/* PRO TECH LAB — errorcodes.site — dark terminal theme */
:root{
  --bg:#0a0e1a; --bg2:#0d1322; --card:#121a2e; --card2:#16203a;
  --ink:#e8eef9; --muted:#8b9bb8; --faint:#5b6b8c;
  --green:#00e676; --green-dim:#00b35c; --cyan:#22d3ee;
  --warn:#ffb020; --err:#ff5470;
  --border:#1f2a45; --radius:10px;
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sans:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);background:var(--bg);color:var(--ink);line-height:1.7;font-size:17px;
  background-image:radial-gradient(rgba(0,230,118,.045) 1px,transparent 1px);background-size:26px 26px}
.wrap{max-width:980px;margin:0 auto;padding:0 20px}
.progress-bar{position:fixed;top:0;left:0;height:3px;width:0;background:linear-gradient(90deg,var(--green),var(--cyan));z-index:200;box-shadow:0 0 12px rgba(0,230,118,.7)}
/* header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(10,14,26,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.site-header.scrolled{border-bottom-color:var(--green-dim);box-shadow:0 4px 24px rgba(0,0,0,.5)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-family:var(--mono);font-weight:700;font-size:1.15rem;letter-spacing:-.02em}
.brand::before{content:">_";color:var(--green);font-weight:800}
.brand-logo{width:32px;height:32px}
.brand .dot{color:var(--green)}
.site-nav ul{display:flex;gap:2px;list-style:none}
.site-nav a{display:block;padding:9px 14px;border-radius:6px;text-decoration:none;color:var(--muted);font-family:var(--mono);font-size:.85rem;font-weight:600}
.site-nav a:hover{background:#16203a;color:var(--green)}
.nav-toggle{display:none;background:none;border:1px solid var(--border);border-radius:6px;cursor:pointer;padding:9px 10px}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--green);margin:4px 0;border-radius:2px}
/* drawer */
.drawer-overlay{position:fixed;inset:0;background:rgba(4,7,14,.7);opacity:0;pointer-events:none;transition:opacity .25s;z-index:150}
.drawer{position:fixed;top:0;right:0;height:100dvh;width:min(320px,85vw);background:var(--bg2);z-index:160;transform:translateX(100%);transition:transform .28s ease;border-left:1px solid var(--green-dim);display:flex;flex-direction:column}
body.drawer-open .drawer{transform:translateX(0)}
body.drawer-open .drawer-overlay{opacity:1;pointer-events:auto}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border);font-family:var(--mono);color:var(--green)}
.drawer-close{background:none;border:0;font-size:1.8rem;cursor:pointer;color:var(--muted);line-height:1}
.drawer-nav{padding:12px;display:flex;flex-direction:column;gap:2px}
.drawer-link{display:block;padding:12px 14px;border-radius:8px;text-decoration:none;color:var(--ink);font-family:var(--mono);font-size:.9rem}
.drawer-link:hover{background:#16203a;color:var(--green)}
/* hero — terminal window look, built on existing markup */
.hero{padding:56px 20px 48px}
.hero .wrap{max-width:760px;background:#05080f;border:1px solid var(--border);border-radius:12px;box-shadow:0 24px 60px rgba(0,0,0,.55),0 0 0 1px rgba(0,230,118,.06);padding:0 0 34px;position:relative;overflow:hidden}
.hero .wrap::before{content:"";display:block;height:42px;background:#0d1322 radial-gradient(circle at 24px 21px,#ff5f57 6px,transparent 7px),radial-gradient(circle at 46px 21px,#febc2e 6px,transparent 7px),radial-gradient(circle at 68px 21px,#28c840 6px,transparent 7px);border-bottom:1px solid var(--border)}
.hero h1{font-family:var(--mono);font-size:1.9rem;line-height:1.35;margin:30px 30px 12px;font-weight:700;color:#fff;text-align:left}
.hero h1::before{content:"$ ";color:var(--green)}
.hero h1 .hl{color:var(--green)}
