@import url('https://fonts.googleapis.com/css2?family=Mountains+of+Christmas&family=Fredoka+One:wght@400&display=swap');

body {
    background: linear-gradient(180deg, #000811 0%, #001122 30%, #002244 70%, #003366 100%);
    background-attachment: fixed;
    font-family: 'Fredoka One', cursive;
    text-align: center;
    margin: 0;
    padding: 20px;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse 800px 400px at 20% 10%, rgba(0, 255, 150, 0.2) 0%, transparent 60%),
        radial-gradient(ellipse 600px 300px at 80% 20%, rgba(100, 200, 255, 0.15) 0%, transparent 60%),
        radial-gradient(ellipse 400px 600px at 50% 15%, rgba(255, 100, 200, 0.1) 0%, transparent 60%);
    animation: aurora-flow 20s linear infinite;
    pointer-events: none;
    z-index: -1;
}

@keyframes aurora-flow {
    0% {
        background: 
            radial-gradient(ellipse 800px 400px at 20% 10%, rgba(0, 255, 150, 0.2) 0%, transparent 60%),
            radial-gradient(ellipse 600px 300px at 80% 20%, rgba(100, 200, 255, 0.15) 0%, transparent 60%),
            radial-gradient(ellipse 400px 600px at 50% 15%, rgba(255, 100, 200, 0.1) 0%, transparent 60%);
    }
    10% {
        background: 
            radial-gradient(ellipse 700px 450px at 30% 15%, rgba(50, 255, 100, 0.25) 0%, transparent 65%),
            radial-gradient(ellipse 650px 350px at 70% 25%, rgba(150, 180, 255, 0.18) 0%, transparent 65%),
            radial-gradient(ellipse 450px 550px at 60% 20%, rgba(255, 150, 180, 0.12) 0%, transparent 65%);
    }
    20% {
        background: 
            radial-gradient(ellipse 600px 500px at 40% 20%, rgba(100, 255, 50, 0.3) 0%, transparent 70%),
            radial-gradient(ellipse 700px 400px at 60% 30%, rgba(200, 160, 255, 0.2) 0%, transparent 70%),
            radial-gradient(ellipse 500px 500px at 70% 25%, rgba(255, 200, 160, 0.15) 0%, transparent 70%);
    }
    30% {
        background: 
            radial-gradient(ellipse 750px 350px at 60% 25%, rgba(150, 255, 0, 0.22) 0%, transparent 60%),
            radial-gradient(ellipse 550px 450px at 40% 35%, rgba(255, 140, 255, 0.17) 0%, transparent 60%),
            radial-gradient(ellipse 350px 650px at 80% 30%, rgba(255, 255, 140, 0.1) 0%, transparent 60%);
    }
    40% {
        background: 
            radial-gradient(ellipse 650px 400px at 70% 30%, rgba(200, 255, 100, 0.18) 0%, transparent 65%),
            radial-gradient(ellipse 600px 500px at 30% 40%, rgba(255, 120, 200, 0.15) 0%, transparent 65%),
            radial-gradient(ellipse 400px 700px at 90% 35%, rgba(200, 255, 200, 0.08) 0%, transparent 65%);
    }
    50% {
        background: 
            radial-gradient(ellipse 800px 300px at 80% 35%, rgba(255, 255, 150, 0.15) 0%, transparent 70%),
            radial-gradient(ellipse 500px 550px at 20% 45%, rgba(255, 100, 150, 0.12) 0%, transparent 70%),
            radial-gradient(ellipse 450px 750px at 100% 40%, rgba(150, 255, 255, 0.06) 0%, transparent 70%);
    }
    60% {
        background: 
            radial-gradient(ellipse 700px 450px at 90% 40%, rgba(255, 200, 200, 0.2) 0%, transparent 60%),
            radial-gradient(ellipse 650px 400px at 10% 50%, rgba(200, 100, 255, 0.18) 0%, transparent 60%),
            radial-gradient(ellipse 500px 600px at 110% 45%, rgba(100, 255, 255, 0.1) 0%, transparent 60%);
    }
    70% {
        background: 
            radial-gradient(ellipse 600px 500px at 100% 45%, rgba(255, 150, 255, 0.25) 0%, transparent 65%),
            radial-gradient(ellipse 700px 350px at 0% 55%, rgba(150, 200, 255, 0.2) 0%, transparent 65%),
            radial-gradient(ellipse 550px 550px at 120% 50%, rgba(255, 255, 100, 0.12) 0%, transparent 65%);
    }
    80% {
        background: 
            radial-gradient(ellipse 750px 400px at 110% 50%, rgba(255, 100, 255, 0.3) 0%, transparent 70%),
            radial-gradient(ellipse 600px 450px at -10% 60%, rgba(100, 255, 200, 0.22) 0%, transparent 70%),
            radial-gradient(ellipse 400px 650px at 130% 55%, rgba(255, 255, 200, 0.08) 0%, transparent 70%);
    }
    90% {
        background: 
            radial-gradient(ellipse 650px 350px at 10% 55%, rgba(200, 50, 255, 0.22) 0%, transparent 60%),
            radial-gradient(ellipse 550px 500px at 90% 65%, rgba(50, 255, 150, 0.18) 0%, transparent 60%),
            radial-gradient(ellipse 450px 700px at 140% 60%, rgba(255, 200, 255, 0.1) 0%, transparent 60%);
    }
    100% {
        background: 
            radial-gradient(ellipse 800px 400px at 20% 10%, rgba(0, 255, 150, 0.2) 0%, transparent 60%),
            radial-gradient(ellipse 600px 300px at 80% 20%, rgba(100, 200, 255, 0.15) 0%, transparent 60%),
            radial-gradient(ellipse 400px 600px at 50% 15%, rgba(255, 100, 200, 0.1) 0%, transparent 60%);
    }
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(2px 2px at 20px 30px, #fff, transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.8), transparent),
        radial-gradient(1px 1px at 90px 40px, #fff, transparent),
        radial-gradient(1px 1px at 130px 80px, rgba(255,255,255,0.6), transparent),
        radial-gradient(2px 2px at 160px 30px, #fff, transparent);
    background-repeat: repeat;
    background-size: 200px 100px;
    animation: twinkle 3s ease-in-out infinite alternate;
    pointer-events: none;
    z-index: -1;
}

