/* ---------- Fonts (self-hosted, latin subset) ---------- */
@font-face {
  font-family: "Plex Sans";
  src: url("assets/fonts/plex-sans-var.woff2") format("woff2");
  font-weight: 400 700;
  font-stretch: 85% 100%;
  font-display: swap;
}
@font-face {
  font-family: "Plex Mono";
  src: url("assets/fonts/plex-mono-400.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "Plex Mono";
  src: url("assets/fonts/plex-mono-500.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}

/* ---------- Tokens ---------- */
:root {
  --bg: #F3F5F7;
  --ink: #101826;
  --muted: #4B5565;
  --rule: #D3D9E0;
  --accent: #2346C8;
  --signal: #17784A;

  --sans: "Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --wrap: 70rem;
  --gutter: 16px;
  --label-col: 15rem;
  --months: 32; /* trace axis: Jan 2025 to end of Aug 2027 */
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0F131A;
    --ink: #E3E7ED;
    --muted: #9AA4B2;
    --rule: #283040;
    --accent: #8EA4FF;
    --signal: #5AC98F;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0F131A;
  --ink: #E3E7ED;
  --muted: #9AA4B2;
  --rule: #283040;
  --accent: #8EA4FF;
  --signal: #5AC98F;
  color-scheme: dark;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, p, ul, dl, dd, figure { margin: 0; }
ul { padding: 0; }
img { display: block; max-width: 100%; height: auto; }
b, strong { font-weight: 600; }

a { color: var(--accent); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 0.2em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
main:focus { outline: none; }

.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}
.skip {
  position: absolute; left: var(--gutter); top: -100px; z-index: 50;
  background: var(--ink); color: var(--bg); padding: 10px 14px; text-decoration: none;
}
.skip:focus { top: 10px; }

.when, .project-meta, .stack, .span-dur, .trace-axis, figcaption, .skills dt {
  font-family: var(--mono);
  font-feature-settings: "zero" 0;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
.site-header-inner { display: flex; align-items: center; gap: 12px; height: 56px; }
.brand {
  font-weight: 600; font-stretch: 88%; font-size: 1.0625rem; letter-spacing: -0.01em;
  color: var(--ink); text-decoration: none; margin-right: auto; white-space: nowrap;
}
.nav { list-style: none; display: flex; gap: 4px; }
.nav a {
  display: block; padding: 8px 10px; font-size: 0.9375rem;
  color: var(--ink); text-decoration: none;
}
.nav a:hover { color: var(--accent); }
.theme-toggle {
  display: inline-grid; place-items: center;
  width: 40px; height: 40px; padding: 0;
  background: none; border: 1px solid var(--rule); border-radius: 4px;
  color: var(--ink); cursor: pointer;
}
.theme-toggle:hover { border-color: var(--muted); }
.theme-toggle .icon-sun { display: none; }
.theme-toggle[aria-pressed="true"] .icon-sun { display: block; }
.theme-toggle[aria-pressed="true"] .icon-moon { display: none; }
.theme-toggle[hidden] { display: none; }

/* ---------- Hero ---------- */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  column-gap: 20px;
  padding-top: 40px;
  padding-bottom: 48px;
}
.hero h1 {
  font-size: clamp(2.75rem, 1.5rem + 5.2vw, 5rem);
  font-weight: 600;
  font-stretch: 86%;
  line-height: 0.95;
  letter-spacing: -0.025em;
  margin-bottom: 20px;
}
.lede {
  font-size: clamp(1.1875rem, 1rem + 0.7vw, 1.5rem);
  line-height: 1.35;
  letter-spacing: -0.005em;
  max-width: 38ch;
  margin-bottom: 16px;
}
.bio { color: var(--muted); max-width: 60ch; margin-bottom: 24px; }
.availability {
  max-width: 60ch;
  border-left: 3px solid var(--signal);
  padding: 2px 0 2px 14px;
  margin-bottom: 28px;
}
.hero-text { display: contents; }
.hero-text > * { grid-column: 1 / -1; }
.hero h1 { grid-column: 1; grid-row: 1; align-self: end; }
.portrait { grid-column: 2; grid-row: 1; margin: 6px 6px 26px 0; }
.portrait img {
  width: 104px; aspect-ratio: 3 / 4; object-fit: cover;
  outline: 1.5px solid var(--accent);
  outline-offset: 5px;
}

.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 22px; }
.button {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0 22px;
  background: var(--accent); color: var(--bg);
  font-weight: 600; text-decoration: none; border-radius: 3px;
}
.button:hover { background: var(--ink); }
.email { display: inline-flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.copy {
  font: 500 0.8125rem/1 var(--mono);
  min-height: 32px; padding: 0 10px;
  background: none; color: var(--ink);
  border: 1px solid var(--muted); border-radius: 3px; cursor: pointer;
}
.copy:hover { border-color: var(--accent); color: var(--accent); }
.copy[hidden] { display: none; }
.actions a:not(.button) { padding-block: 10px; }
.social { display: inline-flex; gap: 22px; }

