/* ---------------------------------------------------------------------------
   chris.topher.li

   One page, one column, no JavaScript.

   The whole design is three decisions:
     1. A single measure of ~36rem. Nothing is ever wider than comfortable.
     2. A system serif stack, so there is no webfont request and no layout
        shift. Charter / Iowan on Apple, Sitka on Windows, Noto on Android,
        Georgia everywhere else.
     3. Hierarchy comes from size and space, not from boxes and borders.
   --------------------------------------------------------------------------- */

:root {
  --measure:    36rem;
  --gutter:     1.5rem;

  --serif: Charter, "Bitstream Charter", "Iowan Old Style", "Sitka Text",
           "Noto Serif", Georgia, Cambria, "Times New Roman", serif;

  --ink:        #191817;
  --ink-muted:  #605c55;
  --ink-faint:  #928d84;
  --paper:      #fcfbf8;
  --rule:       #e6e2d9;
  --accent:     #9c3d2a;
  --accent-dim: #d7b6ad;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink:        #e9e6e0;
    --ink-muted:  #a7a199;
    --ink-faint:  #7e7871;
    --paper:      #171615;
    --rule:       #322f2b;
    --accent:     #e0937c;
    --accent-dim: #6b4a40;
  }
}

/* --- reset-ish ----------------------------------------------------------- */

*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.0625rem, 1rem + 0.3vw, 1.1875rem);
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- the page ------------------------------------------------------------ */

.page {
  max-width: calc(var(--measure) + 2 * var(--gutter));
  margin-inline: auto;
  padding: clamp(3rem, 9vw, 6rem) var(--gutter) 4rem;
}

/* --- masthead ------------------------------------------------------------ */

.masthead { margin-bottom: 2.75rem; }

.name {
  margin: 0;
  font-size: clamp(2rem, 1.55rem + 2vw, 2.6rem);
  font-weight: 600;
  letter-spacing: -0.018em;
  line-height: 1.08;
}

.role {
  margin: 0.55rem 0 0;
  color: var(--ink-muted);
  font-size: 1.05rem;
}

.contact {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.25rem;
  margin: 1.1rem 0 0;
  padding: 0;
  list-style: none;
  font-size: 0.95rem;
}

/* --- headings ------------------------------------------------------------ */

h2 {
  margin: 3.5rem 0 1.25rem;
  padding-top: 0.95rem;
  border-top: 1px solid var(--rule);
  color: var(--ink-faint);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  line-height: 1.4;
}

h3 {
  margin: 2.4rem 0 0.6rem;
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.38;
  letter-spacing: -0.005em;
  text-wrap: balance;
}

h3 .num {
  margin-right: 0.45em;
  color: var(--ink-faint);
  font-variant-numeric: tabular-nums;
  font-weight: 400;
}

/* Anchored sections shouldn't land flush against the top of the viewport. */
h2[id],
h3[id] { scroll-margin-top: 1.5rem; }

/* --- body copy ----------------------------------------------------------- */

p { margin: 0 0 1.15rem; }

.lede {
  margin-bottom: 1.35rem;
  font-size: 1.18em;
  line-height: 1.56;
  letter-spacing: -0.004em;
  text-wrap: pretty;
}

strong { font-weight: 600; }

ul,
ol {
  margin: 0 0 1.15rem;
  padding-left: 1.2em;
}

/* Numbers need more hanging room than a bullet, especially past item 9. */
ol { padding-left: 1.6em; }

/* Lists are denser than prose: tighter leading inside an item, and a gap
   between items that stays bigger than that leading. Reversing those two
   makes a wrapped item read as two separate bullets. */
li {
  margin-bottom: 0.72rem;
  line-height: 1.48;
}

li:last-child { margin-bottom: 0; }

/* Sub-points belong to the bullet above them, so they cluster tight to their
   parent and to each other. Reserving the airy gap for top-level items is
   what makes the grouping legible without any extra rules or indentation. */
li li { margin-bottom: 0.16rem; }

