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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    position: relative;
}

.container {
    text-align: center;
    padding: 2rem;
    z-index: 2;
}

#greeting {
    font-size: 3rem;
    color: white;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    margin-bottom: 2rem;
    animation: fadeIn 1s ease-in;
    background: rgba(0,0,0,0.3);
    padding: 1rem;
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

.video-container {
    margin-top: 2rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    animation: slideUp 0.8s ease-out;
}

video {
    width: 100%;
    max-width: 800px;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    cursor: pointer;
}

.video-message {
    color: white;
    margin-top: 1rem;
    font-size: 1.2rem;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

.fireworks-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    #greeting {
        font-size: 2rem;
    }
    
    .container {
        padding: 1rem;
    }
    
    video {
        max-width: 100%;
    }
}

canvas {
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 3;
}