:root {
            --primary-blue: #0a2463;
            --secondary-blue: #1e40af;
            --coral: #ff6b6b;
            --light-coral: #ff8e8e;
            --white: #ffffff;
            --light-gray: #f8fafc;
            --mid-gray: #e2e8f0;
            --dark-gray: #000000;
            --text: #334155;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Inter', sans-serif;
            color: var(--text);
            line-height: 1.6;
            background-color: var(--white);
        }
        
        
        a {
            text-decoration: none;
            color: var(--secondary-blue);
            transition: all 0.3s ease;
        }
        
        a:hover {
            color: var(--coral);
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* Header & Navigation */
        header {
            background-color: var(--white);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
        }
        
        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-blue);
        }
        
        .nav-menu {
            display: flex;
            list-style: none;
        }
        
        .nav-menu li {
            margin-left: 30px;
           
        }
        
        .nav-menu a {
            color: var(--text);
            font-weight: 500;
            position: relative;
        }
        
        .nav-menu a:after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--coral);
            transition: width 0.3s ease;
        }
        
        .nav-menu a:hover:after {
            width: 100%;
        }
        
        .nav-menu a.active {
            color: var(--coral);
        }
        
        .nav-menu a.active:after {
            width: 100%;
        }
        
        .hamburger {
            display: none;
            cursor: pointer;
        }
        
        /* Hero Section */
        .hero {
            background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
            color: var(--white);
            padding: 100px 0;
            text-align: center;
        }
        
        .hero-content {
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .hero h1 {
            font-size: 2.8rem;
            margin-bottom: 20px;
            font-weight: 700;
        }
        
        .hero p {
            font-size: 1.2rem;
            margin-bottom: 40px;
            opacity: 0.9;
        }
        
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 50px;
        }
        
        .btn {
            display: inline-block;
            padding: 15px 30px;
            border-radius: 50px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            transition: all 0.3s ease;
            cursor: pointer;
        }
        
        .btn-primary {
            background-color: var(--coral);
            color: var(--white);
            border: none;
        }
        
        .btn-primary:hover {
            background-color: var(--light-coral);
            color: var(--white);
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        
        .btn-secondary {
            background-color: transparent;
            color: var(--white);
            border: 2px solid var(--white);
        }
        
        .btn-secondary:hover {
            background-color: var(--white);
            color: var(--primary-blue);
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        
        .countdown {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 50px;
        }
        
        .countdown-item {
            background-color: rgba(255, 255, 255, 0.1);
            padding: 20px;
            border-radius: 10px;
            min-width: 100px;
        }
        
        .countdown-number {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 5px;
        }
        
        .countdown-label {
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        
        .stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            margin-top: 50px;
        }
        
        .stat-item {
            text-align: center;
        }
        
        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--coral);
            margin-bottom: 5px;
        }
        
        .stat-label {
            font-size: 1rem;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        
        /* Section Styles */
        .page-section {
            display: none;
            padding: 100px 0;
        }
        
        .page-section.active {
            display: block;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 60px;
        }
        
        .section-title h2 {
            font-size: 2.5rem;
            color: var(--primary-blue);
            margin-bottom: 20px;
            position: relative;
            display: inline-block;
        }
        
        .section-title h2:after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background-color: var(--coral);
            border-radius: 2px;
        }
        
        .section-title p {
            font-size: 1.2rem;
            color: var(--dark-gray);
            max-width: 700px;
            margin: 0 auto;
        }
        
        /* About Section */
        .about-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        
        .about-text h3 {
            font-size: 1.8rem;
            color: var(--primary-blue);
            margin-bottom: 20px;
        }
        
        .about-text p {
            margin-bottom: 20px;
        }
        .sub-text{
            max-width: 100%;
            text-align: justify;

        }
        
        .committee-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }
        
        .committee-member {
            text-align: center;
            padding: 20px;
            border-radius: 10px;
            background-color: var(--light-gray);
            transition: all 0.3s ease;
        }
        
