/* ============================================
   mauricioh2.com — global styles
   ============================================ */
:root {
  --accent: oklch(0.52 0.1 195);
  --accent-light: oklch(0.75 0.1 195);
  --bg: #FAFAF7;
  --strip: #F3F3EE;
  --card: #FFFFFF;
  --ink: #1A1D1C;
  --body: #3C403E;
  --muted: #6B6F6D;
  --line: #E4E4DE;
  --line-soft: #EEEEE8;
}
@supports not (color: oklch(0.5 0.1 195)) {
  :root { --accent: #2A7F8A; --accent-light: #7FC4CC; }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Space Grotesk', sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--ink); }
::selection { background: rgba(42, 127, 138, 0.2); }
img { max-width: 100%; }

.mono { font-family: 'IBM Plex Mono', monospace; }
.container { max-width: 1040px; margin: 0 auto; padding: 0 32px; }

/* ---------- Nav ---------- */
.site-nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(250, 250, 247, 0.92);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-nav .nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; padding: 16px 32px; max-width: 1040px; margin: 0 auto;
}
.logo { font-family: 'IBM Plex Mono', monospace; font-size: 14px; font-weight: 500; color: var(--ink); }
.logo .tld { color: var(--accent); }
.nav-links { display: flex; flex-wrap: wrap; gap: 12px 28px; font-size: 14px; font-weight: 500; }
.nav-links a { color: #4A4E4C; }
.nav-links a:hover { color: var(--accent); }
.nav-tag { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--muted); letter-spacing: 0.08em; }

/* ---------- Hero ---------- */
.hero { padding-top: 88px; padding-bottom: 72px; }
.hero-row { display: flex; gap: 56px; align-items: center; flex-wrap: wrap; }
.hero-text { flex: 1 1 480px; display: flex; flex-direction: column; gap: 20px; }
.kicker { font-family: 'IBM Plex Mono', monospace; font-size: 13px; color: var(--accent); letter-spacing: 0.08em; }
.hero h1 { margin: 0; font-size: clamp(40px, 6vw, 64px); font-weight: 700; line-height: 1.05; letter-spacing: -0.02em; }
.hero .lede { margin: 0; font-size: 19px; line-height: 1.55; color: var(--body); max-width: 560px; }
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 8px; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 18px; border-radius: 6px; font-size: 14px; font-weight: 500; }
.btn-primary { background: var(--ink); color: var(--bg); }
.btn-primary:hover { background: var(--accent); color: var(--bg); }
.btn-outline { border: 1px solid #C9C9C2; color: var(--ink); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.hero-photo img {
  width: 232px; height: 232px; object-fit: cover; object-position: 50% 20%;
  border-radius: 12px; border: 1px solid var(--line);
  box-shadow: 0 12px 32px rgba(26, 29, 28, 0.1); display: block;
}

/* ---------- About strip ---------- */
.about-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--strip); }
.about-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 40px; padding: 48px 32px; max-width: 1040px; margin: 0 auto;
}
.about-col { display: flex; flex-direction: column; gap: 10px; }
.label { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--muted); letter-spacing: 0.08em; }
.about-col p { margin: 0; font-size: 15px; line-height: 1.6; color: var(--body); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-family: 'IBM Plex Mono', monospace; font-size: 12px; padding: 5px 10px;
  background: var(--bg); border: 1px solid #DDDDD6; border-radius: 4px; color: var(--body);
}
.chip-progress { border-style: dashed; color: var(--muted); }

/* ---------- Sections ---------- */
.section { padding-top: 80px; padding-bottom: 40px; }
.section + .section { padding-top: 64px; }
.section-head { display: flex; flex-direction: column; gap: 8px; margin-bottom: 36px; }
.section-head h2 { margin: 0; font-size: 32px; font-weight: 700; letter-spacing: -0.01em; }
.section-head .sub { margin: 4px 0 0; font-size: 15px; color: var(--muted); }

