:root {
  --bg: #17130f;
  --paper: #1e1a15;
  --paper-hover: #26211a;
  --border: rgba(240, 230, 210, 0.14);
  --border-strong: rgba(240, 230, 210, 0.28);
  --text-main: #f2ead9;
  --text-muted: #b7ab96;
  --text-dim: #8a7e6c;
  --masc: #7c8fe6;
  --masc-strong: #a6b3ee;
  --fem: #e87ba0;
  --fem-strong: #f0a3bf;
  --thread-width: 3px;
  --card-radius: 14px;
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --font-serif: "Charter", "Bitstream Charter", "Sitka Text", "Cambria", Georgia, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-label: ui-monospace, "SF Mono", "Menlo", "Consolas", monospace;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f2e7;
    --paper: #fffdf8;
    --paper-hover: #f1ead9;
    --border: rgba(40, 30, 15, 0.14);
    --border-strong: rgba(40, 30, 15, 0.28);
    --text-main: #211c14;
    --text-muted: #5c5240;
    --text-dim: #8a7e6c;
    --masc: #33459c;
    --masc-strong: #1f2f80;
    --fem: #a52458;
    --fem-strong: #85173f;
  }
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

a { color: inherit; }

.site-header {
  border-bottom: 1px solid var(--border);
  padding: 1.25rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1080px;
  width: 100%;
  margin: 0 auto;
}

.site-header .brand {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-main);
  text-decoration: none;
}

.site-header .brand:hover { color: var(--fem); }

.lang-switch {
  display: flex;
  gap: 0.25rem;
  background: var(--paper);
  border: 1px solid var(--border);
  padding: 0.25rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 500;
}

.lang-switch a {
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  text-decoration: none;
  color: var(--text-muted);
  transition: var(--transition);
}

.lang-switch a.active {
  background: linear-gradient(135deg, var(--masc), var(--fem));
  color: #fff;
  font-weight: 600;
}

main {
  flex: 1;
  max-width: 860px;
  width: 100%;
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
}

.lead-kicker {
  font-family: var(--font-label);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 0.9rem;
}

h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.1rem, 5.5vw, 3.1rem);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin-bottom: 1.2rem;
}

.deck {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 62ch;
  margin-bottom: 2.4rem;
}

h2 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  margin: 2.6rem 0 1rem;
}

h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0 0 0.75rem;
}

.prose p { margin-bottom: 1.1rem; max-width: 68ch; }
.prose p:last-child { margin-bottom: 0; }
.prose strong { color: var(--text-main); }
.prose em { font-style: italic; color: var(--text-main); }

/* ---- Stat hero: the label pinned to the garment ---- */

.stat-hero {
  border: 1px dashed var(--border-strong);
  border-radius: var(--card-radius);
  padding: 1.8rem;
  margin-bottom: 2.5rem;
  background: var(--paper);
  position: relative;
}

.stat-hero::before {
  content: "";
  position: absolute;
  top: -1px; left: 1.6rem;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--bg);
  border: 1px dashed var(--border-strong);
  transform: translateY(-50%);
}

.stat-hero-row {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
}

.stat-hero-num {
  font-family: var(--font-serif);
  font-size: clamp(2.6rem, 8vw, 3.8rem);
  font-weight: 700;
  background: linear-gradient(120deg, var(--masc-strong), var(--fem-strong));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
}

.stat-hero-sub {
  font-size: 0.98rem;
  color: var(--text-muted);
  max-width: 34ch;
}

.stat-hero-legend {
  display: flex;
  gap: 1.4rem;
  margin-top: 1.2rem;
  font-family: var(--font-label);
  font-size: 0.78rem;
  color: var(--text-dim);
  flex-wrap: wrap;
}

.stat-hero-legend span { display: flex; align-items: center; gap: 0.4rem; }
.swatch { width: 10px; height: 10px; border-radius: 2px; display: inline-block; }
.swatch.m { background: var(--masc); }
.swatch.f { background: var(--fem); }
.swatch.n { background: linear-gradient(135deg, var(--masc) 50%, var(--fem) 50%); }

/* ---- The two-clothes demo ---- */

.demo-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1.6rem 0 2rem;
}

@media (max-width: 560px) {
  .demo-pair { grid-template-columns: 1fr; }
}

.demo-card {
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  padding: 1.1rem 1.2rem;
  background: var(--paper);
}

