body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f7f6;
    display: flex;
    justify-content: center;
    padding-top: 50px;
}

.container {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    width: 350px;
    text-align: center;
}

h2 { color: #333; }

.calendar-section, .input-section {
    margin-bottom: 20px;
}

input[type="date"], input[type="text"] {
    width: 100%;
    padding: 10px;
    margin-top: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    box-sizing: border-box;
}

button {
    width: 100%;
    padding: 10px;
    margin-top: 10px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover { background-color: #45a049; }

.list-section {
    text-align: left;
    margin-top: 20px;
    border-top: 1px solid #eee;
}

ul { list-style: none; padding: 0; }
li {
    padding: 8px;
    border-bottom: 1px solid #f9f9f9;
    font-size: 0.9rem;
    color: #555;
}