/* ==========================================================================
   Harshith Kethavath — personal site
   Minimal academic design. Light: white/black. Dark: black/white. Accent: blue.
   ========================================================================== */

/* ---------- Design tokens ---------- */
/* Registered as <color> so the theme swap can animate the variables themselves —
   every element resolving var() then updates in perfect sync (no per-element chase). */
@property --bg             { syntax: "<color>"; inherits: true; initial-value: #ffffff; }
@property --bg-subtle      { syntax: "<color>"; inherits: true; initial-value: #f7f7f8; }
@property --text           { syntax: "<color>"; inherits: true; initial-value: #111111; }
@property --text-secondary { syntax: "<color>"; inherits: true; initial-value: #4b4b52; }
@property --text-muted     { syntax: "<color>"; inherits: true; initial-value: #83838c; }
@property --border         { syntax: "<color>"; inherits: true; initial-value: #e8e8ec; }
@property --accent         { syntax: "<color>"; inherits: true; initial-value: #2563eb; }
@property --accent-hover   { syntax: "<color>"; inherits: true; initial-value: #1d4ed8; }
@property --accent-soft    { syntax: "<color>"; inherits: true; initial-value: rgba(37, 99, 235, 0.08); }
@property --nav-bg         { syntax: "<color>"; inherits: true; initial-value: rgba(255, 255, 255, 0.85); }

:root {
  --bg: #ffffff;
  --bg-subtle: #f7f7f8;
  --text: #111111;
  --text-secondary: #4b4b52;
  --text-muted: #83838c;
  --border: #e8e8ec;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-soft: rgba(37, 99, 235, 0.08);
  --nav-bg: rgba(255, 255, 255, 0.85);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(0, 0, 0, 0.05);
  --shadow-hover: 0 2px 4px rgba(0, 0, 0, 0.05), 0 12px 32px rgba(0, 0, 0, 0.09);

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

[data-theme="dark"] {
  --bg: #000000;
  --bg-subtle: #101012;
  --text: #f5f5f7;
  --text-secondary: #b4b4bc;
  --text-muted: #7c7c86;
  --border: #222226;
  --accent: #4d8dff;
  --accent-hover: #77aaff;
  --accent-soft: rgba(77, 141, 255, 0.12);
  --nav-bg: rgba(0, 0, 0, 0.8);
  --shadow: none;
  --shadow-hover: none;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Smooth theme switching — the class is added by JS for the duration of the swap.
   Animating the registered variables keeps every heading, paragraph, icon, border
   and background on one identical clock. */
html.theme-transition {
  transition: --bg 0.4s ease, --bg-subtle 0.4s ease, --text 0.4s ease,
              --text-secondary 0.4s ease, --text-muted 0.4s ease,
              --border 0.4s ease, --accent 0.4s ease, --accent-hover 0.4s ease,
              --accent-soft 0.4s ease, --nav-bg 0.4s ease;
}

/* While the variables animate, per-element hover transitions would chase them
   and lag behind — suspend them so icons, links and buttons stay in lockstep. */
html.theme-transition *,
html.theme-transition *::before,
html.theme-transition *::after {
  transition: none !important;
}

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

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

::selection { background: var(--accent); color: #fff; }

/* Middle 60% of the screen */
.container {
  width: 60%;
  max-width: 1080px;
  margin-inline: auto;
}

@media (max-width: 1280px) { .container { width: 74%; } }
@media (max-width: 900px)  { .container { width: 88%; } }

main { padding-top: 108px; padding-bottom: 96px; }

/* ---------- Nav ---------- */
.site-nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: var(--nav-bg);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 64px;
}

.site-nav__name {
  font-weight: 650;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
  color: var(--text);
  white-space: nowrap;
}
.site-nav__name:hover { color: var(--accent); }

.site-nav__right { display: flex; align-items: center; gap: 22px; }

.site-nav__links {
  display: flex;
  align-items: center;
  gap: 26px;
  list-style: none;
}

.site-nav__links a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.005em;
  padding: 4px 0;
  transition: color 0.15s ease;
}

