:root {
            --neon-purple: #DA00FF;
            --neon-yellow: #FFEA00;
            --neon-green: #00FF88;
            --dark-bg: #0A0E27;
            --dark-surface: #151A36;
            --dark-surface-2: #1F2541;
            --text-primary: #FFFFFF;
            --text-secondary: #A8B2D1;
            --openai-color: #10A37F;
            --anthropic-color: #D4A373;
            --deepseek-color: #5865F2;
            --gemini-color: #4285F4;
            --perplexity-color: #20B2AA;
            --synthesis-gradient: linear-gradient(135deg, var(--neon-purple), var(--neon-green));
        }

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

        body {
            font-family: 'Poppins', sans-serif;
            background: var(--dark-bg);
            color: var(--text-primary);
            overflow-x: hidden;
            position: relative;
        }

        select {
            font-family: 'Poppins', sans-serif !important;
        }

        button, input, optgroup, select, textarea {
            font-family: 'Poppins', sans-serif !important;
        }
        
        /* Animated Background */
        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: 
                radial-gradient(circle at 20% 50%, rgba(218, 0, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(0, 255, 136, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 40% 20%, rgba(255, 234, 0, 0.1) 0%, transparent 50%);
            z-index: -1;
            animation: floatingGradient 20s ease infinite;
        }

        @keyframes floatingGradient {
            0%, 100% { transform: translate(0, 0) rotate(0deg); }
            33% { transform: translate(-20px, -20px) rotate(120deg); }
            66% { transform: translate(20px, -10px) rotate(240deg); }
        }

        /* Sidenav Styles */

        .logo-container {
            display: flex;
            align-items: center;
            gap: 12px;
            position: relative;
            z-index: 1;
        }

        .logo-container i {
            font-size: 32px;
            color: white;
            filter: drop-shadow(0 0 20px rgba(255, 255, 255, 0.5));
        }

        .logo-text {
            font-family: 'Space Grotesk', sans-serif;
            font-size: 28px;
            font-weight: 700;
            color: white;
            text-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
        }


        .model-selection-container {
            margin-bottom: 30px;
        }

        .model-card {
            background: var(--dark-surface-2);
            border-radius: 12px;
            padding: 12px;
            margin-bottom: 12px;
            border: 1px solid transparent;
            transition: all 0.3s ease;
        }

        .model-card:hover {
            border-color: var(--neon-purple);
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(218, 0, 255, 0.2);
        }

        .model-label {
            font-size: 11px;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--text-secondary);
            margin-bottom: 8px;
            font-weight: 600;
        }

        .model-select {
            background: var(--dark-bg) !important;
            color: var(--text-primary) !important;
            border: 1px solid rgba(255, 255, 255, 0.1) !important;
            border-radius: 8px !important;
            padding: 8px 12px !important;
            font-size: 14px !important;
            transition: all 0.3s ease;
        }

        .model-select:focus {
            border-color: var(--neon-purple) !important;
            box-shadow: 0 0 0 1px var(--neon-purple) !important;
        }

        /* Web Search Toggle */
        .web-search-toggle {
            background: var(--dark-surface-2);
            border-radius: 12px;
            padding: 16px;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .switch label input[type=checkbox]:checked+.lever {
            background-color: var(--neon-green) !important;
        }

        .switch label input[type=checkbox]:checked+.lever:after {
            background-color: white !important;
        }

        /* Chat History */
        .chat-history-container {
            margin-top: 24px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .chat-history-title {
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--neon-yellow);
            margin-bottom: 16px;
            font-weight: 600;
        }

        .chat-item {
            padding: 12px 16px;
            border-radius: 8px;
            margin-bottom: 8px;
            background: var(--dark-surface-2);
            transition: all 0.3s ease;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .chat-item:hover {
            background: rgba(218, 0, 255, 0.1);
            transform: translateX(4px);
        }

        .chat-item.active {
            background: var(--synthesis-gradient);
            color: white;
            font-weight: 500;
        }

        .chat-item a {
            color: inherit;
            text-decoration: none;
            flex: 1;
        }

        /* Main Content Area */
        .main-content-wrapper {
            margin-left: 320px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* Header */
        .chat-header {
            background: var(--dark-surface);
            padding: 24px 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            justify-content: space-between;
            align-items: center;
            backdrop-filter: blur(10px);
        }

