/* ==========================================================================
   Convergent Robotics — shared stylesheet
   Palette, type scale and components. Edit tokens in :root to restyle.
   ========================================================================== */

:root{
  /* Colour tokens */
  --ink:#08182B;          /* headings, dark sections */
  --deep:#0E3055;         /* secondary dark */
  --signal:#2F6BE0;       /* the one accent — links, marks, active states */
  --signal-deep:#1B4CB0;  /* accent hover */
  --graphite:#54677C;     /* body text on light */
  --mist:#E4ECF5;         /* rules, panels */
  --mist-deep:#C9D8E8;    /* stronger rules */
  --paper:#FCFDFE;        /* page background */
  --white:#FFFFFF;

  /* Type */
  --sans:"IBM Plex Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  /* Rhythm */
  --measure:68ch;
  --gutter:clamp(1.25rem,5vw,4rem);
  --section:clamp(3.5rem,8vw,7rem);
  --radius:3px;
}

*,*::before,*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

body{
  margin:0;
  background:var(--paper);
  color:var(--graphite);
  font-family:var(--sans);
  font-size:clamp(1rem,0.96rem + 0.2vw,1.0625rem);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}

/* ---------- Layout helpers ---------- */
.wrap{width:100%;max-width:1180px;margin-inline:auto;padding-inline:var(--gutter)}
.narrow{max-width:760px}
.section{padding-block:var(--section)}
.section--tight{padding-block:calc(var(--section) * .6)}
.stack > * + *{margin-top:1.1em}

/* ---------- Type ---------- */
h1,h2,h3,h4{color:var(--ink);font-weight:600;line-height:1.15;letter-spacing:-0.02em;margin:0 0 .6em}
h1{font-size:clamp(2.25rem,1.6rem + 3.2vw,4rem);letter-spacing:-0.035em}
h2{font-size:clamp(1.6rem,1.3rem + 1.5vw,2.4rem);letter-spacing:-0.028em}
h3{font-size:clamp(1.15rem,1.05rem + .5vw,1.45rem);letter-spacing:-0.02em}
h4{font-size:1.0625rem;letter-spacing:-0.01em}
p{margin:0 0 1.1em;max-width:var(--measure)}
.lead{font-size:clamp(1.125rem,1.05rem + .5vw,1.375rem);line-height:1.55;color:var(--deep)}
strong{color:var(--ink);font-weight:600}

a{color:var(--signal);text-decoration:none;border-bottom:1px solid rgba(47,107,224,.28);transition:border-color .18s ease,color .18s ease}
a:hover{color:var(--signal-deep);border-bottom-color:var(--signal-deep)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--signal);outline-offset:3px;border-radius:2px}

/* Mono utility label — used for eyebrows, nav, captions, data */
.label{
  font-family:var(--mono);font-size:.72rem;font-weight:500;
  letter-spacing:.14em;text-transform:uppercase;color:var(--signal);
  display:block;margin-bottom:1rem;
}
.label--quiet{color:var(--graphite)}

/* ---------- Header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(252,253,254,.88);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--mist);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:1rem;height:68px}
.brand{min-width:0;flex:0 1 auto}
.brand{display:inline-flex;align-items:center;color:var(--ink);border:0;line-height:0}
.brand img{display:block;flex:none;height:33px;width:auto;max-width:min(58vw,240px);object-fit:contain}
.brand:hover img{opacity:.72;transition:opacity .18s ease}
.site-footer .brand img{height:28px}
.nav-links{display:flex;align-items:center;gap:2rem;list-style:none;margin:0;padding:0}
.nav-links a{
  font-family:var(--mono);font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--graphite);border:0;padding-block:.35rem;
}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--ink)}
.nav-links a[aria-current="page"]{box-shadow:inset 0 -2px 0 var(--signal)}
.nav-toggle{display:none;background:none;border:1px solid var(--mist-deep);border-radius:var(--radius);
  padding:.5rem .7rem;font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--ink);cursor:pointer}

@media (max-width:760px){
  .brand img{height:22px;max-width:52vw}
  .nav-toggle{display:block}
  .nav-links{
    position:absolute;left:0;right:0;top:68px;flex-direction:column;align-items:flex-start;gap:0;
    background:var(--white);border-bottom:1px solid var(--mist);padding:.5rem var(--gutter) 1.25rem;
    display:none;
  }
  .nav-links.is-open{display:flex}
  .nav-links li{width:100%}
  .nav-links a{display:block;padding:.85rem 0;border-bottom:1px solid var(--mist)}
}

