/* Phenord — the palette is the app's grammar code: every accent colour on the
   site means the same word class it means in the exercise. */

@font-face {
  font-family: "Fredoka";
  src: url("/fonts/fredoka-latin-600-normal.woff2") format("woff2");
  font-weight: 600;
  font-display: swap;
}
@font-face {
  font-family: "Fredoka";
  src: url("/fonts/fredoka-latin-700-normal.woff2") format("woff2");
  font-weight: 700;
  font-display: swap;
}
@font-face {
  font-family: "Atkinson Hyperlegible";
  src: url("/fonts/atkinson-hyperlegible-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "Atkinson Hyperlegible";
  src: url("/fonts/atkinson-hyperlegible-latin-700-normal.woff2") format("woff2");
  font-weight: 700;
  font-display: swap;
}

:root {
  /* grammar code, identical to the app's default palette */
  --det: #f4d35e;
  --noun: #5dade2;
  --verb: #ef5350;
  --prep: #ff9f43;
  /* brand */
  --teal: #155e66;
  --teal-deep: #0e4349;
  --ink: #16282b;
  --muted: #56696d;
  --page: #f6f8fb;
  --card: #ffffff;
  --line: #dfe6ea;
  --focus: #1d7fd6;
  --accent-text: #155e66;
  --radius-xl: 36px;
  --radius-l: 22px;
  --display: "Fredoka", "Avenir Next Rounded", ui-rounded, system-ui, sans-serif;
  --body: "Atkinson Hyperlegible", system-ui, -apple-system, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #eaf2f3;
    --muted: #a9bcc0;
    --page: #0f1719;
    --card: #182326;
    --line: #2a393d;
    --teal: #1b6f78;
    --teal-deep: #0b2f33;
    --accent-text: #8fd2d9;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 18px/1.6 var(--body);
  -webkit-text-size-adjust: 100%;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration-thickness: 2px; text-underline-offset: 3px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 8px; }

h1, h2, h3 { font-family: var(--display); font-weight: 700; line-height: 1.1; margin: 0; letter-spacing: -0.01em; }
h1 { font-size: clamp(38px, 7vw, 68px); }
h2 { font-size: clamp(30px, 5vw, 46px); }
h3 { font-size: 24px; font-weight: 600; }
p { margin: 0; }

.wrap { width: min(1160px, 100% - 32px); margin-inline: auto; }

/* header */
.site-head { padding: 18px 0; }
.site-head .wrap { display: flex; align-items: center; gap: 20px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font: 700 26px var(--display); color: var(--accent-text); }
.brand img { width: 44px; height: 44px; border-radius: 12px; }
.site-head nav { margin-left: auto; display: flex; gap: 22px; font-weight: 700; font-size: 16px; }
.site-head nav a { text-decoration: none; color: var(--muted); }
.site-head nav a:hover, .site-head nav a[aria-current="page"] { color: var(--ink); }
@media (max-width: 720px) { .site-head nav .wide { display: none; } }

/* colour blocks (the big rounded cards) */
.block { border-radius: var(--radius-xl); padding: clamp(28px, 5vw, 64px); position: relative; overflow: hidden; }
section { margin: 24px 0; }

/* hero */
.hero { background: var(--teal); color: #fff; display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(24px, 4vw, 56px); align-items: center; }
.hero::after {
  /* the grammar code as a quiet signature stripe */
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 10px;
  background: linear-gradient(90deg, var(--det) 0 25%, var(--noun) 25% 50%, var(--verb) 50% 75%, var(--prep) 75%);
}
.hero h1 span { display: block; }
.hero .det { color: var(--det); }
.hero .noun { color: #9fd4f5; }
.hero .verb { color: #ff9c9a; }
.hero .lead { font-size: 20px; margin: 20px 0 28px; max-width: 34ch; color: #e4f1f2; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.pill {
  display: inline-flex; align-items: center; gap: 10px; padding: 14px 24px; border-radius: 999px;
  font: 600 18px var(--display); text-decoration: none; border: 0; cursor: pointer;
}
.pill-sun { background: var(--det); color: #2b2300; box-shadow: 0 6px 0 #c9a42d; }
.pill-ghost { color: #fff; background: rgba(255, 255, 255, .12); }
.pill-ghost:hover { background: rgba(255, 255, 255, .2); }
@media (max-width: 860px) { .hero { grid-template-columns: 1fr; } }