.hero p{color:var(--muted);max-width:600px;margin:0 30px 22px;font-size:1rem;text-align:left}
.hero .searchbar{margin:0 30px}
.searchbar{display:flex;max-width:560px;background:#0d1322;border:1px solid var(--border);border-radius:8px;padding:5px;transition:border-color .2s}
.searchbar:focus-within{border-color:var(--green-dim);box-shadow:0 0 0 3px rgba(0,230,118,.12)}
.searchbar input{flex:1;border:0;outline:0;padding:12px 16px;font-size:1rem;background:transparent;color:var(--ink);font-family:var(--mono)}
.searchbar input::placeholder{color:var(--faint)}
.searchbar button{border:0;background:var(--green);color:#04140a;font-family:var(--mono);font-weight:700;padding:12px 26px;border-radius:6px;cursor:pointer;font-size:.95rem}
.searchbar button:hover{background:var(--cyan)}
.popular-codes{margin:18px 30px 0;font-size:.85rem;color:var(--faint);font-family:var(--mono);text-align:left}
.popular-codes a{color:var(--cyan);text-decoration:none;margin:0 8px;border-bottom:1px dotted var(--cyan)}
.popular-codes a:hover{color:var(--green)}
/* sections */
.section{padding:44px 0}
.section h2{font-family:var(--mono);font-size:1.4rem;margin-bottom:6px;font-weight:700;color:#fff}
.section h2::before{content:"// ";color:var(--green)}
.section .lede{color:var(--muted);margin-bottom:24px;max-width:720px;font-size:.98rem}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.card{background:var(--card);border:1px solid var(--border);border-left:3px solid var(--green-dim);border-radius:8px;overflow:hidden;text-decoration:none;color:inherit;display:flex;flex-direction:column;transition:transform .15s,box-shadow .15s,border-color .15s}
.card:hover{transform:translateY(-3px);border-color:var(--green-dim);box-shadow:0 12px 32px rgba(0,230,118,.1)}
.card-body{padding:18px}
.card .cat{display:inline-block;font-family:var(--mono);font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--green);background:rgba(0,230,118,.08);border:1px solid rgba(0,230,118,.25);border-radius:4px;padding:3px 10px;margin-bottom:10px}
.card h3{font-size:1.02rem;line-height:1.45;margin-bottom:8px;font-weight:600}
.card p{color:var(--muted);font-size:.9rem}
.card .code-chip{display:inline-block;font-family:var(--mono);font-size:.8rem;background:#05080f;color:var(--cyan);border:1px solid var(--border);border-radius:4px;padding:3px 9px;margin-bottom:10px}
/* article */
.kicker{display:inline-block;font-family:var(--mono);font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--green);margin:28px 0 10px}
.kicker::before{content:"[ "}
.kicker::after{content:" ]"}
article h1{font-family:var(--mono);font-size:1.75rem;line-height:1.35;margin-bottom:10px;font-weight:700;color:#fff}
.byline{color:var(--faint);font-size:.88rem;margin-bottom:20px;font-family:var(--mono)}
.error-banner{position:relative;background:#04070d;border:1px solid var(--border);border-left:4px solid var(--err);border-radius:8px;padding:22px 24px;margin:0 0 26px;font-family:var(--mono);box-shadow:inset 0 0 40px rgba(255,84,112,.05)}
.error-banner::before{content:"ERROR_LOG";position:absolute;top:-11px;left:18px;background:var(--err);color:#0a0e1a;font-size:.62rem;font-weight:800;letter-spacing:.12em;padding:2px 10px;border-radius:4px}
.error-banner .code{font-size:1.45rem;font-weight:700;color:var(--green);display:block;margin:6px 0;word-break:break-all}
.error-banner .code::before{content:"$ "}
.error-banner .code::after{content:"▊";color:var(--green);animation:blink 1.1s steps(1) infinite;margin-left:4px}
@keyframes blink{50%{opacity:0}}
.error-banner .meaning{font-family:var(--sans);font-size:.95rem;color:var(--muted)}
