/* CtrlAltUpgrade site styles. Colours, type and spacing come from tokens.css
   (a copy of taalexander0614/ctrlaltupgrade-brand/tokens/tokens.css). */

@font-face { font-family: 'Poppins'; font-style: normal; font-weight: 400; font-display: swap; src: url('../fonts/poppins-latin-400-normal.woff2') format('woff2'); }
@font-face { font-family: 'Poppins'; font-style: normal; font-weight: 600; font-display: swap; src: url('../fonts/poppins-latin-600-normal.woff2') format('woff2'); }
@font-face { font-family: 'Poppins'; font-style: normal; font-weight: 700; font-display: swap; src: url('../fonts/poppins-latin-700-normal.woff2') format('woff2'); }
@font-face { font-family: 'JetBrains Mono'; font-style: normal; font-weight: 400; font-display: swap; src: url('../fonts/jetbrains-mono-latin-400-normal.woff2') format('woff2'); }

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; background-color: #f58545; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

body {
  margin: 0;
  min-height: 100vh;
  padding: 40px 20px;
  background: var(--cau-gradient-page);
  background-color: var(--cau-orange);
  font-family: var(--cau-font-sans);
  font-size: var(--cau-size-base);
  line-height: var(--cau-leading-body);
  color: var(--cau-text-body);
}

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

a { color: var(--cau-accent-text); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, button:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid var(--cau-focus);
  outline-offset: 2px;
  border-radius: 4px;
}

h1, h2, h3, h4 { color: var(--cau-text-heading); font-weight: 600; line-height: var(--cau-leading-heading); margin: 0; }
h2 .accent, h3 .accent, .accent { color: var(--cau-accent-text); }

code, pre { font-family: var(--cau-font-mono); font-size: .9em; }
pre { background: var(--cau-surface-raised); padding: var(--cau-space-3) var(--cau-space-4); border-radius: 6px; overflow-x: auto; color: var(--cau-text-heading); }

.skip-link { position: absolute; left: -9999px; top: 10px; z-index: 10; background: var(--cau-accent-fill); color: var(--cau-text-on-accent); padding: 8px 14px; border-radius: 6px; }
.skip-link:focus { left: 10px; }

.visually-hidden { position: absolute !important; width: 1px; height: 1px; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- Shell ---------- */
.shell {
  max-width: 1040px;
  margin: 0 auto;
  background: var(--cau-surface-base);
  border-radius: 20px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, .22);
  overflow: hidden;
}

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--cau-space-3) var(--cau-space-4);
  padding: var(--cau-space-4) var(--cau-space-5);
  background: var(--cau-surface-raised);
}
.wordmark { font-weight: 600; font-size: 20px; color: var(--cau-text-heading); text-decoration: none; }
.wordmark span { color: var(--cau-accent-text); }
.site-nav ul { list-style: none; display: flex; flex-wrap: wrap; gap: 4px 18px; margin: 0; padding: 0; }
.site-nav a { color: var(--cau-text-heading); text-decoration: none; font-size: var(--cau-size-sm); padding: 4px 0; border-bottom: 2px solid transparent; }
.site-nav a:hover, .site-nav a[aria-current="page"] { border-bottom-color: var(--cau-control-border); }

.theme-toggle {
  display: inline-flex; align-items: center; gap: 8px;
  font: inherit; font-size: var(--cau-size-sm);
  color: var(--cau-text-heading);
  background: transparent;
  border: 2px solid var(--cau-control-border);
  border-radius: var(--cau-radius-pill);
  padding: 5px 14px;
  cursor: pointer;
}
.theme-toggle:hover { background: var(--cau-accent-fill); color: var(--cau-text-on-accent); }
.theme-toggle svg { width: 16px; height: 16px; }

main { padding: var(--cau-space-6) var(--cau-space-5); }
section { scroll-margin-top: 20px; }
section + section { margin-top: 70px; }

.section-title { font-size: var(--cau-size-h2); margin-bottom: var(--cau-space-5); }
.section-title::after {
  content: ""; display: block; width: 48px; height: 4px; margin-top: 12px;
  background: var(--cau-accent-fill); border-radius: 2px;
}
.sub-title { font-size: var(--cau-size-h3); margin: var(--cau-space-5) 0 var(--cau-space-4); }

