/* =========================================================================
   RHODIUM GLOBAL INNOVATIONS — stylesheet
   Design language: technical blueprint / engineering schematic.
   Dark navy + signal blue + copper, dotted grid, corner-bracket framing,
   mono-set spec labels. See DESIGN-NOTES.md for the full rationale.
   ========================================================================= */

:root{
  --ink:        #0A1628;
  --ink-2:      #0F2138;
  --ink-3:      #16294A;
  --paper:      #F5F7FA;
  --paper-2:    #FFFFFF;
  --steel:      #5B6B7D;
  --text:       #101826;
  --line:       #E1E6EC;
  --line-dark:  rgba(255,255,255,.14);
  --signal:     #2E6FF2;
  --signal-dim: #1B4FC7;
  --signal-soft:#EAF0FE;
  --copper:     #C97A3D;
  --copper-soft:#FBF0E5;
  --live:       #22C55E;

  --font-display: 'Space Grotesk', 'Segoe UI', system-ui, sans-serif;
  --font-body:    'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-mono:    'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

  --max: 1180px;
  --radius: 6px;
  --shadow-1: 0 1px 2px rgba(10,22,40,.06), 0 8px 24px -12px rgba(10,22,40,.18);
}

/* ---------- reset ---------- */
*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  line-height:1.55;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ font-family:var(--font-display); margin:0; line-height:1.12; letter-spacing:-0.01em; }
p{ margin:0; }
button{ font-family:inherit; }
:focus-visible{ outline:2px solid var(--signal); outline-offset:2px; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}

/* ---------- layout helpers ---------- */
.wrap{ max-width:var(--max); margin:0 auto; padding:0 24px; }
.section{ padding:88px 0; }
.section-tight{ padding:56px 0; }
@media (max-width:768px){
  .section{ padding:56px 0; }
  .section-tight{ padding:40px 0; }
}
.dark{ background:var(--ink); color:#EAF0FA; }
.dark .steel-text{ color:#9FB0C6; }
.grid{ display:grid; gap:28px; }
.g-2{ grid-template-columns:repeat(2,1fr); }
.g-3{ grid-template-columns:repeat(3,1fr); }
.g-4{ grid-template-columns:repeat(4,1fr); }
@media (max-width:900px){ .g-2,.g-3,.g-4{ grid-template-columns:1fr; } }
.g-4.services-grid{ grid-template-columns:repeat(5,1fr); }
@media (max-width:1100px){ .g-4.services-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:560px){ .g-4.services-grid{ grid-template-columns:1fr; } }

/* ---------- eyebrow / spec label (structural device) ---------- */
.eyebrow{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--signal);
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:14px;
}
.eyebrow::before{ content:''; width:16px; height:1px; background:var(--signal); }
.dark .eyebrow{ color:#7FA5FF; }
.dark .eyebrow::before{ background:#7FA5FF; }

/* ---------- blueprint grid background ---------- */
.blueprint{
  position:relative;
  background-color:var(--ink);
  background-image:
    linear-gradient(rgba(127,165,255,.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(127,165,255,.14) 1px, transparent 1px);
  background-size:36px 36px;
  background-position:center top;
}
.blueprint::after{
  content:'';
  position:absolute; inset:0;
  background:radial-gradient(ellipse at 50% 0%, rgba(46,111,242,.20), transparent 60%);
  pointer-events:none;
}

/* corner brackets — evoke a drafted technical drawing frame */
.frame{ position:relative; }
.frame::before,.frame::after,
.frame .br-tr,.frame .br-bl{
  content:''; position:absolute; width:22px; height:22px;
  border-color:rgba(127,165,255,.55); border-style:solid; border-width:0;
}
.frame::before{ top:0; left:0; border-top-width:1px; border-left-width:1px; }
.frame::after{ bottom:0; right:0; border-bottom-width:1px; border-right-width:1px; }

