/* ==================================================================
   Simulateur « le voyage d'un paquet » — TCP / IP / DNS
   Autonome : ne dépend d'aucune autre feuille.
   ================================================================== */

.simtcp {
  --sim-encre:      #1b1d1f;
  --sim-douce:      #5b6068;
  --sim-filet:      #dfe3e7;
  --sim-fond:       #f7f8f9;
  --sim-blanc:      #ffffff;

  --sim-routeur:    #0e7c76;
  --sim-routeur-cl: #d9eceb;
  --sim-pc:         #2b5fb4;
  --sim-pc-cl:      #e2ebf9;
  --sim-switch:     #434b56;
  --sim-serveur:    #9a5b12;
  --sim-serveur-cl: #fbeedb;
  --sim-panne:      #c8324b;

  --sim-p1:         #5641c9;
  --sim-p2:         #b3238e;
  --sim-p3:         #1f6f8b;
  --sim-ack:        #0f7a4d;
  --sim-dns:        #9a5b12;

  --sim-titre: 'Montserrat', system-ui, -apple-system, 'Segoe UI', sans-serif;

  font-family: var(--sim-titre);
  color: var(--sim-encre);
  font-size: 15px;
  line-height: 1.5;
  border: 1px solid var(--sim-filet);
  border-radius: 10px;
  background: var(--sim-blanc);
  margin: 2em 0;
  box-shadow: 0 1px 3px rgba(0,0,0,.05);
}

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

/* ---------- Barre de narration ---------- */

.simtcp__entete {
  position: sticky;
  top: 0;
  z-index: 3;
  flex: 0 0 auto;
  border-radius: 9px 9px 0 0;
  background: var(--sim-blanc);
  box-shadow: 0 2px 6px rgba(0,0,0,.05);
}

.simtcp__narration {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 6px 14px;
  padding: 13px 18px;
  background: var(--sim-fond);
  border-bottom: 1px solid var(--sim-filet);
  border-radius: 9px 9px 0 0;
  min-height: 74px;
}

.simtcp__phase {
  flex: 0 0 auto;
  display: inline-block;
  padding: 3px 11px;
  border-radius: 20px;
  background: var(--sim-phase, var(--sim-routeur));
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
  white-space: nowrap;
  margin-top: 2px;
}

.simtcp__texte { flex: 1 1 260px; min-width: 0; }
.simtcp__titre { font-weight: 700; font-size: 15px; margin: 0 0 2px 0; }
.simtcp__phrase { margin: 0; font-size: 14px; color: #33383d; }
.simtcp__note {
  display: none;
  margin: 6px 0 0 0;
  font-size: 13px;
  font-weight: 600;
  color: #8a5a00;
}
.simtcp__note.is-on { display: block; }

.simtcp__compteur {
  flex: 0 0 auto;
  font-size: 12px;
  font-weight: 600;
  color: var(--sim-douce);
  white-space: nowrap;
  margin-top: 3px;
}

/* ---------- Alerte ---------- */

.simtcp__alerte {
  display: none;
  padding: 10px 18px;
  background: #fdecef;
  border-bottom: 1px solid #f3c6cf;
  color: #8d1f33;
  font-size: 13.5px;
  font-weight: 600;
}
.simtcp__alerte.is-on { display: block; }

/* ---------- Commandes ---------- */

.simtcp__commandes {
  flex: 0 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  padding: 11px 18px;
  border-bottom: 1px solid var(--sim-filet);
}

.simtcp__groupe { display: flex; align-items: center; gap: 6px; }

.simtcp button {
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  color: var(--sim-encre);
  background: var(--sim-blanc);
  border: 1px solid #ccd2d8;
  border-radius: 6px;
  padding: 6px 12px;
  cursor: pointer;
  transition: background .12s, border-color .12s, color .12s;
  white-space: nowrap;
}
.simtcp button:hover:not(:disabled) { background: var(--sim-fond); border-color: #aab3bc; }
.simtcp button:disabled { opacity: .4; cursor: default; }
.simtcp button:focus-visible { outline: 2px solid var(--sim-routeur); outline-offset: 2px; }