/* ---------- Projects ---------- */
/* ---------- Projects: horizontal scroller ---------- */
#projects .cards {
  display: flex; overflow-x: auto; scroll-snap-type: x mandatory;
  gap: 20px; scroll-behavior: smooth; padding-bottom: 8px;
  scrollbar-width: thin; scrollbar-color: #C9C9C2 transparent;
}
#projects .card { flex: 0 0 calc((100% - 40px) / 3); scroll-snap-align: start; }
@media (max-width: 900px) { #projects .card { flex-basis: calc((100% - 20px) / 2); } }
@media (max-width: 600px) { #projects .card { flex-basis: 100%; } }
.scroll-btns { display: flex; gap: 8px; margin-left: auto; }
.scroll-btn {
  width: 38px; height: 38px; border-radius: 50%; border: 1px solid #C9C9C2;
  background: var(--bg); color: var(--ink); font-size: 16px; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.scroll-btn:hover { border-color: var(--accent); color: var(--accent); }
.scroll-btn:disabled { opacity: 0.35; cursor: default; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 20px; }
.card {
  display: flex; flex-direction: column; gap: 14px; padding: 26px;
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.card:hover { border-color: var(--accent); box-shadow: 0 8px 24px rgba(26, 29, 28, 0.08); }
.card .repo { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--muted); }
.card-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.topics { display: flex; gap: 6px; }
.topic {
  font-family: 'IBM Plex Mono', monospace; font-size: 10.5px; letter-spacing: 0.04em;
  padding: 3px 8px; border: 1px solid var(--accent); border-radius: 99px; color: var(--accent);
}
.card h3 { margin: 0; font-size: 20px; font-weight: 600; line-height: 1.3; }
.card p { margin: 0; font-size: 14.5px; line-height: 1.6; color: #4A4E4C; flex: 1; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  font-family: 'IBM Plex Mono', monospace; font-size: 11px; padding: 4px 8px;
  background: var(--strip); border-radius: 3px; color: var(--muted);
}
.card-links { display: flex; gap: 18px; align-items: center; border-top: 1px solid var(--line-soft); padding-top: 14px; font-size: 13.5px; font-weight: 500; }
.more-note { margin: 24px 0 0; font-size: 14px; color: var(--muted); }
.empty-note { margin: 8px 0 0; font-size: 14.5px; color: var(--muted); font-family: 'IBM Plex Mono', monospace; }

/* ---------- Topic filter ---------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin: -12px 0 28px; }
.fchip {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: 'IBM Plex Mono', monospace; font-size: 12.5px;
  padding: 8px 14px; border: 1px solid #C9C9C2; border-radius: 99px;
  background: var(--bg); color: var(--body); cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}
.fchip:hover { border-color: var(--accent); color: var(--accent); }
.fchip.active { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.card.filtered-out { display: none; }

/* ---------- Experience ---------- */
.role {
  display: grid; grid-template-columns: 130px 1fr; gap: 24px;
  padding: 22px 0; border-top: 1px solid var(--line);
}
.role .years { font-family: 'IBM Plex Mono', monospace; font-size: 13px; color: var(--muted); padding-top: 2px; }
.role-body { display: flex; flex-direction: column; gap: 6px; }
.role-title { display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap; }
.role-title .t { font-size: 17px; font-weight: 600; }
.role-title .org { font-size: 14px; color: var(--accent); font-weight: 500; }
.role p { margin: 0; font-size: 14.5px; line-height: 1.6; color: #4A4E4C; max-width: 640px; }

/* ---------- Research + publications ---------- */
.research-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.r-card {
  padding: 26px; border: 1px solid var(--line); border-radius: 10px;
  background: var(--card); display: flex; flex-direction: column; gap: 10px;
}
.r-card h3 { margin: 0; font-size: 18px; font-weight: 600; line-height: 1.35; }
.r-card p { margin: 0; font-size: 14.5px; line-height: 1.6; color: #4A4E4C; }
.pubs { margin-top: 40px; }
.pubs .label { margin-bottom: 12px; display: block; }
.pub-row {
  display: grid; grid-template-columns: 1fr auto; gap: 16px; align-items: baseline;
  padding: 14px 0; border-top: 1px solid var(--line); color: var(--ink);
}
.pub-row:hover { color: var(--accent); }
.pub-row .pt { font-size: 15.5px; font-weight: 500; line-height: 1.45; }
.pub-row .venue { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--muted); }

/* ---------- Writing ---------- */
.writing { border-top: 1px solid var(--line); background: var(--strip); }
.writing .inner { padding: 72px 32px 80px; max-width: 1040px; margin: 0 auto; }
.post-row {
  display: grid; grid-template-columns: 120px 1fr; gap: 24px;
  padding: 22px 0; border-top: 1px solid #DDDDD6; color: var(--ink);
}
.post-row:hover { color: var(--accent); }
.post-row .date { font-family: 'IBM Plex Mono', monospace; font-size: 13px; color: var(--muted); padding-top: 3px; }
.post-row .pb { display: flex; flex-direction: column; gap: 6px; }
.post-row .pt { font-size: 19px; font-weight: 600; line-height: 1.35; }
.post-row .blurb { font-size: 14.5px; line-height: 1.6; color: #4A4E4C; }

/* ---------- Footer ---------- */
.site-footer { margin-top: 40px; background: var(--ink); color: var(--bg); }
.site-footer .inner {
  max-width: 1040px; margin: 0 auto; padding: 72px 32px;
  display: flex; flex-direction: column; gap: 28px;
}
.site-footer .kicker { color: var(--accent-light); }
.site-footer h2 {
  margin: 0; font-size: clamp(28px, 4vw, 44px); font-weight: 700;
  letter-spacing: -0.01em; max-width: 640px; line-height: 1.15;
}
.footer-links { display: flex; gap: 24px; flex-wrap: wrap; font-size: 15px; }
.footer-links a { display: inline-flex; align-items: center; gap: 9px; color: var(--bg); border-bottom: 1px solid var(--accent-light); padding-bottom: 3px; }
.footer-links .icon { flex: 0 0 auto; color: var(--accent-light); }
.footer-links a:hover { color: var(--accent-light); }
.copyright { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--muted); margin-top: 16px; }

