@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,100..900;1,9..144,100..900&family=Inter:wght@100..900&display=swap');

/* ── Tokens ──────────────────────────────────────────── */

:root {
  --bg:        oklch(97% 0.007 85);
  --ink:       oklch(8% 0 0);
  --ink-2:     oklch(40% 0 0);
  --ink-3:     oklch(63% 0 0);
  --border:    oklch(88% 0.007 85);
  --code-bg:   oklch(91% 0.008 85);
  --code-dark: oklch(13% 0 0);
  --hover-bg:  oklch(93% 0 0);
  --accent:    #022f63;

  --serif: 'Fraunces', Georgia, serif;
  --sans:  'Inter', system-ui, sans-serif;
  --mono:  'SF Mono', 'Fira Code', ui-monospace, monospace;

  --column: 760px;
  --wide:   1100px;

  color-scheme: light;
}

[data-theme="dark"] {
  --bg:        #010409;
  --ink:       oklch(93% 0.005 85);
  --ink-2:     oklch(68% 0.003 85);
  --ink-3:     oklch(46% 0.003 85);
  --border:    oklch(24% 0.006 75);
  --code-bg:   oklch(19% 0.006 75);
  --code-dark: oklch(10% 0.004 75);
  --hover-bg:  oklch(20% 0.007 75);
  --accent:    #79c0ff;
  color-scheme: dark;
}

/* ── Reset ───────────────────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease; }

::selection { background-color: #7ee887; color: #0d1117; }

html {
  font-size: 18px;
  scroll-behavior: smooth;
  hanging-punctuation: first last;
}

body {
  background-color: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}

/* ── Layout ──────────────────────────────────────────── */

.container { max-width: var(--wide); margin-inline: auto; padding-inline: 2rem; }
.column    { max-width: var(--column); margin-inline: auto; padding-inline: 2rem; }

.home-sections {
  max-width: var(--wide);
  margin-inline: auto;
  padding-inline: 2rem;
  margin-block: 4rem 6rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 4rem;

  @media (width < 768px) {
    grid-template-columns: 1fr;
    gap: 4rem;
  }
}

/* Home page fits the viewport — no page-level scroll */
body:has(.home-sections) {
  height: 100dvh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

body:has(.home-sections) main {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

body:has(.home-sections) .home-sections {
  flex: 1;
  min-height: 0;
}

.home-section {
  overflow-y: auto;
  scrollbar-width: none;
}

/* ── Nav ─────────────────────────────────────────────── */

nav {
  border-bottom: 1px solid var(--border);
  padding-inline: 1rem;
}

.nav-inner {
  max-width: var(--wide);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav-logo { display: flex; align-items: center; gap: 0.5rem; color: var(--ink); }

@media (width < 768px) {
  .nav-logo-text { display: none; }
}

.nav-logo-text {
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.nav-links { display: flex; gap: 2rem; list-style: none; }

.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: lowercase;
  color: var(--ink-3);
  transition: color 0.15s;
}

.nav-links a:hover,
.nav-links a.active { color: var(--ink); }

.nav-end { display: flex; align-items: center; gap: 1.5rem; }

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--ink-3);
  padding: 0;
  display: flex;
  align-items: center;
  line-height: 0;
  transition: color 0.15s;
}

.theme-toggle:hover { color: var(--ink); }

.icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: none; }
[data-theme="dark"] .icon-sun  { display: block; }

/* ── Home intro ──────────────────────────────────────── */

.home-intro {
  max-width: var(--wide);
  margin-inline: auto;
  padding: 3rem 2rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.home-intro p { font-size: 0.9rem; color: var(--ink-2); max-width: 52ch; }

.home-intro-links { display: flex; align-items: center; gap: 1.5rem; }

.home-intro-links a {
  display: flex;
  align-items: center;
  color: var(--ink-3);
  transition: color 0.15s;
}

.home-intro-links a:hover { color: var(--ink); }

/* ── Section header ──────────────────────────────────── */

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  padding-block-end: 0.75rem;
  position: sticky;
  top: 0;
  background-color: var(--bg);
  z-index: 1;
}

.section-header h2 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.section-header a {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: lowercase;
  color: var(--ink-3);
  border-bottom: 1px solid var(--border);
  padding-block-end: 1px;
  transition: color 0.15s, border-color 0.15s;
}

