/* === Tokens === */
:root {
  /* default: slate (slate ink on bone) */
  --paper:       #f3f1ec;
  --paper-2:     #e7e3d9;
  --ink:         #1c2230;
  --ink-2:       #424c5e;
  --ink-3:       #7a8294;
  --line:        #c4c8d2;
  --line-2:      #d9dce3;
  --counter:     #9c8c70;
  --counter-dk:  #6a5e48;
  --tomato:      #c87b1a;     /* saffron accent */
  --tomato-dk:   #9a5e10;
  --cabbage:     #4f7a6a;
  --cabbage-dk:  #355549;
  --onion:       #6a5fa0;
  --plate:       #d9c4a0;
  --star:        #d8a23a;

  --serif: "Source Serif 4", "Source Serif Pro", "Iowan Old Style", Georgia, serif;
  --sans:  "Inter", "Söhne", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --mono:  "JetBrains Mono", "IBM Plex Mono", ui-monospace, "SF Mono", Consolas, monospace;
}

/* PALETTE — forest & ochre */
[data-palette="forest"] {
  --paper:       #f1ede1;
  --paper-2:     #e3dcc7;
  --ink:         #1f2a1f;
  --ink-2:       #3f4d3f;
  --ink-3:       #6e7864;
  --line:        #c1bea2;
  --line-2:      #d6d3b8;
  --counter:     #957f48;
  --counter-dk:  #6c5b30;
  --tomato:      #b88611;     /* mustard */
  --tomato-dk:   #8b6308;
  --cabbage:     #3a5c3a;
  --cabbage-dk:  #243f24;
  --onion:       #5a4a8a;
  --plate:       #d9c79a;
  --star:        #c9941d;
}

/* PALETTE — plum & sage */
[data-palette="plum"] {
  --paper:       #f4f5f8;
  --paper-2:     #e6e7ed;
  --ink:         #1f2438;
  --ink-2:       #3a4060;
  --ink-3:       #71768f;
  --line:        #c4c8d4;
  --line-2:      #d6d9e1;
  --counter:     #8a8fa6;
  --counter-dk:  #5d6280;
  --tomato:      #5b4b8a;
  --tomato-dk:   #3f3568;
  --cabbage:     #5a7e6a;
  --cabbage-dk:  #3e5e4a;
  --onion:       #4a4374;
  --plate:       #c8ccdb;
  --star:        #b48a3e;
}

/* PALETTE — paper-ink (monochrome) */
[data-palette="paper"] {
  --paper:       #f6f4ee;
  --paper-2:     #eae6d8;
  --ink:         #181612;
  --ink-2:       #3c382f;
  --ink-3:       #7a7466;
  --line:        #c4bea8;
  --line-2:      #d8d2bc;
  --counter:     #9a907a;
  --counter-dk:  #6c604a;
  --tomato:      #181612;
  --tomato-dk:   #181612;
  --cabbage:     #181612;
  --cabbage-dk:  #181612;
  --onion:       #181612;
  --plate:       #d2c8a4;
  --star:        #c89a3a;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; }

#root {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 32px 0;
}

/* === Site nav (tiny) === */
.site-top {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 0 0;
  font-size: 13px;
  letter-spacing: 0.02em;
}
.site-top .brand {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 500;
  font-size: 16px;
  color: var(--ink-2);
}
.site-top nav {
  display: flex; gap: 22px; color: var(--ink-3);
}
.site-top nav a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: color .15s, border-color .15s;
}
.site-top nav a:hover { color: var(--ink); border-color: var(--ink); }

/* === Hero === */
.hero {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 48px;
  padding: 36px 0 36px;
  align-items: center;
  border-bottom: 1px solid var(--line);
}
.hero-meta {
  display: flex; align-items: center; gap: 12px;
  font-size: 12.5px; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 28px;
}
.hero-meta-sep { color: var(--line); }
.badge {
  display: inline-flex; align-items: center;
  background: var(--ink); color: var(--paper);
  padding: 5px 10px;
  border-radius: 999px;
  font-weight: 600; letter-spacing: 0.08em;
  font-size: 11px;
}
.hero-title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(40px, 5.4vw, 76px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 0 0 28px;
  text-wrap: balance;
}
.hero-sub-title {
  display: block;
  font-style: italic;
  color: var(--ink-2);
  font-size: 0.62em;
  font-weight: 400;
  margin-top: 14px;
  letter-spacing: -0.005em;
  line-height: 1.18;
}
.hero-tinted { color: var(--tomato-dk); }
.hl-plum { color: var(--tomato-dk); }

