/* Always On — feuille de style
   Couleurs des fibres : code couleur fibre optique français
   (1 rouge, 2 bleu, 3 vert, 4 jaune, 5 violet). */

:root {
  --fond: #F1F3F2;
  --surface: #E5E9E8;
  --encre: #15213A;
  --encre-2: #4C586C;
  --trait: #C7CED1;
  --boitier: #15213A;

  --f-rouge: #D0242B;
  --f-bleu: #1C5ED0;
  --f-vert: #179550;
  --f-jaune: #D7A000;
  --f-violet: #7A3DB8;
  --on: #1FB866;

  --largeur: 72rem;
  --gouttiere: clamp(1rem, 4vw, 2.5rem);
  --col-nom: 10.5rem;
  --col-etat: 9.5rem;

  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fond: #0F192B;
    --surface: #152238;
    --encre: #E7ECF3;
    --encre-2: #9AA6B8;
    --trait: #2A3850;
    --boitier: #E7ECF3;

    --f-rouge: #F0474D;
    --f-bleu: #4D8BF5;
    --f-vert: #2BB86A;
    --f-jaune: #EDBB22;
    --f-violet: #A372E0;
    --on: #36D57E;
  }
}

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--fond);
  color: var(--encre);
  font-family: "Archivo", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 1.0625rem;
  line-height: 1.55;
  font-stretch: 100%;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: .2em;
}
a:hover { text-decoration-thickness: 2px; }

:focus-visible {
  outline: 2px solid var(--f-bleu);
  outline-offset: 3px;
  border-radius: 2px;
}

.contenu {
  width: 100%;
  max-width: calc(var(--largeur) + 2 * var(--gouttiere));
  margin-inline: auto;
  padding-inline: var(--gouttiere);
}

.evitement {
  position: absolute;
  left: var(--gouttiere);
  top: -4rem;
  padding: .5rem .75rem;
  background: var(--encre);
  color: var(--fond);
  z-index: 10;
}
.evitement:focus { top: .75rem; }

/* Voyant « en service » */
.led {
  display: inline-block;
  width: .5em;
  height: .5em;
  border-radius: 50%;
  background: var(--on);
  box-shadow:
    0 0 0 .18em color-mix(in srgb, var(--on) 22%, transparent),
    0 0 .7em color-mix(in srgb, var(--on) 70%, transparent);
}

/* En-tête */
.entete {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: .75rem 2rem;
  padding-block: 1.5rem;
}

.marque {
  font-size: 1.3125rem;
  font-weight: 700;
  font-stretch: 125%;
  letter-spacing: -.01em;
  text-decoration: none;
  white-space: nowrap;
}
.marque .led {
  margin-left: .22em;
  vertical-align: .08em;
}

.nav {
  display: flex;
  gap: 1.5rem;
  font-size: .9375rem;
}
.nav a {
  text-decoration: none;
  color: var(--encre-2);
}
.nav a:hover { color: var(--encre); text-decoration: underline; }

/* Ouverture */
.ouverture {
  padding-top: clamp(3rem, 9vw, 7.5rem);
  padding-bottom: clamp(3.5rem, 8vw, 6rem);
}

h1 {
  max-width: 14em;
  font-size: clamp(2.375rem, 1.1rem + 5.2vw, 5.25rem);
  line-height: 1.02;
  font-weight: 640;
  font-stretch: 116%;
  letter-spacing: -.02em;
  text-wrap: balance;
}

.chapo {
  max-width: 34em;
  margin-top: 1.75rem;
  font-size: clamp(1.0625rem, 1rem + .4vw, 1.3125rem);
  line-height: 1.5;
  color: var(--encre-2);
  text-wrap: pretty;
}

/* Faisceau : une fibre par société */
.faisceau {
  margin-top: clamp(3rem, 7vw, 5.5rem);
}

.brins {
  position: relative;
  display: grid;
  row-gap: .35rem;
}

/* Boîtier d’où partent toutes les fibres */
.brins::before {
  content: "";
  position: absolute;
  top: .1rem;
  bottom: .1rem;
  left: calc(var(--col-nom) + 1.25rem - 5px);
  width: 6px;
  border-radius: 3px;
  background: var(--boitier);
}

