/* ============================================================
   Navacore — "Structural Specification"
   Concrete + graphite + one structural-orange signal
   ============================================================ */

:root {
  --paper:  #E6E7E3;   /* raw concrete, cool-neutral */
  --panel:  #F2F3EF;   /* lighter spec panel */
  --ink:    #14202A;   /* deep blue-graphite — primary */
  --steel:  #566472;   /* muted steel — secondary text */
  --rule:   #CBCDC6;   /* structural rule */
  --rule-2: #AEB2AA;   /* stronger rule */
  --signal: #C6F24E;   /* electric lime — the one accent */
  --on-signal: #14202A; /* text placed on a lime fill */

  --dark:      #14202A; /* dark section bg */
  --dark-panel:#1B2A36;
  --dark-rule: rgba(255,255,255,.14);
  --dark-text: #E9ECEA;
  --dark-mute: #93A0AC;

  --disp: 'Archivo', system-ui, sans-serif;
  --sans: 'IBM Plex Sans', system-ui, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, Menlo, monospace;

  --maxw: 1180px;
  --ease: cubic-bezier(.2,.7,.3,1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.55;
  font-weight: 450;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: var(--disp); font-weight: 800; letter-spacing: -0.02em; line-height: 1.0; }
.mono { font-family: var(--mono); }
::selection { background: var(--signal); color: var(--on-signal); }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }
.wrap-narrow { max-width: 760px; }

/* ---------- masthead ---------- */
.masthead { position: sticky; top: 0; z-index: 50; background: var(--paper); border-bottom: 1px solid var(--rule); }
.masthead-row { display: flex; align-items: center; gap: 32px; height: 66px; }
.wordmark { font-family: var(--disp); font-weight: 800; font-size: 21px; letter-spacing: -0.03em; }
.wordmark sup { font-size: 9px; font-weight: 600; top: -1em; color: var(--signal); }
.nav { display: flex; gap: 28px; margin-right: auto; margin-left: 12px; }
.nav a { font-family: var(--mono); font-size: 13px; color: var(--steel); transition: color .2s; }
.nav a:hover { color: var(--ink); }
.link-cta { font-family: var(--mono); font-size: 13px; font-weight: 500; border-bottom: 2px solid var(--signal); padding-bottom: 3px; }
.link-cta:hover { color: var(--ink); border-bottom-width: 3px; }
.burger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.burger span { width: 22px; height: 2px; background: var(--ink); }
.drawer { display: none; flex-direction: column; background: var(--paper); border-bottom: 1px solid var(--rule); padding: 8px 32px 20px; }
.drawer a { font-family: var(--mono); font-size: 15px; padding: 12px 0; border-bottom: 1px solid var(--rule); color: var(--steel); }
.drawer.open { display: flex; }

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; gap: 9px; font-family: var(--mono); font-size: 14px; font-weight: 500; padding: 13px 20px; transition: all .2s var(--ease); border: 1px solid transparent; }
.btn-solid { background: var(--ink); color: var(--paper); }
.btn-solid:hover { background: var(--signal); color: var(--on-signal); }
.btn-line { border-color: var(--rule-2); color: var(--ink); }
.btn-line:hover { border-color: var(--ink); }
.btn-lg { padding: 17px 26px; font-size: 15px; }

/* ---------- hero ---------- */
.hero { padding: 84px 32px 72px; }
.eyebrow { font-size: 15px; color: var(--steel); margin-bottom: 40px; }
.eyebrow .mono { color: var(--ink); font-weight: 500; font-size: 13px; letter-spacing: .01em; }
.hero-body { display: grid; grid-template-columns: 1fr auto; gap: 48px; align-items: end; }
.hero-title { font-size: clamp(46px, 8.5vw, 104px); font-weight: 900; letter-spacing: -0.045em; line-height: 0.92; }
.hero-title span { display: block; }
.hero-sub { max-width: 620px; font-size: clamp(17px, 2vw, 20px); color: var(--steel); margin-top: 40px; }
.hero-actions { display: flex; gap: 14px; margin-top: 32px; flex-wrap: wrap; }

