/* =====================================================================
     DESIGN: Industrial/Technical — dark sidebar, steel-toned panels,
     monospace accents. Built for engineers, not marketers.
  ===================================================================== */
  @import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=DM+Sans:wght@300;400;500;600;700&display=swap');
  :root {
    --surface:   #162033;
    --card:      #1C2942;
    --danger:    #FF8B8B;
    --warn:      #FFD28C;
    --label:     #A8B6CF;
    --highlight: #1C2942;
    --mono:      'DM Mono', monospace;
    --sans:      'DM Sans', sans-serif;
    --radius:    10px;
    --radius-card: 14px;
  }

  body.light {
    --surface:   #FFFFFF;
    --card:      #FFFFFF;
    --danger:    #E63939;
    --warn:      #B45309;
    --label:     #7F8C8D;
    --highlight: #F8FBFF;
    --shadow:    0 2px 16px rgba(120,160,220,0.10);
  }

  /* Light mode overrides for hardcoded dark values */
  body.light #validation-errors {
    background: #FDECEC;
    border-color: rgba(230,57,57,0.25);
  }
  body.light #validation-errors ul li { color: #C0392B; }
  body.light #validation-warnings {
    background: #FFF0D9;
    border-color: rgba(180,83,9,0.30);
  }
  body.light #validation-warnings h4 { color: #7A4A00; }
  body.light #validation-warnings ul li { color: #7A4A00; }
  body.light .info-box {
    background: #EAF2FF;
    border-color: rgba(90,145,232,0.30);
    color: #3A71C8;
  }
  body.light .info-box .info-more-toggle { color: var(--accent); }
  body.light .info-box .info-extra {
    color: #5A91E8;
    border-top-color: rgba(90,145,232,0.15);
  }
  body.light .pf-combo-drop {
    background: var(--card);
    box-shadow: 0 8px 32px rgba(0,0,0,0.18);
  }
  body.light .pf-combo-item {
    border-bottom-color: var(--border);
  }

  /* Theme toggle button */
  .btn-theme {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 3px 10px;
    font-size: 11px;
    font-weight: 600;
    color: var(--muted);
    background: var(--bg);
    cursor: pointer;
    font-family: var(--sans);
    transition: border-color 0.15s, color 0.15s, background 0.15s;
    white-space: nowrap;
  }
  .btn-theme:hover {
    border-color: var(--accent);
    color: var(--text);
  }

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

  body {
    font-family: var(--sans);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    font-size: 14px;
    line-height: 1.5;
    display: flex;
    flex-direction: column;
    transition: background 0.25s, color 0.25s;
  }

  /* ── TOP BAR ─────────────────────────────────────────────────────── */
  header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 8px 24px 10px;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 14px;
    position: sticky;
    top: 0;
    z-index: 100;
  }
  header .logo {
    font-family: var(--mono);
    font-weight: 600;
    font-size: 15px;
    color: var(--accent);
    letter-spacing: 0.04em;
  }
  header .logo span { color: var(--accent2); }
  .header-left {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    min-width: 0;
    flex: 1;
  }
  .header-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 6px;
    flex-shrink: 0;
  }
  .header-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: flex-end;
  }
  .header-text {
    min-width: 0;
  }
  .header-title {
    font-family: var(--mono);
    font-weight: 600;
    font-size: 15px;
    color: var(--accent);
    letter-spacing: 0.04em;
  }
  .header-subtitle {
    font-size: 12px;
    color: var(--muted);
    margin-top: 2px;
  }
  .back-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 3px 8px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text);
    background: var(--bg);
    text-decoration: none;
    transition: border-color 0.15s, color 0.15s;
    white-space: nowrap;
  }
  .back-link:hover {
    border-color: var(--accent);
    color: var(--accent);
  }


  /* ── LAYOUT ──────────────────────────────────────────────────────── */
  .layout {
    display: flex;
    flex-direction: row;
    gap: 0;
    align-items: stretch;
    flex: 1;
    min-height: 0;
    overflow: visible;
  }
  .left-pane {
    width: 44%;
    min-width: 280px;
    flex-shrink: 0;
    position: sticky;
    top: 72px;
    align-self: start;
    overflow-y: auto;
    max-height: calc(100vh - 88px);
    padding: 20px 20px 40px;
    background: var(--bg);
    border-right: 1px solid var(--border);
  }
  .right-pane {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    background: var(--surface);
    overflow: hidden;
    /* Bound the pane to the viewport so the toolbar stays pinned on top and
       only the code preview scrolls — no need to scroll back up for buttons. */
    position: sticky;
    top: 72px;
    align-self: start;
    max-height: calc(100vh - 88px);
  }
  /* ── PANE RESIZER ────────────────────────────────────────────── */
  .pane-resizer {
    width: 5px;
    flex-shrink: 0;
    background: var(--border);
    cursor: col-resize;
    transition: background 0.2s;
    position: relative;
    z-index: 10;
  }
  .pane-resizer:hover, .pane-resizer.dragging { background: var(--accent); }
  .pane-resizer::after {
    content: '⋮';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--muted);
    font-size: 14px;
    line-height: 1;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s;
  }
  .pane-resizer:hover::after { opacity: 1; }

