body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f5f5f5;
  color: #2a2a2a;
}
header {
  background: #982600;
  color: white;
  padding: 1rem;
}
nav a {
  color: white;
  margin-right: 1rem;
  text-decoration: none;
}
main {
  padding: 1.5rem;
}
form {
  display: flex;
  justify-content: space-around;
  align-items: flex-start;
}
form label {
  display: flex;
  align-items: center;
}
input,
select {
  width: 100%;
  max-width: 360px;
  padding: 0.5rem;
  margin-top: 0.25rem;
}
button {
  padding: 0.65rem 1rem;
  background: #0066cc;
  border: none;
  color: white;
  cursor: pointer;
  min-width: 120px;
  height: 36px;
}
button:hover {
  background: #005bb5;
}

.missing-invoice {
  background: #ffe4e4;
}
.reviewed-task {
  background: #b9ffb9;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}
th,
td {
  border: 1px solid #ccc;
  padding: 0.65rem;
  text-align: left;
}
.error {
  background: #fce4e4;
  color: #900;
  padding: 1rem;
  margin: 1rem 0;
}
.success {
  background: #e4f7e4;
  color: #080;
  padding: 1rem;
  margin: 1rem 0;
}
footer {
  background: #222;
  color: #ddd;
  padding: 1rem;
  text-align: center;
  margin-top: 1rem;
}