/* ELM ANALYTICS — design tokens & components
   Fonts: Space Grotesk (headings, geometric sans) + Inter (body, neutral sans) */

:root{
  --navy-950:#061729;
  --navy-900:#08203c;
  --navy-850:#0b2b4d;
  --navy-700:#0e3a66;
  --navy-600:#14548f;
  --sky-500:#1a8fc9;
  --teal-ink:#0e7d94;   /* AA-safe accent for small text on light backgrounds (4.79:1 on white) */
  --cyan-500:#17c8e0;
  --cyan-300:#6fdbe9;
  --cyan-200:#8fd8e8;
  --cyan-100:#cfe0ec;
  --cyan-50:#a9cfe4;
  --ink:#182c48;
  --muted:#54688a;      /* 5.64:1 on white */
  --paper:#ffffff;
  --surface:#f2f6f9;
  --border:#dde4ec;

  --font-head:'Space Grotesk', system-ui, sans-serif;
  --font-body:'Inter', system-ui, sans-serif;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--surface);
  color:var(--ink);
  font-family:var(--font-body);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,.eyebrow,.wordmark-l,.wordmark-s,.stepnum,.wnum,.wwd-num{font-family:var(--font-head);}
h1,h2,h3{text-wrap:balance; margin:0; color:var(--navy-900); font-weight:700;}
p{margin:0; color:var(--muted); line-height:1.65;}
a{color:inherit;}
img,svg{max-width:100%;}
ul{margin:0; padding:0; list-style:none;}
button, input, select, textarea{font-family:inherit;}

.container{max-width:1180px; margin:0 auto; padding:0 20px;}
@media (min-width:480px){ .container{padding:0 28px;} }
@media (min-width:1024px){ .container{padding:0 32px;} }

section{padding:64px 0;}
@media (min-width:768px){ section{padding:88px 0;} }
@media (min-width:1024px){ section{padding:104px 0;} }

@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; scroll-behavior:auto !important;}
}

.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-link{position:absolute; left:12px; top:-50px; background:var(--navy-950); color:#fff; padding:10px 16px; z-index:100; transition:top .15s ease;}
.skip-link:focus{top:12px;}

/* ---------- eyebrow / buttons ---------- */
.eyebrow{display:inline-flex; align-items:center; gap:14px; font-size:13px; font-weight:600; letter-spacing:.14em; text-transform:uppercase;}
.eyebrow::before{content:""; width:32px; height:2px; background:var(--cyan-500); display:block; flex:none;}
.eyebrow.on-dark{color:var(--cyan-200);}
.eyebrow.on-light{color:var(--teal-ink);}

.btn{display:inline-flex; align-items:center; justify-content:center; gap:8px; padding:14px 26px; border-radius:2px; font-family:var(--font-body); font-weight:700; font-size:15px; text-decoration:none; border:1.5px solid transparent; cursor:pointer; transition:background .15s ease, color .15s ease, border-color .15s ease;}
.btn-primary{background:var(--cyan-500); color:var(--navy-950);}
.btn-primary:hover, .btn-primary:focus-visible{background:var(--cyan-300);}
.btn-ghost-dark{border-color:rgba(207,224,236,.35); color:var(--cyan-100);}
.btn-ghost-dark:hover, .btn-ghost-dark:focus-visible{border-color:var(--cyan-500); background:rgba(23,200,224,.08);}
.btn-ghost-light{border-color:var(--border); color:var(--navy-900);}
.btn-ghost-light:hover, .btn-ghost-light:focus-visible{border-color:var(--navy-600); background:#fff;}
:focus-visible{outline:2px solid var(--sky-500); outline-offset:2px;}

/* ---------- scroll reveal ---------- */
.reveal{opacity:0; transform:translateY(18px); transition:opacity .6s ease, transform .6s ease;}
.reveal.in{opacity:1; transform:none;}
.reveal-group.in > *{transition-delay:calc(var(--i,0) * 90ms);}

