/* ================================================================
   rommelbartolome.com — "Signal" design system
   Bold dark editorial · electric lime · data-constellation motifs
   ================================================================ */

:root {
  --bg: #08090b;
  --bg-2: #0c0e11;
  --surface: #101317;
  --line: rgba(236, 238, 233, .1);
  --line-strong: rgba(236, 238, 233, .22);
  --ink: #eceee9;
  --mut: #98a1ab;
  --faint: #5c656f;
  --acc: #c6f24e;
  --acc-ink: #0c0f04;
  --acc-2: #8f7bff;
  --display: "Space Grotesk", "Inter", ui-sans-serif, system-ui, sans-serif;
  --body: "Inter", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --max: 1180px;
  --pad: clamp(1.1rem, 4vw, 2.5rem);
  --r: 18px;
  --ease: cubic-bezier(.22, .8, .26, .99);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--body);
  font-size: 1.02rem;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
/* faint blueprint grid over the whole canvas */
body::before {
  content: "";
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    linear-gradient(rgba(236,238,233,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(236,238,233,.025) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 80%);
}
main, .page { position: relative; z-index: 1; }

::selection { background: var(--acc); color: var(--acc-ink); }
img { max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }

.wrap { max-width: var(--max); margin: 0 auto; padding-left: var(--pad); padding-right: var(--pad); }
.prose-wrap { max-width: 740px; margin: 0 auto; padding-left: var(--pad); padding-right: var(--pad); }

h1, h2, h3, h4 { font-family: var(--display); font-weight: 600; letter-spacing: -.02em; line-height: 1.08; margin: 0; }

/* mono kicker labels:  01 — SELECTED WORKS */
.kicker {
  font-family: var(--mono); font-size: .72rem; font-weight: 500;
  letter-spacing: .22em; text-transform: uppercase; color: var(--mut);
  display: flex; align-items: center; gap: .9rem;
}
.kicker::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.kicker .idx { color: var(--acc); }

/* ---------------- progress bar (articles) ---------------- */
#progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 0;
  background: var(--acc); z-index: 200;
}

/* ---------------- nav ---------------- */
.site-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background .3s, border-color .3s;
}
.site-nav.scrolled {
  background: rgba(8, 9, 11, .72);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}
.site-nav .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px; gap: 1rem;
}
.brand {
  font-family: var(--mono); font-size: .8rem; font-weight: 500;
  letter-spacing: .18em; color: var(--ink); display: flex; align-items: center; gap: .6rem;
  white-space: nowrap;
}
.brand .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--acc); box-shadow: 0 0 12px var(--acc); }
.nav-links { display: flex; gap: .15rem; list-style: none; margin: 0; padding: 0; flex-wrap: wrap; justify-content: flex-end; }
.nav-links a {
  display: block; padding: .42rem .85rem; border-radius: 999px;
  font-size: .82rem; font-weight: 500; color: var(--mut);
  transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--ink); background: rgba(236,238,233,.06); }
.nav-links a.active { color: var(--acc-ink); background: var(--acc); font-weight: 600; }
@media (max-width: 760px) {
  .site-nav .wrap { height: auto; flex-direction: column; align-items: flex-start; padding-top: .6rem; padding-bottom: .6rem; gap: .35rem; }
  .nav-links { justify-content: flex-start; }
  .nav-links a { padding: .25rem .6rem; font-size: .76rem; }
}

