:root {
  --primary-color: #0066cc;
  --secondary-color: #6c757d;
  --danger-color: #dc3545;
  --success-color: #28a745;
  --warning-color: #ffc107;
  --info-color: #17a2b8;
  --background: #f5f5f5;
  --panel-background: #ffffff;
  --border-color: #dee2e6;
  --text-color: #212529;
  --text-muted: #6c757d;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--background);
  color: var(--text-color);
}

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

.app-header {
  background-color: var(--panel-background);
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.app-header h1 {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.error-message {
  background-color: #f8d7da;
  color: #721c24;
  padding: 0.75rem 1rem;
  border-radius: 4px;
  margin-top: 1rem;
  border: 1px solid #f5c6cb;
}

.app-content {
  flex: 1;
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: 1.5rem;
  padding: 1.5rem;
  max-width: 1600px;
  width: 100%;
  margin: 0 auto;
}

.left-panel {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.right-panel {
  display: flex;
  flex-direction: column;
}

.connection-panel,
.file-upload-panel,
.progress-panel,
.canvas-panel {
  background-color: var(--panel-background);
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border-color);
}

h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 1rem 0 0.5rem 0;
}

.detail-row {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-color);
}

.detail-row:last-child {
  border-bottom: none;
}

.detail-row .label {
  font-weight: 500;
  color: var(--text-muted);
}

.detail-row .value {
  font-weight: 600;
}

.status-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
  padding: 0.75rem;
  background-color: var(--background);
  border-radius: 4px;
}

.status-indicator {
  padding: 0.5rem 1rem;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
}

.status-indicator.status-16 { /* IDLE */
  background-color: #d1ecf1;
  color: #0c5460;
}

.status-indicator.status-17 { /* SEWING_WAIT */
  background-color: #d4edda;
  color: #155724;
}

.status-indicator.status-48 { /* SEWING */
  background-color: #fff3cd;
  color: #856404;
}

.status-indicator.status-49 { /* SEWING_COMPLETE */
  background-color: #d4edda;
  color: #155724;
}

.status-indicator.status-64 { /* COLOR_CHANGE_WAIT */
  background-color: #fff3cd;
  color: #856404;
}

.error-indicator {
  background-color: #f8d7da;
  color: #721c24;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.875rem;
}

.polling-indicator {
  color: var(--primary-color);
  font-size: 0.75rem;
  animation: pulse 1s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.3;
  }
}

.connection-actions,
.progress-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

button {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 4px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
  background-color: #0052a3;
}

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

.btn-secondary:hover:not(:disabled) {
  background-color: #5a6268;
}

.btn-danger {
  background-color: var(--danger-color);
  color: white;
}

.btn-danger:hover:not(:disabled) {
  background-color: #c82333;
}

.file-input {
  display: none;
}

.progress-bar {
  height: 8px;
  background-color: var(--border-color);
  border-radius: 4px;
  overflow: hidden;
  margin: 1rem 0;
}

.progress-fill {
  height: 100%;
  background-color: var(--primary-color);
  transition: width 0.3s;
}

/* Canvas container with Konva */
.canvas-container {
  position: relative;
  width: 100%;
  height: 600px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: #fafafa;
  overflow: hidden;
}

.canvas-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 600px;
  color: var(--text-muted);
  font-style: italic;
}

/* Canvas overlay elements */
.canvas-legend {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(255, 255, 255, 0.95);
  padding: 12px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  z-index: 10;
  backdrop-filter: blur(4px);
  max-width: 150px;
}

.canvas-legend h4 {
  margin: 0 0 8px 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-color);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 6px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.legend-item:last-child {
  margin-bottom: 0;
}

.legend-swatch {
  width: 20px;
  height: 20px;
  border-radius: 3px;
  border: 1px solid #000;
  flex-shrink: 0;
}

.legend-label {
  font-size: 12px;
  color: var(--text-color);
}

.canvas-dimensions {
  position: absolute;
  bottom: 165px;
  right: 20px;
  background: rgba(255, 255, 255, 0.95);
  padding: 8px 16px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  z-index: 11;
  backdrop-filter: blur(4px);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-color);
}

.canvas-offset-info {
  position: absolute;
  bottom: 80px;
  right: 20px;
  background: rgba(255, 255, 255, 0.95);
  padding: 10px 14px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  z-index: 11;
  backdrop-filter: blur(4px);
  min-width: 180px;
}

.offset-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.offset-value {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 4px;
}

.offset-hint {
  font-size: 10px;
  color: var(--text-muted);
  font-style: italic;
}

/* Zoom controls */
.zoom-controls {
  position: absolute;
  bottom: 20px;
  right: 20px;
  display: flex;
  gap: 8px;
  align-items: center;
  background: rgba(255, 255, 255, 0.95);
  padding: 8px 12px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  z-index: 10;
  backdrop-filter: blur(4px);
}

.zoom-btn {
  width: 32px;
  height: 32px;
  padding: 0;
  font-size: 18px;
  font-weight: bold;
  border: 1px solid var(--border-color);
  background: white;
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.zoom-btn:hover:not(:disabled) {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
  transform: translateY(-1px);
  box-shadow: 0 2px 6px rgba(0, 102, 204, 0.3);
}

.zoom-btn:active:not(:disabled) {
  transform: translateY(0);
}

.zoom-level {
  min-width: 50px;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-color);
  user-select: none;
}

