/* /chats — premium chat browser. Mobile rules in mobile.css. */

/* ── Container ─────────────────────────────────────────────────── */
.chats-page {
    flex: 1;
    min-height: 0;
    width: 100%;
    max-width: 880px;
    margin: 0 auto;
    padding: 48px 32px 0;
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    font-feature-settings: 'cv11', 'ss01';
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    display: none;
    flex-direction: column;
    overflow: hidden;  /* the inner scroll container handles scrolling */
}

.chats-page.is-visible {
    display: flex;
}

/* ── The ONLY scrolling element on the page ────────────────────── */
.chats-page__scroll {
    flex: 1;
    min-height: 0;
    overflow-y: scroll;
    overflow-x: hidden;
    padding-bottom: 96px;
    /* Prevent pull-to-refresh: when the user scrolls down at the top
       of the list, the browser would otherwise trigger a page refresh.
       `overscroll-behavior-y: contain` keeps the scroll inside this
       container — no refresh gesture, no bounce-chaining to the body. */
    overscroll-behavior-y: contain;
    overscroll-behavior-x: none;
    -webkit-overflow-scrolling: touch;
    /* Hidden scrollbar — Firefox + WebKit + Edge */
    scrollbar-width: none;
    -ms-overflow-style: none;
    scrollbar-gutter: stable;
}
.chats-page__scroll::-webkit-scrollbar {
    width: 0;
    height: 0;
    display: none;
}

/* Server renders <body data-initial-surface="chats"> when the request is
   for /chats — match this BEFORE JS runs so we never flash the home
   chat-shell during the initial paint. After JS boots, .chats-page-open
   is added on body and these rules continue to apply. */
body.chats-page-open .chat-shell__header,
body.chats-page-open .chat-shell__messages,
body.chats-page-open .chat-shell__composer,
body[data-initial-surface="chats"] .chat-shell__header,
body[data-initial-surface="chats"] .chat-shell__messages,
body[data-initial-surface="chats"] .chat-shell__composer {
    display: none !important;
}

body.chats-page-open .chat-shell,
body[data-initial-surface="chats"] .chat-shell {
    overflow: hidden;
    min-height: 0;
}

/* Show the chats surface immediately on initial paint — JS still adds
   .is-visible later but this prevents the empty-flash before that. */
body[data-initial-surface="chats"] .chats-page {
    display: flex;
}

/* ── Header (fixed at top of chats-page, no scroll) ────────────── */
.chats-page__header {
    display: flex;
    flex-direction: column;
    gap: 22px;
    margin-bottom: 8px;
    padding-bottom: 16px;
    flex-shrink: 0;
    background: var(--bg-primary);
}

.chats-page__title {
    font-size: 32px;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin: 0;
    color: var(--text-primary);
}

.chats-page__search {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    background: var(--bg-input);
    border: 1px solid var(--border-primary);
    border-radius: 14px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.chats-page__search:hover {
    border-color: var(--text-tertiary);
}

.chats-page__search:focus-within {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 4px var(--accent-muted);
    background: color-mix(in srgb, var(--bg-input) 96%, var(--accent) 4%);
}

.chats-page__search svg {
    color: var(--text-tertiary);
    flex-shrink: 0;
    transition: color 0.2s ease;
}

.chats-page__search:focus-within svg {
    color: var(--text-secondary);
}

.chats-page__search input {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 15px;
    outline: none;
    padding: 0;
    font-family: inherit;
    letter-spacing: -0.005em;
}

.chats-page__search input::placeholder {
    color: var(--text-tertiary);
}

/* ── Toolbar ───────────────────────────────────────────────────── */
.chats-page__toolbar {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    flex-wrap: nowrap;
    /* Fixed in the chats-page header band — never scrolls.
       Sits below the bulk toolbar in DOM/visual order. */
    flex-shrink: 0;
    padding-top: 4px;
    padding-bottom: 12px;
    background: var(--bg-primary);
    box-shadow: 0 8px 12px -10px color-mix(in srgb, var(--text-primary) 16%, transparent);
}

