/* =========================================================================
   SAMLLC — Site stylesheet
   Design system + page styles. Single file, no build step.
   ========================================================================= */

/* ----- Tokens -------------------------------------------------------------- */
:root {
  /* Surface */
  --paper:        #F1ECE0;
  --paper-warm:   #E9E2D2;
  --paper-cool:   #ECE7DA;
  --ink:          #16140F;
  --ink-soft:     #2D2A24;
  --ink-mute:     #6A655B;
  --ink-faint:    #8E8A80;
  --rule:         #C9C2B1;
  --rule-soft:    #D9D2C0;

  /* Inverse */
  --night:        #0E0D0A;
  --night-2:      #1A1812;
  --cream:        #EFEAD9;
  --cream-mute:   #B5B0A1;

  /* Brand: Pigeon gradient stops */
  --pg-1:         #5B2D8C;
  --pg-2:         #1F94B4;
  --pg-3:         #2BA868;
  --pg-4:         #3F1B5B;
  --teal:         #0F6E56;
  --teal-soft:    #5B9D8A;

  /* Semantic */
  --signal:       #A6411A;     /* burnt sienna for accent figures */
  --signal-soft:  #C7714B;

  /* Type scale */
  --display-1:    clamp(3.6rem, 7.2vw, 7rem);
  --display-2:    clamp(2.6rem, 4.6vw, 4.4rem);
  --headline:     clamp(1.7rem, 2.6vw, 2.4rem);
  --title:        1.2rem;
  --body:         1.0625rem;
  --small:        0.9375rem;
  --micro:        0.75rem;

  /* Layout */
  --gutter:       2rem;
  --col-narrow:   42rem;
  --col-wide:     68rem;
  --col-full:     78rem;
}

/* ----- Reset -------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
img, svg, video { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; }
a { color: inherit; }

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: 'Instrument Sans', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  font-size: var(--body);
  line-height: 1.55;
  font-feature-settings: 'ss01' on, 'cv11' on;

  /* Subtle paper grain — pure CSS, no asset */
  background-image:
    radial-gradient(circle at 22% 18%, rgba(91, 45, 140, 0.025) 0, transparent 40%),
    radial-gradient(circle at 82% 78%, rgba(31, 148, 180, 0.022) 0, transparent 38%),
    repeating-linear-gradient(
      0deg,
      rgba(22, 20, 15, 0.012) 0px,
      rgba(22, 20, 15, 0.012) 1px,
      transparent 1px,
      transparent 3px
    );
}

/* ----- Type --------------------------------------------------------------- */
.serif {
  font-family: 'Fraunces', 'Iowan Old Style', 'Source Serif 4', Georgia, serif;
  font-feature-settings: 'ss01' on, 'liga' on, 'kern' on;
  font-variation-settings: 'opsz' 144, 'SOFT' 100;
}
.mono {
  font-family: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;
  font-feature-settings: 'zero' on, 'ss01' on;
}

h1, h2, h3, h4, h5 {
  font-family: 'Fraunces', 'Iowan Old Style', Georgia, serif;
  font-variation-settings: 'opsz' 144, 'SOFT' 30;
  font-weight: 400;
  letter-spacing: -0.015em;
  line-height: 1.05;
  margin: 0;
  color: var(--ink);
}

p { margin: 0 0 1em 0; max-width: 38em; }
p.lead {
  font-size: 1.25rem;
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: 36em;
  font-weight: 400;
}
.serif-italic {
  font-family: 'Fraunces', Georgia, serif;
  font-style: italic;
  font-variation-settings: 'opsz' 144, 'SOFT' 100;
}

a { text-decoration: none; }
a:hover { color: var(--teal); }

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

/* ----- Layout primitives -------------------------------------------------- */
.shell {
  width: 100%;
  max-width: var(--col-full);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.shell-narrow { max-width: var(--col-narrow); margin: 0 auto; padding: 0 var(--gutter); }
.shell-wide { max-width: var(--col-wide); margin: 0 auto; padding: 0 var(--gutter); }

.rule {
  height: 1px;
  background: var(--rule);
  border: none;
  margin: 0;
}
.rule-soft { background: var(--rule-soft); }

.section { padding: 6rem 0; }
.section-tight { padding: 4rem 0; }
.section-loose { padding: 9rem 0; }

@media (max-width: 720px) {
  .section { padding: 4rem 0; }
  .section-loose { padding: 5.5rem 0; }
}