.hl {
  position: relative;
  display: inline-block;
  font-style: italic;
  color: var(--tomato-dk);
}
.hl-red, .hl-green { /* legacy names — flatten to inline italic accent */ }

.hero-authors, .hero-affil {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap;
}
.hero-authors {
  gap: 22px;
  font-size: 17px;
  font-weight: 500;
  margin-bottom: 6px;
  flex-wrap: nowrap;
  white-space: nowrap;
}
.hero-authors li { display: inline-flex; align-items: baseline; gap: 2px; }
.hero-authors sup { font-size: 11px; color: var(--ink-3); margin-left: 1px; font-weight: 500; }
.hero-affil {
  gap: 18px;
  font-size: 13.5px; color: var(--ink-3);
  margin-bottom: 32px;
}
.hero-affil sup { color: var(--ink-3); margin-right: 3px; }

.hero-cta { display: flex; gap: 10px; flex-wrap: wrap; }
.cta {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px;
  border-radius: 999px;
  font-weight: 500;
  font-size: 14.5px;
  text-decoration: none;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  transition: transform .12s, background .12s, border-color .12s, box-shadow .12s;
}
.cta:hover { background: var(--paper-2); transform: translateY(-1px); }
.cta-primary {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.cta-primary:hover { background: #2c2218; border-color: #2c2218; }
.cta-ghost { background: transparent; }

/* === Kitchen teaser === */
.hero-side {
  position: relative;
  padding: 8px;
}
.kt-wrap {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
  box-shadow: 0 2px 0 var(--line-2), 0 24px 60px -32px rgba(60,40,10,0.30);
}
.kt-stage {
  position: relative;
  background: var(--paper);
  border-radius: 8px;
  padding: 14px;
  border: 1px solid var(--line-2);
}
.kt-svg { display: block; width: 100%; height: auto; }
.kt-gif {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 6px;
  image-rendering: pixelated;
  image-rendering: -moz-crisp-edges;
  image-rendering: crisp-edges;
}
.kt-stamp {
  position: absolute;
  right: 22px; top: 22px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  background: rgba(250, 245, 233, 0.85);
  border: 1px solid var(--line);
  padding: 4px 8px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}
.kt-caption {
  position: absolute;
  left: 22px; bottom: 22px;
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(31, 24, 16, 0.92);
  color: var(--paper);
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.01em;
}
.kt-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--star);
  box-shadow: 0 0 0 3px rgba(240, 180, 41, 0.25);
}
.kt-controls {
  display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px;
}
.kt-pill {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 13px;
  font: inherit;
  font-size: 12.5px;
  cursor: pointer;
  color: var(--ink-2);
  transition: background .12s, color .12s, border-color .12s;
}
.kt-pill:hover { background: var(--paper-2); color: var(--ink); }
.kt-pill.is-active {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.kt-pause { margin-left: auto; font-variant-numeric: tabular-nums; }

/* === Abstract === */
.abstract {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 56px;
  padding: 36px 0;
  border-bottom: 1px solid var(--line);
}
.abstract-label {
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  color: var(--ink-3);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.abstract-body {
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.45;
  color: var(--ink);
  letter-spacing: -0.005em;
  margin: 0 0 1.1em;
  text-wrap: pretty;
}
.abstract-body:last-child { margin-bottom: 0; }
.abstract-body-wrap { max-width: 64ch; }
.abstract-body em { font-style: italic; color: var(--tomato-dk); font-weight: 500; }

/* === Studies === */
.study { padding: 44px 0 44px; border-bottom: 1px solid var(--line); }
.study-alt {
  background: linear-gradient(to bottom, transparent, var(--paper-2) 30%, var(--paper-2) 70%, transparent);
  position: relative;
  border-bottom: none;
}
.study-alt::before {
  content: "";
  position: absolute;
  inset: 0;
  left: 50%;
  margin-left: -50vw;
  width: 100vw;
  background: inherit;
  z-index: -1;
}
.study-head { max-width: 760px; margin-bottom: 28px; }
.study-num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--tomato-dk);
  margin-bottom: 14px;
  font-weight: 600;
}
.study-title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(32px, 3.6vw, 48px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
  text-wrap: balance;
}
.study-lede {
  font-size: 19px;
  color: var(--ink-2);
  line-height: 1.5;
  margin: 0;
  text-wrap: pretty;
}
.study-lede em { color: var(--tomato-dk); font-style: italic; }

