* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            color: #333;
            line-height: 1.6;
            padding: 5px;
            min-height: 100vh;
        }

        .main-application-container {
            max-width: 720px;
            margin: 0 auto;
            background-color: #ffffff;
            border-radius: 20px;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
            overflow: hidden;
            border: 1px solid #e1e5eb;
        }

        .application-header {
            background: linear-gradient(to right, #2c3e50, #4a6491);
            color: white;
            padding: 30px 25px;
            text-align: center;
        }

        .application-main-title {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            letter-spacing: -0.5px;
        }

        .application-subtitle {
            font-size: 1.1rem;
            opacity: 0.9;
            font-weight: 300;
        }

        .content-organizer {
            padding: 30px 25px;
        }

        .service-features-container {
            background: #f8f9fa;
            border-radius: 15px;
            padding: 25px;
            margin-bottom: 30px;
            border: 1px solid #e9ecef;
        }

        .service-features-title {
            font-size: 1.6rem;
            color: #2c3e50;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .service-features-title i {
            color: #3498db;
        }

        .service-features-list {
            list-style: none;
        }

        .service-feature-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
            padding: 18px 0;
            border-bottom: 1px dashed #dee2e6;
        }

        .service-feature-item:last-child {
            border-bottom: none;
        }

        .service-feature-icon {
            background: #3498db;
            color: white;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1.2rem;
        }

        .service-feature-text {
            flex: 1;
        }

        .service-feature-main {
            font-weight: 600;
            color: #2c3e50;
            margin-bottom: 5px;
            font-size: 1.1rem;
        }

        .service-feature-desc {
            color: #6c757d;
            font-size: 0.95rem;
        }

        .analysis-interface-section {
            background: #ffffff;
            border-radius: 15px;
            padding: 25px;
            border: 1px solid #e9ecef;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }

        .analysis-interface-title {
            font-size: 1.6rem;
            color: #2c3e50;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .analysis-interface-title i {
            color: #2ecc71;
        }

        .code-input-interface {
            margin-bottom: 25px;
        }

        .input-interface-label {
            display: block;
            color: #495057;
            margin-bottom: 12px;
            font-weight: 500;
        }

        .input-interface-wrapper {
            display: none;
            gap: 10px;
        }

        .code-input-field {
            flex: 1;
            padding: 15px 18px;
            border: 2px solid #ced4da;
            border-radius: 10px;
            font-size: 1.1rem;
            transition: all 0.3s;
        }

        .code-input-field:focus {
            outline: none;
            border-color: #3498db;
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
        }

        .submit-analysis-button {
            background: linear-gradient(to right, #3498db, #2980b9);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s;
            white-space: nowrap;
        }

        .submit-analysis-button:hover {
            background: linear-gradient(to right, #2980b9, #2573a7);
            transform: translateY(-2px);
            box-shadow: 0 7px 14px rgba(52, 152, 219, 0.3);
        }

        .submit-analysis-button:active {
            transform: translateY(0);
        }

        .submit-analysis-button:disabled {
            opacity: 0.7;
            cursor: not-allowed;
            transform: none !important;
        }

        .expert-contact-promo {
            display: block;
            background: linear-gradient(to right, #2ecc71, #27ae60);
            color: white;
            text-align: center;
            padding: 18px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 1.1rem;
            text-decoration: none;
            position: relative;
            overflow: hidden;
            transition: all 0.3s;
            margin-top: 20px;
        }

        .expert-contact-promo:hover {
            background: linear-gradient(to right, #27ae60, #219653);
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(46, 204, 113, 0.3);
        }

        .promo-pulse-indicator {
            position: absolute;
            top: 50%;
            left: 20px;
            transform: translateY(-50%);
            width: 12px;
            height: 12px;
            background-color: #fff;
            border-radius: 50%;
            animation: pulse-animation 1.5s infinite;
        }

        @keyframes pulse-animation {
            0% { box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.7); }
            70% { box-shadow: 0 0 0 10px rgba(255, 255, 255, 0); }
            100% { box-shadow: 0 0 0 0 rgba(255, 255, 255, 0); }
        }

        .footer-navigation-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 20px;
            padding: 25px;
            border-top: 1px solid #e9ecef;
            background-color: #f8f9fa;
        }

        .footer-navigation-link {
            color: #3498db;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
        }

        .footer-navigation-link:hover {
            color: #2980b9;
            text-decoration: underline;
        }