@keyframes twinkle {
    0% { opacity: 0.3; }
    100% { opacity: 1; }
}

h1 {
    font-family: 'Mountains of Christmas', cursive;
    color: #fff;
    text-shadow: 0 0 20px rgba(255,255,255,0.8), 0 0 40px rgba(0,255,255,0.5);
    font-size: 3.5em;
    margin: 20px 0 40px 0;
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from { text-shadow: 0 0 20px rgba(255,255,255,0.8), 0 0 40px rgba(0,255,255,0.5); }
    to { text-shadow: 0 0 30px rgba(255,255,255,1), 0 0 60px rgba(0,255,255,0.8); }
}

#myCanvas {
    border: 8px solid #fff;
    border-radius: 25px;
    box-shadow:
        0 0 50px rgba(255,255,255,0.3),
        0 20px 40px rgba(0,0,0,0.5),
        inset 0 0 20px rgba(255,255,255,0.1);
    margin: 30px 0;
    transition: all 0.5s ease;
    background: linear-gradient(45deg, #f8f9fa, #e9ecef);
}

#myCanvas:hover {
    transform: scale(1.05) rotateY(5deg);
    box-shadow:
        0 0 80px rgba(255,255,255,0.5),
        0 30px 60px rgba(0,0,0,0.7);
}

.button-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    margin-top: 40px;
}

input[type="button"] {
    background: linear-gradient(45deg, #ff4757, #ff3742);
    color: white;
    border: none;
    padding: 18px 30px;
    border-radius: 50px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow:
        0 10px 30px rgba(255, 71, 87, 0.4),
        0 0 20px rgba(255,255,255,0.2);
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
    overflow: hidden;
    font-family: 'Fredoka One', cursive;
}

input[type="button"]:nth-child(1) { background: linear-gradient(45deg, #ff4757, #ff3742); box-shadow: 0 10px 30px rgba(255, 71, 87, 0.4); }
input[type="button"]:nth-child(2) { background: linear-gradient(45deg, #2ed573, #1dd1a1); box-shadow: 0 10px 30px rgba(46, 213, 115, 0.4); }
input[type="button"]:nth-child(3) { background: linear-gradient(45deg, #a55eea, #8854d0); box-shadow: 0 10px 30px rgba(165, 94, 234, 0.4); }
input[type="button"]:nth-child(4) { background: linear-gradient(45deg, #ffa502, #ff6348); box-shadow: 0 10px 30px rgba(255, 165, 2, 0.4); }
input[type="button"]:nth-child(5) { background: linear-gradient(45deg, #3742fa, #2f3542); box-shadow: 0 10px 30px rgba(55, 66, 250, 0.4); }
input[type="button"]:nth-child(6) { background: linear-gradient(45deg, #1dd1a1, #10ac84); box-shadow: 0 10px 30px rgba(29, 209, 161, 0.4); }
input[type="button"]:nth-child(7) { background: linear-gradient(45deg, #ff6b9d, #ff5252); box-shadow: 0 10px 30px rgba(255, 107, 157, 0.4); }

input[type="button"]:hover {
    transform: translateY(-10px) scale(1.1) rotateZ(2deg);
    box-shadow:
        0 20px 50px rgba(0,0,0,0.5),
        0 0 30px rgba(255,255,255,0.5);
    filter: brightness(1.2);
}

input[type="button"]:active {
    transform: translateY(-5px) scale(1.05);
}

input[type="button"]::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.7s;
}

input[type="button"]:hover::before {
    left: 100%;
}

@media (max-width: 768px) {
    h1 { font-size: 2.5em; }
    #myCanvas { width: 90%; height: auto; }
    input[type="button"] { padding: 15px 20px; font-size: 16px; }
}