/* Academic-minimal with techy retro flair
   Serif body (reads as researcher) + monospace accents + CRT amber
   highlights + subtle dotted grid background. */

:root {
  --ink: #1a1a1a;
  --ink-soft: #3d3a33;
  --ink-faint: #8a857a;
  --paper: #f5f1e6;          /* warm cream, reminiscent of old paper / amber terminal */
  --paper-dark: #ece6d5;
  --rule: #d9d2bf;
  --accent: #b44a1a;          /* burnt amber — CRT / vintage signal */
  --accent-soft: #f5e3d2;
  --accent-deep: #7a2f10;
  --ok: #4a6b2a;
  --max: 720px;
  --max-wide: 1080px;

  --mono: "JetBrains Mono", "IBM Plex Mono", "Berkeley Mono", "SF Mono",
          "Menlo", "Consolas", ui-monospace, monospace;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua",
           Georgia, serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;

  /* Paper + dotted grid — a quiet hint of a terminal / graph-paper */
  background-color: var(--paper);
  background-image:
    radial-gradient(rgba(26,26,26,0.08) 1px, transparent 1px);
  background-size: 22px 22px;
  background-position: 0 0;
}

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

a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--rule);
  text-underline-offset: 3px;
  transition: text-decoration-color 0.15s ease, color 0.15s ease;
}
a:hover { text-decoration-color: var(--accent); color: var(--accent-deep); }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 3.5rem 1.5rem 6rem;
}
.wrap.wide { max-width: var(--max-wide); }

/* --- Header / nav --- */
header.site {
  border-bottom: 1px solid var(--rule);
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 1rem;
  max-width: var(--max-wide);
  margin: 0 auto;
  background: var(--paper);
  position: relative;
}
/* Thin "status bar" line above header — faint CRT vibe */
header.site::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--accent) 12%,
    var(--accent) 14%,
    transparent 16%,
    transparent 100%);
  opacity: 0.85;
}
header.site .brand {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--ink);
}
header.site .brand::before {
  content: "~/";
  color: var(--accent);
  margin-right: 0.1rem;
}
header.site nav {
  display: flex;
  gap: 1.25rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  letter-spacing: 0.01em;
}
header.site nav a {
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 0.15s, border-color 0.15s;
}
header.site nav a::before { content: "/"; color: var(--ink-faint); margin-right: 2px; }
header.site nav a:hover,
header.site nav a.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
header.site nav a.active::before { color: var(--accent); }

/* --- Typography --- */
h1, h2, h3 {
  font-weight: 600;
  color: var(--ink);
  line-height: 1.2;
  letter-spacing: -0.01em;
}
h1 {
  font-size: 2.35rem;
  margin: 0 0 0.35rem;
  position: relative;
}
h1 .subtitle {
  display: block;
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--ink-faint);
  margin-top: 0.75rem;
  letter-spacing: 0.02em;
}
h1 .subtitle::before { content: "// "; color: var(--accent); }

h2 {
  font-size: 1.3rem;
  margin: 2.75rem 0 0.75rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--rule);
  font-family: var(--mono);
  letter-spacing: 0.01em;
}
h2::before {
  content: "## ";
  color: var(--accent);
  font-weight: 400;
}
h3 {
  font-size: 1.08rem;
  margin: 1.75rem 0 0.4rem;
}
p { margin: 0 0 1rem; }
small, .meta {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink-faint);
  letter-spacing: 0.02em;
}

/* Blinking caret on home — CRT touch */
.cursor {
  display: inline-block;
  width: 0.6ch;
  background: var(--accent);
  color: transparent;
  margin-left: 0.15ch;
  animation: blink 1.05s steps(1) infinite;
}
@keyframes blink {
  50% { opacity: 0; }
}

/* Inline code style */
code, kbd {
  font-family: var(--mono);
  font-size: 0.9em;
  background: var(--paper-dark);
  padding: 0.05em 0.35em;
  border: 1px solid var(--rule);
  border-radius: 2px;
}

/* --- Lists of items --- */
.list { list-style: none; padding: 0; margin: 0; }
.list li {
  padding: 1.1rem 0;
  border-bottom: 1px dashed var(--rule);
  position: relative;
}
.list li:last-child { border-bottom: none; }
.list .title {
  font-weight: 600;
  font-size: 1.05rem;
}
.list .desc {
  color: var(--ink-soft);
  margin-top: 0.3rem;
}
.list .meta { display: block; margin-top: 0.4rem; }

.tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--accent);
  padding: 0.1rem 0.45rem;
  border-radius: 2px;
  margin-right: 0.5rem;
  vertical-align: 2px;
}
.tag::before { content: "["; opacity: 0.6; margin-right: 1px; }
.tag::after  { content: "]"; opacity: 0.6; margin-left: 1px; }

/* --- Contact row --- */
.contact {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--ink-soft);
}
.contact a {
  color: var(--ink-soft);
  text-decoration: none;
  border: 1px solid var(--rule);
  padding: 0.3rem 0.7rem;
  border-radius: 2px;
  background: var(--paper);
  transition: all 0.15s ease;
}
.contact a::before { content: "> "; color: var(--accent); }
.contact a:hover {
  border-color: var(--accent);
  color: var(--accent-deep);
  background: var(--accent-soft);
}

/* --- Footer --- */
footer.site {
  border-top: 1px solid var(--rule);
  padding: 1.25rem 1.5rem;
  text-align: center;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  max-width: var(--max-wide);
  margin: 0 auto;
}
footer.site::before { content: "── "; color: var(--accent); opacity: 0.7; }
footer.site::after  { content: " ──"; color: var(--accent); opacity: 0.7; }

/* --- Embed --- */
.embed-frame {
  width: 100%;
  height: 80vh;
  min-height: 600px;
  border: 1px solid var(--ink);
  border-radius: 2px;
  background: #fff;
  box-shadow: 3px 3px 0 var(--rule);
}

/* --- Canvas page --- */
.canvas-hint {
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 0.82rem;
  margin-bottom: 1rem;
}
.canvas-hint::before { content: "# "; color: var(--accent); }

#canvas-stage {
  width: 100%;
  height: 75vh;
  min-height: 560px;
  border: 1px solid var(--ink);
  background:
    linear-gradient(var(--paper-dark) 1px, transparent 1px) 0 0 / 28px 28px,
    linear-gradient(90deg, var(--paper-dark) 1px, transparent 1px) 0 0 / 28px 28px,
    var(--paper);
  border-radius: 2px;
  overflow: hidden;
  position: relative;
  cursor: grab;
  touch-action: none;
  box-shadow: 4px 4px 0 var(--rule);
}
#canvas-stage.panning { cursor: grabbing; }
#canvas-stage svg { width: 100%; height: 100%; display: block; }

.node rect {
  fill: var(--paper);
  stroke: var(--ink);
  stroke-width: 1.25;
  transition: stroke 0.15s, fill 0.15s;
}
.node text {
  font-family: var(--mono);
  font-size: 11px;
  fill: var(--ink);
  pointer-events: none;
}
.node .author {
  font-size: 10px;
  fill: var(--ink-faint);
}
.node:hover rect { stroke: var(--accent); fill: var(--accent-soft); }

.edge {
  stroke: var(--ink-faint);
  stroke-width: 1;
  opacity: 0.45;
  fill: none;
  stroke-dasharray: 3 3;
}

.legend {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
  margin-top: 1rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
}
.legend span::before {
  content: "";
  display: inline-block;
  width: 9px;
  height: 9px;
  margin-right: 0.45rem;
  vertical-align: middle;
  border: 1px solid var(--ink);
}
.legend .labor::before         { background: #b44a1a; }
.legend .productivity::before  { background: #2a6b8b; }
.legend .policy::before        { background: #5a7a3a; }
.legend .concentration::before { background: #8b6a2a; }
.legend .safety::before        { background: #5a3a7a; }

/* --- Home: hero + bento grid --- */
.home { padding-top: 2.75rem; }

.hero {
  text-align: left;
  margin-bottom: 2.5rem;
  max-width: 760px;
}
.hero h1 { font-size: 2.75rem; }
.hero .lede {
  font-size: 1.1rem;
  color: var(--ink-soft);
  margin: 1rem 0 1.4rem;
  max-width: 62ch;
}

.bento {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-template-rows: auto auto auto;
  grid-template-areas:
    "research research podcast"
    "research research writing"
    "canvas   canvas   canvas";
  gap: 1.25rem;
  margin-top: 1rem;
}
.card-research { grid-area: research; }
.card-podcast  { grid-area: podcast; }
.card-writing  { grid-area: writing; }
.card-canvas   { grid-area: canvas; }

/* Terminal-window card */
.card {
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border: 1px solid var(--ink);
  border-radius: 3px;
  text-decoration: none;
  color: var(--ink);
  overflow: hidden;
  box-shadow: 4px 4px 0 var(--rule);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s;
  min-height: 200px;
}
.card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--accent-soft);
  border-color: var(--accent-deep);
}
.card:hover .card-cta { color: var(--accent-deep); }

