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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    color: #ffffff;
}

header {
    padding: 1rem 2rem;
    background: rgba(0, 0, 0, 0.2);
}

.navbar {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: flex-start;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
}

.logo {
    height: 50px;
    width: auto;
}

main {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.hero {
    text-align: center;
    animation: fadeIn 1s ease-in;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1rem;
    background: linear-gradient(90deg, #00d4ff, #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 1.5rem;
    color: #a0aec0;
    margin-bottom: 2rem;
}

#message-container {
    font-size: 1.2rem;
    color: #68d391;
    min-height: 2rem;
}

footer {
    padding: 1.5rem;
    text-align: center;
    background: rgba(0, 0, 0, 0.2);
    color: #718096;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .tagline {
        font-size: 1.2rem;
    }

    .logo {
        height: 40px;
    }
}