fix: PIX + idioma espanhol e SEO

Controllers/HomeController.cs

@@ -33,8 +33,12 @@ namespace QRRapidoApp.Controllers
             _markdownService = markdownService;
         }
 
-        // Default fallback route handled by Program.cs map
+        // Home page routes
+        // "/" → Portuguese (canonical)
+        // "/es-PY" → Spanish
         [HttpGet]
+        [Route("/")]
+        [Route("es-PY")]
         public async Task<IActionResult> Index(string? qrType = null)
         {
             var userId = User?.FindFirst(ClaimTypes.NameIdentifier)?.Value;
@@ -106,37 +110,42 @@ namespace QRRapidoApp.Controllers
             return View("Index");
         }
 
-        // Dedicated SEO Routes - These act as virtual pages
+        // Dedicated SEO Routes - Landing pages for each QR type
+        // Portuguese (default): /pix, /wifi, etc. (no culture prefix)
+        // Spanish: /es-PY/pix, /es-PY/wifi, etc.
+
         [Route("pix")]
-        [Route("{culture}/pix")]
+        [Route("es-PY/pix")]
         public async Task<IActionResult> Pix() => await Index("pix");
 
         [Route("wifi")]
-        [Route("{culture}/wifi")]
+        [Route("es-PY/wifi")]
         public async Task<IActionResult> Wifi() => await Index("wifi");
 
         [Route("vcard")]
-        [Route("{culture}/vcard")]
+        [Route("es-PY/vcard")]
         public async Task<IActionResult> VCard() => await Index("vcard");
 
         [Route("whatsapp")]
-        [Route("{culture}/whatsapp")]
+        [Route("es-PY/whatsapp")]
         public async Task<IActionResult> WhatsApp() => await Index("whatsapp");
 
         [Route("email")]
-        [Route("{culture}/email")]
+        [Route("es-PY/email")]
         public async Task<IActionResult> Email() => await Index("email");
 
         [Route("sms")]
-        [Route("{culture}/sms")]
+        [Route("es-PY/sms")]
         public async Task<IActionResult> Sms() => await Index("sms");
 
+        [Route("texto")]
         [Route("text")]
-        [Route("{culture}/text")]
+        [Route("es-PY/texto")]
+        [Route("es-PY/text")]
         public async Task<IActionResult> Text() => await Index("text");
 
         [Route("url")]
-        [Route("{culture}/url")]
+        [Route("es-PY/url")]
         public async Task<IActionResult> UrlType() => await Index("url");
 
         public IActionResult Privacy()
@@ -315,43 +324,46 @@ namespace QRRapidoApp.Controllers
             }
 
             // Core entry points
+            // "/" is canonical for Portuguese, "/es-PY" for Spanish
             AppendUrl("/", "daily", "1.0");
-            AppendUrl("/pt-BR", "daily", "0.9");
             AppendUrl("/es-PY", "daily", "0.9");
 
-            // Tools (Virtual Pages)
+            // Tools (Landing Pages) - Portuguese without prefix, Spanish with /es-PY
-            var tools = new[] { "pix", "wifi", "vcard", "whatsapp", "email", "sms", "text", "url" };
+            var tools = new[] { "pix", "wifi", "vcard", "whatsapp", "email", "sms", "texto", "url" };
-            var cultures = new[] { "pt-BR", "es-PY" };
 
-            foreach (var culture in cultures)
+            // Portuguese tools (canonical, no prefix)
+            foreach (var tool in tools)
             {
-                foreach (var tool in tools)
+                AppendUrl($"/{tool}", "weekly", "0.9");
-                {
-                    AppendUrl($"/{culture}/{tool}", "weekly", "0.9");
-                }
             }
 
+            // Spanish tools (with /es-PY prefix)
+            foreach (var tool in tools)
+            {
+                AppendUrl($"/es-PY/{tool}", "weekly", "0.8");
+            }
+
+            // Informational pages
             var informationalPages = new[]
             {
-                new { Path = "Home/About", ChangeFreq = "monthly", Priority = "0.8" },
+                new { Path = "Home/About", ChangeFreq = "monthly", Priority = "0.7" },
-                new { Path = "Home/Contact", ChangeFreq = "monthly", Priority = "0.8" },
+                new { Path = "Home/Contact", ChangeFreq = "monthly", Priority = "0.7" },
-                new { Path = "Home/FAQ", ChangeFreq = "weekly", Priority = "0.9" },
+                new { Path = "Home/FAQ", ChangeFreq = "weekly", Priority = "0.8" },
                 new { Path = "Home/HowToUse", ChangeFreq = "weekly", Priority = "0.8" },
-                new { Path = "Home/Privacy", ChangeFreq = "monthly", Priority = "0.5" },
+                new { Path = "Home/Privacy", ChangeFreq = "monthly", Priority = "0.4" },
-                new { Path = "Home/Terms", ChangeFreq = "monthly", Priority = "0.5" }
+                new { Path = "Home/Terms", ChangeFreq = "monthly", Priority = "0.4" }
             };
 
+            // Portuguese informational pages (no prefix)
             foreach (var page in informationalPages)
             {
                 AppendUrl($"/{page.Path}", page.ChangeFreq, page.Priority);
             }
 
-            foreach (var culture in cultures)
+            // Spanish informational pages
+            foreach (var page in informationalPages)
             {
-                foreach (var page in informationalPages)
+                AppendUrl($"/es-PY/{page.Path}", page.ChangeFreq, page.Priority);
-                {
-                    AppendUrl($"/{culture}/{page.Path}", page.ChangeFreq, page.Priority);
-                }
             }
 
