/* ==============================================================
   HIPDURIAN.AI · Terminal-technical
   Pure black · terminal green (#5eff8c) · JetBrains Mono + General Sans
   ============================================================== */

@import url('https://api.fontshare.com/v2/css?f[]=general-sans@400,500,600,700&f[]=jetbrains-mono@400,500&display=swap');

:root {
  --bg:            #000000;
  --bg-2:          #0a0a0a;
  --bg-3:          #111111;
  --bg-elev:       #16161a;
  --text:          #e8e8e8;
  --text-2:        #999999;
  --text-3:        #555555;
  --text-4:        #333333;
  --border:        rgba(94, 255, 140, 0.15);
  --border-strong: rgba(94, 255, 140, 0.35);
  --border-2:      rgba(255, 255, 255, 0.06);
  --border-3:      rgba(255, 255, 255, 0.12);
  --accent:        #5eff8c;
  --accent-dim:    #3ac768;
  --accent-glow:   rgba(94, 255, 140, 0.25);
  --warn:          #ffd580;
  --info:          #7fbbff;

  --font-body: "General Sans", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;

  --text-xs:   clamp(0.72rem, 0.7rem + 0.1vw, 0.78rem);
  --text-sm:   clamp(0.85rem, 0.83rem + 0.1vw, 0.9rem);
  --text-base: clamp(1rem, 0.95rem + 0.2vw, 1.05rem);
  --text-lg:   clamp(1.1rem, 1.05rem + 0.3vw, 1.2rem);
  --text-xl:   clamp(1.3rem, 1.2rem + 0.5vw, 1.5rem);
  --text-2xl:  clamp(1.75rem, 1.5rem + 1vw, 2.25rem);
  --text-3xl:  clamp(2.25rem, 1.8rem + 2vw, 3.25rem);
  --text-hero: clamp(2.75rem, 2rem + 4vw, 5rem);

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 3.5rem;
  --space-xl: 5.5rem;

  --wrap-max: 1120px;
  --wrap-pad: clamp(1rem, 3vw, 2rem);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Subtle scanline texture on body — barely visible, adds "system" feel */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    transparent 0,
    transparent 2px,
    rgba(255, 255, 255, 0.008) 2px,
    rgba(255, 255, 255, 0.008) 3px
  );
  z-index: 1;
  mix-blend-mode: overlay;
}

a { color: inherit; text-decoration: none; }
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

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

/* ============================================================
   WRAP + BASE LAYOUT
   ============================================================ */
.wrap {
  max-width: var(--wrap-max);
  margin: 0 auto;
  padding: 0 var(--wrap-pad);
  position: relative;
  z-index: 2;
}

/* ============================================================
   TOP BAR (site header)
   ============================================================ */
.top-bar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border-2);
}
.top-bar-inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 0.9rem var(--wrap-pad);
  max-width: var(--wrap-max);
  margin: 0 auto;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: -0.005em;
  flex-shrink: 0;
}
.brand img { width: 28px; height: 28px; }
.brand .brand-mark { width: 32px; height: 32px; }
.brand-tag {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  padding: 0.15rem 0.4rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: rgba(94, 255, 140, 0.04);
  margin-left: 0.35rem;
}
.top-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}
.top-nav a {
  color: var(--text-2);
  padding: 0.4rem 0.75rem;
  border-radius: 4px;
  transition: color .15s, background .15s;
  letter-spacing: 0.01em;
}
.top-nav a:hover { color: var(--accent); background: rgba(94, 255, 140, 0.04); }
.top-nav a[aria-current="page"] { color: var(--text); background: rgba(94, 255, 140, 0.08); }
.top-nav .ext { color: var(--text-3); }
.top-nav .ext:hover { color: var(--text); }

/* live indicator */
.live-dot {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  padding: 0.35rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: rgba(94, 255, 140, 0.04);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.live-dot::before {
  content: "";
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 2s infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

