/* =========================================================================
   /home/adeel — modern theme
   Plain CSS, design tokens via custom properties. No build step.
   ========================================================================= */

:root {
  /* Color system */
  --color-bg: #ffffff;
  --color-surface: #f7f8fa;
  --color-surface-2: #eef1f5;
  --color-border: #e3e7ec;
  --color-text: #1f2430;
  --color-text-soft: #525a6b;
  --color-text-muted: #828a99;
  --color-accent: #2f6df6;
  --color-accent-hover: #1d56d6;
  --color-accent-soft: #e8f0ff;
  --color-code-bg: #f4f6f9;

  /* Typography */
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-serif: "Lora", Georgia, "Times New Roman", serif;
  --font-mono: "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, monospace;

  --fs-base: 1.0625rem;
  --lh-base: 1.7;

  /* Spacing scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;

  /* Layout */
  --measure: 44rem;
  --container: 72rem;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 2px rgba(20, 27, 45, 0.06), 0 1px 3px rgba(20, 27, 45, 0.05);
  --shadow-md: 0 4px 16px rgba(20, 27, 45, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #14171f;
    --color-surface: #1b1f29;
    --color-surface-2: #232834;
    --color-border: #2c3340;
    --color-text: #e6e9ef;
    --color-text-soft: #b3bac8;
    --color-text-muted: #8a93a5;
    --color-accent: #6f9bff;
    --color-accent-hover: #8fb1ff;
    --color-accent-soft: #1d2740;
    --color-code-bg: #1d222c;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.45);
  }
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg, video { max-width: 100%; height: auto; }
a { color: var(--color-accent); text-decoration: none; }
a:hover { color: var(--color-accent-hover); text-decoration: underline; }

.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--space-5); }

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--color-accent); color: #fff; padding: var(--space-2) var(--space-4);
  border-radius: 0 0 var(--radius-sm) 0; z-index: 100;
}
.skip-link:focus { left: 0; }

/* ---------- Header / Nav ---------- */
.site-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}
.site-branding {
  padding-block: var(--space-5);
}
.site-title {
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
}
.site-title:hover { color: var(--color-accent); text-decoration: none; }

.site-nav-bar {
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}
.nav-bar-inner {
  display: flex; align-items: center;
  position: relative;
}

.site-nav { flex: 1; }
.site-nav .nav-list {
  display: flex; align-items: center;
  list-style: none; margin: 0; padding: 0;
  flex-wrap: wrap;
}
.site-nav .nav-list > li > a {
  display: inline-block;
  padding: var(--space-3) var(--space-4);
  color: var(--color-text-soft);
  font-size: 0.95rem;
  font-weight: 500;
}
.site-nav .nav-list > li + li > a {
  border-left: 1px solid var(--color-border);
}
.site-nav .nav-list > li > a:hover { color: var(--color-accent); text-decoration: none; }

.nav-search-item { margin-left: auto; display: flex; align-items: center; gap: var(--space-2); }
.nav-search-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  background: none; border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); cursor: pointer;
  color: var(--color-text-soft); font-family: inherit;
}
.nav-search-btn:hover { background: var(--color-surface-2); color: var(--color-text); }

.sidebar-toggle-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  background: none; border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); cursor: pointer;
  color: var(--color-text-soft);
}
.sidebar-toggle-btn:hover { background: var(--color-surface-2); color: var(--color-text); }
.sidebar-toggle-btn[aria-pressed="true"] { background: var(--color-surface-2); color: var(--color-accent); border-color: var(--color-accent); }

