/* CSS Variables & Reset */
 :root {
     /* Light Mode */
     --bg-primary: #ffffff;
     --bg-secondary: #f8f9fa;
     --bg-card: rgba(255, 255, 255, 0.8);
     --text-primary: #1a1a2e;
     --text-secondary: #4a4a6a;
     --accent: #6366f1;
     --accent-hover: #4f46e5;
     --accent-glow: rgba(99, 102, 241, 0.3);
     --border: rgba(0, 0, 0, 0.1);
     --glass-bg: rgba(255, 255, 255, 0.6);
     --glass-border: rgba(255, 255, 255, 0.4);
     --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);

     /* Gradients */
     --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
     --gradient-secondary: linear-gradient(135deg, #0ea5e9 0%, #6366f1 100%);
     --gradient-accent: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);

     /* Animation */
     --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
 }

 /* Dark Mode */
 .dark-mode {
     --bg-primary: #0f0f1a;
     --bg-secondary: #1a1a2e;
     --bg-card: rgba(30, 30, 46, 0.8);
     --text-primary: #e2e8f0;
     --text-secondary: #94a3b8;
     --accent: #818cf8;
     --accent-hover: #a5b4fc;
     --accent-glow: rgba(129, 140, 248, 0.3);
     --border: rgba(255, 255, 255, 0.1);
     --glass-bg: rgba(30, 30, 46, 0.6);
     --glass-border: rgba(255, 255, 255, 0.1);
     --shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
 }

 * {
     margin: 0;
     padding: 0;
     box-sizing: border-box;
     font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
 }

 html {
     scroll-behavior: smooth;
 }

 body {
     background-color: var(--bg-primary);
     color: var(--text-primary);
     line-height: 1.6;
     overflow-x: hidden;
     transition: background-color 0.5s ease, color 0.5s ease;
 }

 /* Particle Background */
 #particles-js {
     position: fixed;
     width: 100%;
     height: 100%;
     top: 0;
     left: 0;
     z-index: -1;
     pointer-events: none;
 }

 /* Container */
 .container {
     width: 90%;
     max-width: 1200px;
     margin: 0 auto;
     padding: 0 20px;
 }

 /* Glassmorphism Card */
 .glass-card {
     background: var(--glass-bg);
     backdrop-filter: blur(12px);
     -webkit-backdrop-filter: blur(12px);
     border: 1px solid var(--glass-border);
     border-radius: 24px;
     box-shadow: var(--shadow);
     transition: var(--transition);
 }

 .glass-card:hover {
     transform: translateY(-5px);
     box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
 }

 /* Header */
 header {
     position: fixed;
     top: 0;
     left: 0;
     width: 100%;
     z-index: 1000;
     padding: 15px 0;
     transition: var(--transition);
 }

 header.scrolled {
     background: var(--glass-bg);
     backdrop-filter: blur(16px);
     -webkit-backdrop-filter: blur(16px);
     border-bottom: 1px solid var(--glass-border);
     padding: 10px 0;
 }

 nav {
     display: flex;
     justify-content: space-between;
     align-items: center;
 }

 .logo {
     font-size: 1.8rem;
     font-weight: 800;
     background: var(--gradient-primary);
     -webkit-background-clip: text;
     background-clip: text;
     color: transparent;
     letter-spacing: -0.5px;
     text-decoration: none;
 }

 .nav-links {
     display: flex;
     list-style: none;
     gap: 30px;
 }

 .nav-links a {
     color: var(--text-primary);
     text-decoration: none;
     font-weight: 600;
     font-size: 0.95rem;
     position: relative;
     padding: 5px 0;
     transition: var(--transition);
 }

 .nav-links a::after {
     content: '';
     position: absolute;
     bottom: 0;
     left: 0;
     width: 0;
     height: 2px;
     background: var(--gradient-primary);
     transition: width 0.3s ease;
 }

