/* BrainStack: dark, fast, no web fonts. */
:root{
  --bg:#0b0d17;--bg2:#11142a;--panel:#151936;--line:#262b55;
  --text:#e8eaf6;--muted:#a3a9cf;--accent:#5eead4;--accent2:#a78bfa;--warn:#fbbf24;--err:#f87171;
  --radius:14px;--wrap:1120px;
  --mono:ui-monospace,SFMono-Regular,"Cascadia Code","JetBrains Mono",Menlo,Consolas,monospace;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 var(--sans);
  background-image:radial-gradient(1000px 500px at 85% -10%,rgba(167,139,250,.14),transparent 60%),radial-gradient(800px 400px at -10% 10%,rgba(94,234,212,.10),transparent 60%);
  background-repeat:no-repeat}
img,svg{max-width:100%;height:auto}
a{color:var(--accent);text-underline-offset:3px}
a:hover{color:#99f6e4}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
h1,h2,h3{line-height:1.2;letter-spacing:-.01em}
h1{font-size:clamp(2rem,5vw,3.4rem);margin:.2em 0 .3em}
h2{font-size:clamp(1.4rem,3vw,1.9rem);margin:2em 0 .6em}
h3{font-size:1.15rem;margin:1.5em 0 .4em}
code{font-family:var(--mono);font-size:.9em;background:var(--bg2);border:1px solid var(--line);padding:.1em .35em;border-radius:6px}
pre{position:relative;background:#080a14;border:1px solid var(--line);border-radius:var(--radius);padding:1rem 1.1rem;overflow:auto;font:13.5px/1.55 var(--mono)}
pre code{background:none;border:0;padding:0;font-size:inherit}
table{width:100%;border-collapse:collapse;font-size:.95rem;display:block;overflow-x:auto}
th,td{border:1px solid var(--line);padding:.55rem .7rem;text-align:left;vertical-align:top}
th{background:var(--bg2)}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 1.25rem}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;left:-999px;top:0;background:var(--accent);color:#000;padding:.5rem 1rem;z-index:10}
.skip:focus{left:1rem}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.fine{color:var(--muted);font-size:.85rem}
.tag{display:inline-block;font:600 .75rem/1 var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--accent2);margin:0 0 .6rem}

/* Header */
.site-header{position:sticky;top:0;z-index:5;background:rgba(11,13,23,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:60px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:.5rem;color:var(--text);text-decoration:none;font-weight:700;font-size:1.15rem}
.brand b{color:var(--accent)}
.nav{display:flex;align-items:center;gap:.25rem;flex-wrap:wrap}
.nav a{color:var(--muted);text-decoration:none;padding:.45rem .7rem;border-radius:8px;font-weight:500}
.nav a:hover,.nav a[aria-current]{color:var(--text);background:var(--bg2)}
.nav a.btn{color:#04121a;background:var(--accent)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;font:600 1rem/1 var(--sans);padding:.85rem 1.25rem;border-radius:10px;border:1px solid var(--line);background:var(--panel);color:var(--text);text-decoration:none;cursor:pointer;transition:transform .12s,background .12s,border-color .12s}
.btn:hover{transform:translateY(-1px);border-color:var(--accent);color:var(--text)}
.btn-primary{background:linear-gradient(135deg,var(--accent),#38bdf8);color:#04121a;border:0}
.btn-primary:hover{color:#04121a}
.btn-small{padding:.5rem .8rem;font-size:.9rem}
.btn[disabled]{opacity:.6;cursor:wait}

/* Hero */
.hero{padding:clamp(3rem,8vw,6rem) 0 3rem}
.hero .lede{font-size:clamp(1.05rem,2vw,1.3rem);color:var(--muted);max-width:44rem}
.hero h1 span{background:linear-gradient(90deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-cta{display:flex;gap:.75rem;flex-wrap:wrap;margin-top:1.75rem}
.kicker{font:600 .85rem/1 var(--mono);color:var(--accent);letter-spacing:.06em}
.terminal{margin-top:2.5rem;max-width:44rem}
.terminal .bar{display:flex;gap:6px;padding:.6rem .8rem;background:var(--bg2);border:1px solid var(--line);border-bottom:0;border-radius:var(--radius) var(--radius) 0 0}
.terminal .bar i{width:10px;height:10px;border-radius:50%;background:#3b3f6b}
.terminal pre{margin:0;border-radius:0 0 var(--radius) var(--radius)}
.c-k{color:var(--accent2)}.c-s{color:var(--accent)}.c-m{color:var(--muted)}

/* Grids and cards */
.grid{list-style:none;padding:0;margin:1rem 0;display:grid;gap:1rem;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.25rem;transition:border-color .15s,transform .15s}
.card:hover{border-color:var(--accent2);transform:translateY(-2px)}
.card h3{margin:.1rem 0 .4rem}
.card p{color:var(--muted);margin:.2rem 0 .6rem}
.guide-card a{display:block;color:inherit;text-decoration:none;height:100%}
.guide-card .more{color:var(--accent);font-weight:600;font-size:.9rem}
.steps{counter-reset:s}
.steps .card h3::before{counter-increment:s;content:counter(s,decimal-leading-zero) " ";color:var(--accent);font-family:var(--mono)}
section.block{padding:2rem 0}

