/* FlowCAD3D website — the content pages (2026.10.83): roles, applications, knowledge base, comparison, calculator,
   demo request; light and dark theme (prefers-color-scheme). Fonts from /assets/fonts only (CSP: no external fonts). */
@font-face { font-family: "Montserrat"; font-weight: 500; font-display: swap; src: url("/assets/fonts/montserrat-latin-500-normal.woff2") format("woff2"); }
@font-face { font-family: "Montserrat"; font-weight: 600; font-display: swap; src: url("/assets/fonts/montserrat-latin-600-normal.woff2") format("woff2"); }
@font-face { font-family: "Montserrat"; font-weight: 700; font-display: swap; src: url("/assets/fonts/montserrat-latin-700-normal.woff2") format("woff2"); }

:root {
  color-scheme: light;
  --bg: #F5F7FA; --surface: #FFFFFF; --surface2: #E9EEF4; --fg: #0B1E3A; --fg2: #33445C; --fg3: #56677E; --line: #D3DCE7;
  --accent: #0066FF; --accent-hover: #0052CC; --on-accent: #FFFFFF; --link: #0052CC; --mark: #0B8FC4;
  --hero: linear-gradient(160deg, #0B1E3A 0%, #12305C 100%); --hero-fg: #FFFFFF; --hero-fg2: rgba(255, 255, 255, .82);
  --shadow: 0 6px 22px rgba(11, 30, 58, .08); --err: #B42318; --ok: #067647;
  --font: "Montserrat", system-ui, -apple-system, "Segoe UI", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #081629; --surface: #0E2240; --surface2: #13294A; --fg: #F2F6FB; --fg2: #C9D4E2; --fg3: #9AABC0; --line: #25406A;
    --accent: #2F7DFF; --accent-hover: #4A8EFF; --on-accent: #FFFFFF; --link: #7CC0FF; --mark: #14C8FF;
    --hero: linear-gradient(160deg, #0B1E3A 0%, #0E2A52 100%); --shadow: 0 6px 22px rgba(0, 0, 0, .35); --err: #FF9B9B; --ok: #6CE9A6;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body.pg { margin: 0; background: var(--bg); color: var(--fg); font: 500 16px/1.6 var(--font); overflow-x: hidden; }
.wrap { width: 100%; max-width: 1120px; margin: 0 auto; padding-left: 16px; padding-right: 16px; }
a { color: var(--link); text-underline-offset: 2px; }
a:focus-visible, button:focus-visible, summary:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 2px solid var(--mark); outline-offset: 2px; }
.skip { position: absolute; left: 8px; top: -60px; z-index: 100; padding: 8px 14px; border-radius: 8px; background: var(--accent); color: var(--on-accent); }
.skip:focus { top: 8px; }

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 1px solid transparent; cursor: pointer; font: 700 15px/1.2 var(--font);
  background: var(--accent); color: var(--on-accent); text-decoration: none; padding: 12px 20px; border-radius: 10px; transition: background .15s; }
.btn:hover { background: var(--accent-hover); }
.btn.ghost { background: transparent; color: var(--fg); border-color: var(--line); }
.btn.ghost:hover { background: var(--surface2); }
.btn-sm { padding: 8px 14px; font-size: 14px; }
.btn[disabled] { opacity: .6; cursor: default; }

/* ---------- header and navigation ---------- */
.hdr { position: sticky; top: 0; z-index: 20; background: var(--surface); border-bottom: 1px solid var(--line); }
.hdr-in { display: flex; align-items: center; gap: 16px; min-height: 64px; }
.brand { display: block; flex: none; }
.brand img { display: block; width: 150px; height: auto; }
.menu-btn { display: none; margin-left: auto; font: 700 14px var(--font); color: var(--fg); background: transparent; border: 1px solid var(--line); border-radius: 8px; padding: 8px 14px; cursor: pointer; }
.nav { display: flex; align-items: center; gap: 2px; margin-left: auto; font-size: 14px; font-weight: 600; }
.nav > a, .dd > summary { color: var(--fg2); text-decoration: none; padding: 8px 10px; border-radius: 8px; cursor: pointer; white-space: nowrap; }
.nav > a:hover, .dd > summary:hover { background: var(--surface2); color: var(--fg); }
.nav > a[aria-current="page"] { color: var(--fg); background: var(--surface2); }
.nav > a.btn { color: var(--on-accent); margin-left: 6px; }
.nav > a.btn:hover { background: var(--accent-hover); }
.nav > a.lang { border: 1px solid var(--line); margin-left: 6px; font-weight: 700; }
.dd { position: relative; }
.dd > summary { list-style: none; }
.dd > summary::-webkit-details-marker { display: none; }
.dd > summary::after { content: ""; display: inline-block; width: 6px; height: 6px; margin-left: 7px; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: translateY(-3px) rotate(45deg); }
.dd ul { list-style: none; margin: 0; padding: 6px; }
.dd[open] ul { position: absolute; left: 0; top: calc(100% + 6px); min-width: 250px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); }
.dd li a { display: block; padding: 8px 12px; border-radius: 8px; color: var(--fg); text-decoration: none; }
.dd li a:hover, .dd li a[aria-current="page"] { background: var(--surface2); }
@media (max-width: 1080px) {
  .menu-btn { display: block; }
  .nav { display: none; position: absolute; left: 0; right: 0; top: 100%; flex-direction: column; align-items: stretch; gap: 2px; margin: 0; padding: 10px 16px 16px;
    background: var(--surface); border-bottom: 1px solid var(--line); box-shadow: var(--shadow); max-height: calc(100vh - 64px); overflow-y: auto; }
  .hdr.open .nav { display: flex; }
  .nav > a.btn, .nav > a.lang { margin: 6px 0 0; text-align: center; }
  .dd[open] ul { position: static; min-width: 0; border: 0; box-shadow: none; padding: 0 0 4px 10px; }
}