.simtcp button.is-primaire {
  background: var(--sim-routeur);
  border-color: var(--sim-routeur);
  color: #fff;
  min-width: 108px;
}
.simtcp button.is-primaire:hover:not(:disabled) { background: #0a615c; border-color: #0a615c; }

.simtcp__sep { width: 1px; align-self: stretch; background: var(--sim-filet); }

.simtcp label { font-size: 12.5px; font-weight: 600; color: var(--sim-douce); }

.simtcp input[type="range"] { width: 108px; accent-color: var(--sim-routeur); }

.simtcp input[type="text"] {
  font-family: inherit;
  font-size: 13px;
  padding: 5px 9px;
  border: 1px solid #ccd2d8;
  border-radius: 6px;
  width: 150px;
  color: var(--sim-encre);
}
.simtcp input[type="text"]:focus { outline: 2px solid var(--sim-routeur); outline-offset: 1px; border-color: var(--sim-routeur); }

.simtcp__vitesseVal { font-size: 12.5px; font-weight: 700; min-width: 30px; }

/* ---------- Scène ---------- */

.simtcp__scene {
  display: grid;
  grid-template-columns: 196px minmax(0,1fr) 196px;
  gap: 0;
  align-items: stretch;
}

.simtcp__panneau {
  padding: 14px 12px;
  background: var(--sim-fond);
  font-size: 12.5px;
}
.simtcp__panneau--a { border-right: 1px solid var(--sim-filet); }
.simtcp__panneau--b { border-left: 1px solid var(--sim-filet); }

.simtcp__panneauTitre {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--sim-douce);
  margin: 0 0 3px 0;
}
.simtcp__ip {
  font-size: 12px;
  font-weight: 700;
  color: var(--sim-pc);
  margin: 0 0 12px 0;
  font-variant-numeric: tabular-nums;
}

.simtcp__sousTitre {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--sim-douce);
  margin: 14px 0 6px 0;
}
.simtcp__sousTitre:first-of-type { margin-top: 0; }

.simtcp__msg {
  padding: 7px 10px;
  background: var(--sim-blanc);
  border: 1px solid var(--sim-filet);
  border-left: 3px solid var(--sim-pc);
  border-radius: 0 5px 5px 0;
  font-size: 13px;
  font-weight: 600;
  word-break: break-word;
}
.simtcp__msg.is-vide { color: #9aa1a9; font-weight: 400; font-style: italic; }

.simtcp__chips { display: flex; flex-direction: column; gap: 5px; }

.simtcp__chip {
  display: flex;
  align-items: stretch;
  border-radius: 5px;
  overflow: hidden;
  border: 1px solid var(--chip, var(--sim-p1));
  background: var(--sim-blanc);
  opacity: 1;
  transition: opacity .25s, transform .25s;
}
.simtcp__chip.is-attente { opacity: .32; }

.simtcp__chipNum {
  flex: 0 0 auto;
  padding: 3px 7px;
  background: var(--chip, var(--sim-p1));
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
}
.simtcp__chipTxt {
  flex: 1 1 auto;
  padding: 3px 8px;
  font-size: 12.5px;
  font-weight: 600;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
/* Enveloppe IP autour du segment TCP */

.simtcp__dgm { margin-bottom: 6px; }

.simtcp__dgm.is-ip {
  padding: 5px;
  border: 1.5px solid var(--sim-pc);
  border-radius: 7px;
  background: #eef4fd;
}

.simtcp__ipEntete {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 4px;
  font-size: 9.5px;
  font-weight: 700;
  color: var(--sim-pc);
  font-variant-numeric: tabular-nums;
}

