label { display: block; font-size: 0.8rem; color: var(--dv-muted); margin-bottom: 0.35rem; }
button.primary {
    background: var(--dv-primary); color: var(--dv-on-primary); border: none; border-radius: 9999px; padding: 0.55rem 1.25rem;
    font-weight: 600; cursor: pointer; font-size: 0.9rem;
}
button.primary:disabled { opacity: 0.5; cursor: not-allowed; }
button.ghost {
    background: transparent; color: var(--dv-ghost-color); border: 1px solid var(--dv-ghost-border);
    border-radius: 9999px; padding: 0.45rem 1rem; font-weight: 600; cursor: pointer; font-size: 0.85rem;
}
button.ghost:hover { background: var(--dv-ghost-hover); }
.err { color: var(--dv-err); font-size: 0.85rem; margin-top: 0.5rem; }
.err a { color: var(--dv-link); text-decoration: underline; }
.src { font-size: 0.75rem; color: var(--dv-src); margin: 0.55rem 0 0 0; white-space: pre-wrap; }
.chat-greeting {
    max-width: 52rem;
    margin: 0 auto;
    padding: 1.5rem 1.25rem var(--dv-composer-overlay, 10.5rem);
    width: 100%;
    box-sizing: border-box;
    flex: 1;
    min-height: 0;
}
.chat-panel--empty {
    justify-content: center;
    gap: 1.25rem;
}
.chat-panel--empty .chat-greeting {
    flex: 0 0 auto;
    padding: 0 1.25rem;
}
.chat-panel--empty .chat-greeting__hello {
    font-size: 1.35rem;
}
.chat-panel--empty .chat-panel__section--composer {
    position: relative;
    left: auto;
    right: auto;
    bottom: auto;
    z-index: 1;
    padding-top: 0;
    padding-bottom: 0.5rem;
    background: none;
}
.chat-greeting__hello {
    font-size: 1.2rem;
    font-weight: 400;
    color: var(--dv-greeting-hello);
    margin: 0;
    line-height: 1.3;
}
.step-pick__title { font-size: 1.35rem; font-weight: 600; color: var(--dv-title); margin: 0 0 0.35rem 0; }
.step-pick__hint { color: var(--dv-muted); font-size: 0.9rem; margin: 0 0 1.25rem 0; line-height: 1.4; }
.team-select {
    width: 100%;
    max-width: 28rem;
    margin-bottom: 1rem;
    padding: 0.5rem;
    border-radius: 8px;
    border: 1px solid var(--dv-border);
    background: var(--dv-surface);
    color: var(--dv-page-text);
}
.system-list { display: flex; flex-direction: column; gap: 0.5rem; margin-bottom: 1.25rem; }
.system-option {
    display: flex; align-items: flex-start; gap: 0.65rem; padding: 0.75rem 0.85rem;
    border: 1px solid var(--dv-border); border-radius: 10px; cursor: pointer; background: var(--dv-surface);
}
.system-option:has(input:checked) { border-color: var(--dv-primary); background: var(--dv-checked-bg); }
.system-option input { margin-top: 0.2rem; accent-color: var(--dv-primary); }
.system-option__text { flex: 1; }
.system-option__name { font-weight: 600; color: var(--dv-page-text); font-size: 0.95rem; }
.system-option__id { font-size: 0.78rem; color: var(--dv-muted); font-family: ui-monospace, monospace; margin-top: 0.15rem; }

.chat-layout { position: relative; }
#step-chat:not([hidden]) {
    height: calc(100vh - var(--dv-app-header-offset, 65px) - var(--dv-app-footer-offset, 56px));
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    min-height: 0;
}
#step-chat:not([hidden]) .chat-layout {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
}
#step-chat:not([hidden]) .chat-panel {
    flex: 1;
    min-height: 0;
    overflow: hidden;
}
.recent-sidebar {
    position: fixed;
    left: 0;
    top: var(--dv-app-header-offset, 65px);
    bottom: var(--dv-app-footer-offset, 56px);
    width: 16.25rem;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    padding: 0.65rem 0.45rem 0.75rem 0.6rem;
    background: var(--dv-sidebar-panel-bg);
