/* ============================================================
   IDEALE LABS — design system
   Aesthetic: normative spec document / industrial ledger.
   Ink-dark ground, cream type, container-orange accent,
   editorial serif display + engineering mono labels.
   ============================================================ */

@font-face{font-family:'Instrument Serif';font-style:normal;font-weight:400;font-display:swap;src:url('../fonts/instrumentserif-400.woff2') format('woff2');}
@font-face{font-family:'Instrument Serif';font-style:italic;font-weight:400;font-display:swap;src:url('../fonts/instrumentserif-400i.woff2') format('woff2');}
@font-face{font-family:'Archivo';font-style:normal;font-weight:100 900;font-display:swap;src:url('../fonts/archivo-var.woff2') format('woff2');}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;src:url('../fonts/ibmplexmono-400.woff2') format('woff2');}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:500;font-display:swap;src:url('../fonts/ibmplexmono-500.woff2') format('woff2');}

:root{
  --ink:#0b0f14;
  --ink-2:#0f151d;
  --ink-3:#131b25;
  --line:#1f2a35;
  --line-soft:#182129;
  --paper:#ece5d8;
  --paper-dim:#939ca4;
  --paper-faint:#5c666e;
  --accent:#ff5c1f;
  --accent-soft:rgba(255,92,31,.12);
  --ok:#48d17a;
  --serif:'Instrument Serif',Georgia,serif;
  --sans:'Archivo',-apple-system,'Helvetica Neue',sans-serif;
  --mono:'IBM Plex Mono','SF Mono',Menlo,monospace;
  --gutter:clamp(1.25rem,4vw,4rem);
  --w:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001s!important;transition-duration:.001s!important;}
}

body{
  margin:0;
  background:var(--ink);
  color:var(--paper);
  font-family:var(--sans);
  font-size:1.0625rem;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  position:relative;
}
/* blueprint grid + top glow */
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(90rem 40rem at 70% -10%,rgba(255,92,31,.07),transparent 60%),
    linear-gradient(rgba(236,229,216,.025) 1px,transparent 1px),
    linear-gradient(90deg,rgba(236,229,216,.025) 1px,transparent 1px);
  background-size:auto,72px 72px,72px 72px;
}
/* grain */
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.35;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .04 0'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)'/%3E%3C/svg%3E");
}

::selection{background:var(--accent);color:var(--ink);}

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

.wrap{max-width:var(--w);margin:0 auto;padding-inline:var(--gutter);}

/* ---------- type ---------- */
h1,h2,h3{font-family:var(--serif);font-weight:400;line-height:1.04;margin:0;letter-spacing:-.01em;}
h1{font-size:clamp(2.9rem,7.2vw,5.6rem);}
h2{font-size:clamp(2.1rem,4.6vw,3.6rem);}
h3{font-size:clamp(1.5rem,2.6vw,2rem);}
h1 em,h2 em,h3 em{font-style:italic;color:var(--accent);}
p{margin:0 0 1rem;}
.lede{font-size:clamp(1.1rem,1.8vw,1.3rem);color:var(--paper-dim);max-width:44rem;}
.dim{color:var(--paper-dim);}

.kicker{
  font-family:var(--mono);font-size:.72rem;font-weight:500;
  letter-spacing:.22em;text-transform:uppercase;color:var(--paper-dim);
  display:flex;align-items:center;gap:.75rem;margin-bottom:1.5rem;
}
.kicker::before{content:"";width:2rem;height:1px;background:var(--accent);flex:none;}
.kicker b{color:var(--accent);font-weight:500;}

