feat: add explicit sidebar placement control and responsive design (1024-1280px)

- Add sidebar field to SkillCategory model for explicit left/right control
- Update splitSkills to respect sidebar field instead of automatic splitting
- Add responsive CSS for 1024-1280px: collapse labels, icons-only buttons, EN/ES language selector
- Remove language switcher animations
- Ensure desktop view (>1280px) always shows full sidebar content
- Move Databases and Infrastructure to right sidebar
- Reduce font sizes in responsive range
- Update project logos (Lidering, Jorpack, Delivery Bikes)

data/cv-en.json

@@ -350,6 +350,7 @@
       {
         "category": "Go Ecosystem",
         "proficiency": 5,
+        "sidebar": "left",
         "items": [
           "Hono - High-Performance Web Framework",
           "Gin - Web Framework",
@@ -363,6 +364,7 @@
       {
         "category": "JavaScript Ecosystem",
         "proficiency": 5,
+        "sidebar": "left",
         "items": [
           "Node.js & Express",
           "React & React Ecosystem",
@@ -375,6 +377,7 @@
       {
         "category": "Frontend Technologies",
         "proficiency": 5,
+        "sidebar": "left",
         "items": [
           "HTMX - Hypermedia-Driven Applications",
           "HTML5 & Semantic Web",
@@ -386,20 +389,10 @@
           "Template Engines (Handlebars, Panini, Mustache)"
         ]
       },
-      {
-        "category": "Legacy Enterprise Technologies",
-        "proficiency": 3,
-        "items": [
-          "Java & J2EE",
-          "Spring Framework, Struts, Hibernate",
-          "PHP & WordPress",
-          "Yii Framework, Zend Framework",
-          "Enterprise Application Servers (Tomcat, JBoss, WebLogic)"
-        ]
-      },
       {
         "category": "Backend Technologies",
         "proficiency": 5,
+        "sidebar": "left",
         "items": [
           "Go - Current Primary Stack",
           "Hono Framework - High-Performance Web Server",
@@ -409,9 +402,22 @@
           "Database Design & Optimization"
         ]
       },
+      {
+        "category": "Legacy Enterprise Technologies",
+        "proficiency": 3,
+        "sidebar": "left",
+        "items": [
+          "Java & J2EE",
+          "Spring Framework, Struts, Hibernate",
+          "PHP & WordPress",
+          "Yii Framework, Zend Framework",
+          "Enterprise Application Servers (Tomcat, JBoss, WebLogic)"
+        ]
+      },
       {
         "category": "Databases",
         "proficiency": 4,
+        "sidebar": "right",
         "items": [
           "PostgreSQL",
           "MySQL",
@@ -425,6 +431,7 @@
       {
         "category": "Infrastructure & Servers",
         "proficiency": 5,
+        "sidebar": "right",
         "items": [
           "Linux Server Administration",
           "VPS Deployment & Configuration",
@@ -436,6 +443,7 @@
       {
         "category": "DevOps & CI/CD",
         "proficiency": 5,
+        "sidebar": "right",
         "items": [
           "CI/CD Pipeline Design & Implementation",
           "Custom Deployment Solutions",
@@ -447,6 +455,7 @@
       {
         "category": "Team Management",
         "proficiency": 4,
+        "sidebar": "right",
         "items": [
           "Preparation and projects startup",
           "Fluid communication with clients",
@@ -458,6 +467,7 @@
       {
         "category": "Design Tools",
         "proficiency": 3,
+        "sidebar": "right",
         "items": [
           "Corel Draw",
           "Adobe PhotoShop",
@@ -793,9 +803,9 @@
       "technologies": ["JavaScript", "React", "Node.js", "PHP", "WordPress", "Web Development"],
       "shortDescription": "Collection of client projects and websites where I contributed to development, implementation, and technical solutions across various industries.",
       "responsibilities": [
-        "<img src='/static/images/projects/twentic.png' alt='Lidering'><div><strong><a href='https://lidering.com' target='_blank' rel='noopener noreferrer'>Lidering</a></strong> (via Twentic): Real estate and property management platform development</div>",
+        "<img src='/static/images/projects/lidering.png' alt='Lidering'><div><strong><a href='https://lidering.com' target='_blank' rel='noopener noreferrer'>Lidering</a></strong> (via Twentic): Real estate and property management platform development</div>",
-        "<img src='/static/images/projects/twentic.png' alt='Jorpack'><div><strong><a href='https://jorpack.com' target='_blank' rel='noopener noreferrer'>Jorpack</a></strong> (via Twentic): Industrial packaging solutions and corporate website</div>",
+        "<img src='/static/images/projects/jorpack.png' alt='Jorpack'><div><strong><a href='https://jorpack.com' target='_blank' rel='noopener noreferrer'>Jorpack</a></strong> (via Twentic): Industrial packaging solutions and corporate website</div>",
-        "<iconify-icon icon='mdi:bike' width='60' height='60' class='default-company-icon'></iconify-icon><div><strong><a href='https://deliverybikesbcn.com/' target='_blank' rel='noopener noreferrer'>Delivery Bikes BCN</a></strong>: Bicycle delivery service platform for Barcelona</div>",
+        "<img src='/static/images/projects/deliverybikes.png' alt='Delivery Bikes BCN'><div><strong><a href='https://deliverybikesbcn.com/' target='_blank' rel='noopener noreferrer'>Delivery Bikes BCN</a></strong>: Bicycle delivery service platform for Barcelona</div>",
         "<iconify-icon icon='mdi:security' width='60' height='60' class='default-company-icon'></iconify-icon><div><strong><a href='https://mobbeel.com' target='_blank' rel='noopener noreferrer'>Mobbeel</a></strong>: Biometric authentication and identity verification solutions website</div>"
       ]
     }