.zoom-reset {
  margin-left: 4px;
  font-size: 20px;
}

.status-message {
  padding: 1rem;
  border-radius: 4px;
  margin: 1rem 0;
  font-weight: 500;
}

.status-message.success {
  background-color: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.status-message.warning {
  background-color: #fff3cd;
  color: #856404;
  border: 1px solid #ffeeba;
}

.status-message.info {
  background-color: #d1ecf1;
  color: #0c5460;
  border: 1px solid #bee5eb;
}

/* Color Block Progress Styles */
.color-blocks {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.color-block-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.color-block-item {
  padding: 0.75rem;
  border-radius: 4px;
  background-color: var(--background);
  border: 2px solid transparent;
  transition: all 0.3s;
}

.color-block-item.completed {
  border-color: var(--success-color);
  background-color: #f0f9f4;
}

.color-block-item.current {
  border-color: var(--primary-color);
  background-color: #e7f3ff;
  box-shadow: 0 2px 8px rgba(0, 102, 204, 0.2);
}

.color-block-item.pending {
  opacity: 0.6;
}

.block-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.color-swatch {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  border: 2px solid var(--border-color);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.block-label {
  font-weight: 600;
  flex: 1;
}

.block-status {
  font-size: 1.25rem;
  font-weight: bold;
  color: var(--text-muted);
}

.color-block-item.completed .block-status {
  color: var(--success-color);
}

.color-block-item.current .block-status {
  color: var(--primary-color);
}

.block-stitches {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.block-progress-bar {
  margin-top: 0.5rem;
  height: 4px;
  background-color: #fff;
  border-radius: 2px;
  overflow: hidden;
}

.block-progress-fill {
  height: 100%;
  background-color: var(--primary-color);
  transition: width 0.3s;
}

@media (max-width: 1024px) {
  .app-content {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   State-Based UX Safety Styles
   ========================================================================== */

/* Confirmation Dialog Styles */
.confirm-dialog-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.confirm-dialog {
  background-color: var(--panel-background);
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  max-width: 500px;
  width: 90%;
  margin: 1rem;
}

.confirm-dialog-danger {
  border-top: 4px solid #dc3545;
}

.confirm-dialog-warning {
  border-top: 4px solid #ffc107;
}

.confirm-dialog-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.confirm-dialog-header h3 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
}

.confirm-dialog-body {
  padding: 1.5rem;
}

.confirm-dialog-body p {
  margin: 0;
  line-height: 1.5;
  color: var(--text-color);
}

.confirm-dialog-actions {
  padding: 1rem 1.5rem;
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  border-top: 1px solid var(--border-color);
}

/* Enhanced Status Badge */
.status-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.875rem;
}

.status-badge-idle,
.status-badge-info {
  background-color: #d1ecf1;
  color: #0c5460;
  border: 1px solid #bee5eb;
}

.status-badge-active,
.status-badge-waiting,
.status-badge-warning {
  background-color: #fff3cd;
  color: #856404;
  border: 1px solid #ffeeba;
}

.status-badge-complete,
.status-badge-success {
  background-color: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.status-badge-interrupted,
.status-badge-error,
.status-badge-danger {
  background-color: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

.status-icon {
  font-size: 1.1rem;
  line-height: 1;
}

.status-text {
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* State Indicator Component */
.state-indicator {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  border-radius: 8px;
  margin: 1rem 0;
  border-left: 4px solid transparent;
}

.state-indicator-idle,
.state-indicator-info {
  background-color: #e7f3ff;
  border-left-color: #0066cc;
}

.state-indicator-active,
.state-indicator-waiting,
.state-indicator-warning {
  background-color: #fff8e1;
  border-left-color: #ffc107;
}

.state-indicator-complete,
.state-indicator-success {
  background-color: #e8f5e9;
  border-left-color: #28a745;
}

.state-indicator-interrupted,
.state-indicator-error,
.state-indicator-danger {
  background-color: #ffebee;
  border-left-color: #dc3545;
}

.state-icon {
  font-size: 2rem;
  line-height: 1;
}

.state-info {
  flex: 1;
}

.state-label {
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.state-description {
  font-size: 0.875rem;
  color: #666;
}

/* Enhanced Progress Visualization */
.progress-bar {
  height: 12px;
  background-color: var(--border-color);
  border-radius: 6px;
  overflow: hidden;
  margin: 1rem 0;
  position: relative;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), #0052a3);
  transition: width 0.3s ease;
  position: relative;
  overflow: hidden;
}

.progress-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

/* Button enhancements for safety */
button.btn-danger:hover:not(:disabled) {
  background-color: #c82333;
  box-shadow: 0 2px 8px rgba(220, 53, 69, 0.3);
  transform: translateY(-1px);
}

button.btn-primary:hover:not(:disabled) {
  box-shadow: 0 2px 8px rgba(0, 102, 204, 0.3);
  transform: translateY(-1px);
}

button.btn-secondary:hover:not(:disabled) {
  box-shadow: 0 2px 8px rgba(108, 117, 125, 0.3);
  transform: translateY(-1px);
}

button:active:not(:disabled) {
  transform: translateY(0);
}

/* Info message styles */
.status-message.info {
  background-color: #d1ecf1;
  color: #0c5460;
  border: 1px solid #bee5eb;
}

/* Enhanced visual feedback for disabled state */
button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  filter: grayscale(0.3);
}