/* css/chat.css — Team Chat widget (saas_079 feature).
   The app is DARK by default (no data-theme attribute) and switches to LIGHT
   via html[data-theme="light"] (see theme-controller.js). So we define dark
   values as the default here and override them under [data-theme="light"].
   Local --tcc-* variables keep the rest of the file theme-agnostic. */

.tc-chat-launcher, .tc-chat-panel, .tc-chat-tip {
    --tcc-panel: #111827;
    --tcc-header: #161f2e;
    --tcc-page: #0b1120;
    --tcc-border: #1f2937;
    --tcc-border-strong: #374151;
    --tcc-text: #f1f5f9;
    --tcc-muted: #94a3b8;
    --tcc-input: #1f2937;
    --tcc-accent: #6366f1;
    --tcc-accent-hover: #4f46e5;
    --tcc-accent-fg: #ffffff;
    --tcc-accent-soft: rgba(99, 102, 241, 0.16);
    --tcc-accent-soft-border: rgba(99, 102, 241, 0.40);
    --tcc-success: #10b981;
    --tcc-danger: #f43f5e;
    --tcc-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}
html[data-theme="light"] .tc-chat-launcher,
html[data-theme="light"] .tc-chat-panel,
html[data-theme="light"] .tc-chat-tip {
    --tcc-panel: #ffffff;
    --tcc-header: #f8fafc;
    --tcc-page: #f5f7fa;
    --tcc-border: #e2e8f0;
    --tcc-border-strong: #cbd5e1;
    --tcc-text: #0f172a;
    --tcc-muted: #64748b;
    --tcc-input: #f1f5f9;
    --tcc-accent-soft: #eef2ff;
    --tcc-accent-soft-border: #c7d2fe;
    --tcc-shadow: 0 24px 60px rgba(15, 23, 42, 0.28);
}

.tc-chat-launcher {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 1200;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background: var(--tcc-accent);
    color: var(--tcc-accent-fg);
    cursor: pointer;
    box-shadow: var(--tcc-shadow);
    transition: transform .15s ease, background .15s ease;
}
.tc-chat-launcher:hover { background: var(--tcc-accent-hover); transform: translateY(-1px); }
.tc-chat-launcher:active { transform: translateY(0); }
.tc-chat-launcher svg { width: 22px; height: 22px; }

/* Hover tooltip with example questions + remaining quota */
.tc-chat-tip {
    position: fixed;
    right: 24px;
    bottom: 78px;
    z-index: 1202;
    width: 260px;
    max-width: calc(100vw - 32px);
    padding: 12px 14px;
    background: var(--tcc-panel);
    color: var(--tcc-text);
    border: 1px solid var(--tcc-border-strong);
    border-radius: 12px;
    box-shadow: var(--tcc-shadow);
    display: none;
    font: 400 12.5px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif;
}
.tc-chat-tip[data-open="true"] { display: block; }
.tc-chat-tip .tc-tip-title { font-weight: 700; font-size: 13px; margin-bottom: 6px; }
.tc-chat-tip .tc-tip-list { margin: 0; padding-left: 16px; color: var(--tcc-muted); }
.tc-chat-tip .tc-tip-list li { margin: 2px 0; }
.tc-chat-tip .tc-tip-quota {
    margin-top: 8px; padding-top: 8px; border-top: 1px solid var(--tcc-border);
    font-weight: 600; color: var(--tcc-accent);
}
.tc-chat-launcher .tc-unread {
    position: absolute;
    top: -4px; right: -4px;
    min-width: 18px; height: 18px;
    padding: 0 5px;
    border-radius: 9px;
    background: var(--tcc-danger);
    color: #fff;
    font-size: 11px; font-weight: 700; line-height: 18px;
    text-align: center;
    display: none;
}
.tc-chat-launcher[data-unread="true"] .tc-unread { display: block; }
.tc-chat-launcher[data-open="true"] { display: none; }

.tc-chat-panel {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 1201;
    width: 370px;
    max-width: calc(100vw - 32px);
    height: 540px;
    max-height: calc(100vh - 48px);
    display: none;
    flex-direction: column;
    min-height: 0;
    background: var(--tcc-panel);
    color: var(--tcc-text);
    border: 1px solid var(--tcc-border);
    border-radius: 16px;
    overflow: hidden;
    overscroll-behavior: contain;
    box-shadow: var(--tcc-shadow);
}
.tc-chat-panel[data-open="true"] { display: flex; }

