:root {
            --primary-color: #2c3e50;
            --secondary-color: #3498db;
            --accent-color: #e74c3c;
            --success-color: #27ae60;
            --warning-color: #f39c12;
            --info-color: #17a2b8;
            --light-bg: #f8f9fa;
            --dark-bg: #343a40;
            --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            --shadow-light: 0 5px 15px rgba(0, 0, 0, 0.08);
            --shadow-medium: 0 10px 25px rgba(0, 0, 0, 0.12);
            --shadow-heavy: 0 20px 40px rgba(0, 0, 0, 0.15);
            --border-radius: 15px;
            --transition: all 0.3s ease;
        }

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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: var(--gradient-primary);
            min-height: 100vh;
            padding: 20px 0;
            line-height: 1.6;
        }

        .main-container {
            max-width: 1400px;
            margin: 0 auto;
            background: white;
            border-radius: 25px;
            box-shadow: var(--shadow-heavy);
            overflow: hidden;
            animation: fadeInUp 0.8s ease-out;
            position: relative;
        }

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

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

        .form-header {
            background: var(--gradient-primary);
            color: white;
            padding: 50px 30px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .form-header::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="2" fill="rgba(255,255,255,0.1)"/></svg>') repeat;
            animation: float 20s linear infinite;
        }

        @keyframes float {
            0% {
                transform: translateX(-50px) translateY(-50px);
            }

            100% {
                transform: translateX(50px) translateY(50px);
            }
        }

        .form-header h1 {
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 15px;
            position: relative;
            z-index: 2;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
        }

        .form-header p {
            font-size: 1.2rem;
            opacity: 0.9;
            position: relative;
            z-index: 2;
            margin-bottom: 20px;
        }

        .header-stats {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin-top: 20px;
            position: relative;
            z-index: 2;
        }

        .stat-item {
            text-align: center;
        }

        .stat-number {
            font-size: 2rem;
            font-weight: bold;
            display: block;
        }

        .stat-label {
            font-size: 0.9rem;
            opacity: 0.8;
        }

        .form-content {
            padding: 50px 40px;
        }

        .progress-container {
            margin-bottom: 40px;
            text-align: center;
        }

        .progress-bar {
            height: 6px;
            background: #e9ecef;
            border-radius: 3px;
            margin: 20px 0;
            overflow: hidden;
            position: relative;
        }

        .progress-fill {
            height: 100%;
            background: var(--gradient-primary);
            width: 0%;
            transition: width 0.5s ease;
            border-radius: 3px;
            position: relative;
        }

        .progress-fill::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            height: 100%;
            width: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
            animation: progressShine 2s infinite;
        }

        @keyframes progressShine {
            0% {
                transform: translateX(-100%);
            }

            100% {
                transform: translateX(100%);
            }
        }

        .progress-text {
            font-weight: 600;
            color: var(--primary-color);
            margin-top: 10px;
        }

        .section-card {
            background: white;
            border-radius: var(--border-radius);
            padding: 35px;
            margin-bottom: 30px;
            box-shadow: var(--shadow-light);
            border: 1px solid #e9ecef;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .section-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 5px;
            height: 100%;
            background: var(--secondary-color);
            transform: scaleY(0);
            transition: transform 0.3s ease;
        }

        .section-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-medium);
        }

        .section-card:hover::before {
            transform: scaleY(1);
        }

        .section-header {
            display: flex;
            align-items: center;
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 3px solid #f1f3f4;
            position: relative;
        }

        .section-icon {
            width: 60px;
            height: 60px;
            background: var(--gradient-primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-left: 20px;
            color: white;
            font-size: 1.4rem;
            box-shadow: var(--shadow-light);
            transition: var(--transition);
        }

        .section-card:hover .section-icon {
            transform: scale(1.1) rotate(5deg);
        }

        .section-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary-color);
            margin: 0;
            position: relative;
        }

        .section-subtitle {
            font-size: 1rem;
            color: #6c757d;
            margin-top: 5px;
            font-weight: 400;
        }

        .form-group {
            margin-bottom: 25px;
            position: relative;
        }

        .form-label {
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 10px;
            display: block;
            font-size: 1rem;
            position: relative;
        }

        .required-indicator {
            color: var(--accent-color);
            font-weight: bold;
            margin-right: 5px;
            font-size: 1.1rem;
        }

        .form-control {
            border: 2px solid #e9ecef;
            border-radius: 12px;
            padding: 15px 20px;
            font-size: 1rem;
            transition: var(--transition);
            background: white;
            position: relative;
        }

