body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #1a1a1a;
    color: #f0f0f0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    max-width: 800px;
    width: 100%;
    padding: 20px;
    box-sizing: border-box;
    background-color: #2a2a2a;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
}

.canvas-container {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
}

canvas {
    display: block;
    width: 100%;
    height: auto;
    border: 2px solid #4a4a4a;
    border-radius: 5px;
}

.controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 600px;
    margin: 10px auto 0;
    padding: 0 10px;
    box-sizing: border-box;
}

button {
    font-size: 18px;
    padding: 8px 15px;
    background-color: rgba(58, 58, 58, 0.7);
    color: #f0f0f0;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: rgba(74, 74, 74, 0.9);
}

#prevShader {
    left: 0;
}

#nextShader {
    right: 0;
}

.shader-info {
    text-align: center;
    flex-grow: 1;
    margin-top: 10px;
}

#shaderName {
    font-size: 24px;
    font-weight: bold;
    color: #00aaff;
}

#shaderExplanation, #webglExplanation {
    margin-top: 30px;
    text-align: left;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

#webglExplanation h3 {
    text-align: center;
    color: #00aaff;
    font-size: 22px;
}

#webglExplanation ul {
    padding-left: 20px;
}

a {
    color: #00aaff;
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: #66ccff;
    text-decoration: underline;
}

pre {
    background-color: #3a3a3a;
    padding: 10px;
    border-radius: 5px;
    overflow-x: auto;
}

code {
    font-family: 'Courier New', Courier, monospace;
    font-size: 14px;
    color: #e0e0e0;
}

h4 {
    color: #00aaff;
    margin-bottom: 5px;
}