:root {
  --bg:     #fcfbf9;
  --fg:     #1d1d1f;
  --muted:  #6b6a67;
  --faint:  #9a9893;
  --line:   #ececea;
  --accent: #c75a35;
  --code:   #f3f1ec;
  color-scheme: light;
}
/* dark palette — system preference (unless user forced light) or explicit toggle */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #161514; --fg: #f2f1ee; --muted: #a3a19b; --faint: #76746e;
    --line: #292723; --accent: #f0855c; --code: #211f1c;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #161514; --fg: #f2f1ee; --muted: #a3a19b; --faint: #76746e;
  --line: #292723; --accent: #f0855c; --code: #211f1c;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 400 17px/1.65 -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Segoe UI", Roboto, "Noto Sans Devanagari", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background .4s ease, color .4s ease;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: clamp(3.5rem, 9vh, 7rem) 1.5rem 5rem;
  animation: rise .55s cubic-bezier(.21,.6,.35,1) both;
}
@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: none; }
}

/* --- top controls --- */
.topbar { display: flex; justify-content: flex-end; gap: .4rem; margin-bottom: 2.5rem; }
.ctrl {
  -webkit-appearance: none; appearance: none;
  font-family: inherit; font-size: .78rem; font-weight: 600; letter-spacing: .01em;
  color: var(--muted); background: transparent; border: 1px solid var(--line);
  padding: .34rem .72rem; border-radius: 980px; cursor: pointer;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}
.ctrl:hover { color: var(--fg); border-color: var(--faint); }
#themeBtn { padding: .34rem .55rem; font-size: .85rem; }

/* --- headings / hero --- */
h1 {
  font-size: clamp(2.4rem, 6vw, 3.3rem);
  font-weight: 700; letter-spacing: -.03em; line-height: 1.05; margin: 0;
}
h1.name::after { content: "."; color: var(--accent); }
.role {
  margin: .85rem 0 0; font-size: .82rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: .1em; color: var(--faint);
}
.intro {
  margin: 1.6rem 0 0; max-width: 36rem;
  font-size: 1.2rem; line-height: 1.55; letter-spacing: -.003em; color: var(--fg);
}
.intro a { font-weight: 500; }

/* --- links --- */
a { color: var(--accent); text-decoration: none; font-weight: 500; transition: color .15s ease; }
a:hover { text-decoration: underline; text-underline-offset: .18em; text-decoration-thickness: 1px; }
.muted { color: var(--muted); }
.desc { color: var(--muted); font-weight: 400; }

/* --- homepage sections --- */
.sections {
  margin-top: 3.75rem; display: grid; grid-template-columns: 1fr; gap: 2.75rem 3rem;
}
@media (min-width: 680px) { .sections { grid-template-columns: 1fr 1fr; } }
.sections section { margin: 0; }
.sections h2 {
  font-size: .72rem; text-transform: uppercase; letter-spacing: .14em;
  font-weight: 600; color: var(--muted); margin: 0 0 1.1rem;
}
.sections ul { list-style: none; margin: 0; padding: 0; }
.sections li { font-size: 1.02rem; line-height: 1.5; padding: .5rem 0; }
.sections li a { color: var(--fg); font-weight: 600; }
.sections li a:hover { color: var(--accent); text-decoration: none; }

/* --- blog index --- */
.backlink { margin: 0 0 2.5rem; font-size: .9rem; }
.backlink a { color: var(--faint); font-weight: 600; }
.backlink a:hover { color: var(--accent); text-decoration: none; }
.postlist { list-style: none; margin: 2.5rem 0 0; padding: 0; }
.postlist li { padding: 1.2rem 0; border-top: 1px solid var(--line); }
.postlist li:first-child { border-top: none; }
.postlist li > a { font-size: 1.25rem; font-weight: 700; color: var(--fg); letter-spacing: -.01em; }
.postlist li > a:hover { color: var(--accent); text-decoration: none; }
.postlist .desc { display: block; margin-top: .3rem; font-size: .98rem; }

/* --- single post --- */
.post { max-width: 40rem; }
.post h1 { font-size: clamp(1.9rem, 5vw, 2.5rem); letter-spacing: -.02em; margin: 0; }
.postmeta {
  margin: .6rem 0 2.5rem; font-size: .8rem; text-transform: uppercase;
  letter-spacing: .09em; color: var(--faint); font-weight: 600;
}
.post h2 { font-size: 1.5rem; font-weight: 700; letter-spacing: -.01em; margin: 2.6rem 0 .8rem; }
.post h3 { font-size: 1.2rem; font-weight: 700; margin: 2rem 0 .6rem; }
.post p { margin: 1.15rem 0; }
.post ul, .post ol { margin: 1.15rem 0; padding-left: 1.4rem; }
.post li { margin: .4rem 0; }
.post a { text-decoration: underline; text-underline-offset: .18em; text-decoration-thickness: 1px; }
.post img { max-width: 100%; height: auto; border-radius: 8px; }
.post blockquote {
  margin: 1.6rem 0; padding: .1rem 0 .1rem 1.2rem;
  border-left: 3px solid var(--accent); color: var(--muted); font-style: italic;
}
.post code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: .88em; background: var(--code); padding: .14em .4em; border-radius: 5px;
}
.post pre {
  background: var(--code); padding: 1rem 1.1rem; border-radius: 10px;
  overflow-x: auto; line-height: 1.55; font-size: .92rem; margin: 1.4rem 0;
}
.post pre code { background: none; padding: 0; font-size: inherit; }
.post hr { border: none; border-top: 1px solid var(--line); margin: 2.6rem 0; }

/* --- footer --- */
footer {
  margin-top: 4.5rem; padding-top: 1.5rem; border-top: 1px solid var(--line);
  font-size: .85rem; color: var(--faint);
}
footer a { color: var(--faint); font-weight: 500; }
footer a:hover { color: var(--accent); text-decoration: none; }

@media (prefers-reduced-motion: reduce) {
  main { animation: none; }
  * { transition: none !important; }
}