/* ============================================
   Article pages (case study + posts)
   ============================================ */
.article { max-width: 860px; margin: 0 auto; padding: 72px 32px 96px; display: flex; flex-direction: column; gap: 56px; }
.article.narrow { max-width: 720px; gap: 32px; }
.article-header { display: flex; flex-direction: column; gap: 18px; }
.article-header h1 { margin: 0; font-size: clamp(34px, 5vw, 52px); font-weight: 700; line-height: 1.1; letter-spacing: -0.02em; }
.article.narrow .article-header h1 { font-size: clamp(30px, 4.5vw, 44px); line-height: 1.15; }
.article-header .lede { margin: 0; font-size: 18px; line-height: 1.6; color: var(--body); max-width: 640px; }
.meta-row { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; font-family: 'IBM Plex Mono', monospace; font-size: 13px; color: var(--muted); }
.meta-row .cat { color: var(--accent); }
.stack-pill {
  display: inline-flex; align-items: center; font-family: 'IBM Plex Mono', monospace;
  font-size: 12px; padding: 9px 12px; border: 1px solid #DDDDD6; border-radius: 6px; color: var(--muted);
}
.article section { display: flex; flex-direction: column; gap: 14px; }
.article h2 { margin: 0; font-size: 24px; font-weight: 700; }
.article p { margin: 0; font-size: 16px; line-height: 1.7; color: var(--body); }
.article.narrow p { font-size: 16.5px; line-height: 1.75; color: #2C302E; }

.step-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.step {
  padding: 22px; background: var(--card); border: 1px solid var(--line);
  border-radius: 10px; display: flex; flex-direction: column; gap: 8px;
}
.step .n { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--accent); }
.step .t { font-size: 16px; font-weight: 600; }
.step p { font-size: 14px; line-height: 1.6; color: #4A4E4C; }

.fig-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; }
.figure { display: flex; flex-direction: column; gap: 8px; }
.figure img { width: 100%; border-radius: 10px; border: 1px solid var(--line); display: block; }
.figure .placeholder {
  width: 100%; height: 300px; border-radius: 10px; border: 1px dashed #C9C9C2;
  background: repeating-linear-gradient(45deg, var(--strip), var(--strip) 12px, #EDEDE7 12px, #EDEDE7 24px);
  display: flex; align-items: center; justify-content: center;
  font-family: 'IBM Plex Mono', monospace; font-size: 13px; color: var(--muted); text-align: center; padding: 16px;
}
.figcap { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--muted); }

.callout {
  padding: 28px; background: var(--strip); border: 1px solid var(--line);
  border-radius: 10px; display: flex; flex-direction: column; gap: 12px;
}
pre.code {
  margin: 8px 0; padding: 20px 24px; background: var(--ink); color: #E8E8E2;
  border-radius: 10px; overflow-x: auto;
  font-family: 'IBM Plex Mono', monospace; font-size: 13.5px; line-height: 1.7;
}
pre.code code { font-family: inherit; }

.chart-card { padding: 24px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; display: flex; flex-direction: column; gap: 16px; }
.bars { display: flex; flex-direction: column; gap: 10px; }
.bar-row { display: grid; grid-template-columns: 170px 1fr 56px; gap: 12px; align-items: center; }
.bar-row .bl { font-size: 13.5px; color: var(--body); }
.bar-track { height: 18px; background: var(--strip); border-radius: 3px; overflow: hidden; }
.bar-fill { height: 100%; }
.bar-row .bv { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--muted); }
.chart-note { font-family: 'IBM Plex Mono', monospace; font-size: 11.5px; color: #9A9E9C; }

.article-footer {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  flex-wrap: wrap; border-top: 1px solid var(--line); padding-top: 28px;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 760px) {
  .container, .site-nav .nav-inner, .about-grid, .writing .inner, .site-footer .inner { padding-left: 20px; padding-right: 20px; }
  .article { padding: 48px 20px 72px; gap: 40px; }
  .hero { padding-top: 56px; padding-bottom: 48px; }
  .hero-row { gap: 32px; }
  .hero-photo { order: -1; }
  .hero-photo img { width: 160px; height: 160px; }
  .section { padding-top: 56px; padding-bottom: 24px; }
  .section + .section { padding-top: 48px; }
  .section-head h2 { font-size: 26px; }
  .role, .post-row { grid-template-columns: 1fr; gap: 6px; }
  .role .years, .post-row .date { padding-top: 0; }
  .pub-row { grid-template-columns: 1fr; gap: 4px; }
  .bar-row { grid-template-columns: 1fr; gap: 4px; }
  .bar-row .bv { text-align: left; }
  .nav-links { gap: 10px 18px; font-size: 13px; }
  .site-footer .inner { padding-top: 56px; padding-bottom: 56px; }
}
@media (max-width: 420px) {
  .hero h1 { font-size: 36px; }
  .btn { padding: 10px 14px; font-size: 13px; }
}