        .header-title h4 {
            font-family: 'Space Grotesk', sans-serif;
            font-weight: 600;
            margin: 0;
            background: var(--synthesis-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .header-subtitle {
            color: var(--text-secondary);
            font-size: 14px;
            margin-top: 4px;
        }

        .header-actions {
            display: flex;
            gap: 12px;
        }

        .action-btn {
            background: var(--dark-surface-2) !important;
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-primary) !important;
            border-radius: 8px;
            padding: 8px 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: all 0.3s ease;
        }

        .action-btn:hover {
            border-color: var(--neon-purple);
            box-shadow: 0 0 20px rgba(218, 0, 255, 0.3);
        }

        /* Chat Container */
        .chat-container {
            flex: 0 1 auto;
            padding: 32px;
            padding-bottom: 80px;
            overflow: visible;
        }

        /* Message Styles */
.user-message {
    background: linear-gradient(135deg, var(--neon-purple), var(--neon-green));
    color: white;
    padding: 20px 24px;
    border-radius: 20px 20px 4px 20px;
    margin: 24px auto;
    max-width: 70%;
    margin-left: auto;
    box-shadow: 0 8px 32px rgba(218, 0, 255, 0.3);
    animation: slideInRight 0.3s ease;
    clear: both; /* evita sovrapposizioni con colonne float */
}

        @keyframes slideInRight {
            from {
                opacity: 0;
                transform: translateX(20px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        /* AI Response Grid */
        .ai-responses-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            margin: 32px 0;
        }

        .ai-response-row {
            margin-bottom: 32px;
        }

        .ai-response-wrapper {
            margin-bottom: 24px;
        }

        .ai-response-wrapper .ai-response-card {
            width: 100%;
        }

        .ai-response-wrapper > a {
            width: 100%;
            display: block;
        }

        .ai-response-card {
            background: var(--dark-surface);
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all 0.3s ease;
            cursor: pointer;
            animation: fadeInUp 0.4s ease;
        }

        .ai-response-card.openai {
            background: linear-gradient(160deg, rgba(16, 163, 127, 0.16), rgba(21, 26, 54, 0.94));
            border-color: rgba(16, 163, 127, 0.26);
        }

        .ai-response-card.anthropic {
            background: linear-gradient(160deg, rgba(212, 163, 115, 0.18), rgba(21, 26, 54, 0.94));
            border-color: rgba(212, 163, 115, 0.24);
        }

        .ai-response-card.deepseek {
            background: linear-gradient(160deg, rgba(88, 101, 242, 0.18), rgba(21, 26, 54, 0.94));
            border-color: rgba(88, 101, 242, 0.24);
        }

        .ai-response-card.gemini {
            background: linear-gradient(160deg, rgba(66, 133, 244, 0.18), rgba(21, 26, 54, 0.94));
            border-color: rgba(66, 133, 244, 0.24);
        }

        .ai-response-card.perplexity {
            background: linear-gradient(160deg, rgba(32, 178, 170, 0.18), rgba(21, 26, 54, 0.94));
            border-color: rgba(32, 178, 170, 0.24);
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .ai-response-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
        }

        .ai-response-card.openai:hover { border-color: var(--openai-color); box-shadow: 0 12px 32px rgba(16, 163, 127, 0.3); }
        .ai-response-card.anthropic:hover { border-color: var(--anthropic-color); box-shadow: 0 12px 32px rgba(212, 163, 115, 0.3); }
        .ai-response-card.deepseek:hover { border-color: var(--deepseek-color); box-shadow: 0 12px 32px rgba(88, 101, 242, 0.3); }
        .ai-response-card.gemini:hover { border-color: var(--gemini-color); box-shadow: 0 12px 32px rgba(66, 133, 244, 0.3); }
        .ai-response-card.perplexity:hover { border-color: var(--perplexity-color); box-shadow: 0 12px 32px rgba(32, 178, 170, 0.3); }

        .ai-card-header {
            padding: 16px 20px;
            background: var(--dark-surface-2);
            display: flex;
            align-items: center;
            gap: 12px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .ai-logo-wrapper {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.05);
        }