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--font-body); font-weight:600; font-size:15px;
  padding:13px 22px; border-radius:var(--radius);
  border:1px solid transparent; cursor:pointer; transition:transform .15s ease, background .15s ease, border-color .15s ease;
  white-space:nowrap;
}
.btn:hover{ transform:translateY(-1px); }
.btn-primary{ background:linear-gradient(135deg, #3B7BFF, var(--signal-dim)); color:#fff; box-shadow:0 6px 18px -6px rgba(46,111,242,.55); }
.btn-primary:hover{ background:linear-gradient(135deg, #2E6FF2, #1746A8); box-shadow:0 8px 22px -6px rgba(46,111,242,.7); }
.btn-ghost{ background:transparent; color:#EAF0FA; border-color:var(--line-dark); }
.btn-ghost:hover{ border-color:#7FA5FF; }
.btn-outline{ background:transparent; color:var(--ink); border-color:var(--line); }
.btn-outline:hover{ border-color:var(--signal); color:var(--signal); }
.btn-block{ width:100%; justify-content:center; }
.btn-sm{ padding:9px 16px; font-size:14px; }

/* ---------- header / nav ---------- */
.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(10,22,40,.92); backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line-dark);
}
.nav{ display:flex; align-items:center; justify-content:space-between; padding:14px 24px; max-width:var(--max); margin:0 auto; gap:24px; }
.brand{ display:flex; align-items:center; gap:10px; color:#fff; }
.brand-icon{ height:32px; width:auto; }
.brand-word{ height:19px; width:auto; margin-top:2px; }
.nav-links{ display:flex; align-items:center; gap:28px; }
.nav-links a{ color:#C7D3E6; font-size:14.5px; font-weight:500; padding:6px 0; border-bottom:1px solid transparent; transition:color .15s, border-color .15s; }
.nav-links a:hover, .nav-links a.active{ color:#fff; border-color:var(--signal); }
.nav-right{ display:flex; align-items:center; gap:14px; }
.nav-phone{ display:flex; align-items:center; gap:7px; color:#C7D3E6; font-family:var(--font-mono); font-size:13.5px; }
.nav-toggle{ display:none; background:none; border:1px solid var(--line-dark); color:#fff; border-radius:4px; padding:8px 10px; }
@media (max-width:960px){
  .nav-links{ display:none; }
  .nav-phone{ display:none; }
  .nav-toggle{ display:inline-flex; }
}
.mobile-menu{ display:none; flex-direction:column; gap:2px; padding:8px 24px 18px; border-top:1px solid var(--line-dark); }
.mobile-menu.open{ display:flex; }
.mobile-menu a{ color:#DCE5F3; padding:12px 4px; border-bottom:1px solid var(--line-dark); font-size:15px; }
.mobile-menu .btn{ margin-top:12px; }

/* ---------- hero ---------- */
.hero{ padding:96px 0 64px; }
.hero-grid{ display:grid; grid-template-columns:1.05fr .95fr; gap:56px; align-items:center; }
@media (max-width:960px){ .hero-grid{ grid-template-columns:1fr; gap:40px; } .hero{ padding:56px 0 40px; } }
.hero h1{
  font-size:clamp(34px,4.4vw,54px);
  background:linear-gradient(180deg, #FFFFFF 45%, #C7D9FF 120%);
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.hero .lede{ margin-top:20px; font-size:18px; color:#B9C6DC; max-width:52ch; }
.hero-actions{ margin-top:34px; display:flex; gap:14px; flex-wrap:wrap; }
.hero-trust{ margin-top:40px; display:flex; gap:28px; flex-wrap:wrap; }
.hero-trust div{ font-family:var(--font-mono); font-size:12px; color:#8FA3C2; letter-spacing:.04em; }
.hero-trust strong{ display:block; font-family:var(--font-display); font-size:22px; color:#fff; font-weight:600; }

