:root {
  --font-scale: 1;
  --app-bg: #131419;
  --app-panel: #1a1d29;
  --app-panel-alt: #161d31;
  --app-surface: #121829;
  --app-border: #33415f;
  --app-text: #eff2ff;
  --app-text-soft: #aebce0;
  --app-accent: #5f7cc4;
  --app-accent-strong: #7b97dd;
  --app-danger: #5a2631;
  --app-danger-border: #8e4452;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100dvh;
}

body {
  margin: 0;
  font-family: Inter, system-ui, sans-serif;
  font-size: calc(1rem * var(--font-scale));
  background: var(--app-bg);
  color: var(--app-text);
  overflow: hidden;
}

button,
input,
textarea,
select {
  font: inherit;
}

fieldset {
  border: 1px solid var(--app-border);
  border-radius: 8px;
  margin: 0;
  padding: 0.75rem;
}

legend {
  padding: 0 0.25rem;
}

.layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  width: 100%;
  height: 100%;
  transition: grid-template-columns 0.2s ease;
  overflow: hidden;
}

.layout.sidebar-collapsed {
  grid-template-columns: 52px 1fr;
}

.sidebar {
  border-right: 1px solid var(--app-border);
  background: var(--app-panel);
  display: flex;
  flex-direction: column;
  gap: 0;
  min-width: 0;
  overflow: hidden;
}

.sidebar-content {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  min-height: 0;
  overflow: auto;
  padding: 0.6rem;
}

.sidebar-content[hidden] {
  display: none !important;
}

.layout.sidebar-collapsed .sidebar-content {
  display: none;
}

.layout.sidebar-collapsed .sidebar .section-header h1 {
  display: none;
}

.layout.sidebar-collapsed .sidebar .section-header {
  justify-content: center;
  padding: 0.4rem 0.2rem;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.6rem;
}

.section-header h1,
.section-header h2,
.preview-pane h2 {
  margin: 0;
  font-size: 1rem;
}

.tree-tools,
.mode-tabs,
.overlay-actions,
.admin-actions,
.asset-actions,
.project-actions,
.toolbar-popover,
.editor-toolbar,
.editor-toolbar-actions {
  display: flex;
  gap: 0.45rem;
  align-items: center;
}

.tree-tools,
.project-actions,
.editor-toolbar,
.editor-toolbar-actions,
.toolbar-popover {
  flex-wrap: wrap;
}

button,
.upload-button {
  border: 1px solid var(--app-border);
  background: color-mix(in srgb, var(--app-accent) 45%, var(--app-panel) 55%);
  color: var(--app-text);
  border-radius: 6px;
  padding: 0.3rem 0.55rem;
  cursor: pointer;
  text-decoration: none;
  font-size: 0.8rem;
  line-height: 1.1;
}

button:hover,
.upload-button:hover {
  background: color-mix(in srgb, var(--app-accent-strong) 55%, var(--app-panel) 45%);
}

button:disabled,
input:disabled,
textarea:disabled,
select:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

button.danger {
  background: var(--app-danger);
  border-color: var(--app-danger-border);
}

.workspace {
  display: flex;
  flex-direction: column;
  gap: 0;
  min-height: 0;
  height: 100%;
  min-width: 0;
  overflow: hidden;
}

.topbar {
  display: grid;
  grid-template-columns: minmax(200px, 1fr) repeat(9, minmax(32px, auto));
  align-items: stretch;
  gap: 0;
  padding: 0;
  border-bottom: 1px solid var(--app-border);
  background: var(--app-panel-alt);
  min-height: 36px;
}

.topbar-select {
  border-radius: 0;
  min-height: 100%;
}

.topbar > button,
.topbar > details > summary {
  border-radius: 0;
  min-height: 100%;
}

.hidden-toolbar-fields {
  display: none;
}

.stack-field {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 150px;
}

.stack-field span,
.form-hint,
.muted {
  font-size: 0.72rem;
  color: var(--app-text-soft);
}

.toolbar-field.compact {
  min-width: min(340px, 42vw);
}

.toolbar-field.grow {
  flex: 1;
}

.toolbar-select,
.project-title,
.overlay-body input,
.overlay-body textarea,
.overlay-body select {
  width: 100%;
  border: 1px solid var(--app-border);
  border-radius: 6px;
  background: var(--app-surface);
  color: var(--app-text);
  padding: 0.35rem 0.5rem;
  min-height: 32px;
}