/* ---------- header ---------- */
.site-head{
  position:sticky;top:0;z-index:50;
  background:color-mix(in srgb,var(--ink) 88%,transparent);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-soft);
}
.site-head .wrap{display:flex;align-items:center;gap:2rem;height:4.25rem;}
.brand{
  font-family:var(--mono);font-weight:500;font-size:.95rem;letter-spacing:.06em;
  text-decoration:none;display:flex;align-items:center;gap:.6rem;
}
.brand::before{
  content:"";width:.85rem;height:.85rem;flex:none;
  background:linear-gradient(135deg,var(--accent) 0 50%,var(--paper) 50% 100%);
}
.brand span{color:var(--paper-dim);}
.site-nav{margin-left:auto;display:flex;align-items:center;gap:1.75rem;}
.site-nav a{
  font-family:var(--mono);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;
  text-decoration:none;color:var(--paper-dim);transition:color .2s;
}
.site-nav a:hover{color:var(--paper);}
.site-nav a[aria-current="page"]{color:var(--accent);}
.lang{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;
  border:1px solid var(--line);padding:.35rem .7rem;text-decoration:none;
  color:var(--paper-dim);transition:border-color .2s,color .2s;
}
.lang:hover{border-color:var(--accent);color:var(--accent);}
.nav-toggle{display:none;background:none;border:1px solid var(--line);color:var(--paper);
  font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;padding:.4rem .7rem;cursor:pointer;}
@media(max-width:820px){
  .nav-toggle{display:block;margin-left:auto;}
  .site-nav{
    display:none;position:absolute;left:0;right:0;top:4.25rem;
    flex-direction:column;align-items:flex-start;gap:0;
    background:var(--ink-2);border-bottom:1px solid var(--line);
    padding:0 var(--gutter) 1rem;
  }
  .site-nav.open{display:flex;}
  .site-nav a{padding:.9rem 0;width:100%;border-bottom:1px solid var(--line-soft);}
  .site-nav .lang{border:none;padding:.9rem 0;}
}

/* ---------- hero ---------- */
.hero{padding:clamp(5rem,12vh,9rem) 0 clamp(3.5rem,8vh,6rem);position:relative;overflow:hidden;}
.hero h1{max-width:16ch;}
.hero .lede{margin-top:1.75rem;}
.hero-actions{display:flex;flex-wrap:wrap;gap:1rem;margin-top:2.5rem;}
.hero-coords{
  position:absolute;right:var(--gutter);top:clamp(5rem,12vh,9rem);
  font-family:var(--mono);font-size:.7rem;line-height:2;letter-spacing:.12em;
  color:var(--paper-faint);text-align:right;text-transform:uppercase;
}
@media(max-width:1020px){.hero-coords{display:none;}}

.btn{
  display:inline-block;font-family:var(--mono);font-size:.8rem;font-weight:500;
  letter-spacing:.14em;text-transform:uppercase;text-decoration:none;
  padding:.95rem 1.6rem;border:1px solid var(--accent);color:var(--ink);
  background:var(--accent);transition:background .2s,color .2s,transform .2s;
}
.btn:hover{background:transparent;color:var(--accent);}
.btn.ghost{background:transparent;color:var(--paper);border-color:var(--line);}
.btn.ghost:hover{border-color:var(--accent);color:var(--accent);}

/* ---------- marquee ---------- */
.marquee{
  border-block:1px solid var(--line);overflow:hidden;padding:.85rem 0;
  background:var(--ink-2);
}
.marquee-track{display:flex;gap:0;width:max-content;animation:marquee 42s linear infinite;}
.marquee:hover .marquee-track{animation-play-state:paused;}
.marquee span{
  font-family:var(--mono);font-size:.75rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--paper-dim);white-space:nowrap;padding:0 1.4rem;
}
.marquee span::after{content:"//";color:var(--accent);margin-left:2.8rem;}
@keyframes marquee{to{transform:translateX(-50%);}}

/* ---------- sections ---------- */
.sec{padding:clamp(4rem,10vh,7.5rem) 0;border-top:1px solid var(--line-soft);}
.sec-head{max-width:52rem;margin-bottom:3rem;}
.sec-head h2{margin-bottom:1.25rem;}

/* ---------- domain panels ---------- */
.domains{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);}
.domain{
  padding:2.5rem;border-right:1px solid var(--line);border-bottom:1px solid var(--line);
  position:relative;background:linear-gradient(180deg,transparent,rgba(15,21,29,.6));
  transition:background .3s;
}
.domain:nth-child(2n){border-right:none;}
.domain:nth-last-child(-n+2){border-bottom:none;}
.domain:hover{background:var(--ink-3);}
.domain .idx{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.18em;color:var(--accent);
  display:block;margin-bottom:1.4rem;
}
.domain h3{margin-bottom:1rem;}
.domain p{color:var(--paper-dim);font-size:.98rem;}
.domain:hover .idx{color:var(--paper);}
.tags{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1.5rem;padding:0;list-style:none;}
.tags li{
  font-family:var(--mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;
  border:1px solid var(--line);color:var(--paper-dim);padding:.3rem .6rem;
}
@media(max-width:820px){
  .domains{grid-template-columns:1fr;}
  .domain{border-right:none;}
  .domain:nth-last-child(2){border-bottom:1px solid var(--line);}
}