/* the interactive exercise */
.demo { background: var(--card); color: var(--ink); border-radius: var(--radius-l); padding: 14px; box-shadow: 0 24px 50px rgba(0, 0, 0, .25); }
.demo figure { margin: 0; }
.demo figure img { border-radius: 14px; aspect-ratio: 16 / 9; object-fit: cover; width: 100%; }
.slots, .pool { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 12px; }
.slot, .card-btn {
  aspect-ratio: 1 / 1.05; border-radius: 16px; display: grid; place-items: center; align-content: center; gap: 4px;
  font: 700 16px var(--body); background: var(--card); color: var(--ink); padding: 6px;
}
.slot { border: 3px dashed var(--line); }
.slot[data-role="det"] { border-color: var(--det); }
.slot[data-role="noun"] { border-color: var(--noun); }
.slot[data-role="verb"] { border-color: var(--verb); }
.slot.filled { border-style: solid; cursor: pointer; }
.slot.wrong { animation: shake .4s; border-color: var(--verb); }
.slot .dots { color: var(--muted); font-size: 22px; letter-spacing: 2px; }
.card-btn { border: 3px solid var(--line); cursor: pointer; box-shadow: 0 4px 0 var(--line); transition: transform .12s; }
.card-btn:hover { transform: translateY(-2px); }
.card-btn[data-role="det"] { border-color: var(--det); box-shadow: 0 4px 0 var(--det); }
.card-btn[data-role="noun"] { border-color: var(--noun); box-shadow: 0 4px 0 var(--noun); }
.card-btn[data-role="verb"] { border-color: var(--verb); box-shadow: 0 4px 0 var(--verb); }
.card-btn.home { border: 2px solid var(--line); box-shadow: none; background: color-mix(in srgb, var(--line) 35%, transparent); color: transparent; cursor: default; transform: none; }
.card-btn.home img { visibility: hidden; }
.slot img, .card-btn img { width: 58%; height: auto; pointer-events: none; background: #fff; border-radius: 8px; }
.demo-status { min-height: 1.6em; margin: 12px 4px 0; font-weight: 700; color: var(--accent-text); text-align: center; }
.demo-hint { font-size: 14px; color: var(--muted); text-align: center; }
@keyframes shake { 25% { transform: translateX(-4px); } 75% { transform: translateX(4px); } }

/* how it works: a real sequence, so it is numbered */
.section-head { max-width: 720px; }
.section-head p { color: var(--muted); font-size: 20px; margin-top: 12px; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin: 32px 0 0; padding: 0; counter-reset: step; }
.steps li { list-style: none; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-l); padding: 28px; counter-increment: step; }
.steps li::before {
  content: counter(step); display: grid; place-items: center; width: 48px; height: 48px; border-radius: 50%;
  background: var(--teal); color: #fff; font: 700 24px var(--display); margin-bottom: 16px;
}
.steps p { color: var(--muted); margin-top: 8px; }
@media (max-width: 860px) { .steps { grid-template-columns: 1fr; } }

/* structure ladder */
.ladder { background: var(--card); border: 1px solid var(--line); }
.rungs { display: grid; gap: 16px; margin-top: 28px; }
.rung { display: grid; grid-template-columns: 150px 1fr; gap: 16px; align-items: center; }
.rung b { font: 700 22px var(--display); color: var(--accent-text); }
.rung small { display: block; font: 400 14px var(--body); color: var(--muted); }
.words { display: flex; flex-wrap: wrap; gap: 8px; }
.w { padding: 5px 13px; border-radius: 12px; border: 3px solid; font-weight: 700; background: var(--card); }
.w.det { border-color: var(--det); }
.w.noun { border-color: var(--noun); }
.w.verb { border-color: var(--verb); }
.w.prep { border-color: var(--prep); }
@media (max-width: 600px) { .rung { grid-template-columns: 1fr; gap: 6px; } }
.legend { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 28px; font-size: 15px; color: var(--muted); }
.legend span::before { content: ""; display: inline-block; width: 14px; height: 14px; border-radius: 4px; margin-right: 6px; vertical-align: -2px; }
.legend .det::before { background: var(--det); }
.legend .noun::before { background: var(--noun); }
.legend .verb::before { background: var(--verb); }
.legend .prep::before { background: var(--prep); }

