body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f8ff; /* Light Alice Blue background for calming effect */
}

header {
    background: #4B9CD3; /* Soft blue header */
    color: #ffffff;
    padding: 10px 0;
    text-align: center;
}

nav ul {
    list-style: none;
    padding: 0;
}

nav ul li {
    display: inline;
    margin: 0 15px;
}

main {
    padding: 20px;
}

h1, h2 {
    margin: 0;
    color: #333; /* Darker text for better readability */
}

form {
    margin-bottom: 20px;
}

input, select {
    padding: 10px;
    margin-right: 10px;
    border: 1px solid #a1d6e8; /* Soft blue border for inputs */
    border-radius: 5px; /* Slightly rounded corners */
}

textarea {
    padding: 10px;
    width: 100%;
    height: 100px;
    margin-top: 10px;
    border: 1px solid #a1d6e8; /* Soft blue border for textarea */
    border-radius: 5px; /* Slightly rounded corners */
}

button {
    padding: 10px 20px;
    background: #4B9CD3; /* Soft blue button */
    color: #ffffff;
    border: none;
    border-radius: 5px; /* Slightly rounded corners */
    cursor: pointer;
}

button:hover {
    background: #357ABD; /* Darker blue on hover */
}

progress {
    display: inline-block;
    width: 100px;
    margin-left: 10px;
}

#calendar {
    margin-top: 20px;
    background: #ffffff; /* White calendar background */
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px; /* Slightly rounded corners */
}

#filterPanel {
    margin-bottom: 20px;
}

#statsPanel {
    margin-top: 20px;
    background: #ffffff; /* White stats panel background */
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px; /* Slightly rounded corners */
}

#timeline {
    margin-top: 20px;
}