/* ==========================================================================
   martechdev.de  |  Rostyslav Krasnikov
   Type: Lato (self-hosted, no third-party font CDN)
   Palette derived from cxl.com: #1a1a1a ink, #d61f2c accent, #faf7ef beige
   ========================================================================== */

@font-face{font-family:Lato;src:url(fonts/lato-400.woff2) format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:Lato;src:url(fonts/lato-700.woff2) format('woff2');font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:Lato;src:url(fonts/lato-900.woff2) format('woff2');font-weight:900;font-style:normal;font-display:swap}

:root{
  --ink:#1a1a1a;
  --ink-soft:rgba(26,26,26,.94);
  --ink-mute:rgba(26,26,26,.62);
  --paper:#ffffff;
  --beige:#faf7ef;
  --line:rgba(26,26,26,.16);
  --line-strong:#1a1a1a;
  --accent:#d61f2c;
  --accent-ink:#ffffff;
  --bar:#1a1a1a;
  --bar-ink:#ffffff;
  --focus:#d61f2c;
  --maxw:1080px;
  --gut:24px;
}

html[data-theme=dark]{
  --ink:#f2f0ec;
  --ink-soft:rgba(242,240,236,.92);
  --ink-mute:rgba(242,240,236,.60);
  --paper:#121212;
  --beige:#191817;
  --line:rgba(242,240,236,.18);
  --line-strong:rgba(242,240,236,.38);
  --accent:#ff5a63;
  --accent-ink:#141414;
  --bar:#000000;
  --bar-ink:#f2f0ec;
  --focus:#ff5a63;
}

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

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

body{
  margin:0;
  font-family:Lato,-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif;
  font-size:18px;
  line-height:1.625;
  color:var(--ink-soft);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;height:auto}

a{color:var(--accent);text-decoration:none;border-bottom:1px solid transparent}
a:hover{border-bottom-color:currentColor}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px}

h1,h2,h3,h4{color:var(--ink);font-weight:900;letter-spacing:-.02em;margin:0 0 .5em}
h1{font-size:clamp(2.15rem,5.2vw,3.4rem);line-height:1.08}
h2{font-size:clamp(1.65rem,3.4vw,2.45rem);line-height:1.14}
h3{font-size:1.22rem;line-height:1.3;letter-spacing:-.01em}
h4{font-size:1rem;line-height:1.35}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
strong{font-weight:700;color:var(--ink)}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--gut)}
.narrow{max-width:760px}

.skip{position:absolute;left:-9999px}
.skip:focus{left:8px;top:8px;z-index:99;background:var(--accent);color:var(--accent-ink);padding:10px 16px}

/* ---------- top bar ---------- */
.bar{background:var(--bar);color:var(--bar-ink);position:sticky;top:0;z-index:40;border-bottom:1px solid rgba(255,255,255,.1)}
.bar .wrap{display:flex;align-items:center;gap:18px;min-height:58px}
.brand{font-weight:900;color:var(--bar-ink);font-size:1.02rem;letter-spacing:-.01em;border:0;white-space:nowrap}
.brand span{color:var(--accent)}
.bar nav{margin-left:auto;display:flex;align-items:center;gap:22px}
.bar nav a{color:var(--bar-ink);font-size:.94rem;opacity:.86}
.bar nav a:hover{opacity:1;border-bottom-color:var(--accent)}
.bar-tools{display:flex;align-items:center;gap:10px;margin-left:auto}
.bar nav+.bar-tools{margin-left:0}

.lang{display:flex;border:1px solid rgba(255,255,255,.3);font-size:.76rem;font-weight:700;letter-spacing:.06em}
.lang a,.lang span{padding:4px 8px;color:var(--bar-ink);border:0;opacity:.6}
.lang .on{background:var(--bar-ink);color:var(--bar);opacity:1}
.lang a:hover{opacity:1}