/* ---------- spec rows (requirement ledger) ---------- */
.spec{border-top:1px solid var(--line);list-style:none;margin:0;padding:0;}
.spec li{
  display:grid;grid-template-columns:8rem 1fr;gap:1.5rem;
  padding:1.4rem 0;border-bottom:1px solid var(--line);align-items:baseline;
}
.spec .rid{font-family:var(--mono);font-size:.78rem;font-weight:500;letter-spacing:.14em;color:var(--accent);}
.spec p{margin:0;color:var(--paper-dim);}
.spec strong{color:var(--paper);font-weight:600;}
@media(max-width:640px){.spec li{grid-template-columns:1fr;gap:.4rem;}}
.spec h3{font-size:1.35rem;margin:0 0 .55rem;}
.spec .exit{
  font-family:var(--mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--paper-faint);margin:.85rem 0 0;
}
.spec .exit b{color:var(--ok);font-weight:500;}

/* ---------- split layout ---------- */
.split{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(2rem,5vw,5rem);align-items:start;}
.split.rev{grid-template-columns:minmax(0,7fr) minmax(0,5fr);}
@media(max-width:900px){.split,.split.rev{grid-template-columns:1fr;}}
.sticky-col{position:sticky;top:6rem;}
@media(max-width:900px){.sticky-col{position:static;}}

/* ---------- terminal ---------- */
.term{
  background:#080b0f;border:1px solid var(--line);
  font-family:var(--mono);font-size:.82rem;line-height:1.9;
  box-shadow:0 30px 60px -30px rgba(0,0,0,.8);
}
.term-bar{
  display:flex;gap:.45rem;padding:.8rem 1rem;border-bottom:1px solid var(--line-soft);
  align-items:center;
}
.term-bar i{width:.65rem;height:.65rem;border-radius:50%;background:var(--line);}
.term-bar i:first-child{background:var(--accent);}
.term-bar em{
  font-style:normal;color:var(--paper-faint);font-size:.68rem;letter-spacing:.1em;margin-left:.6rem;
}
.term-body{padding:1.25rem 1.4rem;overflow-x:auto;}
.term-body .ln{display:block;white-space:pre;color:var(--paper-dim);}
.term-body .cmd{color:var(--paper);}
.term-body .cmd::before{content:"$ ";color:var(--accent);}
.term-body .ok{color:var(--ok);}
.term-body .cm{color:var(--paper-faint);}

/* state machine diagram */
.diagram{
  font-family:var(--mono);font-size:clamp(.62rem,1.5vw,.8rem);line-height:1.75;
  color:var(--paper-dim);background:#080b0f;border:1px solid var(--line);
  padding:1.5rem;overflow-x:auto;margin:0;
}
.diagram b{color:var(--paper);font-weight:500;}
.diagram i{font-style:normal;color:var(--accent);}

/* ---------- principles ---------- */
.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);}
.principle{background:var(--ink);padding:2rem;}
.principle:hover{background:var(--ink-3);}
.principle .rid{font-family:var(--mono);font-size:.7rem;letter-spacing:.16em;color:var(--accent);display:block;margin-bottom:1rem;}
.principle h3{font-size:1.35rem;margin-bottom:.75rem;}
.principle p{color:var(--paper-dim);font-size:.94rem;margin:0;}
@media(max-width:900px){.principles{grid-template-columns:1fr 1fr;}}
@media(max-width:600px){.principles{grid-template-columns:1fr;}}

/* ---------- method steps ---------- */
.steps{counter-reset:step;display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(1.5rem,3vw,3rem);}
.step{border-top:1px solid var(--accent);padding-top:1.5rem;}
.step .rid{font-family:var(--mono);font-size:.72rem;letter-spacing:.18em;color:var(--paper-dim);display:block;margin-bottom:1rem;text-transform:uppercase;}
.step h3{font-size:1.4rem;margin-bottom:.75rem;}
.step p{color:var(--paper-dim);font-size:.95rem;}
@media(max-width:820px){.steps{grid-template-columns:1fr;}}

