/* ═══════════════════════════════════════════════════════
   CÂT E UN PAS — Dust, road, stride
   ═══════════════════════════════════════════════════════ */

/* ── Fonts ──────────────────────────────────────────── */
@font-face {
  font-family: 'Cormorant';
  src: url('/cat-e-un-pas/assets/fonts/Cormorant.woff2') format('woff2');
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}

/* ── Tokens: light ──────────────────────────────────── */
:root {
  --paper:    #f3ede1;
  --surface:  #e7ddc9;
  --surface-2:#d9cdb4;
  --stone:    #c4b59a;

  --ink:      #1c1712;
  --ink-2:    #3d352a;
  --ink-3:    #5f5546;
  --ink-4:    #827768;

  --accent:   #8a4a12;
  --accent-bg:#f2e2c8;

  --road:     #6b4a1f;
  --road-bg:  #ece0c8;

  --kept:     #1b5e3e;
  --kept-bg:  #d8e8de;
  --lost:     #8b1a1a;
  --lost-bg:  #f0d4d4;
  --shifted:  #4a3b8c;
  --shifted-bg:#e4dff5;

  --focus:    #4a7a9c;
  --border:   rgba(28,23,18,.12);

  --bar-h:    2.75rem;
  --measure:  38rem;
  --gap:      clamp(1.5rem, 3vw, 3rem);

  --font-display: 'Cormorant', 'Georgia', 'Times New Roman', serif;
  --font-body:    'Georgia', 'Times New Roman', serif;
  --font-mono:    'SFMono-Regular', 'Consolas', monospace;
}

/* ── Tokens: dark ───────────────────────────────────── */
[data-theme="dark"] {
  --paper:    #100d09;
  --surface:  #1b1610;
  --surface-2:#272016;
  --stone:    #3d3427;

  --ink:      #efe7d7;
  --ink-2:    #d2c9b6;
  --ink-3:    #b2a897;
  --ink-4:    #928a77;

  --accent:   #d99a5b;
  --accent-bg:#2a1e10;

  --road:     #d9b97e;
  --road-bg:  #241b10;

  --kept:     #7cc8a0;
  --kept-bg:  #162a20;
  --lost:     #e89090;
  --lost-bg:  #2a1616;
  --shifted:  #b8a8e8;
  --shifted-bg:#1e1a30;

  --focus:    #6aadcc;
  --border:   rgba(239,231,215,.1);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper:    #100d09;
    --surface:  #1b1610;
    --surface-2:#272016;
    --stone:    #3d3427;
    --ink:      #efe7d7;
    --ink-2:    #d2c9b6;
    --ink-3:    #b2a897;
    --ink-4:    #928a77;
    --accent:   #d99a5b;
    --accent-bg:#2a1e10;
    --road:     #d9b97e;
    --road-bg:  #241b10;
    --kept:     #7cc8a0;
    --kept-bg:  #162a20;
    --lost:     #e89090;
    --lost-bg:  #2a1616;
    --shifted:  #b8a8e8;
    --shifted-bg:#1e1a30;
    --focus:    #6aadcc;
    --border:   rgba(239,231,215,.1);
  }
}

/* ── Reset ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: clamp(1.05rem, 1rem + .22vw, 1.17rem);
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: .15em; }
a:hover { text-decoration-thickness: 2px; }
img { max-width: 100%; height: auto; display: block; }

/* ── Focus ──────────────────────────────────────────── */
:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 3px;
}

/* ── Layout ─────────────────────────────────────────── */
.wrap { max-width: var(--measure); margin: 0 auto; padding: 0 clamp(1rem, 3vw, 2rem); }
.wide { max-width: 56rem; margin: 0 auto; padding: 0 clamp(1rem, 3vw, 2rem); }

/* ── Topbar ─────────────────────────────────────────── */
.topbar {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; gap: .5rem;
  height: var(--bar-h);
  padding: 0 clamp(.75rem, 2vw, 1.25rem);
  background: var(--paper);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-display);
  font-size: .85rem;
  letter-spacing: .02em;
}
.topbar .home { color: var(--ink-3); text-decoration: none; white-space: nowrap; }
.topbar .home:hover { color: var(--ink); }
.topnav { display: flex; gap: .15rem; overflow-x: auto; scrollbar-width: none; }
.topnav::-webkit-scrollbar { display: none; }
.topnav a {
  color: var(--ink-3); text-decoration: none; white-space: nowrap;
  padding: .25rem .5rem; border-radius: 4px;
}
.topnav a:hover { color: var(--ink); background: var(--surface); }
.topnav a[aria-current="true"] { color: var(--ink); font-weight: 600; }
.spacer { flex: 1; }
.chip {
  color: var(--ink-3); text-decoration: none; white-space: nowrap;
  padding: .2rem .6rem; border-radius: 4px;
  font-size: .8rem;
}
.chip:hover { color: var(--ink); background: var(--surface); }
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 2rem; height: 2rem; border-radius: 50%;
  border: none; background: none; color: var(--ink-3);
  cursor: pointer; padding: 0;
}
.icon-btn:hover { color: var(--ink); background: var(--surface); }
.icon-btn svg { display: block; }
.icon-btn svg[hidden] { display: none; }