/* Header */
.tc-chat-header {
    flex: 0 0 auto;
    position: relative;
    z-index: 3;
    padding: 12px 14px;
    border-bottom: 1px solid var(--tcc-border);
    background: var(--tcc-header);
}
.tc-chat-header-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.tc-chat-title-row { display: flex; align-items: center; gap: 8px; min-width: 0; }
.tc-chat-title { font-weight: 700; font-size: 15px; color: var(--tcc-text); }
.tc-chat-close {
    border: none; background: transparent; cursor: pointer;
    color: var(--tcc-muted); font-size: 20px; line-height: 1; padding: 4px; border-radius: 8px;
}
.tc-chat-close:hover { background: var(--tcc-border); color: var(--tcc-text); }
.tc-memory-btn {
    border: 1px solid var(--tcc-border);
    background: var(--tcc-accent-soft);
    color: var(--tcc-text);
    border-radius: 999px;
    padding: 3px 8px;
    font-size: 11px;
    font-weight: 700;
    cursor: pointer;
}
.tc-memory-btn:hover { border-color: var(--tcc-accent-soft-border); color: var(--tcc-accent); }

.tc-chat-presence { display: flex; align-items: center; gap: 6px; margin-top: 8px; min-height: 26px; flex-wrap: wrap; }
.tc-chat-presence .tc-avatar {
    width: 24px; height: 24px; border-radius: 50%;
    background: var(--tcc-accent-soft);
    color: var(--tcc-text);
    font-size: 10px; font-weight: 700;
    display: inline-flex; align-items: center; justify-content: center;
    border: 2px solid var(--tcc-panel);
    position: relative;
}
.tc-chat-presence .tc-avatar[data-status="online"]::after {
    content: ""; position: absolute; right: -1px; bottom: -1px;
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--tcc-success); border: 1.5px solid var(--tcc-panel);
}
.tc-chat-presence .tc-presence-empty { font-size: 12px; color: var(--tcc-muted); }

/* Tabs */
.tc-chat-tabs { display: flex; gap: 4px; margin-top: 10px; }
.tc-chat-tab {
    flex: 1; padding: 7px 10px; border: 1px solid var(--tcc-border);
    background: var(--tcc-panel); color: var(--tcc-muted);
    border-radius: 8px; font-size: 13px; font-weight: 600; cursor: pointer;
}
.tc-chat-tab[aria-selected="true"] {
    background: var(--tcc-accent); color: var(--tcc-accent-fg); border-color: var(--tcc-accent);
}

/* Messages */
.tc-chat-messages {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    touch-action: pan-y;
    padding: 12px 14px;
    display: flex; flex-direction: column; gap: 10px;
    background: var(--tcc-page);
}
.tc-msg { display: flex; flex-direction: column; gap: 2px; max-width: 88%; }
.tc-msg-meta { font-size: 11px; color: var(--tcc-muted); }
.tc-msg-bubble {
    padding: 8px 11px; border-radius: 12px;
    background: var(--tcc-panel); border: 1px solid var(--tcc-border);
    color: var(--tcc-text);
    font-size: 13.5px; line-height: 1.45; word-wrap: break-word; white-space: pre-wrap;
}
.tc-msg--self { align-self: flex-end; align-items: flex-end; }
.tc-msg--self .tc-msg-bubble { background: var(--tcc-accent); color: var(--tcc-accent-fg); border-color: var(--tcc-accent); }
.tc-msg--ai .tc-msg-bubble { background: var(--tcc-accent-soft); border-color: var(--tcc-accent-soft-border); color: var(--tcc-text); }
.tc-msg--ai .tc-ai-badge {
    display: inline-block; margin-right: 6px; padding: 1px 6px; border-radius: 6px;
    background: var(--tcc-accent); color: var(--tcc-accent-fg); font-size: 10px; font-weight: 700; vertical-align: middle;
}
.tc-msg .tc-mention { color: var(--tcc-accent); font-weight: 600; }
.tc-msg--self .tc-mention { color: #fff; text-decoration: underline; }
.tc-chat-empty { margin: auto; color: var(--tcc-muted); font-size: 13px; text-align: center; }

