body {
    font-family: Arial, sans-serif;
    background: #f7f7f7;
}

.container {
    width: 760px;
    margin: auto;
    background: white;
    padding: 20px;
    margin-top: 30px;
    border-radius: 8px;
    box-shadow: 0 0 12px #ccc;
}

input, textarea {
    width: 100%;
    padding: 10px;
    margin: 8px 0;
    box-sizing: border-box;
}

textarea {
    height: 120px;
}

button {
    padding: 10px 15px;
    background: #111;
    color: white;
    border: none;
    cursor: pointer;
    margin-right: 8px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

th, td {
    border: 1px solid #ddd;
    padding: 8px;
}
.msg { color: red; margin-top: 10px; }

.notes {
    margin-top: 16px;
    font-size: 13px;
    color: #555;
}

.notes code {
    display: block;
    background: #f1f1f1;
    padding: 6px;
    margin-top: 6px;
    border-radius: 4px;
    font-size: 12px;
}