:root {
  --bg: #111;
  --bg-bar: #1a1a1a;
  --bg-raised: #161616;
  --bg-hover: #1b1b1b;
  --bg-hover2: #222;
  --bg-sunken: #141414;
  --bg-accent: #141e14;
  --bg-active: #1e2e1e;
  --bg-deep: #0f0f0f;
  --bg-input: #0a0a0a;
  --bg-canvas: #000;
  --bg-xhover: #1e1010;
  --bg-overlay: rgba(0,0,0,.6);
  --bd: #2a2a2a;
  --bd-inner: #1e1e1e;
  --bd-deep: #1c1c1c;
  --bd-card: #222;
  --bd-btn: #2d2d2d;
  --bd-type: #252525;
  --bd-active: #2b3d2b;
  --bd-hover: #444;
  --bd-strong: #333;
  --tx: #ccc;
  --tx-hover: #bbb;
  --tx-sub: #888;
  --tx-label: #777;
  --tx-meta: #666;
  --tx-dim: #555;
  --tx-faint: #444;
  --tx-ghost: #333;
  --tx-file: #3a3a3a;
  --tx-empty: #2e2e2e;
  --ac: #33ff66;
  --dirty: #886622
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #f5f5f5;
    --bg-bar: #e8e8e8;
    --bg-raised: #efefef;
    --bg-hover: #e5e5e5;
    --bg-hover2: #e0e0e0;
    --bg-sunken: #ebebeb;
    --bg-accent: #e8f5e8;
    --bg-active: #dff0df;
    --bg-deep: #f0f0f0;
    --bg-input: #fff;
    --bg-canvas: #fff;
    --bg-xhover: #ffe8e8;
    --bg-overlay: rgba(0,0,0,.4);
    --bd: #d0d0d0;
    --bd-inner: #ddd;
    --bd-deep: #e0e0e0;
    --bd-card: #ddd;
    --bd-btn: #ccc;
    --bd-type: #d8d8d8;
    --bd-active: #7dc87d;
    --bd-hover: #bbb;
    --bd-strong: #ccc;
    --tx: #222;
    --tx-hover: #333;
    --tx-sub: #555;
    --tx-label: #666;
    --tx-meta: #777;
    --tx-dim: #888;
    --tx-faint: #999;
    --tx-ghost: #aaa;
    --tx-file: #aaa;
    --tx-empty: #bbb;
    --ac: #1a9940;
    --dirty: #b37a00
  }
}

[data-theme="light"] {
  --bg: #f5f5f5;
  --bg-bar: #e8e8e8;
  --bg-raised: #efefef;
  --bg-hover: #e5e5e5;
  --bg-hover2: #e0e0e0;
  --bg-sunken: #ebebeb;
  --bg-accent: #e8f5e8;
  --bg-active: #dff0df;
  --bg-deep: #f0f0f0;
  --bg-input: #fff;
  --bg-canvas: #fff;
  --bg-xhover: #ffe8e8;
  --bg-overlay: rgba(0,0,0,.4);
  --bd: #d0d0d0;
  --bd-inner: #ddd;
  --bd-deep: #e0e0e0;
  --bd-card: #ddd;
  --bd-btn: #ccc;
  --bd-type: #d8d8d8;
  --bd-active: #7dc87d;
  --bd-hover: #bbb;
  --bd-strong: #ccc;
  --tx: #222;
  --tx-hover: #333;
  --tx-sub: #555;
  --tx-label: #666;
  --tx-meta: #777;
  --tx-dim: #888;
  --tx-faint: #999;
  --tx-ghost: #aaa;
  --tx-file: #aaa;
  --tx-empty: #bbb;
  --ac: #1a9940;
  --dirty: #b37a00
}

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

body {
  background: var(--bg);
  color: var(--tx);
  font-family: monospace;
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  font-size: 12px
}

#topbar {
  height: 36px;
  background: var(--bg-bar);
  border-bottom: 1px solid var(--bd);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px;
  flex-shrink: 0
}

#topbar .app-name {
  color: var(--tx-dim);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-right: 4px
}