.brin {
  display: grid;
  grid-template-columns: var(--col-nom) 1fr var(--col-etat);
  column-gap: 1.25rem;
  align-items: center;
  min-height: 2.5rem;
}

.brin__nom {
  font-weight: 560;
  font-stretch: 108%;
}

.brin__etat {
  font-size: .9375rem;
  color: var(--encre-2);
  font-variant-numeric: tabular-nums;
}
.brin--actif .brin__etat {
  color: var(--encre);
  font-weight: 560;
}
.brin__etat .led { margin-right: .5em; }

.brin__piste {
  position: relative;
  display: block;
  height: 14px;
}

.fibre {
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--fin);
  display: flex;
  align-items: center;
  overflow: hidden;
  animation: tirer 1.15s cubic-bezier(.25, .7, .2, 1) both;
  animation-delay: calc(var(--i) * 110ms + 150ms);
}

.fibre__ame {
  flex: 1;
  height: 3px;
  border-radius: 0 2px 2px 0;
  background: var(--c);
}

/* Connecteur en bout de fibre : la société a été transmise */
.fibre__connecteur {
  position: relative;
  flex: none;
  width: 16px;
  height: 12px;
  margin-left: -1px;
  border-radius: 2px;
  background: var(--c);
}
.fibre__connecteur::after {
  content: "";
  position: absolute;
  top: 4px;
  right: -4px;
  width: 4px;
  height: 4px;
  border-radius: 0 1px 1px 0;
  background: var(--encre-2);
}
.fibre:has(.fibre__connecteur) { padding-right: 4px; }

/* La fibre active porte un signal */
.fibre__signal {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.fibre__signal::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 16%;
  height: 100%;
  background: radial-gradient(closest-side,
    color-mix(in srgb, var(--c) 35%, white) 0,
    color-mix(in srgb, var(--c) 75%, transparent) 40%,
    transparent 100%);
  transform: translateX(-100%);
  animation: signal 3.2s cubic-bezier(.45, 0, .55, 1) 1.5s infinite;
}

.faisceau figcaption {
  margin-top: 1.5rem;
  margin-left: calc(var(--col-nom) + 1.25rem);
  font-size: .8125rem;
  color: var(--encre-2);
}

@keyframes tirer {
  from { clip-path: inset(0 100% 0 0); }
  to { clip-path: inset(0 0 0 0); }
}

@keyframes signal {
  from { transform: translateX(-100%); }
  to { transform: translateX(625%); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .fibre { animation: none; }
  .fibre__signal { display: none; }
}

/* Titres de section */
h2 {
  font-size: clamp(1.5rem, 1.2rem + 1vw, 1.875rem);
  line-height: 1.15;
  font-weight: 620;
  font-stretch: 114%;
  letter-spacing: -.01em;
}

h4 {
  font-size: 1rem;
  font-weight: 620;
  font-stretch: 108%;
  margin-bottom: .75rem;
}

/* Portefeuille */
.portefeuille {
  padding-block: clamp(3.5rem, 8vw, 6.5rem);
  background: var(--surface);
}

.societe {
  position: relative;
  margin-top: 2.25rem;
  padding-left: clamp(1.25rem, 3vw, 2.25rem);
  max-width: 60rem;
}
.societe::before {
  content: "";
  position: absolute;
  top: .55rem;
  bottom: .25rem;
  left: 0;
  width: 3px;
  border-radius: 2px;
  background: var(--f-vert);
}

.societe h3 {
  font-size: clamp(2.25rem, 1.4rem + 3.4vw, 3.75rem);
  line-height: 1.02;
  font-weight: 660;
  font-stretch: 118%;
  letter-spacing: -.02em;
}

.societe__resume {
  max-width: 38em;
  margin-top: 1.25rem;
  font-size: clamp(1.0625rem, 1rem + .3vw, 1.25rem);
  line-height: 1.55;
  text-wrap: pretty;
}

.societe__lien-holding {
  margin-top: .75rem;
  color: var(--encre-2);
}

.societe__colonnes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 2rem clamp(2rem, 5vw, 4rem);
  margin-top: 2.5rem;
}

.liste li {
  padding-block: .55rem;
  border-top: 1px solid var(--trait);
}
.liste li:last-child { border-bottom: 1px solid var(--trait); }