.demo-card .demo-label {
  font-family: var(--font-label);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 0.6rem;
}

.demo-line { font-size: 1.05rem; margin-bottom: 0.35rem; }
.demo-line .tag-m { color: var(--masc-strong); font-weight: 600; }
.demo-line .tag-f { color: var(--fem-strong); font-weight: 600; }

/* ---- The sorting instrument ---- */

.sorter {
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  background: var(--paper);
  padding: 1.5rem;
  margin: 1.6rem 0 2.5rem;
}

.sorter-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1.1rem;
  flex-wrap: wrap;
}

.sorter-title {
  font-family: var(--font-label);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.sorter-tally {
  display: flex;
  gap: 0.9rem;
  font-family: var(--font-label);
  font-size: 0.82rem;
}

.sorter-tally b { color: var(--text-main); }

.chip-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.3rem;
}

.chip {
  font-family: var(--font-label);
  font-size: 0.84rem;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  border: 1px dashed var(--border-strong);
  background: var(--bg);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
  line-height: 1.2;
}

.chip:hover { border-color: var(--text-dim); color: var(--text-main); }

.chip.active {
  color: var(--text-main);
  border-style: solid;
  background: var(--paper-hover);
}

.chip.active.gender-m { border-color: var(--masc); box-shadow: inset 0 -2px 0 var(--masc); }
.chip.active.gender-f { border-color: var(--fem); box-shadow: inset 0 -2px 0 var(--fem); }
.chip.active.gender-n {
  border-color: var(--border-strong);
  box-shadow: inset 0 -2px 0 var(--masc), inset 2px 0 0 var(--fem);
}

.chip.seen { opacity: 0.55; }

.label-stage {
  border-top: 1px dashed var(--border-strong);
  padding-top: 1.3rem;
  min-height: 9.5rem;
}

.label-empty { color: var(--text-dim); font-size: 0.95rem; }

.label-word {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.label-gender-name {
  font-family: var(--font-label);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.label-gender-name.gender-m { color: var(--masc-strong); }
.label-gender-name.gender-f { color: var(--fem-strong); }
.label-gender-name.gender-n { color: var(--text-muted); }

.morph-toggle {
  display: inline-flex;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 0.2rem;
  margin-bottom: 1.1rem;
  font-family: var(--font-label);
  font-size: 0.78rem;
}

.morph-toggle button {
  border: none;
  background: none;
  color: var(--text-muted);
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
  transition: var(--transition);
}

.morph-toggle button.active {
  background: var(--paper-hover);
  color: var(--text-main);
  font-weight: 600;
}

.morph-sentence {
  font-size: 1.55rem;
  line-height: 1.5;
}

.morph-sentence .m-part {
  color: var(--masc-strong);
  transition: var(--transition);
  display: inline-block;
}

.morph-sentence .f-part {
  color: var(--fem-strong);
  transition: var(--transition);
  display: inline-block;
}

.morph-sentence.flip .m-part,
.morph-sentence.flip .f-part {
  animation: morph-pop 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes morph-pop {
  0% { transform: translateY(0.35em) scale(0.85); opacity: 0.2; }
  100% { transform: translateY(0) scale(1); opacity: 1; }
}

.morph-hint { font-size: 0.85rem; color: var(--text-dim); margin-top: 0.9rem; }

.chip.persons { border-color: var(--border); }

/* ---- Method note ---- */

.method-note {
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  padding-top: 1.6rem;
}

.method-note p { font-size: 0.92rem; color: var(--text-muted); margin-bottom: 0.9rem; max-width: 68ch; }

.btt-button {
  font-family: var(--font-label);
  font-size: 0.8rem;
  color: var(--text-muted);
  background: var(--paper);
  border: 1px solid var(--border);
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  cursor: pointer;
  transition: var(--transition);
}

.btt-button:hover { color: var(--text-main); border-color: var(--border-strong); }

footer {
  border-top: 1px solid var(--border);
  padding: 1.6rem 1.5rem;
  max-width: 1080px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  gap: 0.5rem 1.5rem;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--text-dim);
}

footer a { color: var(--text-muted); text-decoration: none; }
footer a:hover { color: var(--text-main); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .morph-sentence.flip .m-part,
  .morph-sentence.flip .f-part { animation: none; }
  * { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}