        .committee-member:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        
        .member-img {
            width: 120px;
            height: 120px;
            border-radius: 50%;
            object-fit: cover;
            margin-bottom: 15px;
            background-color: var(--mid-gray);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--dark-gray);
            margin: 0 auto 15px;
        }
        
        .member-name {
            font-weight: 600;
            color: var(--primary-blue);
            margin-bottom: 5px;
        }
        
        .member-role {
            color: var(--dark-gray);
            font-size: 0.9rem;
        }
        
        /* Call for Papers */
        .topics-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 30px;
            margin-bottom: 50px;
        }
        
        .topic-card {
            background-color: var(--light-gray);
            padding: 30px;
            border-radius: 10px;
            transition: all 0.3s ease;
        }
        
        .topic-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        
        .topic-card h3 {
            color: var(--primary-blue);
            margin-bottom: 15px;
            font-size: 1.3rem;
        }
        
        .topic-card ul {
            list-style-position: inside;
            color: var(--dark-gray);
        }
        
        .topic-card li {
            margin-bottom: 8px;
        }
        
        .dates-container {
            background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
            color: var(--white);
            padding: 40px;
            border-radius: 10px;
            margin-bottom: 50px;
        }
        
        .date-item {
            display: flex;
            justify-content: space-between;
            padding: 15px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .date-item:last-child {
            border-bottom: none;
        }
        
        /* Speakers */
        .speakers-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 40px;
        }
        
        .speaker-card {
            text-align: center;
            padding: 30px;
            border-radius: 10px;
            background-color: var(--light-gray);
            transition: all 0.3s ease;
        }
        
        .speaker-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        
        .speaker-img {
            width: 150px;
            height: 150px;
            border-radius: 50%;
            object-fit: cover;
            margin-bottom: 20px;
            background-color: var(--mid-gray);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--dark-gray);
            margin: 0 auto 20px;
            font-size: 3rem;
        }
        
        .speaker-name {
            font-size: 1.5rem;
            color: var(--primary-blue);
            margin-bottom: 10px;
        }
        
        .speaker-role {
            color: var(--coral);
            margin-bottom: 15px;
            font-weight: 500;
        }
        
        .speaker-bio {
            color: var(--dark-gray);
            margin-bottom: 20px;
        }
        
        /* Schedule */
        .schedule-tabs {
            display: flex;
            justify-content: center;
            margin-bottom: 40px;
            gap: 10px;
        }
        
        .schedule-tab {
            padding: 15px 30px;
            background-color: var(--light-gray);
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-weight: 500;
        }
        
        .schedule-tab.active {
            background-color: var(--primary-blue);
            color: var(--white);
        }
        
        .schedule-content {
            display: none;
        }
        
        .schedule-content.active {
            display: block;
        }
        
        .schedule-item {
            display: grid;
            grid-template-columns: 150px 1fr;
            gap: 30px;
            padding: 30px;
            border-bottom: 1px solid var(--mid-gray);
        }
        
        .schedule-item:last-child {
            border-bottom: none;
        }
        
        .schedule-time {
            font-weight: 600;
            color: var(--primary-blue);
        }
        
        .schedule-session h3 {
            margin-bottom: 10px;
            color: var(--text);
        }
        
        .schedule-session p {
            color: var(--dark-gray);
        }
        
        /* Registration */
        .pricing-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 30px;
            margin-bottom: 50px;
        }
        
        .pricing-card {
            background-color: var(--light-gray);
            padding: 40px 30px;
            border-radius: 10px;
            text-align: center;
            transition: all 0.3s ease;
        }
        
        .pricing-card.featured {
            background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
            color: var(--white);
            transform: scale(1.05);
        }
        
        .pricing-card.featured .btn {
            background-color: var(--white);
            color: var(--primary-blue);
        }
        
        .pricing-card.featured .price {
            color: var(--white);
        }
        
        .pricing-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        
        .pricing-card.featured:hover {
            transform: scale(1.05) translateY(-5px);
        }
        
        .pricing-card h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: var(--primary-blue);
        }
        
        .pricing-card.featured h3 {
            color: var(--white);
        }
        
        .price {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--coral);
            margin-bottom: 20px;
        }
        
