/* Page /ia — Jarvis, l'IA embarquée. */

.ia { --ia-cyan: #4FC3F7; --ia-violet: #7C4DFF; --ia-ember: #FF6B35; --ia-red: #EF5350; --ia-amber: #FFA726;
  --ia-card: rgba(17, 32, 58, .72); --ia-line: rgba(79, 195, 247, .18); overflow-x: clip; }

/* ── Héro ─────────────────────────────────────────────────────── */
.ia-hero { position: relative; padding: 72px 0 40px; isolation: isolate; }
.ia-hero::before { content: ""; position: absolute; inset: -20% -10% auto; height: 120%; z-index: -1;
  background: radial-gradient(60% 50% at 75% 40%, rgba(124, 77, 255, .22), transparent 70%),
              radial-gradient(45% 45% at 20% 20%, rgba(79, 195, 247, .16), transparent 70%); }
.ia-hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 40px; align-items: center; }
.ia-eyebrow { display: inline-flex; gap: 8px; align-items: center; font-size: 12px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--ia-cyan); font-weight: 700; }
.ia-eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ia-cyan); box-shadow: 0 0 0 0 rgba(79,195,247,.6);
  animation: ia-ping 2.2s infinite; }
@keyframes ia-ping { 0% { box-shadow: 0 0 0 0 rgba(79,195,247,.55); } 80%, 100% { box-shadow: 0 0 0 12px rgba(79,195,247,0); } }
.ia-hero h1 { font-size: clamp(34px, 5vw, 58px); line-height: 1.04; letter-spacing: -.02em; margin: 14px 0 18px; }
.ia-hero h1 .grad { background: linear-gradient(100deg, var(--ia-cyan), #b39dff 45%, var(--ia-ember)); -webkit-background-clip: text;
  background-clip: text; color: transparent; }
.ia-hero .lead { font-size: 18px; line-height: 1.6; color: var(--text-muted); max-width: 560px; }
.ia-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.ia-chip { display: inline-flex; align-items: center; gap: 7px; padding: 7px 12px; border-radius: 999px; font-size: 13px; font-weight: 600;
  background: rgba(255,255,255,.04); border: 1px solid var(--ia-line); color: var(--text); }
.ia-chip svg { width: 15px; height: 15px; color: var(--ia-cyan); }
.ia-stage { position: relative; aspect-ratio: 4 / 3; border-radius: 22px; overflow: hidden; border: 1px solid var(--ia-line);
  background: #07111f; box-shadow: 0 30px 80px rgba(0,0,0,.45), 0 0 0 1px rgba(124,77,255,.12) inset; }
.ia-stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.ia-stage .ia-hud { position: absolute; left: 14px; top: 14px; right: 14px; display: flex; justify-content: space-between; gap: 8px;
  font: 600 11px/1 'JetBrains Mono', ui-monospace, monospace; color: #cfe8ff; pointer-events: none; }
.ia-stage .ia-hud span { background: rgba(7,17,31,.72); border: 1px solid var(--ia-line); padding: 6px 9px; border-radius: 8px; backdrop-filter: blur(4px); }
.ia-stage .ia-hud b { color: var(--ia-cyan); }

/* ── Sections ────────────────────────────────────────────────── */
.ia-section { padding: 64px 0; position: relative; }
.ia-section h2 { font-size: clamp(26px, 3.4vw, 38px); letter-spacing: -.015em; line-height: 1.12; margin: 8px 0 14px; }
.ia-section .intro { color: var(--text-muted); font-size: 17px; line-height: 1.65; max-width: 720px; }
.ia-kicker { font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--ia-cyan); font-weight: 700; }

/* fait / ne fait pas */
.ia-duo { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 28px; }
.ia-card { background: var(--ia-card); border: 1px solid var(--border); border-radius: 18px; padding: 24px; position: relative; overflow: hidden; }
.ia-card h3 { margin: 0 0 14px; font-size: 18px; display: flex; gap: 10px; align-items: center; }
.ia-card h3 .ic { width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; }
.ia-card.yes h3 .ic { background: rgba(79,195,247,.14); color: var(--ia-cyan); }
.ia-card.no h3 .ic { background: rgba(255,167,38,.14); color: var(--ia-amber); }
.ia-card ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.ia-card li { position: relative; padding-left: 22px; color: var(--text-muted); line-height: 1.55; font-size: 15px; }
.ia-card li::before { content: ""; position: absolute; left: 4px; top: 9px; width: 7px; height: 7px; border-radius: 50%; }
.ia-card.yes li::before { background: var(--ia-cyan); }
.ia-card.no li::before { background: var(--ia-amber); }
.ia-card li strong { color: var(--text); font-weight: 600; }

