/* ==========================================================================
   Hi Def Tek - Website Design System v2.0  |  Site stylesheet (hdt.css)
   Derived from the Design Authority System. Tokens first, then base,
   components, sections, and responsive rules.
   ========================================================================== */
:root{
  --brand-green:#1E5B43; --brand-green-dk:#123B2C;
  --brand-blue:#2B6F97;  --brand-blue-dk:#1E4E6B;
  --circuit-blue:#597395;
  --accent-gold:#C2A744; --accent-gold-lt:#E2D17D;
  --ink:#1B2A25;
  --success:#3DA35D; --warning:#C77D11; --danger:#B23A3A;
  --bg:#FFFFFF; --surface:#F3F3F3; --surface-raised:#FFFFFF;
  --border:#E6E9EC; --border-strong:#C4CAD0;
  --text:#3d4a45; --heading:#1E5B43; --muted:#6c7a73;
  --link:#2B6F97; --on-brand:#FFFFFF;
  --font-sans:'IBM Plex Sans','Segoe UI',system-ui,-apple-system,sans-serif;
  --font-mono:'IBM Plex Mono',Consolas,ui-monospace,monospace;
  --fw-regular:400; --fw-medium:500; --fw-semibold:600; --fw-bold:700;
  --fs-display:clamp(2.2rem,5vw,3.25rem); --fs-h1:clamp(1.9rem,3.6vw,2.5rem);
  --fs-h2:clamp(1.5rem,2.6vw,1.9rem); --fs-h3:1.375rem; --fs-h4:1.125rem;
  --fs-body:1.05rem; --fs-small:0.9rem; --fs-caption:0.8125rem;
  --space-1:.25rem; --space-2:.5rem; --space-3:.75rem; --space-4:1rem;
  --space-5:2rem; --space-6:3rem; --space-7:4rem; --space-8:6rem;
  --container-max:1180px; --container-text:720px;
  --radius-sm:4px; --radius-md:8px; --radius-lg:16px;
  --shadow-sm:0 1px 2px rgba(27,42,37,.06);
  --shadow-md:0 6px 24px rgba(27,42,37,.10);
  --dur:200ms; --ease:cubic-bezier(.2,.6,.2,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{margin:0;font-family:var(--font-sans);font-size:var(--fs-body);line-height:1.65;
  color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,h5{font-family:var(--font-sans);color:var(--heading);line-height:1.2;
  font-weight:var(--fw-semibold);margin:0 0 var(--space-3)}
p{margin:0 0 var(--space-4)}
a{color:var(--link);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
code{font-family:var(--font-mono)}
.wrap{max-width:var(--container-max);margin:0 auto;padding:0 var(--space-5)}
.eyebrow{font:var(--fw-semibold) var(--fs-caption)/1 var(--font-mono);letter-spacing:.14em;
  text-transform:uppercase;color:var(--accent-gold);margin-bottom:var(--space-3);display:block}
.section{padding:var(--space-8) 0}
.section--tint{background:var(--surface)}
.section__head{max-width:var(--container-text);margin-bottom:var(--space-6)}
.lead{font-size:var(--fs-h4);color:var(--text);line-height:1.55}
.center{text-align:center;margin-left:auto;margin-right:auto}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:.5rem;font:var(--fw-semibold) var(--fs-small)/1 var(--font-sans);
  padding:.85rem 1.4rem;border-radius:var(--radius-md);border:1.5px solid transparent;cursor:pointer;
  transition:background var(--dur) var(--ease),transform var(--dur) var(--ease),color var(--dur);text-decoration:none}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn--primary{background:var(--brand-blue);color:#fff}
.btn--primary:hover{background:var(--brand-blue-dk);color:#fff}
.btn--ghost{background:transparent;color:var(--link);border-color:transparent;padding-left:.2rem}
.btn--lg{font-size:var(--fs-body);padding:1rem 1.7rem}
.btn--onink{background:var(--accent-gold);color:var(--ink)}
.btn--onink:hover{background:var(--accent-gold-lt);color:var(--ink)}
.btn:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,button:focus-visible{
  outline:3px solid var(--accent-gold);outline-offset:2px}