.chats-page__filters {
    display: flex;
    gap: 6px;
    flex-wrap: nowrap;
    align-items: center;
    min-width: 0;
    flex: 1;
}

.chats-filter-divider {
    width: 1px;
    height: 18px;
    background: var(--border-primary);
    margin: 0 4px;
    flex-shrink: 0;
}

/* ── Quick toggle pills (star, artifact, attachment) ──────────── */
.chats-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-primary);
    border-radius: 999px;
    padding: 6px 12px 6px 10px;
    font-size: 12.5px;
    font-weight: 500;
    cursor: pointer;
    font-family: inherit;
    line-height: 1.2;
    letter-spacing: -0.005em;
    white-space: nowrap;
    transition: background 0.15s ease, color 0.15s ease,
                border-color 0.15s ease, transform 0.08s ease,
                box-shadow 0.15s ease;
}

.chats-toggle__icon {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
    transition: color 0.15s ease, transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.chats-toggle:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--text-tertiary);
}

.chats-toggle:hover .chats-toggle__icon {
    transform: scale(1.1);
}

.chats-toggle:active {
    transform: scale(0.97);
}

.chats-toggle:focus-visible {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-muted);
}

.chats-toggle.is-active {
    background: var(--accent-muted);
    color: var(--text-primary);
    border-color: var(--accent-translucent);
    box-shadow: inset 0 0 0 1px var(--accent-translucent);
}

.chats-toggle.is-active .chats-toggle__icon {
    color: var(--accent);
}

/* Star toggle: gold treatment when active */
.chats-toggle[data-filter="starred"].is-active {
    background: rgba(251, 191, 36, 0.12);
    border-color: rgba(251, 191, 36, 0.45);
    box-shadow: inset 0 0 0 1px rgba(251, 191, 36, 0.25);
}

.chats-toggle[data-filter="starred"].is-active .chats-toggle__icon {
    color: #fbbf24;
    fill: #fbbf24;
    filter: drop-shadow(0 0 4px rgba(251, 191, 36, 0.4));
}

body.light-theme .chats-toggle[data-filter="starred"].is-active {
    background: rgba(217, 119, 6, 0.1);
    border-color: rgba(217, 119, 6, 0.45);
    box-shadow: inset 0 0 0 1px rgba(217, 119, 6, 0.3);
}

body.light-theme .chats-toggle[data-filter="starred"].is-active .chats-toggle__icon {
    color: #d97706;
    fill: #d97706;
}

/* ── Custom dropdowns (model, date, sort) ─────────────────────── */
.chats-dropdown {
    position: relative;
    display: inline-flex;
}

.chats-dropdown__btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-primary);
    border-radius: 999px;
    padding: 6px 10px 6px 11px;
    font-size: 12.5px;
    font-weight: 500;
    cursor: pointer;
    font-family: inherit;
    line-height: 1.2;
    letter-spacing: -0.005em;
    white-space: nowrap;
    max-width: 220px;
    transition: background 0.15s ease, color 0.15s ease,
                border-color 0.15s ease, transform 0.08s ease,
                box-shadow 0.15s ease;
}

.chats-dropdown__icon {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
    color: var(--text-tertiary);
    transition: color 0.15s ease;
}

.chats-dropdown__label {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chats-dropdown__chevron {
    width: 12px;
    height: 12px;
    flex-shrink: 0;
    color: var(--text-tertiary);
    transition: transform 0.2s cubic-bezier(0.2, 0, 0, 1), color 0.15s ease;
}

.chats-dropdown__btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--text-tertiary);
}

.chats-dropdown__btn:hover .chats-dropdown__icon,
.chats-dropdown__btn:hover .chats-dropdown__chevron {
    color: var(--text-secondary);
}

.chats-dropdown__btn:active {
    transform: scale(0.97);
}

.chats-dropdown__btn:focus-visible {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-muted);
}

.chats-dropdown.is-open .chats-dropdown__btn {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--text-tertiary);
}

.chats-dropdown.is-open .chats-dropdown__chevron {
    transform: rotate(180deg);
}

