/* Only the Cross-Section Sketcher; shared card and shell styles are inherited. */
#sectionVertices{width:100%;box-sizing:border-box;font-family:monospace;resize:vertical;padding:12px;margin:8px 0}
.section-actions{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}
.section-actions button{padding:9px 13px;border:1px solid var(--tl-line);border-radius:8px;background:var(--tl-panel);color:var(--tl-text);cursor:pointer}
.section-actions button:disabled{opacity:.6;cursor:wait}
#sectionSketch{display:block;width:100%;background:var(--aw-surface,#fff);border:1px solid var(--tl-line);border-radius:10px;touch-action:manipulation;cursor:crosshair}
#sectionError{color:var(--tl-red,#c33)}
#sectionResults td{padding:8px 12px}
.section-field{margin:0 0 14px}
.section-field select,.section-field input{display:block;width:100%;box-sizing:border-box;margin-top:7px;padding:10px;border:1px solid var(--tl-line);border-radius:7px;background:var(--tl-panel);color:var(--tl-text);font:inherit}
#sectionWallOptions[hidden]{display:none}
#sectionSolidInputs[hidden],#sectionSketchTools[hidden]{display:none}
.section-actions button[aria-pressed="true"]{border-color:var(--tl-cyan);box-shadow:inset 0 0 0 1px var(--tl-cyan)}
.section-point-entry{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr) auto;gap:8px;align-items:end;margin-bottom:16px}
.section-point-entry input,.section-edit-table input{width:100%;min-width:0;box-sizing:border-box;padding:8px;border:1px solid var(--tl-line);border-radius:5px;background:var(--tl-panel);color:var(--tl-text);font:inherit}
.section-point-entry button,.section-edit-table button{padding:8px;border:1px solid var(--tl-line);border-radius:5px;background:var(--tl-panel);color:var(--tl-text);cursor:pointer}
.section-table-scroll{max-height:240px;overflow:auto;margin:16px 0}
.section-edit-table{table-layout:fixed}
.section-edit-table caption{text-align:left;font-weight:700;padding:8px 0;color:var(--aw-text,var(--tl-text))}
.section-edit-table input{padding:5px}
.section-edit-table button{font-size:10px;padding:5px 2px;max-width:100%}
.section-wall,.section-node{cursor:pointer}
.section-wall:focus-visible,.section-node:focus-visible{outline:2px solid var(--tl-cyan)}
#sectionSketch.section-connecting{cursor:default}
#sectionEdgeDialog{width:min(380px,calc(100vw - 48px));box-sizing:border-box;border:1px solid var(--tl-line);border-radius:12px;padding:24px;background:var(--aw-surface,var(--tl-panel));color:var(--aw-text,var(--tl-text))}
#sectionEdgeDialog::backdrop{background:rgba(0,0,0,.55)}
#sectionEdgeDialog h2{font-size:18px;margin:0 0 20px}
#sectionEdgeError{color:var(--tl-red)}
@media(max-width:650px){.section-table-scroll .section-edit-table td,.section-table-scroll .section-edit-table th{padding:6px 3px!important}.section-point-entry{gap:5px}}
.section-member-grid,.section-load-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.section-load{border:1px solid var(--tl-line);border-radius:10px;padding:14px;margin:14px 0}
.section-load-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}
.section-load-heading h3{margin:0;font-size:16px}
.section-load-heading .section-actions{margin:0 0 10px}
.section-load-grid label,.section-member-grid label{font-size:13px}
#sectionStressOutput[hidden]{display:none}
.section-stress-summary{display:grid;grid-template-columns:repeat(auto-fit,minmax(165px,1fr));gap:10px;margin:16px 0}
.section-stress-metric{padding:12px;border:1px solid var(--tl-line);border-radius:8px;overflow-wrap:anywhere}
.section-stress-metric span{display:block;font-size:12px;margin-bottom:6px;color:var(--aw-muted,var(--tl-muted))}
.section-stress-metric strong{font-size:15px}
.section-stress-plots{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.section-stress-plot{min-width:0;border:1px solid var(--tl-line);border-radius:10px;padding:14px}
.section-stress-plot h3{font-size:17px;margin:0 0 12px}
.section-stress-plot svg{display:block;width:100%;height:auto;background:var(--aw-surface,#fff);border-radius:6px}
.section-stress-plot svg text{fill:var(--aw-text,var(--tl-text));font-family:inherit;font-size:11px}
.section-stress-plot .section-plot-legend{height:9px;border-radius:4px;margin:10px 0 5px}
.section-plot-range{display:flex;justify-content:space-between;gap:8px;font-size:12px}
