/**
 * Stili Frontend Showcase AI Business Pro - VERSIONE PULITA
 * File: frontend/css/showcase-frontend.css
 * 
 * Design moderno con card layout, filtri interattivi e preview documenti
 * Coerente con il design system del plugin
 * 
 * @package AI_Business_Pro
 */

/* ===== VARIABILI CSS (COERENTI CON IL PLUGIN) ===== */
:root {
  /* Colori brand */
  --aibp-primary: #1D4ED8;
  --aibp-primary-light: #3B82F6;
  --aibp-primary-dark: #1E40AF;
  --aibp-primary-50: #EFF6FF;
  
  /* Colori funzionali */
  --aibp-success: #10B981;
  --aibp-warning: #F59E0B;
  --aibp-error: #EF4444;
  --aibp-info: #06B6D4;
  
  /* Grigi */
  --aibp-gray-50: #F9FAFB;
  --aibp-gray-100: #F3F4F6;
  --aibp-gray-200: #E5E7EB;
  --aibp-gray-300: #D1D5DB;
  --aibp-gray-400: #9CA3AF;
  --aibp-gray-500: #6B7280;
  --aibp-gray-600: #4B5563;
  --aibp-gray-700: #374151;
  --aibp-gray-800: #1F2937;
  --aibp-gray-900: #111827;
  
  /* Spacing */
  --aibp-spacing-xs: 0.25rem;
  --aibp-spacing-sm: 0.5rem;
  --aibp-spacing-md: 1rem;
  --aibp-spacing-lg: 1.5rem;
  --aibp-spacing-xl: 2rem;
  --aibp-spacing-2xl: 3rem;
  
  /* Border radius */
  --aibp-radius-sm: 0.375rem;
  --aibp-radius-md: 0.5rem;
  --aibp-radius-lg: 0.75rem;
  --aibp-radius-xl: 1rem;
  --aibp-radius-2xl: 1.5rem;
  
  /* Shadows */
  --aibp-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --aibp-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --aibp-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --aibp-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Transizioni */
  --aibp-transition: all 0.2s ease-in-out;
  --aibp-transition-slow: all 0.3s ease-in-out;
  
  /* Z-index layers */
  --aibp-z-modal: 10000;
  --aibp-z-overlay: 9999;
  --aibp-z-dropdown: 1000;
  --aibp-z-header: 100;
}

/* ===== RESET E BASE ===== */
.aibp-showcase-container {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--aibp-gray-800);
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--aibp-spacing-lg);
}

.aibp-showcase-container *,
.aibp-showcase-container *::before,
.aibp-showcase-container *::after {
  box-sizing: border-box;
}

/* ===== FILTRI CATEGORIA ===== */
.aibp-showcase-filters {
  margin-bottom: var(--aibp-spacing-2xl);
  padding: var(--aibp-spacing-lg);
  background: linear-gradient(135deg, var(--aibp-gray-50) 0%, white 100%);
  border-radius: var(--aibp-radius-xl);
  border: 1px solid var(--aibp-gray-200);
  box-shadow: var(--aibp-shadow-sm);
}

.aibp-filter-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--aibp-spacing-sm);
  justify-content: center;
}

.aibp-filter-btn {
  background: white;
  border: 2px solid var(--aibp-gray-200);
  border-radius: var(--aibp-radius-lg);
  padding: var(--aibp-spacing-sm) var(--aibp-spacing-lg);
  cursor: pointer;
  transition: var(--aibp-transition);
  display: flex;
  align-items: center;
  gap: var(--aibp-spacing-xs);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--aibp-gray-700);
  text-decoration: none;
  min-height: 44px;
  position: relative;
  overflow: hidden;
}

.aibp-filter-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--category-color, var(--aibp-primary)) 0%, transparent 100%);
  opacity: 0;
  transition: var(--aibp-transition);
  z-index: -1;
}

.aibp-filter-btn:hover {
  border-color: var(--category-color, var(--aibp-primary));
  color: var(--category-color, var(--aibp-primary));
  transform: translateY(-2px);
  box-shadow: var(--aibp-shadow-md);
}

