/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #1a1a1a;
  --color-bg-secondary: #252525;
  --color-bg-tertiary: #2d2d2d;
  --color-border: #3a3a3a;
  --color-text: #e0e0e0;
  --color-text-muted: #888;
  --color-primary: #4a9eff;
  --color-primary-hover: #6ab0ff;
  --color-error: #ff6b6b;
  --color-success: #4caf50;

  --toolbar-height: 48px;
  --panel-header-height: 40px;
}

html, body {
  height: 100%;
  height: 100dvh;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 14px;
  background-color: var(--color-bg);
  color: var(--color-text);
  overflow: hidden;
}

/* App Layout */
#app {
  display: grid;
  grid-template-rows: 1fr;
  height: 100%;
  height: 100dvh;
  overflow: hidden;
  position: relative;
}

/* Floating Toolbar */
.floating-toolbar {
  position: fixed;
  top: var(--toolbar-height);
  right: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 500;
}

.floating-toolbar .btn {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.floating-toolbar .btn-icon {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.floating-toolbar .btn-icon:hover {
  background-color: var(--color-bg-tertiary);
}

.floating-toolbar .btn-primary {
  padding: 10px 16px;
}

/* Buttons */
.btn {
  padding: 6px 12px;
  border: none;
  border-radius: 4px;
  font-size: 13px;
  cursor: pointer;
  transition: background-color 0.15s;
}

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

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

.btn-icon {
  background-color: transparent;
  color: var(--color-text-muted);
  padding: 6px 8px;
  font-size: 16px;
  line-height: 1;
}

.btn-icon:hover {
  background-color: var(--color-bg-tertiary);
  color: var(--color-text);
}

/* Toggle Button Group */
.btn-toggle {
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-muted);
}

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

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

.btn-group {
  display: flex;
  gap: 4px;
}

/* Settings Modal Rows */
.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
}

.settings-row label {
  font-size: 13px;
  color: var(--color-text-muted);
}

.settings-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.settings-actions .btn {
  flex: 1;
  min-width: 80px;
  background-color: var(--color-bg-tertiary);
  color: var(--color-text);
}

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

/* Select dropdown */
.select-theme {
  padding: 6px 12px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-size: 13px;
  cursor: pointer;
}

.select-theme:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* Main Content - Editor & Preview */
.main-content {
  display: grid;
  grid-template-columns: 1fr 4px 1fr;
  min-height: 0;
  overflow: hidden;
}

/* Vertical layout mode */
.main-content.vertical {
  grid-template-columns: 1fr;
  grid-template-rows: 1fr 4px 1fr;
}

.main-content.vertical .panel-editor {
  border-right: none;
  border-bottom: 1px solid var(--color-border);
}

.main-content.vertical .resize-handle {
  cursor: row-resize;
}

/* Swapped layout - preview first */
.main-content.swapped .panel-editor {
  order: 2;
  border-right: none;
  border-left: 1px solid var(--color-border);
}

.main-content.swapped .panel-preview {
  order: 0;
}

.main-content.swapped .resize-handle {
  order: 1;
}

.main-content.vertical.swapped .panel-editor {
  border-left: none;
  border-bottom: none;
  border-top: 1px solid var(--color-border);
}

/* Overlay layout mode */
.main-content.overlay {
  grid-template-columns: 1fr;
  grid-template-rows: 1fr;
  position: relative;
}

.main-content.overlay .panel-preview {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.main-content.overlay .panel-editor {
  position: absolute;
  inset: 0;
  z-index: 1;
  border: none;
  background-color: rgba(26, 26, 26, 0.85);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.main-content.overlay .panel-editor .panel-header {
  background-color: rgba(37, 37, 37, 0.9);
}

.main-content.overlay .resize-handle {
  display: none;
}

/* Resize Handle */
.resize-handle {
  background: var(--color-border);
  cursor: col-resize;
  transition: background-color 0.15s;
}

.resize-handle:hover,
.resize-handle.dragging {
  background: var(--color-primary);
}

/* Panels */
.panel {
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
  background-color: var(--color-bg);
}

.panel-editor {
  border-right: 1px solid var(--color-border);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--panel-header-height);
  padding: 0 12px;
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  font-size: 12px;
  color: var(--color-text-muted);
  flex-shrink: 0;
  gap: 8px;
}

.panel-body {
  flex: 1;
  min-height: 0;
  overflow: auto;
}

/* Editor */
#editor-container {
  height: 100%;
}

#editor-container .cm-editor {
  height: 100%;
}

/* Preview */
.panel-preview .panel-body {
  position: relative;
  background-color: #000;
  overflow: hidden;
}