/* ---------- Hero ---------- */
.hero { display: grid; grid-template-columns: 220px 1fr; gap: var(--cau-space-5); align-items: center; }
.avatar { width: 220px; height: 220px; border-radius: 50%; background: #fff; padding: 8px; box-shadow: 0 0 0 2px var(--cau-border); }
.hero h1 { font-size: var(--cau-size-display); }
.hero .role { font-size: var(--cau-size-lg); color: var(--cau-text-heading); margin: 6px 0 var(--cau-space-3); }
.hero p { max-width: 62ch; margin: 0 0 var(--cau-space-3); }
.hero-links { display: flex; flex-wrap: wrap; gap: var(--cau-space-2); margin-top: var(--cau-space-4); padding: 0; list-style: none; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: .7em 1.6em;
  border: 2px solid var(--cau-control-border);
  border-radius: var(--cau-radius-pill);
  color: var(--cau-text-heading);
  background: transparent;
  text-decoration: none;
  box-shadow: var(--cau-shadow-button);
  font-size: var(--cau-size-sm);
}
.btn:hover { background: var(--cau-accent-fill); color: var(--cau-text-on-accent); }
.btn svg { width: 16px; height: 16px; flex-shrink: 0; }
.btn-solid { background: var(--cau-accent-fill); color: var(--cau-text-on-accent); }

/* ---------- Grids and cards ---------- */
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--cau-space-4); }
.card {
  border: 2px solid var(--cau-border);
  border-radius: var(--cau-radius-card);
  padding: var(--cau-space-4);
  background: var(--cau-surface-base);
  box-shadow: var(--cau-shadow-card);
}
.card h3, .card h4 { font-size: 17px; margin-bottom: 8px; }
.card p { margin: 0 0 12px; font-size: var(--cau-size-sm); }
.card .icon { width: 28px; height: 28px; color: var(--cau-accent-text); margin-bottom: 10px; }

.tags { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; }
.tags li { background: var(--cau-surface-chip); color: var(--cau-chip-text); border-radius: var(--cau-radius-chip); padding: 3px 10px; font-size: var(--cau-size-xs); line-height: 1.6; }
.tags.lg li { font-size: 13px; padding: 5px 12px; }

.status { font-size: var(--cau-size-xs); color: var(--cau-text-muted); font-weight: 400; }

/* ---------- Background ---------- */
.two-col { display: grid; grid-template-columns: 1.3fr 1fr; gap: var(--cau-space-5); }
.timeline { list-style: none; margin: 0; padding: 0; border-left: 2px solid var(--cau-border); }
.timeline li { position: relative; padding: 0 0 var(--cau-space-5) var(--cau-space-4); }
.timeline li::before {
  content: ""; position: absolute; left: -8px; top: 6px; width: 14px; height: 14px;
  border-radius: 50%; background: var(--cau-surface-base); border: 3px solid var(--cau-accent-fill);
}
.timeline .when { font-size: var(--cau-size-sm); color: var(--cau-text-muted); }
.timeline h4 { font-size: 17px; margin: 2px 0; }
.timeline .where { font-size: var(--cau-size-sm); color: var(--cau-text-muted); margin: 0 0 6px; }
.timeline p { margin: 0; font-size: var(--cau-size-sm); }

/* ---------- Writing ---------- */
.post-list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--cau-space-4); grid-template-columns: repeat(2, minmax(0, 1fr)); }
.post-card { display: block; text-decoration: none; color: inherit; overflow: hidden; padding: 0; }
.post-card img { aspect-ratio: 16 / 9; object-fit: cover; width: 100%; }
.post-card .body { padding: var(--cau-space-4); }
.post-card h3 { color: var(--cau-text-heading); text-decoration: underline; text-decoration-color: transparent; }
.post-card:hover h3 { text-decoration-color: var(--cau-accent-text); }
.post-meta { font-size: var(--cau-size-sm); color: var(--cau-text-muted); margin: 0 0 6px; }

/* ---------- Contact ---------- */
.contact-list { list-style: none; margin: 0 0 var(--cau-space-5); padding: 0; display: grid; gap: 10px; max-width: 520px; }
.contact-list li { display: flex; align-items: center; gap: 14px; padding: 12px 18px; border: 2px solid var(--cau-border); border-radius: var(--cau-radius-card); overflow-wrap: anywhere; }
.contact-list svg { width: 20px; height: 20px; color: var(--cau-accent-text); flex-shrink: 0; }
.contact-list a { color: var(--cau-text-heading); }

