/* ============================================================
   Coldiron Technology Group — site styles
   Palette verified with scripts/contrast.mjs (WCAG AA, see DESIGN.md)
   ============================================================ */

:root{
  /* surfaces */
  --bg:#141019;            /* deep charcoal-plum page */
  --surface:#1A1524;       /* cards */
  --raised:#221B2E;        /* raised panels */
  --seam:#362B48;          /* decorative borders */
  --seam-strong:#756494;   /* interactive borders — 3.58:1 vs page (AA non-text) */

  /* text */
  --ink:#F2EEF8;           /* 16.42:1 */
  --frost:#D0C7DE;         /* 11.54:1 */
  --mist:#A093B4;          /*  6.55:1 */

  /* brand */
  --violet:#8B5CF6;        /* primary — graphics/fills only, 4.44:1 (not for text) */
  --violet-fill:#7048E8;   /* carries white text at 5.55:1 */
  --lavender:#C3B2FF;      /* accents + links — 9.96:1 */

  /* CTA */
  --amber:#F2A93B;         /* 9.40:1 on page; dark label on fill 9.40:1 */
  --amber-hot:#FFBF57;
  --on-amber:#141019;

  --radius:6px;
  --max:1120px;
  --focus:3px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--frost);
  font-family:'IBM Plex Sans',system-ui,-apple-system,sans-serif;
  font-size:16.5px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
h1,h2,h3{color:var(--ink);font-family:'Archivo',system-ui,sans-serif;margin:0 0 14px}
h1{font-weight:800;font-size:clamp(32px,5.4vw,52px);line-height:1.08;letter-spacing:-.022em}
h2{font-weight:800;font-size:clamp(25px,3.4vw,34px);line-height:1.18;letter-spacing:-.018em}
h3{font-weight:700;font-size:18.5px;letter-spacing:-.01em;margin-bottom:10px}
p{margin:0 0 16px}
a{color:var(--lavender)}
a:hover{color:var(--ink)}
.mono{font-family:'IBM Plex Mono',ui-monospace,monospace}

/* --- accessibility primitives --- */
.skip{
  position:absolute;left:-9999px;top:0;z-index:100;
  background:var(--amber);color:var(--on-amber);
  padding:12px 20px;font-weight:600;border-radius:0 0 var(--radius) 0;
}
.skip:focus{left:0}
/* Dual-tone focus ring: dark inner separates from any fill, amber outer
   contrasts against the page. Visible on every surface including the CTA. */
:focus-visible{
  outline:none;
  box-shadow:0 0 0 2px var(--bg), 0 0 0 calc(2px + var(--focus)) var(--amber);
  border-radius:3px;
}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.eyebrow{
  display:block;font-family:'IBM Plex Mono',ui-monospace,monospace;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--lavender);margin-bottom:14px;
}
.section-intro{color:var(--frost);max-width:62ch;font-size:17px}
.fineprint{font-size:13.5px;color:var(--mist)}

/* --- buttons --- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--amber);color:var(--on-amber);
  font-weight:600;font-size:15px;text-decoration:none;
  padding:13px 22px;border-radius:var(--radius);border:1px solid transparent;
  cursor:pointer;font-family:inherit;
  transition:background .15s ease,transform .15s ease;
}
.btn:hover{background:var(--amber-hot);color:var(--on-amber);transform:translateY(-1px)}
.btn.ghost{
  background:transparent;color:var(--lavender);
  border-color:var(--seam-strong);
}
.btn.ghost:hover{background:var(--raised);color:var(--ink);border-color:var(--lavender)}
.btn.violet{background:var(--violet-fill);color:#fff}
.btn.violet:hover{background:#7C5CFF;color:#fff}
.btn.small{padding:9px 16px;font-size:14px}
.btn[disabled]{opacity:.6;cursor:not-allowed;transform:none}

/* --- header --- */
header{
  position:sticky;top:0;z-index:50;
  background:rgba(20,16,25,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--seam);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;line-height:1.1}
.brand-seal{width:34px;height:34px;flex:none;display:block}
.brand-text{display:flex;flex-direction:column;gap:2px}
.brand-mark{
  font-family:'Archivo',sans-serif;font-weight:800;font-size:18px;
  letter-spacing:.055em;color:var(--ink);
}
.brand-tag{
  font-family:'IBM Plex Mono',ui-monospace,monospace;font-size:9.5px;
  color:var(--lavender);letter-spacing:.2em;
}
.links{display:flex;align-items:center;gap:26px}
.links a{
  color:var(--frost);text-decoration:none;font-size:15px;font-weight:500;
}
.links a:hover{color:var(--ink)}
.links a[aria-current="page"]{color:var(--lavender);text-decoration:underline;text-underline-offset:6px}
.links a.btn{color:var(--on-amber)}
.nav-toggle{
  display:none;background:transparent;border:1px solid var(--seam-strong);
  color:var(--ink);border-radius:var(--radius);padding:8px 12px;
  font-family:'IBM Plex Mono',monospace;font-size:13px;cursor:pointer;
}

