/* ================================================================
   bmuskalla.dev — "iso robots on graph paper"
   Self-contained design system. No Bootstrap, no external CSS.
   ================================================================ */

:root {
  --paper:      #f3efe4;
  --paper-2:    #efe9db;
  --ink:        #2a2a26;
  --ink-soft:   #6b675c;
  --line:       #d8d2c2;
  --teal:       #3d7d7e;   /* Bodensee */
  --amber:      #d9a441;
  --clay:       #c2704e;
  --sage:       #8d9b6a;
  --font-display: "Bricolage Grotesque", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body { height: 100%; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---------- background canvas ---------- */
#bricks {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* subtle grain of graph paper */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.28;
  pointer-events: none;
}

.page {
  position: relative;
  z-index: 1;
  max-width: 880px;
  margin: 0 auto;
  padding: 0 28px;
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

/* ---------- header ---------- */
header.site {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 32px 0;
  flex-wrap: wrap;
}

.wordmark {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--ink);
  text-decoration: none;
}
.wordmark span { color: var(--teal); }

nav.site { display: flex; gap: 22px; flex-wrap: wrap; }

nav.site a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: lowercase;
  color: var(--ink-soft);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px dashed transparent;
  transition: color 0.15s, border-color 0.15s;
}
nav.site a:hover,
nav.site a:focus-visible { color: var(--teal); border-bottom-color: var(--teal); }
nav.site a.active { color: var(--teal); border-bottom: 1px solid var(--teal); }

/* ---------- main / hero ---------- */
main {
  flex: 1;
}

main.hero {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 48px 0 96px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
  margin-bottom: 20px;
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 14px; height: 9px;
  margin-right: 10px;
  border-radius: 2px;
  background: var(--amber);
  vertical-align: baseline;
}

main.hero h1 {
  font-weight: 800;
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  max-width: 15ch;
}
main.hero h1 em {
  font-style: normal;
  color: var(--teal);
}

.statement {
  margin-top: 28px;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  font-weight: 300;
  max-width: 52ch;
  color: var(--ink);
}
.statement a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1.5px solid var(--teal);
  transition: color 0.15s;
}
.statement a:hover,
.statement a:focus-visible { color: var(--teal); }

.now {
  margin-top: 36px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-soft);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.now .k { color: var(--sage); }
.now a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px dashed var(--ink-soft);
  transition: color 0.15s, border-color 0.15s;
}
.now a:hover,
.now a:focus-visible { color: var(--teal); border-bottom-color: var(--teal); }

.links {
  margin-top: 44px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.links a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink);
  text-decoration: none;
  padding: 8px 14px;
  border: 1px dashed var(--ink-soft);
  border-radius: 6px;
  position: relative;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.links a:hover,
.links a:focus-visible {
  border-style: solid;
  border-color: var(--teal);
  color: var(--teal);
  background: rgba(61, 125, 126, 0.06);
}

/* ================================================================
   CONTENT PAGES (opensource, talks, print, blog, vitae, posts)
   A calm paper panel so text stays readable while robots roam
   in the page margins behind it.
   ================================================================ */

main.content {
  padding: 8px 0 72px;
}

.panel {
  background: rgba(247, 243, 233, 0.86);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 44px clamp(20px, 5vw, 56px);
  margin: 12px 0 40px;
  box-shadow: 0 1px 0 rgba(255,255,255,0.6) inset, 0 10px 40px -28px rgba(42,42,38,0.5);
}

.page-head { margin-bottom: 8px; }

.page-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.page-eyebrow::before {
  content: "";
  width: 14px; height: 9px;
  border-radius: 2px;
  background: var(--amber);
}

.page-title {
  font-weight: 800;
  font-size: clamp(2rem, 4.5vw, 3rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.page-title em { font-style: normal; color: var(--teal); }

.page-lead {
  margin-top: 14px;
  font-weight: 300;
  font-size: 1.08rem;
  max-width: 58ch;
  color: var(--ink);
}

/* --- section within a content page --- */
.section { margin-top: 40px; }
.section:first-of-type { margin-top: 28px; }

.section-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal);
  padding-bottom: 8px;
  margin-bottom: 6px;
  border-bottom: 1px dashed var(--line);
}