.aibp-filter-btn:hover::before {
  opacity: 0.1;
}

.aibp-filter-btn.active {
  background: var(--category-color, var(--aibp-primary));
  border-color: var(--category-color, var(--aibp-primary));
  color: white;
  box-shadow: var(--aibp-shadow-lg);
}

.aibp-filter-btn.active::before {
  opacity: 0;
}

.aibp-filter-icon {
  font-size: 1.2em;
  line-height: 1;
}

.aibp-filter-text {
  font-weight: 600;
}

.aibp-filter-count {
  background: rgba(255, 255, 255, 0.3);
  color: currentColor;
  padding: var(--aibp-spacing-xs) var(--aibp-spacing-sm);
  border-radius: var(--aibp-radius-sm);
  font-size: 0.8rem;
  font-weight: 700;
  min-width: 24px;
  text-align: center;
}

.aibp-filter-btn.active .aibp-filter-count {
  background: rgba(255, 255, 255, 0.25);
}

/* ===== CONTENUTO PRINCIPALE ===== */
.aibp-showcase-content {
  position: relative;
}

/* ===== GRIGLIA AZIENDE ===== */
.aibp-showcase-grid {
  display: grid;
  gap: var(--aibp-spacing-xl);
  margin-bottom: var(--aibp-spacing-xl);
}

.aibp-showcase-grid[data-columns="1"] {
  grid-template-columns: 1fr;
}

.aibp-showcase-grid[data-columns="2"] {
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
}

.aibp-showcase-grid[data-columns="3"] {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.aibp-showcase-grid[data-columns="4"] {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* ===== CARD AZIENDA ===== */
.aibp-company-card {
  background: white;
  border-radius: var(--aibp-radius-xl);
  overflow: hidden;
  box-shadow: var(--aibp-shadow-md);
  border: 1px solid var(--aibp-gray-200);
  transition: var(--aibp-transition-slow);
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.aibp-company-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--aibp-shadow-xl);
  border-color: var(--category-color, var(--aibp-primary));
}

/* ===== HEADER CARD ===== */
.aibp-card-header {
  position: relative;
  background: linear-gradient(135deg, var(--category-color, var(--aibp-primary)) 0%, var(--aibp-gray-100) 100%);
  padding: var(--aibp-spacing-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--aibp-spacing-md);
  min-height: 140px;
}

.aibp-featured-badge {
  position: absolute;
  top: var(--aibp-spacing-md);
  right: var(--aibp-spacing-md);
  background: var(--aibp-warning);
  color: white;
  padding: var(--aibp-spacing-xs) var(--aibp-spacing-sm);
  border-radius: var(--aibp-radius-lg);
  font-size: 0.75rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  box-shadow: var(--aibp-shadow-md);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.aibp-company-logo {
  width: 80px;
  height: 80px;
  background: white;
  border-radius: var(--aibp-radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  box-shadow: var(--aibp-shadow-lg);
  border: 3px solid rgba(255, 255, 255, 0.8);
}

.aibp-company-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: var(--aibp-spacing-xs);
}

.aibp-logo-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--aibp-gray-50);
  color: var(--aibp-gray-400);
}

.aibp-building-icon {
  font-size: 2rem;
}

.aibp-company-category {
  background: rgba(255, 255, 255, 0.9);
  color: var(--category-color, var(--aibp-primary));
  padding: var(--aibp-spacing-xs) var(--aibp-spacing-md);
  border-radius: var(--aibp-radius-lg);
  font-size: 0.8rem;
  font-weight: 600;
  border-left: 4px solid var(--category-color, var(--aibp-primary));
  box-shadow: var(--aibp-shadow-sm);
  backdrop-filter: blur(10px);
}

/* ===== CONTENUTO CARD ===== */
.aibp-card-content {
  padding: var(--aibp-spacing-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--aibp-spacing-md);
}

.aibp-company-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--aibp-gray-900);
  margin: 0;
  line-height: 1.2;
  text-align: center;
}

