*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  color-scheme: light dark;

  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Cascadia Code", ui-monospace, monospace;

  --text:       light-dark(#1c1c1c, #d4d4d4);
  --text-dim:   light-dark(#6b6b6b, #858585);
  --bg:         light-dark(#fafafa, #111111);
  --bg-raised:  light-dark(#f0f0f0, #191919);
  --border:     light-dark(#e0e0e0, #2a2a2a);
  --accent:     light-dark(#1a1a1a, #e0e0e0);
  --accent-inv: light-dark(#fafafa, #111111);
  --code-bg:    light-dark(#f3f3f3, #161616);
  --tag-bg:     light-dark(#ededed, #222222);
  --tag-text:   light-dark(#555555, #999999);
  --link:       light-dark(#2563eb, #6b9eff);
  --link-hover: light-dark(#1d4ed8, #93b4ff);
  --contact-email: light-dark(#262626, #c8c8c8);

  --space-2xs: 0.125rem;
  --space-xs:  0.25rem;
  --space-sm:  0.5rem;
  --space-md:  0.75rem;
  --space-lg:  1.125rem;
  --space-xl:  1.75rem;

  --section-pad-y: clamp(0.72rem, 0.55rem + 0.52vw, 1.05rem);
  --section-pad-x: clamp(0.88rem, 0.56rem + 0.92vw, 1.25rem);
  --stack-gap: var(--space-md);
  --stack-gap-tight: var(--space-sm);
  --heading-gap: var(--space-sm);

  --w-wide:    min(100%, 72rem);

  --radius: 3px;
}

html {
  scroll-behavior: smooth;
  scrollbar-gutter: stable;
  font-size: clamp(1rem, 0.9rem + 0.45vw, 1.125rem);
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 {
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(1.625rem, 1.35rem + 1vw, 2rem); }
h2 { font-size: clamp(1.1875rem, 1.05rem + 0.55vw, 1.375rem); }
h3 { font-size: clamp(1.0625rem, 0.98rem + 0.3vw, 1.1875rem); }

a {
  color: var(--link);
  text-decoration: none;
  &:hover { color: var(--link-hover); }
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}
main {
  width: 100%;
  max-width: var(--w-wide);
  margin-inline: auto;
}

.section {
  padding: var(--section-pad-y) var(--section-pad-x);
  max-width: 42rem;
  margin-inline: auto;
}

.measure-narrow {
  max-width: min(52ch, 100%);
  margin-inline: auto;
  text-align: center;
}

.section-heading {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  margin-bottom: var(--heading-gap);
}

.section-heading--center {
  text-align: center;
  text-indent: 0.06em;
}

.section--flush {
  max-width: none;
  padding-inline: 0;
}

.project-screenshots-wrap.section--flush {
  padding-block-start: 0;
}

.section--intro {
  text-align: center;
  padding-bottom: var(--stack-gap-tight);
}

#about.section {
  padding-top: var(--stack-gap-tight);
  padding-bottom: var(--section-pad-y);
}

#past-work.section {
  padding-top: var(--section-pad-y);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  padding: var(--stack-gap-tight) var(--section-pad-x);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  max-width: var(--w-wide);
  margin-inline: auto;
}

.site-header__link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-dim);
  &:hover { color: var(--text); }
}

.intro-name {
  margin-bottom: var(--space-2xs);
}

.intro-role {
  font-size: 0.9375rem;
  color: var(--text-dim);
  font-weight: 400;
  letter-spacing: 0.02em;
}

.about-short {
  color: var(--text-dim);
  text-wrap: balance;
  font-size: 1.0625rem;
  line-height: 1.55;
}

.experience-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--stack-gap);
}

.experience-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-xs) var(--stack-gap-tight);
  margin-bottom: var(--space-2xs);
}

.experience-item__title {
  font-weight: 600;
  font-size: 1.0625rem;
}

.experience-item__company {
  color: var(--text-dim);
  font-weight: 400;
  &::before { content: "·"; margin-right: var(--space-sm); }
}

.experience-item__period {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-dim);
  margin-left: auto;
}

.experience-item__desc {
  color: var(--text-dim);
  font-size: 1rem;
  line-height: 1.55;
}

.section--project {
  text-align: center;
}

.section--project .section-heading a:hover {
  text-decoration: underline;
}

.project-desc {
  color: var(--text-dim);
  font-size: 1rem;
  line-height: 1.55;
  margin-bottom: var(--stack-gap-tight);
}

