/* Builder Global Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background-color: #f5f5f5;
  color: #333;
}

.builder-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.builder-header {
  background: #2c3e50;
  color: white;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.builder-header h1 {
  font-size: 1.5rem;
  font-weight: 600;
}

.header-actions {
  display: flex;
  gap: 0.5rem;
}

.header-actions button {
  padding: 0.5rem 1rem;
  background: #3498db;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background 0.2s;
}

.header-actions button:hover {
  background: #2980b9;
}

/* Dropdown Menu */
.dropdown {
  position: relative;
}

.dropdown-toggle {
  padding: 0.5rem 1rem;
  background: #3498db;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background 0.2s;
}

.dropdown-toggle:hover {
  background: #2980b9;
}

.dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  background: white;
  border: 1px solid #ddd;
  border-radius: 4px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  min-width: 200px;
  z-index: 1000;
}

.dropdown-menu.show {
  display: block;
}

.dropdown-menu button {
  display: block;
  width: 100%;
  padding: 0.75rem 1rem;
  background: white;
  color: #333;
  border: none;
  text-align: left;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background 0.2s;
}

.dropdown-menu button:hover {
  background: #f5f5f5;
}

.dropdown-divider {
  height: 1px;
  background: #ddd;
  margin: 0.25rem 0;
}

/* Dialog */
.dialog-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.5);
  z-index: 2000;
  align-items: center;
  justify-content: center;
}

.dialog-overlay.show {
  display: flex;
}

.dialog {
  background: white;
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
  max-width: 600px;
  width: 90%;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
}

.dialog-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem;
  border-bottom: 1px solid #ddd;
}

.dialog-header h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
}

.dialog-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: #999;
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: background 0.2s, color 0.2s;
}

.dialog-close:hover {
  background: #f5f5f5;
  color: #333;
}

.dialog-body {
  padding: 1.5rem;
  flex: 1;
  overflow-y: auto;
}

.dialog-body p {
  margin-bottom: 1rem;
  color: #666;
}

.dialog-body textarea {
  width: 100%;
  min-height: 200px;
  padding: 1rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-family: 'Courier New', monospace;
  font-size: 0.85rem;
  resize: vertical;
}

.dialog-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid #ddd;
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

.dialog-footer button {
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background 0.2s;
}

.dialog-footer .btn-primary {
  background: #3498db;
  color: white;
}

.dialog-footer .btn-primary:hover {
  background: #2980b9;
}

.dialog-footer button:not(.btn-primary) {
  background: #ecf0f1;
  color: #333;
}

.dialog-footer button:not(.btn-primary):hover {
  background: #d5dbdc;
}

/* Main Layout: Two Columns */
.builder-main {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  padding: 1.5rem;
  max-width: 1800px;
  margin: 0 auto;
  width: 100%;
}

/* Panel Styles */
.editor-panel,
.preview-panel {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Mode Toggle */
.mode-toggle {
  display: flex;
  gap: 0.5rem;
  padding: 1rem;
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.mode-btn {
  flex: 1;
  padding: 0.75rem 1.5rem;
  border: 2px solid #e0e0e0;
  background: white;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  color: #555;
  transition: all 0.2s;
}

.mode-btn:hover {
  border-color: #3498db;
  color: #3498db;
}

.mode-btn.active {
  background: #3498db;
  border-color: #3498db;
  color: white;
  box-shadow: 0 2px 4px rgba(52, 152, 219, 0.3);
}

/* Mode-specific visibility */
.board-setup-only {
  display: block;
}

.solution-recording-only {
  display: none;
}

body.solution-mode .board-setup-only {
  display: none;
}

body.solution-mode .solution-recording-only {
  display: block;
}

section {
  background: white;
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

section h2 {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  color: #2c3e50;
  border-bottom: 2px solid #3498db;
  padding-bottom: 0.5rem;
}

/* Form Controls */
.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.25rem;
  font-weight: 500;
  font-size: 0.9rem;
  color: #555;
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group select {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 0.9rem;
}

.form-group.inline {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.form-group.inline label {
  margin-bottom: 0;
  white-space: nowrap;
}

.form-group.inline input,
.form-group.inline select {
  width: auto;
  flex: 1;
}

/* Board with Palette Container */
.board-with-palette {
  display: flex;
  gap: 1rem;
  justify-content: center;
  align-items: flex-start;
  margin-bottom: 1rem;
}

