/* =========================================================================
   AmiritQ — Medical Device Quality & Regulatory
   Global design system + section styles
   Clinical-premium: navy + deep teal, Fraunces + Inter, Allura wordmark
   ========================================================================= */

:root{
  /* Colour — 60 / 30 / 10 */
  --bg:#FBFCFD;
  --surface:#FFFFFF;
  --surface-alt:#F4F7F9;
  --navy:#0E2A43;
  --navy-deep:#0B2033;
  --ink:#1B2B36;
  --muted:#5A6B78;
  --accent:#0F766E;
  --accent-hover:#0B5A54;
  --accent-tint:#E7F2F0;
  --hairline:#E6EBEF;
  --hairline-strong:#D5DEE4;

  /* Typography */
  --font-display:'Fraunces',Georgia,'Times New Roman',serif;
  --font-body:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;
  --font-script:'Allura',cursive;

  /* Spacing scale (8px base) */
  --s-1:4px;  --s-2:8px;  --s-3:12px; --s-4:16px; --s-5:24px;
  --s-6:32px; --s-7:48px; --s-8:64px; --s-9:96px; --s-10:128px; --s-11:160px;

  /* Radius */
  --r-sm:4px; --r-md:8px; --r-lg:12px;

  /* Layout */
  --container:1200px;
  --gutter:24px;
  --header-h:76px;

  /* Motion */
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ------------------------------- Reset --------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 16px);-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font-body);font-size:1.0625rem;line-height:1.7;
  font-weight:400;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}

/* --------------------------- Typography -------------------------------- */
h1,h2,h3,h4{font-family:var(--font-display);color:var(--navy);font-weight:500;line-height:1.12;margin:0;letter-spacing:-.01em}
h1{font-size:clamp(2.6rem,5vw,4rem);letter-spacing:-.02em}
h2{font-size:clamp(2rem,3.4vw,2.75rem)}
h3{font-size:1.375rem}
p{margin:0 0 1.1em}
.lead{font-size:clamp(1.125rem,1.6vw,1.3rem);color:var(--muted);line-height:1.6}
.eyebrow{
  font-family:var(--font-body);font-size:.8125rem;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--accent);
  margin:0 0 var(--s-4);display:inline-flex;align-items:center;gap:10px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--accent);opacity:.6}

/* ---------------------------- Layout ----------------------------------- */
.container{max-width:var(--container);margin:0 auto;padding:0 var(--gutter)}
.section{padding:clamp(64px,10vw,128px) 0}
.section--alt{background:var(--surface-alt);border-top:1px solid var(--hairline);border-bottom:1px solid var(--hairline)}
.section__head{max-width:720px;margin:0 0 var(--s-8)}
.section__head.center{margin-left:auto;margin-right:auto;text-align:center}
.section__head .lead{margin-top:var(--s-4)}

/* ---------------------------- Buttons ---------------------------------- */
.btn{
  --btn-h:52px;
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:var(--btn-h);padding:0 32px;border-radius:var(--r-sm);
  font-size:.9375rem;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .25s var(--ease),background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.btn i{font-style:normal}
.btn--primary{background:var(--navy);color:#fff}
.btn--primary:hover{background:var(--navy-deep);transform:translateY(-1px);box-shadow:0 10px 24px -12px rgba(14,42,67,.55)}
.btn--accent{background:var(--accent);color:#fff}
.btn--accent:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 10px 24px -12px rgba(15,118,110,.55)}
.btn--ghost{background:transparent;color:var(--navy);border-color:var(--hairline-strong)}
.btn--ghost:hover{border-color:var(--navy);background:var(--navy);color:#fff;transform:translateY(-1px)}
.btn--sm{--btn-h:44px;padding:0 22px;font-size:.875rem}

/* --------------------------- Header ------------------------------------ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;height:var(--header-h);
  display:flex;align-items:center;
  transition:background .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.scrolled{background:rgba(251,252,253,.88);backdrop-filter:saturate(140%) blur(10px);border-bottom-color:var(--hairline);box-shadow:0 1px 20px -14px rgba(14,42,67,.5)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;width:100%}
.brand{display:inline-flex;align-items:baseline;gap:2px;line-height:1}
.brand__mark{font-family:var(--font-script);font-size:2.35rem;color:var(--navy);line-height:.8;transition:color .35s var(--ease),transform .35s var(--ease);transform-origin:left center;display:inline-block}
.brand:hover .brand__mark{color:var(--accent);transform:scale(1.04)}
.nav{display:flex;align-items:center;gap:var(--s-6)}
.nav__links{display:flex;gap:var(--s-5);list-style:none;margin:0;padding:0}
.nav__links a{
  position:relative;font-size:.9375rem;font-weight:500;color:var(--ink);padding:6px 0;
}
.nav__links a::after{content:"";position:absolute;left:0;bottom:0;height:1.5px;width:0;background:var(--accent);transition:width .3s var(--ease)}
.nav__links a:hover{color:var(--navy)}
.nav__links a:hover::after{width:100%}
.nav__toggle{display:none;background:none;border:0;color:var(--navy);font-size:1.6rem;cursor:pointer;padding:6px}

