/* ============ Letta — Supply Chain & Demand Intelligence ============ */
:root{
  --ink:#14171E; --graphite:#1B212D; --graphite-2:#232B3A;
  --bone:#F0ECE2; --paper:#FAF8F3; --white:#fff;
  --line:#E1DBCE; --line-d:#2D3543;
  --muted:#5C6270; --muted-d:#8A94A6;
  --teal:#0E7C86; --teal-2:#13A2AE; --teal-ink:#0a5157;
  --amber:#DE9F3A; --amber-soft:#f0d9a8;
  --maxw:1140px;
  --sans:"Inter",system-ui,sans-serif;
  --disp:"Archivo","Inter",sans-serif;
  --mono:"IBM Plex Mono",monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--paper);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.disp{font-family:var(--disp)}
img{max-width:100%}

/* eyebrow */
.eyebrow{font-family:var(--mono);font-size:11.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--teal)}
.eyebrow.amber{color:var(--amber)}
.on-dark .eyebrow{color:var(--teal-2)}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(20,23,30,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--line-d)}
.nav-in{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:15px 24px;max-width:var(--maxw);margin:0 auto}
.logo{font-family:var(--disp);font-weight:700;font-size:21px;color:var(--paper);letter-spacing:-.01em;display:flex;align-items:center;gap:9px}
.logo .dot{width:8px;height:8px;border-radius:50%;background:var(--amber);display:inline-block;margin-top:8px}
.logo small{font-family:var(--mono);font-weight:400;font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted-d)}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links a{color:#C3CAD6;font-size:14px;transition:color .15s}
.nav-links a:hover,.nav-links a.on{color:var(--paper)}
.nav-right{display:flex;align-items:center;gap:14px}
.langtog{font-family:var(--mono);font-size:12px;color:var(--muted-d);border:1px solid var(--line-d);border-radius:20px;padding:5px 11px;cursor:pointer;user-select:none}
.langtog b{color:var(--teal-2)}
.navburger{display:none;background:none;border:0;color:var(--paper);font-size:22px;cursor:pointer}
@media(max-width:800px){
  .nav-links{display:none;position:absolute;top:100%;left:0;right:0;background:var(--ink);flex-direction:column;gap:0;padding:8px 0;border-bottom:1px solid var(--line-d)}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 24px}
  .navburger{display:block}
}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--sans);font-weight:600;font-size:14.5px;
  padding:12px 20px;border-radius:9px;border:0;cursor:pointer;transition:transform .15s,background .15s;white-space:nowrap}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--teal);color:#fff}
.btn-primary:hover{background:var(--teal-2)}
.btn-ghost{background:transparent;color:var(--paper);border:1px solid rgba(255,255,255,.28)}
.btn-ghost:hover{background:rgba(255,255,255,.08)}
.btn-dark{background:var(--ink);color:var(--paper)}
.btn-dark:hover{background:var(--graphite-2)}
.btn-amber{background:var(--amber);color:#3a2a08}

/* ---------- sections / bands ---------- */
.band{padding:88px 0}
.band.dark{background:var(--ink);color:var(--paper)}
.band.graphite{background:var(--graphite);color:var(--paper)}
.band.bone{background:var(--bone)}
.band.paper{background:var(--paper)}
.band.tight{padding:60px 0}
.on-dark{color:var(--paper)}
.lead{font-size:19px;color:var(--muted);max-width:60ch}
.dark .lead,.graphite .lead{color:#C3CAD6}
h1,h2,h3{font-family:var(--disp);font-weight:700;letter-spacing:-.02em;line-height:1.08}
h1{font-size:clamp(34px,5.4vw,58px)}
h2.sec{font-size:clamp(27px,3.6vw,40px);margin:0}
h3{font-size:20px;letter-spacing:-.01em}
.section-head{max-width:62ch;margin-bottom:44px}
.section-head .eyebrow{margin-bottom:14px;display:block}
.section-head p{margin-top:16px;font-size:17px;color:var(--muted)}
.dark .section-head p,.graphite .section-head p{color:#C3CAD6}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--ink);color:var(--paper);padding:96px 0 88px}
.hero-bg{position:absolute;inset:0;opacity:.5;pointer-events:none}
.hero-in{position:relative;z-index:2;max-width:22ch}
.hero h1{max-width:17ch}
.hero h1 .hl{color:var(--teal-2)}
.hero p.sub{margin-top:22px;font-size:19px;color:#C7CDD8;max-width:52ch}
.hero .cta-row{display:flex;gap:12px;margin-top:34px;flex-wrap:wrap}
.hero .microcopy{margin-top:16px;font-family:var(--mono);font-size:12px;color:var(--muted-d);letter-spacing:.02em}

/* stat strip */
.stats{display:flex;flex-wrap:wrap;gap:34px;margin-top:52px;padding-top:30px;border-top:1px solid var(--line-d)}
.stats .s .v{font-family:var(--mono);font-size:26px;font-weight:600;color:var(--paper)}
.stats .s .v b{color:var(--amber);font-weight:600}
.stats .s .k{font-family:var(--mono);font-size:10.5px;letter-spacing:.13em;text-transform:uppercase;color:var(--muted-d);margin-top:6px}