/* centered hero variant */
.hero-center { text-align: center; padding-top: 104px; padding-bottom: 92px; }
.hero-center .eyebrow { margin-bottom: 34px; }
.hero-center .hero-title { letter-spacing: -0.045em; }
.hero-center .hero-sub { margin-left: auto; margin-right: auto; }
.hero-center .hero-actions { justify-content: center; }

/* ---------- studio strip ---------- */
.strip { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.strip-cell { padding: 28px 24px 26px; border-right: 1px solid var(--rule); }
.strip-cell:last-child { border-right: 0; }
.strip-num { display: block; font-family: var(--disp); font-weight: 800; font-size: clamp(30px, 3.6vw, 44px); letter-spacing: -0.03em; }
.strip-label { display: block; font-family: var(--mono); font-size: 12px; color: var(--steel); margin-top: 8px; }

/* ---------- sections ---------- */
.section { padding: 108px 0; border-bottom: 1px solid var(--rule); }
.section-dark { background: var(--dark); color: var(--dark-text); border-bottom-color: var(--dark-rule); }
.sec-head { max-width: 660px; margin-bottom: 60px; }
.sec-ref { font-family: var(--mono); font-size: 12px; text-transform: uppercase; letter-spacing: .14em; color: var(--ink); display: inline-flex; align-items: center; gap: 9px; margin-bottom: 20px; }
.sec-ref::before { content: ""; width: 8px; height: 8px; background: var(--signal); flex: none; }
.section-dark .sec-ref { color: var(--dark-text); }
.sec-head h2 { font-size: clamp(30px, 4.6vw, 54px); font-weight: 800; letter-spacing: -0.035em; }
.sec-head p { color: var(--steel); font-size: 18px; margin-top: 18px; max-width: 540px; }
.section-dark .sec-head p { color: var(--dark-mute); }

/* ---------- capabilities ---------- */
.grid-cap { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--rule-2); border-left: 1px solid var(--rule-2); }
.cap { padding: 34px 30px 40px; border-right: 1px solid var(--rule-2); border-bottom: 1px solid var(--rule-2); position: relative; transition: background .2s; }
.cap:hover { background: var(--panel); }
.cap-code { font-size: 12px; text-transform: uppercase; letter-spacing: .1em; color: var(--steel); }
.cap-code::before { content: "▪ "; color: var(--signal); }
.section-dark .cap-code, .section-dark .cap-code::before { color: var(--signal); }
.cap h3 { font-size: 23px; font-weight: 700; margin: 16px 0 10px; letter-spacing: -0.02em; }
.cap p { color: var(--steel); font-size: 15px; }

/* ---------- work ---------- */
.work { border-top: 1px solid var(--dark-rule); }
.work-row { display: grid; grid-template-columns: 1fr 340px; gap: 56px; align-items: center; padding: 40px 0; border-bottom: 1px solid var(--dark-rule); transition: padding-left .25s var(--ease); }
.work-row:hover { padding-left: 10px; }
.work-copy .cap-code { color: var(--signal); }
.work-copy h3 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; margin: 14px 0 12px; letter-spacing: -0.03em; }
.work-copy p { color: var(--dark-mute); font-size: 16px; max-width: 520px; }

/* ---------- architecture schematics ---------- */
.schematic { width: 100%; max-width: 340px; color: var(--steel); justify-self: end; }
.section-dark .schematic { color: var(--dark-mute); }
.svc-aside .schematic { margin-top: 26px; justify-self: start; }
.sch { width: 100%; height: auto; overflow: visible; display: block; }
.sch .node { fill: none; stroke: currentColor; stroke-width: 1.4; }
.sch .node-a { stroke: var(--signal); }
.sch .edge { stroke: currentColor; stroke-width: 1.4; opacity: .8; }
.sch .arrow { fill: currentColor; opacity: .8; }
.sch .dot { fill: var(--signal); }
.sch .lbl { fill: currentColor; font-family: var(--mono); font-size: 11px; letter-spacing: .01em; }

