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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 25%, #1e40af 50%, #3b82f6 75%, #60a5fa 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    animation: gradientShift 15s ease infinite;
    background-size: 400% 400%;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.container {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 30px;
    padding: 40px;
    max-width: 900px;
    width: 100%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    text-align: center;
}

header h1 {
    font-size: 3rem;
    color: #3b82f6;
    text-shadow: 2px 2px 4px rgba(59, 130, 246, 0.3);
    margin-bottom: 10px;
}

.subtitle {
    font-size: 1.2rem;
    color: #60a5fa;
    font-weight: 600;
    margin-bottom: 30px;
}

main {
    margin: 30px 0;
}

.image-container {
    margin: 30px auto;
    max-width: 100%;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.4);
}

.image-container img {
    width: 100%;
    height: auto;
    display: block;
}

.message {
    margin-top: 40px;
    padding: 20px;
    background: linear-gradient(135deg, #dbeafe 0%, #e0f2fe 100%);
    border-radius: 15px;
    border: 3px solid #3b82f6;
}

.message p {
    font-size: 1.2rem;
    color: #1e40af;
    margin: 10px 0;
    font-weight: 500;
}

footer {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 2px solid #3b82f6;
}

footer p {
    color: #60a5fa;
    font-size: 0.9rem;
}

/* Responsive design */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    .container {
        padding: 20px;
    }

    .message p {
        font-size: 1rem;
    }
}