/* ==========================================================================
   Hosted Companies — design system
   Concept: the site as a patch panel / network topology. Services are
   numbered ports (SVC/01 … SVC/11) because they genuinely are a fixed,
   enumerable list — the one narrow place monospace/numbering is earned
   rather than decorative; everything else (nav, buttons, footer) uses the
   same plain sans as the rest of the page.
   Palette/type/nav matched directly to the HCL app + its own PSTN page
   (2026-07-29) - white nav with the real stacked logo, light page
   background, white cards, blue gradient hero used consistently as every
   page's top band, navy CTA band only at the close - not a dark theme.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  /* -- palette (matches HCL app's public/css/style.css) -- */
  --ink:        #16202A;   /* dark navy text + CTA-band background */
  --paper:      #F4F8F8;   /* page background (HCL --bg) */
  --paper-raised: #E9F1F3; /* subtle hover tint on light surfaces */
  --panel-bg:   #FFFFFF;   /* white card/nav background (HCL --panel) */
  --line:       #D7DEE4;   /* hairline / border on light surfaces (HCL --border) */
  --line-dark:  #2C3E4D;   /* hairline on navy/ink surfaces */
  --text-ink:   #16202A;
  --text-paper: #FFFFFF;   /* text on dark/blue bands */
  --text-mute-onpaper: #5B6B78;   /* HCL --muted */
  --text-mute-onink:   #C7DCE6;   /* muted text on navy/blue bands */
  --signal:     #00A4E4;   /* HCL brand blue */
  --signal-dim: #076A94;   /* HCL brand blue, dark */
  --brand-green: #43B14F;  /* HCL brand green — secondary accent */
  --amber:      #D98E2B;   /* alert / deadline (PSTN) */

  /* -- type (matches HCL app's font stack exactly) -- */
  --display: 'Avenir Next', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --body:    'Avenir Next', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --mono:    'IBM Plex Mono', ui-monospace, monospace;  /* service codes / diagram labels only */

  --step--1: clamp(0.83rem, 0.8rem + 0.15vw, 0.9rem);
  --step-0:  clamp(1rem, 0.95rem + 0.2vw, 1.1rem);
  --step-1:  clamp(1.25rem, 1.15rem + 0.4vw, 1.5rem);
  --step-2:  clamp(1.7rem, 1.4rem + 1vw, 2.2rem);
  --step-3:  clamp(2.2rem, 1.8rem + 1.6vw, 3rem);
  --step-4:  clamp(2.6rem, 2rem + 2.4vw, 3.6rem);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text-ink);
  font-family:var(--body);
  font-size:var(--step-0);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px;}

.wrap{max-width:1180px;margin:0 auto;padding-inline:clamp(1.25rem,4vw,3rem);}

/* -- nav -- */
.nav{
  position:sticky;top:0;z-index:40;
  background:var(--panel-bg);
  border-bottom:1px solid var(--line);
}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;min-height:72px;padding-block:.5rem;}
.nav-mark{
  text-decoration:none;display:flex;align-items:center;
}
.nav-mark img{height:34px;width:auto;display:block;}
.nav-links{display:flex;gap:2rem;list-style:none;margin:0;padding:0;}
.nav-links a{
  color:var(--text-mute-onpaper);text-decoration:none;font-size:.94rem;font-weight:500;
}
.nav-links a:hover{color:var(--text-ink);}
.nav-cta{
  font-size:.9rem;font-weight:600;color:#fff;
  background:var(--signal);padding:.6rem 1.3rem;border-radius:999px;text-decoration:none;
}
.nav-cta:hover{background:var(--signal-dim);}
.nav-toggle{
  display:none;background:transparent;border:1px solid var(--line);color:var(--text-ink);
  border-radius:8px;padding:.4rem .7rem;font-size:1.1rem;line-height:1;cursor:pointer;
}

/* -- hero (homepage) + page-hero (every inner page's top band) share the
   same blue gradient treatment, so every page opens the same way -- */
.hero, .page-hero{
  background:linear-gradient(135deg, var(--signal-dim), var(--signal));
  color:var(--text-paper);
  position:relative;overflow:hidden;
}
.hero{padding-block:clamp(3rem,8vw,6.5rem) clamp(2.5rem,6vw,4rem);}
.page-hero{padding-block:clamp(2.5rem,6vw,4rem) clamp(2rem,4vw,3rem);}
.hero-grid{
  display:grid;grid-template-columns:1.15fr 0.85fr;gap:clamp(2rem,5vw,4rem);align-items:center;
}
.hero-eyebrow{
  font-size:.82rem;font-weight:600;color:#fff;
  letter-spacing:.06em;text-transform:uppercase;display:flex;align-items:center;gap:.6rem;
  margin-bottom:1.1rem;
}
.hero-eyebrow::before{content:'';width:22px;height:1px;background:rgba(255,255,255,.6);}
.hero h1, .page-hero h1{
  font-family:var(--display);font-weight:700;
  line-height:1.08;letter-spacing:-.01em;margin:0 0 1.1rem;
}
.hero h1{font-size:var(--step-4);max-width:16ch;}
.page-hero h1{font-size:var(--step-3);}
.hero h1 em{font-style:normal;color:var(--brand-green);}
.hero p.lede, .page-hero p{
  font-size:var(--step-1);color:var(--text-mute-onink);max-width:56ch;margin:0 0 2rem;
}
.page-hero p{margin-bottom:0;}
.hero-actions{display:flex;gap:1rem;flex-wrap:wrap;}
.btn{
  font-family:var(--body);font-size:.95rem;font-weight:600;text-decoration:none;
  padding:.8rem 1.5rem;border-radius:9px;display:inline-flex;align-items:center;gap:.5rem;
  transition:transform .15s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn-solid{background:#fff;color:var(--signal-dim);}
.btn-solid:hover{background:#eaf6fb;}
.btn-ghost{border:1px solid rgba(255,255,255,.4);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;}