/* Piece Palette - Two Column Layout */
.piece-palette {
  display: flex;
  gap: 0.5rem;
  padding: 0.5rem;
  background: #f8f9fa;
  border-radius: 4px;
  border: 2px solid #e0e0e0;
}

.palette-column {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.palette-piece {
  width: 45px;
  height: 45px;
  font-size: 2rem;
  border: 2px solid #ddd;
  background: white;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.palette-piece:hover {
  border-color: #3498db;
  transform: scale(1.05);
  box-shadow: 0 2px 8px rgba(52, 152, 219, 0.3);
}

.palette-piece.active {
  border-color: #3498db;
  background: #e3f2fd;
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.3);
  transform: scale(1.05);
}

/* Board Actions */
.board-actions {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.board-actions button {
  padding: 0.5rem 1rem;
  background: #ecf0f1;
  border: 1px solid #bdc3c7;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background 0.2s;
}

.board-actions button:hover {
  background: #bdc3c7;
}

.btn-trash {
  background: #e74c3c !important;
  color: white;
  border-color: #c0392b !important;
}

.btn-trash:hover {
  background: #c0392b !important;
}

/* Editor Board */
.editor-board {
  width: 100%;
  max-width: 500px;
  margin: 0 auto 1rem;
  aspect-ratio: 1;
}

/* Fix coordinate positioning - move to right side (Lichess style) */
/* This ensures the coordinate colors match the square colors correctly */
#editor-board .cg-wrap coords.ranks,
#editor-board coords.ranks,
#preview-container .cg-wrap coords.ranks,
#preview-container coords.ranks {
  left: auto !important;
  right: 4px !important;
  align-items: flex-end !important;
}

#editor-board .cg-wrap coords.files,
#editor-board coords.files,
#preview-container .cg-wrap coords.files,
#preview-container coords.files {
  text-align: right !important;
  left: auto !important;
  right: 0px !important;
}

/* FEN Display */
.fen-display {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.fen-display label {
  font-weight: 600;
  font-size: 0.9rem;
}

.fen-display input {
  flex: 1;
  padding: 0.5rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-family: monospace;
  font-size: 0.85rem;
  background: #f8f9fa;
}

.fen-display button {
  padding: 0.5rem 1rem;
  background: #3498db;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

.fen-display button:hover {
  background: #2980b9;
}

.fen-status {
  font-weight: 600;
  font-size: 0.85rem;
}

.fen-status.valid {
  color: #27ae60;
}

.fen-status.invalid {
  color: #e74c3c;
}

/* Position Controls */
.position-controls {
  border-top: 1px solid #eee;
  padding-top: 1rem;
}

.castling-rights label {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  margin-right: 0.5rem;
}

.castling-rights input[type="checkbox"] {
  width: auto;
}

/* Solution Section */
.solution-controls {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.solution-controls button {
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background 0.2s;
}

.btn-primary {
  background: #27ae60;
  color: white;
}

.btn-primary:hover {
  background: #229954;
}

.btn-primary:disabled {
  background: #95a5a6;
  cursor: not-allowed;
}

.btn-secondary {
  background: #e74c3c;
  color: white;
}

.btn-secondary:hover {
  background: #c0392b;
}

.btn-secondary:disabled {
  background: #95a5a6;
  cursor: not-allowed;
}

.solution-controls button:not(.btn-primary):not(.btn-secondary) {
  background: #ecf0f1;
  border: 1px solid #bdc3c7;
}

.solution-controls button:not(.btn-primary):not(.btn-secondary):hover {
  background: #bdc3c7;
}

/* Solution List */
.solution-list {
  max-height: 400px;
  overflow-y: auto;
  border: 1px solid #ddd;
  border-radius: 4px;
}

#solution-table {
  width: 100%;
  border-collapse: collapse;
}

#solution-table th {
  background: #f8f9fa;
  padding: 0.75rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.85rem;
  border-bottom: 2px solid #ddd;
  position: sticky;
  top: 0;
}

#solution-table td {
  padding: 0.75rem;
  border-bottom: 1px solid #eee;
  font-size: 0.9rem;
}

#solution-table tr.empty-state td {
  text-align: center;
  color: #95a5a6;
  font-style: italic;
  padding: 2rem;
}

#solution-table tbody tr:hover:not(.empty-state) {
  background: #f8f9fa;
}

.move-actions {
  display: flex;
  gap: 0.25rem;
}

.move-actions button {
  padding: 0.25rem 0.5rem;
  font-size: 0.8rem;
  border: 1px solid #ddd;
  background: white;
  border-radius: 3px;
  cursor: pointer;
}