/* schematic network diagram (signature element) */
.schematic{ position:relative; aspect-ratio:1/1; max-width:480px; margin:0 auto; }
.schematic svg{ width:100%; height:100%; overflow:visible; }
.schem-line{ stroke:#4C7CF0; stroke-width:1.4; fill:none; stroke-dasharray:6 5; opacity:.75; animation:dash 22s linear infinite; }
.schem-line.slow{ animation-duration:34s; }
@keyframes dash{ to{ stroke-dashoffset:-400; } }
.schem-node{ fill:var(--ink); stroke:#7FA5FF; stroke-width:1.4; }
.schem-node.core{ fill:var(--signal); stroke:#9FBBFF; }
.schem-label{ font-family:var(--font-mono); font-size:9px; fill:#8FA3C2; letter-spacing:.05em; }
.schem-pulse{ fill:#7FA5FF; opacity:0; animation:pulse 3.4s ease-in-out infinite; }
@keyframes pulse{ 0%{opacity:0; r:2;} 50%{opacity:.9;} 100%{opacity:0; r:5;} }

/* ---------- section headers ---------- */
.section-head{ max-width:640px; margin-bottom:44px; }
.section-head h2{ font-size:clamp(26px,3vw,36px); }
.section-head p{ margin-top:14px; font-size:16.5px; color:var(--steel); }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }

/* ---------- service cards ---------- */
.service-card{
  background:var(--paper-2); border:1px solid var(--line); border-radius:var(--radius);
  padding:26px 22px; display:flex; flex-direction:column; gap:14px;
  box-shadow:0 1px 2px rgba(10,22,40,.04);
  transition:border-color .15s ease, transform .15s ease, box-shadow .15s ease;
}
.service-card:hover{ border-color:var(--signal); transform:translateY(-4px); box-shadow:0 16px 32px -16px rgba(10,22,40,.22); }
.service-card .code{ font-family:var(--font-mono); font-size:11px; color:var(--steel); letter-spacing:.06em; }
.service-card h3{ font-size:18px; }
.service-card p{ color:var(--steel); font-size:14.5px; }
.service-card .go{ margin-top:auto; font-size:13.5px; font-weight:600; color:var(--signal); display:inline-flex; align-items:center; gap:6px; }

/* colour-tinted icon badge — used on service cards and the service-page hero */
.icon-badge{
  width:48px; height:48px; border-radius:12px;
  background:linear-gradient(150deg, var(--signal-soft), #F4F8FF);
  border:1px solid rgba(46,111,242,.16);
  color:var(--signal);
  display:flex; align-items:center; justify-content:center;
}
.icon-badge svg{ width:24px; height:24px; }
.icon-badge-lg{
  width:56px; height:56px; border-radius:12px;
  background:rgba(46,111,242,.16); border:1px solid rgba(127,165,255,.35);
  color:#7FA5FF; display:flex; align-items:center; justify-content:center;
}
.icon-badge-lg svg{ width:28px; height:28px; }

/* ---------- process steps ---------- */
.process-list{ display:grid; grid-template-columns:repeat(4,1fr); gap:0; border-top:1px solid var(--line); }
@media (max-width:900px){ .process-list{ grid-template-columns:1fr; } }
.process-step{ padding:26px 22px 26px 0; border-right:1px solid var(--line); }
.process-list .process-step:last-child{ border-right:none; }
@media (max-width:900px){ .process-step{ border-right:none; border-bottom:1px solid var(--line); padding:22px 0; } .process-list .process-step:last-child{ border-bottom:none; } }
.process-step .num{ font-family:var(--font-mono); color:var(--copper); font-size:13px; letter-spacing:.05em; }
.process-step h4{ margin-top:10px; font-size:17px; }
.process-step p{ margin-top:8px; color:var(--steel); font-size:14.5px; }

/* ---------- feature list ---------- */
.check-list{ display:flex; flex-direction:column; gap:13px; }
.check-list li{ display:flex; gap:12px; align-items:flex-start; font-size:15.5px; }
.check-list svg{ flex:none; width:18px; height:18px; color:var(--signal); margin-top:2px; }

/* ---------- stat / band ---------- */
.stat-band{ border-top:1px solid var(--line-dark); border-bottom:1px solid var(--line-dark); }
.stat-band .grid{ padding:44px 0; }
.stat{ text-align:left; }
.stat strong{ display:block; font-family:var(--font-display); font-size:clamp(30px,3.4vw,44px); color:#fff; }
.stat span{ font-family:var(--font-mono); font-size:12px; color:#8FA3C2; letter-spacing:.04em; }