/* ----------------------------- Hero ------------------------------------ */
.hero{position:relative;padding:calc(var(--header-h) + clamp(56px,9vw,120px)) 0 clamp(64px,9vw,120px);overflow:hidden}
.hero::before{ /* fine grid */
  content:"";position:absolute;inset:0;z-index:0;opacity:.5;
  background-image:linear-gradient(var(--hairline) 1px,transparent 1px),linear-gradient(90deg,var(--hairline) 1px,transparent 1px);
  background-size:46px 46px;
  -webkit-mask-image:radial-gradient(120% 80% at 78% 12%,#000 0%,transparent 62%);
  mask-image:radial-gradient(120% 80% at 78% 12%,#000 0%,transparent 62%);
}
.hero::after{ /* soft accent glow */
  content:"";position:absolute;top:-18%;right:-8%;width:60vw;height:60vw;max-width:760px;max-height:760px;z-index:0;
  background:radial-gradient(closest-side,rgba(15,118,110,.10),transparent 70%);
}
.hero .container{position:relative;z-index:1}
.hero__inner{max-width:820px}
.hero h1{margin-bottom:var(--s-5)}
.hero .lead{max-width:660px;margin-bottom:var(--s-7)}
.hero__cta{display:flex;flex-wrap:wrap;gap:var(--s-3);margin-bottom:var(--s-7)}
.hero__trust{display:flex;align-items:center;gap:var(--s-3);color:var(--muted);font-size:.9rem;flex-wrap:wrap}
.hero__trust .label{font-weight:600;letter-spacing:.06em;text-transform:uppercase;font-size:.75rem;color:var(--muted)}
.hero__trust .names{color:var(--navy);font-weight:500}
/* Centered portrait-led hero */
.hero--centered .hero__inner{max-width:720px;margin:0 auto;text-align:center}
.hero--centered .eyebrow,.hero--centered .hero__cta,.hero--centered .hero__trust{justify-content:center}
.hero--centered .lead{margin-left:auto;margin-right:auto}
.hero__portrait{width:270px;margin:0 auto var(--s-6)}
.hero__portrait img{width:100%;height:auto;display:block;border-radius:12px;box-shadow:0 30px 60px -30px rgba(14,42,67,.45)}
.hero--centered .hero__trust{flex-direction:column;gap:var(--s-3)}
.logo-strip{display:flex;align-items:center;justify-content:center;gap:clamp(22px,4vw,42px);flex-wrap:wrap}
.logo-strip__img{height:24px;display:inline-block;background-color:var(--navy);-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;-webkit-mask-position:center;mask-position:center;-webkit-mask-size:contain;mask-size:contain;transition:background-color .3s var(--ease),transform .3s var(--ease);cursor:pointer}
.logo-strip__img:hover{background-color:var(--accent);transform:scale(1.14)}

/* About as single centered column (portrait now lives in the hero) */
.about-single{max-width:820px;margin:0 auto}

/* ---------------------- Divider (soft curve) --------------------------- */
.divider{display:block;width:100%;height:auto;color:var(--surface-alt)}

/* --------------------------- Insight band ------------------------------ */
.insight{background:var(--navy);color:#fff;padding:clamp(56px,8vw,96px) 0}
.insight h2{color:#fff;max-width:900px}
.insight p{color:rgba(255,255,255,.78);max-width:760px;margin-top:var(--s-4);font-size:1.075rem}
.insight .accent{color:#8FD6CB}
.insight__grid{display:grid;grid-template-columns:1.5fr minmax(0,300px);gap:clamp(28px,5vw,56px);align-items:center}
.insight__grid h2{max-width:none}
.insight__media{margin:0}
.insight__media img{width:100%;max-width:340px;height:auto;display:block;margin-inline:auto;border-radius:10px;border:1px solid rgba(255,255,255,.16)}

/* Feature images placed within sections (kept modest — supporting, not dominant) */
.expertise-head{display:grid;grid-template-columns:1.5fr minmax(0,300px);gap:clamp(28px,5vw,56px);align-items:center;margin-bottom:var(--s-8)}
.expertise-head .section__head{margin-bottom:0}
.feat-img{margin:0}
.feat-img img{width:100%;max-width:340px;height:auto;display:block;margin-inline:auto;border-radius:10px;box-shadow:0 24px 48px -30px rgba(14,42,67,.35)}
.approach-banner{margin:var(--s-8) auto 0;max-width:340px;position:relative}
.approach-banner img,.approach-banner video{width:100%;height:auto;display:block;border-radius:10px;box-shadow:0 26px 52px -32px rgba(14,42,67,.4)}
.approach-banner video{aspect-ratio:9 / 16;object-fit:cover;background:var(--navy)}
.approach-banner video img{box-shadow:none;border-radius:0}
.approach-banner .approach-video__end{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:10px;box-shadow:none;opacity:0;pointer-events:none;transition:opacity .6s var(--ease)}
.approach-banner.is-ended .approach-video__end{opacity:1}

