.calculator-shell{width:min(1180px,100%);margin:0 auto;padding:42px 24px 68px;min-height:calc(100dvh - 112px)}
.intro{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:28px}.intro h1{font-size:clamp(27px,4vw,39px);letter-spacing:-.045em;margin:6px 0 4px}.intro p{color:var(--muted);margin:0}.intro-actions{display:flex;gap:8px;flex-wrap:wrap}.intro-actions .tool-button{white-space:nowrap}
.calculator{border:1px solid var(--line);border-radius:10px;background:var(--panel);overflow:hidden;box-shadow:0 20px 60px #0001}.column-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(240px,34%);padding:13px 30px 13px 65px;background:var(--portfolio-elevated);border-bottom:1px solid var(--line);font-size:11px;text-transform:uppercase;letter-spacing:.11em;color:var(--muted)}.column-head small{font-size:10px;letter-spacing:0;text-transform:none;opacity:.75;margin-left:6px}
.expression-row{display:grid;grid-template-columns:56px minmax(0,1fr) minmax(240px,34%);min-height:74px;border-bottom:1px solid var(--line);position:relative}.expression-row:focus-within{background:var(--portfolio-accent-soft)}.expression-row.drop-before:before,.expression-row.drop-after:after{content:'';position:absolute;left:0;right:0;height:3px;background:var(--accent);z-index:3}.expression-row.drop-before:before{top:0}.expression-row.drop-after:after{bottom:0}.expression-row.dragging{opacity:.45}
.row-controls{display:flex;align-items:center;gap:5px;padding-left:8px}.drag-handle{width:25px;height:30px;padding:0;border:0;background:transparent;font-size:19px;line-height:1;color:var(--muted);cursor:grab;user-select:none;touch-action:none}.drag-handle:disabled{opacity:.2;cursor:default}.drag-handle:active{cursor:grabbing}.row-number{color:var(--muted);font:11px ui-monospace,monospace}
.source-cell{min-width:0;display:flex;align-items:center;padding:10px 14px 10px 0;overflow-x:auto}.formula-editor{display:block;width:100%;min-width:180px;min-height:54px;margin:0;padding:8px;border:1px solid transparent;border-radius:5px;background:transparent;color:var(--text);font-size:26px;line-height:1.4;--caret-color:var(--accent);--selection-background-color:var(--portfolio-accent-border)}.formula-editor:focus-within{outline:none;border-color:var(--portfolio-accent-border);background:var(--panel2)}.formula-editor::part(menu-toggle){display:none}.formula-editor::part(virtual-keyboard-toggle){color:var(--muted)}@media not (pointer:coarse){.formula-editor::part(virtual-keyboard-toggle){display:none}}
.result-cell{display:flex;align-items:center;justify-content:flex-end;gap:3px;min-width:0;padding:10px 28px 10px 8px;border-left:1px solid var(--line);text-align:right;overflow:hidden}.result-value{display:inline-block!important;width:auto;min-width:0;max-width:calc(100% - 28px);margin:0;padding:0!important;border:0!important;background:transparent!important;color:var(--accent);font-size:26px;line-height:1.4;pointer-events:none}.result-value::part(menu-toggle),.result-value::part(virtual-keyboard-toggle){display:none}.unit-picker{position:relative;flex:none;display:grid;place-items:center;width:26px;height:28px;border:1px solid var(--line2);border-radius:5px;color:var(--muted)}.unit-picker::after{content:'';width:7px;height:7px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:translateY(-2px) rotate(45deg);pointer-events:none}.unit-picker:hover{background:var(--hover);color:var(--accent)}.unit-select{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:pointer}.unit-select option{font-size:13px;color:var(--text);background:var(--panel)}.row-error{display:none;color:#e49b9b;font-size:12px;line-height:1.4;text-align:left;overflow-wrap:anywhere}.has-error .result-cell{justify-content:flex-start}.has-error .row-error{display:block}
.row-actions{position:absolute;top:4px;right:4px;z-index:2}.row-action{width:24px;height:24px;border:0;border-radius:4px;background:transparent;color:var(--muted);font-size:20px;line-height:1}.row-action:hover{background:var(--hover);color:#e49b9b}.notebook-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 18px;background:var(--portfolio-elevated);font-size:11px;color:var(--muted)}.notebook-actions #status{white-space:nowrap}
.tips{display:flex;justify-content:space-between;gap:30px;color:var(--muted);font-size:12px;line-height:1.7}.tips p{max-width:510px}.tips strong{color:var(--text);font-weight:600}.tips code{font:12px ui-monospace,monospace;color:var(--accent);background:var(--portfolio-accent-soft);padding:2px 4px;border-radius:3px}
@media(max-width:750px){.calculator-shell{padding:26px 14px 50px}.intro{align-items:start;flex-direction:column}.column-head{grid-template-columns:minmax(0,1fr) minmax(125px,38%);padding-left:43px;padding-right:22px}.column-head small{display:none}.expression-row{grid-template-columns:38px minmax(0,1fr) minmax(125px,38%);min-height:76px}.row-controls{padding-left:3px;gap:1px;flex-direction:column;justify-content:center}.drag-handle{font-size:16px}.row-number{font-size:9px}.source-cell{padding-right:3px}.formula-editor{min-width:100px;font-size:20px;padding:5px 1px}.result-cell{padding:5px 22px 5px 3px;gap:1px}.result-value{font-size:20px;max-width:calc(100% - 20px)}.unit-picker{width:19px;font-size:15px}.row-action{width:19px;height:19px;font-size:16px}.notebook-actions{align-items:start}.tips{flex-direction:column;gap:0}}
@media(max-width:600px){.column-head{display:none}.expression-row{grid-template-columns:38px minmax(0,1fr);grid-template-rows:auto auto}.row-controls{grid-column:1;grid-row:1/3}.source-cell{grid-column:2;grid-row:1;padding-right:23px;min-height:60px}.result-cell{grid-column:2;grid-row:2;min-height:38px;padding:0 28px 11px 4px;border-left:0;overflow:visible}.result-value{max-width:calc(100% - 28px)}.is-empty .result-cell{display:none}.has-error .result-cell{justify-content:flex-start}.notebook-actions{flex-wrap:wrap}}