.theme-btn{background:none;border:1px solid rgba(255,255,255,.3);color:var(--bar-ink);width:30px;height:26px;cursor:pointer;display:grid;place-items:center;padding:0;font:inherit}
.theme-btn:hover{border-color:var(--accent)}
.theme-btn svg{width:15px;height:15px;display:block;fill:currentColor}
html:not([data-theme=dark]) .theme-btn .i-sun{display:none}
html[data-theme=dark] .theme-btn .i-moon{display:none}

@media(max-width:860px){
  .bar nav{display:none}
  .bar .wrap{min-height:52px}
}

/* ---------- sections ---------- */
section{padding:clamp(48px,7vw,88px) 0;border-top:1px solid var(--line)}
section:first-of-type{border-top:0}
.alt{background:var(--beige)}
.eyebrow{font-size:.76rem;font-weight:900;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin:0 0 14px}

/* ---------- hero ---------- */
.hero{padding-top:clamp(44px,6vw,76px);padding-bottom:clamp(36px,4vw,52px)}
.hero h1{max-width:22ch}
.hero .sub{font-size:clamp(1.02rem,1.5vw,1.2rem);max-width:62ch;color:var(--ink-soft)}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}

.btn{display:inline-block;font-weight:900;font-size:1rem;padding:14px 26px;border:2px solid var(--accent);background:var(--accent);color:var(--accent-ink);letter-spacing:-.01em}
.btn:hover{background:transparent;color:var(--accent);border-bottom-color:var(--accent)}
.btn-2{background:transparent;color:var(--ink);border-color:var(--line-strong)}
.btn-2:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:2px solid var(--line-strong);border-left:1px solid var(--line)}
.stats div{padding:20px 18px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats b{display:block;font-size:clamp(1.5rem,3vw,2.1rem);font-weight:900;color:var(--ink);line-height:1.05;letter-spacing:-.03em}
.stats span{display:block;font-size:.82rem;line-height:1.35;color:var(--ink-mute);margin-top:7px}
@media(max-width:720px){.stats{grid-template-columns:repeat(2,1fr)}}

/* ---------- columns ---------- */
.cols3{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-top:34px}
.cols2{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:start}
@media(max-width:860px){.cols3{grid-template-columns:1fr;gap:26px}.cols2{grid-template-columns:1fr;gap:34px}}

.card{border:1px solid var(--line);border-top:3px solid var(--ink);padding:24px 22px;background:var(--paper)}
.card h3{margin-bottom:.4em}
.card p{font-size:.98rem;color:var(--ink-soft)}
.card ul{margin:.7em 0 0;padding:0;list-style:none;font-size:.93rem}
.card li{padding-left:14px;position:relative;margin-bottom:5px;color:var(--ink-mute)}
.card li::before{content:"";position:absolute;left:0;top:.62em;width:6px;height:2px;background:var(--accent)}

/* ---------- work ---------- */
.work{margin-top:34px;border-top:2px solid var(--line-strong)}
.job{border-bottom:1px solid var(--line);padding:26px 0;display:grid;grid-template-columns:250px 1fr;gap:34px}
.job-meta h3{margin:0 0 4px}
.job-tag{display:inline-block;font-size:.68rem;font-weight:900;letter-spacing:.1em;padding:2px 6px;border:1px solid var(--accent);color:var(--accent);vertical-align:2px;margin-left:7px}
.job-meta p{font-size:.84rem;color:var(--ink-mute);margin:0}
.job-body ul{margin:0;padding:0;list-style:none}
.job-body li{padding-left:16px;position:relative;margin-bottom:7px;font-size:.98rem}
.job-body li::before{content:"";position:absolute;left:0;top:.66em;width:7px;height:2px;background:var(--accent)}
.job-body li:last-child{margin-bottom:0}
@media(max-width:860px){.job{grid-template-columns:1fr;gap:14px;padding:22px 0}}

/* ---------- stack ---------- */
.stack{margin-top:30px;display:grid;gap:0;border-top:1px solid var(--line)}
.stack-row{display:grid;grid-template-columns:230px 1fr;gap:24px;padding:15px 0;border-bottom:1px solid var(--line)}
.stack-row h4{margin:0;color:var(--ink)}
.stack-row p{font-size:.96rem;color:var(--ink-mute);margin:0}
@media(max-width:720px){.stack-row{grid-template-columns:1fr;gap:4px}}