             // Dynamic tutorial pages
@@ -368,7 +380,12 @@ namespace QRRapidoApp.Controllers
                     var encodedSlug = System.Uri.EscapeDataString(slug);
                     var lastMod = article.LastMod.ToString("yyyy-MM-dd");
 
-                    AppendUrl($"/{article.Culture}/tutoriais/{encodedSlug}", "weekly", "0.8", lastMod);
+                    // pt-BR tutorials go under /tutoriais/, es-PY under /es-PY/tutoriais/
+                    var tutorialPath = article.Culture == "pt-BR"
+                        ? $"/tutoriais/{encodedSlug}"
+                        : $"/{article.Culture}/tutoriais/{encodedSlug}";
+
+                    AppendUrl(tutorialPath, "weekly", "0.8", lastMod);
                 }
 
                 _logger.LogInformation("Generated sitemap with {Count} tutorial articles", allArticles.Count);

Controllers/TutoriaisController.cs

@@ -27,11 +27,19 @@ namespace QRRapidoApp.Controllers
             _config = config;
         }
 
-        [Route("{culture:regex(^(pt-BR|es-PY)$)}/tutoriais/{slug}")]
+        // Portuguese: /tutoriais/{slug} (canonical, no prefix)
-        public async Task<IActionResult> Article(string slug, string culture)
+        // Spanish: /es-PY/tutoriais/{slug}
+        [Route("tutoriais/{slug}")]
+        [Route("es-PY/tutoriais/{slug}")]
+        public async Task<IActionResult> Article(string slug, string? culture = null)
         {
             try
             {
+                // Determine culture from URL path if not provided
+                culture ??= Request.Path.Value?.StartsWith("/es-PY", StringComparison.OrdinalIgnoreCase) == true
+                    ? "es-PY"
+                    : "pt-BR";
+
                 var article = await _markdownService.GetArticleAsync(slug, culture);
 
                 if (article == null)
@@ -77,11 +85,19 @@ namespace QRRapidoApp.Controllers
             }
         }
 
-        [Route("{culture:regex(^(pt-BR|es-PY)$)}/tutoriais")]
+        // Portuguese: /tutoriais (canonical, no prefix)
-        public async Task<IActionResult> Index(string culture)
+        // Spanish: /es-PY/tutoriais
+        [Route("tutoriais")]
+        [Route("es-PY/tutoriais")]
+        public async Task<IActionResult> Index(string? culture = null)
         {
             try
             {
+                // Determine culture from URL path if not provided
+                culture ??= Request.Path.Value?.StartsWith("/es-PY", StringComparison.OrdinalIgnoreCase) == true
+                    ? "es-PY"
+                    : "pt-BR";
+
                 var articles = await _markdownService.GetAllArticlesAsync(culture);
 
                 // Set ViewBag

Middleware/LanguageRedirectionMiddleware.cs

@@ -3,19 +3,22 @@ using System.Linq;
 
 namespace QRRapidoApp.Middleware
 {
+    /// <summary>
+    /// Middleware de redirecionamento de idioma otimizado para SEO.
+    ///
+    /// Comportamento:
+    /// - "/" → Retorna 200 OK em Português (canonical)
+    /// - "/pt-BR" ou "/pt-BR/*" → Redireciona 301 para "/" ou "/*" (sem prefixo)
+    /// - "/es-PY" ou "/es-PY/*" → Retorna 200 OK em Espanhol (mantém URL)
+    /// - "/pix", "/wifi", etc. → Retorna 200 OK em Português (sem redirect)
+    /// </summary>
     public class LanguageRedirectionMiddleware
     {
         private readonly RequestDelegate _next;
         private readonly ILogger<LanguageRedirectionMiddleware> _logger;
         private readonly string[] _supportedCultures = { "pt-BR", "es-PY" };
-        private readonly Dictionary<string, string> _cultureAliases = new(StringComparer.OrdinalIgnoreCase)
-        {
-            { "pt", "pt-BR" },
-            { "pt-br", "pt-BR" },
-            { "es", "es-PY" },
-            { "es-py", "es-PY" }
-        };
         private const string DefaultCulture = "pt-BR";
+        private const string CookieName = ".AspNetCore.Culture";
 
         public LanguageRedirectionMiddleware(RequestDelegate next, ILogger<LanguageRedirectionMiddleware> logger)
         {
@@ -27,84 +30,109 @@ namespace QRRapidoApp.Middleware
         {
             var path = context.Request.Path.Value?.TrimStart('/') ?? "";
 
-            if (TryHandleCultureAlias(context, path))
+            // Skip special routes (static files, API, auth callbacks, etc.)
-            {
+            if (IsSpecialRoute(path))
-                return;
-            }
-
-            if (HasCultureInPath(path) || IsSpecialRoute(path))
             {
                 await _next(context);
                 return;
             }
 
-            var detectedCulture = DetectBrowserLanguage(context);
-
-            // ALWAYS Redirect to include culture in path for consistency and SEO
-            // This ensures /pix becomes /pt-BR/pix or /es-PY/pix
-            
-            var redirectUrl = $"/{detectedCulture}";
-            if (!string.IsNullOrEmpty(path))
-            {
-                redirectUrl += $"/{path}";
-            }
-
-            if (context.Request.QueryString.HasValue)
-            {
-                redirectUrl += context.Request.QueryString.Value;
-            }
-
-            _logger.LogInformation("Redirecting to localized URL: {RedirectUrl} (detected culture: {Culture})",
-                redirectUrl, detectedCulture);
-
-            context.Response.Redirect(redirectUrl, permanent: false);
-        }
-
-        private bool HasCultureInPath(string path)
-        {
-            if (string.IsNullOrEmpty(path))
-                return false;
-
             var segments = path.Split('/', StringSplitOptions.RemoveEmptyEntries);
-            if (segments.Length == 0)
+            var firstSegment = segments.Length > 0 ? segments[0] : "";
-                return false;
 
