:root {
  --bg: #fbfaf8;
  --surface: #ffffff;
  --text: #1c1d21;
  --muted: #62666f;
  --line: #e6e3de;
  --accent: #1f5fbf;
  --accent-soft: #e8f0fc;
  --radius: 14px;
  --max: 760px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #131417;
    --surface: #1b1c21;
    --text: #ececef;
    --muted: #a0a4ae;
    --line: #2b2d34;
    --accent: #7aa9f0;
    --accent-soft: #1d2638;
  }
}
:root[data-theme="dark"] {
  --bg: #131417;
  --surface: #1b1c21;
  --text: #ececef;
  --muted: #a0a4ae;
  --line: #2b2d34;
  --accent: #7aa9f0;
  --accent-soft: #1d2638;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.2; letter-spacing: -0.01em; margin: 0 0 .5em; }
h1 { font-size: clamp(2rem, 6vw, 2.8rem); }
h2 { font-size: 1.35rem; margin-top: 2.2em; }
h3 { font-size: 1.05rem; }
p { margin: 0 0 1em; }

/* bilingual: show only the active language */
html[lang="es"] [lang="en"],
html[lang="en"] [lang="es"] { display: none !important; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

header.site {
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  position: sticky; top: 0; z-index: 10;
}
header.site .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; min-height: 60px; flex-wrap: wrap;
}
.brand { font-weight: 650; color: var(--text); }
nav.main { display: flex; gap: 4px; flex-wrap: wrap; align-items: center; }
nav.main a {
  color: var(--muted); padding: 6px 12px; border-radius: 999px; font-size: .95rem;
}
nav.main a:hover { color: var(--text); text-decoration: none; background: var(--accent-soft); }
nav.main a[aria-current="page"] { color: var(--accent); background: var(--accent-soft); }
.lang-toggle {
  border: 1px solid var(--line); background: var(--surface); color: var(--text);
  border-radius: 999px; padding: 4px 12px; font: inherit; font-size: .85rem; cursor: pointer;
}
.lang-toggle:hover { border-color: var(--accent); }

main { padding: 48px 0 72px; }

.hero { display: flex; gap: 28px; align-items: center; margin-bottom: 8px; }
.avatar {
  flex: none; width: 132px; height: 132px; border-radius: 50%;
  object-fit: cover; background: var(--accent-soft); color: var(--accent);
  display: grid; place-items: center; font-size: 2.6rem; font-weight: 700;
  border: 1px solid var(--line);
}
.lead { font-size: 1.15rem; color: var(--muted); margin: 0 0 1em; }
@media (max-width: 560px) { .hero { flex-direction: column; align-items: flex-start; } }

.links { display: flex; gap: 10px; flex-wrap: wrap; margin: 24px 0 0; }
.btn {
  display: inline-block; padding: 9px 18px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--surface); color: var(--text); font-size: .95rem;
}
.btn:hover { border-color: var(--accent); text-decoration: none; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--bg); }

.cards { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); margin-top: 16px; }
.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px 20px;
}
.card h3 { margin-bottom: .3em; }
.card p { margin: 0; color: var(--muted); font-size: .95rem; }
a.card { color: inherit; display: block; }
a.card:hover { border-color: var(--accent); text-decoration: none; }

.timeline { list-style: none; padding: 0; margin: 16px 0 0; border-left: 2px solid var(--line); }
.timeline li { padding: 0 0 18px 20px; position: relative; }
.timeline li::before {
  content: ""; position: absolute; left: -6px; top: 9px; width: 10px; height: 10px;
  border-radius: 50%; background: var(--accent);
}
.timeline strong { display: block; }
.timeline span.meta { color: var(--muted); font-size: .92rem; }

ul.plain { padding-left: 1.1em; margin: 8px 0 0; }
ul.plain li { margin-bottom: .4em; }
.tag {
  display: inline-block; font-size: .78rem; color: var(--accent); background: var(--accent-soft);
  padding: 2px 10px; border-radius: 999px; margin: 0 6px 6px 0;
}

footer.site { border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; padding: 24px 0; }

