:root {
  color-scheme: light;
  --bg: #eff1f5;
  --bg-gradient-start: #dce0e8;
  --bg-gradient-end: #eff1f5;
  --card: #eff1f5;
  --surface: #e6e9ef;
  --line: #bcc0cc;
  --line-soft: #ccd0da;
  --text: #4c4f69;
  --text-muted: #5c5f77;
  --accent: #1e66f5;
  --accent-contrast: #ffffff;
  --button-primary: #1e66f5;
  --button-primary-hover: #7287fd;
  --button-secondary: #179299;
  --button-secondary-hover: #209fb5;
  --button-ghost: #7c7f93;
  --button-ghost-hover: #6c6f85;
  --button-reset: #d20f39;
  --button-reset-hover: #e64553;
  --button-text: #ffffff;
  --checkbox-size: 20px;
  --file-button-bg: #4c4f69;
  --file-button-text: #ffffff;
  --color-border: #bcc0cc;
  --swatch-border: #8c8fa1;
  --error-border: #d20f39;
  --error-bg: rgba(210, 15, 57, 0.08);
  --error-text: #d20f39;
  --status-ok: #4c4f69;
  --status-error: #d20f39;
  --status-warning: #8a5300;
  --status-info: #5c5f77;
  --warning-bg: rgba(223, 142, 29, 0.14);
  --busy-bg: rgba(239, 241, 245, 0.72);
  --table-header-bg: #e6e9ef;
  --table-skipped-bg: #ccd0da;
  --table-skipped-text: #8c8fa1;
  --table-rownum-bg: #e6e9ef;
  --table-rownum-text: #6c6f85;
  --series-item-bg: #e6e9ef;
  --chip-border: #bcc0cc;
  --chip-active: #1e66f5;
  --chip-active-ring: rgba(30, 102, 245, 0.16);
  --plot-preview-bg: #e6e9ef;
  --shadow-lg: 0 10px 24px rgba(92, 95, 119, 0.16);
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #1e1e2e;
    --bg-gradient-start: #11111b;
    --bg-gradient-end: #1e1e2e;
    --card: #181825;
    --surface: #313244;
    --line: #45475a;
    --line-soft: #585b70;
    --text: #cdd6f4;
    --text-muted: #bac2de;
    --accent: #89b4fa;
    --accent-contrast: #1e1e2e;
    --button-primary: #89b4fa;
    --button-primary-hover: #b4befe;
    --button-secondary: #94e2d5;
    --button-secondary-hover: #74c7ec;
    --button-ghost: #9399b2;
    --button-ghost-hover: #bac2de;
    --button-reset: #f38ba8;
    --button-reset-hover: #eba0ac;
    --button-text: #1e1e2e;
    --file-button-bg: #45475a;
    --file-button-text: #cdd6f4;
    --color-border: #585b70;
    --swatch-border: #9399b2;
    --error-border: #f38ba8;
    --error-bg: rgba(243, 139, 168, 0.14);
    --error-text: #f5c2e7;
    --status-ok: #cdd6f4;
    --status-error: #f38ba8;
    --status-warning: #f9e2af;
    --status-info: #bac2de;
    --warning-bg: rgba(249, 226, 175, 0.12);
    --busy-bg: rgba(24, 24, 37, 0.7);
    --table-header-bg: #313244;
    --table-skipped-bg: #0f0f17;
    --table-skipped-text: #7f849c;
    --table-rownum-bg: #313244;
    --table-rownum-text: #a6adc8;
    --series-item-bg: #313244;
    --chip-border: #585b70;
    --chip-active: #89b4fa;
    --chip-active-ring: rgba(137, 180, 250, 0.22);
    --plot-preview-bg: #181825;
    --shadow-lg: 0 12px 28px rgba(17, 17, 27, 0.48);
  }
}
* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
}
body {
  margin: 0;
  color: var(--text);
  font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  background: linear-gradient(180deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
  overflow: hidden;
}
.layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  height: 100vh;
  min-height: 100vh;
}
.panel {
  padding: 20px;
  background: var(--card);
  border-right: 1px solid var(--line);
  max-height: 100vh;
  overflow-y: auto;
  overscroll-behavior: contain;
}
.viewer {
  display: flex;
  flex-direction: column;
  padding: 20px;
  min-height: 0;
  overflow: hidden;
}
h1 {
  margin: 0 0 16px;
  font-size: 20px;
}
.group {
  margin-bottom: 12px;
}
.row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  font-weight: 600;
}
input,
select,
button {
  width: 100%;
  padding: 9px 10px;
  border-radius: 8px;
  border: 1px solid var(--line);
  font-size: 14px;
  background: var(--card);
  color: var(--text);
}
