:root {
  --bg: #eef1f2;
  --panel: #ffffff;
  --panel-muted: #f6f7f7;
  --line: #d7dcde;
  --line-strong: #b9c1c4;
  --text: #1f292c;
  --muted: #637074;
  --accent: #087f79;
  --accent-dark: #05635f;
  --accent-soft: #d9efed;
  --warn: #b55a24;
  --radius: 6px;
  font-family: "Liberation Sans", Arial, sans-serif;
}

* {
  box-sizing: border-box;
  letter-spacing: 0;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  color: var(--text);
  background: var(--bg);
}

button,
input,
select {
  font: inherit;
}

button,
label,
select,
input[type="range"],
input[type="checkbox"],
input[type="color"] {
  cursor: pointer;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.topbar {
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

.brand-block,
.topbar-actions,
.panel-heading,
.canvas-toolbar,
.zoom-controls,
.statusbar,
.checkbox-row,
.export-actions {
  display: flex;
  align-items: center;
}

.brand-block {
  gap: 10px;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 4px;
  color: #fff;
  background: var(--accent);
  font-size: 13px;
  font-weight: 700;
}

.brand-block h1,
.brand-block p,
.panel-heading h2 {
  margin: 0;
}

.brand-block h1 {
  font-size: 16px;
  line-height: 1.15;
}

.brand-block p,
.panel-heading span,
.figure-identity span,
.statusbar,
.selected-editor span {
  color: var(--muted);
  font-size: 12px;
}

.topbar-actions {
  gap: 7px;
}

.readonly-badge {
  padding: 4px 8px;
  border: 1px solid #9ccac6;
  border-radius: 999px;
  color: var(--accent-dark);
  background: var(--accent-soft);
  font-size: 12px;
}

.workspace {
  height: calc(100dvh - 58px);
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr) 304px;
  min-width: 0;
}

.library-panel,
.controls-panel,
.canvas-panel {
  min-width: 0;
  min-height: 0;
}

.library-panel,
.controls-panel {
  background: var(--panel);
  overflow-y: auto;
}

.library-panel {
  border-right: 1px solid var(--line);
}

.controls-panel {
  border-left: 1px solid var(--line);
}

.panel-heading {
  justify-content: space-between;
  padding: 14px 12px 10px;
}

.panel-heading h2 {
  font-size: 15px;
}

.library-filters {
  display: grid;
  grid-template-columns: 1fr;
  gap: 7px;
  padding: 0 12px 10px;
}

input[type="search"],
input[type="text"],
input[type="number"],
select {
  width: 100%;
  height: 31px;
  padding: 0 8px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  color: var(--text);
  background: #fff;
}

.gallery {
  display: grid;
  gap: 7px;
  padding: 0 8px 14px;
}

.gallery-item {
  width: 100%;
  padding: 7px;
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 9px;
  align-items: center;
  border: 1px solid transparent;
  border-radius: var(--radius);
  text-align: left;
  color: inherit;
  background: transparent;
}

.gallery-item:hover {
  border-color: var(--line);
  background: var(--panel-muted);
}

.gallery-item.active {
  border-color: #78b9b4;
  background: var(--accent-soft);
}

.gallery-thumb {
  width: 72px;
  height: 48px;
  padding: 3px;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #fff;
}

.gallery-copy {
  min-width: 0;
}

.gallery-copy strong,
.gallery-copy span {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.gallery-copy strong {
  font-size: 12px;
  line-height: 1.3;
}

.gallery-copy span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 11px;
}

.canvas-panel {
  display: grid;
  grid-template-rows: 48px minmax(0, 1fr) 30px;
  background: var(--bg);
}

.canvas-toolbar {
  justify-content: space-between;
  gap: 12px;
  padding: 0 12px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

.figure-identity {
  min-width: 0;
}

.figure-identity strong,
.figure-identity span {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.figure-identity strong {
  font-size: 13px;
}

.zoom-controls {
  flex: 0 0 auto;
  gap: 6px;
  color: var(--muted);
  font-size: 12px;
}