/* feature colour blocks */
.features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.features .block { color: #1d1d1d; min-height: 300px; display: flex; flex-direction: column; justify-content: flex-end; }
.features .block p { margin-top: 12px; font-size: 18px; max-width: 36ch; }
.features .tag { position: absolute; top: 24px; left: clamp(28px, 5vw, 64px); font: 600 14px var(--display); letter-spacing: .06em; text-transform: uppercase; background: rgba(255, 255, 255, .55); padding: 4px 12px; border-radius: 999px; }
.f-det { background: var(--det); }
.f-noun { background: var(--noun); }
.f-verb { background: var(--verb); }
.features .f-verb { color: #fff; }
.f-verb .tag { background: rgba(255, 255, 255, .22); }
.f-prep { background: var(--prep); }
.features .art { align-self: flex-end; width: 44%; max-width: 240px; margin: 0 0 24px; border-radius: 18px; transform: rotate(3deg); box-shadow: 0 10px 24px rgba(0, 0, 0, .18); }
.features .art.picto { background: #fff; padding: 12px; width: 30%; max-width: 140px; transform: rotate(-4deg); }
@media (max-width: 860px) {
  .features { grid-template-columns: 1fr; }
  .features .block { min-height: 0; padding-top: 72px; }
  .features .art { width: 55%; }
  .features .art.picto { width: 34%; }
}

/* audiences */
.people { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 32px; }
.people div { border-top: 6px solid var(--line); padding-top: 16px; }
.people .det { border-color: var(--det); }
.people .noun { border-color: var(--noun); }
.people .verb { border-color: var(--verb); }
.people p { color: var(--muted); margin-top: 8px; }
@media (max-width: 860px) { .people { grid-template-columns: 1fr; } }

/* offer */
.offer { background: var(--teal-deep); color: #fff; text-align: center; }
.offer p { color: #cfe3e5; max-width: 52ch; margin: 16px auto 28px; font-size: 20px; }

/* long-form pages */
.doc { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-xl); padding: clamp(24px, 5vw, 56px); margin: 8px 0 24px; }
.doc > * { max-width: 760px; }
.doc h1 { font-size: clamp(34px, 6vw, 52px); }
.doc h2 { font-size: 26px; margin: 40px 0 10px; color: var(--accent-text); }
.doc h3 { font-size: 20px; margin: 24px 0 6px; }
.doc p, .doc li { line-height: 1.65; }
.doc p + p { margin-top: 12px; }
.doc ul { padding-left: 22px; }
.doc a { color: var(--accent-text); }
.muted { color: var(--muted); font-size: 16px; margin-top: 8px; }
.note { background: color-mix(in srgb, var(--det) 22%, var(--card)); border-radius: 18px; padding: 18px 22px; margin: 20px 0; }
.note p + p { margin-top: 8px; }

table { width: 100%; border-collapse: collapse; font-size: 16px; margin: 12px 0; }
th, td { text-align: left; vertical-align: top; padding: 10px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 700; }
@media (max-width: 600px) {
  table.stack thead { display: none; }
  table.stack, table.stack tbody, table.stack tr, table.stack td { display: block; width: 100%; }
  table.stack tr { border: 1px solid var(--line); border-radius: 14px; padding: 4px 12px; margin-bottom: 12px; }
  table.stack td { border: 0; padding: 6px 0; }
  table.stack td::before { content: attr(data-label); display: block; font-size: 13px; font-weight: 700; color: var(--muted); }
}

.faq details { border-bottom: 1px solid var(--line); padding: 16px 0; }
.faq summary { font: 600 20px var(--display); cursor: pointer; }
.faq details p { margin-top: 10px; color: var(--muted); }

.doc a.download { background: var(--teal); color: #fff; margin-top: 16px; text-decoration: none; }
.doc { overflow-wrap: anywhere; }

/* footer */
.site-foot { padding: 36px 0 48px; color: var(--muted); font-size: 15px; }
.site-foot .wrap { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; }
.site-foot nav { display: flex; flex-wrap: wrap; gap: 18px; }
.site-foot .by { margin-left: auto; }
@media (max-width: 720px) { .site-foot .by { margin-left: 0; width: 100%; } }

.notfound { text-align: center; padding: 72px 0; }
.notfound img { width: 96px; margin: 0 auto 20px; border-radius: 22px; }

#fonctionnement, #pour-qui { margin: clamp(48px, 8vw, 88px) 0; }