body { 
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
    margin: 0; 
    padding: 20px;
    background-color: #e0f2f7; /* Light blue background */
    color: #333; 
    line-height: 1.6;
}
.container { 
    max-width: 800px; 
    margin: 40px auto; 
    background: #ffffff; 
    padding: 30px; 
    border-radius: 12px; 
    box-shadow: 0 6px 12px rgba(0,0,0,0.1); /* Softer shadow */
}
h1 { 
    text-align: center; 
    color: #007bff; /* Vibrant blue */
    margin-bottom: 30px;
    font-size: 2.2em;
    border-bottom: 2px solid #007bff;
    padding-bottom: 10px;
}
h2 { 
    color: #0056b3; 
    margin-top: 25px;
    margin-bottom: 15px;
    font-size: 1.6em;
}
table { 
    width: 100%; 
    border-collapse: collapse; 
    margin-top: 20px; 
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    border-radius: 8px;
    overflow: hidden; /* Ensures rounded corners for table */
}
th, td { 
    border: 1px solid #e0e0e0; /* Lighter border */
    padding: 12px 15px; 
    text-align: left; 
}
th { 
    background-color: #f8f8f8; /* Very light grey */
    font-weight: bold;
    color: #555;
}
tr:nth-child(even) {
    background-color: #fdfdfd;
}
tr:hover {
    background-color: #eef7ff; /* Highlight on hover */
}
form { 
    margin-top: 30px; 
    padding: 25px; 
    background-color: #f0f8ff; /* Very light blue form background */
    border-radius: 10px; 
    border: 1px solid #d0e8f2;
}
form label { 
    display: block; 
    margin-bottom: 8px; 
    font-weight: bold; 
    color: #444;
}
form input[type="text"], 
form input[type="number"] { 
    width: calc(100% - 24px); /* Account for padding */
    padding: 12px; 
    margin-bottom: 18px; 
    border: 1px solid #b0d8ea; /* Blueish border */
    border-radius: 6px; 
    box-sizing: border-box; /* Include padding in width */
    font-size: 1em;
}
form button { 
    background-color: #28a745; /* Green button */
    color: white; 
    padding: 12px 25px; 
    border: none; 
    border-radius: 6px; 
    cursor: pointer; 
    font-size: 1.1em;
    transition: background-color 0.3s ease;
}
form button:hover { 
    background-color: #218838; /* Darker green on hover */
}
p.note {
    margin-top: 30px;
    font-size: 0.9em;
    color: #777;
    text-align: center;
    border-top: 1px dashed #e0e0e0;
    padding-top: 20px;
}