    border-right: 1px solid var(--dv-sidebar-rail-border);
    border-radius: 0;
    z-index: 2;
    transition: width 0.2s ease, padding 0.2s ease;
}
.recent-sidebar--collapsed {
    width: 3.25rem;
    padding-left: 0.35rem;
    padding-right: 0.35rem;
}
.recent-sidebar--collapsed .recent-sidebar__new-chat-label,
.recent-sidebar--collapsed .recent-sidebar__section-label,
.recent-sidebar--collapsed .recent-list,
.recent-sidebar--collapsed .recent-empty { display: none !important; }
.recent-sidebar--collapsed .recent-sidebar__toolbar { flex-direction: column; gap: 0.4rem; }
.recent-sidebar--collapsed .recent-sidebar__new-chat {
    justify-content: center;
    padding-left: 0.45rem;
    padding-right: 0.45rem;
}
.recent-sidebar__toolbar {
    display: flex;
    align-items: stretch;
    gap: 0.35rem;
    flex-shrink: 0;
    margin-bottom: 0.65rem;
}
.recent-sidebar__new-chat {
    flex: 1;
    min-width: 0;
    display: inline-flex;
    align-items: center;
    justify-content: flex-start;
    gap: 0.55rem;
    padding: 0.5rem 0.65rem;
    border-radius: 10px;
    border: 1px solid var(--dv-sidebar-new-chat-border);
    background: var(--dv-sidebar-new-chat-bg);
    color: var(--dv-page-text);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    font-family: inherit;
    transition: background 0.15s ease, border-color 0.15s ease;
}
.recent-sidebar__new-chat:hover {
    background: var(--dv-sidebar-new-chat-hover);
}
.recent-sidebar__new-chat:focus-visible {
    outline: 2px solid var(--dv-primary);
    outline-offset: 2px;
}
.recent-sidebar__new-chat-ico {
    flex-shrink: 0;
    opacity: 0.92;
}
.recent-sidebar__new-chat-label {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sidebar-toggle {
    width: 2.35rem;
    min-height: 2.35rem;
    border-radius: 10px;
    border: 1px solid var(--dv-sidebar-toggle-border);
    background: transparent;
    color: var(--dv-sidebar-toggle-color);
    cursor: pointer;
    display: inline-grid;
    place-items: center;
    flex-shrink: 0;
    transition: background 0.15s ease;
}
.sidebar-toggle:hover { background: var(--dv-sidebar-toggle-hover); }
.sidebar-toggle:focus-visible { outline: 2px solid var(--dv-primary); outline-offset: 2px; }
.recent-sidebar__section-label {
    margin: 0 0 0.4rem 0.35rem;
    padding: 0;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--dv-sidebar-section-label);
}
.recent-sidebar__list-wrap {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
}
.recent-list {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    padding: 0 0.15rem 0.35rem 0;
    scrollbar-width: thin;
    scrollbar-color: color-mix(in srgb, var(--dv-muted) 45%, transparent) transparent;
}
.recent-list::-webkit-scrollbar { width: 6px; }
.recent-list::-webkit-scrollbar-thumb {
    background: color-mix(in srgb, var(--dv-muted) 40%, transparent);
    border-radius: 999px;
}
.recent-item {
    border: none;
    border-radius: 10px;
    background: transparent;
    padding: 0;
    color: var(--dv-page-text);
    transition: background 0.12s ease;
    font-family: inherit;
}
.recent-item:hover { background: var(--dv-sidebar-item-hover); }
.recent-item--active {
    background: var(--dv-sidebar-item-active-bg);
}
.recent-item__content {
    flex: 1;
    min-width: 0;
    border: none;
    background: transparent;
    text-align: left;
    cursor: pointer;
    color: inherit;
    font-family: inherit;
    padding: 0.6rem 0.25rem 0.6rem 0.65rem;
}
.recent-item__row {
    display: flex;
    align-items: flex-start;
    gap: 0.35rem;
}
.recent-item__text {
    flex: 1;
