:root {
  --encre: #1c2430;
  --discret: #5b6675;
  --fond: #f4f6f9;
  --carte: #ffffff;
  --trait: #d8dee7;
  --accent: #1f4e79;
  --accent-clair: #e8f0f8;
  --alerte: #8a2d2d;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--encre);
  background: var(--fond);
}

.entete {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 16px;
  padding: 10px 20px;
  background: var(--accent);
  color: #fff;
}
.entete h1 { margin: 0; font-size: 1.1rem; font-weight: 600; }
.entete .qui {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  font-size: 0.9rem;
}
.entete form { display: inline; margin: 0; }
.entete a { color: #fff; text-decoration: none; padding: 4px 2px; }
.entete a:hover, .entete a:focus-visible { text-decoration: underline; }

button {
  font: inherit;
  padding: 8px 16px;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}
button:disabled { opacity: 0.55; cursor: wait; }
button.discret { background: transparent; color: inherit; border-color: currentColor; padding: 4px 10px; font-size: 0.85rem; }

.disposition {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  grid-template-areas: "conversation panneau";
  gap: 16px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 20px;
}

.panneau {
  grid-area: panneau;
  align-self: start;
  background: var(--carte);
  border: 1px solid var(--trait);
  border-radius: 8px;
  padding: 14px 16px;
}
.panneau summary { cursor: pointer; font-weight: 600; font-size: 1rem; }
.panneau[open] summary { margin-bottom: 8px; }
.panneau p { margin: 0; color: var(--discret); font-size: 0.9rem; }

.conversation {
  grid-area: conversation;
  display: flex;
  flex-direction: column;
  min-height: calc(100vh - 120px);
}
.fil { flex: 1; display: flex; flex-direction: column; gap: 12px; padding-bottom: 12px; }
.vide { color: var(--discret); }

.question, .reponse, .erreur {
  max-width: 90%;
  padding: 10px 14px;
  border-radius: 10px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.question { align-self: flex-end; background: var(--accent-clair); border: 1px solid #c4d7ea; }
.reponse { align-self: flex-start; background: var(--carte); border: 1px solid var(--trait); }
.erreur { align-self: flex-start; background: #fbeaea; border: 1px solid #e3b5b5; color: var(--alerte); }
.mention { display: block; margin-top: 6px; font-size: 0.8rem; color: var(--discret); }

.saisie {
  position: sticky;
  bottom: 0;
  background: var(--fond);
  padding: 8px 0 4px;
  border-top: 1px solid var(--trait);
}
.saisie textarea {
  width: 100%;
  min-height: 64px;
  padding: 10px 12px;
  font: inherit;
  border: 1px solid var(--trait);
  border-radius: 8px;
  resize: vertical;
}
.actions { display: flex; align-items: center; gap: 12px; margin-top: 8px; }
.statut { color: var(--discret); font-size: 0.9rem; min-height: 1.4em; }
.nouvelle { margin: 0; }

.carte-connexion {
  max-width: 420px;
  margin: 12vh auto 0;
  padding: 24px;
  background: var(--carte);
  border: 1px solid var(--trait);
  border-radius: 10px;
}
.carte-connexion h1 { margin: 0 0 12px; font-size: 1.3rem; }
.carte-connexion label { display: block; margin: 12px 0 4px; font-weight: 600; }
.carte-connexion input {
  width: 100%;
  padding: 10px 12px;
  font: inherit;
  border: 1px solid var(--trait);
  border-radius: 6px;
}
.carte-connexion button { margin-top: 16px; width: 100%; }
.message { color: var(--discret); }
.message.erreur { color: var(--alerte); background: none; border: 0; padding: 0; }

@media (max-width: 768px) {
  .disposition {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas: "panneau" "conversation";
    padding: 12px;
  }
  .question, .reponse, .erreur { max-width: 100%; }
}

.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Panneau : blocs de chiffres et raccourcis */
.panneau h3 { margin: 12px 0 4px; font-size: 0.9rem; }
.panneau .bloc { border-top: 1px solid var(--trait); padding: 8px 0; }
.panneau .mention, .panneau .indispo { color: var(--discret); font-size: 0.85rem; margin: 4px 0; }
.panneau .detail { display: flex; justify-content: space-between; gap: 8px; font-size: 0.85rem; color: var(--discret); padding: 2px 0; }
.panneau button.chiffre, .panneau button.alerte, .panneau button.raccourci {
  display: flex; justify-content: space-between; align-items: baseline; gap: 8px;
  width: 100%; text-align: left; background: transparent; color: inherit;
  border: 0; border-radius: 4px; padding: 6px 4px; font-size: 0.95rem;
}
.panneau button.raccourci { border: 1px solid var(--trait); margin: 4px 0; font-size: 0.85rem; }
.panneau button:hover { background: rgba(127, 127, 127, 0.12); }
.panneau .montant { font-weight: 600; white-space: nowrap; }

/* Administration : tableaux de compteurs */
.admin { padding: 16px; max-width: 1100px; margin: 0 auto; overflow-x: auto; }
.admin table { border-collapse: collapse; width: 100%; font-size: 0.9rem; }
.admin th, .admin td { border-bottom: 1px solid var(--trait); padding: 6px 8px; text-align: left; }
.admin td.nombre { text-align: right; white-space: nowrap; }
.admin .discret-texte { color: var(--discret); }
.admin section { margin-bottom: 24px; }

/* Conditions d'utilisation */
.carte-conditions { max-width: 46rem; margin: 2rem auto; padding: 0 1rem; }
.texte-conditions { margin: 1rem 0; }
.texte-conditions table { border-collapse: collapse; }
.texte-conditions th, .texte-conditions td { border: 1px solid #999; padding: .3rem .5rem; text-align: left; }
.diagnostic { white-space: pre-wrap; overflow-x: auto; font-size: 0.85rem; }

.choix-mois { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.choix-mois select { flex: 1; min-height: 44px; font: inherit; padding: 6px 8px; }

.liste-rapports { list-style: none; padding: 0; margin: 0; }
.liste-rapports a { display: block; min-height: 44px; line-height: 44px; }

/* Dépôt : une ligne par mois, libellé au-dessus du champ sur mobile, à gauche dès 600 px */
.ligne-mois {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 8px 0;
  border-bottom: 1px solid var(--trait);
}
.ligne-mois label { font-weight: 600; }
.ligne-mois input[type="file"] { width: 100%; min-width: 0; }
@media (min-width: 600px) {
  .ligne-mois { grid-template-columns: 11rem minmax(0, 1fr); align-items: center; gap: 12px; }
}
#formulaire-depot button { margin-top: 16px; }

/* Résumé d'un dépôt */
.resume-depot {
  margin: 12px 0 20px;
  padding: 12px 16px;
  background: var(--carte);
  border: 1px solid var(--trait);
  border-radius: 8px;
}
.resume-depot p { margin: 4px 0; }
.resume-depot .reserves { margin: 4px 0 8px; padding-left: 20px; color: var(--discret); }
.resume-depot summary { cursor: pointer; margin-top: 8px; color: var(--accent); }
.lien-depot { display: inline-block; margin-top: 8px; min-height: 44px; line-height: 44px; }

/* Administration : formulaires d'invitation et de déblocage */
.formulaire-admin { max-width: 28rem; margin: 8px 0 16px; }
.formulaire-admin label { display: block; margin: 12px 0 4px; font-weight: 600; }
.formulaire-admin input, .formulaire-admin select {
  width: 100%;
  padding: 10px 12px;
  font: inherit;
  border: 1px solid var(--trait);
  border-radius: 6px;
}
.formulaire-admin button { margin-top: 16px; }