/* Browser-only numerical calculator. Scoped to avoid changing the exam surface. */
.exam-toolbar-tools{display:flex;align-items:center;gap:16px}
.exam-workspace .calculator-toggle{color:var(--brand-primary);background:#eef7f7;border-color:#b9d7d9;white-space:nowrap;min-height:36px;padding:7px 10px;font-size:12px;gap:7px}
.exam-workspace .calculator-toggle[aria-expanded=true]{background:var(--brand-accent);color:#fff;border-color:var(--brand-accent)}
.graphing-calculator{--calc-ink:#153347;--calc-muted:#526878;--calc-line:#d2dfe5;position:fixed;z-index:50;display:flex;flex-direction:column;width:500px;border:1px solid #8cacb8;border-radius:12px;background:#fff;color:var(--calc-ink);box-shadow:0 14px 50px #0b25344d;font-size:13px;line-height:1.45;overflow:hidden;isolation:isolate}
.graphing-calculator[hidden],.graphing-calculator [hidden]{display:none!important}
.graphing-calculator button{font-size:12px;border:1px solid var(--calc-line);border-radius:6px;min-height:32px;background:#f4f8fa;color:var(--calc-ink);padding:4px 9px;line-height:1.35;box-shadow:none}
.graphing-calculator button:hover{background:#e3f2f2}
.graphing-calculator :is(button,input,select,summary,svg):focus-visible{outline:3px solid var(--brand-highlight);outline-offset:-3px}
.graphing-calculator .calc-header{display:flex;align-items:center;gap:4px;background:var(--brand-primary);color:#fff;padding:5px 7px;flex-shrink:0;border-bottom:3px solid var(--brand-accent)}
.graphing-calculator .calc-drag{display:flex;align-items:center;flex:1;min-width:0;gap:8px;border:0;background:transparent;color:#fff;text-align:left;cursor:grab;touch-action:none;user-select:none;padding:6px 3px}
.graphing-calculator .calc-drag>span:last-child{display:flex;flex-direction:column;gap:2px;min-width:0}
.graphing-calculator .calc-drag strong{font-size:15px;letter-spacing:-.15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.graphing-calculator .calc-drag small{font-size:10px;font-weight:400;color:#cfdee6}
.graphing-calculator .calc-grip{font-size:25px;color:#a1c4d1;line-height:1}
.graphing-calculator .calc-header-button{display:inline-flex;align-items:center;justify-content:center;color:#fff;background:transparent;border:0;width:33px;min-width:33px;height:33px;font-size:21px;padding:0}
.graphing-calculator .calc-header-button:hover{background:#ffffff22}
.graphing-calculator.calc-dragging .calc-drag{cursor:grabbing}
.calc-body{padding:11px 13px 8px;overflow:auto;overscroll-behavior:contain;min-height:0}
.calc-settings{display:flex;align-items:center;gap:7px;margin-bottom:9px;flex-wrap:wrap}
.graphing-calculator .calc-settings label{font-size:11px;margin:0 0 0 auto;font-weight:500}
.calc-badge{font-size:9px;color:#3f6772;letter-spacing:.7px;font-weight:700;white-space:nowrap}
.graphing-calculator .calc-settings select{width:auto;min-width:0;padding:4px 3px;color:var(--calc-ink);background:#f4f8fa;border:1px solid var(--calc-line);border-radius:6px;font-size:12px;min-height:32px;margin:0}
.graphing-calculator .calc-expression{display:flex;align-items:flex-start;gap:8px;margin:5px 0}
.graphing-calculator .calc-expression>label{width:25px;flex-shrink:0;border-radius:5px;padding:7px 0;font-size:15px;font-weight:650;text-align:center;margin:0;color:var(--calc-series)}
.graphing-calculator .calc-expression>div{flex:1;min-width:0}
.graphing-calculator .calc-expression input{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:14px;line-height:1.3;min-height:34px;width:100%;margin:0;padding:7px 10px;border:1px solid var(--calc-line);border-left:3px solid var(--calc-series);border-radius:5px;color:#143348;background:#fff;box-shadow:none}
.graphing-calculator input::placeholder{color:#637781;opacity:1;font-size:12px}
.graphing-calculator input[aria-invalid=true]{border-color:#aa3939}
.calc-result{font-size:11px;font-variant-numeric:tabular-nums;color:var(--calc-muted);display:block;overflow-wrap:anywhere;padding:1px 3px;min-height:0}
.calc-result:empty{display:none}
.graphing-calculator .calc-error{color:#a02a2a;font-size:11px;margin:4px 0;overflow-wrap:anywhere}
.calc-tabs{display:flex;gap:4px;border-bottom:1px solid var(--calc-line);margin:12px 0 7px;padding-bottom:5px}
.graphing-calculator .calc-tabs button{flex:1;background:transparent;border:0;border-radius:5px;color:var(--calc-muted);font-weight:600}
.graphing-calculator .calc-tabs [aria-selected=true]{color:#fff;background:var(--brand-accent)}
#calc-plot{width:100%;height:auto;display:block;cursor:crosshair;background:#fff;border:1px solid #e5ebee;border-radius:6px;touch-action:manipulation}