/* ---------- CTA band ---------- */
.cta{
  border-top:1px solid var(--line);text-align:center;
  padding:clamp(5rem,12vh,8rem) 0;position:relative;overflow:hidden;
}
.cta::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(60rem 30rem at 50% 120%,rgba(255,92,31,.12),transparent 65%);
}
.cta h2{max-width:20ch;margin-inline:auto;}
.cta .lede{margin:1.5rem auto 2.5rem;}
.cta .lede{max-width:38rem;}

/* ---------- footer ---------- */
.site-foot{border-top:1px solid var(--line);padding:3.5rem 0 2.5rem;background:var(--ink-2);}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:2.5rem;}
.foot-tag{font-family:var(--serif);font-size:1.6rem;line-height:1.2;max-width:18ch;}
.foot-tag em{font-style:italic;color:var(--accent);}
.foot-meta{font-family:var(--mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--paper-faint);margin-top:1.5rem;line-height:2.1;}
.site-foot h4{font-family:var(--mono);font-size:.7rem;font-weight:500;letter-spacing:.2em;text-transform:uppercase;color:var(--paper-faint);margin:0 0 1rem;}
.site-foot ul{list-style:none;margin:0;padding:0;}
.site-foot li{margin-bottom:.6rem;}
.site-foot li a{color:var(--paper-dim);text-decoration:none;font-size:.92rem;transition:color .2s;}
.site-foot li a:hover{color:var(--accent);}
.foot-base{
  margin-top:3rem;padding-top:1.5rem;border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;
  font-family:var(--mono);font-size:.7rem;letter-spacing:.12em;color:var(--paper-faint);
}
.foot-base a{color:inherit;text-decoration:none;}
.foot-base a:hover{color:var(--accent);}
@media(max-width:820px){.foot-grid{grid-template-columns:1fr;}}

/* ---------- forms ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.25rem;}
.form-grid .full{grid-column:1/-1;}
@media(max-width:640px){.form-grid{grid-template-columns:1fr;}}
label{
  display:block;font-family:var(--mono);font-size:.68rem;font-weight:500;
  letter-spacing:.18em;text-transform:uppercase;color:var(--paper-dim);margin-bottom:.5rem;
}
input,select,textarea{
  width:100%;background:var(--ink-2);border:1px solid var(--line);color:var(--paper);
  font-family:var(--sans);font-size:.95rem;padding:.85rem 1rem;
  transition:border-color .2s;border-radius:0;-webkit-appearance:none;appearance:none;
}
select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%23ff5c1f'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 1rem center;}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);}
textarea{min-height:9rem;resize:vertical;}
.form-note{font-family:var(--mono);font-size:.72rem;color:var(--paper-faint);letter-spacing:.06em;}

.contact-aside{border:1px solid var(--line);padding:2rem;background:var(--ink-2);}
.contact-aside dt{font-family:var(--mono);font-size:.68rem;letter-spacing:.18em;text-transform:uppercase;color:var(--paper-faint);margin-bottom:.35rem;}
.contact-aside dd{margin:0 0 1.5rem;}
.contact-aside dd:last-child{margin-bottom:0;}
.contact-aside a{color:var(--accent);text-decoration:none;}

/* ---------- prose (policies) ---------- */
.prose{max-width:46rem;}
.prose h2{font-size:clamp(1.8rem,3vw,2.4rem);margin:3rem 0 1rem;}
.prose h3{font-size:1.25rem;font-family:var(--sans);font-weight:600;margin:2rem 0 .6rem;}
.prose p,.prose li{color:var(--paper-dim);}
.prose ul{padding-left:1.2rem;}

/* ---------- reveal animation ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease;transition-delay:var(--d,0s);}
.reveal.in{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;}}

/* skip link */
.skip{position:absolute;left:-999px;top:0;background:var(--accent);color:var(--ink);padding:.6rem 1rem;z-index:99;font-family:var(--mono);font-size:.8rem;}
.skip:focus{left:0;}