/* ============================================
   Knowledge System UI Styles for OpenMUD
   Matches mockup design with 2-column grid layout
   Uses theme variables from theme.css
   ============================================ */

/* Knowledge window positioning and base styles */
#knowledge-window {
  position: absolute;
  top: 120px;
  left: 300px;
  width: 900px;
  max-width: 90vw;
  max-height: 80vh;
  background: var(--theme-bg-secondary);
  border: 2px solid var(--theme-border-primary);
  border-radius: 4px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.8);
  z-index: 9999;
  display: none;
  flex-direction: column;
}

/* Dragging state for knowledge window */
#knowledge-window.window-dragging {
  transition: none !important;
  user-select: none;
}

/* Window header drag handle styling */
#knowledge-window .window-header {
  cursor: move;
  user-select: none;
}

#knowledge-window .window-header:active {
  cursor: grabbing;
}

/* Override window-content to use flex layout */
#knowledge-window .window-content {
  display: flex;
  flex-direction: column;
  padding: 0;
  gap: 0;
  overflow: hidden;
}

/* ============================================
   Two-Column Grid Layout
   ============================================ */

.knowledge-body {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

.knowledge-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 16px;
  padding: 12px;
  height: 100%;
  overflow: hidden;
}

/* ============================================
   Left Sidebar - Knowledge List
   ============================================ */

.knowledge-sidebar {
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: hidden;
}

/* Knowledge Summary */
.knowledge-summary {
  background: var(--theme-bg-tertiary);
  border: 1px solid var(--theme-border-secondary);
  border-radius: 2px;
  padding: 8px;
  font-size: 12px;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 4px;
}

.summary-row:last-child {
  margin-bottom: 0;
}

.summary-label {
  color: var(--theme-text-muted);
}

.summary-value {
  color: var(--theme-info);
  font-weight: bold;
}

/* Search and Filter Controls */
.knowledge-controls {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.knowledge-search-input {
  width: 100%;
  padding: 6px 8px;
  background: var(--theme-bg-input);
  border: 1px solid var(--theme-border-secondary);
  border-radius: 3px;
  color: var(--theme-text-primary);
  font-family: var(--theme-font-family);
  font-size: 12px;
}

.knowledge-search-input:focus {
  outline: none;
  border-color: var(--theme-accent-green);
}

.knowledge-search-input::placeholder {
  color: var(--theme-text-muted);
}

/* Discovered Toggle */
.knowledge-options {
  display: flex;
  align-items: center;
}

.discovered-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-size: 11px;
  color: var(--theme-text-secondary);
  user-select: none;
}

.discovered-toggle input[type="checkbox"] {
  cursor: pointer;
}

.discovered-toggle:hover {
  color: var(--theme-text-primary);
}

/* Filter Buttons */
.knowledge-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.filter-btn {
  padding: 4px 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  color: var(--theme-text-secondary);
  font-size: 11px;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.filter-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.filter-btn.active {
  background: rgba(76, 175, 80, 0.2);
  border-color: var(--theme-room-name);
}

/* Knowledge List */
.knowledge-list {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding-right: 4px;
}

.knowledge-list::-webkit-scrollbar {
  width: 6px;
}

.knowledge-list::-webkit-scrollbar-track {
  background: var(--theme-bg-primary);
}

.knowledge-list::-webkit-scrollbar-thumb {
  background: var(--theme-border-primary);
  border-radius: 3px;
}

.knowledge-list::-webkit-scrollbar-thumb:hover {
  background: var(--theme-border-highlight);
}

/* ============================================
   Knowledge Item (Mockup Style)
   ============================================ */

.knowledge-item {
  background: var(--theme-bg-tertiary);
  border: 1px solid var(--theme-border-secondary);
  border-radius: 2px;
  padding: 8px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: all 0.2s;
}

.knowledge-item:hover {
  background: #333333;
  border-color: var(--theme-border-primary);
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.knowledge-item.selected {
  border-color: var(--theme-room-name);
  background: rgba(76, 175, 80, 0.1);
  color: var(--theme-room-name);
}

.knowledge-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.knowledge-item-title {
  display: flex;
  align-items: center;
  gap: 6px;
}

.knowledge-name {
  color: var(--theme-text-primary);
  font-size: 13px;
  font-weight: bold;
  text-transform: capitalize;
}

.knowledge-category {
  color: var(--theme-text-muted);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Knowledge uses skill-tier classes from components.css for consistency */

/* Progress Bar */
.knowledge-progress {
  margin-top: 6px;
}

.knowledge-progress-bar {
  height: 16px;
  background: var(--theme-bg-primary);
  border: 1px solid var(--theme-border-secondary);
  border-radius: 2px;
  position: relative;
  overflow: hidden;
}

.knowledge-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #9C27B0, #BA68C8);
  transition: width 0.3s ease;
  position: absolute;
  left: 0;
  top: 0;
}

.knowledge-progress-text {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  font-size: 11px;
  color: var(--theme-text-primary);
  text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.8);
  z-index: 1;
  white-space: nowrap;
}

