:root {
            --primary: #2563eb;       /* Vibrant tech blue */
            --secondary: #1e40af;     /* Deep tech blue */
            --accent: #3b82f6;       /* Bright accent blue */
            --ai-purple: #7c3aed;    /* AI-inspired purple */
            --success: #10b981;      /* Success green */
            --warning: #f59e0b;      /* Warning orange */
            --danger: #ef4444;       /* Danger red */
            --dark-bg: #111827;       /* Dark background */
            --light-bg: #f3f4f6;      /* Light background */
            --text-dark: #1f2937;     /* Dark text */
            --text-light: #f9fafb;    /* Light text */
            --card-bg: #ffffff;       /* Card background */
            --border-radius: 8px;      /* Consistent border radius */
            --transition: all 0.3s ease;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Roboto', sans-serif;
            background-color: var(--light-bg);
            color: var(--text-dark);
            line-height: 1.6;
            background: linear-gradient(135deg, #e0f2fe, #f0f9ff);
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: 'Montserrat', sans-serif;
            font-weight: 600;
        }

        /* Header Styles */
        header {
            background-color: rgba(17, 24, 39, 0.95);
            backdrop-filter: blur(10px);
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            transition: var(--transition);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 2rem;
            max-width: 1400px;
            margin: 0 auto;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .logo-icon {
            font-size: 2rem;
            color: var(--accent);
            animation: pulse 2s infinite;
        }

        .logo-text h1 {
            font-size: 1.5rem;
            background: linear-gradient(90deg, var(--accent), var(--ai-purple));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            line-height: 1.2;
        }

        .logo-text p {
            font-size: 0.8rem;
            color: var(--text-light);
            opacity: 0.8;
        }

        /* Navigation */
        nav ul {
            display: flex;
            list-style: none;
            gap: 1.5rem;
        }

        nav ul li a {
            color: var(--text-light);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            padding: 0.5rem 0;
        }

        nav ul li a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent), var(--ai-purple));
            transition: var(--transition);
        }

        nav ul li a:hover::after,
        nav ul li a.active::after {
            width: 100%;
        }

        /* Main Content */
        .main-content {
            padding-top: 80px;
            min-height: 100vh;
        }

        /* Registration Header */
        .registration-header {
            background: linear-gradient(135deg, var(--dark-bg), var(--secondary));
            color: white;
            padding: 4rem 2rem 2rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .registration-header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path fill="rgba(59,130,246,0.05)" d="M0,0 L100,0 L100,100 Q50,80 0,100 Z"></path></svg>');
            background-size: 100% 100%;
            background-repeat: no-repeat;
            z-index: 0;
        }

        .registration-header-content {
            position: relative;
            z-index: 1;
            max-width: 800px;
            margin: 0 auto;
        }

        .registration-header h1 {
            font-size: 2.2rem;
            margin-bottom: 1rem;
            color: var(--text-light);
        }

        .registration-header p {
            font-size: 1.1rem;
            opacity: 0.9;
            margin-bottom: 1.5rem;
            color: rgba(255, 255, 255, 0.9);
        }

        /* Registration Container */
        .registration-container {
            max-width: 90%;
            margin: 2rem auto;
            padding: 0 2rem;
        }

        /* Card Styles */
        .registration-card {
            background: var(--card-bg);
            border-radius: var(--border-radius);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            overflow: hidden;
            margin-bottom: 3rem;
            border: 1px solid rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }

        .registration-card:hover {
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
            transform: translateY(-3px);
        }

        /* Progress Steps */
        .step-progress {
            display: flex;
            justify-content: space-between;
            margin-bottom: 2.5rem;
            position: relative;
        }

        .step-progress:before {
            content: '';
            position: absolute;
            top: 15px;
            left: 0;
            right: 0;
            height: 3px;
            background: #e5e7eb;
            z-index: 1;
        }

        .step-progress-item {
            position: relative;
            z-index: 2;
            text-align: center;
            flex: 1;
        }

        .step-number {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background-color: #e5e7eb;
            color: #6b7280;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 0.5rem;
            font-weight: 600;
            transition: var(--transition);
        }

        .step-progress-item.active .step-number {
            background-color: var(--accent);
            color: white;
        }

        .step-progress-item.completed .step-number {
            background-color: var(--success);
            color: white;
        }

        .step-title {
            font-size: 0.9rem;
            color: #6b7280;
            font-weight: 500;
            transition: var(--transition);
        }

        .step-progress-item.active .step-title,
        .step-progress-item.completed .step-title {
            color: var(--text-dark);
            font-weight: 600;
        }

        /* Form Sections */
        .form-section {
            padding: 2rem;
            margin-bottom: 1.5rem;
            border-left: 4px solid var(--accent);
            background: white;
            border-radius: var(--border-radius);
        }

