/* SimAsst 在线工具 — 共用样式 */
@import url("../css/account-widget.css");

:root {
  --brand: #0a9676;
  --brand-dark: #087a60;
  --brand-light: #e8f7f3;
  --text: #1e2a36;
  --text-muted: #5a6a7a;
  --border: #dde4ec;
  --surface: #ffffff;
  --bg: #f4f7fa;
  --shadow: 0 8px 24px rgba(15, 35, 55, 0.1);
  --radius: 10px;
  --nav-h: 52px;
  --mono: Consolas, "Courier New", monospace;
}

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

html {
  scroll-padding-top: var(--nav-h);
}

body.tools-page {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
  min-height: 100vh;
  overflow-x: hidden;
}

.tools-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: var(--nav-h);
  padding: 0 16px;
  padding-top: env(safe-area-inset-top, 0px);
  background: rgba(20, 28, 36, 0.94);
  backdrop-filter: blur(8px);
  color: #fff;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

.tools-header a {
  color: #fff;
  text-decoration: none;
}

.tools-header a:hover {
  color: #b8f0e0;
}

.tools-brand {
  flex-shrink: 0;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.02em;
}

.tools-header-title {
  flex: 1;
  min-width: 0;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.78);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tools-header-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  margin-left: auto;
}

.tools-header .account-widget {
  flex-shrink: 0;
  margin-left: 4px;
}

.tools-header-link {
  font-size: 13px;
  padding: 6px 11px;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  white-space: nowrap;
  transition: background 0.2s;
}

.tools-header-link:hover {
  background: rgba(255, 255, 255, 0.1);
}

.tools-main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 20px 48px;
  overflow-x: hidden;
}

.tools-main h1 {
  margin: 0 0 8px;
  font-size: 26px;
  font-weight: 600;
}

.tools-lead {
  margin: 0 0 24px;
  color: var(--text-muted);
  font-size: 15px;
}

.tools-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--brand-light);
  color: var(--brand-dark);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 20px;
}

.tools-badge::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand);
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.tool-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow);
  transition: transform 0.2s, border-color 0.2s;
}

.tool-card:hover {
  transform: translateY(-2px);
  border-color: var(--brand);
}

.tool-card h2 {
  margin: 0 0 8px;
  font-size: 18px;
  color: var(--brand-dark);
}

.tool-card p {
  margin: 0;
  flex: 1;
  font-size: 14px;
  color: var(--text-muted);
}

.tool-card-tag {
  margin-top: 14px;
  font-size: 12px;
  color: var(--brand);
  font-weight: 600;
}

.tool-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 20px;
  align-items: start;
}

@media (max-width: 900px) {
  .tool-layout {
    grid-template-columns: 1fr;
  }
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
  min-width: 0;
}

.panel-table {
  overflow: hidden;
}

.panel h2 {
  margin: 0 0 14px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.form-row {
  margin-bottom: 12px;
}

.form-row label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 4px;
  color: var(--text-muted);
}

.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  background: #fff;
}

.form-row input[type="checkbox"],
.form-row input[type="radio"] {
  width: auto;
  padding: 0;
  margin: 0;
  accent-color: var(--brand);
}

.form-row--check {
  margin-bottom: 10px;
}

.form-row--check .check-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  user-select: none;
}

.form-row--check .check-label input:disabled + span,
.form-row--check .check-label input:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.form-row--check .check-hint {
  margin: 4px 0 0 24px;
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.45;
}

.form-row .syntax-editor {
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  box-sizing: border-box;
}

.form-row .syntax-editor:focus-within {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(10, 150, 118, 0.15);
}

.form-row .syntax-editor__input {
  width: 100%;
  padding: 8px 10px;
  border: none;
  border-radius: 0;
  font-size: 14px;
  font-family: inherit;
  background: transparent;
  box-shadow: none;
}

.form-row textarea,
.form-row textarea.syntax-editor__input {
  min-height: 140px;
  resize: vertical;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.45;
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(10, 150, 118, 0.15);
}

.form-row .syntax-editor__input:focus {
  outline: none;
  border-color: transparent;
  box-shadow: none;
}

