/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* Header Styles */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar {
    padding: 1rem 0;
}

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

.nav-logo a {
    text-decoration: none;
    color: #2c3e50;
}

.nav-logo h2 {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #667eea;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: width 0.3s ease;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    margin-top: 80px;
    min-height: 70vh;
    display: flex;
    align-items: center;
    padding: 4rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn-primary {
    background: white;
    color: #667eea;
}

.btn-primary:hover {
    background: transparent;
    color: white;
    border-color: white;
}

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

.btn-secondary:hover {
    background: white;
    color: #667eea;
}

.btn-outline {
    background: transparent;
    color: #667eea;
    border-color: #667eea;
}

.btn-outline:hover {
    background: #667eea;
    color: white;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.placeholder-image {
    width: 100%;
    height: 300px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: rgba(255, 255, 255, 0.7);
    border: 2px dashed rgba(255, 255, 255, 0.3);
}

.placeholder-image i {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* Features Section */
.features {
    padding: 5rem 0;
    background: #f8f9fa;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: #2c3e50;
}

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

.feature-card {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 1.8rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

/* Latest News Section */
.latest-news {
    padding: 5rem 0;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.news-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.news-image {
    height: 200px;
    background: #f8f9fa;
}

.news-image .placeholder-image {
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 0;
}

.news-content {
    padding: 1.5rem;
}

.news-date {
    color: #667eea;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.news-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    color: #2c3e50;
}

.news-excerpt {
    color: #666;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.news-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.news-link:hover {
    color: #764ba2;
}

.news-more {
    text-align: center;
}

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

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* Footer */
.footer {
    background: #2c3e50;
    color: white;
    padding: 3rem 0 1rem;
}

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

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: #ecf0f1;
}

.footer-section h3 {
    font-size: 1.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

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

.footer-section ul li a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #667eea;
}

.footer-section ul li i {
    margin-right: 0.5rem;
    color: #667eea;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #667eea;
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 2rem;
    text-align: center;
    color: #95a5a6;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

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

    .nav-menu li {
        margin: 1rem 0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

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

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

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

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

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }
}

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

    .hero {
        padding: 2rem 0;
    }

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

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

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .feature-card,
    .news-content {
        padding: 1.5rem;
    }
}

/* Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.6s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.6s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Page-specific Styles */
.page-hero {
    margin-top: 80px;
    padding: 4rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.page-hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.page-hero p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* About Page Styles */
.about-overview {
    padding: 5rem 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: #2c3e50;
}

.about-text p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
    color: #666;
}

.about-image {
    display: flex;
    justify-content: center;
}

.about-image .placeholder-image {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    border: none;
}

/* Mission & Vision Section */
.mission-vision {
    padding: 5rem 0;
    background: #f8f9fa;
}

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

.mv-card {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.mv-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.mv-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 1.8rem;
}

.mv-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.mv-card p {
    color: #666;
    line-height: 1.6;
}

/* History/Timeline Section */
.history {
    padding: 5rem 0;
}

.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    margin-bottom: 3rem;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-date {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-weight: 600;
    margin: 0 2rem;
    min-width: 80px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.timeline-content {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    flex: 1;
    max-width: 300px;
}

.timeline-content h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

.timeline-content p {
    color: #666;
    line-height: 1.6;
}

/* Statistics Section */
.statistics {
    padding: 5rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

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

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Responsive Design for About Page */
@media (max-width: 768px) {
    .page-hero h1 {
        font-size: 2.5rem;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .about-text h2 {
        font-size: 2rem;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        flex-direction: column;
        padding-left: 3rem;
    }

    .timeline-item:nth-child(even) {
        flex-direction: column;
    }

    .timeline-date {
        position: absolute;
        left: -2rem;
        top: 0;
        margin: 0;
        min-width: 60px;
        font-size: 0.9rem;
        padding: 0.3rem 0.5rem;
    }

    .timeline-content {
        max-width: none;
    }

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

    .stat-number {
        font-size: 2.5rem;
    }
}    @media (max-width: 480px) {
        .stats-grid {
            grid-template-columns: 1fr;
        }
    }

    /* Activities Page Styles */
    .activities-overview {
        padding: 5rem 0;
    }

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

    .category-card {
        background: white;
        padding: 2.5rem;
        border-radius: 15px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
        text-align: center;
    }

    .category-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
    }

    .category-icon {
        width: 80px;
        height: 80px;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 1.5rem;
        color: white;
        font-size: 1.8rem;
    }

    .category-card h3 {
        font-size: 1.5rem;
        font-weight: 600;
        margin-bottom: 1rem;
        color: #2c3e50;
    }

    .category-card > p {
        color: #666;
        margin-bottom: 1.5rem;
        line-height: 1.6;
    }