-            return _supportedCultures.Contains(segments[0]);
+            // Check if URL starts with a culture prefix
-        }
+            if (IsCultureSegment(firstSegment))
-
-        private bool TryHandleCultureAlias(HttpContext context, string path)
-        {
-            if (string.IsNullOrEmpty(path))
             {
-                return false;
+                // /pt-BR/* → Redirect 301 to /* (remove pt-BR prefix, it's the default)
-            }
+                if (string.Equals(firstSegment, "pt-BR", StringComparison.OrdinalIgnoreCase))
-
-            var segments = path.Split('/', StringSplitOptions.RemoveEmptyEntries);
-            if (segments.Length == 0)
-            {
-                return false;
-            }
-
-            var firstSegment = segments[0];
-            if (_cultureAliases.TryGetValue(firstSegment, out var mappedCulture))
-            {
-                // Don't redirect if already using the canonical culture (case-sensitive check)
-                if (firstSegment == mappedCulture)
                 {
-                    return false;
+                    var remainingPath = segments.Length > 1
+                        ? "/" + string.Join('/', segments.Skip(1))
+                        : "/";
+
+                    if (context.Request.QueryString.HasValue)
+                    {
+                        remainingPath += context.Request.QueryString.Value;
+                    }
+
+                    _logger.LogInformation("Redirecting /pt-BR{Path} to {RedirectUrl} (canonical)",
+                        remainingPath == "/" ? "" : remainingPath, remainingPath);
+
+                    context.Response.Redirect(remainingPath, permanent: true);
+                    return;
                 }
 
-                var remainingSegments = segments.Length > 1
+                // /es-PY/* → Continue normally (Spanish has its own URLs)
-                    ? "/" + string.Join('/', segments.Skip(1))
+                if (string.Equals(firstSegment, "es-PY", StringComparison.OrdinalIgnoreCase))
-                    : string.Empty;
+                {
+                    // Set culture for the request
+                    SetCulture(context, "es-PY");
+                    await _next(context);
+                    return;
+                }
+
+                // Handle lowercase aliases: /pt-br → /pt-BR, /es-py → /es-PY
+                if (TryHandleCultureAlias(context, firstSegment, segments))
+                {
+                    return;
+                }
+            }
+
+            // No culture prefix → Serve in Portuguese (default)
+            // URLs like /, /pix, /wifi, /vcard etc.
+            SetCulture(context, DefaultCulture);
+            await _next(context);
+        }
+
+        private bool IsCultureSegment(string segment)
+        {
+            if (string.IsNullOrEmpty(segment)) return false;
+
+            // Check exact matches and aliases
+            return string.Equals(segment, "pt-BR", StringComparison.OrdinalIgnoreCase) ||
+                   string.Equals(segment, "es-PY", StringComparison.OrdinalIgnoreCase) ||
+                   string.Equals(segment, "pt", StringComparison.OrdinalIgnoreCase) ||
+                   string.Equals(segment, "es", StringComparison.OrdinalIgnoreCase);
+        }
+
+        private bool TryHandleCultureAlias(HttpContext context, string firstSegment, string[] segments)
+        {
+            string? targetCulture = null;
+            string? targetPrefix = null;
+
+            // Map aliases to canonical forms
+            if (string.Equals(firstSegment, "pt", StringComparison.OrdinalIgnoreCase) ||
+                (string.Equals(firstSegment, "pt-br", StringComparison.Ordinal) && firstSegment != "pt-BR"))
+            {
+                // /pt/* or /pt-br/* → Redirect to /* (Portuguese is canonical without prefix)
+                targetCulture = "pt-BR";
+                targetPrefix = ""; // No prefix for Portuguese
+            }
+            else if (string.Equals(firstSegment, "es", StringComparison.OrdinalIgnoreCase) ||
+                     (string.Equals(firstSegment, "es-py", StringComparison.OrdinalIgnoreCase) && firstSegment != "es-PY"))
+            {
+                // /es/* or /es-py/* → Redirect to /es-PY/*
+                targetCulture = "es-PY";
+                targetPrefix = "/es-PY";
+            }
+
+            if (targetCulture != null)
+            {
+                var remainingPath = segments.Length > 1
+                    ? "/" + string.Join('/', segments.Skip(1))
+                    : "";
+
+                var redirectUrl = targetPrefix + remainingPath;
+                if (string.IsNullOrEmpty(redirectUrl)) redirectUrl = "/";
 
-                var redirectUrl = $"/{mappedCulture}{remainingSegments}";
                 if (context.Request.QueryString.HasValue)
                 {
                     redirectUrl += context.Request.QueryString.Value;
                 }
 
-                _logger.LogInformation("Redirecting alias '{Alias}' to canonical culture URL: {RedirectUrl}", firstSegment, redirectUrl);
+                _logger.LogInformation("Redirecting alias '{Alias}' to canonical URL: {RedirectUrl}",
+                    firstSegment, redirectUrl);
+
                 context.Response.Redirect(redirectUrl, permanent: true);
                 return true;
             }
@@ -112,6 +140,16 @@ namespace QRRapidoApp.Middleware
             return false;
         }
 
