/* ========================================
   基本設定
   ======================================== */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --text-color: #333;
    --text-light: #555;
    --text-lighter: #777;
    --bg-color: #ffffff;
    --bg-light: #f8f9fa;
    --bg-lighter: #fdfdfd;
    --border-color: #e0e0e0;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Sans', sans-serif;
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--bg-color);
    overflow-x: hidden;
}

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

/* ========================================
   ナビゲーションバー
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4em;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-logo i {
    color: var(--accent-color);
    font-size: 1.2em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--secondary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary-color);
    transition: var(--transition);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-cta {
    background-color: var(--accent-color);
    color: white !important;
    padding: 10px 20px;
    border-radius: 25px;
}

.nav-cta::after {
    display: none;
}

.nav-cta:hover {
    background-color: #c0392b;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 3px 0;
    transition: var(--transition);
    border-radius: 3px;
}

/* ========================================
   ヒーローセクション
   ======================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    opacity: 0.95;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: white;
    padding: 20px;
    max-width: 900px;
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-badge {
    display: inline-block;
    background-color: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 0.9em;
    font-weight: 500;
    margin-bottom: 20px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero-title {
    font-size: 4em;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 3px;
    text-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: 1.3em;
    margin-bottom: 40px;
    line-height: 1.8;
    font-weight: 400;
}

.highlight-text {
    background: linear-gradient(to right, #f39c12, #e74c3c);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 35px;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1em;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background-color: transparent;
    color: white;
    border: 2px solid white;
}

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

.btn-large {
    padding: 18px 40px;
    font-size: 1.1em;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: white;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* ========================================
   セクション共通
   ======================================== */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-label {
    display: inline-block;
    color: var(--secondary-color);
    font-weight: 600;
    font-size: 0.9em;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.section-title {
    font-size: 2.5em;
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: 20px;
}

.section-description {
    font-size: 1.1em;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ========================================
   About Section
   ======================================== */
.about-section {
    background-color: var(--bg-light);
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: 50px;
}

.about-text {
    max-width: 900px;
    margin: 0 auto;
}

.lead-text {
    font-size: 1.2em;
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.about-text p {
    margin-bottom: 20px;
    line-height: 1.9;
    text-align: justify;
}

.highlight {
    background-color: #fff3cd;
    padding: 2px 6px;
    font-weight: 600;
    border-radius: 3px;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: white;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.feature-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--secondary-color), #667eea);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.8em;
}

.feature-card h3 {
    font-size: 1.3em;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* ========================================
   Reasons Section
   ======================================== */
.reasons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.reason-card {
    background-color: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.reason-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary-color), #667eea);
}

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

.reason-card-wide {
    grid-column: span 2;
}

.reason-number {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 3em;
    font-weight: 700;
    color: rgba(52, 152, 219, 0.1);
}

.reason-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--secondary-color), #667eea);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5em;
    margin-bottom: 20px;
}

.reason-title {
    font-size: 1.3em;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 15px;
    line-height: 1.5;
}

.reason-description {
    color: var(--text-light);
    line-height: 1.8;
}

/* ========================================
   Skills Section
   ======================================== */
.skills-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.skills-section .section-label {
    color: rgba(255, 255, 255, 0.9);
}

.skills-section .section-title {
    color: white;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.skill-card {
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 40px;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
    text-align: center;
}

.skill-card:hover {
    background-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.skill-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2em;
}

.skill-title {
    font-size: 1.4em;
    font-weight: 600;
    margin-bottom: 15px;
}

.skill-description {
    line-height: 1.8;
    opacity: 0.95;
}

/* ========================================
   Spirit Section
   ======================================== */
.spirit-section {
    background-color: var(--bg-light);
}

.spirit-card {
    background-color: white;
    padding: 50px;
    border-radius: 20px;
    border-left: 6px solid var(--accent-color);
    box-shadow: var(--shadow);
    max-width: 900px;
    margin: 0 auto;
}

.spirit-icon {
    text-align: center;
    font-size: 3em;
    color: var(--accent-color);
    margin-bottom: 20px;
}

.spirit-title {
    font-size: 1.6em;
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 25px;
    text-align: center;
}

.spirit-card p {
    margin-bottom: 20px;
    line-height: 1.9;
    text-align: justify;
}

/* ========================================
   Benefits Section
   ======================================== */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px;
}

.benefit-box {
    background-color: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.benefit-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.benefit-header i {
    font-size: 2em;
    color: var(--secondary-color);
}

.benefit-header h3 {
    font-size: 1.4em;
    color: var(--primary-color);
    font-weight: 600;
}

.benefit-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.benefit-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    line-height: 1.7;
}