/* Sidebar hidden state */
.site-main.sidebar-hidden { grid-template-columns: 1fr; }
.site-main.sidebar-hidden .sidebar { display: none; }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px; justify-content: center;
  width: 42px; height: 42px; padding: 0; background: none;
  border: 1px solid var(--color-border); border-radius: var(--radius-sm); cursor: pointer;
  margin-left: auto;
}
.nav-toggle-bar {
  display: block; width: 20px; height: 2px; margin-inline: auto;
  background: var(--color-text); border-radius: 2px; transition: transform .2s, opacity .2s;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 720px) {
  .nav-toggle { display: flex; }
  .nav-search-item { display: none; }
  .site-nav {
    position: absolute; left: 0; right: 0; top: 100%;
    background: var(--color-bg); border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md); z-index: 40;
    max-height: 0; overflow: hidden; transition: max-height .25s ease;
  }
  .site-nav.is-open { max-height: 70vh; }
  .site-nav .nav-list { flex-direction: column; align-items: stretch; }
  .site-nav .nav-list > li + li > a { border-left: none; border-top: 1px solid var(--color-border); }
  .site-nav .nav-list > li > a { width: 100%; }
}

/* ---------- Main / Two-column ---------- */
.site-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) clamp(220px, 24vw, 280px);
  gap: var(--space-7);
  padding-block: var(--space-7);
  min-height: 60vh;
  align-items: start;
}
@media (max-width: 860px) {
  .site-main { grid-template-columns: 1fr; }
  .sidebar { display: none; }
}

/* ---------- Sidebar ---------- */
.sidebar { font-size: 0.9rem; }
.sidebar-section { margin-bottom: var(--space-5); }
.sidebar-details { }
.sidebar-details[open] > .sidebar-heading { margin-bottom: var(--space-3); }
.sidebar-heading {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 0.8rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--color-text-muted);
  margin: 0; padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border);
  cursor: pointer; list-style: none; user-select: none;
}
.sidebar-heading::-webkit-details-marker { display: none; }
.sidebar-heading::after {
  content: '\2212'; /* minus = open */
  font-size: 1rem; line-height: 1;
  color: var(--color-text-muted);
  transition: transform .15s;
}
details:not([open]) > .sidebar-heading::after {
  content: '\002B'; /* plus = closed */
}
.sidebar-list {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-direction: column; gap: var(--space-2);
}
.sidebar-list li { display: flex; justify-content: space-between; align-items: baseline; gap: var(--space-2); }
.sidebar-list a { color: var(--color-text-soft); }
.sidebar-list a:hover { color: var(--color-accent); }
.sidebar-date { color: var(--color-text-muted); font-size: 0.8rem; white-space: nowrap; }
.sidebar-count {
  color: var(--color-text-muted); font-size: 0.75rem;
  background: var(--color-surface-2); border-radius: 999px;
  padding: 1px 7px;
}
.sidebar-more {
  display: inline-block; margin-top: var(--space-3);
  font-size: 0.85rem; font-weight: 600;
}
.sidebar-tags { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-2); }

/* ---------- Home ---------- */
.home-intro { margin-bottom: var(--space-6); }
.home-title { font-family: var(--font-mono); font-size: 1.75rem; margin: 0 0 var(--space-2); }
.home-subtitle { color: var(--color-text-soft); margin: 0; font-size: 1.1rem; }

/* ---------- Post list / cards ---------- */
.post-list { display: flex; flex-direction: column; gap: var(--space-6); }
.post-card {
  padding-bottom: var(--space-6); border-bottom: 1px solid var(--color-border);
}
.post-card:last-child { border-bottom: none; }
.post-card-title { font-size: 1.5rem; line-height: 1.25; margin: 0 0 var(--space-2); letter-spacing: -0.01em; }
.post-card-title a { color: var(--color-text); }
.post-card-title a:hover { color: var(--color-accent); text-decoration: none; }
.post-card-summary { color: var(--color-text-soft); margin: var(--space-3) 0; }
.post-card-summary p { margin: 0; }
.read-more { font-weight: 600; font-size: 0.95rem; }

/* ---------- Entry meta ---------- */
.entry-meta {
  display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-3);
  list-style: none; margin: 0; padding: 0;
  color: var(--color-text-muted); font-size: 0.875rem;
}
.entry-meta > li { display: inline-flex; align-items: center; }
.entry-meta > li + li::before { content: "•"; margin-right: var(--space-3); color: var(--color-border); }
.meta-category {
  color: var(--color-accent); font-weight: 600;
  background: var(--color-accent-soft); padding: 2px var(--space-2); border-radius: 999px;
}
.meta-category:hover { text-decoration: none; }