/* ---------- Signature visual: damped harmonics ---------- */
.cv{width:100%;height:auto;display:block;overflow:visible}
.cv-wave{fill:none;stroke:var(--signal);stroke-width:2.2;stroke-linecap:round;
  vector-effect:non-scaling-stroke}
.cv--divider .cv-wave{stroke-width:1.8}
.cv--divider{opacity:.8}

@media (prefers-reduced-motion:no-preference){
  .cv-wave{stroke-dasharray:2600;stroke-dashoffset:2600;
    animation:cvdraw 1.6s cubic-bezier(.22,.61,.36,1) both}
  .cv-wave--static{animation:none;stroke-dashoffset:0}
}
@keyframes cvdraw{to{stroke-dashoffset:0}}
@media (prefers-reduced-motion:reduce){
  .cv-wave{animation:none;stroke-dashoffset:0}
}

.divider{border:0;border-top:1px solid var(--mist);margin:0}

/* ---------- Hero ---------- */
.hero{padding-block:clamp(3rem,7vw,6rem) clamp(2rem,4vw,3rem)}
.hero h1{max-width:16ch}
.hero .lead{max-width:60ch;margin-top:1.5rem}
.hero-band{margin-top:clamp(2.5rem,5vw,4rem)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.55rem;
  font-family:var(--mono);font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;
  padding:.85rem 1.35rem;border-radius:var(--radius);border:1px solid var(--signal);
  background:var(--signal);color:var(--white);cursor:pointer;
  transition:background .18s ease,border-color .18s ease,transform .18s ease;
}
.btn:hover{background:var(--signal-deep);border-color:var(--signal-deep);color:var(--white)}
.btn--ghost{background:transparent;color:var(--signal);border-color:var(--mist-deep)}
.btn--ghost:hover{background:transparent;color:var(--signal-deep);border-color:var(--signal)}
.btn-row{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:2rem}

/* ---------- Grids & cards ---------- */
.grid{display:grid;gap:clamp(1.5rem,3vw,2.5rem)}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}

.pillar{border-top:2px solid var(--signal);padding-top:1.25rem}
.pillar h3{margin-bottom:.5rem}
.pillar p{font-size:.98rem;margin-bottom:0}

.panel{background:var(--white);border:1px solid var(--mist);border-radius:var(--radius);padding:clamp(1.5rem,3vw,2.25rem)}
.panel--dark{background:var(--ink);border-color:var(--ink);color:#B9C9DA}
.panel--dark h2,.panel--dark h3{color:var(--white)}
.panel--dark a{color:#8FB4F5;border-bottom-color:rgba(143,180,245,.35)}
.panel--dark .label{color:#8FB4F5}

/* Numbered roadmap — order carries meaning here */
.steps{list-style:none;margin:0;padding:0;counter-reset:step}
.steps li{
  counter-increment:step;position:relative;
  padding:1.5rem 0 1.5rem 4.25rem;border-top:1px solid var(--mist);
}
.steps li:last-child{border-bottom:1px solid var(--mist)}
.steps li::before{
  content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:1.5rem;
  font-family:var(--mono);font-size:.8rem;letter-spacing:.08em;color:var(--signal);
}
.steps h3{margin-bottom:.35rem}
.steps p{margin-bottom:0}

/* ---------- Article ---------- */
.article{max-width:72ch}
.article h2{margin-top:2.5em}
.article h3{margin-top:2em}
.article ul,.article ol{max-width:var(--measure);padding-left:1.25rem}
.article li{margin-bottom:.5em}
.article blockquote{
  margin:2rem 0;padding-left:1.5rem;border-left:2px solid var(--signal);
  font-size:1.1rem;line-height:1.5;color:var(--deep);font-style:normal;
}
.article-meta{font-family:var(--mono);font-size:.78rem;letter-spacing:.06em;color:var(--graphite);margin-bottom:2rem}
.crosspost{display:flex;flex-wrap:wrap;gap:.75rem;margin:2rem 0 0}

