:root {
    --bg-app: #f4f5f7;
    --bg-sidebar: #f8f9fb;
    --bg-surface: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --text-light: #94a3b8;
    --border-color: #e2e8f0;
    --brand-blue: #274a8d;
    --brand-blue-hover: #274a8d;
    --brand-blue-light: #e6f0fd;
    --success-green: #22c55e;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-app);
    color: var(--text-main);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

button,
input {
    font-family: inherit;
}

a {
    color: var(--brand-blue);
    text-decoration: none;
}

    a:hover {
        text-decoration: underline;
    }

/* Layout */
.app-shell {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    flex-shrink: 0;
}

.sidebar-top {
    padding: 24px 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-logo {
    width: 32px;
    height: 32px;
    background-color: var(--brand-blue);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.brand h1 {
    font-size: 18px;
    font-weight: 700;
    color: var(--brand-blue);
}

.brand-desc {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.4;
}

.sidebar-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 8px 0;
}

.quick-panel {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.panel-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.questions-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sample-question {
    text-align: left;
    background: none;
    border: 1px solid transparent;
    padding: 10px 12px;
    border-radius: 6px;
    font-size: 13px;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
}

    .sample-question:hover {
        background-color: rgba(0, 0, 0, 0.03);
    }

    .sample-question.active {
        background-color: var(--brand-blue-light);
        color: var(--brand-blue);
        border-color: rgba(29, 116, 245, 0.2);
        font-weight: 500;
    }

.sidebar-bottom {
    padding: 16px 20px 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sidebar-action {
    display: flex;
    align-items: center;
    gap: 10px;
    background: none;
    border: none;
    padding: 10px 12px;
    border-radius: 6px;
    font-size: 14px;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s;
    text-align: left;
}

    .sidebar-action:hover {
        background-color: rgba(0, 0, 0, 0.03);
        color: var(--text-main);
    }

.made-with {
    font-size: 12px;
    color: var(--text-light);
    margin-top: 16px;
    padding-left: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.visily-logo {
    font-weight: 600;
    color: #1e293b;
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Main Area */
.main-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    /* Important for flex children to not overflow */
}

/* Header */
.main-header {
    height: 64px;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    flex-shrink: 0;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.mobile-menu-btn {
    display: none;
}

.header-titles h2 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 2px;
}

.header-titles p {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.status-pill {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background-color: #f0fdf4;
    color: var(--brand-blue);
    border: 1px solid #dcfce7;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
}

    .status-pill svg {
        color: var(--success-green);
    }

    .status-pill.error {
        background-color: #fef2f2;
        color: #ef4444;
        border-color: #fee2e2;
    }

        .status-pill.error svg {
            color: #ef4444;
        }

.header-divider {
    width: 1px;
    height: 24px;
    background-color: var(--border-color);
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    padding: 6px;
    transition: all 0.2s;
}

    .icon-btn:hover {
        background-color: var(--bg-app);
        color: var(--text-main);
    }

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-left: 8px;
}

.user-info {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.user-name {
    font-size: 14px;
    font-weight: 600;
}

.user-role {
    font-size: 12px;
    color: var(--text-muted);
}

.user-avatar-wrap {
    position: relative;
    width: 36px;
    height: 36px;
}

.user-avatar {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.user-avatar-small {
    width: 20px;
    height: 20px;
    border-radius: 50%;
}

.online-status {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 10px;
    height: 10px;
    background-color: var(--success-green);
    border: 2px solid var(--bg-surface);
    border-radius: 50%;
}

/* Chat Area */
.chat-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 24px;
    overflow: hidden;
}

.messages {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
    padding-bottom: 24px;
    padding-right: 12px;
}

    /* Custom Scrollbar for messages */
    .messages::-webkit-scrollbar {
        width: 6px;
    }

    .messages::-webkit-scrollbar-track {
        background: transparent;
    }

    .messages::-webkit-scrollbar-thumb {
        background: #cbd5e1;
        border-radius: 10px;
    }