/* ---------- files / recruiter block ---------- */
.file{display:flex;gap:16px;align-items:flex-start;border:1px solid var(--line);border-left:3px solid var(--accent);padding:18px 20px;margin-bottom:12px;background:var(--paper)}
.file:hover{border-color:var(--ink)}
.file svg{width:22px;height:22px;flex:0 0 22px;margin-top:4px;fill:var(--accent)}
.file h4{margin:0 0 3px}
.file p{font-size:.9rem;color:var(--ink-mute);margin:0}
.file a{border:0}

pre.prompt{background:var(--ink);color:#f2f0ec;padding:16px 18px;font-size:.83rem;line-height:1.6;overflow-x:auto;margin:16px 0 0;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;white-space:pre-wrap}
html[data-theme=dark] pre.prompt{background:#000;border:1px solid var(--line)}

/* ---------- certs ---------- */
.certs{display:grid;grid-template-columns:repeat(2,1fr);gap:0 34px;margin-top:26px;list-style:none;padding:0}
.certs li{padding:11px 0;border-bottom:1px solid var(--line);font-size:.96rem}
.certs b{color:var(--ink);font-weight:700}
.certs span{color:var(--ink-mute)}
@media(max-width:720px){.certs{grid-template-columns:1fr}}

/* ---------- faq ---------- */
.faq{margin-top:26px;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;padding:16px 34px 16px 0;font-weight:700;color:var(--ink);position:relative;list-style:none;font-size:1.04rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:14px;font-weight:900;color:var(--accent);font-size:1.3rem;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq .a{padding:0 0 18px;font-size:.99rem;max-width:70ch}

/* ---------- form ---------- */
form{margin-top:8px}
.field{margin-bottom:16px}
label{display:block;font-size:.8rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase;color:var(--ink);margin-bottom:6px}
input,textarea{width:100%;font:inherit;font-size:1rem;padding:12px 14px;border:1px solid var(--line-strong);background:var(--paper);color:var(--ink);border-radius:0}
input:focus,textarea:focus{outline:3px solid var(--focus);outline-offset:1px}
textarea{min-height:130px;resize:vertical}
.hp{position:absolute;left:-9999px}
.form-note{font-size:.8rem;color:var(--ink-mute);margin-top:12px}
.msg{padding:14px 16px;border-left:3px solid var(--accent);background:var(--beige);font-size:.95rem;margin-bottom:20px}
html[data-theme=dark] .msg{background:#000}

.side{border:1px solid var(--line);border-top:3px solid var(--ink);padding:24px 22px}
.side h3{margin-bottom:.35em}
.side p{font-size:.96rem;color:var(--ink-mute)}
.side .btn{margin-top:14px;width:100%;text-align:center}
.kv{font-size:.95rem;margin-top:18px;border-top:1px solid var(--line);padding-top:14px}
.kv div{display:flex;justify-content:space-between;gap:12px;padding:5px 0}
.kv b{color:var(--ink)}
.kv span{color:var(--ink-mute);text-align:right}

/* ---------- footer ---------- */
footer{background:var(--bar);color:var(--bar-ink);padding:38px 0 30px;font-size:.9rem}
footer a{color:var(--bar-ink);opacity:.8}
footer a:hover{opacity:1;border-bottom-color:var(--accent)}
.foot{display:flex;flex-wrap:wrap;gap:18px 34px;align-items:baseline}
.foot-links{margin-left:auto;display:flex;gap:20px;flex-wrap:wrap}
.foot-fine{opacity:.55;font-size:.8rem;margin-top:22px;padding-top:16px;border-top:1px solid rgba(255,255,255,.12)}
@media(max-width:720px){.foot-links{margin-left:0}}

/* ---------- legal pages ---------- */
.legal{padding:clamp(40px,6vw,72px) 0}
.legal h2{font-size:1.35rem;margin-top:1.8em}
.legal h2:first-of-type{margin-top:1em}
.legal p,.legal li{font-size:1rem}
.legal ul{padding-left:20px}