/* ── Récit défilant (analyse pas à pas) ──────────────────────── */
.ia-story { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 48px; margin-top: 30px; }
.ia-story-visual { position: sticky; top: 90px; align-self: start; }
.ia-story-steps { display: grid; gap: 26vh; padding: 6vh 0 18vh; }
.ia-step { opacity: .35; transform: translateY(8px); transition: opacity .45s ease, transform .45s ease; }
.ia-step.is-on { opacity: 1; transform: none; }
.ia-step .n { font: 700 12px/1 'JetBrains Mono', monospace; color: var(--ia-cyan); letter-spacing: .08em; }
.ia-step h3 { font-size: 22px; margin: 8px 0 10px; }
.ia-step p { color: var(--text-muted); line-height: 1.65; font-size: 16px; margin: 0 0 10px; }
.ia-step .tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.ia-step .tags span { font-size: 12px; padding: 3px 9px; border-radius: 999px; border: 1px solid var(--ia-line); color: #cfe8ff; }
.ia-legend { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 12px; font-size: 12px; color: var(--text-muted); }
.ia-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 6px; vertical-align: -1px; }

/* ── Chiffres du modèle ──────────────────────────────────────── */
.ia-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 28px; }
.ia-stat { background: var(--ia-card); border: 1px solid var(--border); border-radius: 16px; padding: 20px; }
.ia-stat .v { font: 800 34px/1 Inter, system-ui, sans-serif; letter-spacing: -.02em; font-variant-numeric: tabular-nums;
  background: linear-gradient(90deg, #fff, #cfe8ff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.ia-stat .u { font-size: 15px; font-weight: 700; color: var(--ia-cyan); margin-left: 3px; }
.ia-stat .l { margin-top: 10px; color: var(--text-muted); font-size: 14px; line-height: 1.5; }
.ia-note { margin-top: 18px; padding: 16px 18px; border-left: 3px solid var(--ia-violet); background: rgba(124,77,255,.07);
  border-radius: 0 12px 12px 0; color: var(--text-muted); line-height: 1.65; font-size: 15px; max-width: 860px; }

/* ── Chaîne d'entraînement ───────────────────────────────────── */
.ia-pipe { position: relative; margin-top: 34px; display: grid; gap: 14px; }
.ia-pipe::before { content: ""; position: absolute; left: 21px; top: 10px; bottom: 10px; width: 2px;
  background: linear-gradient(var(--ia-cyan), var(--ia-violet), var(--ia-ember)); opacity: .35; }
.ia-pipe .fill { position: absolute; left: 21px; top: 10px; width: 2px; height: 0; background: linear-gradient(var(--ia-cyan), var(--ia-violet), var(--ia-ember));
  box-shadow: 0 0 12px rgba(79,195,247,.6); transition: height .2s linear; }
.ia-pstep { position: relative; display: grid; grid-template-columns: 44px 1fr; gap: 16px; align-items: start; }
.ia-pstep .b { width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; background: #0b1a2e; border: 1px solid var(--ia-line);
  color: var(--ia-cyan); z-index: 1; transition: background .3s, box-shadow .3s, color .3s; }
.ia-pstep.is-on .b { background: var(--ia-cyan); color: #06263a; box-shadow: 0 0 0 6px rgba(79,195,247,.14); }
.ia-pstep .b svg { width: 20px; height: 20px; }
.ia-pstep .c { background: var(--ia-card); border: 1px solid var(--border); border-radius: 16px; padding: 18px 20px; }
.ia-pstep h3 { margin: 0 0 6px; font-size: 17px; }
.ia-pstep p { margin: 0; color: var(--text-muted); line-height: 1.6; font-size: 15px; }
.ia-pstep .src { margin-top: 10px; font-size: 12.5px; color: #9ab6d6; line-height: 1.55; }