/* topology diagram (sits on the blue gradient hero) */
.topo{width:100%;height:auto;}
.topo .node{fill:rgba(255,255,255,.12);stroke:rgba(255,255,255,.35);}
.topo .node.lit{fill:#fff;stroke:#fff;}
.topo .link{stroke:rgba(255,255,255,.25);stroke-width:1;fill:none;}
.topo .link.live{stroke:#fff;stroke-width:1.4;}
.topo .label{font-family:var(--mono);font-size:9px;fill:rgba(255,255,255,.7);}
.topo .pulse{
  fill:#fff;opacity:0;
}
.topo .pulse.d2, .topo .pulse.d4{ fill:var(--brand-green); }
@media (prefers-reduced-motion: no-preference){
  .topo .pulse{ animation: travel 3.6s linear infinite; }
  .topo .pulse.d2{ animation-delay:.9s; }
  .topo .pulse.d3{ animation-delay:1.8s; }
  .topo .pulse.d4{ animation-delay:2.7s; }
}
@keyframes travel{
  0%{opacity:0;}
  4%{opacity:1;}
  92%{opacity:1;}
  100%{opacity:0;}
}

/* -- section headers -- */
.section{padding-block:clamp(3rem,7vw,5.5rem);}
.section.on-ink{background:var(--ink);color:var(--text-paper);}
.section-head{
  display:flex;justify-content:space-between;align-items:flex-end;gap:2rem;
  margin-bottom:clamp(2rem,4vw,3rem);flex-wrap:wrap;
}
.section-eyebrow{
  font-size:.82rem;font-weight:600;letter-spacing:.06em;
  text-transform:uppercase;color:var(--signal-dim);margin:0 0 .6rem;
}
.on-ink .section-eyebrow{color:var(--signal);}
.section-head h2{
  font-family:var(--display);font-weight:600;font-size:var(--step-3);
  margin:0;letter-spacing:-.01em;max-width:20ch;
}
.section-head p{max-width:38ch;color:var(--text-mute-onpaper);margin:0;}
.on-ink .section-head p{color:var(--text-mute-onink);}

/* -- patch panel / service grid -- */
.panel{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line);
}
.port{
  background:var(--panel-bg);padding:1.75rem;position:relative;
  text-decoration:none;color:inherit;
  transition:background .15s ease;
}
.port:hover{background:var(--paper-raised);}
.port:hover .port-led{background:var(--signal);box-shadow:0 0 0 4px rgba(0,164,228,.2);}
.port-code{
  font-family:var(--mono);font-size:var(--step--1);color:var(--text-mute-onpaper);
  display:flex;align-items:center;gap:.5rem;margin-bottom:1rem;
}
.port-led{width:7px;height:7px;border-radius:50%;background:var(--line);transition:.15s ease;flex:none;}
.port h3{
  font-family:var(--display);font-weight:600;font-size:var(--step-1);margin:0 0 .6rem;
  letter-spacing:-.005em;
}
.port p{margin:0;color:var(--text-mute-onpaper);font-size:var(--step--1);}

/* -- proof strip -- */
.proof{
  display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.proof div{
  padding:1.75rem 1.5rem;border-left:1px solid var(--line);
}
.proof div:first-child{border-left:none;}
.proof .figure{font-family:var(--display);font-weight:700;font-size:var(--step-2);color:var(--signal);display:block;}
.proof .label{font-size:var(--step--1);color:var(--text-mute-onpaper);}

/* -- pstn banner -- */
.banner{
  background:var(--amber);color:var(--ink);
  font-size:.9rem;font-weight:500;
  padding:.7rem 0;text-align:center;
}
.banner a{color:var(--ink);text-decoration:underline;font-weight:700;}

/* -- footer -- */
.footer{background:var(--ink);color:var(--text-mute-onink);padding-block:3rem 2rem;
  border-top:1px solid var(--line-dark);}
.footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:2rem;}
.footer-cols{display:flex;gap:3rem;flex-wrap:wrap;}
.footer-col h4{
  font-size:.85rem;font-weight:700;color:var(--text-paper);
  text-transform:uppercase;letter-spacing:.04em;margin:0 0 .9rem;
}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:.5rem;font-size:var(--step--1);}
.footer-col a{text-decoration:none;color:var(--text-mute-onink);}
.footer-col a:hover{color:var(--signal);}
.footer-bottom{
  border-top:1px solid var(--line-dark);margin-top:2.5rem;padding-top:1.5rem;
  font-size:.8rem;color:var(--text-mute-onink);
}
.footer-bottom .wrap{align-items:center;}

/* -- responsive -- */
@media (max-width:860px){
  .hero-grid{grid-template-columns:1fr;}
  .hero-diagram{order:-1;max-width:340px;}
  .nav-toggle{display:block;order:4;}
  .nav-links{
    display:none;order:5;width:100%;
    flex-direction:column;gap:0;margin-top:.5rem;
  }
  .nav-links.is-open{display:flex;}
  .nav-links a{padding:.7rem 0;border-top:1px solid var(--line);}
  .proof{grid-template-columns:repeat(2,1fr);}
  .proof div:nth-child(3){border-left:none;}
}

/* -- reveal-on-scroll (respects reduced motion) -- */
.reveal{opacity:1;transform:none;}
@media (prefers-reduced-motion: no-preference){
  .reveal{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease;}
  .reveal.is-visible{opacity:1;transform:none;}
}