    min-width: 0;
}
.recent-item__menu {
    position: relative;
    flex-shrink: 0;
    margin-right: 0.35rem;
    margin-top: 0.25rem;
}
.recent-item__menu-btn {
    width: 1.9rem;
    height: 1.9rem;
    border: none;
    background: transparent;
    border-radius: 8px;
    color: var(--dv-muted);
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
}
.recent-item__menu-btn:hover {
    background: var(--dv-sidebar-toggle-hover);
    color: var(--dv-page-text);
}
.recent-item__menu-btn:focus-visible { outline: 2px solid var(--dv-primary); outline-offset: 2px; }
.recent-item__menu-list {
    position: absolute;
    top: 2rem;
    right: 0;
    min-width: 11.5rem;
    border: 1px solid var(--dv-border);
    border-radius: 10px;
    background: var(--dv-surface);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.16);
    padding: 0.25rem;
    display: none;
    z-index: 5;
}
.recent-item__menu-list--open { display: block; }
.recent-item__menu-action {
    width: 100%;
    border: none;
    background: transparent;
    text-align: left;
    cursor: pointer;
    color: var(--dv-page-text);
    font-family: inherit;
    font-size: 0.84rem;
    border-radius: 8px;
    padding: 0.45rem 0.5rem;
}
.recent-item__menu-action:hover { background: var(--dv-sidebar-item-hover); }
.recent-item__menu-action--danger { color: var(--dv-err); }
.recent-item__title {
    font-size: 0.875rem;
    font-weight: 400;
    line-height: 1.35;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.recent-item--active .recent-item__title { font-weight: 500; }
.recent-item__meta {
    font-size: 0.78rem;
    color: var(--dv-muted);
    margin-top: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.35;
}
.recent-item__system {
    color: var(--dv-page-text);
    font-weight: 600;
    font-size: 0.8rem;
    opacity: 0.92;
}
.recent-item--active .recent-item__system {
    color: color-mix(in srgb, var(--dv-primary) 72%, var(--dv-page-text));
    opacity: 1;
}
.recent-item__meta-pin {
    font-size: 0.86rem;
    vertical-align: -0.16rem;
    margin: 0 0.15rem;
    color: color-mix(in srgb, var(--dv-primary) 78%, var(--dv-muted));
}
.recent-empty {
    font-size: 0.8125rem;
    color: var(--dv-muted);
    padding: 0.75rem 0.5rem;
    margin: 0;
    line-height: 1.45;
    text-align: center;
}

.chat-page-contained {
    max-width: 52rem;
    margin: 0 auto;
    padding: 1.25rem;
    box-sizing: border-box;
}
.chat-panel {
    position: relative;
    min-width: 0;
    margin-left: 16.25rem;
    transition: margin-left 0.2s ease;
    display: flex;
    flex-direction: column;
    min-height: calc(100vh - var(--dv-app-header-offset, 65px) - var(--dv-app-footer-offset, 56px));
    box-sizing: border-box;
    --dv-composer-overlay: 10.5rem;
}
.chat-panel--expanded { margin-left: 3.25rem; }
.chat-panel__section--composer {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 4;
    max-width: 52rem;
    margin: 0 auto;
    padding: 0.75rem calc(1.25rem + 10px) 1.15rem 1.25rem;
    width: 100%;
    box-sizing: border-box;
    pointer-events: none;
    background: linear-gradient(
        to top,
        color-mix(in srgb, var(--dv-page-bg) 88%, transparent) 0%,
        color-mix(in srgb, var(--dv-page-bg) 35%, transparent) 55%,
        transparent 100%
    );
}
.chat-panel__section--composer .composer {
    pointer-events: auto;
}
.composer__system {
    position: absolute;
    left: 1.2rem;
    right: 4rem;
    bottom: 1.1rem;
    margin: 0;
    color: var(--dv-muted);
    font-size: 0.88rem;
    line-height: 1.3;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.composer {