/* ---------- Article ---------- */
.post { max-width: var(--measure); margin-inline: auto; }
.post-header { margin-bottom: var(--space-6); }
.post-title { font-size: 2.25rem; line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 var(--space-4); }

.post-content {
  font-family: var(--font-serif); font-size: 1.1875rem; line-height: 1.75; color: var(--color-text);
}
.post-content > * + * { margin-top: var(--space-5); }
.post-content h2, .post-content h3, .post-content h4 {
  font-family: var(--font-sans); line-height: 1.25; letter-spacing: -0.01em;
  margin-top: var(--space-7); margin-bottom: var(--space-3); scroll-margin-top: 80px;
}
.post-content h2 { font-size: 1.6rem; }
.post-content h3 { font-size: 1.3rem; }
.post-content h4 { font-size: 1.1rem; }
.post-content a { text-decoration: underline; text-underline-offset: 2px; }
.post-content img { border-radius: var(--radius); box-shadow: var(--shadow-sm); display: block; margin-inline: auto; }
/* Side-by-side images: a paragraph holding more than one image becomes a flex row.
   Images shrink proportionally (min-width:0) so they stay on one line even in the
   narrower article column. */
.post-content p:has(> img ~ img) {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.75rem;
  justify-content: center;
  align-items: flex-start;
}
.post-content p:has(> img ~ img) > img {
  display: block;
  margin: 0;
  min-width: 0;
  flex: 0 1 auto;
  max-width: 100%;
  height: auto;
}
.post-content ul, .post-content ol { padding-left: 1.4em; }
.post-content li + li { margin-top: var(--space-2); }
.post-content blockquote {
  margin: var(--space-5) 0; padding: var(--space-2) var(--space-5);
  border-left: 3px solid var(--color-accent); color: var(--color-text-soft); font-style: italic;
}
.post-content hr { border: none; border-top: 1px solid var(--color-border); margin: var(--space-7) 0; }

/* Code */
.post-content code, code {
  font-family: var(--font-mono); font-size: 0.875em;
  background: var(--color-code-bg); padding: 0.15em 0.4em; border-radius: var(--radius-sm);
}
.post-content pre {
  font-family: var(--font-mono); background: var(--color-code-bg);
  padding: var(--space-4); border-radius: var(--radius); overflow-x: auto;
  border: 1px solid var(--color-border); font-size: 0.9rem; line-height: 1.5;
}
.post-content pre code { background: none; padding: 0; font-size: inherit; }
.highlight { border-radius: var(--radius); overflow-x: auto; }
.highlight pre { margin: 0; }

/* Tables */
.post-content table { width: 100%; border-collapse: collapse; font-size: 0.95rem; font-family: var(--font-sans); }
.post-content th, .post-content td { padding: var(--space-2) var(--space-3); border: 1px solid var(--color-border); text-align: left; }
.post-content thead th { background: var(--color-surface); }

/* ---------- Tags ---------- */
.post-tags { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-7); }
.tag-pill {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-1) var(--space-3); border-radius: 999px;
  background: var(--color-surface-2); color: var(--color-text-soft);
  font-size: 0.85rem; font-weight: 500;
}
.tag-pill:hover { background: var(--color-accent-soft); color: var(--color-accent); text-decoration: none; }

/* ---------- Post nav (prev/next) ---------- */
.post-nav {
  display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4);
  margin-top: var(--space-7); padding-top: var(--space-6); border-top: 1px solid var(--color-border);
}
.post-nav a {
  display: flex; flex-direction: column; gap: var(--space-1);
  padding: var(--space-4); border: 1px solid var(--color-border); border-radius: var(--radius);
  background: var(--color-surface);
}
.post-nav a:hover { border-color: var(--color-accent); text-decoration: none; }
.post-nav-next { text-align: right; }
.post-nav-label { font-size: 0.8rem; color: var(--color-text-muted); }
.post-nav-title { font-weight: 600; color: var(--color-text); }
@media (max-width: 600px) { .post-nav { grid-template-columns: 1fr; } .post-nav-next { text-align: left; } }