/* --- hero --- */
.hero{
  padding:84px 0 72px;
  background:
    radial-gradient(900px 420px at 78% -8%, rgba(139,92,246,.22), transparent 62%),
    radial-gradient(600px 300px at 8% 6%, rgba(112,72,232,.13), transparent 60%);
  border-bottom:1px solid var(--seam);
}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.lede{font-size:18.5px;color:var(--frost);max-width:56ch;margin-bottom:28px}
.hero-ctas{display:flex;flex-wrap:wrap;gap:12px}

/* --- status card --- */
.status-card{
  background:var(--surface);border:1px solid var(--seam);border-radius:8px;
  padding:20px 22px;box-shadow:0 18px 44px rgba(0,0,0,.42);
}
.status-head{
  display:flex;justify-content:space-between;align-items:center;
  font-family:'IBM Plex Mono',monospace;font-size:11px;letter-spacing:.1em;
  color:var(--mist);text-transform:uppercase;
  padding-bottom:14px;margin-bottom:6px;border-bottom:1px solid var(--seam);
}
.dot{
  display:inline-block;width:7px;height:7px;border-radius:50%;
  background:var(--amber);margin-right:8px;vertical-align:middle;
}
.status-row{
  display:flex;justify-content:space-between;gap:16px;
  padding:11px 0;border-bottom:1px solid rgba(54,43,72,.6);
  font-family:'IBM Plex Mono',monospace;font-size:13px;
}
.status-row:last-child{border-bottom:none}
.status-row .k{color:var(--mist)}
.status-row .v{color:var(--ink);text-align:right}
.status-row .v.accent{color:var(--lavender)}

/* --- sections --- */
section{padding:76px 0}
.band{background:var(--surface);border-block:1px solid var(--seam)}
.band-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:start}
.band ul{list-style:none;margin:0;padding:0}
.band li{
  padding:16px 0 16px 20px;border-left:2px solid var(--violet);
  margin-bottom:14px;background:linear-gradient(90deg,rgba(139,92,246,.07),transparent 60%);
}
.band li strong{color:var(--ink);display:block;margin-bottom:3px}

/* --- service cards --- */
.svc-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:44px;
}
.svc{
  background:var(--surface);border:1px solid var(--seam);border-radius:8px;
  padding:26px 24px;transition:border-color .18s ease,transform .18s ease;
}
.svc:hover{border-color:var(--violet);transform:translateY(-2px)}
.svc .mono-label{
  font-family:'IBM Plex Mono',monospace;font-size:11.5px;color:var(--lavender);
  letter-spacing:.1em;text-transform:uppercase;display:block;margin-bottom:12px;
}
.svc p{margin:0;font-size:15.5px}
.svc:last-child{margin-bottom:0}

/* --- prose (About / Privacy) --- */
.prose{max-width:70ch}
.prose h2{margin-top:44px}
.prose h3{margin-top:30px;color:var(--lavender)}
.prose ul{padding-left:20px}
.prose li{margin-bottom:10px}
.todo{
  display:inline-block;background:rgba(242,169,59,.14);
  border:1px dashed var(--amber);color:var(--amber);
  padding:1px 8px;border-radius:4px;font-family:'IBM Plex Mono',monospace;font-size:13px;
}

/* --- contact / form --- */
.contact-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.mono-note{
  font-family:'IBM Plex Mono',monospace;font-size:13px;
  color:var(--mist);margin-top:26px;
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:8px}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1 / -1}
.field label{font-size:14px;font-weight:600;color:var(--ink)}
.field .opt{color:var(--mist);font-weight:400}
.field input,.field textarea{
  background:var(--raised);color:var(--ink);
  border:1px solid var(--seam-strong);border-radius:var(--radius);
  padding:12px 14px;font-family:inherit;font-size:15.5px;width:100%;
  transition:border-color .15s ease;
}
.field textarea{min-height:150px;resize:vertical}
.field input:hover,.field textarea:hover{border-color:var(--lavender)}
.field input::placeholder,.field textarea::placeholder{color:var(--mist)}
.field input[aria-invalid="true"],.field textarea[aria-invalid="true"]{border-color:var(--amber)}
.err{color:var(--amber);font-size:13.5px;min-height:1.2em}
/* honeypot — hidden from humans, reachable by naive bots */
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form-foot{display:flex;flex-wrap:wrap;gap:16px;align-items:center;margin-top:22px}
.form-status{margin-top:20px;padding:14px 16px;border-radius:var(--radius);font-size:15.5px}
.form-status[hidden]{display:none}
.form-status.ok{background:rgba(112,72,232,.16);border:1px solid var(--violet);color:var(--ink)}
.form-status.bad{background:rgba(242,169,59,.12);border:1px solid var(--amber);color:var(--ink)}
.contact-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:52px;align-items:start}
.aside-card{
  background:var(--surface);border:1px solid var(--seam);
  border-radius:8px;padding:24px;
}
.aside-card h3{margin-top:0}
.aside-card p:last-child{margin-bottom:0}

