/* 1revedia — Robot XR
   Palette relevée sur le sujet : le béton du parking, le jaune routier de la coque,
   le bitume, et le vert du tag utilisé une seule fois. */

:root {
  --concrete:    #C9C5BC;
  --concrete-lo: #B6B2A8;
  --asphalt:     #16181A;
  --asphalt-mid: #2A2D30;
  --paint:       #F2B707;
  --paint-worn:  #C98A11;
  --tag:         #47B84B;
  --chalk:       #EDE9E0;

  --display: "Arial Narrow", "Roboto Condensed", "Liberation Sans Narrow", "Helvetica Neue", Arial, sans-serif;
  --body: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", "SF Mono", Menlo, Consolas, monospace;

  --gut: clamp(1.25rem, 5vw, 4.5rem);
  --maxw: 78rem;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--concrete);
  color: var(--asphalt);
  font-family: var(--body);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  line-height: 1.65;
  overflow-x: hidden;
}

img, video { max-width: 100%; display: block; }

a { color: inherit; }

:focus-visible {
  outline: 3px solid var(--asphalt);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--asphalt);
  color: var(--chalk);
  padding: 0.75rem 1.25rem;
  z-index: 10;
  text-decoration: none;
}
.skip:focus { left: 0; }

/* ---------- bandeau ---------- */

.bar {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 1.1rem var(--gut);
  border-bottom: 1px solid rgba(22, 24, 26, 0.28);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.bar__mark { font-weight: 700; }

.bar__meta {
  display: flex;
  gap: 0.6rem;
  color: rgba(22, 24, 26, 0.62);
}

/* ---------- héro ---------- */

.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(2rem, 6vw, 4.5rem) var(--gut) 0;
}

.hero__screen {
  position: relative;
  background: var(--asphalt);
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.hero__video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__toggle {
  position: absolute;
  right: 0.75rem;
  bottom: 0.75rem;
  border: 1px solid rgba(237, 233, 224, 0.5);
  background: rgba(22, 24, 26, 0.72);
  color: var(--chalk);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.5rem 0.85rem;
  cursor: pointer;
}
.hero__toggle:hover { background: var(--asphalt); border-color: var(--paint); }
.hero__toggle:focus-visible { outline-color: var(--paint); }

/* Le titre déborde sur l'écran : marquage peint que la machine recouvre en partie. */
.hero__title {
  font-family: var(--display);
  font-weight: 700;
  text-transform: uppercase;
  font-size: clamp(3.5rem, 17vw, 12rem);
  line-height: 0.8;
  letter-spacing: -0.015em;
  margin: -0.28em 0 0;
  color: var(--asphalt);
  position: relative;
  pointer-events: none;
}

.hero__lede {
  max-width: 46ch;
  margin: 1.6rem 0 0;
  font-size: clamp(1.05rem, 1rem + 0.4vw, 1.3rem);
  line-height: 1.55;
}

/* ---------- fiche technique ---------- */

.spec {
  max-width: var(--maxw);
  margin: clamp(3rem, 8vw, 5.5rem) auto 0;
  padding: 0 var(--gut);
}

/* 6 entrées : paliers 2 / 3 / 6, jamais de cellule vide. */
.spec__list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin: 0;
  background: rgba(22, 24, 26, 0.22);
  border: 1px solid rgba(22, 24, 26, 0.22);
}

@media (min-width: 34rem) {
  .spec__list { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 62rem) {
  .spec__list { grid-template-columns: repeat(6, 1fr); }
}

.spec__item {
  background: var(--concrete);
  padding: 1rem 1.1rem 1.15rem;
}

.spec__item dt {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(22, 24, 26, 0.6);
}

.spec__item dd {
  margin: 0.35rem 0 0;
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.6rem;
  letter-spacing: 0.01em;
  line-height: 1;
}

/* ---------- bande de danger : une seule fois ---------- */

.hazard {
  height: 12px;
  margin: clamp(3.5rem, 9vw, 6rem) 0 0;
  background: repeating-linear-gradient(
    -45deg,
    var(--paint) 0 14px,
    var(--asphalt) 14px 28px
  );
}

/* ---------- fabrication ---------- */

.steps {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(2.5rem, 7vw, 4.5rem) var(--gut) 0;
}

.steps__head {
  font-family: var(--display);
  font-weight: 700;
  text-transform: uppercase;
  font-size: clamp(2rem, 7vw, 4rem);
  line-height: 0.95;
  letter-spacing: -0.01em;
  margin: 0;
}

.steps__intro {
  max-width: 52ch;
  margin: 1rem 0 0;
  color: rgba(22, 24, 26, 0.82);
}

.steps__list {
  list-style: none;
  margin: clamp(2.5rem, 6vw, 4rem) 0 0;
  padding: 0;
}

.step {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2.75rem);
  padding: clamp(2rem, 5vw, 3rem) 0;
  border-top: 1px solid rgba(22, 24, 26, 0.28);
}

.step__figure { margin: 0; background: var(--asphalt); }

.step__figure img {
  width: 100%;
  height: auto;
}

.step__value {
  font-family: var(--mono);
  margin: 0 0 0.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.55rem;
}

.step__num {
  font-size: clamp(2rem, 6vw, 3.1rem);
  font-weight: 700;
  line-height: 1;
  color: var(--asphalt);
  background: var(--paint);
  padding: 0.12em 0.3em 0.18em;
  white-space: nowrap;
}

.step__arrow { color: var(--asphalt-mid); }

.step__unit {
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(22, 24, 26, 0.66);
}

.step__title {
  font-family: var(--display);
  font-weight: 700;
  text-transform: uppercase;
  font-size: clamp(1.5rem, 3.5vw, 2.1rem);
  line-height: 1;
  letter-spacing: 0.01em;
  margin: 0.7rem 0 0.6rem;
}

.step__body p { margin: 0; max-width: 58ch; }

.step__body em { font-style: normal; border-bottom: 2px solid var(--paint); }

.step__body strong { font-weight: 600; }

@media (min-width: 56rem) {
  .step { grid-template-columns: 1.15fr 1fr; align-items: start; }
  .step:nth-child(even) .step__figure { order: 2; }
}

/* ---------- pied ---------- */

.foot {
  background: var(--asphalt);
  color: var(--chalk);
  margin-top: clamp(3.5rem, 9vw, 6rem);
  padding: clamp(3rem, 9vw, 6rem) var(--gut);
  text-align: center;
}

.foot__title {
  font-family: var(--display);
  font-weight: 700;
  text-transform: uppercase;
  font-size: clamp(1.9rem, 6vw, 3.4rem);
  line-height: 1;
  letter-spacing: 0.01em;
  margin: 0;
}

.foot__line { margin: 1.4rem 0 0; font-size: clamp(1.05rem, 3vw, 1.35rem); }

.foot__line a {
  font-family: var(--mono);
  color: var(--paint);
  text-decoration: none;
  border-bottom: 2px solid rgba(242, 183, 7, 0.42);
  padding-bottom: 0.15em;
}
.foot__line a:hover { border-bottom-color: var(--paint); }
.foot__line a:focus-visible { outline-color: var(--paint); }

.foot__fine {
  margin: 2.5rem 0 0;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(237, 233, 224, 0.5);
}

.foot__dom { color: var(--tag); }

/* ---------- révélation au défilement ---------- */

.reveal { opacity: 0; transform: translateY(18px); }

.reveal--in {
  opacity: 1;
  transform: none;
  transition: opacity 0.55s ease, transform 0.55s ease;
}

@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal--in { opacity: 1; transform: none; transition: none; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}