/* ---------- principles ---------- */
.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 2px solid var(--ink); }
.principle { padding: 32px 30px 8px; border-right: 1px solid var(--rule); }
.principle:last-child { border-right: 0; }
.principle h3 { font-size: 21px; font-weight: 700; margin-bottom: 12px; letter-spacing: -0.02em; }
.principle p { color: var(--steel); font-size: 15px; }

/* ---------- process ---------- */
.process { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.step { padding: 28px 26px 8px 0; border-top: 2px solid var(--signal); margin-right: 24px; }
.step:last-child { margin-right: 0; }
.step-n { font-size: 13px; color: var(--dark-mute); }
.step h3 { font-size: 24px; font-weight: 800; margin: 14px 0 12px; }
.step p { color: var(--dark-mute); font-size: 15px; }

/* ---------- stack ---------- */
.stack { border-top: 1px solid var(--rule-2); }
.stack-row { display: grid; grid-template-columns: 200px 1fr; gap: 24px; padding: 22px 0; border-bottom: 1px solid var(--rule); align-items: baseline; }
.stack-key { font-size: 13px; text-transform: uppercase; letter-spacing: .08em; color: var(--steel); }
.stack-val { font-size: 18px; color: var(--ink); }

/* ---------- faq ---------- */
.faq { border-top: 1px solid var(--dark-rule); }
.faq-item { border-bottom: 1px solid var(--dark-rule); }
.faq-item summary { list-style: none; cursor: pointer; padding: 24px 0; font-family: var(--disp); font-weight: 700; font-size: clamp(18px,2.2vw,22px); letter-spacing: -0.02em; display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-family: var(--mono); font-weight: 400; font-size: 24px; color: var(--signal); transition: transform .25s; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { color: var(--dark-mute); font-size: 16px; padding-bottom: 24px; max-width: 640px; }

/* ---------- closer ---------- */
.closer { padding: 128px 0; text-align: center; }
.closer .sec-ref { justify-content: center; }
.closer h2 { font-size: clamp(34px, 6vw, 68px); font-weight: 900; letter-spacing: -0.04em; margin: 10px 0 22px; }
.closer p { color: var(--steel); font-size: 19px; max-width: 540px; margin: 0 auto 36px; }

/* ---------- footer ---------- */
.footer { background: var(--ink); color: var(--dark-text); padding: 68px 0 30px; }
.footer-top { display: grid; grid-template-columns: 1.5fr 2fr; gap: 40px; padding-bottom: 48px; border-bottom: 1px solid var(--dark-rule); }
.footer-brand .wordmark sup { color: var(--signal); }
.footer-brand p { color: var(--dark-mute); font-size: 15px; margin-top: 14px; max-width: 300px; }
.footer-addr { font-family: var(--mono); font-style: normal; font-size: 12px; line-height: 1.8; color: var(--dark-mute); margin-top: 20px; }
.footer-nav { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.footer-nav > div { display: flex; flex-direction: column; gap: 12px; }
.footer-nav .mono { font-size: 11px; text-transform: uppercase; letter-spacing: .1em; color: var(--dark-mute); margin-bottom: 4px; }
.footer-nav a { font-size: 15px; color: var(--dark-text); transition: color .2s; }
.footer-nav a:hover { color: var(--signal); }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-top: 26px; font-size: 12px; color: var(--dark-mute); }

/* ============ SUBPAGES ============ */

/* page hero */
.page-hero { padding: 76px 0 60px; border-bottom: 1px solid var(--rule); }
.page-hero h1 { font-size: clamp(40px, 7vw, 82px); font-weight: 900; letter-spacing: -0.045em; margin-top: 8px; }
.page-hero .lead { max-width: 640px; font-size: clamp(17px, 2vw, 21px); color: var(--steel); margin-top: 26px; }
.page-hero .hero-actions { margin-top: 34px; }

