/* Additiv Corp. — site styles. Tokens follow the SurgiCom design variables in Figma. */
:root {
  --bg: #f7f8fa; --panel: #ffffff; --ink: #1f2430; --ink-2: #5b6270; --ink-3: #8a91a0;
  --line: #e6e8ec; --primary: #5b8def; --primary-ink: #3a6fd8; --soft: #e7eefd;
  --wrap: 1200px; --gutter: 24px; --nav-h: 64px;
  --spring: cubic-bezier(0.22, 1, 0.36, 1);   /* close to a critically damped spring */
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 16px); -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--panel); color: var(--ink); font: 100%/1.5 Inter, system-ui, -apple-system, "Segoe UI", sans-serif; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3, p { margin: 0; }
.wrap { max-width: calc(var(--wrap) + 2 * var(--gutter)); margin: 0 auto; padding: 0 var(--gutter); }
.skip { position: absolute; left: 16px; top: -48px; z-index: 100; padding: 10px 14px; border-radius: 10px; background: var(--ink); color: #fff; }
.skip:focus { top: 12px; }
:focus-visible { outline: 3px solid rgba(91, 141, 239, 0.6); outline-offset: 2px; border-radius: 6px; }

/* ---- type ---------------------------------------------------------------- */
.eyebrow { color: var(--primary-ink); font-weight: 600; font-size: 1.0625rem; letter-spacing: -0.003em; }
.display { font-weight: 600; font-size: clamp(2.5rem, 6.1vw, 5.5rem); line-height: 1; letter-spacing: -0.03em; }
h2 { font-weight: 600; font-size: clamp(2.125rem, 3.9vw, 3.5rem); line-height: 1.05; letter-spacing: -0.025em; max-width: 1100px; }
h3 { font-weight: 600; font-size: 1.5rem; line-height: 1.2; letter-spacing: -0.015em; }
.sub { max-width: 720px; color: var(--ink-2); font-size: clamp(1.0625rem, 1.5vw, 1.3125rem); line-height: 1.45; letter-spacing: -0.004em; }
.heading { display: grid; gap: 16px; margin-bottom: 56px; }

/* ---- buttons & links ------------------------------------------------------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 24px; border: 0; border-radius: 980px;
  font: 500 1.0625rem/1.2 inherit; font-family: inherit; letter-spacing: -0.004em; text-decoration: none; cursor: pointer;
  transition: transform 100ms ease-out, background-color 150ms ease; -webkit-tap-highlight-color: transparent; }
.btn:active { transform: scale(0.97); }
.btn-sm { padding: 8px 16px; font-size: 0.875rem; }
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: #2c3242; }
.btn-secondary { background: var(--panel); color: var(--ink); box-shadow: inset 0 0 0 1px var(--line); }
.btn-secondary:hover { background: var(--bg); }
.link { display: inline-flex; align-items: center; gap: 4px; color: var(--primary-ink); font-weight: 500; font-size: 1.0625rem; text-decoration: none; }
.link::after { content: ""; width: 7px; height: 7px; border: solid currentColor; border-width: 2px 2px 0 0; transform: rotate(45deg); margin-left: 4px; transition: transform 200ms var(--spring); }
.link:hover::after { transform: translateX(3px) rotate(45deg); }
.link:hover { text-decoration: underline; text-underline-offset: 3px; }
.link-sm { font-size: 0.875rem; }

/* ---- nav: translucent, sticky -------------------------------------------- */
.nav { position: sticky; top: 0; z-index: 50; background: rgba(255, 255, 255, 0.72);
  -webkit-backdrop-filter: saturate(180%) blur(20px); backdrop-filter: saturate(180%) blur(20px);
  box-shadow: inset 0 -1px 0 var(--line); }
.nav-inner { max-width: calc(1440px); margin: 0 auto; height: var(--nav-h); padding: 0 120px; display: flex; align-items: center; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 600; font-size: 1.1875rem; letter-spacing: -0.03em; }
.nav-links { flex: 1; display: flex; justify-content: center; gap: 32px; }
.nav-links a { color: var(--ink-2); font-size: 0.875rem; text-decoration: none; transition: color 150ms ease; }
.nav-links a:hover, .nav-links a[aria-current="true"] { color: var(--ink); }
.nav-actions { display: flex; gap: 10px; }
.menu-btn { display: none; width: 44px; height: 44px; margin-right: -10px; border: 0; border-radius: 999px; background: transparent; color: var(--ink); cursor: pointer; }
.menu-btn path { transition: transform 300ms var(--spring); transform-origin: 12px 12px; }
.menu-btn[aria-expanded="true"] .l1 { transform: translateY(3px) rotate(45deg); }
.menu-btn[aria-expanded="true"] .l2 { transform: translateY(-3px) rotate(-45deg); }