  /* ── SECTION CARDS ───────────────────────────────────────────────── */
  .section-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    margin-bottom: 14px;
    overflow: visible;
    box-shadow: var(--shadow);
  }
  .section-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    user-select: none;
  }
  .section-header h3 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
    flex: 1;
  }
  .section-header .toggle-icon {
    color: var(--muted);
    font-size: 12px;
    transition: transform 0.2s;
  }
  .section-header.collapsed .toggle-icon { transform: rotate(-90deg); }
  .section-body {
    padding: 16px;
  }
  .section-body.hidden { display: none; }

  /* ── FORM ELEMENTS ───────────────────────────────────────────────── */
  .form-row {
    display: grid;
    grid-template-columns: 140px 1fr;
    align-items: start;
    gap: 8px;
    margin-bottom: 10px;
  }
  .form-row.full { grid-template-columns: 1fr; }
  label {
    font-size: 12px;
    color: var(--label);
    padding-top: 7px;
    font-weight: 500;
  }
  input[type="text"], input[type="number"], select, textarea {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-family: var(--sans);
    font-size: 13px;
    padding: 6px 10px;
    width: 100%;
    transition: border-color 0.15s;
    outline: none;
  }
  input:focus, select:focus, textarea:focus {
    border-color: var(--accent);
  }
  input.error, select.error { border-color: var(--danger) !important; }

  select option { background: var(--card); }

  .hint {
    font-size: 11px;
    color: var(--muted);
    margin-top: 4px;
    line-height: 1.4;
  }

  .checkbox-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
  }
  input[type="checkbox"] {
    width: 15px;
    height: 15px;
    accent-color: var(--accent);
    cursor: pointer;
  }
  .checkbox-row label {
    padding-top: 0;
    cursor: pointer;
    color: var(--text);
  }

  /* ── DYNAMIC TABLES ──────────────────────────────────────────────── */
  .dyn-table-wrapper {
    overflow-x: auto;
    overflow-y: visible;
    position: relative;
    z-index: 1;
  }
  .dyn-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
    min-width: 500px;
  }
  .dyn-table th {
    background: var(--surface);
    color: var(--label);
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 6px 8px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
  }
  #input-table th {
    text-align: center;
  }
  #input-table th .th-two-line {
    display: inline-block;
    line-height: 1.15;
    text-align: center;
  }
  .dyn-table td {
    padding: 5px 4px;
    vertical-align: top;
    border-bottom: 1px solid var(--border);
  }
  .dyn-table td input,
  .dyn-table td select {
    padding: 5px 6px;
    font-size: 12px;
    width: 100%;
    min-width: 60px;
  }
  .dyn-table td.td-action {
    width: 36px;
    vertical-align: middle;
    text-align: center;
  }

  /* ── BUTTONS ─────────────────────────────────────────────────────── */
  .btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    font-family: var(--sans);
    font-size: 12px;
    font-weight: 600;
    padding: 7px 14px;
    transition: opacity 0.15s, background 0.15s;
    text-decoration: none;
    white-space: nowrap;
  }
  .btn:hover { opacity: 0.85; }
  .btn-primary   { background: var(--accent);  color: #0F1728; }
  .btn-success   { background: var(--accent2); color: #0F1728; }
  .btn-danger    { background: rgba(255,139,139,0.18);  color: var(--danger); border: 1px solid rgba(255,139,139,0.35); }
  .btn-ghost     { background: var(--highlight); color: var(--text); border: 1px solid var(--border); }
  .btn-warn      { background: rgba(255,210,140,0.18);    color: var(--warn); border: 1px solid rgba(255,210,140,0.35); }
  .btn-xs        { padding: 3px 8px; font-size: 11px; }
  .btn-icon      { width: 28px; height: 28px; padding: 0; justify-content: center; font-size: 14px; }
  .btn-remove    { background: rgba(255,139,139,0.10); color: var(--danger); border: 1px solid rgba(255,139,139,0.28); }
  .btn-remove:hover { background: rgba(255,139,139,0.22); color: var(--danger); }