.chats-dropdown.is-active:not(.is-open) .chats-dropdown__btn {
    background: var(--accent-muted);
    color: var(--text-primary);
    border-color: var(--accent-translucent);
    box-shadow: inset 0 0 0 1px var(--accent-translucent);
}

.chats-dropdown.is-active .chats-dropdown__icon,
.chats-dropdown.is-active .chats-dropdown__chevron {
    color: var(--accent);
}

/* ── Dropdown popover menu ─────────────────────────────────────── */
.chats-dropdown__menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    z-index: 50;
    min-width: 200px;
    max-width: 280px;
    padding: 5px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-primary);
    border-radius: 12px;
    box-shadow:
        0 16px 40px -12px rgba(0, 0, 0, 0.5),
        0 6px 16px -6px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 0 color-mix(in srgb, var(--text-primary) 6%, transparent);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transform-origin: top left;
    animation: dropdown-pop 0.18s cubic-bezier(0.2, 0, 0, 1);
    max-height: 320px;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--text-tertiary) transparent;
}

.chats-dropdown--sort {
    flex-shrink: 0;
}

.chats-dropdown--sort .chats-dropdown__menu {
    left: auto;
    right: 0;
    transform-origin: top right;
    min-width: 200px;
}

/* Sort dropdown gets a slightly heavier visual weight to read as
   "primary view control" vs. the lighter filter chips next to it */
.chats-dropdown--sort .chats-dropdown__btn {
    background: var(--bg-tertiary);
    border-color: var(--border-secondary);
}

.chats-dropdown--sort .chats-dropdown__btn:hover {
    background: var(--bg-hover);
    border-color: var(--text-tertiary);
}

.chats-dropdown__sort-prefix {
    color: var(--text-tertiary);
    font-weight: 500;
    margin-right: -2px;  /* tighten spacing before label */
}

@keyframes dropdown-pop {
    from { opacity: 0; transform: scale(0.94) translateY(-4px); }
    to   { opacity: 1; transform: scale(1) translateY(0); }
}

.chats-dropdown__item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    width: 100%;
    background: none;
    border: none;
    padding: 8px 10px;
    text-align: left;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    font-family: inherit;
    border-radius: 8px;
    transition: background 0.12s ease, color 0.12s ease;
    letter-spacing: -0.005em;
    line-height: 1.3;
}

.chats-dropdown__item-label {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
}

.chats-dropdown__item:hover {
    background: var(--bg-hover);
}

.chats-dropdown__item.is-selected {
    color: var(--accent);
    background: var(--accent-muted);
}

.chats-dropdown__check {
    flex-shrink: 0;
    color: var(--accent);
}

.chats-dropdown__empty {
    padding: 12px 14px;
    font-size: 13px;
    color: var(--text-tertiary);
    text-align: center;
}

/* ── Custom date range inputs (inside date dropdown) ──────────── */
.chats-date-custom {
    display: none;
    flex-direction: column;
    gap: 8px;
    padding: 10px 8px 6px;
    margin-top: 4px;
    border-top: 1px solid var(--border-secondary);
}

.chats-date-custom.is-open {
    display: flex;
}

.chats-date-custom__field {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0 4px;
}

.chats-date-custom__field span {
    flex-shrink: 0;
}

.chats-date-custom__field input {
    flex: 1;
    background: var(--bg-input);
    border: 1px solid var(--border-primary);
    border-radius: 6px;
    color: var(--text-primary);
    font: inherit;
    font-size: 12px;
    padding: 5px 8px;
    outline: none;
    color-scheme: light dark;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
    min-width: 0;
}

.chats-date-custom__field input:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-muted);
}

body.dark-theme .chats-date-custom__field input { color-scheme: dark; }
body.light-theme .chats-date-custom__field input { color-scheme: light; }

/* ── Clear-all button ─────────────────────────────────────────── */
.chats-clear-all {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-primary);
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    font-family: inherit;
    flex-shrink: 0;  /* never shrink — always fully visible */
    transition: color 0.15s ease, background 0.15s ease,
                border-color 0.15s ease, transform 0.08s ease;
    letter-spacing: -0.005em;
    animation: clear-fade-in 0.2s ease;
    white-space: nowrap;
}