        .messages::-webkit-scrollbar-thumb:hover {
            background: #94a3b8;
        }

.message {
    display: flex;
    flex-direction: column;
    max-width: 850px;
    margin: 0 auto;
    width: 100%;
    gap: 8px;
}

.message-meta {
    display: flex;
    align-items: center;
    gap: 8px;
}

.message.bot .message-meta {
    justify-content: flex-start;
    margin-left: 12px;
}

.message.user .message-meta {
    justify-content: flex-end;
    margin-right: 12px;
}

.avatar {
    width: 28px;
    height: 28px;
    background-color: var(--brand-blue);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
}

.sender-name {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-main);
}

.time {
    font-size: 11px;
    color: var(--text-light);
}

.bubble {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    font-size: 14px;
    line-height: 1.5;
    box-shadow: var(--shadow-sm);
}

.message.user .bubble {
    background-color: var(--brand-blue);
    color: white;
    border-color: var(--brand-blue);
    border-radius: 12px 12px 0 12px;
    align-self: flex-end;
}

.message.bot .bubble {
    border-radius: 12px 12px 12px 0;
    align-self: flex-start;
}

/* Table styling inside bubble */
.bubble.table-bubble {
    padding: 0;
    overflow: hidden;
    max-width: 100%;
}

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.table-title h3 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 4px;
}

.table-title p {
    font-size: 12px;
    color: var(--text-muted);
}

.table-actions {
    display: flex;
    gap: 8px;
}

.action-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 6px 12px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-main);
    cursor: pointer;
    transition: all 0.2s;
}

    .action-btn:hover {
        background-color: var(--bg-app);
    }

.data-table-wrap {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

    .data-table th,
    .data-table td {
        padding: 12px 20px;
        text-align: left;
        border-bottom: 1px solid var(--border-color);
        white-space: nowrap;
    }

    .data-table th {
        background-color: var(--bg-surface);
        color: var(--text-muted);
        font-weight: 600;
    }

.text-right {
    text-align: right !important;
}

.table-footer {
    padding: 12px 20px;
    text-align: center;
    font-size: 12px;
    color: var(--text-muted);
    background-color: var(--bg-surface);
    border-top: 1px dashed var(--border-color);
}

.date-separator {
    text-align: center;
    margin: 16px 0;
    position: relative;
}

    .date-separator::before {
        content: "";
        position: absolute;
        top: 50%;
        left: 0;
        right: 0;
        height: 1px;
        background-color: var(--border-color);
        z-index: 1;
    }

    .date-separator span {
        background-color: var(--bg-app);
        padding: 0 12px;
        font-size: 11px;
        color: var(--text-light);
        font-weight: 600;
        letter-spacing: 0.5px;
        position: relative;
        z-index: 2;
    }

/* Composer */
.composer-container {
    max-width: 850px;
    margin: 0 auto;
    width: 100%;
    padding-top: 16px;
}

.composer {
    display: flex;
    align-items: center;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 8px 8px 8px 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

    .composer input {
        flex: 1;
        border: none;
        outline: none;
        font-size: 15px;
        color: var(--text-main);
        background: transparent;
    }

        .composer input::placeholder {
            color: var(--text-light);
        }

.composer-actions {
    display: flex;
    align-items: center;
    gap: 4px;
}

.vertical-divider {
    width: 1px;
    height: 20px;
    background-color: var(--border-color);
    margin: 0 4px;
}

.text-muted {
    color: var(--text-muted);
}

.send-btn {
    background-color: var(--bg-sidebar);
    color: var(--text-main);
    padding: 8px;
}

    .send-btn:hover {
        background-color: var(--border-color);
    }

.composer-hint {
    text-align: center;
    font-size: 11px;
    color: var(--text-light);
    margin-top: 12px;
}

    .composer-hint .dot {
        margin: 0 6px;
    }

/* Responsiveness */
@media (max-width: 900px) {
    .sidebar {
        position: absolute;
        transform: translateX(-100%);
        z-index: 10;
        height: 100%;
        transition: transform 0.3s;
    }