/* ---------- Comments ---------- */
.comments { max-width: var(--measure); margin: var(--space-8) auto 0; }

/* ---------- Page heads / taxonomy ---------- */
.page-head { margin-bottom: var(--space-7); }
.page-head h1 { font-size: 2rem; margin: var(--space-1) 0; letter-spacing: -0.02em; }
.page-head-eyebrow { text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.75rem; font-weight: 700; color: var(--color-accent); margin: 0; }
.page-head-sub { color: var(--color-text-muted); margin: 0; }

.taxonomy-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: var(--space-1); max-width: var(--measure); }
.taxonomy-list li { display: flex; justify-content: space-between; align-items: center; padding: var(--space-3) var(--space-4); border-radius: var(--radius-sm); }
.taxonomy-list li:hover { background: var(--color-surface); }
.taxonomy-count { color: var(--color-text-muted); font-size: 0.85rem; background: var(--color-surface-2); padding: 0 var(--space-2); border-radius: 999px; }
.tag-cloud { display: flex; flex-wrap: wrap; gap: var(--space-3); }

/* ---------- Archives ---------- */
.archive-list { list-style: none; padding: 0; margin: 0; max-width: var(--measure); }
.archive-year h2 { font-size: 1.5rem; margin: var(--space-6) 0 var(--space-3); color: var(--color-text-muted); }
.archive-year-list { list-style: none; padding: 0; margin: 0; }
.archive-item { display: flex; gap: var(--space-4); padding: var(--space-2) 0; align-items: baseline; }
.archive-item time { flex: 0 0 4.5rem; color: var(--color-text-muted); font-size: 0.85rem; font-variant-numeric: tabular-nums; }
.archive-item a { color: var(--color-text); }
.archive-item a:hover { color: var(--color-accent); }

/* ---------- Pagination ---------- */
.pagination {
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-4);
  margin-top: var(--space-8); padding-top: var(--space-5); border-top: 1px solid var(--color-border);
}
.pagination a { font-weight: 600; }
.pagination .is-disabled { color: var(--color-text-muted); opacity: 0.5; }
.pagination-status { color: var(--color-text-muted); font-size: 0.875rem; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--color-border); margin-top: var(--space-8); padding-block: var(--space-6); background: var(--color-surface); }
.footer-inner { display: flex; flex-direction: column; gap: var(--space-3); align-items: center; text-align: center; }
.social-links { display: flex; flex-wrap: wrap; gap: var(--space-4); list-style: none; padding: 0; margin: 0; }
.social-links a { color: var(--color-text-soft); font-weight: 500; font-size: 0.9rem; }
.footer-meta { color: var(--color-text-muted); font-size: 0.85rem; margin: 0; }

/* ---------- Search modal ---------- */
.search-modal { position: fixed; inset: 0; z-index: 200; display: flex; align-items: flex-start; justify-content: center; }
.search-modal[hidden] { display: none; }
.search-modal-backdrop { position: absolute; inset: 0; background: rgba(15, 19, 28, 0.55); }
.search-modal-panel {
  position: relative; margin-top: 8vh; width: min(40rem, 92vw);
  background: var(--color-bg); border-radius: var(--radius); box-shadow: var(--shadow-md);
  padding: 3.5rem var(--space-6) var(--space-6); max-height: 80vh; overflow-y: auto;
}
.search-modal-close {
  position: absolute; top: var(--space-3); right: var(--space-3); width: 32px; height: 32px;
  border: none; background: var(--color-surface-2); border-radius: 50%; cursor: pointer;
  font-size: 1.25rem; line-height: 1; color: var(--color-text-soft);
}
.search-modal-close:hover { background: var(--color-border); }