/* ---------- breadcrumb and hero ---------- */
.crumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 4px 8px; margin: 0; padding: 18px 16px 0; font-size: 13px; color: var(--fg3); }
.crumbs li + li::before { content: "/"; margin-right: 8px; color: var(--fg3); }
.crumbs a { color: var(--fg3); }
.hero { padding-top: 22px; padding-bottom: 8px; }
.hero h1 { margin: 0 0 12px; font-size: clamp(28px, 4vw, 42px); line-height: 1.15; letter-spacing: -.01em; text-wrap: balance; max-width: 26ch; }
.hero .lead { margin: 0; max-width: 64ch; font-size: 18px; color: var(--fg2); }
.hero .meta { margin: 0 0 14px; font-size: 13px; color: var(--fg3); }
.hero-cta { display: flex; flex-wrap: wrap; gap: 10px; margin: 22px 0 0; }
.pg-home .hero { margin-top: 0; padding-top: 48px; padding-bottom: 44px; background: var(--hero); color: var(--hero-fg); max-width: none; }
.pg-home .hero > * { max-width: 1088px; margin-left: auto; margin-right: auto; }
.pg-home .hero h1 { max-width: 1088px; }
.pg-home .hero .lead { color: var(--hero-fg2); }
.pg-home .hero .btn.ghost { color: var(--hero-fg); border-color: rgba(255, 255, 255, .5); }
.pg-home .hero .btn.ghost:hover { background: rgba(255, 255, 255, .12); }
.summary { max-width: 72ch; padding: 14px 18px; border-left: 4px solid var(--accent); background: var(--surface); border-radius: 0 12px 12px 0; box-shadow: var(--shadow); }
.summary h2 { margin: 0 0 4px; font-size: 14px; text-transform: uppercase; letter-spacing: .08em; color: var(--fg3); }
.summary p { margin: 0; }

/* ---------- body text ---------- */
.prose { padding-top: 12px; padding-bottom: 12px; }
.prose > * { max-width: 72ch; }
.prose > .cards, .prose > .table, .prose > .calc-wrap, .prose > .calc-mail, .prose > .form { max-width: none; }
.prose h2 { margin: 36px 0 10px; font-size: 24px; line-height: 1.25; }
.prose h3 { margin: 24px 0 6px; font-size: 18px; line-height: 1.3; }
.prose p, .prose ul, .prose ol { margin: 0 0 14px; color: var(--fg2); }
.prose li { margin: 4px 0; }
.prose strong { color: var(--fg); }
.prose code { font: 600 14px/1.4 ui-monospace, "SFMono-Regular", Menlo, monospace; background: var(--surface2); padding: 1px 5px; border-radius: 5px; }
.table { overflow-x: auto; margin: 6px 0 18px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); -webkit-overflow-scrolling: touch; }
.table table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 640px; }
.table th, .table td { text-align: left; vertical-align: top; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.table thead th { background: var(--surface2); color: var(--fg); font-weight: 700; }
.table tbody th { color: var(--fg); font-weight: 700; }
.table td { color: var(--fg2); }
.table tr:last-child th, .table tr:last-child td { border-bottom: 0; }

/* ---------- cards ---------- */
.cards { list-style: none; margin: 8px 0 20px; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
.card { position: relative; padding: 18px 20px; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow); }
.card h2, .card h3 { margin: 0 0 6px; font-size: 17px; line-height: 1.3; }
.card h2 a, .card h3 a { color: var(--fg); text-decoration: none; }
.card h2 a::after, .card h3 a::after { content: ""; position: absolute; inset: 0; border-radius: 14px; }
.card:hover { border-color: var(--accent); }
.card p { margin: 0; font-size: 14px; color: var(--fg2); }
.related h2 { font-size: 20px; margin: 28px 0 8px; }

/* ---------- call to action ---------- */
.cta { padding-top: 24px; padding-bottom: 48px; }
.cta-box { padding: 26px 24px; border-radius: 16px; background: var(--hero); color: var(--hero-fg); }
.cta-box h2 { margin: 0 0 6px; font-size: 22px; }
.cta-box p { margin: 0 0 12px; color: var(--hero-fg2); }
.cta-box .launch { display: block; width: fit-content; max-width: 100%; padding: 9px 14px; border-radius: 10px; background: rgba(20, 200, 255, .14);
  box-shadow: inset 0 0 0 1px rgba(20, 200, 255, .5); color: #FFFFFF; font-size: 14px; font-weight: 600; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 16px 0 0 !important; }
.cta-box .btn.ghost { color: #FFFFFF; border-color: rgba(255, 255, 255, .5); }
.cta-box .btn.ghost:hover { background: rgba(255, 255, 255, .12); }

