body {
  font-family: 'Segoe UI', sans-serif;
  font-size: 13px;
  background-color: #f8f9fa;
}

/* Sidebar */
.sidebar {
  height: 100vh;
  width: 230px;
  background: #1f2a44;
  color: white;
  position: fixed;
  top: 0;
  left: 0;
  overflow-y: auto;
  transition: all 0.3s ease;
  z-index: 1050;
}

.sidebar .nav-link {
  color: #dcdcdc;
  padding: 6px 16px;
  border-radius: 6px;
  margin: 3px 8px;
  font-size: 12px;
}

.sidebar .nav-link:hover,
.sidebar .nav-link.active {
  background: #4a5fc1;
  color: #fff;
}

/* Overlay */
.overlay {
  position: fixed;
  top: 0; left: 0;
  right: 0; bottom: 0;
  background: rgba(0,0,0,0.4);
  z-index: 1040;
  display: none;
}
.overlay.show { display: block; }

/* Topbar */
.topbar {
  background: white;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  padding: 6px 15px;
  position: sticky;
  top: 0;
  z-index: 999;
}

/* Content */
.content {
  margin-left: 230px;
  padding: 15px;
  transition: all 0.3s ease;
  font-size: 13px;
}

/* Responsive */
@media (max-width: 992px) {
  .sidebar { left: -230px; }
  .sidebar.active { left: 0; }
  .content { margin-left: 0; }
}

/* Cards */
.card {
  border: none;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  padding: 10px;
}
.card h3 { font-size: 16px; margin: 0; }
.card h6 { font-size: 11px; color: #666; }