/* Card Container */
.card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease;
}

.card:hover {
  box-shadow: var(--shadow-md);
}

/* Card Sections */
.card-header {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-heading);
  margin: 0;
}

.card-body {
  padding: 1.5rem;
}

.card-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border);
  background-color: var(--bg-tertiary);
}

/* Card Variants */
.card-flat {
  box-shadow: none;
  border: 1px solid var(--border);
}

.card-elevated {
  box-shadow: var(--shadow-lg);
}

/* Stat Card */
.stat-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-heading);
  line-height: 1;
}

.stat-change {
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.stat-change.positive {
  color: var(--success);
}

.stat-change.negative {
  color: var(--error);
}

/* Card Grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.5rem;
}

@media (max-width: 768px) {
  .card-grid {
    grid-template-columns: 1fr;
  }
}