.section-header a:hover { color: var(--ink); border-color: var(--ink); }

/* ── Post & project lists ────────────────────────────── */

.post-list,
.project-list,
.blog-list-full { list-style: none; }

.post-item,
.project-item {
  padding-block: 1.75rem;
  border-bottom: 1px solid var(--border);
}

.post-item:first-child,
.project-item:first-child { padding-block-start: 1.5rem; }

.post-meta {
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-block-end: 0.5rem;
}

.post-title {
  font-family: var(--serif);
  font-optical-sizing: auto;
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.3;
  margin-block-end: 0.4rem;
  transition: opacity 0.15s;
  text-wrap: balance;
}

.post-item a:hover,
.project-item a:hover { opacity: 0.6; }

.post-excerpt {
  font-size: 0.85rem;
  color: var(--ink-2);
  line-height: 1.6;
  overflow: hidden;
  display: -webkit-box;
  line-clamp: 2;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.project-item a { display: block; transition: opacity 0.15s; }

.project-name {
  font-family: var(--serif);
  font-optical-sizing: auto;
  font-size: 1.1rem;
  font-weight: 700;
  margin-block-end: 0.35rem;
}

.project-desc { font-size: 0.85rem; color: var(--ink-2); line-height: 1.6; }

.project-tags { margin-block-start: 0.6rem; display: flex; flex-wrap: wrap; gap: 0.4rem; }

.tag {
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-3);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 2px;
}

/* ── Page header ─────────────────────────────────────── */

.page-header {
  padding-block: 4rem 3rem;
  border-bottom: 1px solid var(--border);
}

.page-header h1 {
  font-family: var(--serif);
  font-optical-sizing: auto;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  text-wrap: balance;
}

.page-header p { margin-block-start: 0.75rem; font-size: 0.9rem; color: var(--ink-2); }

/* ── About ───────────────────────────────────────────── */

.post-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-block-start: 0.75rem; }

.about-body { padding-block: 2.5rem; }
.about-body p { color: var(--ink-2); line-height: 1.8; max-width: 52ch; margin-block-end: 2rem; }
.about-links { display: flex; gap: 1.5rem; }
.about-links a {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-3);
  transition: color 0.15s;
}

.home-intro img,
.about-body img {
  max-height: 10vh;
}

.about-links a:hover { color: var(--ink); }

.about-trivia { padding-block: 2.5rem; border-top: 1px solid var(--border); }
.about-trivia h2 { font-family: var(--serif); font-size: 1.3rem; font-weight: 700; margin-block-end: 0.75rem; }
.about-trivia > p { color: var(--ink-2); font-size: 0.9rem; margin-block-end: 1.5rem; }
.about-trivia ol { padding-inline-start: 1.25rem; color: var(--ink-2); line-height: 1.8; }
.about-trivia li { margin-block-end: 0.75rem; font-size: 0.95rem; }
.about-footnote { margin-block-start: 1.5rem; font-size: 0.8rem; color: var(--ink-3); }

/* ── Blog full list ──────────────────────────────────── */

.blog-list-full { max-width: var(--column); }
.blog-list-full .post-item { padding-block: 2.5rem; }
.blog-list-full .post-title { font-size: 1.4rem; }

/* ── Portfolio grid ──────────────────────────────────── */

.portfolio-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  border-block-start: 1px solid var(--border);
  border-inline-start: 1px solid var(--border);
  margin-block-start: 2rem;
}

.portfolio-card {
  border-inline-end: 1px solid var(--border);
  border-block-end: 1px solid var(--border);
  padding: 2rem;
  transition: background-color 0.15s;
}

.portfolio-card:hover { background-color: var(--hover-bg); }
.portfolio-card a { display: block; }
.portfolio-card .project-name { font-size: 1.2rem; }

.project-year {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-block-end: 0.5rem;
}

/* ── Notes ───────────────────────────────────────────── */

.notes-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-block-start: 2rem;
  margin-block-end: 6rem;

  @media (width < 900px) { grid-template-columns: repeat(2, 1fr); }
  @media (width < 600px) { grid-template-columns: 1fr; }
}

.note-card {
  border: 1px solid var(--border);
  overflow: hidden;
}

.note-card-header {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  height: 130px;
  padding: 1rem 1.25rem;
  background-color: var(--code-bg);
  text-decoration: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: background-color 0.15s;
}

.note-card-header:hover { background-color: var(--hover-bg); }
.note-card-header + .note-card-body { border-top: 1px solid var(--border); }

