/* site.css — shared design system for all 13 sites. * * Per-site colour is one line in each site's : :root{--brand:#1e40af;--accent:#0891b2} * Everything else is derived from those two with color-mix(). Named palettes: themes.css. * No web fonts — zero external requests. * * Layout note: pages are authored as plain documents (h1, p, ul of links). Rather than rewrite * markup across every site, structural styling is applied with :has() — link lists become card * grids, the opening h1+lede becomes a hero. Markup stays semantic and portable. */ :root { --brand: #1f6feb; --accent: var(--brand); --bg: #fdfdfc; --surface: #ffffff; --soft: #f5f7fa; --sunken: #eceff4; --ink: #0f1319; --ink-2: #333c4a; --muted: #626c7d; --line: #e5e9ef; --line-strong: #cdd5e0; --ok: #0f7b46; --warn: #8a4b00; --warn-bg: #fff5e8; --brand-ink: color-mix(in srgb, var(--brand) 84%, #000 16%); --brand-soft: color-mix(in srgb, var(--brand) 7%, var(--bg)); --brand-line: color-mix(in srgb, var(--brand) 24%, var(--line)); --on-brand: #fff; --radius: 16px; --radius-sm: 10px; --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06); --shadow: 0 1px 2px rgba(15, 23, 42, .05), 0 10px 28px -12px rgba(15, 23, 42, .16); --shadow-lg: 0 2px 4px rgba(15, 23, 42, .04), 0 28px 56px -20px rgba(15, 23, 42, .26); --ring: 0 0 0 3px color-mix(in srgb, var(--brand) 30%, transparent); /* Editorial serif display + neutral sans text. Both are system faces — nothing to download. */ --font-display: ui-serif, "Iowan Old Style", Charter, "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif; --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; --maxw: 72rem; --measure: 40rem; } /* Dark tokens apply when the OS asks for dark AND the visitor hasn't forced light, or when they've explicitly chosen dark. The toggle writes data-theme onto ; with no choice stored the OS wins. */ @media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) { --bg: #0b0e13; --surface: #141821; --soft: #161b24; --sunken: #1c222c; --ink: #f2f5f9; --ink-2: #c6cedb; --muted: #8f99ab; --line: #232a36; --line-strong: #333c4b; --warn: #fbbf24; --warn-bg: #2a2010; --brand-ink: color-mix(in srgb, var(--brand) 68%, #fff 32%); --brand-soft: color-mix(in srgb, var(--brand) 13%, var(--bg)); --brand-line: color-mix(in srgb, var(--brand) 32%, var(--line)); --shadow-sm: 0 1px 2px rgba(0, 0, 0, .5); --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 10px 28px -12px rgba(0, 0, 0, .7); --shadow-lg: 0 2px 4px rgba(0, 0, 0, .4), 0 28px 56px -20px rgba(0, 0, 0, .8); } } /* Explicit choice — same tokens, applied regardless of OS preference. */ :root[data-theme="dark"] { --bg: #0b0e13; --surface: #141821; --soft: #161b24; --sunken: #1c222c; --ink: #f2f5f9; --ink-2: #c6cedb; --muted: #8f99ab; --line: #232a36; --line-strong: #333c4b; --warn: #fbbf24; --warn-bg: #2a2010; --brand-ink: color-mix(in srgb, var(--brand) 68%, #fff 32%); --brand-soft: color-mix(in srgb, var(--brand) 13%, var(--bg)); --brand-line: color-mix(in srgb, var(--brand) 32%, var(--line)); --shadow-sm: 0 1px 2px rgba(0, 0, 0, .5); --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 10px 28px -12px rgba(0, 0, 0, .7); --shadow-lg: 0 2px 4px rgba(0, 0, 0, .4), 0 28px 56px -20px rgba(0, 0, 0, .8); } /* ============================ base ============================ */ * { box-sizing: border-box; } html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; } @media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; } } body { margin: 0; font: 400 1.0625rem/1.72 var(--font); color: var(--ink-2); background: var(--bg); -webkit-font-smoothing: antialiased; } img, svg { max-width: 100%; height: auto; } a { color: var(--brand-ink); text-underline-offset: .18em; text-decoration-thickness: .06em; } a:hover { color: var(--brand); } :focus-visible { outline: none; box-shadow: var(--ring); border-radius: 5px; } ::selection { background: color-mix(in srgb, var(--brand) 20%, transparent); } .wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(1.15rem, 4vw, 2.5rem); } main { padding: 0 0 5rem; } /* Body copy keeps a readable measure; structural blocks span the full column. */ main .wrap > * { max-width: var(--measure); } main .wrap > #calculator, main .wrap > table, main .wrap > .calc-table-wrap, main .wrap > ul:has(> li > a > strong), main .wrap > .faq, main .wrap > .disclaimer { max-width: none; } /* ============================ type ============================ */ h1, h2, h3 { color: var(--ink); text-wrap: balance; } h1 { font-family: var(--font-display); font-size: clamp(2.4rem, 1.6rem + 3.4vw, 4rem); font-weight: 600; line-height: 1.06; letter-spacing: -.028em; margin: 0 0 1rem; } h2 { font-family: var(--font-display); font-size: clamp(1.6rem, 1.3rem + 1.1vw, 2.15rem); font-weight: 600; line-height: 1.2; letter-spacing: -.02em; margin: 3.75rem 0 1rem; position: relative; } /* accent rule above each section heading */ main h2::before { content: ""; display: block; width: 2.25rem; height: 2px; margin-bottom: 1.15rem; background: linear-gradient(90deg, var(--brand), color-mix(in srgb, var(--accent) 60%, var(--brand))); border-radius: 2px; } h3 { font-size: 1.2rem; font-weight: 660; letter-spacing: -.012em; margin: 2.25rem 0 .6rem; font-family: var(--font); } p { margin: 0 0 1.15rem; } strong { font-weight: 640; color: var(--ink); } main ul, main ol { padding-left: 1.25rem; margin: 0 0 1.15rem; } main li { margin-bottom: .45rem; } main li::marker { color: color-mix(in srgb, var(--brand) 70%, var(--muted)); } /* ---- hero: the opening h1 + lede on every page ---- */ main > .wrap > h1:first-child, main > .wrap > .breadcrumb + h1 { margin-top: 0; } main > .wrap { position: relative; } main > .wrap::before { content: ""; position: absolute; inset: -1px 0 auto; height: 27rem; z-index: -1; background: radial-gradient(60rem 22rem at 12% -6rem, color-mix(in srgb, var(--brand) 13%, transparent), transparent 70%), radial-gradient(44rem 20rem at 92% -9rem, color-mix(in srgb, var(--accent) 11%, transparent), transparent 70%); pointer-events: none; } main .wrap > h1 { padding-top: clamp(2.5rem, 6vw, 4.5rem); } main .wrap > .breadcrumb + h1 { padding-top: .25rem; } .answer { font-family: var(--font-display); font-size: clamp(1.18rem, 1.05rem + .55vw, 1.45rem); line-height: 1.55; font-weight: 400; color: var(--ink-2); border-left: 2px solid var(--brand); padding: .1rem 0 .1rem 1.35rem; margin: 0 0 1.5rem; max-width: 38rem; } .answer strong { color: var(--ink); font-weight: 620; } .updated { color: var(--muted); font-size: .8rem; margin: 0 0 2.5rem; text-transform: uppercase; letter-spacing: .07em; font-weight: 560; } .updated a { color: var(--muted); } .breadcrumb { font-size: .8rem; color: var(--muted); padding-top: 2rem; margin: 0 0 1.5rem; letter-spacing: .02em; } .breadcrumb a { color: var(--muted); text-decoration: none; } .breadcrumb a:hover { color: var(--brand); } /* ============================ header ============================ */ header.site { border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 78%, transparent); backdrop-filter: saturate(1.7) blur(14px); -webkit-backdrop-filter: saturate(1.7) blur(14px); position: sticky; top: 0; z-index: 50; } header.site .wrap { display: flex; align-items: center; justify-content: space-between; min-height: 4.5rem; gap: 1rem; flex-wrap: wrap; } .logo { font-family: var(--font-display); font-weight: 600; font-size: 1.16rem; letter-spacing: -.022em; text-decoration: none; color: var(--ink); display: inline-flex; align-items: center; gap: .6rem; } /* Placeholder mark, used until a site has real brand artwork. */ .logo::before { content: ""; width: 1.55rem; height: 1.55rem; border-radius: 7px; flex: none; background: linear-gradient(145deg, var(--brand), color-mix(in srgb, var(--accent) 75%, var(--brand))); box-shadow: 0 2px 8px -2px color-mix(in srgb, var(--brand) 55%, transparent); } /* Real artwork present — drop the placeholder. */ .logo:has(.logo-mark)::before { display: none; } .logo-mark { display: inline-flex; line-height: 0; flex: none; } .logo-mark svg { width: 1.75rem; height: 1.75rem; display: block; border-radius: 7px; box-shadow: 0 2px 8px -2px color-mix(in srgb, var(--brand) 55%, transparent); } nav.site { display: flex; flex-wrap: wrap; gap: .2rem; } nav.site a { text-decoration: none; color: var(--muted); font-size: .9rem; font-weight: 540; padding: .5rem .8rem; border-radius: 8px; transition: background .15s, color .15s; } nav.site a:hover { color: var(--ink); background: var(--soft); } /* ---- theme toggle ---- */ .theme-toggle { border: 1px solid var(--line-strong); background: var(--surface); color: var(--muted); border-radius: 999px; padding: .4rem .5rem; cursor: pointer; line-height: 0; display: inline-flex; align-items: center; justify-content: center; transition: color .15s, border-color .15s, background .15s; } .theme-toggle:hover { color: var(--ink); border-color: var(--brand); } .theme-toggle svg { width: 1.05rem; height: 1.05rem; display: block; } .theme-toggle .i-sun { display: none; } :root[data-theme="dark"] .theme-toggle .i-sun { display: block; } :root[data-theme="dark"] .theme-toggle .i-moon { display: none; } @media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .theme-toggle .i-sun { display: block; } :root:not([data-theme="light"]) .theme-toggle .i-moon { display: none; } } /* ---- hero artwork ---- */ .hero { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: clamp(1.5rem, 4vw, 3.5rem); align-items: center; max-width: none !important; margin-bottom: 1rem; } .hero > div { min-width: 0; } .hero h1, .hero .answer, .hero .updated { max-width: none; } .hero-art { margin: 0; min-width: 0; } .hero-art svg { width: 100%; height: auto; display: block; overflow: visible; } @media (max-width: 54rem) { .hero { grid-template-columns: 1fr; gap: 1.75rem; } .hero-art { order: -1; max-width: 22rem; } } /* Artwork inherits the site's brand: strokes/fills use currentColor or the brand vars. */ .art-brand { color: var(--brand); } .art-accent { color: color-mix(in srgb, var(--accent) 78%, var(--brand)); } .art-line { stroke: var(--line-strong); } .art-surface { fill: var(--surface); } .art-soft { fill: var(--soft); } .art-ink { fill: var(--ink); } /* ---- card icons ---- */ .card-icon { width: 2.5rem; height: 2.5rem; border-radius: 10px; margin-bottom: 1rem; display: flex; align-items: center; justify-content: center; color: var(--brand); background: color-mix(in srgb, var(--brand) 10%, transparent); border: 1px solid color-mix(in srgb, var(--brand) 18%, transparent); } .card-icon svg { width: 1.3rem; height: 1.3rem; } /* ---- inline figures in body copy ---- */ figure.inline-art { margin: 2rem 0; padding: 1.5rem; background: var(--soft); border: 1px solid var(--line); border-radius: var(--radius); max-width: none; } figure.inline-art svg { width: 100%; height: auto; display: block; } figure.inline-art figcaption { margin-top: 1rem; font-size: .85rem; color: var(--muted); text-align: center; } /* ============ link lists become a card grid (no markup change) ============ */ main ul:has(> li > a > strong) { list-style: none; padding: 0; margin: 1.5rem 0 1rem; display: grid; gap: 1rem; /* min() keeps the track from forcing a floor wider than the column itself — a bare minmax(19rem,1fr) overflows a 320px viewport once wrap padding is taken off. */ grid-template-columns: repeat(auto-fit, minmax(min(19rem, 100%), 1fr)); } main ul:has(> li > a > strong) > li { margin: 0; padding: 1.5rem 1.6rem 1.6rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); color: var(--muted); font-size: .94rem; line-height: 1.6; position: relative; overflow: hidden; transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease; } main ul:has(> li > a > strong) > li::after { content: ""; position: absolute; inset: 0 0 auto; height: 2px; transform: scaleX(0); transform-origin: 0 50%; background: linear-gradient(90deg, var(--brand), color-mix(in srgb, var(--accent) 65%, var(--brand))); transition: transform .25s ease; } main ul:has(> li > a > strong) > li:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--brand-line); } main ul:has(> li > a > strong) > li:hover::after { transform: scaleX(1); } main ul:has(> li > a > strong) > li::marker { content: none; } main ul:has(> li > a > strong) > li > a { text-decoration: none; display: block; margin-bottom: .55rem; } main ul:has(> li > a > strong) > li > a > strong { font-family: var(--font-display); font-size: 1.22rem; font-weight: 600; letter-spacing: -.018em; color: var(--ink); line-height: 1.25; display: inline-flex; align-items: baseline; gap: .4rem; } main ul:has(> li > a > strong) > li > a > strong::after { content: "→"; font-family: var(--font); font-size: .95rem; color: var(--brand); transition: transform .2s ease; display: inline-block; } main ul:has(> li > a > strong) > li:hover > a > strong::after { transform: translateX(3px); } main ul:has(> li > a > strong) > li > br { display: none; } /* ============================ calculator ============================ */ #calculator { border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(1.3rem, 3vw, 2.1rem); margin: 2rem 0 2.5rem; background: var(--surface); box-shadow: var(--shadow-lg); position: relative; overflow: hidden; } #calculator::before { content: ""; position: absolute; inset: 0 0 auto; height: 3px; background: linear-gradient(90deg, var(--brand), color-mix(in srgb, var(--accent) 65%, var(--brand))); } .calc-form { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(15rem, 100%), 1fr)); gap: 1.1rem 1.25rem; } .calc-field label, .calc-label, legend { display: block; font-weight: 600; font-size: .76rem; margin-bottom: .45rem; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; } .calc-input { display: flex; align-items: stretch; background: var(--bg); border: 1px solid var(--line-strong); border-radius: var(--radius-sm); overflow: hidden; transition: border-color .15s, box-shadow .15s; } .calc-input:focus-within { border-color: var(--brand); box-shadow: var(--ring); } .calc-input .affix { padding: 0 .75rem; display: flex; align-items: center; background: var(--sunken); color: var(--muted); font-size: .9rem; font-weight: 560; } .calc-input input, .calc-field select, .calc-row input { width: 100%; border: 0; padding: .75rem .85rem; font: inherit; background: transparent; color: var(--ink); min-height: 3rem; } .calc-input input:focus, .calc-field select:focus { outline: none; } .calc-field select, .calc-row input { background: var(--bg); border: 1px solid var(--line-strong); border-radius: var(--radius-sm); transition: border-color .15s, box-shadow .15s; } .calc-field select:focus-visible, .calc-row