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

body {
    font-family: 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

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

/* ヘッダー */
header {
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    padding: 1rem 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 1.5rem;
    color: #e74c3c;
}

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

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: #e74c3c;
}

/* ヒーローセクション */
.hero {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: #fff;
    padding: 100px 0;
    text-align: center;
}

.hero-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

/* ボタン */
.btn {
    display: inline-block;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background-color: #e74c3c;
    color: #fff;
}

.btn-primary:hover {
    background-color: #c0392b;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: #fff;
    color: #e74c3c;
    border: 2px solid #e74c3c;
}

.btn-secondary:hover {
    background-color: #e74c3c;
    color: #fff;
}

/* セクション共通 */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

/* についてセクション */
.about {
    background-color: #fff;
}

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

.about-text p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    text-align: justify;
}

.features {
    list-style: none;
    margin-top: 2rem;
}

.features li {
    padding: 0.5rem 0;
    font-size: 1.1rem;
}

/* クラスセクション */
.classes {
    background-color: #f9f9f9;
}

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

.class-card {
    background-color: #fff;
    border-radius: 10px;
    padding: 2rem;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
}

.class-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

.class-card.free {
    border: 3px solid #27ae60;
}

.badge {
    position: absolute;
    top: -10px;
    right: 20px;
    background-color: #27ae60;
    color: #fff;
    padding: 5px 15px;
    border-radius: 20px;
    font-weight: bold;
    font-size: 0.9rem;
}

.class-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #333;
}

.class-description {
    margin-bottom: 1.5rem;
    color: #666;
    line-height: 1.8;
}

.class-details {
    list-style: none;
    margin-bottom: 1.5rem;
}

.class-details li {
    padding: 0.5rem 0;
    color: #555;
}

.price {
    font-size: 1.8rem;
    font-weight: bold;
    color: #e74c3c;
    margin-bottom: 1rem;
    text-align: center;
}

/* 料金セクション */
.pricing {
    background-color: #fff;
}

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

.pricing-card {
    background-color: #f9f9f9;
    border-radius: 10px;
    padding: 2.5rem;
    text-align: center;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    position: relative;
    transition: transform 0.3s;
}

.pricing-card:hover {
    transform: translateY(-5px);
}

.pricing-card.featured {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: #fff;
    transform: scale(1.05);
}

.pricing-card.featured .price-amount,
.pricing-card.featured h3 {
    color: #fff;
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background-color: #f39c12;
    color: #fff;
    padding: 5px 20px;
    border-radius: 20px;
    font-weight: bold;
    font-size: 0.9rem;
}

.pricing-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.price-amount {
    font-size: 2.5rem;
    font-weight: bold;
    color: #e74c3c;
    margin-bottom: 0.5rem;
}

.price-amount span {
    font-size: 1.2rem;
}

.price-description {
    margin-bottom: 2rem;
    color: #666;
}

.pricing-card.featured .price-description {
    color: rgba(255,255,255,0.9);
}

.price-features {
    list-style: none;
    text-align: left;
    margin-bottom: 2rem;
}

.price-features li {
    padding: 0.8rem 0;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

.pricing-card.featured .price-features li {
    border-bottom: 1px solid rgba(255,255,255,0.2);
}

.note {
    text-align: center;
    color: #666;
    font-style: italic;
    margin-top: 2rem;
}

/* 講師セクション */
.instructors {
    background-color: #f9f9f9;
}

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

.instructor-card {
    background-color: #fff;
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.instructor-avatar {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.instructor-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: #333;
}

.instructor-title {
    color: #e74c3c;
    font-weight: 600;
    margin-bottom: 1rem;
}

.instructor-bio {
    color: #666;
    line-height: 1.8;
}

/* お客様の声セクション */
.testimonials {
    background-color: #fff;
}

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

.testimonial-card {
    background-color: #f9f9f9;
    border-radius: 10px;
    padding: 2rem;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.stars {
    color: #f39c12;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.testimonial-text {
    margin-bottom: 1rem;
    color: #666;
    line-height: 1.8;
    font-style: italic;
}

.testimonial-author {
    color: #e74c3c;
    font-weight: 600;
}

/* お問い合わせセクション */
.contact {
    background-color: #f9f9f9;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
}

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #333;
}

.contact-info p {
    margin-bottom: 1.5rem;
    color: #666;
}

.contact-details {
    list-style: none;
}

.contact-details li {
    padding: 0.8rem 0;
    color: #555;
}

.contact-form {
    background-color: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.contact-form h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: #333;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #333;
    font-weight: 500;
}

.required {
    color: #e74c3c;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #e74c3c;
}

.form-group textarea {
    resize: vertical;
}

/* フッター */
footer {
    background-color: #333;
    color: #fff;
    padding: 3rem 0 1rem;
}

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

.footer-section h4 {
    margin-bottom: 1rem;
    color: #fff;
}

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

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

.footer-section a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: #fff;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #555;
    color: #ccc;
}

/* ウェルカムモーダル */
.modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: #fff;
    margin: auto;
    padding: 2.5rem;
    border-radius: 15px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 5px 30px rgba(0,0,0,0.3);
    position: relative;
    animation: slideIn 0.3s;
    text-align: center;
}

.modal-content h2 {
    color: #e74c3c;
    margin-bottom: 1.5rem;
    font-size: 2rem;
}

.modal-content p {
    margin-bottom: 1rem;
    color: #666;
    line-height: 1.8;
    font-size: 1.1rem;
}

.close-modal {
    position: absolute;
    top: 15px;
    right: 20px;
    color: #aaa;
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s;
}

.close-modal:hover,
.close-modal:focus {
    color: #e74c3c;
}

.close-modal-btn {
    margin-top: 1.5rem;
    width: 100%;
    max-width: 200px;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .nav-menu {
        flex-direction: column;
        gap: 1rem;
    }

    .hero-content h2 {
        font-size: 1.8rem;
    }

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

    .contact-content {
        grid-template-columns: 1fr;
    }

    .pricing-card.featured {
        transform: scale(1);
    }

    .modal-content {
        padding: 2rem 1.5rem;
        width: 95%;
    }

    .modal-content h2 {
        font-size: 1.5rem;
    }

    .modal-content p {
        font-size: 1rem;
    }
}