Transform popup into top-right control panel

✨ New Features:
- Popup now positioned in top-right corner (not center)
- Permanent floating control panel with 3 buttons
- Control panel shows selected count
- Buttons: Download Selected, Download ALL, Clear Selection
- Clicking buttons triggers downloads from within the page
- Progress panel appears OVER control panel during downloads
- After download completes, returns to control panel

🎯 User Experience:
- No need to open extension popup anymore
- All controls directly on the page
- Real-time progress tracking
- Cleaner workflow

📱 UI:
- Purple gradient design
- Responsive button layout
- Progress bar with percentage
- Auto-hide progress, show controls

content.js

@@ -25,36 +25,85 @@
 
     // Estilos inline para máxima compatibilidad
     popup.style.position = 'fixed';
-    popup.style.top = '50%';
+    popup.style.top = '20px';
-    popup.style.left = '50%';
+    popup.style.right = '20px';
-    popup.style.transform = 'translate(-50%, -50%)';
+    popup.style.width = '320px';
-    popup.style.width = '450px';
     popup.style.background = '#667eea';
     popup.style.backgroundImage = 'linear-gradient(135deg, #667eea 0%, #764ba2 100%)';
     popup.style.color = 'white';
-    popup.style.padding = '30px';
+    popup.style.padding = '20px';
-    popup.style.borderRadius = '15px';
+    popup.style.borderRadius = '12px';
-    popup.style.boxShadow = '0 10px 50px rgba(0,0,0,0.6)';
+    popup.style.boxShadow = '0 8px 32px rgba(0,0,0,0.5)';
     popup.style.zIndex = '999999'; // ¡Muy alto!
     popup.style.fontFamily = 'Arial, sans-serif';
     popup.style.display = 'block'; // Visible por defecto
     popup.style.backdropFilter = 'blur(10px)';
 
     popup.innerHTML = `
-      <div style="text-align: center; margin-bottom: 20px;">
+      <div style="text-align: center;">
-        <h3 style="margin: 0 0 15px 0; font-size: 20px; font-weight: bold;">📦 Descargando Manga</h3>
+        <h3 style="margin: 0 0 15px 0; font-size: 18px; font-weight: bold;">📦 Mass Downloader</h3>
-        <div id="progress-title" style="font-size: 16px; font-weight: bold; margin-bottom: 10px;">Preparando...</div>
+
+        <!-- Panel de control (cuando no está descargando) -->
+        <div id="control-panel" style="display: block;">
+          <div style="font-size: 12px; margin-bottom: 10px; opacity: 0.9;">
+            Seleccionados: <span id="selected-count">0</span>
+          </div>
+          <button id="btn-download-selected" style="width: 100%; padding: 10px; margin: 5px 0; background: #4CAF50; color: white; border: none; border-radius: 6px; cursor: pointer; font-weight: bold;">⬇️ Descargar Seleccionados</button>
+          <button id="btn-download-all" style="width: 100%; padding: 10px; margin: 5px 0; background: #2196F3; color: white; border: none; border-radius: 6px; cursor: pointer; font-weight: bold;">📚 Descargar TODOS</button>
+          <button id="btn-clear-selection" style="width: 100%; padding: 10px; margin: 5px 0; background: #ff9800; color: white; border: none; border-radius: 6px; cursor: pointer; font-weight: bold;">🗑️ Limpiar Selección</button>
+        </div>
+
+        <!-- Panel de progreso (cuando está descargando) -->
+        <div id="progress-panel" style="display: none;">
+          <div id="progress-title" style="font-size: 14px; font-weight: bold; margin: 10px 0;">Preparando...</div>
+          <div style="background: rgba(255,255,255,0.4); height: 12px; border-radius: 6px; overflow: hidden;">
+            <div id="progress-bar-fill" style="height: 100%; width: 0%; background: white; transition: width 0.3s ease;"></div>
+          </div>
+          <div style="display: flex; justify-content: space-between; margin-top: 8px; font-size: 12px; font-weight: bold;">
+            <span id="progress-count">0 / 0</span>
+            <span id="progress-percent">0%</span>
+          </div>
+          <div id="progress-status" style="margin-top: 10px; font-size: 11px; opacity: 0.9;"></div>
+        </div>
       </div>
-      <div style="background: rgba(255,255,255,0.4); height: 15px; border-radius: 8px; overflow: hidden; box-shadow: inset 0 2px 4px rgba(0,0,0,0.2);">
-        <div id="progress-bar-fill" style="height: 100%; width: 0%; background: white; transition: width 0.4s ease; box-shadow: 0 2px 8px rgba(255,255,255,0.5);"></div>
-      </div>
-      <div style="display: flex; justify-content: space-between; margin-top: 12px; font-size: 14px; font-weight: bold;">
-        <span id="progress-count">0 / 0</span>
-        <span id="progress-percent">0%</span>
-      </div>
-      <div id="progress-status" style="margin-top: 15px; font-size: 13px; text-align: center; opacity: 0.9;"></div>
     `;
 
