body {
     background-color: #ffffff;
 }

 .glass-card {
     background: rgba(255, 255, 255, 0.7);
     backdrop-filter: blur(16px);
     -webkit-backdrop-filter: blur(16px);
     border: 1px solid rgba(255, 255, 255, 0.4);
     box-shadow: 0 10px 40px -10px rgba(79, 70, 229, 0.1);
 }

 .text-gradient {
     background-clip: text;
     -webkit-background-clip: text;
     -webkit-text-fill-color: transparent;
     background-image: linear-gradient(to right, #4f46e5, #9333ea, #f97316);
 }

 .hover-lift {
     transition: transform 0.3s ease, box-shadow 0.3s ease;
 }

 .hover-lift:hover {
     transform: translateY(-5px);
     box-shadow: 0 20px 40px -10px rgba(147, 51, 234, 0.2);
 }

 /* Floating TOC Styles */
 #toc-container {
     position: fixed;
     bottom: 40px;
     left: 40px;
     z-index: 9999;
     font-family: '"Plus Jakarta Sans"', sans-serif;
 }

 #toc-btn {
     background: linear-gradient(135deg, #4f46e5, #9333ea);
     color: white;
     border-radius: 9999px;
     padding: 12px 24px;
     display: flex;
     align-items: center;
     gap: 10px;
     box-shadow: 0 8px 25px rgba(147, 51, 234, 0.4);
     cursor: pointer;
     transition: all 0.3s ease;
     font-weight: 600;
     font-size: 14px;
     border: none;
     outline: none;
 }

 #toc-btn:hover {
     transform: scale(1.05);
 }

 #toc-menu {
     position: absolute;
     bottom: 60px;
     left: 0;
     width: 280px;
     max-height: 400px;
     overflow-y: auto;
     background: rgba(255, 255, 255, 0.85);
     backdrop-filter: blur(12px);
     -webkit-backdrop-filter: blur(12px);
     border: 1px solid rgba(147, 51, 234, 0.2);
     border-radius: 16px;
     padding: 20px 0;
     box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
     opacity: 0;
     transform: translateY(20px);
     pointer-events: none;
     transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
 }

 #toc-menu.active {
     opacity: 1;
     transform: translateY(0);
     pointer-events: auto;
 }

 /* Custom Scrollbar for TOC */
 #toc-menu::-webkit-scrollbar {
     width: 6px;
 }

 #toc-menu::-webkit-scrollbar-track {
     background: transparent;
 }

 #toc-menu::-webkit-scrollbar-thumb {
     background: #d8b4fe;
     border-radius: 10px;
 }

 .toc-link {
     display: flex;
     align-items: center;
     padding: 10px 20px;
     color: #4b5563;
     text-decoration: none;
     font-size: 14px;
     font-weight: 500;
     transition: all 0.2s;
 }

 .toc-link:hover {
     background: rgba(147, 51, 234, 0.05);
     color: #9333ea;
 }

 .toc-dot {
     width: 8px;
     height: 8px;
     border-radius: 50%;
     background: transparent;
     margin-right: 12px;
     transition: all 0.3s ease;
     flex-shrink: 0;
 }

 .toc-link.active .toc-dot {
     background: #9333ea;
     box-shadow: 0 0 8px rgba(147, 51, 234, 0.6);
 }

 .toc-link.active {
     color: #9333ea;
     font-weight: 700;
     background: rgba(147, 51, 234, 0.05);
 }