/* NumberCals — design tokens. Three themes keyed off . Everything reads these variables, so switching data-theme recolours the whole site, including canvas graphs (which read them via skin.js/NCSkin). */ :root, [data-theme="sepia"]{ --paper:#f7f3eb; /* page ground */ --paper-2:#f3ede0; /* panels */ --paper-3:#fdfaf2; /* raised cards */ --ink:#1c1815; /* primary text */ --ink-soft:#7a6f60; /* secondary text */ --accent:#b34a23; /* burnt sienna */ --yes:#2f7a52; /* green confirm */ --rule:#e3d3b1; /* hairlines */ } [data-theme="light"]{ --paper:#ffffff; --paper-2:#f4f5f7; --paper-3:#ffffff; --ink:#15181c; --ink-soft:#5f6b7a; --accent:#b34a23; --yes:#2f7a52; --rule:#dfe3e8; } [data-theme="dark"]{ --paper:#16140f; --paper-2:#201d17; --paper-3:#252119; --ink:#f2ece0; --ink-soft:#a99e8c; --accent:#e07a4e; /* lifted sienna for contrast on dark */ --yes:#5fae84; --rule:#3a342a; } :root{ --mono:'JetBrains Mono','IBM Plex Mono',ui-monospace,monospace; --serif:'Crimson Pro','EB Garamond',Georgia,serif; --sans:'Manrope','Inter',system-ui,sans-serif; --maxw:1100px; --sidebar-w:230px; } *{box-sizing:border-box} body{ margin:0;background:var(--paper);color:var(--ink); font-family:var(--sans);line-height:1.55; -webkit-font-smoothing:antialiased; transition:none; /* enabled after first paint via body.nc-anim (see below) */ } a{color:var(--accent);text-decoration:none} a:hover{text-decoration:underline} /* version badge — inline in the header (no longer floating/overlapping) */ .version-badge{ font-family:var(--mono);font-size:11px;color:var(--ink-soft); background:var(--paper-3);border:1px solid var(--rule); padding:3px 8px;border-radius:2px;white-space:nowrap;flex:0 0 auto; } /* header */ .site-header{ display:flex;align-items:center;gap:14px;flex-wrap:wrap; padding:14px 24px;border-bottom:1px solid var(--rule); position:sticky;top:0;background:var(--paper);z-index:30; } .brand{font-family:var(--mono);font-weight:700;font-size:20px;color:var(--ink)} .brand-slash{color:var(--accent)} .nav-toggle{display:none;font-size:20px;background:none;border:none;color:var(--ink);cursor:pointer} /* theme switch */ .theme-switch{display:flex;gap:4px;margin-left:8px} .theme-switch button{font-size:14px;width:30px;height:30px;line-height:1; background:var(--paper-3);border:1px solid var(--rule);border-radius:3px; color:var(--ink-soft);cursor:pointer} .theme-switch button:hover{color:var(--accent);border-color:var(--accent)} .theme-switch button.active{background:var(--accent);color:var(--paper-3);border-color:var(--accent)} /* two-column layout: sidebar + content */ .layout{display:flex;align-items:flex-start;max-width:var(--maxw);margin:0 auto} .sidebar{flex:0 0 var(--sidebar-w);width:var(--sidebar-w);padding:26px 14px 40px; position:sticky;top:63px;align-self:flex-start;z-index:20} .side-group{margin-bottom:24px} .side-label{font-family:var(--mono);font-size:11px;letter-spacing:.1em; text-transform:uppercase;color:var(--ink-soft);margin:0 8px 8px} .side-link{display:block;font-size:15px;padding:7px 10px;border-radius:4px; color:var(--ink);margin-bottom:2px} .side-link:hover{background:var(--paper-2);color:var(--accent);text-decoration:none} /* layout */ .page{flex:1;min-width:0;padding:30px 28px 60px} .eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.08em; text-transform:uppercase;color:var(--accent)} h1{font-family:var(--serif);font-weight:700;font-size:40px;line-height:1.1;margin:.2em 0} h2{font-family:var(--serif);font-weight:600;font-size:26px;margin:1.4em 0 .4em} .lede{font-size:18px;color:var(--ink-soft);max-width:60ch} /* section grid */ .section-grid{display:grid;gap:16px; grid-template-columns:repeat(auto-fill,minmax(220px,1fr));margin-top:26px} .section-tile{ display:block;background:var(--paper-3);border:1px solid var(--rule); border-radius:4px;padding:18px;transition:transform .12s,box-shadow .12s; } .section-tile:hover{transform:translateY(-2px); box-shadow:0 6px 18px rgba(28,24,21,.08);text-decoration:none} .section-tile .glyph{font-size:24px} .section-tile .name{font-family:var(--mono);font-weight:600;color:var(--ink); margin-top:8px;display:flex;justify-content:space-between} .section-tile .blurb{color:var(--ink-soft);font-size:14px;margin-top:4px} .count-pill{font-family:var(--mono);font-size:12px;color:var(--ink-soft)} /* calc + sub lists */ .sub-block{margin-top:22px} .sub-block h3{font-family:var(--mono);font-size:14px;letter-spacing:.04em; text-transform:uppercase;color:var(--ink-soft);border-bottom:1px solid var(--rule); padding-bottom:6px} .calc-row{display:flex;justify-content:space-between;align-items:baseline; padding:9px 0;border-bottom:1px dotted var(--rule)} .calc-row .formula{font-family:var(--mono);font-size:13px;color:var(--ink-soft)} /* scientific calculator */ .calc-shell{background:var(--paper-3);border:1px solid var(--rule); border-radius:6px;padding:18px;max-width:420px} .calc-display{font-family:var(--mono);font-size:28px;font-weight:700;text-align:right; color:var(--ink);background:var(--paper-2);border:1px solid var(--rule);border-radius:3px; padding:14px 12px;min-height:56px;word-break:break-all} .calc-mode{display:flex;gap:8px;margin:10px 0;font-family:var(--mono);font-size:12px} .calc-mode button{flex:0 0 auto} /* Fixed keypad area: scientific (6 rows) sets the height; standard fills the same box so toggling modes never reflows the content below. */ .keys{display:grid;gap:8px;margin-top:10px;min-height:312px;align-content:start} .keys.scientific{grid-template-columns:repeat(6,1fr)} .keys.standard{grid-template-columns:repeat(4,1fr)} .keys button{font-family:var(--mono);font-size:16px;font-weight:600;padding:12px 0; background:var(--paper);border:1px solid var(--rule);border-radius:3px; color:var(--ink);cursor:pointer;transition:background .1s} .keys button:hover{background:var(--paper-2)} .keys button.op{color:var(--accent);font-weight:700} .keys button.eq{background:var(--accent);color:var(--paper-3);border-color:var(--accent);font-weight:700} /* viz panel */ .viz-panel{margin-top:24px;background:var(--paper-3);border:1px solid var(--rule); border-radius:6px;padding:20px} .viz-inputs{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:16px} .viz-inputs label{font-family:var(--mono);font-size:13px;color:var(--ink-soft); display:flex;flex-direction:column;gap:4px} .viz-inputs input{font-family:var(--mono);padding:6px 8px;width:120px; border:1px solid var(--rule);border-radius:3px;background:var(--paper)} .viz-out{font-family:var(--mono);font-size:14px} .viz-out b{color:var(--accent)} canvas{max-width:100%;background:var(--paper-2);border:1px solid var(--rule);border-radius:3px} /* footer */ .site-footer{border-top:1px solid var(--rule);max-width:var(--maxw); margin:40px auto 0;padding:18px 20px 40px} .disclaimer{font-family:var(--mono);font-size:12px;color:var(--ink-soft);margin:0 0 6px} .copyright{font-size:12px;color:var(--ink-soft);margin:0} button{cursor:pointer} /* ad slot — sits inside the skin, never on top of it */ .ad-slot{margin:28px 0;padding:14px;background:var(--paper-2); border:1px dashed var(--rule);border-radius:4px;text-align:center} .ad-label{display:block;font-family:var(--mono);font-size:10px; letter-spacing:.12em;text-transform:uppercase;color:var(--ink-soft); margin-bottom:8px} /* standalone primary button (e.g. generic viz "compute") */ button.eq{font-family:var(--mono);padding:10px 20px;border-radius:3px; border:none;background:var(--accent);color:var(--paper-3)} button.eq:hover{filter:brightness(1.08)} /* scholar attribution on calc pages */ .scholar-link{font-size:14px;color:var(--ink-soft);margin:6px 0 0} .scholar-link .count-pill{margin-left:8px} /* --- scholars A–Z directory --- */ .az-index{display:flex;flex-wrap:wrap;gap:6px;margin:18px 