        .form-control:focus {
            border-color: var(--secondary-color);
            box-shadow: 0 0 0 0.25rem rgba(52, 152, 219, 0.25);
            outline: none;
            transform: translateY(-1px);
        }

        .form-control.is-invalid {
            border-color: var(--accent-color);
            box-shadow: 0 0 0 0.25rem rgba(231, 76, 60, 0.25);
        }

        .form-control.is-valid {
            border-color: var(--success-color);
            box-shadow: 0 0 0 0.25rem rgba(39, 174, 96, 0.25);
        }

        .input-group-text {
            background: var(--gradient-primary);
            color: white;
            border: 2px solid var(--secondary-color);
            border-radius: 12px 0 0 12px;
            font-weight: 600;
        }

        .input-group .form-control {
            border-radius: 0 12px 12px 0;
        }

        /* Enhanced Select2 Styling */
        .select2-container {
            width: 400px !important;
        }

        .select2-container--default .select2-selection--single {
            height: 55px !important;
            border: 2px solid #e9ecef !important;
            border-radius: 12px !important;
            padding: 0 20px !important;
            background: white !important;
            font-size: 1rem !important;
            transition: var(--transition) !important;
        }

        .select2-container--default .select2-selection--single .select2-selection__rendered {
            line-height: 51px !important;
            color: #495057 !important;
            padding: 0 !important;
        }

        .select2-container--default .select2-selection--single .select2-selection__arrow {
            height: 51px !important;
            right: 15px !important;
        }

        .select2-container--default .select2-selection--single .select2-selection__arrow b {
            border-color: var(--secondary-color) transparent transparent transparent !important;
            border-width: 6px 6px 0 6px !important;
        }

        .select2-container--default .select2-selection--single .select2-selection__placeholder {
            color: #6c757d !important;
            font-style: italic;
        }

        .select2-container--default.select2-container--focus .select2-selection--single {
            border-color: var(--secondary-color) !important;
            box-shadow: 0 0 0 0.25rem rgba(52, 152, 219, 0.25) !important;
            transform: translateY(-1px) !important;
        }

        .select2-dropdown {
            border: 2px solid var(--secondary-color) !important;
            border-radius: 12px !important;
            box-shadow: var(--shadow-medium) !important;
            margin-top: 8px !important;
            overflow: hidden !important;
        }

        .select2-container--default .select2-results__option {
            padding: 15px 20px !important;
            font-size: 1rem !important;
            transition: var(--transition) !important;
            border-bottom: 1px solid #f1f3f4 !important;
        }

        .select2-container--default .select2-results__option:last-child {
            border-bottom: none !important;
        }

        .select2-container--default .select2-results__option--highlighted[aria-selected] {
            background: var(--gradient-primary) !important;
            color: white !important;
        }

        .select2-container--default .select2-search--dropdown {
            padding: 15px !important;
            background: #f8f9fa !important;
            border-bottom: 2px solid #e9ecef !important;
        }

        .select2-container--default .select2-search--dropdown .select2-search__field {
            border: 2px solid #e9ecef !important;
            border-radius: 10px !important;
            padding: 12px 15px !important;
            font-size: 1rem !important;
            width: 100% !important;
            margin: 0 !important;
        }

        .select2-container--default .select2-search--dropdown .select2-search__field:focus {
            border-color: var(--secondary-color) !important;
            outline: none !important;
            box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25) !important;
        }

        /* Select2 validation states */
        .select2-container.is-invalid .select2-selection {
            border-color: var(--accent-color) !important;
            box-shadow: 0 0 0 0.25rem rgba(231, 76, 60, 0.25) !important;
        }

        .select2-container.is-valid .select2-selection {
            border-color: var(--success-color) !important;
            box-shadow: 0 0 0 0.25rem rgba(39, 174, 96, 0.25) !important;
        }

        .invalid-feedback {
            display: block;
            color: var(--accent-color);
            font-size: 0.9rem;
            margin-top: 8px;
            font-weight: 600;
            padding-left: 5px;
        }

        .valid-feedback {
            display: block;
            color: var(--success-color);
            font-size: 0.9rem;
            margin-top: 8px;
            font-weight: 600;
            padding-left: 5px;
        }

        .submit-section {
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            padding: 40px;
            text-align: center;
            margin-top: 40px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-light);
        }