 .nav-links a:hover::after {
     width: 100%;
 }

 .nav-links a:hover {
     color: var(--accent);
 }

 .nav-controls {
     display: flex;
     align-items: center;
     gap: 15px;
 }

 .theme-toggle {
     background: none;
     border: none;
     color: var(--text-primary);
     font-size: 1.2rem;
     cursor: pointer;
     padding: 8px;
     border-radius: 50%;
     transition: var(--transition);
     display: flex;
     align-items: center;
     justify-content: center;
 }

 .theme-toggle:hover {
     background: var(--bg-secondary);
     transform: rotate(15deg);
 }

 .menu-toggle {
     display: none;
     background: none;
     border: none;
     color: var(--text-primary);
     font-size: 1.5rem;
     cursor: pointer;
 }

 /* Hero Section */
 .hero {
     min-height: 100vh;
     display: flex;
     align-items: center;
     position: relative;
     padding: 100px 0 60px;
 }

 .hero-content {
     display: grid;
     grid-template-columns: 1fr 1fr;
     gap: 50px;
     align-items: center;
 }

 .hero-text {
     z-index: 2;
 }

 .hero-text h1 {
     font-size: 4rem;
     font-weight: 800;
     line-height: 1.1;
     margin-bottom: 15px;
     background: var(--gradient-primary);
     -webkit-background-clip: text;
     background-clip: text;
     color: transparent;
 }

 .hero-text .highlight {
     background: var(--gradient-secondary);
     -webkit-background-clip: text;
     background-clip: text;
     color: transparent;
 }

 .hero-text p {
     font-size: 1.2rem;
     color: var(--text-secondary);
     margin-bottom: 30px;
     max-width: 500px;
 }

 .hero-btns {
     display: flex;
     gap: 15px;
     flex-wrap: wrap;
 }

 .btn {
     padding: 14px 32px;
     border-radius: 12px;
     font-weight: 600;
     font-size: 1rem;
     text-decoration: none;
     display: inline-flex;
     align-items: center;
     gap: 10px;
     transition: var(--transition);
     border: none;
     cursor: pointer;
 }

 .btn-primary {
     background: var(--gradient-primary);
     color: white;
     box-shadow: 0 10px 25px var(--accent-glow);
 }

 .btn-primary:hover {
     transform: translateY(-3px);
     box-shadow: 0 15px 35px var(--accent-glow);
 }

 .btn-outline {
     background: transparent;
     color: var(--text-primary);
     border: 2px solid var(--border);
 }

 .btn-outline:hover {
     background: var(--bg-secondary);
     border-color: var(--accent);
     color: var(--accent);
 }

 .hero-visual {
     position: relative;
     display: flex;
     justify-content: center;
     align-items: center;
 }

 .profile-card {
     width: 300px;
     height: 400px;
     position: relative;
     transform-style: preserve-3d;
     transition: transform 0.1s ease;
 }

 .profile-card-inner {
     width: 100%;
     height: 100%;
     border-radius: 24px;
     overflow: hidden;
     position: relative;
     background: var(--gradient-primary);
     display: flex;
     flex-direction: column;
     justify-content: center;
     align-items: center;
     color: white;
     padding: 30px;
     text-align: center;
 }

 .profile-card-inner::before {
     content: '';
     position: absolute;
     top: 0;
     left: 0;
     width: 100%;
     height: 100%;
     background: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMTAwIiBoZWlnaHQ9IjEwMCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj48Y2lyY2xlIGN4PSI1MCIgY3k9IjUwIiByPSI0MCIgZmlsbD0icmdiYSgyNTUsMjU1LDI1NSwwLjApIiBzdHJva2U9InJnYmEoMjU1LDI1NSwyNTUsMC4xKSIgc3Ryb2tlLXdpZHRoPSIyIi8+PC9zdmc+') center/cover;
     opacity: 0.1;
 }

