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

body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    color: #fff;
}

.container {
    text-align: center;
    background: rgba(0, 0, 0, 0.3);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.header {
    margin-bottom: 15px;
}

.header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.stats {
    display: flex;
    justify-content: center;
    gap: 30px;
    font-size: 1.2em;
    font-weight: bold;
}

.stats span {
    background: rgba(255, 255, 255, 0.1);
    padding: 5px 15px;
    border-radius: 20px;
}

#gameCanvas {
    border: 3px solid #fff;
    border-radius: 10px;
    background: #87CEEB;
    display: block;
    margin: 0 auto;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.controls {
    margin-top: 15px;
    font-size: 0.9em;
    opacity: 0.8;
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.overlay.hidden {
    display: none;
}

.overlay h2 {
    font-size: 3em;
    margin-bottom: 20px;
    text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.7);
}

.overlay p {
    font-size: 1.3em;
    margin-bottom: 30px;
}

.overlay button {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border: none;
    padding: 15px 40px;
    font-size: 1.2em;
    border-radius: 30px;
    cursor: pointer;
    font-weight: bold;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.overlay button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.overlay button:active {
    transform: translateY(-1px);
}