/* CSS cho giữ dòng tiêu đề và dashboard */

/* Giữ dòng tiêu đề cố định */
thead {
  position: sticky;
  top: 0;
  z-index: 10;
}

th {
  position: sticky;
  top: 0;
}

/* Dashboard báo cáo */
.dashboard {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.card {
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  padding: 16px;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.card-title {
  color: #4b5563;
  font-size: 0.9rem;
  margin-bottom: 8px;
  font-weight: 600;
}

.card-value {
  font-size: 2rem;
  font-weight: 700;
  color: #2563eb;
  margin: 0;
}

.card-sub {
  font-size: 0.85rem;
  color: #6b7280;
  margin-top: 5px;
}

.card.excel {
  border-top: 4px solid #217346;
}

.card.excel .card-value {
  color: #217346;
}

.card.word {
  border-top: 4px solid #2b579a;
}

.card.word .card-value {
  color: #2b579a;
}

.card.powerpoint {
  border-top: 4px solid #d24726;
}

.card.powerpoint .card-value {
  color: #d24726;
}

.card.total {
  border-top: 4px solid #6366f1;
}

.card.total .card-value {
  color: #6366f1;
}

/* Responsive */
@media (max-width: 768px) {
  .dashboard {
    grid-template-columns: repeat(2, 1fr);
  }

  .card-value {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .dashboard {
    grid-template-columns: 1fr;
  }
}