/* ── En direct ───────────────────────────────────────────────── */
.ia-live { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 20px; margin-top: 28px; }
.ia-map { background: radial-gradient(80% 80% at 50% 40%, #0d2038, #07111f); border: 1px solid var(--ia-line); border-radius: 20px; padding: 14px; }
.ia-map svg { width: 100%; height: auto; display: block; }
.ia-map .land { fill: rgba(79,195,247,.05); stroke: rgba(79,195,247,.35); stroke-width: 1.2; }
.ia-map .dot { fill: rgba(207,232,255,.18); }
.ia-map .cov { fill: var(--ia-ember); }
.ia-map .halo { fill: none; stroke: var(--ia-ember); stroke-width: 2; transform-box: fill-box; transform-origin: center;
  animation: ia-halo 2.6s ease-out infinite; }
.ia-map .lbl { font: 700 13px Inter, sans-serif; fill: #fff; paint-order: stroke; stroke: #07111f; stroke-width: 4px; }
@keyframes ia-halo { 0% { transform: scale(.6); opacity: .9; } 100% { transform: scale(3); opacity: 0; } }
.ia-map .cap { display: flex; justify-content: space-between; gap: 10px; font-size: 13px; color: var(--text-muted); padding: 4px 6px 0; }
.ia-panel { display: grid; gap: 14px; align-content: start; }
.ia-kv { background: var(--ia-card); border: 1px solid var(--border); border-radius: 16px; padding: 18px 20px; }
.ia-kv .k { font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--text-muted); }
.ia-kv .big { font: 800 26px/1.15 Inter, sans-serif; margin-top: 6px; font-variant-numeric: tabular-nums; }
.ia-kv .sub { font-size: 13px; color: var(--text-muted); margin-top: 4px; }
.ia-meter { margin-top: 12px; display: grid; gap: 10px; }
.ia-meter .row { display: grid; grid-template-columns: 1fr auto; gap: 8px; font-size: 13.5px; }
.ia-meter .row span:last-child { font-family: 'JetBrains Mono', monospace; color: #fff; }
.ia-meter .bar { grid-column: 1 / -1; height: 7px; border-radius: 4px; background: rgba(255,255,255,.07); overflow: hidden; }
.ia-meter .bar i { display: block; height: 100%; width: 0; border-radius: 4px; transition: width 1.4s cubic-bezier(.2,.8,.2,1); }
.ia-meter .bar i.good { background: linear-gradient(90deg, #2e7d32, #69d96b); }
.ia-meter .bar i.warn { background: linear-gradient(90deg, #b71c1c, var(--ia-red)); }
.ia-meter .bar i.cyan { background: linear-gradient(90deg, #1565c0, var(--ia-cyan)); }
.ia-empty { color: var(--text-muted); font-size: 14px; line-height: 1.55; }

/* ── Boucle des avis ─────────────────────────────────────────── */
.ia-loop { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 36px; align-items: center; margin-top: 26px; }
.ia-loop p { color: var(--text-muted); line-height: 1.7; font-size: 16px; }
.ia-orbit { position: relative; width: 300px; height: 300px; margin: 0 auto; }
.ia-orbit .ring { position: absolute; inset: 0; border-radius: 50%; border: 1px dashed rgba(79,195,247,.35); animation: ia-spin 40s linear infinite; }
.ia-orbit .node { position: absolute; width: 104px; padding: 10px 8px; text-align: center; border-radius: 14px; background: #0b1a2e;
  border: 1px solid var(--ia-line); font-size: 12.5px; font-weight: 600; line-height: 1.3; }
.ia-orbit .node small { display: block; font-weight: 400; color: var(--text-muted); margin-top: 3px; font-size: 11px; }
.ia-orbit .n1 { left: 98px; top: -18px; } .ia-orbit .n2 { right: -30px; top: 170px; } .ia-orbit .n3 { left: -30px; top: 170px; }
.ia-orbit .core { position: absolute; left: 50%; top: 50%; width: 92px; height: 92px; margin: -46px 0 0 -46px; border-radius: 50%;
  display: grid; place-items: center; background: radial-gradient(circle at 35% 30%, #9be2ff, var(--ia-cyan) 40%, var(--ia-violet));
  box-shadow: 0 0 40px rgba(79,195,247,.45); color: #06263a; font-weight: 800; }
.ia-orbit .spark { position: absolute; left: 50%; top: 50%; width: 10px; height: 10px; margin: -5px; border-radius: 50%; background: var(--ia-ember);
  box-shadow: 0 0 12px var(--ia-ember); offset-path: circle(150px at 50% 50%); animation: ia-orbit 6s linear infinite; }
@keyframes ia-spin { to { transform: rotate(360deg); } }
@keyframes ia-orbit { from { offset-distance: 0%; } to { offset-distance: 100%; } }
.ia-data { margin-top: 16px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.ia-data div { border: 1px solid var(--border); border-radius: 12px; padding: 12px 14px; font-size: 14px; color: var(--text-muted); line-height: 1.5; }
.ia-data b { color: var(--text); display: block; margin-bottom: 4px; }

