/* H1 Tech site styles.
   Colours: the current h1-t3k palette, kept until the competitive colour audit.
   To change the palette later, edit only the "Palette" block below; components use the role tokens. */

@font-face{font-family:'DIN2014';src:url('../fonts/DIN2014-Regular.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'DIN2014';src:url('../fonts/DIN2014-Bold.woff2') format('woff2');font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:'Monogram';src:url('../fonts/monogram.woff2') format('woff2');font-display:block}

:root{
  /* Palette */
  --c-bg:#0d0f0b;
  --c-surface:#111409;
  --c-surface-2:#161a0e;
  --c-border:#2a3020;
  --c-border-strong:#3a4530;
  --c-text:#d4e8c2;
  --c-text-muted:#8aa477;
  --c-accent:#39d353;
  --c-on-accent:#0d0f0b;
  --c-error:#e05c3a;

  --font-sans:'DIN2014',system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;
  --text-sm:0.9375rem;
  --text-base:clamp(1.0625rem,1rem + 0.25vw,1.1875rem);
  --text-lg:clamp(1.1875rem,1.1rem + 0.4vw,1.375rem);
  --text-h3:clamp(1.25rem,1.15rem + 0.5vw,1.5rem);
  --text-h2:clamp(1.625rem,1.35rem + 1.3vw,2.25rem);
  --text-h1:clamp(2.25rem,1.6rem + 3vw,3.5rem);
  --space:clamp(48px,8vw,88px);
}

*{box-sizing:border-box}
html{font-size:100%}
body{margin:0;background:var(--c-bg);color:var(--c-text);font-family:var(--font-sans);font-size:var(--text-base);
  line-height:1.6;font-synthesis:none;-webkit-text-size-adjust:100%;text-size-adjust:100%;-webkit-font-smoothing:antialiased}
p,li{overflow-wrap:break-word}
a{color:var(--c-accent);text-underline-offset:3px}
a:focus-visible,.btn:focus-visible,input:focus-visible,textarea:focus-visible,button:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px}

.wrap{max-width:1080px;margin:0 auto;padding-left:max(20px,env(safe-area-inset-left));padding-right:max(20px,env(safe-area-inset-right))}
.skip{position:absolute;left:12px;top:-60px;background:var(--c-accent);color:var(--c-on-accent);padding:10px 14px;font-weight:700;z-index:10}
.skip:focus{top:12px}

h1,h2,h3{font-weight:700;line-height:1.15;margin:0;letter-spacing:-0.005em}
h1{font-size:var(--text-h1);line-height:1.05;color:var(--c-accent);max-width:18ch}
h2{font-size:var(--text-h2);color:var(--c-text)}
h3{font-size:var(--text-h3);color:var(--c-text)}

/* ── Header ── */
.site-header{border-bottom:1px solid var(--c-border)}
.nav{display:flex;flex-wrap:wrap;align-items:center;gap:10px 24px;padding-top:14px;padding-bottom:14px}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-text);text-decoration:none;margin-right:auto}
.brand-mono{font-family:'Monogram',var(--font-sans);font-size:1.875rem;line-height:1;color:var(--c-accent)}
.brand-name{font-weight:700;font-size:var(--text-lg);letter-spacing:0.02em}
.nav-links{display:flex;flex-wrap:wrap;align-items:center;gap:4px 22px}
.nav-links a:not(.btn){color:var(--c-text);text-decoration:none;font-size:var(--text-sm);padding:10px 0}
.nav-links a:not(.btn):hover,.nav-links a:not(.btn)[aria-current="page"]{color:var(--c-accent)}
.nav-links a:not(.btn)[aria-current="page"]{text-decoration:underline;text-underline-offset:6px}

/* ── Buttons ── */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 20px;border:1px solid var(--c-accent);
  font:700 1rem/1.2 var(--font-sans);letter-spacing:0.02em;text-decoration:none;cursor:pointer;transition:background .15s,color .15s}
.btn-primary{background:var(--c-accent);color:var(--c-on-accent)}
.btn-primary:hover{background:var(--c-text);border-color:var(--c-text)}
.btn-secondary{background:transparent;color:var(--c-accent)}
.btn-secondary:hover{background:var(--c-surface-2)}
.nav-links .btn{min-height:42px;padding:8px 16px;font-size:var(--text-sm)}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}