        .section-header {
            color: var(--secondary);
            font-size: 1.4rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            padding-bottom: 0.75rem;
            border-bottom: 1px solid #e5e7eb;
            display: flex;
            align-items: center;
        }

        .section-header i {
            margin-right: 0.75rem;
            color: var(--accent);
        }

        /* Form Elements */
        .form-group {
            margin-bottom: 1.5rem;
        }

        .form-label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 500;
            color: var(--text-dark);
        }

        .form-control {
            display: block;
            width: 100%;
            padding: 0.75rem 1rem;
            font-size: 1rem;
            line-height: 1.5;
            color: var(--text-dark);
            background-color: white;
            background-clip: padding-box;
            border: 1px solid #d1d5db;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--accent);
            outline: 0;
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
        }

        select.form-control {
            appearance: none;
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
            background-repeat: no-repeat;
            background-position: right 0.75rem center;
            background-size: 16px 12px;
        }

        textarea.form-control {
            min-height: 100px;
        }

        /* Photo Upload */
        .photo-upload {
            display: flex;
            align-items: flex-start;
            margin-bottom: 1.5rem;
        }

        .photo-preview {
            width: 120px;
            height: 150px;
            background-color: #f3f4f6;
            border: 2px dashed #d1d5db;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 1.5rem;
            overflow: hidden;
            border-radius: var(--border-radius);
        }

        .photo-preview img {
            max-width: 100%;
            max-height: 100%;
            object-fit: cover;
        }

        .custom-file {
            position: relative;
            flex: 1;
        }

        .custom-file-input {
            position: relative;
            z-index: 2;
            width: 100%;
            height: calc(2.25rem + 2px);
            margin: 0;
            opacity: 0;
        }

        .custom-file-label {
            position: absolute;
            top: 0;
            right: 0;
            left: 0;
            z-index: 1;
            height: calc(2.25rem + 2px);
            padding: 0.375rem 0.75rem;
            font-weight: 400;
            line-height: 1.5;
            color: #495057;
            background-color: #fff;
            border: 1px solid #ced4da;
            border-radius: var(--border-radius);
        }

        .custom-file-label::after {
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            z-index: 3;
            display: block;
            height: calc(2.25rem + 2px);
            padding: 0.375rem 0.75rem;
            line-height: 1.5;
            color: #495057;
            content: "Browse";
            background-color: #e9ecef;
            border-left: inherit;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            text-align: center;
            white-space: nowrap;
            vertical-align: middle;
            user-select: none;
            border: 1px solid transparent;
            padding: 0.75rem 1.5rem;
            font-size: 1rem;
            line-height: 1.5;
            border-radius: 50px;
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-primary {
            color: white;
            background: linear-gradient(90deg, var(--accent), var(--ai-purple));
            box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
        }

        .btn-secondary {
            color: var(--text-dark);
            background-color: white;
            border: 1px solid #d1d5db;
        }

        .btn-secondary:hover {
            background-color: #f3f4f6;
        }

        .btn-success {
            color: white;
            background-color: var(--success);
        }

        .btn-success:hover {
            background-color: #0d9f6e;
            color: white;
        }

        /* Form Footer */
        .form-footer {
            display: flex;
            justify-content: space-between;
            margin-top: 2rem;
             padding:  2rem;
        }

        /* Validation Styles */
        .is-invalid {
            border-color: var(--danger) !important;
        }

        .invalid-feedback {
            display: none;
            width: 100%;
            margin-top: 0.25rem;
            font-size: 0.875rem;
            color: var(--danger);
        }

        .was-validated .form-control:invalid ~ .invalid-feedback,
        .form-control.is-invalid ~ .invalid-feedback {
            display: block;
        }

        /* Alerts */
        .alert {
            position: relative;
            padding: 1rem 1.25rem;
            margin-bottom: 1.5rem;
            border: 1px solid transparent;
            border-radius: var(--border-radius);
        }

        .alert-danger {
            color: #721c24;
            background-color: #f8d7da;
            border-color: #f5c6cb;
        }

        .alert-warning {
            color: #856404;
            background-color: #fff3cd;
            border-color: #ffeeba;
        }

        .alert-success {
            color: #155724;
            background-color: #d4edda;
            border-color: #c3e6cb;
        }

        /* Success Message */
        .success-message {
            text-align: center;
            padding: 3rem 2rem;
            background: white;
            border-radius: var(--border-radius);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
        }

        .success-icon {
            font-size: 4rem;
            color: var(--success);
            margin-bottom: 1.5rem;
        }

        .success-message h3 {
            font-size: 1.75rem;
            margin-bottom: 1rem;
            color: var(--secondary);
        }

        .success-message p {
            font-size: 1.1rem;
            margin-bottom: 1.5rem;
            color: var(--text-dark);
        }

