/* Site styles: kept in a separate file so the Content-Security-Policy
   can block inline styles (no 'unsafe-inline'). */
:root {
  --bg: #0b0f14;
  --bg-2: #10161d;
  --card: #131b24;
  --line: #223040;
  --text: #e6edf3;
  --muted: #8b9bab;
  --accent: #3ddc97;
  --accent-2: #4cc2ff;
  --warn: #ffb547;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --radius: 12px;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f8fa;
    --bg-2: #eef2f6;
    --card: #ffffff;
    --line: #d8e0e8;
    --text: #0f1720;
    --muted: #56657a;
    --accent: #0f9d63;
    --accent-2: #0b74c4;
    --warn: #b56d00;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 980px; margin: 0 auto; padding: 0 20px; }

/* Nav */
nav {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.brand { font-family: var(--mono); font-weight: 600; color: var(--text); }
.brand span { color: var(--accent); }
nav ul { list-style: none; display: flex; gap: 22px; margin: 0; padding: 0; }
nav ul a { color: var(--muted); font-size: 14px; }
nav ul a:hover { color: var(--text); text-decoration: none; }
@media (max-width: 640px) { nav ul { display: none; } }

/* Hero */
header.hero { padding: 80px 0 48px; }
.prompt { font-family: var(--mono); color: var(--accent); font-size: 14px; margin-bottom: 14px; }
.prompt .cursor { display: inline-block; width: 8px; height: 16px; background: var(--accent); vertical-align: -2px; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .prompt .cursor { animation: none; } }
h1 { font-size: clamp(36px, 6vw, 56px); line-height: 1.1; margin: 0 0 12px; letter-spacing: -0.02em; }
.role { font-size: clamp(18px, 2.6vw, 22px); color: var(--muted); margin: 0 0 20px; }
.role strong { color: var(--text); font-weight: 600; }
.summary { max-width: 680px; font-size: 17px; margin: 0 0 24px; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
.tag {
  font-family: var(--mono); font-size: 12.5px;
  padding: 4px 10px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--bg-2); color: var(--muted);
}
.tag.ok { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); }
.buttons { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px; border-radius: 8px; font-weight: 600; font-size: 15px;
  border: 1px solid var(--line); color: var(--text); background: var(--card);
}
.btn:hover { text-decoration: none; border-color: var(--accent); }
.btn.primary { background: var(--accent); color: #06130d; border-color: var(--accent); }
.btn.primary:hover { filter: brightness(1.08); }
.btn svg { width: 18px; height: 18px; }

/* Metrics */
.metrics {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  margin: 8px 0 72px;
}
.metric { background: var(--card); padding: 22px 20px; }
.metric .num { font-family: var(--mono); font-size: 28px; font-weight: 600; color: var(--accent); line-height: 1.1; }
.metric .lbl { font-size: 13.5px; color: var(--muted); margin-top: 6px; }
@media (max-width: 760px) { .metrics { grid-template-columns: repeat(2, 1fr); } }

/* Sections */
section { padding: 0 0 72px; }
.sec-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 24px; }
.sec-head .idx { font-family: var(--mono); color: var(--accent); font-size: 14px; }
h2 { font-size: 26px; margin: 0; letter-spacing: -0.01em; }

/* Projects */
.projects { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
@media (max-width: 760px) { .projects { grid-template-columns: 1fr; } }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; display: flex; flex-direction: column;
  transition: border-color .15s, transform .15s;
}
.card:hover { border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); transform: translateY(-2px); }
@media (prefers-reduced-motion: reduce) { .card:hover { transform: none; } }
.card .kicker { font-family: var(--mono); font-size: 12px; color: var(--accent-2); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 6px; }
.card h3 { margin: 0 0 10px; font-size: 19px; }
.card p { margin: 0 0 12px; color: var(--muted); font-size: 15px; }
.card ul { margin: 0 0 16px; padding-left: 18px; font-size: 14.5px; }
.card li { margin-bottom: 6px; }
.card li b { color: var(--accent); font-weight: 600; }
.card .stack { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; padding-top: 6px; }
.card .stack span { font-family: var(--mono); font-size: 11.5px; color: var(--muted); background: var(--bg-2); border: 1px solid var(--line); padding: 2px 8px; border-radius: 6px; }
.card .links { margin-top: 14px; font-family: var(--mono); font-size: 13.5px; display: flex; gap: 16px; }

/* Experience */
.timeline { border-left: 2px solid var(--line); margin-left: 6px; }
.job { position: relative; padding: 0 0 30px 26px; }
.job::before {
  content: ""; position: absolute; left: -7px; top: 6px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--accent);
}
.job.past::before { border-color: var(--muted); }
.job-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 4px 16px; }
.job h3 { margin: 0; font-size: 18px; }
.job .org { color: var(--muted); font-weight: 500; }
.job .when { font-family: var(--mono); font-size: 13px; color: var(--muted); }
.job ul { margin: 10px 0 0; padding-left: 18px; font-size: 15px; }
.job li { margin-bottom: 5px; }
.job p { margin: 8px 0 0; font-size: 15px; color: var(--muted); }

/* Skills */
.skills { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
@media (max-width: 760px) { .skills { grid-template-columns: 1fr; } }
.skill-group { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.skill-group h3 { margin: 0 0 12px; font-size: 15px; font-family: var(--mono); color: var(--accent); font-weight: 600; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chips span { font-size: 13.5px; padding: 4px 10px; border-radius: 6px; background: var(--bg-2); border: 1px solid var(--line); }

/* Certs */
.certs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 760px) { .certs { grid-template-columns: 1fr; } }
.cert { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.cert .k { font-family: var(--mono); font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
.cert h3 { margin: 6px 0 4px; font-size: 17px; }
.cert p { margin: 0; color: var(--muted); font-size: 14px; }

/* Writing */
.posts { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.posts li { border-bottom: 1px solid var(--line); }
.posts a { display: flex; justify-content: space-between; gap: 16px; padding: 16px 4px; color: var(--text); }
.posts a:hover { text-decoration: none; color: var(--accent); }
.posts .t { font-weight: 600; }
.posts .d { color: var(--muted); font-size: 14px; display: block; font-weight: 400; margin-top: 2px; }
.posts .arrow { font-family: var(--mono); color: var(--muted); flex-shrink: 0; }
.more { margin-top: 14px; font-family: var(--mono); font-size: 14px; }

/* Contact / footer */
.contact {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px; text-align: center;
}
.contact h2 { margin-bottom: 8px; }
.contact p { color: var(--muted); margin: 0 auto 20px; max-width: 520px; }
.contact .buttons { justify-content: center; }
footer { border-top: 1px solid var(--line); padding: 28px 0 40px; margin-top: 8px; }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-size: 13.5px; color: var(--muted); }
footer code { font-family: var(--mono); font-size: 12.5px; color: var(--accent); }

/* 404 page */
.notfound { font-family: system-ui, sans-serif; text-align: center; margin-top: 80px; }