  .btn-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 10px;
  }

  /* ── RIGHT PANE ──────────────────────────────────────────────────── */
  .right-toolbar {
    padding: 12px 16px;
    background: var(--card);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    position: sticky;
    top: 0;
    z-index: 90;
  }
  .right-toolbar .pane-title {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--muted);
    font-weight: 600;
    margin-right: auto;
  }

  #code-preview-wrapper {
    flex: 1;
    overflow-y: auto;
    position: relative;
  }
  #code-preview {
    margin: 0;
    padding: 16px 20px;
    font-family: var(--mono);
    font-size: 12.5px;
    line-height: 1.6;
    background: #0F1728 !important;
    min-height: 100%;
    white-space: pre;
    overflow-x: auto;
  }
  body.light #code-preview-wrapper { background: #F5F7FA; }
  body.light #code-preview { background: #F5F7FA !important; }
  #code-preview code {
    font-family: inherit;
    background: none !important;
    padding: 0;
  }
  .hljs { background: transparent !important; }

  /* ── NOTEBOOK-STYLE CELL PREVIEW ──────────────────────────────────── */
  #nb-preview {
    padding: 14px 16px 28px;
    min-height: 100%;
    background: #0F1728;
  }
  body.light #nb-preview { background: #F5F7FA; }
  .nb-md-heading {
    display: block;
    font-family: var(--sans);
    font-weight: 700;
    font-size: 13px;
    color: var(--text);
    margin: 14px 0 6px;
  }
  .nb-md-heading:first-child { margin-top: 0; }
  .nb-cell {
    display: flex;
    gap: 8px;
    margin: 0 0 6px;
  }
  .nb-prompt {
    flex-shrink: 0;
    width: 58px;
    text-align: right;
    font-family: var(--mono);
    font-size: 11px;
    color: var(--muted);
    padding-top: 12px;
    user-select: none;
  }
  .nb-source {
    flex: 1;
    min-width: 0;
    margin: 0;
    padding: 10px 14px;
    font-family: var(--mono);
    font-size: 12.5px;
    line-height: 1.6;
    background: var(--card);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    border-radius: 6px;
    white-space: pre;
    overflow-x: auto;
  }
  body.light .nb-source { background: #FFFFFF; }
  .nb-source code {
    font-family: inherit;
    background: none !important;
    padding: 0;
  }

  .placeholder-msg {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 200px;
    color: var(--muted);
    gap: 8px;
    font-family: var(--mono);
    font-size: 13px;
  }
  .placeholder-msg .big { font-size: 36px; }

  /* ── VALIDATION ERRORS ───────────────────────────────────────────── */
  #validation-errors {
    display: none;
    background: #4A1D26;
    border: 1px solid rgba(255,139,139,0.35);
    border-radius: var(--radius-card);
    padding: 10px 14px;
    margin-bottom: 14px;
  }
  #validation-errors h4 {
    color: var(--danger);
    font-size: 12px;
    font-weight: 700;
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
  }
  #validation-errors ul {
    list-style: none;
    padding: 0;
  }
  #validation-errors ul li {
    font-size: 12px;
    color: #FFB3BA;
    padding: 2px 0;
  }
  #validation-errors ul li::before { content: "✕ "; }

  /* ── VALIDATION WARNINGS ────────────────────────────────────────── */
  #validation-warnings {
    display: none;
    background: #4A3412;
    border: 1px solid rgba(255,210,140,0.35);
    border-radius: var(--radius-card);
    padding: 10px 14px;
    margin-bottom: 14px;
  }
  #validation-warnings h4 {
    color: var(--warn);
    font-size: 12px;
    font-weight: 700;
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
  }
  #validation-warnings ul {
    list-style: none;
    padding: 0;
  }
  #validation-warnings ul li {
    font-size: 12px;
    color: #FFD28C;
    padding: 2px 0;
  }
  #validation-warnings ul li::before { content: "⚠ "; }

  /* ── CUSTOM FUNCTION ACE EDITOR ──────────────────────────────────── */
  .ace-editor-container {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    margin-top: 6px;
  }
  .ace-editor {
    width: 100%;
    height: 120px;
    font-size: 12px;
  }

  /* ── CONDITIONAL SHOW/HIDE ───────────────────────────────────────── */
  .cond-hidden { display: none !important; }
  .hidden { display: none; }