/* ---------- Sections ---------- */
.section { padding-top: 56px; padding-bottom: 56px; border-top: 1px solid var(--rule); scroll-margin-top: 56px; }
.section h2 { font-size: 1.75rem; font-weight: 600; font-stretch: 92%; letter-spacing: -0.015em; line-height: 1.15; }
.section-head { margin-bottom: 32px; }
.section-head p { color: var(--muted); margin-top: 6px; }
h3 { font-size: 1.1875rem; font-weight: 600; line-height: 1.3; letter-spacing: -0.005em; }
.when { font-size: 0.875rem; color: var(--muted); }

/* ---------- Trace (experience) ---------- */
.trace { --now: 21; position: relative; }
.trace-axis,
.span-track {
  position: relative;
  /* month ticks + year gridlines, both derived from --months */
  --m: calc(100% / var(--months));
}
.trace-axis {
  height: 24px; font-size: 0.75rem; color: var(--muted);
  border-bottom: 1px solid var(--rule);
  margin-bottom: 8px;
}
.trace-axis span {
  position: absolute; bottom: 4px;
  left: calc(var(--at) / var(--months) * 100%);
  padding-left: 5px;
  border-left: 1px solid var(--muted);
  line-height: 1;
}
.trace-axis .trace-now-label {
  left: calc(var(--now) / var(--months) * 100%);
  border-left: 0; padding-left: 0; transform: translateX(-50%);
  bottom: auto; top: -2px; color: var(--ink);
}
.span-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding: 22px 0 26px;
  border-bottom: 1px solid var(--rule);
}
.span-row:last-of-type { border-bottom: 0; }
.span-label p:not(.when) { color: var(--ink); }
.span-label .when { margin-top: 2px; }
.span-track {
  height: 22px;
  background:
    linear-gradient(to right, var(--rule) 1px, transparent 1px) 0 0 / calc(100% * 12 / var(--months)) 100% repeat-x,
    linear-gradient(to right, var(--rule), var(--rule)) 0 50% / 100% 1px no-repeat;
}
/* the "now" cursor, repeated in every track so it lines up down the page */
.span-track::after {
  content: ""; position: absolute; top: -4px; bottom: -4px; width: 0;
  left: calc(var(--now) / var(--months) * 100%);
  border-left: 1px dashed var(--ink);
  opacity: 0.55;
}
.span-bar {
  position: absolute; top: 4px; bottom: 4px;
  left: calc(var(--s) / var(--months) * 100%);
  width: calc((var(--e) - var(--s)) / var(--months) * 100%);
  background: var(--accent);
  border-radius: 1px;
  transform-origin: left center;
}
.span-dur {
  position: absolute; top: 50%; transform: translateY(-50%);
  left: calc(var(--e) / var(--months) * 100% + 8px);
  font-size: 0.75rem; color: var(--muted); white-space: nowrap;
  background: var(--bg); padding-inline: 2px 4px; z-index: 1;
}
.is-next .span-bar {
  background: repeating-linear-gradient(90deg, var(--signal) 0 5px, transparent 5px 8px) top / 100% 1.5px no-repeat,
              repeating-linear-gradient(90deg, var(--signal) 0 5px, transparent 5px 8px) bottom / 100% 1.5px no-repeat,
              color-mix(in srgb, var(--signal) 16%, transparent);
  border-inline: 1.5px solid var(--signal);
}
.is-next .span-bar + .span-bar { border-left-width: 0; }
.is-next .span-dur {
  left: auto; right: calc(100% - var(--s) / var(--months) * 100% + 8px);
  color: var(--signal); font-weight: 500;
}
.is-next .span-label h3 { color: var(--signal); }

.span-log { list-style: none; max-width: 68ch; }
.span-log li, .project-points li {
  position: relative; padding-left: 18px; margin-top: 8px;
}
.span-log li::before, .project-points li::before {
  content: ""; position: absolute; left: 2px; top: 0.78em;
  width: 7px; height: 1px; background: var(--muted);
}

/* entrance: spans grow from their start once (JS adds the classes) */
@media (prefers-reduced-motion: no-preference) {
  .trace.is-armed .span-bar { transform: scaleX(0); }
  .trace.is-armed .span-dur { opacity: 0; }
  .trace.is-in .span-bar { transform: scaleX(1); transition: transform 500ms cubic-bezier(.2,.7,.2,1); }
  .trace.is-in .span-dur { opacity: 1; transition: opacity 300ms 350ms; }
  .trace.is-in .span-row:nth-of-type(2) .span-bar { transition-delay: 60ms; }
  .trace.is-in .span-row:nth-of-type(3) .span-bar { transition-delay: 120ms; }
  .trace.is-in .span-row:nth-of-type(4) .span-bar { transition-delay: 180ms; }
  .trace.is-in .span-row:nth-of-type(1) .span-bar + .span-bar { transition-delay: 90ms; }
}