#preview-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}


.panel-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-actions .btn-icon {
  padding: 2px 6px;
  font-size: 14px;
}

/* Fullscreen Preview */
.panel-preview.fullscreen {
  position: fixed;
  inset: 0;
  z-index: 1000;
}

.panel-preview.fullscreen .panel-header {
  position: absolute;
  top: 0;
  right: 0;
  left: auto;
  width: auto;
  background: rgba(0, 0, 0, 0.7);
  border: none;
  border-radius: 0 0 0 4px;
  padding: 8px 12px;
}

.panel-preview.fullscreen .panel-body {
  height: 100%;
}

/* Exit fullscreen button - hidden by default */
.btn-exit-fullscreen {
  display: none;
}

.panel-preview.fullscreen .btn-exit-fullscreen {
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.6);
  color: var(--color-text);
  font-size: 20px;
  cursor: pointer;
  transition: background-color 0.15s, transform 0.15s;
  z-index: 1001;
}

.panel-preview.fullscreen .btn-exit-fullscreen:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.1);
}

/* Error Overlay */
.error-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  max-height: 200px;
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-error);
  z-index: 100;
  display: flex;
  flex-direction: column;
  animation: slideUp 0.2s ease-out;
}

.error-overlay.hidden {
  display: none;
}

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

.error-overlay-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background-color: rgba(255, 107, 107, 0.15);
  border-bottom: 1px solid var(--color-border);
  font-size: 12px;
  color: var(--color-error);
  flex-shrink: 0;
}

.error-overlay-header .btn-icon {
  padding: 2px 6px;
  font-size: 12px;
  color: var(--color-text-muted);
}

.error-overlay-header .btn-icon:hover {
  color: var(--color-text);
}

.error-overlay-content {
  flex: 1;
  overflow: auto;
  padding: 12px;
  margin: 0;
  font-family: ui-monospace, 'SF Mono', Menlo, Monaco, monospace;
  font-size: 12px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--color-error);
}

/* Error indicator (minimized state) */
.error-indicator {
  position: absolute;
  bottom: 16px;
  right: 16px;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: none;
  border-radius: 20px;
  background-color: var(--color-error);
  color: white;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  z-index: 99;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  transition: transform 0.15s, box-shadow 0.15s;
  animation: fadeIn 0.2s ease-out;
}

.error-indicator:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.error-indicator-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.25);
  font-size: 12px;
  font-weight: bold;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal.hidden {
  display: none;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
}

.modal-content {
  position: relative;
  width: 90%;
  max-width: 400px;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  animation: modalIn 0.2s ease-out;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
}

.modal-header h2 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
}

.modal-body {
  padding: 20px;
}

.modal-section {
  margin-bottom: 24px;
}

.modal-section:last-child {
  margin-bottom: 0;
}

.modal-section h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 8px 0;
}

.modal-description {
  font-size: 13px;
  color: var(--color-text-muted);
  margin: 0 0 12px 0;
}

.modal-field {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.modal-field label {
  font-size: 13px;
  color: var(--color-text-muted);
  min-width: 80px;
}

.input-frames {
  width: 100px;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-size: 14px;
}

.input-frames:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* Hide number input spinners */
.input-frames::-webkit-outer-spin-button,
.input-frames::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.input-frames[type=number] {
  -moz-appearance: textfield;
}

.record-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.record-status {
  font-size: 14px;
  color: var(--color-error);
  font-weight: 500;
  font-family: ui-monospace, monospace;
}

.record-status.hidden {
  display: none;
}

/* Recording button state */
#btn-record.recording {
  background-color: var(--color-error);
}

#btn-record.recording:hover {
  background-color: #ff8585;
}

/* Utility classes */
.hidden {
  display: none !important;
}

/* Small modal variant */
.modal-content-sm {
  max-width: 320px;
}

/* Keyboard shortcuts */
.shortcut-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.shortcut-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 0;
}

.shortcut-keys {
  display: flex;
  align-items: center;
  gap: 4px;
}

.shortcut-desc {
  font-size: 13px;
  color: var(--color-text-muted);
}

kbd {
  display: inline-block;
  padding: 3px 6px;
  font-family: ui-monospace, monospace;
  font-size: 11px;
  color: var(--color-text);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  box-shadow: 0 1px 0 var(--color-border);
}

