@keyframes flicker {
     0%, 18%, 22%, 25%, 53%, 57%, 100% {
       text-shadow:
         0 0 4px var(--glow-color),
         0 0 11px var(--glow-color),
         0 0 19px var(--glow-color),
         0 0 40px var(--glow-color),
         0 0 80px var(--glow-color),
         0 0 90px var(--glow-color);
       opacity: 1;
     }
     20%, 24%, 55% {
       text-shadow: none;
       opacity: 0.8;
     }
 }
   
 @keyframes glitch {
     0% { transform: translate(0); }
     20% { transform: translate(-3px, 3px); }
     40% { transform: translate(-3px, -3px); }
     60% { transform: translate(3px, 3px); }
     80% { transform: translate(3px, -3px); }
     100% { transform: translate(0); }
 }
   
 @keyframes fadeIn {
     from { opacity: 0; transform: translateY(20px); }
     to { opacity: 1; transform: translateY(0); }
 }
 
 @keyframes animated-grid {
     0% { background-position: 0 0; }
     100% { background-position: 30px 30px; }
 }
 
 @keyframes pulse-border {
     0% {
         border-color: var(--border-color);
         box-shadow: 0 0 20px rgba(0,0,0,0.5), 0 0 10px var(--shadow-color-faded);
     }
     50% {
         border-color: var(--primary-color);
         box-shadow: 0 0 20px rgba(0,0,0,0.5), 0 0 20px var(--shadow-color);
     }
     100% {
         border-color: var(--border-color);
         box-shadow: 0 0 20px rgba(0,0,0,0.5), 0 0 10px var(--shadow-color-faded);
     }
 }
 
 :root {
     --bg-color: #0a0a0a;
     --text-color: #f0f0f0;
     --primary-color: #ffffff;
     --secondary-color: #888;
     --card-bg-color: rgba(20, 20, 20, 0.75);
     --border-color: rgba(255, 255, 255, 0.15);
     --shadow-color: rgba(255, 255, 255, 0.1);
     --shadow-color-faded: rgba(255, 255, 255, 0.05);
     --glow-color: #ffffff;
     --primary-hover-color: #cccccc;
     --grid-color: rgba(255, 255, 255, 0.05);
 }
 
 body:not(.dark-mode) {
     --bg-color: #f4f4f4;
     --text-color: #1a1a1a;
     --primary-color: #000000;
     --secondary-color: #555555;
     --card-bg-color: rgba(255, 255, 255, 0.75);
     --border-color: rgba(0, 0, 0, 0.1);
     --shadow-color: rgba(0, 0, 0, 0.1);
     --shadow-color-faded: rgba(0, 0, 0, 0.05);
     --glow-color: #333333;
     --primary-hover-color: #333333;
     --grid-color: rgba(0, 0, 0, 0.05);
 }
   
 * {
     margin: 0;
     padding: 0;
     box-sizing: border-box;
 }
   
 body {
     font-family: 'Poppins', sans-serif;
     background-color: var(--bg-color);
     color: var(--text-color);
     transition: background-color 0.3s ease, color 0.3s ease;
     -webkit-font-smoothing: antialiased;
     -moz-osx-font-smoothing: grayscale;
     background-image:
         linear-gradient(var(--grid-color) 1px, transparent 1px),
         linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
     background-size: 30px 30px;
     animation: animated-grid 2s linear infinite;
     overflow-x: hidden;
 }
   
 .main-header {
     position: fixed;
     top: 0;
     left: 0;
     width: 100%;
     background-color: var(--bg-color);
     backdrop-filter: blur(10px);
     -webkit-backdrop-filter: blur(10px);
     border-bottom: 1px solid var(--border-color);
     z-index: 1000;
 }
   
 .navbar {
     display: flex;
     justify-content: space-between;
     align-items: center;
     max-width: 1200px;
     margin: 0 auto;
     padding: 1rem 1.5rem;
 }
   