/* ============================================================
   CHAPTER RAIL (workflow subsection)
   ============================================================ */
.rail {
  position: sticky;
  top: 61px;
  z-index: 40;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border-2);
}
.rail-inner {
  display: flex;
  align-items: center;
  gap: 0.25rem 0.5rem;
  padding: 0.6rem var(--wrap-pad);
  max-width: var(--wrap-max);
  margin: 0 auto;
  overflow-x: auto;
  scrollbar-width: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}
.rail-inner::-webkit-scrollbar { display: none; }
.rail-home {
  color: var(--text-3);
  padding: 0.3rem 0.5rem;
  border-right: 1px solid var(--border-2);
  margin-right: 0.25rem;
  white-space: nowrap;
}
.rail-home:hover { color: var(--accent); }
.rail a:not(.rail-home) {
  color: var(--text-2);
  padding: 0.3rem 0.55rem;
  border-radius: 3px;
  white-space: nowrap;
  transition: color .15s, background .15s;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.rail a:not(.rail-home):hover { color: var(--accent); background: rgba(94, 255, 140, 0.04); }
.rail a[aria-current="page"] { color: var(--text); background: rgba(94, 255, 140, 0.10); }
.rail-num {
  color: var(--text-3);
  font-variant-numeric: tabular-nums;
  min-width: 1.5em;
}
.rail a[aria-current="page"] .rail-num { color: var(--accent); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  padding: var(--space-xl) 0 var(--space-lg);
  border-bottom: 1px solid var(--border-2);
  position: relative;
}
.hero .eyebrow {
  display: inline-flex; align-items: center; gap: 0.5rem;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: rgba(94, 255, 140, 0.04);
  margin-bottom: 2rem;
}
.hero .eyebrow.status::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 8px var(--accent);
  animation: pulse 2s infinite;
}
.hero h1 {
  font-family: var(--font-body);
  font-size: var(--text-hero);
  line-height: 1.02;
  letter-spacing: -0.035em;
  font-weight: 500;
  margin: 0 0 1.5rem;
  max-width: 22ch;
}
.hero h1 .accent { color: var(--accent); }
.hero .lede {
  font-size: var(--text-lg);
  line-height: 1.55;
  color: var(--text-2);
  max-width: 62ch;
  margin: 0 0 2rem;
}
.hero .thesis {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--text);
  max-width: 62ch;
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--border);
  background: rgba(94, 255, 140, 0.03);
  border-radius: 4px;
  margin: 2rem 0 0;
  position: relative;
}
.hero .thesis::before {
  content: "$ cat thesis.txt";
  position: absolute;
  top: -0.7rem; left: 1rem;
  background: var(--bg);
  color: var(--text-3);
  font-size: 0.7rem;
  padding: 0 0.5rem;
}

/* ============================================================
   SECTION
   ============================================================ */
.section {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--border-2);
}
.section:last-of-type { border-bottom: none; }
.section-head {
  max-width: 62ch;
  margin: 0 0 var(--space-md);
}
.section-num {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 1rem;
}
.section-head h2 {
  font-family: var(--font-body);
  font-size: var(--text-2xl);
  line-height: 1.1;
  letter-spacing: -0.025em;
  font-weight: 500;
  margin: 0 0 0.85rem;
}
.section-head p {
  color: var(--text-2);
  font-size: var(--text-lg);
  line-height: 1.6;
  margin: 0;
}

/* ============================================================
   PROSE (long-form body)
   ============================================================ */
.prose {
  max-width: 62ch;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text);
}
.prose p { margin: 0 0 1.35em; }
.prose p:last-child { margin-bottom: 0; }
.prose strong { color: var(--text); font-weight: 600; }
.prose em { color: var(--accent); font-style: normal; }
.prose h3 {
  font-family: var(--font-body);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 2.75em 0 0.85em;
  color: var(--text);
  position: relative;
  padding-top: 1.5em;
}
.prose h3::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 24px;
  height: 1px;
  background: var(--accent);
}
.prose ul {
  margin: 0 0 1.5em;
  padding-left: 1.5rem;
  list-style: none;
}
.prose ul li {
  margin: 0 0 0.6em;
  position: relative;
  padding-left: 1rem;
}
.prose ul li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.85em;
  top: 0.15em;
}
.prose code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  color: var(--accent);
  background: rgba(94, 255, 140, 0.06);
  padding: 0.1em 0.35em;
  border-radius: 2px;
}