#calc-plot text{fill:#4c6370;font:10px ui-sans-serif,system-ui,sans-serif}
.calc-plot-background{fill:#fcfefe}
.calc-grid-line{stroke:#dce7eb;stroke-width:1;shape-rendering:crispEdges}
.calc-axis-line{stroke:#7b949e;stroke-width:1.25}
.calc-series-0{--calc-series:#087e8b}.calc-series-1{--calc-series:#9b4a99}.calc-series-2{--calc-series:#b26513}
.calc-curve{fill:none;stroke:var(--calc-series);stroke-width:2;stroke-linejoin:round;stroke-linecap:round}
.calc-trace-line{stroke:#405763;stroke-dasharray:3 3;stroke-width:1}.calc-dot{fill:var(--calc-series);stroke:#fff;stroke-width:1}
.calc-trace{font-size:10px;color:var(--calc-muted);line-height:1.45;margin:6px 0;min-height:15px;overflow-wrap:anywhere;font-variant-numeric:tabular-nums}
.calc-graph-tools{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.graphing-calculator .calc-graph-tools button{min-width:32px;padding:4px 6px}.graphing-calculator .calc-graph-tools button:last-child{margin-left:auto}
.calc-window{margin:8px 0 0;font-size:11px;color:var(--calc-muted)}
.calc-window summary{padding:4px 0}.calc-bounds{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;margin:5px 0}
.graphing-calculator .calc-bounds label,.graphing-calculator .calc-table-controls label{display:flex;flex-direction:column;font-size:11px;margin:0;color:var(--calc-muted);font-weight:500;min-width:0}
.graphing-calculator .calc-bounds input,.graphing-calculator .calc-table-controls input{width:100%;min-width:0;background:#fff;color:var(--calc-ink);border:1px solid var(--calc-line);border-radius:4px;padding:5px;font-size:12px;margin:3px 0 0;min-height:32px;box-shadow:none}
.calc-table-controls{display:flex;align-items:flex-end;gap:10px;margin:10px 0}.calc-table-controls label{flex:1}.calc-table{overflow:auto;max-height:240px}
.graphing-calculator .calc-table table{font-variant-numeric:tabular-nums;width:100%;border-collapse:collapse}
.graphing-calculator .calc-table :is(th,td){padding:7px 6px;font-size:12px;border-bottom:1px solid var(--calc-line);color:var(--calc-ink);letter-spacing:0;font-weight:400}
.graphing-calculator .calc-table thead th{background:#eaf3f5;font-weight:650}.graphing-calculator .calc-table tbody th{font-weight:650}
.calc-keypad{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:5px;margin:12px 0}
.graphing-calculator .calc-keypad button{min-height:36px;font-size:13px;padding:4px 3px}
.graphing-calculator #calc-clear-line{grid-column:span 2;font-size:12px}.graphing-calculator .calc-keypad .calc-equals{grid-column:span 3;color:#fff;background:var(--brand-accent);font-weight:600}
.calc-help{border-top:1px solid var(--calc-line);padding-top:6px;margin:10px 0 0;font-size:11px;color:var(--calc-muted)}
.calc-help summary{padding:3px 0}.calc-help p{margin:8px 0;line-height:1.6}.calc-help code{font-size:11px;color:var(--calc-ink)}
.calc-footer{font-size:9px;margin:6px 0 0;color:var(--calc-muted);text-align:center}
@media(max-width:1050px){.exam-toolbar-tools{gap:10px}.exam-toolbar #calculator-toggle span{display:none}.exam-sticky-controls .calculator-toggle{font-size:11px}}
@media(max-width:720px){.exam-workspace .calculator-toggle{padding:7px;min-width:34px;gap:5px}.exam-toolbar-tools{gap:8px}.exam-toolbar{flex-wrap:wrap}.exam-toolbar>div:first-child{flex:1}.exam-workspace .exam-sticky-controls{gap:9px}.graphing-calculator .calc-drag strong{font-size:14px}.calc-body{padding:9px}.calc-badge{font-size:8px;letter-spacing:.3px}.graphing-calculator .calc-settings label{font-size:10px}.graphing-calculator .calc-settings select{font-size:11px}.calc-settings{gap:4px}.graphing-calculator .calc-expression input{font-size:16px}.graphing-calculator .calc-keypad button{min-height:38px}.graphing-calculator .calc-expression{gap:4px}.graphing-calculator .calc-drag small{font-size:9px}}
@media(max-width:370px){.exam-sticky-controls .calculator-toggle span{display:none}.calc-badge{display:none}.graphing-calculator .calc-settings label{margin-left:0}.graphing-calculator #calc-clear{margin-left:auto}}
@media print{.graphing-calculator,.calculator-toggle{display:none!important}}
/* Keep the added tool and the existing question map inside narrow test canvases. */
.exam-paper,.exam-aside,.exam-toolbar>div:first-child{min-width:0}
@media(max-width:720px){.exam-layout{grid-template-columns:minmax(0,1fr)}.question-map{grid-template-columns:repeat(9,minmax(0,1fr))}}
@media(max-width:370px){.question-map{grid-template-columns:repeat(7,minmax(0,1fr))}}
.graphing-calculator .calc-drag:hover{background:#ffffff12;color:#fff}