/* Homepage styles for _layouts/home.html (plain CSS, no Sass step). */

:root {
  --hx-bg: #f6f4ef;
  --hx-surface: #ffffff;
  --hx-ink: #0f1d2b;
  --hx-ink-soft: #33475a;
  --hx-muted: #66798a;
  --hx-line: rgba(15, 29, 43, 0.1);
  --hx-grid: rgba(15, 29, 43, 0.045);
  --hx-accent: #e8562a;
  --hx-accent-soft: rgba(232, 86, 42, 0.1);
  --hx-teal: #1a8197;
  --hx-teal-soft: rgba(31, 142, 163, 0.11);
  --hx-gold-bg: #fff0c7;
  --hx-gold-ink: #774700;
  --hx-shadow: 0 24px 60px -36px rgba(15, 29, 43, 0.45);
  --hx-serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, "Songti SC", "Noto Serif SC", serif;
  --hx-sans:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --hx-mono: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  --hx-radius: 18px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --hx-bg: #0b131c;
    --hx-surface: #111c27;
    --hx-ink: #e8eef3;
    --hx-ink-soft: #c2cfda;
    --hx-muted: #8d9dac;
    --hx-line: rgba(200, 220, 235, 0.12);
    --hx-grid: rgba(200, 220, 235, 0.04);
    --hx-accent: #ff8a5c;
    --hx-accent-soft: rgba(255, 138, 92, 0.13);
    --hx-teal: #6fd5e6;
    --hx-teal-soft: rgba(111, 213, 230, 0.12);
    --hx-gold-bg: rgba(255, 199, 104, 0.16);
    --hx-gold-ink: #ffd48a;
    --hx-shadow: 0 24px 60px -30px rgba(0, 0, 0, 0.8);
    color-scheme: dark;
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
  -webkit-text-size-adjust: 100%;
}

body.hx {
  margin: 0;
  color: var(--hx-ink);
  font-family: var(--hx-sans);
  font-size: 16px;
  line-height: 1.65;
  background-color: var(--hx-bg);
  background-image:
    linear-gradient(var(--hx-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--hx-grid) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: -1px -1px;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: var(--hx-teal);
  text-decoration: none;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--hx-accent);
  text-decoration: underline;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--hx-accent);
  outline-offset: 3px;
  border-radius: 6px;
}

::selection {
  color: #ffffff;
  background: var(--hx-accent);
}

.hx-wrap {
  width: min(1120px, calc(100% - 2.5rem));
  margin: 0 auto;
}

.hx-skip {
  position: absolute;
  top: -100px;
  left: 1rem;
  z-index: 100;
  padding: 0.5rem 1rem;
  color: #ffffff;
  background: var(--hx-ink);
  border-radius: 8px;
}

.hx-skip:focus {
  top: 1rem;
}

/* Navigation ---------------------------------------------------------------- */

.hx-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--hx-bg);
  background: color-mix(in srgb, var(--hx-bg) 82%, transparent);
  border-bottom: 1px solid var(--hx-line);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
}

.hx-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3.6rem;
}

.hx-nav__brand {
  color: var(--hx-ink);
  font-family: var(--hx-serif);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.hx-nav__brand span {
  margin-left: 0.25rem;
  color: var(--hx-muted);
  font-weight: 500;
}

.hx-nav__brand:hover {
  color: var(--hx-ink);
  text-decoration: none;
}

.hx-nav__links {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  overflow-x: auto;
  scrollbar-width: none;
}

.hx-nav__links::-webkit-scrollbar {
  display: none;
}

.hx-nav__links a {
  padding: 0.35rem 0.7rem;
  color: var(--hx-ink-soft);
  font-size: 0.92rem;
  font-weight: 500;
  white-space: nowrap;
  border-radius: 999px;
}

.hx-nav__links a:hover {
  color: var(--hx-ink);
  text-decoration: none;
  background: var(--hx-teal-soft);
}

.hx-nav__links .hx-nav__cta {
  margin-left: 0.35rem;
  color: #ffffff;
  font-weight: 650;
  background: var(--hx-ink);
}

.hx-nav__links .hx-nav__cta:hover {
  color: #ffffff;
  background: var(--hx-accent);
}

@media (prefers-color-scheme: dark) {
  .hx-nav__links .hx-nav__cta {
    color: #0b131c;
    background: var(--hx-teal);
  }
}

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

.hx-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
  padding: clamp(3rem, 9vh, 6.5rem) 0 clamp(3rem, 8vh, 5rem);
}