/* ── Limites ─────────────────────────────────────────────────── */
.ia-limits { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 26px; }
.ia-limit { display: grid; grid-template-columns: 36px 1fr; gap: 12px; padding: 18px; border-radius: 16px; background: var(--ia-card);
  border: 1px solid var(--border); }
.ia-limit .ic { width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center; background: rgba(255,167,38,.12); color: var(--ia-amber); }
.ia-limit .ic svg { width: 19px; height: 19px; }
.ia-limit h3 { font-size: 16px; margin: 2px 0 6px; }
.ia-limit p { margin: 0; color: var(--text-muted); font-size: 14.5px; line-height: 1.6; }

/* ── FAQ + appel ─────────────────────────────────────────────── */
.ia-faq { margin-top: 22px; display: grid; gap: 10px; max-width: 860px; }
.ia-faq details { background: var(--ia-card); border: 1px solid var(--border); border-radius: 14px; padding: 0 18px; }
.ia-faq summary { cursor: pointer; padding: 16px 0; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.ia-faq summary::-webkit-details-marker { display: none; }
.ia-faq summary::after { content: "+"; color: var(--ia-cyan); font-size: 20px; line-height: 1; transition: transform .2s; }
.ia-faq details[open] summary::after { transform: rotate(45deg); }
.ia-faq details p { margin: 0 0 16px; color: var(--text-muted); line-height: 1.65; }
.ia-cta { margin: 20px 0 80px; padding: 36px; border-radius: 24px; text-align: center; position: relative; overflow: hidden;
  background: linear-gradient(120deg, rgba(79,195,247,.14), rgba(124,77,255,.16) 55%, rgba(255,107,53,.14)); border: 1px solid var(--ia-line); }
.ia-cta h2 { margin: 0 0 10px; font-size: 28px; }
.ia-cta p { color: var(--text-muted); max-width: 620px; margin: 0 auto 20px; line-height: 1.6; }
.ia-cta .btns { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.ia-btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 20px; border-radius: 12px; font-weight: 700; text-decoration: none;
  background: var(--ia-cyan); color: #06263a; transition: transform .15s, box-shadow .15s; }
.ia-btn:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(79,195,247,.35); }
.ia-btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }

/* apparition au défilement */
.ia-reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.ia-reveal.is-in { opacity: 1; transform: none; }

/* lien de menu mis en avant */
.nav a.nav-ia { position: relative; }
.nav a.nav-ia::after { content: ""; position: absolute; right: -8px; top: 2px; width: 6px; height: 6px; border-radius: 50%; background: #4FC3F7;
  box-shadow: 0 0 8px #4FC3F7; }

@media (max-width: 900px) {
  .ia-hero-grid, .ia-duo, .ia-story, .ia-live, .ia-loop, .ia-limits { grid-template-columns: 1fr; }
  .ia-stats { grid-template-columns: 1fr 1fr; }
  .ia-story-visual { position: relative; top: 0; }
  .ia-story-steps { gap: 36px; padding: 10px 0; }
  .ia-step { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  .ia *, .ia *::before, .ia *::after { animation: none !important; transition: none !important; }
  .ia-reveal { opacity: 1; transform: none; }
}