/* ============================================================
   Aphelion Systems — design system
   Cosmic / constellation theme. Dark "space" sections reveal the
   animated background; light sections sit opaque on top.
   ============================================================ */
:root{
  --bg:#080B16; --bg2:#0C1124; --panel:#111A33; --panel-2:#0E1730;
  --light:#F5F6FB; --light-2:#ECEEF6; --white:#FFFFFF;
  --ink:#0F1426; --ink-soft:#3C4256; --muted:#5C6478; --line:#E5E7F0;
  --indigo:#838DFF; --indigo-deep:#5C68F0; --amber:#F5B14C; --amber-soft:#FFD79A;
  --on-dark:#E9ECF7; --muted-dark:#99A1BB; --line-dark:rgba(255,255,255,.11);
  --display:"Space Grotesk",system-ui,sans-serif;
  --body:"Inter",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,monospace;
  --shell:1180px; --r:18px;
}
*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth; background:var(--bg);}
body{
  font-family:var(--body); color:var(--ink); -webkit-font-smoothing:antialiased; line-height:1.6;
  background:
    radial-gradient(1100px 720px at 82% -6%, rgba(245,177,76,.13), transparent 60%),
    radial-gradient(1200px 800px at 8% 4%, rgba(92,104,240,.20), transparent 62%),
    radial-gradient(900px 900px at 60% 120%, rgba(92,104,240,.12), transparent 60%),
    var(--bg);
}
body.nav-open{overflow:hidden;}
img{display:block; max-width:100%;}
a{color:inherit; text-decoration:none;}

/* animated background canvas */
#space{position:fixed; inset:0; z-index:0; pointer-events:none;}

/* layout */
.shell{max-width:var(--shell); margin:0 auto; padding:0 32px;}
.section{position:relative; z-index:1; padding:104px 0; background:var(--light); color:var(--ink);}
.section.alt{background:var(--light-2);}
.section.dark{background:transparent; color:var(--on-dark);}        /* reveals canvas */
.section.tight{padding:84px 0;}
.section-head{max-width:680px; margin-bottom:50px;}
.section-head.center{margin-left:auto; margin-right:auto; text-align:center;}
.eyebrow{display:inline-flex; align-items:center; gap:9px; font-family:var(--mono); font-size:12px; font-weight:500; letter-spacing:.12em; text-transform:uppercase; color:var(--indigo-deep);}
.eyebrow::before{content:""; width:18px; height:1.5px; background:var(--amber);}
.section.dark .eyebrow, .eyebrow.on-dark{color:var(--amber-soft);}
.section-title{font-family:var(--display); font-weight:600; font-size:clamp(28px,3.4vw,40px); line-height:1.1; letter-spacing:-.02em; margin-top:14px;}
.section.dark .section-title{color:#fff;}
.section-sub{font-size:17px; color:var(--muted); margin-top:14px; max-width:560px;}
.section.dark .section-sub{color:var(--muted-dark);}
.section-head.center .section-sub{margin-left:auto; margin-right:auto;}

/* buttons */
.btn{display:inline-flex; align-items:center; gap:9px; font-family:var(--body); font-weight:600; font-size:15px; padding:13px 24px; border-radius:11px; cursor:pointer; border:1px solid transparent; transition:transform .15s ease, background .2s ease, border-color .2s ease;}
.btn:hover{transform:translateY(-1px);}
.btn-amber{background:var(--amber); color:#241701;}
.btn-indigo{background:var(--indigo-deep); color:#fff;}
.btn-ghost{background:transparent; color:var(--on-dark); border-color:var(--line-dark);}
.btn-ghost:hover{border-color:var(--indigo);}
.btn-ghost-dark{background:transparent; color:var(--ink); border-color:var(--line);}