/* Newsletter */
.newsletter{margin:3rem 0;padding:1.75rem;border-radius:var(--radius);border:1px solid var(--line);background:linear-gradient(135deg,rgba(94,234,212,.08),rgba(167,139,250,.10));display:grid;gap:1rem}
.newsletter h2{margin:0 0 .3rem}
.newsletter p{margin:0;color:var(--muted)}
.nl-form{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center}
.nl-form input[type=email]{flex:1 1 240px;min-width:0}
.nl-status{flex-basis:100%;margin:0;min-height:1.4em;font-size:.95rem}
.nl-status.ok{color:var(--accent)}.nl-status.err{color:var(--err)}

/* Forms */
input,select,textarea{font:inherit;color:var(--text);background:#0a0c19;border:1px solid var(--line);border-radius:10px;padding:.7rem .85rem;width:100%}
textarea{min-height:6.5rem;resize:vertical;font-family:var(--mono);font-size:.9rem}
input:focus,select:focus,textarea:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 3px rgba(94,234,212,.2)}
label{font-weight:600;font-size:.95rem}
.field{display:grid;gap:.35rem;margin-bottom:1rem}
.field small{color:var(--muted);font-weight:400}
.checks{display:grid;gap:.45rem;margin:0;padding:0;border:0}
.checks legend{font-weight:600;margin-bottom:.4rem}
.checks label{font-weight:400;display:flex;gap:.55rem;align-items:flex-start}
.checks input{width:auto;margin-top:.35rem;accent-color:var(--accent)}
.row2{display:grid;gap:0 1rem;grid-template-columns:1fr}
@media (min-width:640px){.row2{grid-template-columns:1fr 1fr}}

/* Generator */
.gen{display:grid;gap:1.5rem;grid-template-columns:1fr;padding-bottom:3rem}
@media (min-width:980px){.gen{grid-template-columns:minmax(0,1fr) minmax(0,1.05fr)}.gen-out{position:sticky;top:76px;align-self:start}}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.25rem}
.panel h2{margin-top:0;font-size:1.2rem}
details.panel summary{cursor:pointer;font-weight:700}
.tabs{display:flex;flex-wrap:wrap;gap:.35rem;margin-bottom:.75rem}
.tabs button{font:600 .85rem/1 var(--mono);padding:.55rem .7rem;border-radius:8px;border:1px solid var(--line);background:var(--bg2);color:var(--muted);cursor:pointer}
.tabs button[aria-selected=true]{color:#04121a;background:var(--accent);border-color:var(--accent)}
.out-path{font:600 .85rem var(--mono);color:var(--accent2);margin:.25rem 0 .6rem}
#output{min-height:420px;max-height:70vh;white-space:pre-wrap;overflow:auto;font-size:13px;line-height:1.5}
.out-actions{display:flex;gap:.5rem;flex-wrap:wrap;margin-top:.75rem;align-items:center}
.out-hint{color:var(--muted);font-size:.9rem}

/* Guides */
.guide{padding-top:1.5rem}
.crumbs{font-size:.9rem;color:var(--muted)}
.crumbs a{color:var(--muted)}
.guide-head{max-width:46rem;padding:1.5rem 0 .5rem}
.guide-head .lede{font-size:1.15rem;color:var(--muted)}
.prose{max-width:46rem}
.prose li{margin:.3rem 0}
.prose blockquote,.note{border-left:3px solid var(--accent2);background:var(--bg2);padding:.8rem 1rem;margin:1.2rem 0;border-radius:0 10px 10px 0;color:var(--text)}
.note.warn{border-color:var(--warn)}
.copy-btn{position:absolute;top:.5rem;right:.5rem;font:600 .75rem var(--mono);padding:.35rem .55rem;border-radius:6px;border:1px solid var(--line);background:var(--panel);color:var(--muted);cursor:pointer}
.copy-btn:hover{color:var(--text);border-color:var(--accent)}
.cta-box{max-width:46rem;margin:3rem 0 1rem;padding:1.5rem;border:1px solid var(--accent);border-radius:var(--radius);background:rgba(94,234,212,.06)}
.cta-box h2{margin-top:0}
.pager{max-width:46rem;display:flex;justify-content:space-between;gap:1rem;margin:2rem 0;flex-wrap:wrap}
.pager a{flex:1 1 200px;padding:1rem;border:1px solid var(--line);border-radius:10px;text-decoration:none;background:var(--panel)}
.pager a:last-child{text-align:right}

/* Footer */
.site-footer{border-top:1px solid var(--line);margin-top:4rem;padding:2rem 0}
.footer-inner{display:flex;justify-content:space-between;gap:2rem;flex-wrap:wrap}
.footer-inner nav{display:flex;flex-wrap:wrap;gap:.4rem 1.2rem;align-items:flex-start}
.footer-inner nav a{color:var(--muted);text-decoration:none}
.footer-inner nav a:hover{color:var(--text)}
.footer-inner>div{max-width:24rem}
.page{max-width:46rem;padding:2.5rem 0}
@media (max-width:600px){
  .site-header{position:static}
  .header-inner{padding-top:.4rem;padding-bottom:.4rem;gap:.25rem}
  .nav a{padding:.35rem .55rem;font-size:.95rem}
  .newsletter{padding:1.25rem}
}