/* ---------------------------- About ------------------------------------ */
.about__grid{display:grid;grid-template-columns:auto 1fr;gap:clamp(28px,5vw,64px);align-items:start}
.about__media{width:220px;max-width:100%}
.about__photo{position:relative}
.about__photo img{width:100%;height:auto;display:block;border-radius:10px;position:relative;z-index:1;box-shadow:0 24px 48px -30px rgba(14,42,67,.4)}
.about__photo::before{content:"";position:absolute;right:-12px;bottom:-12px;width:60%;height:60%;background:var(--accent-tint);border-radius:10px;z-index:0}
.about__body .eyebrow{margin-top:0}
.about__role{color:var(--accent);font-weight:600;font-size:.95rem;letter-spacing:.02em;margin:0 0 var(--s-5)}
.about__body p{color:var(--ink)}
.about__creds{margin-top:var(--s-6);padding-top:var(--s-6);border-top:1px solid var(--hairline)}
.about__creds h4{font-family:var(--font-body);font-size:.8125rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:600;margin:0 0 var(--s-4)}
.chips{display:flex;flex-wrap:wrap;gap:var(--s-2)}
.chip{
  display:inline-flex;align-items:center;gap:7px;background:var(--accent-tint);color:var(--accent-hover);
  border-radius:100px;padding:8px 14px;font-size:.8125rem;font-weight:600;
}
.chip i{font-style:normal;color:var(--accent)}

/* -------------------------- Expertise cards ---------------------------- */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--s-4)}
.card{
  background:var(--surface);border:1px solid var(--hairline);border-radius:var(--r-md);
  padding:var(--s-6);transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--accent);box-shadow:0 20px 40px -28px rgba(14,42,67,.45)}
.card__icon{
  width:48px;height:48px;border-radius:var(--r-sm);background:var(--accent-tint);color:var(--accent);
  display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:var(--s-5);
}
.card h3{margin-bottom:var(--s-3)}
.card p{color:var(--muted);font-size:1rem;margin:0}

/* --------------------------- Approach steps ---------------------------- */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:var(--s-5);counter-reset:step}
.step{position:relative;padding-top:var(--s-6)}
.step::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  font-family:var(--font-display);font-size:2.4rem;font-weight:500;color:var(--accent);opacity:.9;display:block;margin-bottom:var(--s-3);line-height:1;
}
.step::after{content:"";position:absolute;top:12px;left:0;width:40px;height:2px;background:var(--hairline-strong)}
.step h3{font-size:1.2rem;margin-bottom:var(--s-2)}
.step p{color:var(--muted);font-size:.975rem;margin:0}

/* --------------------------- Environments ------------------------------ */
.env-section{border-top:1px solid var(--hairline)}
.env-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:var(--s-4)}
.env-card{position:relative;margin:0;border-radius:10px;overflow:hidden;aspect-ratio:4/3;background:var(--navy)}
.env-card img{width:100%;height:100%;object-fit:cover;display:block;filter:grayscale(1) contrast(1.03);transition:filter .55s var(--ease),transform .6s var(--ease)}
.env-card::after{content:"";position:absolute;inset:0;z-index:1;background:var(--navy);mix-blend-mode:color;opacity:.82;transition:opacity .55s var(--ease);pointer-events:none}
.env-card::before{content:"";position:absolute;inset:0;z-index:2;background:linear-gradient(to top,rgba(11,32,51,.82),rgba(11,32,51,0) 55%);pointer-events:none}
.env-card__label{position:absolute;z-index:3;left:var(--s-5);right:var(--s-5);bottom:var(--s-5);margin:0;color:#fff;font-family:var(--font-display);font-size:1.2rem;font-weight:500;letter-spacing:-.01em}
.env-card:hover img{filter:none;transform:scale(1.05)}
.env-card:hover::after{opacity:0}

/* --------------------------- Credibility ------------------------------- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:var(--s-5);margin-bottom:var(--s-8)}
.stat{border-left:2px solid var(--accent);padding-left:var(--s-4)}
.stat__num{font-family:var(--font-display);font-size:clamp(2.4rem,4vw,3.2rem);font-weight:500;color:var(--navy);line-height:1;letter-spacing:-.02em}
.stat__label{color:var(--muted);font-size:.9rem;margin-top:var(--s-2)}
.certs{display:flex;flex-wrap:wrap;gap:var(--s-3);align-items:center;padding-top:var(--s-6);border-top:1px solid var(--hairline)}
.certs .label{font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:600;margin-right:var(--s-3)}
.cert{font-weight:600;color:var(--navy);font-size:.9rem;display:inline-flex;align-items:center;gap:8px}
.cert i{font-style:normal;color:var(--accent)}
.cert + .cert::before{content:"·";color:var(--hairline-strong);margin-right:var(--s-3);font-weight:400}