/* Nav */
.nav{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border)}
.nav__inner{display:flex;align-items:center;gap:var(--space-5);max-width:var(--container-max);
  margin:0 auto;padding:.7rem var(--space-5)}
.nav__brand img{height:38px}
.nav__links{display:flex;gap:var(--space-5);margin-left:auto;align-items:center}
.nav__links a{color:var(--text);font-weight:var(--fw-medium);font-size:var(--fs-small)}
.nav__links a:hover{color:var(--brand-green);text-decoration:none}
.nav__cta{margin-left:var(--space-3)}
.nav__toggle{display:none;margin-left:auto;background:none;border:1.5px solid var(--border-strong);
  border-radius:var(--radius-sm);padding:.4rem .6rem;cursor:pointer;color:var(--brand-green);font-size:1.2rem;line-height:1}

/* Hero */
.hero{padding:var(--space-8) 0 var(--space-7);position:relative;overflow:hidden}
.hero__grid{position:absolute;inset:0;opacity:.5;pointer-events:none;
  background-image:linear-gradient(var(--border) 1px,transparent 1px),linear-gradient(90deg,var(--border) 1px,transparent 1px);
  background-size:44px 44px;-webkit-mask-image:radial-gradient(ellipse 70% 60% at 70% 20%,#000,transparent 75%);
  mask-image:radial-gradient(ellipse 70% 60% at 70% 20%,#000,transparent 75%)}
.hero__inner{position:relative;max-width:820px}
.hero h1{font-size:var(--fs-display);margin-bottom:var(--space-4)}
.hero__sub{font-size:var(--fs-h4);color:var(--text);max-width:640px;margin-bottom:var(--space-5)}
.hero__actions{display:flex;flex-wrap:wrap;gap:var(--space-3);align-items:center}

/* Two-column reframe */
.split{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-5)}
.panel{background:var(--surface-raised);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:var(--space-5);box-shadow:var(--shadow-sm)}
.panel--cause{border-top:3px solid var(--brand-green)}
.panel--symptom{border-top:3px solid var(--accent-gold)}
.panel h3{font-size:var(--fs-h4)}
.panel ul{list-style:none;padding:0;margin:0}
.panel li{padding:.5rem 0 .5rem 1.6rem;position:relative;border-bottom:1px dashed var(--border);color:var(--text);font-size:var(--fs-small)}
.panel li:last-child{border-bottom:0}
.panel li::before{content:"";position:absolute;left:0;top:1.05rem;width:8px;height:8px;border-radius:2px;background:var(--circuit-blue)}
.panel--cause li::before{background:var(--brand-green)}

/* Grids */
.grid{display:grid;gap:var(--space-4)}
.grid--4{grid-template-columns:repeat(4,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--2{grid-template-columns:repeat(2,1fr)}

/* Authority cards */
.acard{padding:var(--space-4);border-left:3px solid var(--accent-gold);background:var(--surface-raised);
  border-radius:0 var(--radius-md) var(--radius-md) 0;box-shadow:var(--shadow-sm)}
.acard__icon{width:30px;height:30px;color:var(--brand-blue);margin-bottom:var(--space-2)}
.acard h4{font-size:var(--fs-h4);margin-bottom:.3rem}
.acard p{margin:0;font-size:var(--fs-small);color:var(--muted)}

/* Service / outcome cards */
.card{background:var(--surface-raised);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:var(--space-5);box-shadow:var(--shadow-sm);height:100%}
.card__tag{font:var(--fw-semibold) var(--fs-caption) var(--font-mono);letter-spacing:.06em;
  text-transform:uppercase;color:var(--accent-gold)}
.card h3{margin:.4rem 0 .3rem}
.card__lead{font-weight:var(--fw-medium);color:var(--text)}
.card p{font-size:var(--fs-small);color:var(--muted)}