/* ---------- Footer ---------- */
.site-footer {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px;
  padding: var(--cau-space-4) var(--cau-space-5);
  background: var(--cau-surface-raised);
  font-size: var(--cau-size-sm);
  color: var(--cau-text-muted);
}
.site-footer ul { list-style: none; display: flex; gap: 14px; margin: 0; padding: 0; }
.site-footer a { color: var(--cau-text-heading); display: inline-flex; }
.site-footer svg { width: 20px; height: 20px; }

/* ---------- Article (blog posts) ---------- */
.article { max-width: 72ch; margin: 0 auto; }
.article .hero-img { border-radius: var(--cau-radius-card); margin-bottom: var(--cau-space-5); aspect-ratio: 16 / 9; object-fit: cover; width: 100%; }
.article h1 { font-size: 36px; margin-bottom: 10px; }
.article h2 { font-size: var(--cau-size-h3); margin: var(--cau-space-5) 0 var(--cau-space-3); }
.article p, .article li { font-size: 16px; }
.article .back { display: inline-block; margin-bottom: var(--cau-space-4); font-size: var(--cau-size-sm); }

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  body { padding: 0; }
  .shell { border-radius: 0; }
  main { padding: var(--cau-space-5) var(--cau-space-4); }
  .site-header, .site-footer { padding: var(--cau-space-4); }
  .hero { grid-template-columns: 1fr; text-align: left; }
  .avatar { width: 140px; height: 140px; }
  .hero h1 { font-size: 36px; }
  .grid, .post-list, .two-col { grid-template-columns: 1fr; }
}

@media print {
  body { background: none; padding: 0; }
  .shell { box-shadow: none; }
  .site-nav, .theme-toggle, .skip-link { display: none; }
}

/* Utilities */
.plain { list-style: none; margin: 0; padding: 0; }
.flush { margin-top: 0; margin-bottom: 0; }
.sub-title.flush { margin-bottom: var(--cau-space-4); }

/* ---------- Blog index, post navigation ---------- */
.more-link { margin-top: var(--cau-space-4); display: flex; flex-wrap: wrap; align-items: center; gap: var(--cau-space-4); }
.rss-link { font-size: var(--cau-size-sm); }

.filters { display: flex; flex-wrap: wrap; gap: 8px; margin: var(--cau-space-4) 0 var(--cau-space-2); }
.filters[hidden] { display: none; }
.chip-btn {
  font: inherit; font-size: 13px; cursor: pointer;
  padding: 5px 14px;
  border-radius: var(--cau-radius-chip);
  border: 2px solid var(--cau-control-border);
  background: transparent;
  color: var(--cau-text-heading);
}
.chip-btn[aria-pressed="true"], .chip-btn:hover { background: var(--cau-accent-fill); color: var(--cau-text-on-accent); }
.chip-btn:focus-visible { outline: 3px solid var(--cau-focus); outline-offset: 2px; }
.filter-status { font-size: var(--cau-size-sm); color: var(--cau-text-muted); min-height: 1.4em; margin: 0 0 var(--cau-space-2); }

.year-group[hidden], .archive-item[hidden] { display: none; }
.archive { border-left: 2px solid var(--cau-border); }
.archive-item { padding: 0 0 var(--cau-space-4) var(--cau-space-4); }
.archive-item > a { font-size: 18px; font-weight: 600; color: var(--cau-text-heading); }
.archive-item .post-meta { margin: 2px 0 4px; }
.archive-item .desc { margin: 0; font-size: var(--cau-size-sm); max-width: 70ch; }

.post-nav { margin-top: var(--cau-space-6); border-top: 2px solid var(--cau-border); padding-top: var(--cau-space-4); }
.post-nav ul { display: grid; grid-template-columns: 1fr 1fr; gap: var(--cau-space-4); }
.post-nav .newer { text-align: right; grid-column: 2; }
.post-nav .older { grid-column: 1; }
.post-nav .label { display: block; font-size: var(--cau-size-xs); text-transform: uppercase; letter-spacing: .06em; color: var(--cau-text-muted); }
.post-nav a { color: var(--cau-text-heading); font-weight: 600; }
.related { margin-top: var(--cau-space-5); }
.related h2 { font-size: var(--cau-size-h3); margin-bottom: var(--cau-space-3); }
.related li { margin-bottom: 10px; }
.related .post-meta { display: block; font-size: var(--cau-size-sm); }
@media (max-width: 820px) {
  .post-nav ul { grid-template-columns: 1fr; }
  .post-nav .newer, .post-nav .older { grid-column: 1; text-align: left; }
}