 .nav-brand a {
     font-family: 'Roboto Mono', monospace;
     font-size: 1.5rem;
     font-weight: 700;
     color: var(--primary-color);
     text-decoration: none;
     text-shadow: 0 0 5px var(--glow-color);
     transition: text-shadow 0.3s ease, transform 0.3s ease;
 }
   
 .nav-brand a:hover {
     text-shadow: 0 0 15px var(--glow-color);
     animation: glitch 0.2s linear;
 }
   
 .nav-options {
     display: flex;
     align-items: center;
     gap: 1.5rem;
 }
   
 .lang-btn {
     background: none;
     border: none;
     color: var(--secondary-color);
     cursor: pointer;
     font-size: 0.9rem;
     font-weight: 600;
     transition: color 0.2s ease, text-shadow 0.2s ease;
     font-family: 'Roboto Mono', monospace;
 }
   
 .lang-btn:hover, .lang-btn.active {
     color: var(--primary-color);
     text-shadow: 0 0 5px var(--glow-color);
 }
   
 .lang-divider {
     color: var(--border-color);
 }
   
 .theme-btn {
     background: none;
     border: none;
     cursor: pointer;
     color: var(--primary-color);
     transition: transform 0.2s ease, text-shadow 0.2s ease;
 }
   
 .theme-btn:hover {
     transform: scale(1.1);
     text-shadow: 0 0 8px var(--glow-color);
 }
   
 .theme-btn svg {
     width: 24px;
     height: 24px;
 }
   
 .moon { display: none; }
 body:not(.dark-mode) .moon { display: block; }
 body:not(.dark-mode) .sun { display: none; }
 body.dark-mode .sun { display: none; }
 body.dark-mode .moon { display: block; }
 
 main {
     padding: 8rem 1.5rem 4rem;
     max-width: 900px;
     margin: 0 auto;
 }
   
 section {
     padding: 4rem 0;
     text-align: center;
     opacity: 0;
     transform: translateY(30px);
     transition: opacity 0.6s ease-out, transform 0.6s ease-out;
 }
   
 section.visible {
     opacity: 1;
     transform: translateY(0);
 }
   
 #hero {
     min-height: 60vh;
     display: flex;
     flex-direction: column;
     justify-content: center;
     padding-top: 0;
 }
   
 .hero-content h1 {
     font-size: clamp(2.5rem, 5vw, 4.5rem);
     font-weight: 800;
     color: var(--text-color);
     text-transform: uppercase;
 }
   
 .hero-content .subtitle {
     font-family: 'Roboto Mono', monospace;
     font-size: clamp(1.2rem, 3vw, 1.8rem);
     color: var(--primary-color);
     font-weight: 700;
     margin-top: 0.5rem;
     animation: flicker 4s linear infinite;
 }
 
 body:not(.dark-mode) .hero-content .subtitle {
     animation: none;
     text-shadow: 0 0 1px var(--glow-color);
 }
   
 .hero-content .description {
     font-size: 1.1rem;
     color: var(--secondary-color);
     max-width: 600px;
     margin: 1rem auto 0;
 }
   
 .cta-button {
     display: inline-block;
     background-color: transparent;
     color: var(--primary-color);
     padding: 0.8rem 2rem;
     border: 2px solid var(--primary-color);
     border-radius: 4px;
     text-decoration: none;
     font-weight: 700;
     font-family: 'Roboto Mono', monospace;
     margin-top: 2rem;
     transition: all 0.3s ease;
     box-shadow: 0 0 10px var(--shadow-color), inset 0 0 5px var(--shadow-color);
     text-shadow: 0 0 5px var(--glow-color);
 }
   
 .cta-button:hover {
     background-color: var(--primary-color);
     color: var(--bg-color);
     box-shadow: 0 0 25px var(--shadow-color), inset 0 0 10px var(--shadow-color);
     text-shadow: none;
 }
   
 .interactive-card {
     background-color: var(--card-bg-color);
     border-radius: 8px;
     padding: 3rem;
     margin-bottom: 4rem;
     position: relative;
     overflow: hidden;
     border: 1px solid var(--border-color);
     box-shadow: 0 0 20px rgba(0,0,0,0.5);
     backdrop-filter: blur(5px);
     animation: pulse-border 4s ease-in-out infinite;
 }
   
