/* ═══════════════════════════════════════════════════════════════════════
   ViyoraTech.com — Concept C "Engineered" design system
   Ported from docs/redesign/prototype/index.html (design-direction.md / ADR-015)
   Design-review Must/Should-fixes applied:
     · content visible without JS (.js opt-in reveal)
     · amber-only footer mark (blue gradient removed)
     · --dim raised to meet WCAG AA on small text
     · :focus-visible rings on all interactive elements
   ═══════════════════════════════════════════════════════════════════════ */

:root{
  --graphite:#0B0E13; --surface:#0D1119; --border:#1A2030;
  --ink:#E6E9EF; --muted:#8892A3; --dim:#7C8698;   /* dim raised from #5F6A7D → AA on small text */
  --amber:#E9B24B; --amber-h:#F2C168; --green:#8EE4A0;
  --maxw:1180px; --read:680px;
  --sans:'Inter',system-ui,sans-serif; --display:'Space Grotesk',var(--sans);
  --mono:'JetBrains Mono',ui-monospace,monospace;
  --sp:clamp(4rem,8vw,7rem);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--graphite);line-height:1.65;-webkit-font-smoothing:antialiased;
  background-image:radial-gradient(rgba(233,178,75,.09) 1px,transparent 1px);background-size:22px 22px;background-attachment:fixed}
h1,h2,h3,h4{font-family:var(--display);line-height:1.08;letter-spacing:-.02em;color:var(--ink)}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 clamp(1.3rem,4vw,2.6rem)}
.ey{font-family:var(--mono);font-weight:500;font-size:.74rem;letter-spacing:.14em;color:var(--amber);text-transform:none}

/* Accessible focus ring (Should-fix #6) */
:where(a,button,input,textarea,select,.fchip):focus-visible{
  outline:2px solid var(--amber);outline-offset:3px;border-radius:3px}

.btn{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--display);font-weight:600;font-size:.92rem;padding:.8rem 1.4rem;border-radius:4px;transition:.2s;cursor:pointer;border:0}
.btn-p{background:var(--amber);color:var(--graphite)}.btn-p:hover{background:var(--amber-h)}
.btn-g{color:var(--ink);border:1px solid var(--border);background:transparent}.btn-g:hover{border-color:var(--amber);color:var(--amber)}

/* Skip link (a11y) */
.skip{position:absolute;left:-999px;top:0;z-index:100;background:var(--amber);color:var(--graphite);padding:.6rem 1rem;font-family:var(--display);font-weight:600}
.skip:focus{left:.5rem;top:.5rem}

/* Header */
header{position:sticky;top:0;z-index:30;background:rgba(11,14,19,.82);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;gap:2rem;padding:1rem 0}
.brand{display:flex;align-items:center;gap:.6rem;font-family:var(--display);font-weight:700;font-size:1.12rem}
.brand img{height:48px;width:auto;display:block}
.mark{width:26px;height:26px;display:grid;place-items:center;background:var(--amber);border-radius:5px;font-weight:700;font-size:.9rem;color:var(--graphite);font-family:var(--display)}
nav.links{margin-left:auto;display:flex;gap:1.4rem;font-size:.9rem;font-weight:500;color:var(--muted)}
nav.links a{padding:.2rem 0}
nav.links a:hover,nav.links a[aria-current="page"]{color:var(--ink)}
nav.links a[aria-current="page"]{color:var(--amber)}
.nav-cta{margin-left:1rem}
.burger{display:none;margin-left:auto;background:none;border:0;color:var(--ink);font-size:1.4rem;cursor:pointer;line-height:1}

/* Mobile menu drawer */
.mobile-menu{display:none;border-bottom:1px solid var(--border);background:var(--surface)}
.mobile-menu.open{display:block}
.mobile-menu a{display:block;padding:.9rem clamp(1.3rem,4vw,2.6rem);color:var(--muted);border-bottom:1px solid var(--border);font-weight:500}
.mobile-menu a:hover{color:var(--ink)}

