/* Research Radar specific styles */
        .radar-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 2rem;
        }

        .input-section {
            background: white;
            border-radius: 20px;
            padding: 2rem;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            margin-bottom: 2rem;
        }

        .input-header {
            margin-bottom: 1.5rem;
        }

        .input-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 0.5rem;
        }

        .input-subtitle {
            color: var(--gray-600);
            font-size: 1.1rem;
        }

        .search-input-group {
            position: relative;
            margin-bottom: 1.5rem;
        }

        .search-textarea {
            width: 100%;
            padding: 1rem 3rem 1rem 1rem;
            border: 2px solid var(--gray-200);
            border-radius: 12px;
            font-size: 1rem;
            resize: vertical;
            min-height: 100px;
            transition: all 0.3s ease;
        }

        .search-textarea:focus {
            outline: none;
            border-color: var(--accent-blue);
            box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.1);
        }

        .analyze-btn {
            position: absolute;
            right: 0.5rem;
            bottom: 0.5rem;
            padding: 0.75rem 1.5rem;
            background: var(--secondary-color);
            color: white;
            border: none;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .analyze-btn:hover {
            background: var(--secondary-dark);
            transform: translateY(-1px);
        }

        /* Topics section */
        .topics-section {
            display: none;
            background: rgba(74, 158, 255, 0.05);
            border-radius: 12px;
            padding: 1.5rem;
            margin-bottom: 2rem;
        }

        .topics-header {
            font-weight: 600;
            color: var(--primary-color);
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .topic-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            margin-bottom: 1.5rem;
        }

        .topic-tag {
            padding: 0.5rem 1rem;
            background: white;
            border: 2px solid var(--gray-200);
            border-radius: 20px;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
        }

        .topic-tag:hover {
            border-color: var(--accent-blue);
            transform: translateY(-1px);
        }

        .topic-tag.selected {
            background: var(--accent-blue);
            color: white;
            border-color: var(--accent-blue);
        }

        .topic-tag.selected::after {
            content: '✓';
            position: absolute;
            top: -8px;
            right: -8px;
            background: var(--success);
            color: white;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
        }

        /* Radar visualization */
        .radar-visualization {
            display: none;
            background: white;
            border-radius: 20px;
            padding: 2rem;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            margin-bottom: 2rem;
        }

        .radar-header {
            text-align: center;
            margin-bottom: 2rem;
        }

        .radar-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 0.5rem;
        }

        .radar-subtitle {
            color: var(--gray-600);
        }

        .radar-legend {
            display: flex;
            justify-content: center;
            gap: 2rem;
            margin-bottom: 2rem;
            flex-wrap: wrap;
        }

        .legend-item {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .legend-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
        }

        .radar-svg-container {
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 600px;
            position: relative;
        }

        #radarChart {
            max-width: 100%;
            height: auto;
        }

        /* Tooltip */
        .radar-tooltip {
            position: absolute;
            background: rgba(0, 0, 0, 0.9);
            color: white;
            padding: 0.75rem 1rem;
            border-radius: 8px;
            font-size: 0.875rem;
            pointer-events: none;
            opacity: 0;
            transition: opacity 0.3s ease;
            z-index: 1000;
            max-width: 300px;
        }

        .radar-tooltip.show {
            opacity: 1;
        }

        .tooltip-title {
            font-weight: 600;
            margin-bottom: 0.25rem;
        }

        .tooltip-details {
            font-size: 0.75rem;
            opacity: 0.9;
        }

        /* Premium section */
        .premium-section {
            display: none;
            background: var(--light-green) !important;
            border: 2px solid var(--secondary-color);
            border-radius: 20px;
            padding: 2rem;
            margin-bottom: 2rem;
            position: relative;
            overflow: hidden;
        }

        .premium-badge {
            position: absolute;
            top: 1rem;
            right: 1rem;
            background: var(--secondary-color);
            color: white;
            padding: 0.25rem 0.75rem;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }

        .premium-content {
            text-align: center;
            padding: 2rem;
            background: var(--bg-green) !important;
        }

        .premium-icon {
            font-size: 3rem;
            margin-bottom: 1rem;
        }

        .premium-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 0.5rem;
        }

        .premium-description {
            color: var(--gray-600);
            margin-bottom: 1.5rem;
        }

        .premium-features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
            margin-bottom: 2rem;
            text-align: left;
        }

        .premium-feature {
            display: flex;
            align-items: start;
            gap: 0.5rem;
        }

        .premium-feature-icon {
            color: var(--success);
            margin-top: 0.25rem;
        }

        .upgrade-btn {
            padding: 1rem 2rem;
            background: var(--secondary-color);
            color: white;
            border: none;
            border-radius: 12px;
            font-weight: 600;
            font-size: 1.1rem;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .upgrade-btn:hover {
            background: var(--secondary-dark);
            transform: translateY(-2px);
        }

        /* Results list */
        .results-list {
            margin-top: 2rem;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 1rem;
        }

        .result-card {
            background: var(--gray-50);
            border-radius: 12px;
            padding: 1.5rem;
            border: 2px solid transparent;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .result-card:hover {
            border-color: var(--accent-blue);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }

        .result-title {
            font-weight: 600;
            color: var(--primary-color);
            margin-bottom: 0.5rem;
        }

        .result-metrics {
            display: flex;
            gap: 1rem;
            margin-top: 0.75rem;
            font-size: 0.875rem;
        }

        .metric {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            color: var(--gray-600);
        }

        .metric-icon {
            font-size: 1rem;
        }

        /* Loading states */
        .loading {
            display: inline-block;
            width: 20px;
            height: 20px;
            border: 3px solid var(--gray-200);
            border-radius: 50%;
            border-top-color: var(--secondary-color);
            animation: spin 1s linear infinite;
        }

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

        /* Action buttons */
        .action-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            margin-top: 2rem;
        }

        .btn {
            padding: 0.75rem 1.5rem;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            border: none;
            transition: all 0.3s ease;
        }

        .btn-primary {
            background: var(--secondary-color);
            color: white;
        }

        .btn-primary:hover {
            background: var(--secondary-dark);
        }

        .btn-secondary {
            background: white;
            color: var(--primary-color);
            border: 2px solid var(--gray-200);
        }

        .btn-secondary:hover {
            border-color: var(--primary-color);
        }

        /* Responsive */
        @media (max-width: 768px) {
            .radar-container {
                padding: 1rem;
            }

            .radar-svg-container {
                min-height: 400px;
            }

            .premium-features {
                grid-template-columns: 1fr;
            }
        }