 .profile-img {
     width: 120px;
     height: 120px;
     border-radius: 50%;
     background: var(--bg-secondary);
     margin-bottom: 20px;
     display: flex;
     align-items: center;
     justify-content: center;
     font-size: 3rem;
     color: var(--accent);
     border: 3px solid rgba(255, 255, 255, 0.3);
 }

 .profile-img img {
     border-radius: 10px;
 }

 .profile-card h3 {
     font-size: 1.5rem;
     margin-bottom: 5px;

 }

 .profile-card p {
     font-size: 0.9rem;
     opacity: 0.8;
 }

 .social-links {
     display: flex;
     gap: 15px;
     margin-top: 20px;
 }

 .social-links a {
     width: 40px;
     height: 40px;
     border-radius: 50%;
     background: rgba(255, 255, 255, 0.2);
     display: flex;
     align-items: center;
     justify-content: center;
     color: white;
     text-decoration: none;
     transition: var(--transition);
 }

 .social-links a:hover {
     background: white;
     color: var(--accent);
     transform: translateY(-3px);
 }

 /* Section Styles */
 section {
     padding: 100px 0;
     position: relative;
 }

 .section-header {
     text-align: center;
     margin-bottom: 60px;
 }

 .section-header h2 {
     font-size: 2.5rem;
     font-weight: 800;
     margin-bottom: 15px;
     background: var(--gradient-primary);
     -webkit-background-clip: text;
     background-clip: text;
     color: transparent;
 }

 .section-header p {
     color: var(--text-secondary);
     max-width: 600px;
     margin: 0 auto;
 }

 /* About Section */
 .about-grid {
     display: grid;
     grid-template-columns: 1fr 1fr;
     gap: 40px;
     align-items: center;
 }

 .about-text h3 {
     font-size: 1.8rem;
     margin-bottom: 20px;
     color: var(--text-primary);
 }

 .about-text p {
     color: var(--text-secondary);
     margin-bottom: 20px;
 }

 .skills-grid {
     display: grid;
     grid-template-columns: repeat(2, 1fr);
     gap: 20px;
     margin-top: 30px;
 }

 .skill-item {
     padding: 20px;
     border-radius: 16px;
     background: var(--bg-card);
     border: 1px solid var(--border);
     transition: var(--transition);
 }

 .skill-item:hover {
     transform: translateY(-5px);
     border-color: var(--accent);
 }

 .skill-header {
     display: flex;
     justify-content: space-between;
     margin-bottom: 10px;
     font-weight: 600;
 }

 .skill-bar {
     height: 8px;
     background: var(--bg-secondary);
     border-radius: 4px;
     overflow: hidden;
 }

 .skill-progress {
     height: 100%;
     background: var(--gradient-primary);
     border-radius: 4px;
     width: 0;
     transition: width 1.5s cubic-bezier(0.22, 0.61, 0.36, 1);
 }

 /* Portfolio Section */
 .portfolio-grid {
     display: grid;
     grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
     gap: 30px;
 }

 .portfolio-item {
     border-radius: 20px;
     overflow: hidden;
     position: relative;
     aspect-ratio: 4/3;
     cursor: pointer;
     transform-style: preserve-3d;
 }

 .portfolio-img {
     width: 100%;
     height: 100%;
     background: var(--gradient-secondary);
     display: flex;
     align-items: center;
     justify-content: center;
     color: white;
     font-size: 3rem;
     transition: transform 0.5s ease;
 }

 .portfolio-overlay {
     position: absolute;
     bottom: 0;
     left: 0;
     width: 100%;
     padding: 25px;
     background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
     color: white;
     transform: translateY(100%);
     transition: transform 0.4s ease;
 }

 .portfolio-item:hover .portfolio-overlay {
     transform: translateY(0);
 }

 .portfolio-item:hover .portfolio-img {
     transform: scale(1.1);
 }

 /* Contact Section */
 .contact-container {
     display: grid;
     grid-template-columns: 1fr 1fr;
     gap: 40px;
 }