/* ---------------- mega hero (home) ---------------- */
.mega-hero {
  position: relative; min-height: 92svh;
  display: flex; flex-direction: column; justify-content: center;
  padding-top: 84px; overflow: hidden;
}
#constellation { position: absolute; inset: 0; width: 100%; height: 100%; }
.mega-hero::after { /* glow */
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(60% 50% at 72% 18%, rgba(198, 242, 78, .07), transparent 70%),
    radial-gradient(45% 45% at 12% 85%, rgba(143, 123, 255, .08), transparent 70%);
}
.mega-hero .wrap { position: relative; z-index: 2; }
.hero-eyebrow {
  font-family: var(--mono); font-size: .78rem; letter-spacing: .26em;
  text-transform: uppercase; color: var(--acc); margin-bottom: 1.6rem;
  display: flex; align-items: center; gap: .8rem;
}
.hero-eyebrow::before { content: ""; width: 34px; height: 1px; background: var(--acc); }
.mega-hero h1 {
  font-size: clamp(3rem, 11vw, 8.6rem);
  font-weight: 700; line-height: .96; letter-spacing: -.035em;
  text-transform: uppercase; margin: 0 0 1.8rem;
}
.mega-hero h1 .row { display: block; overflow: hidden; }
.mega-hero h1 .row > span { display: inline-block; transform: translateY(110%); animation: rise .9s var(--ease) forwards; }
.mega-hero h1 .row:nth-child(2) > span { animation-delay: .12s; color: transparent; -webkit-text-stroke: 1.5px var(--ink); }
@keyframes rise { to { transform: translateY(0); } }
.hero-sub {
  max-width: 34rem; color: var(--mut); font-size: 1.08rem;
  margin: 0 0 2.4rem; animation: fadeup 1s .5s var(--ease) both;
}
.hero-sub b { color: var(--ink); font-weight: 600; }
@keyframes fadeup { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
.hero-cta { display: flex; gap: .9rem; flex-wrap: wrap; animation: fadeup 1s .65s var(--ease) both; }

.btn {
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: var(--display); font-weight: 600; font-size: .95rem;
  padding: .85rem 1.7rem; border-radius: 999px;
  background: var(--acc); color: var(--acc-ink);
  transition: transform .25s var(--ease), box-shadow .25s;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 32px -8px rgba(198, 242, 78, .45); }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line-strong); }
.btn.ghost:hover { border-color: var(--acc); color: var(--acc); box-shadow: none; }
.btn .arr { transition: transform .25s var(--ease); }
.btn:hover .arr { transform: translateX(4px); }

/* marquee strip at hero base */
.marquee {
  position: relative; z-index: 2; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  margin-top: clamp(2rem, 6vh, 4rem); padding: .9rem 0; overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee-track {
  display: flex; gap: 3.2rem; width: max-content;
  animation: slide 28s linear infinite;
  font-family: var(--mono); font-size: .78rem; letter-spacing: .24em; text-transform: uppercase; color: var(--mut);
  white-space: nowrap;
}
.marquee-track .sep { color: var(--acc); }
@keyframes slide { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) {
  .marquee-track { animation: none; }
  .mega-hero h1 .row > span { animation: none; transform: none; }
  .hero-sub, .hero-cta { animation: none; }
}

/* ---------------- sections ---------------- */
section.block { padding: clamp(4rem, 9vh, 7rem) 0; position: relative; }
.section-head { margin-bottom: clamp(2rem, 5vh, 3.4rem); }
.section-head h2 { font-size: clamp(1.9rem, 4.4vw, 3.1rem); margin-top: 1.1rem; letter-spacing: -.03em; }
.section-head p { color: var(--mut); max-width: 42rem; margin: .9rem 0 0; }

/* scroll reveal */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* ---------------- editorial work list (home + category) ---------------- */
.index-list { border-top: 1px solid var(--line); list-style: none; margin: 0; padding: 0; counter-reset: row; }
.index-list li { border-bottom: 1px solid var(--line); }
.index-list a {
  display: grid; grid-template-columns: 3.4rem 1fr auto; align-items: baseline; gap: 1.2rem;
  padding: 1.5rem .4rem; position: relative; transition: padding-left .35s var(--ease);
}
.index-list a::before {
  counter-increment: row; content: counter(row, decimal-leading-zero);
  font-family: var(--mono); font-size: .78rem; color: var(--faint);
  transition: color .3s;
}
.index-list .t {
  font-family: var(--display); font-weight: 600; letter-spacing: -.015em;
  font-size: clamp(1.15rem, 2.6vw, 1.7rem); line-height: 1.25;
  transition: color .3s;
}
.index-list .d { display: block; color: var(--mut); font-size: .9rem; font-family: var(--body); font-weight: 400; letter-spacing: 0; margin-top: .25rem; }
.index-list .arr {
  font-family: var(--display); font-size: 1.3rem; color: var(--faint);
  transform: translateX(-6px); opacity: 0; transition: all .35s var(--ease);
}
.index-list a:hover { padding-left: 1.1rem; }
.index-list a:hover::before { color: var(--acc); }
.index-list a:hover .t { color: var(--acc); }
.index-list a:hover .arr { transform: none; opacity: 1; color: var(--acc); }
.index-list .tag {
  font-family: var(--mono); font-size: .64rem; letter-spacing: .18em; text-transform: uppercase;
  color: var(--mut); border: 1px solid var(--line-strong); border-radius: 999px;
  padding: .22rem .7rem; white-space: nowrap; justify-self: end;
}
@media (max-width: 680px) {
  .index-list a { grid-template-columns: 2.2rem 1fr; }
  .index-list .arr, .index-list .tag { display: none; }
}