/* Edit / delete affordances (own messages) */
.tc-msg-edited { font-size: 10px; opacity: .7; }
.tc-msg-deleted { font-style: italic; color: var(--tcc-muted); background: transparent !important; border: 1px dashed var(--tcc-border) !important; }
/* Message actions float above the bubble so quick reactions never cover text. */
.tc-msg { position: relative; }
.tc-msg-actions {
    position: absolute; top: 4px; right: 4px;
    display: flex; align-items: center; gap: 4px;
    margin: 0; line-height: 0; z-index: 8;
    opacity: 0; transition: opacity .12s ease;
    pointer-events: none;
}
.tc-msg:not(.tc-msg--self) .tc-msg-actions {
    left: 4px;
    right: auto;
}
.tc-msg:hover .tc-msg-actions,
.tc-msg-actions:focus-within,
.tc-msg--actions-open .tc-msg-actions {
    opacity: 1;
    pointer-events: auto;
}
.tc-msg-menu-btn {
    background: rgba(15, 23, 42, .35); border: none; padding: 3px; cursor: pointer;
    color: #fff; border-radius: 7px; line-height: 0;
    transition: background .12s ease;
}
.tc-msg-menu-btn:hover { background: rgba(15, 23, 42, .6); }
@media (hover: hover) and (pointer: fine) {
    .tc-msg:hover,
    .tc-msg--actions-open {
        padding-top: 38px;
        margin-top: -38px;
    }
    .tc-msg:has(.tc-msg-actions:focus-within) {
        padding-top: 38px;
        margin-top: -38px;
    }
}
.tc-reaction-picker {
    display: flex;
    align-items: center;
    gap: 2px;
}
.tc-reaction-picker--hover {
    position: relative;
    padding: 2px;
    border: 1px solid var(--tcc-border-strong);
    border-radius: 999px;
    background: var(--tcc-panel);
    box-shadow: 0 10px 28px rgba(0, 0, 0, .28);
    backdrop-filter: blur(14px);
}
.tc-reaction-picker--hover::after {
    content: "";
    position: absolute;
    right: 18px;
    bottom: -5px;
    width: 8px;
    height: 8px;
    background: var(--tcc-panel);
    border-right: 1px solid var(--tcc-border-strong);
    border-bottom: 1px solid var(--tcc-border-strong);
    transform: rotate(45deg);
}
.tc-msg:not(.tc-msg--self) .tc-reaction-picker--hover::after {
    left: 18px;
    right: auto;
}
.tc-msg--reaction-picked .tc-reaction-picker--hover {
    display: none;
}
.tc-reaction-picker--menu {
    justify-content: center;
    padding: 2px;
}
@media (hover: hover) and (pointer: fine) and (min-width: 561px) {
    .tc-msg-menu .tc-reaction-picker--menu,
    .tc-msg-menu .tc-msg-menu-sep--reactions {
        display: none;
    }
}
.tc-reaction-option {
    width: 28px;
    height: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 999px;
    background: transparent;
    color: var(--tcc-text);
    font-size: 16px;
    line-height: 1;
    cursor: pointer;
    transition: background .12s ease, transform .12s ease;
}
.tc-reaction-picker--hover .tc-reaction-option {
    width: 24px;
    height: 24px;
    font-size: 15px;
}
.tc-reaction-option:hover,
.tc-reaction-option:active,
.tc-reaction-option.is-active {
    background: var(--tcc-accent-soft);
    transform: translateY(-1px);
}
.tc-reaction-option.is-active {
    box-shadow: inset 0 0 0 1px var(--tcc-accent-soft-border);
}
.tc-msg-reactions {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: 3px;
}
.tc-msg--self .tc-msg-reactions {
    justify-content: flex-end;
}
.tc-reaction-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    min-height: 24px;
    padding: 2px 7px;
    border: 1px solid var(--tcc-border);
    border-radius: 999px;
    background: var(--tcc-panel);
    color: var(--tcc-muted);
    font: 700 11px/1 system-ui, -apple-system, "Segoe UI", sans-serif;
    cursor: pointer;
    transition: background .12s ease, border-color .12s ease, color .12s ease, transform .12s ease;
}
.tc-reaction-chip:hover,
.tc-reaction-chip:active,
.tc-reaction-chip.is-active {
    background: var(--tcc-accent-soft);
    border-color: var(--tcc-accent-soft-border);
    color: var(--tcc-text);
}
.tc-reaction-chip:hover {
    transform: translateY(-1px);
}
.tc-reaction-emoji {
    font-size: 13px;
    line-height: 1;
}
.tc-reaction-count {
    min-width: 6px;
    text-align: center;
}
.tc-msg-menu {
    position: absolute; top: 100%; right: 0; margin-top: 8px;
    min-width: 168px; display: none; z-index: 12; overflow: hidden;
    padding: 4px;
    background: var(--tcc-panel); border: 1px solid var(--tcc-border-strong);
    border-radius: 12px; box-shadow: var(--tcc-shadow);
    backdrop-filter: blur(14px);
}
.tc-msg-menu.open { display: block; }
.tc-msg-menu[data-floating="true"] {
    position: fixed;
    top: var(--tc-menu-top, 0);
    left: var(--tc-menu-left, 0);
    right: auto;
    margin: 0;
    min-width: 156px;
    max-width: calc(100vw - 24px);
    overflow-y: auto;
    overscroll-behavior: contain;
    z-index: 1405;
}
.tc-msg-menu[data-placement="top"] { transform-origin: bottom right; }
.tc-msg-menu[data-placement="bottom"] { transform-origin: top right; }
.tc-msg-menu-sep {
    height: 1px;
    margin: 4px 2px;
    background: var(--tcc-border);
}
.tc-msg-menu-item {
    display: flex; align-items: center; width: 100%; min-height: 38px; text-align: left; background: transparent; border: none;
    padding: 8px 12px; font-size: 13px; font-weight: 600; color: var(--tcc-text); cursor: pointer;
    border-radius: 8px;
    transition: background .12s ease, color .12s ease;
}
.tc-msg-menu-item + .tc-msg-menu-item { margin-top: 2px; }
.tc-msg-menu-item:hover,
.tc-msg-menu-item:active { background: var(--tcc-accent-soft); }
.tc-msg-menu-item--danger { color: var(--tcc-danger); }
.tc-msg--actions-open .tc-msg-bubble { box-shadow: 0 0 0 2px var(--tcc-accent-soft-border); }
.tc-msg-attachments {
    display: flex;
    flex-direction: column;
    gap: 6px;
    max-width: 280px;
}
.tc-msg--self .tc-msg-attachments { align-items: flex-end; }
.tc-msg-attachment {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    min-width: 180px;
    max-width: 280px;
    padding: 8px;
    border: 1px solid var(--tcc-border);
    border-radius: 10px;
    background: var(--tcc-header);
    color: var(--tcc-text);
    text-decoration: none;
    overflow: hidden;
}
.tc-msg-attachment:hover { border-color: var(--tcc-accent-soft-border); background: var(--tcc-accent-soft); }
.tc-msg-attachment[aria-disabled="true"] { pointer-events: none; opacity: .75; }
.tc-msg-attachment--image {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 6px;
}
.tc-attachment-thumb {
    border: none;
    padding: 0;
    display: grid;
    place-items: center;
    width: 100%;
    aspect-ratio: 4 / 3;
    min-height: 92px;
    border-radius: 8px;
    overflow: hidden;
    background: var(--tcc-page);
    color: var(--tcc-muted);
    font-size: 12px;
    cursor: pointer;
}
.tc-attachment-thumb:disabled { cursor: wait; }
.tc-attachment-preview-btn:hover:not(:disabled) {
    outline: 2px solid var(--tcc-accent-soft-border);
    outline-offset: -2px;
}
.tc-attachment-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.tc-attachment-image-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    min-width: 0;
}
.tc-attachment-name {
    min-width: 0;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 12px;
    font-weight: 700;
}
.tc-attachment-image-row .tc-attachment-name { flex: 1 1 auto; }
.tc-attachment-download,
.tc-image-viewer-download {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 28px;
    padding: 4px 9px;
    border: 1px solid var(--tcc-border);
    border-radius: 999px;
    background: var(--tcc-input);
    color: var(--tcc-text);
    font-size: 11px;
    font-weight: 800;
    text-decoration: none;
}
.tc-attachment-download:hover,
.tc-image-viewer-download:hover {
    border-color: var(--tcc-accent-soft-border);
    background: var(--tcc-accent-soft);
}
.tc-attachment-download[aria-disabled="true"] {
    pointer-events: none;
    opacity: .55;
}
.tc-attachment-file-icon {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: 8px;
    background: var(--tcc-accent-soft);
    color: var(--tcc-accent);
}
.tc-attachment-file-text {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 1px;
}
.tc-attachment-size { color: var(--tcc-muted); font-size: 11px; }
.tc-msg-edit { display: flex; flex-direction: column; gap: 6px; width: 240px; max-width: 100%; }
.tc-msg-edit-input {
    resize: none; border: 1px solid var(--tcc-border); border-radius: 8px;
    background: var(--tcc-input); color: var(--tcc-text); padding: 6px 8px;
    font: 400 13px/1.4 system-ui, -apple-system, "Segoe UI", sans-serif;
}
.tc-msg-edit-input:focus { outline: none; border-color: var(--tcc-accent); }
.tc-msg-edit-row { display: flex; gap: 6px; justify-content: flex-end; }
.tc-msg-edit-save, .tc-msg-edit-cancel {
    font-size: 11px; padding: 3px 10px; border-radius: 6px; cursor: pointer;
    border: 1px solid var(--tcc-border); background: var(--tcc-panel); color: var(--tcc-text);
}
.tc-msg-edit-save { background: var(--tcc-accent); color: var(--tcc-accent-fg); border-color: var(--tcc-accent); }