/* ============================================================
   SLACK-STYLED QUOTE
   ============================================================ */
.slack {
  display: flex;
  gap: 0.9rem;
  padding: 1.1rem 1.25rem;
  background: var(--bg-2);
  border: 1px solid var(--border-2);
  border-radius: 4px;
  border-left: 2px solid var(--accent);
  margin: 2em 0;
  max-width: 62ch;
}
.slack-avatar {
  width: 36px; height: 36px; border-radius: 4px;
  background: linear-gradient(135deg, #1a1a1a, #0a0a0a);
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid var(--border-2);
}
.slack-body { flex: 1; min-width: 0; }
.slack-head {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  margin-bottom: 0.35rem;
  flex-wrap: wrap;
}
.slack-name { font-weight: 600; font-size: 0.92rem; color: var(--text); }
.slack-time {
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}
.slack-text {
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1.55;
  margin: 0;
}

/* ============================================================
   ARTEFACT CARD (JSON / sim summary / logs)
   ============================================================ */
.artefact {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.25rem 1.5rem;
  margin: 2em 0;
  max-width: 62ch;
  position: relative;
}
.artefact-label {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.artefact-label::before {
  content: "$";
  opacity: 0.6;
  font-weight: 500;
}
.artefact pre {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--text-2);
  margin: 0;
  overflow-x: auto;
  padding: 0;
  background: none;
}
.artefact .k { color: var(--accent); }
.artefact .s { color: var(--warn); }
.artefact .n { color: var(--info); }
.artefact .c { color: var(--text-3); font-style: italic; }

/* ============================================================
   PILLARS
   ============================================================ */
.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
  margin: 2em 0;
}
.pillar {
  padding: 1.5rem;
  background: var(--bg-2);
  border: 1px solid var(--border-2);
  border-radius: 4px;
  border-top: 2px solid var(--accent);
}
.pillar h4 {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  color: var(--text);
}
.pillar p {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-2);
  margin: 0;
}

/* ============================================================
   CHAPTER GRID (landing)
   ============================================================ */
.chapters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin: 2.5rem 0 0;
}
.chapter-card {
  padding: 1.75rem;
  background: var(--bg-2);
  border: 1px solid var(--border-2);
  border-radius: 4px;
  border-left: 2px solid transparent;
  transition: border-color .18s, background .18s, transform .18s;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  color: inherit;
}
.chapter-card:hover {
  border-left-color: var(--accent);
  background: var(--bg-3);
  transform: translateY(-1px);
}
.chapter-card .num {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  margin: 0;
}
.chapter-card h3 {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1.5rem;
  letter-spacing: -0.015em;
  line-height: 1.15;
  margin: 0;
  color: var(--text);
}
.chapter-card p {
  color: var(--text-2);
  font-size: 0.92rem;
  line-height: 1.6;
  margin: 0;
  flex: 1;
}
.chapter-card .arrow {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  margin-top: auto;
}

/* ============================================================
   BOARD (landing: 8 games in flight)
   ============================================================ */
.board {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin: 2rem 0 0;
}
.board-card {
  padding: 1.1rem 1.25rem;
  background: var(--bg-2);
  border: 1px solid var(--border-2);
  border-radius: 4px;
  border-left: 2px solid var(--stage-color, var(--text-3));
}
.board-card h4 {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  margin: 0 0 0.35rem;
  color: var(--text);
  letter-spacing: -0.01em;
  line-height: 1.25;
}
.board-card .stage {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--stage-color, var(--text-3));
  font-weight: 500;
  margin-bottom: 0.5rem;
}
.board-card .quote {
  font-size: 0.85rem;
  line-height: 1.55;
  color: var(--text-2);
  margin: 0;
  font-style: italic;
}
.board-card .quote::before { content: "\201C"; color: var(--accent); margin-right: 0.15em; }
.board-card .quote::after  { content: "\201D"; color: var(--accent); margin-left: 0.15em; }

