/* GTMhub site chrome: the navbar and the footer, on every page of gtmhub.ai (main site and Hub alike).
   One definition. Markup: drafts/partials/nav.html and footer.html, injected by tools/build_site.py.
   Loaded LAST on every page and scoped to .site-nav / .site-footer, so no page stylesheet can restyle it.
   Tokens only (Projects/design-system/gtmhub-design-system/colors_and_type.css); tools/check_design.py enforces it.
   Page stylesheets must never target the chrome (header, footer, .nav, .site-*, .sf-*): change it here. */

/* ================= navbar ================= */
.site-nav{position:fixed;top:16px;left:0;right:0;z-index:50;display:flex;justify-content:center;pointer-events:none;font-family:var(--sans)}
.site-nav .nav-in{pointer-events:auto;background:none;box-shadow:none;backdrop-filter:none;-webkit-backdrop-filter:none;display:flex;align-items:center;justify-content:space-between;gap:28px;width:calc(100vw - 2*var(--gut));max-width:var(--container);height:56px;padding:0;border-radius:var(--r-xl);
  transition:width var(--t-swap) var(--ease),background var(--t-ui),box-shadow var(--t-ui),padding var(--t-ui)}
.site-nav.docked .nav-in{width:min(860px,calc(100vw - 32px));padding:0 8px 0 18px;background:color-mix(in srgb,var(--raised) 78%,transparent);backdrop-filter:blur(14px) saturate(1.4);-webkit-backdrop-filter:blur(14px) saturate(1.4);box-shadow:var(--soft),inset 0 0 0 1px color-mix(in srgb,var(--ink) 6%,transparent)}
.site-nav a{color:inherit;text-decoration:none}
.site-nav .word{display:block;line-height:0}
.site-nav .wm{display:block;height:20px;width:auto;color:var(--ink)}
.site-nav .links{display:flex;align-items:center;gap:30px;font:400 var(--fs-15)/1.4 var(--sans)}
.site-nav .links a{color:var(--ink);opacity:.78;transition:opacity var(--t-fast)}
.site-nav .links a:hover,.site-nav .links a[aria-current]{opacity:1}
.site-nav .links .dd{position:relative}
.site-nav .links .dd > a{display:inline-flex;align-items:center;gap:6px}
.site-nav .chev{width:10px;height:6px;transition:transform var(--t-fast)}
.site-nav .dd:hover .chev,.site-nav .dd:focus-within .chev{transform:rotate(180deg)}
.site-nav .dd-m{position:absolute;left:-14px;top:calc(100% + 14px);min-width:300px;padding:8px;border-radius:var(--r-xl);background:color-mix(in srgb,var(--raised) 96%,transparent);backdrop-filter:blur(14px);box-shadow:var(--lift),inset 0 0 0 1px color-mix(in srgb,var(--ink) 6%,transparent);opacity:0;transform:translateY(-6px);pointer-events:none;transition:opacity .18s,transform .18s;z-index:60}
.site-nav .dd-m::before{content:"";position:absolute;left:0;right:0;top:-14px;height:14px}
.site-nav .dd:hover .dd-m,.site-nav .dd:focus-within .dd-m{opacity:1;transform:none;pointer-events:auto}
.site-nav .dd-m a{display:block;padding:10px 12px;border-radius:var(--r-md);opacity:1}
.site-nav .dd-m a:hover{background:var(--chip)}
.site-nav .dd-m b{display:block;font:var(--fw-key) var(--fs-small)/1.35 var(--sans);color:var(--ink)}
.site-nav .dd-m span{display:block;margin-top:2px;font-size:var(--fs-12-5);color:var(--muted)}
.site-nav .arrow-link{display:inline-flex;align-items:center;gap:12px;font:var(--fw-key) var(--fs-15)/1 var(--sans);color:var(--ink)}
.site-nav .arrow-link u{text-decoration:none;border-bottom:1.5px solid var(--ink);padding-bottom:3px}
.site-nav .arrow-link .sq{display:grid;place-items:center;width:36px;height:36px;border-radius:var(--r-md);background:var(--lime);color:var(--on-lime);transition:transform var(--t-fast) var(--ease)}
.site-nav .arrow-link:hover .sq{transform:translate(2px,-2px)}
.site-nav .arrow-link .sq svg{width:14px;height:14px}
/* over a graphite section (chrome.js toggles .dark) */