.site-nav__links a:hover { color: var(--text); }

.site-nav__links a.is-active { color: var(--accent); }

/* Resume sits in the nav list but reads as an action, not a page */
.site-nav__links a.site-nav__resume,
.site-nav__mobile a.site-nav__resume {
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 999px;
  padding: 4px 14px;
  transition: background 0.15s ease, color 0.15s ease;
}

.site-nav__links a.site-nav__resume:hover,
.site-nav__mobile a.site-nav__resume:hover {
  background: var(--accent);
  color: #fff;
}
[data-theme="dark"] .site-nav__links a.site-nav__resume:hover,
[data-theme="dark"] .site-nav__mobile a.site-nav__resume:hover { color: #000; }

.site-nav__mobile a.site-nav__resume {
  display: inline-block;
  margin-top: 8px;
  padding: 6px 16px;
}

/* Theme toggle */
.theme-toggle {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.theme-toggle:hover { color: var(--accent); border-color: var(--accent); }

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

/* Hamburger (mobile only) */
.site-nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 34px;
  height: 34px;
  padding: 0 7px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
}

.site-nav__hamburger span {
  display: block;
  height: 2px;
  width: 100%;
  border-radius: 2px;
  background: var(--text-secondary);
  transition: transform 0.25s ease, opacity 0.2s ease;
}

.site-nav__hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.site-nav__hamburger.is-open span:nth-child(2) { opacity: 0; }
.site-nav__hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile dropdown menu */
.site-nav__mobile {
  display: none;
  border-top: 1px solid var(--border);
}

.site-nav__mobile.is-open { display: block; }

.site-nav__mobile ul { list-style: none; padding: 6px 0 14px; }

.site-nav__mobile a {
  display: block;
  padding: 12px 0;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
}
.site-nav__mobile a:hover { color: var(--text); }
.site-nav__mobile a.is-active { color: var(--accent); }

@media (max-width: 720px) {
  /* Toggle sits left of the hamburger; links collapse into the dropdown */
  .site-nav__links { display: none; }
  .site-nav__hamburger { display: flex; }
  .site-nav__right { gap: 12px; }
}

/* ---------- Shared type ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}

.section-title {
  font-size: 1.45rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
}

.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 64px 0;
}

.page-header { margin-bottom: 56px; }

.page-header__title {
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 16px;
}

.page-header__desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 640px;
}
.page-header__desc strong { color: var(--text); }

.page-header__feed { margin-top: 18px; }

.page-header__feed a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.15s ease;
}
.page-header__feed a:hover { color: var(--accent); }

/* ---------- Home: hero ---------- */
.hero {
  display: grid;
  grid-template-columns: 1fr 336px;
  gap: 64px;
  align-items: start;
}

.hero__name {
  font-size: clamp(2.1rem, 4vw, 2.9rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.1;
  margin-bottom: 18px;
}

.hero__text p:not(.eyebrow) {
  color: var(--text-secondary);
  margin-bottom: 16px;
  max-width: 60ch;
}

.hero__contact { margin-top: 24px; }

.hero__email {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--accent);
}

.hero__photo-inner { width: 100%; }

.hero__photo img {
  width: 100%;
  border-radius: 14px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

/* Social icons, centered under the photo */
.hero__socials {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 22px;
  margin-top: 18px;
}

.hero__socials a {
  display: grid;
  place-items: center;
  color: var(--text);
  transition: color 0.15s ease, transform 0.15s ease;
}

.hero__socials a:hover {
  color: var(--accent);
  transform: translateY(-2px);
}

.hero__socials svg {
  width: 21px;
  height: 21px;
  fill: currentColor;
  display: block;
}

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 36px; }
  .hero__photo { order: -1; }
  .hero__photo-inner { width: min(300px, 75%); margin-inline: auto; }
}

/* ---------- Home: news ---------- */
.news { list-style: none; }

.news li {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 20px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.news li:last-child { border-bottom: none; }

.news__date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  padding-top: 3px;
  white-space: nowrap;
}

.news li p { color: var(--text-secondary); font-size: 0.95rem; }

/* Collapsible overflow — items beyond the first 5 are wrapped by JS */
.news > li { transition: border-color 0.3s ease; }

.news li.news__more {
  grid-template-columns: 1fr;
  grid-template-rows: 0fr;
  gap: 0;
  padding: 0;
  border-bottom: none;
  transition: grid-template-rows 0.45s ease;
}