/* ---------- sector / audience cards ---------- */
.sector-card{ border:1px solid var(--line); border-radius:var(--radius); padding:28px; background:var(--paper-2); box-shadow:0 1px 2px rgba(10,22,40,.04); transition:border-color .15s ease, transform .15s ease, box-shadow .15s ease; }
a.sector-card:hover{ border-color:var(--signal); transform:translateY(-3px); box-shadow:var(--shadow-1); }
.sector-card .tag{ font-family:var(--font-mono); font-size:11px; color:var(--copper); letter-spacing:.06em; }
.sector-card h3{ margin-top:10px; font-size:19px; }
.sector-card p{ margin-top:10px; color:var(--steel); font-size:15px; }

/* ---------- CTA band ---------- */
.cta-band{ background:var(--ink); border-radius:12px; padding:56px 44px; display:flex; align-items:center; justify-content:space-between; gap:32px; flex-wrap:wrap; }
.cta-band h3{ color:#fff; font-size:28px; max-width:30ch; }
.cta-band p{ color:#AEBEDA; margin-top:10px; }

/* ---------- forms ---------- */
.field{ margin-bottom:20px; }
.field label{ display:block; font-size:13.5px; font-weight:600; margin-bottom:7px; }
.field .hint{ font-size:12.5px; color:var(--steel); margin-top:6px; }
input,select,textarea{
  width:100%; padding:12px 14px; border:1px solid var(--line); border-radius:var(--radius);
  font-family:var(--font-body); font-size:15px; background:#fff; color:var(--text);
  transition:border-color .15s ease;
}
input:focus,select:focus,textarea:focus{ border-color:var(--signal); }
textarea{ resize:vertical; min-height:120px; }
fieldset{ border:1px solid var(--line); border-radius:var(--radius); padding:16px 18px; margin:0 0 20px; }
legend{ font-family:var(--font-mono); font-size:12px; color:var(--steel); padding:0 6px; letter-spacing:.05em; text-transform:uppercase; }
.checkbox-row{ display:flex; align-items:center; gap:10px; }
.checkbox-row input{ width:auto; }
.form-card{ background:#fff; border:1px solid var(--line); border-radius:12px; padding:34px; box-shadow:var(--shadow-1); }
.form-error{ background:#FEEFEF; border:1px solid #F3B9B9; color:#9A1F1F; padding:12px 16px; border-radius:6px; font-size:14px; margin-bottom:22px; }
.form-success{ background:#EAFBF1; border:1px solid #B7ECCB; color:#136B3B; padding:12px 16px; border-radius:6px; font-size:14px; margin-bottom:22px; }

/* ---------- FAQ ---------- */
.faq-item{ border-bottom:1px solid var(--line); padding:20px 0; }
.faq-item summary{ cursor:pointer; font-weight:600; font-size:16px; list-style:none; display:flex; justify-content:space-between; gap:16px; }
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary::after{ content:'+'; font-family:var(--font-mono); color:var(--signal); font-size:20px; flex:none; }
.faq-item[open] summary::after{ content:'\2212'; }
.faq-item p{ margin-top:12px; color:var(--steel); font-size:15px; }

/* ---------- breadcrumb ---------- */
.breadcrumb{ font-family:var(--font-mono); font-size:12px; color:var(--steel); letter-spacing:.03em; }
.breadcrumb a{ color:var(--steel); }
.breadcrumb a:hover{ color:var(--signal); }

/* ---------- footer ---------- */
.site-footer{ background:var(--ink); color:#B9C6DC; padding:64px 0 28px; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:36px; }
@media (max-width:820px){ .footer-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:520px){ .footer-grid{ grid-template-columns:1fr; } }
.site-footer h5{ color:#fff; font-family:var(--font-mono); font-size:12px; letter-spacing:.07em; text-transform:uppercase; margin-bottom:16px; }
.site-footer ul{ display:flex; flex-direction:column; gap:11px; }
.site-footer a{ font-size:14.5px; color:#AEBEDA; }
.site-footer a:hover{ color:#fff; }
.footer-brand{ display:flex; align-items:center; gap:9px; margin-bottom:14px; }
.footer-brand .brand-icon{ height:28px; width:auto; }
.footer-brand .brand-word{ height:17px; width:auto; margin-top:1px; }
.footer-bottom{ margin-top:52px; padding-top:24px; border-top:1px solid var(--line-dark); display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; font-size:13px; color:#7E90AC; }