.aibp-company-description {
  color: var(--aibp-gray-600);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0;
  text-align: center;
  flex: 1;
}

.aibp-company-meta {
  display: flex;
  flex-direction: column;
  gap: var(--aibp-spacing-xs);
}

.aibp-meta-item {
  display: flex;
  align-items: center;
  gap: var(--aibp-spacing-xs);
  color: var(--aibp-gray-600);
  font-size: 0.85rem;
  padding: var(--aibp-spacing-xs);
  border-radius: var(--aibp-radius-md);
  transition: var(--aibp-transition);
}

.aibp-meta-item:hover {
  background: var(--aibp-gray-50);
  color: var(--aibp-gray-800);
}

.aibp-meta-icon {
  font-size: 1em;
  width: 20px;
  text-align: center;
}

/* ===== DOCUMENTI ===== */
.aibp-card-documents {
  padding: var(--aibp-spacing-lg);
  border-top: 1px solid var(--aibp-gray-100);
  background: var(--aibp-gray-50);
}

.aibp-documents-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--aibp-gray-800);
  margin: 0 0 var(--aibp-spacing-md) 0;
  display: flex;
  align-items: center;
  gap: var(--aibp-spacing-xs);
}

.aibp-docs-icon {
  font-size: 1.1em;
}

.aibp-documents-list {
  display: flex;
  flex-direction: column;
  gap: var(--aibp-spacing-sm);
}

.aibp-document-item {
  background: white;
  border: 1px solid var(--aibp-gray-200);
  border-radius: var(--aibp-radius-lg);
  padding: var(--aibp-spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--aibp-spacing-md);
  transition: var(--aibp-transition);
}

.aibp-document-item:hover {
  border-color: var(--aibp-primary-light);
  box-shadow: var(--aibp-shadow-md);
}

.aibp-doc-info {
  display: flex;
  align-items: center;
  gap: var(--aibp-spacing-md);
  flex: 1;
}

.aibp-doc-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--aibp-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.aibp-doc-details {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
  min-width: 0;
}

.aibp-doc-title {
  font-weight: 600;
  color: var(--aibp-gray-900);
  font-size: 0.9rem;
  line-height: 1.2;
  display: block;
}

.aibp-doc-service {
  color: var(--aibp-gray-600);
  font-size: 0.8rem;
  font-weight: 500;
}

.aibp-doc-pages {
  color: var(--aibp-gray-500);
  font-size: 0.75rem;
}

/* ===== PULSANTI DOCUMENTI ===== */
.aibp-doc-actions {
  display: flex;
  gap: var(--aibp-spacing-xs);
}

.aibp-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--aibp-spacing-xs);
  padding: var(--aibp-spacing-xs) var(--aibp-spacing-sm);
  border: none;
  border-radius: var(--aibp-radius-md);
  font-size: 0.8rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: var(--aibp-transition);
  white-space: nowrap;
  min-height: 32px;
}

.aibp-btn-preview {
  background: var(--aibp-primary);
  color: white;
}

.aibp-btn-preview:hover {
  background: var(--aibp-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--aibp-shadow-md);
}

.aibp-btn-download {
  background: var(--aibp-success);
  color: white;
}

.aibp-btn-download:hover {
  background: color-mix(in srgb, var(--aibp-success) 80%, black);
  transform: translateY(-1px);
  box-shadow: var(--aibp-shadow-md);
}

.aibp-btn-icon {
  font-size: 0.9em;
}

.aibp-btn-text {
  font-weight: 600;
}

/* ===== FOOTER CARD ===== */
.aibp-card-footer {
  padding: var(--aibp-spacing-md) var(--aibp-spacing-lg);
  border-top: 1px solid var(--aibp-gray-100);
  background: var(--aibp-gray-50);
}

.aibp-website-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--aibp-spacing-xs);
  color: var(--aibp-primary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  padding: var(--aibp-spacing-sm);
  border-radius: var(--aibp-radius-md);
  transition: var(--aibp-transition);
  border: 1px solid transparent;
}

