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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    height: 100vh;
    background: radial-gradient(circle at top left, #0f2027, #203a43, #2c5364, #1e3c72);
    background-size: 600% 600%;
    animation: bgAnimation 25s ease infinite;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    color: #ffffff;
    position: relative;
}

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

.wall {
    position: absolute;
    width: 100%;
    height: 100vh;
    background-image:
        linear-gradient(90deg, rgba(0, 255, 255, 0.07) 1px, transparent 1px),
        linear-gradient(rgba(0, 255, 255, 0.07) 1px, transparent 1px);
    background-size: 60px 60px;
    z-index: 0;
    animation: moveWall 40s linear infinite;
}

@keyframes moveWall {
    0% { background-position: 0 0; }
    100% { background-position: 300px 300px; }
}

#app {
    position: relative;
    z-index: 2;
    padding: 60px 50px;
    background: rgba(0, 0, 0, 0.55);
    border-radius: 30px;
    backdrop-filter: blur(20px);
    box-shadow: 0 0 50px #00fff7, 0 0 100px #00fff7;
    text-align: center;
    animation: fadeZoom 1.5s ease-in-out;
}

@keyframes fadeZoom {
    0% { opacity: 0; transform: scale(0.8); }
    100% { opacity: 1; transform: scale(1); }
}

h1 {
    font-size: 48px;
    font-weight: bold;
    color: #00fff7;
    margin-bottom: 30px;
    text-shadow: 0 0 15px #00fff7, 0 0 35px #00fff7;
    animation: pulseGlow 3s ease-in-out infinite;
}

@keyframes pulseGlow {
    0% { text-shadow: 0 0 15px #00fff7; }
    50% { text-shadow: 0 0 35px #00fff7, 0 0 15px #00fff7; }
    100% { text-shadow: 0 0 15px #00fff7; }
}

canvas {
    border: 6px solid;
    border-image: linear-gradient(45deg, #00f2fe, #4facfe) 1;
    border-radius: 25px;
    background-color: #000;
    margin-bottom: 30px;
    box-shadow: 0 0 30px #00ffff;
    transition: transform 0.5s ease, box-shadow 0.5s ease;
}

canvas:hover {
    transform: scale(1.08) rotate(1deg);
    box-shadow: 0 0 50px #00ffff, 0 0 20px #00ffff inset;
}

.controls {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 25px;
    margin-top: 30px;
}

button {
    padding: 14px 40px;
    font-size: 20px;
    font-weight: bold;
    border: none;
    border-radius: 50px;
    background: transparent;
    color: #00fff7;
    border: 2px solid #00fff7;
    box-shadow: 0 0 20px #00fff7;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    z-index: 1;
    transition: all 0.4s ease;
}

button::before {
    content: '';
    position: absolute;
    top: -100%;
    left: -100%;
    width: 300%;
    height: 300%;
    background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, transparent 70%);
    animation: shinyEffect 6s linear infinite;
    z-index: 0;
    opacity: 0.5;
}

@keyframes shinyEffect {
    0% { transform: translate(0%, 0%); }
    100% { transform: translate(100%, 100%); }
}

button:hover {
    transform: scale(1.15);
    background-color: rgba(0, 255, 255, 0.2);
    color: #ffffff;
    box-shadow: 0 0 30px #00ffff, 0 0 10px #00ffff inset;
    border-color: #00ffff;
}