/* Pagefind UI theming */
:root {
  --pagefind-ui-primary: var(--color-accent);
  --pagefind-ui-text: var(--color-text);
  --pagefind-ui-background: var(--color-bg);
  --pagefind-ui-border: var(--color-border);
  --pagefind-ui-tag: var(--color-surface-2);
  --pagefind-ui-border-radius: var(--radius-sm);
  --pagefind-ui-font: var(--font-sans);
}

/* ---------- Pygments syntax highlighting (light) ---------- */
.highlight .hll { background-color: #ffffcc }
.highlight .c, .highlight .ch, .highlight .cm, .highlight .c1, .highlight .cs { color: #998; font-style: italic }
.highlight .err { color: #a61717 }
.highlight .k, .highlight .kc, .highlight .kd, .highlight .kn, .highlight .kp, .highlight .kr { color: #069; font-weight: 600 }
.highlight .kt { color: #458; font-weight: 600 }
.highlight .o, .highlight .ow { color: #555 }
.highlight .cp { color: #999; font-weight: 600 }
.highlight .gd { color: #000; background-color: #fdd }
.highlight .gi { color: #000; background-color: #dfd }
.highlight .gh { color: #999 }
.highlight .gu { color: #aaa }
.highlight .gp { color: #555 }
.highlight .gs { font-weight: 600 }
.highlight .ge { font-style: italic }
.highlight .gr { color: #a00 }
.highlight .gt { color: #a00 }
.highlight .m, .highlight .mb, .highlight .mf, .highlight .mh, .highlight .mi, .highlight .il, .highlight .mo { color: #099 }
.highlight .s, .highlight .sb, .highlight .sc, .highlight .sd, .highlight .s2, .highlight .se, .highlight .sh, .highlight .si, .highlight .sx, .highlight .s1, .highlight .sa, .highlight .dl { color: #d14 }
.highlight .sr { color: #009926 }
.highlight .ss { color: #990073 }
.highlight .na { color: #008080 }
.highlight .nb, .highlight .bp { color: #0086b3 }
.highlight .nc { color: #458; font-weight: 600 }
.highlight .no { color: #008080 }
.highlight .nd { color: #3c5d5d; font-weight: 600 }
.highlight .ni { color: #800080 }
.highlight .ne { color: #900; font-weight: 600 }
.highlight .nf, .highlight .fm { color: #900; font-weight: 600 }
.highlight .nl { color: #990000; font-weight: 600 }
.highlight .nn { color: #555 }
.highlight .nt { color: #000080 }
.highlight .nv, .highlight .vc, .highlight .vg, .highlight .vi, .highlight .vm { color: #008080 }
.highlight .w { color: #bbb }

@media (prefers-color-scheme: dark) {
  .highlight .c, .highlight .ch, .highlight .cm, .highlight .c1, .highlight .cs { color: #8a93a5 }
  .highlight .k, .highlight .kc, .highlight .kd, .highlight .kn, .highlight .kp, .highlight .kr { color: #79b8ff }
  .highlight .kt { color: #b392f0 }
  .highlight .o, .highlight .ow { color: #b3bac8 }
  .highlight .nc, .highlight .nf, .highlight .fm { color: #f0c674 }
  .highlight .s, .highlight .s1, .highlight .s2, .highlight .sb, .highlight .sd { color: #9ecbff }
  .highlight .m, .highlight .mi, .highlight .mf { color: #79c0ff }
  .highlight .nb, .highlight .bp { color: #56d4c4 }
  .highlight .nt { color: #7ee787 }
  .highlight .gd { color: #f0f0f0; background-color: #3a1f24 }
  .highlight .gi { color: #f0f0f0; background-color: #1f3a26 }
}

/* ---------- Misc ---------- */
.error-page { text-align: center; padding-block: var(--space-8); }

@media (max-width: 640px) {
  .post-title { font-size: 1.75rem; }
  .post-content { font-size: 1.0625rem; }
  main.container { padding-block: var(--space-6); }
}