/* shuzhao.me: pixel theme in cream / soft green.
   The pixel look lives in the graphics (notched borders, hard shadows, sprites); all text uses
   readable fonts. No blinking or looping animations. */

:root {
  --bg: #eef4e2;
  --paper: #f9fbf3;
  --ink: #1f2d1b;
  --ink-2: #4a5a43;
  --ink-3: #66765e;
  --leaf-1: #e0edcb;
  --leaf-2: #c8e0a8;
  --leaf-3: #a5cb7c;
  --leaf-4: #6f9f48;
  --leaf-5: #3b692b;
  --gold: #c9921a;
  --gold-soft: #f4e5b2;

  --f-text: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --wrap: 880px;
  color-scheme: light;
}

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

/* Components set their own display, which would otherwise override the hidden attribute. */
[hidden] {
  display: none !important;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  margin: 0;
  background-color: var(--bg);
  /* Faint dot grid, one 2x2 dot every 24px. */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24'%3E%3Crect width='2' height='2' fill='%23dde8cc'/%3E%3C/svg%3E");
  color: var(--ink);
  font: 400 15px/1.7 var(--f-text);
}

img {
  max-width: 100%;
  height: auto;
}

p {
  margin: 0;
  /* Keep a lone word off the last line (Chrome, Edge, Safari 26+). */
  text-wrap: pretty;
}

a {
  color: var(--leaf-5);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
  text-decoration-color: var(--leaf-3);
}

a:hover {
  color: var(--ink);
  background: var(--leaf-2);
  text-decoration-color: var(--leaf-5);
}

:focus-visible {
  outline: 2px dashed var(--leaf-5);
  outline-offset: 4px;
}

::selection {
  background: var(--leaf-3);
  color: var(--ink);
}

strong,
b {
  font-weight: 600;
}

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

.sprites {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.skip {
  position: absolute;
  left: -9999px;
}

.skip:focus {
  left: 16px;
  top: 16px;
  z-index: 10;
  padding: 8px 12px;
  background: var(--paper);
}

.ico {
  width: 18px;
  height: 18px;
  flex: none;
  fill: currentColor;
  shape-rendering: crispEdges;
}

/* Notched-corner silhouettes for filled labels. */
.badge,
.award {
  clip-path: polygon(0 2px, 2px 2px, 2px 0, calc(100% - 2px) 0, calc(100% - 2px) 2px, 100% 2px, 100% calc(100% - 2px), calc(100% - 2px) calc(100% - 2px), calc(100% - 2px) 100%, 2px 100%, 2px calc(100% - 2px), 0 calc(100% - 2px));
}

/* ---------- Hero ---------- */

/* The photo frame spans the name block and the link row: the capitals of the name meet its top
   edge and the buttons sit on its bottom edge. The bio runs full width underneath. */
.hero {
  display: grid;
  grid-template-columns: 152px minmax(0, 1fr);
  grid-template-rows: 1fr auto auto;
  grid-template-areas:
    "photo id"
    "photo links"
    "bio bio";
  column-gap: 32px;
  padding: 72px 0 0;
}

.avatar {
  grid-area: photo;
  align-self: start;
  display: block;
  width: 144px;
  height: 144px;
  margin: 4px;
  object-fit: cover;
  background: var(--leaf-1);
  /* A 4px notched frame drawn in the margin, plus a hard offset shadow. */
  box-shadow:
    0 -4px 0 0 var(--ink),
    0 4px 0 0 var(--ink),
    -4px 0 0 0 var(--ink),
    4px 0 0 0 var(--ink);
  filter: drop-shadow(8px 8px 0 var(--leaf-3));
}

.id {
  grid-area: id;
  align-self: start;
  min-width: 0;
}

h1 {
  margin: 0 0 16px;
  font: 700 40px/1.15 var(--f-text);
  letter-spacing: -0.01em;
  color: var(--ink);
  text-shadow: 3px 3px 0 var(--leaf-2);
  /* Trim the line box to the capitals so the name starts exactly at the frame's top edge. */
  text-box: trim-both cap alphabetic;
}

.role {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--ink-2);
}

.role strong {
  color: var(--ink);
}

.role .sep {
  margin: 0 8px;
  color: var(--leaf-3);
}

.links {
  grid-area: links;
  align-self: end;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

/* Flex items so each row is exactly as tall as its buttons' outer edge. */
.links li {
  display: flex;
}

.links .btn {
  padding: 8px 11px 7px;
}

.links .ico {
  width: 16px;
  height: 16px;
}

.bio {
  grid-area: bio;
  margin-top: 40px;
}

.bio p + p {
  margin-top: 12px;
}

.bio strong {
  background: linear-gradient(transparent 58%, var(--leaf-2) 58%);
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 2px;
  padding: 8px 12px 7px;
  border: 0;
  font: 500 14px/1.1 var(--f-text);
  text-decoration: none;
  color: var(--ink);
  background: var(--paper);
  /* 2px notched border plus an inner bevel on the bottom-right edge. */
  box-shadow:
    0 -2px 0 0 var(--ink),
    0 2px 0 0 var(--ink),
    -2px 0 0 0 var(--ink),
    2px 0 0 0 var(--ink),
    inset -4px -4px 0 0 var(--leaf-2);
  cursor: pointer;
}

