* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #1e1e1e;
    color: #ffffff;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    text-align: center;
}

h1 {
    margin-bottom: 20px;
}

.info {
    display: flex;
    justify-content: space-evenly;
    align-items: center;
    gap: 20px;
    margin-bottom: 15px;
}

.mode-selector {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-bottom: 14px;
    flex-wrap: wrap;
}

.mode-selector span {
    color: #c5cf9e;
    font-weight: bold;
}

.mode-btn {
    background: #2a2a2a;
    color: #fff;
    border: 1px solid #3b3b3b;
}

.mode-btn.active {
    background: #4caf50;
    color: #0e170f;
    border-color: #4caf50;
}

button {
    padding: 8px 14px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
}

button:hover {
    opacity: 0.9;
}

canvas {
    background: #111;
    border: 3px solid #4caf50;
    display: block;
    margin: 0 auto;
}

.instructions {
    margin-top: 12px;
    color: #c5cf9e;
}