    position: relative;
    display: flex;
    flex-direction: column;
    min-height: 7.5rem;
    border-radius: 1.5rem;
    border: 1px solid var(--dv-composer-border, var(--dv-border));
    background: var(--dv-composer-bg, var(--dv-surface));
    box-shadow: var(--dv-composer-shadow, none);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.composer:focus-within {
    border-color: color-mix(in srgb, var(--dv-border) 55%, var(--dv-primary));
    box-shadow: 0 0 0 1px color-mix(in srgb, var(--dv-primary) 28%, transparent);
}
.composer__input {
    flex: 1;
    width: 100%;
    min-height: 4.5rem;
    max-height: 12rem;
    box-sizing: border-box;
    margin: 0;
    padding: 1.05rem 1.2rem 3.1rem;
    border: none;
    border-radius: inherit;
    background: transparent;
    color: var(--dv-page-text);
    font: inherit;
    font-size: 0.98rem;
    line-height: 1.45;
    resize: none;
    overflow-y: auto;
    outline: none;
    scrollbar-width: thin;
    scrollbar-color: color-mix(in srgb, var(--dv-muted) 45%, transparent) transparent;
}
.composer__input::placeholder {
    color: var(--dv-muted);
    opacity: 1;
}
.composer__send {
    position: absolute;
    right: 0.85rem;
    bottom: 0.85rem;
    width: 2.15rem;
    height: 2.15rem;
    padding: 0;
    border: none;
    border-radius: 9999px;
    background: var(--dv-composer-send-bg, #f4f4f5);
    color: var(--dv-composer-send-fg, #111113);
    cursor: pointer;
    display: inline-grid;
    place-items: center;
    transition: background 0.15s ease, opacity 0.15s ease, transform 0.12s ease;
}
.composer__send:hover:not(:disabled) {
    background: var(--dv-composer-send-hover, #ffffff);
    transform: scale(1.04);
}
.composer__send:focus-visible {
    outline: 2px solid var(--dv-primary);
    outline-offset: 2px;
}
.composer__send:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    transform: none;
}
.composer__send-ico {
    font-size: 1.2rem;
    font-variation-settings: 'FILL' 0, 'wght' 500, 'GRAD' 0, 'opsz' 24;
}
.chat-thread-viewport {
    flex: 1;
    min-height: 0;
    width: 100%;
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-gutter: stable;
    scrollbar-width: thin;
    scrollbar-color: color-mix(in srgb, var(--dv-muted) 50%, transparent) transparent;
    padding-right: 0;
    padding-bottom: var(--dv-composer-overlay, 10.5rem);
    margin-right: 0;
}
.chat-thread-viewport::-webkit-scrollbar { width: 10px; }
.chat-thread-viewport::-webkit-scrollbar-track { background: transparent; margin: 8px 0; }
.chat-thread-viewport::-webkit-scrollbar-thumb {
    background: color-mix(in srgb, var(--dv-muted) 45%, transparent);
    border-radius: 999px;
    border: 3px solid transparent;
    background-clip: padding-box;
}
.chat-thread-viewport::-webkit-scrollbar-thumb:hover {
    background: color-mix(in srgb, var(--dv-muted) 65%, transparent);
    background-clip: padding-box;
}
.thread-column {
    max-width: 52rem;
    margin: 0 auto;
    padding: 1rem 1.25rem 1rem;
    box-sizing: border-box;
}
.thread {
    display: flex;
    flex-direction: column;
    gap: 1.1rem;
    margin: 0;
    overflow: visible;
    box-sizing: border-box;
}
.msg {
    white-space: pre-wrap;
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--dv-page-text);
    max-width: 100%;
    box-sizing: border-box;
}
.msg__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.6rem;
    margin-bottom: 0.35rem;
}
.msg--user {
    border: 1px solid var(--dv-msg-user-border);
    border-radius: 14px;
    padding: 1rem 1.15rem;
    background: var(--dv-surface-3);