/* ---- hero ------------------------------------------------------------------ */
.hero { padding: 112px 0 96px; text-align: center; }
.hero .lede { max-width: 820px; margin: 24px auto 0; color: var(--ink-2); font-size: clamp(1.125rem, 1.6vw, 1.375rem); line-height: 1.45; letter-spacing: -0.004em; }
.hero .eyebrow { margin-bottom: 24px; }
.actions { display: flex; gap: 14px; justify-content: center; margin-top: 32px; }
.fineprint { margin-top: 24px; color: var(--ink-3); font-size: 0.8125rem; }
.hero-media { margin-top: 64px; border-radius: 32px; overflow: hidden; background: #000; text-align: left; }
.facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; padding: 8px 48px 40px; }
.facts strong { display: block; color: #f5f5f7; font-weight: 600; font-size: 2.5rem; line-height: 1.15; letter-spacing: -0.025em; }
.facts > div > span { color: #9a9ea9; font-size: 0.9375rem; }
.show-sm { display: none; }

/* ---- bands & cards --------------------------------------------------------- */
.band { padding: 120px 0; }
.band-tint { background: var(--bg); }
.band-dark { background: #000; color: #f5f5f7; }
.band-dark .eyebrow { color: #8cb2ff; }
.band-dark .sub { color: #a1a6b3; }
.card { background: var(--panel); border-radius: 28px; padding: 36px; }
.card-tint { background: var(--bg); }

.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.step { display: grid; align-content: start; gap: 14px; border-radius: 24px; padding: 32px 32px 36px; }
.step p, .product p, .service p, .protocol > p { color: var(--ink-2); line-height: 1.5; }
.num { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 999px; background: var(--soft); color: var(--primary-ink); font-weight: 600; font-size: 0.9375rem; }

/* rails: a grid on desktop, a swipeable carousel on phones */
.rail { max-width: calc(var(--wrap) + 2 * var(--gutter)); margin: 0 auto; padding: 0 var(--gutter); display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service { display: flex; flex-direction: column; overflow: hidden; border-radius: 28px; background: var(--bg); }
.service img { aspect-ratio: 3 / 2; object-fit: cover; background: #000; }
.service-body { flex: 1; display: flex; flex-direction: column; gap: 12px; padding: 28px 32px 32px; }
.service-body h3 { font-size: 1.625rem; }
.service-body .link { margin-top: auto; padding-top: 4px; }
.tag { display: flex; align-items: center; gap: 8px; color: var(--primary-ink); font-weight: 600; font-size: 0.8125rem; letter-spacing: 0.03em; }

.products { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product { display: flex; flex-direction: column; gap: 16px; padding: 36px 32px; }
.product h3 { font-size: 1.875rem; letter-spacing: -0.02em; }
.product .link { margin-top: auto; }   /* keep the actions on one line across cards */
.product p { font-size: 1.0625rem; }
.product-top { display: flex; align-items: center; justify-content: space-between; }
.icon-tile { display: grid; place-items: center; width: 52px; height: 52px; border-radius: 14px; background: var(--soft); color: var(--primary); }
.status { padding: 6px 12px; border-radius: 999px; background: var(--bg); box-shadow: inset 0 0 0 1px var(--line); color: var(--ink-2); font-weight: 500; font-size: 0.8125rem; }

.gallery { grid-template-columns: repeat(2, 1fr); gap: 48px 24px; }
.gallery figure { margin: 0; display: grid; gap: 14px; align-content: start; }   /* start: equal-height cards must not spread their rows */
.gallery img { aspect-ratio: 3 / 2; object-fit: cover; border-radius: 24px; box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08); }
.gallery figcaption { display: grid; gap: 4px; }
.gallery strong { font-weight: 600; font-size: 1.375rem; letter-spacing: -0.01em; }
.gallery figcaption span { color: #a1a6b3; }