@keyframes clear-fade-in {
    from { opacity: 0; transform: translateX(-4px); }
    to   { opacity: 1; transform: translateX(0); }
}

.chats-clear-all:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--text-tertiary);
}

.chats-clear-all:active {
    transform: scale(0.96);
}

.chats-clear-all:focus-visible {
    outline: none;
    color: var(--text-primary);
    box-shadow: 0 0 0 2px var(--border-focus);
}

/* ── Bulk toolbar (glass) ─────────────────────────────────────── */
.chats-page__bulk-toolbar {
    /* Fixed in the chats-page header band (no scroll).
       Glass + heavy blur retained as a premium aesthetic. */
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 10px 8px 14px;
    margin: 0 0 12px;
    background: color-mix(in srgb, var(--bg-elevated) 65%, transparent);
    backdrop-filter: blur(24px) saturate(200%);
    -webkit-backdrop-filter: blur(24px) saturate(200%);
    border: 1px solid color-mix(in srgb, var(--text-primary) 10%, transparent);
    border-radius: 14px;
    box-shadow:
        0 16px 40px -12px rgba(0, 0, 0, 0.45),
        0 4px 12px -4px rgba(0, 0, 0, 0.25),
        inset 0 1px 0 0 color-mix(in srgb, var(--text-primary) 8%, transparent);
    animation: bulk-rise 0.24s cubic-bezier(0.2, 0, 0, 1);
}

/* Light theme — adjust glass tint so it reads on a light bg */
body.light-theme .chats-page__bulk-toolbar {
    background: color-mix(in srgb, var(--bg-elevated) 78%, transparent);
    border-color: color-mix(in srgb, #000000 12%, transparent);
    box-shadow:
        0 16px 40px -12px rgba(0, 0, 0, 0.18),
        0 4px 12px -4px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 0 rgba(255, 255, 255, 0.6);
}

@keyframes bulk-rise {
    from { opacity: 0; transform: translateY(-4px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Count display with subtle pulse dot ──────────────────────── */
.chats-bulk__count {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    margin-right: auto;
    padding-left: 4px;
    letter-spacing: -0.005em;
    font-variant-numeric: tabular-nums;
}

/* Desktop default: show the verbose count, hide the short version.
   Mobile rules in mobile.css flip this. */
.chats-bulk__count-full { display: inline; }
.chats-bulk__count-short { display: none; }

.chats-bulk__count-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 0 var(--accent-translucent);
    animation: bulk-dot-pulse 2.4s cubic-bezier(0.4, 0, 0.6, 1) infinite;
    flex-shrink: 0;
}

@keyframes bulk-dot-pulse {
    0%, 100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 30%, transparent); }
    50%      { box-shadow: 0 0 0 6px color-mix(in srgb, var(--accent) 0%, transparent); }
}

@media (prefers-reduced-motion: reduce) {
    .chats-bulk__count-dot { animation: none; }
}

/* ── Buttons (premium pill, icon + label) ──────────────────────── */
.chats-bulk__btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-primary);
    border-radius: 999px;
    padding: 6px 14px 6px 12px;
    font-size: 12.5px;
    font-weight: 500;
    cursor: pointer;
    font-family: inherit;
    line-height: 1.2;
    letter-spacing: -0.005em;
    white-space: nowrap;
    transition: background 0.18s ease, border-color 0.18s ease,
                color 0.18s ease, transform 0.1s ease,
                box-shadow 0.18s ease;
}

.chats-bulk__btn-icon {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
    transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1),
                color 0.18s ease;
}

.chats-bulk__btn:hover {
    background: var(--bg-hover);
    border-color: var(--text-tertiary);
}

.chats-bulk__btn:hover .chats-bulk__btn-icon {
    transform: scale(1.12);
}

.chats-bulk__btn:active {
    transform: scale(0.97);
}

.chats-bulk__btn:focus-visible {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-muted);
}

/* ── Star variant — gold accent on hover ───────────────────────── */
.chats-bulk__btn--star:hover {
    color: #fbbf24;
    border-color: rgba(251, 191, 36, 0.45);
    background: rgba(251, 191, 36, 0.08);
}