.file-picker {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  font-size: 14px;
}
.file-picker:focus-within {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.file-picker-btn {
  flex: none;
  border-radius: 6px;
  padding: 8px 12px;
  background: var(--file-button-bg);
  color: var(--file-button-text);
  font-weight: 700;
  white-space: nowrap;
}
.file-picker:hover .file-picker-btn {
  background: var(--button-ghost-hover);
}
.file-picker-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text);
}
.file-picker-name[data-selected="false"] {
  color: var(--text-muted);
}
.file-picker input[type="file"] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  padding: 0;
  border: none;
  border-radius: 8px;
  opacity: 0;
  cursor: pointer;
}
.file-picker input[type="file"]::file-selector-button {
  cursor: pointer;
}
input[type="color"] {
  height: 42px;
  padding: 2px;
  border: 2px solid var(--color-border);
  border-radius: 10px;
  background: var(--card);
}
input[type="color"]::-webkit-color-swatch-wrapper {
  padding: 0;
}
input[type="color"]::-webkit-color-swatch {
  border: none;
  border-radius: 7px;
}
input[type="color"]::-moz-color-swatch {
  border: none;
  border-radius: 7px;
}
.color-value {
  margin-top: 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  color: var(--text-muted);
}
.inline {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
}
input[type="checkbox"] {
  width: var(--checkbox-size);
  height: var(--checkbox-size);
  margin: 0;
  flex: 0 0 var(--checkbox-size);
  cursor: pointer;
  accent-color: var(--accent);
}
.inline input {
  width: auto;
}
.inline label {
  margin: 0;
  font-weight: 500;
  cursor: pointer;
  user-select: none;
  padding: 4px 2px;
}
label.check-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: auto;
}
button {
  cursor: pointer;
  border: none;
  color: var(--button-text);
  background: var(--button-primary);
  font-weight: 700;
  transition: background-color 0.15s ease;
}
button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}
button.secondary {
  background: var(--button-secondary);
}
button.secondary:hover {
  background: var(--button-secondary-hover);
}
.status {
  margin-top: 10px;
  min-height: 22px;
  font-size: 13px;
}
.status[data-kind="ok"] {
  color: var(--status-ok);
}
.status[data-kind="warning"] {
  color: var(--status-warning);
}
.status[data-kind="error"] {
  color: var(--status-error);
  font-weight: 600;
}
.status[data-kind="info"] {
  color: var(--status-info);
}
.status[data-kind="ok"]::before {
  content: "\2713  ";
}
.status[data-kind="error"]::before {
  content: "\2715  ";
}
.status[data-kind="warning"] {
  padding: 6px 8px;
  border-left: 3px solid var(--status-warning);
  border-radius: 4px;
  background: var(--warning-bg);
}
.status-warning-item {
  color: var(--status-warning);
}
.status-warning-item::before {
  content: "\26A0  ";
}
.file-info {
  margin-top: 4px;
  font-size: 12px;
  color: var(--text-muted);
  word-break: break-all;
}
.file-info:empty {
  display: none;
}
.progress-banner {
  margin-bottom: 10px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--status-info);
  font-size: 13px;
}
.progress-banner[hidden] {
  display: none;
}
#plotPanel {
  position: relative;
}
.render-busy {
  position: absolute;
  top: 20px;
  right: 20px;
  z-index: 5;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--busy-bg);
  border: 1px solid var(--line);
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
  opacity: 0;
  animation: busy-in 0.15s ease-out 0.2s forwards; /* 短い描画では出さない */
}
.render-busy[hidden] {
  display: none;
}
@keyframes busy-in {
  to {
    opacity: 1;
  }
}
#plotPanel[aria-busy="true"] #plotArea {
  opacity: 0.6;
  transition: opacity 0.15s ease-out 0.2s;
}
.status-detail-wrap {
  margin-top: 8px;
  border: 1px solid var(--error-border);
