body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: #f4f4f9;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
}

.container {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 600px;
}

h1 {
    color: #1a1a1a;
    text-align: center;
    margin-bottom: 10px;
}

p {
    text-align: center;
    color: #666;
    margin-bottom: 30px;
}

#greeting-form {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
}

#greeting-input {
    flex-grow: 1;
    padding: 10px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

#greeting-input:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
}

button {
    padding: 10px 20px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

button:hover {
    background-color: #0056b3;
}

.greetings-container h2 {
    border-bottom: 1px solid #eee;
    padding-bottom: 10px;
    margin-bottom: 20px;
    color: #1a1a1a;
}

#greetings-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

#greetings-list li {
    background-color: #fafafa;
    padding: 15px;
    border: 1px solid #eee;
    border-radius: 5px;
    margin-bottom: 10px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.error {
    background-color: #f8d7da;
    color: #721c24;
    padding: 10px;
    border: 1px solid #f5c6cb;
    border-radius: 5px;
    margin-bottom: 20px;
    display: none; /* Hidden by default */
}