/* =============================================
   SEADEV STACK - Version Simple et Propre
   ============================================= */

:root {
  /* Use SeaDev standardized colors */
  --primary-color: var(--seadev-primary-dark, #012970);
  --secondary-color: var(--seadev-primary, #4154f1);
  --accent-color: var(--seadev-accent, #ee6c20);
  --success-color: var(--seadev-success, #15be56);
  --warning-color: var(--seadev-warning, #f39c12);
  --light-bg: var(--seadev-gray-50, #f8f9fa);
  --border-color: var(--seadev-gray-200, #dee2e6);
  --shadow-light: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-medium: 0 4px 8px rgba(0,0,0,0.15);
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

/* Container principal */
.seadev-stack-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: var(--light-bg);
  min-height: 100vh;
}

/* En-tête du stack */
.stack-header {
  text-align: center;
  margin: 0 auto 30px auto;
  padding: 15px 20px;
  max-width: 600px;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: white;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-medium);
}

.stack-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin: 0 0 10px 0;
  text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.stack-subtitle {
  font-size: 1.2rem;
  margin: 0 0 15px 0;
  opacity: 0.9;
  font-weight: 300;
}

.stack-description {
  font-size: 1rem;
  margin: 0 0 20px 0;
  opacity: 0.8;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.stack-metadata {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 15px;
  margin-top: 20px;
}

.metadata-badge {
  background: rgba(255,255,255,0.2);
  padding: 8px 12px;
  border-radius: 20px;
  font-size: 0.9rem;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.3);
}

/* Controls Section */
.stack-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 30px;
  padding: 20px;
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-light);
  align-items: center;
}

.search-container {
  flex: 1;
  min-width: 250px;
}

.search-input {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: 14px;
  transition: var(--transition);
  background: white;
}

.search-input:focus {
  outline: none;
  border-color: var(--secondary-color);
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.filter-container {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 16px;
  border: 2px solid var(--border-color);
  background: white;
  border-radius: var(--border-radius);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.filter-btn:hover {
  border-color: var(--secondary-color);
  background: rgba(52, 152, 219, 0.1);
}

.filter-btn.active {
  background: var(--secondary-color);
  color: white;
  border-color: var(--secondary-color);
}

.sort-container {
  min-width: 180px;
}

.sort-select, .category-filter-select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  background: white;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 12px center;
  background-repeat: no-repeat;
  background-size: 16px;
  padding-right: 40px;
}

.sort-select:focus, .category-filter-select:focus {
  outline: none;
  border-color: var(--secondary-color);
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.sort-select:hover, .category-filter-select:hover {
  border-color: var(--secondary-color);
  background-color: rgba(52, 152, 219, 0.02);
}

/* Enhanced styling for category filter dropdown */
.category-filter-select {
  font-weight: 500;
  color: var(--primary-color);
  background: linear-gradient(135deg, #fbfcfd 0%, #f8f9fa 100%);
  border: 2px solid var(--border-color);
  position: relative;
}

.category-filter-select:focus {
  background: white;
  border-color: var(--secondary-color);
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.15), 0 4px 12px rgba(52, 152, 219, 0.1);
}

.category-filter-select option {
  padding: 12px 16px;
  color: var(--primary-color);
  background-color: white;
  border-bottom: 1px solid #f0f0f0;
  font-weight: 400;
}

.category-filter-select option:first-child {
  font-weight: 600;
  color: var(--secondary-color);
  background: linear-gradient(135deg, rgba(52, 152, 219, 0.1) 0%, rgba(52, 152, 219, 0.05) 100%);
}

.category-filter-select option:hover {
  background: linear-gradient(135deg, rgba(52, 152, 219, 0.15) 0%, rgba(52, 152, 219, 0.08) 100%);
  color: var(--primary-color);
}

/* Active state indicator */
.category-filter-select:not([value=""]) {
  background: linear-gradient(135deg, rgba(52, 152, 219, 0.08) 0%, rgba(52, 152, 219, 0.03) 100%);
  border-color: var(--secondary-color);
  color: var(--secondary-color);
  font-weight: 600;
}

