/* =============================================================================
   DRIMBOT — Page « Le robot »
   Fiche technique premium du Unitree G1 : scène d'ingénieur annotée,
   pile logicielle en couches, blocs sécurité & logistique.
   ============================================================================= */

/* ---------------------------------------------------------------------------
   HERO — scène blueprint annotée
--------------------------------------------------------------------------- */
.rb-hero-grid {
  display: grid;
  grid-template-columns: 1.02fr .98fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
@media (max-width: 980px) { .rb-hero-grid { grid-template-columns: 1fr; } }

.rb-hero-ctas { display: flex; flex-wrap: wrap; gap: .9rem; margin-top: 2.1rem; }
.rb-hero-tags { margin-top: 2.1rem; }

.rb-scene {
  position: relative;
  min-height: 560px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(540px 420px at 50% 40%, var(--cobalt-tint) 0%, transparent 72%),
    var(--surface);
  overflow: hidden;
}
.rb-scene::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--line-2) 1px, transparent 1.5px);
  background-size: 24px 24px;
  mask-image: radial-gradient(closest-side at 50% 50%, #000 25%, transparent);
  -webkit-mask-image: radial-gradient(closest-side at 50% 50%, #000 25%, transparent);
  pointer-events: none;
}
.rb-scene__ref {
  position: absolute;
  font-family: var(--font-mono);
  font-size: .66rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.rb-scene__ref--tl { top: 1rem; left: 1.2rem; }
.rb-scene__ref--br { bottom: 1rem; right: 1.2rem; }

.rb-robot {
  position: relative;
  width: min(262px, 56vw);
  filter: drop-shadow(0 36px 46px rgb(20 24 31 / .18));
}
.rb-floor {
  position: absolute;
  bottom: 12%;
  left: 50%;
  translate: -50% 0;
  width: min(300px, 64%);
  height: 24px;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgb(20 24 31 / .15), transparent 70%);
}
@keyframes rb-core-breathe {
  0%, 100% { opacity: .4; }
  50% { opacity: 1; }
}
.rb-robot .core-glow { animation: rb-core-breathe 3.2s ease-in-out infinite; }
@media (prefers-reduced-motion: reduce) { .rb-robot .core-glow { animation: none; } }

/* Cote dimensionnelle « 1,32 m » */
.rb-dim {
  position: absolute;
  left: clamp(1.1rem, 5%, 2.2rem);
  top: 50%;
  height: 370px;
  translate: 0 -50%;
  width: 1px;
  background: var(--line-2);
}
.rb-dim::before, .rb-dim::after {
  content: '';
  position: absolute;
  left: -6px;
  width: 13px;
  height: 1px;
  background: var(--ink-3);
}
.rb-dim::before { top: 0; }
.rb-dim::after { bottom: 0; }
.rb-dim span {
  position: absolute;
  top: 50%;
  left: .5px;
  transform: translate(-50%, -50%) rotate(-90deg);
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--ink-2);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: .25em .7em;
  white-space: nowrap;
}

/* Annotations techniques avec point d'ancrage + ligne de rappel */
.rb-note {
  position: absolute;
  font-family: var(--font-mono);
  font-size: .68rem;
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 168px;
}
.rb-note b {
  display: block;
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink);
}
.rb-note::before {
  content: '';
  position: absolute;
  top: .3rem;
  width: 9px;
  height: 9px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  background: var(--surface);
}
.rb-note::after {
  content: '';
  position: absolute;
  top: calc(.3rem + 5px);
  width: 2rem;
  height: 1px;
  background: var(--line-2);
}
/* texte côté droit de la scène, repère pointant vers la gauche (le robot) */
.rb-note--r { text-align: left; }
.rb-note--r::before { left: -3.1rem; }
.rb-note--r::after { left: calc(-3.1rem + 12px); }
/* texte côté gauche, repère pointant vers la droite */
.rb-note--l { text-align: right; }
.rb-note--l::before { right: -3.1rem; }
.rb-note--l::after { right: calc(-3.1rem + 12px); }

.rb-note--head   { top: 8%; right: 1.1rem; }
.rb-note--core   { top: 27%; left: 4rem; }
.rb-note--joints { top: 48%; right: 1.1rem; }
.rb-note--batt   { bottom: 21%; left: 4rem; }
.rb-note--speed  { bottom: 6%; right: 1.1rem; }

@media (max-width: 720px) {
  .rb-note, .rb-dim { display: none; }
  .rb-scene { min-height: 420px; }
}

/* ---------------------------------------------------------------------------
   PILE LOGICIELLE — couches empilées (section sombre)
--------------------------------------------------------------------------- */
.rb-stack {
  display: flex;
  flex-direction: column;
  gap: .85rem;
  max-width: 940px;
  margin-inline: auto;
}
.rb-stack__layer {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 1.5rem;
  align-items: start;
  background: rgb(255 255 255 / .04);
  border: 1px solid rgb(255 255 255 / .13);
  border-radius: var(--r-lg);
  padding: clamp(1.4rem, 3vw, 2rem);
  transition: border-color var(--t-med), background var(--t-med), transform var(--t-med);
}
.rb-stack__layer:hover {
  border-color: color-mix(in srgb, var(--accent) 50%, transparent);
  background: rgb(255 255 255 / .07);
  transform: translateX(8px);
}
.rb-stack__layer:nth-child(1) { margin-inline: clamp(0rem, 6vw, 5.4rem); }
.rb-stack__layer:nth-child(2) { margin-inline: clamp(0rem, 4vw, 3.6rem); }
.rb-stack__layer:nth-child(3) { margin-inline: clamp(0rem, 2vw, 1.8rem); }
.rb-stack__num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1;
  color: var(--accent);
  padding-top: .2rem;
}
.rb-stack__num small {
  display: block;
  font-size: .58rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: #7B8290;
  margin-top: .5rem;
}
.rb-stack h3 { color: #fff; font-size: clamp(1.15rem, 1.8vw, 1.4rem); margin-bottom: .4rem; }
.rb-stack p { color: #A8AFBC; font-size: .95rem; max-width: 64ch; }
.rb-stack .tag-row { margin-top: .95rem; }
.rb-stack .spec-tag {
  background: rgb(255 255 255 / .05);
  border-color: rgb(255 255 255 / .15);
  color: #C7CCD6;
}
@media (max-width: 680px) {
  .rb-stack__layer { grid-template-columns: 1fr; gap: .6rem; margin-inline: 0 !important; }
  .rb-stack__layer:hover { transform: none; }
}

/* ---------------------------------------------------------------------------
   NOTE « EN IMAGES, BIENTÔT »
--------------------------------------------------------------------------- */
.rb-soon {
  text-align: center;
  background: var(--surface);
  border: 1px dashed var(--line-2);
  border-radius: var(--r-lg);
  padding: clamp(2.2rem, 5vw, 3.4rem) clamp(1.4rem, 4vw, 3rem);
}
.rb-soon .kicker { justify-content: center; }
.rb-soon__big {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.4vw, 1.8rem);
  font-weight: 700;
  line-height: 1.32;
  letter-spacing: -.01em;
  max-width: 27em;
  margin-inline: auto;
  text-wrap: balance;
}

/* ---------------------------------------------------------------------------
   CTA FINAL — lueur configurateur
--------------------------------------------------------------------------- */
.rb-cta { position: relative; overflow: hidden; }
.rb-cta__glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(620px 400px at 50% 115%, rgb(0 155 97 / .18) 0%, transparent 62%),
    radial-gradient(520px 340px at 10% -12%, rgb(36 71 224 / .16) 0%, transparent 55%);
  pointer-events: none;
}