/* Ralph de la Vega — Design C (Dark Tech). Uses the same class names as the light system so all pages share it.
   Near-black canvas, lime/blue glows, Space Grotesk + Inter + Space Mono. */
:root{
  --bg:#0a0f16; --panel:#0d1420; --panel-2:#111a24; --line:rgba(255,255,255,.09);
  --text:#e8edf2; --muted:#9aa7b4; --lime:#c4da56; --blue:#0082cb; --deep:#004e78;
  --glass:rgba(255,255,255,.04); --wrap:1180px;
  /* aliases so pages that reuse the light-theme tokens degrade to dark */
  --alt:#0d1420; --ink:#ffffff; --faded:#9aa7b4; --grad:linear-gradient(135deg,#004e78,#0082cb);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{font-family:'Inter',system-ui,sans-serif;font-weight:300;color:var(--text);background:var(--bg);font-size:18px;line-height:1.7;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{font-family:'Space Grotesk',sans-serif;color:#fff;font-weight:700;line-height:1.1;letter-spacing:-.01em}
img{max-width:100%;display:block}
a{color:var(--lime);text-decoration:none;transition:color .2s}
a:hover{color:#fff}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 26px}
.section{padding:92px 0;position:relative}
.section.alt{background:var(--panel)}
.section.grad{background:linear-gradient(180deg,#0a0f16,#0d1a26);position:relative;overflow:hidden}
.section.grad::before{content:"";position:absolute;left:50%;top:-40%;width:900px;height:600px;transform:translateX(-50%);background:radial-gradient(closest-side,rgba(0,130,203,.28),transparent);filter:blur(20px)}
.section.grad>*{position:relative;z-index:1}
.eyebrow{font-family:'Space Mono',monospace;text-transform:uppercase;letter-spacing:3px;font-size:12px;color:var(--lime);font-weight:400}
.sec-head{text-align:center;max-width:760px;margin:0 auto 54px}
.sec-head h2{font-size:clamp(30px,4vw,46px);margin:10px 0 0;color:#fff}
.sec-head p{margin-top:14px;color:var(--muted)}
.lede{font-size:21px;color:var(--text)}
.accent{color:var(--lime)}

.btn{display:inline-block;background:var(--lime);color:#0a0f16;font-family:'Space Mono',monospace;font-weight:700;text-transform:uppercase;letter-spacing:1px;font-size:13px;padding:14px 30px;border-radius:6px;border:1px solid var(--lime);transition:.25s;cursor:pointer}
.btn:hover{background:transparent;color:var(--lime);box-shadow:0 0 24px rgba(196,218,86,.35)}
.btn-lime{background:var(--lime);border-color:var(--lime);color:#0a0f16}
.btn-lime:hover{background:transparent;color:var(--lime)}
.btn-ghost,.btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.btn-ghost:hover,.btn-outline:hover{border-color:var(--lime);color:var(--lime);box-shadow:0 0 24px rgba(196,218,86,.25)}

/* header */
header.site{position:sticky;top:0;z-index:100;background:rgba(10,15,22,.82);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:18px;max-width:var(--wrap);margin:0 auto;padding:12px 26px}
.nav .logo img{height:42px}
.nav ul{display:flex;gap:22px;list-style:none;align-items:center}
.nav a.navlink{color:var(--muted);font-family:'Space Mono',monospace;font-weight:400;text-transform:uppercase;letter-spacing:1px;font-size:12px}
.nav a.navlink:hover,.nav a.navlink.active{color:var(--lime)}
.nav .rt{display:flex;gap:12px;align-items:center}
.nav .rt svg{width:19px;height:19px;fill:var(--muted);transition:.2s}
.nav .rt a:hover svg{fill:var(--lime)}
.menu-btn{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.menu-btn span{display:block;height:2px;width:26px;background:#fff}
.mobile-nav{display:none;background:var(--panel);border-top:1px solid var(--line)}
.mobile-nav.open{display:block}
.mobile-nav a{display:block;padding:13px 26px;color:var(--text);font-family:'Space Mono',monospace;text-transform:uppercase;letter-spacing:1px;font-size:12px;border-bottom:1px solid var(--line)}

/* hero */
.phero{position:relative;background:linear-gradient(180deg,#0a0f16,#0c1622);color:#fff;padding:96px 24px 84px;text-align:center;overflow:hidden}
.phero::before{content:"";position:absolute;left:50%;top:-30%;width:1000px;height:700px;transform:translateX(-50%);background:radial-gradient(closest-side,rgba(196,218,86,.14),transparent 70%),radial-gradient(closest-side,rgba(0,130,203,.25),transparent 70%);opacity:.9}
.phero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:44px 44px;mask-image:radial-gradient(ellipse at center,#000,transparent 75%);opacity:.5}
.phero>*{position:relative;z-index:1}
.phero .eyebrow{color:var(--lime)}
.phero h1{color:#fff;font-size:clamp(34px,5vw,58px);max-width:940px;margin:14px auto 0}
.phero p{max-width:720px;margin:18px auto 0;color:var(--muted);font-size:20px}