0 26px} .az-index a{font-family:var(--mono);font-size:13px;padding:4px 9px; border:1px solid var(--rule);border-radius:3px;color:var(--ink-soft)} .az-index a:hover{color:var(--accent);border-color:var(--accent);text-decoration:none} .az-chip.active{background:var(--accent);color:var(--paper-3);border-color:var(--accent)} .az-group{margin:22px 0} .az-letter{font-family:var(--mono);font-size:20px;color:var(--accent); border-bottom:2px solid var(--rule);padding-bottom:4px;margin:0 0 6px} .az-row{display:flex;justify-content:space-between;align-items:baseline; padding:10px 4px;border-bottom:1px dotted var(--rule)} .az-row:hover{background:var(--paper-2);text-decoration:none} .az-name{font-family:var(--serif);font-size:18px;color:var(--ink)} .az-meta{font-family:var(--mono);font-size:12px;color:var(--ink-soft)} .citation{font-family:var(--mono);font-size:13px;color:var(--ink-soft);margin:10px 0} /* --- calculator: stable height handled by .keys min-height (see above) --- */ .keys{transition:opacity .12s ease} /* --- enlarged, clearer search box --- */ .nav-search{display:flex;align-items:stretch;margin-left:auto;flex:1 1 280px;max-width:480px;min-width:220px} .nav-search input{flex:1;font-family:var(--mono);font-size:14px;padding:9px 12px; background:var(--paper-3);border:1px solid var(--rule);border-right:none; border-radius:3px 0 0 3px;color:var(--ink)} .nav-search input:focus{outline:none;border-color:var(--accent)} .nav-search button{font-size:16px;padding:0 14px;background:var(--accent); color:var(--paper-3);border:1px solid var(--accent);border-radius:0 3px 3px 0;cursor:pointer} .nav-search button:hover{filter:brightness(1.08)} @media (max-width:640px){.nav-search{min-width:100%;margin-top:10px}} /* --- search results page box --- */ .search-page-box{display:flex;gap:0;max-width:560px;margin:18px 0 26px} .search-page-box input{flex:1;font-family:var(--mono);font-size:16px;padding:12px 14px; background:var(--paper-3);border:1px solid var(--rule);border-right:none; border-radius:4px 0 0 4px;color:var(--ink)} .search-page-box input:focus{outline:none;border-color:var(--accent)} .search-page-box button{font-family:var(--mono);font-size:15px;padding:0 22px; background:var(--accent);color:var(--paper-3);border:1px solid var(--accent); border-radius:0 4px 4px 0;cursor:pointer} /* --- footer links --- */ .footer-links{display:flex;flex-wrap:wrap;gap:16px;margin:10px 0} .footer-links a{font-family:var(--mono);font-size:13px;color:var(--ink-soft)} .footer-links a:hover{color:var(--accent)} /* --- contact card --- */ .contact-card{background:var(--paper-3);border:1px solid var(--rule); border-radius:6px;padding:22px;max-width:480px;margin:22px 0} .contact-label{font-family:var(--mono);font-size:11px;letter-spacing:.1em; text-transform:uppercase;color:var(--ink-soft)} .contact-email{font-size:20px;font-weight:600;margin-top:4px} /* --- legal pages (privacy, terms) --- */ .legal-body{max-width:70ch;margin-top:18px} .legal-body h2{font-family:var(--serif);font-size:20px;margin:1.6em 0 .3em} .legal-body p{color:var(--ink);margin:.5em 0;line-height:1.6} .legal-note{font-family:var(--mono);font-size:13px;color:var(--ink-soft); border-top:1px solid var(--rule);padding-top:14px;margin-top:24px} /* --- sidebar responsive: collapse under a toggle on narrow screens --- */ @media (max-width:820px){ .nav-toggle{display:block} .layout{display:block} .sidebar{position:fixed;top:0;left:0;height:100%;width:260px;z-index:40; background:var(--paper-2);border-right:1px solid var(--rule); transform:translateX(-100%);transition:transform .2s ease;padding-top:70px} .sidebar.open{transform:translateX(0)} .page{padding:24px 18px 60px} .theme-switch{margin-left:auto} } .site-footer{max-width:var(--maxw);margin:40px auto 0} /* ===== Step-by-step working panel (append to app.css) ===================== Theme-aware (uses