.sweep-hint {
  margin: 6px 0 0;
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

.sweep-hint strong {
  color: var(--brand-dark);
  font-weight: 600;
}

.sweep-hint code {
  font-size: 11px;
  background: #eef2f7;
  padding: 1px 5px;
  border-radius: 3px;
}

select:disabled {
  background: #f1f5f9;
  color: var(--text-muted);
  cursor: not-allowed;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.btn {
  padding: 8px 16px;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s, opacity 0.2s;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--brand);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--brand-dark);
}

.btn-secondary {
  background: #eef2f6;
  color: var(--text);
}

.btn-secondary:hover:not(:disabled) {
  background: #e2e8f0;
}

.output-box {
  margin-top: 12px;
  padding: 10px 12px;
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 220px;
  overflow: auto;
}

.syntax-editor {
  position: relative;
  width: 100%;
}

.syntax-editor__backdrop {
  position: absolute;
  inset: 0;
  margin: 0;
  padding: 8px 10px;
  border: 1px solid transparent;
  border-radius: inherit;
  overflow: auto;
  pointer-events: none;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.45;
  color: var(--text);
  background: transparent;
  box-sizing: border-box;
}

.syntax-editor--single .syntax-editor__backdrop,
.syntax-editor--single .syntax-editor__backdrop code {
  white-space: pre;
}

.syntax-editor__backdrop code {
  display: block;
  font: inherit;
  white-space: pre-wrap;
  word-break: break-word;
}

.syntax-editor__input {
  position: relative;
  z-index: 1;
  width: 100%;
  background: transparent;
  resize: vertical;
}

.syntax-editor__input--active {
  color: transparent;
  caret-color: var(--text);
  -webkit-text-fill-color: transparent;
  background: transparent !important;
}

.syntax-editor__input:not(.syntax-editor__input--active) {
  color: var(--text);
  -webkit-text-fill-color: currentcolor;
}

.syntax-editor:not(.syntax-editor--active) .syntax-editor__backdrop {
  visibility: hidden;
}

.copyable-wrap > .syntax-editor > .syntax-editor__input,
.copyable-wrap > .syntax-editor > .syntax-editor__backdrop {
  padding-top: 32px;
}

.syntax-editor--single .syntax-editor__backdrop {
  font-family: inherit;
  font-size: 14px;
  line-height: normal;
}

.syntax-editor--active .syn-kw {
  color: #c80000;
  font-weight: 600;
}

.syntax-editor--active .syn-func {
  color: #1a4a8b;
  font-weight: 600;
}

.syntax-editor--active .syn-var {
  color: #c24a2e;
  font-weight: 600;
}

.syntax-editor--active .syn-bracket {
  color: #009600;
  font-weight: 600;
}

.syntax-editor--active .syn-num {
  color: #0d7a6b;
}

.syntax-editor--active .syn-op {
  color: #5c5c5c;
}

.syntax-static--active .syn-kw {
  color: #c80000;
  font-weight: 600;
}

.syntax-static--active .syn-func {
  color: #1a4a8b;
  font-weight: 600;
}

.syntax-static--active .syn-var {
  color: #c24a2e;
  font-weight: 600;
}

.syntax-static--active .syn-bracket {
  color: #009600;
  font-weight: 600;
}

.syntax-static--active .syn-num {
  color: #0d7a6b;
}

.syntax-static--active .syn-op {
  color: #5c5c5c;
}

/* filter-rule 专用色（对齐桌面 RuleHighlighter） */
.syntax-editor--active[data-syntax="filter-rule"] .syn-func,
.syntax-static--active[data-syntax="filter-rule"] .syn-func {
  color: #960096;
}

.syntax-editor--active[data-syntax="filter-rule"] .syn-var,
.syntax-static--active[data-syntax="filter-rule"] .syn-var {
  color: #0064c8;
}

.chart-wrap {
  position: relative;
  width: 100%;
  min-height: 360px;
}

.chart-wrap canvas {
  display: block;
  width: 100%;
  border-radius: 6px;
  background: #fff;
}

.chart-chrome {
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: 6px;
  overflow: hidden;
}

