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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    background: #0a0a0a;
    color: #ffffff;
    min-height: 100vh;
    overflow-x: hidden;
}

.container {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 1rem;
}

.chess-pattern {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.03;
    z-index: -1;
    background-image: 
        repeating-linear-gradient(
            45deg,
            #ffffff 0px,
            #ffffff 20px,
            transparent 20px,
            transparent 40px
        ),
        repeating-linear-gradient(
            -45deg,
            #ffffff 0px,
            #ffffff 20px,
            transparent 20px,
            transparent 40px
        );
    animation: chessMove 20s linear infinite;
}

@keyframes chessMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(40px, 40px); }
}

.content {
    text-align: center;
    max-width: 600px;
    z-index: 1;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 2rem;
}

.header {
    margin-bottom: 1rem;
}

.logo-placeholder {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, #8b5cf6 0%, #a855f7 50%, #c084fc 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(139, 92, 246, 0.3);
    transition: transform 0.3s ease;
}

.logo-placeholder:hover {
    transform: scale(1.05) rotate(5deg);
}

.logo-placeholder i {
    font-size: 2.5rem;
    color: white;
}

.app-name {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #ffffff 0%, #e2e8f0 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 4px 20px rgba(255, 255, 255, 0.1);
}

.tagline {
    font-size: 1.125rem;
    font-weight: 400;
    color: #94a3b8;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.coming-soon {
    margin: 1rem 0;
}

.coming-soon-text {
    font-size: 2.5rem;
    font-weight: 600;
    color: #8b5cf6;
    margin-bottom: 1rem;
    text-shadow: 0 0 20px rgba(139, 92, 246, 0.5);
}

.description {
    font-size: 1.125rem;
    line-height: 1.7;
    color: #cbd5e1;
    max-width: 500px;
    margin: 0 auto;
    opacity: 0.8;
}

.social-footer {
    margin-top: auto;
    padding-top: 2rem;
    text-align: center;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1.5rem;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #94a3b8;
    text-decoration: none;
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    border: 1px solid #374151;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.social-link:hover {
    color: #8b5cf6;
    border-color: #8b5cf6;
    background: rgba(139, 92, 246, 0.1);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(139, 92, 246, 0.2);
}

.social-link i {
    font-size: 1.25rem;
}

.copyright {
    font-size: 0.875rem;
    color: #64748b;
    opacity: 0.7;
}

@media (max-width: 480px) {
    .container {
        padding: 1rem 0.75rem;
    }
    
    .logo-placeholder {
        width: 70px;
        height: 70px;
        margin-bottom: 1rem;
    }
    
    .logo-placeholder i {
        font-size: 2rem;
    }
    
    .app-name {
        font-size: 2.25rem;
    }
    
    .tagline {
        font-size: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .coming-soon-text {
        font-size: 2rem;
    }
    
    .description {
        font-size: 1rem;
        padding: 0 0.5rem;
    }
    
    .social-links {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }
    
    .social-link {
        width: 200px;
        justify-content: center;
    }
}

@media (min-width: 481px) and (max-width: 768px) {
    .app-name {
        font-size: 2.75rem;
    }
    
    .coming-soon-text {
        font-size: 2.25rem;
    }
    
    .social-links {
        gap: 1.5rem;
    }
}

@media (min-width: 769px) {
    .container {
        padding: 2rem;
    }
    
    .content {
        gap: 2.5rem;
    }
    
    .logo-placeholder {
        width: 100px;
        height: 100px;
        margin-bottom: 2rem;
    }
    
    .logo-placeholder i {
        font-size: 3rem;
    }
    
    .app-name {
        font-size: 3.5rem;
    }
    
    .tagline {
        font-size: 1.25rem;
        margin-bottom: 2.5rem;
    }
    
    .coming-soon-text {
        font-size: 3rem;
    }
    
    .description {
        font-size: 1.25rem;
    }
    
    .social-footer {
        padding-top: 3rem;
    }
}

@media (min-width: 1200px) {
    .app-name {
        font-size: 4rem;
    }
    
    .coming-soon-text {
        font-size: 3.5rem;
    }
}