        .pricing-features {
            list-style: none;
            margin-bottom: 30px;
        }
        
        .pricing-features li {
            padding: 10px 0;
            border-bottom: 1px solid var(--mid-gray);
        }
        
        .pricing-card.featured .pricing-features li {
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .pricing-features li:last-child {
            border-bottom: none;
        }
        
        /* Venue */
        .venue-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            margin-bottom: 50px;
        }
        
        .venue-map {
            height: 400px;
            background-color: var(--mid-gray);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--dark-gray);
        }
        
        .hotel-card {
            display: grid;
            grid-template-columns: 150px 1fr;
            gap: 20px;
            padding: 20px;
            background-color: var(--light-gray);
            border-radius: 10px;
            margin-bottom: 20px;
        }
        
        .hotel-img {
            height: 100px;
            background-color: var(--mid-gray);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--dark-gray);
        }
        
        /* Sponsors */
        .sponsor-tiers {
            margin-bottom: 50px;
        }
        
        .sponsor-tier {
            margin-bottom: 40px;
        }
        
        .sponsor-tier h3 {
            color: var(--primary-blue);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--mid-gray);
        }
        
        .sponsor-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 30px;
        }
        
        .sponsor-card {
            height: 150px;
            background-color: var(--light-gray);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--dark-gray);
            font-weight: 600;
            transition: all 0.3s ease;
        }
        
        .sponsor-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        
        /* Contact */
        .contact-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }
        
        .contact-form {
            background-color: var(--light-gray);
            padding: 30px;
            border-radius: 10px;
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
        }
        
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 15px;
            border: 1px solid var(--mid-gray);
            border-radius: 8px;
            font-family: 'Inter', sans-serif;
        }
        
        .form-group textarea {
            min-height: 150px;
        }
        
        .contact-info {
            padding: 30px;
        }
        
        .info-item {
            display: flex;
            margin-bottom: 30px;
        }
        
        .info-icon {
            width: 50px;
            height: 50px;
            background-color: var(--primary-blue);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 15px;
            font-size: 1.2rem;
        }
        
        .info-content h3 {
            margin-bottom: 5px;
            color: var(--primary-blue);
        }
        
        /* Footer */
        footer {
            background-color: var(--primary-blue);
            color: var(--white);
            padding: 80px 0 40px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 60px;
        }
        
        .footer-column h3 {
            font-size: 1.5rem;
            margin-bottom: 20px;
            position: relative;
            display: inline-block;
        }
        
        .footer-column h3:after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 40px;
            height: 3px;
            background-color: var(--coral);
            border-radius: 2px;
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 10px;
        }
        
        .footer-links a {
            color: var(--mid-gray);
        }
        
        .footer-links a:hover {
            color: var(--white);
        }
        
        .social-links {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }
        
        .social-links a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--white);
            transition: all 0.3s ease;
        }
        
        .social-links a:hover {
            background-color: var(--coral);
            transform: translateY(-3px);
        }
        
        .copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--mid-gray);
            font-size: 0.9rem;
        }
        
        /* Responsive Styles */
        @media (max-width: 992px) {
            .hero h1 {
                font-size: 2.8rem;
            }
            
            .about-content,
            .venue-content,
            .contact-content {
                grid-template-columns: 1fr;
            }
        }
        
        @media (max-width: 768px) {
            .nav-menu {
                position: fixed;
                top: 80px;
                left: -100%;
                flex-direction: column;
                background-color: var(--white);
                width: 100%;
                height: calc(100vh - 80px);
                padding: 40px;
                transition: all 0.5s ease;
                box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
            }
            
            .nav-menu.active {
                left: 0;
            }
            
            .nav-menu li {
                margin: 15px 0;
            }
            
            .hamburger {
                display: block;
            }
            
            .hero h1 {
                font-size: 2.3rem;
            }
            
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            
            .countdown {
                flex-wrap: wrap;
            }
            
            .stats {
                flex-wrap: wrap;
            }
            
            .schedule-item {
                grid-template-columns: 1fr;
            }
        }
        