.hx-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 1.1rem;
  color: var(--hx-muted);
  font-family: var(--hx-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hx-dot {
  width: 0.55rem;
  height: 0.55rem;
  background: var(--hx-accent);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--hx-accent-soft);
}

.hx-hero__name {
  margin: 0;
  font-family: var(--hx-serif);
  font-size: clamp(3rem, 7.5vw, 5.4rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 0.98;
}

.hx-hero__name span {
  color: var(--hx-accent);
  font-size: 0.62em;
  font-weight: 600;
  letter-spacing: 0;
}

.hx-hero__role {
  margin: 1.1rem 0 0;
  color: var(--hx-ink-soft);
  font-size: 1.08rem;
  font-weight: 600;
  line-height: 1.5;
}

.hx-hero__bio {
  max-width: 38rem;
  margin-top: 1.25rem;
  color: var(--hx-ink-soft);
  font-size: 1.02rem;
  line-height: 1.75;
}

.hx-hero__bio p {
  margin: 0 0 0.85rem;
}

.hx-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.4rem 0 0;
  padding: 0;
  list-style: none;
}

.hx-links a {
  display: inline-flex;
  padding: 0.45rem 0.95rem;
  color: var(--hx-ink);
  font-size: 0.9rem;
  font-weight: 600;
  background: var(--hx-surface);
  border: 1px solid var(--hx-line);
  border-radius: 999px;
  transition:
    transform 0.15s ease,
    border-color 0.15s ease;
}

.hx-links a:hover {
  color: var(--hx-accent);
  text-decoration: none;
  border-color: var(--hx-accent);
  transform: translateY(-1px);
}

.hx-recruit {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  margin-top: 1.5rem;
  padding: 0.65rem 1.1rem 0.65rem 0.65rem;
  color: var(--hx-ink);
  background: var(--hx-surface);
  border: 1px solid var(--hx-line);
  border-left: 4px solid var(--hx-accent);
  border-radius: 14px;
  box-shadow: var(--hx-shadow);
  transition: transform 0.18s ease;
}

.hx-recruit:hover {
  color: var(--hx-ink);
  text-decoration: none;
  transform: translateY(-2px);
}

.hx-recruit img {
  width: 44px;
  height: 44px;
  border-radius: 10px;
}

.hx-recruit strong,
.hx-recruit small {
  display: block;
}

.hx-recruit small {
  color: var(--hx-muted);
  font-size: 0.85rem;
}

.hx-hero__photo {
  position: relative;
  margin: 0;
  padding: 8%;
}

.hx-hero__photo img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 28px;
  box-shadow: var(--hx-shadow);
}

.hx-flight {
  position: absolute;
  inset: 0;
  z-index: 2;
  width: 100%;
  height: 100%;
  overflow: visible;
  pointer-events: none;
}

.hx-flight__path {
  fill: none;
  stroke: var(--hx-accent);
  stroke-dasharray: 2 9;
  stroke-linecap: round;
  stroke-width: 2.4;
  opacity: 0.75;
}

.hx-flight__craft path {
  fill: var(--hx-accent);
  stroke: var(--hx-bg);
  stroke-width: 1.5;
}

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

.hx-section {
  display: grid;
  grid-template-columns: 12rem minmax(0, 1fr);
  gap: 2rem;
  padding: 3.25rem 0;
  border-top: 1px solid var(--hx-line);
}

.hx-section__label {
  position: sticky;
  top: 5rem;
  align-self: start;
}

.hx-section__label span {
  display: block;
  color: var(--hx-accent);
  font-family: var(--hx-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
}

.hx-section__label h2 {
  margin: 0.2rem 0 0;
  font-family: var(--hx-serif);
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

/* News */

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

.hx-news__item {
  display: grid;
  grid-template-columns: 6.5rem minmax(0, 1fr);
  gap: 1rem;
  padding: 0.95rem 0;
  border-bottom: 1px dashed var(--hx-line);
}

.hx-news__item:first-child {
  padding-top: 0.15rem;
}

.hx-news__item:last-child {
  border-bottom: 0;
}

.hx-news__meta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.35rem;
}

.hx-news__meta time {
  color: var(--hx-muted);
  font-family: var(--hx-mono);
  font-size: 0.82rem;
}

.hx-news__item p {
  margin: 0;
  color: var(--hx-ink-soft);
}

.hx-tag {
  padding: 0.08rem 0.5rem;
  color: var(--hx-teal);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--hx-teal-soft);
  border-radius: 999px;
}