/* Quick Stats */
.knowledge-quick-stats {
  display: flex;
  justify-content: space-between;
  margin-top: 6px;
  font-size: 10px;
  color: var(--theme-text-muted);
}

.quick-stat-value {
  color: var(--theme-text-secondary);
}

/* ============================================
   Right Panel - Detail View
   ============================================ */

.knowledge-detail {
  background: var(--theme-bg-primary);
  border: 1px solid var(--theme-border-secondary);
  border-radius: 3px;
  padding: 16px;
  overflow-y: auto;
}

.knowledge-detail::-webkit-scrollbar {
  width: 8px;
}

.knowledge-detail::-webkit-scrollbar-track {
  background: var(--theme-bg-primary);
}

.knowledge-detail::-webkit-scrollbar-thumb {
  background: var(--theme-border-primary);
  border-radius: 4px;
}

/* Detail Placeholder */
.detail-placeholder {
  text-align: center;
  padding: 40px 20px;
  color: var(--theme-text-muted);
}

.placeholder-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.placeholder-text {
  font-size: 14px;
  line-height: 1.6;
}

/* Detail Header */
.detail-header {
  border-bottom: 1px solid var(--theme-border-secondary);
  padding-bottom: 12px;
  margin-bottom: 16px;
}

.detail-title {
  color: var(--theme-room-name);
  font-size: 18px;
  text-transform: capitalize;
  margin-bottom: 8px;
}

.detail-category {
  color: var(--theme-text-muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.detail-description {
  color: var(--theme-text-secondary);
  font-size: 13px;
  line-height: 1.6;
  margin-top: 8px;
  font-style: italic;
}

/* Rank Display with Stars */
.rank-display {
  margin-bottom: 16px;
  background: var(--theme-bg-tertiary);
  border: 1px solid var(--theme-border-primary);
  border-radius: 2px;
  padding: 12px;
}

.rank-stars {
  font-size: 24px;
  color: #FFD700;
  letter-spacing: 4px;
  margin-bottom: 8px;
  text-shadow: 0 0 4px rgba(255, 215, 0, 0.5);
}

.rank-stars .empty {
  text-shadow: none;
}

.rank-progress-text {
  color: var(--theme-text-primary);
  font-size: 13px;
  margin-bottom: 4px;
}

.rank-next-text {
  color: var(--theme-text-muted);
  font-size: 12px;
}

/* Bonus Section */
.bonus-section {
  margin-bottom: 16px;
}

.section-title {
  color: var(--theme-room-name);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-bottom: 1px solid var(--theme-border-secondary);
  padding-bottom: 6px;
  margin-bottom: 8px;
}

.bonus-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.bonus-item {
  background: var(--theme-bg-tertiary);
  border: 1px solid var(--theme-border-secondary);
  border-radius: 2px;
  padding: 8px;
}

.bonus-label {
  color: var(--theme-text-muted);
  font-size: 11px;
  margin-bottom: 4px;
}

.bonus-value {
  color: var(--theme-accent-green);
  font-size: 16px;
  font-weight: bold;
}

.bonus-next {
  color: var(--theme-text-muted);
  font-size: 10px;
  margin-top: 2px;
}

/* Statistics Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.knowledge-stat-item {
  background: var(--theme-bg-tertiary);
  border: 1px solid var(--theme-border-secondary);
  border-radius: 2px;
  padding: 8px;
}

.knowledge-stat-item .stat-label {
  color: var(--theme-text-muted);
  font-size: 11px;
  margin-bottom: 4px;
}

.knowledge-stat-item .stat-value {
  color: var(--theme-info);
  font-size: 16px;
  font-weight: bold;
}

/* Next Rank Preview */
.next-rank-preview {
  background: rgba(76, 175, 80, 0.1);
  border: 1px solid var(--theme-room-name);
  border-radius: 2px;
  padding: 12px;
  margin-top: 16px;
}

.next-rank-title {
  color: var(--theme-accent-green);
  font-size: 13px;
  font-weight: bold;
  margin-bottom: 8px;
}

.next-rank-bonus {
  color: var(--theme-text-primary);
  font-size: 12px;
  margin-bottom: 4px;
}

.next-rank-bonus strong {
  color: var(--theme-accent-green);
}

/* No Data Message */
.no-data {
  text-align: center;
  padding: 20px;
  color: var(--theme-text-muted);
  font-size: 13px;
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 900px) {
  #knowledge-window {
    width: 90%;
    max-width: 700px;
  }

  .knowledge-grid {
    grid-template-columns: 1fr;
  }

  .knowledge-sidebar {
    max-height: 300px;
  }
}

@media (max-width: 600px) {
  #knowledge-window {
    width: 95%;
    top: 60px;
    left: 2.5%;
  }

  .knowledge-filters {
    flex-direction: column;
  }

  .filter-btn {
    width: 100%;
  }

  .bonus-grid,
  .stats-grid {
    grid-template-columns: 1fr;
  }
}