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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #333;
}

.container {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    text-align: center;
    max-width: 500px;
    width: 90%;
}

h1 {
    color: #667eea;
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

p {
    margin-bottom: 1.5rem;
    line-height: 1.6;
    color: #666;
}

.card {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 12px;
    margin: 1.5rem 0;
    text-align: left;
}

.card h2 {
    color: #764ba2;
    margin-bottom: 0.8rem;
    font-size: 1.2rem;
}

.card ul {
    list-style: none;
    padding-left: 0;
}

.card li {
    padding: 0.4rem 0;
    color: #555;
}

button {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 12px 32px;
    font-size: 1rem;
    border-radius: 50px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    margin: 1rem 0;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

button:active {
    transform: translateY(0);
}

#counter {
    font-weight: bold;
    color: #667eea;
    margin-top: 0.5rem;
}