/* ==========================================================================
   Gruvbox Material — dark theme
   Layout adapted from the `exp4` personal-site demo (solid sticky navbar,
   800px reading column, card listings), recoloured with the Gruvbox Material
   palette used across this site.
   ========================================================================== */

:root {
  /* Gruvbox Material — dark palette. */
  --bg-dim: #1b1b1b;
  --bg0: #282828;
  --bg1: #32302f;
  --bg2: #3c3836;
  --bg3: #45403d;
  --bg4: #5a524c;
  --bg5: #665c54;

  --fg0: #ddc7a1;
  --fg1: #d4be98;
  --fg2: #c9b99a;
  --fg3: #bdae93;

  --grey0: #7c6f64;
  --grey1: #928374;
  --grey2: #a89984;

  --red: #ea6962;
  --orange: #e78a4e;
  --yellow: #d8a657;
  --green: #a9b665;
  --aqua: #89b482;
  --blue: #7daea3;
  --purple: #d3869b;

  --bg-red: #4b3334;
  --bg-green: #3b4138;
  --bg-yellow: #4b4237;
  --bg-blue: #3a403b;
  --bg-purple: #4b3a40;
  --bg-aqua: #3a4038;

  --accent: var(--blue);
  --radius: 8px;
  --radius-sm: 4px;
  --wrap: 800px;

  --font-sans: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
}

/* --------------------------------------------------------------- reset --- */

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  margin: 0;
  background: var(--bg-dim);
  color: var(--fg1);
  font-family: var(--font-sans);
  font-size: clamp(0.97rem, 0.93rem + 0.2vw, 1.05rem);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--bg-blue);
  color: var(--fg0);
}

img,
svg {
  max-width: 100%;
  height: auto;
}

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

:where(a, button, summary, input):focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
  border-radius: 3px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--bg3);
  border-radius: 0 0 var(--radius-sm) 0;
  color: var(--fg0);
}

.skip-link:focus {
  left: 0;
}

/* -------------------------------------------------------------- header --- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg0);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 1rem;
}

.brand {
  color: var(--orange);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1;
  text-decoration: none;
}

.brand:hover {
  color: var(--yellow);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.75rem;
}

.site-nav a {
  color: var(--grey2);
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s ease;
}

.site-nav a:hover {
  color: var(--fg0);
}

.site-nav a[aria-current="page"] {
  color: var(--orange);
}

/* ---------------------------------------------------------------- main --- */

#main.wrap {
  flex: 1;
  padding-block: clamp(2rem, 5vw, 3rem);
}

/* ---------------------------------------------------------------- hero --- */

.hero {
  display: flex;
  align-items: center;
  gap: clamp(1.25rem, 4vw, 2.5rem);
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.avatar {
  flex: 0 0 auto;
  width: 132px;
  height: 132px;
  background: var(--bg1);
  border: 4px solid var(--bg3);
  border-radius: 50%;
  object-fit: cover;
}

.hero-text {
  min-width: 0;
}

.hero-name {
  margin: 0 0 1rem;
  color: var(--yellow);
  font-size: clamp(1.8rem, 1.3rem + 2vw, 2.6rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

/* -------------------------------------------------------- page header --- */

.page-header {
  margin-bottom: 1.5rem;
}

.page-title {
  margin: 0;
  color: var(--fg0);
  font-size: clamp(1.7rem, 1.3rem + 1.6vw, 2.3rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0.75rem 0 0;
  color: var(--grey2);
  font-size: 0.9rem;
}

.page-meta .sep {
  margin: 0;
}

/* --------------------------------------------------------------- prose --- */

.prose > :first-child {
  margin-top: 0;
}

.prose > :last-child {
  margin-bottom: 0;
}

.prose h2,
.prose h3,
.prose h4,
.prose h5,
.prose h6 {
  margin: 2rem 0 1rem;
  color: var(--fg0);
  font-weight: 700;
  line-height: 1.25;
  scroll-margin-top: 5rem;
}

.prose h2 {
  font-size: 1.5rem;
}

.prose h3 {
  font-size: 1.22rem;
}

.prose h4 {
  color: var(--fg2);
  font-size: 1.05rem;
}

.prose h5,
.prose h6 {
  color: var(--grey2);
  font-size: 0.95rem;
}

.prose p {
  margin: 0 0 1.5rem;
}

.prose a {
  color: var(--blue);
  text-decoration: none;
}

.prose a:hover {
  color: var(--aqua);
  text-decoration: underline;
}

.prose strong {
  color: var(--fg0);
  font-weight: 700;
}

.prose em {
  color: var(--fg0);
}

.prose mark {
  padding: 0.05em 0.25em;
  background: var(--bg-yellow);
  border-radius: 3px;
  color: var(--fg0);
}

.prose del {
  color: var(--grey1);
}

.prose hr {
  height: 0;
  margin: 2.5rem 0;
  border: 0;
  border-top: 1px solid var(--bg2);
}