/* Custom select container with label */
.sort-container {
  position: relative;
  min-width: 200px;
}

.sort-container::before {
  content: "Filter by:";
  position: absolute;
  top: -20px;
  left: 0;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary-color);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  opacity: 0.8;
}

/* Loading state for dropdown */
.category-filter-select.loading {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M10 3v3M10 14v3M17 10h-3M7 10H4'/%3e%3c/svg%3e"), url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 36px center, right 12px center;
  animation: rotate 1s linear infinite;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Accessibility improvements */
.category-filter-select:focus-visible {
  outline: 2px solid var(--secondary-color);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .category-filter-select {
    border-width: 3px;
    border-color: #000;
  }
  
  .category-filter-select:focus {
    border-color: #0066cc;
    box-shadow: 0 0 0 3px #0066cc;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .category-filter-select {
    transition: none;
  }
  
  .category-filter-select.loading {
    animation: none;
  }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  .category-filter-select {
    background: linear-gradient(135deg, #2a2a2a 0%, #1f1f1f 100%);
    border-color: #404040;
    color: #e0e0e0;
  }
  
  .category-filter-select option {
    background-color: #2a2a2a;
    color: #e0e0e0;
    border-bottom-color: #404040;
  }
  
  .category-filter-select option:first-child {
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.2) 0%, rgba(52, 152, 219, 0.1) 100%);
    color: #74b9ff;
  }
  
  .sort-container::before {
    color: #b0b0b0;
  }
}

/* Toggle All Button */
.toggle-all-container {
  min-width: 120px;
}

.toggle-all-btn {
  width: 100%;
  padding: 10px 14px;
  border: 2px solid var(--accent-color);
  background: var(--accent-color);
  color: white;
  border-radius: var(--border-radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.toggle-all-btn:hover {
  background: #c0392b;
  border-color: #c0392b;
}

/* Grille des catégories */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 25px;
  margin-bottom: 40px;
}

/* Catégorie individuelle */
.stack-category {
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-light);
  overflow: hidden;
  transition: var(--transition);
  border-left: 4px solid var(--category-color, #666);
  position: relative;
}

.stack-category:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.stack-category.collapsed .tools-grid {
  display: none;
}

/* En-tête de catégorie */
.category-header {
  padding: 20px;
  background: linear-gradient(135deg, var(--category-color, #666) 0%, rgba(0,0,0,0.1) 100%);
  color: white;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.category-header:hover {
  background: linear-gradient(135deg, var(--category-color, #666) 0%, rgba(0,0,0,0.2) 100%);
}

.category-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
  flex-wrap: nowrap;
  gap: 10px;
}

.category-title {
  font-size: 1.4rem;
  font-weight: 600;
  margin: 0;
  text-shadow: 0 1px 2px rgba(0,0,0,0.3);
  flex: 1;
}

.category-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.category-description {
  font-size: 0.95rem;
  margin: 0 0 10px 0;
  opacity: 0.9;
  line-height: 1.4;
}

/* Collapsible Category Functionality */
.category-collapse-indicator {
  font-size: 1.2rem;
  font-weight: bold;
  transition: transform 0.3s ease;
  user-select: none;
  flex-shrink: 0;
}

.category-collapsed .category-collapse-indicator {
  transform: rotate(-90deg);
}

.category-content {
  overflow: hidden;
  transition: max-height 0.3s ease-out, opacity 0.3s ease-out;
  max-height: 1000px;
  opacity: 1;
}

.category-collapsed .category-content {
  max-height: 0;
  opacity: 0;
}

.category-header {
  cursor: pointer;
  user-select: none;
}

.category-header:focus {
  outline: 2px solid rgba(255, 255, 255, 0.5);
  outline-offset: 2px;
}

.tool-count {
  display: inline-block;
  background: rgba(255,255,255,0.2);
  padding: 4px 10px;
  border-radius: 15px;
  font-size: 0.8rem;
  font-weight: 500;
  backdrop-filter: blur(5px);
}

/* Tools Grid */
.tools-grid {
  padding: 20px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
  background: #fafbfc;
}

