/* ==========================================================================
   CTR v2 - Hero, bandeau defilant, manifeste, index des metiers, chapitres.
   ========================================================================== */

/* -------------------------------------------------------------------- hero */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex; flex-direction: column; justify-content: flex-end;
  padding-top: calc(var(--bar-h) + var(--nav-h));
  overflow: hidden;
}
.hero__canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero__inner { position: relative; padding-bottom: clamp(48px, 11vh, 128px); }
.hero__title { max-width: 11.5em; }
.hero__kicker { display: block; margin-bottom: clamp(18px, 2.6vh, 30px); color: var(--fog); font-weight: 400; max-width: 62em; }
.hero__title .line { display: block; overflow: hidden; padding-bottom: .08em; margin-bottom: -.08em; }
.hero__title .line > span { display: block; }
.ignite { color: var(--gold); font-style: normal; }
.hero__lead { margin-top: clamp(20px, 3vh, 32px); max-width: 40ch; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: clamp(28px, 4vh, 40px); }

/* ------------------------------------------------------ bandeau defilant */
.marquee {
  position: relative;
  padding-block: clamp(24px, 3.5vw, 48px);
  border-block: 1px solid var(--surface);
  overflow: hidden;
  user-select: none;
}
.marquee__track { display: flex; width: max-content; will-change: transform; }
.marquee__group { display: flex; align-items: center; flex: none; }
.marquee__word {
  font-weight: 300;
  font-size: clamp(3.4rem, 10.5vw, 9.6rem);
  line-height: 1.02;
  letter-spacing: -.045em;
  padding-inline: .3em;
  white-space: nowrap;
  transition: opacity .5s var(--e-out);
}
.marquee__sep { flex: none; width: clamp(10px, 1.1vw, 16px); aspect-ratio: 1; background: var(--gold); }
.marquee:hover .marquee__word { opacity: .22; }
.marquee:hover .marquee__word:hover { opacity: 1; }

/* ----------------------------------------------------------------- manifeste */
.manifesto { padding-block: var(--section); }
.manifesto__text {
  font-weight: 300;
  font-size: clamp(1.85rem, 4.1vw, 3.6rem);
  line-height: 1.12;
  letter-spacing: -.028em;
  max-width: 21em;
}
.manifesto__sign { display: flex; flex-wrap: wrap; gap: 12px 40px; margin-top: clamp(32px, 5vw, 56px); color: var(--steel); }

/* ------------------------------------------------------- index des metiers */
.metiers { padding-bottom: var(--section); }
.sec-head { margin-bottom: clamp(36px, 5vw, 64px); }
.sec-head .t-h2 { max-width: 14em; }
.sec-head .t-lead { margin-top: 20px; }

.mlist { border-top: 1px solid var(--teal); }
.mrow {
  position: relative;
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) auto 44px;
  align-items: center;
  gap: 24px;
  padding: clamp(20px, 2.8vw, 34px) 14px;
  border-bottom: 1px solid var(--teal);
  overflow: hidden;
  isolation: isolate;
  transition: color .5s var(--e-out);
}
.mrow::before {
  content: "";
  position: absolute; inset: 0; z-index: -1;
  background: var(--blue);
  transform: scaleY(0);
  transform-origin: 50% var(--from, 100%);
  transition: transform .6s var(--e-out);
}
.mrow:hover, .mrow:focus-visible { color: var(--bg); }
.mrow:hover::before, .mrow:focus-visible::before { transform: scaleY(1); }
.mrow__num { color: var(--steel); transition: color .4s; }
.mrow__title {
  font-weight: 300;
  font-size: clamp(2rem, 5.2vw, 4.5rem);
  line-height: 1;
  letter-spacing: -.04em;
  transition: transform .8s var(--e-out);
}
.mrow__tags { color: var(--fog); text-align: right; transition: color .4s; }
.mrow__arrow { width: 36px; height: 36px; justify-self: end; transition: transform .8s var(--e-out); }
.mrow:hover .mrow__num, .mrow:hover .mrow__tags,
.mrow:focus-visible .mrow__num, .mrow:focus-visible .mrow__tags { color: var(--bg); }
.mrow:hover .mrow__title, .mrow:focus-visible .mrow__title { transform: translateX(clamp(8px, 1.8vw, 28px)); }
.mrow:hover .mrow__arrow, .mrow:focus-visible .mrow__arrow { transform: rotate(90deg); }

