:root {
    --bg-color: #0f0f13;
    --text-color: #e0e0e0;
    --primary-color: #6c5ce7;
    --secondary-color: #a29bfe;
    --panel-bg: rgba(255, 255, 255, 0.05);
    --panel-border: rgba(255, 255, 255, 0.1);
    --font-family: 'Outfit', sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-family);
    overflow: hidden;
    height: 100vh;
    width: 100vw;
}

.container {
    position: relative;
    width: 100%;
    height: 100%;
}

canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.controls {
    position: absolute;
    top: 20px;
    left: 20px;
    background: var(--panel-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 24px;
    border-radius: 16px;
    border: 1px solid var(--panel-border);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    width: 300px;
    transition: transform 0.3s ease;
}

.controls:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.5);
}

h1 {
    font-weight: 600;
    font-size: 1.5rem;
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 0.5px;
}

.control-group {
    margin-bottom: 20px;
}

label {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 8px;
    color: rgba(255, 255, 255, 0.7);
}

input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    outline: none;
    margin-bottom: 8px;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s;
}

input[type="range"]::-webkit-slider-thumb:hover {
    background: var(--secondary-color);
    transform: scale(1.1);
}

#speed-value {
    font-size: 0.9rem;
    color: var(--secondary-color);
    float: right;
}

button {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    border-radius: 8px;
    color: white;
    font-family: var(--font-family);
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.2s;
}

button:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

button:active {
    transform: translateY(0);
}

.formula-container {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--panel-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 16px 32px;
    border-radius: 16px;
    border: 1px solid var(--panel-border);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    pointer-events: none;
    user-select: none;
}

.formula {
    display: flex;
    gap: 24px;
    color: var(--text-color);
    font-family: 'Times New Roman', serif;
    font-style: italic;
    font-size: 1.2rem;
    letter-spacing: 1px;
}

.formula span {
    background: linear-gradient(135deg, #fff, #a29bfe);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 2px 10px rgba(108, 92, 231, 0.3);
}