.hero-section {
            margin-top: 40px;
            background: linear-gradient(135deg, #126082 0%, #0d4f6d 50%, #08405a 100%);
            border-radius: 30px;
            padding: 60px 40px;
            margin-bottom: 40px;
            box-shadow:
                0 20px 60px rgba(18, 96, 130, 0.3),
                0 10px 30px rgba(8, 64, 90, 0.2);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.15) 0%, transparent 70%);
            animation: float 20s ease-in-out infinite;
        }

        @keyframes float {

            0%,
            100% {
                transform: translate(0, 0) rotate(0deg);
            }

            33% {
                transform: translate(30px, -30px) rotate(120deg);
            }

            66% {
                transform: translate(-20px, 20px) rotate(240deg);
            }
        }

        .hero-content {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .hero-title {
            color: #fff;
            font-size: 48px;
            font-weight: 800;
            margin-bottom: 20px;
            text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
            line-height: 1.2;
        }

        .hero-title i {
            color: #FFD700;
            margin-right: 15px;
            font-size: 44px;
        }

        .hero-subtitle {
            color: rgba(255, 255, 255, 0.95);
            font-size: 20px;
            margin: 0;
            font-weight: 400;
        }

        .hero-description {
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(10px);
            border-radius: 15px;
            padding: 30px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            margin-top: 30px;
        }

        .hero-description p {
            color: rgba(255, 255, 255, 0.95);
            font-size: 17px;
            line-height: 1.9;
            margin-bottom: 15px;
        }

        .hero-description p:last-child {
            margin-bottom: 0;
        }

        .hero-description p i {
            color: #8CB55D;
            margin-right: 10px;
        }

        .form-card {
            background: #fff;
            border-radius: 20px;
            padding: 40px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
            margin-bottom: 30px;
            border: none;
            position: relative;
            /* overflow: hidden; */
        }

        .form-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 5px;
            background: linear-gradient(90deg, #126082 0%, #FF7B07 50%, #2089b6 100%);
        }

        .input-wrapper {
            position: relative;
            margin-bottom: 30px;
        }

        .input-wrapper label {
            text-align: left;
            color: #126082;
            font-weight: 700;
            margin-bottom: 12px;
            display: block;
            font-size: 16px;
        }

        .input-wrapper label i {
            margin-right: 8px;
            color: #FF7B07;
        }

        /* SPF Envelope-From Validator fields - side by side */
        .spf-envelope-fields {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .spf-envelope-field {
            display: flex;
            flex-direction: column;
        }

        .spf-envelope-field label {
            color: #126082;
            font-weight: 700;
            margin-bottom: 12px;
            display: block;
            font-size: 16px;
        }

        .spf-envelope-field label i {
            margin-right: 8px;
            color: #FF7B07;
        }

        .spf-envelope-field .input-modern {
            width: 100%;
        }

        @media (max-width: 768px) {
            .spf-envelope-fields {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        .input-modern {
            border: 2px solid #e9ecef;
            border-radius: 15px;
            padding: 18px 20px;
            font-size: 16px;
            transition: all 0.3s ease;
            width: 100%;
            background: #f8f9fa;
        }

        .input-modern:focus {
            border-color: #126082;
            box-shadow: 0 0 0 4px rgba(18, 96, 130, 0.15);
            outline: none;
            background: #fff;
            transform: translateY(-2px);
        }

        .input-modern::placeholder {
            color: #adb5bd;
        }

        .split-button-container {
            display: flex;
            gap: 0;
            margin-bottom: 25px;
            border-radius: 15px;
            overflow: visible;
            box-shadow: 0 5px 20px rgba(18, 96, 130, 0.2);
            position: relative;
            transition: all 0.3s ease;
        }

        .split-button-container:hover,
        .split-button-container.hover-state {
            box-shadow: 0 8px 25px rgba(18, 96, 130, 0.3);
            transform: translateY(-2px);
        }

        /* When hovering container or has hover-state class, affect both buttons */
        .split-button-container:hover .btn-split-main,
        .split-button-container.hover-state .btn-split-main {
            background: linear-gradient(135deg, #0d4d66 0%, #126082 100%);
        }

        .split-button-container:hover .btn-split-dropdown,
        .split-button-container.hover-state .btn-split-dropdown {
            background: linear-gradient(135deg, #e66a00 0%, #FF7B07 100%);
        }