/* ---------------- stats band ---------------- */
.stats-band { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-2); }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.stat {
  padding: 2.6rem 2rem; border-left: 1px solid var(--line);
  position: relative;
}
.stat:first-child { border-left: 0; }
.stat .big {
  font-family: var(--display); font-weight: 700; letter-spacing: -.04em;
  font-size: clamp(2.8rem, 6vw, 4.4rem); line-height: 1; color: var(--acc);
  display: flex; align-items: baseline;
}
.stat .big .suffix { font-size: .45em; margin-left: .1em; }
.stat .label { font-family: var(--mono); font-size: .7rem; letter-spacing: .2em; text-transform: uppercase; color: var(--ink); margin: 1rem 0 .6rem; }
.stat p { margin: 0; color: var(--mut); font-size: .88rem; line-height: 1.6; }
@media (max-width: 680px) { .stat { border-left: 0; border-top: 1px solid var(--line); } .stat:first-child { border-top: 0; } }

/* ---------------- topic cards ---------------- */
.topic-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 1.1rem; }
.topic {
  position: relative; display: flex; flex-direction: column; gap: 1rem;
  border: 1px solid var(--line); border-radius: var(--r);
  background: linear-gradient(180deg, var(--surface), var(--bg-2));
  padding: 2rem 1.8rem 1.7rem; overflow: hidden;
  transition: transform .35s var(--ease), border-color .35s;
}
.topic::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(120% 90% at 85% -10%, rgba(198,242,78,.12), transparent 55%);
  opacity: 0; transition: opacity .4s;
}
.topic:hover { transform: translateY(-5px); border-color: rgba(198,242,78,.4); }
.topic:hover::before { opacity: 1; }
.topic .num { font-family: var(--mono); font-size: .72rem; color: var(--acc); letter-spacing: .2em; }
.topic h3 { font-size: 1.5rem; letter-spacing: -.02em; }
.topic p { margin: 0; color: var(--mut); font-size: .92rem; flex: 1; }
.topic .go { font-family: var(--mono); font-size: .74rem; letter-spacing: .16em; text-transform: uppercase; color: var(--ink); display: flex; gap: .5rem; align-items: center; }
.topic .go .arr { color: var(--acc); transition: transform .3s var(--ease); }
.topic:hover .go .arr { transform: translateX(5px); }

/* ---------------- companies strip ---------------- */
.logo-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 1rem; }
.logo-chip {
  background: #f4f5f2; border-radius: 14px; padding: 1.1rem 1.4rem;
  display: flex; align-items: center; justify-content: center; min-height: 86px;
  filter: grayscale(1); opacity: .82; transition: filter .3s, opacity .3s, transform .3s var(--ease);
}
.logo-chip:hover { filter: none; opacity: 1; transform: translateY(-3px); }
.logo-chip img { max-height: 52px; width: auto; max-width: 100%; }

/* ---------------- CTA / footer ---------------- */
.cta {
  padding: clamp(5rem, 14vh, 9rem) 0; text-align: left; position: relative; overflow: hidden;
  border-top: 1px solid var(--line);
}
.cta::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(55% 70% at 50% 110%, rgba(198,242,78,.1), transparent 70%);
}
.cta .kicker { margin-bottom: 1.4rem; }
.cta h2 {
  font-size: clamp(2.6rem, 8vw, 6rem); letter-spacing: -.035em; line-height: 1; text-transform: uppercase;
  margin-bottom: 2.2rem;
}
.cta h2 .accent { color: transparent; -webkit-text-stroke: 1.5px var(--acc); }
.cta .mail {
  font-family: var(--mono); font-size: clamp(.95rem, 2.6vw, 1.25rem); color: var(--ink);
  border-bottom: 1px solid var(--line-strong); padding-bottom: .35rem;
  transition: color .25s, border-color .25s;
}
.cta .mail:hover { color: var(--acc); border-color: var(--acc); }

