@import url('https://fonts.googleapis.com/css2?family=Google+Sans:ital,opsz,wght@0,17..18,400..700;1,17..18,400..700&display=swap');

html,
body {
  font-size: 0.875em;
  font-family: 'Google Sans', sans-serif;
}

/* ── Page header ── */
#page-header {
  display: flex;
  position: sticky;
  top: 0;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  z-index: 100;
  border-bottom: 1px solid light-dark(#d0d7de, #30363d);
  background: light-dark(#f6f8fa, #161b22);
  padding: 0 32px;
  height: 56px;
}

#page-header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: light-dark(#24292f, #e6edf3);
  text-decoration: none;
}

#page-header-brand svg {
  flex-shrink: 0;
  stroke: light-dark(#24292f, #e6edf3);
}

#github-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  border: 1px solid light-dark(#d0d7de, #30363d);
  border-radius: 6px;
  background: light-dark(#f6f8fa, #21262d);
  padding: 5px 12px;
  color: light-dark(#24292f, #e6edf3);
  font-weight: 500;
  font-size: 12px;
  font-family: inherit;
  text-decoration: none;
  white-space: nowrap;
}

#github-btn:hover {
  background: light-dark(#eaeef2, #30363d);
}

#github-btn svg {
  flex-shrink: 0;
  fill: light-dark(#24292f, #e6edf3);
}

#page-header-title {
  color: light-dark(#24292f, #e6edf3);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.01em;
}

#page-header-subtitle {
  margin-left: 2px;
  color: light-dark(#57606a, #8b949e);
  font-weight: 400;
  font-size: 12px;
}

#page-header-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

#example-select {
  cursor: pointer;
  border: 1px solid light-dark(#d0d7de, #30363d);
  border-radius: 6px;
  background: light-dark(#f6f8fa, #21262d);
  padding: 5px 10px;
  color: light-dark(#24292f, #e6edf3);
  font-size: 12px;
  font-family: inherit;
  height: 28px;
}

#example-select:hover {
  background: light-dark(#eaeef2, #30363d);
}

#theme-toggle-header {
  display: flex;
  align-items: center;
  gap: 2px;
  border: 1px solid light-dark(#d0d7de, #30363d);
  border-radius: 6px;
  background: light-dark(#eaeef2, #21262d);
  padding: 3px;
}

.theme-btn {
  transition:
    background 0.1s,
    color 0.1s;
  cursor: pointer;
  border: none;
  border-radius: 4px;
  background: transparent;
  padding: 3px 10px;
  color: light-dark(#57606a, #8b949e);
  font-size: 12px;
  font-family: inherit;
}

.theme-btn:hover {
  background: light-dark(#d0d7de, #30363d);
  color: light-dark(#24292f, #e6edf3);
}

.theme-btn.active {
  background: light-dark(#0969da, #388bfd);
  color: #fff;
}

/* ── Page body ── */
body {
  display: flex;
  flex-direction: column;
  margin: 0;
  min-height: 100vh;
}

#playground {
  display: flex;
  flex: 1;
  align-items: flex-start;
  gap: 12px;
  padding: 12px;
}

/* ── Sidebar ── */
#options-sidebar {
  position: sticky;
  top: 12px;
  flex-shrink: 0;
  border: 1px solid light-dark(#d0d7de, #444);
  border-radius: 5px;
  background: light-dark(#f6f8fa, #1c1c1c);
  padding-bottom: 60px;
  width: 320px;
  min-width: 280px;
  max-height: 100vh;
  overflow-y: auto;
}

.sidebar-heading {
  display: flex;
  position: sticky;
  top: 0;
  justify-content: space-between;
  align-items: center;
  z-index: 5;
  border-bottom: 1px solid light-dark(#d0d7de, #333);
  background: light-dark(#f6f8fa, #1c1c1c);
  padding: 10px 12px 4px;
  color: light-dark(#57606a, #8b949e);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.reset-btn {
  cursor: pointer;
  border: 1px solid light-dark(#d0d7de, #555);
  border-radius: 4px;
  background: none;
  padding: 2px 7px;
  color: light-dark(#57606a, #8b949e);
  font-weight: 600;
  font-size: 10px;
  font-family: inherit;
  letter-spacing: 0;
  text-transform: none;
  white-space: nowrap;
}

.reset-btn:hover {
  border-color: light-dark(#0969da, #58a6ff);
  color: light-dark(#0969da, #58a6ff);
}

/* Accordion groups */
.opt-group {
  border-bottom: 1px solid light-dark(#e8ecf0, #2d2d2d);
}