 .interactive-card::before {
     content: '';
     position: absolute;
     top: var(--y);
     left: var(--x);
     transform: translate(-50%, -50%);
     width: 400px;
     height: 400px;
     background: radial-gradient(circle, var(--primary-color) 0%, rgba(0,0,0,0) 60%);
     opacity: 0.1;
     transition: opacity 0.3s;
     pointer-events: none;
 }
   
 #about h2, #projects h2 {
     font-size: 2.5rem;
     font-weight: 800;
     margin-bottom: 1.5rem;
     text-transform: uppercase;
     color: var(--primary-color);
     text-shadow: 0 0 8px var(--glow-color);
 }
 
 body:not(.dark-mode) #about h2,
 body:not(.dark-mode) #projects h2 {
     animation: none;
     text-shadow: none;
 }
   
 #about p {
     font-size: 1.1rem;
     line-height: 1.8;
     color: var(--secondary-color);
     max-width: 700px;
     margin: 0 auto;
 }
   
 .project-grid {
     display: grid;
     grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
     gap: 2rem;
     text-align: left;
     margin-top: 3rem;
 }
   
 .project-card {
     background-color: var(--card-bg-color);
     border-radius: 4px;
     text-decoration: none;
     color: var(--text-color);
     overflow: hidden;
     transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
     display: flex;
     flex-direction: column;
     border: 1px solid var(--border-color);
     backdrop-filter: blur(5px);
     animation: pulse-border 4s ease-in-out infinite;
 }
   
 .project-card:hover {
     transform: translateY(-10px) scale(1.02);
     box-shadow: 0 0 25px var(--shadow-color);
     border-color: var(--primary-color);
     animation-duration: 1.5s;
 }
   
 .project-image {
     width: 100%;
     height: 200px;
     object-fit: cover;
     object-position: top center;
     border-bottom: 1px solid var(--border-color);
     filter: saturate(0.8) contrast(1.1);
     transition: filter 0.3s ease;
 }
 
 body:not(.dark-mode) .project-image {
     filter: saturate(0) contrast(1.1);
 }
   
 .project-card:hover .project-image {
     filter: saturate(1) contrast(1);
 }
   
 .project-info {
     padding: 1.5rem;
     display: flex;
     flex-direction: column;
     flex-grow: 1;
 }
   
 .project-info h3 {
     font-size: 1.5rem;
     font-weight: 700;
     margin-bottom: 0.5rem;
     color: var(--primary-color);
 }
   
 .project-info p {
     font-size: 1rem;
     line-height: 1.6;
     color: var(--secondary-color);
     flex-grow: 1;
     margin-bottom: 1rem;
 }
   
 .tech-list {
     list-style: none;
     display: flex;
     flex-wrap: wrap;
     gap: 0.5rem;
     padding: 0;
     margin-top: auto;
 }
   
 .tech-list li {
     background-color: var(--shadow-color-faded);
     color: var(--primary-color);
     font-family: 'Roboto Mono', monospace;
     font-size: 0.75rem;
     font-weight: 700;
     padding: 0.3rem 0.8rem;
     border-radius: 4px;
     border: 1px solid var(--border-color);
 }
   
 .main-footer {
     text-align: center;
     padding: 2rem 1.5rem;
     border-top: 1px solid var(--border-color);
     color: var(--secondary-color);
     font-family: 'Roboto Mono', monospace;
 }
   
 #chat-widget {
     position: fixed;
     bottom: 2rem;
     right: 2rem;
     z-index: 1001;
 }
   
 #chat-toggle-btn {
     width: 60px;
     height: 60px;
     background-color: var(--card-bg-color);
     color: var(--primary-color);
     border: 2px solid var(--primary-color);
     border-radius: 50%;
     display: flex;
     align-items: center;
     justify-content: center;
     cursor: pointer;
     box-shadow: 0 0 20px var(--shadow-color);
     transition: all 0.3s ease;
 }
   