        .ai-logo-wrapper.openai { background: rgba(16, 163, 127, 0.12); }
        .ai-logo-wrapper.anthropic { background: rgba(212, 163, 115, 0.12); }
        .ai-logo-wrapper.deepseek { background: rgba(88, 101, 242, 0.12); }
        .ai-logo-wrapper.gemini { background: rgba(66, 133, 244, 0.12); }
        .ai-logo-wrapper.perplexity { background: rgba(32, 178, 170, 0.12); }

        .ai-model-name {
            font-weight: 600;
            font-size: 14px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .ai-header {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px solid var(--border-color);
        }

        .ai-logo {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: white;
            font-size: 14px;
        }

        .openai-logo { background: linear-gradient(135deg, #10a37f, #1a7f64); }
        .anthropic-logo { background: linear-gradient(135deg, #d4a574, #c19660); }
        .deepseek-logo { background: linear-gradient(135deg, #4f46e5, #6366f1); }
        .gemini-logo { background: linear-gradient(135deg, #ea4335, #4285f4); }
        .synthesis-logo { background: linear-gradient(135deg, #8b5cf6, #7c3aed); }

        .ai-name {
            font-weight: 600;
            font-size: 16px;
        }

        .ai-content {
            font-size: 15px;
            line-height: 1.6;
            color: var(--text-primary);
        }


        .ai-card-content {
            padding: 20px;
            max-height: 300px;
            overflow-y: auto;
            font-size: 14px;
            line-height: 1.6;
            color: rgba(232, 235, 252, 0.92);
            background-color: #ff00fa12 !important;
        }

        /* Synthesis Card */
        .synthesis-card {
            background: var(--dark-surface);
            border: 2px solid transparent;
            background-image: 
                linear-gradient(var(--dark-surface), var(--dark-surface)),
                var(--synthesis-gradient);
            background-origin: border-box;
            background-clip: padding-box, border-box;
            border-radius: 20px;
            margin: 32px 0;
            overflow: hidden;
            animation: pulseGlow 3s ease infinite;
        }

        @keyframes pulseGlow {
            0%, 100% { box-shadow: 0 0 30px rgba(218, 0, 255, 0.3); }
            50% { box-shadow: 0 0 50px rgba(0, 255, 136, 0.3); }
        }

        .synthesis-header {
            background: var(--synthesis-gradient);
            padding: 20px 24px;
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .synthesis-icon {
            width: 48px;
            height: 48px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            backdrop-filter: blur(10px);
        }

        .synthesis-icon i {
            font-size: 28px;
            color: white;
            filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.5));
        }

        .synthesis-title {
            flex: 1;
        }

        .synthesis-title h5 {
            margin: 0;
            color: white;
            font-family: 'Space Grotesk', sans-serif;
            font-weight: 600;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        }

        .synthesis-subtitle {
            color: rgba(255, 255, 255, 0.9);
            font-size: 12px;
            margin-top: 4px;
        }

        .synthesis-content {
            padding: 32px;
            background: var(--dark-surface);
            font-size: 16px;
            line-height: 1.8;
            position: relative;
        }

        .copy-synthesis-btn {
            position: absolute;
            top: 16px;
            right: 16px;
            background: var(--dark-surface-2) !important;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            padding: 8px;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .copy-synthesis-btn:hover {
            background: var(--neon-purple) !important;
            border-color: var(--neon-purple);
            transform: scale(1.1);
        }

        .copy-synthesis-btn i {
            color: var(--text-primary);
            font-size: 18px;
        }

        /* Input Area */
        .input-area {
            position: fixed;
            bottom: 0;
            left: 320px;
            right: 0;
            background: var(--dark-surface);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 32px;
            backdrop-filter: blur(10px);
            z-index: 100;
        }

        .input-wrapper {
            display: flex;
            gap: 16px;
            align-items: center;
        }

        .prompt-input-container {
            flex: 1;
            position: relative;
        }

        .prompt-input {
            width: 100%;
            background: var(--dark-surface-2);
            border: 2px solid rgba(255, 255, 255, 0.1);
            border-radius: 12px;
            padding: 16px 20px;
            padding-right: 50px;
            color: var(--text-primary);
            font-size: 16px;
            transition: all 0.3s ease;
        }

        .prompt-input:focus {
            outline: none;
            border-color: var(--neon-purple);
            box-shadow: 0 0 20px rgba(218, 0, 255, 0.3);
        }