+        private void SetCulture(HttpContext context, string culture)
+        {
+            var cultureInfo = new CultureInfo(culture);
+            CultureInfo.CurrentCulture = cultureInfo;
+            CultureInfo.CurrentUICulture = cultureInfo;
+
+            // Store in HttpContext for downstream use
+            context.Items["Culture"] = culture;
+        }
+
         private bool IsSpecialRoute(string path)
         {
             var specialRoutes = new[]
@@ -125,38 +163,5 @@ namespace QRRapidoApp.Middleware
 
             return specialRoutes.Any(route => path.StartsWith(route, StringComparison.OrdinalIgnoreCase));
         }
-
-        private string DetectBrowserLanguage(HttpContext context)
-        {
-            var acceptLanguage = context.Request.GetTypedHeaders().AcceptLanguage;
-
-            if (acceptLanguage != null && acceptLanguage.Any())
-            {
-                foreach (var lang in acceptLanguage.OrderByDescending(x => x.Quality ?? 1.0))
-                {
-                    var langCode = lang.Value.Value;
-
-                    // Exact match for es-PY
-                    if (string.Equals(langCode, "es-PY", StringComparison.OrdinalIgnoreCase))
-                    {
-                        return "es-PY";
-                    }
-
-                    // Generic 'es' maps to 'es-PY'
-                    if (langCode.StartsWith("es-", StringComparison.OrdinalIgnoreCase) || string.Equals(langCode, "es", StringComparison.OrdinalIgnoreCase))
-                    {
-                        return "es-PY";
-                    }
-                    
-                    // Check for pt-BR
-                    if (langCode.StartsWith("pt-", StringComparison.OrdinalIgnoreCase) || string.Equals(langCode, "pt", StringComparison.OrdinalIgnoreCase))
-                    {
-                        return "pt-BR";
-                    }
-                }
-            }
-
-            return DefaultCulture;
-        }
     }
 }

Providers/CustomRouteDataRequestCultureProvider.cs

@@ -6,6 +6,17 @@ namespace QRRapidoApp.Providers
     {
         public Task<ProviderCultureResult?> DetermineProviderCultureResult(HttpContext httpContext)
         {
+            // First check if the middleware has already determined the culture (e.g. for static routes like /es-PY/pix)
+            if (httpContext.Items.TryGetValue("Culture", out var cultureItem) && cultureItem is string cultureFromMiddleware)
+            {
+                var supportedCultures = new[] { "pt-BR", "es-PY" };
+                if (supportedCultures.Contains(cultureFromMiddleware))
+                {
+                    return Task.FromResult<ProviderCultureResult?>(new ProviderCultureResult(cultureFromMiddleware, cultureFromMiddleware));
+                }
+            }
+
+            // Fallback to route data (standard routing)
             var routeValues = httpContext.GetRouteData()?.Values;
             if (routeValues != null && routeValues.TryGetValue("culture", out var cultureValue))
             {

Resources/SharedResource.es-PY.resx

@@ -2150,4 +2150,16 @@
   <data name="FAQ_StaticQRNote" xml:space="preserve">
     <value>Los códigos QR estáticos son ideales para información permanente como WiFi, tarjetas de visita, URLs de sitios web y contactos.</value>
   </data>
+  <data name="PixGeneratorTitle" xml:space="preserve">
+    <value>Generador de PIX</value>
+  </data>
+  <data name="PixGeneratorDesc" xml:space="preserve">
+    <value>Cree códigos QR para recibir pagos instantáneos. Compatible con todos los bancos brasileños.</value>
+  </data>
+  <data name="SellManyProductsTitle" xml:space="preserve">
+    <value>¿Vende muchos productos?</value>
+  </data>
+  <data name="SellManyProductsDesc" xml:space="preserve">
+    <value>Suscríbase a nuestro plan mensual y gestione códigos QR exclusivos para cada producto de su catálogo.</value>
+  </data>
 </root>

Resources/SharedResource.pt-BR.resx

@@ -2303,4 +2303,16 @@
   <data name="FAQ_StaticQRNote" xml:space="preserve">
     <value>QR codes estáticos são ideais para informações permanentes como WiFi, cartões de visita, URLs de sites, e contatos.</value>
   </data>
+  <data name="PixGeneratorTitle" xml:space="preserve">
+    <value>Gerador de PIX</value>
+  </data>
+  <data name="PixGeneratorDesc" xml:space="preserve">
+    <value>Crie QR Codes para receber pagamentos instantâneos. Compatível com todos os bancos brasileiros.</value>
+  </data>
+  <data name="SellManyProductsTitle" xml:space="preserve">
+    <value>Vende muitos produtos?</value>
+  </data>
+  <data name="SellManyProductsDesc" xml:space="preserve">
+    <value>Assine nosso plano mensal e gerencie QR Codes exclusivos para cada produto do seu catálogo.</value>
+  </data>
 </root>

Views/Home/Index.cshtml

@@ -7,6 +7,34 @@
     ViewData["Title"] = "Home";
     var userId = User?.FindFirst(System.Security.Claims.ClaimTypes.NameIdentifier)?.Value;
     Layout = "~/Views/Shared/_Layout.cshtml";
+
+    // Server-Side Rendering: Determine which accordion to open based on qrType
+    var selectedQRType = (ViewBag.SelectedQRType as string)?.ToLowerInvariant() ?? "";
+
+    // Map qrType to accordion ID suffix (e.g., "pix" -> "pixQR")
+    var accordionIdMap = new Dictionary<string, string>
+    {
+        { "url", "url" },
+        { "text", "text" },
+        { "texto", "text" },
+        { "whatsapp", "whatsapp" },
+        { "email", "email" },
+        { "pix", "pix" },
+        { "sms", "sms" },
+        { "wifi", "wifi" },
+        { "vcard", "vcard" }
+    };
+
+    // Helper function to determine if this accordion should be open
+    string GetAccordionClass(string accordionType) =>
+        accordionIdMap.TryGetValue(selectedQRType, out var mapped) && mapped == accordionType
+            ? "accordion-collapse collapse show"
+            : "accordion-collapse collapse";
+
+    string GetButtonClass(string accordionType) =>
+        accordionIdMap.TryGetValue(selectedQRType, out var mapped) && mapped == accordionType
+            ? "accordion-button"
+            : "accordion-button collapsed";
 }
 