.section-stress-plot p{font-size:12px;overflow-wrap:anywhere}
#sectionStressNotes{padding-left:20px}
#sectionStressNotes li{margin:6px 0}
@media(max-width:900px){.section-member-grid,.section-load-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:650px){.section-stress-plots{grid-template-columns:minmax(0,1fr)}.section-stress-summary{grid-template-columns:repeat(2,minmax(0,1fr))}.section-stress-plot{padding:10px}}
.beam-parameter-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
#beamSectionSketch,#beamSketch,#beamDiagram{display:block;width:100%;height:auto;background:var(--aw-surface,#fff);border:1px solid var(--tl-line);border-radius:8px}
#beamSectionSketch text,#beamSketch text,#beamDiagram text{fill:var(--aw-text,var(--tl-text));font-family:inherit;font-size:13px}
#beamError{color:var(--tl-red,#c33)}
#beamResults[hidden]{display:none}
#beamDiagram{cursor:crosshair}
#beamNotes{padding-left:20px}
/* Compact cross-section workspace. */
.section-disclosure{margin:12px 0;border-top:1px solid var(--aw-border,var(--tl-line));padding-top:10px}
.section-disclosure>summary{cursor:pointer;font-weight:600;padding:5px 0;color:var(--aw-text,var(--tl-text))}
.section-toggle{display:inline-flex;align-items:center;gap:7px;cursor:pointer;margin-left:auto;font-size:12px;color:var(--aw-text,var(--tl-text))}
.section-toggle input{width:auto!important;margin:0!important;accent-color:#12baf0}
.section-load-list-heading{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap}
.section-load-list-heading .section-actions{margin:5px 0}
.section-load-row{display:flex;gap:8px;align-items:center;padding:8px 0;border-bottom:1px solid var(--aw-border,var(--tl-line))}
.section-load-row button{border:1px solid var(--aw-border,var(--tl-line));border-radius:7px;background:var(--aw-surface,var(--tl-panel));color:var(--aw-text,var(--tl-text));padding:8px;cursor:pointer}
.section-load-row .section-load-edit{flex:1;min-width:0;text-align:left}
.section-load-edit strong,.section-load-edit span{display:block}
.section-load-edit span{font-size:12px;color:var(--aw-muted);margin-top:4px;overflow-wrap:anywhere}
.section-load-marker{cursor:pointer}
.section-load-marker:focus-visible{outline:2px solid #a36ee0}
.section-thickness-label{fill:var(--aw-text,var(--tl-text));font-size:12px;paint-order:stroke;stroke:var(--aw-surface,#fff);stroke-width:4px;stroke-linejoin:round}
#sectionLoadDialog{width:min(650px,calc(100vw - 32px));max-height:calc(100dvh - 32px);overflow:auto;box-sizing:border-box;border:1px solid var(--aw-border,var(--tl-line));border-radius:12px;padding:22px;background:var(--aw-surface,var(--tl-panel));color:var(--aw-text,var(--tl-text))}
#sectionLoadDialog::backdrop{background:rgba(0,0,0,.45)}
#sectionLoadDialog h2{font-size:20px;margin:0 0 12px}
#sectionLoadDialog .section-load-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 16px}
#sectionLoadDialog .section-field{margin:0}
#sectionLoadDialog input{background:var(--aw-input,var(--aw-surface));color:var(--aw-text,var(--tl-text));border-color:var(--aw-border,var(--tl-line))}
#sectionLoadError{color:var(--tl-red,#c33)}
#sectionStressPlots[data-single-plot]{display:block}
#sectionStressPlots[data-single-plot] .section-stress-plot{border:0;padding:0}
#sectionStressPlots[data-single-plot] svg{max-height:460px}
.section-result-controls{display:grid;grid-template-columns:2fr 1fr;gap:12px}
.section-result-controls .section-field{min-width:0}
.section-analyzer [hidden],.section-stress-plot svg[hidden]{display:none!important}
@media(max-width:650px){.section-result-controls{grid-template-columns:1fr}.section-toggle{margin-left:0}.section-load-list-heading .section-actions button{font-size:11px}.section-analyzer #sectionSketchTools .section-actions{gap:6px}}
.section-direction { cursor:pointer; }
.section-direction:focus-visible rect,.section-direction:hover rect { stroke:var(--plot-accent);stroke-width:2; }
.section-direction:focus-visible { outline:none; }
#sectionStressLine0[viewBox="0 0 640 460"] { cursor:grab;min-height:300px; }
#sectionStressLine0[viewBox="0 0 640 460"]:active { cursor:grabbing; }

#sectionSketch { touch-action:none; }
#sectionSketch.section-panning,#sectionSketch.section-panning * { cursor:grab; }
#sectionSketch.section-panning:active { cursor:grabbing; }