        .sidebar.open {
            transform: translateX(0);
            box-shadow: var(--shadow-lg);
        }

    .mobile-menu-btn {
        display: flex;
    }

    .header-titles p {
        display: none;
    }

    .user-info {
        display: none;
    }
}
/* ── Autocomplete Dropdown ───────────────────────────────────────── */
.composer-container {
    position: relative;
}

.ac-dropdown {
    display: none;
    position: absolute;
    bottom: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 -4px 20px rgba(0,0,0,0.10);
    list-style: none;
    margin: 0;
    padding: 4px 0;
    z-index: 300;
    max-height: 260px;
    overflow-y: auto;
}

.ac-item {
    padding: 10px 18px;
    font-size: 13.5px;
    color: var(--text-main);
    cursor: pointer;
    transition: background 0.1s;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

    .ac-item mark {
        background: none;
        color: var(--brand-blue);
        font-weight: 600;
    }

    .ac-item:hover,
    .ac-item-active {
        background: var(--brand-blue-light);
        color: var(--brand-blue);
    }

/* Green flash on spell correction */
@keyframes correctedFlash {
    0% {
        background-color: #d1fae5;
        border-radius: 6px;
    }

    100% {
        background-color: transparent;
    }
}

[data-theme="dark"] .corrected-flash {
    animation: correctedFlashDark 0.8s ease;
}

@keyframes correctedFlashDark {
    0% {
        background-color: #14532d;
        border-radius: 6px;
    }
    100% {
        background-color: transparent;
    }
}

.corrected-flash {
    animation: correctedFlash 0.8s ease;
}

/* ── Filter Panel ────────────────────────────────────────────────── */
.filter-panel {
    background: var(--bg-app);
    border-bottom: 1px solid var(--border-color);
    padding: 14px 20px;
    animation: filterSlideDown 0.18s ease;
}

@keyframes filterSlideDown {
    from {
        opacity: 0;
        transform: translateY(-6px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.filter-fields {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    align-items: flex-end;
}

.filter-field {
    display: flex;
    flex-direction: column;
    gap: 5px;
    min-width: 180px;
    flex: 1;
}

.filter-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.filter-input {
    padding: 7px 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 13px;
    font-family: inherit;
    color: var(--text-main);
    background: var(--bg-surface);
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}

    .filter-input:focus {
        border-color: var(--brand-blue);
        box-shadow: 0 0 0 3px var(--brand-blue-light);
    }

    .filter-input::placeholder {
        color: var(--text-light);
    }

.filter-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
}

.filter-result-count {
    font-size: 12px;
    color: var(--text-muted);
}

.filter-clear-btn {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    padding: 4px 10px;
    font-size: 12px;
    font-family: inherit;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.15s;
}

    .filter-clear-btn:hover {
        border-color: var(--brand-blue);
        color: var(--brand-blue);
        background: var(--brand-blue-light);
    }

.action-btn-active {
    background-color: var(--brand-blue-light) !important;
    border-color: var(--brand-blue) !important;
    color: var(--brand-blue) !important;
}

/* ── Fallback suggestion chips ───────────────────────────────────── */
.fallback-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    margin-top: 12px;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.fallback-chips {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.fallback-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: var(--bg-app);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 13px;
    font-family: inherit;
    color: var(--text-main);
    cursor: pointer;
    text-align: left;
    transition: all 0.15s ease;
    width: fit-content;
}

    .fallback-chip::before {
        content: "→";
        color: var(--brand-blue);
        font-size: 13px;
        flex-shrink: 0;
    }

    .fallback-chip:hover {
        background: var(--brand-blue-light);
        border-color: var(--brand-blue);
        color: var(--brand-blue);
    }

    .fallback-chip:active {
        transform: scale(0.98);
    }

/* ── Single Record Info Card ─────────────────────────────────────── */
.single-record-bubble {
    background: linear-gradient(135deg, var(--brand-blue-light) 0%, var(--bg-surface) 100%);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 18px 20px;
    width: 650px;
    max-width: 100%;
}

