:root {
  color-scheme: light dark;
  --bg: #f2f2ee;
  --panel: #ffffff;
  --panel-2: #f2f2ee;
  --panel-3: #e7e7df;
  --button-bg: #cfd7df;
  --button-hover-bg: #6d8fb3;
  --button-hover-ink: #ffffff;
  --line: rgba(16, 16, 16, 0.24);
  --line-strong: #111111;
  --ink: #111111;
  --muted: #555555;
  --accent: #111111;
  --accent-2: #111111;
  --shadow: none;
}

html[data-theme="light"] {
  color-scheme: light;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0b1118;
  --panel: #121b26;
  --panel-2: #0f1721;
  --panel-3: #0a121b;
  --button-bg: #223246;
  --button-hover-bg: #9eb8d8;
  --button-hover-ink: #0b1118;
  --line: rgba(138, 167, 204, 0.22);
  --line-strong: #9eb8d8;
  --ink: #e6eef8;
  --muted: #8ea2bc;
  --accent: #9eb8d8;
  --accent-2: #9eb8d8;
  --shadow: none;
}

@media (prefers-color-scheme: dark) {
  html:not([data-theme]) {
    color-scheme: dark;
    --bg: #0b1118;
    --panel: #121b26;
    --panel-2: #0f1721;
    --panel-3: #0a121b;
    --button-bg: #223246;
    --button-hover-bg: #9eb8d8;
    --button-hover-ink: #0b1118;
    --line: rgba(138, 167, 204, 0.22);
    --line-strong: #9eb8d8;
    --ink: #e6eef8;
    --muted: #8ea2bc;
    --accent: #9eb8d8;
    --accent-2: #9eb8d8;
    --shadow: none;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family:
    "Fira Code",
    "SFMono-Regular",
    Menlo,
    Monaco,
    Consolas,
    "Liberation Mono",
    monospace;
  color: var(--ink);
  background: var(--bg);
}

.app-shell {
  width: calc(100vw - 14px);
  margin: 7px auto;
}

.app-footer {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  padding: 0 6px 8px;
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.01em;
}

.footer-label {
  opacity: 0.82;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
}

#buildInfo {
  font-family: inherit;
}

.topbar,
.panel,
.section-body {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 2px 0 14px;
  border: 0;
  border-bottom: 3px solid var(--line-strong);
  background: transparent;
}

.title-block {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

h1,
h2 {
  margin: 0;
}

h1 {
  font-size: clamp(1.45rem, 2vw, 1.9rem);
  line-height: 1;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

h2 {
  font-size: 1.2rem;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.lede,
.hint,
.muted,
label,
.selection-meta {
  color: var(--muted);
}

.lede {
  margin: 0;
  font-size: 0.82rem;
  text-transform: uppercase;
}

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

.theme-cycle-btn {
  width: 42px;
  min-width: 42px;
  padding: 9px;
}

.theme-cycle-icon {
  display: inline-flex;
  width: 18px;
  height: 18px;
  align-items: center;
  justify-content: center;
}

.theme-cycle-icon svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
}

.file-pill {
  position: relative;
  overflow: hidden;
}

.file-pill input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

button,
.file-pill span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 9px 12px;
  border-radius: 0;
  border: 2px solid var(--line-strong);
  background: var(--button-bg);
  color: var(--ink);
  font: inherit;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 120ms ease, color 120ms ease;
}

button:hover,
.file-pill:hover span {
  background: var(--button-hover-bg);
  color: var(--button-hover-ink);
}

label {
  display: grid;
  gap: 6px;
  font-size: 0.9rem;
}

input[type="text"],
input[type="number"],
input[type="range"] {
  width: 100%;
}

input[type="checkbox"] {
  width: auto;
  accent-color: var(--accent);
}

input[type="text"],
input[type="number"],
textarea {
  padding: 9px 12px;
  border-radius: 0;
  border: 2px solid var(--line);
  background: var(--panel-2);
  color: var(--ink);
  font: inherit;
}

.workspace {
  display: grid;
  gap: 12px;
  margin-top: 12px;
}

@media (min-width: 980px) {
  .workspace {
    grid-template-columns: minmax(0, 1.1fr) minmax(360px, 430px);
    align-items: start;
  }
}

.control-column {
  display: grid;
  gap: 10px;
  align-content: start;
}

.preview-column {
  align-self: start;
}

@media (min-width: 980px) {
  .preview-column {
    position: sticky;
    top: 8px;
  }
}

.dock-section {
  margin: 0;
}

.dock-section summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 6px 4px 8px;
  list-style: none;
  cursor: pointer;
  user-select: none;
}

.dock-section summary::-webkit-details-marker {
  display: none;
}

.dock-section summary span:first-child {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink);
  text-transform: uppercase;
}