.btn:hover {
  color: var(--ink);
  background: var(--leaf-1);
}

.btn:active {
  transform: translate(0, 2px);
  box-shadow:
    0 -2px 0 0 var(--ink),
    0 2px 0 0 var(--ink),
    -2px 0 0 0 var(--ink),
    2px 0 0 0 var(--ink),
    inset 4px 4px 0 0 var(--leaf-2);
}

.btn-key {
  background: var(--leaf-3);
  box-shadow:
    0 -2px 0 0 var(--ink),
    0 2px 0 0 var(--ink),
    -2px 0 0 0 var(--ink),
    2px 0 0 0 var(--ink),
    inset -4px -4px 0 0 var(--leaf-4);
}

.btn-key:hover {
  background: var(--leaf-2);
}

.btn-sm {
  gap: 6px;
  padding: 6px 10px 5px;
  font-size: 13px;
  box-shadow:
    0 -2px 0 0 var(--ink),
    0 2px 0 0 var(--ink),
    -2px 0 0 0 var(--ink),
    2px 0 0 0 var(--ink),
    inset -3px -3px 0 0 var(--leaf-2);
}

/* ---------- Sections ---------- */

section {
  scroll-margin-top: 24px;
}

h2 {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 72px 0 20px;
  font: 600 18px/1.4 var(--f-text);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink);
}

h2::before {
  content: "";
  flex: none;
  width: 12px;
  height: 12px;
  background: var(--leaf-4);
  box-shadow: 4px 4px 0 0 var(--leaf-2);
}

h2::after {
  content: "";
  flex: 1;
  height: 4px;
  background: repeating-linear-gradient(90deg, var(--leaf-3) 0 4px, transparent 4px 12px);
}

/* ---------- News ---------- */

.news {
  margin: 0;
  padding: 0;
  list-style: none;
}

.news li {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 16px;
  padding: 6px 0;
}

.news time {
  font: 500 14px/1.7 var(--f-text);
  color: var(--leaf-5);
}

.more {
  margin-top: 6px;
}

.more summary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px 4px 2px;
  font: 500 14px/1.2 var(--f-text);
  color: var(--leaf-5);
  list-style: none;
  cursor: pointer;
}

.more summary::-webkit-details-marker {
  display: none;
}

.more summary:hover {
  background: var(--leaf-2);
  color: var(--ink);
}

.more summary .ico {
  width: 14px;
  height: 14px;
}

.more[open] summary .ico {
  transform: rotate(90deg);
}

.more .news {
  margin-top: 6px;
}

/* ---------- Research ---------- */

.theme + .theme {
  margin-top: 40px;
}

.theme h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font: 600 16px/1.4 var(--f-text);
  color: var(--leaf-5);
}

.theme h3 .ico {
  width: 14px;
  height: 14px;
  color: var(--leaf-4);
}

/* A quiet aside after a theme title. */
.theme-tag {
  position: relative;
  /* Puts the 13px text on the 16px title's baseline. */
  top: 1px;
  margin-left: 8px;
  font: 400 13px/1.4 var(--f-text);
  color: var(--ink-3);
}

.pub {
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr);
  gap: 20px;
  padding: 20px 0;
}

.pub + .pub {
  background: repeating-linear-gradient(90deg, var(--leaf-2) 0 4px, transparent 4px 8px) top left / 100% 2px no-repeat;
}

.venue {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  padding-top: 2px;
}

.badge {
  display: inline-block;
  padding: 4px 8px 3px;
  font: 600 13px/1.3 var(--f-text);
  white-space: nowrap;
  color: var(--ink);
  background: var(--leaf-2);
}

.year {
  padding-left: 2px;
  font: 500 13px/1.3 var(--f-text);
  color: var(--ink-3);
}

.award {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px 2px 6px;
  font: 600 12.5px/1.4 var(--f-text);
  color: #6b4a06;
  background: var(--gold-soft);
}

.award .ico {
  width: 12px;
  height: 12px;
  color: var(--gold);
}

.pub-body {
  min-width: 0;
}

.pub h4 {
  margin: 0;
  font: 600 15px/1.5 var(--f-text);
}

.pub h4 a {
  color: var(--ink);
  text-decoration: none;
}

.pub h4 a:hover {
  background: var(--leaf-2);
}

.authors {
  margin-top: 4px;
  font-size: 13.5px;
  color: var(--ink-2);
}

.authors b {
  color: var(--ink);
  background: linear-gradient(transparent 60%, var(--leaf-2) 60%);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 12px;
}

/* ---------- Open source ---------- */

.repos {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.repo {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 2px;
  padding: 18px 18px 16px;
  color: var(--ink);
  text-decoration: none;
  background: var(--paper);
  box-shadow:
    0 -2px 0 0 var(--ink),
    0 2px 0 0 var(--ink),
    -2px 0 0 0 var(--ink),
    2px 0 0 0 var(--ink),
    inset -4px -4px 0 0 var(--leaf-1);
  transition: transform 0.12s steps(2, end);
}

