/* Plateforme de conversation (« à la ChatGPT ») : barre latérale, fil, cartes e-mail, zone de saisie.
   Couleurs : uniquement les jetons des thèmes clair et sombre (app.css) ; chaque paire interactive est dans ContrastAudit::pairs(). */
.chat-body { height: 100vh; height: 100dvh; display: flex; flex-direction: column; overflow: hidden; min-height: 0; }
.chat { flex: 1; min-height: 0; display: grid; grid-template-columns: 300px minmax(0, 1fr); }
.chat-top, .chat-scrim, .chat-side-close { display: none; }

/* Barre latérale */
.chat-side { background: var(--card); border-right: 1px solid var(--line); overflow-y: auto; min-height: 0; padding: 12px; }
.conv-nav { display: grid; grid-template-columns: minmax(0, 1fr); gap: 10px; align-content: start; }
.conv-new-btn { width: 100%; justify-content: center; }
.conv-search { position: relative; }
.conv-search .inp { padding-left: 32px; padding-right: 30px; font-size: 13.5px; }
.conv-search-ic { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); color: var(--sub); pointer-events: none; }
.conv-search-clear { position: absolute; right: 4px; top: 50%; transform: translateY(-50%); }
.conv-group { margin-top: 4px; }
.conv-group-title { margin: 8px 4px 4px; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .07em; color: var(--sub); }
.conv-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.conv-item { display: flex; align-items: center; min-width: 0; border-radius: 9px; border-left: 3px solid transparent; }
.conv-item:hover, .conv-item:focus-within { background: var(--tint); }
.conv-item.is-active { background: var(--tint); border-left-color: var(--acc); }
.conv-link { flex: 1; min-width: 0; padding: 8px 8px 8px 9px; color: var(--ink); text-decoration: none; font-size: 13.5px; border-radius: 9px; }
.conv-item.is-active .conv-link { font-weight: 600; }
.conv-title { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.conv-actions { display: flex; flex: none; padding-right: 2px; }
.conv-actions .icon-btn { width: 30px; height: 30px; }
.conv-del:hover { color: var(--warn); }
.conv-rename, .conv-confirm { flex: 1; min-width: 0; padding: 8px; display: grid; gap: 8px; }
.conv-confirm { background: var(--card); border: 1px solid var(--warn); border-radius: 9px; margin: 2px 0; }
.conv-confirm p { margin: 0; font-size: 13px; overflow-wrap: anywhere; }
.conv-rename-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.conv-empty { margin: 8px 4px; }
.btn.danger { background: transparent; color: var(--warn); border: 1.5px solid var(--warn); }
.btn.danger:hover { filter: none; background: var(--warn); color: var(--card); }

/* Zone principale */
.chat-main { min-width: 0; min-height: 0; display: flex; flex-direction: column; }
.thread, .thread-inner { flex: 1; min-height: 0; display: flex; flex-direction: column; }
.thread-head { width: 100%; max-width: 860px; margin: 0 auto; padding: 12px 24px 0; }
.thread-title { margin: 0; font-size: 18px; font-weight: 700; overflow-wrap: anywhere; }
.thread-to { margin: 2px 0 0; font-size: 13px; color: var(--sub); overflow-wrap: anywhere; }
.chat-log { flex: 1; min-height: 0; overflow-y: auto; padding: 14px 24px 8px; }
.chat-log > * { max-width: 812px; margin-left: auto; margin-right: auto; }
.chat-flash { max-width: 860px; margin: 12px auto 0; width: calc(100% - 48px); }