.societe__liens {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.75rem;
  margin-top: 2.25rem;
  font-weight: 560;
}

/* Parcours */
.parcours {
  padding-block: clamp(3.5rem, 8vw, 6.5rem);
}

.parcours__intro {
  max-width: 34em;
  margin-top: .75rem;
  color: var(--encre-2);
}

.jalons {
  margin-top: 2.5rem;
  border-top: 1px solid var(--trait);
}

.jalon {
  display: grid;
  grid-template-columns: 7rem 1fr;
  column-gap: 1.25rem;
  padding-block: 1.35rem;
  border-bottom: 1px solid var(--trait);
}

.jalon__annee {
  font-size: 1.3125rem;
  line-height: 1.3;
  font-weight: 600;
  font-stretch: 120%;
  font-variant-numeric: tabular-nums;
}

.jalon__texte {
  display: grid;
  grid-template-columns: minmax(12rem, 18rem) 1fr;
  column-gap: 1.25rem;
  row-gap: .25rem;
  align-items: baseline;
}

.jalon h3 {
  display: flex;
  align-items: center;
  gap: .65rem;
  font-size: 1.3125rem;
  line-height: 1.3;
  font-weight: 600;
  font-stretch: 110%;
}

.jalon p {
  max-width: 34em;
  color: var(--encre-2);
}

/* Bout de fibre terminé par son connecteur, repris du faisceau */
.pastille {
  position: relative;
  flex: none;
  width: 1.75rem;
  height: 10px;
  background: linear-gradient(var(--c), var(--c)) left center / 100% 3px no-repeat;
}
.pastille::after {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  width: 12px;
  height: 10px;
  border-radius: 2px;
  background: var(--c);
}

/* Le boîtier dont partent les fibres : la holding */
.pastille--boitier { background: none; }
.pastille--boitier::after {
  right: 6px;
  top: -3px;
  width: 6px;
  height: 16px;
  border-radius: 3px;
  background: var(--boitier);
}

/* Holding et contact */
.holding {
  padding-block: clamp(3.5rem, 8vw, 6rem);
  background: var(--surface);
}

.holding__grille {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  gap: 3rem clamp(2rem, 6vw, 6rem);
}

.fiche {
  margin-top: 1.5rem;
}
.fiche div {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  column-gap: 1rem;
  padding-block: .6rem;
  border-top: 1px solid var(--trait);
}
.fiche div:last-child { border-bottom: 1px solid var(--trait); }
.fiche dt { color: var(--encre-2); }
.fiche dd { font-variant-numeric: tabular-nums; }

.holding__contact p {
  max-width: 28em;
  margin-top: 1.5rem;
  color: var(--encre-2);
}

.courriel {
  display: inline-block;
  margin-top: 1rem;
  font-size: clamp(1.25rem, 1rem + 1.2vw, 1.875rem);
  font-weight: 600;
  font-stretch: 112%;
  letter-spacing: -.01em;
  overflow-wrap: anywhere;
}

/* Pied de page */
.pied {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: .5rem 2rem;
  padding-block: 2rem 2.5rem;
  font-size: .875rem;
  color: var(--encre-2);
}

/* Page de texte (mentions légales) */
.texte {
  max-width: 40rem;
  padding-block: clamp(2.5rem, 7vw, 5rem);
}
.texte h1 {
  font-size: clamp(2rem, 1.4rem + 2.6vw, 3rem);
}
.texte h2 {
  margin-top: 2.5rem;
  font-size: 1.25rem;
}
.texte p {
  margin-top: .75rem;
}
.texte .note {
  color: var(--encre-2);
}

/* Petits écrans */
@media (max-width: 44rem) {
  .brins { row-gap: 1rem; }
  .brins::before { display: none; }

  .brin {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "nom etat"
      "piste piste";
    row-gap: .3rem;
    min-height: 0;
  }
  .brin__nom { grid-area: nom; }
  .brin__etat { grid-area: etat; }
  .brin__piste {
    grid-area: piste;
    border-left: 4px solid var(--boitier);
    border-radius: 2px;
  }

  .faisceau figcaption { margin-left: 0; }

  .jalon {
    grid-template-columns: 4.25rem 1fr;
    column-gap: 1rem;
  }
  .jalon__texte { grid-template-columns: 1fr; }
}