/* Terminal-style orange theme, MOBILE FIRST.
   Base rules target phones; min-width media queries add space and columns for larger screens.
   No external fonts or resources (keeps the Content-Security-Policy strict). */
:root {
  --bg: #0c0c0c;
  --panel: #151311;
  --line: #2b2622;
  --text: #e8e2da;
  --dim: #9a9187;
  --orange: #ff8c1a;
  --orange-soft: #ffb15c;
  --focus: #ffd29a;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
  --gutter: 1rem;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.6;
  overflow-wrap: anywhere; /* long emails and URLs never push the page sideways */
}

a { color: var(--orange); text-underline-offset: 3px; }
a:hover { color: var(--orange-soft); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; }
img, svg { max-width: 100%; height: auto; }
.dim { color: var(--dim); }

.skip { position: absolute; left: -999px; top: 0; background: var(--orange); color: #000; padding: .6rem 1rem; z-index: 20; }
.skip:focus { left: 0; }

/* ---------- top bar: prompt on top, nav scrolls sideways on phones ---------- */
.bar {
  position: sticky; top: 0; z-index: 10;
  background: rgba(12, 12, 12, .96);
  border-bottom: 1px solid var(--line);
  padding: .4rem var(--gutter) 0;
}
.prompt { display: inline-block; padding: .2rem 0; color: var(--orange); font-weight: 700; text-decoration: none; }
.bar nav { display: flex; gap: .25rem; overflow-x: auto; scrollbar-width: none; margin: 0 calc(var(--gutter) * -1); padding: 0 var(--gutter); }
.bar nav::-webkit-scrollbar { display: none; }
/* phones: fade the right edge so it is obvious the menu scrolls sideways;
   the spacer lets the last link scroll fully clear of the fade */
@media (max-width: 639px) {
  .bar nav { -webkit-mask-image: linear-gradient(to right, #000 calc(100% - 2rem), transparent); mask-image: linear-gradient(to right, #000 calc(100% - 2rem), transparent); }
  .bar nav::after { content: ""; flex: none; width: 2rem; }
}
.bar nav a {
  flex: none; display: inline-flex; align-items: center;
  min-height: 44px; padding: 0 .6rem; /* 44px = comfortable touch target */
  color: var(--text); text-decoration: none;
}
.bar nav a::before { content: "./"; color: var(--dim); }
.bar nav a:hover, .bar nav a[aria-current="page"] { color: var(--orange); }

main, footer { max-width: 960px; margin: 0 auto; padding: 0 var(--gutter); }
section { padding: 2.25rem 0 .5rem; scroll-margin-top: 6.5rem; }

h1 { font-size: clamp(2rem, 11vw, 3.6rem); line-height: 1.1; margin: .25rem 0 .75rem; color: var(--orange); }
h2 { font-size: 1.25rem; margin: 0 0 1rem; color: var(--orange); border-bottom: 1px dashed var(--line); padding-bottom: .5rem; }
h3 { font-size: 1rem; margin: 0 0 .35rem; color: var(--text); }
.hash { color: var(--dim); }

/* ---------- hero + live clock ---------- */
.hero { padding-top: 2.5rem; }
.tagline { font-size: 1.05rem; margin: 0 0 .5rem; }
.meta { color: var(--dim); margin: 0 0 1.25rem; }
.cursor { color: var(--orange); animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.actions { display: grid; gap: .6rem; margin: 0 0 1.5rem; }
.btn {
  display: flex; align-items: center; min-height: 44px; padding: .45rem 1rem;
  border: 1px solid var(--orange); color: var(--orange);
  text-decoration: none; border-radius: 3px;
}
.btn:hover { background: rgba(255, 140, 26, .12); color: var(--orange-soft); }
.btn.primary { background: var(--orange); color: #0c0c0c; font-weight: 700; }
.btn.primary:hover { background: var(--orange-soft); color: #0c0c0c; }

.clock { display: grid; gap: .1rem 1rem; background: var(--panel); border: 1px solid var(--line); border-radius: 4px; padding: .8rem 1rem; margin: 0; }
.clock dt { color: var(--dim); font-size: .8rem; margin-top: .5rem; }
.clock dt:first-child { margin-top: 0; }
.clock dd { margin: 0; color: var(--orange-soft); font-variant-numeric: tabular-nums; }

/* ---------- definition lists ---------- */
.facts { display: grid; gap: 0; margin: 1rem 0 0; }
.facts dt { color: var(--orange); margin-top: .6rem; }
.facts dt::after { content: ":"; color: var(--dim); }
.facts dd { margin: 0; }

/* ---------- tags ---------- */
.tags { list-style: none; display: flex; flex-wrap: wrap; gap: .4rem; padding: 0; margin: .25rem 0 1rem; }
.tags li { border: 1px solid var(--line); background: var(--panel); padding: .05rem .55rem; border-radius: 3px; color: var(--orange-soft); font-size: .9rem; }
.tags.small li { font-size: .78rem; padding: 0 .4rem; }
.skillgroups { display: grid; gap: .5rem; }