.site-nav.docked.dark .nav-in{background:color-mix(in srgb,var(--graphite-3) 82%,transparent);box-shadow:0 10px 30px -12px color-mix(in srgb,var(--ink-fixed) 50%,transparent),inset 0 0 0 1px color-mix(in srgb,var(--white) 8%,transparent)}
.site-nav.dark .wm,.site-nav.dark .links a,.site-nav.dark .arrow-link{color:var(--d-text)}
.site-nav.dark .arrow-link u{border-color:var(--d-text)}
.site-nav.dark .dd-m{background:color-mix(in srgb,var(--graphite-2) 96%,transparent);box-shadow:0 20px 50px -20px color-mix(in srgb,var(--ink-fixed) 70%,transparent),inset 0 0 0 1px color-mix(in srgb,var(--white) 8%,transparent)}
.site-nav.dark .dd-m a:hover{background:var(--d-line)}
.site-nav.dark .dd-m b{color:var(--white)}
.site-nav.dark .dd-m span{color:var(--d-muted)}
@media (max-width:1100px){.site-nav .links{display:none}}
@media (max-width:900px){.site-nav .dd-m{left:0}}
@media (max-width:760px){.site-nav{top:10px}.site-nav .nav-in{width:calc(100vw - 20px)}.site-nav .arrow-link u{display:none}}

/* ================= footer ================= */
.site-footer{margin-top:var(--section);padding:0 var(--gut) 24px;font:400 var(--fs-meta)/1.6 var(--sans);color:var(--ink);-webkit-font-smoothing:antialiased}
.site-footer *{box-sizing:border-box}
.site-footer a{color:inherit;text-decoration:none}
.site-footer p,.site-footer h3{margin:0}
.site-footer .sf-in{max-width:var(--container);margin:0 auto;padding:32px;border-radius:var(--r-2xl);background:var(--raised);box-shadow:var(--lift),var(--hair)}
.site-footer .sf-top{display:grid;grid-template-columns:2.2fr 1.1fr 1.1fr .9fr 1.5fr;gap:24px}
.site-footer .sf-logo{display:inline-block;line-height:0}
.site-footer .sf-wm{display:block;height:22px;width:auto;color:var(--ink)}
.site-footer .sf-line{margin-top:20px;font:var(--fw-light) var(--fs-title)/1.2 var(--sans);letter-spacing:-.01em;color:var(--tone)}
.site-footer .sf-line b{font-weight:var(--fw-light);color:var(--ink)}
.site-footer .sf-brand > p:not(.sf-line){margin-top:8px;max-width:360px;color:var(--muted)}
.site-footer .sf-brief{margin-top:24px;max-width:340px}
.site-footer .sf-brief b{font-weight:var(--fw-key)}
.site-footer .sf-brief > p{margin:2px 0 12px;color:var(--muted)}
.site-footer .sf-col h3,.site-footer .sf-k{font:400 var(--fs-label)/1 var(--mono);letter-spacing:var(--tr-label);text-transform:uppercase;color:var(--tone)}
.site-footer .sf-col h3{margin-bottom:18px}
.site-footer .sf-col > a{display:block;margin-bottom:10px;width:fit-content}
.site-footer .sf-col > a:hover,.site-footer .sf-base > a:hover{text-decoration:underline;text-underline-offset:3px}
.site-footer .sf-person{display:flex;align-items:center;gap:10px}
.site-footer .sf-person img{width:40px;height:40px;border-radius:50%;object-fit:cover;flex:none}
.site-footer .sf-person b{display:flex;align-items:center;gap:5px;font-weight:var(--fw-key);line-height:1.3}
.site-footer .sf-ok{width:15px;height:15px;flex:none}
.site-footer .sf-person small{display:block;font-size:var(--fs-12);color:var(--muted)}
.site-footer .sf-person .sf-icon{margin-left:4px}
.site-footer .sf-talk .sf-mail{display:flex;align-items:center;gap:10px;margin-top:14px;width:fit-content}
.site-footer .sf-mail i{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;color:var(--ink);box-shadow:inset 0 0 0 1px var(--line);transition:box-shadow var(--t-fast)}
.site-footer .sf-mail svg{width:16px;height:16px}
.site-footer .sf-mail:hover i{box-shadow:inset 0 0 0 1px var(--line-2)}
.site-footer .sf-mail:hover{text-decoration:underline;text-underline-offset:3px}
.site-footer .sf-icon{display:grid;place-items:center;width:30px;height:30px;border-radius:var(--r-md);color:var(--muted);box-shadow:inset 0 0 0 1px var(--line);transition:color var(--t-fast),box-shadow var(--t-fast)}