/* Composer */
.tc-chat-composer {
    position: relative;
    z-index: 2;
    flex: 0 0 auto; display: flex; flex-wrap: wrap; align-items: flex-end; gap: 8px; padding: 10px 12px;
    border-top: 1px solid var(--tcc-border); background: var(--tcc-panel);
}
.tc-attachment-preview {
    flex: 0 0 100%;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.tc-attachment-preview[hidden] { display: none; }
.tc-attachment-status,
.tc-attachment-error {
    padding: 7px 9px;
    border-radius: 8px;
    font-size: 12px;
    line-height: 1.35;
}
.tc-attachment-status {
    border: 1px solid var(--tcc-border);
    background: var(--tcc-page);
    color: var(--tcc-muted);
}
.tc-attachment-error {
    border: 1px solid var(--tcc-danger);
    background: rgba(248, 113, 113, .08);
    color: var(--tcc-danger);
}
.tc-attachment-pending-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}
.tc-attachment-pending {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    max-width: 100%;
    padding: 5px 6px 5px 8px;
    border: 1px solid var(--tcc-border);
    border-radius: 999px;
    background: var(--tcc-page);
    color: var(--tcc-text);
}
.tc-attachment-pending-name {
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 12px;
    font-weight: 700;
}
.tc-attachment-pending-size { color: var(--tcc-muted); font-size: 11px; }
.tc-attachment-remove,
.tc-attach-btn {
    border: 1px solid var(--tcc-border);
    background: var(--tcc-input);
    color: var(--tcc-muted);
    cursor: pointer;
}
.tc-attachment-remove {
    width: 20px;
    height: 20px;
    border-radius: 999px;
    line-height: 1;
}
.tc-attach-btn {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 10px;
}
.tc-attachment-remove:hover,
.tc-attach-btn:hover { color: var(--tcc-text); border-color: var(--tcc-accent-soft-border); background: var(--tcc-accent-soft); }
.tc-attach-btn:disabled { cursor: wait; opacity: .65; }