/* ---------- whatsapp float ---------- */
.wa-float{
  position:fixed; right:20px; bottom:20px; z-index:60;
  width:54px; height:54px; border-radius:50%; background:#25D366;
  display:flex; align-items:center; justify-content:center; box-shadow:0 8px 22px rgba(0,0,0,.22);
  transition:transform .15s ease;
}
.wa-float:hover{ transform:scale(1.06); }
.wa-float svg{ width:26px; height:26px; }

/* ---------- utility ---------- */
.mt-0{margin-top:0;} .center{text-align:center;} .muted{color:var(--steel);}
.badge{ display:inline-flex; align-items:center; gap:6px; font-family:var(--font-mono); font-size:11.5px; padding:5px 10px; border:1px solid var(--line); border-radius:20px; color:var(--steel); }
.two-col{ display:grid; grid-template-columns:1fr 1fr; gap:52px; align-items:start; }
@media (max-width:900px){ .two-col{ grid-template-columns:1fr; gap:32px; } }
.divider{ height:1px; background:var(--line); border:none; margin:0; }
.tag-row{ display:flex; flex-wrap:wrap; gap:10px; }
.tag-row .tag{ font-family:var(--font-mono); font-size:12px; padding:7px 12px; border:1px solid var(--line); border-radius:20px; color:var(--steel); }

/* draft/placeholder content — testimonials & case studies awaiting real client input */
.draft-card{ border:1.5px dashed var(--copper) !important; position:relative; background:var(--copper-soft); }
.draft-tag{ position:absolute; top:-11px; left:18px; background:var(--copper); color:#fff; font-family:var(--font-mono); font-size:10px; letter-spacing:.06em; padding:3px 9px; border-radius:4px; text-transform:uppercase; }
/* testimonial quote styling — big decorative mark behind the quote */
.sector-card blockquote{ position:relative; }
.sector-card blockquote::before{
  content:'\201C';
  position:absolute; top:-34px; left:-6px;
  font-family:var(--font-display); font-size:72px; font-weight:600;
  color:var(--signal-soft); z-index:0; line-height:1;
}
.sector-card blockquote{ position:relative; z-index:1; }

/* subtle radial colour washes — used sparingly to break up flat light sections */
.section-glow{ background-image: radial-gradient(circle at 88% -15%, rgba(46,111,242,.08), transparent 45%); }
.section-glow-copper{ background-image: radial-gradient(circle at -8% 115%, rgba(201,122,61,.09), transparent 45%); }

/* form validation state */
input.invalid, select.invalid, textarea.invalid{ border-color:#D64545; background:#FEF6F6; }

/* service chip selector (request-quote form) */
.chip-select{
  display:inline-flex; align-items:center; gap:8px; padding:10px 16px;
  border:1px solid var(--line); border-radius:20px; cursor:pointer; font-size:14px;
  transition:border-color .15s ease, background .15s ease, color .15s ease;
}
.chip-select:hover{ border-color:var(--signal); }
.chip-select.active{ background:var(--signal-soft); border-color:var(--signal); color:var(--signal-dim); font-weight:600; }
.chip-row{ display:flex; flex-wrap:wrap; gap:10px; }

/* scroll reveal — progressive enhancement only.
   Content is visible by default; the fade/slide-in effect is opt-in,
   applied only once JS confirms it's running (via .has-js on <html>).
   This guarantees content is never hidden if JS fails to load/execute. */
.has-js [data-reveal]{ opacity:0; transform:translateY(14px); transition:opacity .5s ease, transform .5s ease; }
.has-js [data-reveal].is-visible{ opacity:1; transform:none; }