/* ============================================================
   site.css - clean editorial theme
   ============================================================ */

:root {
  --bg: #ffffff;
  --bg-soft: #f7f7f7;
  --fg: #0d0d0d;
  --fg-soft: #5d5d5d;
  --fg-faint: #8a8a8a;
  --line: #e6e6e6;
  --line-strong: #d0d0d0;
  --accent: #0d0d0d;
  --max: 1080px;
  --measure: 680px;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", sans-serif;
}

:root[data-theme="dark"] {
  --bg: #0d0d0d;
  --bg-soft: #171717;
  --fg: #f2f2f2;
  --fg-soft: #b0b0b0;
  --fg-faint: #7d7d7d;
  --line: #262626;
  --line-strong: #333333;
  --accent: #f2f2f2;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

::selection { background: var(--fg); color: var(--bg); }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 32px;
}

.narrow { max-width: calc(var(--measure) + 64px); }

/* ---------- masthead ---------- */
.masthead {
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  z-index: 50;
}
.masthead__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.wordmark {
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -0.01em;
}
.masthead nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.masthead nav a {
  font-size: 15px;
  color: var(--fg-soft);
  transition: color .15s ease;
}
.masthead nav a:hover { color: var(--fg); }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin-right: -6px;
  border-radius: 999px;
  color: var(--fg-soft);
  cursor: pointer;
  transition: background .15s ease, color .15s ease;
}
.theme-toggle:hover { background: var(--bg-soft); color: var(--fg); }
.theme-toggle svg { display: block; }

/* ---------- hero ---------- */
.hero {
  padding: 96px 0 56px;
}
.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  font-weight: 600;
  margin: 0 0 24px;
}
.hero p {
  font-size: 1.15rem;
  line-height: 1.6;
  color: var(--fg-soft);
  max-width: 640px;
  margin: 0 0 28px;
}
.hero .more {
  font-size: 15px;
  font-weight: 500;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 2px;
  transition: border-color .15s ease;
}
.hero .more:hover { border-color: var(--fg); }

/* ---------- section shell ---------- */
.section { padding: 8px 0 72px; }
.section__title {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-faint);
  margin: 0 0 40px;
}

/* ---------- article list ---------- */
.entries { border-top: 1px solid var(--line); }
.section .entries { border-top: none; }
.entry {
  display: block;
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
  transition: opacity .15s ease;
}
.entry:hover .entry__title { text-decoration: underline; text-underline-offset: 3px; }
.entry__eyebrow {
  font-size: 13px;
  color: var(--fg-faint);
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 12px;
}
.entry__eyebrow .tag {
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  color: var(--fg-soft);
}
.entry__title {
  font-size: 1.5rem;
  line-height: 1.25;
  letter-spacing: -0.02em;
  font-weight: 600;
  margin: 0 0 10px;
  max-width: 720px;
}
.entry__excerpt {
  color: var(--fg-soft);
  font-size: 1rem;
  line-height: 1.6;
  margin: 0;
  max-width: 640px;
  overflow-wrap: anywhere;
}
.draft-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--bg);
  background: var(--fg-faint);
  padding: 2px 6px;
  border-radius: 4px;
  vertical-align: middle;
}

.index-more {
  margin-top: 40px;
  font-size: 15px;
  font-weight: 500;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 2px;
  display: inline-block;
}
.index-more:hover { border-color: var(--fg); }

/* ---------- work list ---------- */
.work {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px 48px;
}
.work__item h3 {
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  font-weight: 600;
  margin: 0 0 4px;
}
.work__item .stack {
  font-size: 13px;
  color: var(--fg-faint);
  margin: 0 0 10px;
}
.work__item p {
  color: var(--fg-soft);
  font-size: 0.98rem;
  line-height: 1.6;
  margin: 0;
}

/* ---------- page header (list / about) ---------- */
.page-head {
  padding: 88px 0 48px;
  border-bottom: 1px solid var(--line);
}
.page-head h1 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-weight: 600;
  margin: 0;
}
.page-head p {
  color: var(--fg-soft);
  font-size: 1.1rem;
  margin: 16px 0 0;
}