  border-radius: 8px;
  background: var(--error-bg);
}
.status-detail-wrap.hidden {
  display: none;
}
.status-detail-wrap summary {
  padding: 8px 10px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 700;
  color: var(--error-text);
}
.status-detail {
  margin: 0;
  padding: 0 10px 10px;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 12px;
  line-height: 1.45;
  color: var(--error-text);
}
.canvas-wrap {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  min-height: 420px;
}
.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
}
.tab-btn {
  width: auto;
  min-width: 120px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  color: var(--text);
  font-weight: 700;
  cursor: pointer;
}
.tab-btn.active {
  background: var(--accent);
  color: var(--accent-contrast);
  border-color: var(--accent);
}
.tab-panel.hidden {
  display: none;
}
.viewer .tab-panel {
  flex: 1;
  min-height: 0;
}
#plotArea {
  width: 100%;
  background: var(--plot-preview-bg);
  border: 1px solid var(--line-soft);
  border-radius: 10px;
  padding: 8px;
}
#dataArea {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
}
#plotArea img,
#plotArea svg,
#plotArea canvas {
  max-width: 100%;
  height: auto;
}
.table-wrap {
  width: 100%;
  overflow: auto;
  max-height: none;
  min-height: 0;
  flex: 1;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
}
.table-wrap table {
  border-collapse: collapse;
  width: 100%;
  font-size: 13px;
}
.table-wrap th,
.table-wrap td {
  border: 1px solid var(--line-soft);
  padding: 6px 8px;
  white-space: nowrap;
  text-align: left;
}
.table-wrap thead th {
  position: sticky;
  top: 0;
  background: var(--table-header-bg);
  z-index: 1;
}
.table-wrap tbody tr.skipped-row td {
  background: var(--table-skipped-bg);
  color: var(--table-skipped-text);
}
.table-wrap .row-number {
  background: var(--table-rownum-bg);
  color: var(--table-rownum-text);
  text-align: right;
  width: 68px;
}
.data-meta {
  margin-bottom: 8px;
  font-size: 13px;
}
#dataPreamble {
  margin-bottom: 8px;
  padding: 8px 10px;
  border: 1px dashed var(--line);
  border-radius: 8px;
  background: var(--surface);
  font-size: 12px;
}
#dataPreamble .preamble-title {
  font-weight: 700;
  margin-bottom: 4px;
}
#dataPreamble .preamble-lines {
  margin: 0;
  max-height: 9em;
  overflow: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: pre;
  color: var(--text-muted);
}
#dataPreamble .preamble-more {
  margin-top: 4px;
  color: var(--text-muted);
}
.code-stale-note {
  margin-bottom: 8px;
  padding: 6px 10px;
  border-left: 3px solid var(--status-warning);
  border-radius: 6px;
  background: var(--warning-bg);
  color: var(--status-warning);
  font-size: 12px;
  font-weight: 700;
}
.code-stale-note[hidden] {
  display: none;
}
#codePanel {
  overflow: auto;
}
.code-editor-wrap {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 0;
}
.code-toolbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.code-toolbar button {
  width: auto;
}
.code-toolbar button[hidden] {
  display: none;
}
.code-sync-badge {
  margin-right: auto;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  background: var(--surface);
}
.code-sync-badge[data-state="edit"] {
  color: var(--status-warning);
  border-color: var(--status-warning);
  background: var(--warning-bg);
}
.code-editor-box {
  display: flex;
  height: clamp(260px, 52vh, 560px);
  min-height: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: var(--surface);
}
.is-edit .code-editor-box {
  border-color: var(--status-warning);
  box-shadow: 0 0 0 1px var(--status-warning);
}
.code-gutter,
#customPyCode {
  margin: 0;
  padding: 12px 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 20px;
  white-space: pre;
}
.code-gutter {
  flex: none;
  min-width: 3.4em;
  padding: 12px 8px 32px;
