:root {
    --bg-color: #0f172a;
    --text-color: #e2e8f0;
    --canvas-bg: #1e293b;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --secondary: #64748b;
    --secondary-hover: #475569;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --accent: #10b981;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 20px;
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    text-align: center;
    max-width: 900px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

h1 {
    margin-top: 0;
    font-weight: 300;
    font-size: 2.5rem;
    letter-spacing: 2px;
    color: var(--text-color);
    text-transform: uppercase;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.1);
}

.description {
    font-size: 1rem;
    color: #94a3b8;
    margin-bottom: 25px;
    line-height: 1.6;
    background: #1e293b;
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid var(--accent);
    text-align: left;
    max-width: 800px;
}

.canvas-wrapper {
    position: relative;
    background-color: #000;
    border-radius: 12px;
    padding: 0;
    box-shadow: 0 15px 35px rgba(0,0,0,0.6);
    margin-bottom: 25px;
    display: inline-block;
    width: 800px;
    height: 600px;
    border: 4px solid var(--canvas-bg);
}

canvas {
    position: absolute;
    top: 0;
    left: 0;
    border-radius: 8px;
    display: block;
}

#bgCanvas {
    z-index: 1;
    background-color: #000;
}

#fgCanvas {
    z-index: 2;
    background-color: transparent;
}

.status-box {
    background-color: #1e293b;
    border: 2px solid var(--primary);
    border-radius: 8px;
    padding: 15px 20px;
    margin-bottom: 25px;
    font-size: 1.1rem;
    color: var(--text-color);
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 800px;
}

.controls {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 25px;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    background-color: #334155;
    color: white;
    box-shadow: 0 4px 6px rgba(0,0,0,0.3);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.btn:hover {
    background-color: #475569;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.4);
}

.btn:active {
    transform: translateY(1px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.btn-primary {
    background-color: var(--primary);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 6px 15px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background-color: var(--secondary);
}

.btn-secondary:hover {
    background-color: var(--secondary-hover);
}

.btn-danger {
    background-color: var(--danger);
}

.btn-danger:hover {
    background-color: var(--danger-hover);
    box-shadow: 0 6px 15px rgba(239, 68, 68, 0.4);
}

.stats {
    font-size: 1.2rem;
    color: #cbd5e1;
    background: rgba(30, 41, 59, 0.8);
    display: inline-block;
    padding: 8px 20px;
    border-radius: 20px;
}

#pointCount {
    font-weight: bold;
    color: var(--accent);
    font-family: monospace;
    font-size: 1.3rem;
}