body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    color: #333;
}

.container {
    text-align: center;
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    max-width: 500px;
    width: 90%;
}

h1 {
    margin-top: 0;
    color: #764ba2;
    font-size: 2.5rem;
}

.joke-card {
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 1.5rem 0;
    padding: 1rem;
    border: 2px dashed #ddd;
    border-radius: 10px;
    background-color: #f9f9f9;
}

#joke-text {
    font-size: 1.2rem;
    line-height: 1.5;
    font-style: italic;
}

button {
    background-color: #764ba2;
    color: white;
    border: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    border-radius: 50px;
    cursor: pointer;
    transition: transform 0.2s, background-color 0.2s;
    font-weight: bold;
}

button:hover {
    background-color: #5a377d;
    transform: scale(1.05);
}

button:active {
    transform: scale(0.95);
}

button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}