        @media (max-width: 576px) {
            .hero h1 {
                font-size: 2rem;
            }
            
            .hero p {
                font-size: 1rem;
            }
            
            .section-title h2 {
                font-size: 2rem;
            }
            
            .countdown-item {
                min-width: 80px;
                padding: 15px;
            }
            
            .countdown-number {
                font-size: 1.8rem;
            }
            
            .schedule-tabs {
                flex-direction: column;
            }
        }
   
          .table-container {
            padding: 30px;
            overflow-x: auto;
        }
        
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
        }
        
        th, td {
            padding: 18px 15px;
            text-align: left;
            border-bottom: 1px solid #e2e8f0;
        }
        
        th {
            background-color: #f1f5f9;
            font-weight: 600;
            color: #0a2463;
        }
        
        tr:last-child td {
            border-bottom: none;
        }
        
        tr:hover {
            background-color: #f8fafc;
        }
        
        .category {
            font-weight: 500;
            color: #0a2463;
        }
        
        .price {
            font-size: 1.0rem;
            font-weight: 600;
            color: #1e40af;
        }
        
        .note {
            background-color: #fffbeb;
            padding: 20px;
            border-radius: 8px;
            margin-top: 30px;
            border-left: 4px solid #f59e0b;
        }
        
        .note h3 {
            color: #d97706;
            margin-bottom: 10px;
        }
        
        .footer {
            background-color: #f1f5f9;
            padding: 20px;
            text-align: center;
            color: #64748b;
            font-size: 0.9rem;
        }
        
        @media (max-width: 768px) {
            th, td {
                padding: 14px 10px;
            }
            
            .header h1 {
                font-size: 0.8rem;
            }
        }
        
        @media (max-width: 576px) {
            .container {
                border-radius: 8px;
            }
            
            .header {
                padding: 20px;
            }
            
            .header h1 {
                font-size: 0.5rem;
            }
            
            .table-container {
                padding: 15px;
            }
            
            th, td {
                padding: 12px 8px;
                font-size: 0.9rem;
            }
            
            table {
                display: block;
                overflow-x: auto;
            }
        }
        
        @media (max-width: 400px) {
            th, td {
                padding: 10px 6px;
                font-size: 0.85rem;
            }
            
            .price {
                font-size: 0.8rem;
            }
        }

        /*  code for sub menu */

         /* Navigation Styles 
        .nav-menu {
            display: flex;
            list-style: none;
            background: #0a2463;
            padding: 0;
            margin: 0;
        }
            */
        
        .nav-menu li {
            position: relative;
        }
        
        /*
        .nav-menu a {
            color: white;
            text-decoration: none;
            padding: 15px 20px;
            display: block;
            transition: all 0.3s ease;
        }
        
*/
       
        
        /* Submenu Styles */
        .submenu {
            position: absolute;
            background: white;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            width: 250px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: all 0.3s ease;
            z-index: 1000;
            list-style-type: none; /* Removes bullets */
        }
        
        .nav-menu li:hover > .submenu {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        
        .submenu a {
            color: #334155;
            padding: 12px 20px;
            line-height: 2.6;
            border-bottom: 1px solid #f1f5f9;
        }
        
        .submenu a:hover {
            background: #f8fafc;
            color: #0a2463;
            line-height: 2.6em;
        }
         
        .has-submenu > a::after {
            
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            margin-left: 20px;
            font-size: 0.9em;
        }
        
        /* Mobile Responsiveness */
        @media (max-width: 768px) {
            .nav-menu {
                flex-direction: column;
            }
            
            .submenu {
                position: static;
                opacity: 1;
                visibility: visible;
                transform: none;
                box-shadow: none;
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.3s ease;
                
            }
            
            .nav-menu li:hover > .submenu {
                max-height: 400px;
                list-style-type: none; /* Removes bullets */
                
            }
            
            .submenu a {
                padding-left: 40px;
            }
            
            .has-submenu > a::after {
                content: "\f107";
                float: right;
            }
        }