.site-footer .sf-icon:hover{color:var(--ink);box-shadow:inset 0 0 0 1px var(--line-2)}
.site-footer .sf-icon svg{width:14px;height:14px}
/* Built for, and an AI summary of the site; then the base row with the partner badges, small (as Workflows.io does) */
.site-footer .sf-mid{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px 32px;margin-top:32px;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.site-footer .sf-built{display:flex;flex-wrap:wrap;align-items:center;gap:8px 22px;font:400 var(--fs-label)/1 var(--mono);letter-spacing:.04em;color:var(--muted)}
.site-footer .sf-ai{display:flex;align-items:center;gap:6px}
.site-footer .sf-ai > span{margin-right:8px;color:var(--muted)}
.site-footer .sf-ai .sf-icon{border-radius:50%;width:32px;height:32px}
.site-footer .sf-ai .sf-icon svg{width:15px;height:15px}
.site-footer .sf-partners{display:flex;align-items:center;gap:12px}
.site-footer .sf-partners ul{display:flex;gap:6px;margin:0;padding:0;list-style:none}
.site-footer .sf-partners li{display:grid;place-items:center;width:28px;height:28px;border-radius:var(--r-sm);background:var(--sunken);box-shadow:inset 0 0 0 1px var(--line)}
.site-footer .sf-partners svg{width:14px;height:14px}
.site-footer .sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.site-footer .sf-base{display:flex;align-items:center;gap:20px;padding-top:20px;font-size:var(--fs-12);color:var(--muted)}
.site-footer .sf-partners{margin-right:auto}
.site-footer .sf-social{display:flex;gap:6px}
/* The Brief form in the footer (Hub pages style their own instances in hub.css) */
.site-footer .hsubscribe{display:grid;grid-template-columns:1fr auto;gap:8px}
.site-footer .hsubscribe input{min-width:0;width:100%;height:42px;padding:0 12px;border:0;border-radius:var(--r-md);background:var(--bg);box-shadow:inset 0 0 0 1px var(--line);font:400 var(--fs-meta)/1 var(--sans);color:var(--ink)}
.site-footer .hsubscribe input::placeholder{color:var(--faint)}
.site-footer .hsubscribe button{display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 14px;border:0;border-radius:var(--r-md);background:var(--lime);color:var(--on-lime);font:var(--fw-key) var(--fs-meta)/1 var(--sans);cursor:pointer}
.site-footer .hsubscribe button svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.5}
.site-footer .hsubscribe small{grid-column:span 2;font-size:var(--fs-11);line-height:1.5;color:var(--muted)}
.site-footer .hsubscribe small a{text-decoration:underline;text-underline-offset:2px}
.site-footer .hsubscribe .form-status{grid-column:span 2;font-size:var(--fs-12);color:var(--ink)}
.site-footer .hsubscribe .form-status:empty{display:none}
.site-footer .htrap{position:absolute;left:-9999px}
/* theme switch */
.site-footer .thm{display:flex;gap:2px;padding:3px;border-radius:var(--r-md);background:var(--chip)}
.site-footer .thm button{border:0;background:none;padding:5px 10px;border-radius:var(--r-sm);font:400 var(--fs-12)/1 var(--sans);color:var(--muted);cursor:pointer}
.site-footer .thm button[aria-pressed="true"]{background:var(--raised);color:var(--ink);box-shadow:var(--hair)}
@media (max-width:1000px){.site-footer .sf-top{grid-template-columns:2fr 1fr 1fr}.site-footer .sf-brand{grid-row:span 2}}
@media (max-width:760px){
  .site-footer{padding:0 12px 12px}
  .site-footer .sf-in{padding:24px}
  .site-footer .sf-top{grid-template-columns:1fr 1fr;gap:28px 16px}
  .site-footer .sf-brand{grid-column:span 2;grid-row:auto}
  .site-footer .sf-partners{width:100%}
  .site-footer .sf-base{flex-wrap:wrap;gap:14px}
  .site-footer .thm{margin-left:auto}}