:root {
  --vert: #075e54;
  --vert-clair: #25d366;
  --fond-chat: #efeae2;
  --bulle-client: #d9fdd3;
  --bulle-bot: #ffffff;
  --texte: #111b21;
  --texte-doux: #667781;
  --bord: #e2e2e2;
  --page: #f0f2f5;
  --panneau: #ffffff;
  --lien: #027eb5;
  --ok: #1b7f3b;
  --ko: #b42318;
  font-family: Arial, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fond-chat: #0b141a;
    --bulle-client: #005c4b;
    --bulle-bot: #202c33;
    --texte: #e9edef;
    --texte-doux: #8696a0;
    --bord: #2a3942;
    --page: #111b21;
    --panneau: #1f2c34;
    --lien: #53bdeb;
    --ok: #4ade80;
    --ko: #f87171;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body { margin: 0; background: var(--page); color: var(--texte); }
/* bande verte en haut de page, comme WhatsApp Web */
body::before { content: ""; position: fixed; inset: 0 0 auto; height: 120px; background: var(--vert); z-index: 0; }
:focus-visible { outline: 2px solid var(--vert-clair); outline-offset: 2px; }

.appli {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(320px, 520px);
  justify-content: center;
  gap: 20px;
  height: 100vh;
  margin: 0 auto;
  padding: 20px;
}

/* ---------- fenêtre de chat ---------- */
.telephone {
  display: flex;
  flex-direction: column;
  min-height: 0;
  border-radius: 14px;
  overflow: hidden;
  background: var(--fond-chat);
  box-shadow: 0 6px 24px rgba(0, 0, 0, .16);
}
.entete {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--vert);
  color: #fff;
}
.avatar {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #f5a623;
  font-weight: 700;
  font-size: 17px;
}
.titre { display: flex; flex-direction: column; flex: 1; }
.titre strong { font-size: 16px; }
.titre span { font-size: 12px; opacity: .85; }
.icone {
  position: relative;
  width: 38px;
  height: 38px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: #fff;
  font-size: 18px;
  cursor: pointer;
}
.icone:hover { background: rgba(255, 255, 255, .15); }
.panier span:not(:empty) {
  position: absolute;
  top: 2px;
  right: 0;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  border-radius: 8px;
  background: var(--vert-clair);
  color: #fff;
  font-size: 10.5px;
  line-height: 16px;
}

.fil {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.bulle {
  flex-shrink: 0;
  max-width: 85%;
  padding: 7px 10px 18px;
  border-radius: 8px;
  position: relative;
  line-height: 1.4;
  font-size: 14.5px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  box-shadow: 0 1px .5px rgba(0, 0, 0, .13);
}
.bulle .heure {
  position: absolute;
  right: 8px;
  bottom: 3px;
  font-size: 11px;
  color: var(--texte-doux);
}
.client { align-self: flex-end; background: var(--bulle-client); }
.bot { align-self: flex-start; background: var(--bulle-bot); }
.bot.bloquee { border-left: 3px solid var(--ko); }
.vu { display: none; }
.ancien-prix { color: var(--texte-doux); font-size: 13px; }
.note-systeme { align-self: center; margin: 6px 0; padding: 4px 10px; border-radius: 6px; font-size: 12px;
  background: rgba(0, 0, 0, .06); color: var(--texte-doux); }
.erreur { align-self: center; background: #fde8e8; color: #7a1c1c; font-size: 13px; padding: 6px 10px; border-radius: 6px; }

/* cartes produits */
.cartes { flex-shrink: 0; display: flex; gap: 8px; overflow-x: auto; align-self: flex-start; max-width: 100%; padding-bottom: 2px; }
.carte {
  flex: 0 0 150px;
  display: flex;
  flex-direction: column;
  background: var(--bulle-bot);
  border-radius: 8px;
  overflow: hidden;
  font-size: 12.5px;
  box-shadow: 0 1px .5px rgba(0, 0, 0, .13);
}
.carte a { color: var(--texte); text-decoration: none; flex: 1; }
.carte img { display: block; width: 100%; height: 100px; object-fit: contain; background: #fff; }
.carte a div { padding: 6px 8px; }
.carte strong { display: block; color: var(--vert-clair); margin-top: 3px; }
.ajout-devis {
  border: 0;
  border-top: 1px solid var(--bord);
  padding: 7px;
  background: transparent;
  color: var(--vert-clair);
  font-weight: 700;
  cursor: pointer;
}
.ajout-devis:hover { background: rgba(37, 211, 102, .08); }