/* reveal */
[data-reveal]{opacity:0; transform:translateY(20px); transition:opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1);}
[data-reveal].is-visible{opacity:1; transform:none;}
[data-reveal][data-delay="1"]{transition-delay:.08s;}
[data-reveal][data-delay="2"]{transition-delay:.16s;}
[data-reveal][data-delay="3"]{transition-delay:.24s;}
@media (prefers-reduced-motion: reduce){ [data-reveal]{opacity:1; transform:none; transition:none;} }

/* ============ nav ============ */
.nav{position:fixed; top:0; left:0; right:0; z-index:40; transition:background .25s ease, border-color .25s ease;}
.nav .shell{display:flex; align-items:center; justify-content:space-between; height:78px;}
.nav.is-scrolled{background:rgba(8,11,22,.78); backdrop-filter:blur(12px); border-bottom:1px solid var(--line-dark);}
.brand{display:flex; align-items:center; gap:11px; font-family:var(--display); font-weight:600; font-size:20px; color:#fff;}
.brand .mark{width:30px; height:30px;}
.nav-links{display:flex; gap:30px;}
.nav-links a{color:var(--muted-dark); font-size:15px; font-weight:500;}
.nav-links a:hover, .nav-links a[aria-current="page"]{color:#fff;}
.nav-cta{display:flex; align-items:center; gap:16px;}
.nav-toggle{display:none; flex-direction:column; gap:5px; background:none; border:0; cursor:pointer; padding:8px;}
.nav-toggle span{display:block; width:22px; height:2px; background:#fff; border-radius:2px;}

/* ============ hero ============ */
.hero{position:relative; z-index:1; color:var(--on-dark); overflow:hidden;}
.hero-glow{position:absolute; inset:0; z-index:0; pointer-events:none; background:
  radial-gradient(680px 420px at 50% -10%, rgba(245,177,76,.12), transparent 60%);}
.hero-inner{position:relative; z-index:2; text-align:center; max-width:800px; margin:0 auto; padding:184px 0 120px;}
.hero-inner .eyebrow{margin-bottom:22px;}
.hero h1{font-family:var(--display); font-weight:600; font-size:clamp(33px,4.6vw,52px); line-height:1.08; letter-spacing:-.02em; color:#fff; max-width:760px; margin:0 auto;}
.hero h1 .accent{color:var(--amber-soft);}
.hero .lede{color:var(--muted-dark); font-size:18px; margin:22px auto 34px; max-width:580px;}
.hero-actions{display:flex; gap:13px; flex-wrap:wrap; justify-content:center;}
.hero-trust{display:flex; gap:8px; flex-wrap:wrap; justify-content:center; align-items:center; margin:46px auto 0; padding-top:26px; border-top:1px solid var(--line-dark); max-width:680px;}
.hero-trust b{font-size:14px; color:var(--on-dark); font-weight:600;}
.dotsep{color:var(--indigo); margin:0 6px;}

/* slim page hero for subpages */
.page-hero{position:relative; z-index:1; color:var(--on-dark); text-align:center; overflow:hidden;}
.page-hero .shell{padding-top:158px; padding-bottom:64px;}
.page-hero h1{font-family:var(--display); font-weight:600; font-size:clamp(30px,4vw,46px); color:#fff; letter-spacing:-.02em; margin:14px auto 0; max-width:720px;}
.page-hero p{color:var(--muted-dark); font-size:17px; margin:16px auto 0; max-width:560px;}

/* ============ generic cards / grids ============ */
.grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:18px;}
.grid-2{display:grid; grid-template-columns:repeat(2,1fr); gap:22px;}
.card{border-radius:var(--r); padding:26px 24px; background:var(--white); border:1px solid var(--line);}
.section.dark .card{background:var(--panel); border-color:var(--line-dark);}
.card-link{transition:transform .15s ease, box-shadow .2s ease;}
.card-link:hover{transform:translateY(-3px); box-shadow:0 22px 44px -28px rgba(20,28,64,.4);}