/* Hero */
.hero{padding:clamp(4.5rem,9vw,7rem) 0 var(--sp);position:relative}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:3rem;align-items:center}
.hero h1{font-size:clamp(2.5rem,5.6vw,4.4rem);font-weight:700;margin:1.1rem 0}
.hero h1 span{color:var(--amber)}
.hero .sub{color:var(--muted);font-size:clamp(1.02rem,1.5vw,1.2rem);max-width:36ch}
.hero-cta{display:flex;gap:1rem;flex-wrap:wrap;margin-top:2rem}
.readout{font-family:var(--mono);font-size:.8rem;line-height:2;color:var(--dim);background:var(--surface);border:1px solid var(--border);border-left:2px solid var(--amber);border-radius:6px;padding:1.1rem 1.3rem}
.readout .c{color:var(--amber)}.readout b{color:var(--green);font-weight:500}
.cursor{display:inline-block;width:8px;height:1em;background:var(--amber);vertical-align:-2px;animation:blink 1.1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

/* Section scaffold */
section{padding:var(--sp) 0}
/* `.wrap` (a class) otherwise beats the element rule above and zeroes vertical padding,
   collapsing the gaps between stacked sections. Restore real vertical rhythm. */
section.wrap{padding-top:clamp(1.9rem,3.6vw,3rem);padding-bottom:clamp(1.9rem,3.6vw,3rem)}
section.wrap.page-head{padding-top:clamp(3.5rem,7vw,5.5rem);padding-bottom:0}
.sec-head{max-width:54ch}
.sec-head h2{font-size:clamp(1.7rem,3.2vw,2.5rem);margin-top:.6rem}
.sec-head p{color:var(--muted);margin-top:.6rem}
.page-head{padding:clamp(3.5rem,7vw,5.5rem) 0 0}
.page-head h1{font-size:clamp(2.1rem,4.4vw,3.2rem);margin:.8rem 0 .4rem}
.page-head p{color:var(--muted);max-width:60ch}

/* Grid-cell rows */
.cells{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:10px;overflow:hidden;margin-top:2.4rem}
.cell{background:var(--surface);padding:1.8rem 1.6rem;transition:.2s}
.cell:hover{background:#10151f}
.cell .k{font-family:var(--mono);font-size:.72rem;color:var(--amber)}
.cell h3{font-size:1.15rem;margin:.7rem 0 .5rem}
.cell p{color:var(--muted);font-size:.93rem}

/* How we work */
.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:10px;overflow:hidden;margin-top:2.4rem}
.step{background:var(--surface);padding:1.5rem 1.1rem}
.step .s{font-family:var(--mono);font-size:.72rem;color:var(--amber)}
.step h4{font-size:1rem;margin-top:.5rem}

/* Featured / cards */
.feature{display:grid;grid-template-columns:1.3fr 1fr;gap:0;border:1px solid var(--border);border-radius:12px;overflow:hidden;margin-top:2.4rem}
.feature .txt{background:var(--surface);padding:2.2rem}
.feature h3{font-size:1.5rem;margin:.7rem 0}
.feature p{color:var(--muted)}
.feature .thumb{background:var(--graphite);position:relative;min-height:220px;
  background-image:radial-gradient(rgba(233,178,75,.14) 1px,transparent 1px);background-size:16px 16px}
.feature .thumb::after{content:'</>';position:absolute;inset:0;display:grid;place-items:center;font-family:var(--mono);font-size:2rem;color:var(--dim)}
.feature a{color:var(--amber);font-weight:600;font-family:var(--display)}

/* Products */
.chips{display:flex;gap:.5rem;margin-top:1.6rem;flex-wrap:wrap}
.fchip{font-family:var(--mono);font-size:.72rem;padding:.35rem .7rem;border:1px solid var(--border);border-radius:4px;color:var(--muted);cursor:pointer;background:transparent}
.fchip.on{border-color:var(--amber);color:var(--amber)}
.prods{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:10px;overflow:hidden;margin-top:1.2rem}
.prod{background:var(--surface);padding:1.5rem;display:flex;flex-direction:column;gap:.5rem;transition:.2s}
.prod:hover{background:#10151f}
.prod .tag{font-family:var(--mono);font-size:.68rem;color:var(--dim)}
.prod .soon{color:var(--amber)}
.prod h3{font-size:1.05rem}.prod p{color:var(--muted);font-size:.88rem;flex:1}
.prod a{font-family:var(--display);color:var(--amber);font-weight:600;font-size:.88rem}