.move-actions button:hover {
  background: #e3f2fd;
  border-color: #3498db;
}

/* Preview Section */
.preview-info {
  padding: 0.75rem;
  margin-bottom: 1rem;
  background: #e3f2fd;
  border-left: 4px solid #2196f3;
  border-radius: 4px;
  font-size: 0.9rem;
  color: #1565c0;
  display: none;
}

.preview-info.show {
  display: block;
}

.preview-info strong {
  font-weight: 600;
}

#preview-container {
  display: flex;
  justify-content: center;
  padding: 1rem;
  background: #f8f9fa;
  border-radius: 4px;
  min-height: 500px;
}

/* Export Section */
.export-actions {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.export-output {
  margin-top: 1rem;
  padding: 1rem;
  background: #f8f9fa;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-family: monospace;
  font-size: 0.85rem;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 300px;
  overflow-y: auto;
  display: none;
}

.export-output.show {
  display: block;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background: #2c3e50;
  color: white;
  padding: 1rem 1.5rem;
  border-radius: 4px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  min-width: 250px;
  animation: slideIn 0.3s ease-out;
}

.toast.success {
  background: #27ae60;
}

.toast.error {
  background: #e74c3c;
}

.toast.warning {
  background: #f39c12;
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* Responsive */
@media (max-width: 1200px) {
  .builder-main {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .builder-header {
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
  }

  .header-actions {
    flex-wrap: wrap;
    width: 100%;
  }

  .header-actions button {
    flex: 1;
  }

  /* Mobile: Horizontal palette layout */
  .board-with-palette {
    flex-direction: column;
    align-items: center;
  }

  .piece-palette {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
    max-width: 500px;
  }

  .palette-column {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .palette-piece {
    width: 40px;
    height: 40px;
    font-size: 1.8rem;
  }
}

/* Lichess Import Dialog Specific Styles */
#lichess-puzzle-input {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid #ddd;
  border-radius: 4px;
  font-size: 1rem;
  margin-bottom: 1rem;
  transition: border-color 0.2s;
}

#lichess-puzzle-input:focus {
  outline: none;
  border-color: #3498db;
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.lichess-examples {
  background: #f8f9fa;
  padding: 1rem;
  border-radius: 4px;
  border-left: 4px solid #3498db;
  margin-bottom: 1rem;
}

.lichess-examples .examples-label {
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

.lichess-examples ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.lichess-examples li {
  padding: 0.25rem 0;
  font-size: 0.85rem;
  color: #555;
}

.lichess-examples code {
  background: #e3f2fd;
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
  font-family: 'Courier New', monospace;
  font-size: 0.8rem;
  color: #1565c0;
}

.lichess-error {
  background: #fee;
  border: 1px solid #fcc;
  border-left: 4px solid #e74c3c;
  color: #c0392b;
  padding: 0.75rem;
  border-radius: 4px;
  margin-top: 1rem;
  font-size: 0.9rem;
}

.lichess-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  margin-top: 1rem;
}

.lichess-loading p {
  margin-top: 1rem;
  color: #3498db;
  font-weight: 500;
}

/* Spinner Animation */
.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid #f3f3f3;
  border-top: 4px solid #3498db;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* Disable button states */
.dialog-footer button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background: #95a5a6 !important;
}

/* Premove Section */
.premove-section {
  margin-bottom: 1.5rem;
  padding: 1rem;
  background: #f8f9fa;
  border-radius: 6px;
  border: 1px solid #e0e0e0;
}

.premove-section h3 {
  font-size: 1rem;
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 0.5rem;
}

.premove-help {
  font-size: 0.85rem;
  color: #666;
  margin-bottom: 1rem;
  font-style: italic;
}

.premove-controls {
  margin-bottom: 0.5rem;
}

.premove-checkbox {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  user-select: none;
}

.premove-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.premove-checkbox span {
  font-weight: 500;
  font-size: 0.9rem;
  color: #2c3e50;
}

.premove-info {
  padding: 0.75rem;
  background: #e8f5e9;
  border-left: 4px solid #27ae60;
  border-radius: 4px;
  margin-top: 0.75rem;
  font-size: 0.85rem;
  color: #2c3e50;
}

.premove-active {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.premove-icon {
  color: #27ae60;
  font-weight: bold;
  font-size: 1rem;
}