 .contact-form {
     padding: 30px;
 }

 .form-group {
     margin-bottom: 20px;
 }

 .form-group label {
     display: block;
     margin-bottom: 8px;
     font-weight: 600;
     color: var(--text-primary);
 }

 .form-control {
     width: 100%;
     padding: 14px 18px;
     border-radius: 12px;
     border: 1px solid var(--border);
     background: var(--bg-card);
     color: var(--text-primary);
     font-size: 1rem;
     transition: var(--transition);
 }

 .form-control:focus {
     outline: none;
     border-color: var(--accent);
     box-shadow: 0 0 0 3px var(--accent-glow);
 }

 textarea.form-control {
     min-height: 150px;
     resize: vertical;
 }

 .contact-info {
     display: flex;
     flex-direction: column;
     justify-content: center;
     padding: 30px;
 }

 .contact-item {
     display: flex;
     align-items: center;
     gap: 15px;
     margin-bottom: 25px;
     padding: 15px;
     border-radius: 12px;
     background: var(--bg-card);
     border: 1px solid var(--border);
     transition: var(--transition);
 }

 .contact-item:hover {
     transform: translateX(5px);
     border-color: var(--accent);
 }

 .contact-icon {
     width: 50px;
     height: 50px;
     border-radius: 12px;
     background: var(--gradient-primary);
     display: flex;
     align-items: center;
     justify-content: center;
     color: white;
     font-size: 1.2rem;
     flex-shrink: 0;
 }

 /* Footer */
 footer {
     padding: 50px 0 30px;
     background: var(--bg-secondary);
     border-top: 1px solid var(--border);
 }

 .footer-content {
     display: flex;
     justify-content: space-between;
     align-items: center;
     flex-wrap: wrap;
     gap: 30px;
 }

 .footer-logo {
     font-size: 1.5rem;
     font-weight: 800;
     background: var(--gradient-primary);
     -webkit-background-clip: text;
     background-clip: text;
     color: transparent;
 }

 .footer-links {
     display: flex;
     gap: 20px;
     list-style: none;
 }

 .footer-links a {
     color: var(--text-secondary);
     text-decoration: none;
     transition: var(--transition);
 }

 .footer-links a:hover {
     color: var(--accent);
 }

 .footer-social {
     display: flex;
     gap: 15px;
 }

 .footer-social a {
     width: 40px;
     height: 40px;
     border-radius: 50%;
     background: var(--bg-card);
     display: flex;
     align-items: center;
     justify-content: center;
     color: var(--text-primary);
     text-decoration: none;
     transition: var(--transition);
 }

 .footer-social a:hover {
     background: var(--accent);
     color: white;
     transform: translateY(-3px);
 }

 .copyright {
     text-align: center;
     margin-top: 30px;
     padding-top: 20px;
     border-top: 1px solid var(--border);
     color: var(--text-secondary);
     font-size: 0.9rem;
 }

 /* Animations */
 @keyframes float {

     0%,
     100% {
         transform: translateY(0);
     }

     50% {
         transform: translateY(-10px);
     }
 }

 .float-animation {
     animation: float 3s ease-in-out infinite;
 }

 @keyframes fadeInUp {
     from {
         opacity: 0;
         transform: translateY(30px);
     }

     to {
         opacity: 1;
         transform: translateY(0);
     }
 }

 .animate-on-scroll {
     opacity: 0;
     transform: translateY(30px);
     transition: opacity 0.6s ease, transform 0.6s ease;
 }

 .animate-on-scroll.visible {
     opacity: 1;
     transform: translateY(0);
 }

 /* Mobile Menu */
 .mobile-menu {
     position: fixed;
     top: 0;
     right: -100%;
     width: 80%;
     max-width: 400px;
     height: 100vh;
     background: var(--bg-card);
     backdrop-filter: blur(20px);
     -webkit-backdrop-filter: blur(20px);
     z-index: 1001;
     padding: 80px 30px 30px;
     transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
     display: flex;
     flex-direction: column;
     gap: 20px;
 }