 
@@ -512,8 +540,8 @@
                                 <div class="d-flex">
                                     <div class="me-3 display-4"><i class="fas fa-qrcode"></i></div>
                                     <div>
-                                        <h5 class="alert-heading fw-bold">Gerador de PIX</h5>
+                                        <h5 class="alert-heading fw-bold">@Localizer["PixGeneratorTitle"]</h5>
-                                        <p class="mb-0">Crie QR Codes para receber pagamentos instantâneos. Compatível com todos os bancos brasileiros.</p>
+                                        <p class="mb-0">@Localizer["PixGeneratorDesc"]</p>
                                     </div>
                                 </div>
                             </div>
@@ -521,8 +549,8 @@
                             <div class="alert alert-warning border-warning d-flex align-items-center mb-3">
                                 <i class="fas fa-store fa-2x me-3 text-warning"></i>
                                 <div>
-                                    <strong>Vende muitos produtos?</strong>
+                                    <strong>@Localizer["SellManyProductsTitle"]</strong>
-                                    <p class="mb-0 small">Assine nosso <a href="/Pagamento/SelecaoPlano" class="alert-link">plano mensal</a> e gerencie QR Codes exclusivos para cada produto do seu catálogo.</p>
+                                    <p class="mb-0 small">Assine nosso plano mensal e gerencie QR Codes exclusivos para cada produto do seu catálogo.</p>
                                 </div>
                             </div>
 
@@ -867,12 +895,12 @@
                         <!-- URL/Link QR Code -->
                         <div class="accordion-item">
                             <h2 class="accordion-header">
-                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#urlQR">
+                                <button class="@GetButtonClass("url")" type="button" data-bs-toggle="collapse" data-bs-target="#urlQR">
                                     <i class="fas fa-link text-primary me-2"></i>
                                     <strong>@Localizer["URLLink"]</strong>
                                 </button>
                             </h2>
-                            <div id="urlQR" class="accordion-collapse collapse" data-bs-parent="#qrTypesAccordion">
+                            <div id="urlQR" class="@GetAccordionClass("url")" data-bs-parent="#qrTypesAccordion">
                                 <div class="accordion-body">
                                     <div class="row">
                                         <div class="col-md-6">
@@ -910,12 +938,12 @@
                         <!-- Text QR Code -->
                         <div class="accordion-item">
                             <h2 class="accordion-header">
-                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#textQR">
+                                <button class="@GetButtonClass("text")" type="button" data-bs-toggle="collapse" data-bs-target="#textQR">
                                     <i class="fas fa-align-left text-primary me-2"></i>
                                     <strong>@Localizer["SimpleText"]</strong>
                                 </button>
                             </h2>
-                            <div id="textQR" class="accordion-collapse collapse" data-bs-parent="#qrTypesAccordion">
+                            <div id="textQR" class="@GetAccordionClass("text")" data-bs-parent="#qrTypesAccordion">
                                 <div class="accordion-body">
                                     <div class="row">
                                         <div class="col-md-6">
@@ -951,12 +979,12 @@
                         <!-- WhatsApp QR Code -->
                         <div class="accordion-item">
                             <h2 class="accordion-header">
-                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#whatsappQR">
+                                <button class="@GetButtonClass("whatsapp")" type="button" data-bs-toggle="collapse" data-bs-target="#whatsappQR">
                                     <i class="fab fa-whatsapp text-success me-2"></i>
                                     <strong>WhatsApp</strong>
                                 </button>
                             </h2>
-                            <div id="whatsappQR" class="accordion-collapse collapse" data-bs-parent="#qrTypesAccordion">
+                            <div id="whatsappQR" class="@GetAccordionClass("whatsapp")" data-bs-parent="#qrTypesAccordion">
                                 <div class="accordion-body">
                                     <div class="row">
                                         <div class="col-md-6">
@@ -991,12 +1019,12 @@
                         <!-- Email QR Code -->
                         <div class="accordion-item">
                             <h2 class="accordion-header">
-                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#emailQR">
+                                <button class="@GetButtonClass("email")" type="button" data-bs-toggle="collapse" data-bs-target="#emailQR">
                                     <i class="fas fa-envelope text-primary me-2"></i>
                                     <strong>@Localizer["Email"]</strong>
                                 </button>
                             </h2>
-                            <div id="emailQR" class="accordion-collapse collapse" data-bs-parent="#qrTypesAccordion">
+                            <div id="emailQR" class="@GetAccordionClass("email")" data-bs-parent="#qrTypesAccordion">
                                 <div class="accordion-body">
                                     <div class="row">
                                         <div class="col-md-6">
@@ -1031,12 +1059,12 @@
                         <!-- PIX QR Code -->
                         <div class="accordion-item">
                             <h2 class="accordion-header">
-                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#pixQR">
+                                <button class="@GetButtonClass("pix")" type="button" data-bs-toggle="collapse" data-bs-target="#pixQR">
                                     <i class="fas fa-qrcode text-success me-2"></i>
                                     <strong>@Localizer["PIX"]</strong>
                                 </button>
                             </h2>
-                            <div id="pixQR" class="accordion-collapse collapse" data-bs-parent="#qrTypesAccordion">
+                            <div id="pixQR" class="@GetAccordionClass("pix")" data-bs-parent="#qrTypesAccordion">
                                 <div class="accordion-body">
                                     <div class="row">
                                         <div class="col-md-6">
@@ -1070,12 +1098,12 @@
                         <!-- SMS QR Code -->
                         <div class="accordion-item">
                             <h2 class="accordion-header">
-                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#smsQR">
+                                <button class="@GetButtonClass("sms")" type="button" data-bs-toggle="collapse" data-bs-target="#smsQR">
                                     <i class="fas fa-sms text-primary me-2"></i>
                                     <strong>@Localizer["SMS"]</strong>
                                 </button>
                             </h2>
-                            <div id="smsQR" class="accordion-collapse collapse" data-bs-parent="#qrTypesAccordion">
+                            <div id="smsQR" class="@GetAccordionClass("sms")" data-bs-parent="#qrTypesAccordion">
                                 <div class="accordion-body">
                                     <div class="row">
                                         <div class="col-md-6">
@@ -1110,12 +1138,12 @@
                         <!-- WiFi QR Code -->
                         <div class="accordion-item">
                             <h2 class="accordion-header">
-                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#wifiQR">
+                                <button class="@GetButtonClass("wifi")" type="button" data-bs-toggle="collapse" data-bs-target="#wifiQR">
                                     <i class="fas fa-wifi text-primary me-2"></i>
                                     <strong>@Localizer["WiFi"]</strong>
                                 </button>
                             </h2>
-                            <div id="wifiQR" class="accordion-collapse collapse" data-bs-parent="#qrTypesAccordion">
+                            <div id="wifiQR" class="@GetAccordionClass("wifi")" data-bs-parent="#qrTypesAccordion">
                                 <div class="accordion-body">
                                     <div class="row">
                                         <div class="col-md-6">
@@ -1151,12 +1179,12 @@
                         <!-- vCard QR Code -->
                         <div class="accordion-item">
                             <h2 class="accordion-header">
-                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#vcardQR">
+                                <button class="@GetButtonClass("vcard")" type="button" data-bs-toggle="collapse" data-bs-target="#vcardQR">
                                     <i class="fas fa-address-card text-primary me-2"></i>
                                     <strong>@Localizer["VCard"]</strong>
                                 </button>
                             </h2>
-                            <div id="vcardQR" class="accordion-collapse collapse" data-bs-parent="#qrTypesAccordion">
+                            <div id="vcardQR" class="@GetAccordionClass("vcard")" data-bs-parent="#qrTypesAccordion">
                                 <div class="accordion-body">
                                     <div class="row">
                                         <div class="col-md-6">