.tc-image-viewer {
    position: absolute;
    inset: 0;
    z-index: 36;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 14px;
    background: rgba(2, 6, 23, .72);
    backdrop-filter: blur(10px);
}
.tc-image-viewer[hidden] { display: none; }
.tc-image-viewer-card {
    width: 100%;
    height: 100%;
    max-height: 100%;
    display: flex;
    flex-direction: column;
    gap: 10px;
    border: 1px solid var(--tcc-border-strong);
    border-radius: 14px;
    background: var(--tcc-panel);
    box-shadow: var(--tcc-shadow);
    overflow: hidden;
}
.tc-image-viewer-head {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 10px 12px;
    border-bottom: 1px solid var(--tcc-border);
}
.tc-image-viewer-name {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--tcc-text);
    font-size: 13px;
    font-weight: 800;
}
.tc-image-viewer-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}
.tc-image-viewer-close {
    border: none;
    border-radius: 999px;
    width: 30px;
    height: 30px;
    background: var(--tcc-border);
    color: var(--tcc-muted);
    cursor: pointer;
    font-size: 20px;
    line-height: 1;
}
.tc-image-viewer-close:hover {
    background: var(--tcc-accent-soft);
    color: var(--tcc-text);
}
.tc-image-viewer-img {
    flex: 1 1 auto;
    min-height: 0;
    width: 100%;
    object-fit: contain;
    background: var(--tcc-page);
}