/* ---------- logo pixel-mark ---------- */
.px1{fill:#0e3a66} .px2{fill:#14548f} .px3{fill:#1a8fc9} .px4{fill:#08203c} .px5{fill:#17c8e0}
.pxd1{fill:#cfe0ec} .pxd2{fill:#a9cfe4} .pxd3{fill:#6fdbe9} .pxd4{fill:#ffffff} .pxd5{fill:#17c8e0}

/* ---------- header ---------- */
header{position:sticky; top:0; z-index:40; background:rgba(255,255,255,.94); backdrop-filter:blur(8px); border-bottom:1px solid var(--border);}
.nav-row{display:flex; align-items:center; justify-content:space-between; height:76px; gap:20px;}
@media (min-width:768px){ .nav-row{height:84px;} }
.brand{display:flex; align-items:center; gap:12px; text-decoration:none; flex:none;}
.brand svg{width:30px; height:30px;}
.wordmark-l{font-size:17px; font-weight:700; letter-spacing:.02em; color:var(--navy-900); line-height:1; display:block;}
.wordmark-s{font-size:9px; font-weight:600; letter-spacing:.2em; color:var(--navy-600); line-height:1; margin-top:3px; display:block;}
nav.links{display:none; align-items:center; gap:30px;}
@media (min-width:1024px){ nav.links{display:flex;} }
nav.links a{font-size:14.5px; font-weight:600; color:var(--ink); text-decoration:none; white-space:nowrap; padding:6px 0; border-bottom:2px solid transparent;}
nav.links a:hover{color:var(--sky-500);}
nav.links a.active{color:var(--navy-900); border-bottom-color:var(--cyan-500);}
.nav-right{display:flex; align-items:center; gap:18px;}
@media (min-width:480px){ .nav-right{gap:24px;} }
.lang-switch{display:flex; align-items:center; gap:6px; font-size:13px; font-weight:700;}
.lang-switch a{padding:3px 4px; color:var(--muted); text-decoration:none;}
.lang-switch a.active{color:var(--navy-900);}
.lang-switch a:hover{color:var(--sky-500);}
.lang-switch span{color:var(--border);}
.nav-toggle{display:inline-flex; flex-direction:column; gap:4px; background:none; border:0; padding:6px; cursor:pointer;}
@media (min-width:1024px){ .nav-toggle{display:none;} }
.nav-toggle span{width:20px; height:2px; background:var(--navy-900); display:block;}
.mobile-nav{display:none; flex-direction:column; gap:2px; background:#fff; border-top:1px solid var(--border); padding:8px 20px 16px;}
.mobile-nav.open{display:flex;}
.mobile-nav a{padding:12px 0; font-size:15px; font-weight:600; color:var(--ink); text-decoration:none; border-bottom:1px solid var(--border);}
.mobile-nav a.active{color:var(--sky-500);}
@media (min-width:1024px){ .mobile-nav{display:none !important;} }

/* ---------- hero ---------- */
.hero{position:relative; overflow:hidden; background:linear-gradient(135deg,var(--navy-850) 0%,var(--navy-900) 52%,var(--navy-950) 100%); padding:64px 0 56px; border-bottom:6px solid var(--cyan-500);}
@media (min-width:768px){ .hero{padding:96px 0 80px;} }
.hero::before{content:""; position:absolute; inset:0; background-image:linear-gradient(rgba(207,224,236,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(207,224,236,.05) 1px,transparent 1px); background-size:36px 36px; mask-image:linear-gradient(180deg,#000 0%,transparent 78%); -webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 78%);}
.hero-inner{position:relative; max-width:760px;}
.hero h1{font-size:clamp(30px,6vw,54px); font-weight:700; color:#fff; line-height:1.1; margin-top:18px;}
.hero p.lede{font-size:17px; color:var(--cyan-100); max-width:56ch; margin-top:20px;}
@media (min-width:768px){ .hero p.lede{font-size:18px;} }
.hero-tagline{margin-top:16px; font-family:var(--font-head); font-weight:600; font-size:14.5px; letter-spacing:.05em; color:var(--cyan-300);}
@media (min-width:768px){ .hero-tagline{font-size:15.5px;} }
.hero-ctas{display:flex; gap:14px; margin-top:32px; flex-wrap:wrap;}