the same CSS variables as everything else, so it recolours on light/sepia/dark automatically). Only appears when a calculator returns steps; otherwise the partial stays hidden. */ .nc-steps{margin-top:20px} .nc-steps-toggle{display:inline-flex;border:1px solid var(--rule); border-radius:4px;overflow:hidden;margin-bottom:14px} .nc-steps-toggle button{font-family:var(--mono);font-size:13px;padding:8px 14px; background:var(--paper-3);color:var(--ink-soft);border:none;cursor:pointer; transition:background .12s,color .12s} .nc-steps-toggle button + button{border-left:1px solid var(--rule)} .nc-steps-toggle button:hover{color:var(--accent)} .nc-steps-toggle button.active{background:var(--accent);color:var(--paper-3)} .nc-steps-list{list-style:none;counter-reset:step;margin:0;padding:0; background:var(--paper-3);border:1px solid var(--rule);border-radius:6px} .nc-steps-list li{counter-increment:step;position:relative; padding:14px 18px 14px 52px;border-bottom:1px solid var(--rule)} .nc-steps-list li:last-child{border-bottom:none} .nc-steps-list li::before{content:counter(step);position:absolute;left:16px;top:14px; width:24px;height:24px;line-height:24px;text-align:center; font-family:var(--mono);font-size:13px;font-weight:700; color:var(--paper-3);background:var(--accent);border-radius:50%} .nc-step-label{font-size:15px;color:var(--ink);margin-bottom:4px} .nc-step-math{font-family:var(--mono);font-size:15px;color:var(--ink); margin:4px 0;overflow-x:auto} .nc-step-note{font-size:13px;color:var(--ink-soft);margin-top:4px} /* ===== Clear toggle "active" state, shared by all toggles (append to app.css) == The problem this fixes: previously the active mode button only changed text colour (via .op), which looked identical to operator buttons — so you could not tell which mode was selected. These rules give every toggle a strong, consistent "selected" look: the ACTIVE button is filled with the accent colour; the inactive one is plain. Applies to: - standard / scientific (.nc-seg buttons in .calc-mode) - DEG / RAD (.nc-seg buttons) - the existing steps toggle already uses .nc-steps-toggle .active (filled accent) — this just keeps it consistent. */ .calc-mode .nc-seg{ font-family:var(--mono);font-size:12px;padding:6px 12px;border-radius:3px; background:var(--paper);border:1px solid var(--rule);color:var(--ink-soft); cursor:pointer;transition:background .12s,color .12s,border-color .12s} .calc-mode .nc-seg:hover{border-color:var(--accent);color:var(--accent)} .calc-mode .nc-seg.active{ background:var(--accent);color:var(--paper-3);border-color:var(--accent); font-weight:700} /* small plain-English status line under the toggles */ .calc-status{font-family:var(--mono);font-size:12px;color:var(--ink-soft); margin:4px 0 6px;letter-spacing:.02em} .calc-status::before{content:"▸ ";color:var(--accent)} /* ===== Sidebar accordion + live filter (append to app.css) ================ In-rail accordion that scales to 34+ calculators per section without clutter. One section expands at a time; within it each sub-group is a collapsible

(collapsed by default). A live filter box at the top narrows the whole tree by calculator name. Identical on desktop and mobile — no flyout geometry to break. All colours from theme tokens. */ /* --- filter box --- */ .side-filter{display:flex;align-items:stretch;margin:0 4px 12px;position:relative} .side-filter input{ flex:1;min-width:0;font-family:var(--mono);font-size:13px; padding:8px 28px 8px 10px;color:var(--ink); background:var(--paper-3);border:1px solid var(--rule);border-radius:4px} .side-filter input:focus{outline:none;border-color:var(--accent)} .side-filter input::placeholder{color:var(--ink-soft)} .side-filter-clear{ position:absolute;right:6px;top:50%;transform:translateY(-50%); width:20px;height:20px;line-height:18px;text-align:center; font-size:16px;color:var(--ink-soft); background:none;border:none;border-radius:3px;cursor:pointer} .side-filter-clear:hover{color:var(--accent)} .side-filter-empty{ font-family:var(--mono);font-size:12px;color:var(--ink-soft); margin:-6px 6px 12px} /* --- accordion: section level --- */ .side-section{margin-bottom:2px} .side-section-row{display:flex;align-items:stretch;gap:0} /* caret button: toggles the tree, no navigation */ .side-section-caret-btn{ flex:0 0 auto;display:flex;align-items:center;justify-content:center; width:26px;padding:7px 2px;border-radius:4px 0 0 4px; background:none;border:none;color:var(--ink-soft);cursor:pointer} .side-section-caret-btn:hover{background:var(--paper-2);color:var(--accent)} /* section name: a real link to the master /section page */ .side-section-link{ flex:1;min-width:0;display:flex;align-items:center;gap:8px; font-family:var(--sans);font-size:15px; padding:7px 8px 7px 4px;border-radius:0;color:var(--ink);text-decoration:none} .side-section-link:hover{background:var(--paper-2);color:var(--accent);text-decoration:none} .side-section-name{flex:1;min-width:0; overflow:hidden;text-overflow:ellipsis;white-space:nowrap} .side-section-link .count-pill{flex:0 0 auto} .side-caret{flex:0 0 auto;color:var(--ink-soft); transition:transform .15s ease;font-size:13px} .side-section.open .side-section-link{background:var(--paper-2);color:var(--accent)} .side-section.open .side-section-caret-btn{background:var(--paper-2);color:var(--accent)} .side-section.open .side-caret{transform:rotate(90deg);color:var(--accent)} /* the small "open section page" arrow at the row end */ .side-section-all{ flex:0 0 auto;display:flex;align-items:center;padding:0 8px; font-size:13px;color:var(--ink-soft);border-radius:0 4px 4px 0} .side-section-all:hover{color:var(--accent);background:var(--paper-2);text-decoration:none} /* section body: collapsed by default, revealed when the section is open */ .side-section-body{display:none;padding:2px 0 6px 6px; border-left:2px solid var(--rule);margin:2px 0 6px 12px} .side-section.open > .side-section-body{display:block} /* --- accordion: sub-group level (native

) --- */ .side-sub{margin:0 0 1px} .side-sub-summary{ display:flex;align-items:center;gap:6px;cursor:pointer;list-style:none; font-family:var(--sans);font-size:14px;font-weight:600; color:var(--ink);padding:7px 8px;border-radius:4px} .side-sub-summary::-webkit-details-marker{display:none} /* hide native triangle */ .side-sub-summary:hover{color:var(--accent);background:var(--paper-2)} .side-sub-caret{flex:0 0 auto;transition:transform .15s ease;font-size:11px} .side-sub[open] > .side-sub-summary .side-sub-caret{transform:rotate(90deg)} .side-sub[open] > .side-sub-summary{color:var(--accent)} .side-sub-name{flex:1;min-width:0; overflow:hidden;text-overflow:ellipsis;white-space:nowrap} .side-sub-count{flex:0 0 auto;font-size:11px;color:var(--ink-soft)} /* the calculator links themselves */ .side-sub-calcs{display:flex;flex-direction:column;padding:2px 0 6px 16px} .side-calc{ display:block;font-size:14px;line-height:1.3;padding:6px 8px; border-radius:4px;color:var(--ink);text-decoration:none} .side-calc:hover{background:var(--paper-2);color:var(--accent);text-decoration:none} .side-calc.is-current{color:var(--accent);font-weight:600; background:var(--paper-2);box-shadow:inset 2px 0 0 var(--accent)} /* ===== Home page editorial intro (append to app.css) ===================== */ .home-intro{max-width:68ch;margin:30px 0 8px} .home-intro p{font-size:17px;color:var(--ink);line-height:1.7;margin:0 0 16px} .home-intro h2{margin-top:1.1em} .home-intro em{font-style:italic;color:var(--ink)} /* ============================================================ NumberCals — Health batch additions (append to app.css) ============================================================ */ /* Unit pick-list grouping: a value input sitting next to its unit