.chart-copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 3;
  pointer-events: auto;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.94);
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(15, 35, 55, 0.08);
  transition: opacity 0.18s ease, visibility 0.18s ease, color 0.15s, border-color 0.15s, background 0.15s;
}

.chart-wrap--has-data .chart-copy-btn {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.chart-wrap--has-data:hover .chart-copy-btn,
.chart-wrap--has-data .chart-copy-btn:focus-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.chart-copy-btn:hover,
.chart-copy-btn:focus-visible {
  color: var(--brand-dark);
  border-color: #b8dfd4;
  background: #fff;
}

.chart-copy-btn.is-copied {
  color: var(--brand-dark);
  border-color: var(--brand);
  background: var(--brand-light);
}

.chart-hint {
  position: absolute;
  left: 50%;
  bottom: 10px;
  z-index: 2;
  transform: translateX(-50%) translateY(6px);
  max-width: calc(100% - 24px);
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(20, 28, 36, 0.78);
  color: rgba(255, 255, 255, 0.92);
  font-size: 11px;
  line-height: 1.4;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.28s ease, transform 0.28s ease;
}

.chart-hint.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.chart-label-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.chart-math-label {
  position: absolute;
  pointer-events: none;
  overflow: visible;
  width: max-content;
  max-width: none;
}

.chart-math-label-inner {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  white-space: nowrap;
  line-height: 1.2;
}

.chart-math-label .katex {
  font-size: 1em;
}

.chart-math-label--y .chart-math-label-inner {
  transform-origin: center center;
}

.tip-box {
  margin: 16px 0 0;
  padding: 10px 14px;
  background: #f0faf7;
  border-left: 4px solid var(--brand);
  border-radius: 0 6px 6px 0;
  font-size: 13px;
  color: var(--text-muted);
}

.warn-box {
  margin: 12px 0 0;
  padding: 10px 14px;
  background: #fffbeb;
  border-left: 4px solid #f59e0b;
  border-radius: 0 6px 6px 0;
  font-size: 13px;
  color: #92400e;
}

.error-box {
  margin: 12px 0 0;
  padding: 10px 14px;
  background: #fef2f2;
  border-left: 4px solid #ef4444;
  border-radius: 0 6px 6px 0;
  font-size: 13px;
  color: #b91c1c;
}

.var-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.var-item {
  display: grid;
  grid-template-columns: 1fr 100px;
  gap: 8px;
  align-items: center;
}

.var-item code {
  font-size: 12px;
  background: #eef2f7;
  padding: 4px 8px;
  border-radius: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tools-footer {
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
}

.tools-footer a {
  color: var(--brand);
}

.tool-layout-wide {
  grid-template-columns: minmax(300px, 380px) 1fr;
}

.form-row-inline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(0, 1fr));
  gap: 10px;
}

.form-row-inline > div {
  min-width: 0;
}

.form-row-inline label {
  font-size: 12px;
}

.form-row-inline input,
.form-row-inline select {
  width: 100%;
  box-sizing: border-box;
}

.premium-panel .form-row input,
.premium-panel .form-row select {
  width: 100%;
  box-sizing: border-box;
}

.curve-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 160px;
  overflow: auto;
}

.curve-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
}

.curve-swatch {
  width: 14px;
  height: 4px;
  border-radius: 2px;
  flex-shrink: 0;
}

.curve-label-input {
  flex: 1;
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 13px;
}

.btn-icon {
  border: none;
  background: #fee2e2;
  color: #b91c1c;
  width: 24px;
  height: 24px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
}

.premium-panel {
  margin-top: 14px;
  padding: 12px;
  background: #f0faf7;
  border-radius: 8px;
  border: 1px solid #b8ead9;
}

.premium-panel > .form-row:first-child,
.premium-panel > .form-row-inline:first-child {
  margin-top: 0;
}

.muted-hint {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
}

.chart-wrap-tall canvas {
  min-height: 400px;
}

.table-wrap {
  overflow: auto;
  max-height: 520px;
  max-width: 100%;
  border: 1px solid var(--border);
  border-radius: 6px;
  -webkit-overflow-scrolling: touch;
}