.dashboard{position:relative; margin-top:56px;}
@media (min-width:768px){ .dashboard{margin-top:72px;} }
.dashboard svg{width:100%; height:auto; display:block;}
.flow-dash{stroke-dasharray:6 10; animation:flow 2.4s linear infinite;}
@keyframes flow{to{stroke-dashoffset:-64;}}
.dash-node{opacity:0; transform:translateY(8px); transition:opacity .5s ease, transform .5s ease;}
.dashboard.in .dash-node{opacity:1; transform:none;}
.dashboard.in .dash-node:nth-child(1){transition-delay:.05s;}
.dashboard.in .dash-node:nth-child(2){transition-delay:.2s;}
.dashboard.in .dash-node:nth-child(3){transition-delay:.35s;}
.dashboard.in .dash-node:nth-child(4){transition-delay:.5s;}
.dashboard.in .dash-node:nth-child(5){transition-delay:.65s;}
.bar-grow{transform-origin:bottom; animation:grow 1.6s ease-out both;}
@keyframes grow{from{transform:scaleY(0);} to{transform:scaleY(1);}}
.spark-draw{stroke-dasharray:220; stroke-dashoffset:220; animation:draw 1.8s ease-out .3s forwards;}
@keyframes draw{to{stroke-dashoffset:0;}}

/* ---------- section heads ---------- */
.section-head{max-width:660px; margin-bottom:44px;}
@media (min-width:768px){ .section-head{margin-bottom:52px;} }
.section-head h2{font-size:clamp(24px,4vw,36px); margin-top:14px;}
.section-head p{margin-top:12px; font-size:15.5px;}
@media (min-width:768px){ .section-head p{font-size:16px;} }

/* ---------- what we do ---------- */
.wwd-intro{margin-bottom:8px;}
.wwd-grid{display:grid; grid-template-columns:1fr; gap:1px; background:var(--border); border:1px solid var(--border); margin-top:8px;}
@media (min-width:600px){ .wwd-grid{grid-template-columns:1fr 1fr;} }
@media (min-width:1024px){ .wwd-grid{grid-template-columns:repeat(4,1fr);} }
.wwd-card{background:var(--paper); padding:28px 24px; display:flex; flex-direction:column;}
.wwd-num{font-weight:700; font-size:12.5px; color:var(--teal-ink); letter-spacing:.1em; margin-bottom:14px;}
.wwd-card h3{font-size:18px; font-weight:700;}
.wwd-card p{margin-top:10px; font-size:14.5px;}
.tag-row{display:flex; flex-wrap:wrap; gap:8px; margin-top:18px;}
.tag{font-size:12px; font-weight:600; color:var(--teal-ink); background:var(--surface); border:1px solid var(--border); padding:5px 10px; border-radius:20px;}

/* ---------- AI band (nested inside #what-we-do) ---------- */
.ai-band{background:var(--navy-950); color:#fff; margin-top:56px; padding:56px 0;}
@media (min-width:768px){ .ai-band{margin-top:72px; padding:72px 0;} }
.ai-band .section-head h2{color:#fff;}
.ai-band .section-head p{color:var(--cyan-100);}
.ai-tags{display:flex; flex-wrap:wrap; gap:10px; margin-top:8px;}
.ai-tag{font-size:13px; font-weight:600; color:var(--cyan-100); background:rgba(207,224,236,.08); border:1px solid rgba(207,224,236,.2); padding:8px 16px; border-radius:20px;}
.ai-line{margin-top:30px; font-family:var(--font-head); font-weight:700; font-size:16px; color:var(--cyan-300);}

