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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background-color: #f5f5f5;
            color: #333;
        }

        .header {
            background: white;
            padding: 15px 20px;
            border-bottom: 1px solid #ddd;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: #4a90e2;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
        }

        .header-title {
            font-size: 18px;
            font-weight: 600;
            color: #666;
        }

        .header-actions {
            display: flex;
            gap: 15px;
            align-items: center;
        }

        .notification-btn, .help-btn {
            width: 35px;
            height: 35px;
            border: none;
            border-radius: 50%;
            background: #f0f0f0;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .notification-btn {
            background: #ff4444;
            color: white;
        }

        .container {
            display: flex;
            min-height: calc(100vh - 70px);
        }

        .sidebar {
            width: 200px;
            background: white;
            border-right: 1px solid #ddd;
            padding: 20px 0;
        }

        .nav-item {
            display: flex;
            align-items: center;
            padding: 12px 20px;
            color: #666;
            text-decoration: none;
            gap: 10px;
            border-left: 3px solid transparent;
            transition: all 0.2s;
        }

        .nav-item:hover {
            background: #f8f9fa;
            color: #333;
        }

        .nav-item.active {
            background: #e8f4f8;
            color: #4a90e2;
            border-left-color: #4a90e2;
        }

        .nav-icon {
            width: 20px;
            height: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .main-content {
            flex: 1;
            padding: 30px;
        }

        .contacts-header {
            margin-bottom: 30px;
        }

        .contacts-title {
            font-size: 28px;
            font-weight: 600;
            color: #333;
            margin-bottom: 8px;
        }

        .contacts-subtitle {
            font-size: 16px;
            color: #666;
        }

        .contact-tabs {
            display: flex;
            margin-bottom: 30px;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
        }

        .contact-tab {
            flex: 1;
            padding: 15px 30px;
            background: #e9ecef;
            border: none;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            transition: all 0.2s;
            color: #666;
        }

        .contact-tab.active {
            background: #4ecdc4;
            color: white;
        }

        .contact-tab:hover:not(.active) {
            background: #dee2e6;
        }

        .contact-controls {
            display: flex;
            gap: 15px;
            margin-bottom: 30px;
            align-items: center;
        }

        .search-input {
            flex: 1;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: 5px;
            font-size: 14px;
            background: white;
        }

        .filter-btn {
            background: #4ecdc4;
            color: white;
            border: none;
            padding: 12px 20px;
            border-radius: 5px;
            cursor: pointer;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .add-contact-btn {
            background: transparent;
            color: #f39c12;
            border: 2px solid #f39c12;
            padding: 10px 20px;
            border-radius: 5px;
            cursor: pointer;
            font-weight: 500;
        }

        .add-contact-btn:hover {
            background: #f39c12;
            color: white;
        }

        .contacts-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 20px;
        }

        .contact-card {
            background: white;
            border-radius: 8px;
            padding: 25px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
            transition: all 0.2s;
            cursor: pointer;
            position: relative;
        }

        .contact-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.15);
        }

        .contact-header {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 20px;
        }

        .contact-avatar {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: #e9ecef;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #666;
            font-weight: bold;
            font-size: 18px;
        }

        .contact-name {
            font-size: 18px;
            font-weight: 600;
            color: #333;
        }

        .party-badge {
            position: absolute;
            top: 20px;
            right: 20px;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 12px;
            font-weight: bold;
        }

        .party-badge.republican { background: #e74c3c; }
        .party-badge.democrat { background: #4a90e2; }
        .party-badge.independent { background: #9b59b6; }

        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .contact-info-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #666;
            font-size: 14px;
        }

        .contact-icon {
            width: 16px;
            height: 16px;
            color: #999;
        }

        .contact-value {
            color: #555;
        }

        .contact-email {
            color: #4a90e2;
            text-decoration: none;
        }

        .contact-email:hover {
            text-decoration: underline;
        }

        @media (max-width: 1024px) {
            .contacts-grid {
                grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            }
        }

        @media (max-width: 768px) {
            .container {
                flex-direction: column;
            }
            
            .sidebar {
                width: 100%;
                display: flex;
                overflow-x: auto;
                padding: 10px 0;
            }
            
            .nav-item {
                min-width: 120px;
                text-align: center;
                border-left: none;
                border-bottom: 3px solid transparent;
            }
            
            .nav-item.active {
                border-left: none;
                border-bottom-color: #4a90e2;
            }
            
            .main-content {
                padding: 20px;
            }

            .contact-controls {
                flex-direction: column;
                align-items: stretch;
            }

            .contacts-grid {
                grid-template-columns: 1fr;
            }

            .contact-tabs {
                flex-direction: column;
            }
        }