/* ----- Section labels (small caps engineering markers) -------------------- */
.label {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
  font-weight: 500;
}
.label-num {
  display: inline-flex;
  align-items: baseline;
  gap: 0.6em;
}
.label-num::before {
  content: attr(data-num);
  font-feature-settings: 'tnum' on;
  color: var(--ink-faint);
}

/* ----- Header ------------------------------------------------------------- */
.site-head {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule-soft);
}
.site-head-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: var(--col-full);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-family: 'Fraunces', Georgia, serif;
  font-variation-settings: 'opsz' 144, 'SOFT' 30;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.brand-mark {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}
.brand-suffix {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--ink-faint);
  margin-left: 0.5rem;
  text-transform: uppercase;
}

.nav { display: flex; gap: 2rem; align-items: center; }
.nav a {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  position: relative;
  padding: 4px 0;
}
.nav a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 220ms ease-out;
}
.nav a:hover::after, .nav a.is-active::after { transform: scaleX(1); }
.nav a:hover { color: var(--ink); }
.nav a.is-active { color: var(--ink); }

@media (max-width: 720px) {
  .nav { gap: 1rem; }
  .nav a { font-size: 0.6rem; }
  .brand-suffix { display: none; }
}

/* ----- Hero (home) -------------------------------------------------------- */
.hero {
  padding: 8rem 0 5rem;
  position: relative;
}
.hero h1 {
  font-size: var(--display-1);
  line-height: 0.96;
  letter-spacing: -0.035em;
  font-variation-settings: 'opsz' 144, 'SOFT' 100;
  max-width: 14ch;
}
.hero h1 em {
  font-style: italic;
  color: var(--teal);
  font-variation-settings: 'opsz' 144, 'SOFT' 100;
}
.hero-sub {
  margin-top: 2rem;
  font-size: 1.3rem;
  color: var(--ink-soft);
  max-width: 32em;
  line-height: 1.5;
}
.hero-meta {
  display: flex;
  gap: 3rem;
  margin-top: 3.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
  flex-wrap: wrap;
}
.hero-meta div {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.hero-meta .label { color: var(--ink-mute); }
.hero-meta .v { font-family: 'Fraunces', Georgia, serif; font-size: 1.1rem; }

/* ----- Mission card / pull quote ----------------------------------------- */
.mission {
  background: var(--paper-warm);
  color: var(--ink);
  padding: 6rem 0;
  position: relative;
  overflow: hidden;
}
.mission::before {
  content: none;
}
.mission .shell { position: relative; z-index: 1; }
.mission h2 {
  font-size: var(--display-2);
  color: var(--ink);
  font-variation-settings: 'opsz' 144, 'SOFT' 100;
  letter-spacing: -0.025em;
  max-width: 18ch;
}
.mission .label { color: var(--ink-mute); }
.mission p { color: var(--ink-soft); max-width: 40em; }

/* ----- Three-column grid (capabilities, products) ----------------------- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3.5rem 2.5rem;
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem 3rem;
}
@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr; gap: 2.5rem; }
  .grid-2 { grid-template-columns: 1fr; gap: 2.5rem; }
}

.tile h3 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}
.tile p { color: var(--ink-soft); font-size: 0.98rem; }
.tile .label { display: block; margin-bottom: 1rem; }
.tile-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  margin-top: 0.5rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  padding-bottom: 2px;
  transition: gap 180ms ease-out;
}
.tile-link:hover { gap: 0.75em; color: var(--ink); }
.tile-link::after { content: '→'; font-family: inherit; }

/* ----- Article body (lattice, pigeon, token, products) ------------------ */
.article-head {
  padding: 6rem 0 3rem;
}
.article-head .label { display: block; margin-bottom: 1.5rem; }
.article-head h1 {
  font-size: var(--display-2);
  line-height: 1;
  letter-spacing: -0.025em;
  max-width: 18ch;
}
.article-head h1 em { font-style: italic; color: var(--teal); }
.article-head .lead {
  margin-top: 2rem;
  max-width: 38em;
}

.article-body {
  padding: 2rem 0 6rem;
}
.article-body section { padding: 3rem 0; border-top: 1px solid var(--rule-soft); }
.article-body section:first-child { border-top: none; padding-top: 1rem; }

