:root {

    --bg-main: #1a1a1a;
    --bg-secondary: #222222;
    --bg-panel: #2a2a2a;
    
    --text-main: #e0e0e0;
    --text-heading: #ffffff;
    --text-muted: #aaaaaa;

    --primary-btn-bg: #2c3e50;
    --primary-btn-hover: #34495e;
    --primary-btn-text: #ffffff;


    --p0-color: #ff4444;
    --p1-color: #4444ff;


    --border-dark: #333333;
    --border-medium: #444444;
    --border-light: #555555;

    --highlight-gold: gold;
    --highlight-move: rgba(100, 200, 255, 0.6);
    --highlight-select: rgba(255, 255, 0, 0.4);

    --cell-size: 50px;
    --border-radius: 4px;
    --spacing-sm: 10px;
    --spacing-md: 20px;

    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: var(--font-family);
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
}

h1, h2, h3 {
    color: var(--text-heading);
    margin-bottom: var(--spacing-md);
    font-weight: 300;
    letter-spacing: 2px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

button {
    padding: 12px 25px;
    font-size: 16px;
    cursor: pointer;
    background-color: var(--primary-btn-bg);
    color: var(--primary-btn-text);
    border: none;
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0,0,0,0.3);
}

button:hover {
    background-color: var(--primary-btn-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 8px rgba(0,0,0,0.4);
}

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

input {
    padding: 10px;
    margin: 5px 0;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-light);
    background: #fff;
    color: #333;
}

.controls { 
    margin-top: 30px; 
}

.container {
    background: white;
    color: #333;
}