/* active nav state */
.nav a[aria-current="page"] { color: var(--ink); }
.nav a[aria-current="page"]::after { content: ""; display: block; height: 2px; background: var(--signal); margin-top: 3px; }

/* detailed service blocks */
.svc-block { display: grid; grid-template-columns: 340px 1fr; gap: 48px; padding: 64px 0; border-bottom: 1px solid var(--rule); scroll-margin-top: 90px; }
.svc-block:last-child { border-bottom: 0; }
.svc-aside .cap-code { font-size: 13px; }
.svc-aside h2 { font-size: clamp(26px, 3vw, 38px); font-weight: 800; letter-spacing: -0.03em; margin: 12px 0 18px; }
.svc-aside p { color: var(--steel); font-size: 16px; }
.svc-list { list-style: none; border-top: 1px solid var(--rule-2); }
.svc-list li { display: flex; gap: 18px; align-items: baseline; padding: 18px 0; border-bottom: 1px solid var(--rule); }
.svc-list .n { font-family: var(--mono); font-size: 12px; color: var(--steel); flex: none; width: 28px; }
.svc-list h3 { font-family: var(--sans); font-weight: 600; font-size: 17px; letter-spacing: 0; }
.svc-list p { color: var(--steel); font-size: 15px; margin-top: 2px; }

/* cases (light) grid */
.case-list { border-top: 1px solid var(--rule-2); }
.case-row { display: grid; grid-template-columns: 1fr 340px; gap: 56px; align-items: center; padding: 40px 0; border-bottom: 1px solid var(--rule); transition: padding-left .25s var(--ease); }
.case-row:hover { padding-left: 8px; }
.case-copy h3 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; margin: 14px 0 12px; letter-spacing: -0.03em; }
.case-copy p { color: var(--steel); font-size: 16px; max-width: 520px; }

/* about: values reuse .principles; regions */
.regions { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--rule-2); border-left: 1px solid var(--rule-2); }
.region { padding: 22px 20px; border-right: 1px solid var(--rule-2); border-bottom: 1px solid var(--rule-2); font-family: var(--mono); font-size: 14px; }
.region span { display: block; font-size: 11px; color: var(--signal); margin-bottom: 6px; letter-spacing: .08em; }

/* careers / jobs */
.perks { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 2px solid var(--ink); margin-bottom: 8px; }
.perk { padding: 28px 26px 10px; border-right: 1px solid var(--rule); }
.perk:last-child { border-right: 0; }
.perk h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.perk p { color: var(--steel); font-size: 15px; }
.jobs { border-top: 1px solid var(--rule-2); }
.job { display: grid; grid-template-columns: 1fr auto auto; gap: 24px; align-items: center; padding: 24px 0; border-bottom: 1px solid var(--rule); transition: padding-left .2s var(--ease); }
.job:hover { padding-left: 8px; }
.job h3 { font-family: var(--sans); font-weight: 600; font-size: 19px; letter-spacing: 0; }
.job .job-meta { font-family: var(--mono); font-size: 12px; color: var(--steel); }
.job .job-go { font-family: var(--mono); font-size: 13px; color: var(--signal); }

