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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            padding: 20px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
        }

        .header {
            text-align: center;
            margin-bottom: 40px;
            color: white;
        }

        .header h1 {
            font-size: 2.5rem;
            margin-bottom: 10px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }

        /* Login Screen Styles */
        .login-container {
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: calc(100vh - 200px);
        }

        .login-form {
            background: white;
            padding: 40px;
            border-radius: 15px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.3);
            width: 100%;
            max-width: 400px;
            text-align: center;
        }

        .login-form h2 {
            color: #333;
            margin-bottom: 30px;
            font-size: 1.8rem;
        }

        .form-group {
            margin-bottom: 20px;
            text-align: left;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            color: #555;
            font-weight: 600;
        }

        .form-group input {
            width: 100%;
            padding: 12px 15px;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            font-size: 1rem;
            transition: border-color 0.3s ease;
        }

        .form-group input:focus {
            outline: none;
            border-color: #667eea;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }

        .login-btn {
            width: 100%;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            padding: 15px;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            margin-top: 10px;
        }

        .login-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
        }

        .error-message {
            color: #e74c3c;
            background: #fdf2f2;
            padding: 10px;
            border-radius: 5px;
            margin-bottom: 20px;
            font-size: 0.9rem;
            display: none;
        }

        .user-info {
            background: rgba(255, 255, 255, 0.1);
            padding: 10px 20px;
            border-radius: 25px;
            color: white;
            margin-bottom: 20px;
            display: inline-block;
        }

        .logout-btn {
            background: rgba(255, 255, 255, 0.2);
            color: white;
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 8px 16px;
            border-radius: 20px;
            cursor: pointer;
            font-size: 0.9rem;
            margin-left: 15px;
            transition: all 0.3s ease;
        }

        .logout-btn:hover {
            background: rgba(255, 255, 255, 0.3);
        }

        /* Dashboard styles (existing styles) */
        .dashboard {
            display: none;
        }

        .grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            margin-bottom: 40px;
        }

        .card {
            background: white;
            border-radius: 15px;
            padding: 30px;
            text-align: center;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
            transition: all 0.3s ease;
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }

        .card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, #667eea, #764ba2);
        }

        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.3);
        }

        .card h3 {
            font-size: 1.3rem;
            margin-bottom: 20px;
            color: #333;
            line-height: 1.4;
        }

        .btn {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            padding: 12px 30px;
            border-radius: 25px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            transition: all 0.3s ease;
        }

        .btn:hover {
            transform: scale(1.05);
            box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
        }

        /* Modal Styles */
        .modal {
            display: none;
            position: fixed;
            z-index: 1000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0,0,0,0.5);
            backdrop-filter: blur(5px);
        }

        .modal-content {
            background-color: white;
            margin: 2% auto;
            padding: 0;
            border-radius: 15px;
            width: 90%;
            max-width: 800px;
            max-height: 90vh;
            overflow: hidden;
            animation: modalSlideIn 0.3s ease;
        }

        .modal-content.iframe-modal {
            max-width: 100vw;
            width: 100vw;
            height: 100vh;
            margin: 0;
            border-radius: 0;
        }

        .iframe-container iframe {
            width: 100%;
            height: 700px;
            border: none;
            border-radius: 0 0 15px 15px;
        }

        @keyframes modalSlideIn {
            from {
                opacity: 0;
                transform: translateY(-50px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .modal-header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .modal-header h2 {
            flex-grow: 1;
            font-size: 1.5rem;
        }

        .close {
            color: white;
            font-size: 28px;
            font-weight: bold;
            cursor: pointer;
            padding: 0 10px;
        }

        .close:hover {
            opacity: 0.7;
        }

        .search-container {
            padding: 20px;
            border-bottom: 1px solid #eee;
        }

        .search-box {
            width: 100%;
            padding: 15px;
            border: 2px solid #e0e0e0;
            border-radius: 10px;
            font-size: 1rem;
            transition: border-color 0.3s ease;
        }

        .search-box:focus {
            outline: none;
            border-color: #667eea;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }

        .modal-body {
            padding: 20px;
            max-height: 400px;
            overflow-y: auto;
        }

        .contact-item {
            padding: 15px;
            border-bottom: 1px solid #f0f0f0;
            transition: background-color 0.3s ease;
        }

        .contact-item:hover {
            background-color: #f8f9ff;
        }

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

        .contact-name {
            font-weight: 600;
            color: #333;
            margin-bottom: 5px;
        }

        .contact-info {
            color: #666;
            font-size: 0.9rem;
        }

        .no-results {
            text-align: center;
            padding: 40px;
            color: #666;
        }

        .demo-credentials {
            background: rgba(255, 255, 255, 0.1);
            color: white;
            padding: 20px;
            border-radius: 10px;
            margin-bottom: 30px;
            font-size: 0.9rem;
        }

        .demo-credentials h4 {
            margin-bottom: 10px;
            color: #fff;
        }

        .demo-credentials p {
            margin: 5px 0;
        }

        @media (max-width: 768px) {
            .header h1 {
                font-size: 2rem;
            }
            
            .grid {
                grid-template-columns: 1fr;
            }
            
            .modal-content {
                width: 95%;
                margin: 5% auto;
            }
            
            .login-form {
                padding: 30px 20px;
            }
        }