 #chat-toggle-btn:hover {
     transform: scale(1.1) rotate(15deg);
     background-color: var(--primary-color);
     color: var(--bg-color);
 }
   
 #chat-toggle-btn svg {
     width: 32px;
     height: 32px;
     position: absolute;
     transition: opacity 0.2s, transform 0.2s;
 }
   
 #chat-toggle-btn .close-icon {
     opacity: 0;
     transform: scale(0.7);
 }
   
 #chat-toggle-btn.active .chat-icon {
     opacity: 0;
     transform: scale(0.7);
 }
   
 #chat-toggle-btn.active .close-icon {
     opacity: 1;
     transform: scale(1);
 }
   
 #chat-window {
     position: absolute;
     bottom: calc(100% + 1rem);
     right: 0;
     width: 350px;
     background-color: var(--card-bg-color);
     border-radius: 8px;
     box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
     border: 1px solid var(--border-color);
     overflow: hidden;
     transform-origin: bottom right;
     transition: transform 0.3s ease, opacity 0.3s ease;
     display: flex;
     flex-direction: column;
     backdrop-filter: blur(10px);
 }
   
 #chat-window.hidden {
     opacity: 0;
     transform: scale(0.9);
     pointer-events: none;
 }
   
 .chat-header {
     background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
     padding: 1rem;
     text-align: center;
 }
   
 .chat-header h3 {
     color: var(--bg-color);
     font-size: 1.2rem;
     margin: 0;
 }
 
 body:not(.dark-mode) .chat-header h3 {
     color: var(--bg-color);
 }
   
 .chat-body {
     padding: 1.5rem;
     text-align: center;
     line-height: 1.6;
 }
   
 .chat-body p {
     color: var(--secondary-color);
     margin-bottom: 1rem;
 }
   
 .chat-body .coming-soon {
     font-family: 'Roboto Mono', monospace;
     font-weight: 800;
     font-size: 1.5rem;
     color: var(--primary-color);
     margin-top: 2rem;
     text-shadow: 0 0 5px var(--glow-color);
 }
 
 body:not(.dark-mode) .chat-body .coming-soon {
     animation: none;
     text-shadow: none;
 }
 
 #github-card .project-info {
     display: flex;
     flex-direction: column;
     align-items: center;
     justify-content: center;
     text-align: center;
     gap: 0.5rem;
     height: 100%;
     padding: 1.5rem;
 }
 
 .github-icon {
     display: none;
 }
 
 #github-profile-pic {
     width: 96px;
     height: 96px;
     border-radius: 50%;
     border: 3px solid var(--primary-color, var(--secondary-color));
     margin-bottom: 0.75rem;
     transition: transform 0.3s ease;
 }
 
 #github-card:hover #github-profile-pic {
     transform: scale(1.1);
 }
 
 #github-name {
     font-size: 1.5rem;
     font-weight: 800;
     color: var(--text-color);
     margin: 0;
 }
 
 #github-card .project-info p {
     font-size: 0.95rem;
     max-width: 90%;
 }
 
 #github-card .cta-link {
     display: inline-block;
     margin-top: 1rem;
     padding: 0.6rem 1.2rem;
     background-color: var(--primary-color, var(--primary-color));
     color: var(--bg-color);
     border-radius: 5px;
     font-weight: 600;
     font-size: 0.9rem;
     transition: background-color 0.3s ease, transform 0.2s ease;
 }
 
 #github-card:hover .cta-link {
     background-color: var(--primary-hover-color, var(--secondary-color));
     transform: translateY(-2px);
 }
   
 @media (max-width: 768px) {
     main {
         padding-top: 6rem;
     }
     section {
         padding: 3rem 0;
     }
     .interactive-card {
         padding: 2rem;
     }
     .interactive-card::before {
         display: none;
     }
     #about h2, #projects h2 {
         font-size: 2rem;
     }
     #chat-widget {
         bottom: 1rem;
         right: 1rem;
     }
     #chat-window {
         width: calc(100vw - 2rem);
     }
 }