.mpreview {
  position: fixed; left: 0; top: 0; z-index: 30;
  width: clamp(240px, 23vw, 360px); aspect-ratio: 4 / 3;
  overflow: hidden; pointer-events: none;
  opacity: 0; scale: .5;
  transition: opacity .35s var(--e-out), scale .6s var(--e-out);
}
.mpreview.is-on { opacity: 1; scale: 1; }
.mpreview__img {
  position: absolute; inset: 0;
  background: var(--surface) center / cover no-repeat;
  filter: grayscale(1) contrast(1.15) brightness(.85);
  clip-path: inset(100% 0 0 0);
  transition: clip-path .7s var(--e-out);
}
.mpreview__img.is-on { clip-path: inset(0 0 0 0); }

@media (hover: none), (max-width: 900px) {
  .mpreview { display: none; }
}
@media (max-width: 760px) {
  .mrow { grid-template-columns: 40px minmax(0, 1fr) 28px; gap: 6px 14px; padding-inline: 4px; }
  .mrow__tags { grid-column: 2; grid-row: 2; text-align: left; font-size: 11px; }
  .mrow__arrow { grid-column: 3; grid-row: 1; width: 24px; height: 24px; }
}

/* ============================================================ chapitres */
.chapter { position: relative; border-top: 1px solid var(--surface); background: var(--bg); }
.chapter__pin { position: relative; overflow: hidden; }
.chapter__head {
  display: flex; justify-content: space-between; align-items: baseline; gap: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--teal);
}
.chapter__num { color: var(--blue); }
.chapter__kicker { font-weight: 400; text-align: right; }
.chapter__title { margin-top: clamp(20px, 3vh, 36px); max-width: 13em; font-size: clamp(2rem, 3.8vw, 3.4rem); }
.chapter__text { margin-top: 18px; }
.chapter__list { display: grid; gap: 10px; margin-top: 24px; color: var(--fog); }
.chapter__list li { display: flex; align-items: baseline; gap: 14px; }
.chapter__list li::before { content: ""; width: 14px; height: 1px; background: var(--steel); flex: none; transform: translateY(-4px); }
.chapter__sim { color: var(--steel); }

/* Mise en page commune en desktop epingle */
.pin-on .chapter__pin { height: 100dvh; min-height: 640px; }

/* ------------------------------------------------ 01 fibre : reflectometrie */
.ch-fibre .chapter__pin {
  display: grid; grid-template-rows: auto minmax(0, 1fr);
  padding-block: calc(var(--nav-h) + 20px) clamp(20px, 4vh, 44px);
}
.ch-fibre__top {
  display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
  gap: 20px clamp(32px, 6vw, 96px); align-items: end;
}
.ch-fibre__top .chapter__head { grid-column: 1 / -1; }
.ch-fibre__top .chapter__title { margin-top: 0; }