data/cv-es.json

@@ -350,6 +350,7 @@
       {
         "category": "Ecosistema Go",
         "proficiency": 5,
+        "sidebar": "left",
         "items": [
           "Hono - Framework Web de Alto Rendimiento",
           "Gin - Framework Web",
@@ -363,6 +364,7 @@
       {
         "category": "Ecosistema JavaScript",
         "proficiency": 5,
+        "sidebar": "left",
         "items": [
           "Node.js y Express",
           "React y Ecosistema React",
@@ -375,6 +377,7 @@
       {
         "category": "Tecnologías Frontend",
         "proficiency": 5,
+        "sidebar": "left",
         "items": [
           "HTMX - Aplicaciones Basadas en Hipermedia",
           "HTML5 y Web Semántica",
@@ -386,20 +389,10 @@
           "Motores de Plantillas (Handlebars, Panini, Mustache)"
         ]
       },
-      {
-        "category": "Tecnologías Enterprise Anteriores",
-        "proficiency": 3,
-        "items": [
-          "Java y J2EE",
-          "Spring Framework, Struts, Hibernate",
-          "PHP y WordPress",
-          "Yii Framework, Zend Framework",
-          "Servidores de Aplicaciones Enterprise (Tomcat, JBoss, WebLogic)"
-        ]
-      },
       {
         "category": "Tecnologías Backend",
         "proficiency": 5,
+        "sidebar": "left",
         "items": [
           "Go - Stack Principal Actual",
           "Hono Framework - Servidor Web de Alto Rendimiento",
@@ -409,9 +402,22 @@
           "Diseño y Optimización de Bases de Datos"
         ]
       },
+      {
+        "category": "Tecnologías Enterprise Anteriores",
+        "proficiency": 3,
+        "sidebar": "left",
+        "items": [
+          "Java y J2EE",
+          "Spring Framework, Struts, Hibernate",
+          "PHP y WordPress",
+          "Yii Framework, Zend Framework",
+          "Servidores de Aplicaciones Enterprise (Tomcat, JBoss, WebLogic)"
+        ]
+      },
       {
         "category": "Bases de Datos",
         "proficiency": 4,
+        "sidebar": "right",
         "items": [
           "PostgreSQL",
           "MySQL",
@@ -425,6 +431,7 @@
       {
         "category": "Infraestructura y Servidores",
         "proficiency": 5,
+        "sidebar": "right",
         "items": [
           "Administración de Servidores Linux",
           "Despliegue y Configuración de VPS",
@@ -436,6 +443,7 @@
       {
         "category": "DevOps y CI/CD",
         "proficiency": 5,
+        "sidebar": "right",
         "items": [
           "Diseño e Implementación de Pipelines CI/CD",
           "Soluciones de Despliegue Personalizadas",
@@ -447,6 +455,7 @@
       {
         "category": "Gestión de Equipos",
         "proficiency": 4,
+        "sidebar": "right",
         "items": [
           "Preparación y puesta en marcha de proyectos",
           "Comunicación fluida con los clientes",
@@ -458,6 +467,7 @@
       {
         "category": "Herramientas de Diseño",
         "proficiency": 3,
+        "sidebar": "right",
         "items": [
           "Corel Draw",
           "Adobe PhotoShop",
@@ -798,9 +808,9 @@
       "technologies": ["JavaScript", "React", "Node.js", "PHP", "WordPress", "Desarrollo Web"],
       "shortDescription": "Colección de proyectos de clientes y sitios web donde contribuí al desarrollo, implementación y soluciones técnicas en diversas industrias.",
       "responsibilities": [
-        "<img src='/static/images/projects/twentic.png' alt='Lidering'><div><strong><a href='https://lidering.com' target='_blank' rel='noopener noreferrer'>Lidering</a></strong> (a través de Twentic): Desarrollo de plataforma de gestión inmobiliaria y propiedades</div>",
+        "<img src='/static/images/projects/lidering.png' alt='Lidering'><div><strong><a href='https://lidering.com' target='_blank' rel='noopener noreferrer'>Lidering</a></strong> (a través de Twentic): Desarrollo de plataforma de gestión inmobiliaria y propiedades</div>",
-        "<img src='/static/images/projects/twentic.png' alt='Jorpack'><div><strong><a href='https://jorpack.com' target='_blank' rel='noopener noreferrer'>Jorpack</a></strong> (a través de Twentic): Soluciones de embalaje industrial y sitio web corporativo</div>",
+        "<img src='/static/images/projects/jorpack.png' alt='Jorpack'><div><strong><a href='https://jorpack.com' target='_blank' rel='noopener noreferrer'>Jorpack</a></strong> (a través de Twentic): Soluciones de embalaje industrial y sitio web corporativo</div>",
-        "<iconify-icon icon='mdi:bike' width='60' height='60' class='default-company-icon'></iconify-icon><div><strong><a href='https://deliverybikesbcn.com/' target='_blank' rel='noopener noreferrer'>Delivery Bikes BCN</a></strong>: Plataforma de servicio de entrega en bicicleta para Barcelona</div>",
+        "<img src='/static/images/projects/deliverybikes.png' alt='Delivery Bikes BCN'><div><strong><a href='https://deliverybikesbcn.com/' target='_blank' rel='noopener noreferrer'>Delivery Bikes BCN</a></strong>: Plataforma de servicio de entrega en bicicleta para Barcelona</div>",
         "<iconify-icon icon='mdi:security' width='60' height='60' class='default-company-icon'></iconify-icon><div><strong><a href='https://mobbeel.com' target='_blank' rel='noopener noreferrer'>Mobbeel</a></strong>: Sitio web de soluciones de autenticación biométrica y verificación de identidad</div>"
       ]
     }