.hx-tag--award {
  color: var(--hx-gold-ink);
  background: var(--hx-gold-bg);
}

.hx-tag--lab {
  color: var(--hx-accent);
  background: var(--hx-accent-soft);
}

/* Research */

.hx-research {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
  gap: 2rem;
  align-items: start;
}

.hx-research__text p {
  margin: 0 0 1.1rem;
  color: var(--hx-ink-soft);
  font-size: 1.02rem;
  line-height: 1.8;
}

.hx-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0 0 1.25rem;
  padding: 0;
  list-style: none;
}

.hx-chips li {
  padding: 0.3rem 0.75rem;
  color: var(--hx-ink);
  font-size: 0.86rem;
  font-weight: 550;
  background: var(--hx-surface);
  border: 1px solid var(--hx-line);
  border-radius: 999px;
}

.hx-arrow-link {
  font-weight: 650;
}

.hx-research__image {
  margin: 0;
}

.hx-research__image img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--hx-radius);
  box-shadow: var(--hx-shadow);
}

.hx-research__image figcaption,
.hx-more {
  margin-top: 0.65rem;
  color: var(--hx-muted);
  font-size: 0.85rem;
}

/* Publications */

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

.hx-pub {
  display: grid;
  grid-template-columns: 11rem minmax(0, 1fr);
  gap: 1.25rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--hx-line);
}

.hx-pub:first-child {
  padding-top: 0.2rem;
}

.hx-pub__thumb {
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--hx-surface);
  border: 1px solid var(--hx-line);
  border-radius: 12px;
}

.hx-pub__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.hx-pub:hover .hx-pub__thumb img {
  transform: scale(1.04);
}

.hx-pub__body h3 {
  margin: 0 0 0.25rem;
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.4;
}

.hx-pub__authors,
.hx-pub__venue,
.hx-pub__award,
.hx-pub__links {
  margin: 0 0 0.2rem;
  font-size: 0.9rem;
}

.hx-pub__authors {
  color: var(--hx-ink-soft);
}

.hx-pub__authors strong {
  color: var(--hx-ink);
  text-decoration: underline;
  text-decoration-color: var(--hx-accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 0.2em;
}

.hx-pub__venue {
  color: var(--hx-muted);
  font-style: italic;
}

.hx-pub__award {
  display: inline-block;
  margin: 0.25rem 0 0.35rem;
  padding: 0.15rem 0.6rem;
  color: var(--hx-gold-ink);
  font-size: 0.8rem;
  font-weight: 700;
  background: var(--hx-gold-bg);
  border-radius: 999px;
}

.hx-pub__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.45rem;
}

.hx-pub__links a {
  padding: 0.1rem 0.6rem;
  font-size: 0.78rem;
  font-weight: 650;
  border: 1px solid var(--hx-line);
  border-radius: 999px;
}

.hx-pub__links a:hover {
  color: #ffffff;
  text-decoration: none;
  background: var(--hx-teal);
  border-color: var(--hx-teal);
}

/* Projects */

.hx-projects {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.hx-projects a {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  height: 100%;
  padding: 1rem 1.05rem;
  color: var(--hx-ink-soft);
  background: var(--hx-surface);
  border: 1px solid var(--hx-line);
  border-radius: 14px;
  transition:
    transform 0.18s ease,
    border-color 0.18s ease;
}

.hx-projects a:hover {
  text-decoration: none;
  border-color: var(--hx-teal);
  transform: translateY(-2px);
}

.hx-projects strong {
  color: var(--hx-ink);
  font-size: 1rem;
}

.hx-projects strong::after {
  margin-left: 0.3rem;
  color: var(--hx-muted);
  font-weight: 400;
  content: "↗";
}

.hx-projects span {
  font-size: 0.88rem;
  line-height: 1.55;
}

/* Play */

.hx-games {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.hx-game {
  display: grid;
  grid-template-columns: 7.5rem minmax(0, 1fr);
  gap: 1.1rem;
  align-items: center;
  padding: 1rem;
  overflow: hidden;
  color: #eaf6fb;
  border-radius: var(--hx-radius);
  box-shadow: var(--hx-shadow);
  transition: transform 0.2s ease;
}

.hx-game:hover {
  color: #ffffff;
  text-decoration: none;
  transform: translateY(-3px);
}

.hx-game--soar {
  background:
    radial-gradient(circle at 15% 20%, rgba(255, 138, 74, 0.35), transparent 45%),
    linear-gradient(140deg, #0f3550 0%, #1a8197 100%);
}

.hx-game--orbit {
  background:
    radial-gradient(circle at 80% 0%, rgba(108, 232, 255, 0.25), transparent 45%),
    linear-gradient(140deg, #03060c 0%, #14233a 100%);
}