.prose abbr {
  text-decoration: underline dotted;
  cursor: help;
}

.prose kbd {
  padding: 0.1em 0.45em;
  background: var(--bg1);
  border: 1px solid var(--bg3);
  border-bottom-width: 2px;
  border-radius: 4px;
  color: var(--fg0);
  font-family: var(--font-mono);
  font-size: 0.82em;
}

.prose ul,
.prose ol {
  margin: 0 0 1.5rem;
  padding-left: 1.5rem;
}

.prose li {
  margin: 0.4em 0;
}

.prose li::marker {
  color: var(--orange);
}

.prose li > input[type="checkbox"] {
  margin-right: 0.5em;
  accent-color: var(--green);
  vertical-align: middle;
}

.prose li:has(> input[type="checkbox"]) {
  margin-left: -1.1em;
  list-style: none;
}

.prose blockquote {
  margin: 1.5rem 0;
  padding: 0.5rem 1rem;
  background: var(--bg0);
  border-left: 4px solid var(--aqua);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--fg2);
  font-style: italic;
}

.prose blockquote p:last-child {
  margin-bottom: 0;
}

.prose blockquote blockquote {
  margin: 0.8em 0;
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.88em;
}

.prose :not(pre) > code {
  padding: 0.2rem 0.4rem;
  background: var(--bg1);
  border-radius: 4px;
  color: var(--orange);
  overflow-wrap: anywhere;
}

.prose pre {
  margin: 1.5rem 0;
  padding: 1rem;
  background: var(--bg0);
  border-radius: var(--radius);
  line-height: 1.6;
  overflow-x: auto;
}

.prose pre code {
  padding: 0;
  background: none;
  border: 0;
  color: var(--fg1);
  font-size: 0.86rem;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.93rem;
}

.prose thead th {
  background: var(--bg1);
  color: var(--fg0);
}

.prose th,
.prose td {
  padding: 0.5em 0.75em;
  border: 1px solid var(--bg2);
  text-align: left;
  vertical-align: top;
  overflow-wrap: break-word;
}

.prose tbody tr:nth-child(even) {
  background: color-mix(in srgb, var(--bg0) 60%, transparent);
}

.prose img {
  border-radius: var(--radius);
}

.prose figure {
  margin: 1.5rem 0;
}

.prose figcaption {
  margin-top: 0.5rem;
  color: var(--grey2);
  font-size: 0.85rem;
  text-align: center;
}

.prose details {
  margin: 1.5rem 0;
  padding: 0.8rem 1rem;
  background: var(--bg0);
  border: 1px solid var(--bg1);
  border-radius: var(--radius);
}

.prose summary {
  color: var(--fg0);
  font-weight: 600;
  cursor: pointer;
}

/* --------------------------------------------------------- post lists --- */

.section-title {
  margin: 2.5rem 0 1rem;
  color: var(--fg0);
  font-size: 1.3rem;
}

.post-list {
  margin-top: 2.5rem;
}

.posts {
  display: grid;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.post-item {
  padding: 1.5rem;
  background: var(--bg0);
  border: 1px solid var(--bg1);
  border-radius: var(--radius);
  transition:
    transform 0.2s ease,
    border-color 0.2s ease;
}

.post-item:hover {
  transform: translateY(-5px);
  border-color: var(--bg4);
}

.post-link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  text-decoration: none;
}

.post-title {
  color: var(--fg0);
  font-size: 1.08rem;
  font-weight: 700;
}

.post-link:hover .post-title {
  color: var(--blue);
}

.post-date {
  color: var(--grey1);
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.post-tags,
.page-meta {
  --chip-gap: 0.4rem;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--chip-gap);
  margin: 0.75rem 0 0;
}

.tag {
  padding: 0.12rem 0.5rem;
  background: var(--bg-aqua);
  border: 1px solid color-mix(in srgb, var(--aqua) 30%, transparent);
  border-radius: 999px;
  color: var(--aqua);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-decoration: none;
}

.tag:hover {
  color: var(--fg0);
}

.more {
  margin-top: 1.5rem;
}

.more a {
  color: var(--blue);
  font-weight: 600;
  text-decoration: none;
}

.more a:hover {
  color: var(--aqua);
  text-decoration: underline;
}

/* -------------------------------------------------------------- footer --- */

.site-footer {
  margin-top: clamp(2.5rem, 6vw, 4rem);
  padding-block: 2rem;
  background: var(--bg-dim);
  border-top: 1px solid var(--bg1);
  color: var(--grey1);
  font-size: 0.9rem;
  text-align: center;
}

.footer-inner {
  text-align: center;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--grey2);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--blue);
  text-decoration: underline;
}

.sep {
  margin-inline: 0.5rem;
  color: var(--grey0);
}

/* --------------------------------------------------------------- small --- */

@media (max-width: 600px) {
  .hero {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .post-link {
    flex-direction: column;
    gap: 0.15rem;
  }

  .header-inner {
    gap: 1rem;
  }

  .site-nav {
    gap: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  * {
    animation: none !important;
    transition: none !important;
  }
}