.thread-tools { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 6px; align-items: flex-start; }
.thread-tools > details { flex: 0 1 auto; min-width: 0; }
.thread-tools > details[open] { flex: 1 1 100%; }
.thread-tools > details > summary { padding-right: 14px; }
.settings, .docs-panel { margin: 8px 0; border: 1px solid var(--line); border-radius: 10px; background: var(--card); }
.settings summary, .docs-panel summary { cursor: pointer; padding: 9px 12px; font: 600 13px var(--font); color: var(--ink); display: flex; align-items: center; gap: 8px; list-style: none; border-radius: 10px; }
.settings summary::-webkit-details-marker, .docs-panel summary::-webkit-details-marker { display: none; }
.settings summary::after, .docs-panel summary::after { content: ""; margin-left: auto; width: 7px; height: 7px; border-right: 2px solid var(--sub); border-bottom: 2px solid var(--sub); transform: rotate(45deg); transition: transform .15s; flex: none; }
.settings[open] summary::after, .docs-panel[open] summary::after { transform: rotate(-135deg); }
.settings summary:focus-visible, .docs-panel summary:focus-visible { outline: 2px solid var(--acc); outline-offset: 2px; }
.settings-sum { font-weight: 400; color: var(--sub); font-size: 12px; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.settings-edit { margin-left: auto; font-weight: 600; font-size: 12px; color: var(--acc-strong); white-space: nowrap; }
.settings[open] .settings-edit { display: none; }
.settings summary:has(.settings-edit)::after { margin-left: 0; }
.settings-body { padding: 12px; border-top: 1px solid var(--line); }
.settings-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.settings .field { margin-bottom: 12px; }
.check { display: flex; align-items: center; gap: 8px; font-size: 13.5px; cursor: pointer; }
.check input { width: 18px; height: 18px; accent-color: var(--acc-strong); flex: none; }
.docs-list { list-style: none; margin: 0; padding: 4px 12px; border-top: 1px solid var(--line); }
.docs-list li { display: flex; align-items: center; gap: 8px; padding: 6px 0; border-bottom: 1px solid var(--line); font-size: 13px; min-width: 0; }
.docs-list li:last-child { border-bottom: 0; }
.doc-name { font-weight: 600; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.doc-meta { color: var(--sub); font-size: 12px; margin-left: auto; white-space: nowrap; }
.docs-panel > .hint, .docs-panel > .doc-warn { margin: 6px 12px 10px; }

/* Carte « Pour qui est cet e-mail ? » */
.recip { padding: 16px; margin-bottom: 16px; }
.recip-title { font-size: 16px; font-weight: 700; margin: 0 0 12px; }
.recip-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; }
.type-pick { border: 0; padding: 0; margin: 0 0 12px; min-inline-size: 0; }
.type-pick .lab { padding: 0; }
.picks { display: flex; flex-wrap: wrap; gap: 8px; }
.pick { position: relative; display: inline-flex; border: 1px solid var(--ctl); border-radius: 99px; background: var(--card); color: var(--ink); font-size: 13px; cursor: pointer; }
.pick span { padding: 6px 13px; border-radius: 99px; }
.pick input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.pick:hover { border-color: var(--acc); }
.pick:has(input:checked) { background: var(--ink); color: var(--card); border-color: var(--ink); }
.pick:has(input:focus-visible) { outline: 2px solid var(--acc); outline-offset: 2px; }
.recip-next { margin: 12px 0 0; }
/* Questions guidées : 2 colonnes sur grand écran, 1 colonne sur mobile (360 px) ; libellés lisibles (pas en majuscules). */
.guided { border: 0; padding: 0; margin: 0 0 14px; min-width: 0; }
.guided .lab { padding: 0; }
.guided-intro { margin: 0 0 10px; }
.guided-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 330px), 1fr)); gap: 0 14px; }
.guided .field { margin-bottom: 12px; }
.guided .field > label { text-transform: none; letter-spacing: 0; font-size: 13px; font-weight: 600; color: var(--ink); }
.guided-note { margin: 0; color: var(--ink); }
.guided-note:empty { display: none; }
.attach-hint { display: flex; gap: 6px; align-items: flex-start; margin: 0 0 6px; }
.attach-hint svg { flex: none; margin-top: 2px; }
/* Message « demande courte » : doux, jamais bloquant (affiché par le contrôleur, sans aller-retour serveur). */
.nudge { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; padding: 10px 12px; margin: 0 0 8px; border: 1px solid var(--acc); border-radius: 10px; background: var(--tint); color: var(--ink); }
.nudge[hidden] { display: none; }
.nudge-msg { margin: 0; flex: 1 1 260px; font-size: 13.5px; line-height: 1.45; }
.nudge-actions { display: flex; flex-wrap: wrap; gap: 8px; }

