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

body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.game-container {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    text-align: center;
}

h1 {
    color: #333;
    margin-bottom: 20px;
    font-size: 2.5em;
}

.status {
    font-size: 1.5em;
    margin-bottom: 30px;
    padding: 15px;
    background: #f0f0f0;
    border-radius: 10px;
    color: #333;
    font-weight: bold;
}

.board {
    display: grid;
    grid-template-columns: repeat(3, 100px);
    grid-template-rows: repeat(3, 100px);
    gap: 10px;
    margin: 0 auto 30px;
}

.cell {
    width: 100px;
    height: 100px;
    background: #f8f9fa;
    border: 2px solid #333;
    border-radius: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 3em;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s;
}

.cell:hover:not(.taken) {
    background: #e9ecef;
    transform: scale(1.05);
}

.cell.taken {
    cursor: not-allowed;
}

.cell.x {
    color: #e74c3c;
}

.cell.o {
    color: #3498db;
}

.reset-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 15px 40px;
    font-size: 1.2em;
    border-radius: 10px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.reset-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

.reset-btn:active {
    transform: translateY(0);
}