.aibp-website-link:hover {
  background: white;
  border-color: var(--aibp-primary);
  text-decoration: none;
  color: var(--aibp-primary-dark);
}

.aibp-link-icon {
  font-size: 1em;
}

.aibp-external-icon {
  font-size: 0.8em;
  opacity: 0.7;
}

/* ===== STATI VUOTI E LOADING ===== */
.aibp-showcase-empty-state {
  text-align: center;
  padding: var(--aibp-spacing-2xl);
  color: var(--aibp-gray-500);
  grid-column: 1 / -1;
}

.aibp-showcase-empty-state .aibp-empty-icon {
  font-size: 4rem;
  margin-bottom: var(--aibp-spacing-lg);
  display: block;
}

.aibp-showcase-empty-state h3 {
  color: var(--aibp-gray-700);
  margin-bottom: var(--aibp-spacing-sm);
  font-size: 1.25rem;
}

.aibp-showcase-empty-state p {
  margin-bottom: var(--aibp-spacing-lg);
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

.aibp-showcase-loading {
  text-align: center;
  padding: var(--aibp-spacing-2xl);
  color: var(--aibp-gray-500);
}

.aibp-loading-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--aibp-gray-200);
  border-top-color: var(--aibp-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--aibp-spacing-md);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.aibp-showcase-empty {
  text-align: center;
  padding: var(--aibp-spacing-2xl);
  color: var(--aibp-gray-500);
}

.aibp-showcase-empty .aibp-empty-icon {
  font-size: 3rem;
  margin-bottom: var(--aibp-spacing-lg);
  display: block;
}

.aibp-showcase-empty h3 {
  color: var(--aibp-gray-700);
  margin-bottom: var(--aibp-spacing-sm);
}

.aibp-showcase-empty p {
  margin: 0;
}

/* ===== BUSINESS TIMELINE ===== */
.aibp-business-timeline {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.875rem;
  color: var(--aibp-gray-600);
  background: var(--aibp-gray-100);
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  border: 1px solid var(--aibp-gray-200);
}

.aibp-business-timeline.status-launching {
  background: #FEF3C7;
  color: #92400E;
  border-color: #FCD34D;
}

.aibp-business-timeline.status-planning {
  background: #DBEAFE;
  color: #1E40AF;
  border-color: #93C5FD;
}

.aibp-business-timeline.status-established {
  background: #D1FAE5;
  color: #065F46;
  border-color: #A7F3D0;
}

.aibp-company-info {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.aibp-company-info span {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.875rem;
  color: var(--aibp-gray-600);
  background: var(--aibp-gray-50);
  padding: 0.25rem 0.5rem;
  border-radius: 0.375rem;
  border: 1px solid var(--aibp-gray-200);
}

/* ===========================================
   CSS MODAL PDF - VERSIONE COMPLETA E AGGIORNATA
   SOSTITUIRE INTEGRALMENTE la sezione dal commento sopra fino alla fine
   =========================================== */

/* Modal Base - DIMENSIONI AUMENTATE */
.aibp-modal-pdf .aibp-modal-content {
  width: 98vw; /* Aumentato da 95vw */
  height: 98vh; /* Aumentato da 95vh */
  max-width: 1400px; /* Aumentato da 1200px */
  max-height: 98vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: white;
  border-radius: 8px;
  box-shadow: var(--aibp-shadow-xl);
}

/* Header Modal - PIÙ COMPATTO per dare spazio al PDF */
.aibp-modal-pdf .aibp-modal-header {
  flex-shrink: 0;
  padding: 0.75rem 1rem; /* Ridotto da 1rem */
  border-bottom: 1px solid var(--aibp-gray-200);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  background: white;
}

.aibp-modal-title-section h3 {
  margin: 0 0 0.25rem 0; /* Ridotto spacing */
  font-size: 1.125rem; /* Leggermente più piccolo */
  font-weight: 600;
  color: var(--aibp-gray-900);
}

.aibp-modal-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem; /* Ridotto gap */
  font-size: 0.8125rem; /* Più piccolo */
  color: var(--aibp-gray-600);
}

