/* ============================================================
   Lumos OpTX — Fiber Network Infrastructure Constructors
   Design system derived from the Prism Point logo sheet
   ============================================================ */

:root {
  /* Surfaces */
  --bg:        #070A0F;
  --bg-2:      #0B0F16;
  --surface:   #11151D;
  --surface-2: #161B26;
  --ink:       #0A2540;

  /* Brand beams */
  --cyan:   #17C3E0;
  --blue:   #2F7DD1;
  --violet: #6C5CE7;
  --paper:  #F4F7FB;

  /* Text */
  --text:  #F3F6FA;
  --muted: #8A98AC;
  --dim:   #6B7787;

  /* Lines */
  --border:   rgba(255,255,255,.07);
  --border-2: rgba(255,255,255,.12);

  --beam: linear-gradient(90deg, var(--cyan), var(--blue) 55%, var(--violet));
  --radius: 14px;
  --maxw: 1200px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Exo 2', system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1,h2,h3,h4 { margin: 0; line-height: 1.1; letter-spacing: -.01em; font-weight: 700; }
p { margin: 0 0 1em; }
ul { margin: 0; padding: 0; list-style: none; }

/* ---------- Layout helpers ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
.section { padding: 96px 0; position: relative; }
.section--tight { padding: 64px 0; }
.center { text-align: center; }
.mono {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--dim);
}

/* Eyebrow label with beam dot */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px; letter-spacing: .18em; text-transform: uppercase;
  color: var(--cyan); margin-bottom: 20px;
}
.eyebrow::before {
  content: ""; width: 26px; height: 2px; border-radius: 2px;
  background: var(--beam);
}

/* Section heads */
.shead { max-width: 720px; margin-bottom: 52px; }
.shead.center { margin-left: auto; margin-right: auto; }
.shead h2 { font-size: clamp(28px, 4vw, 42px); }
.shead p { color: var(--muted); font-size: 18px; margin-top: 16px; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(7,10,15,.72);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 14px; }
.brand .mark { width: 46px; height: auto; }
.brand .wordmark { font-size: 24px; font-weight: 700; letter-spacing: -.01em; }
.brand .wordmark .x { color: var(--cyan); }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  padding: 9px 14px; border-radius: 9px; font-size: 15px; font-weight: 500;
  color: var(--muted); transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--text); background: rgba(255,255,255,.04); }
.nav-links a.active { color: var(--text); }
.nav-links a.active::after {
  content: ""; display: block; height: 2px; border-radius: 2px;
  background: var(--beam); margin-top: 5px;
}
.nav-cta {
  margin-left: 10px; padding: 10px 18px !important; border-radius: 10px;
  background: var(--beam); color: #04161c !important; font-weight: 600;
}
.nav-cta:hover { filter: brightness(1.08); background: var(--beam) !important; }
.nav-toggle {
  display: none; background: none; border: 1px solid var(--border-2);
  border-radius: 9px; padding: 9px 11px; cursor: pointer;
}
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--text); margin: 4px 0; border-radius: 2px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 14px 26px; border-radius: 11px; font-weight: 600; font-size: 15.5px;
  cursor: pointer; border: 1px solid transparent; transition: all .2s var(--ease);
}
.btn-primary { background: var(--beam); color: #04161c; }
.btn-primary:hover { filter: brightness(1.08); transform: translateY(-1px); }
.btn-ghost { background: rgba(255,255,255,.03); border-color: var(--border-2); color: var(--text); }
.btn-ghost:hover { background: rgba(255,255,255,.07); border-color: var(--cyan); }
.btn .arrow { transition: transform .2s var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 104px 0 88px; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(680px 380px at 78% 8%, rgba(23,195,224,.16), transparent 60%),
    radial-gradient(620px 420px at 12% 88%, rgba(108,92,231,.14), transparent 62%);
  pointer-events: none;
}
.hero .wrap { position: relative; z-index: 1; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.hero h1 {
  font-size: clamp(36px, 6vw, 62px); line-height: 1.04; letter-spacing: -.02em;
}
.hero h1 .grad {
  background: var(--beam); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero .lead { font-size: 19px; color: var(--muted); margin: 24px 0 34px; max-width: 560px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* Hero prism visual */
.prism-stage {
  position: relative; aspect-ratio: 1/1; border-radius: 24px;
  background:
    radial-gradient(circle at 30% 35%, rgba(23,195,224,.10), transparent 55%),
    var(--surface);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.prism-stage svg { width: 72%; }
.prism-stage .ring {
  position: absolute; border: 1px solid var(--border); border-radius: 50%;
}
.prism-stage .ring.r1 { inset: 14%; }
.prism-stage .ring.r2 { inset: 26%; opacity: .6; }