.sr-answer-row {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 14px;
}

.sr-icon {
    font-size: 16px;
    color: var(--brand-blue);
    flex-shrink: 0;
    margin-top: 1px;
}

.sr-answer-text {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-main);
    line-height: 1.55;
    margin: 0;
}

.sr-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    width: 100%;
}

.sr-cell-wide {
    grid-column: span 2;
}

@media (max-width: 600px) {
    .sr-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.sr-cell {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px 12px;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.sr-label {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.sr-value {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-main);
    word-break: break-word;
}

/* ── Single-field Answer Card (amount / vendor / delivery date) ───── */
.answer-card {
    background: linear-gradient(135deg, var(--brand-blue-light) 0%, var(--bg-surface) 100%);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 12px 16px;
    max-width: 360px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.ac-header {
    display: flex;
    align-items: center;
    gap: 8px;
}

.ac-icon {
    width: 22px;
    height: 22px;
    background-color: var(--brand-blue);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.ac-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.ac-value {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-main);
    letter-spacing: -0.1px;
    padding-left: 30px;
}

/* ── Follow-up chips (after a real answer) — no arrow, more subtle ── */
.followup-chips {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px dashed var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.followup-chips .fallback-chip::before {
    content: "›";
    color: var(--text-muted);
}

/* ── COLLAPSIBLE LEFT SIDEBAR & QUESTION HISTORY & RIGHT SIDEBAR ── */
.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.new-chat-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-main);
    cursor: pointer;
    margin-top: 8px;
    transition: all 0.2s;
}

.new-chat-btn:hover {
    background-color: var(--brand-blue-light);
    border-color: var(--brand-blue);
    color: var(--brand-blue);
}

.history-panel {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 16px;
    flex: 1;
    overflow: hidden;
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
    overflow-y: auto;
    max-height: calc(100vh - 280px);
    padding-right: 4px;
}

.history-item {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    background: none;
    border: none;
    padding: 8px 10px;
    border-radius: 6px;
    font-size: 13px;
    color: var(--text-muted);
    cursor: pointer;
    text-align: left;
    transition: all 0.2s;
}

.history-item span {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
}

.history-item:hover {
    background-color: rgba(0, 0, 0, 0.03);
    color: var(--text-main);
}

.history-item svg {
    color: var(--text-light);
    flex-shrink: 0;
}

.history-item:hover svg {
    color: var(--brand-blue);
}

.sidebar.left-sidebar {
    transition: width 0.25s cubic-bezier(0.4, 0, 0.2, 1), padding 0.25s, border 0.25s;
}

.sidebar.left-sidebar.collapsed {
    width: 0;
    padding: 0;
    border-right: none;
    overflow: hidden;
}

.right-sidebar {
    width: 280px;
    background-color: var(--bg-sidebar);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 24px 20px;
    flex-shrink: 0;
    overflow-y: auto;
}

.expand-sidebar-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    cursor: pointer;
    border-radius: 6px;
    padding: 6px;
    transition: all 0.2s;
}

.expand-sidebar-btn:hover {
    background-color: var(--bg-app);
    color: var(--text-main);
}

@media (max-width: 1200px) {
    .right-sidebar {
        display: none;
    }
}

/* ── History item: hover delete button ───────────────────────────── */
.history-item {
    position: relative;
}

.history-delete-btn {
    display: none;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: none;
    border: none;
    padding: 3px;
    border-radius: 4px;
    cursor: pointer;
    color: var(--text-light);
    transition: background 0.15s, color 0.15s;
    margin-left: auto;
}

.history-delete-btn:hover {
    background-color: rgba(239, 68, 68, 0.12);
    color: #ef4444;
}

.history-item:hover .history-delete-btn {
    display: flex;
}

/* ── Theme toggle button ─────────────────────────────────────────── */
.theme-toggle-btn {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    transition: background 0.2s, color 0.2s;
}