/* Fil : bulles et cartes */
.turn { display: flex; margin: 0 0 16px; min-width: 0; }
.turn-user { justify-content: flex-end; }
.bubble { background: var(--acc-strong); color: var(--on-acc); border-radius: 16px 16px 4px 16px; padding: 10px 14px; max-width: min(560px, 92%); overflow-wrap: anywhere; }
.bubble p { margin: 0; }
.bubble-to { font-size: 12px; font-weight: 700; margin-bottom: 4px !important; }
.bubble-text { white-space: pre-wrap; font-size: 14.5px; line-height: 1.5; }
.bubble-docs { list-style: none; margin: 8px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.bubble-docs li { display: inline-flex; align-items: center; gap: 4px; border: 1px solid var(--on-acc); border-radius: 99px; padding: 1px 9px; font-size: 12px; max-width: 100%; }
.bubble-docs li span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.turn-assistant { justify-content: flex-start; }
.mail-card { width: 100%; max-width: 780px; min-width: 0; }
.mail-card-label { display: flex; align-items: center; gap: 6px; margin: 0 0 8px; font-size: 12.5px; font-weight: 600; color: var(--sub); }
.mail-card .mailbox .txt { min-height: 120px; }
.mail-card .mail-frame { min-height: 260px; }
.mail-card .quick { margin: 10px 0 0; }
.gen-skel.mail-card { max-width: 780px; margin: 0; }
.turn-pending { display: grid; }
/* Les messages suivent la même colonne centrée que l'en-tête et la zone de saisie (.turn redéfinissait la marge). */
.chat-log > .turn { margin: 0 auto 16px; }
/* Boutons Copier / Ouvrir / Régénérer : collés en bas de l'écran tant que l'e-mail est visible, même long.
   overflow: clip (et non hidden) pour que la barre puisse rester collante dans le fil qui défile. */
.mail-card .mailbox { overflow: clip; }
.mail-card .mailbox .act { position: sticky; bottom: 0; z-index: 1; box-shadow: 0 -6px 12px -10px rgba(12, 12, 20, .35); }

/* Zone de saisie */
.composer-wrap { width: 100%; max-width: 860px; margin: 0 auto; padding: 8px 24px 14px; position: relative; }
.jump-down { position: absolute; left: 50%; bottom: calc(100% + 6px); transform: translateX(-50%); z-index: 2; border-radius: 99px; box-shadow: 0 6px 16px rgba(12, 12, 20, .25); }
.composer { background: var(--card); border: 1px solid var(--ctl); border-radius: 14px; padding: 8px 10px 6px; }
.composer:focus-within { border-color: var(--acc); }
.composer-input { display: block; width: 100%; border: 0; background: transparent; resize: none; min-height: 28px; max-height: 40vh; padding: 6px 4px; font-size: 14.5px; line-height: 1.5; }
.composer-input:focus-visible { outline: 2px solid var(--acc); outline-offset: 1px; border-radius: 6px; }
.composer-bar { display: flex; align-items: center; gap: 8px; padding-top: 4px; }
.composer-bar .attach { width: 38px; height: 38px; color: var(--ink); border: 1px solid var(--ctl); border-radius: 10px; }
.composer-status { flex: 1; min-width: 0; font-size: 12.5px; color: var(--sub); overflow-wrap: anywhere; }
.composer-status.is-error { color: var(--warn); font-weight: 600; }
.btn.send { flex: none; }
.composer-meta { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 2px 14px; margin: 6px 4px 0; font-size: 12px; color: var(--sub); }
.composer-meta .regen-quota { margin: 0; }
.chips { list-style: none; margin: 0 0 8px; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.file-chip { display: inline-flex; align-items: center; gap: 6px; max-width: 100%; background: var(--tint); color: var(--ink); border: 1px solid var(--line); border-radius: 99px; padding: 2px 4px 2px 10px; font-size: 12.5px; }
.file-chip-name { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 600; }
.file-chip-size { color: var(--sub); font-size: 11.5px; white-space: nowrap; }
.privacy-note { display: flex; gap: 6px; align-items: flex-start; margin: 0 0 8px; }
.privacy-note svg { flex: none; margin-top: 2px; }
.composer-alert { margin-bottom: 8px; }