  overflow: hidden;
  text-align: right;
  color: var(--table-rownum-text);
  background: var(--table-rownum-bg);
  border-right: 1px solid var(--line-soft);
  user-select: none;
}
#customPyCode {
  flex: 1;
  min-width: 0;
  width: auto;
  padding: 12px;
  border: none;
  outline: none;
  resize: none;
  overflow: auto;
  background: transparent;
  color: var(--text);
  tab-size: 4;
}
#customPyCode:focus-visible {
  box-shadow: inset 0 0 0 2px var(--accent);
}
.code-output-title {
  margin: 6px 0 0;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-muted);
}
.code-output {
  margin: 0;
  max-height: 260px;
  min-height: 44px;
  overflow: auto;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  line-height: 1.5;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.code-output:empty::before {
  content: "（出力はありません）";
  color: var(--text-muted);
}
.code-output[data-kind="error"] {
  border-color: var(--error-border);
  background: var(--error-bg);
  color: var(--error-text);
}
.help-text {
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-muted);
}
.panel-section + .panel-section {
  margin-top: 14px;
  border-top: 1px solid var(--line);
}
.section-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 10px 2px;
  cursor: pointer;
  list-style: none;
  border-radius: 6px;
  user-select: none;
}
.panel-section:first-of-type > .section-header {
  padding-top: 0;
}
.section-header::-webkit-details-marker {
  display: none;
}
.section-header::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  margin: 0 3px 0 2px;
  border-right: 2px solid var(--text-muted);
  border-bottom: 2px solid var(--text-muted);
  transform: rotate(-45deg);
  transition: transform 0.12s ease;
}
.panel-section[open] > .section-header::before {
  transform: rotate(45deg);
}
.section-header:hover .section-title {
  color: var(--text);
}
.section-header:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.section-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}
.series-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}
.series-toolbar label,
.series-toolbar .field-label {
  margin: 0;
}
.field-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
}
button.small-btn {
  width: auto;
  padding: 7px 10px;
  font-size: 12px;
}
button.ghost-btn {
  background: var(--button-ghost);
}
button.ghost-btn:hover {
  background: var(--button-ghost-hover);
}
#applyCustomCodeBtn {
  background: var(--button-secondary);
}
#applyCustomCodeBtn:hover {
  background: var(--button-secondary-hover);
}
#resetCustomCodeBtn {
  background: var(--button-reset);
}
#resetCustomCodeBtn:hover {
  background: var(--button-reset-hover);
}
.series-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.series-item {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  background: var(--series-item-bg);
}
.series-item-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}
.series-item-title {
  font-size: 13px;
  font-weight: 700;
}
.series-item .group {
  margin-bottom: 8px;
}
.series-item .group:last-child {
  margin-bottom: 0;
}
.series-color-picker {
  position: relative;
}
.series-color-trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  color: var(--text);
  font-weight: 600;
}
.series-color-swatch-inline {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  border: 1px solid var(--swatch-border);
  flex: 0 0 auto;
}
.series-color-panel {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 30;
  min-width: 244px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  box-shadow: var(--shadow-lg);
}
.series-color-panel.hidden {
  display: none;
}
.series-color-grid {
  display: grid;
  grid-template-columns: repeat(6, 30px);
  gap: 6px;
  justify-content: start;
}
button.series-color-chip {
  width: 30px;
  height: 30px;
  padding: 0;