.dock-section[open] summary {
  padding-bottom: 8px;
}

.section-body,
.panel {
  border-radius: 0;
}

.section-body {
  padding: 12px;
  border: 2px solid var(--line-strong);
}

.editor-panel {
  padding: 0;
  border: 0;
  background: transparent;
}

.editor-tab-row {
  margin: 0 0 8px;
}

.compact-panel {
  padding: 14px;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: baseline;
}

.preview-surface {
  padding-top: 4px;
}

.editor-stage,
.preview-stage,
.sheet-preview {
  margin-top: 10px;
  border-radius: 0;
  border: 2px solid var(--line-strong);
  overflow: hidden;
  background:
    linear-gradient(rgba(0, 0, 0, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.04) 1px, transparent 1px),
    var(--panel-3);
  background-size: 20px 20px, 20px 20px, auto;
}

html[data-theme="dark"] .editor-stage,
html[data-theme="dark"] .preview-stage,
html[data-theme="dark"] .sheet-preview {
  background:
    linear-gradient(rgba(158, 184, 216, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(158, 184, 216, 0.08) 1px, transparent 1px),
    var(--panel-3);
  background-size: 20px 20px, 20px 20px, auto;
}

@media (prefers-color-scheme: dark) {
  html:not([data-theme]) .editor-stage,
  html:not([data-theme]) .preview-stage,
  html:not([data-theme]) .sheet-preview {
    background:
      linear-gradient(rgba(158, 184, 216, 0.08) 1px, transparent 1px),
      linear-gradient(90deg, rgba(158, 184, 216, 0.08) 1px, transparent 1px),
      var(--panel-3);
    background-size: 20px 20px, 20px 20px, auto;
  }
}

.editor-stage {
  padding: 8px;
  max-height: 46vh;
  overflow: auto;
}

.preview-stage,
.sheet-preview {
  padding: 12px;
}

.preview-stage {
  display: flex;
  justify-content: center;
  align-items: center;
}

#editorCanvas,
#previewCanvas,
#sheetCanvas {
  display: block;
  height: auto;
}

#editorCanvas,
#sheetCanvas {
  width: 100%;
}

#editorCanvas {
  image-rendering: auto;
}

#previewCanvas,
#sheetCanvas {
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

#previewCanvas {
  width: 100%;
  max-width: 100%;
}

.preview-tools {
  margin-top: 12px;
  padding: 12px;
}

.preview-controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.transport-row button {
  flex: 1 1 0;
}

.compact-grid {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}

@media (min-width: 560px) {
  .compact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.preview-grid {
  margin-top: 10px;
}

.tab-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 10px;
}

.tab-button {
  min-height: 36px;
  border-color: var(--line);
  background: var(--panel-2);
}

.tab-button.active {
  border-color: var(--line-strong);
  background: var(--line-strong);
  color: var(--panel);
}

html[data-theme="dark"] .tab-button.active {
  color: var(--bg);
}

@media (prefers-color-scheme: dark) {
  html:not([data-theme]) .tab-button.active {
    color: var(--bg);
  }
}

.tab-panel.hidden {
  display: none;
}

.json-editor-header {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 10px;
}

.json-editor-header span {
  margin-right: auto;
}

.json-editor-header button {
  min-height: 34px;
  padding: 6px 10px;
}

.json-editor {
  width: 100%;
  min-height: 46vh;
  margin-top: 8px;
  border: 2px solid var(--line);
  background: var(--panel-2);
  overflow: hidden;
}

.editor-json-panel {
  border: 2px solid var(--line-strong);
  background: var(--panel);
  padding: 12px;
}

.editor-json-panel .json-editor-header {
  margin-top: 0;
}

.json-status-error {
  color: #b42318;
}

html[data-theme="dark"] .json-status-error {
  color: #ffb4ab;
}

@media (prefers-color-scheme: dark) {
  html:not([data-theme]) .json-status-error {
    color: #ffb4ab;
  }
}

.selection-meta {
  display: grid;
  gap: 4px;
}

.compact-meta,
.selection-fields {
  margin-top: 8px;
}

.button-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.dense-row button {
  flex: 1 1 120px;
}

.opacity-field span {
  font-size: 0.84rem;
  color: var(--ink);
}

.toggle-field {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  border: 2px solid var(--line);
  border-radius: 0;
  background: var(--panel-2);
}

.hint {
  margin: 10px 0 0;
  font-size: 0.9rem;
  line-height: 1.4;
}

@media (max-width: 979px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .title-block {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }
}

@media (max-width: 720px) {
  .app-shell {
    width: calc(100vw - 8px);
    margin: 4px auto;
  }

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