body {
  font-family: Arial;
  margin: 0;
  background: #0B0B0B;
  color: #fff;
}

.topbar {
  background: #0F3D2E;
  padding: 15px;
  display: flex;
  justify-content: space-between;
}

button {
  background: #00A86B;
  border: none;
  padding: 8px 12px;
  margin: 5px;
  cursor: pointer;
}

section {
  display: none;
  padding: 20px;
}

section.active {
  display: block;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, 250px);
  gap: 15px;
}

.card {
  background: #111;
  padding: 10px;
  border-radius: 8px;
}

.card img {
  width: 100%;
  height: 150px;
  object-fit: cover;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  color: #000;
}

th {
  background: #0F3D2E;
  color: white;
}

td, th {
  border: 1px solid #ccc;
  padding: 5px;
}

.totals {
  margin-top: 20px;
  text-align: right;
}