        .application-footer {
            text-align: center;
            padding: 25px;
            background: #2c3e50;
            color: #ecf0f1;
        }

        .application-footer p {
            margin-bottom: 10px;
            font-size: 0.95rem;
            line-height: 1.5;
        }

        .copyright-statement {
            font-size: 0.9rem;
            opacity: 0.8;
            margin-top: 15px;
        }

        /* Modal Styles */
        .modal-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.7);
            z-index: 1000;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }

        .modal-content-container {
            background: white;
            border-radius: 15px;
            width: 100%;
            max-width: 700px;
            max-height: 85vh;
            overflow-y: auto;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
            animation: modal-appear 0.4s ease;
        }

        @keyframes modal-appear {
            from { opacity: 0; transform: translateY(-30px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .modal-header-section {
            background: linear-gradient(to right, #2c3e50, #4a6491);
            color: white;
            padding: 20px 25px;
            border-radius: 15px 15px 0 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .modal-title-heading {
            font-size: 1.7rem;
            font-weight: 600;
        }

        .modal-close-button {
            background: none;
            border: none;
            color: white;
            font-size: 2rem;
            cursor: pointer;
            line-height: 1;
            transition: opacity 0.3s;
            padding: 0;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
        }

        .modal-close-button:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }

        .modal-body-content {
            padding: 25px;
        }

        .modal-body-content h3 {
            color: #2c3e50;
            margin: 20px 0 10px 0;
            font-size: 1.3rem;
        }

        .modal-body-content p, .modal-body-content li {
            margin-bottom: 10px;
            color: #495057;
        }

        .modal-body-content ul {
            padding-left: 20px;
        }

        .modal-body-content li {
            margin-bottom: 8px;
        }

        .warning-notification-box {
            background: #fff3cd;
            border: 1px solid #ffeaa7;
            border-radius: 10px;
            padding: 18px;
            margin: 20px 0;
        }

        .warning-notification-title {
            color: #856404;
            font-weight: 600;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.1rem;
        }

        .warning-notification-title i {
            font-size: 1.2rem;
        }

        .alert-notification {
            position: fixed;
            top: 20px;
            right: 20px;
            z-index: 9999;
            animation: slide-in-notification 0.3s ease;
            max-width: 400px;
            width: calc(100% - 40px);
        }

        @keyframes slide-in-notification {
            from { transform: translateX(100%); opacity: 0; }
            to { transform: translateX(0); opacity: 1; }
        }

        @keyframes slide-out-notification {
            from { transform: translateX(0); opacity: 1; }
            to { transform: translateX(100%); opacity: 0; }
        }

        .alert-content-wrapper {
            background: white;
            border-radius: 12px;
            padding: 18px;
            border-left: 5px solid #3498db;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
            border: 1px solid #e1e5eb;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .alert-content-wrapper.success { border-left-color: #2ecc71; }
        .alert-content-wrapper.warning { border-left-color: #f39c12; }

        .alert-icon-container {
            font-size: 1.6rem;
            color: #3498db;
            flex-shrink: 0;
        }

        .alert-icon-container.success { color: #2ecc71; }
        .alert-icon-container.warning { color: #f39c12; }

        .alert-message-text {
            flex: 1;
            color: #2c3e50;
            line-height: 1.5;
            font-size: 0.95rem;
        }

        .alert-close-button {
            background: none;
            border: none;
            color: #95a5a6;
            font-size: 1.4rem;
            cursor: pointer;
            line-height: 1;
            padding: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            transition: all 0.3s;
            flex-shrink: 0;
        }

        .alert-close-button:hover {
            background-color: #f8f9fa;
            color: #e74c3c;
        }

        /* Responsive adjustments */
        @media (max-width: 768px) {
            body {
                padding: 10px;
            }

            .main-application-container {
                border-radius: 15px;
            }

            .application-main-title {
                font-size: 1.8rem;
            }

            .content-organizer {
                padding: 20px 15px;
            }

            .service-features-container,
            .analysis-interface-section {
                padding: 20px;
            }

            .service-feature-item {
                flex-direction: column;
                gap: 10px;
                padding: 15px 0;
            }

            .input-interface-wrapper {
                flex-direction: column;
            }

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

            .footer-navigation-links {
                gap: 15px;
                padding: 20px 15px;
            }

            .modal-content-container {
                max-height: 90vh;
            }
        }