.aibp-modal-meta span {
  padding: 0.125rem 0.5rem; /* Più compatto */
  background: var(--aibp-gray-100);
  border-radius: 0.75rem;
  white-space: nowrap;
}

.aibp-company {
  background: #EEF2FF;
  color: #3730A3;
}

.aibp-service {
  background: #F0FDF4;
  color: #166534;
}

.aibp-pages {
  background: #FEF3C7;
  color: #92400E;
}

/* Body Modal - Container principale */
.aibp-modal-pdf .aibp-modal-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 0;
  margin: 0;
}

/* PDF Container Principal */
.aibp-pdf-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--aibp-gray-50);
}

/* PDF Viewer Container */
.aibp-pdf-viewer-container {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--aibp-gray-50);
}

/* Controlli PDF - MIGLIORATI */
.aibp-pdf-controls {
  flex-shrink: 0;
  padding: 0.5rem 1rem; /* Leggermente ridotto */
  background: white;
  border-bottom: 1px solid var(--aibp-gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.aibp-pdf-controls .aibp-btn {
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
  border-radius: var(--aibp-radius-md);
  border: 1px solid var(--aibp-gray-300);
  background: white;
  color: var(--aibp-gray-700);
  cursor: pointer;
  transition: var(--aibp-transition);
  white-space: nowrap;
}

.aibp-pdf-controls .aibp-btn:hover:not(:disabled) {
  background: var(--aibp-gray-50);
  border-color: var(--aibp-gray-400);
}

.aibp-pdf-controls .aibp-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background: var(--aibp-gray-100);
}

.aibp-pdf-page-info {
  font-size: 0.875rem;
  color: var(--aibp-gray-600);
  font-weight: 500;
  white-space: nowrap;
}

/* Controlli Zoom - PIÙ EVIDENTI */
.aibp-pdf-zoom-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem; /* Aumentato gap */
}

.aibp-pdf-zoom-controls .aibp-btn {
  width: 2.25rem; /* Leggermente più grandi */
  height: 2.25rem;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700; /* Più bold */
  font-size: 1rem; /* Più grandi */
}

#aibp-pdf-zoom-level {
  font-size: 0.875rem; /* Leggermente più grande */
  color: var(--aibp-gray-700); /* Più visibile */
  font-weight: 600; /* Più bold */
  min-width: 4rem; /* Più largo */
  text-align: center;
  padding: 0.25rem 0.5rem;
  background: var(--aibp-gray-100);
  border-radius: 0.375rem;
  border: 1px solid var(--aibp-gray-300);
}

/* Container Canvas - OTTIMIZZATO PER ZOOM */
.aibp-pdf-canvas-container {
  flex: 1;
  overflow: auto;
  background: var(--aibp-gray-50);
  padding: 20px;
  text-align: center;
  
  /* ✅ DIMENSIONI OTTIMIZZATE PER ZOOM */
  min-height: 400px; /* Aumentato da 300px */
  max-height: 80vh; /* Aumentato da 60vh */
  display: block;
  position: relative;
}

/* Container delle pagine - PIÙ LARGO PER ZOOM */
.aibp-pdf-pages-container {
  max-width: 1000px; /* Aumentato da 800px */
  margin: 0 auto;
  padding: 10px; /* Spazio interno per evitare bordi tagliati */
}

/* Singola pagina PDF - ADATTATIVA AL ZOOM */
.aibp-pdf-page {
  margin: 0 auto 30px auto;
  box-shadow: var(--aibp-shadow-md);
  background: white;
  padding: 10px;
  border-radius: 8px;
  display: inline-block;
  width: auto; /* Cambiato da 90% per permettere zoom */
  max-width: 95%; /* Limita solo il massimo */
}

/* Canvas della pagina - OTTIMIZZATO PER ZOOM */
.aibp-pdf-canvas {
  display: block;
  margin: 0 auto;
  border: 1px solid var(--aibp-gray-200);
  border-radius: 4px;
  background: white;
  max-width: none; /* Rimosso per permettere zoom */
  height: auto;
  