/* --- footer --- */
footer{border-top:1px solid var(--seam);padding:34px 0;background:var(--surface)}
.foot{
  display:flex;justify-content:space-between;align-items:center;
  gap:16px;flex-wrap:wrap;font-size:14px;color:var(--mist);
}
.foot-links{display:flex;gap:20px;flex-wrap:wrap}
.foot a{color:var(--mist);text-decoration:none}
.foot a:hover{color:var(--lavender);text-decoration:underline}

/* --- 404 --- */
.oops{text-align:center;padding:110px 0}
.oops .code{
  font-family:'IBM Plex Mono',monospace;font-size:64px;color:var(--violet);
  letter-spacing:.06em;margin-bottom:10px;line-height:1;
}
.oops .hero-ctas{justify-content:center}

/* --- motion --- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
  .btn:hover,.svc:hover{transform:none}
  html{scroll-behavior:auto}
}

/* --- responsive --- */
@media (max-width:980px){
  .hero-grid,.band-grid,.contact-grid{grid-template-columns:1fr;gap:40px}
  .svc-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:720px){
  .nav-toggle{display:block}
  .links{
    display:none;position:absolute;top:68px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--surface);border-bottom:1px solid var(--seam);
    padding:8px 24px 20px;
  }
  .links.open{display:flex}
  .links a{padding:13px 0;border-bottom:1px solid var(--seam)}
  .links a.btn{margin-top:14px;border-bottom:none;justify-content:center}
  .links a[aria-current="page"]{text-decoration:none}
}
@media (max-width:600px){
  body{font-size:16px}
  section,.hero{padding:56px 0}
  .svc-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .foot{flex-direction:column;align-items:flex-start}
  .oops{padding:72px 0}
  .oops .code{font-size:48px}
}
@media (max-width:380px){
  .wrap{padding:0 16px}
  .btn{width:100%}
  .hero-ctas,.contact-actions{flex-direction:column}
}

/* 404 intro — centered without an inline style attribute, so style-src stays 'self' */
.oops .section-intro{margin:0 auto 26px;max-width:52ch}

/* Contact form heading — keeps the h1 -> h2 -> h3 order intact for the
   aside's headings, which Lighthouse flagged as a skipped level. */
.form-h{font-size:22px;margin-bottom:18px}

/* ============================================================
   Service cards -> detail dialogs
   Click, not hover: hover content is unreachable on touch and fails
   WCAG 1.4.13 unless it is dismissible, hoverable and persistent.
   ============================================================ */
.svc{position:relative;display:flex;flex-direction:column;cursor:pointer}
.svc p{flex:1}
.svc-more{
  align-self:flex-start;margin-top:16px;
  background:transparent;border:0;padding:0;
  color:var(--lavender);font-family:inherit;font-size:14.5px;font-weight:600;
  cursor:pointer;display:inline-flex;align-items:center;gap:7px;
}
.svc-more-arrow{transition:transform .15s ease}
.svc:hover .svc-more{color:var(--ink)}
.svc:hover .svc-more-arrow{transform:translateX(3px)}

.svc-dialog{
  border:1px solid var(--seam-strong);border-radius:10px;
  background:var(--surface);color:var(--frost);
  max-width:640px;width:calc(100% - 32px);padding:0;
  box-shadow:0 30px 80px rgba(0,0,0,.6);
}
.svc-dialog::backdrop{background:rgba(8,5,12,.76)}
.svc-dialog-head{
  display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  padding:26px 28px 18px;border-bottom:1px solid var(--seam);
}
.svc-dialog-head h2{font-size:24px;margin:0}
.svc-dialog-head .mono-label{
  font-family:'IBM Plex Mono',ui-monospace,monospace;font-size:11.5px;
  color:var(--lavender);letter-spacing:.1em;display:block;margin-bottom:9px;
}
.svc-close{
  background:transparent;border:1px solid var(--seam-strong);border-radius:var(--radius);
  color:var(--frost);font-size:20px;line-height:1;
  width:34px;height:34px;flex:none;cursor:pointer;
}
.svc-close:hover{background:var(--raised);color:var(--ink);border-color:var(--lavender)}
.svc-dialog-body{padding:22px 28px 6px;max-height:min(56vh,460px);overflow-y:auto}
.svc-dialog-body h3{
  font-family:'IBM Plex Mono',ui-monospace,monospace;
  font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--lavender);margin:22px 0 8px;
}
.svc-dialog-body h3:first-child{margin-top:0}
.svc-dialog-body p{font-size:15.5px;margin-bottom:18px}
.svc-dialog-foot{padding:18px 28px 26px;border-top:1px solid var(--seam);margin-top:6px}

@media (prefers-reduced-motion:no-preference){
  .svc-dialog[open]{animation:dlg .18s ease-out}
  @keyframes dlg{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
}
@media (max-width:600px){
  .svc-dialog-head{padding:20px 20px 14px}
  .svc-dialog-body{padding:18px 20px 4px;max-height:60vh}
  .svc-dialog-foot{padding:16px 20px 22px}
  .svc-dialog-head h2{font-size:21px}
}