.theme-toggle-btn .sun-icon { display: none; }
.theme-toggle-btn .moon-icon { display: block; }

[data-theme="dark"] .theme-toggle-btn .sun-icon { display: block; }
[data-theme="dark"] .theme-toggle-btn .moon-icon { display: none; }

/* ── Sample question collapse ────────────────────────────────────── */
.sq-category {
    display: flex;
    flex-direction: column;
    margin-bottom: 4px;
}

.sq-category-header {
    display: flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: none;
    padding: 6px 8px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    text-align: left;
    width: 100%;
    margin-top: 4px;
}

.sq-category-header:hover {
    background-color: rgba(0,0,0,0.04);
    color: var(--text-main);
}

.sq-chevron {
    flex-shrink: 0;
    transition: transform 0.2s ease;
}

.sq-category-header[aria-expanded="false"] .sq-chevron {
    transform: rotate(-90deg);
}

.sq-category-body {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding-left: 8px;
    overflow: hidden;
    max-height: 600px;
    transition: max-height 0.25s ease, opacity 0.2s ease;
    opacity: 1;
}

.sq-category-body.collapsed {
    max-height: 0;
    opacity: 0;
}

.panel-title-row {
    display: flex !important;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    margin-bottom: 4px;
}

.panel-title-inner {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.collapse-right-btn {
    opacity: 0.6;
    transition: opacity 0.2s, background 0.2s;
    flex-shrink: 0;
}

.collapse-right-btn:hover {
    opacity: 1;
    background-color: rgba(0,0,0,0.06);
}

[data-theme="dark"] .collapse-right-btn:hover {
    background-color: rgba(255,255,255,0.08);
}

/* Right sidebar collapsed state */
.right-sidebar {
    transition: width 0.25s cubic-bezier(0.4, 0, 0.2, 1),
                padding 0.25s cubic-bezier(0.4, 0, 0.2, 1),
                border 0.25s,
                opacity 0.2s;
}

.right-sidebar.collapsed {
    width: 0;
    padding: 0;
    border-left: none;
    overflow: hidden;
    opacity: 0;
}

/* Reopen tab — floats at top-right edge of main area */
.right-sidebar-tab {
    position: absolute;
    top: 72px;
    right: 0;
    display: none;
    align-items: center;
    gap: 6px;
    background: var(--bg-sidebar);
    border: 1px solid var(--border-color);
    border-right: none;
    border-radius: 8px 0 0 8px;
    padding: 8px 10px 8px 12px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    z-index: 50;
    transition: background 0.2s, color 0.2s;
    writing-mode: horizontal-tb;
    box-shadow: -2px 2px 8px rgba(0,0,0,0.08);
}

.right-sidebar-tab:hover {
    background: var(--brand-blue-light);
    color: var(--brand-blue);
    border-color: var(--brand-blue);
}

[data-theme="dark"] .right-sidebar-tab {
    box-shadow: -2px 2px 8px rgba(0,0,0,0.3);
}

/* Make app-shell relative so the tab can position itself */
.app-shell {
    position: relative;
}
[data-theme="dark"] {
    --bg-app: #0f1117;
    --bg-sidebar: #161b27;
    --bg-surface: #1e2535;
    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
    --text-light: #8899b0;
    --border-color: #2d3748;
    --brand-blue: #3b9dd2;
    --brand-blue-hover: #5bb3e4;
    --brand-blue-light: #1a3a52;
    --success-green: #22c55e;
    --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.4), 0 2px 4px -1px rgba(0,0,0,0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.5), 0 4px 6px -2px rgba(0,0,0,0.3);
}

[data-theme="dark"] body {
    background-color: var(--bg-app);
    color: var(--text-main);
}

[data-theme="dark"] .main-header {
    background-color: var(--bg-surface);
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .sidebar,
[data-theme="dark"] .right-sidebar {
    background-color: var(--bg-sidebar);
    border-color: var(--border-color);
}

