/* 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;
    background: linear-gradient(135deg, #2f3b69 0%, #1a2332 100%);
    min-height: 100vh;
}

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

/* Header Styles */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    padding: 2rem 0;
    text-align: center;
}

.logo {
    height: 60px;
    width: auto;
    margin-bottom: 0.5rem;
}

.logo img {
    height: 100%;
    width: auto;
}

.tagline {
    font-size: 1.2rem;
    color: #666;
    font-weight: 300;
}

/* Main Content */
.main {
    padding: 4rem 0;
}

.intro {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 3rem;
    margin-bottom: 3rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.intro h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #333;
}

.intro p {
    font-size: 1.1rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

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

.link-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.link-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.link-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: #333;
}

.link-card p {
    color: #666;
    margin-bottom: 2rem;
    font-size: 1rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, #2f3b69, #4a5d8a);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(47, 59, 105, 0.3);
}

.btn-secondary {
    background: linear-gradient(135deg, #4a5d8a, #6b7ba8);
    color: white;
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(74, 93, 138, 0.3);
}

/* Contact Section */
.contact {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 3rem;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.contact h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #333;
}

.contact p {
    color: #666;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.contact-info {
    font-weight: 500;
    color: #2f3b69;
    font-size: 1.2rem;
}

/* Footer */
.footer {
    background: rgba(0, 0, 0, 0.8);
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 4rem;
}

/* Page-specific styles */
.page-content {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 3rem;
    margin: 2rem 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.page-content h1 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: #333;
    text-align: center;
}

.page-content h2 {
    font-size: 1.8rem;
    margin: 2rem 0 1rem 0;
    color: #333;
    border-bottom: 2px solid #2f3b69;
    padding-bottom: 0.5rem;
}

.page-content h3 {
    font-size: 1.4rem;
    margin: 1.5rem 0 0.8rem 0;
    color: #555;
}

.page-content p {
    margin-bottom: 1rem;
    color: #666;
    line-height: 1.8;
}

.page-content ul, .page-content ol {
    margin: 1rem 0 1rem 2rem;
    color: #666;
}

.page-content li {
    margin-bottom: 0.5rem;
}

.back-link {
    display: inline-block;
    margin-bottom: 2rem;
    color: #2f3b69;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.back-link:hover {
    color: #4a5d8a;
}

/* Navigation */
.navigation {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.nav-link {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 500;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* Language Selector */
.language-selector {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.lang-btn {
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.lang-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.lang-btn.active {
    background: rgba(255, 255, 255, 0.9);
    color: #333;
    border-color: rgba(255, 255, 255, 0.5);
}

/* Language Links */
.language-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
    margin-top: 1rem;
}

.language-links .btn {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
    margin: 0.2rem;
}

/* Support Page Styles */
.contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.contact-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 1.5rem;
    text-align: center;
    transition: transform 0.3s ease, background 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.contact-card:hover {
    transform: translateY(-3px);
    background: rgba(255, 255, 255, 1);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.contact-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
    color: #333;
}

.contact-card p {
    color: #666;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.faq-section {
    margin: 2rem 0;
}

.faq-section h3 {
    color: #333;
    font-size: 1.1rem;
    margin: 1.5rem 0 0.5rem 0;
    padding-left: 1rem;
    border-left: 3px solid #2f3b69;
}

.faq-section p {
    margin-left: 1rem;
    color: #666;
    line-height: 1.6;
}

.back-to-app {
    background: rgba(47, 59, 105, 0.1);
    border-radius: 15px;
    padding: 1.5rem;
    margin: 2rem 0;
    border-left: 4px solid #2f3b69;
}

.back-to-app h3 {
    color: #333;
    margin-bottom: 1rem;
}

.back-to-app ul {
    margin-left: 1rem;
    color: #666;
}

.back-to-app li {
    margin-bottom: 0.5rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .logo {
        font-size: 2.5rem;
    }
    
    .tagline {
        font-size: 1rem;
    }
    
    .intro, .link-card, .contact, .page-content {
        padding: 2rem;
    }
    
    .intro h2 {
        font-size: 2rem;
    }
    
    .page-content h1 {
        font-size: 2rem;
    }
    
    .links {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .intro, .link-card, .contact, .page-content {
        padding: 1.5rem;
    }
    
    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }
}