Views/Shared/_Layout.cshtml

@@ -18,6 +18,34 @@
     var appEnvironment = Configuration["App:Environment"] ?? HostEnvironment?.EnvironmentName ?? "Unknown";
     var secretsLoaded = Configuration.GetValue<bool>("App:SecretsLoaded");
 
+    // SEO: Determine if current page is Spanish (for URL building)
+    var requestPath = Context.Request.Path.Value ?? "/";
+    var isSpanish = requestPath.StartsWith("/es-PY", StringComparison.OrdinalIgnoreCase);
+
+    // Get path without culture prefix for building alternate URLs
+    var pathWithoutCulture = requestPath;
+    if (isSpanish && requestPath.Length > 6)
+    {
+        pathWithoutCulture = requestPath.Substring(6); // Remove "/es-PY"
+    }
+    else if (isSpanish)
+    {
+        pathWithoutCulture = "/";
+    }
+    if (string.IsNullOrEmpty(pathWithoutCulture)) pathWithoutCulture = "/";
+
+    // Canonical URL - for Portuguese it's without prefix, for Spanish it's with /es-PY
+    var canonicalUrl = isSpanish
+        ? $"https://qrrapido.site/es-PY{(pathWithoutCulture == "/" ? "" : pathWithoutCulture)}"
+        : $"https://qrrapido.site{pathWithoutCulture}";
+
+    // Alternate URLs for hreflang
+    var ptUrl = $"https://qrrapido.site{pathWithoutCulture}";
+    var esUrl = $"https://qrrapido.site/es-PY{(pathWithoutCulture == "/" ? "" : pathWithoutCulture)}";
+
+    // Culture prefix for internal links
+    var culturePrefix = isSpanish ? "/es-PY" : "";
+
     if (User?.Identity?.IsAuthenticated == true)
     {
         var userId = User.FindFirst(System.Security.Claims.ClaimTypes.NameIdentifier)?.Value;
@@ -47,27 +75,27 @@
     <meta http-equiv="Expires" content="0">
 
     <!-- SEO Meta Tags -->
-    <meta name="description" content="@Localizer["QRGenerateDescription"]">
+    <meta name="description" content="@(ViewBag.Description ?? Localizer["QRGenerateDescription"])">
-    <meta name="keywords" content="qr rapido, gerador qr rapido, qr code rapido, codigo qr rapido, qr gratis rapido, generador qr rapido, qr ultrarapido">
+    <meta name="keywords" content="@(ViewBag.Keywords ?? "qr rapido, gerador qr rapido, qr code rapido, codigo qr rapido, qr gratis rapido, generador qr rapido, qr ultrarapido")">
     <meta name="author" content="QR Rapido">
     <meta name="robots" content="index, follow">
 
     <!-- Canonical URL -->
-    <link rel="canonical" href="@Context.Request.GetDisplayUrl()">
+    <link rel="canonical" href="@canonicalUrl">
 