/* ---------- cards / services ---------- */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media(max-width:860px){.grid3,.grid2{grid-template-columns:1fr}}
.card{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:26px;transition:transform .2s,box-shadow .2s}
.bone .card{background:var(--white)}
.card:hover{transform:translateY(-3px);box-shadow:0 14px 30px -20px rgba(20,23,30,.4)}
.card .num{font-family:var(--mono);font-size:12px;color:var(--teal);letter-spacing:.1em}
.card h3{margin:12px 0 8px}
.card p{color:var(--muted);font-size:14.5px}
.card .price{margin-top:14px;font-family:var(--mono);font-size:13px;color:var(--ink);background:var(--bone);border-radius:8px;padding:6px 11px;display:inline-block}
.card ul{list-style:none;margin:14px 0 0}
.card ul li{position:relative;padding:5px 0 5px 22px;font-size:14px;color:var(--muted)}
.card ul li::before{content:"→";position:absolute;left:0;color:var(--teal);font-family:var(--mono)}
.card.feature{border-color:var(--teal);box-shadow:0 0 0 1px var(--teal)}
.tag-badge{position:absolute;top:-11px;left:24px;font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;background:var(--teal);color:#fff;padding:3px 10px;border-radius:20px}
.card{position:relative}

/* problem list */
.probs{display:grid;grid-template-columns:1fr 1fr;gap:14px 40px;margin-top:8px}
@media(max-width:700px){.probs{grid-template-columns:1fr}}
.prob{display:flex;gap:13px;padding:15px 0;border-top:1px solid var(--line-d)}
.prob .x{color:var(--amber);font-family:var(--mono);font-weight:600;flex:0 0 auto}
.prob div{color:#C7CDD8;font-size:15.5px}

/* steps */
.steps{counter-reset:st;display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:8px}
@media(max-width:860px){.steps{grid-template-columns:1fr 1fr}}
@media(max-width:500px){.steps{grid-template-columns:1fr}}
.step{padding-top:20px;border-top:2px solid var(--teal)}
.step .n{counter-increment:st;font-family:var(--mono);font-size:12px;color:var(--teal)}
.step .n::before{content:"0" counter(st)" / "}
.step h3{font-size:17px;margin:8px 0 6px}
.step p{font-size:14px;color:var(--muted)}

/* cta band */
.cta-band{background:var(--graphite);color:var(--paper);border-radius:0}
.cta-flex{display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap}
.cta-flex h2{max-width:16ch}

/* contact form */
.form{display:grid;grid-template-columns:1fr 1fr;gap:14px;max-width:640px}
.form .full{grid-column:1/-1}
.form label{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted-d);margin-bottom:6px}
.form input,.form select,.form textarea{width:100%;background:var(--graphite-2);border:1px solid var(--line-d);color:var(--paper);
  border-radius:9px;padding:12px 13px;font-family:var(--sans);font-size:15px}
.form input:focus,.form textarea:focus,.form select:focus{outline:2px solid var(--teal);outline-offset:1px}
.form textarea{min-height:110px;resize:vertical}
.form .ok{display:none;color:var(--teal-2);font-family:var(--mono);font-size:13px;grid-column:1/-1}
@media(max-width:600px){.form{grid-template-columns:1fr}}

/* ---------- footer ---------- */
footer{background:var(--ink);color:var(--muted-d);padding:52px 0 40px;border-top:1px solid var(--line-d)}
.foot-in{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
.foot-brand .logo{margin-bottom:10px}
.foot-brand p{font-size:13.5px;max-width:32ch;color:var(--muted-d)}
.foot-col h4{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--teal-2);margin-bottom:12px}
.foot-col a{display:block;color:#AEB6C4;font-size:14px;padding:4px 0}
.foot-col a:hover{color:var(--paper)}
.foot-base{border-top:1px solid var(--line-d);margin-top:34px;padding-top:20px;font-family:var(--mono);font-size:11px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* ---------- blog ---------- */
.post-list{display:grid;gap:2px}
.post-item{display:block;padding:26px 0;border-top:1px solid var(--line);transition:padding .15s}
.post-item:hover{padding-left:8px}
.post-item .meta{font-family:var(--mono);font-size:11.5px;letter-spacing:.05em;color:var(--teal);text-transform:uppercase}
.post-item h3{font-size:23px;margin:9px 0 8px;color:var(--ink)}
.post-item p{color:var(--muted);max-width:70ch}
.post-item .read{font-family:var(--mono);font-size:12px;color:var(--muted);margin-top:10px}

article.post{max-width:720px;margin:0 auto;padding:0 24px}
article.post .meta{font-family:var(--mono);font-size:12px;letter-spacing:.05em;color:var(--teal);text-transform:uppercase;margin-bottom:16px}
article.post h1{font-size:clamp(30px,4.4vw,44px);line-height:1.12;margin-bottom:18px}
article.post .standfirst{font-size:20px;color:var(--muted);margin-bottom:34px;line-height:1.5}
article.post h2{font-family:var(--disp);font-size:26px;margin:38px 0 12px;letter-spacing:-.01em}
article.post h3{font-size:19px;margin:26px 0 8px}
article.post p{font-size:17px;color:#2A2E38;margin:16px 0;line-height:1.7}
article.post ul,article.post ol{margin:16px 0 16px 22px}
article.post li{font-size:17px;color:#2A2E38;margin:9px 0;line-height:1.6}
article.post strong{color:var(--ink)}
article.post blockquote{border-left:3px solid var(--amber);padding:6px 0 6px 20px;margin:24px 0;font-family:var(--disp);font-size:21px;color:var(--ink);line-height:1.35}
article.post .kicker{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--amber);margin:38px 0 4px}
article.post code{font-family:var(--mono);font-size:15px;background:var(--bone);padding:2px 6px;border-radius:5px}
.post-cta{background:var(--bone);border-radius:14px;padding:26px;margin:44px 0 0;text-align:center}
.post-cta p{font-size:16px;color:var(--muted);margin-bottom:14px}

.hidden{display:none}