.chats-bulk__btn--star:hover .chats-bulk__btn-icon {
    fill: #fbbf24;
    color: #fbbf24;
    filter: drop-shadow(0 0 4px rgba(251, 191, 36, 0.4));
    transform: scale(1.15) rotate(-6deg);
}

body.light-theme .chats-bulk__btn--star:hover {
    color: #d97706;
    border-color: rgba(217, 119, 6, 0.4);
    background: rgba(217, 119, 6, 0.07);
}

body.light-theme .chats-bulk__btn--star:hover .chats-bulk__btn-icon {
    fill: #d97706;
    color: #d97706;
}

/* ── Danger variant — Delete ──────────────────────────────────── */
.chats-bulk__btn--danger {
    color: #f87171;
    border-color: rgba(248, 113, 113, 0.32);
}

.chats-bulk__btn--danger:hover {
    color: #fca5a5;
    background: rgba(248, 113, 113, 0.14);
    border-color: rgba(248, 113, 113, 0.55);
    box-shadow: inset 0 0 0 1px rgba(248, 113, 113, 0.25);
}

.chats-bulk__btn--danger:hover .chats-bulk__btn-icon {
    transform: scale(1.12) rotate(-4deg);
}

body.light-theme .chats-bulk__btn--danger {
    color: #dc2626;
    border-color: rgba(220, 38, 38, 0.32);
}

body.light-theme .chats-bulk__btn--danger:hover {
    color: #b91c1c;
    background: rgba(220, 38, 38, 0.09);
    border-color: rgba(220, 38, 38, 0.5);
    box-shadow: inset 0 0 0 1px rgba(220, 38, 38, 0.18);
}

/* ── Divider — soft gradient line ──────────────────────────────── */
.chats-bulk__divider {
    width: 1px;
    height: 22px;
    flex-shrink: 0;
    margin: 0 4px;
    background: linear-gradient(to bottom,
        transparent,
        var(--border-primary) 30%,
        var(--border-primary) 70%,
        transparent);
}

/* ── List ─────────────────────────────────────────────────────── */
.chats-page__list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
}

/* ── Date group headers ───────────────────────────────────────── */
.chats-group {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    padding: 24px 14px 8px;
    margin-top: 4px;
    user-select: none;
}

.chats-group:first-child {
    padding-top: 8px;
    margin-top: 0;
}

.chats-group__label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-tertiary);
}

.chats-group__count {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-tertiary);
    font-variant-numeric: tabular-nums;
    background: var(--bg-tertiary);
    padding: 2px 8px;
    border-radius: 999px;
    border: 1px solid var(--border-secondary);
}

/* ── Rows ─────────────────────────────────────────────────────── */
.chats-row {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 13px 14px;
    border-radius: 12px;
    cursor: pointer;
    position: relative;
    transition: background 0.15s ease, transform 0.08s ease;
    /* Stagger entrance */
    opacity: 0;
    transform: translateY(4px);
    animation: row-enter 0.4s cubic-bezier(0.2, 0, 0, 1) forwards;
    animation-delay: var(--stagger, 0ms);
}

@keyframes row-enter {
    to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
    .chats-row { animation: none; opacity: 1; transform: none; }
    .chats-page__bulk-toolbar { animation: none; }
}

.chats-row:hover {
    background: var(--bg-hover);
}

.chats-row:active {
    transform: scale(0.998);
}

.chats-row.is-selected {
    background: color-mix(in srgb, var(--accent) 10%, transparent);
}

.chats-row.is-selected::before {
    content: '';
    position: absolute;
    left: 0;
    top: 12%;
    bottom: 12%;
    width: 3px;
    border-radius: 0 3px 3px 0;
    background: var(--accent);
}

.chats-row:focus-visible {
    outline: none;
    box-shadow: inset 0 0 0 2px var(--border-focus);
}

/* Pinned (starred) rows get a subtle gold left rail when not selected */
.chats-row.is-pinned:not(.is-selected)::before {
    content: '';
    position: absolute;
    left: 0;
    top: 30%;
    bottom: 30%;
    width: 2px;
    border-radius: 0 2px 2px 0;
    background: linear-gradient(to bottom, transparent, #fbbf24, transparent);
    opacity: 0.6;
}

