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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* Header and Navigation */
header {
    background: #fff;
    border-bottom: 1px solid #e5e5e5;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: #000;
    text-decoration: none;
}

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

.nav-menu a {
    color: #666;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: #000;
}

/* Hero Section */
.hero {
    padding: 80px 0;
    text-align: center;
    background: linear-gradient(135deg, #f8f9fa 0%, #fff 100%);
}

.hero h1 {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 30px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: #666;
    max-width: 800px;
    margin: 0 auto 60px;
    line-height: 1.8;
}

.download-section {
    margin-top: 60px;
}

.download-section h2 {
    font-size: 2rem;
    margin-bottom: 30px;
    color: #333;
}

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

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    min-width: 150px;
    justify-content: center;
}

.ios-btn {
    background: #000;
    color: #fff;
}

.ios-btn:hover {
    background: #333;
    transform: translateY(-2px);
}

.android-btn {
    background: #34a853;
    color: #fff;
}

.android-btn:hover {
    background: #2d8f47;
    transform: translateY(-2px);
}

.btn-icon {
    font-size: 1.2rem;
}

/* Features Section */
.features {
    padding: 80px 0;
    background: #fff;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.feature-card {
    text-align: center;
    padding: 40px 20px;
    border-radius: 16px;
    background: #f8f9fa;
    transition: transform 0.3s ease;
}

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

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #333;
}

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

/* Footer */
footer {
    background: #f8f9fa;
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid #e5e5e5;
}

footer p {
    color: #666;
    font-size: 0.9rem;
}

/* Page-specific styles */
.page-header {
    padding: 60px 0 40px;
    text-align: center;
    background: #f8f9fa;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    color: #333;
}

.page-header p {
    font-size: 1.2rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

.content-section {
    padding: 60px 0;
}

.content-section h2 {
    font-size: 2.5rem;
    margin-bottom: 30px;
    color: #333;
}

.content-section h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #333;
}

.content-section p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #666;
    margin-bottom: 20px;
}

.content-section ul {
    margin: 20px 0;
    padding-left: 30px;
}

.content-section li {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #666;
    margin-bottom: 10px;
}

/* App Store Button */
.app-store-btn {
    display: inline-block;
    margin: 20px 10px;
    transition: transform 0.3s ease;
}

.app-store-btn:hover {
    transform: scale(1.05);
}

.app-store-btn img {
    height: 60px;
    border-radius: 8px;
}

/* Invite Code Section */
.invite-code-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 60px 0;
    text-align: center;
}

.invite-code-section h2 {
    color: #fff;
    margin-bottom: 30px;
}

.invite-code-section p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.2rem;
    margin-bottom: 30px;
}

.code-display {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    padding: 20px;
    margin: 30px auto;
    max-width: 400px;
    font-family: 'Courier New', monospace;
    font-size: 1.5rem;
    font-weight: bold;
    letter-spacing: 2px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .download-btn {
        width: 100%;
        max-width: 250px;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .content-section h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 60px 0;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .download-section h2 {
        font-size: 1.5rem;
    }
}