.simtcp__ipAdr {
  display: flex;
  flex-direction: column;
  line-height: 1.35;
  white-space: pre;
  font-family: ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
  font-size: 9px;
}

.simtcp__ipTag {
  flex: 0 0 auto;
  padding: 0 5px;
  border-radius: 3px;
  background: var(--sim-pc);
  color: #fff;
  letter-spacing: .04em;
}

@keyframes simtcpEncaps {
  from { transform: scale(.93); border-color: transparent; background: #fff; }
  60%  { transform: scale(1.03); }
  to   { transform: scale(1); }
}
@keyframes simtcpApparait {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: none; }
}

.simtcp__dgm.is-anime { animation: simtcpEncaps .55s ease-out both; }
.simtcp__dgm.is-anime .simtcp__ipEntete { animation: simtcpApparait .45s ease-out .12s both; }

.simtcp__resultat {
  margin-top: 12px;
  padding: 8px 10px;
  background: #e8f5ef;
  border: 1px solid #b9dfcd;
  border-radius: 5px;
  font-size: 13px;
  font-weight: 700;
  color: #0b5c3b;
  word-break: break-word;
}

/* ---------- Mise en lumière (étapes sans échange de paquet) ---------- */

@keyframes simtcpPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(14,124,118,0); }
  45%      { box-shadow: 0 0 0 7px rgba(14,124,118,.28); }
}

.simtcp .is-focus {
  border-radius: 7px;
  animation: simtcpPulse 1.15s ease-in-out 3;
}

@keyframes simtcpHalo {
  0%, 100% { opacity: .25; }
  45%      { opacity: 1; }
}

.simtcp .noeud.is-focus .halo { opacity: .9; animation: simtcpHalo 1.15s ease-in-out 3; }
.simtcp .noeud.is-focus { animation: none; }

/* ---------- Carte ---------- */

.simtcp__carte { position: relative; background: var(--sim-blanc); display: flex; flex-direction: column; justify-content: center; }
.simtcp__svg { display: block; width: 100%; height: auto; }

.simtcp__aide {
  margin: 0;
  padding: 7px 14px 9px 14px;
  font-size: 12px;
  color: var(--sim-douce);
  text-align: center;
  border-top: 1px dashed var(--sim-filet);
}

/* éléments SVG */

.simtcp .lien { stroke: #c3cbd3; stroke-width: 2.8; stroke-linecap: round; }
.simtcp .lien.is-actif { stroke: var(--sim-routeur); stroke-width: 4.2; }
.simtcp .lien.is-coupe { stroke: #e6d0d4; stroke-dasharray: 5 5; }

.simtcp .noeud { cursor: default; }
.simtcp .noeud--router { cursor: pointer; }
.simtcp .noeud--router:hover .boitier { filter: brightness(1.12); }
.simtcp .noeud--router:focus-visible { outline: none; }
.simtcp .noeud--router:focus-visible .boitier { stroke: #111; stroke-width: 2.5; }

.simtcp .etiquette {
  font-size: 15px;
  font-weight: 700;
  fill: var(--sim-encre);
  text-anchor: middle;
}
.simtcp .sousEtiquette {
  font-size: 12px;
  font-weight: 600;
  fill: var(--sim-douce);
  text-anchor: middle;
}
.simtcp .adresse {
  font-size: 12px;
  font-weight: 700;
  fill: var(--sim-pc);
  text-anchor: middle;
  font-variant-numeric: tabular-nums;
}

.simtcp .noeud.is-panne .boitier { fill: #f3d3d9; stroke: var(--sim-panne); }
.simtcp .noeud.is-panne .glyphe { stroke: var(--sim-panne); fill: var(--sim-panne); }
.simtcp .noeud.is-panne .etiquette { fill: var(--sim-panne); }

.simtcp .croix { stroke: var(--sim-panne); stroke-width: 3.4; stroke-linecap: round; }

