:root {
            --bg-color: #0d0f12;
            --card-bg: rgba(255, 255, 255, 0.02);
            --border-color: rgba(255, 255, 255, 0.08);
            --text-primary: #f3f4f6;
            --text-secondary: #9ca3af;
            --accent-glow: rgba(99, 102, 241, 0.15);
            --accent-color: #6366f1;
        }

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            background-color: var(--bg-color);
            color: var(--text-primary);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 1.5rem;
            overflow: hidden;
            position: relative;
        }

        /* Sfondo dinamico con bagliore minimale e raffinato */
        .ambient-glow {
            position: absolute;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, var(--accent-glow) 0%, rgba(0,0,0,0) 70%);
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            pointer-events: none;
            z-index: 0;
            animation: pulseGlow 8s ease-in-out infinite alternate;
        }

        @keyframes pulseGlow {
            0% { transform: translate(-50%, -50%) scale(0.8); opacity: 0.5; }
            100% { transform: translate(-50%, -50%) scale(1.2); opacity: 0.9; }
        }

        /* Contenitore principale centrato */
        .container {
            position: relative;
            z-index: 1;
            max-width: 480px;
            width: 100%;
            text-align: center;
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 3rem 2rem;
            border-radius: 16px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
        }

        /* Indicatore di stato pulsante */
        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-color);
            font-size: 0.75rem;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            color: var(--text-secondary);
            margin-bottom: 2rem;
        }

        .dot {
            width: 6px;
            height: 6px;
            background-color: var(--accent-color);
            border-radius: 50%;
            box-shadow: 0 0 8px var(--accent-color);
            animation: blink 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
        }

        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        /* Tipografia */
        h1 {
            font-size: 2rem;
            font-weight: 600;
            letter-spacing: -0.02em;
            margin-bottom: 0.75rem;
            color: var(--text-primary);
        }

        p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            font-weight: 300;
            line-height: 1.6;
            margin-bottom: 2.5rem;
        }

        /* Barra di progresso minimale indeterminata */
        .progress-bar-track {
            width: 100%;
            height: 2px;
            background: var(--border-color);
            border-radius: 2px;
            overflow: hidden;
            position: relative;
        }

        .progress-bar-fill {
            position: absolute;
            top: 0;
            left: 0;
            height: 100%;
            width: 35%;
            background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
            animation: loading 2.2s infinite ease-in-out;
            border-radius: 2px;
        }

        @keyframes loading {
            0% { left: -35%; }
            100% { left: 100%; }
        }

        @media (max-width: 480px) {
            .container {
                padding: 2rem 1.5rem;
            }
            h1 {
                font-size: 1.6rem;
            }
            p {
                font-size: 0.875rem;
            }
        }