.tool-item {
  background: white;
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  text-align: center;
  border: 1px solid var(--border-color);
  transition: var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.tool-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--tool-color, var(--secondary-color));
  transform: scaleX(0);
  transition: var(--transition);
}

.tool-item:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-light);
  border-color: var(--tool-color, var(--secondary-color));
}

.tool-item:hover::before {
  transform: scaleX(1);
}

.tool-item:active {
  transform: translateY(0);
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
}

/* Summary Section */
.stack-summary {
  background: white;
  border-radius: var(--border-radius);
  padding: 30px;
  box-shadow: var(--shadow-light);
  margin-top: 40px;
}

.summary-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 20px;
}

.stat-item {
  text-align: center;
  padding: 20px;
  background: var(--light-bg);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.stat-item:hover {
  background: rgba(52, 152, 219, 0.1);
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--secondary-color);
  margin-bottom: 5px;
}

.stat-label {
  font-size: 0.9rem;
  color: #666;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 500;
}

/* Pied de page */
.stack-footer {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid #eee;
}

.stack-footer p {
  color: #888;
  margin: 0;
  line-height: 1.6;
}

/* Gestion d'erreur */
.stack-error {
  text-align: center;
  padding: 60px 20px;
  color: #666;
}

.stack-error h2 {
  color: #e74c3c;
  margin-bottom: 15px;
}

.retry-btn {
  background: #3498db;
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
  margin-top: 20px;
  transition: background 0.3s ease;
}

.retry-btn:hover {
  background: #2980b9;
}

/* État de chargement */
.seadev-stack-loading {
  text-align: center;
  padding: 60px 20px;
  color: #888;
}

.seadev-stack-loading::after {
  content: '⏳';
  font-size: 2rem;
  display: block;
  margin-bottom: 15px;
}

/* =============================================
   RESPONSIVE DESIGN
   ============================================= */

@media (max-width: 768px) {
  .seadev-stack-container {
    padding: 15px;
  }
  
  .stack-controls {
    flex-direction: column;
    align-items: stretch;
    gap: 15px;
  }
  
  .search-container {
    min-width: auto;
    order: 1;
  }
  
  .sort-container {
    min-width: auto;
    order: 2;
  }
  
  .toggle-all-container {
    min-width: auto;
    order: 3;
  }
  
  /* Enhanced mobile styling for category filter */
  .sort-container::before {
    position: static;
    display: block;
    margin-bottom: 8px;
    font-size: 11px;
  }
  
  .category-filter-select, .sort-select {
    padding: 14px 16px;
    font-size: 16px; /* Prevents zoom on iOS */
    border-radius: 10px;
  }
  
  .filter-container {
    justify-content: center;
  }
  
  .stack-title {
    font-size: 2rem;
  }
  
  .stack-subtitle {
    font-size: 1rem;
  }
  
  .stack-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .stack-category {
    border-radius: var(--border-radius);
  }
  
  .category-title-row {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .category-title {
    font-size: 1.2rem;
  }
  
  .tools-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 8px;
  }
  
  .summary-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .stack-title {
    font-size: 1.7rem;
  }
  
  .stack-category {
    border-radius: var(--border-radius);
  }
  
  .tools-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .tool-item {
    font-size: 0.8rem;
    padding: 8px 10px;
  }
  
  .summary-stats {
    grid-template-columns: 1fr;
  }
  
  .filter-container {
    gap: 6px;
  }
  
  .filter-btn {
    padding: 6px 12px;
    font-size: 0.8rem;
  }
}

/* Animations et États */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.stack-category {
  animation: fadeInUp 0.5s ease forwards;
}

.stack-category:nth-child(even) {
  animation-delay: 0.1s;
}

.stack-category:nth-child(odd) {
  animation-delay: 0.2s;
}

/* Tooltip */
.tool-tooltip {
  position: fixed;
  background: rgba(0,0,0,0.9);
  color: white;
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 0.8rem;
  z-index: 1000;
  pointer-events: none;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.2);
}

/* Print Styles */
@media print {
  .stack-controls {
    display: none;
  }
  
  .stack-category {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ddd;
  }
  
  .category-header {
    background: #f8f9fa !important;
    color: #333 !important;
  }
}