/* ---------- Forms ---------- */
.field{margin-bottom:1.5rem;max-width:38rem}
.field label{display:block;font-family:var(--mono);font-size:.75rem;letter-spacing:.1em;
  text-transform:uppercase;color:var(--ink);margin-bottom:.5rem}
.field input,.field textarea,.field select{
  width:100%;padding:.8rem .9rem;font-family:var(--sans);font-size:1rem;color:var(--ink);
  background:var(--white);border:1px solid var(--mist-deep);border-radius:var(--radius);
}
.field textarea{min-height:150px;resize:vertical}
.checks{display:grid;gap:.6rem;margin-top:.25rem}
.checks label{display:flex;gap:.7rem;align-items:flex-start;font-family:var(--sans);font-size:1rem;
  letter-spacing:0;text-transform:none;color:var(--graphite);margin:0;cursor:pointer}
.checks input{width:auto;margin-top:.3rem;accent-color:var(--signal)}
.form-note{font-size:.9rem;color:var(--graphite)}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--mist);padding-block:3rem;margin-top:var(--section)}
.footer-inner{display:flex;flex-wrap:wrap;gap:2rem;justify-content:space-between;align-items:flex-start}
.footer-links{display:flex;flex-wrap:wrap;gap:1.5rem;list-style:none;margin:0;padding:0}
.footer-links a{font-family:var(--mono);font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;
  color:var(--graphite);border:0}
.footer-links a:hover{color:var(--ink)}
.colophon{font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;color:var(--graphite)}

/* ---------- Reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(14px)}
.reveal.is-visible{opacity:1;transform:none;transition:opacity .6s ease,transform .6s cubic-bezier(.22,.61,.36,1)}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none}
}

.skip{position:absolute;left:-9999px}
.skip:focus{left:var(--gutter);top:.5rem;z-index:100;background:var(--white);padding:.6rem 1rem;border:1px solid var(--signal)}

/* Emphasized closing sentence within a paragraph */
.accent{color:var(--signal);font-weight:600}

/* ---------- Team: three across; rows aligned across all cards ----------
   Subgrid gives photo / name / role / bio / links each a shared row, so the
   link lists start on the same line regardless of bio length or link count.
   Flex fallback below for browsers without subgrid. ---------------------- */
.team-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(1.5rem,2.5vw,2.5rem);align-items:start}

.person-card{min-width:0;display:flex;flex-direction:column}

.person-card img{
  width:100%;height:auto;aspect-ratio:1/1;object-fit:cover;object-position:center top;
  border-radius:var(--radius);background:var(--mist);display:block;
  filter:grayscale(1) contrast(1.02);margin:0;
}
.person-card h3{margin:1.25rem 0 .1rem;font-size:1.1rem}
.person-card .role{font-family:var(--mono);font-size:.7rem;letter-spacing:.12em;
  text-transform:uppercase;color:var(--signal);margin:0 0 .9rem}
.person-card > p:not(.role){font-size:.92rem;line-height:1.6;max-width:none;margin:0}

.person-card .person-links{display:flex;flex-direction:column;align-items:flex-start;
  flex-wrap:nowrap;margin:0;padding:1.4rem 0 0;gap:.6rem;list-style:none}
.person-card .person-links li{margin:0}
.person-card .person-links a{font-family:var(--mono);font-size:.78rem;letter-spacing:.06em;
  border-bottom-color:var(--mist-deep);word-break:break-word}

@supports (grid-template-rows: subgrid){
  .team-grid{grid-template-rows:auto auto auto auto auto;align-items:stretch}
  .person-card{display:grid;grid-row:span 5;grid-template-rows:subgrid;gap:0}
}

@media (max-width:900px){.team-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:620px){
  .team-grid{grid-template-columns:1fr;gap:2.5rem}
  .person-card{display:flex;grid-row:auto}
  .person-card img{max-width:220px}
  .person-card .person-links{padding-top:1rem}
}

/* ---------- Newsletter signup ---------- */
.newsletter{max-width:44rem}
.newsletter-form{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:1.5rem;max-width:32rem}
.newsletter-form input[type=email]{
  flex:1 1 16rem;min-width:0;padding:.8rem .9rem;font-family:var(--sans);font-size:1rem;
  color:var(--ink);background:var(--white);border:1px solid var(--mist-deep);border-radius:var(--radius);
}
.newsletter-form .btn{flex:0 0 auto}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;
  clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media (max-width:520px){
  .newsletter-form{flex-direction:column}
  .newsletter-form .btn{width:100%;justify-content:center}
}