/* ---------- cards and panels ---------- */
.cards { display: grid; gap: .9rem; margin-top: 1rem; }
.card, .panel {
  display: flex; flex-direction: column;
  background: var(--panel); border: 1px solid var(--line); border-radius: 4px;
  padding: 1rem; color: var(--text); text-decoration: none;
}
.card { transition: border-color .15s, transform .15s; }
.card h3 { color: var(--orange); }
.card p { margin: 0 0 .75rem; }
.card .open { margin-top: auto; color: var(--orange); }
.card .when { color: var(--dim); font-size: .8rem; }
.card:hover, .card:focus-visible { border-color: var(--orange); transform: translateY(-2px); }
.panel ul { margin: 0; padding-left: 1.1rem; }
.panel li { margin-bottom: .25rem; }

/* ---------- experience / education entries ---------- */
.entry { border-left: 2px solid var(--line); padding: 0 0 1.25rem 1rem; margin-left: .25rem; }
.entry h3 { color: var(--orange); }
.entry .when { color: var(--dim); font-size: .85rem; margin: 0 0 .4rem; }
.entry ul { margin: .25rem 0 0; padding-left: 1.1rem; }
.entry li { margin-bottom: .3rem; }

/* ---------- timeline ---------- */
.timeline { list-style: none; margin: 1.25rem 0 0; padding: 0 0 0 1.25rem; border-left: 2px solid var(--line); }
.timeline li { position: relative; padding: 0 0 1.4rem 1rem; }
.timeline li::before {
  content: ""; position: absolute; left: -1.75rem; top: .5rem;
  width: .75rem; height: .75rem; background: var(--orange); border-radius: 50%;
  box-shadow: 0 0 0 4px var(--bg);
}
.timeline time { color: var(--dim); font-size: .85rem; }
.timeline h3 { color: var(--orange); font-size: 1.05rem; }
.timeline p { margin: 0; }

/* "click for more" expanders (events, project details) - no JavaScript needed */
details.expander { margin-top: .25rem; }
details.expander > summary {
  display: flex; align-items: center; min-height: 44px; cursor: pointer; list-style: none;
  color: var(--orange); border: 1px dashed var(--orange); border-radius: 3px; padding: 0 1rem;
}
details.expander > summary::-webkit-details-marker { display: none; }
details.expander > summary:hover { background: rgba(255, 140, 26, .1); }
details.expander .less { display: none; }
details.expander[open] .more { display: none; }
details.expander[open] .less { display: inline; }
details.expander > .timeline,
details.expander > summary + .entry { margin-top: 1.25rem; }

/* ---------- blog-style project pages ---------- */
.post { padding-top: 2rem; }
.post .crumbs { color: var(--dim); margin: 0 0 1rem; }
.post h1 { font-size: clamp(1.7rem, 8vw, 2.6rem); }
.post .byline { color: var(--dim); margin: 0 0 1rem; }
.post h2 { margin-top: 2rem; }
.post p, .post li { max-width: 70ch; }
.post ul { padding-left: 1.2rem; }
.post li { margin-bottom: .45rem; }
.post .note { border-left: 3px solid var(--orange); background: var(--panel); padding: .75rem 1rem; margin: 1rem 0; }
.post pre {
  background: var(--panel); border: 1px solid var(--line); border-radius: 4px;
  padding: .8rem 1rem; overflow-x: auto; overflow-wrap: normal; font-size: .85rem;
}
.post .nextprev { display: grid; gap: .6rem; margin-top: 2.5rem; }

/* ---------- back to top (shown by main.js after scrolling) ---------- */
.totop {
  position: fixed; right: max(1rem, env(safe-area-inset-right)); bottom: max(1rem, env(safe-area-inset-bottom));
  z-index: 15; min-width: 44px; min-height: 44px; display: inline-flex; align-items: center; justify-content: center;
  padding: 0 .9rem; background: var(--orange); color: #0c0c0c; font-weight: 700;
  border-radius: 3px; text-decoration: none; box-shadow: 0 2px 10px rgba(0, 0, 0, .6);
}
.totop[hidden] { display: none; }
.totop:hover { background: var(--orange-soft); color: #0c0c0c; }

footer { margin-top: 3rem; padding-top: 1.25rem; padding-bottom: 5rem; border-top: 1px dashed var(--line); font-size: .85rem; }
footer p { margin: .25rem 0; }

/* ---------- tablet and up ---------- */
@media (min-width: 640px) {
  :root { --gutter: 1.5rem; }
  body { font-size: 16px; }
  .bar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-top: 0; }
  .bar nav { margin: 0; padding: 0; }
  section { scroll-margin-top: 4rem; padding-top: 3rem; }
  .hero { padding-top: 4rem; }
  .actions { display: flex; flex-wrap: wrap; }
  .btn { display: inline-flex; }
  .clock { grid-template-columns: max-content 1fr; }
  .clock dt { margin-top: 0; }
  .facts { grid-template-columns: max-content 1fr; gap: .35rem 1.25rem; }
  .facts dt { margin-top: 0; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .skillgroups { grid-template-columns: repeat(2, 1fr); gap: .5rem 2rem; }
  .post .nextprev { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 960px) {
  .cards.three { grid-template-columns: repeat(3, 1fr); }
  h2 { font-size: 1.4rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .cursor { animation: none; }
  .card { transition: none; }
}

@media print {
  body { background: #fff; color: #000; }
  .bar, .actions, .skip, .totop, .clock { display: none; }
  a, h1, h2, .card h3, .timeline h3, .entry h3 { color: #000; }
}