  /* ── SCROLLBAR ───────────────────────────────────────────────────── */
  ::-webkit-scrollbar { width: 6px; height: 6px; }
  ::-webkit-scrollbar-track { background: transparent; }
  ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
  ::-webkit-scrollbar-thumb:hover { background: var(--accent); }

  /* ── TOOLTIPS ────────────────────────────────────────────────────── */
  /* Trigger icon (.tip-icon) and #globalTooltip styling provided by shared.css */

  /* ── TOASTS ──────────────────────────────────────────────────────── */
  .toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--accent2);
    color: #0F1728;
    font-weight: 700;
    font-size: 13px;
    padding: 10px 20px;
    border-radius: var(--radius);
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.25s, transform 0.25s;
    pointer-events: none;
    z-index: 999;
  }
  .toast.show { opacity: 1; transform: translateY(0); }

  /* Separator */
  hr.divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 12px 0;
  }

  .sub-label {
    font-family: var(--mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
    margin-bottom: 8px;
    margin-top: 4px;
  }

  /* ── INFO BOX ────────────────────────────────────────────────────── */
  .info-box {
    background: #132E56;
    border: 1px solid rgba(141,187,255,0.25);
    border-radius: var(--radius);
    padding: 7px 11px;
    font-size: 11.5px;
    color: #A8C9FF;
    line-height: 1.5;
    margin-bottom: 10px;
  }
  .info-box .info-more-toggle {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    color: var(--accent);
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    user-select: none;
    margin-left: 4px;
    text-decoration: none;
    border: none;
    background: none;
    padding: 0;
    font-family: var(--sans);
  }
  .info-box .info-more-toggle:hover { opacity: 0.8; }
  .info-box .info-extra {
    display: none;
    margin-top: 6px;
    border-top: 1px solid rgba(141,187,255,0.15);
    padding-top: 6px;
    font-size: 11px;
    line-height: 1.55;
    color: #8BABD4;
  }
  .info-box .info-extra.open { display: block; }

  /* ── QUICK START — one-click worked examples loaded from samples/ ──── */
  .quick-start-row{display:flex;align-items:center;gap:10px;padding:8px 0 14px;margin-bottom:4px;flex-wrap:wrap}
  .quick-start-label{font-weight:700;font-size:.82rem;color:var(--muted);white-space:nowrap;flex-shrink:0}
  .quick-start-btns{display:flex;gap:6px;flex-wrap:wrap}
  .quick-start-btn{background:var(--input-bg);border:1.5px solid var(--border);border-radius:8px;color:var(--muted);padding:5px 11px;font-size:.78rem;font-weight:600;cursor:pointer;transition:all .15s;white-space:nowrap;font-family:inherit}
  .quick-start-btn:hover{border-color:var(--accent);color:var(--text)}
  .quick-start-btn.active{border-color:var(--accent2);color:var(--text);background:rgba(143,205,189,.15)}
  .quick-start-btn:disabled{opacity:.55;cursor:wait}

  /* ── OUTPUT VAR CONTAINER ────────────────────────────────────────── */
  .output-var-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    margin-bottom: 10px;
    overflow: hidden;
  }
  .output-var-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
  }
  .output-var-header .ov-index {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--muted);
    min-width: 20px;
  }
  .output-var-body { padding: 10px 12px; }

  /* Constraint table */
  #constraint-table { margin-top: 0; }

  /* ── COLUMN HIDING FOR INPUT TABLE ──────────────────────────────── */
  .input-table-hide-step .col-step { display: none; }
  .input-table-hide-bounds .col-lb,
  .input-table-hide-bounds .col-ub  { display: none; }

  /* ── APP FOOTER ──────────────────────────────────────────────── */
  .app-footer {
    border-top: 1px solid var(--border);
    padding: 10px 20px 12px;
    background: var(--bg);
    flex-shrink: 0;
  }
  .app-footer p {
    font-size: 11px;
    color: var(--muted);
    line-height: 1.6;
    margin-bottom: 5px;
  }
  .app-footer a {
    color: var(--accent);
    text-decoration: none;
  }
  .app-footer a:hover { text-decoration: underline; }

  /* ── MOBILE RESPONSIVE ──────────────────────────────────────────── */
  /* ── REFERENCE DATA BADGE ───────────────────────────────────── */
  .ref-badge {
    font-family: var(--mono);
    font-size: 11px;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 6px;
    white-space: nowrap;
    border: 1px solid transparent;
    margin-left: auto;
  }
  .ref-badge.loaded  { background: rgba(143,205,189,0.15); color: var(--accent2); border-color: rgba(143,205,189,0.3); }
  .ref-badge.offline { background: rgba(255,210,140,0.12); color: var(--warn);    border-color: rgba(255,210,140,0.3); }
  .ref-badge.loading { background: rgba(141,187,255,0.10); color: var(--muted);   border-color: rgba(141,187,255,0.2); }

