:root {
  /* ---- palette: "telemetry console" ---- */
  --ink:      #0A0F14;   /* page background */
  --ink-2:    #0C131A;   /* subtle gradient stop */
  --carbon:   #111923;   /* card surface */
  --carbon-2: #0E151D;   /* raised-but-recessed surface */
  --hairline: #1E2A36;   /* borders / dividers */
  --hairline-2:#27384a;  /* brighter border on hover */
  --mist:     #7E92A6;   /* muted text */
  --mist-dim: #56697c;   /* faintest text */
  --bone:     #DCE6F0;   /* primary text */
  --bone-2:   #F2F6FB;   /* brightest text */
  --signal:   #34E2C4;   /* the one accent: fiber teal */
  --signal-d: #1ba48d;   /* deeper teal */
  --signal-glow: rgba(52, 226, 196, 0.14);

  --rail-w: 340px;
  --max-w: 1180px;

  --f-display: 'Space Grotesk', system-ui, sans-serif;
  --f-body: 'IBM Plex Sans', system-ui, sans-serif;
  --f-mono: 'IBM Plex Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--f-body);
  color: var(--bone);
  background:
    radial-gradient(1200px 700px at 80% -10%, rgba(52,226,196,0.05), transparent 60%),
    linear-gradient(180deg, var(--ink-2), var(--ink) 40%);
  background-attachment: fixed;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

/* signature element: slow topology mesh, sits behind everything */
#mesh {
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.55;
  pointer-events: none;
}

a { color: var(--signal); text-decoration: none; }
a:hover { color: var(--bone-2); }

::selection { background: var(--signal-glow); color: var(--bone-2); }

/* ---------- shell ---------- */
.shell {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 28px;
  display: grid;
  grid-template-columns: var(--rail-w) 1fr;
  gap: 56px;
  align-items: start;
}

/* ---------- left rail (identity) ---------- */
.rail {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 56px 0 40px;
  display: flex;
  flex-direction: column;
}

.avatar {
  width: 88px; height: 88px;
  margin-bottom: 26px;
}
.avatar svg { display: block; width: 100%; height: 100%; }
/* used if you swap the monogram for a real photo (see EDIT PHOTO in index.html) */
.avatar-img {
  width: 100%; height: 100%;
  border-radius: 14px;
  object-fit: cover;
  border: 1px solid var(--signal-d);
}

.name {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 30px;
  letter-spacing: -0.02em;
  color: var(--bone-2);
  margin: 0 0 6px;
  line-height: 1.1;
}
.role {
  font-family: var(--f-mono);
  font-size: 13px;
  color: var(--signal);
  letter-spacing: 0.02em;
  margin: 0 0 22px;
}
.tagline {
  font-family: var(--f-display);
  font-size: 16px;
  color: var(--bone);
  margin: 0 0 24px;
  line-height: 1.4;
}
.subtag {
  font-size: 13.5px;
  color: var(--mist);
  margin: 0 0 24px;
  max-width: 30ch;
}

/* live status readout */
.status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--mist);
  padding: 7px 12px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  background: var(--carbon-2);
  margin-bottom: 28px;
  align-self: flex-start;
}
.dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 0 var(--signal-glow);
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(52,226,196,0.45); }
  70%  { box-shadow: 0 0 0 7px rgba(52,226,196,0); }
  100% { box-shadow: 0 0 0 0 rgba(52,226,196,0); }
}

/* social row */
.socials { display: flex; gap: 10px; margin-bottom: 38px; }
.socials a {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border: 1px solid var(--hairline);
  border-radius: 9px;
  color: var(--mist);
  background: var(--carbon-2);
  transition: border-color .18s, color .18s, transform .18s;
}
.socials a:hover {
  color: var(--signal);
  border-color: var(--signal-d);
  transform: translateY(-2px);
}
.socials svg { width: 17px; height: 17px; }

/* nav */
nav { margin-top: auto; display: flex; flex-direction: column; gap: 2px; }
.nav-btn {
  appearance: none;
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--mist);
  padding: 9px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: color .16s;
}
.nav-btn .tick {
  width: 18px; height: 1px; background: var(--hairline-2);
  transition: width .2s ease, background .16s;
}
.nav-btn:hover { color: var(--bone); }
.nav-btn:hover .tick { width: 30px; background: var(--mist); }
.nav-btn[aria-current="true"] { color: var(--signal); }
.nav-btn[aria-current="true"] .tick { width: 34px; background: var(--signal); }
.nav-btn[aria-current="true"]:hover .tick { background: var(--signal); }
.nav-btn:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; border-radius: 3px; }

