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

body {
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  background: #09090b;
  color: #e4e4e7;
  height: 100vh;
  overflow: hidden;
}

.layout {
  display: grid;
  grid-template-columns: 420px 1fr;
  grid-template-rows: auto 1fr;
  height: 100vh;
}

.header {
  grid-column: 1 / -1;
  padding: 12px 20px;
  background: #0f0f12;
  border-bottom: 1px solid #27272a;
  display: flex;
  align-items: center;
  gap: 12px;
}

.header h1 {
  font-size: 15px;
  font-weight: 600;
  color: #fafafa;
  letter-spacing: -0.01em;
}

.header .sep {
  color: #3f3f46;
}

.header .subtitle {
  font-size: 13px;
  color: #71717a;
}

.sidebar {
  background: #0f0f12;
  border-right: 1px solid #27272a;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.controls {
  border-bottom: 1px solid #27272a;
}

.controls summary {
  padding: 10px 16px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #a1a1aa;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 6px;
  user-select: none;
}

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

.controls summary::before {
  content: "";
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 4px 0 4px 6px;
  border-color: transparent transparent transparent #52525b;
  transition: transform 0.15s;
  flex-shrink: 0;
}

.controls[open] summary::before {
  transform: rotate(90deg);
}

.controls summary:hover {
  color: #e4e4e7;
}

.controls-body {
  padding: 0 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.control-group > label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #a1a1aa;
}

.control-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

select {
  appearance: none;
  background: #18181b;
  border: 1px solid #27272a;
  border-radius: 6px;
  padding: 6px 28px 6px 10px;
  font-size: 13px;
  color: #e4e4e7;
  cursor: pointer;
  flex: 1;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2371717a' viewBox='0 0 16 16'%3E%3Cpath d='M4.5 6l3.5 4 3.5-4z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
}

select:focus {
  outline: none;
  border-color: #3f3f46;
}

.checkbox-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: #d4d4d8;
  cursor: pointer;
  padding: 4px 0;
}

.checkbox-label input[type="checkbox"] {
  accent-color: #a78bfa;
  width: 14px;
  height: 14px;
  cursor: pointer;
}

.color-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.color-row.inactive .color-swatch {
  opacity: 0.35;
}

.color-swatch {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  border: 1px solid #3f3f46;
  padding: 0;
  cursor: pointer;
  background: none;
  flex-shrink: 0;
}

.color-swatch::-webkit-color-swatch-wrapper {
  padding: 0;
}

.color-swatch::-webkit-color-swatch {
  border: none;
  border-radius: 4px;
}

.color-swatch::-moz-color-swatch {
  border: none;
  border-radius: 4px;
}

.color-label {
  font-size: 13px;
  color: #d4d4d8;
  flex: 1;
}

.color-value {
  font-family: "SF Mono", "Cascadia Code", ui-monospace, monospace;
  font-size: 12px;
  color: #71717a;
  min-width: 60px;
}

.color-clear {
  width: 22px;
  height: 22px;
  border-radius: 4px;
  border: 1px solid #27272a;
  background: none;
  color: #52525b;
  font-size: 13px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.15s, color 0.15s;
  flex-shrink: 0;
}

.color-clear:hover {
  border-color: #f87171;
  color: #f87171;
}

.color-clear.hidden {
  visibility: hidden;
}

.color-hint {
  font-size: 11px;
  color: #52525b;
  line-height: 1.4;
}

.upload-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: #18181b;
  border: 1px dashed #3f3f46;
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 13px;
  color: #a1a1aa;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

.upload-btn:hover {
  border-color: #a78bfa;
  color: #e4e4e7;
}

.upload-btn svg {
  width: 14px;
  height: 14px;
}

.json-section {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.tab-bar {
  display: flex;
  border-bottom: 1px solid #27272a;
}

.tab-btn {
  flex: 1;
  padding: 8px 16px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #52525b;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.tab-btn:hover {
  color: #a1a1aa;
}

.tab-btn.active {
  color: #e4e4e7;
  border-bottom-color: #a78bfa;
}

.json-header {
  padding: 6px 16px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  border-bottom: 1px solid #27272a;
  min-height: 30px;
}

.json-error {
  font-size: 12px;
  color: #f87171;
  max-width: 280px;
  text-align: right;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.json-editor {
  flex: 1;
  resize: none;
  background: #09090b;
  border: none;
  padding: 12px 16px;
  font-family:
    "SF Mono", "Cascadia Code", "Fira Code", "JetBrains Mono", ui-monospace,
    monospace;
  font-size: 12.5px;
  line-height: 1.6;
  color: #d4d4d8;
  tab-size: 2;
  overflow: auto;
  display: block;
}

.json-editor:focus {
  outline: none;
}

.json-editor.hidden {
  display: none;
}

.preview-pane {
  background: #09090b;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px;
  overflow: auto;
}

.preview-container {
  width: 100%;
  max-width: 840px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.svg-wrapper {
  width: 100%;
  display: flex;
  justify-content: center;
  border-radius: 12px;
  overflow: hidden;
}

.svg-wrapper svg {
  display: block;
  width: 100%;
  height: auto;
}

.footer-bar {
  padding: 8px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid #27272a;
  background: #0f0f12;
  gap: 8px;
}

.footer-left {
  display: flex;
  gap: 6px;
}

.footer-btn {
  background: none;
  border: 1px solid #27272a;
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 12px;
  color: #a1a1aa;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

.footer-btn:hover {
  border-color: #a78bfa;
  color: #e4e4e7;
}

.footer-btn.danger:hover {
  border-color: #f87171;
  color: #f87171;
}

.status-indicator {
  font-size: 12px;
  color: #52525b;
  display: flex;
  align-items: center;
  gap: 6px;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #52525b;
  transition: background 0.2s;
}

.status-dot.ok {
  background: #4ade80;
}

.status-dot.loading {
  background: #facc15;
}

.status-dot.error {
  background: #f87171;
}

.hidden-input {
  display: none;
}