.otdr { position: relative; margin-top: clamp(20px, 4vh, 44px); min-height: 280px; }
.otdr__plot { position: absolute; inset: 22px 0 58px 52px; }
.otdr__svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.otdr__grid line { stroke: var(--surface); stroke-width: 1; vector-effect: non-scaling-stroke; }
.otdr__ghost { fill: none; stroke: var(--teal); stroke-width: 1; stroke-dasharray: 2 5; vector-effect: non-scaling-stroke; }
.otdr__trace { fill: none; stroke: var(--paper); stroke-width: 1.5; stroke-linejoin: round; vector-effect: non-scaling-stroke; }
.otdr__y, .otdr__x { position: absolute; font-family: var(--f-mono); font-size: 11px; color: var(--steel); }
.otdr__y { left: -52px; top: 0; bottom: 0; width: 44px; }
.otdr__y span { position: absolute; right: 0; transform: translateY(-50%); }
.otdr__x { left: 0; right: 0; bottom: -24px; height: 16px; }
.otdr__x span { position: absolute; transform: translateX(-50%); }
.otdr__event {
  position: absolute; top: -22px; bottom: 0; width: 0;
  border-left: 1px dashed var(--teal);
  opacity: .25; transition: opacity .5s var(--e-out);
}
.otdr__event span {
  position: absolute; top: 0; left: 8px;
  font-family: var(--f-mono); font-size: 11px; line-height: 1.3;
  white-space: nowrap; color: var(--steel);
}
.otdr__event span b { display: block; font-weight: 400; color: var(--paper); text-transform: uppercase; }
.otdr__event.is-on { opacity: 1; }
.otdr__event i, .otdr__seg i { font-style: normal; }
.otdr__event--end span { left: auto; right: 8px; text-align: right; }
.otdr__head { position: absolute; width: 9px; height: 9px; margin: -4.5px 0 0 -4.5px; background: var(--blue); }
.otdr__read {
  position: absolute; transform: translate(14px, -135%);
  padding: 5px 8px; border: 1px solid var(--teal); background: var(--bg);
  font-family: var(--f-mono); font-size: 11px; white-space: nowrap;
}
.otdr__segs { position: absolute; left: 0; right: 0; bottom: -58px; height: 20px; }
.otdr__seg {
  position: absolute; top: 0; height: 20px;
  border-top: 1px solid var(--teal);
  font-family: var(--f-mono); font-size: 11px; color: var(--steel); text-transform: uppercase;
  padding-top: 5px; text-align: center; white-space: nowrap;
}

/* ------------------------------------------- 02 datacenter : allee froide */
.ch-dc .chapter__pin { display: grid; align-items: center; }
.ch-dc__visual { position: absolute; inset: 0; }
.ch-dc__visual canvas { width: 100%; height: 100%; }
.ch-dc__scrim {
  position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(90deg, var(--bg) 0%, rgba(4, 16, 20, .9) 30%, rgba(4, 16, 20, 0) 64%);
}
.ch-dc__content { position: relative; padding-block: calc(var(--nav-h) + 24px) 48px; }
.ch-dc__col { max-width: 540px; }
.dc-steps { position: relative; margin-top: 28px; }
.dc-step + .dc-step { margin-top: 28px; }
.dc-step h3 { display: flex; align-items: baseline; gap: 14px; }
.dc-step h3 .mono { color: var(--blue); }
.dc-step p { margin-top: 10px; color: var(--fog); max-width: 46ch; }
.dc-dots { display: none; }

.pin-on .dc-steps { min-height: 150px; }
.pin-on .dc-step { position: absolute; inset: 0 0 auto 0; margin: 0; opacity: 0; visibility: hidden; }
.pin-on .dc-step.is-on { opacity: 1; visibility: visible; }
.pin-on .dc-dots { display: flex; gap: 22px; margin-top: 32px; }
.dc-dots span { position: relative; padding-bottom: 8px; color: var(--steel); transition: color .4s; }
.dc-dots span::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: var(--paper); transform: scaleX(0); transform-origin: 0 50%; transition: transform .6s var(--e-out);
}
.dc-dots span.is-on { color: var(--paper); }
.dc-dots span.is-on::after { transform: scaleX(1); }

