:root {
  --sauge: #E9EEE6;
  --craie: #F8FAF6;
  --lichen: #B9C7B5;
  --mousse: #3E6B5A;
  --encre: #1E2F2A;
  --miel: #D9962B;

  --font: "Avenir Next", "Avenir", "Segoe UI Variable Text", "Segoe UI", "Roboto",
    "Noto Sans", system-ui, sans-serif;
  --measure: 34rem;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--sauge);
  color: var(--encre);
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

:focus-visible {
  outline: 3px solid var(--miel);
  outline-offset: 3px;
  border-radius: 4px;
}

/* En-tête */

.top,
main,
.foot {
  width: min(70rem, 100% - 3rem);
  margin-inline: auto;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.75rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.mark { width: 2rem; height: 2rem; }

.status {
  margin: 0;
  font-size: 0.875rem;
  color: var(--mousse);
}

/* Accroche */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
  padding-block: clamp(2.5rem, 7vw, 5.5rem) clamp(3rem, 8vw, 6.5rem);
}

h1 {
  margin: 0;
  max-width: 12ch;
  font-size: clamp(2.4rem, 5.2vw, 3.75rem);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

.lede {
  max-width: var(--measure);
  margin: 1.5rem 0 0;
  font-size: 1.1875rem;
  color: var(--mousse);
}

/* Scène : trois appareils */

.scene { margin: 0; }

.devices {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-areas:
    "mac mac"
    "android windows";
  gap: 0.75rem;
}

.device {
  padding: 0.75rem;
  background: var(--craie);
  border: 1px solid var(--lichen);
  border-radius: 14px;
}

.device[data-device="mac"] { grid-area: mac; }
.device[data-device="android"] { grid-area: android; border-radius: 22px; }
.device[data-device="windows"] { grid-area: windows; border-radius: 8px; }

.device-name {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0 0 0.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
}

.net {
  padding: 0.05rem 0.55rem;
  border-radius: 999px;
  background: var(--encre);
  color: var(--craie);
  font-weight: 500;
  transition: background-color 300ms ease, color 300ms ease;
}

.scene.online .net {
  background: var(--mousse);
}

.board {
  --pad: 8px;
  --gap: 6px;
  --tile: 14px;
  --step: 19px; /* hauteur d'une tuile + son espacement */
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
  height: 88px;
  padding: var(--pad);
  border-radius: 8px;
  background: var(--sauge);
}

.device[data-device="mac"] .board { height: 92px; }

.col i {
  display: block;
  height: var(--tile);
  margin-bottom: 5px;
  border-radius: 3px;
  background: var(--craie);
  box-shadow: 0 1px 0 var(--lichen);
}

.col i.short { width: 70%; }

/* La carte qui voyage : en bas de la première colonne, puis sous la carte
   de la deuxième. */
.moving {
  position: absolute;
  left: var(--pad);
  top: calc(var(--pad) + 3 * var(--step));
  width: calc((100% - 2 * var(--pad) - 2 * var(--gap)) / 3);
  height: var(--tile);
  border-radius: 3px;
  background: var(--miel);
  transition: transform 700ms cubic-bezier(0.3, 0, 0.2, 1);
}

.device.moved .moving {
  transform: translate(calc(100% + var(--gap)), calc(-2 * var(--step)));
}

figcaption {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  margin-top: 0.85rem;
  font-size: 0.9375rem;
  color: var(--mousse);
}

figcaption span { max-width: 30rem; }

.replay {
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--encre);
  border-radius: 999px;
  background: transparent;
  color: var(--encre);
  font: inherit;
  font-size: 0.875rem;
  cursor: pointer;
}

.replay:hover { background: var(--craie); }

/* Fonctions */

h2 {
  margin: 0 0 2rem;
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.features {
  padding-block: clamp(3rem, 7vw, 5rem);
  border-top: 1px solid var(--lichen);
}

.features dl {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem clamp(2rem, 5vw, 4rem);
  margin: 0;
}

.features dt {
  position: relative;
  padding-left: 1.4rem;
  font-weight: 600;
  font-size: 1.125rem;
}

/* Puce hexagonale, rappel du logo */
.features dt::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 0.7rem;
  height: 0.8rem;
  background: var(--mousse);
  clip-path: polygon(50% 0, 100% 25%, 100% 75%, 50% 100%, 0 75%, 0 25%);
}

.features dd {
  max-width: var(--measure);
  margin: 0.35rem 0 0 1.4rem;
}

/* État du projet */

.state {
  padding-block: clamp(3rem, 7vw, 5rem);
  border-top: 1px solid var(--lichen);
}

.state > p {
  max-width: var(--measure);
  margin: 0 0 2rem;
}

.stack {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin: 0;
}

.stack div {
  padding-top: 0.75rem;
  border-top: 3px solid var(--encre);
}

.stack dt { font-weight: 600; }
.stack dd { margin: 0; color: var(--mousse); }

/* Pied */

.foot {
  padding-block: 2rem 3rem;
  border-top: 1px solid var(--lichen);
  font-size: 0.875rem;
  color: var(--mousse);
}

.foot p { margin: 0; }

/* Petits écrans */

@media (max-width: 52rem) {
  .hero { grid-template-columns: 1fr; }
  h1 { max-width: 14ch; }
  .stack { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 36rem) {
  .features dl { grid-template-columns: 1fr; }
  .devices {
    grid-template-columns: 1fr;
    grid-template-areas: "mac" "android" "windows";
  }
}

@media (prefers-reduced-motion: reduce) {
  .moving,
  .net { transition: none; }
}