.note-bg-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  color: var(--ink-3);
  opacity: 0.5;
}

.note-subtitle {
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-block-end: 0.3rem;
  position: relative;
  z-index: 1;
}

.note-title {
  font-family: var(--serif);
  font-optical-sizing: auto;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.2;
  position: relative;
  z-index: 1;
}

.note-card-body {
  padding: 1rem 1.25rem;
}

.note-card-body p {
  font-size: 0.85rem;
  color: var(--ink-2);
  line-height: 1.7;
}

/* ── Article ─────────────────────────────────────────── */

.article-header {
  padding-block: 4rem 3rem;
  border-bottom: 1px solid var(--border);
  margin-block-end: 3rem;
}

.article-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-block-end: 0.75rem;
}
.article-meta-row .post-tags { margin-block-start: 0; }
.article-header h1 { margin-block-end: 0.5rem; }

.article-header .tag {
  border: none;
  padding: 0;
  border-radius: 0;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--ink-3);
}
.article-header .tag::before { content: "#"; }

.article-header h1 {
  font-family: var(--serif);
  font-optical-sizing: auto;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  max-width: 22ch;
  margin-block-end: 1rem;
  text-wrap: balance;
}

.lede {
  font-family: var(--serif);
  font-optical-sizing: auto;
  font-size: 1.1rem;
  font-style: italic;
  color: var(--ink-2);
  max-width: 42ch;
  line-height: 1.6;
  text-wrap: pretty;
}

.article-body { padding-block-end: 6rem; }

.article-body p { margin-block-end: 1.5rem; line-height: 1.8; text-wrap: pretty; }

.article-body a { color: var(--accent); text-decoration: underline; text-decoration-color: color-mix(in oklch, var(--accent) 40%, transparent); text-underline-offset: 3px; transition: text-decoration-color 0.15s; }
.article-body a:hover { text-decoration-color: var(--accent); }

.article-body :is(h2, h3) {
  font-family: var(--serif);
  font-optical-sizing: auto;
  font-weight: 700;
  text-wrap: balance;
}

.article-body h2 { font-size: 1.5rem; margin-block: 2.5rem 1rem; letter-spacing: -0.01em; }
.article-body h3 { font-size: 1.15rem; margin-block: 2rem 0.75rem; }

.article-body :is(ul, ol) { padding-inline-start: 1.5rem; margin-block-end: 1.5rem; }
.article-body li { margin-block-end: 0.4rem; line-height: 1.7; }

.article-body blockquote {
  border-inline-start: 3px solid var(--ink);
  padding-inline-start: 1.5rem;
  margin-block: 2rem;
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.2rem;
  color: var(--ink-2);
  line-height: 1.6;
}

.article-body code {
  font-family: var(--mono);
  font-size: 0.85em;
  background-color: var(--code-bg);
  padding: 2px 6px;
  border-radius: 3px;
}

.article-body pre {
  background-color: var(--code-dark);
  color: var(--code-bg);
  padding: 1.5rem;
  border-radius: 4px;
  overflow-x: auto;
  margin-block: 2rem;
}

.article-body pre code { background-color: transparent; padding: 0; font-size: 0.85rem; }

.article-back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-block-start: 75px;
  margin-block-end: 2rem;
  transition: color 0.15s;
}

.article-back:hover { color: var(--ink); }

/* ── Footer ──────────────────────────────────────────── */

footer { border-top: 1px solid var(--border); padding: 2.5rem 2rem; }

.footer-inner {
  max-width: var(--wide);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-inner p { font-size: 0.78rem; color: var(--ink-3); letter-spacing: 0.04em; }

.footer-links { display: flex; gap: 1.5rem; list-style: none; }

.footer-links a {
  font-size: 0.78rem;
  color: var(--ink-3);
  letter-spacing: 0.04em;
  transition: color 0.15s;
}

.footer-links a:hover { color: var(--ink); }

/* ── Syntax highlighting ─────────────────────────────── */

.shiki { border-radius: 4px; overflow-x: auto; padding: 1.5rem; margin-block: 2rem; background-color: var(--shiki-light-bg) !important; }
.shiki code { font-family: var(--mono); font-size: 0.85rem; }
.shiki span { color: var(--shiki-light); }
[data-theme="dark"] .shiki { background-color: var(--shiki-dark-bg) !important; }
[data-theme="dark"] .shiki span { color: var(--shiki-dark); }