/* ---------- ELM Method diagram ---------- */
.method-diagram{position:relative; margin-top:16px;}
.method-row{display:grid; grid-template-columns:repeat(2,1fr); gap:32px 20px; position:relative;}
@media (min-width:768px){ .method-row{grid-template-columns:repeat(4,1fr); gap:16px;} }
.method-line{position:absolute; top:34px; left:6%; right:6%; height:2px; background:var(--border); display:none;}
@media (min-width:768px){ .method-line{display:block;} }
.method-line .flow{stroke-dasharray:6 10; animation:flow 2.2s linear infinite;}
.mnode{position:relative; text-align:left; opacity:0; transform:translateY(14px); transition:opacity .5s ease, transform .5s ease;}
.method-row.in .mnode{opacity:1; transform:none;}
.method-row.in .mnode:nth-child(1){transition-delay:0s;}
.method-row.in .mnode:nth-child(2){transition-delay:.15s;}
.method-row.in .mnode:nth-child(3){transition-delay:.3s;}
.method-row.in .mnode:nth-child(4){transition-delay:.45s;}
.mnode-icon{width:56px; height:56px; border-radius:50%; background:var(--paper); border:1.5px solid var(--sky-500); display:flex; align-items:center; justify-content:center; margin-bottom:16px; position:relative; z-index:1;}
.mnode-icon svg{width:26px; height:26px; stroke:var(--navy-700); fill:none; stroke-width:1.8;}
.mnode h3{font-size:16.5px; font-weight:700;}
.mnode p{margin-top:6px; font-size:14px; max-width:26ch;}

/* ---------- examples ---------- */
.ex-grid{display:grid; grid-template-columns:1fr; gap:26px; margin-top:8px;}
@media (min-width:600px){ .ex-grid{grid-template-columns:1fr 1fr;} }
@media (min-width:1024px){ .ex-grid{grid-template-columns:repeat(4,1fr);} }
.ex-card{border-left:3px solid var(--cyan-500); padding:2px 0 2px 18px;}
.ex-card h3{font-size:15px; font-weight:700; text-transform:uppercase; letter-spacing:.06em; color:var(--navy-700);}
.ex-card ul{margin-top:14px; display:flex; flex-direction:column; gap:9px;}
.ex-card li{font-size:14.5px; color:var(--muted);}

/* ---------- localization (nested inside #examples) ---------- */
.localization{background:var(--navy-950); color:#fff; margin-top:56px; padding:56px 0;}
@media (min-width:768px){ .localization{margin-top:72px; padding:72px 0;} }
.localization .section-head h2{color:#fff;}
.localization .section-head p{color:var(--cyan-100);}
.loc-grid{display:grid; grid-template-columns:1fr; gap:1px; background:rgba(207,224,236,.14); border:1px solid rgba(207,224,236,.14); margin-bottom:52px;}
@media (min-width:600px){ .loc-grid{grid-template-columns:1fr 1fr;} }
@media (min-width:1024px){ .loc-grid{grid-template-columns:repeat(3,1fr);} }
.loc-item{background:var(--navy-900); padding:24px 22px;}
.loc-item:last-child{grid-column:1/-1;}
.loc-item h4{font-family:var(--font-head); font-size:15px; font-weight:700; color:#fff;}
.loc-item p{margin-top:8px; font-size:13.5px; color:var(--cyan-100);}

.demo{background:rgba(255,255,255,.04); border:1px solid rgba(207,224,236,.18); padding:28px 22px; max-width:820px; margin:0 auto 48px;}
@media (min-width:768px){ .demo{padding:40px;} }
.demo-badge{display:inline-block; font-size:11px; font-weight:700; letter-spacing:.12em; text-transform:uppercase; color:var(--navy-950); background:var(--cyan-500); padding:5px 12px; border-radius:20px; margin-bottom:22px;}
.term-row{display:grid; grid-template-columns:1fr; gap:12px;}
@media (min-width:600px){ .term-row{grid-template-columns:repeat(3,1fr);} }
.term-col{border:1px solid rgba(207,224,236,.2); padding:14px; text-align:center;}
.term-col .lang-tag{font-size:11px; font-weight:700; letter-spacing:.14em; color:var(--cyan-300);}
.term-col p{margin-top:8px; color:#fff; font-weight:600; font-size:15px;}
.term-col.flagged{border-color:rgba(207,224,236,.4); border-style:dashed;}
.term-col.flagged span.flag{display:block; margin-top:8px; font-size:11.5px; color:var(--cyan-200); font-weight:600;}
.analysis-line{text-align:center; margin:22px 0; font-family:var(--font-head); font-weight:700; font-size:14.5px; color:var(--cyan-300);}
.term-row.recommended .term-col{border-color:var(--cyan-500); border-style:solid;}
.good-line{text-align:center; margin-top:20px; font-size:14px; color:var(--cyan-100);}