.project-meta {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--stack-gap-tight) var(--stack-gap);
  padding: var(--stack-gap-tight) var(--section-pad-x) 0;
}

.project-meta__links {
  display: flex;
  gap: var(--stack-gap);

  a {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 500;
  }
}

.project-screenshots-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--stack-gap-tight);
  width: 100%;
  max-width: var(--w-wide);
  margin-inline: auto;
  padding: 0 var(--section-pad-x);
}

.project-screenshots-grid__cell {
  position: relative;
  margin: 0;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-raised);
  border: 1px solid var(--border);
}

.project-screenshots-grid__open {
  position: absolute;
  inset: 0;
  display: block;
  padding: 0;
  margin: 0;
  border: 0;
  background: transparent;
  cursor: zoom-in;
  color: inherit;
  font: inherit;
  text-align: start;

  &:focus-visible {
    outline: 2px solid var(--link);
    outline-offset: 2px;
  }

  & img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    object-position: center;
  }
}

.screenshot-lightbox {
  position: fixed;
  inset: 0;
  margin: 0;
  padding: 0;
  border: none;
  background: transparent;
  width: 100vw;
  max-width: 100vw;
  height: 100dvh;
  max-height: 100dvh;
  box-sizing: border-box;

  &::backdrop {
    background: light-dark(rgba(0, 0, 0, 0.72), rgba(0, 0, 0, 0.88));
    cursor: zoom-out;
  }
}

.screenshot-lightbox__frame {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  width: 100%;
  height: 100%;
  min-height: 100dvh;
  padding: var(--space-xl);
}

.screenshot-lightbox__img {
  max-width: calc(100vw - 2 * var(--space-xl));
  max-height: calc(100dvh - 2 * var(--space-xl));
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius);
  box-shadow: 0 0.5rem 2rem rgba(0, 0, 0, 0.35);
}

.screenshot-lightbox__close {
  position: fixed;
  top: var(--space-md);
  right: var(--space-md);
  z-index: 1;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;

  &:hover {
    background: var(--bg-raised);
  }

  &:focus-visible {
    outline: 2px solid var(--link);
    outline-offset: 2px;
  }
}

.writing-preview-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--stack-gap);
}

.writing-preview-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--stack-gap);
  padding-bottom: var(--stack-gap);
  border-bottom: 1px solid var(--border);

  &:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }
}

.writing-preview-item__link {
  font-weight: 500;
  font-size: 1.0625rem;
  color: var(--text);
  &:hover { color: var(--link); }
}

.writing-preview-item__date {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-dim);
  white-space: nowrap;
}

.writing-more {
  margin-top: var(--stack-gap);
  font-size: 0.875rem;

  a {
    color: var(--text-dim);
    &:hover { color: var(--text); }
  }
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 1px 0.375rem;
  background: var(--tag-bg);
  color: var(--tag-text);
  border-radius: 2px;
}
.contact-inner {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: var(--stack-gap);
  width: 100%;
}

.contact .section-heading {
  margin-bottom: 0;
  text-align: center;
}

.contact-links {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  column-gap: var(--stack-gap-tight);
  row-gap: var(--stack-gap-tight);
  width: 100%;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  padding: var(--space-sm);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: background-color 0.15s, color 0.15s, border-color 0.15s;
  &:hover {
    background: var(--accent);
    color: var(--accent-inv);
    border-color: var(--accent);
  }
}

.contact-link--github {
  color: light-dark(#1f2328, #f6f8fa);
}

.contact-link--email {
  color: var(--contact-email);
}

.contact-link--linkedin:hover .contact-link__icon path {
  fill: #0a66c2;
}

.contact-link__icon {
  display: block;
  width: 1.375rem;
  height: 1.375rem;
}

.contact-links__slot {
  min-width: 0;
  display: flex;
  align-items: center;
}

.contact-links__slot--start {
  justify-content: flex-end;
}

.contact-links__slot--center {
  justify-content: center;
}

.contact-links__slot--end {
  justify-content: flex-start;
}
.blog-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--stack-gap);
}

.blog-preview {
  padding-bottom: var(--stack-gap);
  border-bottom: 1px solid var(--border);

  &:last-child { border-bottom: none; }

  h2 {
    margin-bottom: var(--space-2xs);
    a { color: var(--text); &:hover { color: var(--link); } }
  }

  time {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--text-dim);
  }

  p {
    color: var(--text-dim);
    margin-top: var(--space-xs);
    font-size: 1rem;
  }

