body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: #f4f6f9;
    margin: 0;
    padding: 0;
}

.container {
    width: 80%;
    margin: 40px auto;
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

h1, h2, h3 {
    margin-top: 0;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

thead {
    background-color: #2c3e50;
    color: white;
}

th, td {
    padding: 12px;
    text-align: left;
}

tr:nth-child(even) {
    background-color: #f2f2f2;
}

input {
    padding: 6px;
    border-radius: 5px;
    border: 1px solid #ccc;
}

button {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 8px 14px;
    border-radius: 6px;
    cursor: pointer;
    transition: 0.2s;
}

button:hover {
    background-color: #2980b9;
}

a {
    text-decoration: none;
    color: #3498db;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}