  /* ✅ TRANSIZIONI SMOOTH PER ZOOM */
  transition: transform 0.2s ease;
  
  /* Protezioni anti-copia */
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
  -webkit-user-drag: none;
}

/* Numero pagina */
.aibp-pdf-page-number {
  margin-top: 10px;
  padding: 5px;
  font-size: 0.8125rem;
  color: var(--aibp-gray-500);
  background: rgba(255, 255, 255, 0.9);
  border-radius: 4px;
  border: 1px solid var(--aibp-gray-200);
  text-align: center;
}

/* Loading spinner */
.aibp-pdf-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  color: var(--aibp-gray-500);
  font-size: 0.875rem;
  padding: 3rem;
  height: 100%;
}

.aibp-spinner {
  width: 3rem;
  height: 3rem;
  border: 3px solid var(--aibp-gray-200);
  border-top: 3px solid var(--aibp-primary);
  border-radius: 50%;
  animation: aibp-spin 1s linear infinite;
}

@keyframes aibp-spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Footer Modal - PIÙ COMPATTO */
.aibp-modal-pdf .aibp-modal-footer {
  flex-shrink: 0;
  padding: 0.75rem 1rem; /* Ridotto da 1rem */
  border-top: 1px solid var(--aibp-gray-200);
  background: white;
  display: flex;
  justify-content: flex-end;
}

/* Fallback per browser non supportati */
.aibp-pdf-fallback {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 3rem;
  text-align: center;
  color: var(--aibp-gray-500);
}

.aibp-fallback-icon {
  font-size: 4rem;
  margin-bottom: 0.5rem;
}

.aibp-pdf-fallback h4 {
  margin: 0 0 0.5rem 0;
  color: var(--aibp-gray-700);
  font-size: 1.25rem;
  font-weight: 600;
}

.aibp-pdf-fallback p {
  margin: 0 0 1.5rem 0;
  color: var(--aibp-gray-500);
  font-size: 0.875rem;
  line-height: 1.5;
  max-width: 300px;
}

.aibp-pdf-fallback .aibp-btn {
  padding: 0.75rem 1.5rem;
  font-size: 0.875rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

/* Alert protezioni */
.aibp-quick-alert {
  position: fixed;
  top: 20px;
  right: 20px;
  background: rgba(220, 38, 38, 0.95);
  color: white;
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  z-index: calc(var(--aibp-z-modal) + 1);
  opacity: 0;
  transition: opacity 0.3s ease;
  box-shadow: var(--aibp-shadow-lg);
  backdrop-filter: blur(4px);
}

/* Protezioni anti-copia */
.aibp-modal-pdf * {
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
}

.aibp-modal-pdf .aibp-pdf-canvas {
  -webkit-user-drag: none;
  -khtml-user-drag: none;
  -moz-user-drag: none;
  -o-user-drag: none;
  user-drag: none;
}

/* Scrollbar più grandi per gestire contenuto zoomato */
.aibp-pdf-canvas-container::-webkit-scrollbar {
  width: 12px; /* Aumentato da 8px */
  height: 12px;
}

.aibp-pdf-canvas-container::-webkit-scrollbar-track {
  background: var(--aibp-gray-100);
  border-radius: 6px;
}

.aibp-pdf-canvas-container::-webkit-scrollbar-thumb {
  background: var(--aibp-gray-400); /* Più visibile */
  border-radius: 6px;
}

.aibp-pdf-canvas-container::-webkit-scrollbar-thumb:hover {
  background: var(--aibp-gray-500);
}

/* Responsive - ADATTATO ALLE NUOVE DIMENSIONI */
@media (max-width: 768px) {
  .aibp-modal-pdf .aibp-modal-content {
    width: 100%;
    height: 100vh;
    max-height: 100vh;
    margin: 0;
    border-radius: 0;
  }
  
  .aibp-pdf-canvas-container {
    padding: 10px;
    max-height: 80vh; /* Più spazio su mobile */
  }
  