/* trial strip */
.trial-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 56px;
}
.trial-strip figure { margin: 0; }
.trial-strip img {
  width: 100%; aspect-ratio: 1/1; object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--paper);
  display: block;
}
.trial-strip figcaption {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-3);
  margin-top: 8px;
  letter-spacing: 0.02em;
}

/* gif strip */
.gif-strip {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 56px;
}
.gif-strip figure { margin: 0; }
.gif-strip img {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--paper);
  display: block;
}
.gif-strip figcaption {
  font-family: var(--serif);
  font-style: italic;
  font-size: 14.5px;
  color: var(--ink-3);
  margin-top: 10px;
  text-align: center;
}

/* condition cards */
.cond-grid {
  display: grid; gap: 18px;
}
.cond-grid-4 { grid-template-columns: repeat(4, 1fr); }
.cond-grid-2 { grid-template-columns: 1fr 1fr; gap: 24px; max-width: 880px; margin-left: auto; margin-right: auto; }

.cond {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px 22px 18px;
  display: flex; flex-direction: column;
  transition: transform .15s, border-color .15s, box-shadow .15s;
}
.cond:hover {
  transform: translateY(-2px);
  border-color: var(--counter-dk);
  box-shadow: 0 18px 40px -24px rgba(60,40,10,0.35);
}
.cond::before {
  content: "";
  position: absolute; left: 22px; top: 0;
  width: 36px; height: 4px;
  background: var(--counter);
  border-radius: 0 0 4px 4px;
}
.cond-tomato::before  { background: var(--tomato); }
.cond-cabbage::before { background: var(--cabbage); }
.cond-onion::before   { background: var(--onion); }
.cond-plate::before   { background: var(--star); }

.cond-head { margin-bottom: 12px; }
.cond-num {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.cond h3 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 24px;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 6px 0 0;
}
.cond-q {
  font-family: var(--serif);
  font-style: italic;
  font-size: 16px;
  color: var(--tomato-dk);
  margin: 0 0 10px;
  line-height: 1.35;
}
.cond-desc {
  font-size: 14.5px;
  color: var(--ink-2);
  line-height: 1.5;
  margin: 0 0 18px;
  flex: 1;
  text-wrap: pretty;
}
.cond-link {
  display: inline-flex; align-items: center; gap: 8px;
  align-self: flex-start;
  text-decoration: none;
  font-weight: 500;
  font-size: 14px;
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  padding-bottom: 2px;
  transition: gap .15s, color .15s;
}
.cond-link:hover { gap: 12px; color: var(--tomato-dk); border-color: var(--tomato-dk); }

.cond-large { padding: 28px 28px 24px; }
.cond-large h3 { font-size: 28px; margin-top: 8px; }
.cond-large .cond-desc { font-size: 16px; }

/* === Resources === */
.resources { padding: 32px 0 32px; border-bottom: 1px solid var(--line); }
.resources-head { max-width: 760px; margin-bottom: 24px; }
.resources-head h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(30px, 3.4vw, 44px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0;
}

.bibtex {
  background: var(--paper-2);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px 22px 18px;
  position: relative;
}
.bibtex-copy {
  position: absolute;
  right: 14px;
  bottom: 14px;
  background: var(--paper);
  color: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 11px;
  font: inherit;
  font-size: 12px;
  cursor: pointer;
  transition: background .12s, border-color .12s, color .12s;
}
.bibtex-copy:hover { background: var(--paper); border-color: var(--ink-3); }
.bibtex pre {
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.55;
  margin: 0;
  padding-bottom: 14px;
  white-space: pre-wrap;
  color: var(--ink-2);
}

/* === Footer === */
.site-foot { padding: 18px 0 24px; }
.foot-bottom {
  display: flex; justify-content: space-between;
  font-size: 12.5px; color: var(--ink-3);
  font-family: var(--serif);
  font-style: italic;
}

/* === Responsive === */
@media (max-width: 980px) {
  #root { padding: 0 22px; }
  .hero { grid-template-columns: 1fr; gap: 28px; padding: 24px 0 32px; }
  .abstract { grid-template-columns: 1fr; gap: 14px; padding: 36px 0; }
  .study, .resources { padding: 40px 0; }
  .study-alt { padding: 40px 0; }
  .trial-strip { grid-template-columns: repeat(2, 1fr); }
  .cond-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .cond-grid-2 { grid-template-columns: 1fr; }
  .gif-strip { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .trial-strip { grid-template-columns: 1fr 1fr; }
  .cond-grid-4 { grid-template-columns: 1fr; }
  .hero-title { font-size: 44px; }
}