/* =====================================================================
   chat.css — Mise en page de la messagerie (chat.html)
   Ordinateur : barre latérale + conversation côte à côte.
   Téléphone (< 768px) : un seul panneau visible à la fois.
   ===================================================================== */

/* ---------- Écran de chargement ---------- */
.loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  height: 100%;
  color: var(--color-muted);
}
.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ---------- Grille principale ---------- */
.app {
  display: grid;
  grid-template-columns: 340px 1fr;
  height: 100vh;
  height: 100dvh; /* hauteur réelle sur mobile (barre d'adresse) */
  overflow: hidden;
}

/* ============================ BARRE LATÉRALE ============================ */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 0;
  padding: 12px;
  border-right: 1px solid var(--color-border);
  background: var(--color-surface);
}

.sidebar-header { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.me { display: flex; align-items: center; gap: 10px; min-width: 0; color: inherit; text-decoration: none; border-radius: var(--radius); }
.me:hover strong { text-decoration: underline; }
.sidebar-actions a.icon-btn { text-decoration: none; }

.me > div { display: flex; flex-direction: column; min-width: 0; }
.me strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sidebar-actions { display: flex; }

.panel { display: flex; flex-direction: column; gap: 10px; min-height: 0; flex: 1; }

.inline-form { display: flex; gap: 8px; }
.inline-form input { flex: 1; min-width: 0; }

/* ---------- Listes (salons, contacts, membres) ---------- */
.list {
  flex: 1;
  margin: 0;
  padding: 0;
  overflow-y: auto;
  list-style: none;
}
.list-item {
  display: flex;
  align-items: center;
  gap: 4px;
  border-radius: var(--radius);
  transition: background var(--transition);
}
.list-item:hover { background: var(--color-surface-2); }
.list-item.is-active { background: color-mix(in srgb, var(--color-primary) 14%, transparent); }

.list-item-main {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  min-width: 0;
  padding: 10px;
  border: none;
  background: none;
  text-align: left;
}
.list-item-text { display: flex; flex-direction: column; flex: 1; min-width: 0; }
.list-item-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.list-item-text strong,
.preview {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.has-unread .preview { color: var(--color-text); font-weight: 600; }

.empty { padding: 24px 12px; text-align: center; font-size: 14px; list-style: none; }

/* ============================ CONVERSATION ============================ */
.chat {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  background: var(--color-bg);
}

.chat-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 100%;
  padding: 24px;
  text-align: center;
}

.chat-view { display: flex; flex-direction: column; height: 100%; min-height: 0; }

.chat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}
.chat-title { display: flex; flex-direction: column; flex: 1; min-width: 0; }
.chat-title h2 { font-size: 16px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- Liste des messages ---------- */
.messages {
  flex: 1;
  min-height: 0;
  padding: 16px;
  overflow-y: auto;
  overscroll-behavior: contain;
}
.messages.is-dragover { outline: 3px dashed var(--color-primary); outline-offset: -10px; }

.load-more { display: flex; margin: 0 auto 12px; }

.message-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-width: 900px;
  margin: 0 auto;
  padding: 0;
  list-style: none;
}

.day-separator { display: flex; justify-content: center; margin: 16px 0 8px; }
.day-separator span {
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--color-surface-2);
  color: var(--color-muted);
  font-size: 12px;
  font-weight: 600;
}
.day-separator span::first-letter { text-transform: uppercase; }

/* ---------- Un message ---------- */
.message {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  max-width: min(78%, 560px);
  margin-top: 10px;
}
.message.is-grouped { margin-top: 0; }
.message.is-mine { align-self: flex-end; flex-direction: row-reverse; }
.message .avatar { width: 32px; height: 32px; font-size: 13px; }
.avatar-spacer { width: 32px; flex-shrink: 0; }

.message-body { display: flex; flex-direction: column; min-width: 0; }
.is-mine .message-body { align-items: flex-end; }

.author { margin: 0 0 2px 12px; color: var(--color-muted); font-size: 12px; font-weight: 600; }

.bubble {
  position: relative;
  padding: 8px 12px 6px;
  border-radius: var(--radius-lg);
  background: var(--color-bubble-theirs);
  box-shadow: var(--shadow);
  overflow-wrap: anywhere;
}
.is-theirs .bubble { border-bottom-left-radius: 6px; }
.is-mine .bubble {
  border-bottom-right-radius: 6px;
  background: var(--color-bubble-mine);
  color: var(--color-bubble-mine-text);
}

.bubble-text { white-space: pre-wrap; }

.bubble-image { display: block; margin: -2px -6px 6px; }
.bubble-image img {
  max-height: 320px;
  border-radius: calc(var(--radius-lg) - 6px);
  object-fit: cover;
  background: var(--color-surface-2);
}