-    <!-- Hreflang for multilingual -->
+    <!-- Hreflang for multilingual SEO -->
-    <link rel="alternate" hreflang="pt-BR" href="https://qrrapido.site/pt-BR/">
+    <link rel="alternate" hreflang="pt-BR" href="@ptUrl">
-    <link rel="alternate" hreflang="es-PY" href="https://qrrapido.site/es-PY/">
+    <link rel="alternate" hreflang="es-PY" href="@esUrl">
-    <link rel="alternate" hreflang="x-default" href="https://qrrapido.site/">
+    <link rel="alternate" hreflang="x-default" href="@ptUrl">
 
     <!-- Open Graph -->
-    <meta property="og:title" content="QR Rapido - @Localizer["FastestQRGeneratorWeb"]">
+    <meta property="og:title" content="@(ViewBag.Title ?? "QR Rapido") - @Localizer["FastestQRGeneratorWeb"]">
-    <meta property="og:description" content="@Localizer["QRGenerateDescription"]">
+    <meta property="og:description" content="@(ViewBag.Description ?? Localizer["QRGenerateDescription"])">
     <meta property="og:image" content="https://qrrapido.site/images/qrrapido-og-image.png">
-    <meta property="og:url" content="@Context.Request.GetDisplayUrl()">
+    <meta property="og:url" content="@canonicalUrl">
     <meta property="og:type" content="website">
     <meta property="og:site_name" content="QR Rapido">
-    <meta property="og:locale" content="pt_BR">
+    <meta property="og:locale" content="@(isSpanish ? "es_PY" : "pt_BR")">
 
     <!-- Twitter Cards -->
     <meta name="twitter:card" content="summary_large_image">
@@ -378,11 +406,8 @@
             <p class="mb-0 opacity-75">
                 @Localizer["AverageTimePrefix"] <strong>@Localizer["AverageTimeValue"]</strong> @Localizer["AverageTimeSuffix"]
             </p>
-            @{
-                var currentCulture = System.Globalization.CultureInfo.CurrentUICulture.Name;
-            }
             <div class="mt-3">
-                <a href="/@currentCulture/tutoriais" class="btn btn-sm btn-light">
+                <a href="@(culturePrefix)/tutoriais" class="btn btn-sm btn-light">
                     <i class="fas fa-graduation-cap"></i> @Localizer["ViewTutorials"]
                 </a>
             </div>
@@ -400,18 +425,30 @@
     <footer class="bg-dark text-light py-4 mt-5">
         <div class="container">
             <div class="row">
-                <div class="col-md-6">
+                <div class="col-md-5">
                     <h5>QR Rapido</h5>
                     <p class="small">@Localizer["FastestQRGeneratorDescription"]</p>
                 </div>
-                <div class="col-md-2">
+                <div class="col-md-3">
                     <h6>@Localizer["Tools"]</h6>
-                    <ul class="list-unstyled small">
+                    <div class="row">
-                        <li><a href="/pix" class="text-light text-decoration-none">Gerador de PIX</a></li>
+                        <div class="col-6">
-                        <li><a href="/wifi" class="text-light text-decoration-none">QR Code WiFi</a></li>
+                            <ul class="list-unstyled small">
-                        <li><a href="/whatsapp" class="text-light text-decoration-none">Link WhatsApp</a></li>
+                                <li><a href="@(culturePrefix)/pix" class="text-light text-decoration-none">@Localizer["PixGenerator"]</a></li>
-                        <li><a href="/vcard" class="text-light text-decoration-none">Cartão Digital</a></li>
+                                <li><a href="@(culturePrefix)/wifi" class="text-light text-decoration-none">QR Code WiFi</a></li>
-                    </ul>
+                                <li><a href="@(culturePrefix)/whatsapp" class="text-light text-decoration-none">Link WhatsApp</a></li>
+                                <li><a href="@(culturePrefix)/vcard" class="text-light text-decoration-none">@Localizer["DigitalCard"]</a></li>
+                            </ul>
+                        </div>
+                        <div class="col-6">
+                            <ul class="list-unstyled small">
+                                <li><a href="@(culturePrefix)/email" class="text-light text-decoration-none">QR Code Email</a></li>
+                                <li><a href="@(culturePrefix)/sms" class="text-light text-decoration-none">QR Code SMS</a></li>
+                                <li><a href="@(culturePrefix)/texto" class="text-light text-decoration-none">@Localizer["TextQR"]</a></li>
+                                <li><a href="@(culturePrefix)/url" class="text-light text-decoration-none">QR Code URL</a></li>
+                            </ul>
+                        </div>
+                    </div>
                 </div>
                 <div class="col-md-2">
                     <h6>@Localizer["UsefulLinks"]</h6>

wwwroot/js/language-switcher.js

@@ -1,33 +1,30 @@
 // Language switching functionality for QR Rapido
+// SEO Strategy:
+// - Portuguese (pt-BR): URLs without prefix (/, /pix, /wifi, etc.) - canonical
+// - Spanish (es-PY): URLs with /es-PY prefix (/es-PY, /es-PY/pix, etc.)
+
 document.addEventListener('DOMContentLoaded', function () {
-    // FORCE: Respect the URL culture above all else
-    let currentCulture = getCurrentCulture();
-
-    console.log('Current culture:', currentCulture);
-
-    localStorage.setItem('preferredLanguage', currentCulture);
-
     const languageDropdownItems = document.querySelectorAll('.dropdown-item[data-lang]');
     const currentLangSpan = document.getElementById('current-lang');
 