.card-head {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0.5rem 0.85rem;
  background: var(--paper-dark);
  border-bottom: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--ink-faint);
  text-transform: lowercase;
}
.card-head .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1px solid var(--ink-faint);
  background: transparent;
  display: inline-block;
}
.card-head .dot:nth-child(1) { background: #e87a4e; border-color: #b45a2a; }
.card-head .dot:nth-child(2) { background: #e8c24e; border-color: #b49a2a; }
.card-head .dot:nth-child(3) { background: #7aa84a; border-color: #557a2a; }
.card-head .card-label {
  margin-left: auto;
  font-size: 0.7rem;
}

.card-body {
  padding: 1.2rem 1.3rem 1.3rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  flex: 1;
}
.card-body h3 {
  font-family: var(--serif);
  font-size: 1.2rem;
  margin: 0.3rem 0 0.15rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
}
.card-body .tag { align-self: flex-start; }
.card-desc {
  color: var(--ink-soft);
  font-size: 0.95rem;
  margin: 0;
}
.card-meta {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  margin-top: 0.4rem;
  display: flex;
  gap: 0.4rem;
}
.card-cta {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--accent);
  margin-top: auto;
  padding-top: 0.8rem;
  letter-spacing: 0.02em;
}

/* Research card — compact featured + papers list */
.card-research .card-body {
  padding: 1.1rem 1.3rem 1.2rem;
  gap: 0.9rem;
}
.card-research h3 {
  font-size: 1.2rem;
  margin: 0.25rem 0 0.15rem;
}
.card-research .card-desc {
  font-size: 0.92rem;
  line-height: 1.55;
}

.research-item {
  display: block;
  text-decoration: none;
  color: var(--ink);
  padding-bottom: 0.9rem;
  border-bottom: 1px dashed var(--rule);
}
.research-item:hover h3 { color: var(--accent-deep); }

.papers-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.papers-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.2rem;
}
.paper-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.4rem 0;
  text-decoration: none;
  color: var(--ink);
  border-bottom: 1px dotted var(--rule);
  transition: color 0.15s;
}
.paper-item:last-child { border-bottom: none; }
.paper-item::before {
  content: "›";
  color: var(--accent);
  font-family: var(--mono);
  margin-right: 0.1rem;
  flex-shrink: 0;
}
.paper-item:hover { color: var(--accent-deep); }
.paper-title {
  font-size: 0.92rem;
  font-family: var(--serif);
  flex: 1;
}
.paper-meta {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--ink-faint);
  letter-spacing: 0.03em;
  white-space: nowrap;
}

/* Canvas teaser — horizontal split */
.card-canvas .card-body {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 1.4rem;
  align-items: center;
  padding: 1.2rem 1.6rem 1.3rem;
}
.canvas-preview {
  color: var(--ink-soft);
  background:
    linear-gradient(var(--paper-dark) 1px, transparent 1px) 0 0 / 20px 20px,
    linear-gradient(90deg, var(--paper-dark) 1px, transparent 1px) 0 0 / 20px 20px,
    var(--paper);
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 0.5rem;
}
.canvas-preview svg { width: 100%; height: auto; display: block; }
.mini-node rect {
  fill: var(--paper);
  stroke: var(--ink);
  stroke-width: 1;
}
.card-canvas:hover .mini-node rect { stroke: var(--accent); fill: var(--accent-soft); }
.canvas-copy h3 { margin-top: 0; }

/* --- Responsive --- */
@media (max-width: 900px) {
  .bento {
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      "research research"
      "podcast  writing"
      "canvas   canvas";
  }
  .card-canvas .card-body {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  html, body { font-size: 17px; background-size: 18px 18px; }
  .wrap { padding: 2rem 1.25rem 4rem; }
  h1 { font-size: 1.85rem; }
  .hero h1 { font-size: 2.1rem; }
  header.site { padding: 0.85rem 1.25rem; }
  header.site nav { gap: 0.9rem; font-size: 0.8rem; }
  .contact { gap: 0.5rem; }
  .contact a { padding: 0.25rem 0.55rem; font-size: 0.8rem; }
  .bento {
    grid-template-columns: 1fr;
    grid-template-areas:
      "research"
      "podcast"
      "writing"
      "canvas";
    gap: 1rem;
  }
  .card-research h3 { font-size: 1.3rem; }
}