    margin-left: 8%;
    margin-right: 0;
}
.msg--assistant {
    border: none;
    border-radius: 0;
    padding: 0.15rem 0.15rem 0.35rem;
    background: transparent;
    margin-right: 0;
    margin-left: 0;
}
.msg__label { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.03em; color: var(--dv-muted); }
.msg__actions {
    display: flex;
    align-items: center;
    gap: 0.15rem;
    margin-top: 0.75rem;
    padding-top: 0.15rem;
}
.msg__action {
    border: none;
    background: transparent;
    color: var(--dv-muted);
    border-radius: 8px;
    width: 2rem;
    height: 2rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease;
    padding: 0;
}
.msg__action:hover {
    background: color-mix(in srgb, var(--dv-page-text) 8%, transparent);
    color: var(--dv-page-text);
}
.msg__action:focus-visible {
    outline: 2px solid var(--dv-primary);
    outline-offset: 2px;
}
.msg__action:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}
.msg__action--ok,
.msg__action--active {
    color: var(--dv-page-text);
}
.msg__action--active {
    color: var(--dv-primary);
}
.msg__action--active .msg__action-ico {
    font-variation-settings: 'FILL' 1, 'wght' 500, 'GRAD' 0, 'opsz' 24;
}
.msg__action-ico {
    font-size: 1.15rem;
}
.msg__loading { color: var(--dv-muted); font-style: italic; }
.msg__markdown { white-space: normal; }
.msg__markdown p { margin: 0 0 0.65rem 0; }
.msg__markdown p:last-child { margin-bottom: 0; }
.msg__markdown ul, .msg__markdown ol { margin: 0 0 0.65rem 1.15rem; padding: 0; }
.msg__markdown li { margin: 0.2rem 0; }
.msg__markdown code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
    font-size: 0.84rem;
    background: color-mix(in srgb, var(--dv-surface) 70%, transparent);
    padding: 0.1rem 0.35rem;
    border-radius: 6px;
}
.msg__markdown pre {
    margin: 0.7rem 0;
    padding: 0.75rem 0.85rem;
    border-radius: 10px;
    border: 1px solid var(--dv-border);
    background: color-mix(in srgb, var(--dv-surface) 85%, transparent);
    overflow-x: auto;
    white-space: pre;
}
.msg__markdown pre code {
    background: transparent;
    padding: 0;
    border-radius: 0;
    font-size: 0.82rem;
}
.msg__markdown .mermaid-viewer {
    position: relative;
    margin: 0.85rem 0;
    min-height: 14rem;
    overflow-x: auto;
    border-radius: 10px;
    border: 1px solid var(--dv-border);
    background: color-mix(in srgb, var(--dv-surface) 90%, transparent);
}
.msg__markdown .mermaid {
    min-height: 14rem;
    margin: 0;
    padding: 1.25rem 3.5rem 1.25rem 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-x: auto;
    text-align: center;
}
.msg__markdown .mermaid svg {
    max-width: 100%;
    height: auto;
}
.msg__markdown .mermaid-viewer:not(:fullscreen) .mermaid svg {
    max-width: 92%;
    max-height: 24rem;
}
.msg__markdown .mermaid-fullscreen {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    width: 2.1rem;
    height: 2.1rem;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--dv-text);
    background: color-mix(in srgb, var(--dv-surface) 75%, transparent);
    border: 1px solid var(--dv-border);
    border-radius: 7px;
    cursor: pointer;
    opacity: 0.78;
    z-index: 2;
}
.msg__markdown .mermaid-fullscreen:hover,
.msg__markdown .mermaid-fullscreen:focus-visible {
    opacity: 1;
    background: var(--dv-surface);
}
.msg__markdown .mermaid-fullscreen .material-symbols-rounded {
    font-size: 1.15rem;
}
.msg__markdown .mermaid-toolbar {
    display: none;
}
.msg__markdown .mermaid-viewer:fullscreen {
    width: 100vw;
    height: 100vh;
    margin: 0;