/* grids/cards */
.grid{display:grid;gap:26px}
.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(--glass);border:1px solid var(--line);border-radius:12px;overflow:hidden;display:flex;flex-direction:column;transition:.25s;backdrop-filter:blur(6px)}
.card:hover{transform:translateY(-5px);border-color:rgba(196,218,86,.4);box-shadow:0 18px 44px rgba(0,0,0,.5),0 0 22px rgba(196,218,86,.08)}
.card .ph{aspect-ratio:16/9;overflow:hidden;background:#0c141d}
.card .ph img{width:100%;height:100%;object-fit:cover;transition:transform .5s;opacity:.92}
.card:hover .ph img{transform:scale(1.05);opacity:1}
.card .cbody{padding:22px 24px;display:flex;flex-direction:column;flex:1}
.card .meta{font-family:'Space Mono',monospace;font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:1px;margin-bottom:8px}
.card .meta .pub{color:var(--lime)}
.card h3{font-size:20px;margin-bottom:8px;line-height:1.25;color:#fff}
.card h3 a{color:#fff}.card h3 a:hover{color:var(--lime)}
.card p{font-size:15px;color:var(--muted)}
.card .rl{margin-top:auto;padding-top:12px;font-family:'Space Mono',monospace;font-weight:700;color:var(--lime);font-size:12px;text-transform:uppercase;letter-spacing:1px}

/* prose */
.prose{max-width:800px;margin:0 auto;font-size:18px;color:var(--text)}
.prose p{margin-bottom:18px}
.prose h2{font-size:28px;margin:32px 0 12px;color:#fff}
.prose h3{font-size:22px;margin:26px 0 10px;color:#fff}
.prose a{color:var(--lime);text-decoration:underline}
.prose img{border-radius:10px;margin:22px 0;border:1px solid var(--line)}
.prose blockquote{border-left:3px solid var(--lime);padding:6px 0 6px 22px;margin:22px 0;font-family:'Space Grotesk',sans-serif;font-size:21px;color:#fff}
.prose iframe{width:100%;aspect-ratio:16/9;border:0;border-radius:10px;margin:22px 0}

/* timeline */
.tl{position:relative;max-width:900px;margin:0 auto}
.tl::before{content:"";position:absolute;left:120px;top:0;bottom:0;width:2px;background:linear-gradient(var(--blue),var(--lime));opacity:.5}
.tl-item{position:relative;padding:0 0 34px 160px}
.tl-item .yr{position:absolute;left:0;top:2px;width:100px;text-align:right;font-family:'Space Mono',monospace;font-size:13px;color:var(--lime);text-transform:uppercase;letter-spacing:1px}
.tl-item::before{content:"";position:absolute;left:113px;top:6px;width:16px;height:16px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 4px rgba(196,218,86,.15),0 0 16px rgba(196,218,86,.6)}
.tl-item .in,.tl-item>h3{background:var(--glass);border:1px solid var(--line);border-radius:10px;padding:18px 22px;backdrop-filter:blur(6px)}
.tl-item h3{font-size:20px;margin:0 0 6px;color:#fff}
.tl-item p{color:var(--muted);font-size:16px;margin:0}
.tl-item .in h3{background:none;border:0;padding:0}
@media(max-width:640px){.tl::before{left:8px}.tl-item{padding-left:34px}.tl-item .yr{position:static;width:auto;text-align:left;margin-bottom:6px}.tl-item::before{left:1px}}

/* chips */
.chips{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:36px}
.chip{background:var(--glass);border:1px solid var(--line);color:var(--text);font-family:'Space Mono',monospace;font-size:12px;text-transform:uppercase;letter-spacing:.5px;padding:8px 16px;border-radius:30px;cursor:pointer;transition:.2s}
.chip:hover,.chip.on{background:var(--lime);border-color:var(--lime);color:#0a0f16}

/* footer */
footer.site{background:#070b11;color:var(--muted);padding:56px 0 28px;border-top:1px solid var(--line)}
footer.site .fgrid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:36px;max-width:var(--wrap);margin:0 auto;padding:0 26px}
footer.site img.flogo{height:42px;margin-bottom:14px}
footer.site h4{color:#fff;font-family:'Space Mono',monospace;font-weight:700;font-size:13px;letter-spacing:1px;text-transform:uppercase;margin-bottom:12px}
footer.site a{color:var(--muted)}footer.site a:hover{color:var(--lime)}
footer.site ul{list-style:none}footer.site li{margin-bottom:8px}
footer .fsoc{display:flex;gap:14px;margin-top:14px}
footer .fsoc svg{width:22px;height:22px;fill:var(--muted)}footer .fsoc a:hover svg{fill:var(--lime)}
footer .fine{max-width:var(--wrap);margin:36px auto 0;padding:20px 26px 0;border-top:1px solid var(--line);font-family:'Space Mono',monospace;font-size:12px;color:#6b7684}

/* design switcher */
.dswitch{position:fixed;top:14px;right:14px;z-index:2000;display:flex;gap:4px;background:rgba(13,20,32,.85);backdrop-filter:blur(8px);border:1px solid var(--line);border-radius:30px;padding:4px}
.dswitch a,.dswitch span{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-family:'Space Mono',monospace;font-weight:700;font-size:12px;text-decoration:none;color:var(--muted)}
.dswitch .cur{background:var(--lime);color:#0a0f16}

.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s,transform .7s}
.reveal.in{opacity:1;transform:none}

@media(max-width:920px){
  .nav ul,.nav .rt{display:none}
  .menu-btn{display:flex}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  footer.site .fgrid{grid-template-columns:1fr;gap:24px}
  .section{padding:60px 0}
}
@media(max-width:560px){ .grid-4{grid-template-columns:1fr} }