  .aibp-pdf-pages-container {
    max-width: 95%; /* Più largo su mobile */
  }
  
  .aibp-pdf-page {
    margin-bottom: 20px;
    padding: 5px;
    width: auto;
    max-width: 98%;
  }
  
  .aibp-pdf-controls {
    padding: 0.5rem;
    gap: 0.5rem;
    flex-wrap: wrap;
  }
  
  .aibp-pdf-zoom-controls {
    gap: 0.5rem;
  }
  
  .aibp-pdf-zoom-controls .aibp-btn {
    width: 2rem;
    height: 2rem;
    font-size: 0.875rem;
  }
  
  #aibp-pdf-zoom-level {
    font-size: 0.8125rem;
    min-width: 3.5rem;
  }
}

/* Mobile piccolo */
@media (max-width: 480px) {
  .aibp-pdf-canvas-container {
    max-height: 85vh; /* Ancora più spazio su mobile piccolo */
    padding: 5px;
  }
  
  .aibp-pdf-page {
    padding: 3px;
    max-width: 99%;
  }
  
  .aibp-pdf-controls .aibp-btn {
    font-size: 0.8125rem;
    padding: 0.375rem 0.5rem;
  }
  
  #aibp-pdf-zoom-level {
    font-size: 0.75rem;
    min-width: 3rem;
  }
  
  .aibp-pdf-zoom-controls .aibp-btn {
    width: 1.75rem;
    height: 1.75rem;
    font-size: 0.8125rem;
  }
}

/* Dark mode support - AGGIORNATO */
@media (prefers-color-scheme: dark) {
  .aibp-modal-pdf .aibp-modal-content {
    background: #1f2937;
    color: #f9fafb;
  }
  
  .aibp-modal-pdf .aibp-modal-header,
  .aibp-modal-pdf .aibp-modal-footer {
    border-color: #374151;
    background: #1f2937;
  }
  
  .aibp-modal-title-section h3 {
    color: #f9fafb;
  }
  
  .aibp-pdf-container,
  .aibp-pdf-viewer-container,
  .aibp-pdf-canvas-container {
    background: #111827;
  }
  
  .aibp-pdf-controls {
    background: #1f2937;
    border-color: #374151;
  }
  
  .aibp-pdf-controls .aibp-btn {
    background: #374151;
    border-color: #4b5563;
    color: #f9fafb;
  }
  
  .aibp-pdf-controls .aibp-btn:hover:not(:disabled) {
    background: #4b5563;
    border-color: #6b7280;
  }
  
  .aibp-pdf-page-info,
  #aibp-pdf-zoom-level {
    color: #d1d5db;
    background: #374151;
    border-color: #4b5563;
  }
  
  .aibp-pdf-canvas {
    border-color: #374151;
  }
  
  .aibp-pdf-loading {
    color: #9ca3af;
  }
  
  .aibp-spinner {
    border-color: #374151;
    border-top-color: #60a5fa;
  }
  
  .aibp-pdf-canvas-container::-webkit-scrollbar-track {
    background: #374151;
  }
  
  .aibp-pdf-canvas-container::-webkit-scrollbar-thumb {
    background: #4b5563;
  }
  
  .aibp-pdf-canvas-container::-webkit-scrollbar-thumb:hover {
    background: #6b7280;
  }
}

/* ===== ACCESSIBILITÀ ===== */
@media (prefers-reduced-motion: reduce) {
  .aibp-pdf-canvas {
    transition: none;
  }
  
  .aibp-spinner {
    animation: none;
    border-top-color: var(--aibp-gray-300);
  }
}

@media (prefers-contrast: high) {
  .aibp-pdf-controls .aibp-btn {
    border-width: 2px;
  }
  
  #aibp-pdf-zoom-level {
    border-width: 2px;
  }
}

/* Focus styles per accessibilità keyboard */
.aibp-pdf-controls .aibp-btn:focus,
#aibp-pdf-zoom-level:focus {
  outline: 2px solid var(--aibp-primary);
  outline-offset: 2px;
}