 .mobile-menu.active {
     right: 0;
 }

 .mobile-menu a {
     color: var(--text-primary);
     text-decoration: none;
     font-size: 1.2rem;
     font-weight: 600;
     padding: 12px 0;
     border-bottom: 1px solid var(--border);
     transition: var(--transition);
 }

 .mobile-menu a:hover {
     color: var(--accent);
     padding-left: 10px;
 }

 .mobile-overlay {
     position: fixed;
     top: 0;
     left: 0;
     width: 100%;
     height: 100%;
     background: rgba(0, 0, 0, 0.5);
     backdrop-filter: blur(5px);
     z-index: 1000;
     opacity: 0;
     visibility: hidden;
     transition: opacity 0.3s ease, visibility 0.3s ease;
 }

 .mobile-overlay.active {
     opacity: 1;
     visibility: visible;
 }

 /* Responsive Design */
 @media (max-width: 992px) {
     .hero-content {
         grid-template-columns: 1fr;
         text-align: center;
     }

     .hero-text h1 {
         font-size: 3rem;
     }

     .hero-text p {
         margin: 0 auto 30px;
     }

     .hero-btns {
         justify-content: center;
     }

     .hero-visual {
         margin-top: 40px;
     }

     .about-grid,
     .contact-container {
         grid-template-columns: 1fr;
     }

     .skills-grid {
         grid-template-columns: 1fr;
     }
 }

 @media (max-width: 768px) {
     .nav-links {
         display: none;
     }

     .menu-toggle {
         display: block;
     }

     .hero-text h1 {
         font-size: 2.5rem;
     }

     .section-header h2 {
         font-size: 2rem;
     }

     .portfolio-grid {
         grid-template-columns: 1fr;
     }

     .footer-content {
         flex-direction: column;
         text-align: center;
     }

     .footer-links,
     .footer-social {
         justify-content: center;
     }
 }

 @media (max-width: 480px) {
     .hero-text h1 {
         font-size: 2rem;
     }

     .hero-text p {
         font-size: 1rem;
     }

     .btn {
         width: 100%;
         justify-content: center;
     }

     .section-header h2 {
         font-size: 1.8rem;
     }
 }

 /* Scroll to Top */
 .scroll-top {
     position: fixed;
     bottom: 30px;
     right: 30px;
     width: 50px;
     height: 50px;
     border-radius: 50%;
     background: var(--gradient-primary);
     color: white;
     border: none;
     cursor: pointer;
     display: flex;
     align-items: center;
     justify-content: center;
     font-size: 1.2rem;
     opacity: 0;
     visibility: hidden;
     transition: var(--transition);
     z-index: 999;
     box-shadow: 0 5px 20px var(--accent-glow);
 }

 .scroll-top.visible {
     opacity: 1;
     visibility: visible;
 }

 .scroll-top:hover {
     transform: translateY(-5px);
     box-shadow: 0 10px 30px var(--accent-glow);
 }

 /* Loading Animation */
 .loader {
     position: fixed;
     top: 0;
     left: 0;
     width: 100%;
     height: 100%;
     background: var(--bg-primary);
     z-index: 9999;
     display: flex;
     align-items: center;
     justify-content: center;
     transition: opacity 0.5s ease, visibility 0.5s ease;
 }

 .loader.hidden {
     opacity: 0;
     visibility: hidden;
 }

 .loader-spinner {
     width: 60px;
     height: 60px;
     border-radius: 50%;
     border: 4px solid transparent;
     border-top-color: var(--accent);
     animation: spin 1s linear infinite;
 }

 @keyframes spin {
     0% {
         transform: rotate(0deg);
     }

     100% {
         transform: rotate(360deg);
     }
 }