.copy-btn{position:absolute;top:12px;right:12px;background:#16203a;border:1px solid var(--border);color:var(--cyan);font-family:var(--mono);font-size:.72rem;font-weight:700;padding:6px 12px;border-radius:6px;cursor:pointer}
.copy-btn:hover{border-color:var(--cyan);color:#fff}
.summary-box{background:rgba(0,230,118,.05);border:1px solid rgba(0,230,118,.3);border-radius:8px;padding:18px 20px;margin:24px 0;font-size:.96rem}
.summary-box strong{color:var(--green)}
article h2{font-family:var(--mono);font-size:1.3rem;margin:34px 0 12px;font-weight:700;color:#fff;padding-top:8px}
article h2::before{content:"# ";color:var(--green)}
article h3{font-size:1.1rem;margin:24px 0 8px;font-weight:700;color:var(--ink)}
article p{margin-bottom:14px;color:#c6d2e8}
article ul,article ol{margin:0 0 16px 22px;color:#c6d2e8}
article li{margin-bottom:8px}
.steps{counter-reset:step;list-style:none;margin-left:0}
.steps li{counter-increment:step;position:relative;padding:14px 16px 14px 64px;background:var(--card);border:1px solid var(--border);border-radius:8px;margin-bottom:10px;font-size:.96rem}
.steps li::before{content:"0" counter(step);position:absolute;left:16px;top:15px;font-family:var(--mono);font-weight:700;color:var(--green);font-size:.95rem}
.checklist{list-style:none;margin-left:0}
.checklist li{padding:10px 14px 10px 42px;background:rgba(0,230,118,.06);border:1px solid rgba(0,230,118,.28);border-radius:8px;margin-bottom:8px;position:relative;font-size:.95rem}
.checklist li::before{content:"[✓]";position:absolute;left:14px;color:var(--green);font-family:var(--mono);font-weight:700}
/* faq */
.faq{margin:36px 0}
.faq h2{margin-bottom:14px}
.faq-item{border:1px solid var(--border);border-radius:8px;margin-bottom:10px;background:var(--card);overflow:hidden}
.faq-item summary{padding:16px 20px;cursor:pointer;font-weight:600;list-style:none;font-size:.98rem}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";float:right;color:var(--green);font-family:var(--mono);font-weight:800}
.faq-item[open] summary::after{content:"−"}
.faq-a{padding:0 20px 18px;color:var(--muted);font-size:.95rem}
/* related */
.related{margin:40px 0 20px}
/* footer */
.site-footer{background:#05080f;border-top:1px solid var(--border);margin-top:48px;padding:40px 0 28px;font-size:.92rem}
.site-footer .brand{font-size:1.05rem}
.site-footer a{color:var(--cyan);text-decoration:none}
.site-footer a:hover{color:var(--green)}
.site-footer .tiny{font-size:.8rem;color:var(--faint);margin-top:12px;font-family:var(--mono)}
/* category hero */
.cat-hero{background:linear-gradient(135deg,#05080f,#0d1a33);border-bottom:1px solid var(--border);padding:52px 0;text-align:center}
.cat-hero h1{font-family:var(--mono);font-size:1.9rem;margin-bottom:8px;color:#fff}
.cat-hero h1 .hl{color:var(--green)}
.cat-hero p{color:var(--muted);max-width:640px;margin:0 auto;font-size:.98rem}
/* search results */
#searchResults{max-width:560px;margin:12px auto 0;text-align:left;display:none}
#searchResults a{display:block;background:var(--card);border:1px solid var(--border);color:var(--ink);text-decoration:none;padding:10px 16px;border-radius:8px;margin-bottom:6px;font-size:.92rem;font-family:var(--mono)}
#searchResults a:hover{border-color:var(--green-dim);color:var(--green)}
@media(max-width:760px){
  .site-nav{display:none}
  .nav-toggle{display:block}
  .hero h1{font-size:1.4rem;margin-left:18px;margin-right:18px}
  .hero p{margin-left:18px;margin-right:18px}
  .hero .searchbar{margin:0 18px}
  .popular-codes{margin:14px 18px 0}
  article h1{font-size:1.35rem}
  body{font-size:16px}
  .error-banner .code{font-size:1.15rem}
}