.table-wrap table {
  width: max-content;
  min-width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.table-wrap th,
.table-wrap td {
  padding: 6px 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  white-space: nowrap;
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.table-wrap th {
  background: #f8fafc;
  position: sticky;
  top: 0;
}

.badge-count {
  font-size: 12px;
  font-weight: normal;
  color: var(--text-muted);
}

.csv-file-zone {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 14px 12px;
  background: #fafcfd;
  transition: border-color 0.2s, background 0.2s;
}

.csv-file-zone--over {
  border-color: var(--brand);
  background: var(--brand-light);
}

.csv-file-zone__hint {
  margin: 0;
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
}

.link-btn {
  border: none;
  background: none;
  padding: 0;
  color: var(--brand-dark);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.link-btn:hover {
  color: var(--brand);
}

.csv-file-list {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.csv-file-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
}

.csv-file-item--selected {
  border-color: var(--brand);
  background: var(--brand-light);
}

.csv-file-item__check {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  margin: 0;
  cursor: pointer;
}

.csv-file-item__name {
  flex: 1;
  min-width: 0;
  padding: 0;
  text-align: left;
  font: inherit;
  font-size: 13px;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.csv-file-list-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 8px;
  font-size: 12px;
}

.csv-file-list-actions__sep {
  color: var(--text-muted);
}

.column-hint {
  margin: -4px 0 10px;
}

.csv-file-item__remove {
  flex-shrink: 0;
}

.rule-ac-popup {
  position: absolute;
  z-index: 1000;
  max-height: 220px;
  overflow: auto;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: var(--shadow);
}

.rule-ac-item {
  display: block;
  width: 100%;
  padding: 7px 12px;
  border: none;
  background: none;
  text-align: left;
  font: inherit;
  font-size: 13px;
  font-family: var(--mono);
  cursor: pointer;
}

.rule-ac-item:hover,
.rule-ac-item--active {
  background: var(--brand-light);
  color: var(--brand-dark);
}

.tool-card--server {
  border-color: #c4ddd6;
}

.search-status {
  min-height: 1.25em;
  margin: 8px 0 0;
}

.search-inline {
  display: flex;
  gap: 8px;
  align-items: stretch;
}

.search-inline input[type="search"],
.search-inline input[type="text"] {
  flex: 1;
  min-width: 0;
  margin: 0;
}

.search-inline .btn {
  flex-shrink: 0;
  align-self: stretch;
  white-space: nowrap;
}

.copyable-wrap {
  position: relative;
}

.copyable-wrap > textarea,
.copyable-wrap > .output-box,
.copyable-wrap > input[type="text"] {
  width: 100%;
}

.copyable-wrap > textarea,
.copyable-wrap > .output-box {
  padding-top: 32px;
}

.copyable-btn {
  position: absolute;
  top: 6px;
  right: 6px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--text-muted);
  cursor: pointer;
  opacity: 0.82;
  transition: opacity 0.15s, color 0.15s, border-color 0.15s, background 0.15s;
}

.copyable-wrap:hover .copyable-btn,
.copyable-btn:focus-visible {
  opacity: 1;
}

.copyable-btn:hover {
  color: var(--brand-dark);
  border-color: #b8dfd4;
  background: #fff;
}

.copyable-btn.is-copied {
  color: var(--brand-dark);
  border-color: var(--brand);
  background: var(--brand-light);
}

.btn.is-loading {
  opacity: 0.72;
  cursor: wait;
}

.material-list {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
  max-height: 480px;
  overflow: auto;
}

.material-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
}

.material-link {
  border: none;
  background: none;
  color: var(--brand-dark);
  cursor: pointer;
  font-size: 14px;
  text-align: left;
  padding: 0;
}

.material-link:hover {
  text-decoration: underline;
}

.material-meta {
  font-size: 11px;
  color: var(--text-muted);
  margin-left: auto;
}

.prop-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  margin-top: 10px;
}

.prop-table th,
.prop-table td {
  padding: 6px 10px;
  border: 1px solid var(--border);
}

.login-gate {
  text-align: center;
  padding: 40px 24px;
}

.compare-box {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

@media (max-width: 767px) {
  :root {
    --nav-h: 50px;
  }

  .tools-header {
    gap: 8px;
    padding: 6px 10px;
    padding-top: calc(6px + env(safe-area-inset-top, 0px));
    min-height: var(--nav-h);
  }