/* ── Custom checkbox ─────────────────────────────────────────── */
.chats-row__check-wrap {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    cursor: pointer;
    position: relative;
    transition: opacity 0.18s ease;
}

.chats-row__check {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    margin: 0;
    opacity: 0;
    cursor: pointer;
}

.chats-row__check-box {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border: 1.5px solid var(--text-secondary);  /* readable border */
    border-radius: 5px;
    background: transparent;
    color: transparent;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.1s ease;
}

.chats-row__check-wrap:hover .chats-row__check-box {
    border-color: var(--text-secondary);
}

.chats-row__check:checked + .chats-row__check-box {
    background: var(--accent);
    border-color: var(--accent);
    color: #ffffff;
    transform: scale(1.05);
}

.chats-row__check:focus-visible + .chats-row__check-box {
    box-shadow: 0 0 0 3px var(--accent-muted);
}

/* ── Star ─────────────────────────────────────────────────────── */
.chats-row__star {
    flex-shrink: 0;
    background: none;
    border: none;
    padding: 4px;
    cursor: pointer;
    color: var(--text-tertiary);
    line-height: 0;
    transition: color 0.18s ease, transform 0.15s cubic-bezier(0.34, 1.56, 0.64, 1), filter 0.18s ease;
    font-family: inherit;
    border-radius: 6px;
}

.chats-row__star:hover {
    color: #fbbf24;
    transform: scale(1.15) rotate(-6deg);
}

.chats-row__star:focus-visible {
    outline: none;
    color: var(--text-primary);
    box-shadow: 0 0 0 2px var(--border-focus);
}

.chats-row__star.is-starred {
    color: #fbbf24;
    filter: drop-shadow(0 0 6px rgba(251, 191, 36, 0.35));
}

/* ── Title ────────────────────────────────────────────────────── */
.chats-row__title {
    flex: 1;
    min-width: 0;
    font-size: 14.5px;
    font-weight: 500;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    line-height: 1.4;
    letter-spacing: -0.005em;
}

.chats-row__title.is-editing {
    background: var(--bg-input);
    border: 1px solid var(--border-focus);
    border-radius: 6px;
    padding: 4px 8px;
    outline: none;
    cursor: text;
    box-shadow: 0 0 0 3px var(--accent-muted);
    margin: -4px 0;
}

/* ── Meta cluster ────────────────────────────────────────────── */
.chats-row__meta {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    font-size: 12px;
    color: var(--text-tertiary);
}

.chats-row__model {
    font-size: 10.5px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 3px 8px;
    border: 1px solid var(--border-secondary);
    border-radius: 999px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    line-height: 1.2;
    max-width: 110px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chats-row__msgs {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-variant-numeric: tabular-nums;
}

.chats-row__msgs svg {
    color: var(--text-tertiary);
    opacity: 0.7;
}

.chats-row__indicators {
    display: inline-flex;
    gap: 8px;
    align-items: center;
}

.chats-row__indicator {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    line-height: 0;
    opacity: 0.75;
}

.chats-row:hover .chats-row__indicator {
    opacity: 1;
}

.chats-row__time {
    flex-shrink: 0;
    font-size: 12px;
    color: var(--text-tertiary);
    font-variant-numeric: tabular-nums;
    min-width: 44px;
    text-align: right;
}

/* ── Row actions (kebab) ─────────────────────────────────────── */
.chats-row__actions {
    flex-shrink: 0;
    transition: opacity 0.18s ease;
}

.chats-row__kebab {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    width: 28px;
    height: 28px;
    padding: 0;
    cursor: pointer;
    color: var(--text-secondary);  /* readable on first glance */
    border-radius: 8px;
    line-height: 0;
    font-family: inherit;
    transition: background 0.15s ease, color 0.15s ease, transform 0.08s ease;
}

.chats-row__kebab:hover {
    background: var(--bg-active);
    color: var(--text-primary);
}