internal/handlers/cv.go

@@ -199,20 +199,21 @@ func (h *CVHandler) ExportPDF(w http.ResponseWriter, r *http.Request) {
 }
 
 // splitSkills splits skill categories between left (page 1) and right (page 2) sidebars
-// Left sidebar shows first 7 categories, right sidebar shows remaining categories
+// Each category explicitly specifies which sidebar it belongs to via the "sidebar" field
 func splitSkills(skills []models.SkillCategory) (left, right []models.SkillCategory) {
 	if len(skills) == 0 {
 		return nil, nil
 	}
 
-	// Split at index 7 (first 7 items on left)
+	// Filter by sidebar field
-	splitIndex := 7
+	for _, skill := range skills {
-	if len(skills) < splitIndex {
+		if skill.Sidebar == "right" {
-		return skills, nil
+			right = append(right, skill)
+		} else {
+			// Default to left if not specified or if set to "left"
+			left = append(left, skill)
+		}
 	}
-
-	left = skills[:splitIndex]
-	right = skills[splitIndex:]
 
 	return left, right
 }

internal/models/cv.go

@@ -89,6 +89,7 @@ type SkillCategory struct {
 	Category    string   `json:"category"`
 	Proficiency int      `json:"proficiency"`
 	Items       []string `json:"items"`
+	Sidebar     string   `json:"sidebar"` // "left" or "right"
 }
 
