/* ARTUR — SELF TEST theme
   Palette and layout homage to the Atari 8-bit XL/XE SELF TEST diagnostic screen. */

:root{
  --bg:#0e3d1c;
  --bg-deep:#0a2f15;
  --rule:#dad7c7;
  --orange:#e8952e;
  --purple:#a99bd8;
  --lime:#c3d92c;
  --text:#dad7c7;
  --dim:#7fa384;
  --mono:'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --disp:'Silkscreen', var(--mono);
}

*{box-sizing:border-box;}
::selection{background:var(--lime);color:var(--bg);}

html{scroll-behavior:smooth;}
html,body{margin:0;background:var(--bg);}
body{
  font-family:var(--mono);
  color:var(--text);
  font-size:16px;
  line-height:1.7;
  min-height:100vh;
}

a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
a:focus-visible, button:focus-visible{outline:2px solid var(--lime);outline-offset:3px;}

img{max-width:100%;display:block;}

.scan{
  position:fixed;inset:0;pointer-events:none;z-index:40;
  background:repeating-linear-gradient(to bottom, rgba(0,0,0,0.09) 0px, rgba(0,0,0,0.09) 1px, transparent 1px, transparent 3px),
             radial-gradient(ellipse 120% 90% at 50% 0%, rgba(0,0,0,0) 55%, rgba(0,0,0,0.35) 100%);
  opacity:0.65;
}

.lang-fixed{
  position:fixed;top:14px;right:14px;z-index:41;
  display:flex;gap:8px;
  font-family:var(--disp);font-weight:700;font-size:12px;
}
.lang-fixed a{
  background:transparent;border:1px solid var(--dim);color:var(--dim);
  padding:5px 8px;cursor:pointer;letter-spacing:0.05em;
}
.lang-fixed a.active{background:var(--lime);color:var(--bg);border-color:var(--lime);}
.lang-fixed a:hover{border-color:var(--lime);color:var(--lime);}
.lang-fixed a.active:hover{color:var(--bg);}

main{
  max-width:520px;margin:0 auto;padding:60px 24px;
  min-height:100vh;
  display:flex;flex-direction:column;justify-content:center;
}

.rule{height:3px;background:var(--rule);margin:28px auto;max-width:460px;width:100%;}

/* ---------- HERO ---------- */
.menu-hero{text-align:center;}
.kicker{font-size:12px;letter-spacing:0.14em;color:var(--dim);margin:0 0 20px;}
.st-title{
  font-family:var(--disp);font-weight:700;
  font-size:clamp(38px,11vw,72px);
  letter-spacing:0.04em;
  color:var(--orange);
  margin:0;
  text-wrap:balance;
}
.person-name{
  font-family:var(--disp);font-weight:700;
  font-size:clamp(15px,3.2vw,19px);
  color:var(--purple);
  letter-spacing:0.08em;
  margin:16px 0 18px;
}
.bio{
  font-size:15px;color:var(--text);
  max-width:420px;margin:0 auto;text-align:left;
}
.bio::before{content:"> ";color:var(--purple);}

.lang-row{
  display:flex;align-items:center;justify-content:center;gap:10px;
  font-family:var(--disp);font-weight:700;font-size:16px;
  letter-spacing:0.05em;flex-wrap:wrap;
}
.lang-row .sep{color:var(--rule);font-family:var(--mono);font-weight:400;font-size:13px;}
.lang-chip{
  background:transparent;border:none;color:var(--purple);
  padding:6px 12px;
  font-family:var(--disp);font-weight:700;font-size:16px;letter-spacing:0.05em;
}
.lang-chip.active{background:var(--lime);color:var(--bg);}
.lang-chip:hover{background:var(--lime);color:var(--bg);}

/* ---------- CONTACT BLOCK ---------- */
.block{text-align:center;}
.tag{font-family:var(--disp);font-weight:400;font-size:12px;letter-spacing:0.1em;color:var(--dim);margin:0 0 10px;}
.heading{font-family:var(--disp);font-weight:700;font-size:clamp(22px,6vw,30px);color:var(--orange);margin:0 0 22px;letter-spacing:0.03em;}

.port-list{display:grid;gap:2px;text-align:left;}
.port-row{display:grid;grid-template-columns:56px 90px 1fr;gap:14px;padding:10px 16px;border:1px solid rgba(218,215,199,0.2);font-size:13px;align-items:center;}
.port-id{color:var(--purple);}
.port-label{color:var(--dim);}
.port-val{color:var(--text);}
.port-val:hover{color:var(--lime);}

/* ---------- FOOTER ---------- */
.summary{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;font-size:12px;color:var(--dim);padding-top:36px;text-align:center;}
.summary b{color:var(--lime);}
.summary-note{width:100%;margin-top:4px;}

/* ---------- ROOT LANGUAGE CHOOSER ---------- */
.chooser{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;}
.chooser-inner{text-align:center;}

@media (max-width:520px){
  .port-row{grid-template-columns:1fr;}
  .lang-fixed{position:static;justify-content:center;margin-bottom:20px;padding-top:14px;}
  main{padding-top:20px;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
}