footer.site-footer { border-top: 1px solid var(--line); padding: 2.2rem 0 2.6rem; position: relative; z-index: 1; }
footer .frow { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; }
.footer-links { display: flex; gap: 1.6rem; }
.footer-links a { font-family: var(--mono); font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; color: var(--mut); transition: color .25s; }
.footer-links a:hover { color: var(--acc); }
footer .fmeta { font-family: var(--mono); font-size: .68rem; letter-spacing: .1em; color: var(--faint); margin-top: 1.4rem; }

/* ---------------- page hero (inner pages) ---------------- */
.page-hero { padding: clamp(8rem, 18vh, 11rem) 0 clamp(2.5rem, 6vh, 4rem); position: relative; overflow: hidden; }
.page-hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(55% 55% at 80% 0%, rgba(143,123,255,.08), transparent 70%);
}
.page-hero h1 {
  font-size: clamp(2.4rem, 7vw, 5.2rem); text-transform: uppercase; letter-spacing: -.03em; line-height: .98;
  margin-top: 1.2rem;
}
.page-hero .lede { color: var(--mut); max-width: 40rem; font-size: 1.05rem; margin: 1.4rem 0 0; }

/* ---------------- CV ---------------- */
.cv-contact { font-family: var(--mono); font-size: .8rem; letter-spacing: .06em; color: var(--mut); margin-top: 1.6rem; }
.cv-contact a { color: var(--ink); border-bottom: 1px solid var(--line-strong); }
.cv-contact a:hover { color: var(--acc); border-color: var(--acc); }

.skill-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 1rem; }
.card {
  border: 1px solid var(--line); border-radius: var(--r);
  background: linear-gradient(180deg, var(--surface), var(--bg-2));
  padding: 1.6rem 1.5rem; transition: transform .3s var(--ease), border-color .3s;
}
.card:hover { transform: translateY(-4px); border-color: var(--line-strong); }
.card h3 { font-size: 1.08rem; margin-bottom: .5rem; }
.card p { margin: 0; color: var(--mut); font-size: .9rem; }

.timeline { position: relative; margin: 0; padding: 0 0 0 1.8rem; list-style: none; border-left: 1px solid var(--line-strong); }
.timeline > li { position: relative; margin: 0 0 3rem; }
.timeline > li::before {
  content: ""; position: absolute; left: -2.17rem; top: .5em;
  width: .65rem; height: .65rem; border-radius: 50%;
  background: var(--acc); box-shadow: 0 0 0 4px rgba(198,242,78,.15), 0 0 14px rgba(198,242,78,.5);
}
.timeline h3 { font-size: 1.3rem; letter-spacing: -.015em; }
.timeline .org { font-family: var(--mono); font-size: .74rem; letter-spacing: .12em; text-transform: uppercase; color: var(--acc); margin: .5rem 0 .9rem; }
.timeline .org a { border-bottom: 1px solid transparent; }
.timeline .org a:hover { border-color: var(--acc); }
.timeline ul { margin: 0; padding-left: 1.15rem; color: var(--mut); font-size: .94rem; }
.timeline li li { margin: .4rem 0; }
.timeline li li::marker { color: var(--acc); }

.pub { border-left: 2px solid var(--line-strong); padding-left: 1.2rem; margin-bottom: 1.6rem; }
.pub .title { font-family: var(--display); font-weight: 600; font-size: 1.02rem; }
.pub .meta { color: var(--mut); font-size: .85rem; margin-top: .3rem; }

