.offerwall-sidebar {
  background: linear-gradient(145deg, #1a1d3a, #0f1123);
  min-height: 600px;
  border-right: 1px solid rgba(255,255,255,0.1);
}

.sidebar-header {
  padding: 20px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  background: rgba(0,0,0,0.2);
}

.sidebar-header h5 {
  color: #fff;
  font-weight: 600;
  margin: 0;
}

/* Navigation Pills - Vertical */
.nav-sidebar {
  padding: 10px 0;
}

.nav-sidebar .nav-item {
  margin: 0;
}

.nav-sidebar .nav-link {
  color: rgba(255,255,255,0.8);
  padding: 15px 20px;
  margin: 2px 10px;
  border-radius: 8px;
  border: none;
  background: transparent;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.nav-sidebar .nav-link:hover {
  background: rgba(88, 103, 221, 0.2);
  color: #fff;
  transform: translateX(5px);
}

.nav-sidebar .nav-link.active {
  background: linear-gradient(135deg, #5867dd, #667eea);
  color: #fff;
  box-shadow: 0 4px 15px rgba(88, 103, 221, 0.4);
}

/* Nav Link Content */
.nav-link-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-icon {
  font-size: 16px;
  margin-right: 12px;
  width: 20px;
  text-align: center;
}

.nav-text {
  flex: 1;
  font-weight: 500;
}

.nav-arrow {
  font-size: 12px;
  opacity: 0.7;
  transition: transform 0.3s ease;
}

.nav-link:hover .nav-arrow,
.nav-link.active .nav-arrow {
  transform: translateX(3px);
}

/* Content Area */
.offerwall-content {
  background: #fff;
  min-height: 600px;
}

.content-header {
  padding: 25px 30px;
  border-bottom: 2px solid #f8f9fa;
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: #fff;
}

.content-header h4 {
  color: #fff;
  font-weight: 600;
}

.content-header .text-muted {
  color: rgba(255,255,255,0.8) !important;
}

/* Iframe Container */
.iframe-container {
  padding: 0;
  background: #fff;
}

.iframe-container iframe {
  border: none;
  border-radius: 0;
}

/* Mobile Responsive */
@media (max-width: 767.98px) {
  .offerwall-sidebar {
    min-height: auto;
    border-right: none;
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }
  
  .nav-sidebar {
    flex-direction: row;
    overflow-x: auto;
    white-space: nowrap;
    padding: 10px;
  }
  
  .nav-sidebar .nav-item {
    flex-shrink: 0;
  }
  
  .nav-sidebar .nav-link {
    margin: 0 5px;
    padding: 12px 16px;
    min-width: 120px;
    text-align: center;
  }
  
  .nav-link-content {
    flex-direction: column;
    gap: 4px;
  }
  
  .nav-arrow {
    display: none;
  }
  
  .content-header {
    padding: 20px;
  }
}

/* Loading State */
.iframe-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 400px;
  background: #f8f9fa;
}

.iframe-loading i {
  font-size: 24px;
  color: #5867dd;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}