/* ---------- right content ---------- */
.content { padding: 56px 0 96px; min-width: 0; }

.panel { display: none; animation: fade .4s ease both; }
.panel.active { display: block; }
@keyframes fade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.eyebrow {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--signal);
  margin: 0 0 18px;
}
.eyebrow::before { content: "// "; color: var(--signal-d); }

h2.head {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: clamp(26px, 4vw, 34px);
  letter-spacing: -0.02em;
  color: var(--bone-2);
  margin: 0 0 26px;
  line-height: 1.15;
}

p.lead { font-size: 16.5px; color: var(--bone); max-width: 60ch; margin: 0 0 18px; }
p.body { font-size: 15px; color: var(--mist); max-width: 62ch; margin: 0 0 18px; }
p.body strong, p.lead strong { color: var(--bone); font-weight: 600; }

.rule { height: 1px; background: var(--hairline); margin: 40px 0; border: none; }

.sublabel {
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mist-dim);
  margin: 0 0 18px;
}

/* capability cards (four domains) */
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
#capabilities .grid2 { margin-top: 26px; }
.card {
  border: 1px solid var(--hairline);
  background: linear-gradient(180deg, var(--carbon), var(--carbon-2));
  border-radius: 12px;
  padding: 22px 22px 24px;
  transition: border-color .2s, transform .2s;
}
.card:hover { border-color: var(--hairline-2); transform: translateY(-2px); }
.card .idx {
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--signal);
  margin-bottom: 10px;
}
.card h3 {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 17px;
  color: var(--bone-2);
  margin: 0 0 8px;
}
.card p { font-size: 13.5px; color: var(--mist); margin: 0 0 14px; }

/* mono tag pills */
.tags { display: flex; flex-wrap: wrap; gap: 7px; }
.tags-spaced { margin-top: 18px; }
.mt-block { margin-top: 22px; }
.offclock { font-size: 15px; color: var(--mist); max-width: 62ch; margin: 0; }
.tag {
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--mist);
  border: 1px solid var(--hairline);
  border-radius: 6px;
  padding: 4px 8px;
  transition: color .16s, border-color .16s;
}
.card:hover .tag { border-color: var(--hairline-2); }
.tag.hot { color: var(--signal); border-color: var(--signal-d); }

/* certifications */
.certs { display: flex; gap: 12px; flex-wrap: wrap; }
.cert {
  display: block;
  border: 1px solid var(--hairline);
  border-radius: 10px;
  padding: 14px 18px;
  background: var(--carbon-2);
  min-width: 150px;
  transition: border-color .2s, transform .2s;
}
a.cert:hover { border-color: var(--signal-d); transform: translateY(-2px); }
.cert .c-code { font-family: var(--f-display); font-weight: 600; font-size: 18px; color: var(--bone-2); }
.cert .c-full { font-size: 12px; color: var(--mist); font-family: var(--f-mono); margin-top: 3px; }

/* experience timeline */
.xp { display: grid; grid-template-columns: 130px 1fr; gap: 0 26px; }
.xp + .xp { margin-top: 4px; }
.xp-when {
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--mist-dim);
  letter-spacing: 0.04em;
  padding-top: 22px;
}
.xp-body {
  border-left: 1px solid var(--hairline);
  padding: 22px 0 22px 26px;
  position: relative;
}
.xp-body::before {
  content: ""; position: absolute; left: -4px; top: 28px;
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--ink); border: 1.5px solid var(--signal-d);
}
.xp:first-child .xp-body::before { border-color: var(--signal); background: var(--signal); }
.xp h4 { font-family: var(--f-display); font-weight: 600; font-size: 16px; color: var(--bone-2); margin: 0 0 4px; }
.xp .where { font-size: 13px; color: var(--signal); font-family: var(--f-mono); margin: 0 0 10px; }
.xp p { font-size: 14px; color: var(--mist); margin: 0 0 12px; max-width: 60ch; }

/* lab project blocks */
.proj {
  border: 1px solid var(--hairline);
  border-radius: 14px;
  overflow: hidden;
  background: linear-gradient(180deg, var(--carbon), var(--carbon-2));
  margin-bottom: 22px;
}
#projects .proj:first-of-type { margin-top: 24px; }
.proj-top {
  padding: 24px 26px 20px;
  border-bottom: 1px solid var(--hairline);
}
.proj-top .flag {
  font-family: var(--f-mono); font-size: 11.5px; letter-spacing: 0.06em;
  color: var(--signal); text-transform: uppercase; margin-bottom: 10px;
}
.proj-top h3 { font-family: var(--f-display); font-weight: 600; font-size: 21px; color: var(--bone-2); margin: 0 0 10px; line-height: 1.2; }
.proj-top p { font-size: 14.5px; color: var(--mist); margin: 0; max-width: 64ch; }
.proj-body { padding: 22px 26px 26px; }