.tc-memory-modal {
    position: absolute;
    inset: 0;
    z-index: 30;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 54px 12px 12px;
    background: rgba(2, 6, 23, .58);
    backdrop-filter: blur(8px);
}
.tc-memory-modal[hidden] { display: none; }
.tc-memory-card {
    width: 100%;
    max-height: 100%;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 12px;
    border: 1px solid var(--tcc-border-strong);
    border-radius: 14px;
    background: var(--tcc-panel);
    box-shadow: var(--tcc-shadow);
}
.tc-memory-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}
.tc-memory-head strong { color: var(--tcc-text); font-size: 14px; }
.tc-memory-count {
    display: block;
    margin-top: 2px;
    color: var(--tcc-muted);
    font-size: 11px;
}
.tc-memory-close {
    border: none;
    background: var(--tcc-border);
    color: var(--tcc-muted);
    border-radius: 999px;
    width: 30px;
    height: 30px;
    cursor: pointer;
    font-size: 18px;
    line-height: 1;
}
.tc-memory-close:hover { color: var(--tcc-text); background: var(--tcc-accent-soft); }
.tc-memory-help { margin: 0; color: var(--tcc-muted); font-size: 12px; }
.tc-memory-error {
    border: 1px solid var(--tcc-danger);
    border-radius: 8px;
    background: rgba(248, 113, 113, .08);
    border-color: color-mix(in srgb, var(--tcc-danger) 55%, transparent);
    background: color-mix(in srgb, var(--tcc-danger) 14%, transparent);
    color: var(--tcc-danger);
    padding: 7px 9px;
    font-size: 12px;
    line-height: 1.35;
}
.tc-memory-error[hidden] { display: none; }
.tc-memory-form { display: flex; flex-direction: column; gap: 8px; }
.tc-memory-input {
    width: 100%;
    min-height: 78px;
    resize: vertical;
    border: 1px solid var(--tcc-border);
    border-radius: 10px;
    background: var(--tcc-input);
    color: var(--tcc-text);
    padding: 9px 10px;
    font: 400 13px/1.4 system-ui, -apple-system, "Segoe UI", sans-serif;
}
.tc-memory-input:focus { outline: none; border-color: var(--tcc-accent); }
.tc-memory-actions { display: flex; justify-content: flex-end; gap: 8px; }
.tc-memory-save,
.tc-memory-cancel,
.tc-memory-row-actions button {
    border: 1px solid var(--tcc-border);
    border-radius: 8px;
    background: var(--tcc-panel);
    color: var(--tcc-text);
    padding: 6px 10px;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
}
.tc-memory-save {
    background: var(--tcc-accent);
    border-color: var(--tcc-accent);
    color: var(--tcc-accent-fg);
}
.tc-memory-save:disabled { opacity: .65; cursor: wait; }
.tc-memory-list {
    min-height: 0;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-right: 2px;
}
.tc-memory-empty {
    padding: 16px 10px;
    border: 1px dashed var(--tcc-border);
    border-radius: 10px;
    color: var(--tcc-muted);
    text-align: center;
    font-size: 12px;
}
.tc-memory-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 10px;
    padding: 9px;
    border: 1px solid var(--tcc-border);
    border-radius: 10px;
    background: var(--tcc-page);
}
.tc-memory-row p {
    margin: 0;
    color: var(--tcc-text);
    font-size: 12.5px;
    line-height: 1.4;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}
.tc-memory-row-actions {
    display: flex;
    flex-shrink: 0;
    gap: 5px;
}
.tc-memory-row-actions button:hover,
.tc-memory-cancel:hover { background: var(--tcc-accent-soft); border-color: var(--tcc-accent-soft-border); }
.tc-memory-row-actions .danger { color: var(--tcc-danger); }
.tc-chat-input {
    flex: 1; resize: none; max-height: 96px; min-height: 38px;
    padding: 9px 11px; border: 1px solid var(--tcc-border); border-radius: 10px;
    background: var(--tcc-input); color: var(--tcc-text);
    font: 400 13.5px/1.4 system-ui, -apple-system, "Segoe UI", sans-serif;
}
.tc-chat-input::placeholder { color: var(--tcc-muted); }
.tc-chat-input:focus { outline: none; border-color: var(--tcc-accent); }
.tc-chat-send {
    flex: 0 0 auto; width: 38px; height: 38px; align-self: flex-end;
    border: none; border-radius: 10px; background: var(--tcc-accent); color: var(--tcc-accent-fg); cursor: pointer;
    display: inline-flex; align-items: center; justify-content: center;
}
.tc-chat-send:hover { background: var(--tcc-accent-hover); }
.tc-chat-send:disabled { opacity: .5; cursor: default; }
.tc-chat-hint { font-size: 11px; color: var(--tcc-muted); padding: 0 14px 8px; background: var(--tcc-panel); }

/* Mention autocomplete popup */
.tc-mention-pop {
    position: absolute;
    left: 12px; right: 58px;
    bottom: calc(100% - 2px);
    background: var(--tcc-panel);
    border: 1px solid var(--tcc-border-strong);
    border-radius: 10px;
    box-shadow: var(--tcc-shadow);
    max-height: 180px; overflow-y: auto;
    display: none;
    z-index: 5;
}
.tc-mention-pop[data-open="true"] { display: block; }
.tc-mention-item {
    display: flex; align-items: center; gap: 8px;
    padding: 8px 11px; cursor: pointer; font-size: 13px; color: var(--tcc-text);
}
.tc-mention-item:hover, .tc-mention-item[data-active="true"] { background: var(--tcc-accent-soft); }
.tc-mention-item .tc-mi-at { color: var(--tcc-accent); font-weight: 700; }
.tc-mention-item .tc-mi-ai { margin-left: auto; font-size: 10px; font-weight: 700; color: var(--tcc-accent); }