/* --- generic entry list (opensource / talks / print) --- */
.entries { list-style: none; }

.entry {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 13px 0;
  border-bottom: 1px dashed var(--line);
}
.entry:last-child { border-bottom: none; }

.entry .marker {
  flex: none;
  width: 1.4em;
  text-align: center;
  color: var(--sage);
  font-size: 0.85rem;
  transform: translateY(1px);
}

.entry .body { flex: 1; }

.entry .lead-link,
.entry .lead {
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
}
a.lead-link { border-bottom: 1.5px solid transparent; transition: color .15s, border-color .15s; }
a.lead-link:hover,
a.lead-link:focus-visible { color: var(--teal); border-bottom-color: var(--teal); }

.entry .desc { color: var(--ink-soft); }
.entry .desc a { color: var(--ink-soft); border-bottom: 1px solid var(--line); text-decoration: none; }
.entry .desc a:hover { color: var(--teal); border-bottom-color: var(--teal); }

.entry .meta {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-soft);
  white-space: nowrap;
}

/* inline links inside descriptions/markdown */
.prose a, .entry .body a[href]:not(.lead-link) {
  color: var(--teal);
}

/* --- highlight card (book contributions) --- */
.highlight-card {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  margin-top: 14px;
  padding: 20px 22px;
  background: rgba(217, 164, 65, 0.08);
  border: 1px solid rgba(217, 164, 65, 0.35);
  border-left: 3px solid var(--amber);
  border-radius: 10px;
}
.highlight-card .cover { flex: none; display: block; }
.highlight-card .cover img {
  width: 66px;
  height: auto;
  border-radius: 3px;
  box-shadow: 0 6px 18px -8px rgba(42,42,38,0.55);
  transition: transform 0.15s, box-shadow 0.15s;
}
.highlight-card .cover:hover img {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px -10px rgba(42,42,38,0.6);
}
.highlight-card .body { flex: 1; }
.highlight-card .lead {
  font-weight: 700;
  font-size: 1.08rem;
  color: var(--ink);
}
.highlight-card .lead a { color: var(--ink); text-decoration: none; border-bottom: 1.5px solid transparent; }
.highlight-card .lead a:hover { color: var(--teal); border-bottom-color: var(--teal); }
.highlight-card .desc { color: var(--ink-soft); margin-top: 2px; }
.highlight-card .desc em { color: var(--ink); font-style: italic; }
.highlight-card .meta {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-soft);
  white-space: nowrap;
}

/* --- vitae: roles --- */
.role {
  padding: 18px 0;
  border-bottom: 1px dashed var(--line);
}
.role:last-child { border-bottom: none; }
.role.past { color: var(--ink-soft); }

.role-head {
  display: flex;
  align-items: center;
  gap: 13px;
}
.role-headings { min-width: 0; }
.role-title { display: block; }
.role-logo {
  flex: none;
  width: 40px;
  height: 40px;
  object-fit: contain;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 5px;
  box-shadow: 0 1px 3px rgba(42,42,38,0.08);
}
.role.past .role-logo { opacity: 0.7; }
.role-title {
  font-weight: 700;
  font-size: 1.12rem;
  color: var(--ink);
}
.role.past .role-title { color: var(--ink-soft); }
.role-title .at { color: var(--teal); font-weight: 600; }
.role.past .role-title .at { color: var(--sage); }
.role-time {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-soft);
  white-space: nowrap;
  margin-top: 3px;
}
.role-body { margin-top: 8px; }
.role-body ul { margin: 0 0 0 1.1em; }
.role-body li { margin: 4px 0; }
.role-body a { color: var(--teal); }
.role.past .role-body a { color: var(--sage); }

/* --- advising landing page --- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 40px;
  align-items: start;
}
.two-col .section { margin-top: 40px; }
@media (max-width: 680px) {
  .two-col { grid-template-columns: 1fr; }
  .two-col .section { margin-top: 28px; }
}

.cta {
  margin-top: 48px;
  padding: 26px 28px 30px;
  background: rgba(217, 164, 65, 0.08);
  border: 1px solid rgba(217, 164, 65, 0.35);
  border-left: 3px solid var(--amber);
  border-radius: 10px;
}
.cta .section-title { border-bottom: none; padding-bottom: 0; }
.cta-lead {
  max-width: 58ch;
  font-weight: 300;
  font-size: 1.05rem;
  margin: 6px 0 4px;
}
.cta .links { margin-top: 20px; }