 type Language struct {

static/css/main.css

@@ -1899,3 +1899,158 @@ html {
         height: 45px;
     }
 }
+
+/* ========================================
+   Desktop: Ensure Sidebar Content Visible (>1280px)
+   ======================================== */
+
+@media (min-width: 1281px) {
+    /* Ensure sidebar content is always visible in desktop view */
+    .sidebar-content {
+        max-height: none !important;
+        opacity: 1 !important;
+        overflow: visible !important;
+        display: block !important;
+        margin-top: 10px !important;
+    }
+
+    .skill-category .sidebar-content,
+    .cv-sidebar-section .sidebar-content {
+        max-height: none !important;
+        opacity: 1 !important;
+        overflow: visible !important;
+    }
+
+    .sidebar-title::after {
+        display: none !important;
+    }
+
+    .sidebar-title {
+        cursor: default !important;
+    }
+}
+
+/* ========================================
+   Responsive: Medium Screens (1024px - 1280px)
+   ======================================== */
+
+@media (min-width: 1024px) and (max-width: 1280px) {
+
+    /* ========== Global Font Size Reduction ========== */
+    html {
+        font-size: 14px; /* Reduced from default 16px */
+    }
+
+    .cv-name {
+        font-size: 1.8em; /* Reduced from 2.2em */
+    }
+
+    .sidebar-title {
+        font-size: 0.95rem;
+    }
+
+    .sidebar-content {
+        font-size: 0.9rem;
+    }
+
+    .experience-item h3,
+    .project-item h3 {
+        font-size: 1rem;
+    }
+
+    .experience-item p,
+    .project-item p,
+    .experience-item li,
+    .project-item li {
+        font-size: 0.85rem;
+    }
+    
+    /* ========== Selector Labels - Hide, Show on Hover ========== */
+    .selector-label {
+        max-width: 0;
+        overflow: hidden;
+        opacity: 0;
+        transition: all 0.3s ease;
+        white-space: nowrap;
+    }
+    
+    .selector-group:hover .selector-label {
+        max-width: 200px;
+        opacity: 1;
+        margin-right: 0.75rem;
+    }
+    
+    /* ========== Language Selector - Collapse to EN/ES ========== */
+    .language-selector .selector-btn {
+        position: relative;
+        padding: 0.4rem 0.8rem;
+        min-width: 50px;
+        font-size: 0; /* Hide actual text */
+        overflow: visible;
+    }
+
+    /* Show only short version (EN/ES) */
+    .language-selector .selector-btn::before {
+        content: attr(data-short);
+        font-size: 1rem; /* Restore font size for pseudo-element */
+        opacity: 1;
+    }
+
+    /* On hover, show full text */
+    .language-selector:hover .selector-btn,
+    .language-selector .selector-btn:hover {
+        font-size: 1rem; /* Restore font size */
+        padding: 0.4rem 1rem;
+        min-width: auto;
+    }
+
+    .language-selector:hover .selector-btn::before,
+    .language-selector .selector-btn:hover::before {
+        content: ''; /* Hide short version */
+        opacity: 0;
+    }
+    
+    /* ========== Action Buttons - Icon Only, Expand on Hover ========== */
+    .action-btn {
+        position: relative;
+        width: 45px;
+        overflow: hidden;
+        transition: width 0.3s ease, padding 0.3s ease;
+        white-space: nowrap;
+        text-indent: 0;
+    }
+    
+    /* Hide button text, keep icon */
+    .action-btn iconify-icon {
+        flex-shrink: 0;
+    }
+    
+    .action-btn {
+        font-size: 0;
+        padding: 0 0.65rem;
+        justify-content: center;
+    }
+    
+    /* On hover, show text */
+    .action-btn:hover {
+        width: auto;
+        font-size: 0.95rem;
+        padding: 0.65rem 1.5rem;
+        gap: 0.5rem;
+    }
+    
+    /* ========== Sidebar Content - Hide Text, Show on Hover ========== */
+    .sidebar-content {
+        max-height: 0;
+        overflow: hidden;
+        opacity: 0;
+    }
+
+    /* Show sidebar content on hover */
+    .skill-category:hover .sidebar-content,
+    .cv-sidebar-section:hover .sidebar-content {
+        max-height: 1000px;
+        opacity: 1;
+        margin-top: 10px;
+    }
+}

templates/index.html

@@ -110,10 +110,10 @@
 
                 <!-- Language selector (after title) -->
                 <div class="language-selector">
-                    <button class="selector-btn {{if eq .Lang "en"}}active{{end}}" onclick="selectLanguage('en')" aria-label="English">
+                    <button class="selector-btn {{if eq .Lang "en"}}active{{end}}" data-short="EN" onclick="selectLanguage('en')" aria-label="English">
                         English
                     </button>
-                    <button class="selector-btn {{if eq .Lang "es"}}active{{end}}" onclick="selectLanguage('es')" aria-label="Español">
+                    <button class="selector-btn {{if eq .Lang "es"}}active{{end}}" data-short="ES" onclick="selectLanguage('es')" aria-label="Español">
                         Español
                     </button>
                 </div>