/* services */
.svc-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:18px;}
.svc{background:var(--white); border:1px solid var(--line); border-radius:var(--r); padding:28px 26px; transition:transform .15s ease, box-shadow .2s ease;}
.svc:hover{transform:translateY(-3px); box-shadow:0 22px 44px -28px rgba(20,28,64,.4);}
.svc .ico{width:46px; height:46px; border-radius:12px; display:grid; place-items:center; background:linear-gradient(140deg,#EEF0FF,#E0E4FF); color:var(--indigo-deep); margin-bottom:18px;}
.svc:nth-child(2) .ico,.svc:nth-child(5) .ico{background:linear-gradient(140deg,#FFF3E0,#FFE7C4); color:#C7821F;}
.svc h3{font-family:var(--display); font-weight:600; font-size:20px; color:var(--ink);}
.svc p{font-size:14.5px; color:var(--muted); margin-top:8px;}

/* work / projects */
.work-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:22px;}
.proj{background:var(--panel); border:1px solid var(--line-dark); border-radius:var(--r); overflow:hidden; transition:transform .15s ease;}
.proj:hover{transform:translateY(-3px);}
.proj .thumb{height:226px; overflow:hidden; border-bottom:1px solid var(--line-dark);}
.proj .thumb img{width:100%; height:100%; object-fit:cover; object-position:top;}
.proj .body{padding:22px 24px 26px;}
.proj .tags{display:flex; gap:8px; margin-bottom:12px;}
.tag{font-family:var(--mono); font-size:11px; font-weight:500; letter-spacing:.03em; padding:5px 11px; border-radius:999px; background:rgba(131,141,255,.14); color:#AEB6FF;}
.tag.real{background:rgba(245,177,76,.16); color:var(--amber-soft);}
.proj h3{font-family:var(--display); font-weight:600; font-size:21px; color:#fff;}
.proj p{font-size:14.5px; color:var(--muted-dark); margin-top:8px;}
.proj .text-link{display:inline-block; margin-top:14px; color:var(--indigo); font-weight:600; font-size:14px;}

/* audience pills */
.audience-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:14px;}
.audience-grid article{background:var(--white); border:1px solid var(--line); border-radius:12px; padding:18px 20px; font-weight:600; color:var(--ink); display:flex; align-items:center; gap:10px;}
.audience-grid article::before{content:""; width:8px; height:8px; border-radius:50%; background:var(--indigo-deep);}

/* timeline / process */
.timeline{list-style:none; display:grid; grid-template-columns:repeat(5,1fr); gap:16px; counter-reset:step;}
.timeline.stack{grid-template-columns:1fr; gap:14px; max-width:760px;}
.timeline li{position:relative; padding-top:22px; border-top:2px solid var(--indigo-deep);}
.timeline li span{font-family:var(--mono); font-size:13px; color:var(--indigo-deep); font-weight:500;}
.section.dark .timeline li span{color:var(--indigo);}
.timeline li h3{font-family:var(--display); font-weight:600; font-size:18px; margin:8px 0 6px; color:inherit;}
.timeline li p{font-size:14px; color:var(--muted);}
.section.dark .timeline li p{color:var(--muted-dark);}

