/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: var(--text-on-accent);
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
}

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

.btn-ghost {
  color: var(--text-secondary);
}

.btn-ghost:hover {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-sm);
}

.btn-icon svg {
  width: 20px;
  height: 20px;
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  min-width: 320px;
  max-width: 500px;
  width: 90%;
  box-shadow: var(--shadow-lg);
  transform: translateY(20px);
  transition: transform var(--transition-normal);
}

.modal-overlay.open .modal {
  transform: translateY(0);
}

.modal-title {
  font-size: 1.1rem;
  margin-bottom: 16px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 20px;
}

/* Input */
.input {
  width: 100%;
  padding: 8px 12px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.875rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.input:focus {
  border-color: var(--border-focus);
}

/* Select */
.select {
  padding: 6px 10px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.8rem;
  outline: none;
  cursor: pointer;
}

/* Slider / Range */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-runnable-track {
  height: 4px;
  background: var(--border-color);
  border-radius: 2px;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  background: var(--accent);
  border-radius: 50%;
  margin-top: -5px;
  transition: transform var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-size: 0.85rem;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 8px;
  animation: toast-in 300ms ease forwards;
  max-width: 360px;
}

.toast.error { border-left: 3px solid var(--accent); }
.toast.success { border-left: 3px solid #4ade80; }
.toast.info { border-left: 3px solid #60a5fa; }

.toast.removing {
  animation: toast-out 200ms ease forwards;
}

@keyframes toast-in {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes toast-out {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(40px); }
}

/* Spinner */
.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border-color);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Empty state */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  color: var(--text-muted);
  text-align: center;
  gap: 12px;
}

.empty-state svg {
  width: 64px;
  height: 64px;
  opacity: 0.4;
}

.empty-state p {
  font-size: 0.9rem;
}

/* Context menu */
.context-menu {
  position: fixed;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 4px;
  min-width: 160px;
  box-shadow: var(--shadow-lg);
  z-index: var(--z-modal);
}

.context-menu-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  width: 100%;
  text-align: left;
}

.context-menu-item:hover {
  background: var(--bg-surface-hover);
}

.context-menu-divider {
  height: 1px;
  background: var(--border-color);
  margin: 4px 0;
}

/* Progress bar */
.progress-bar {
  width: 100%;
  height: 4px;
  background: var(--border-color);
  border-radius: 2px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 200ms ease;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 600;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 9px;
  background: var(--accent);
  color: var(--text-on-accent);
}

/* Export form */
.export-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.export-field {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.export-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.export-roi {
  display: none;
  position: absolute;
  border: 2px solid var(--accent);
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.45);
  z-index: 20;
  pointer-events: none;
}

.export-roi.visible {
  display: block;
}

/* Make export modal backdrop more transparent so the ROI is visible */
#export-modal.open {
  background: rgba(0, 0, 0, 0.3);
}

.export-mode-toggle {
  display: flex;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.export-mode-btn {
  flex: 1;
  padding: 7px 12px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.export-mode-btn.active {
  background: var(--accent);
  color: var(--text-on-accent);
}

.export-mode-btn:not(.active):hover {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
}

.export-slider-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.export-slider-row input[type="range"] {
  flex: 1;
}

.export-slider-value {
  font-size: 0.8rem;
  color: var(--text-secondary);
  min-width: 52px;
  text-align: right;
}

.export-info-text {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Frame range controls */
.frame-range-section {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.frame-range-row {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
}

.frame-range-label {
  font-weight: 600;
  color: var(--text-secondary);
  min-width: 16px;
}

.frame-range-row input[type="number"] {
  width: 70px;
  padding: 4px 6px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.8rem;
  font-family: monospace;
}

.frame-range-row input[type="number"]:focus {
  border-color: var(--border-focus);
  outline: none;
}

.frame-range-sep {
  color: var(--text-muted);
}

.frame-range-info {
  color: var(--text-muted);
  font-size: 0.75rem;
  margin-left: auto;
  white-space: nowrap;
}

.frame-sync-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  cursor: pointer;
  vertical-align: middle;
  margin-left: 6px;
  transition: all var(--transition-fast);
}

.frame-sync-toggle.active {
  color: var(--accent);
  background: var(--accent-dim);
}