    .activity-list {
        list-style: none;
        text-align: left;
    }

    .activity-list li {
        padding: 0.5rem 0;
        color: #666;
        position: relative;
        padding-left: 1.5rem;
    }

    .activity-list li::before {
        content: '✓';
        position: absolute;
        left: 0;
        color: #667eea;
        font-weight: bold;
    }

    /* Current Projects */
    .current-projects {
        padding: 5rem 0;
        background: #f8f9fa;
    }

    .projects-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
        gap: 2rem;
    }

    .project-card {
        background: white;
        border-radius: 15px;
        overflow: hidden;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .project-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
    }

    .project-image {
        height: 200px;
        background: #f0f0f0;
    }

    .project-image .placeholder-image {
        height: 100%;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        color: white;
        border: none;
        border-radius: 0;
    }

    .project-content {
        padding: 1.5rem;
    }

    .project-category {
        display: inline-block;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        color: white;
        padding: 0.3rem 0.8rem;
        border-radius: 20px;
        font-size: 0.8rem;
        font-weight: 500;
        margin-bottom: 1rem;
    }

    .project-content h3 {
        font-size: 1.3rem;
        font-weight: 600;
        margin-bottom: 0.8rem;
        color: #2c3e50;
    }

    .project-content p {
        color: #666;
        margin-bottom: 1.5rem;
        line-height: 1.6;
    }

    .project-progress {
        margin-bottom: 1rem;
    }

    .progress-bar {
        width: 100%;
        height: 8px;
        background: #e0e0e0;
        border-radius: 4px;
        overflow: hidden;
        margin-bottom: 0.5rem;
    }

    .progress-fill {
        height: 100%;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        transition: width 0.3s ease;
    }

    .project-progress span {
        font-size: 0.9rem;
        color: #666;
    }

    .project-team {
        font-size: 0.9rem;
        color: #666;
    }

    /* Weekly Schedule */
    .weekly-schedule {
        padding: 5rem 0;
    }

    .schedule-grid {
        display: grid;
        grid-template-columns: repeat(7, 1fr);
        gap: 1rem;
        margin-bottom: 2rem;
    }

    .schedule-day {
        background: white;
        border-radius: 10px;
        padding: 1.5rem 1rem;
        box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
        text-align: center;
    }

    .schedule-day.weekend {
        background: #f8f9fa;
    }

    .schedule-day h4 {
        font-size: 1.1rem;
        font-weight: 600;
        margin-bottom: 1rem;
        color: #2c3e50;
        padding-bottom: 0.5rem;
        border-bottom: 2px solid #667eea;
    }

    .schedule-items {
        min-height: 100px;
    }

    .schedule-item {
        margin-bottom: 1rem;
    }

    .schedule-item .time {
        display: block;
        font-size: 0.8rem;
        color: #667eea;
        font-weight: 500;
        margin-bottom: 0.3rem;
    }

    .schedule-item .activity {
        display: block;
        font-size: 0.9rem;
        color: #666;
        line-height: 1.4;
    }

    .schedule-note {
        background: #e3f2fd;
        padding: 1rem;
        border-radius: 8px;
        border-left: 4px solid #667eea;
    }

    .schedule-note p {
        margin: 0;
        color: #666;
        font-size: 0.9rem;
    }

    .schedule-note i {
        color: #667eea;
        margin-right: 0.5rem;
    }

    /* How to Join */
    .how-to-join {
        padding: 5rem 0;
        background: #f8f9fa;
    }

    .join-steps {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 2rem;
        max-width: 1000px;
        margin: 0 auto;
    }

    .step-item {
        background: white;
        padding: 2rem;
        border-radius: 15px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
        text-align: center;
        position: relative;
    }

    .step-number {
        width: 50px;
        height: 50px;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        color: white;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.2rem;
        font-weight: 700;
        margin: 0 auto 1.5rem;
    }

    .step-content h4 {
        font-size: 1.2rem;
        font-weight: 600;
        margin-bottom: 0.8rem;
        color: #2c3e50;
    }

    .step-content p {
        color: #666;
        line-height: 1.6;
    }

    /* Responsive Design for Activities Page */
    @media (max-width: 768px) {
        .activity-categories {
            grid-template-columns: 1fr;
        }

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

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

        .join-steps {
            grid-template-columns: 1fr;
        }

        .schedule-day {
            padding: 1rem 0.5rem;
        }

        .schedule-day h4 {
            font-size: 1rem;
        }
    }

    @media (max-width: 480px) {
        .schedule-grid {
            grid-template-columns: 1fr;
        }

        .category-card,
        .project-card,
        .step-item {
            padding: 1.5rem;
        }
    }