:root{--primary:#4f46e5;--primary-hover:#4338ca;--bg-gradient-start:#f8fafc;--bg-gradient-end:#e2e8f0;--chat-bg:#ffffffd9;--text-main:#1e293b;--text-muted:#64748b;--bubble-user:#4f46e5;--bubble-bot:#fff;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -1px #0000000f;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -2px #0000000d}*{box-sizing:border-box;margin:0;padding:0}body{background:linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);color:var(--text-main);-webkit-font-smoothing:antialiased;min-height:100vh;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}#app{justify-content:center;align-items:center;width:100%;height:100vh;display:flex}.mobile-container{background:var(--chat-bg);-webkit-backdrop-filter:blur(12px);width:100%;max-width:480px;height:100vh;box-shadow:var(--shadow-lg);flex-direction:column;display:flex;position:relative;overflow:hidden}@media 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