input:focus-visible { border-color: var(--brand); box-shadow: var(--ring); } fieldset { border: 0; padding: 0; margin: 0; min-width: 0; } .calc-radio, .calc-check { display: flex; align-items: center; gap: .55rem; font-weight: 400; min-height: 2rem; text-transform: none; letter-spacing: 0; } .calc-radio input, .calc-check input { accent-color: var(--brand); width: 1.05rem; height: 1.05rem; } .calc-help { color: var(--muted); font-size: .82rem; margin: .4rem 0 0; } .calc-repeater, .calc-field.calc-repeater { grid-column: 1 / -1; } .calc-row { display: flex; gap: .5rem; margin-bottom: .5rem; } .calc-row input { flex: 1; min-width: 0; } .calc-add, .calc-remove, .calc-actions button { font: inherit; font-weight: 580; border: 1px solid var(--line-strong); background: var(--surface); color: var(--ink); border-radius: var(--radius-sm); padding: .65rem 1rem; cursor: pointer; min-height: 2.75rem; transition: background .15s, border-color .15s, transform .08s; } .calc-add:hover, .calc-remove:hover, .calc-actions button:hover { background: var(--soft); border-color: var(--brand); } .calc-add:active, .calc-actions button:active { transform: translateY(1px); } .calc-remove { width: 2.75rem; padding: 0; } .calc-result { margin-top: 1.9rem; padding-top: 1.6rem; border-top: 1px solid var(--line); } .calc-summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(11.5rem, 100%), 1fr)); gap: .85rem; } .calc-stat { background: var(--soft); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 1.1rem 1.2rem; } .calc-stat .k { display: block; color: var(--muted); font-size: .72rem; font-weight: 600; text-transform: uppercase; letter-spacing: .075em; margin-bottom: .45rem; } .calc-stat .v { display: block; font-family: var(--font-display); font-size: clamp(1.7rem, 1.4rem + 1vw, 2.3rem); font-weight: 600; letter-spacing: -.028em; font-variant-numeric: tabular-nums; line-height: 1.08; color: var(--ink); } .calc-stat.strong { background: linear-gradient(150deg, var(--brand), color-mix(in srgb, var(--brand) 62%, #000 20%)); border-color: transparent; box-shadow: 0 12px 28px -12px color-mix(in srgb, var(--brand) 65%, transparent); } .calc-stat.strong .k { color: rgba(255, 255, 255, .78); } .calc-stat.strong .v { color: #fff; } .calc-table-wrap { overflow-x: auto; margin-top: 1.25rem; } .calc-table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; font-size: .92rem; } .calc-table th, .calc-table td { padding: .7rem .6rem; border-bottom: 1px solid var(--line); text-align: left; } .calc-table th { font-weight: 600; color: var(--muted); font-size: .74rem; text-transform: uppercase; letter-spacing: .06em; } .calc-table td { text-align: right; } .calc-table tbody tr:hover { background: var(--soft); } .calc-table tr.total th, .calc-table tr.total td { font-weight: 700; border-top: 2px solid var(--line-strong); border-bottom: 0; } .calc-notes { color: var(--muted); font-size: .86rem; padding-left: 1.1rem; margin-top: 1.1rem; } .calc-warn { background: var(--warn-bg); color: var(--warn); border: 1px solid color-mix(in srgb, var(--warn) 26%, transparent); border-radius: var(--radius-sm); padding: .85rem 1.1rem; margin-bottom: 1rem; font-size: .92rem; } .calc-warn p { margin: .2rem 0; } .calc-actions { display: flex; gap: .6rem; margin-top: 1.4rem; flex-wrap: wrap; } /* ============================ content ============================ */ /* display:block makes the table its own scroll container — authors write bare , so this has to work without a wrapper. Column alignment survives via the anonymous table box. */ table, table.data { display: block; width: 100%; max-width: 100%; overflow-x: auto; border-collapse: separate; border-spacing: 0; margin: 1.6rem 0; font-size: .93rem; border: 1px solid var(--line); border-radius: var(--radius-sm); -webkit-overflow-scrolling: touch; background: var(--surface); } table th, table td { padding: .8rem 1rem; text-align: left; border-bottom: 1px solid var(--line); } table thead th { background: var(--soft); font-weight: 600; font-size: .74rem; color: var(--muted); text-transform: uppercase; letter-spacing: .07em; white-space: nowrap; } table tbody tr:last-child td { border-bottom: 0; } table tbody tr:hover { background: color-mix(in srgb, var(--brand) 3.5%, transparent); } table td:not(:first-child) { font-variant-numeric: tabular-nums; } table td:first-child { color: var(--ink); font-weight: 500; } .faq details { border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 1rem 1.25rem; margin-bottom: .65rem; background: var(--surface); transition: border-color .15s, box-shadow .15s; } .faq details:hover { border-color: var(--brand-line); } .faq details[open] { border-color: var(--brand-line); box-shadow: var(--shadow-sm); } .faq summary { font-weight: 620; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 1rem; color: var(--ink); } .faq summary::-webkit-details-marker { display: none; } .faq summary::after { content: "+"; font-size: 1.35rem; font-weight: 300; color: var(--brand); line-height: 1; } .faq details[open] summary::after { content: "−"; } .faq details > *:not(summary) { margin-top: .8rem; } .sources { font-size: .92rem; color: var(--muted); } .sources a { color: var(--muted); } .sources a:hover { color: var(--brand); } .disclaimer { font-size: .86rem; color: var(--muted); background: var(--soft); border: 1px solid var(--line); border-radius: var(--radius-sm); margin-top: 3rem; padding: 1.1rem 1.35rem; max-width: none; } .ad-slot { min-height: 0; } /* reserve height once AdSense is live, to avoid CLS */ /* ============================ footer ============================ */ footer.site { border-top: 1px solid var(--line); background: var(--soft); padding: 3.5rem 0 2.5rem; color: var(--muted); font-size: .88rem; margin-top: 5rem; } /* footer lockup: same mark as the header, paired with the site name */ .footer-brand { display: inline-flex; align-items: center; gap: .65rem; text-decoration: none; margin: 0 0 1.5rem; font-family: var(--font-display); font-weight: 600; font-size: 1.15rem; letter-spacing: -.022em; color: var(--ink); } .footer-brand:hover { color: var(--brand); } .footer-brand .logo-mark svg { width: 1.9rem; height: 1.9rem; } footer.site .wrap > p { margin: 0 0 1rem; max-width: none; } footer.site .wrap > p:first-child { display: flex; flex-wrap: wrap; gap: .3rem 1.6rem; padding-bottom: 1.4rem; margin-bottom: 1.4rem; border-bottom: 1px solid var(--line); } footer.site .wrap > p:first-child a { font-family: var(--font-display); font-size: 1rem; color: var(--ink); margin: 0; } footer.site a { color: var(--ink-2); margin-right: 1.2rem; text-decoration: none; font-weight: 520; } footer.site a:hover { color: var(--brand); text-decoration: underline; } /* ============================ print ============================ */ @media print { header.site, nav.site, footer.site, .calc-actions, .ad-slot, .calc-form, .breadcrumb { display: none !important; } main > .wrap::before { display: none; } #calculator { border: 0; padding: 0; box-shadow: none; } #calculator::before { display: none; } .calc-stat.strong { background: #fff !important; border: 1px solid #000; box-shadow: none; } .calc-stat.strong .k, .calc-stat.strong .v { color: #000 !important; } body { color: #000; background: #fff; font-size: 11pt; } a { color: #000; } table { border-color: #999; } }