+    // Agregar event listeners a los botones
+    setTimeout(() => {
+      const btnDownloadSelected = document.getElementById('btn-download-selected');
+      const btnDownloadAll = document.getElementById('btn-download-all');
+      const btnClearSelection = document.getElementById('btn-clear-selection');
+
+      if (btnDownloadSelected) {
+        btnDownloadSelected.addEventListener('click', () => {
+          console.log('🎯 Click: Descargar Seleccionados');
+          // Enviar mensaje al popup.js para ejecutar la descarga
+          chrome.runtime.sendMessage({ action: 'triggerDownloadSelected' });
+        });
+      }
+
+      if (btnDownloadAll) {
+        btnDownloadAll.addEventListener('click', () => {
+          console.log('🎯 Click: Descargar TODOS');
+          chrome.runtime.sendMessage({ action: 'triggerDownloadAll' });
+        });
+      }
+
+      if (btnClearSelection) {
+        btnClearSelection.addEventListener('click', () => {
+          console.log('🎯 Click: Limpiar Selección');
+          selectedMangas.clear();
+          updateSelectedCount();
+          const countEl = document.getElementById('selected-count');
+          if (countEl) countEl.textContent = '0';
+        });
+      }
+
+      // Actualizar contador inicialmente
+      const countEl = document.getElementById('selected-count');
+      if (countEl) countEl.textContent = selectedMangas.size.toString();
+    }, 100);
+
     console.log('✅ Popup creado, agregando al DOM...');
     document.body.appendChild(popup);
     console.log('✅ Popup agregado al DOM:', popup);
@@ -78,6 +127,16 @@
     const percent = total > 0 ? Math.round((current / total) * 100) : 0;
     console.log(`📈 Porcentaje calculado: ${percent}%`);
 
+    // Cambiar a panel de progreso
+    const controlPanel = document.getElementById('control-panel');
+    const progressPanel = document.getElementById('progress-panel');
+
+    if (controlPanel && progressPanel) {
+      controlPanel.style.display = 'none';
+      progressPanel.style.display = 'block';
+      console.log('🔄 Cambiado a panel de progreso');
+    }
+
     const titleEl = document.getElementById('progress-title');
     const countEl = document.getElementById('progress-count');
     const percentEl = document.getElementById('progress-percent');
@@ -121,15 +180,28 @@
 
   // Ocultar progreso
   function hideProgress() {
+    console.log('🙈 hideProgress() llamado');
+
     const popup = document.getElementById('mass-downloader-progress-popup');
     if (popup) {
-      setTimeout(() => {
+      // Cambiar de vuelta al panel de control
-        popup.style.opacity = '0';
+      const controlPanel = document.getElementById('control-panel');
-        popup.style.transition = 'opacity 0.5s ease';
+      const progressPanel = document.getElementById('progress-panel');
-        setTimeout(() => {
+
-          popup.remove();
+      if (controlPanel && progressPanel) {
-        }, 500);
+        progressPanel.style.display = 'none';
-      }, 1000);
+        controlPanel.style.display = 'block';
+        console.log('🔄 Cambiado a panel de control');
+
+        // Actualizar contador
+        const countEl = document.getElementById('selected-count');
+        if (countEl) {
+          countEl.textContent = selectedMangas.size.toString();
+          console.log('🔢 Contador actualizado:', countEl.textContent);
+        }
+      }
+
+      // NO remover el popup, solo cambiar de panel
     }
   }
 
@@ -170,6 +242,22 @@
       console.log('🙈 Ocultando progreso');
       hideProgress();
       sendResponse({ success: true });
+    } else if (request.action === 'updateSelectedCount') {
+      const countEl = document.getElementById('selected-count');
+      if (countEl) {
+        countEl.textContent = request.count.toString();
+        console.log('🔢 Contador actualizado:', countEl.textContent);
+      }
+      sendResponse({ success: true });
+    } else if (request.action === 'triggerDownloadSelected') {
+      console.log('🎯 Trigger: Descargar Seleccionados');
+      // Enviar mensaje al popup.js para ejecutar la descarga
+      chrome.runtime.sendMessage({ action: 'executeDownloadSelected' });
+      sendResponse({ success: true });
+    } else if (request.action === 'triggerDownloadAll') {
+      console.log('🎯 Trigger: Descargar TODOS');
+      chrome.runtime.sendMessage({ action: 'executeDownloadAll' });
+      sendResponse({ success: true });
     } else {
       console.log('❓ Acción desconocida:', request.action);
     }