.zoom-controls select {
  width: 108px;
}

.canvas-scroll {
  min-height: 0;
  overflow: auto;
  padding: 18px;
}

.svg-stage {
  width: 100%;
  min-height: 100%;
  display: grid;
  place-items: center;
  transition: width 120ms ease;
}

.svg-stage svg {
  display: block;
  max-width: none;
  height: auto;
  background: #fff;
  box-shadow: 0 1px 8px rgb(18 39 44 / 12%);
}

.svg-stage.fit svg {
  width: 100%;
  max-height: calc(100dvh - 172px);
}

.svg-stage text {
  cursor: text;
}

.svg-stage text.editor-selected-text {
  paint-order: stroke;
  stroke: #00a79d;
  stroke-width: 1.3px;
  stroke-linejoin: round;
}

.empty-state {
  color: var(--muted);
  font-size: 13px;
}

.statusbar {
  justify-content: space-between;
  gap: 12px;
  padding: 0 12px;
  border-top: 1px solid var(--line);
  background: var(--panel);
}

.controls-panel details {
  border-bottom: 1px solid var(--line);
}

.controls-panel summary {
  padding: 11px 12px;
  list-style: none;
  font-size: 13px;
  font-weight: 700;
  user-select: none;
}

.controls-panel summary::-webkit-details-marker {
  display: none;
}

.controls-panel summary::after {
  content: "+";
  float: right;
  color: var(--muted);
}

.controls-panel details[open] summary::after {
  content: "−";
}

.control-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  padding: 0 12px 13px;
}

.control-grid label {
  min-width: 0;
  display: grid;
  gap: 5px;
  color: var(--muted);
  font-size: 11px;
}

.control-grid .full-row {
  grid-column: 1 / -1;
}

.range-control span {
  display: grid;
  grid-template-columns: 1fr 42px;
  gap: 8px;
  align-items: center;
}

.range-control output {
  color: var(--text);
  text-align: right;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

input[type="color"] {
  width: 100%;
  height: 31px;
  padding: 2px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: #fff;
}

.checkbox-row {
  min-height: 31px;
  grid-template-columns: auto 1fr !important;
  align-content: center;
  gap: 7px !important;
}

.checkbox-row input {
  margin: 0;
  accent-color: var(--accent);
}

.selected-editor {
  display: grid;
  gap: 8px;
  padding: 0 12px 13px;
}

.export-actions {
  gap: 8px;
  padding: 0 12px 14px;
}

.primary-button,
.secondary-button,
.upload-button,
.icon-button {
  min-height: 31px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
}

.primary-button,
.secondary-button,
.icon-button {
  padding: 0 10px;
}

.primary-button {
  color: #fff;
  border-color: var(--accent);
  background: var(--accent);
}

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

.secondary-button,
.icon-button,
.upload-button {
  color: var(--text);
  background: #fff;
}

.secondary-button:hover,
.icon-button:hover,
.upload-button:hover {
  background: var(--panel-muted);
}

.icon-button {
  width: 32px;
  padding: 0;
  font-size: 18px;
}

.upload-button {
  min-height: 28px;
  display: inline-flex;
  align-items: center;
  padding: 0 8px;
}

.export-actions button {
  flex: 1;
}

button:disabled,
input:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

@media (max-width: 1100px) {
  .workspace {
    grid-template-columns: 210px minmax(0, 1fr) 278px;
  }

  .gallery-item {
    grid-template-columns: 58px minmax(0, 1fr);
  }

  .gallery-thumb {
    width: 58px;
  }
}

@media (max-width: 820px) {
  html,
  body {
    overflow: auto;
  }

  .topbar {
    position: sticky;
    top: 0;
    z-index: 10;
  }

  .readonly-badge {
    display: none;
  }

  .workspace {
    height: auto;
    grid-template-columns: 1fr;
  }

  .library-panel,
  .controls-panel {
    border: 0;
  }

  .library-panel {
    border-bottom: 1px solid var(--line);
  }

  .gallery {
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    max-height: 230px;
    overflow-y: auto;
  }

  .canvas-panel {
    min-height: 620px;
  }

  .controls-panel {
    border-top: 1px solid var(--line);
  }
}