.tb-btn {
  background: var(--bg-raised);
  color: var(--tx-sub);
  border: 1px solid var(--bd-btn);
  border-radius: 3px;
  padding: 3px 10px;
  font-family: monospace;
  font-size: 11px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 5px;
  white-space: nowrap
}

.tb-btn:hover {
  background: var(--bg-hover2);
  color: var(--tx-hover);
  border-color: var(--bd-hover)
}

.tb-btn svg {
  width: 13px;
  height: 13px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0
}

#file-input {
  display: none
}

#filename {
  color: var(--tx-file);
  font-size: 11px;
  margin-left: 2px;
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap
}

.tb-sep {
  width: 1px;
  height: 18px;
  background: var(--bd)
}

.dirty {
  color: var(--dirty) !important
}

#main {
  flex: 1;
  display: flex;
  min-height: 0
}

#left {
  width: 48%;
  border-right: 1px solid var(--bd-inner);
  display: flex;
  flex-direction: column;
  padding: 14px;
  gap: 10px;
  overflow-y: auto;
  flex-shrink: 0
}

#display-box {
  width: 100%;
  aspect-ratio: 2/1;
  background: var(--bg-canvas);
  border: 1px solid var(--bd);
  border-radius: 3px;
  overflow: hidden
}

#canvas_root {
  width: 100%;
  height: 100%;
  display: block;
  image-rendering: pixelated;
  image-rendering: crisp-edges
}

.pv-label {
  font-size: 10px;
  color: var(--tx-ghost);
  letter-spacing: .1em;
  text-transform: uppercase
}

#demo-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 6px
}
#demo-btns > div {
  display: contents;
}

canvas.pixel-editor {
  display: block;
  cursor: crosshair;
  image-rendering: pixelated;
  max-width: 100%;
  border: 1px solid var(--bd-inner);
}
.anim-editor {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.anim-frame-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 3px;
  align-items: center;
}
.anim-frame-tab {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 2px 6px;
  border: 1px solid var(--bd-inner);
  border-radius: 3px;
  cursor: pointer;
  font-size: 11px;
  user-select: none;
}
.anim-frame-tab.active {
  border-color: var(--accent, #EC0);
  color: var(--accent, #EC0);
}
.x-btn-sm {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  padding: 0 2px;
  font-size: 13px;
  line-height: 1;
  opacity: 0.6;
}
.x-btn-sm:hover { opacity: 1; }

#sec-meta {
  background: var(--bg-sunken);
  border: 1px solid var(--bd-inner);
  border-radius: 3px;
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  gap: 6px
}

.meta-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px
}

.meta-row label {
  color: var(--tx-faint);
  min-width: 90px
}

.meta-val {
  color: var(--tx-meta)
}

.green {
  color: var(--ac)
}

.flag-check {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  color: var(--tx-dim);
  cursor: pointer
}

.flag-check input {
  accent-color: var(--ac);
  cursor: pointer
}

#right {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden
}

#right-hdr {
  height: 36px;
  background: var(--bg-sunken);
  border-bottom: 1px solid var(--bd-inner);
  display: flex;
  align-items: center;
  padding: 0 10px;
  gap: 6px;
  flex-shrink: 0
}

#right-hdr .rh-title {
  flex: 1;
  color: var(--tx-faint);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase
}

#sections-wrap {
  flex: 1;
  overflow-y: auto;
  padding: 8px
}

.empty-state {
  color: var(--tx-empty);
  font-size: 11px;
  padding: 28px 16px;
  text-align: center;
  line-height: 2
}

/* section card */
.sec-card {
  border: 1px solid var(--bd-card);
  border-radius: 3px;
  margin-bottom: 5px;
  overflow: hidden
}

.sec-card.active {
  border-color: var(--bd-active)
}

.sec-hdr {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 6px 8px;
  cursor: pointer;
  user-select: none;
  background: var(--bg-raised);
  position: relative
}

.sec-hdr:hover {
  background: var(--bg-hover)
}

.sec-card.active .sec-hdr {
  background: var(--bg-active)
}

.sec-arrow {
  color: var(--tx-ghost);
  font-size: 13px;
  line-height: 1;
  transition: transform .12s;
  flex-shrink: 0
}