.article-body h2 {
  font-size: var(--headline);
  margin-bottom: 1.5rem;
  letter-spacing: -0.015em;
}
.article-body h3 {
  font-size: 1.3rem;
  margin: 2rem 0 0.75rem;
  letter-spacing: -0.01em;
}
.article-body p, .article-body li {
  font-size: 1.05rem;
  line-height: 1.62;
  color: var(--ink-soft);
  max-width: 36em;
}
.article-body ul {
  padding-left: 1.2em;
  margin: 0 0 1.2em;
}
.article-body li { margin-bottom: 0.5em; }
.article-body strong { color: var(--ink); font-weight: 600; }

/* Two-column layout for article + sidenav */
.article-cols {
  display: grid;
  grid-template-columns: minmax(0, 16rem) minmax(0, 1fr);
  gap: 4rem;
  align-items: start;
}
.article-cols aside {
  position: sticky;
  top: 92px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
}
.article-cols aside ol {
  list-style: none;
  padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: 0.6rem;
}
.article-cols aside a {
  color: var(--ink-mute);
  display: flex;
  gap: 0.8em;
  padding: 0.2em 0;
  border-left: 1px solid var(--rule);
  padding-left: 0.8em;
}
.article-cols aside a:hover { color: var(--ink); border-left-color: var(--ink); }
.article-cols aside .num { color: var(--ink-faint); font-size: 0.65rem; }

@media (max-width: 900px) {
  .article-cols { grid-template-columns: 1fr; gap: 2rem; }
  .article-cols aside { position: static; }
  .article-cols aside ol { flex-direction: row; flex-wrap: wrap; gap: 0.5rem 1rem; }
  .article-cols aside a { border-left: none; padding-left: 0; }
}

/* ----- Spec table (tech specs, tokenomics) ------------------------------ */
.spec {
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--rule);
  margin: 2rem 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
}
.spec-row {
  display: grid;
  grid-template-columns: 1fr 2fr;
  border-bottom: 1px solid var(--rule-soft);
  padding: 0.85rem 0;
  gap: 1.5rem;
  align-items: baseline;
}
.spec-row:last-child { border-bottom: none; }
.spec-row dt { color: var(--ink-mute); text-transform: uppercase; font-size: 0.7rem; letter-spacing: 0.1em; }
.spec-row dd { margin: 0; color: var(--ink); }

/* ----- Pull number / stat ------------------------------------------------ */
.stat {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.stat-num {
  font-family: 'Fraunces', Georgia, serif;
  font-feature-settings: 'tnum' on;
  font-size: clamp(3rem, 6vw, 5rem);
  line-height: 0.92;
  letter-spacing: -0.04em;
  font-variation-settings: 'opsz' 144, 'SOFT' 100;
  color: var(--ink);
}
.stat-num em { font-style: italic; color: var(--teal); }
.stat-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* ----- Buttons / pill links ---------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.5rem;
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  transition: all 180ms ease-out;
}
.btn:hover { background: transparent; color: var(--ink); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
}
.btn-ghost:hover { background: var(--ink); color: var(--paper); }

.btn-row { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 2rem; }

/* ----- Page-specific: home product cards --------------------------------- */
.product-card {
  position: relative;
  padding: 2rem 0;
  border-top: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 6rem 1fr auto;
  gap: 2rem;
  align-items: start;
  transition: padding-left 220ms ease-out;
}
.product-card:hover { padding-left: 1.2rem; }
.product-card:last-child { border-bottom: 1px solid var(--rule); }
.product-card .num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
}
.product-card h3 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}
.product-card p { color: var(--ink-soft); margin: 0.5rem 0 0; max-width: 40em; }
.product-card .arrow {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 2rem;
  color: var(--ink-faint);
  align-self: center;
  transition: transform 220ms ease-out, color 220ms;
}
.product-card:hover .arrow { transform: translateX(0.4rem); color: var(--ink); }

@media (max-width: 720px) {
  .product-card { grid-template-columns: 1fr; gap: 0.5rem; }
  .product-card .arrow { display: none; }
}