.current-user {
  padding: 0.3rem 0.55rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--app-accent) 25%, var(--app-panel-alt) 75%);
  border: 1px solid var(--app-border);
  font-size: 0.78rem;
  list-style: none;
}

.current-user::-webkit-details-marker,
.toolbar-menu summary::-webkit-details-marker {
  display: none;
}

.doc-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0;
  border-bottom: 1px solid var(--app-border);
  min-height: 32px;
  overflow: auto;
}

.editor-toolbar {
  padding: 0;
  border-bottom: 1px solid var(--app-border);
  background: color-mix(in srgb, var(--app-panel-alt) 75%, var(--app-panel) 25%);
  overflow: visible;
  position: relative;
  z-index: 10;
}

.editor-toolbar .toolbar-menu {
  position: relative;
}

.toolbar-menu {
  position: relative;
}

.toolbar-menu[open] {
  z-index: 40;
}

.toolbar-menu summary {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  list-style: none;
  cursor: pointer;
  user-select: none;
  border: 1px solid var(--app-border);
  background: color-mix(in srgb, var(--app-accent) 35%, var(--app-panel) 65%);
  color: var(--app-text);
  border-radius: 6px;
  padding: 0.3rem 0.55rem;
  font-size: 0.8rem;
}

.toolbar-menu[open] summary {
  background: color-mix(in srgb, var(--app-accent-strong) 55%, var(--app-panel) 45%);
}

.toolbar-popover {
  position: absolute;
  top: calc(100% + 0.35rem);
  right: 0;
  min-width: 220px;
  padding: 0.5rem;
  border: 1px solid var(--app-border);
  border-radius: 8px;
  background: var(--app-panel-alt);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.35);
  z-index: 20;
}

.toolbar-menu:not([open]) > .toolbar-popover {
  display: none;
}

.editor-toolbar .toolbar-popover {
  left: 0;
  right: auto;
  min-width: 240px;
  display: grid;
  gap: 0.3rem;
}

.editor-toolbar .toolbar-popover button,
.user-popover button {
  width: 100%;
  justify-content: flex-start;
}

.project-popover {
  width: min(320px, 90vw);
}

.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  min-height: 32px;
  padding: 0.2rem;
  font-weight: 700;
  border: none;
  background: transparent;
}

.icon-button:hover {
  background: color-mix(in srgb, var(--app-accent) 30%, transparent 70%);
}

.menu-hint {
  color: var(--app-text-soft);
  font-size: 0.72rem;
  padding: 0.1rem 0.2rem 0.35rem;
}

.doc-tab {
  border: 1px solid var(--app-border);
  background: color-mix(in srgb, var(--app-accent) 12%, var(--app-panel) 88%);
  border-radius: 6px;
  padding: 0.25rem 0.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.doc-tab.active,
.overlay-tab.active {
  background: var(--app-accent);
}

.doc-tab button {
  padding: 0;
  border: none;
  background: transparent;
  line-height: 1;
}

.editor-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr);
  gap: 0;
  align-items: stretch;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.editor-column {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
  min-height: 0;
  height: 100%;
  overflow: hidden;
}

.editor-column h2 {
  margin: 0;
  font-size: 0.85rem;
  padding: 0.2rem 0.35rem;
  border-bottom: 1px solid var(--app-border);
  background: color-mix(in srgb, var(--app-panel-alt) 70%, var(--app-panel) 30%);
}

.editor-pane,
.compile-output {
  width: 100%;
  border: 1px solid var(--app-border);
  background: var(--app-surface);
  color: var(--app-text);
  padding: 0;
}

.editor-pane {
  flex: 1 1 auto;
  min-height: 0;
  height: auto;
  resize: none;
  overflow-x: auto;
  overflow-y: auto;
}

#code-editor {
  font-family: 'SFMono-Regular', Consolas, monospace;
  border-width: 0 1px 0 0;
  padding-left: 5px;
}

#visual-editor {
  border-width: 0;
  padding: 0.75rem;
}

#visual-editor.source-preview {
  column-count: 1;
  column-gap: 0;
}

.editor-column:first-child #code-editor {
  border-right-width: 1px;
}

.compile-output {
  min-height: 0;
  white-space: pre-wrap;
  overflow: auto;
}

.css-panel,
.compile-panel,
.assets-panel {
  background: var(--app-panel-alt);
  border: 1px solid var(--app-border);
  border-radius: 0;
  padding: 0;
}