-    // Get current culture from URL or default to pt-BR
+    // Get current culture from URL
     function getCurrentCulture() {
         const pathSegments = window.location.pathname.split('/').filter(segment => segment);
-        const supportedCultures = ['pt-BR', 'es-PY', 'es'];
 
-        if (pathSegments.length > 0 && supportedCultures.includes(pathSegments[0])) {
+        // Check if first segment is es-PY (Spanish)
-            return pathSegments[0];
+        if (pathSegments.length > 0 && pathSegments[0].toLowerCase() === 'es-py') {
+            return 'es-PY';
         }
 
+        // Default is Portuguese (no prefix in URL)
         return 'pt-BR';
     }
 
-    // Update current language display
+    // Update current language display in header
     function updateCurrentLanguageDisplay(culture) {
         const langMap = {
             'pt-BR': 'PT',
-            'es-PY': 'ES',
+            'es-PY': 'ES'
-            'es': 'ES'
         };
 
         if (currentLangSpan) {
@@ -41,40 +38,60 @@ document.addEventListener('DOMContentLoaded', function () {
         const queryString = window.location.search;
         const hash = window.location.hash;
 
-        // Remove existing culture from path if present
+        // Get path segments, removing any culture prefix
-        const pathSegments = currentPath.split('/').filter(segment => segment);
+        let pathSegments = currentPath.split('/').filter(segment => segment);
-        const supportedCultures = ['pt-BR', 'es-PY', 'es'];
 
-        // Remove current culture if it's the first segment
+        // Remove existing culture prefix if present (es-PY or pt-BR)
-        if (pathSegments.length > 0 && supportedCultures.includes(pathSegments[0])) {
+        if (pathSegments.length > 0) {
-            pathSegments.shift();
+            const firstSegment = pathSegments[0].toLowerCase();
+            if (firstSegment === 'es-py' || firstSegment === 'pt-br') {
+                pathSegments.shift();
+            }
         }
 
-        // Build new path with selected culture
+        // Build new path based on selected culture
-        const newPath = '/' + newCulture + (pathSegments.length > 0 ? '/' + pathSegments.join('/') : '');
+        let newPath;
+        if (newCulture === 'pt-BR') {
+            // Portuguese: no prefix (canonical URLs)
+            newPath = pathSegments.length > 0 ? '/' + pathSegments.join('/') : '/';
+        } else {
+            // Spanish: add /es-PY prefix
+            newPath = '/es-PY' + (pathSegments.length > 0 ? '/' + pathSegments.join('/') : '');
+        }
 
         return newPath + queryString + hash;
     }
 
-    // Handle language selection
+    // Set culture cookie
+    function setCultureCookie(culture) {
+        // ASP.NET Core culture cookie format
+        const cookieValue = `c=${culture}|uic=${culture}`;
+        document.cookie = `.AspNetCore.Culture=${encodeURIComponent(cookieValue)}; path=/; max-age=31536000; SameSite=Lax`;
+
+        // Also store in localStorage for quick access
+        localStorage.setItem('preferredLanguage', culture);
+    }
+
     // Handle language selection
     languageDropdownItems.forEach(item => {
         item.addEventListener('click', function (e) {
             e.preventDefault();
 
             const selectedLang = this.getAttribute('data-lang');
-            currentCulture = getCurrentCulture();
+            const currentCulture = getCurrentCulture();
+
+            // Don't do anything if same language selected
+            if (selectedLang === currentCulture) {
+                return;
+            }
 
             // Track language change for analytics
             if (typeof window.trackLanguageChange === 'function') {
                 window.trackLanguageChange(currentCulture, selectedLang);
             }
 
-            // Store language preference in localStorage
+            // Save preference
-            localStorage.setItem('preferredLanguage', selectedLang);
+            setCultureCookie(selectedLang);
-
-            // Set culture cookie for server-side processing
-            document.cookie = `culture=${selectedLang}; path=/; max-age=31536000; SameSite=Lax`;
 
             // Navigate to new URL with selected language
             const newUrl = buildLocalizedUrl(selectedLang);
@@ -82,46 +99,19 @@ document.addEventListener('DOMContentLoaded', function () {
         });
     });
 
-    // Initialize current language display
+    // Initialize
-    currentCulture = getCurrentCulture();
+    const currentCulture = getCurrentCulture();
     updateCurrentLanguageDisplay(currentCulture);
 
-    // Store current culture in localStorage if not already set
+    // Ensure cookie matches URL culture
-    if (!localStorage.getItem('preferredLanguage')) {
+    setCultureCookie(currentCulture);
-        localStorage.setItem('preferredLanguage', currentCulture);
-    }
 });
 
-// Utility function to get user's preferred language
+// Utility function to get user's preferred language (for external use)
 function getUserPreferredLanguage() {
-    // Check localStorage first
     const storedLang = localStorage.getItem('preferredLanguage');
     if (storedLang) {
         return storedLang;
     }
-    
+    return 'pt-BR'; // Default
-    // Check browser language
-    const browserLang = navigator.language || navigator.userLanguage;
-    
-    // Map browser languages to supported cultures
-    const langMap = {
-        'pt': 'pt-BR',
-        'pt-BR': 'pt-BR',
-        'es': 'es-PY',
-        'es-PY': 'es-PY'
-    };
-    
-    // Check exact match first
-    if (langMap[browserLang]) {
-        return langMap[browserLang];
-    }
-    
-    // Check language part only (e.g., 'es' from 'es-AR')
-    const langPart = browserLang.split('-')[0];
-    if (langMap[langPart]) {
-        return langMap[langPart];
-    }
-
 }
-
-