/* ---- protocol & FAQ --------------------------------------------------------- */
.split { display: grid; grid-template-columns: 480px 1fr; gap: 64px; align-items: start; }
.protocol { display: grid; gap: 20px; }
table { width: 100%; border-collapse: collapse; background: var(--panel); border-radius: 16px; overflow: hidden; font-size: 1rem; }
th, td { padding: 14px 20px; text-align: left; }
thead th { color: var(--ink-3); font-weight: 600; font-size: 0.8125rem; }
tbody th { font-weight: 500; }
tbody td { color: var(--ink-2); }
tbody tr { box-shadow: inset 0 1px 0 var(--line); }
.faq { border-bottom: 1px solid var(--line); }
.faq details { border-top: 1px solid var(--line); }
.faq summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 24px 0; cursor: pointer; list-style: none;
  font-weight: 600; font-size: 1.1875rem; letter-spacing: -0.008em; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; flex: none; width: 9px; height: 9px; margin-right: 6px; border: solid var(--ink-2); border-width: 0 2px 2px 0;
  transform: translateY(-3px) rotate(45deg); transition: transform 300ms var(--spring); }
.faq details[open] summary::after { transform: translateY(2px) rotate(-135deg); }
.answer { overflow: hidden; }
.answer p { padding-bottom: 24px; color: var(--ink-2); line-height: 1.55; }

/* ---- contact -------------------------------------------------------------- */
/* The Cal.com embed sizes its own iframe; reserve space so the page doesn't jump when it loads.
   Cal centres its 1040px booker inside the iframe, so cap the width to keep it left-aligned with the heading. */
.cal { min-height: 540px; max-width: 1040px; }
.cal noscript a { color: var(--primary-ink); }
/* ---- footer ------------------------------------------------------------------ */
.footer { background: var(--bg); box-shadow: inset 0 1px 0 var(--line); padding: 64px 0 32px; color: var(--ink-2); font-size: 0.875rem; }
.footer-col a, .footer-bottom a { color: inherit; text-decoration: none; transition: color 150ms ease; }
.footer-col a:hover, .footer-bottom a:hover { color: var(--ink); }
.footer-top { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.8fr) minmax(0, 1.3fr) minmax(0, 0.7fr); gap: 40px; padding-bottom: 48px; }
.footer-brand { display: grid; justify-items: start; align-content: start; gap: 16px; max-width: 340px; }
.footer-logo { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-size: 1.125rem; font-weight: 600; letter-spacing: -0.015em; }
.footer-brand p { margin: 0; line-height: 1.55; }
.footer-col h2 { margin: 0 0 16px; color: var(--ink); font-size: 0.8125rem; font-weight: 600; letter-spacing: 0; }
.footer-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.contact-details li { display: grid; grid-template-columns: 16px 1fr; align-items: start; gap: 10px; }
.contact-details svg { margin-top: 2px; color: var(--ink-3); }
.contact-details address { font-style: normal; line-height: 1.5; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 24px; box-shadow: inset 0 1px 0 var(--line); color: var(--ink-3); font-size: 0.8125rem; }
.footer-bottom p { margin: 0; }
.footer-bottom a { display: inline-flex; align-items: center; gap: 6px; }

/* ---- phone action bar --------------------------------------------------------- */
.action-bar { display: none; }

/* ---- reveal on scroll (content is visible without JS) -------------------------- */
.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity 600ms var(--spring), transform 600ms var(--spring); }
.js .reveal.is-in { opacity: 1; transform: none; }

/* ---- tablet ------------------------------------------------------------------- */
/* ---- supported by ------------------------------------------------------------ */
.supporters { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.supporters li { display: grid; grid-template-rows: auto 1fr; justify-items: center; gap: 24px; padding: 40px 24px 32px; border-radius: 24px; background: var(--bg); text-align: center; }
.supporters .mark { display: grid; place-items: center; width: 100%; height: 96px; }
.supporters img { display: block; width: auto; height: 88px; max-width: 100%; object-fit: contain; opacity: 0.86; }
.supporters img.wide { height: auto; width: min(100%, 200px); }
.supporters .name { white-space: nowrap; color: var(--ink-2); font-size: 0.875rem; line-height: 1.4; letter-spacing: -0.003em; }

@media (max-width: 1100px) {
  .nav-inner { padding: 0 var(--gutter); }
  .nav-links { gap: 22px; }
  .split { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 1000px) {
  .supporters { grid-template-columns: repeat(2, 1fr); }
  .products { grid-template-columns: 1fr; }
}