/* devis : pièce jointe PDF */
.document { width: 290px; max-width: 85%; padding: 6px 6px 20px; white-space: normal; }
.doc-ligne {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px;
  border-radius: 6px;
  background: rgba(0, 0, 0, .05);
  color: var(--texte);
  text-decoration: none;
}
.doc-icone {
  flex: 0 0 auto;
  width: 34px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 4px;
  background: #e30613;
  color: #fff;
  font-size: 10.5px;
  font-weight: 700;
}
.doc-infos { display: flex; flex-direction: column; min-width: 0; }
.doc-infos strong { font-size: 13.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.doc-infos span { font-size: 11.5px; color: var(--texte-doux); }
.doc-actions { display: flex; border-top: 1px solid var(--bord); margin-top: 6px; }
.doc-actions a { flex: 1; padding: 7px 0 0; text-align: center; color: var(--lien); font-size: 13.5px; text-decoration: none; }

/* en train d'écrire */
.ecrit { display: flex; gap: 4px; padding: 12px 14px; }
.ecrit i { width: 7px; height: 7px; border-radius: 50%; background: var(--texte-doux); animation: saut 1.2s infinite; }
.ecrit i:nth-child(2) { animation-delay: .15s; }
.ecrit i:nth-child(3) { animation-delay: .3s; }
@keyframes saut { 0%, 60%, 100% { opacity: .3; } 30% { opacity: 1; } }

.suggestions { display: flex; gap: 6px; overflow-x: auto; padding: 6px 10px; scrollbar-width: thin; }
.suggestions button {
  flex: 0 0 auto;
  border: 1px solid var(--vert-clair);
  border-radius: 16px;
  padding: 5px 11px;
  background: var(--bulle-bot);
  color: var(--texte);
  font-size: 13px;
  cursor: pointer;
}
.suggestions button:hover { background: rgba(37, 211, 102, .1); }

.saisie { display: flex; gap: 8px; padding: 8px 10px 12px; }
.saisie input {
  flex: 1;
  min-width: 0;
  border: 0;
  border-radius: 20px;
  padding: 11px 15px;
  font-size: 15px;
  background: var(--bulle-bot);
  color: var(--texte);
  box-shadow: 0 1px .5px rgba(0, 0, 0, .1);
}
.saisie input:focus { outline: 2px solid var(--vert-clair); outline-offset: 0; }
.saisie button {
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  background: var(--vert);
  color: #fff;
  font-size: 17px;
  cursor: pointer;
}
.saisie button:disabled { opacity: .5; cursor: wait; }

/* ---------- panneau de test (adresse /?debug) ---------- */
.panneau { display: none; }
body.debug .appli { grid-template-columns: minmax(320px, 440px) minmax(280px, 1fr); max-width: 1100px; }
body.debug .panneau {
  display: flex;
  flex-direction: column;
  min-height: 0;
  padding: 16px 18px;
  border-radius: 14px;
  background: var(--panneau);
  border: 1px solid var(--bord);
}
.panneau h2 { margin: 0 0 4px; font-size: 18px; }
.panneau h3 { margin: 18px 0 8px; font-size: 15px; }
.info { margin: 0 0 12px; color: var(--texte-doux); font-size: 13px; }
.controle { padding: 10px 12px; border-radius: 8px; font-size: 14px; border: 1px solid var(--bord); }
.controle.ok { border-color: var(--ok); color: var(--ok); }
.controle.ko { border-color: var(--ko); color: var(--ko); }
.controle pre { white-space: pre-wrap; color: var(--texte); font-size: 12.5px; margin: 8px 0 0; }
.controle.vide { color: var(--texte-doux); }
.tableau-conteneur { overflow: auto; min-height: 0; flex: 1; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--bord); vertical-align: top; }
th { position: sticky; top: 0; background: var(--panneau); }
td.cite { font-weight: 700; }

/* ---------- calcul peinture ---------- */
dialog { border: 0; border-radius: 12px; padding: 20px; width: min(460px, 92vw); background: var(--panneau); color: var(--texte); }
dialog::backdrop { background: rgba(0, 0, 0, .4); }
dialog h2 { margin-top: 0; }
.grille { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.grille label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; }
.grille input { padding: 7px; border: 1px solid var(--bord); border-radius: 6px; background: transparent; color: var(--texte); }
.resultat { min-height: 1.4em; font-size: 14px; }
.actions { display: flex; gap: 8px; justify-content: flex-end; }
.actions button { padding: 8px 14px; border-radius: 6px; border: 1px solid var(--bord); background: transparent; color: var(--texte); cursor: pointer; }
.actions .principal { background: var(--vert); color: #fff; border-color: var(--vert); }

@media (max-width: 760px) {
  body::before { display: none; }
  .appli, body.debug .appli { grid-template-columns: 1fr; height: auto; padding: 0; gap: 12px; }
  .telephone { height: 100dvh; border-radius: 0; }
  body.debug .panneau { border-radius: 0; margin: 0 12px 12px; }
}

@media (prefers-reduced-motion: reduce) {
  .ecrit i { animation: none; }
}