/* Ladder */
.ladder{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-4);padding:0;margin:0}
.ladder__step{background:var(--surface-raised);border:1px solid var(--border);border-top:3px solid var(--brand-green);
  border-radius:var(--radius-md);padding:var(--space-5);position:relative}
.ladder__n{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:50%;
  background:var(--brand-green);color:#fff;font-weight:var(--fw-bold);margin-bottom:var(--space-3)}
.ladder__step h4{font-size:var(--fs-h4);margin-bottom:.3rem}
.ladder__step p{margin:0;font-size:var(--fs-small);color:var(--muted)}
.ladder__step .tagi{font:var(--fw-semibold) var(--fs-caption) var(--font-mono);color:var(--circuit-blue);text-transform:uppercase;letter-spacing:.05em}

/* Case signals */
.signal{background:var(--surface-raised);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:var(--space-5);box-shadow:var(--shadow-sm);height:100%}
.signal__row{margin-bottom:var(--space-3)}
.signal__k{font:var(--fw-semibold) var(--fs-caption) var(--font-mono);text-transform:uppercase;
  letter-spacing:.06em;color:var(--muted);display:block;margin-bottom:.15rem}
.signal__row p{margin:0;font-size:var(--fs-small);color:var(--text)}
.signal__result{border-top:2px solid var(--accent-gold);padding-top:var(--space-3);margin-top:var(--space-3);
  font-weight:var(--fw-semibold);color:var(--brand-green);font-size:var(--fs-small)}

/* About */
.about{display:grid;grid-template-columns:1.4fr 1fr;gap:var(--space-6);align-items:center}
.pull{border-left:4px solid var(--accent-gold);padding:var(--space-4) var(--space-5);background:var(--surface);
  border-radius:0 var(--radius-md) var(--radius-md) 0;font-size:var(--fs-h4);color:var(--ink);font-style:italic}

/* CTA band */
.cta{background:var(--ink);border-radius:var(--radius-lg);padding:var(--space-7) var(--space-5);text-align:center}
.cta h2{color:#fff;max-width:24ch;margin:0 auto var(--space-3)}
.cta p{color:#B9Cabc;margin:0 auto var(--space-5);max-width:52ch}

/* Contact */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-6);align-items:start}
.form{display:grid;gap:var(--space-4);max-width:560px}
.form label{display:grid;gap:.4rem;font-weight:var(--fw-medium);color:var(--text);font-size:var(--fs-small)}
.form input,.form textarea{font:var(--fs-body) var(--font-sans);padding:.75rem .85rem;
  border:1.5px solid var(--border-strong);border-radius:var(--radius-md);background:#fff;color:var(--text);width:100%}
.form input:focus,.form textarea:focus{border-color:var(--brand-blue)}
.contact__aside h3{font-size:var(--fs-h4)}
.contact__aside a{font-weight:var(--fw-semibold)}

/* Footer */
.footer{background:var(--ink);color:#C7D6CD;padding:var(--space-7) 0 var(--space-5)}
.footer__grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:var(--space-5)}
.footer__brand img{height:44px;margin-bottom:var(--space-3)}
.footer h5{color:#fff;font-size:var(--fs-caption);text-transform:uppercase;letter-spacing:.08em;margin-bottom:var(--space-3)}
.footer nav{display:grid;gap:.5rem}
.footer a{color:#9FBFB0}
.footer a:hover{color:#fff}
.footer__legal{border-top:1px solid #2C4034;margin-top:var(--space-5);padding-top:var(--space-4);
  font-size:var(--fs-caption);color:#7f958b;display:flex;justify-content:space-between;flex-wrap:wrap;gap:.5rem}