        .btn-split-main {
            background: linear-gradient(135deg, #126082 0%, #0d4d66 100%);
            border: none;
            border-radius: 0;
            padding: 18px 35px;
            font-weight: 700;
            color: #fff;
            transition: all 0.3s ease;
            flex: 1;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            border-top-left-radius: 15px;
            border-bottom-left-radius: 15px;
        }

        .btn-split-main:hover {
            color: #fff;
        }

        .btn-split-main i {
            font-size: 18px;
        }

        .btn-split-dropdown {
            background: linear-gradient(135deg, #FF7B07 0%, #e66a00 100%);
            border: none;
            border-left: 2px solid rgba(255, 255, 255, 0.3);
            padding: 18px 20px;
            color: #fff;
            transition: all 0.3s ease;
            cursor: pointer;
            border-top-right-radius: 15px;
            border-bottom-right-radius: 15px;
        }

        .btn-split-dropdown:hover {
            color: #fff;
        }

        .btn-split-dropdown:focus {
            box-shadow: none;
        }

        .dropdown-menu {
            border-radius: 16px;
            border: 2px solid #e9ecef;
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
            padding: 20px;
            margin-top: 8px;
            /* min-width: 900px;
            max-width: 1000px; */
            width: auto;
            /* max-height: 75vh; */
            overflow-y: auto;
            overflow-x: hidden;
            background: #fff;
            right: 0;
            left: auto;
        }

        .dropdown-menu.show {
            display: block;
        }

        /* Mega-menu grid layout */
        .mega-menu-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
            width: 100%;
        }

        .mega-menu-column {
            display: flex;
            flex-direction: column;
            gap: 6px;
            min-width: 0;
            /* Prevent overflow */
        }

        .mega-menu-column-title {
            color: #126082;
            font-size: 13px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.8px;
            padding: 10px 12px 8px;
            margin-bottom: 8px;
            border-bottom: 2px solid #e9ecef;
            background: linear-gradient(135deg, #f8f9fa 0%, #f0f7fa 100%);
            border-radius: 6px;
        }

        /* Custom scrollbar for dropdown */
        .dropdown-menu::-webkit-scrollbar {
            width: 8px;
        }

        .dropdown-menu::-webkit-scrollbar-track {
            background: #f1f1f1;
            border-radius: 10px;
        }

        .dropdown-menu::-webkit-scrollbar-thumb {
            background: #126082;
            border-radius: 10px;
        }

        .dropdown-menu::-webkit-scrollbar-thumb:hover {
            background: #0d4d66;
        }

        .dropdown-divider {
            display: none;
            /* Hide dividers in mega-menu */
        }

        /* Ensure dropdown stays positioned correctly */
        .split-button-container {
            z-index: 1;
        }

        .split-button-container .dropdown-menu {
            z-index: 1050;
        }

        .dropdown-item {
            border-radius: 8px;
            padding: 10px 14px;
            transition: all 0.2s ease;
            font-weight: 500;
            color: #495057;
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
            text-decoration: none;
            width: 100%;
            box-sizing: border-box;
        }

        .dropdown-item i {
            font-size: 14px;
            width: 18px;
            text-align: center;
            color: #126082;
            transition: color 0.2s ease;
        }

        .dropdown-item:hover {
            background: linear-gradient(135deg, #f0f7fa 0%, #e8f4f8 100%);
            color: #126082;
            transform: translateX(3px);
            box-shadow: 0 2px 8px rgba(18, 96, 130, 0.1);
        }

        .dropdown-item:hover i {
            color: #FF7B07;
        }

        .dropdown-item.active {
            background: linear-gradient(135deg, #126082 0%, #0d4d66 100%);
            color: #fff;
            box-shadow: 0 3px 10px rgba(18, 96, 130, 0.3);
        }

        .dropdown-item.active i {
            color: #fff;
        }

        /* Responsive adjustments for mega-menu */
        @media (max-width: 1200px) {
            .dropdown-menu {
                min-width: 750px;
                max-width: 850px;
            }
        }

        @media (max-width: 992px) {
            .dropdown-menu {
                min-width: 600px;
                max-width: 700px;
            }

            .mega-menu-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .dropdown-menu {
                min-width: 100%;
                max-width: 100%;
            }

            .mega-menu-grid {
                grid-template-columns: 1fr;
            }
        }

        .btn-modern-secondary {
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            border: 2px solid #e9ecef;
            border-radius: 12px;
            padding: 14px 30px;
            font-weight: 600;
            color: #6c757d;
            transition: all 0.3s ease;
        }