/* ------------------------------- FAQ ----------------------------------- */
.faq{max-width:820px;margin:0 auto}
.faq__item{border-bottom:1px solid var(--hairline)}
.faq__item summary{
  list-style:none;cursor:pointer;padding:var(--s-5) 0;display:flex;justify-content:space-between;align-items:center;gap:var(--s-4);
  font-family:var(--font-display);font-size:1.2rem;color:var(--navy);font-weight:500;
}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary .plus{flex:0 0 auto;width:26px;height:26px;position:relative;transition:transform .3s var(--ease)}
.faq__item summary .plus::before,.faq__item summary .plus::after{content:"";position:absolute;background:var(--accent);border-radius:2px}
.faq__item summary .plus::before{top:12px;left:4px;right:4px;height:2px}
.faq__item summary .plus::after{left:12px;top:4px;bottom:4px;width:2px;transition:transform .3s var(--ease)}
.faq__item[open] summary .plus::after{transform:scaleY(0)}
.faq__item[open] summary .plus{transform:rotate(90deg)}
.faq__answer{padding:0 0 var(--s-5);color:var(--muted);max-width:680px}
.faq__answer p{margin:0}

/* ----------------------------- Contact --------------------------------- */
.contact__grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,6vw,72px);align-items:start}
.contact__intro h2{margin-bottom:var(--s-4)}
.contact__intro .lead{margin-bottom:var(--s-6)}
.contact__links{display:flex;flex-direction:column;gap:var(--s-3)}
.contact__link{display:inline-flex;align-items:center;gap:12px;font-weight:500;color:var(--navy)}
.contact__link i{font-style:normal;color:var(--accent);width:22px;text-align:center;font-size:1.2rem}
.contact__link:hover{color:var(--accent)}
.form{background:var(--surface);border:1px solid var(--hairline);border-radius:var(--r-lg);padding:clamp(24px,4vw,40px)}
.field{margin-bottom:var(--s-4)}
.field label{display:block;font-size:.8125rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);margin-bottom:var(--s-2)}
.field input,.field textarea{
  width:100%;font-family:inherit;font-size:1rem;color:var(--ink);background:var(--bg);
  border:1px solid var(--hairline-strong);border-radius:var(--r-sm);padding:13px 15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-tint)}
.field textarea{resize:vertical;min-height:120px}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form__note{font-size:.85rem;color:var(--muted);margin:var(--s-3) 0 0}
.form__status{margin-top:var(--s-4);font-size:.95rem;font-weight:500}
.form__status.ok{color:var(--accent-hover)}
.form__status.err{color:#B4453A}

/* ----------------------------- Footer ---------------------------------- */
.site-footer{background:var(--navy);color:rgba(255,255,255,.72);padding:var(--s-8) 0 var(--s-6)}
.site-footer .container{display:flex;flex-wrap:wrap;justify-content:space-between;gap:var(--s-5);align-items:flex-start}
.site-footer .brand__mark{color:#fff}
.footer__tag{max-width:320px;margin-top:var(--s-3);font-size:.95rem;line-height:1.6}
.footer__links{display:flex;gap:var(--s-5);flex-wrap:wrap}
.footer__links a{color:rgba(255,255,255,.72);font-size:.95rem}
.footer__links a:hover{color:#fff}
.site-footer__bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:var(--s-6);padding-top:var(--s-5);font-size:.85rem;color:rgba(255,255,255,.55)}

/* --------------------------- Scroll reveal ----------------------------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------------------------- Responsive ------------------------------- */
@media (max-width:860px){
  .about__grid,.contact__grid,.insight__grid,.expertise-head{grid-template-columns:1fr}
  .nav__links,.nav .btn{display:none}
  .nav__toggle{display:block}
  .nav.open .nav__links{
    display:flex;flex-direction:column;position:absolute;top:var(--header-h);left:0;right:0;
    background:var(--surface);border-bottom:1px solid var(--hairline);padding:var(--s-5) var(--gutter);gap:var(--s-4);box-shadow:0 20px 30px -24px rgba(14,42,67,.5);
  }
  .nav.open .btn{display:inline-flex;margin-top:var(--s-2)}
}

/* --------------------- Reduced-motion / print -------------------------- */
@media (prefers-reduced-motion:reduce){
  *{scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none;transition:none}
  .btn:hover,.card:hover{transform:none}
}