  border: 2px solid var(--chip-border);
  border-radius: 6px;
  color: transparent;
}
button.series-color-chip.active {
  border-color: var(--chip-active);
  box-shadow: 0 0 0 2px var(--chip-active-ring);
}
.series-color-custom-toggle {
  margin-top: 8px;
}
.series-color-custom.hidden {
  display: none;
}
.series-x-wrap {
  display: none;
}
@media (max-width: 960px) {
  body {
    overflow: auto;
  }
  .layout {
    grid-template-columns: minmax(0, 1fr);
    height: auto;
  }
  .panel {
    border-right: none;
    border-bottom: 1px solid var(--line);
    max-height: none;
    overflow: visible;
    overscroll-behavior: auto;
  }
  .viewer {
    display: block;
    overflow: visible;
  }
  #dataArea {
    display: block;
    height: auto;
  }
  .table-wrap {
    max-height: 520px;
    flex: none;
  }
}
@media (max-width: 480px) {
  .tabs {
    gap: 6px;
  }
  .tab-btn {
    flex: 1 1 auto;
    min-width: 0;
    padding: 8px 6px;
    font-size: 13px;
  }
}

.preset-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}
.preset-row button {
  width: auto;
  padding-left: 16px;
  padding-right: 16px;
}
.row-size {
  grid-template-columns: 1fr 1fr 5.5rem;
}
#mathtextHelp a {
  color: var(--accent, inherit);
  text-decoration: underline;
}

[hidden] {
  display: none !important;
}
.dpi-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}
.dpi-row.has-custom {
  grid-template-columns: 1fr 1fr;
}
.dpi-row input {
  margin-top: 0;
}
.save-actions {
  grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
  align-items: stretch;
}
.save-actions button {
  padding-left: 6px;
  padding-right: 6px;
  font-size: 13px;
  white-space: nowrap;
}

/* 表の貼り付け欄とファイルのドロップ */
.paste-area {
  width: 100%;
  box-sizing: border-box;
  resize: vertical;
  padding: 8px;
  border: 2px dashed var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font-size: 13px;
}
.paste-area:focus {
  border-color: var(--accent);
  outline: none;
}
#savePastedBtn {
  margin-top: 8px;
}
.drop-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: stretch;
  justify-content: center;
  padding: 24px;
  box-sizing: border-box;
  background: var(--busy-bg);
}
.drop-overlay[hidden] {
  display: none;
}
.drop-zones {
  display: flex;
  flex: 1;
  gap: 24px;
}
.drop-zone {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 3px dashed var(--accent);
  border-radius: 16px;
  background: var(--card);
  color: var(--accent);
  font-size: 22px;
  font-weight: 700;
  text-align: center;
}

.col-kind-tag {
  display: inline-block;
  margin-left: 6px;
  padding: 0 5px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  color: var(--accent);
  font-size: 10px;
  font-weight: normal;
  line-height: 1.5;
  vertical-align: middle;
}

.drop-zone[hidden] {
  display: none;
}
.drop-zone.drop-zone-active {
  background: var(--accent);
  color: var(--accent-contrast);
}
.add-file-row {
  margin-top: 8px;
}
.file-list {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.file-list[hidden] {
  display: none;
}
.file-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 8px;
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  font-size: 13px;
}
.file-row[data-state="error"] {
  border-color: var(--error-border);
}
.file-row-no {
  font-weight: 700;
  color: var(--accent);
}
.file-row-name {
  flex: 1 1 120px;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.file-row-kind {
  color: var(--text-muted);
  font-size: 12px;
}
.file-row select {
  max-width: 100%;
}
.file-row-error {
  flex-basis: 100%;
  color: var(--error-text);
  font-size: 12px;
  overflow-wrap: anywhere;
}
.file-row-loading {
  color: var(--text-muted);
  font-size: 12px;
}
.preview-source {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.preview-source[hidden] {
  display: none;
}
.series-source-wrap[hidden] {
  display: none;
}