/* ---------- tokens: complete light palette ---------- */
:root {
  --bg:            #f6f8f8;
  --surface:       #edf0f1;
  --surface-2:     #e5e9eb;
  --ink:           #10161a;
  --muted:         #55636a;
  --faint:         #8b969c;
  --rule:          #d9dfe1;
  --rule-strong:   #c2cace;
  --accent:        #0b5cad;
  --accent-bright: #1a6dc9;
  --accent-wash:   rgba(11, 92, 173, .075);
  --accent-edge:   rgba(11, 92, 173, .30);
  --sel:           rgba(11, 92, 173, .18);

  --font-display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --font-body:    "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-mono:    "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --measure: 46rem;
  --rail: 9.5rem;

  /* Fallback until the script measures the real masthead. */
  --header-h: 3.35rem;
}

html {
  /* Keeps anchor targets clear of the sticky masthead. */
  scroll-padding-top: calc(var(--header-h) + 1.25rem);
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg:            #0b0f12;
    --surface:       #121a1e;
    --surface-2:     #182227;
    --ink:           #e7edef;
    --muted:         #93a2a9;
    --faint:         #65747b;
    --rule:          #1e282d;
    --rule-strong:   #2d383e;
    --accent:        #8ab9e0;
    --accent-bright: #a9cdea;
    --accent-wash:   rgba(138, 185, 224, .10);
    --accent-edge:   rgba(138, 185, 224, .34);
    --sel:           rgba(138, 185, 224, .24);
  }
}

:root[data-theme="dark"] {
  --bg:            #0b0f12;
  --surface:       #121a1e;
  --surface-2:     #182227;
  --ink:           #e7edef;
  --muted:         #93a2a9;
  --faint:         #65747b;
  --rule:          #1e282d;
  --rule-strong:   #2d383e;
  --accent:        #8ab9e0;
  --accent-bright: #a9cdea;
  --accent-wash:   rgba(138, 185, 224, .10);
  --accent-edge:   rgba(138, 185, 224, .34);
  --sel:           rgba(138, 185, 224, .24);
}

/* ---------- base ---------- */
* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--sel); }

a { color: inherit; }

:where(a, button):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- masthead ---------- */
.masthead {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--rule);
  transition: transform .28s cubic-bezier(.4, 0, .2, 1);
  will-change: transform;
}

.masthead.is-hidden {
  transform: translateY(calc(-100% - env(safe-area-inset-top, 0px)));
}

.masthead-inner {
  max-width: var(--measure);
  margin-inline: auto;
  padding-inline: 1.5rem;
  padding-block: .7rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.monogram {
  font-family: var(--font-mono);
  font-size: .78rem;
  font-weight: 500;
  letter-spacing: .13em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
  white-space: nowrap;
}
.monogram::before {
  content: "";
  display: inline-block;
  width: .42rem;
  height: .42rem;
  margin-right: .5rem;
  vertical-align: .05em;
  background: var(--accent);
  border-radius: 50%;
}

.masthead nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 1.15rem;
}

.navlink {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  padding-block: .25rem;
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}
.navlink:hover { color: var(--ink); border-bottom-color: var(--accent); }

.theme-toggle {
  appearance: none;
  background: transparent;
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  color: var(--muted);
  cursor: pointer;
  width: 1.9rem;
  height: 1.9rem;
  display: grid;
  place-items: center;
  padding: 0;
  flex-shrink: 0;
  transition: color .18s ease, border-color .18s ease, background .18s ease;
}
.theme-toggle:hover { color: var(--accent); border-color: var(--accent-edge); background: var(--accent-wash); }
.theme-toggle svg { width: 15px; height: 15px; }

/* Sun in light, moon in dark. These selectors all carry the same weight as
   `.theme-toggle svg`, so whichever icon is hidden actually stays hidden. */
.theme-toggle .icon-sun  { display: block; }
.theme-toggle .icon-moon { display: none; }

:root[data-theme="dark"] .theme-toggle .icon-sun  { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun  { display: none; }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: block; }
}

/* ---------- shell ---------- */
.shell {
  max-width: var(--measure);
  margin-inline: auto;
  padding-inline: 1.5rem;
  padding-block: 0 4.5rem;
}

/* ---------- hero ---------- */
.hero { padding-block: 2.25rem 2.5rem; }

.hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.5rem, 9vw, 4rem);
  line-height: 1.02;
  letter-spacing: -.035em;
  margin: 0 0 .1rem;
  text-wrap: balance;
}

.hero .alias {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--faint);
  letter-spacing: .04em;
  margin: 0 0 1.4rem;
}

.thesis {
  font-size: 1.16rem;
  line-height: 1.6;
  color: var(--ink);
  margin: 0 0 1rem;
  max-width: 34rem;
}
.thesis strong { font-weight: 600; }

.thesis-sub {
  font-size: 1.02rem;
  color: var(--muted);
  margin: 0 0 1.9rem;
  max-width: 34rem;
}

.status-row {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem 1.15rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .04em;
  color: var(--muted);
  margin-bottom: 1.9rem;
}
.status-row span { display: inline-flex; align-items: center; gap: .45rem; }

/* The accent dot pulls the eye to availability first; the hometown sits a step
   back, marked by an outlined pin rather than a filled dot. */
.pulse {
  width: .4rem; height: .4rem; border-radius: 50%;
  background: var(--accent); flex-shrink: 0;
}

.hometown .pin {
  width: .82rem;
  height: .82rem;
  flex-shrink: 0;
  color: var(--faint);
  margin-left: -.06rem;   /* the glyph's own side bearing, optically corrected */
}

.contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.4rem;
  font-family: var(--font-mono);
  font-size: .8rem;
}
.contact-row a {
  display: inline-flex;
  align-items: center;
  gap: .42rem;
  color: var(--muted);
  text-decoration: none;
  transition: color .18s ease;
}
/* The rule sits on the label, not the anchor, so it doesn't run under the icon. */
.contact-row a .lbl {
  border-bottom: 1px solid var(--rule-strong);
  padding-bottom: 1px;
  transition: border-color .18s ease;
}
.contact-row a:hover { color: var(--accent); }
.contact-row a:hover .lbl { border-bottom-color: var(--accent); }

.contact-row .ic {
  width: .95rem;
  height: .95rem;
  flex-shrink: 0;
}

/* Holds the <symbol> definitions without occupying layout. */
.icon-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

/* ---------- clearance banner (the one loud moment) ---------- */
.clearance {
  display: grid;
  grid-template-columns: 3px 1fr;
  background: var(--accent-wash);
  border: 1px solid var(--accent-edge);
  border-left: 0;
  margin-block: .5rem 3.75rem;
  overflow: hidden;
}
.clearance-bar { background: var(--accent); }
.clearance-body { padding: .9rem 1.1rem; }
.clearance-mark {
  font-family: var(--font-mono);
  font-size: .76rem;
  font-weight: 500;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 .3rem;
}
.clearance-note {
  font-size: .92rem;
  color: var(--muted);
  margin: 0;
  line-height: 1.5;
}

/* ---------- sections ---------- */
.section { padding-block: 0 3.5rem; }

.section-head {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
}
.section-head h2 {
  font-family: var(--font-mono);
  font-size: .74rem;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0;
  white-space: nowrap;
}
.section-head::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--rule);
}

/* ---------- entry (manifest row) ---------- */
.entry {
  display: grid;
  grid-template-columns: var(--rail) 1fr;
  gap: 0 1.75rem;
  padding-block: 1.5rem;
  border-top: 1px solid var(--rule);
}
.entry:first-of-type { border-top: 0; padding-top: 0; }

.entry-rail {
  font-family: var(--font-mono);
  font-size: .73rem;
  line-height: 1.55;
  color: var(--faint);
  letter-spacing: .02em;
  font-variant-numeric: tabular-nums;
  padding-top: .3rem;
}
.entry-rail .place {
  display: block;
  margin-top: .3rem;
  color: var(--faint);
}

.entry-title {
  font-family: var(--font-display);
  font-size: 1.14rem;
  font-weight: 600;
  letter-spacing: -.012em;
  margin: 0 0 .1rem;
  line-height: 1.3;
}
.entry-title a {
  text-decoration: none;
  border-bottom: 1px solid var(--accent-edge);
  transition: color .18s ease, border-color .18s ease;
}
.entry-title a:hover { color: var(--accent); border-bottom-color: var(--accent); }

.entry-role {
  font-family: var(--font-mono);
  font-size: .76rem;
  color: var(--accent);
  letter-spacing: .03em;
  margin: 0 0 .75rem;
}

.entry ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .6rem;
}
.entry li {
  position: relative;
  padding-left: 1.05rem;
  color: var(--muted);
  font-size: .97rem;
  line-height: 1.58;
}
.entry li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: .38rem;
  height: 1px;
  background: var(--rule-strong);
}
.entry li strong { color: var(--ink); font-weight: 600; }

/* ---------- stack tags ---------- */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
  margin-top: .95rem;
}
.tag {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .03em;
  color: var(--muted);
  border: 1px solid var(--rule);
  padding: .16rem .45rem;
  white-space: nowrap;
}

/* ---------- metrics strip on projects ---------- */
.metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 1.6rem;
  margin: 0 0 .9rem;
  padding: .7rem 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.metric { display: flex; flex-direction: column; gap: .1rem; }
.metric b {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -.01em;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
}
.metric span {
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--faint);
}

/* ---------- skills ---------- */
.skill-group {
  display: grid;
  grid-template-columns: var(--rail) 1fr;
  gap: 0 1.75rem;
  padding-block: 1.05rem;
  border-top: 1px solid var(--rule);
  align-items: start;
}
.skill-group:first-of-type { border-top: 0; padding-top: 0; }
.skill-group dt {
  font-family: var(--font-mono);
  font-size: .73rem;
  letter-spacing: .02em;
  color: var(--faint);
  padding-top: .12rem;
}
.skill-group dd {
  margin: 0;
  font-size: .97rem;
  color: var(--muted);
  line-height: 1.7;
}
dl { margin: 0; }

/* ---------- footer ---------- */
.footer {
  border-top: 1px solid var(--rule);
  padding-top: 2.5rem;
}
.footer h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -.02em;
  margin: 0 0 .6rem;
}
.footer > p {
  color: var(--muted);
  margin: 0 0 1.5rem;
  max-width: 30rem;
  font-size: 1rem;
}
/* must out-specify .footer > p, or it inherits body-copy size and loses its top margin */
.footer > p.colophon {
  margin: 3.25rem 0 0;
  padding-top: 1.4rem;
  border-top: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .04em;
  color: var(--faint);
  line-height: 1.8;
  max-width: none;
}

/* ---------- responsive ---------- */
@media (max-width: 640px) {
  .entry, .skill-group {
    grid-template-columns: 1fr;
    gap: .55rem;
  }
  .entry-rail { padding-top: 0; }
  .entry-rail .place { display: inline; margin-top: 0; }
  .entry-rail .place::before { content: " · "; }
  .skill-group dt { padding-top: 0; }
  .hero { padding-block: 1.75rem 2rem; }
  .masthead nav { gap: .85rem; }
  .navlink { font-size: .68rem; }
  .shell, .masthead-inner { padding-inline: 1.15rem; }
}

/* Five nav links need more room than the four this breakpoint was tuned for. */
@media (max-width: 520px) {
  .nav-hide-xs { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}