/* Heure et coches en bas à droite de la bulle */
.meta {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 4px;
  margin-top: 2px;
  font-size: 11px;
  opacity: 0.75;
}
.ticks { letter-spacing: -3px; font-weight: 700; }
.ticks.is-read { color: var(--color-read); opacity: 1; }

/* ---------- Réactions (fonctionnalité supplémentaire) ---------- */
.reactions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  margin-top: 4px;
}
.is-mine .reactions { justify-content: flex-end; }

.reaction-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-surface);
  font-size: 13px;
  transition: transform var(--transition);
}
.reaction-chip:hover { transform: scale(1.08); }
.reaction-chip span { font-size: 12px; font-weight: 600; }
.reaction-chip.is-mine {
  border-color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 14%, var(--color-surface));
}

/* Le bouton « ajouter une réaction » n'apparaît qu'au survol (sur ordinateur) */
.reaction-add {
  width: 26px;
  height: 26px;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-muted);
  font-size: 14px;
  opacity: 0;
  transition: opacity var(--transition);
}
.message:hover .reaction-add,
.reaction-add:focus-visible,
.reactions.has-reactions .reaction-add { opacity: 1; }
.reactions:not(.has-reactions) { height: 0; margin: 0; }
.message:hover .reactions:not(.has-reactions) { height: auto; margin-top: 4px; }

.reaction-picker {
  position: absolute;
  bottom: calc(100% + 4px);
  z-index: 20;
  display: flex;
  gap: 2px;
  padding: 4px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-surface);
  box-shadow: var(--shadow);
}
.is-theirs .reaction-picker { left: 0; }
.is-mine .reaction-picker { right: 0; }
.reaction-picker button {
  width: 34px;
  height: 34px;
  border: none;
  border-radius: 50%;
  background: none;
  font-size: 20px;
  transition: transform var(--transition);
}
.reaction-picker button:hover { transform: scale(1.25); }

/* ---------- Indicateur « en train d'écrire… » ---------- */
.typing {
  min-height: 22px;
  padding: 0 20px;
  font-size: 13px;
  font-style: italic;
}

/* ---------- Bouton « aller en bas » ---------- */
.scroll-down {
  position: absolute;
  right: 20px;
  bottom: 110px;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-surface);
  box-shadow: var(--shadow);
  font-size: 18px;
}

/* ---------- Zone de saisie ---------- */
.composer {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 10px 12px calc(10px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}
.composer textarea {
  flex: 1;
  min-height: 40px;
  max-height: 150px;
  border-radius: 20px;
  resize: none;
}
.composer label.icon-btn { cursor: pointer; }
.composer.is-uploading { opacity: 0.6; pointer-events: none; }
.composer.is-uploading::before {
  content: "Envoi de l'image…";
  align-self: center;
  font-size: 13px;
  color: var(--color-muted);
}

/* ============================ BOÎTES DE DIALOGUE ============================ */
.dialog {
  width: min(92vw, 440px);
  max-height: 85vh;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  color: var(--color-text);
  box-shadow: var(--shadow);
}
.dialog::backdrop { background: rgb(0 0 0 / 45%); }
.dialog h2 { margin-bottom: 16px; font-size: 20px; }
.dialog .list { max-height: 40vh; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }

.check-list { max-height: 35vh; margin: 0; padding: 0; overflow-y: auto; list-style: none; }
.check-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.check-item:hover { background: var(--color-surface-2); }
.check-item .avatar { width: 30px; height: 30px; font-size: 13px; }

.add-member { display: flex; align-items: flex-end; gap: 8px; margin-top: 12px; }
.add-member .field { flex: 1; margin: 0; }

/* ============================ ADAPTABILITÉ (téléphone) ============================ */
.only-mobile { display: none; }

@media (max-width: 767px) {
  .app { grid-template-columns: 1fr; }
  .only-mobile { display: inline-flex; }

  /* Par défaut : la liste ; quand un salon est ouvert : la conversation */
  .chat { display: none; }
  .app.show-chat .sidebar { display: none; }
  .app.show-chat .chat { display: flex; }

  .sidebar { border-right: none; }
  .messages { padding: 12px 8px; }
  .message { max-width: 88%; }
  .chat-header { padding: 8px; gap: 8px; }
  .composer .btn { padding: 8px 12px; }

}

/* Écran tactile (pas de survol) : toucher une bulle affiche le bouton de réaction */
@media (hover: none) {
  .message.is-selected .reaction-add { opacity: 1; }
  .message.is-selected .reactions:not(.has-reactions) { height: auto; margin-top: 4px; }
}