.benefit-list i {
    color: var(--secondary-color);
    margin-top: 3px;
    flex-shrink: 0;
}

/* ========================================
   Learning Section
   ======================================== */
.learning-section {
    background-color: var(--bg-light);
}

.learning-content {
    max-width: 900px;
    margin: 0 auto;
}

.learning-text {
    margin-bottom: 50px;
}

.learning-text p {
    margin-bottom: 20px;
    line-height: 1.9;
    text-align: justify;
}

.learning-cycle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.cycle-item {
    background-color: white;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
    position: relative;
    min-width: 180px;
}

.cycle-number {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 35px;
    height: 35px;
    background: linear-gradient(135deg, var(--secondary-color), #667eea);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    box-shadow: var(--shadow);
}

.cycle-icon {
    font-size: 2.5em;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.cycle-item h4 {
    font-size: 1.2em;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.cycle-item p {
    color: var(--text-light);
    font-size: 0.9em;
}

.cycle-arrow {
    font-size: 2em;
    color: var(--secondary-color);
}

/* ========================================
   Outcomes Section
   ======================================== */
.outcomes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.outcome-card {
    background-color: white;
    padding: 35px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.outcome-icon {
    font-size: 3em;
    margin-bottom: 20px;
}

.outcome-card h3 {
    font-size: 1.2em;
    color: var(--primary-color);
    margin-bottom: 15px;
    font-weight: 600;
}

.outcome-card p {
    color: var(--text-light);
    line-height: 1.8;
}

.outcome-examples {
    background-color: white;
    padding: 40px;
    border-radius: 15px;
    border-left: 5px solid var(--accent-color);
    box-shadow: var(--shadow);
}

.outcome-examples h3 {
    font-size: 1.4em;
    color: var(--accent-color);
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.examples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.example-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 15px;
    background-color: var(--bg-light);
    border-radius: 10px;
}

.example-item i {
    color: var(--secondary-color);
    margin-top: 3px;
    flex-shrink: 0;
}

/* ========================================
   Summary Section
   ======================================== */
.summary-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.summary-card {
    max-width: 900px;
    margin: 0 auto;
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 50px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.summary-title {
    font-size: 2em;
    text-align: center;
    margin-bottom: 30px;
}

.summary-content p {
    margin-bottom: 20px;
    line-height: 1.9;
    text-align: justify;
}

.summary-lead {
    font-size: 1.2em;
    font-weight: 500;
}

.highlight-large {
    font-size: 1.1em;
    font-weight: 700;
    background: linear-gradient(to right, #f39c12, #e74c3c);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========================================
   Contact Section
   ======================================== */
.contact-section {
    background-color: var(--bg-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 50px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-form {
    background-color: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--primary-color);
}

.required {
    color: var(--accent-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1em;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.info-item {
    display: flex;
    gap: 20px;
    background-color: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.info-item i {
    font-size: 1.8em;
    color: var(--secondary-color);
}

.info-item h4 {
    color: var(--primary-color);
    margin-bottom: 8px;
    font-size: 1.1em;
}

.info-item p {
    color: var(--text-light);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background-color: var(--primary-color);
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 50px;
    margin-bottom: 40px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5em;
    font-weight: 700;
}

.footer-logo i {
    color: var(--accent-color);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 30px;
}

.footer-col h4 {
    margin-bottom: 15px;
    font-size: 1.1em;
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-col a:hover {
    color: white;
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

/* ========================================
   Back to Top Button
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--secondary-color), #667eea);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.2em;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow);
    z-index: 999;
}

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

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* ========================================
   アニメーション
   ======================================== */
[data-aos] {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animate {
    opacity: 1;
}

[data-aos="fade-up"] {
    transform: translateY(30px);
}

[data-aos="fade-up"].aos-animate {
    transform: translateY(0);
}

/* ========================================
   レスポンシブデザイン
   ======================================== */
@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: var(--transition);
        box-shadow: var(--shadow);
        padding: 20px 0;
        gap: 15px;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }

    .hero-title {
        font-size: 2.5em;
    }

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

    .reason-card-wide {
        grid-column: span 1;
    }

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

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }

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

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

    .hero-buttons {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
        margin: 0 auto;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .about-features,
    .skills-grid,
    .reasons-grid,
    .outcomes-grid {
        grid-template-columns: 1fr;
    }

    .cycle-arrow {
        transform: rotate(90deg);
    }

    .spirit-card,
    .summary-card {
        padding: 30px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 1.8em;
    }

    .section-title {
        font-size: 1.6em;
    }

    .contact-form,
    .benefit-box,
    .outcome-examples {
        padding: 25px;
    }
}