/* ── Sections ───────────────────────────────────────── */
section { scroll-margin-top: calc(var(--bar-h) + 1rem); }
.block { padding: var(--gap) 0; }
.block + .block { border-top: 1px solid var(--border); }

/* ── Typography ─────────────────────────────────────── */
h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 1.5rem + 4vw, 4.6rem);
  line-height: 1.04;
  font-weight: 400;
  letter-spacing: -.01em;
  color: var(--ink);
}
h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 1.2rem + 1.5vw, 2.2rem);
  line-height: 1.15;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: 1rem;
}
h2 .anchor { color: inherit; text-decoration: none; }
h2 .anchor:hover { text-decoration: underline; text-decoration-thickness: 1px; }
.kicker {
  font-family: var(--font-display);
  font-size: .95rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: .5rem;
}
.deck {
  font-size: clamp(1.08rem, 1rem + .35vw, 1.28rem);
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 34rem;
}
.lede {
  font-size: 1.08rem;
  color: var(--ink-2);
  margin-bottom: 1.5rem;
}
.prose { max-width: var(--measure); }
.prose p + p { margin-top: 1em; }
.prose.gap-top { margin-top: 1.5rem; }

/* ── Hero ───────────────────────────────────────────── */
.hero {
  padding: clamp(3rem, 8vw, 7rem) 0 clamp(2rem, 5vw, 4rem);
  text-align: center;
}
.hero-text { margin-bottom: clamp(2rem, 4vw, 3.5rem); }
.hero .deck { margin: 1rem auto 0; }
.hero-answer {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 1.1rem + 1.4vw, 2rem);
  color: var(--accent);
  margin-top: 1.25rem;
}

/* ── Stride diagram ─────────────────────────────────── */
.stride {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: clamp(1rem, 3vw, 2rem);
  margin: 1.5rem 0;
}
.stride svg { width: 100%; height: auto; display: block; }
.stride figcaption {
  font-size: .85rem;
  color: var(--ink-3);
  margin-top: .75rem;
  line-height: 1.5;
}

/* ── Calculator ─────────────────────────────────────── */
.calc {
  background: var(--road-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: clamp(1.25rem, 3vw, 2rem);
  margin: 1.5rem 0;
}
.calc h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 400;
  margin-bottom: .25rem;
}
.calc .hint { font-size: .92rem; color: var(--ink-3); margin-bottom: 1rem; }
.calc label { display: block; font-size: 1rem; margin-bottom: .35rem; }
.calc output { font-weight: 700; color: var(--accent); }
.calc input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
  min-height: 2.75rem;
}
.calc-result {
  font-size: clamp(1.05rem, 1rem + .4vw, 1.25rem);
  margin-top: .75rem;
  padding-top: .75rem;
  border-top: 1px solid var(--border);
}
.calc-result strong { color: var(--accent); }
.calc-bars { margin-top: 1rem; display: grid; gap: .5rem; }
.calc-bar { display: grid; grid-template-columns: 7.5rem 1fr; gap: .5rem; align-items: center; font-size: .85rem; color: var(--ink-3); }
.calc-bar .track { height: .9rem; background: var(--surface-2); border-radius: 4px; overflow: hidden; }
.calc-bar .fill { height: 100%; background: var(--stone); border-radius: 4px; }
.calc-bar.you .fill { background: var(--accent); }
.calc-bar .w-25 { width: 25%; } .calc-bar .w-30 { width: 30%; }
.calc-bar .w-35 { width: 35%; } .calc-bar .w-40 { width: 40%; }
.calc-bar .w-45 { width: 45%; } .calc-bar .w-50 { width: 50%; }
.calc-bar .w-55 { width: 55%; } .calc-bar .w-60 { width: 60%; }
.calc-bar .w-65 { width: 65%; } .calc-bar .w-70 { width: 70%; }
.calc-bar .w-75 { width: 75%; } .calc-bar .w-100 { width: 100%; }
@media (max-width: 26rem) {
  .calc-bar { grid-template-columns: 1fr; gap: .15rem; }
}

