/* Additional chat controls stay out of the established desktop layout. */
.message-new-mobile-label,
.message-composer-toggle,
.message-composer-tools,
.message-send-icon { display: none; }

.message-jump-latest {
  align-self: center;
  flex: none;
  min-height: 40px;
  margin: .35rem .75rem;
  padding: .45rem 1rem;
  border-radius: 999px;
  color: var(--brand-ink);
  background: var(--paper);
  font-size: .8rem;
}
.message-jump-latest[hidden] { display: none; }

@media (max-width: 767px) {
  .main-content:has(.messages-page) { padding-inline: 0; padding-bottom: 0; }
  .messages-page { min-height: 0; }
  .messages-page:not(.has-active) {
    display: flex;
    flex-direction: column;
    height: calc(var(--app-viewport-height, 100dvh) - var(--bottom-nav-h) - env(safe-area-inset-bottom) - max(1.2rem, env(safe-area-inset-top)));
  }
  .messages-page:not(.has-active) .messages-workspace { flex: 1; height: auto; min-height: 0; }
  .messages-page-header {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: .75rem;
    margin-bottom: 1rem;
    padding-inline: 1rem;
  }
  .messages-page-header .eyebrow { display: none; }
  .messages-page-header h1 { font-size: clamp(1.45rem, 6vw, 2rem); letter-spacing: -.035em; }
  .messages-page-header .message-new-conversation {
    flex: none;
    width: auto;
    min-height: 44px;
    padding: .65rem .85rem;
    border-radius: 14px;
    font-size: .88rem;
  }
  .message-new-label { display: none; }
  .message-new-mobile-label { display: inline; }
  .messages-workspace {
    display: block;
    height: calc(var(--app-viewport-height, 100dvh) - 180px - var(--bottom-nav-h, 64px) - env(safe-area-inset-bottom));
    min-height: 240px;
    border-right: 0;
    border-left: 0;
    border-radius: 0;
    box-shadow: none;
  }
  .messages-sidebar,
  .messages-panel { width: 100%; height: 100%; min-height: 0; border-right: 0; }
  .messages-sidebar-toolbar { padding: .7rem 1rem; }
  .messages-search input { min-height: 46px; font-size: 16px; }
  .messages-search input, .message-conversation-heading strong, .message-conversation-preview {
    font-family: var(--body); letter-spacing: normal; text-transform: none;
  }
  .message-conversation-list { padding: .25rem .5rem; overscroll-behavior-y: contain; }
  .message-conversation-row { min-height: 82px; margin: 0; padding: .8rem .6rem; gap: .65rem; border-radius: 12px; }
  .message-conversation-heading strong { font-size: 1rem; }
  .message-conversation-heading time { font-size: .66rem; }
  .message-conversation-preview { margin-top: .28rem; font-size: .86rem; }
  .message-conversation-row .message-avatar-stack { width: 46px; }
  .message-conversation-row .message-avatar { width: 44px; height: 44px; font-size: .85rem; }
  .message-conversation-row + .message-conversation-row { border-top: 1px solid var(--line); }
  .message-search-result { min-height: 80px; padding: .85rem; }
  .messages-page.has-active .messages-sidebar,
  .messages-page.has-active .messages-page-header,
  .messages-page:not(.has-active) .messages-panel { display: none; }

  /* A chat follows the visible viewport, including the on-screen keyboard. */
  .messages-page.has-active {
    position: fixed;
    z-index: 90;
    top: var(--app-viewport-top, 0px);
    left: 0;
    right: 0;
    height: var(--app-viewport-height, 100dvh);
    min-height: 0;
    margin: 0;
    overflow: hidden;
    background: var(--paper);
  }
  .messages-page.has-active .messages-workspace { height: 100%; min-height: 0; border: 0; }
  .messages-panel { background: var(--paper); }
  .message-chat-header {
    flex: none;
    min-height: calc(64px + env(safe-area-inset-top));
    padding: max(.6rem, env(safe-area-inset-top)) max(.65rem, env(safe-area-inset-right)) .6rem max(.4rem, env(safe-area-inset-left));
    gap: .55rem;
    background: var(--paper);
  }
  .message-mobile-back {
    display: inline-flex;
    width: 44px;
    min-height: 44px;
    padding: 0;
    align-items: center;
    justify-content: center;
    border: 0;
    border-radius: 50%;
    font-size: 1.4rem;
  }
  .message-chat-heading { flex: 1; min-width: 0; }
  .message-chat-heading h2 { font-size: 1.05rem; }
  .message-chat-heading p { margin-top: .15rem; font-size: .75rem; }
  .message-chat-header .message-avatar-stack,
  .message-chat-header .message-group-avatar-control { width: 38px; }
  .message-chat-header .message-avatar { width: 36px; height: 36px; }
  .messages-panel-empty .message-mobile-back { position: absolute; top: max(.65rem, env(safe-area-inset-top)); left: .5rem; }
  .messages-stream {
    min-height: 0;
    padding: .5rem max(.7rem, env(safe-area-inset-right)) .85rem max(.7rem, env(safe-area-inset-left));
    scroll-behavior: auto;
    overflow-anchor: none;
    background: color-mix(in srgb, var(--paper-2) 60%, var(--paper));
  }
  .message-list { gap: .45rem; }
  .message-bubble { max-width: 88%; min-width: 0; padding: .65rem .75rem .3rem; box-shadow: 0 2px 5px color-mix(in srgb, var(--deep) 4%, transparent); }
  .message-body { font-size: 1rem; line-height: 1.45; }
  .message-row.own .message-bubble { background: color-mix(in srgb, var(--brand) 18%, var(--paper)); }
  .message-date-separator { margin: .7rem 0; font-family: inherit; font-size: .72rem; letter-spacing: 0; text-transform: none; }
  .message-date-separator span { padding: .3rem .75rem; border-radius: 999px; background: var(--paper); }
  .message-date-separator::before,
  .message-date-separator::after { background: transparent; }
  .message-meta { flex-wrap: wrap; gap: .1rem .3rem; font-size: .65rem; }
  .message-reply,
  .message-delete { width: 36px; min-height: 36px; border-radius: 50%; opacity: .8; }
  .message-attachment { min-width: 0; max-width: 100%; min-height: 58px; }
  .message-attachment-copy strong { font-size: .85rem; }
  .message-todo-link { min-width: 0; }
  .message-reply-quote { min-height: 48px; }
  .message-load-older { min-height: 44px; }

