-shadow);
    margin-top: 2rem;
    border: 2px solid var(--secondary-color);
}

.price-highlight {
    color: var(--secondary-color);
    font-weight: bold;
    font-size: 1.1rem;
}

/* フッター */
.site-footer {
    background-color: var(--dark-color);
    color: white;
    padding: 3rem 0 1.5rem;
    margin-top: 5rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
}

.footer-logo {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: white;
}

.footer-info p {
    margin-bottom: 0.8rem;
    opacity: 0.9;
}

.social-links {
    display: flex;
    gap: 1.2rem;
    margin-top: 1.5rem;
}

.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    font-size: 1.2rem;
    text-decoration: none;
    transition: var(--transition);
}

.social-icon:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px);
}

.copyright {
    text-align: center;
    padding-top: 2rem;
    margin-top: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.7;
    font-size: 0.9rem;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    body {
        padding-top: 70px;
    }

    .header-container {
        flex-direction: column;
        padding: 0 1rem;
    }

    .logo {
        margin-bottom: 1rem;
        text-align: center;
    }

    .main-nav ul {
        gap: 1.2rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

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

    .service-cta {
        flex-direction: column;
        align-items: center;
    }

    .cta-button {
        width: 100%;
        max-width: 300px;
    }

    .section {
        padding: 3.5rem 0;
    }

    .section-title {
        font-size: 1.9rem;
    }

    .container {
        padding: 0 1.2rem;
    }
}