.workflow-chain{display:flex; align-items:center; justify-content:center; flex-wrap:wrap; gap:0; margin-bottom:48px;}
.wf-chip{background:var(--navy-900); border:1px solid rgba(207,224,236,.25); padding:10px 18px; font-size:13px; font-weight:700; letter-spacing:.03em; color:#fff; border-radius:24px; opacity:0; transform:translateY(10px); transition:opacity .45s ease, transform .45s ease;}
.workflow-chain.in .wf-chip{opacity:1; transform:none;}
.workflow-chain.in .wf-chip:nth-child(1){transition-delay:0s;}
.workflow-chain.in .wf-chip:nth-child(3){transition-delay:.12s;}
.workflow-chain.in .wf-chip:nth-child(5){transition-delay:.24s;}
.workflow-chain.in .wf-chip:nth-child(7){transition-delay:.36s;}
.workflow-chain.in .wf-chip:nth-child(9){transition-delay:.48s;}
.wf-arrow{color:var(--cyan-500); font-size:17px; margin:0 8px; font-weight:700;}

.loc-cta{text-align:center;}
.loc-cta .btn{white-space:normal; max-width:560px; text-align:center; line-height:1.4;}

/* ---------- about block (Approach + Why Elm + About together) ---------- */
.approach-block{max-width:680px; margin-bottom:48px;}
.approach-block h2{font-size:clamp(22px,3.4vw,32px); margin-top:14px;}
.approach-block p{margin-top:12px; font-size:15.5px;}

.why-grid{display:grid; grid-template-columns:1fr; gap:20px; margin-bottom:64px;}
@media (min-width:600px){ .why-grid{grid-template-columns:1fr 1fr;} }
@media (min-width:1024px){ .why-grid{grid-template-columns:repeat(4,1fr);} }
.why-card{background:var(--paper); border:1px solid var(--border); padding:24px 22px;}
.why-card .wnum{font-weight:700; font-size:11.5px; letter-spacing:.14em; color:var(--teal-ink);}
.why-card h3{margin-top:10px; font-size:16.5px; font-weight:700;}
.why-card p{margin-top:8px; font-size:14px;}

.about-grid{display:grid; grid-template-columns:1fr; gap:36px; align-items:center; padding-top:48px; border-top:1px solid var(--border);}
@media (min-width:900px){ .about-grid{grid-template-columns:1fr 1fr; gap:56px;} }
.about-copy h2{font-size:clamp(22px,3.4vw,32px); margin-top:14px;}
.about-copy p{font-size:15.5px; margin-top:14px;}
.chain{display:flex; align-items:center; flex-wrap:wrap; gap:10px; margin-top:24px;}
.chain-step{font-family:var(--font-head); font-size:12.5px; font-weight:700; letter-spacing:.07em; color:var(--navy-700); background:var(--surface); border:1px solid var(--border); padding:8px 14px; border-radius:20px;}
.chain-arrow{color:var(--cyan-500); font-weight:700;}
.about-visual{background:var(--navy-950); aspect-ratio:1/1; display:flex; align-items:center; justify-content:center; max-width:280px; margin:0 auto;}
.about-visual svg{width:56%; height:56%;}