.timeline li p { margin: 4px 0 0; color: var(--muted); font-size: .95rem; }

/* icons: monochrome masks that follow the text colour */
.ico { display:inline-block; width:1.15em; height:1.15em; background:currentColor; vertical-align:-.2em;
  -webkit-mask: var(--m) center/contain no-repeat; mask: var(--m) center/contain no-repeat; }
.i-linkedin { --m:url(icons/linkedin.svg) } .i-github { --m:url(icons/github.svg) }
.i-facebook { --m:url(icons/facebook.svg) } .i-x { --m:url(icons/x.svg) } .i-mail { --m:url(icons/mail.svg) }
.i-work { --m:url(icons/work.svg) } .i-code { --m:url(icons/code.svg) } .i-school { --m:url(icons/school.svg) }
.i-verified { --m:url(icons/verified.svg) } .i-event { --m:url(icons/event.svg) } .i-scout { --m:url(icons/scout.svg) }
.i-cube { --m:url(icons/cube.svg) } .i-book { --m:url(icons/book.svg) } .i-link { --m:url(icons/link.svg) }
.btn .ico { margin-right: 8px; }
.card .ico { width: 28px; height: 28px; color: var(--accent); margin-bottom: 10px; display:block; }
.hero .links { margin-top: 18px; }
.card.featured { border-color: var(--accent); background: var(--accent-soft); }
.card.featured h3 { font-size: 1.2rem; }
.projects-sec { margin-top: 1.6em; }

.social { display:flex; gap:10px; flex-wrap:wrap; margin-bottom:12px; }
.soc { display:inline-flex; align-items:center; gap:4px; width:auto; min-width:40px; height:40px; justify-content:center;
  padding:0 10px; border:1px solid var(--line); border-radius:999px; color:var(--muted); background:var(--surface); }
.soc:hover { color:var(--accent); border-color:var(--accent); text-decoration:none; }
.soc small { font-size:.7rem; font-weight:600; }

.crumb { margin-bottom: 8px; font-size: .95rem; }
a.joblink { display:block; color:inherit; padding:2px 0; }
a.joblink:hover { text-decoration:none; }
a.joblink:hover strong { color: var(--accent); }
.more { display:block; font-size:.85rem; color:var(--accent); }
.timeline li .meta { display:block; }

.gallery { display:grid; gap:16px; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); margin-top:12px; }
.gallery figure { margin:0; }
.gallery img { width:100%; height:auto; border-radius:var(--radius); border:1px solid var(--line); display:block; }
.gallery figcaption { color:var(--muted); font-size:.9rem; margin-top:6px; }

details.cert { background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); padding:10px 16px; margin:10px 0; }
details.cert summary { cursor:pointer; font-weight:600; }
details.cert p { margin:10px 0 2px; }

nav.main a { padding: 6px 10px; font-size: .9rem; }
header.site .wrap { padding-top: 8px; padding-bottom: 8px; }

blockquote { margin: 1.4em 0; padding: 4px 0 4px 18px; border-left: 3px solid var(--accent); font-size: 1.12rem; }
blockquote cite { display: block; margin-top: 6px; color: var(--muted); font-size: .9rem; font-style: normal; }

.meta-line { color: var(--muted); margin: -.2em 0 .6em; font-size: .95rem; }

/* Blog */
.post figure { margin: 1.2em 0; }
.post img { max-width: 100%; height: auto; border-radius: var(--radius); border: 1px solid var(--line); display: block; }
.post .gallery { margin: 1.2em 0; }
.post .gallery figure { margin: 0; }
.post blockquote { font-size: 1rem; color: var(--muted); }
.post blockquote p { margin: 0 0 .6em; }
.post h2 { margin-top: 1.4em; }