.news.is-expanded li.news__more { grid-template-rows: 1fr; }

.news__more-clip {
  overflow: hidden;
  min-height: 0;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.news.is-expanded .news__more-clip {
  opacity: 1;
  transition: opacity 0.4s ease 0.05s;
}

.news__more ul { list-style: none; }

/* No trailing hairline under the 5th item while collapsed */
.news:not(.is-expanded) > li:has(+ .news__more) { border-bottom-color: transparent; }

.news__toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  padding: 0;
  border: none;
  background: none;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  cursor: pointer;
  transition: color 0.15s ease;
}

.news__toggle:hover { color: var(--accent-hover); }

.news__toggle svg { transition: transform 0.35s ease; }
.news__toggle.is-open svg { transform: rotate(180deg); }

@media (max-width: 600px) {
  .news li { grid-template-columns: 1fr; gap: 2px; }
  .news li.news__more { grid-template-columns: 1fr; gap: 0; }
}

/* Gap between the hero and the News section (matches the header gap on other pages). */
#news { margin-top: 56px; }

/* ---------- Publications list ---------- */
.pub-list { display: flex; flex-direction: column; gap: 56px; }

.pub {
  display: grid;
  grid-template-columns: 176px 1fr;
  gap: 36px;
  align-items: start;
}

.pub__media { display: flex; flex-direction: column; gap: 10px; }

.pub__tag {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #fff;
  background: var(--accent);
  border-radius: 6px;
  padding: 4px 10px;
}

.pub__thumb {
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: var(--bg-subtle);
}

.pub__thumb img, .pub__thumb video { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }

.pub__title {
  font-size: 1.18rem;
  font-weight: 650;
  letter-spacing: -0.015em;
  line-height: 1.35;
  margin-bottom: 8px;
  color: var(--text);
}

.pub__authors { font-size: 0.92rem; color: var(--text-secondary); margin-bottom: 2px; }
.pub__authors .me { color: var(--text); font-weight: 600; }

.pub__venue {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.pub__links { display: flex; flex-wrap: wrap; gap: 8px; }

.pub__links a {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 500;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 6px;
  padding: 4px 12px;
  transition: all 0.15s ease;
}

.pub__links a:hover { background: var(--accent); color: #fff; }

@media (max-width: 820px) {
  .pub { grid-template-columns: 1fr; gap: 18px; }
  .pub__media { max-width: 208px; }
}

/* ---------- Blog index ---------- */
.post-list { display: flex; flex-direction: column; gap: 44px; }

.post-item { display: block; }

.post-item__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.post-item__date { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-muted); }

.post-item__category {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 5px;
  padding: 2px 8px;
}

.post-item__title {
  font-size: 1.25rem;
  font-weight: 650;
  letter-spacing: -0.015em;
  line-height: 1.35;
}
.post-item__title a { color: var(--text); transition: color 0.15s ease; }
.post-item__title a:hover { color: var(--accent); }

.post-item__excerpt {
  font-size: 0.93rem;
  color: var(--text-secondary);
  margin-top: 8px;
  max-width: 68ch;
}

.post-item__read {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  margin-top: 14px;
}

.post-item__read svg { transition: transform 0.2s ease; }
.post-item__read:hover svg { transform: translateX(3px); }

/* ---------- 404 ---------- */
.notfound { padding: 40px 0 80px; }

.notfound__title {
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 16px;
}

.notfound__desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 28px;
}

.notfound__links { display: flex; flex-wrap: wrap; gap: 8px; }

.notfound__links a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 6px;
  padding: 5px 14px;
  transition: background 0.15s ease, color 0.15s ease;
}
.notfound__links a:hover { background: var(--accent); color: #fff; }
[data-theme="dark"] .notfound__links a:hover { color: #000; }

/* ---------- Books ---------- */
/* Toolbar: reading stats on the left, category filters on the right */
.shelf-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding-bottom: 20px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.shelf-stats {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}
.shelf-stats strong { color: var(--text); font-weight: 600; }