/* ----- Pigeon mark / brand gradient ------------------------------------- */
.pigeon-mark {
  display: inline-block;
  vertical-align: middle;
}
.pg-gradient-text {
  background: linear-gradient(135deg, var(--pg-1) 0%, var(--pg-2) 35%, var(--pg-3) 65%, var(--pg-4) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ----- Idea farm (blog list) -------------------------------------------- */
.idea {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: 2rem;
  padding: 2.5rem 0;
  border-top: 1px solid var(--rule-soft);
  align-items: baseline;
}
.idea:last-child { border-bottom: 1px solid var(--rule-soft); }
.idea .meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.idea h3 {
  font-size: 1.6rem;
  letter-spacing: -0.015em;
  line-height: 1.15;
  margin-bottom: 0.6rem;
}
.idea h3 a { color: var(--ink); border-bottom: 1px solid transparent; transition: border-color 180ms; }
.idea h3 a:hover { border-bottom-color: var(--ink); }
.idea p { color: var(--ink-soft); margin: 0; }
.idea .tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 0.8rem;
}
.idea .tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--rule);
  border-radius: 4px;
}
@media (max-width: 720px) {
  .idea { grid-template-columns: 1fr; gap: 0.5rem; }
}

/* ----- Token economics specific ----------------------------------------- */
.principle {
  border-left: 1px solid var(--ink);
  padding: 0.5rem 0 0.5rem 2rem;
  margin: 2.5rem 0;
}
.principle h3 {
  font-size: 1.3rem;
  margin-bottom: 0.6rem;
  letter-spacing: -0.01em;
}
.principle p { color: var(--ink-soft); }

/* ----- Footer ----------------------------------------------------------- */
.site-foot {
  background: var(--night);
  color: var(--cream-mute);
  padding: 5rem 0 2.5rem;
  margin-top: 6rem;
}
.site-foot .shell {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  align-items: start;
}
.site-foot h4 {
  color: var(--cream);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 1.2rem;
  font-weight: 500;
}
.site-foot ul { list-style: none; padding: 0; margin: 0; }
.site-foot li { margin-bottom: 0.55rem; }
.site-foot a {
  color: var(--cream-mute);
  font-size: 0.92rem;
  transition: color 180ms;
}
.site-foot a:hover { color: var(--cream); }
.site-foot .credo {
  font-family: 'Fraunces', Georgia, serif;
  font-style: italic;
  font-size: 1.1rem;
  color: var(--cream);
  font-variation-settings: 'opsz' 144, 'SOFT' 100;
  max-width: 22em;
  line-height: 1.4;
}
.site-foot .legal {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(239, 234, 217, 0.12);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: rgba(239, 234, 217, 0.45);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
@media (max-width: 720px) {
  .site-foot .shell { grid-template-columns: 1fr 1fr; }
  .site-foot .credo { grid-column: 1 / -1; }
}

/* ----- Reveal on scroll (lightweight, JS-driven) ----------------------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 800ms ease-out, transform 800ms ease-out;
  transition-delay: var(--reveal-delay, 0ms);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* ----- Utilities -------------------------------------------------------- */
.muted { color: var(--ink-mute); }
.faint { color: var(--ink-faint); }
.center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 2rem; }
.mt-4 { margin-top: 3rem; }
.mt-5 { margin-top: 4rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 2rem; }
.mb-4 { margin-bottom: 3rem; }
.mb-5 { margin-bottom: 4rem; }

/* ----- Exec Briefs (Ideas page) ----------------------------------------- */
.exec-brief {
  margin-top: 1rem;
  border: 1px solid var(--rule);
  border-radius: 4px;
  overflow: hidden;
}
.exec-brief summary {
  padding: 0.75rem 1rem;
  cursor: pointer;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--teal, #0F6E56);
  background: rgba(15, 110, 86, 0.04);
  user-select: none;
}
.exec-brief summary:hover {
  background: rgba(15, 110, 86, 0.08);
}
.exec-brief[open] summary {
  border-bottom: 1px solid var(--rule);
}
.brief-content {
  padding: 1.25rem 1rem;
  font-size: 0.95rem;
  line-height: 1.7;
}
.brief-content p {
  margin: 0 0 1rem;
}
.brief-content p:last-child {
  margin-bottom: 0;
}

/* ----- Deck Cards (Ideas page) ------------------------------------------ */
.deck-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}
.deck-card {
  display: block;
  padding: 1.5rem;
  border: 1px solid var(--rule);
  border-radius: 6px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.deck-card:hover {
  border-color: var(--teal, #0F6E56);
  box-shadow: 0 2px 12px rgba(15, 110, 86, 0.08);
}
.deck-icon {
  font-size: 1.5rem;
  display: block;
  margin-bottom: 0.75rem;
}
.deck-card h4 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
}
.deck-card p {
  font-size: 0.85rem;
  margin: 0;
}