        /* Footer */
        footer {
            background: var(--dark-bg);
            color: var(--text-light);
            padding: 3rem 2rem 2rem;
            margin-top: 3rem;
        }

        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            max-width: 1200px;
            margin: 0 auto;
        }

        .footer-col h3 {
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 0.8rem;
        }

        .footer-col h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), var(--ai-purple));
            border-radius: 2px;
        }

        .footer-col p {
            margin-bottom: 1.5rem;
            opacity: 0.8;
            font-size: 0.95rem;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 0.8rem;
        }

        .footer-links a {
            color: var(--text-light);
            text-decoration: none;
            opacity: 0.8;
            transition: var(--transition);
            font-size: 0.95rem;
            display: inline-block;
        }

        .footer-links a:hover {
            opacity: 1;
            transform: translateX(5px);
            color: var(--accent);
        }

        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            opacity: 0.7;
            font-size: 0.9rem;
            margin-top: 2rem;
        }

        /* Floating Tech Elements */
        .tech-elements {
            position: fixed;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            pointer-events: none;
            z-index: -1;
            overflow: hidden;
        }

        .tech-element {
            position: absolute;
            opacity: 0.1;
            animation: float 15s infinite linear;
            z-index: -1;
        }

        .tech-element:nth-child(1) {
            top: 20%;
            left: 10%;
            font-size: 3rem;
            color: var(--accent);
            animation-delay: 0s;
        }

        .tech-element:nth-child(2) {
            top: 60%;
            left: 80%;
            font-size: 2.5rem;
            color: var(--ai-purple);
            animation-delay: 2s;
            animation-duration: 12s;
        }

        .tech-element:nth-child(3) {
            top: 30%;
            left: 85%;
            font-size: 4rem;
            color: var(--success);
            animation-delay: 4s;
            animation-duration: 18s;
        }

        .tech-element:nth-child(4) {
            top: 70%;
            left: 15%;
            font-size: 3.5rem;
            color: var(--danger);
            animation-delay: 1s;
            animation-duration: 20s;
        }
       
        /* Animations */
        @keyframes float {
            0% {
                transform: translateY(0) rotate(0deg);
            }
            50% {
                transform: translateY(-20px) rotate(5deg);
            }
            100% {
                transform: translateY(0) rotate(0deg);
            }
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        @keyframes pulse {
            0% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.1);
            }
            100% {
                transform: scale(1);
            }
        }

        .form-step {
            animation: fadeIn 0.4s ease;
        }

        /* Responsive Styles */
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                padding: 1rem;
            }
            
            .logo {
                margin-bottom: 1rem;
            }
            
            nav ul {
                flex-wrap: wrap;
                justify-content: center;
                gap: 1rem;
            }
            
            .registration-header {
                padding: 5rem 1.5rem 2rem;
            }
            
            .registration-header h1 {
                font-size: 1.8rem;
            }
            
            .step-title {
                font-size: 0.75rem;
            }
            
            .photo-upload {
                flex-direction: column;
            }
            
            .photo-preview {
                margin-right: 0;
                margin-bottom: 1rem;
            }
            
            .form-section {
                padding: 1.5rem;
            }
            
            .form-footer {
                flex-direction: column;
                gap: 1rem;
            }
        }

        @media (max-width: 576px) {
            .step-progress {
                flex-wrap: wrap;
            }
            
            .step-progress-item {
                flex: 0 0 50%;
                margin-bottom: 1rem;
            }
            
            .step-progress:before {
                top: 15px;
                width: 100%;
            }
        }
        /* Mobile-specific styles */
        @media (max-width: 768px) {
            .registration-container {
                max-width: 100%;
                margin: 1rem 0;
                padding: 0 1rem;
                width: 100%;
                box-sizing: border-box;
            }

            .registration-card {
                border-radius: 0;
                margin-bottom: 0;
                box-shadow: none;
                border: none;
            }

            .form-section {
                padding: 1.5rem 1rem;
                margin-bottom: 0;
                border-radius: 0;
                border-left: none;
            }

            .step-progress {
                margin-bottom: 1.5rem;
                padding: 0 0.5rem;
            }

            .step-title {
                font-size: 0.7rem;
            }

        /* .form-footer {
                position: fixed;
                bottom: 0;
                left: 0;
                right: 0;
                background: white;
                padding: 1rem;
                box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
                margin-top: 0;
                z-index: 100;
            }*/

            body {
                padding-bottom: 80px; /* Make space for fixed footer */
            }
        }

        /* For very small screens */
        @media (max-width: 480px) {
            .registration-container {
                padding: 0 0.5rem;
            }

            .form-section {
                padding: 1rem 0.5rem;
            }

            .section-header {
                font-size: 1.2rem;
            }

            .form-group {
                margin-bottom: 1rem;
            }
        }