[data-theme="dark"] .message.bot .bubble {
    background-color: var(--bg-surface);
    border-color: var(--border-color);
    color: var(--text-main);
}

[data-theme="dark"] .message.user .bubble {
    background-color: var(--brand-blue);
}

[data-theme="dark"] .composer {
    background-color: var(--bg-surface);
    border-color: var(--border-color);
}

[data-theme="dark"] #questionInput {
    background-color: transparent;
    color: var(--text-main);
}

[data-theme="dark"] #questionInput::placeholder {
    color: var(--text-light);
}

[data-theme="dark"] .icon-btn:hover {
    background-color: rgba(255,255,255,0.07);
}

[data-theme="dark"] .history-item:hover {
    background-color: rgba(255,255,255,0.05);
}

[data-theme="dark"] .sample-question:hover {
    background-color: rgba(255,255,255,0.05);
}

[data-theme="dark"] .sample-question.active {
    background-color: var(--brand-blue-light);
    color: var(--brand-blue);
}

[data-theme="dark"] .new-chat-btn {
    background-color: var(--brand-blue);
    color: #fff;
}

[data-theme="dark"] .new-chat-btn:hover {
    background-color: var(--brand-blue-hover);
}

[data-theme="dark"] .sq-category-header:hover {
    background-color: rgba(255,255,255,0.05);
}

[data-theme="dark"] .ac-dropdown {
    background-color: var(--bg-surface);
    border-color: var(--border-color);
}

[data-theme="dark"] .ac-item:hover,
[data-theme="dark"] .ac-item.active {
    background-color: rgba(255,255,255,0.07);
}

[data-theme="dark"] .chat-area {
    background-color: var(--bg-app);
}

[data-theme="dark"] table {
    border-color: var(--border-color);
}

[data-theme="dark"] th {
    background-color: #252d3d;
    border-color: var(--border-color);
    color: #a8b8cc;
}

[data-theme="dark"] td {
    border-color: var(--border-color);
    color: var(--text-main);
}

[data-theme="dark"] tr:hover td {
    background-color: rgba(255,255,255,0.05);
}

[data-theme="dark"] .table-header {
    background-color: var(--bg-surface);
}

[data-theme="dark"] .table-header h3 {
    color: var(--text-main);
}

[data-theme="dark"] .action-btn {
    background-color: var(--bg-surface);
    border-color: var(--border-color);
    color: var(--text-main);
}

[data-theme="dark"] .action-btn:hover {
    background-color: rgba(255,255,255,0.07);
}

[data-theme="dark"] .filter-panel {
    background: var(--bg-sidebar);
}

[data-theme="dark"] .filter-input {
    background: var(--bg-app);
    color: var(--text-main);
    border-color: var(--border-color);
}

[data-theme="dark"] .filter-clear-btn {
    background: var(--bg-surface);
    color: var(--text-muted);
    border-color: var(--border-color);
}

[data-theme="dark"] .fallback-chip {
    background: var(--bg-surface);
    border-color: var(--border-color);
    color: var(--text-main);
}

[data-theme="dark"] .fallback-chip:hover {
    background: var(--brand-blue-light);
    border-color: var(--brand-blue);
    color: var(--brand-blue);
}

[data-theme="dark"] .panel-title {
    color: #7a8fa8;
}

[data-theme="dark"] .sq-category-header {
    color: #8899b0;
}

[data-theme="dark"] .sample-question {
    color: #b0c0d4;
}

[data-theme="dark"] .sender-name {
    color: var(--text-main);
}

[data-theme="dark"] .visily-logo {
    color: var(--text-main);
}

[data-theme="dark"] .composer-hint {
    color: #7a8fa8;
}

[data-theme="dark"] .date-separator span {
    background-color: var(--bg-app);
    color: #7a8fa8;
}

[data-theme="dark"] .status-pill {
    background-color: #1a2e1a;
    color: #4ade80;
    border-color: #166534;
}