/* ---------------------------------------------------- 03 IRVE : recharge */
.ch-irve .chapter__pin {
  display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  align-items: center; gap: 40px clamp(40px, 7vw, 112px);
  padding-block: calc(var(--nav-h) + 24px) 48px;
}
.charge__top { display: flex; justify-content: space-between; gap: 16px; }
.charge__state { color: var(--paper); }
.charge__pct {
  margin-top: 12px;
  font-weight: 200;
  font-size: clamp(6rem, 18vw, 16.5rem);
  line-height: .8;
  letter-spacing: -.065em;
  font-variant-numeric: tabular-nums;
  transition: color .6s var(--e-out);
}
.charge__pct small { font-size: .3em; letter-spacing: -.02em; vertical-align: top; margin-left: .08em; }
.charge.is-full .charge__pct { color: var(--gold); }
.charge__bar { display: grid; grid-template-columns: repeat(24, minmax(0, 1fr)); gap: 4px; height: clamp(40px, 6vh, 60px); margin-top: 32px; }
.charge__bar i { background: var(--teal); transition: background-color .25s; }
.charge__bar i.is-on { background: var(--blue); }
.charge__bar i.is-head { animation: seg-blink .9s steps(2, jump-none) infinite; }
@keyframes seg-blink { 50% { background: var(--teal); } }
.charge__stats {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px; margin-top: 28px;
  background: var(--teal); border: 1px solid var(--teal);
}
.charge__stats div { background: var(--bg); padding: 12px 14px; }
.charge__stats dt { color: var(--steel); }
.charge__stats dd { text-transform: none; margin-top: 6px; font-family: var(--f-mono); font-size: 17px; font-variant-numeric: tabular-nums; }

/* ------------------------------------------------- 04 eclairage : ville */
.ch-light .chapter__pin { display: grid; align-items: end; }
.ch-light__visual { position: absolute; inset: 0; }
.ch-light__visual canvas { width: 100%; height: 100%; }
.ch-light__scrim {
  position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(0deg, var(--bg) 0%, rgba(4, 16, 20, .82) 30%, rgba(4, 16, 20, 0) 62%);
}
.ch-light__content {
  position: relative;
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(260px, 340px);
  gap: 32px clamp(32px, 6vw, 96px); align-items: end;
  padding-block: calc(var(--nav-h) + 24px) clamp(32px, 6vh, 64px);
}
.ch-light__content .chapter__head { grid-column: 1 / -1; }
.lamp-read { display: grid; gap: 1px; background: var(--teal); border: 1px solid var(--teal); }
.lamp-read div { display: flex; justify-content: space-between; gap: 16px; background: var(--bg); padding: 12px 14px; }
.lamp-read dt { color: var(--steel); }
.lamp-read dd { text-transform: none; font-family: var(--f-mono); font-size: 15px; font-variant-numeric: tabular-nums; }

/* ------------------------------------------------ chapitres : mobile */
@media (max-width: 899px) {
  .ch-fibre__top, .ch-irve .chapter__pin, .ch-light__content { grid-template-columns: minmax(0, 1fr); }
  .ch-fibre .chapter__pin, .ch-irve .chapter__pin { padding-block: 72px 56px; }
  .otdr { min-height: 300px; margin-top: 40px; }
  .otdr__event span { font-size: 10px; }
  .otdr__read { display: none; }
}
@media (max-width: 599px) {
  .otdr__event--minor span, .otdr__event i, .otdr__seg i { display: none; }
}
@media (max-width: 899px) {

  .ch-dc .chapter__pin, .ch-light .chapter__pin { display: flex; flex-direction: column; }
  .ch-dc__visual, .ch-light__visual { position: relative; inset: auto; height: 62vh; min-height: 360px; order: 2; }
  .ch-dc__scrim { background: linear-gradient(180deg, var(--bg) 0%, rgba(4, 16, 20, 0) 30%); }
  .ch-light__scrim { background: linear-gradient(180deg, var(--bg) 0%, rgba(4, 16, 20, 0) 30%); }
  .ch-dc__content, .ch-light__content { order: 1; padding-block: 72px 32px; }
  .charge__stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ch-irve .charge { order: 2; }
}