/* contact */
.contact-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 56px; align-items: start; }
.form { display: grid; gap: 20px; }
.field { display: grid; gap: 8px; }
.field label { font-family: var(--mono); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--steel); }
.field input, .field textarea, .field select {
  font-family: var(--sans); font-size: 16px; color: var(--ink); background: var(--panel);
  border: 1px solid var(--rule-2); padding: 13px 14px; width: 100%; border-radius: 0;
}
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--signal); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-note { font-family: var(--mono); font-size: 12px; color: var(--steel); }
.form-ok { display: none; font-family: var(--mono); font-size: 14px; color: var(--ink); border: 1px solid var(--signal); border-left-width: 4px; padding: 14px 16px; }
.form-ok.show { display: block; }
.contact-aside .c-line { padding: 16px 0; border-bottom: 1px solid var(--rule); }
.contact-aside .c-line--first { border-top: 1px solid var(--rule-2); }
.contact-aside .c-line span { display: block; font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--steel); margin-bottom: 4px; }
.contact-aside .c-line a, .contact-aside .c-line strong { font-size: 17px; font-weight: 600; }
.contact-aside .c-addr { font-family: var(--mono); font-style: normal; font-size: 13px; line-height: 1.8; color: var(--ink); }

/* legal prose */
.prose { max-width: 720px; }
.prose .updated { font-family: var(--mono); font-size: 12px; color: var(--steel); margin-bottom: 40px; }
.prose h2 { font-size: 24px; font-weight: 800; letter-spacing: -0.02em; margin: 44px 0 12px; }
.prose h2:first-of-type { margin-top: 0; }
.prose p, .prose li { color: #33414d; font-size: 16px; line-height: 1.7; }
.prose p { margin-bottom: 14px; }
.prose ul { padding-left: 20px; margin-bottom: 14px; }
.prose li { margin-bottom: 6px; }
.prose a { color: var(--ink); text-decoration: underline; text-decoration-color: var(--signal); text-decoration-thickness: 2px; text-underline-offset: 2px; }

/* ---------- motion ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
/* hero orchestrated load-in */
.load { opacity: 0; transform: translateY(18px); animation: rise .8s var(--ease) forwards; }
.l1 { animation-delay: .05s; } .l2 { animation-delay: .13s; } .l3 { animation-delay: .21s; }
.l4 { animation-delay: .34s; } .l5 { animation-delay: .30s; } .l6 { animation-delay: .40s; }
@keyframes rise { to { opacity: 1; transform: none; } }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .nav, .link-cta { display: none; }
  .burger { display: flex; }
  .hero-body { grid-template-columns: 1fr; gap: 36px; align-items: start; }
  .hero-plate { min-width: 0; max-width: 340px; }
  .grid-cap { grid-template-columns: 1fr; border-left: 0; }
  .principles { grid-template-columns: 1fr; border-top: 2px solid var(--ink); }
  .principle { border-right: 0; border-bottom: 1px solid var(--rule); padding-bottom: 26px; }
  .process { grid-template-columns: repeat(2, 1fr); gap: 28px 0; }
  .footer-top { grid-template-columns: 1fr; }
  .section { padding: 76px 0; }
}
@media (max-width: 560px) {
  .wrap, .hero { padding-left: 20px; padding-right: 20px; }
  .strip { grid-template-columns: 1fr 1fr; }
  .strip-cell:nth-child(2) { border-right: 0; }
  .strip-cell:nth-child(-n+2) { border-bottom: 1px solid var(--rule); }
  .stack-row { grid-template-columns: 1fr; gap: 6px; }
  .process { grid-template-columns: 1fr; }
  .step { margin-right: 0; }
}
@media (max-width: 900px) {
  .svc-block { grid-template-columns: 1fr; gap: 28px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .case-row, .work-row { grid-template-columns: 1fr; gap: 24px; }
  .schematic { justify-self: start; max-width: 360px; }
  .regions { grid-template-columns: repeat(2, 1fr); }
  .perks { grid-template-columns: 1fr; }
  .perk { border-right: 0; border-bottom: 1px solid var(--rule); padding-bottom: 22px; }
}
@media (max-width: 560px) {
  .form-row { grid-template-columns: 1fr; }
  .job { grid-template-columns: 1fr; gap: 6px; }
  .job .job-go { display: none; }
  .regions { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  .reveal, .load { opacity: 1; transform: none; animation: none; transition: none; }
}