/* ---------- Projects ---------- */
.project {
  display: grid; gap: 24px;
  padding: 32px 0 40px;
  border-top: 1px solid var(--rule);
}
.project:first-of-type { border-top: 0; padding-top: 0; }
.project-text { display: flex; flex-direction: column; gap: 10px; max-width: 64ch; }
.project-text h3 { font-size: 1.5rem; font-stretch: 92%; letter-spacing: -0.015em; }
.project-meta { font-size: 0.875rem; color: var(--muted); margin-top: -6px; }
.project-points { list-style: none; margin-top: -4px; }
.stack { font-size: 0.875rem; color: var(--muted); }
.project-links { display: flex; flex-wrap: wrap; gap: 4px 24px; font-weight: 600; }
.project-links a { padding-block: 8px; }

.shot { min-width: 0; }
.shot-frame { position: relative; }
.shot-frame > img:first-child {
  width: 100%; border: 1px solid var(--rule); background: var(--rule);
}
.shot-mobile { display: none; }
.shot figcaption { font-size: 0.75rem; color: var(--muted); margin-top: 8px; overflow-wrap: anywhere; }

/* ---------- Skills + education ---------- */
.background { display: grid; gap: 48px; }
.skills { margin-top: 20px; }
.skills > div { padding: 12px 0; border-top: 1px solid var(--rule); }
.skills dt { font-size: 0.8125rem; color: var(--muted); margin-bottom: 2px; }
.background h2 + p, .edu-school { margin-top: 20px; font-weight: 600; }
.edu-course { color: var(--muted); margin-top: 12px; max-width: 48ch; }

/* ---------- Contact + footer ---------- */
.contact-lede { max-width: 56ch; margin: 12px 0 20px; }
.email--large a { font-size: clamp(1.1875rem, 1rem + 1vw, 1.625rem); font-weight: 600; letter-spacing: -0.01em; overflow-wrap: anywhere; }
.contact-links { list-style: none; display: flex; flex-wrap: wrap; gap: 4px 24px; margin-top: 12px; }
.contact-links a { display: inline-block; padding-block: 8px; }
.site-footer {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px;
  padding-top: 24px; padding-bottom: 40px; border-top: 1px solid var(--rule);
  font-size: 0.875rem; color: var(--muted);
}

/* ---------- Resume dialog ---------- */
html:has(.resume[open]) { overflow: hidden; }
.resume {
  width: min(960px, calc(100vw - 24px));
  height: min(92vh, 1200px);
  max-width: none; max-height: none;
  padding: 0; border: 1px solid var(--rule); border-radius: 4px;
  background: var(--bg); color: var(--ink);
}
.resume[open] { display: flex; flex-direction: column; }
.resume::backdrop { background: rgb(8 10 14 / 0.62); }
.resume-bar {
  display: flex; align-items: center; gap: 16px;
  padding: 8px 8px 8px 16px; border-bottom: 1px solid var(--rule);
}
.resume-bar h2 { font-size: 1.0625rem; font-weight: 600; margin-right: auto; }
.resume-bar a { font-size: 0.9375rem; padding-block: 8px; }
.resume-close {
  display: inline-grid; place-items: center; width: 40px; height: 40px;
  background: none; border: 1px solid var(--rule); border-radius: 4px; color: var(--ink); cursor: pointer;
}
.resume-close:hover { border-color: var(--muted); }
.resume-frame { flex: 1; width: 100%; border: 0; background: #fff; }

/* ---------- Wider screens ---------- */
@media (min-width: 560px) {
  :root { --gutter: 24px; }
}
@media (max-width: 559px) {
  .nav-section { display: none; }
}
@media (min-width: 760px) {
  :root { --gutter: 32px; }
  .hero { column-gap: 48px; padding-top: 72px; padding-bottom: 64px; }
  .hero-text { display: block; grid-column: 1; grid-row: 1; }
  .hero h1 { grid-row: auto; }
  .portrait { grid-row: 1; align-self: start; margin-bottom: 0; }
  .portrait img { width: clamp(200px, 22vw, 280px); }
  .section { padding-top: 80px; padding-bottom: 80px; }
  .section-head { margin-bottom: 40px; }
  .background { grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 64px; }
  .skills > div { display: grid; grid-template-columns: 7.5rem minmax(0, 1fr); gap: 16px; }
  .skills dt { margin: 3px 0 0; }
}
@media (min-width: 900px) {
  .trace-axis { margin-left: calc(var(--label-col) + 40px); }
  .span-row {
    grid-template-columns: var(--label-col) minmax(0, 1fr);
    column-gap: 40px; row-gap: 12px;
  }
  .span-label { grid-row: 1 / span 2; }
  .span-track { grid-column: 2; margin-top: 2px; }
  .span-log { grid-column: 2; }

  .project { grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr); gap: 48px; align-items: start; padding: 48px 0 56px; }
  .project:first-of-type { padding-top: 0; }
  .project--text { grid-template-columns: minmax(0, 1fr); }
  .shot-frame { padding: 0 0 28px 0; margin-right: 20px; }
  .shot-mobile {
    display: block; position: absolute; right: -20px; bottom: 0;
    width: 20%; aspect-ratio: 9 / 14; object-fit: cover; object-position: top;
    border: 1px solid var(--rule); background: var(--bg);
    box-shadow: 0 0 0 6px var(--bg);
  }
  .shot figcaption { margin-top: -18px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}