  .post-tags {
    display: flex;
    gap: var(--space-xs);
    margin-top: var(--space-xs);
  }
}
.post {
  max-width: 42rem;
  margin-inline: auto;
  padding: var(--section-pad-y) var(--section-pad-x);
}

.post-header {
  margin-bottom: var(--stack-gap);

  h1 { margin-bottom: var(--space-2xs); }

  time {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--text-dim);
  }

  .post-tags {
    display: flex;
    gap: var(--space-xs);
    margin-top: var(--heading-gap);
  }
}

.post-content {
  h2 {
    margin-top: var(--space-lg);
    margin-bottom: var(--space-xs);
  }

  h3 {
    margin-top: var(--stack-gap);
    margin-bottom: var(--space-xs);
  }

  p { margin-bottom: var(--stack-gap-tight); }

  ul, ol {
    margin-bottom: var(--stack-gap-tight);
    padding-left: var(--space-lg);
  }

  li { margin-bottom: var(--space-xs); }

  blockquote {
    border-left: 2px solid var(--border);
    padding-left: var(--stack-gap);
    margin: var(--stack-gap) 0;
    color: var(--text-dim);
  }

  pre {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: var(--stack-gap-tight) var(--stack-gap);
    overflow-x: auto;
    margin: var(--stack-gap) 0;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.6;

    & > code {
      font-size: 1em;
      font-family: inherit;
      background: transparent;
      padding: 0;
      border-radius: 0;
    }
  }

  code {
    font-family: var(--font-mono);
    font-size: 0.875em;
  }

  :not(pre) > code {
    background: var(--code-bg);
    padding: 1px 5px;
    border-radius: 2px;
    font-size: 0.875rem;
  }

  img {
    border-radius: var(--radius);
    margin: var(--stack-gap) 0;
  }

  p:has(> .katex-display:only-child) {
    line-height: 1;
    margin-block: var(--stack-gap);
  }

  p:has(> .katex-display:only-child) > .katex-display {
    margin-block: 0;
  }

  .katex {
    line-height: 1.2;
    color: var(--text);
  }

  .katex-display {
    display: block;
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
    padding-block: var(--space-sm);
    text-align: center;
  }

  .katex-display > .katex {
    margin-inline: auto;
  }

  code[class*="language-"],
  pre[class*="language-"] {
    text-shadow: none;
    direction: ltr;
    text-align: left;
    white-space: pre;
    word-spacing: normal;
    word-break: normal;
    tab-size: 4;
    hyphens: none;
  }

  pre[class*="language-"],
  pre[class*="language-"] > code {
    color: light-dark(#24292e, #abb2bf);
  }

  .token.comment,
  .token.prolog,
  .token.doctype,
  .token.cdata {
    color: light-dark(#6a737d, #5c6370);
    font-style: italic;
  }

  .token.punctuation {
    color: light-dark(#24292e, #abb2bf);
  }

  .token.property,
  .token.tag,
  .token.boolean,
  .token.number,
  .token.constant,
  .token.symbol,
  .token.deleted {
    color: light-dark(#d73a49, #e06c75);
  }

  .token.selector,
  .token.attr-name,
  .token.string,
  .token.char,
  .token.builtin,
  .token.inserted {
    color: light-dark(#22863a, #98c379);
  }

  .token.operator,
  .token.entity,
  .token.url,
  .language-css .token.string,
  .style .token.string {
    color: light-dark(#005cc5, #56b6c2);
  }

  .token.atrule,
  .token.attr-value,
  .token.keyword {
    color: light-dark(#d73a49, #c678dd);
  }

  .token.function,
  .token.class-name {
    color: light-dark(#6f42c1, #61afef);
  }

  .token.regex,
  .token.important,
  .token.variable {
    color: light-dark(#e36209, #d19a66);
  }

  .token.important,
  .token.bold {
    font-weight: bold;
  }

  .token.italic {
    font-style: italic;
  }
}

.site-footer {
  text-align: center;
  padding: var(--section-pad-y) var(--section-pad-x);
  color: var(--text-dim);
  font-size: 0.8125rem;
  border-top: 1px solid var(--border);
  max-width: var(--w-wide);
  margin-inline: auto;
}

@media (width <= 640px) {
  .experience-item__period {
    margin-left: 0;
    width: 100%;
  }

  .writing-preview-item {
    flex-direction: column;
    gap: 0;
  }

  .contact-links {
    grid-template-columns: repeat(3, auto);
    justify-content: center;
  }

  .contact-links__slot--start,
  .contact-links__slot--center,
  .contact-links__slot--end {
    justify-content: center;
  }
}