/* ---- phone -------------------------------------------------------------------- */
@media (max-width: 860px) {
  :root { --nav-h: 56px; }
  .nav-actions { display: none; }
  .menu-btn { display: grid; place-items: center; margin-left: auto; }
  .brand { font-size: 1.125rem; }
  .nav-links { position: absolute; top: var(--nav-h); left: 0; right: 0; flex-direction: column; gap: 0; padding: 8px var(--gutter) 20px;
    background: rgba(255, 255, 255, 0.97); -webkit-backdrop-filter: saturate(180%) blur(20px); backdrop-filter: saturate(180%) blur(20px);
    box-shadow: inset 0 -1px 0 var(--line), 0 12px 24px rgba(31, 36, 48, 0.06);
    transform-origin: top; transform: translateY(-8px); opacity: 0; visibility: hidden;
    transition: transform 300ms var(--spring), opacity 200ms ease, visibility 0s 300ms; }
  .nav.is-open .nav-links { transform: none; opacity: 1; visibility: visible; transition: transform 300ms var(--spring), opacity 200ms ease; }
  .nav-links a { padding: 14px 0; font-size: 1.0625rem; color: var(--ink); box-shadow: inset 0 -1px 0 var(--line); }
}

@media (max-width: 760px) {
  .band { padding: 72px 0; }
  .heading { margin-bottom: 32px; gap: 12px; }
  .eyebrow { font-size: 0.9375rem; }
  h3 { font-size: 1.25rem; }
  .card { padding: 24px 20px; border-radius: 24px; }

  .hero { padding: 48px 0; text-align: left; }
  .hero .lede { margin-left: 0; }
  .actions { flex-direction: column; }
  .hide-sm { display: none; }
  .show-sm { display: inline; }
  .hero-media { margin-top: 36px; border-radius: 24px; }
  .facts { gap: 12px; padding: 4px 20px 24px; }
  .facts strong { font-size: 1.25rem; letter-spacing: -0.02em; }
  .facts > div > span { font-size: 0.75rem; }


  .supporters { grid-template-columns: 1fr 1fr; gap: 12px; }
  .supporters li { gap: 16px; padding: 28px 10px 22px; border-radius: 20px; }
  .supporters .mark { height: 72px; }
  .supporters img { height: 64px; }
  .supporters .name { font-size: 0.78rem; }

  .steps { grid-template-columns: 1fr; gap: 12px; }
  .step { grid-template-columns: 32px 1fr; column-gap: 16px; row-gap: 6px; padding: 20px; border-radius: 20px; }
  .step .num { grid-row: span 2; }
  .step h3 { font-size: 1.125rem; }
  .step p { font-size: 0.9375rem; }

  /* swipeable rails: native momentum + snap */
  .rail { display: flex; gap: 12px; overflow-x: auto; scroll-snap-type: x mandatory; scroll-padding: 0 var(--gutter);
    overscroll-behavior-x: contain; scrollbar-width: none; padding-bottom: 4px; }
  .rail::-webkit-scrollbar { display: none; }
  .rail > * { flex: 0 0 min(300px, 80vw); scroll-snap-align: start; }
  .service-body { padding: 20px 20px 24px; }
  .service-body h3 { font-size: 1.3125rem; }
  .gallery strong { font-size: 1.125rem; }

  .products { grid-template-columns: 1fr; gap: 12px; }
  .product { padding: 24px; }
  .product h3 { font-size: 1.625rem; }
  .icon-tile { width: 44px; height: 44px; border-radius: 12px; }

  th, td { padding: 12px 14px; font-size: 0.9375rem; }
  .faq summary { font-size: 1.0625rem; padding: 20px 0; }

  .cal { min-height: 600px; }

  .footer { padding-bottom: calc(32px + env(safe-area-inset-bottom)); }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 36px 24px; padding-bottom: 36px; }
  .footer-brand, .footer-col:nth-child(3) { grid-column: 1 / -1; }
  .footer-col:nth-child(3) { order: 1; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 12px; }

  .action-bar { display: block; position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
    padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
    background: rgba(255, 255, 255, 0.75); -webkit-backdrop-filter: saturate(180%) blur(24px); backdrop-filter: saturate(180%) blur(24px);
    box-shadow: inset 0 1px 0 var(--line); transform: translateY(110%); transition: transform 400ms var(--spring); }
  .action-bar.is-shown { transform: none; }
  .action-bar .btn { width: 100%; }
}

/* ---- accessibility preferences --------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { transform: none; transition: opacity 200ms ease; }
  .btn, .link::after, .menu-btn path, .faq summary::after { transition: none; }
  .nav-links, .action-bar { transition: opacity 200ms ease !important; }
}
@media (prefers-reduced-transparency: reduce) {
  .nav, .nav-links, .action-bar { background: #fff; -webkit-backdrop-filter: none; backdrop-filter: none; }
}
@media (prefers-contrast: more) {
  :root { --ink-2: #3c4250; --ink-3: #5b6270; --line: #b9bec8; }
}