.file-tree,
.asset-list,
.admin-list,
.help-sections {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.file-tree ul {
  margin: 0.2rem 0 0.2rem 0.9rem;
  padding: 0;
  list-style: none;
}

.tree-node {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem;
  border-radius: 4px;
  cursor: pointer;
}

.tree-node.selected {
  background: color-mix(in srgb, var(--app-accent) 35%, var(--app-panel) 65%);
}

.tree-node .name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.asset-item,
.admin-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.35rem 0.5rem;
  align-items: center;
  padding: 0.45rem 0.6rem;
  border-bottom: 1px solid color-mix(in srgb, var(--app-border) 75%, transparent 25%);
}

.compile-panel {
  min-height: 0;
  max-height: none;
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-top: 0;
}

.status-bar {
  text-align: right;
  color: var(--app-text-soft);
  margin-top: auto;
  padding: 0.15rem 0.35rem;
  border-top: 1px solid var(--app-border);
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(7, 10, 16, 0.78);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 999;
}

.overlay-card {
  width: min(980px, 96vw);
  max-height: 92vh;
  background: var(--app-panel-alt);
  border: 1px solid var(--app-border);
  border-radius: 10px;
  display: flex;
  flex-direction: column;
}

.overlay-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  border-bottom: 1px solid var(--app-border);
  padding: 0.75rem 0.9rem;
}

.overlay-header h2 {
  margin: 0;
  font-size: 1rem;
}

#overlay-close-btn {
  padding: 0.15rem 0.5rem;
}

.overlay-body {
  padding: 0.9rem;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.overlay-body form,
.overlay-block {
  background: color-mix(in srgb, var(--app-panel) 70%, var(--app-surface) 30%);
  border: 1px solid var(--app-border);
  border-radius: 8px;
  padding: 0.8rem;
}

.overlay-body label {
  display: block;
  margin: 0 0 0.35rem;
  font-size: 0.9rem;
}

.overlay-body textarea {
  resize: vertical;
}

.asset-preview-frame {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 240px;
  max-height: min(60vh, 520px);
  overflow: auto;
  border: 1px solid var(--app-border);
  border-radius: 8px;
  background: color-mix(in srgb, var(--app-surface) 80%, black 20%);
  padding: 0.75rem;
}

.asset-preview-image {
  display: block;
  max-width: 100%;
  max-height: min(56vh, 480px);
  object-fit: contain;
}

.asset-preview-meta {
  display: grid;
  gap: 0.35rem;
}

.asset-preview-url {
  margin: 0;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--app-border);
  border-radius: 6px;
  background: var(--app-surface);
  overflow: auto;
}

.profile-games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.35rem 0.75rem;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.checkbox-row input {
  width: auto;
}

.overlay-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.overlay-tab {
  border: 1px solid var(--app-border);
  background: color-mix(in srgb, var(--app-accent) 20%, var(--app-panel) 80%);
}

.overlay-panel {
  display: none;
}

.overlay-panel.active {
  display: block;
}

.public-profile p,
.overlay-help p,
.overlay-help li {
  line-height: 1.45;
}

.empty-state {
  color: var(--app-text-soft);
}

.hidden {
  display: none !important;
}

.workspace-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--app-border);
  min-height: 32px;
}

.workspace-tab {
  border-radius: 0;
  border: 0;
  border-right: 1px solid var(--app-border);
  background: color-mix(in srgb, var(--app-accent) 28%, var(--app-panel) 72%);
}

.workspace-tab.active {
  background: var(--app-accent);
}

.workspace-panels {
  position: relative;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.workspace-panel {
  display: none;
  flex-direction: column;
  min-height: 0;
  height: 100%;
}

.workspace-panel.active {
  display: flex;
}

.asset-root,
.asset-node {
  cursor: pointer;
}

.asset-inline-btn {
  min-width: 22px;
  padding: 0.1rem 0.3rem;
  line-height: 1;
}

.asset-node .name {
  flex: initial;
}

.tree-node.drag-over-before {
  border-top: 2px solid var(--app-accent);
}

.tree-node.drag-over-after {
  border-bottom: 2px solid var(--app-accent);
}

.tree-node.drag-over-inside {
  background: color-mix(in srgb, var(--app-accent) 30%, var(--app-panel) 70%);
}

@media (max-width: 1200px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    display: none;
  }

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

  .topbar {
    flex-wrap: wrap;
  }
}