        .btn-modern-secondary:hover {
            background: linear-gradient(135deg, #e9ecef 0%, #dee2e6 100%);
            color: #495057;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }

        .result-section {
            margin-top: 30px;
        }

        .result-card {
            background: linear-gradient(135deg, #f8f9fa 0%, #fff 100%);
            border-radius: 20px;
            padding: 30px;
            margin-bottom: 20px;
            border: 2px solid #e9ecef;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .result-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 5px;
            height: 100%;
            background: linear-gradient(180deg, #126082 0%, #2089b6 100%);
        }

        .result-card.error {
            border-color: #dc3545;
            background: linear-gradient(135deg, #f8d7da 0%, #fff 100%);
        }

        .result-card.error::before {
            background: linear-gradient(180deg, #dc3545 0%, #c82333 100%);
        }

        .result-card.success {
            /* border-color: #28a745; */
            /* background: linear-gradient(180deg, #d4edda 0%, #fff 130px); */
            /* box-shadow: 0 5px 20px #d4edda !important; */
            border: 0px !important;
        }

        .result-card.success::before {
            background: linear-gradient(180deg, #28a745 0%, #218838 100%);
        }

        .result-title {
            color: #126082;
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .result-title i {
            color: #FF7B07;
            font-size: 22px;
        }

        .result-item {
            margin-bottom: 15px;
            padding: 18px;
            background: #fff;
            border-radius: 12px;
            border: 1px solid #e9ecef;
            transition: all 0.3s ease;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            text-align: left;
        }

        .result-item:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            border-color: #126082;
        }

        .result-label {
            font-weight: 600;
            color: #495057;
            margin-right: 10px;
        }

        .result-value {
            color: #6c757d;
            font-family: 'Courier New', monospace;
            word-break: break-all;
            text-align: left;
        }

        .response-time-badge {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 600;
            margin-left: 8px;
        }

        .response-time-very-fast {
            background: #28a745;
            color: #fff;
        }

        .response-time-fast {
            background: #5cb85c;
            color: #fff;
        }

        .response-time-good {
            background: #ffc107;
            color: #000;
        }

        .response-time-slow {
            background: #fd7e14;
            color: #fff;
        }

        .response-time-very-slow {
            background: #dc3545;
            color: #fff;
        }

        .no-data-message {
            text-align: center;
            padding: 50px 40px;
            color: #6c757d;
            font-style: italic;
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            border-radius: 12px;
            border: 2px dashed #dee2e6;
        }

        .no-data-message i {
            font-size: 48px;
            color: #adb5bd;
            margin-bottom: 15px;
            display: block;
        }

        .table-modern {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            margin-top: 15px;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }

        .table-modern th,
        .table-modern td {
            padding: 15px;
            text-align: left;
            border-bottom: 1px solid #e9ecef;
        }

        .table-modern th {
            background: linear-gradient(135deg, #126082 0%, #0d4d66 100%);
            font-weight: 700;
            color: #fff !important;
            text-transform: uppercase;
            font-size: 13px;
            letter-spacing: 0.5px;
        }

        .table-modern tbody tr {
            background: #fff;
            transition: all 0.3s ease;
        }

        .table-modern tbody tr:hover {
            background: linear-gradient(135deg, #f0f7fa 0%, #fff 100%);
            transform: scale(1.01);
        }

        .table-modern tbody tr:last-child td {
            border-bottom: none;
        }

        .badge-modern {
            display: inline-block;
            padding: 2px 8px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 600;
            text-align: left;
        }

        .badge-success {
            background: #28a745;
            color: #fff;
        }

        .badge-warning {
            background: #ffc107;
            color: #000;
        }

        .badge-info {
            background: #17a2b8;
            color: #fff;
        }

        /* Ensure strong tags have visible color */
        .result-item strong,
        .certificate-section strong,
        .headers-section strong {
            color: #495057 !important;
        }

        /* Collapsible section styling */
        [data-bs-toggle="collapse"] {
            user-select: none;
        }

        [data-bs-toggle="collapse"] .chevron-icon {
            transition: transform 0.3s ease;
        }

        /* Certificate Section Highlighting */
        .certificate-section {
            background: linear-gradient(135deg, #e8f4f8 0%, #f0f8fa 100%);
            border: 2px solid #126082;
            border-radius: 16px;
            padding: 20px;
            margin-top: 20px;
            margin-bottom: 20px;
            box-shadow: 0 4px 15px rgba(18, 96, 130, 0.1);
        }

