/* Christian Colón — personal site
   Self-contained: all fonts local, no external requests. */

/* ---------- Fonts (self-hosted, SIL OFL) ---------- */
@font-face {
  font-family: "Inter Variable";
  src: url("fonts/inter-latin-wght-normal.woff2") format("woff2-variations");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Space Grotesk Variable";
  src: url("fonts/space-grotesk-latin-wght-normal.woff2") format("woff2-variations");
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono Variable";
  src: url("fonts/jetbrains-mono-latin-wght-normal.woff2") format("woff2-variations");
  font-weight: 100 800;
  font-style: normal;
  font-display: swap;
}

/* ---------- Tokens ---------- */
:root {
  --bg: #0b1120;
  --surface: #121b30;
  --border: rgba(163, 176, 198, 0.16);
  --text: #e8edf7;
  --muted: #a9b5ca;
  --accent: #7aa7ff;
  --accent-strong: #a5c2ff;
  --sans: "Inter Variable", Arial, Helvetica, sans-serif;
  --display: "Space Grotesk Variable", "Inter Variable", Arial, sans-serif;
  --mono: "JetBrains Mono Variable", "SF Mono", Consolas, monospace;
  --measure: 68ch;
}

/* ---------- Reset-ish ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* ---------- Accessibility ---------- */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -3.5rem;
  z-index: 10;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #0b1120;
  border-radius: 4px;
  font-weight: 600;
  text-decoration: none;
  transition: top 0.15s ease;
}
.skip-link:focus { top: 1rem; }
:focus-visible {
  outline: 2px solid var(--accent-strong);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- Links ---------- */
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent-strong); }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(11, 17, 32, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.site-header .bar {
  max-width: 1060px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text);
  text-decoration: none;
}
.wordmark .tld { color: var(--accent); }
.wordmark .logo { height: 1.05rem; width: auto; display: block; }
.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1.4rem;
  flex-wrap: wrap;
}
.site-nav a {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--muted);
  text-decoration: none;
}
.site-nav a:hover { color: var(--accent-strong); }

/* ---------- Layout ---------- */
main {
  max-width: 1060px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
section { padding: 4.5rem 0 1rem; }

/* ---------- Hero ---------- */
.hero {
  padding: 6.5rem 0 3.5rem;
  position: relative;
}
.hero::before {
  content: "";
  position: absolute;
  inset: -8rem -20rem auto -20rem;
  height: 30rem;
  background: radial-gradient(42rem 22rem at 30% 20%, rgba(122, 167, 255, 0.13), transparent 70%);
  pointer-events: none;
}
.eyebrow {
  font-family: var(--mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin: 0 0 1rem;
}
.hero h1 {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(2.6rem, 7vw, 4.4rem);
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0 0 1rem;
}
.role {
  font-family: var(--display);
  font-size: clamp(1.15rem, 2.6vw, 1.5rem);
  font-weight: 500;
  color: var(--accent-strong);
  margin: 0 0 1.5rem;
}
.lede {
  max-width: var(--measure);
  font-size: 1.15rem;
  color: var(--muted);
  margin: 0;
}

/* ---------- Section headers ---------- */
.section-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.75rem;
  margin-bottom: 2rem;
}
.section-head .index {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--accent);
}
.section-head h2 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.6rem;
  letter-spacing: -0.01em;
  margin: 0;
}

/* ---------- Prose ---------- */
.prose p { max-width: var(--measure); margin: 0 0 1.2rem; }
.prose .certline {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
}

/* ---------- Focus cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem 1.4rem;
}
.card h3 {
  font-family: var(--display);
  font-size: 1.15rem;
  font-weight: 600;
  margin: 0 0 0.6rem;
}
.card p { margin: 0; font-size: 0.98rem; color: var(--muted); }
@media (max-width: 860px) {
  .cards { grid-template-columns: 1fr; }
}

/* ---------- Experience ---------- */
.job {
  border-left: 2px solid var(--border);
  padding: 0 0 2.4rem 1.6rem;
  position: relative;
}
.job::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 0.5em;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
}
.job:last-of-type { padding-bottom: 0.5rem; }
.job h3 {
  font-family: var(--display);
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0;
}
.job .org { color: var(--muted); font-weight: 400; }
.job .dates {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--accent);
  display: block;
  margin: 0.3rem 0 0.9rem;
}
.job p.summary { color: var(--muted); max-width: var(--measure); margin: 0; }
.experience-note {
  color: var(--muted);
  font-size: 0.9rem;
  max-width: var(--measure);
  margin: 0.5rem 0 0;
}

/* ---------- Credentials ---------- */
.creds {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}
.creds li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.2rem 1.4rem;
}
.creds .cred-name {
  display: block;
  font-family: var(--display);
  font-weight: 600;
  margin-bottom: 0.3rem;
}
.creds .cred-note { color: var(--muted); font-size: 0.95rem; }
@media (max-width: 700px) {
  .creds { grid-template-columns: 1fr; }
}

/* ---------- Contact ---------- */
.contact { padding-bottom: 3rem; }
.contact .prose p { font-size: 1.1rem; }
.contact-links {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.contact-links a {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.9rem;
  padding: 0.7rem 1.2rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  text-decoration: none;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.contact-links a:hover { border-color: var(--accent); }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 3rem;
}
.site-footer .bar {
  max-width: 1060px;
  margin: 0 auto;
  padding: 1.4rem 1.5rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
}

/* ---------- Print ---------- */
@media print {
  body { background: #fff; color: #111; }
  .site-header, .skip-link, .site-footer { display: none; }
  a { color: #1f4e8c; }
}