  /* ── COMBOBOX DROPDOWN ───────────────────────────────────────── */
  .pf-combo-wrap {
    position: relative;
    width: 100%;
  }
  .pf-combo-wrap input { width: 100%; }
  /* Dropdown is portalled to <body> — position:fixed set via JS */
  .pf-combo-drop {
    position: fixed;
    z-index: 99999;
    background: #1C2942;
    border: 1px solid var(--accent);
    border-radius: var(--radius);
    box-shadow: 0 8px 32px rgba(0,0,0,0.55);
    max-height: 240px;
    overflow-y: auto;
    font-size: 12px;
    display: none;
    min-width: 200px;   /* always at least 200 px */
  }
  .pf-combo-item {
    display: flex;
    flex-direction: column;
    padding: 5px 10px;
    cursor: pointer;
    border-bottom: 1px solid rgba(44,58,82,0.5);
    gap: 1px;
    transition: background 0.1s;
    white-space: nowrap;
  }
  .pf-combo-item:last-child { border-bottom: none; }
  .pf-combo-item:hover,
  .pf-combo-item.active { background: rgba(141,187,255,0.13); }
  .pf-combo-item .item-var {
    font-family: var(--mono);
    color: var(--accent);
    font-weight: 500;
    font-size: 11.5px;
  }
  .pf-combo-item .item-meta {
    font-size: 10.5px;
    color: var(--muted);
  }
  .pf-combo-item .item-unit { font-size: 10px; color: var(--accent2); }

  @media (max-width: 768px) {
    /* Hard-stop horizontal overflow at the root */
    html {
      overflow-x: hidden;
    }
    body {
      overflow-x: hidden;
      max-width: 100vw;
    }

    /* Header */
    header {
      padding: 8px 12px;
      gap: 6px;
      align-items: flex-start;
    }
    header .logo {
      font-size: 12px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .header-left {
      gap: 4px;
    }
    .header-right {
      gap: 4px;
    }
    .header-nav {
      gap: 6px;
      justify-content: flex-end;
    }
    .header-title {
      font-size: 13px;
      letter-spacing: 0.02em;
    }
    .header-subtitle {
      font-size: 11px;
      line-height: 1.35;
    }
    .back-link {
      font-size: 11px;
      padding: 5px 8px;
    }

    /* Stack layout as a vertical flex column */
    .layout {
      display: flex;
      flex-direction: column;
      height: auto;
      overflow: visible;
    }
    .pane-resizer { display: none; }

    /* Left pane: natural height, clamp width */
    .left-pane {
      position: static;
      top: auto;
      align-self: auto;
      width: 100%;
      max-width: 100%;
      box-sizing: border-box;
      overflow-x: hidden;
      overflow-y: visible;
      height: auto;
      max-height: none;
      border-right: none;
      border-bottom: 1px solid var(--border);
      padding: 12px 12px 20px;
    }

    /* Clip any child overflows inside left pane */
    .section-card, .section-body { overflow-x: hidden; }

    /* Right pane: fixed height for usable code view */
    .right-pane {
      position: static;
      top: auto;
      align-self: auto;
      width: 100%;
      max-width: 100%;
      box-sizing: border-box;
      height: 70vh;
      max-height: none;
      min-height: 360px;
    }

    /* Toolbar: wrap to multiple lines */
    .right-toolbar {
      flex-wrap: wrap;
      gap: 6px;
      padding: 8px 10px;
      top: 0;
    }
    .right-toolbar .pane-title {
      width: 100%;
      margin-right: 0;
    }

    /* Forms: single column */
    .form-row {
      grid-template-columns: 1fr;
    }
    .form-row label {
      padding-top: 0;
      padding-bottom: 2px;
    }

    /* Tables scroll inside wrapper, never push page */
    .dyn-table-wrapper {
      overflow-x: auto;
      max-width: 100%;
    }
    .dyn-table { min-width: 280px; }
    .dyn-table td input,
    .dyn-table td select { min-width: 40px; }

    /* Output var header wraps */
    .output-var-header {
      flex-wrap: wrap;
      gap: 4px;
    }
    .output-var-header select { max-width: 140px; }
    .output-var-header input[type="text"] { min-width: 60px; }

    /* Long text wraps */
    .info-box, code { word-break: break-word; }
    .btn-row { flex-wrap: wrap; }
  }