        .prompt-input::placeholder {
            color: var(--text-secondary);
        }

        .file-upload-btn {
            position: absolute;
            right: 12px;
            top: 50%;
            transform: translateY(-50%);
            background: transparent !important;
            border: none;
            color: var(--text-secondary);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .file-upload-btn:hover {
            color: var(--neon-yellow);
            transform: translateY(-50%) scale(1.1);
        }

        .send-btn {
            background: var(--synthesis-gradient) !important;
            border: none;
            border-radius: 12px;
            padding: 16px 32px;
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            transition: all 0.3s ease;
            box-shadow: 0 4px 20px rgba(218, 0, 255, 0.3);
        }

        .send-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(218, 0, 255, 0.5);
        }

        .send-btn i {
            font-size: 20px;
        }

        /* File Preview */
        .file-preview {
            display: flex;
            gap: 8px;
            margin-top: 12px;
            flex-wrap: wrap;
        }

        .file-chip {
            background: var(--dark-surface-2);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            padding: 6px 12px;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            color: var(--text-secondary);
        }

        .file-chip i {
            font-size: 14px;
            color: var(--neon-yellow);
        }

        /* Drop Zone */
        .drop-zone {
            position: fixed;
            top: 0;
            left: 320px;
            right: 0;
            bottom: 0;
            background: rgba(10, 14, 39, 0.95);
            backdrop-filter: blur(10px);
            display: none;
            align-items: center;
            justify-content: center;
            z-index: 1000;
        }

        .drop-zone.active {
            display: flex;
        }

        .drop-zone-content {
            text-align: center;
            padding: 48px;
            border: 3px dashed var(--neon-purple);
            border-radius: 20px;
            background: var(--dark-surface);
        }

        .drop-zone-content i {
            font-size: 64px;
            color: var(--neon-purple);
            margin-bottom: 24px;
            filter: drop-shadow(0 0 20px rgba(218, 0, 255, 0.5));
        }
        @media (max-width: 600px) {
            .chat-container {
                padding: 24px 16px 140px;
            }

            .ai-response-row {
                margin-bottom: 16px;
            }

            .ai-response-wrapper {
                margin-bottom: 16px;
            }

            .ai-response-wrapper .ai-response-card {
                width: 100%;
            }

            .synthesis-wrapper {
                margin-bottom: 24px;
            }

            .main-content-wrapper {
                margin-left: 0;
            }

            .input-area {
                left: 0;
            }

            .drop-zone {
                left: 0;
            }

            .ai-responses-grid {
                grid-template-columns: 1fr;
            }
        }


        /* Loading Animation */
        .loading-dots {
            display: inline-flex;
            gap: 4px;
        }

        .loading-dots span {
            width: 8px;
            height: 8px;
            background: var(--neon-purple);
            border-radius: 50%;
            animation: bounce 1.4s infinite ease-in-out;
        }

        .loading-dots span:nth-child(1) { animation-delay: -0.32s; }
        .loading-dots span:nth-child(2) { animation-delay: -0.16s; }
        .loading-dots span:nth-child(3) { animation-delay: 0; }

        @keyframes bounce {
            0%, 60%, 100% {
                transform: scale(1);
                opacity: 1;
            }
            30% {
                transform: scale(1.5);
                opacity: 0.7;
            }
        }
        /* Message Modal */
        .modal {
            width:fit-content !important;
            background-color: transparent !important;
        }

        .modal .modal-content {
            background: var(--dark-surface);
            border-radius: 16px;
            padding: 0px;
            color: var(--text-primary);
            max-width: 600px;
            margin: 32px auto;
        }

.message-content {
    color:#f2f2f2;
}
/* .message-content think {
    font-style: italic;
    color: #bbb;
    font-size: 10px;
    } */
     
/* Stile specifico per il testo del messaggio utente, più compatto */
.user-message-content {
    color: #fff;
    font-size: 14px;
    line-height: 1.6;
}

        .message-content h1 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .message-content h2 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .message-content h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .message-content h4,
        .message-content h5,
        .message-content h6 {
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .message-content p {
            font-size: 14px;
            line-height: 1.6;
        }

        .excel-preview-table table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 12px;
            font-size: 10px !important;
        }

        .excel-preview-table td, .excel-preview-table th {
            padding: 7px 5px;
            text-align: left;
        }