/* ----- Mobile -----
   The app shows a fixed bottom nav (#mobile-bottom-nav, ~52px) and a create
   FAB (#mobile-fab, bottom ~60px / right 14px). Stack the chat launcher ABOVE
   the FAB, and make the panel a sheet that stops above the bottom nav so it
   stays usable. Keyed off the app's mobile flags (set on <html>) plus a width
   fallback for in-app webviews wider than a typical phone. */
@media (max-width: 560px) {
    body:has(.tc-chat-panel[data-open="true"]) { overflow: hidden; }
    .tc-chat-launcher { right: 14px; bottom: calc(116px + env(safe-area-inset-bottom, 0px)); }
    .tc-chat-tip { display: none !important; }
    body:has(.mobile-sheet.open) .tc-chat-launcher,
    body:has(.mobile-sheet-backdrop.open) .tc-chat-launcher,
    body:has(.mobile-sheet.open) .tc-chat-tip,
    body:has(.mobile-sheet-backdrop.open) .tc-chat-tip {
        display: none !important;
        pointer-events: none;
    }
    .tc-chat-panel {
        --tc-mobile-top: max(12px, env(safe-area-inset-top, 0px));
        --tc-mobile-bottom: calc(64px + max(12px, env(safe-area-inset-bottom, 0px)));
        top: var(--tc-mobile-top);
        left: max(8px, env(safe-area-inset-left, 0px));
        right: max(8px, env(safe-area-inset-right, 0px));
        bottom: var(--tc-mobile-bottom);
        width: auto; height: auto;
        max-height: calc(100vh - var(--tc-mobile-top) - var(--tc-mobile-bottom));
        max-height: calc(100dvh - var(--tc-mobile-top) - var(--tc-mobile-bottom));
        border-radius: 14px;
    }
    .tc-chat-header { padding: 10px 12px; touch-action: pan-y; }
    .tc-chat-header-top { min-height: 38px; gap: 8px; }
    .tc-chat-title { min-width: 0; }
    .tc-memory-btn { padding: 4px 8px; font-size: 11px; }
    .tc-memory-modal { padding: 46px 10px 10px; }
    .tc-image-viewer { padding: 10px; }
    .tc-memory-card { max-height: 100%; }
    .tc-chat-close {
        flex: 0 0 auto;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 38px;
        height: 38px;
        padding: 0;
        font-size: 24px;
    }
    .tc-chat-tabs { margin-top: 8px; }
    .tc-chat-messages { padding: 10px 12px 14px; gap: 8px; }
    .tc-msg { max-width: 88%; }
    .tc-msg-actions {
        top: 0;
        right: 0;
        width: 0;
        height: 0;
        transform: none;
        opacity: 1;
        z-index: 14;
    }
    .tc-msg-menu-btn {
        display: none;
    }
    .tc-reaction-picker--hover {
        display: none;
    }
    .tc-reaction-picker--menu {
        gap: 4px;
        padding: 4px 2px;
    }
    .tc-reaction-option {
        width: 38px;
        height: 38px;
        font-size: 20px;
    }
    .tc-reaction-chip {
        min-height: 28px;
        padding: 3px 8px;
    }
    .tc-msg-bubble[data-long-press-actions="true"],
    .tc-msg-attachments[data-long-press-actions="true"] {
        -webkit-touch-callout: none;
        user-select: none;
        touch-action: pan-y;
    }
    .tc-msg-menu-btn:active { background: var(--tcc-accent-soft); }
    .tc-msg-menu-item {
        min-height: 44px;
        padding: 10px 14px;
        font-size: 14px;
    }
    .tc-chat-hint { flex: 0 0 auto; }
    .tc-chat-composer {
        flex: 0 0 auto;
        position: relative;
        z-index: 4;
        padding: 10px 12px 12px;
    }
}