        .btn-submit {
            background: var(--gradient-primary);
            border: none;
            color: white;
            padding: 18px 60px;
            font-size: 1.2rem;
            font-weight: 700;
            border-radius: 50px;
            transition: var(--transition);
            text-transform: uppercase;
            letter-spacing: 1px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-light);
        }

        .btn-submit::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: left 0.5s;
        }

        .btn-submit:hover::before {
            left: 100%;
        }

        .btn-submit:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-medium);
        }

        .btn-submit:active {
            transform: translateY(-1px);
        }

        .btn-outline-secondary,
        .btn-outline-info {
            border: 2px solid;
            border-radius: 50px;
            padding: 15px 40px;
            font-weight: 600;
            transition: var(--transition);
        }

        .btn-outline-secondary:hover,
        .btn-outline-info:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-light);
        }

        .floating-shapes {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: -1;
        }

        .shape {
            position: absolute;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            animation: float-shapes 15s infinite linear;
        }

        .shape:nth-child(1) {
            width: 100px;
            height: 100px;
            top: 20%;
            left: 10%;
            animation-delay: -2s;
        }

        .shape:nth-child(2) {
            width: 150px;
            height: 150px;
            top: 60%;
            right: 10%;
            animation-delay: -8s;
        }

        .shape:nth-child(3) {
            width: 80px;
            height: 80px;
            bottom: 20%;
            left: 20%;
            animation-delay: -15s;
        }

        .shape:nth-child(4) {
            width: 60px;
            height: 60px;
            top: 40%;
            right: 30%;
            animation-delay: -5s;
        }

        @keyframes float-shapes {

            0%,
            100% {
                transform: translateY(0px) rotate(0deg);
                opacity: 0.3;
            }

            50% {
                transform: translateY(-30px) rotate(180deg);
                opacity: 0.8;
            }
        }

        .notification {
            position: fixed;
            top: 20px;
            right: 20px;
            z-index: 9999;
            min-width: 350px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-medium);
            animation: slideInRight 0.3s ease-out;
        }

        @keyframes slideInRight {
            from {
                transform: translateX(100%);
                opacity: 0;
            }

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

        .field-hint {
            font-size: 0.85rem;
            color: #6c757d;
            margin-top: 5px;
            font-style: italic;
        }

        .section-divider {
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--secondary-color), transparent);
            margin: 40px 0;
            border-radius: 1px;
        }

        @media (max-width: 768px) {
            .main-container {
                margin: 0 10px;
                border-radius: 20px;
            }

            .form-header {
                padding: 40px 20px;
            }

            .form-header h1 {
                font-size: 2.2rem;
            }

            .header-stats {
                flex-direction: column;
                gap: 15px;
            }

            .form-content {
                padding: 30px 20px;
            }

            .section-card {
                padding: 25px 20px;
            }

            .section-header {
                flex-direction: column;
                text-align: center;
            }

            .section-icon {
                margin: 0 0 15px 0;
            }

            .submit-section {
                padding: 30px 20px;
            }

            .btn-submit {
                padding: 15px 40px;
                font-size: 1.1rem;
            }

            .header-stats .stat-item {
                padding: 10px;
                background: rgba(255, 255, 255, 0.1);
                border-radius: 10px;
            }
        }

        @media (max-width: 576px) {
            .select2-container {
                width: 250px !important;
            }

            .form-header h1 {
                font-size: 1.8rem;
            }

            .section-card {
                padding: 20px 15px;
            }

            .btn-submit {
                width: 100%;
                padding: 15px;
            }

            .notification {
                right: 10px;
                left: 10px;
                min-width: auto;
            }
        }

        /* Loading animation */
        .loading-spinner {
            display: inline-block;
            width: 20px;
            height: 20px;
            border: 3px solid rgba(255, 255, 255, .3);
            border-radius: 50%;
            border-top-color: #fff;
            animation: spin 1s ease-in-out infinite;
        }

        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }

        /* Tooltip styling */
        .tooltip-custom {
            position: relative;
            cursor: help;
        }

        .tooltip-custom::after {
            content: attr(data-tooltip);
            position: absolute;
            bottom: 125%;
            left: 50%;
            transform: translateX(-50%);
            padding: 8px 12px;
            background: var(--dark-bg);
            color: white;
            border-radius: 8px;
            font-size: 0.8rem;
            white-space: nowrap;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            z-index: 1000;
        }

        .tooltip-custom:hover::after {
            opacity: 1;
            visibility: visible;
        }