* {
  box-sizing: border-box;
}
html,
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
}
body {
  padding: 3rem 1.5rem 6rem;
  display: flex;
  justify-content: center;
}
main {
  width: 100%;
  max-width: 880px;
}

nav.top {
  display: flex;
  align-items: baseline;
  gap: 1.4rem;
  margin-bottom: 2.6rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--bg-raised);
  font-family: var(--mono);
  font-size: 0.82rem;
}
nav.top a {
  color: var(--washi-dim);
  text-decoration: none;
  letter-spacing: 0.02em;
}
nav.top a:hover,
nav.top a:focus-visible {
  color: var(--washi-bright);
}
nav.top a.current {
  color: var(--fg);
  border-bottom: 1px solid var(--fg);
  padding-bottom: 0.9rem;
}
nav.top .sep {
  color: var(--nezumi);
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-hero);
  margin: 0 0 0.9rem;
}
h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2rem, 5vw, 2.9rem);
  letter-spacing: 0.01em;
  margin: 0 0 0.6rem;
  color: var(--washi-bright);
  text-wrap: balance;
}
.lede {
  font-size: 1.02rem;
  line-height: 1.65;
  color: var(--washi);
  max-width: 62ch;
  margin: 0 0 3rem;
}
.lede em {
  color: var(--fg);
  font-style: normal;
}

h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.4rem;
  color: var(--washi-bright);
  margin: 0 0 0.3rem;
  letter-spacing: 0.01em;
}
.section-note {
  font-size: 0.88rem;
  color: var(--washi-dim);
  margin: 0 0 1.4rem;
  line-height: 1.55;
  max-width: 58ch;
}
section {
  margin-bottom: 3.4rem;
}
section:last-of-type {
  margin-bottom: 0;
}

/* reference strip (index page only) */
.refs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.9rem;
  margin-bottom: 3rem;
}
.ref-card {
  border: 1px solid var(--bg-raised);
  background: var(--bg-raised);
  overflow: hidden;
}
.ref-card img {
  display: block;
  width: 100%;
  height: 108px;
  object-fit: cover;
  filter: saturate(0.94);
}
.ref-cap {
  padding: 0.55rem 0.7rem 0.7rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--washi-dim);
}
.ref-cap b {
  color: var(--washi);
  font-weight: 500;
}

/* theme cards (index page only) */
.theme-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}
.theme-card {
  display: block;
  text-decoration: none;
  border: 1px solid var(--bg-raised);
  background: var(--bg-raised);
  padding: 1.1rem 1.2rem 1.3rem;
  transition: border-color 0.15s ease;
}
.theme-card:hover,
.theme-card:focus-visible {
  border-color: var(--nezumi);
}
.theme-card .swatch-row {
  display: flex;
  height: 28px;
  margin-bottom: 0.9rem;
}
.theme-card .swatch-row > span {
  flex: 1;
}
.theme-card h3 {
  font-family: var(--serif);
  font-size: 1.25rem;
  color: var(--washi-bright);
  margin: 0 0 0.4rem;
}
.theme-card p {
  font-size: 0.85rem;
  color: var(--washi-dim);
  line-height: 1.5;
  margin: 0;
}

table.compare {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.82rem;
}
table.compare th,
table.compare td {
  text-align: left;
  padding: 0.5rem 0.8rem 0.5rem 0;
  border-bottom: 1px solid var(--bg-raised);
}
table.compare th {
  color: var(--washi-dim);
  font-weight: 500;
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
table.compare td {
  font-family: var(--mono);
  color: var(--fg);
}
table.compare td.swatch-cell {
  font-family: var(--mono);
}
table.compare .chip-inline {
  display: inline-block;
  width: 0.85em;
  height: 0.85em;
  margin-right: 0.5em;
  vertical-align: -0.05em;
  border: 1px solid rgba(255, 255, 255, 0.15);
}
.wide-table-wrap {
  overflow-x: auto;
}

/* swatch grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 0.85rem;
}
.swatch {
  border: 1px solid rgba(255, 255, 255, 0.06);
}
.chip {
  height: 64px;
  width: 100%;
}
.swatch-meta {
  padding: 0.6rem 0.7rem 0.75rem;
  background: var(--bg-raised);
}
.swatch-name {
  font-family: var(--serif);
  font-size: 0.98rem;
  color: var(--washi-bright);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
}
.swatch-name .role {
  font-family: var(--mono);
  font-size: 0.64rem;
  color: var(--nezumi);
  letter-spacing: 0.03em;
}
.swatch-hex {
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--washi-dim);
  margin-top: 0.15rem;
  font-variant-numeric: tabular-nums;
}

.pair-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.85rem;
}
.pair {
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: var(--bg-raised);
}
.pair-chips {
  display: flex;
}
.pair-chips > div {
  flex: 1;
  height: 56px;
}
.pair-meta {
  padding: 0.6rem 0.7rem 0.75rem;
}
.pair-name {
  font-family: var(--serif);
  font-size: 1.02rem;
  color: var(--washi-bright);
}
.pair-source {
  font-size: 0.8rem;
  color: var(--washi-dim);
  margin-top: 0.2rem;
  line-height: 1.4;
}
.pair-hex {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--nezumi);
  margin-top: 0.35rem;
  display: flex;
  justify-content: space-between;
}

.term {
  background: var(--bg-raised);
  border: 1px solid rgba(255, 255, 255, 0.06);
  font-family: var(--mono);
  font-size: 0.86rem;
  line-height: 1.7;
  padding: 1.1rem 1.3rem;
  overflow-x: auto;
  white-space: pre;
  font-feature-settings:
    "liga" 1,
    "calt" 1;
}
.term .comment {
  color: var(--nezumi);
}
.term .kw {
  color: var(--accent-hero);
}
.term .str {
  color: var(--accent-green-b);
}
.term .fn {
  color: var(--accent-gold-b);
}
.term .num {
  color: var(--accent-pink-b);
}
.term .err {
  color: var(--accent-red-b);
}
.term .cursor-blk {
  background: var(--accent-hero);
  color: var(--sumi);
}

footer {
  margin-top: 4rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--bg-raised);
  font-size: 0.82rem;
  color: var(--washi-dim);
  line-height: 1.6;
}
footer code {
  font-family: var(--mono);
  color: var(--washi);
}
footer a {
  color: var(--washi);
}

@media (max-width: 600px) {
  .refs {
    grid-template-columns: 1fr;
  }
  body {
    padding: 2.4rem 1.1rem 4rem;
  }
}

/* ground grid holds 8 swatches, so only 2 or 4 columns divide evenly —
   pin it at 2 through the width where auto-fit would otherwise land on 3 */
@media (min-width: 600px) and (max-width: 735px) {
  .grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 736px) {
  .grid {
    grid-template-columns: repeat(4, 1fr);
  }
}