.simtcp .halo {
  fill: none;
  stroke: var(--sim-routeur);
  stroke-width: 3;
  opacity: 0;
  transition: opacity .2s;
}
.simtcp .noeud.is-actif .halo { opacity: .85; }

.simtcp .paquet { pointer-events: none; }
.simtcp .paquet rect { stroke-width: 1.5; }
.simtcp .paquet text { font-size: 13px; font-weight: 700; fill: #fff; text-anchor: middle; }
.simtcp .paquet.is-perdu { opacity: .45; }

/* ---------- Légende ---------- */

.simtcp__legende {
  border-radius: 0 0 9px 9px;
  flex: 0 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  padding: 10px 18px;
  border-top: 1px solid var(--sim-filet);
  background: var(--sim-fond);
  font-size: 12px;
  color: var(--sim-douce);
}
.simtcp__legende span { display: inline-flex; align-items: center; gap: 7px; }
.simtcp__pastille { width: 12px; height: 12px; border-radius: 3px; display: inline-block; }

/* ---------- Responsive ---------- */

/* largeur pilotée par un ResizeObserver : la classe is-etroit est posée
   en JS selon la largeur réelle du composant, pas celle de la fenêtre */
.simtcp.is-etroit .simtcp__scene { grid-template-columns: 1fr; }
.simtcp.is-etroit .simtcp__panneau--a,
.simtcp.is-etroit .simtcp__panneau--b {
  border: none;
  border-top: 1px solid var(--sim-filet);
}
.simtcp.is-etroit .simtcp__panneau {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 16px;
}
.simtcp.is-etroit .simtcp__panneauTitre,
.simtcp.is-etroit .simtcp__ip { grid-column: 1 / -1; }

/* ---------- Plein écran ---------- */

.simtcp.is-plein {
  position: fixed;
  inset: 0;
  z-index: 9000;
  margin: 0;
  border: none;
  border-radius: 0;
  overflow: hidden;
  background: var(--sim-blanc);
  display: flex;
  flex-direction: column;
}
.simtcp.is-plein .simtcp__entete { border-radius: 0; position: static; }
.simtcp.is-plein .simtcp__narration { border-radius: 0; }
.simtcp.is-plein .simtcp__legende { border-radius: 0; }
.simtcp.is-plein .simtcp__scene {
  flex: 1 1 auto;
  min-height: 0;
  align-items: stretch;
  overflow: auto;
}
.simtcp.is-plein .simtcp__carte { display: flex; flex-direction: column; justify-content: center; min-height: 0; }
.simtcp.is-plein .simtcp__svg { flex: 1 1 auto; min-height: 0; height: 100%; }
.simtcp.is-plein .simtcp__panneau { overflow: auto; }

.simtcp.is-minuscule { font-size: 14px; }
.simtcp.is-minuscule .simtcp__panneau { grid-template-columns: 1fr; }
.simtcp.is-minuscule button.is-primaire { min-width: 0; }

/* ---------- Impression ---------- */

@media print {
  .simtcp__commandes, .simtcp__aide, .simtcp__alerte { display: none !important; }
  .simtcp { break-inside: avoid; }
}

/* ==================================================================
   Page autonome du simulateur : pas d'en-tête de site, pas de bandeau,
   le simulateur occupe toute la largeur disponible.
   ================================================================== */

.page-simulateur .conteneur-simulateur {
  max-width: 1560px;
  width: 100%;
  margin: 0 auto;
  padding: 16px 16px 4px 16px;
  box-sizing: border-box;
}

.page-simulateur .simtcp { margin: 0; }

.page-simulateur .retour-seance {
  margin: 12px 0 18px 0;
  font-family: 'Montserrat', system-ui, sans-serif;
  font-size: 0.85rem;
}
.page-simulateur .retour-seance a { color: #0e7c76; text-decoration: none; }
.page-simulateur .retour-seance a:hover { text-decoration: underline; }