/* Responsive */
@media (max-width:960px){
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .ladder{grid-template-columns:1fr}
  .about{grid-template-columns:1fr}
  .contact{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  .split{grid-template-columns:1fr}
  .grid--3,.grid--2,.grid--4{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr}
  .nav__links{position:fixed;inset:64px 0 auto 0;flex-direction:column;align-items:flex-start;
    background:#fff;border-bottom:1px solid var(--border);padding:var(--space-4) var(--space-5);gap:var(--space-4);
    display:none;box-shadow:var(--shadow-md)}
  .nav__links.open{display:flex}
  .nav__cta{margin-left:0}
  .nav__toggle{display:inline-block}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

/* ==========================================================================
   ADDED IN v1.0.0 - self-hosted fonts, form controls, submit states
   ========================================================================== */

/* --- Self-hosted IBM Plex (replaces the Google Fonts <link>) -------------- */
/* font-display:swap = show fallback text immediately, swap when the font
   arrives. The page is never blank waiting on a font file. */
@font-face{font-family:'IBM Plex Sans';src:url('../fonts/ibm-plex-sans-400.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'IBM Plex Sans';src:url('../fonts/ibm-plex-sans-500.woff2') format('woff2');font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:'IBM Plex Sans';src:url('../fonts/ibm-plex-sans-600.woff2') format('woff2');font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:'IBM Plex Sans';src:url('../fonts/ibm-plex-sans-700.woff2') format('woff2');font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:'IBM Plex Mono';src:url('../fonts/ibm-plex-mono-400.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'IBM Plex Mono';src:url('../fonts/ibm-plex-mono-600.woff2') format('woff2');font-weight:600;font-style:normal;font-display:swap}

/* --- Skip link: visible only when focused -------------------------------- */
.skip{position:absolute;left:-9999px;top:0;z-index:100;background:var(--ink);color:#fff;
  padding:.75rem 1.1rem;border-radius:0 0 var(--radius-md) 0;font-weight:var(--fw-semibold)}
.skip:focus{left:0}

/* --- Form: extra controls ------------------------------------------------ */
.form__row{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-4)}
.form select{font:var(--fs-body) var(--font-sans);padding:.75rem .85rem;
  border:1.5px solid var(--border-strong);border-radius:var(--radius-md);
  background:#fff;color:var(--text);width:100%;appearance:none;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%236c7a73' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right .85rem center}
.form select:focus{border-color:var(--brand-blue)}
.form .req{color:var(--danger);font-weight:var(--fw-semibold)}
.form__hint{font-size:var(--fs-caption);color:var(--muted);margin:0}

/* Honeypot. Never shown, never focusable, never announced.
   A human cannot fill this in; automated form-fillers routinely do. */
.hp{position:absolute!important;left:-9999px!important;top:auto!important;
  width:1px!important;height:1px!important;overflow:hidden!important}

/* --- Submit states ------------------------------------------------------- */
.btn[disabled]{opacity:.55;cursor:progress;transform:none}
.form__status{margin:0;padding:var(--space-4);border-radius:var(--radius-md);
  font-size:var(--fs-small);display:none}
.form__status[data-state]{display:block}
.form__status[data-state="ok"]{background:#EAF5EE;border-left:4px solid var(--success);color:#1F5B32}
.form__status[data-state="error"]{background:#FBEDED;border-left:4px solid var(--danger);color:#7E2626}
.form__status[data-state="working"]{background:var(--surface);border-left:4px solid var(--circuit-blue);color:var(--text)}

/* Cloudflare Turnstile widget sits in normal flow */
.cf-turnstile{min-height:65px}

/* --- 404 ----------------------------------------------------------------- */
.notfound{display:grid;place-items:center;min-height:60vh;text-align:center}
.notfound .wrap{max-width:var(--container-text)}
.notfound__code{font:var(--fw-semibold) var(--fs-caption)/1 var(--font-mono);
  letter-spacing:.14em;text-transform:uppercase;color:var(--accent-gold);display:block;
  margin-bottom:var(--space-3)}

@media (max-width:720px){
  .form__row{grid-template-columns:1fr}
}