/* ---------- Generic page hero (interior) ---------- */
.page-hero { position: relative; padding: 84px 0 56px; overflow: hidden; border-bottom: 1px solid var(--border); }
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(720px 300px at 85% -10%, rgba(47,125,209,.16), transparent 60%);
}
.page-hero .wrap { position: relative; }
.page-hero h1 { font-size: clamp(32px, 5vw, 52px); max-width: 880px; }
.page-hero .lead { font-size: 19px; color: var(--muted); margin-top: 20px; max-width: 680px; }

/* ---------- Cards / grids ---------- */
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 30px;
  transition: border-color .25s, transform .25s var(--ease);
  position: relative; overflow: hidden;
}
.card:hover { border-color: var(--border-2); transform: translateY(-3px); }
.card .ico {
  width: 50px; height: 50px; border-radius: 12px;
  background: rgba(23,195,224,.10); border: 1px solid rgba(23,195,224,.22);
  display: flex; align-items: center; justify-content: center; margin-bottom: 20px;
}
.card .ico svg { width: 26px; height: 26px; stroke: var(--cyan); }
.card h3 { font-size: 20px; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15.5px; margin: 0; }

/* Service card that links */
a.card .more {
  margin-top: 18px; display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 600; color: var(--cyan);
}
a.card:hover .more .arrow { transform: translateX(3px); }
.card .top-beam { position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--beam); transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease); }
a.card:hover .top-beam, .card.feature:hover .top-beam { transform: scaleX(1); }

/* ---------- Feature list (checklist) ---------- */
.feature-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 40px; }
.flist li {
  display: flex; gap: 13px; padding: 11px 0; border-bottom: 1px solid var(--border);
  font-size: 16px; color: var(--text);
}
.flist li::before {
  content: ""; flex: 0 0 auto; width: 20px; height: 20px; margin-top: 3px; border-radius: 6px;
  background: rgba(23,195,224,.12);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2317C3E0' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center / 14px no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2317C3E0' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center / 14px no-repeat;
  background: var(--cyan);
}

/* ---------- Process steps ---------- */
.steps { counter-reset: step; display: grid; gap: 18px; }
.step {
  display: grid; grid-template-columns: 64px 1fr; gap: 22px; align-items: start;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 26px 28px;
}
.step .num {
  counter-increment: step; width: 56px; height: 56px; border-radius: 14px;
  background: var(--bg-2); border: 1px solid var(--border-2);
  display: flex; align-items: center; justify-content: center;
  font-family: 'JetBrains Mono', monospace; font-size: 19px; font-weight: 500;
  color: var(--cyan);
}
.step .num::before { content: counter(step, decimal-leading-zero); }
.step h3 { font-size: 19px; margin-bottom: 7px; }
.step p { color: var(--muted); font-size: 15.5px; margin: 0; }

/* ---------- Stats band ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat { text-align: center; padding: 28px 16px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
.stat .n {
  font-size: 40px; font-weight: 700; letter-spacing: -.02em;
  background: var(--beam); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.stat .l { color: var(--muted); font-size: 14px; margin-top: 6px; }

/* ---------- Split feature ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split.reverse .split-media { order: -1; }
.split-media {
  border-radius: 20px; border: 1px solid var(--border); background: var(--surface);
  padding: 40px; aspect-ratio: 4/3; display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
}
.split-media::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 40%, rgba(47,125,209,.12), transparent 60%);
}

/* ---------- CTA band ---------- */
.cta {
  border: 1px solid var(--border); border-radius: 22px; overflow: hidden;
  background:
    radial-gradient(540px 300px at 85% 20%, rgba(108,92,231,.18), transparent 60%),
    radial-gradient(540px 300px at 10% 90%, rgba(23,195,224,.16), transparent 60%),
    var(--surface);
  padding: 64px; text-align: center;
}
.cta h2 { font-size: clamp(26px, 3.5vw, 38px); }
.cta p { color: var(--muted); font-size: 18px; margin: 16px auto 30px; max-width: 600px; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); background: var(--bg-2); padding: 56px 0 36px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 36px; margin-bottom: 40px; }
.footer-grid h4 { font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--dim); margin-bottom: 16px; font-weight: 600; }
.footer-grid a, .footer-grid li { color: var(--muted); font-size: 15px; padding: 5px 0; display: block; }
.footer-grid a:hover { color: var(--cyan); }
.footer-brand p { color: var(--muted); font-size: 15px; margin-top: 16px; max-width: 300px; }
.footer-bottom {
  border-top: 1px solid var(--border); padding-top: 24px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  color: var(--dim); font-size: 13.5px;
}