  .message-composer {
    display: grid;
    flex: none;
    grid-template-columns: 44px minmax(0, 1fr) 44px;
    grid-template-rows: repeat(4, auto) minmax(44px, auto);
    align-items: end;
    gap: 0 .45rem;
    max-height: min(320px, 60%);
    padding: .55rem max(.65rem, env(safe-area-inset-right)) max(.55rem, env(safe-area-inset-bottom)) max(.65rem, env(safe-area-inset-left));
    overflow-y: auto;
    overscroll-behavior: contain;
    background: var(--paper);
  }
  .message-composer-main { display: contents; }
  .message-composer .message-attach-button,
  .message-send-hint,
  .message-send-label { display: none; }
  .message-composer-toggle {
    display: inline-flex;
    grid-row: 5;
    grid-column: 1;
    width: 44px;
    min-height: 44px;
    padding: 0;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--line);
    border-radius: 50%;
    color: var(--fg-2);
    background: var(--paper-2);
    font-size: 1.7rem;
    line-height: 1;
  }
  .message-composer-toggle::before { display: none; }
  .message-composer-toggle span { transition: transform .15s ease; }
  .has-composer-tools .message-composer-toggle { color: var(--brand-ink); border-color: var(--brand); }
  .has-composer-tools .message-composer-toggle span { transform: rotate(45deg); }
  .message-composer-tools {
    grid-row: 3;
    grid-column: 1 / -1;
    flex-wrap: wrap;
    gap: .5rem;
    padding: .15rem 0 .65rem;
  }
  .has-composer-tools .message-composer-tools { display: flex; }
  .message-composer-tools button {
    display: inline-flex;
    flex: 1;
    min-width: 0;
    min-height: 44px;
    padding: .5rem .55rem;
    align-items: center;
    justify-content: center;
    gap: .35rem;
    border: 1px solid var(--line);
    border-radius: 12px;
    color: var(--fg-2);
    background: var(--paper-2);
    font-size: .78rem;
    text-transform: none;
    letter-spacing: 0;
  }
  .message-composer-tools button[aria-pressed="true"],
  .message-composer-tools button[aria-expanded="true"] { border-color: var(--brand); background: color-mix(in srgb, var(--brand) 12%, var(--paper)); }
  .message-replying-banner { grid-row: 1; grid-column: 1 / -1; min-width: 0; margin-bottom: .5rem; }
  .message-selected-attachment { grid-row: 2; grid-column: 1 / -1; min-width: 0; margin-bottom: .5rem; }
  .message-replying-banner button,
  .message-selected-attachment button { width: 40px; min-height: 40px; flex: none; font-size: 1.15rem; }
  .message-replying-banner strong,
  .message-selected-copy strong { font-size: .8rem; }
  .message-todo-picker { display: none; grid-row: 4; grid-column: 1 / -1; grid-template-columns: auto minmax(0, 1fr); gap: .5rem; margin-bottom: .55rem; }
  .has-todo-picker .message-todo-picker { display: grid; }
  .message-todo-picker select { min-width: 0; min-height: 44px; font-size: 16px; }
  .message-rich-editor {
    grid-row: 5;
    grid-column: 2;
    min-width: 0;
    overflow: hidden;
    border-radius: 22px;
    border-color: var(--line);
    background: var(--paper-2);
  }
  .message-rich-editor:focus-within { border-color: color-mix(in srgb, var(--brand) 75%, var(--line)); }
  .message-rich-editor .rt-content { min-height: 44px; max-height: 132px; padding: .65rem .85rem; overflow-wrap: anywhere; font-size: 16px; line-height: 1.4; }
  .message-rich-editor .rt-content p:last-child { margin-bottom: 0; }
  .message-rich-editor .rt-toolbar { display: none; }
  .has-formatting .message-rich-editor { border-radius: 15px; }
  .has-formatting .message-rich-editor .rt-toolbar { display: flex; max-width: 100%; max-height: 48px; flex-wrap: nowrap; overflow-x: auto; overflow-y: hidden; padding: .15rem; }
  .message-rich-editor .rt-btn { flex: none; min-width: 40px; min-height: 40px; }
  .message-send {
    display: inline-flex;
    grid-row: 5;
    grid-column: 3;
    width: 44px;
    min-height: 44px;
    padding: 0;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    box-shadow: none;
  }
  .message-send-icon { display: block; flex: none; }
  .message-send:disabled { opacity: .4; }
  .message-composer[aria-busy="true"] .message-send { opacity: .65; }

  @media (prefers-reduced-motion: reduce) {
    .message-composer-toggle span { transition: none; }
  }
}