    padding: 1.25rem;
    display: flex;
    align-items: stretch;
    background: var(--dv-page-bg);
    border: 0;
    border-radius: 0;
}
.msg__markdown .mermaid-viewer:fullscreen .mermaid {
    width: 100%;
    min-height: 100%;
    padding: 2.5rem;
    overflow: auto;
    cursor: grab;
    touch-action: none;
    user-select: none;
}
.msg__markdown .mermaid-viewer:fullscreen .mermaid svg {
    width: 100%;
    height: 100%;
    max-height: calc(100vh - 5rem);
    transform:
        translate(var(--mermaid-pan-x, 0), var(--mermaid-pan-y, 0))
        scale(var(--mermaid-zoom, 1));
    transform-origin: center center;
    transition: transform 140ms ease;
}
.msg__markdown .mermaid-viewer:fullscreen.mermaid-viewer--panning .mermaid {
    cursor: grabbing;
}
.msg__markdown .mermaid-viewer:fullscreen.mermaid-viewer--panning .mermaid svg {
    transition: none;
}
.msg__markdown .mermaid-viewer:fullscreen .mermaid-fullscreen {
    display: none;
}
.msg__markdown .mermaid-viewer:fullscreen .mermaid-toolbar {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.25rem;
    display: inline-flex;
    align-items: center;
    gap: 0.1rem;
    background: color-mix(in srgb, var(--dv-surface) 88%, transparent);
    border: 1px solid var(--dv-border);
    border-radius: 8px;
    box-shadow: 0 4px 16px rgb(0 0 0 / 22%);
    z-index: 3;
}
.msg__markdown .mermaid-tool {
    width: 2rem;
    height: 2rem;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--dv-muted);
    background: transparent;
    border: 0;
    border-radius: 6px;
    cursor: pointer;
}
.msg__markdown .mermaid-tool:hover,
.msg__markdown .mermaid-tool:focus-visible {
    color: var(--dv-text);
    background: color-mix(in srgb, var(--dv-text) 9%, transparent);
}
.msg__markdown .mermaid-tool .material-symbols-rounded {
    font-size: 1.15rem;
}
.msg__markdown .mermaid-fallback {
    margin: 0.7rem 0;
    padding: 0.55rem 0.75rem;
    border-radius: 10px;
    border: 1px solid color-mix(in srgb, #b42318 35%, var(--dv-border));
    background: color-mix(in srgb, #b42318 6%, var(--dv-surface));
}
.msg__markdown .mermaid-fallback summary {
    cursor: pointer;
    color: #b42318;
    font-size: 0.85rem;
}
.msg__markdown .mermaid-fallback pre {
    margin: 0.55rem 0 0.15rem 0;
}
.msg details { margin-top: 0.6rem; }
.msg summary { cursor: pointer; color: var(--dv-summary); font-size: 0.8rem; }

@media (max-width: 980px) {
    .recent-sidebar {
        position: fixed;
        left: 0;
        top: var(--dv-app-header-offset, 65px);
        bottom: var(--dv-app-footer-offset, 56px);
        width: 14rem !important;
        max-height: none;
        border-right: 1px solid var(--dv-sidebar-rail-border);
        border-bottom: none;
        border-radius: 0;
        margin: 0;
        padding: 0.65rem 0.45rem 0.75rem 0.6rem;
    }
    .recent-sidebar--collapsed {
        width: 3.25rem !important;
        padding: 0.65rem 0.35rem;
    }
    .chat-panel { margin-left: 14rem; margin-top: 0; min-height: calc(100vh - var(--dv-app-header-offset, 65px) - var(--dv-app-footer-offset, 56px)); }
    .chat-panel--expanded { margin-left: 3.25rem; }
    #step-chat:not([hidden]) { height: calc(100vh - var(--dv-app-header-offset, 65px) - var(--dv-app-footer-offset, 56px)); min-height: 0; }
    #step-chat:not([hidden]) .chat-layout { display: flex; }
    #step-chat:not([hidden]) .chat-panel { overflow: hidden; }
    .chat-panel__section--composer {
        padding-right: calc(1.25rem + 8px);
    }
    .msg--user { margin-left: 3%; }
    .msg--assistant { margin-right: 0; }
}