/* Accueil sans conversation */
.chat-welcome { max-width: 680px; margin: 0 auto; padding: 56px 24px; text-align: center; overflow-y: auto; }
.chat-steps { list-style: none; margin: 0 0 24px; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; text-align: left; }
.chat-steps li { display: flex; flex-direction: column; gap: 8px; padding: 12px; border: 1px solid var(--line); border-radius: 12px; background: var(--card); font-size: 13.5px; line-height: 1.35; }
.chat-step-n { width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center; background: var(--tint); color: var(--acc-strong); font: 600 12px var(--mono); }
.chat-welcome-title { font-size: 28px; letter-spacing: -.02em; line-height: 1.25; margin: 0 0 12px; }
.chat-welcome-sub { color: var(--sub); margin: 0 auto 22px; max-width: 52ch; }
.chat-suggest-title { font-size: 12px; text-transform: uppercase; letter-spacing: .07em; color: var(--sub); margin: 34px 0 10px; }
.chat-suggest { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.chat-suggest-btn { font: 500 14px var(--font); padding: 10px 16px; border-radius: 12px; border: 1px solid var(--ctl); background: var(--card); color: var(--ink); cursor: pointer; }
.chat-suggest-btn:hover { border-color: var(--acc); color: var(--acc-strong); background: var(--tint); }

/* Écran étroit : la barre latérale devient un tiroir */
@media (max-width: 820px) {
    .chat { grid-template-columns: minmax(0, 1fr); grid-template-rows: auto minmax(0, 1fr); }
    .chat-top { display: block; padding: 8px 12px; background: var(--card); border-bottom: 1px solid var(--line); }
    .chat-side { position: fixed; z-index: 40; top: 0; bottom: 0; left: 0; width: min(320px, 88vw); transform: translateX(-104%); visibility: hidden; transition: transform .2s ease, visibility 0s linear .2s; box-shadow: 0 12px 32px rgba(12, 12, 20, .3); }
    .chat.is-open .chat-side { transform: none; visibility: visible; transition: transform .2s ease, visibility 0s; }
    .chat-scrim { display: block; position: fixed; z-index: 30; inset: 0; background: rgba(12, 12, 20, .55); opacity: 0; pointer-events: none; transition: opacity .2s; }
    .chat.is-open .chat-scrim { opacity: 1; pointer-events: auto; }
    .chat-side-close { display: inline-grid; float: right; margin: -4px 0 8px 8px; }
    .thread-head, .chat-log, .composer-wrap { padding-left: 12px; padding-right: 12px; }
    .chat-flash { width: calc(100% - 24px); }
    .chat-welcome { padding: 28px 16px; }
    .chat-welcome-title { font-size: 22px; }
    .composer-meta { flex-direction: column; }
    .doc-meta { display: none; }
}
@media (max-width: 560px) {
    .chat-steps { grid-template-columns: minmax(0, 1fr); }
    .chat-steps li { flex-direction: row; align-items: center; padding: 9px 12px; }
    .chat-top { padding: 6px 10px; }
    .mail-card .mailbox .act { gap: 6px; padding: 8px; position: static; box-shadow: none; }
    .mail-card .mailbox .act .btn { flex: 1 1 calc(50% - 6px); justify-content: center; }
    .mail-card .mailbox .act .btn:first-child { flex-basis: 100%; }
    .mail-card .mailbox .mail-frame, .mail-card .mailbox .txt { min-height: 0; }
    /* Peu de place : résumés plus courts, aide clavier lue par les lecteurs d'écran seulement (pas utile avec un clavier tactile). */
    .settings-sum { display: none; }
    #chat-hint { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
    .composer-meta { justify-content: flex-end; }
    .composer-wrap { padding-bottom: 10px; }
    .thread-title { font-size: 16px; }
}
@media (prefers-reduced-motion: reduce) {
    .chat-side, .chat-scrim { transition: none; }
}

/* Liens « Ma signature » : réglages et bas de la barre latérale. */
.sig-link { margin: 4px 0 0; }
.conv-sig { display: flex; align-items: center; gap: 8px; margin-top: 6px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--card); color: var(--ink); font: 600 13px var(--font); text-decoration: none; }
.conv-sig:hover { background: var(--tint); }
.conv-sig:focus-visible { outline: 2px solid var(--acc); outline-offset: 2px; }