/* Texture Slots */
.texture-slots {
  display: flex;
  gap: 6px;
}

.texture-slot {
  width: 24px;
  height: 24px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background-color: var(--color-bg);
  background-size: cover;
  background-position: center;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.15s, transform 0.15s;
  padding: 0;
}

.texture-slot:hover {
  border-color: var(--color-primary);
  transform: scale(1.1);
}

.texture-slot.has-texture .texture-slot-label {
  display: none;
}

.texture-slot-label {
  font-size: 10px;
  color: var(--color-text-muted);
  font-weight: 600;
}

/* Texture Modal */
.texture-preview-container {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.texture-preview {
  width: 120px;
  height: 120px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background-color: var(--color-bg);
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.texture-preview-empty {
  font-size: 12px;
  color: var(--color-text-muted);
}

.texture-preview.has-texture .texture-preview-empty {
  display: none;
}

.texture-preview-info {
  font-size: 12px;
  color: var(--color-text-muted);
}

/* Texture Dropzone */
.texture-dropzone {
  border: 2px dashed var(--color-border);
  border-radius: 8px;
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background-color 0.15s;
}

.texture-dropzone:hover,
.texture-dropzone.dragover {
  border-color: var(--color-primary);
  background-color: rgba(74, 158, 255, 0.05);
}

.texture-dropzone p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 14px;
}

.texture-dropzone-hint {
  font-size: 12px !important;
  margin-top: 4px !important;
}

/* Texture Presets & Camera Controls */
.texture-presets,
.camera-controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.btn-preset {
  background-color: var(--color-bg-tertiary);
  color: var(--color-text);
  padding: 8px 16px;
}

.btn-preset:hover:not(:disabled) {
  background-color: var(--color-border);
}

.btn-preset:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* Danger Button */
.btn-danger {
  background-color: transparent;
  color: var(--color-error);
  border: 1px solid var(--color-error);
}

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

/* Pass Tabs */
.pass-tabs {
  display: flex;
  gap: 2px;
}

.pass-tab {
  padding: 4px 12px;
  border: none;
  border-radius: 4px;
  background-color: transparent;
  color: var(--color-text-muted);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.15s, color 0.15s;
}

.pass-tab:hover {
  background-color: var(--color-bg-tertiary);
  color: var(--color-text);
}

.pass-tab.active {
  background-color: var(--color-primary);
  color: white;
}

.pass-tab.has-error {
  color: var(--color-error);
}

.pass-tab.active.has-error {
  background-color: var(--color-error);
  color: white;
}

/* Add Buffer Button */
.btn-add-buffer {
  width: 24px;
  height: 24px;
  padding: 0;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text-muted);
  background-color: transparent;
  border: 1px dashed var(--color-border);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-add-buffer:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: rgba(74, 158, 255, 0.1);
}

.btn-add-buffer.hidden {
  display: none;
}

/* Large modal variant */
.modal-content-lg {
  max-width: 560px;
}

/* Sample Categories (Tabs) */
.sample-categories {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.sample-category-tab {
  padding: 8px 16px;
  border: none;
  border-radius: 4px;
  background-color: transparent;
  color: var(--color-text-muted);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.15s, color 0.15s;
}

.sample-category-tab:hover {
  background-color: var(--color-bg-tertiary);
  color: var(--color-text);
}

.sample-category-tab.active {
  background-color: var(--color-primary);
  color: white;
}

/* Sample Grid */
.sample-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  max-height: 400px;
  overflow-y: auto;
}

/* Sample Card */
.sample-card {
  position: relative;
  padding: 16px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background-color: var(--color-bg);
  cursor: pointer;
  transition: border-color 0.15s, background-color 0.15s, transform 0.15s;
}

.sample-card:hover {
  border-color: var(--color-primary);
  background-color: var(--color-bg-tertiary);
  transform: translateY(-2px);
}

.sample-card-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 4px 0;
}

.sample-card-description {
  font-size: 12px;
  color: var(--color-text-muted);
  margin: 0;
  line-height: 1.4;
}

/* Multi-pass badge */
.sample-card-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 2px 6px;
  border-radius: 4px;
  background-color: var(--color-primary);
  color: white;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
}

/* Confirm Dialog */
.confirm-message {
  font-size: 14px;
  color: var(--color-text-muted);
  margin: 0 0 20px 0;
  line-height: 1.5;
}

.confirm-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

.confirm-actions .btn {
  min-width: 100px;
}

.confirm-actions .btn:not(.btn-primary) {
  background-color: var(--color-bg-tertiary);
  color: var(--color-text);
}

.confirm-actions .btn:not(.btn-primary):hover {
  background-color: var(--color-border);
}