/* Shared stylesheet. Dark is the default theme; [data-theme="light"] overrides it. */
:root {
  --bg: #14171A;
  --surface: #1B1F23;
  --fg: #E6E3DC;
  --muted: #9AA0A6;
  --rule: #2A2F34;
  --accent: #40C9BD;
  --on-accent: #0F1416;
  --brass: #C7A46B;
  --font-body: "Newsreader", Georgia, "Times New Roman", serif;
  --font-ui: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  color-scheme: dark;
}
:root[data-theme="light"] {
  --bg: #FAF8F4;
  --surface: #F2EFE8;
  --fg: #1F2328;
  --muted: #6B6F76;
  --rule: #E3DFD6;
  --accent: #0B7F7A;
  --on-accent: #FFFFFF;
  --brass: #A07C45;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; font-size: 112.5%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
img { max-width: 100%; height: auto; }

/* ---------- header ---------- */
.header {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px 28px;
  padding: 20px max(24px, env(safe-area-inset-right, 0px)) 20px max(24px, env(safe-area-inset-left, 0px));
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-ui);
}
.brand { font-family: var(--font-body); font-weight: 600; font-size: 1.2rem; color: var(--fg); text-decoration: none; letter-spacing: .01em; margin-right: auto; }
.nav { display: flex; flex-wrap: wrap; gap: 2px 22px; font-size: .84rem; }
.nav a { color: var(--muted); text-decoration: none; padding: 4px 0; border-bottom: 1.5px solid transparent; }
.nav a:hover { color: var(--fg); }
.nav a[aria-current="page"] { color: var(--fg); border-bottom-color: var(--accent); }
.theme-toggle { background: none; border: 1px solid var(--rule); color: var(--muted); border-radius: 50%; width: 34px; height: 34px; display: grid; place-items: center; cursor: pointer; padding: 0; }
.theme-toggle:hover { color: var(--fg); border-color: var(--muted); }
.icon-sun { display: block; }
.icon-moon { display: none; }
:root[data-theme="light"] .icon-sun { display: none; }
:root[data-theme="light"] .icon-moon { display: block; }

/* ---------- page + prose ---------- */
.page { flex: 1; padding: 56px max(24px, env(safe-area-inset-right, 0px)) 80px max(24px, env(safe-area-inset-left, 0px)); }
.prose { max-width: 680px; margin: 0 auto; min-width: 0; }
.with-toc { display: grid; grid-template-columns: minmax(0, 680px) 180px; gap: 64px; justify-content: center; }
.with-toc .prose { margin: 0; }

.eyebrow { font: 500 .72rem/1 var(--font-ui); letter-spacing: .12em; text-transform: uppercase; color: var(--accent); margin: 0 0 14px; }
.byline { font: .84rem/1.4 var(--font-ui); color: var(--muted); margin: 0 0 32px; }

h1, h2, h3, h4 { font-family: var(--font-body); color: var(--fg); text-wrap: balance; scroll-margin-top: 24px; }
h1 { font-weight: 500; font-size: 2.3rem; line-height: 1.15; letter-spacing: -.01em; margin: 0 0 .5em; }
h2 { font-weight: 600; font-size: 1.4rem; line-height: 1.3; margin: 2.2em 0 .8em; padding-bottom: .4em; border-bottom: 1px solid var(--rule); }
h3 { font-weight: 600; font-size: 1.2rem; line-height: 1.35; margin: 1.8em 0 .5em; }
h4 { font-weight: 600; font-size: 1.05rem; margin: 1.4em 0 .4em; }
p { margin: 0 0 1em; }
ul, ol { padding-left: 1.3em; margin: 0 0 1em; }
li { margin-bottom: .3em; }
hr { border: 0; border-top: 1px solid var(--rule); margin: 2.5em 0; }
blockquote { margin: 1.4em 0; padding: 0 0 0 20px; border-left: 2px solid var(--brass); font-style: italic; color: var(--muted); }
figure { margin: 1.6em 0; }
figcaption { font: .8rem/1.5 var(--font-ui); color: var(--muted); margin-top: 8px; }

code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .85rem; }
code { background: var(--surface); border: 1px solid var(--rule); border-radius: 4px; padding: 1px 5px; }
pre, .bash-command { background: var(--surface); border: 1px solid var(--rule); border-radius: 6px; padding: 14px 16px; overflow-x: auto; line-height: 1.55; margin: 0 0 1.2em; white-space: pre; display: block; }
pre code { background: none; border: 0; padding: 0; }

/* tables (about page uses them as date / detail rows) */
.prose table { width: 100%; border-collapse: collapse; margin: 0 0 1em; font-size: 1rem; line-height: 1.6; }
.prose td, .prose th { padding: 14px 0; border-bottom: 1px solid var(--rule); vertical-align: top; text-align: left; }
.prose td:first-child { color: var(--muted); font-family: var(--font-ui); font-size: .82rem; line-height: 1.9; padding-right: 20px; }
.prose tr:last-child td { border-bottom: 0; }
.prose td[colspan] { padding: 0; border: 0; height: 0 !important; line-height: 0; }
.prose td u { text-decoration: none; color: var(--muted); }
.prose th { font-family: var(--font-ui); font-size: .8rem; color: var(--muted); font-weight: 500; }
.prose div[style*="overflow"], .table-wrap { overflow-x: auto; }