/* ---------- contact ---------- */
.contact-wrap{display:grid; grid-template-columns:1fr; gap:1px; background:var(--border); border:1px solid var(--border);}
@media (min-width:900px){ .contact-wrap{grid-template-columns:1fr 1.1fr;} }
.contact-copy{background:var(--navy-950); color:#fff; padding:36px 24px;}
@media (min-width:768px){ .contact-copy{padding:52px 44px;} }
.contact-copy h2{color:#fff; font-size:clamp(22px,3.4vw,32px); margin-top:14px;}
.contact-copy p{color:var(--cyan-100); margin-top:14px; font-size:15px; max-width:42ch;}
.contact-copy ul{margin-top:26px; display:flex; flex-direction:column; gap:14px;}
.contact-copy li{font-size:14.5px; color:var(--cyan-100); display:flex; gap:12px; align-items:flex-start;}
.contact-copy li svg{width:18px; height:18px; fill:var(--cyan-300); flex:none; margin-top:2px;}
.contact-form{background:var(--paper); padding:36px 24px;}
@media (min-width:768px){ .contact-form{padding:52px 44px;} }
.field{margin-bottom:18px;}
.field label{display:block; font-size:13px; font-weight:700; color:var(--navy-700); margin-bottom:7px;}
.field .req{color:var(--sky-500);}
.field input, .field textarea, .field select{width:100%; padding:12px 14px; border:1px solid var(--border); background:#fff; font-family:var(--font-body); font-size:14.5px; color:var(--ink);}
.field input:focus-visible, .field textarea:focus-visible, .field select:focus-visible{outline:2px solid var(--sky-500); outline-offset:1px;}
.field input.invalid, .field textarea.invalid{border-color:#b3261e;}
.field-error{display:none; margin-top:6px; font-size:12.5px; color:#b3261e;}
.field-error.show{display:block;}
.field-row{display:grid; grid-template-columns:1fr; gap:16px;}
@media (min-width:480px){ .field-row{grid-template-columns:1fr 1fr;} }
.form-note{margin-top:10px; font-size:12.5px; color:var(--muted);}
.form-status{margin-top:14px; font-size:14px; padding:12px 14px; display:none;}
.form-status.show{display:block;}
.form-status.success{background:#e7f7f4; color:#0e6b4f; border:1px solid #b8e6da;}
.form-status.error{background:#fdecea; color:#8a231d; border:1px solid #f3c2bd;}
.hp-field{position:absolute; left:-9999px; top:-9999px; width:1px; height:1px; overflow:hidden;}

/* ---------- footer ---------- */
footer{background:var(--navy-950); color:var(--cyan-100); padding:44px 0 28px;}
@media (min-width:768px){ footer{padding:52px 0 30px;} }
.footer-top{display:flex; flex-direction:column; gap:28px; padding-bottom:28px; border-bottom:1px solid rgba(207,224,236,.14);}
@media (min-width:768px){ .footer-top{flex-direction:row; justify-content:space-between; align-items:flex-start; gap:36px;} }
.footer-brand{display:flex; align-items:center; gap:14px;}
.footer-brand svg{width:26px; height:26px;}
.footer-tagline{margin-top:4px; font-family:var(--font-head); font-size:12px; font-weight:600; color:var(--cyan-300); letter-spacing:.03em; line-height:1.5;}
footer nav.links{display:flex; gap:22px; flex-wrap:wrap;}
footer nav.links a{font-size:13.5px; font-weight:600; color:var(--cyan-100); text-decoration:none;}
footer nav.links a:hover{color:var(--cyan-500);}
.footer-bottom{display:flex; flex-direction:column; gap:12px; padding-top:20px; font-size:12.5px; color:#7f95b3;}
@media (min-width:768px){ .footer-bottom{flex-direction:row; justify-content:space-between; align-items:center;} }
.footer-lang{display:flex; gap:6px; font-size:13px; font-weight:700;}
.footer-lang a{color:#7f95b3; text-decoration:none;}
.footer-lang a.active{color:var(--cyan-300);}

@media (min-width:1440px){
  .container{max-width:1280px;}
}