        .certificate-section .section-title {
            color: #126082;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .certificate-section .section-title i {
            color: #FF7B07;
            font-size: 20px;
        }

        /* Headers Section Highlighting */
        .headers-section {
            background: linear-gradient(135deg, #fff8e8 0%, #fffef5 100%);
            border: 2px solid #ffc107;
            border-radius: 16px;
            padding: 20px;
            margin-top: 20px;
            margin-bottom: 20px;
            box-shadow: 0 4px 15px rgba(255, 193, 7, 0.1);
        }

        .headers-section .section-title {
            color: #856404;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .headers-section .section-title i {
            color: #ffc107;
            font-size: 20px;
        }

        /* MX Record Card Layout */
        .mx-records-container {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-top: 20px;
        }

        .mx-record-card {
            background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
            border-radius: 16px;
            padding: 24px;
            border: 2px solid #e9ecef;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .mx-record-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 5px;
            height: 100%;
            background: linear-gradient(180deg, #126082 0%, #2089b6 100%);
        }

        .mx-record-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(18, 96, 130, 0.15);
            border-color: #126082;
        }

        .mx-record-header {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 20px;
            padding-bottom: 20px;
            border-bottom: 2px solid #e9ecef;
        }

        .mx-record-field {
            flex: 1;
            min-width: 200px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .mx-record-field-label {
            font-size: 12px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            color: #6c757d;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .mx-record-field-label i {
            color: #126082;
            font-size: 14px;
        }

        .mx-record-field-value {
            font-size: 16px;
            font-weight: 600;
            color: #212529;
            text-align: left;
            word-break: break-word;
        }

        .mx-record-field-value.priority {
            font-size: 28px;
            font-weight: 800;
            color: #126082;
            line-height: 1;
        }

        .mx-record-field-value.exchange {
            font-family: 'Courier New', monospace;
            background: #f8f9fa;
            padding: 10px 14px;
            border-radius: 8px;
            border: 1px solid #e9ecef;
            color: #495057;
            font-size: 15px;
        }

        .mx-record-field-value.ttl {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .mx-ips-section {
            margin-top: 20px;
        }

        .mx-ips-title {
            font-size: 14px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            color: #495057;
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .mx-ips-title i {
            color: #126082;
            font-size: 16px;
        }

        .mx-ips-container {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .mx-ip-card {
            background: #ffffff;
            border-radius: 12px;
            padding: 18px;
            border: 1px solid #e9ecef;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .mx-ip-card::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            width: 3px;
            height: 100%;
            background: linear-gradient(180deg, #FF7B07 0%, #e66a00 100%);
        }

        .mx-ip-card:hover {
            transform: translateX(5px);
            box-shadow: 0 4px 12px rgba(255, 123, 7, 0.15);
            border-color: #FF7B07;
        }

        .mx-ip-fields {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }

        .mx-ip-field {
            flex: 1;
            min-width: 150px;
            display: flex;
            flex-direction: column;
            justify-content: flex-start;
            align-items: flex-start;
            gap: 6px;
        }

        .mx-ip-field-label {
            font-size: 11px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            color: #6c757d;
        }

        .mx-ip-field-value {
            font-size: 15px;
            font-weight: 600;
            color: #212529;
            text-align: left;
        }

        .mx-ip-field-value.type {
            display: inline-block;
            padding: 6px 12px;
            border-radius: 6px;
            font-size: 13px;
            font-weight: 700;
            background: linear-gradient(135deg, #17a2b8 0%, #138496 100%);
            color: #fff;
            width: fit-content;
        }

        .mx-ip-field-value.ip {
            font-family: 'Courier New', monospace;
            background: #f8f9fa;
            padding: 8px 12px;
            border-radius: 6px;
            border: 1px solid #e9ecef;
            color: #495057;
            font-size: 14px;
            word-break: break-all;
        }

        .mx-ip-field-value.ttl {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .mx-no-ips {
            padding: 20px;
            text-align: center;
            color: #6c757d;
            font-style: italic;
            background: #f8f9fa;
            border-radius: 8px;
            border: 2px dashed #dee2e6;
        }

        @media (max-width: 768px) {
            .mx-record-header {
                flex-direction: column;
            }

            .mx-record-field {
                min-width: 100%;
            }

            .mx-ip-fields {
                flex-direction: column;
            }

            .mx-ip-field {
                min-width: 100%;
            }
        }