/* ── Page sections ── */
.hero{padding:var(--space) 0 calc(var(--space) * 0.75);border-bottom:1px solid var(--c-border)}
.lede{max-width:60ch;margin:20px 0 0;font-size:var(--text-lg);color:var(--c-text)}
.meta{margin:14px 0 0;color:var(--c-text-muted);font-size:var(--text-sm)}
.section{padding-top:var(--space)}
.section > h2{margin-bottom:24px}
.prose{max-width:66ch}
.prose p{margin:0 0 16px;color:var(--c-text-muted)}
.prose p strong,.list strong{color:var(--c-text)}

.list{list-style:none;margin:0;padding:0;max-width:72ch}
.list li{position:relative;padding:10px 0 10px 22px;border-bottom:1px solid var(--c-border);color:var(--c-text-muted)}
.list li:last-child{border-bottom:0}
.list li::before{content:'';position:absolute;left:0;top:1.15em;width:8px;height:8px;background:var(--c-accent)}

.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.card{background:var(--c-surface);border:1px solid var(--c-border);padding:clamp(22px,3vw,32px);display:flex;flex-direction:column;gap:12px}
.card p{margin:0;color:var(--c-text-muted)}
.card .more{margin-top:auto;padding-top:8px;font-weight:700}
.card-primary{border-color:var(--c-border-strong);background:var(--c-surface-2)}
.label{font-size:var(--text-sm);font-weight:700;color:var(--c-accent);letter-spacing:0.04em}
.note{margin:20px 0 0;color:var(--c-text-muted);max-width:72ch}

.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;counter-reset:step}
.steps li{counter-increment:step;background:var(--c-surface);border:1px solid var(--c-border);padding:22px 20px;color:var(--c-text-muted)}
.steps li::before{content:counter(step);display:block;font-weight:700;color:var(--c-accent);font-size:var(--text-sm);margin-bottom:6px}
.steps b{display:block;color:var(--c-text);font-size:var(--text-h3);margin-bottom:6px}

.pairs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 32px;max-width:960px}
.pairs h3{font-size:var(--text-lg)}
.pairs p{margin:6px 0 0;color:var(--c-text-muted)}

.closing{margin-top:var(--space);padding:clamp(28px,5vw,48px);background:var(--c-surface);border:1px solid var(--c-border-strong)}
.closing p{margin:12px 0 0;color:var(--c-text-muted);font-size:var(--text-lg)}

/* ── Contact form ── */
.form{display:grid;gap:20px;max-width:620px}
.field label{display:block;font-weight:700;margin-bottom:6px}
.field .hint{font-weight:400;color:var(--c-text-muted)}
.field input,.field textarea{width:100%;font:inherit;color:var(--c-text);background:var(--c-surface);border:1px solid var(--c-border-strong);padding:12px 14px;min-height:48px}
.field textarea{min-height:160px;resize:vertical}
.field input[aria-invalid="true"],.field textarea[aria-invalid="true"]{border-color:var(--c-error)}
.field-error{margin:6px 0 0;color:var(--c-error);font-size:var(--text-sm)}
.form-status{padding:18px 20px;border:1px solid var(--c-border-strong);background:var(--c-surface)}
.form-status.is-error{border-color:var(--c-error)}
.form-status.is-success{border-color:var(--c-accent)}
.form-status p{margin:0 0 10px}
.form-status textarea{width:100%;min-height:140px;font:inherit;font-size:var(--text-sm);color:var(--c-text);background:var(--c-bg);border:1px solid var(--c-border);padding:10px}

.mail{font-size:var(--text-lg);font-weight:700;overflow-wrap:anywhere}

footer{margin-top:var(--space);padding:20px 0 28px;position:relative;color:var(--c-text-muted);
  font-size:var(--text-sm);display:flex;flex-wrap:wrap;gap:8px 28px;justify-content:space-between}
footer a{color:var(--c-text-muted)}
footer::before{content:'';position:absolute;top:0;left:max(20px,env(safe-area-inset-left));right:max(20px,env(safe-area-inset-right));border-top:1px solid var(--c-border)}

@media (max-width:860px){
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cards,.pairs{grid-template-columns:1fr}
}
@media (max-width:520px){
  .steps{grid-template-columns:1fr}
  .brand{width:100%;margin-right:0}
  .actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}