.hx-game__art {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1;
}

.hx-game__art img {
  width: 100%;
  border-radius: 16px;
  box-shadow: 0 12px 26px -12px rgba(0, 0, 0, 0.7);
}

/* Orbital Sweeper art: a planet with two orbits drawn in CSS. */
.hx-game--orbit .hx-game__art i {
  position: absolute;
  border-radius: 50%;
}

.hx-game--orbit .hx-game__art i:nth-child(1) {
  width: 44%;
  height: 44%;
  background: radial-gradient(circle at 35% 35%, #7fd4ff, #1d5f9a 55%, #0a2240 100%);
  box-shadow: 0 0 30px rgba(108, 232, 255, 0.45);
}

.hx-game--orbit .hx-game__art i:nth-child(2) {
  width: 92%;
  height: 36%;
  border: 2px solid rgba(108, 232, 255, 0.55);
  transform: rotate(-18deg);
}

.hx-game--orbit .hx-game__art i:nth-child(3) {
  top: 18%;
  right: 8%;
  width: 0.7rem;
  height: 0.7rem;
  background: #ffb454;
  box-shadow: 0 0 12px #ffb454;
  animation: hx-orbit 6s linear infinite;
}

@keyframes hx-orbit {
  from {
    transform: rotate(0deg) translateX(0.6rem) rotate(0deg);
  }

  to {
    transform: rotate(360deg) translateX(0.6rem) rotate(-360deg);
  }
}

.hx-game__body {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.hx-game__body small {
  color: rgba(234, 246, 251, 0.7);
  font-family: var(--hx-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hx-game__body strong {
  color: #ffffff;
  font-family: var(--hx-serif);
  font-size: 1.3rem;
  line-height: 1.2;
}

.hx-game__body > span {
  color: rgba(234, 246, 251, 0.82);
  font-size: 0.88rem;
  line-height: 1.55;
}

.hx-game__body em {
  margin-top: 0.3rem;
  color: #ffb27a;
  font-style: normal;
  font-weight: 700;
}

/* Beyond */

.hx-beyond__text {
  max-width: 44rem;
  margin: 0 0 1.25rem;
  color: var(--hx-ink-soft);
  font-size: 1.02rem;
  line-height: 1.8;
}

.hx-gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}

.hx-gallery figure {
  margin: 0;
  overflow: hidden;
  border-radius: 14px;
}

.hx-gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.hx-gallery figure:hover img {
  transform: scale(1.04);
}

/* Footer */

.hx-footer {
  margin-top: 2rem;
  padding: 2rem 0 2.5rem;
  color: var(--hx-muted);
  font-size: 0.88rem;
  border-top: 1px solid var(--hx-line);
}

.hx-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
}

/* Responsive ---------------------------------------------------------------- */

@media (max-width: 900px) {
  .hx-hero {
    grid-template-columns: 1fr;
  }

  .hx-hero__photo {
    order: -1;
    width: min(22rem, 80%);
    margin: 0 auto;
  }

  .hx-section {
    grid-template-columns: 1fr;
    gap: 1.1rem;
    padding: 2.5rem 0;
  }

  .hx-section__label {
    position: static;
  }

  .hx-research {
    grid-template-columns: 1fr;
  }

  .hx-projects {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hx-games {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .hx-wrap {
    width: calc(100% - 2rem);
  }

  .hx-nav__inner {
    flex-direction: column;
    align-items: stretch;
    gap: 0.1rem;
    padding: 0.55rem 0 0.4rem;
  }

  .hx-nav__links {
    margin: 0 -0.5rem;
    padding-right: 1.5rem;
    -webkit-mask-image: linear-gradient(90deg, #000 82%, transparent);
    mask-image: linear-gradient(90deg, #000 82%, transparent);
  }

  .hx-news__item {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .hx-news__meta {
    flex-direction: row;
    align-items: center;
  }

  .hx-pub {
    grid-template-columns: 1fr;
    gap: 0.7rem;
  }

  .hx-pub__thumb {
    max-width: 20rem;
  }

  .hx-projects,
  .hx-gallery {
    grid-template-columns: 1fr;
  }

  .hx-game {
    grid-template-columns: 5rem minmax(0, 1fr);
  }
}

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

  .hx-flight__craft,
  .hx-game--orbit .hx-game__art i:nth-child(3) {
    display: none;
  }

  .hx-links a,
  .hx-recruit,
  .hx-projects a,
  .hx-game,
  .hx-pub__thumb img,
  .hx-gallery img {
    transition: none;
  }
}