/* ---------------- article ---------------- */
.article-header { padding: clamp(8rem, 16vh, 10rem) 0 1rem; }
.article-header .tag {
  font-family: var(--mono); font-size: .7rem; letter-spacing: .22em; text-transform: uppercase;
  color: var(--acc); border: 1px solid rgba(198,242,78,.35); border-radius: 999px; padding: .3rem .85rem;
  display: inline-block; transition: background .25s, color .25s;
}
.article-header .tag:hover { background: var(--acc); color: var(--acc-ink); }
.article-header h1 { font-size: clamp(2rem, 5.5vw, 3.6rem); letter-spacing: -.025em; line-height: 1.05; margin: 1.4rem 0 1rem; }
.article-header .subtitle { font-size: 1.12rem; color: var(--mut); margin: 0; }
.hero-figure { margin: 2.2rem 0 0; }
.hero-figure img { width: 100%; border-radius: var(--r); border: 1px solid var(--line); }

article.prose { padding: 1.5rem 0 4.5rem; }
article.prose p { margin: 1.15rem 0; color: #c8cdd3; }
article.prose > .prose-wrap > p:first-of-type::first-letter {
  font-family: var(--display); font-weight: 700; color: var(--acc);
  font-size: 3.4em; float: left; line-height: .82; padding-right: .12em; padding-top: .06em;
}
article.prose h2 { font-size: 1.7rem; margin: 2.8rem 0 .8rem; letter-spacing: -.02em; }
article.prose h2::before { content: "// "; color: var(--acc); font-family: var(--mono); font-size: .75em; font-weight: 500; }
article.prose h3 { font-size: 1.2rem; margin: 2.2rem 0 .6rem; }
article.prose a { color: var(--acc); border-bottom: 1px solid rgba(198,242,78,.35); }
article.prose a:hover { border-color: var(--acc); }
article.prose ul, article.prose ol { padding-left: 1.4rem; color: #c8cdd3; }
article.prose li { margin: .45rem 0; }
article.prose li::marker { color: var(--acc); }
article.prose strong { color: var(--ink); }
article.prose blockquote {
  margin: 2rem 0; padding: 1.1rem 1.5rem; border-left: 3px solid var(--acc);
  background: var(--surface); border-radius: 0 12px 12px 0; color: var(--mut); font-style: italic;
}
article.prose code, article.prose pre { font-family: var(--mono); }
article.prose code {
  background: var(--surface); border: 1px solid var(--line); border-radius: 6px;
  padding: .1em .4em; font-size: .86em; color: var(--acc);
}
article.prose pre {
  background: var(--surface); border: 1px solid var(--line); border-radius: 12px;
  padding: 1.1rem 1.3rem; overflow-x: auto; position: relative;
}
article.prose pre::before {
  content: "▮▮▮"; position: absolute; top: .55rem; right: .9rem;
  color: var(--faint); font-size: .5rem; letter-spacing: .25em;
}
article.prose pre code { border: 0; padding: 0; background: none; color: #d7dce2; font-size: .88em; }
article.prose figure { margin: 2.4rem 0; text-align: center; }
article.prose figure img { border-radius: 14px; border: 1px solid var(--line); }
article.prose figcaption { font-family: var(--mono); font-size: .72rem; letter-spacing: .08em; color: var(--faint); margin-top: .8rem; }
.refs { font-size: .84rem; color: var(--mut); border-top: 1px solid var(--line); margin-top: 3rem; padding-top: 1.4rem; overflow-wrap: anywhere; }
.refs p { margin: .4rem 0; }

/* prev / next */
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 3.5rem; }
.pager a {
  border: 1px solid var(--line); border-radius: var(--r); padding: 1.2rem 1.4rem;
  display: flex; flex-direction: column; gap: .4rem;
  transition: border-color .3s, transform .3s var(--ease);
}
.pager a:hover { border-color: var(--acc); transform: translateY(-3px); }
.pager .dir { font-family: var(--mono); font-size: .66rem; letter-spacing: .2em; text-transform: uppercase; color: var(--faint); }
.pager .pt { font-family: var(--display); font-weight: 600; font-size: .98rem; line-height: 1.3; }
.pager a.next { text-align: right; align-items: flex-end; }
.pager a:hover .pt { color: var(--acc); }
@media (max-width: 600px) { .pager { grid-template-columns: 1fr; } }

.back-link { display: inline-flex; gap: .5rem; margin-top: 2.4rem; font-family: var(--mono); font-size: .76rem; letter-spacing: .16em; text-transform: uppercase; color: var(--mut); }
.back-link:hover { color: var(--acc); }