/* ---------- article ---------- */
.article { padding: 72px 0 96px; }
.article__header { max-width: var(--measure); margin: 0 auto 48px; }
.article__meta {
  font-size: 14px;
  color: var(--fg-faint);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin-bottom: 20px;
}
.article__meta a { color: var(--fg-soft); }
.article__meta a:hover { color: var(--fg); }
.article__header h1 {
  font-size: clamp(2rem, 4.4vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-weight: 600;
  margin: 0;
}

.prose {
  max-width: var(--measure);
  margin: 0 auto;
  font-size: 1.12rem;
  line-height: 1.75;
}
.prose > *:first-child { margin-top: 0; }
.prose h1, .prose h2, .prose h3, .prose h4 {
  letter-spacing: -0.02em;
  line-height: 1.25;
  font-weight: 600;
  margin: 2em 0 0.7em;
}
.prose h1 { font-size: 1.9rem; }
.prose h2 { font-size: 1.5rem; }
.prose h3 { font-size: 1.22rem; }
.prose h4 { font-size: 1.05rem; }
.prose p { margin: 0 0 1.4em; }
.prose a {
  text-decoration: underline;
  text-decoration-color: var(--line-strong);
  text-underline-offset: 3px;
  transition: text-decoration-color .15s ease;
}
.prose a:hover { text-decoration-color: var(--fg); }
.prose ul, .prose ol { margin: 0 0 1.4em; padding-left: 1.3em; }
.prose li { margin: 0.4em 0; }
.prose img {
  margin: 2em auto;
  border-radius: 10px;
  border: 1px solid var(--line);
}
.prose figure { margin: 2em 0; }
.prose figure figcaption {
  font-size: 0.9rem;
  color: var(--fg-faint);
  text-align: center;
  margin-top: 0.6em;
}
.prose blockquote {
  margin: 1.6em 0;
  padding: 0.2em 0 0.2em 1.4em;
  border-left: 2px solid var(--line-strong);
  color: var(--fg-soft);
  font-style: normal;
}
.prose blockquote p { margin: 0.4em 0; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 3em 0; }

.prose code {
  font-family: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, monospace;
  font-size: 0.88em;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 1px 5px;
}
.prose pre {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px;
  overflow-x: auto;
  margin: 1.8em 0;
  font-size: 0.92rem;
  line-height: 1.6;
}
.prose pre code { background: none; border: 0; padding: 0; font-size: inherit; }
.highlight { margin: 1.8em 0; }
.highlight pre { margin: 0; }
.highlight table { display: block; overflow-x: auto; width: 100%; border-collapse: collapse; }
.highlight table td { padding: 0; border: 0; }
.highlight .lnt, .highlight .ln { color: var(--fg-faint); user-select: none; }

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.8em 0;
  font-size: 0.98rem;
  display: block;
  overflow-x: auto;
}
.prose th, .prose td {
  border-bottom: 1px solid var(--line);
  padding: 10px 14px;
  text-align: left;
}
.prose th { font-weight: 600; border-bottom-color: var(--line-strong); }

.article { padding-bottom: 120px; }

/* ---------- about ---------- */
.about-intro {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
  padding: 72px 0 0;
}
.about-intro img {
  width: 96px;
  height: 96px;
  border-radius: 999px;
  object-fit: cover;
  object-position: 82% 10%;
}
.about-intro h1 {
  font-size: clamp(1.8rem, 3.6vw, 2.4rem);
  letter-spacing: -0.03em;
  font-weight: 600;
  margin: 0;
}
.about-body { padding-top: 8px; padding-bottom: 120px; }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 40px 0;
  margin-top: 0;
}
.site-footer__inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 14px;
  color: var(--fg-faint);
}
.site-footer a { color: var(--fg-faint); transition: color .15s ease; }
.site-footer a:hover { color: var(--fg); }
.site-footer nav { display: flex; gap: 20px; flex-wrap: wrap; }

/* ---------- responsive ---------- */
@media (max-width: 720px) {
  body { font-size: 16px; }
  .wrap { padding: 0 20px; }
  .hero { padding: 64px 0 48px; }
  .section { padding: 56px 0; }
  .work { grid-template-columns: 1fr; gap: 32px; }
  .masthead nav { gap: 18px; }
  .masthead nav a { font-size: 14px; }
  .entry__title { font-size: 1.3rem; }
}