/* ── Milestone slab ─────────────────────────────────── */
.slab {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  margin: 1.5rem auto 0;
  max-width: 56rem;
}
.inscription-box {
  padding: clamp(1.5rem, 4vw, 3rem);
  text-align: center;
}
.inscription {
  font-family: var(--font-display);
  font-size: clamp(.85rem, .7rem + .7vw, 1.1rem);
  line-height: 2.1;
  letter-spacing: .1em;
  color: var(--ink-3);
  text-transform: uppercase;
  font-weight: 600;
}
.inscription .last-line {
  display: block;
  color: var(--accent);
  font-size: clamp(1.1rem, .95rem + .9vw, 1.5rem);
  margin-top: .5rem;
}
.slab-cap {
  padding: 1rem clamp(1rem, 3vw, 2rem);
  font-size: .88rem;
  color: var(--ink-3);
  border-top: 1px solid var(--border);
}

/* ── Word cards ─────────────────────────────────────── */
.cards {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
}
.card {
  padding: 1.25rem 1.5rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--paper);
}
.card .from {
  font-family: var(--font-display);
  font-size: 1.3rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  font-weight: 600;
}
.card .arrow { color: var(--ink-4); margin: 0 .5rem; }
.card .to { font-size: 1.15rem; font-style: italic; }
.card .verdict {
  display: flex;
  align-items: center;
  gap: .4rem;
  margin: .5rem 0;
  font-size: .88rem;
  font-weight: 600;
}
.card .dot {
  width: 8px; height: 8px; border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}
.card.v-kept .dot { background: var(--kept); }
.card.v-kept .verdict { color: var(--kept); }
.card.v-kept .from { color: var(--kept); }
.card.v-lost .dot { background: var(--lost); }
.card.v-lost .verdict { color: var(--lost); }
.card.v-lost .from { color: var(--lost); }
.card.v-shifted .dot { background: var(--shifted); }
.card.v-shifted .verdict { color: var(--shifted); }
.card.v-shifted .from { color: var(--shifted); }
.card .why {
  font-size: .92rem;
  color: var(--ink-2);
  line-height: 1.55;
}

/* ── Figures ────────────────────────────────────────── */
.fig { margin: 1.5rem 0 0; }
.fig.wide { margin-left: auto; margin-right: auto; }
.fig img { border-radius: 6px; }
.fig.tall img { max-width: 22rem; margin: 0 auto; }
.fig.narrow img { max-width: 16rem; margin: 0 auto; }
.fig figcaption {
  font-size: .85rem;
  color: var(--ink-3);
  margin-top: .5rem;
  line-height: 1.45;
}
.fig .cr { font-size: .78rem; display: block; margin-top: .25rem; }
.fig .cr a { color: var(--ink-4); }
.duo {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 1.5rem;
}
@media (min-width: 50rem) {
  .duo { grid-template-columns: 1fr 1fr; align-items: start; }
}

/* ── Facts DL ───────────────────────────────────────── */
.facts {
  margin-top: 1.5rem;
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}
.facts dt {
  font-family: var(--font-display);
  font-size: .85rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-top: .75rem;
}
.facts dt:first-child { margin-top: 0; }
.facts dd { margin-left: 0; color: var(--ink-2); }

/* ── Sources ────────────────────────────────────────── */
.srcs { padding: 0; list-style: none; }
.srcs li {
  padding: .5rem 0;
  border-bottom: 1px solid var(--border);
  font-size: .9rem;
  color: var(--ink-2);
}
.srcs li:last-child { border-bottom: none; }
.srcs a { word-break: break-all; }

/* ── Footer ─────────────────────────────────────────── */
.foot {
  padding: 2rem 0;
  text-align: center;
  font-size: .85rem;
  color: var(--ink-4);
  border-top: 1px solid var(--border);
}
.foot a { color: var(--ink-3); }
.foot p + p { margin-top: .25rem; }

/* ── Rail (desktop reading rail) ────────────────────── */
.rail { display: none; }
@media (min-width: 90rem) {
  .rail {
    display: flex;
    flex-direction: column;
    gap: .15rem;
    position: fixed;
    right: 1.5rem;
    top: 50%;
    transform: translateY(-50%);
    z-index: 90;
  }
  .rail a {
    display: flex;
    align-items: center;
    gap: .5rem;
    flex-direction: row-reverse;
    text-decoration: none;
    color: var(--ink-4);
    font-size: .8rem;
    padding: .25rem 0;
  }
  .rail a i {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--stone);
    display: block;
  }
  .rail a[aria-current="true"] { color: var(--ink); }
  .rail a[aria-current="true"] i { background: var(--accent); }
  .rail a span {
    opacity: 0;
    transition: opacity .15s;
    white-space: nowrap;
  }
  .rail a:hover span, .rail a[aria-current="true"] span { opacity: 1; }
}

/* ── Reduced motion ─────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}