.field { margin-bottom: 18px; }
.field .k {
  font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--mist-dim); margin-bottom: 7px;
}
.field p { font-size: 14px; color: var(--mist); margin: 0; max-width: 64ch; }
.field p strong { color: var(--bone); font-weight: 600; }

/* phased build = real sequence, so numbered markers are earned */
.phases { display: grid; gap: 10px; margin: 6px 0 4px; }
.phase {
  display: grid; grid-template-columns: 30px 1fr auto; align-items: center; gap: 14px;
  border: 1px solid var(--hairline); border-radius: 9px; padding: 12px 14px;
  background: var(--carbon-2);
}
.phase .n { font-family: var(--f-mono); font-size: 13px; color: var(--signal); }
.phase .t { font-size: 13.5px; color: var(--bone); }
.phase .s { font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.05em; text-transform: uppercase; }
.phase .s.done { color: var(--signal); }
.phase .s.wip  { color: var(--mist); }
.phase .s.wip::before { content: "● "; }
.phase .s.done::before { content: "✓ "; }

.btnrow { display: flex; gap: 10px; margin-top: 20px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--f-mono); font-size: 12.5px;
  padding: 10px 15px; border-radius: 8px;
  border: 1px solid var(--hairline); color: var(--bone);
  background: var(--carbon-2);
  transition: border-color .18s, color .18s, transform .18s;
}
.btn:hover { border-color: var(--signal-d); color: var(--signal); transform: translateY(-1px); }
.btn svg { width: 15px; height: 15px; }

/* contact */
.contact-line { font-family: var(--f-display); font-size: clamp(20px, 3vw, 26px); color: var(--bone-2); margin: 0 0 24px; max-width: 48ch; line-height: 1.3; }
.footnote { font-family: var(--f-mono); font-size: 12px; color: var(--mist-dim); margin-top: 36px; line-height: 1.7; }
.footnote .ok { color: var(--signal); }

/* ---------- responsive ---------- */
@media (max-width: 880px) {
  .shell { grid-template-columns: 1fr; gap: 0; padding: 0 22px; }
  .rail { position: static; height: auto; padding: 44px 0 28px; }
  nav {
    margin-top: 30px; flex-direction: row; flex-wrap: wrap; gap: 6px;
    border-top: 1px solid var(--hairline); padding-top: 22px;
  }
  .nav-btn { padding: 8px 0; }
  .nav-btn .tick { width: 12px; }
  .nav-btn[aria-current="true"] .tick { width: 20px; }
  .content { padding: 8px 0 72px; }
  .grid2 { grid-template-columns: 1fr; }
  .xp { grid-template-columns: 88px 1fr; gap: 0 16px; }
  .xp-when { padding-top: 22px; font-size: 11px; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto; }
  .dot { animation: none; }
  .panel { animation: none; }
}

/* ---------- identity block under the name ---------- */
.idblock {
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--bone);
  margin: 2px 0 16px;
  line-height: 1.85;
}
.idblock .idk {
  color: var(--mist-dim);
  letter-spacing: 0.06em;
  margin-right: 6px;
}

/* ---------- cert "verify on credly" line ---------- */
.c-verify {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--signal);
  margin-top: 12px;
  opacity: 0.8;
  transition: opacity .18s;
}
a.cert:hover .c-verify { opacity: 1; }

/* ---------- tech stack rows ---------- */
.stackrow {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 16px 24px;
  align-items: center;
  border: 1px solid var(--hairline);
  background: linear-gradient(180deg, var(--carbon), var(--carbon-2));
  border-radius: 12px;
  padding: 20px 24px;
  transition: border-color .2s;
}
.stackrow:hover { border-color: var(--hairline-2); }
.stackrow + .stackrow { margin-top: 14px; }
#stack .stackrow:first-of-type { margin-top: 26px; }
.stackrow .cat {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--signal);
}
.stackrow .tags { gap: 8px; }
.stackrow .tag { font-size: 12px; padding: 7px 12px; }
.stackrow:hover .tag { border-color: var(--hairline-2); }

@media (max-width: 880px) {
  .stackrow { grid-template-columns: 1fr; gap: 12px; padding: 18px; }
}