.opt-group > summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  padding: 7px 12px;
  color: light-dark(#24292f, #e6edf3);
  font-weight: 600;
  font-size: 12px;
  list-style: none;
  user-select: none;
}

.opt-group > summary::-webkit-details-marker {
  display: none;
}

.opt-group > summary::after {
  transition: transform 0.15s;
  content: '›';
  color: light-dark(#8c959f, #8b949e);
  font-size: 16px;
  line-height: 1;
}

.opt-group[open] > summary::after {
  transform: rotate(90deg);
}

.opt-group > summary:hover {
  background: light-dark(#eaeef2, #252525);
}

.opt-group-body {
  padding: 4px 8px 8px;
}

/* Individual option rows */
.opt-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 6px;
  border-radius: 3px;
  padding: 3px 4px;
}

.opt-row:hover {
  background: light-dark(rgba(0, 0, 0, 0.04), rgba(255, 255, 255, 0.04));
}

.opt-row.disabled {
  opacity: 0.38;
  pointer-events: none;
}

.opt-row.disabled .opt-label {
  font-style: italic;
}

.opt-label {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  color: light-dark(#1f2328, #e6edf3);
  font-size: 11px;
  font-family: 'Courier New', monospace;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.opt-input {
  flex-shrink: 0;
}

.opt-input input[type='text'],
.opt-input input[type='number'],
.opt-input select {
  border: 1px solid light-dark(#ccc, #555);
  border-radius: 4px;
  background: light-dark(#fff, #2d2d2d);
  padding: 2px 5px;
  width: 110px;
  color: light-dark(#24292f, #e6edf3);
  font-size: 11px;
}

.opt-input input[type='checkbox'] {
  cursor: pointer;
  width: 14px;
  height: 14px;
  accent-color: #0969da;
}

/* ── Main area ── */
#table-area {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}

#rebuild-indicator {
  position: fixed;
  right: 20px;
  bottom: 20px;
  opacity: 0;
  z-index: 9999;
  transition: opacity 0.4s;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.18);
  border-radius: 6px;
  background: light-dark(#1a7f37, #2ea043);
  padding: 6px 14px;
  pointer-events: none;
  color: #fff;
  font-weight: 600;
  font-size: 12px;
}

#rebuild-indicator.show {
  opacity: 1;
  transition: none;
}

#example-table-wrap {
  overflow: hidden;
}

/* ── Column options ── */
#col-options-section {
  border: 1px solid light-dark(#d0d7de, #444);
  border-radius: 6px;
  overflow: hidden;
}

#col-options-header {
  display: flex;
  align-items: center;
  gap: 0;
  border-bottom: 1px solid light-dark(#d0d7de, #444);
  background: light-dark(#f6f8fa, #1c1c1c);
  padding: 0 8px;
  overflow-x: auto;
  overflow-y: hidden;
}

#col-options-section.collapsed #col-options-header {
  border-bottom: none;
}

#col-options-section.collapsed #col-options-body {
  display: none;
}

#col-options-toggle {
  cursor: pointer;
  margin-left: auto;
  border: none;
  background: none;
  padding: 4px 6px;
  color: light-dark(#57606a, #8b949e);
  font-size: 11px;
  font-family: inherit;
  flex-shrink: 0;
}

#col-options-toggle:hover {
  color: light-dark(#24292f, #e6edf3);
}

#col-options-header-label {
  margin-right: 4px;
  border-right: 1px solid light-dark(#d0d7de, #444);
  padding: 6px 8px 6px 4px;
  color: light-dark(#57606a, #8b949e);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
}

.col-tab {
  cursor: pointer;
  margin-bottom: -1px;
  border: none;
  border-bottom: 2px solid transparent;
  background: none;
  padding: 6px 12px;
  color: light-dark(#57606a, #8b949e);
  font-size: 11px;
  font-family: inherit;
  white-space: nowrap;
}

.col-tab:hover {
  color: light-dark(#24292f, #e6edf3);
}

.col-tab.active {
  border-bottom-color: #0969da;
  color: #0969da;
  font-weight: 600;
}

#add-col-btn {
  cursor: pointer;
  margin-left: 4px;
  border: 1px dashed light-dark(#aaa, #555);
  border-radius: 4px;
  background: none;
  padding: 4px 8px;
  color: light-dark(#57606a, #8b949e);
  font-size: 11px;
  font-family: inherit;
  white-space: nowrap;
}

#add-col-btn:hover {
  background: light-dark(#f0f0f0, #2d2d2d);
}

#col-options-body {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 4px 16px;
  padding: 10px 12px;
}