.repo:hover {
  color: var(--ink);
  background: var(--paper);
  transform: translate(-2px, -2px);
  filter: drop-shadow(6px 6px 0 var(--leaf-3));
}

.repo-name {
  display: flex;
  align-items: center;
  gap: 10px;
  font: 600 16px/1.4 var(--f-text);
}

.repo-name .ico {
  color: var(--leaf-4);
}

.repo-desc {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--ink-2);
}

.repo-go {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  padding-top: 4px;
  font: 500 13.5px/1.2 var(--f-text);
  color: var(--leaf-5);
}

.repo-go .ico {
  width: 14px;
  height: 14px;
}

/* ---------- Experience ---------- */

.cols {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
}

.col-title {
  margin: 0 0 12px;
  font: 600 16px/1.3 var(--f-text);
  color: var(--leaf-5);
}

.timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 28px;
  list-style: none;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  bottom: 18px;
  width: 4px;
  background: repeating-linear-gradient(var(--leaf-3) 0 4px, transparent 4px 8px);
}

.timeline li {
  position: relative;
  padding: 0 0 16px;
}

.timeline li::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 6px;
  width: 8px;
  height: 8px;
  background: var(--paper);
  box-shadow:
    0 -2px 0 0 var(--leaf-5),
    0 2px 0 0 var(--leaf-5),
    -2px 0 0 0 var(--leaf-5),
    2px 0 0 0 var(--leaf-5);
}

.timeline li.current::before {
  background: var(--leaf-4);
}

.when {
  display: block;
  font: 500 13.5px/1.5 var(--f-text);
  color: var(--leaf-5);
}

.what {
  display: block;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--ink-2);
}

.what b {
  display: block;
  color: var(--ink);
}

/* ---------- Footer ---------- */

/* main also carries .wrap, whose padding shorthand would zero this out without the extra class. */
main.wrap {
  width: 100%;
  padding-bottom: 96px;
}

.foot {
  margin-top: auto;
}

.scene {
  position: relative;
  max-width: var(--wrap);
  height: 64px;
  margin: 0 auto;
}

.scene .tree {
  position: absolute;
  bottom: -4px;
  shape-rendering: crispEdges;
}

.scene .t1 {
  left: 24px;
  width: 64px;
  height: 64px;
}

.scene .t2 {
  left: 92px;
  width: 40px;
  height: 40px;
}

.scene .t3 {
  right: 24px;
  width: 48px;
  height: 48px;
}

.ground {
  /* Grass blades on a darker band; a 16x8 tile drawn at 3x. */
  padding-top: 24px;
  background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 8' shape-rendering='crispEdges'%3E%3Cpath fill='%236f9f48' d='M3 1h1v1H3zM11 1h1v1h-1zM3 2h1v1H3zM7 2h1v1H7zM11 2h1v1h-1zM14 2h1v1h-1zM1 3h1v1H1zM3 3h2v1H3zM7 3h1v1H7zM10 3h2v1h-2zM14 3h1v1h-1zM1 4h4v1H1zM6 4h3v1H6zM10 4h3v1h-3zM14 4h2v1h-2zM0 5h16v1H0z'/%3E%3Cpath fill='%233b692b' d='M0 6h16v2H0z'/%3E%3C/svg%3E") repeat-x top left / 48px 24px,
    var(--leaf-2);
}

.foot-inner {
  display: flex;
  justify-content: space-between;
  gap: 8px 24px;
  flex-wrap: wrap;
  padding-top: 18px;
  padding-bottom: 22px;
  font: 500 13.5px/1.4 var(--f-text);
  color: var(--leaf-5);
}

/* ---------- Small screens ---------- */

/* Below this width the buttons would wrap beside the photo, so they move under it. */
@media (max-width: 820px) {
  .hero {
    grid-template-columns: 96px minmax(0, 1fr);
    grid-template-rows: auto auto auto;
    grid-template-areas:
      "photo id"
      "links links"
      "bio bio";
    column-gap: 22px;
    padding-top: 40px;
  }

  /* Top edges stay aligned: the photo frame meets the capitals of the name. */
  .avatar {
    width: 88px;
    height: 88px;
  }

  h1 {
    margin-bottom: 12px;
    font-size: 30px;
  }

  .links {
    margin-top: 28px;
  }

  .bio {
    margin-top: 28px;
  }
}

@media (max-width: 760px) {
  body {
    font-size: 14.5px;
  }

  h2 {
    margin-top: 56px;
    font-size: 16px;
  }

  .news li {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }

  .pub {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }

  /* The aside drops to its own line, under the title text. */
  .theme h3:has(.theme-tag) {
    flex-wrap: wrap;
    row-gap: 0;
  }

  .theme-tag {
    flex-basis: 100%;
    margin-left: 22px;
  }

  .venue {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
  }

  .repos,
  .cols {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 420px) {
  .wrap {
    padding: 0 16px;
  }
}

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

  *,
  *::before,
  *::after {
    transition: none !important;
  }
}