/* ---------- forms: demo request, calculator ---------- */
.form { display: grid; gap: 14px; margin: 10px 0 24px; padding: 22px; border-radius: 16px; background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow); }
.form .row, .calc .grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form label, .calc label { display: grid; gap: 6px; align-content: start; font-size: 14px; font-weight: 600; color: var(--fg); }
.form label em { font-style: normal; font-weight: 500; color: var(--fg3); }
.form input, .form textarea, .form select, .calc input { width: 100%; font: 500 15px/1.4 var(--font); color: var(--fg); background: var(--bg);
  border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; }
.form textarea { resize: vertical; min-height: 96px; }
.form [aria-invalid="true"], .calc [aria-invalid="true"] { border-color: var(--err); }
.form .hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form .check { display: flex; align-items: flex-start; gap: 10px; font-weight: 500; color: var(--fg2); }
.form .check input { width: 18px; height: 18px; margin-top: 2px; flex: none; accent-color: var(--accent); }
.form .actions { display: flex; align-items: center; flex-wrap: wrap; gap: 14px; }
.form .status { margin: 0; font-size: 14px; color: var(--fg2); }
.form .status.err { color: var(--err); }
.form .status.ok { color: var(--ok); }
.form h2 { margin: 0; font-size: 20px; }
.hint { margin: 0; font-size: 14px; color: var(--fg3); }
.thanks { padding: 22px; border-radius: 16px; background: var(--surface); border: 1px solid var(--line); }
.thanks h2 { margin: 0 0 6px; }
.calc-wrap { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 18px; align-items: start; margin: 10px 0 18px; }
.calc { display: grid; gap: 16px; }
.calc fieldset { margin: 0; padding: 18px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); display: grid; gap: 12px; min-width: 0; }
.calc legend { padding: 0 6px; font-weight: 700; font-size: 16px; }
.calc-result { position: sticky; top: 80px; padding: 20px; border-radius: 14px; background: var(--hero); color: var(--hero-fg); }
.calc-result h2 { margin: 0 0 10px; font-size: 20px; }
.calc-result dl { margin: 0; display: grid; gap: 10px; }
.calc-result dl > div { display: flex; justify-content: space-between; gap: 12px; padding-bottom: 8px; border-bottom: 1px solid rgba(255, 255, 255, .16); }
.calc-result dt { color: var(--hero-fg2); font-size: 14px; }
.calc-result dd { margin: 0; font-weight: 700; white-space: nowrap; }
.calc-result .net { border-bottom: 0; padding-top: 4px; font-size: 18px; }
.calc-result .net dt { color: #FFFFFF; font-weight: 700; }

/* ---------- footer ---------- */
.ftr { margin-top: 24px; padding: 32px max(16px, calc((100% - 1088px) / 2)) 28px; background: var(--surface); border-top: 1px solid var(--line); font-size: 14px; color: var(--fg3); }
.ftr-cols { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; margin-bottom: 24px; }
.ftr h2 { margin: 0 0 8px; font-size: 13px; text-transform: uppercase; letter-spacing: .08em; color: var(--fg); }
.ftr ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.ftr a { color: var(--fg2); text-decoration: none; }
.ftr a:hover { color: var(--fg); text-decoration: underline; }
.ftr-line { display: inline; margin: 0; }
.consent-link { background: none; border: 0; padding: 0; color: inherit; font: inherit; text-decoration: underline; cursor: pointer; }
/* permission for Google Analytics (site/consent.js) */
.consent { position: fixed; z-index: 50; left: 50%; bottom: 18px; transform: translateX(-50%); width: min(560px, calc(100% - 32px)); display: flex; flex-wrap: wrap; gap: 12px 18px;
  align-items: center; justify-content: space-between; padding: 14px 18px; border-radius: 14px; background: #0B1E3A; color: #FFFFFF; box-shadow: 0 12px 32px rgba(0, 0, 0, .35); font-size: 14px; line-height: 1.45; }
.consent p { margin: 0; flex: 1 1 260px; }
.consent-actions { display: flex; gap: 8px; }
.consent .btn { padding: 8px 16px; font-size: 14px; }
.consent .btn.ghost { color: #FFFFFF; border-color: rgba(255, 255, 255, .5); }

@media (max-width: 860px) {
  .calc-wrap { grid-template-columns: 1fr; }
  .calc-result { position: static; }
  .ftr-cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .form .row, .calc .grid { grid-template-columns: 1fr; }
  .hero .lead { font-size: 17px; }
  .brand img { width: 128px; }
  .hero-cta .btn, .cta-actions .btn { flex: 1 1 100%; }
}
@media (prefers-reduced-motion: reduce) { .btn { transition: none; } }
@media print { .hdr, .ftr, .cta, .consent, .calc-mail { display: none !important; } body.pg { background: #FFFFFF; color: #000000; } }