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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 50%, #7e22ce 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.game-container {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    padding: 30px;
    max-width: 600px;
}

h1 {
    color: #333;
    text-align: center;
    margin-bottom: 10px;
    font-size: 2.5em;
}

.game-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 10px;
}

.stat {
    text-align: center;
}

.stat-label {
    color: #666;
    font-size: 0.9em;
    margin-bottom: 5px;
}

.stat-value {
    color: #1e3c72;
    font-size: 2em;
    font-weight: bold;
}

#gameCanvas {
    display: block;
    background: linear-gradient(180deg, #87ceeb 0%, #ffffff 100%);
    border-radius: 10px;
    box-shadow: inset 0 5px 15px rgba(0, 0, 0, 0.1);
    cursor: none;
}

.controls {
    margin-top: 20px;
    padding: 15px;
    background: #fff3cd;
    border-radius: 10px;
    border-left: 4px solid #ffc107;
}

.controls h3 {
    color: #856404;
    margin-bottom: 10px;
    font-size: 1.2em;
}

.controls p {
    color: #856404;
    margin: 5px 0;
}

.back-link {
    margin-top: 20px;
    text-align: center;
}

.back-link a {
    color: #1e3c72;
    text-decoration: none;
    font-weight: bold;
    padding: 10px 20px;
    background: #f8f9fa;
    border-radius: 5px;
    display: inline-block;
    transition: background 0.3s;
}

.back-link a:hover {
    background: #e9ecef;
}

.game-over {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.9);
    color: white;
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    display: none;
    z-index: 1000;
}

.game-over h2 {
    font-size: 3em;
    margin-bottom: 20px;
    color: #ff6b6b;
}

.game-over p {
    font-size: 1.5em;
    margin-bottom: 30px;
}

.game-over button {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 15px 40px;
    font-size: 1.2em;
    border-radius: 10px;
    cursor: pointer;
    transition: background 0.3s;
}

.game-over button:hover {
    background: #45a049;
}