.col-opt-group {
  grid-column: 1 / -1;
  margin: 8px 0 2px;
  border-bottom: 1px solid light-dark(#d0d7de, #30363d);
  padding: 3px 4px;
  color: light-dark(#0550ae, #9cdcfe);
  font-weight: 700;
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.col-opt-group:first-child {
  margin-top: 0;
}

.col-opt-row {
  display: flex;
  align-items: center;
  gap: 8px;
  border-radius: 3px;
  padding: 2px 4px;
}

.col-opt-row:hover {
  background: light-dark(rgba(0, 0, 0, 0.04), rgba(255, 255, 255, 0.04));
}

.col-opt-label {
  min-width: 130px;
  overflow: hidden;
  color: light-dark(#1f2328, #e6edf3);
  font-size: 11px;
  font-family: 'Courier New', monospace;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.col-opt-input input[type='text'],
.col-opt-input input[type='number'],
.col-opt-input select {
  border: 1px solid light-dark(#ccc, #555);
  border-radius: 4px;
  background: light-dark(#fff, #2d2d2d);
  padding: 2px 4px;
  width: 100px;
  color: light-dark(#24292f, #e6edf3);
  font-size: 11px;
}

.col-opt-input input[type='checkbox'] {
  cursor: pointer;
  width: 14px;
  height: 14px;
  accent-color: #0969da;
}

.editor-params-section {
  grid-column: 1 / -1;
  margin-top: 4px;
  border-top: 1px solid light-dark(#e8ecf0, #2d2d2d);
  padding-top: 6px;
}

.editor-params-heading {
  margin-bottom: 4px;
  color: light-dark(#57606a, #8b949e);
  font-weight: 700;
  font-size: 10px;
  font-family: 'Courier New', monospace;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.editor-params-empty {
  color: light-dark(#999, #666);
  font-style: italic;
  font-size: 11px;
}

.editor-params-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 2px 16px;
}

#col-opts-btn-row {
  display: flex;
  grid-column: 1 / -1;
  gap: 6px;
  margin-bottom: 8px;
}

#remove-col-btn {
  display: block;
  flex: 1;
  cursor: pointer;
  border: 1px solid light-dark(#fca5a5, #7f1d1d);
  border-radius: 4px;
  background: light-dark(#fff5f5, #2c0f0f);
  padding: 4px;
  color: light-dark(#b91c1c, #fca5a5);
  font-size: 11px;
  font-family: inherit;
}

#remove-col-btn:hover {
  background: light-dark(#fee2e2, #3d1515);
}

#reset-col-opts-btn {
  display: block;
  cursor: pointer;
  border: 1px solid light-dark(#d0d7de, #555);
  border-radius: 4px;
  background: none;
  padding: 4px 10px;
  color: light-dark(#57606a, #8b949e);
  font-size: 11px;
  font-family: inherit;
  white-space: nowrap;
}

#reset-col-opts-btn:hover {
  border-color: light-dark(#0969da, #58a6ff);
  color: light-dark(#0969da, #58a6ff);
}

/* ── Config preview ── */
#config-section {
  border: 1px solid light-dark(#d0d7de, #444);
  border-radius: 6px;
  overflow: hidden;
}

#config-toggle {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  border: none;
  background: light-dark(#f6f8fa, #1c1c1c);
  padding: 7px 12px;
  width: 100%;
  color: light-dark(#57606a, #8b949e);
  font-weight: 700;
  font-size: 11px;
  font-family: inherit;
  letter-spacing: 0.05em;
  text-align: left;
  text-transform: uppercase;
}

#config-toggle > span:first-of-type {
  flex: 1;
}

#config-toggle:hover {
  background: light-dark(#eaeef2, #252525);
}

#config-body {
  display: none;
  background: light-dark(#f6f8fa, #0d1117);
  max-height: 200px;
  overflow: auto;
}

#config-body.open {
  display: block;
}

#config-json {
  margin: 0;
  padding: 12px;
  color: light-dark(#0550ae, #9cdcfe);
  font-size: 11px;
  font-family: 'Courier New', monospace;
  white-space: pre;
}

#config-copy-wrap {
  display: flex;
  justify-content: flex-end;
  padding: 6px 10px 2px;
}

#config-copy-btn {
  cursor: pointer;
  border: 1px solid light-dark(#d0d7de, #555);
  border-radius: 4px;
  background: none;
  padding: 2px 8px;
  color: light-dark(#57606a, #8b949e);
  font-weight: 600;
  font-size: 10px;
  font-family: inherit;
  letter-spacing: 0;
  text-transform: none;
  white-space: nowrap;
}

#config-copy-btn:hover {
  border-color: light-dark(#0969da, #58a6ff);
  color: light-dark(#0969da, #58a6ff);
}