/* Content detail (products, case studies, insights) */
.article-meta{font-family:var(--mono);font-size:.74rem;color:var(--dim);display:flex;gap:1rem;flex-wrap:wrap}
.article-meta .cat{color:var(--amber)}
.media-hero{border:1px solid var(--border);border-radius:12px;overflow:hidden;margin-top:.4rem}
.media-hero img{display:block;width:100%;height:auto}
.media-hero.placeholder{min-height:clamp(180px,28vw,300px);background:var(--graphite);
  background-image:radial-gradient(rgba(233,178,75,.14) 1px,transparent 1px);background-size:16px 16px;position:relative}
.media-hero.placeholder::after{content:'</>';position:absolute;inset:0;display:grid;place-items:center;font-family:var(--mono);font-size:2rem;color:var(--dim)}

/* Article / reading column */
.article{max-width:var(--read);margin:2.4rem auto 0}
.article .meta{font-family:var(--mono);font-size:.74rem;color:var(--dim);display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:1.4rem}
.article .meta .cat{color:var(--amber)}
.prose{color:var(--muted);font-size:1.02rem;line-height:1.75}
.prose h2,.prose h3{color:var(--ink);margin:2rem 0 .8rem}
.prose p{margin:1rem 0}
.prose a{color:var(--amber)}
.prose code{font-family:var(--mono);font-size:.9em;background:var(--surface);border:1px solid var(--border);border-radius:4px;padding:.1rem .4rem}
.prose pre{background:var(--surface);border:1px solid var(--border);border-left:2px solid var(--amber);border-radius:6px;padding:1.1rem 1.3rem;overflow:auto;margin:1.4rem 0}
.prose pre code{border:0;padding:0;background:none}
.prose ul,.prose ol{margin:1rem 0 1rem 1.4rem}
.prose li{margin:.4rem 0}

/* Contact form */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem;margin-top:2.4rem;max-width:720px}
.field{display:flex;flex-direction:column;gap:.4rem}
.field.full{grid-column:1/-1}
.field label{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;color:var(--muted)}
.field input,.field textarea{font-family:var(--sans);font-size:.95rem;color:var(--ink);background:var(--surface);border:1px solid var(--border);border-radius:6px;padding:.75rem .9rem}
.field input:focus,.field textarea:focus{border-color:var(--amber);outline:none}
.field textarea{min-height:150px;resize:vertical}

/* Alerts */
.alert{border:1px solid var(--border);border-left:3px solid var(--amber);border-radius:8px;background:var(--surface);padding:1rem 1.2rem;margin-top:1.6rem;font-size:.92rem}
.alert-ok{border-left-color:var(--green)}
.alert ul{margin:.3rem 0 0 1.1rem}

/* CTA band + footer */
.band{border:1px solid var(--border);border-left:3px solid var(--amber);border-radius:12px;background:var(--surface);padding:clamp(2.4rem,5vw,3.6rem);margin:var(--sp) 0;text-align:center}
.band h2{font-size:clamp(1.6rem,3vw,2.2rem)}
.band p{color:var(--muted);margin:.8rem auto 1.6rem;max-width:46ch}
footer{border-top:1px solid var(--border);padding:3.4rem 0 2rem;color:var(--muted)}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:2rem}
.foot-brand img{height:44px;width:auto}
footer h4{font-family:var(--mono);color:var(--ink);font-size:.74rem;letter-spacing:.1em;margin-bottom:.9rem}
footer a{display:block;color:var(--muted);font-size:.9rem;padding:.24rem 0}
footer a:hover{color:var(--amber)}
.foot-bottom{border-top:1px solid var(--border);margin-top:2.5rem;padding-top:1.4rem;display:flex;justify-content:space-between;font-family:var(--mono);font-size:.76rem;color:var(--dim);flex-wrap:wrap;gap:.5rem}
/* keep "privacy · terms" inline (footer a is display:block by default) */
.foot-bottom a{display:inline;padding:0}

/* Reveal — MUST-FIX #1: content visible by default; hidden only when JS is on. */
.reveal{opacity:1;transform:none;transition:.6s cubic-bezier(.2,.7,.2,1)}
.js .reveal{opacity:0;transform:translateY(16px)}
.js .reveal.in{opacity:1;transform:none}

@media(max-width:900px){
  .hero-grid,.feature,.foot-grid,.form-grid{grid-template-columns:1fr}
  .cells,.prods{grid-template-columns:1fr 1fr}.flow{grid-template-columns:1fr 1fr}
  nav.links,.nav-cta{display:none}.burger{display:block}
}
@media(max-width:560px){.cells,.prods,.flow{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){
  .reveal,.js .reveal{opacity:1;transform:none;transition:none}
  .cursor{animation:none}html{scroll-behavior:auto}
}