/* pricing tiers */
.tier-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:18px; align-items:stretch;}
.tier{display:flex; flex-direction:column; background:var(--white); border:1px solid var(--line); border-radius:var(--r); padding:30px 26px;}
.section.dark .tier{background:var(--panel); border-color:var(--line-dark);}
.tier.feat{border-color:var(--indigo); box-shadow:0 0 0 1px var(--indigo); position:relative;}
.tier .badge{position:absolute; top:-11px; left:26px; background:var(--indigo-deep); color:#fff; font-family:var(--mono); font-size:10.5px; letter-spacing:.08em; text-transform:uppercase; padding:5px 12px; border-radius:999px;}
.tier .pname{font-family:var(--mono); font-size:12.5px; letter-spacing:.06em; text-transform:uppercase; color:var(--muted);}
.section.dark .tier .pname{color:var(--muted-dark);}
.tier .cost{font-family:var(--display); font-weight:600; font-size:38px; margin:12px 0 4px; color:var(--ink);}
.section.dark .tier .cost{color:#fff;}
.tier .cost small{font-family:var(--body); font-size:14px; color:var(--muted); font-weight:500;}
.tier p{font-size:14.5px; color:var(--muted); margin-top:4px;}
.section.dark .tier p{color:var(--muted-dark);}
.tier ul{list-style:none; margin:18px 0 24px; display:flex; flex-direction:column; gap:10px;}
.tier li{font-size:14px; color:var(--ink-soft); padding-left:24px; position:relative;}
.section.dark .tier li{color:#cdd2e2;}
.tier li::before{content:"✓"; position:absolute; left:0; color:var(--indigo-deep); font-weight:700;}
.tier .go{margin-top:auto; text-align:center; padding:12px; border-radius:10px; border:1.5px solid var(--line); font-weight:700; font-size:14px;}
.section.dark .tier .go{border-color:var(--line-dark); color:#fff;}
.tier.feat .go{background:var(--indigo-deep); color:#fff; border-color:var(--indigo-deep);}

/* console / engineering signal */
.split{display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center;}
.console{background:var(--panel-2); border:1px solid var(--line-dark); border-radius:var(--r); padding:22px; font-family:var(--mono); color:var(--on-dark);}
.console .bar{display:flex; gap:7px; margin-bottom:18px;}
.console .bar span{width:11px; height:11px; border-radius:50%; background:rgba(255,255,255,.18);}
.console .bar span:first-child{background:var(--amber);}
.console .line{display:flex; justify-content:space-between; gap:18px; padding:11px 0; border-top:1px solid var(--line-dark); font-size:13.5px;}
.console .line span{color:var(--indigo);}
.console .line strong{color:#fff; font-weight:500; text-align:right;}

/* founder */
.founder-card{background:var(--white); border:1px solid var(--line); border-radius:var(--r); padding:30px 28px;}
.section.dark .founder-card{background:var(--panel); border-color:var(--line-dark);}
.founder-card .ava{width:56px; height:56px; border-radius:14px; display:grid; place-items:center; font-family:var(--display); font-weight:700; font-size:20px; color:#0A0B0D; background:linear-gradient(135deg,var(--amber-soft),var(--amber)); margin-bottom:18px;}
.founder-card h3{font-family:var(--display); font-weight:600; font-size:22px; color:inherit;}
.founder-card p{font-size:14.5px; color:var(--muted); margin-top:8px;}
.section.dark .founder-card p{color:var(--muted-dark);}
.founder-card .text-link{display:inline-block; margin-top:14px; color:var(--indigo-deep); font-weight:600; font-size:14px;}
.section.dark .founder-card .text-link{color:var(--indigo);}

/* CTA */
.cta-panel{max-width:860px; margin:0 auto; text-align:center;}
.cta-panel h2{font-family:var(--display); font-weight:600; font-size:clamp(28px,3.6vw,40px); color:#fff; letter-spacing:-.02em;}
.cta-panel p{color:var(--muted-dark); font-size:17px; margin:14px auto 28px; max-width:560px;}

/* FAQ */
.faq{max-width:820px; margin:0 auto; display:flex; flex-direction:column; gap:12px;}
.faq details{background:var(--white); border:1px solid var(--line); border-radius:14px; padding:4px 22px;}
.faq summary{list-style:none; cursor:pointer; padding:18px 0; font-family:var(--display); font-weight:600; font-size:17px; color:var(--ink); display:flex; justify-content:space-between; align-items:center; gap:16px;}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{content:"+"; color:var(--indigo-deep); font-size:22px; font-weight:400;}
.faq details[open] summary::after{content:"–";}
.faq details p{font-size:15px; color:var(--muted); padding:0 0 20px;}