.sec-card.open .sec-arrow {
  transform: rotate(90deg)
}

.sec-label {
  flex: 1;
  color: var(--tx-label);
  font-size: 11px
}

.sec-badge {
  font-size: 10px;
  color: var(--ac);
  border: 1px solid var(--bd-active);
  background: var(--bg-accent);
  border-radius: 2px;
  padding: 1px 6px;
  flex-shrink: 0
}

/* red ×  - section & element */
.x-btn {
  background: none;
  border: none;
  color: var(--bd);
  cursor: pointer;
  font-size: 15px;
  line-height: 1;
  padding: 2px 5px;
  border-radius: 2px;
  flex-shrink: 0;
  transition: color .1s, background .1s
}

.x-btn:hover {
  color: #ff4444;
  background: var(--bg-xhover)
}

/* element */
.el-list {
  background: var(--bg-deep);
  border-top: 1px solid var(--bd-deep);
  padding: 6px
}

.el-item {
  border: 1px solid var(--bd-inner);
  border-radius: 3px;
  background: var(--bg-sunken);
  margin-bottom: 4px;
  overflow: hidden
}

.el-item.active {
  border-color: var(--ac)
}

.el-item-hdr {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 8px;
  cursor: pointer
}

.el-item-hdr:hover {
  background: var(--bg-hover)
}

.el-type {
  font-size: 10px;
  color: var(--tx-meta);
  border: 1px solid var(--bd-type);
  border-radius: 2px;
  padding: 1px 6px;
  flex-shrink: 0
}

.el-item.active .el-type {
  color: var(--ac);
  border-color: var(--bd-active)
}

.el-name {
  flex: 1;
  color: var(--tx-dim);
  font-size: 11px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 120px
}

.el-fields {
  padding: 6px 8px 8px;
  border-top: 1px solid var(--bg-bar);
  display: flex;
  flex-direction: column;
  gap: 5px
}

.fields-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 10px
}

.field {
  display: flex;
  flex-direction: column;
  gap: 2px
}

.field.full {
  grid-column: 1/-1
}

.field>label {
  font-size: 10px;
  color: var(--tx-faint)
}

.field input[type=text],
.field input[type=number],
.field select,
.field textarea {
  background: var(--bg-input);
  color: var(--tx-sub);
  border: 1px solid var(--bd-card);
  border-radius: 2px;
  padding: 3px 6px;
  font-family: monospace;
  font-size: 11px;
  width: 100%;
  outline: none
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--ac);
  color: var(--tx)
}

.field textarea {
  resize: vertical;
  min-height: 44px;
  line-height: 1.4
}

.field select option {
  background: var(--bg-bar);
  color: var(--tx-ghost)
}

.flags-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 2px 0
}

.add-el {
  background: transparent;
  color: var(--tx-ghost);
  border: 1px dashed var(--bd-card);
  border-radius: 3px;
  padding: 5px 8px;
  font-family: monospace;
  font-size: 11px;
  cursor: pointer;
  width: 100%;
  text-align: center;
  margin-top: 2px
}

.add-el:hover {
  color: var(--tx-sub);
  border-color: var(--bd-hover)
}

/* confirm dialog */
#confirm-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--bg-overlay);
  z-index: 100;
  align-items: center;
  justify-content: center
}

#confirm-overlay.show {
  display: flex
}

#confirm-box {
  background: var(--bg-bar);
  border: 1px solid var(--bd-strong);
  border-radius: 4px;
  padding: 20px 24px;
  max-width: 340px;
  width: 90%;
  display: flex;
  flex-direction: column;
  gap: 14px
}

#confirm-msg {
  color: var(--tx-ghost);
  font-size: 12px;
  line-height: 1.6
}

#confirm-btns {
  display: flex;
  gap: 8px;
  justify-content: flex-end
}

.cb {
  background: var(--bg-raised);
  color: var(--tx-sub);
  border: 1px solid var(--bd-btn);
  border-radius: 3px;
  padding: 4px 14px;
  font-family: monospace;
  font-size: 11px;
  cursor: pointer
}

.cb:hover {
  background: var(--bg-hover2);
  color: var(--tx-hover)
}

.cb.primary {
  border-color: var(--bd-active);
  color: var(--ac)
}

.cb.primary:hover {
  background: var(--bg-active)
}