/* --- book covers (reviewer) --- */
.book-covers {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  align-items: flex-start;
  margin-top: 20px;
}
.book-covers a {
  width: 108px;
  text-align: center;
  text-decoration: none;
  color: var(--ink-soft);
}
.book-covers img {
  width: 108px;
  height: auto;
  border-radius: 3px;
  box-shadow: 0 6px 18px -8px rgba(42,42,38,0.55);
  transition: transform 0.15s, box-shadow 0.15s;
}
.book-covers a:hover img {
  transform: translateY(-3px);
  box-shadow: 0 12px 24px -10px rgba(42,42,38,0.6);
}
.book-covers span {
  display: block;
  margin-top: 10px;
  font-size: 0.72rem;
  line-height: 1.3;
}
.book-covers a:hover span { color: var(--teal); }

/* --- blog archive list --- */
.archive { list-style: none; }
.archive li {
  display: flex;
  gap: 18px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
}
.archive li:last-child { border-bottom: none; }
.archive .date {
  flex: none;
  width: 8.5em;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-soft);
}
.archive a {
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1.5px solid transparent;
  transition: color .15s, border-color .15s;
}
.archive a:hover,
.archive a:focus-visible { color: var(--teal); border-bottom-color: var(--teal); }

/* --- single post --- */
.post-meta {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--ink-soft);
  margin-top: 14px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
}
.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--teal);
  border: 1px dashed var(--line);
  border-radius: 20px;
  padding: 2px 10px;
}
.tags { margin-top: 14px; display: flex; gap: 8px; flex-wrap: wrap; }

.prose {
  margin-top: 8px;
  font-size: 1.05rem;
  line-height: 1.72;
  color: var(--ink);
}
.prose > * + * { margin-top: 1.1em; }
.prose h2 {
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.01em;
  margin-top: 1.8em;
}
.prose h3 {
  font-weight: 700;
  font-size: 1.2rem;
  margin-top: 1.5em;
}
.prose h2 + p, .prose h3 + p { margin-top: 0.6em; }
.prose a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(61,125,126,0.4);
}
.prose a:hover { border-bottom-color: var(--teal); }
.prose ul, .prose ol { margin-left: 1.3em; }
.prose li { margin: 0.3em 0; }
.prose img { max-width: 100%; height: auto; border-radius: 6px; }
.prose blockquote {
  border-left: 3px solid var(--sage);
  padding-left: 18px;
  color: var(--ink-soft);
  font-style: italic;
}
.prose code {
  font-family: var(--font-mono);
  font-size: 0.86em;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 5px;
}
.prose pre {
  background: #2a2a26;
  color: #efe9db;
  border-radius: 10px;
  padding: 18px 20px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.55;
}
.prose pre code {
  background: none;
  border: none;
  padding: 0;
  color: inherit;
  font-size: inherit;
}
.prose hr {
  border: none;
  border-top: 1px dashed var(--line);
  margin: 2.4em 0;
}
.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
.prose th, .prose td {
  border: 1px solid var(--line);
  padding: 8px 12px;
  text-align: left;
}
.prose th { background: var(--paper-2); }

/* related posts + comments below a single post */
.post-after { margin-top: 40px; }
.post-after .section-title { margin-bottom: 12px; }

/* back link */
.backlink {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--ink-soft);
  text-decoration: none;
  margin-bottom: 20px;
}
.backlink:hover { color: var(--teal); }

/* ---------- footer ---------- */
footer.site {
  padding: 24px 0 32px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-soft);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
footer.site a { color: var(--ink-soft); text-decoration: none; border-bottom: 1px dashed var(--line); }
footer.site a:hover { color: var(--teal); }

a:focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; }

@media (max-width: 560px) {
  header.site { padding: 24px 0; }
  main.hero { padding: 32px 0 140px; }
  .panel { padding: 28px 20px; }
  .entry .meta { display: none; }
  .archive li { flex-direction: column; gap: 2px; }
  .archive .date { width: auto; }
}

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