.board-card[data-stage="ready"]   { --stage-color: #5eff8c; }
.board-card[data-stage="polish"]  { --stage-color: #a8ff8c; }
.board-card[data-stage="art"]     { --stage-color: #ffd580; }
.board-card[data-stage="audio"]   { --stage-color: #ffd580; }
.board-card[data-stage="math"]    { --stage-color: #ffa550; }
.board-card[data-stage="concept"] { --stage-color: #7fbbff; }
.board-card[data-stage="insight"] { --stage-color: #b78fff; }

/* ============================================================
   TIMELINE (landing)
   ============================================================ */
.timeline {
  margin: 2.5rem 0 0;
  padding: 2rem 0;
}
.timeline-track {
  position: relative;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--border) 8%, var(--border) 92%, transparent);
  margin: 3rem 0 2rem;
}
.timeline-dot {
  position: absolute;
  top: -5px;
  width: 12px;
  height: 12px;
  margin-left: -6px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 3px var(--bg), 0 0 12px var(--accent-glow);
  transition: transform .18s;
}
.timeline-dot::after {
  content: attr(data-label);
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-3);
  white-space: nowrap;
}
.timeline-dot:nth-child(odd)::after {
  top: auto;
  bottom: 20px;
}
.timeline-dot:hover { transform: scale(1.4); }
.timeline-labels {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-3);
  letter-spacing: 0.05em;
}

/* ============================================================
   KEY QUOTE / PULLQUOTE
   ============================================================ */
.pullquote {
  margin: var(--space-md) auto;
  max-width: 62ch;
  padding: 2rem 0;
  border-top: 1px solid var(--border-2);
  border-bottom: 1px solid var(--border-2);
}
.pullquote blockquote {
  font-family: var(--font-body);
  font-size: clamp(1.35rem, 2.2vw, 1.75rem);
  line-height: 1.4;
  letter-spacing: -0.015em;
  font-weight: 500;
  color: var(--text);
  margin: 0 0 0.75rem;
  padding: 0;
  position: relative;
  padding-left: 1.5rem;
}
.pullquote blockquote::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.3em;
  bottom: 0.3em;
  width: 2px;
  background: var(--accent);
}
.pullquote cite {
  font-family: var(--font-mono);
  color: var(--text-3);
  font-size: 0.82rem;
  font-style: normal;
  letter-spacing: 0.02em;
  padding-left: 1.5rem;
  display: block;
}

/* ============================================================
   CHAPTER NAV FOOTER
   ============================================================ */
.navfoot {
  padding: var(--space-md) 0;
  border-top: 1px solid var(--border-2);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.navfoot a {
  display: block;
  padding: 1.5rem 1.75rem;
  background: var(--bg-2);
  border: 1px solid var(--border-2);
  border-radius: 4px;
  transition: border-color .18s, background .18s, transform .18s;
  color: inherit;
}
.navfoot a:hover {
  border-color: var(--accent);
  background: var(--bg-3);
  transform: translateY(-1px);
}
.navfoot a.next { text-align: right; }
.navfoot .navlabel {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.navfoot .navtitle {
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.2;
}
@media (max-width: 640px) {
  .navfoot { grid-template-columns: 1fr; }
  .navfoot a.next { text-align: left; }
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  padding: var(--space-lg) 0 var(--space-md);
  border-top: 1px solid var(--border-2);
  margin-top: var(--space-lg);
}
.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
  justify-content: space-between;
}
.foot-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
  font-weight: 600;
  font-size: 0.9rem;
}
.foot-brand img { width: 24px; height: 24px; }
.foot-brand .foot-mark { width: 28px; height: 28px; }
.foot-nav {
  display: flex;
  gap: 0.25rem;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}
.foot-nav a {
  color: var(--text-3);
  padding: 0.35rem 0.6rem;
  border-radius: 3px;
  transition: color .15s;
}
.foot-nav a:hover { color: var(--accent); }
.foot-copy {
  font-family: var(--font-mono);
  color: var(--text-3);
  font-size: 0.75rem;
  margin: 0;
  width: 100%;
  padding-top: 1rem;
  border-top: 1px solid var(--border-2);
  margin-top: 0.5rem;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .top-nav a:not(.live-dot) { display: none; }
  .top-nav .live-dot { display: inline-flex; }
  .hero .thesis { padding: 1rem 1.25rem; font-size: 0.85rem; }
  .prose { font-size: 1rem; }
}

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