/* ---------- Tag / pill ---------- */
.tags { display: flex; flex-wrap: wrap; gap: 9px; }
.tag {
  font-family: 'JetBrains Mono', monospace; font-size: 12.5px; letter-spacing: .03em;
  padding: 6px 12px; border-radius: 8px; background: rgba(255,255,255,.04);
  border: 1px solid var(--border); color: var(--muted);
}

/* ============================================================
   Capabilities Statement (gov / SAM.gov format)
   ============================================================ */
.cap-doc { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; }
.cap-head { padding: 40px 44px; border-bottom: 1px solid var(--border); background: var(--bg-2); display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cap-head .left { display: flex; align-items: center; gap: 20px; }
.cap-head .mark { width: 70px; }
.cap-head .title h2 { font-size: 30px; }
.cap-head .title .x { color: var(--cyan); }
.cap-head .title p { color: var(--muted); margin: 6px 0 0; font-size: 14px; letter-spacing: .04em; }
.cap-head .doclabel { font-family: 'JetBrains Mono', monospace; font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--cyan); text-align: right; }

.cap-body { display: grid; grid-template-columns: 1.5fr 1fr; gap: 0; }
.cap-main { padding: 40px 44px; }
.cap-side { padding: 40px 44px; border-left: 1px solid var(--border); background: rgba(255,255,255,.015); }
.cap-block { margin-bottom: 36px; }
.cap-block:last-child { margin-bottom: 0; }
.cap-block h3 {
  font-size: 15px; letter-spacing: .1em; text-transform: uppercase; color: var(--cyan);
  margin-bottom: 16px; padding-bottom: 10px; border-bottom: 2px solid rgba(23,195,224,.25);
  display: flex; align-items: center; gap: 10px;
}
.cap-block .flist li { font-size: 15px; }
.cap-block p { color: var(--muted); font-size: 15px; }

.cap-data dt { font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--dim); margin-top: 16px; }
.cap-data dd { margin: 3px 0 0; font-size: 15px; color: var(--text); }
.cap-data dd.fill { color: var(--cyan); }

.naics-list li { display: flex; justify-content: space-between; gap: 14px; padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.naics-list li .code { font-family: 'JetBrains Mono', monospace; color: var(--cyan); }
.naics-list li .desc { color: var(--muted); text-align: right; }

.cap-foot { padding: 22px 44px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; color: var(--dim); font-size: 13px; background: var(--bg-2); }

.print-bar { display: flex; justify-content: flex-end; margin-bottom: 20px; }

.note {
  font-size: 13px; color: var(--dim); border: 1px dashed var(--border-2);
  border-radius: 10px; padding: 14px 16px; margin-top: 26px; background: rgba(255,255,255,.02);
}
.placeholder { color: var(--violet); }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .prism-stage { max-width: 420px; margin: 0 auto; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .split, .cap-body { grid-template-columns: 1fr; }
  .split.reverse .split-media { order: 0; }
  .cap-side { border-left: 0; border-top: 1px solid var(--border); }
  .feature-cols { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  body { font-size: 16px; }
  .section { padding: 64px 0; }
  .nav-links {
    position: fixed; inset: 72px 0 auto 0; flex-direction: column; align-items: stretch;
    background: var(--bg); border-bottom: 1px solid var(--border); padding: 14px 20px 22px;
    gap: 4px; transform: translateY(-130%); transition: transform .3s var(--ease); z-index: 55;
  }
  .nav-links.open { transform: none; }
  .nav-links a { padding: 13px 12px; font-size: 16px; }
  .nav-cta { margin: 8px 0 0; text-align: center; }
  .nav-toggle { display: block; }
  .grid-4, .grid-3, .grid-2, .stats { grid-template-columns: 1fr; }
  .cta { padding: 40px 24px; }
  .cap-head, .cap-main, .cap-side, .cap-foot { padding-left: 24px; padding-right: 24px; }
}

/* ---------- Print (capabilities statement) ---------- */
@media print {
  :root { --bg:#fff; --text:#0A2540; }
  body { background:#fff; color:#0A2540; }
  .site-header, .site-footer, .print-bar, .note { display: none !important; }
  .section { padding: 0 !important; }
  .cap-doc { border:none; }
  .cap-head, .cap-foot, .cap-side { background:#fff !important; }
  .reveal { opacity:1 !important; transform:none !important; }
  a { color:#0A2540; }
}