/* prose (privacy / terms / about) */
.prose{max-width:760px; margin:0 auto;}
.prose h2{font-family:var(--display); font-weight:600; font-size:24px; color:var(--ink); margin:34px 0 10px;}
.prose p{font-size:16px; color:var(--ink-soft); margin-top:12px;}
.prose ul{margin:12px 0 0 20px;} .prose li{font-size:16px; color:var(--ink-soft); margin-top:8px;}

/* forms */
.contact-layout{display:grid; grid-template-columns:1fr 1.1fr; gap:52px; align-items:start;}
.contact-copy h1{font-family:var(--display); font-weight:600; font-size:clamp(28px,3.4vw,38px); color:#fff; letter-spacing:-.02em; margin-top:12px;}
.contact-copy p{color:var(--muted-dark); font-size:16.5px; margin-top:16px; max-width:440px;}
.contact-aside{margin-top:26px; border-top:1px solid var(--line-dark);}
.contact-aside .row{display:flex; gap:16px; padding:14px 0; border-bottom:1px solid var(--line-dark);}
.contact-aside .k{font-family:var(--mono); font-size:12px; letter-spacing:.08em; text-transform:uppercase; color:var(--muted-dark); width:96px;}
.contact-aside .v{color:#fff;}
.contact-form{background:rgba(255,255,255,.03); border:1px solid var(--line-dark); border-radius:var(--r); padding:28px; display:grid; gap:16px;}
.contact-form label{display:block; font-size:13px; font-weight:600; color:var(--muted-dark);}
.contact-form input,.contact-form select,.contact-form textarea{width:100%; margin-top:7px; background:rgba(255,255,255,.04); border:1px solid var(--line-dark); border-radius:11px; padding:12px 14px; color:#fff; font-family:var(--body); font-size:15px;}
.contact-form input::placeholder,.contact-form textarea::placeholder{color:#6E768E;}
.contact-form textarea{resize:vertical;}
.contact-form .button, .contact-form button{justify-content:center; width:100%;}
.form-status{font-size:13px; color:var(--muted-dark);}

/* ============ footer ============ */
.site-footer{position:relative; z-index:1; background:#05070F; color:var(--muted-dark); padding:54px 0 30px; border-top:1px solid var(--line-dark);}
.footer-grid{display:grid; grid-template-columns:1.5fr 1fr 1fr; gap:34px;}
.site-footer .brand{margin-bottom:10px;}
.site-footer .tagline{font-size:14px; max-width:300px;}
.site-footer .colhead{font-family:var(--mono); font-size:11px; letter-spacing:.12em; text-transform:uppercase; color:#5A6178; margin-bottom:14px;}
.site-footer a.flink{display:block; font-size:14px; margin-bottom:10px; color:var(--muted-dark);}
.site-footer a.flink:hover{color:#fff;}
.site-footer .email{color:var(--indigo); font-weight:500;}
.footer-bottom{border-top:1px solid var(--line-dark); margin-top:40px; padding-top:22px; display:flex; justify-content:space-between; font-size:13px; color:#5A6178;}

/* ============ responsive ============ */
@media (max-width:900px){
  .nav-links{position:fixed; inset:78px 0 auto 0; flex-direction:column; gap:0; background:rgba(8,11,22,.97); border-bottom:1px solid var(--line-dark); padding:8px 32px 20px; transform:translateY(-12px); opacity:0; pointer-events:none; transition:.2s;}
  .nav-links.open{transform:none; opacity:1; pointer-events:auto;}
  .nav-links a{padding:14px 0; border-bottom:1px solid var(--line-dark);}
  .nav-toggle{display:flex;}
  .grid-3,.svc-grid,.work-grid,.grid-2,.audience-grid,.tier-grid,.split,.contact-layout{grid-template-columns:1fr;}
  .timeline{grid-template-columns:1fr 1fr;}
  .section{padding:72px 0;}
}
@media (max-width:560px){ .timeline{grid-template-columns:1fr;} .shell{padding:0 22px;} }