/* The airy gap is only earned by a list that actually groups things. A flat
   list of one-liners — readings, links — should read as a block instead, so
   it tightens automatically with no class to remember in the Markdown.
   Browsers without :has() just keep the roomier spacing. */
ul:not(:has(ul, ol)) > li,
ol:not(:has(ul, ol)) > li { margin-bottom: 0.16rem; }

li::marker { color: var(--ink-faint); }

ol > li::marker { font-variant-numeric: tabular-nums; }

/* A nested list lives inside a list item, so it drops the paragraph-sized
   gap below it and tightens by a step — otherwise each level of depth adds
   a visual break where it should be adding structure. */
li > ul,
li > ol {
  margin: 0.16rem 0 0;
}

/* Marker shape carries the depth, so nesting stays legible even when the
   indent is shallow — which it is, on a phone. Keyed off ancestor <li> count
   rather than list type, so a ul inside an ol still reads as one level down,
   and the shapes cycle rather than repeating past level three. */
ul { list-style: disc; }
li ul { list-style: circle; }
li li ul { list-style: square; }
li li li ul { list-style: disc; }

ol { list-style: decimal; }
li ol { list-style: lower-alpha; }
li li ol { list-style: lower-roman; }
li li li ol { list-style: decimal; }

/* Kramdown wraps items in <p> when a list has blank lines between entries.
   Without this such a "loose" list spaces out to double the tight one. */
li > p { margin-bottom: 0.5rem; }

li > p:last-child { margin-bottom: 0; }

/* --- links --------------------------------------------------------------- */

a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-decoration-color: var(--accent-dim);
  text-underline-offset: 0.16em;
  transition: text-decoration-color 120ms ease;
}

a:hover,
a:focus-visible { text-decoration-color: var(--accent); }

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

/* --- the year-gutter list ------------------------------------------------ */

.timeline {
  display: grid;
  grid-template-columns: 3.75rem 1fr;
  column-gap: 1.75rem;
  row-gap: 1.5rem;
  margin: 0 0 1.9rem;
}

.timeline dt,
.timeline dd { margin: 0; }

.timeline dt {
  padding-top: 0.24rem;
  color: var(--ink-faint);
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
}

/* First line of an entry: Project · Company · Role, any of them optional. */
.entry-line {
  display: block;
  line-height: 1.4;
}

.entry-project { font-weight: 600; }

.entry-company,
.entry-role {
  font-size: 0.92rem;
  font-weight: 400;
  color: var(--ink-muted);
}

/* Whatever comes first leads the line, so an entry with only a company still
   has something to anchor it instead of reading as another body paragraph. */
.entry-line > span:first-child {
  font-size: inherit;
  font-weight: 600;
  color: var(--ink);
}

/* One separator between each pair of parts that actually exists — no rule
   needs to know which. Swap the content string to change the character. */
.entry-line > span + span::before {
  content: "·";
  margin: 0 0.4em;
  color: var(--ink-faint);
}

.entry-desc {
  display: block;
  margin-top: 0.15rem;
  color: var(--ink-muted);
  font-size: 0.96rem;
  line-height: 1.58;
  text-wrap: pretty;
}

/* On a phone the year gutter costs more width than it earns — stack it. */
@media (max-width: 32rem) {
  .timeline { display: block; }

  .timeline dt {
    padding-top: 0;
    font-size: 0.82rem;
    letter-spacing: 0.05em;
  }

  .timeline dd { margin: 0.1rem 0 1.4rem; }
}

/* --- footer -------------------------------------------------------------- */

.colophon {
  margin-top: 4rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--rule);
  color: var(--ink-faint);
  font-size: 0.85rem;
  line-height: 1.6;
}

.colophon p { margin: 0; }

.colophon a {
  color: inherit;
  text-decoration-color: var(--rule);
}

.colophon a:hover,
.colophon a:focus-visible { color: var(--accent); }

/* --- print --------------------------------------------------------------- */

@media print {
  :root {
    --ink:        #000;
    --ink-muted:  #333;
    --ink-faint:  #555;
    --paper:      #fff;
    --rule:       #ccc;
    --accent:     #000;
    --accent-dim: #999;
  }

  body { font-size: 11pt; line-height: 1.5; }

  .page { max-width: none; padding: 0; }

  h2,
  h3 { break-after: avoid; }

  .timeline dd { break-inside: avoid; }

  /* Paper has no hover state, so spell the destinations out. */
  .page a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.85em;
    color: #555;
    word-break: break-all;
  }
}