.chats-row__kebab:active {
    transform: scale(0.92);
}

.chats-row__kebab:focus-visible {
    outline: none;
    color: var(--text-primary);
    box-shadow: 0 0 0 2px var(--border-focus);
}

/* ── Empty state ──────────────────────────────────────────────── */
.chats-page__empty {
    text-align: center;
    padding: 80px 16px 40px;
    color: var(--text-secondary);
}

.chats-page__empty p {
    margin: 0 0 22px;
    font-size: 15px;
    line-height: 1.5;
}

.chats-empty__clear {
    background: var(--accent);
    color: #ffffff;
    border: none;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    padding: 9px 20px;
    border-radius: 9px;
    font-family: inherit;
    letter-spacing: -0.005em;
    transition: background 0.15s ease, transform 0.08s ease, box-shadow 0.15s ease;
    box-shadow: 0 4px 12px -4px var(--accent-translucent);
}

.chats-empty__clear:hover {
    background: var(--accent-hover);
    box-shadow: 0 6px 18px -4px var(--accent-translucent);
}

.chats-empty__clear:active {
    transform: scale(0.97);
}

/* ── Error state ──────────────────────────────────────────────── */
.chats-page__error {
    text-align: center;
    padding: 80px 16px 40px;
    color: var(--text-secondary);
}

.chats-page__error p {
    margin: 0 0 22px;
    font-size: 15px;
    line-height: 1.5;
}

/* ── Skeleton (shimmer) ───────────────────────────────────────── */
.chats-row.is-skeleton {
    pointer-events: none;
    animation: none;
    opacity: 1;
    transform: none;
}

.chats-row.is-skeleton .chats-row__check-wrap,
.chats-row.is-skeleton .chats-row__star,
.chats-row.is-skeleton .chats-row__title,
.chats-row.is-skeleton .chats-row__time {
    background: linear-gradient(90deg,
        var(--bg-tertiary) 0%,
        color-mix(in srgb, var(--bg-tertiary) 40%, var(--bg-hover) 60%) 50%,
        var(--bg-tertiary) 100%);
    background-size: 200% 100%;
    animation: chats-shimmer 1.4s ease-in-out infinite;
    border-radius: 6px;
    color: transparent;
    border: none;
}

.chats-row.is-skeleton .chats-row__check-wrap,
.chats-row.is-skeleton .chats-row__star {
    width: 18px;
    height: 18px;
    opacity: 1;
}

.chats-row.is-skeleton .chats-row__title {
    height: 14px;
}

.chats-row.is-skeleton .chats-row__time {
    width: 36px;
    height: 12px;
}

@keyframes chats-shimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ── Kebab popover ────────────────────────────────────────────── */
.chats-row__menu {
    position: absolute;
    background: var(--bg-elevated);
    border: 1px solid var(--border-primary);
    border-radius: 12px;
    padding: 5px;
    box-shadow:
        0 16px 40px -12px rgba(0, 0, 0, 0.5),
        0 6px 16px -6px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 0 color-mix(in srgb, var(--text-primary) 6%, transparent);
    z-index: 100;
    min-width: 168px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transform-origin: top right;
    animation: menu-pop 0.18s cubic-bezier(0.2, 0, 0, 1);
}

@keyframes menu-pop {
    from { opacity: 0; transform: scale(0.94) translateY(-4px); }
    to   { opacity: 1; transform: scale(1) translateY(0); }
}

.chats-row__menu-item {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    background: none;
    border: none;
    padding: 8px 12px;
    text-align: left;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    font-family: inherit;
    border-radius: 8px;
    transition: background 0.12s ease;
    letter-spacing: -0.005em;
}

.chats-row__menu-item:hover {
    background: var(--bg-hover);
}

.chats-row__menu-item--danger {
    color: #f87171;
}

.chats-row__menu-item--danger:hover {
    background: rgba(248, 113, 113, 0.1);
}

body.light-theme .chats-row__menu-item--danger {
    color: #dc2626;
}

body.light-theme .chats-row__menu-item--danger:hover {
    background: rgba(220, 38, 38, 0.08);
}

/* ── Mobile (≤768px) ──────────────────────────────────────────── */
