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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
}

.container {
    text-align: center;
    padding: 20px;
}

h1 {
    margin-bottom: 20px;
    font-size: 1.8rem;
}

.card-container {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 30px;
}

.card {
    text-decoration: none;
    padding: 40px 30px;
    border-radius: 20px;
    transition: transform 0.3s, box-shadow 0.3s;
    width: 250px;
    text-align: center;
    color: white;
}

.card:hover {
    transform: translateY(-10px);
}

.normal {
    background: linear-gradient(135deg, #2ecc71, #27ae60);
    box-shadow: 0 10px 30px rgba(46,204,113,0.3);
}

.hard {
    background: linear-gradient(135deg, #f39c12, #e67e22);
    box-shadow: 0 10px 30px rgba(243,156,18,0.3);
}

.brutal {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    box-shadow: 0 10px 30px rgba(231,76,60,0.3);
}

.card h2 {
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.card p {
    font-size: 0.9rem;
    opacity: 0.9;
}

.warning {
    margin-top: 50px;
    color: #ff6b6b;
    font-size: 0.8rem;
}

.back-btn {
    display: inline-block;
    margin-top: 30px;
    padding: 12px 25px;
    background: #34495e;
    color: white;
    text-decoration: none;
    border-radius: 10px;
    transition: background 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.back-btn:hover {
    background: #2c3e50;
}

.status-bar {
    margin-top: 20px;
    padding: 10px;
    background: rgba(0,0,0,0.5);
    border-radius: 10px;
    font-size: 0.8rem;
}

.active {
    color: #2ecc71;
}

.inactive {
    color: #e74c3c;
}