/* ---------- on-page contents ---------- */
.toc { position: sticky; top: 24px; align-self: start; font: .82rem/1.4 var(--font-ui); display: grid; gap: 2px; border-left: 1px solid var(--rule); padding-left: 16px; }
.toc b { font-weight: 500; font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.toc a { color: var(--muted); text-decoration: none; padding: 4px 0; }
.toc a:hover { color: var(--accent); }
.toc-mobile { display: none; font: .88rem/1.4 var(--font-ui); margin: 0 0 28px; border: 1px solid var(--rule); border-radius: 6px; padding: 10px 14px; }
.toc-mobile summary { cursor: pointer; color: var(--muted); }
.toc-mobile a { display: block; padding: 6px 0; text-decoration: none; }

/* ---------- lists of projects / posts ---------- */
.prose ul:has(> .project-item) { list-style: none; padding: 0; margin: 28px 0 0; border-top: 1px solid var(--rule); }
.project-item { display: grid; grid-template-columns: 148px minmax(0, 1fr); column-gap: 22px; align-items: start; padding: 22px 0; margin: 0; border-bottom: 1px solid var(--rule); clear: both; }
.project-item h3 { grid-column: 2; grid-row: 1; margin: 0 0 .3em; font-size: 1.1rem; }
.project-item h3 a { color: var(--fg); text-decoration: none; }
.project-item h3 a:hover { color: var(--accent); }
.project-item .thumbnail { grid-column: 1; grid-row: 1 / span 3; width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 4px; border: 1px solid var(--rule); background: var(--surface); }
.project-item > :not(h3):not(img) { grid-column: 2; }
.project-item p { margin: 0 0 .5em; font-size: .95rem; line-height: 1.55; color: var(--muted); }
.project-item:not(:has(img)) { grid-template-columns: minmax(0, 1fr); }
.project-item:not(:has(img)) h3, .project-item:not(:has(img)) > :not(h3) { grid-column: 1; }

/* personal blog list */
.prose ul:not(:has(> .project-item)) li > span { font: .8rem var(--font-ui); color: var(--muted); margin-left: 10px; }

/* ---------- footer ---------- */
.footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; padding: 22px max(24px, env(safe-area-inset-right, 0px)) 22px max(24px, env(safe-area-inset-left, 0px)); border-top: 1px solid var(--rule); font: .82rem/1.5 var(--font-ui); color: var(--muted); }
.footer .social { display: flex; flex-wrap: wrap; gap: 4px 18px; }
.footer a { color: var(--muted); text-decoration: none; }
.footer a:hover { color: var(--accent); }

/* ---------- home ---------- */
.home .header { position: absolute; inset: 0 0 auto 0; z-index: 2; border-bottom: 0; background: linear-gradient(to bottom, rgba(10,12,14,.6), transparent); }
.home .brand { display: none; }
.home .nav a { color: rgba(255,255,255,.8); }
.home .nav a:hover { color: #fff; }
.home .nav a[aria-current="page"] { color: #fff; }
.home .nav { margin-left: auto; }
.home .theme-toggle { color: rgba(255,255,255,.85); border-color: rgba(255,255,255,.4); }
.hero { position: relative; min-height: 78vh; display: flex; align-items: flex-end; background: #1b1f23 center / cover no-repeat; color: #fff; }
.hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(10,12,14,.85) 0%, rgba(10,12,14,.4) 55%, rgba(10,12,14,.2) 100%); }
.hero-in { position: relative; padding: 48px max(24px, env(safe-area-inset-left, 0px)) 56px; width: 100%; max-width: 1000px; margin: 0 auto; }
.hero .eyebrow { color: rgba(255,255,255,.8); }
.hero h1 { font-size: clamp(2.4rem, 7vw, 4rem); color: #fff; margin: 0 0 .15em; }
.hero .tagline { font-size: 1.3rem; font-style: italic; color: rgba(255,255,255,.88); margin: 0; }
.hero-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; font-family: var(--font-ui); }
.hero-links a { color: #fff; text-decoration: none; font-size: .85rem; padding: 8px 18px; border: 1px solid rgba(255,255,255,.5); border-radius: 999px; backdrop-filter: blur(4px); }
.hero-links a:first-child { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.hero-links a:hover { border-color: #fff; }
.home .page { padding-top: 56px; }
.glance { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 32px; max-width: 1000px; margin: 0 auto; }
.glance h2 { font: 500 .72rem/1 var(--font-ui); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); border: 0; padding: 0; margin: 0 0 12px; }
.glance p { margin: 0; font-size: 1rem; line-height: 1.6; }
.hero .summary { font-size: 1.2rem; line-height: 1.55; color: rgba(255,255,255,.9); max-width: 36em; margin: 0; }

/* ---------- small screens ---------- */
@media (max-width: 860px) {
  .with-toc { grid-template-columns: minmax(0, 1fr); }
  .toc { display: none; }
  .toc-mobile { display: block; }
}
@media (max-width: 600px) {
  body { font-size: 1.0625rem; }
  h1 { font-size: 1.9rem; }
  .header { padding-block: 14px; gap: 6px 16px; }
  .brand { order: 1; }
  .theme-toggle { order: 2; }
  .nav { order: 3; width: 100%; gap: 2px 16px; }
  .home .nav { margin-left: 0; }
  .home .theme-toggle { margin-left: auto; }
  .page { padding-top: 36px; padding-bottom: 56px; }
  .project-item { grid-template-columns: 96px minmax(0, 1fr); column-gap: 16px; }
  .prose table, .prose tbody, .prose tr, .prose td { display: block; width: 100% !important; }
  .prose td:first-child { padding: 14px 0 0; border: 0; line-height: 1.4; }
  .prose td:last-child { padding-top: 2px; }
  .hero { min-height: 70vh; }
  .hero .summary { font-size: 1.05rem; }
}
@media (prefers-reduced-motion: no-preference) {
  .nav a, .toc a, .project-item h3 a, .hero-links a, .theme-toggle { transition: color .15s, border-color .15s; }
}