html[data-predetect="mobile"] .tc-chat-launcher,
html[data-device="mobile"] .tc-chat-launcher {
    right: 14px;
    bottom: calc(116px + env(safe-area-inset-bottom, 0px));
}
html[data-predetect="mobile"] .tc-chat-tip,
html[data-device="mobile"] .tc-chat-tip { display: none !important; }
html[data-predetect="mobile"] body:has(.mobile-sheet.open) .tc-chat-launcher,
html[data-predetect="mobile"] body:has(.mobile-sheet-backdrop.open) .tc-chat-launcher,
html[data-device="mobile"] body:has(.mobile-sheet.open) .tc-chat-launcher,
html[data-device="mobile"] body:has(.mobile-sheet-backdrop.open) .tc-chat-launcher,
body[data-device="mobile"]:has(.mobile-sheet.open) .tc-chat-launcher,
body[data-device="mobile"]:has(.mobile-sheet-backdrop.open) .tc-chat-launcher,
html[data-predetect="mobile"] body:has(.mobile-sheet.open) .tc-chat-tip,
html[data-predetect="mobile"] body:has(.mobile-sheet-backdrop.open) .tc-chat-tip,
html[data-device="mobile"] body:has(.mobile-sheet.open) .tc-chat-tip,
html[data-device="mobile"] body:has(.mobile-sheet-backdrop.open) .tc-chat-tip,
body[data-device="mobile"]:has(.mobile-sheet.open) .tc-chat-tip,
body[data-device="mobile"]:has(.mobile-sheet-backdrop.open) .tc-chat-tip {
    display: none !important;
    pointer-events: none;
}
html[data-predetect="mobile"] body:has(.tc-chat-panel[data-open="true"]),
html[data-device="mobile"] body:has(.tc-chat-panel[data-open="true"]) { overflow: hidden; }
html[data-predetect="mobile"] .tc-chat-panel,
html[data-device="mobile"] .tc-chat-panel {
    --tc-mobile-top: max(12px, env(safe-area-inset-top, 0px));
    --tc-mobile-bottom: calc(64px + max(12px, env(safe-area-inset-bottom, 0px)));
    top: var(--tc-mobile-top);
    left: max(8px, env(safe-area-inset-left, 0px));
    right: max(8px, env(safe-area-inset-right, 0px));
    bottom: var(--tc-mobile-bottom);
    width: auto; height: auto;
    max-height: calc(100vh - var(--tc-mobile-top) - var(--tc-mobile-bottom));
    max-height: calc(100dvh - var(--tc-mobile-top) - var(--tc-mobile-bottom));
    border-radius: 14px;
}
html[data-predetect="mobile"] .tc-chat-header,
html[data-device="mobile"] .tc-chat-header { padding: 10px 12px; touch-action: pan-y; }
html[data-predetect="mobile"] .tc-chat-header-top,
html[data-device="mobile"] .tc-chat-header-top { min-height: 38px; gap: 8px; }
html[data-predetect="mobile"] .tc-chat-title,
html[data-device="mobile"] .tc-chat-title { min-width: 0; }
html[data-predetect="mobile"] .tc-memory-btn,
html[data-device="mobile"] .tc-memory-btn { padding: 4px 8px; font-size: 11px; }
html[data-predetect="mobile"] .tc-memory-modal,
html[data-device="mobile"] .tc-memory-modal { padding: 46px 10px 10px; }
html[data-predetect="mobile"] .tc-image-viewer,
html[data-device="mobile"] .tc-image-viewer { padding: 10px; }
html[data-predetect="mobile"] .tc-memory-card,
html[data-device="mobile"] .tc-memory-card { max-height: 100%; }
html[data-predetect="mobile"] .tc-chat-close,
html[data-device="mobile"] .tc-chat-close {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    padding: 0;
    font-size: 24px;
}
html[data-predetect="mobile"] .tc-chat-tabs,
html[data-device="mobile"] .tc-chat-tabs { margin-top: 8px; }
html[data-predetect="mobile"] .tc-chat-messages,
html[data-device="mobile"] .tc-chat-messages { padding: 10px 12px 14px; gap: 8px; }
html[data-predetect="mobile"] .tc-msg,
html[data-device="mobile"] .tc-msg { max-width: 88%; }
html[data-predetect="mobile"] .tc-msg-actions,
html[data-device="mobile"] .tc-msg-actions {
    top: 0;
    right: 0;
    width: 0;
    height: 0;
    transform: none;
    opacity: 1;
    z-index: 14;
}
html[data-predetect="mobile"] .tc-msg-menu-btn,
html[data-device="mobile"] .tc-msg-menu-btn {
    display: none;
}
html[data-predetect="mobile"] .tc-reaction-picker--hover,
html[data-device="mobile"] .tc-reaction-picker--hover {
    display: none;
}
html[data-predetect="mobile"] .tc-reaction-picker--menu,
html[data-device="mobile"] .tc-reaction-picker--menu {
    gap: 4px;
    padding: 4px 2px;
}
html[data-predetect="mobile"] .tc-reaction-option,
html[data-device="mobile"] .tc-reaction-option {
    width: 38px;
    height: 38px;
    font-size: 20px;
}
html[data-predetect="mobile"] .tc-reaction-chip,
html[data-device="mobile"] .tc-reaction-chip {
    min-height: 28px;
    padding: 3px 8px;
}
html[data-predetect="mobile"] .tc-msg-bubble[data-long-press-actions="true"],
html[data-predetect="mobile"] .tc-msg-attachments[data-long-press-actions="true"],
html[data-device="mobile"] .tc-msg-bubble[data-long-press-actions="true"],
html[data-device="mobile"] .tc-msg-attachments[data-long-press-actions="true"] {
    -webkit-touch-callout: none;
    user-select: none;
    touch-action: pan-y;
}
html[data-predetect="mobile"] .tc-msg-menu-btn:active,
html[data-device="mobile"] .tc-msg-menu-btn:active { background: var(--tcc-accent-soft); }
html[data-predetect="mobile"] .tc-msg-menu-item,
html[data-device="mobile"] .tc-msg-menu-item {
    min-height: 44px;
    padding: 10px 14px;
    font-size: 14px;
}
html[data-predetect="mobile"] .tc-chat-hint,
html[data-device="mobile"] .tc-chat-hint { flex: 0 0 auto; }
html[data-predetect="mobile"] .tc-chat-composer,
html[data-device="mobile"] .tc-chat-composer {
    flex: 0 0 auto;
    position: relative;
    z-index: 4;
    padding: 10px 12px 12px;
}