  .tools-brand {
    font-size: 15px;
    max-width: 72px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .tools-header-title {
    display: none;
  }

  .tools-header-nav {
    gap: 6px;
  }

  .tools-header-link {
    font-size: 12px;
    padding: 7px 9px;
    min-height: 34px;
    display: inline-flex;
    align-items: center;
  }

  .tools-header .account-widget {
    margin-left: 0;
  }

  .tools-header .account-widget__btn {
    width: 34px;
    height: 34px;
  }

  .tools-main {
    padding: 16px 12px calc(32px + env(safe-area-inset-bottom, 0px));
  }

  .tools-main h1 {
    font-size: 22px;
  }

  .tools-lead {
    font-size: 14px;
  }

  .tool-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .tool-layout,
  .tool-layout-wide {
    grid-template-columns: 1fr;
  }

  .form-row-inline {
    grid-template-columns: 1fr;
  }

  .var-item {
    grid-template-columns: 1fr;
  }

  .panel {
    padding: 14px;
  }

  .expr-calc-layout {
    grid-template-columns: 1fr;
    grid-template-areas:
      "editor"
      "result"
      "vars";
  }

  .chart-wrap {
    min-height: 260px;
  }

  .chart-wrap-tall canvas {
    min-height: 280px;
  }

  .chart-copy-btn {
    top: 6px;
    right: 6px;
    padding: 8px 10px;
    font-size: 11px;
  }

  .chart-hint {
    bottom: 8px;
    font-size: 10px;
    white-space: normal;
    text-align: center;
  }

  .table-wrap {
    max-height: 360px;
  }

  .btn-row {
    flex-direction: column;
  }

  .btn-row .btn {
    width: 100%;
    min-height: 44px;
  }

  .login-gate {
    padding: 28px 16px;
  }
}

/* 文本表达式计算器 */
.expr-calc-layout {
  display: grid;
  grid-template-columns: 1fr 1fr 220px;
  grid-template-areas: "editor result vars";
  gap: 16px;
  align-items: start;
}

.expr-calc-editor-panel {
  grid-area: editor;
}

.expr-calc-result-panel {
  grid-area: result;
}

.expr-calc-vars-panel {
  grid-area: vars;
}

.expr-calc-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.expr-calc-panel-head h2 {
  margin: 0;
}

.expr-calc-toolbar {
  margin: 0;
  flex-wrap: wrap;
}

.btn-sm {
  padding: 5px 10px;
  font-size: 12px;
}

.expr-calc-textarea {
  width: 100%;
  min-height: 360px;
  resize: vertical;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.55;
  background: #fff;
  tab-size: 4;
}

.expr-calc-result-view {
  min-height: 360px;
  max-height: 520px;
  overflow: auto;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fafbfc;
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
}

.expr-calc-result-line {
  min-height: 1.55em;
}

.expr-calc-result-line.is-error .expr-err {
  color: #b42318;
}

.expr-calc-result-line.is-plain {
  color: var(--text-muted);
}

.expr-src {
  color: var(--text);
}

.expr-sep {
  color: var(--text-muted);
}

.expr-val {
  color: var(--brand-dark);
  font-weight: 600;
}

.expr-calc-vars-wrap {
  max-height: 360px;
  overflow: auto;
}

.expr-calc-vars-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.expr-calc-vars-table th,
.expr-calc-vars-table td {
  padding: 6px 8px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

.expr-calc-vars-table th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 12px;
}

.expr-calc-vars-table td.mono {
  font-family: var(--mono);
}

.expr-calc-vars-table tr.is-builtin td {
  color: var(--text-muted);
}

@media (max-width: 1100px) {
  .expr-calc-layout {
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      "editor result"
      "vars vars";
  }
}

@media (max-width: 760px) {
  .expr-calc-layout {
    grid-template-columns: 1fr;
    grid-template-areas:
      "editor"
      "result"
      "vars";
  }

  .expr-calc-textarea,
  .expr-calc-result-view {
    min-height: 240px;
  }
}