.shelf-filters { display: flex; flex-wrap: wrap; gap: 8px; }

.shelf-filters button {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 12px;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.shelf-filters button:hover { color: var(--text); border-color: var(--text-muted); }

.shelf-filters button.is-active {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
}
[data-theme="dark"] .shelf-filters button.is-active { color: #000; }

/* Filter bar reused on Publications and Blog (buttons generated by JS) */
.shelf-bar + .pub-list,
.shelf-bar + .post-list { margin-top: 32px; }

.pub.is-hidden,
.post-item.is-hidden { display: none; }

/* Currently reading — same anatomy as a shelf row, just flagged */
.shelf-now { margin: 36px 0 8px; }

.shelf-heading {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 18px;
}
.shelf-heading--now { color: var(--accent); }

/* Year groups */
.shelf-year { margin-top: 44px; }
.shelf-year.is-hidden,
.shelf-now.is-hidden { display: none; }

.shelf { display: flex; flex-direction: column; gap: 26px; }

.book {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 22px;
  align-items: start;
}
.book.is-hidden { display: none; }

.book__cover {
  position: relative;
  aspect-ratio: 2 / 3;
  border-radius: 8px;
  overflow: hidden;
  background: var(--bg-subtle);
  transition: transform 0.2s ease;
}
.book:hover .book__cover { transform: translateY(-3px); }

.book__cover img { width: 100%; height: 100%; object-fit: cover; }

/* Fallback when no cover file exists yet */
.book__cover span {
  display: none;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
}
.book__cover--fallback {
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--accent-soft), var(--bg-subtle) 70%);
}
.book__cover--fallback img { display: none; }
.book__cover--fallback span { display: block; }

.book__title {
  font-size: 1.02rem;
  font-weight: 650;
  letter-spacing: -0.012em;
  line-height: 1.35;
  color: var(--text);
}
.book__title a { color: var(--text); transition: color 0.15s ease; }
.book__title a:hover { color: var(--accent); }

.book__author { font-size: 0.9rem; color: var(--text-secondary); margin-top: 2px; }

.book__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 8px;
}

/* Rating as dots — quieter than stars, matches the mono/minimal language */
.book__rating { display: inline-flex; gap: 4px; }

.book__rating i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--border);
}
.book__rating i.is-on { background: var(--accent); }

.book__date {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

.book__tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 5px;
  padding: 2px 8px;
}

.book__take {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-top: 10px;
  max-width: 62ch;
}

.shelf-empty {
  font-size: 0.92rem;
  color: var(--text-muted);
  padding: 32px 0;
}
.shelf-empty.is-hidden { display: none; }

@media (max-width: 600px) {
  .book { grid-template-columns: 64px 1fr; gap: 16px; }
  .shelf-bar { flex-direction: column; align-items: flex-start; }
}

/* ---------- Blog post ---------- */
.post { max-width: 720px; margin-inline: auto; }

.post-header { margin-bottom: 44px; }

.post-header__back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 28px;
}
.post-header__back:hover { color: var(--accent); }

.post-header__title {
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  font-weight: 700;
  letter-spacing: -0.028em;
  line-height: 1.2;
  margin: 14px 0 18px;
}

.post-header__excerpt { font-size: 1.05rem; color: var(--text-secondary); margin-bottom: 20px; }

.post-header__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
}

.post-header__meta-dot {
  width: 3px; height: 3px;
  border-radius: 50%;
  background: var(--text-muted);
}

.post-body { font-size: 1.02rem; color: var(--text-secondary); }

.post-body p { margin-bottom: 22px; }

.post-body h2 {
  font-size: 1.35rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 44px 0 16px;
}

.post-body strong { color: var(--text); }

.post-body ul {
  margin: 0 0 22px;
  padding-left: 22px;
}
.post-body li { margin-bottom: 10px; }

.post-body blockquote {
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 10px 10px 0;
  padding: 18px 22px;
  margin: 28px 0;
}
.post-body blockquote p { margin: 0; color: var(--text); font-weight: 500; }

.post-body figure { margin: 32px auto; }

.post-body figure img {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
}

.post-body figcaption {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 10px;
}

.post-footer {
  max-width: 720px;
  margin: 56px auto 0;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}

.post-footer a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}
.post-footer a:hover { color: var(--accent); }