/* Chat Interface Styles */

/* Loading Indicator - Inline below assistant messages */
.loading-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px 0;
    margin-top: 8px;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.loading-indicator.complete {
    opacity: 0.6;
}

.loading-indicator img {
    width: 32px;
    height: 32px;
    opacity: 1;
    transition: opacity 0.3s ease;
    animation-play-state: running !important;
    will-change: auto;
}

.loading-indicator.complete img {
    opacity: 0.4;
}

.loading-indicator .spinner {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: radial-gradient(circle, #FFD700 0%, #4285f4 50%, #8B5CF6 100%);
    animation: burst 1.2s ease-in-out infinite;
}

.loading-indicator.complete .spinner {
    animation: none;
    opacity: 0.4;
}

@keyframes burst {
    0% {
        transform: scale(0.5);
        opacity: 0.3;
        box-shadow: 0 0 0 0 rgba(255, 215, 0, 0.7);
    }
    50% {
        transform: scale(1);
        opacity: 1;
        box-shadow: 0 0 15px 5px rgba(66, 133, 244, 0.5);
    }
    100% {
        transform: scale(0.5);
        opacity: 0.3;
        box-shadow: 0 0 0 0 rgba(139, 92, 246, 0.7);
    }
}

/* Sidebar Styles */
.sidebar {
    width: 280px;
    min-width: 280px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
    transition: width var(--transition-normal), min-width var(--transition-normal),
                border-right-color var(--transition-normal);
}

.sidebar.collapsed {
    width: 0;
    min-width: 0;
    border-right-color: transparent;
}

.sidebar.collapsed > * {
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
}

.sidebar-toggle-btn {
    flex-shrink: 0;
}

.sidebar-header {
    padding: var(--spacing-md) var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h2 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.btn-new-chat {
    width: 100%;
    background-color: var(--primary-color);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    font-weight: 500;
}

.btn-new-chat:hover:not(:disabled) {
    background-color: var(--primary-hover);
}

.sidebar-search {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.sidebar-search input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    background-color: var(--background-color);
    transition: all var(--transition-fast);
}

.sidebar-search input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.sidebar-nav {
    flex: 1 1 0;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-history-list,
.chats-list {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-sm);
}

.chat-history-item {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color var(--transition-fast);
    border: 1px solid transparent;
    position: relative;
}

.chat-history-item:hover {
    background-color: var(--background-color);
    border-color: var(--border-color);
}

.chat-history-item:hover .chat-history-item-delete {
    opacity: 1;
}

.chat-history-item.active {
    background-color: var(--primary-light);
    border-color: var(--primary-color);
}

.chat-history-item-title {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    outline: none;
    padding: 2px 4px;
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.chat-history-item-title:focus {
    background-color: var(--background-color);
    box-shadow: 0 0 0 2px var(--primary-color);
    white-space: normal;
    text-overflow: clip;
}

.chat-history-item-title:hover {
    background-color: rgba(0, 0, 0, 0.02);
}

.chat-history-item-preview {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chat-history-item-date {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    margin-top: var(--spacing-xs);
}

.chat-history-item-delete {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 28px;
    height: 28px;
    border-radius: var(--radius-md);
    background-color: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all var(--transition-fast);
}

.chat-history-item-delete:hover {
    background-color: #fee;
    color: #c00;
}

.chat-history-item-delete:active {
    transform: scale(0.95);
}

.chat-history-item.active .chat-history-item-delete {
    opacity: 0.6;
}

.chat-history-item.active .chat-history-item-delete:hover {
    opacity: 1;
}

/* Actions Section */
.sidebar-section {
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-md);
}

.sidebar-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: rgba(0, 0, 0, 0.02);
}

.sidebar-section-header h3 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin: 0;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.actions-section {
    flex: 0 1 auto;
    max-height: 300px;
    min-height: 44px;
    overflow-y: auto;
    margin-bottom: 0;
}

.chats-section {
    flex: 0 1 auto;
    max-height: 40vh;
    overflow-y: auto;
    min-height: 44px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 0;
    display: flex;
    flex-direction: column;
}

.chats-section .chats-list {
    flex: 1 1 auto;
    overflow-y: auto;
    min-height: 0;
}

.actions-list {
    padding: var(--spacing-sm);
}

.action-item {
    background-color: var(--message-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    cursor: pointer;
    transition: all 0.2s ease;
}

.action-item:hover {
    background-color: var(--hover-bg);
    border-color: var(--primary-color);
}

.action-item-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
}

.action-item-prompt {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
    flex: 1;
    line-height: 1.4;
    word-break: break-word;
}

.action-item-schedule {
    font-size: 11px;
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: var(--spacing-xs);
}

.action-item-delete {
    background: transparent;
    border: none;
    padding: 4px;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.action-item-delete:hover {
    color: var(--error-color);
    background-color: rgba(239, 68, 68, 0.1);
}

.action-item-edit {
    background: transparent;
    border: none;
    padding: 4px;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.action-item-edit:hover {
    color: var(--primary-color);
    background-color: rgba(var(--primary-color-rgb, 99, 102, 241), 0.1);
}

/* Action overlay day picker */
.action-prompt-textarea {
    resize: none;
    min-height: 80px;
    max-height: 15vh;
    overflow-y: auto;
}

.action-day-picker {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.action-day-option {
    display: flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    user-select: none;
}

.action-day-option input[type="checkbox"] {
    display: none;
}

.action-day-option span {
    display: inline-block;
    padding: 4px 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--input-bg, var(--background-color));
    transition: all 0.15s;
    cursor: pointer;
}

.action-day-option input[type="checkbox"]:checked + span {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}

.action-day-shortcuts {
    display: flex;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-xs);
}

.btn-day-shortcut {
    padding: 3px 10px;
    font-size: var(--font-size-xs, 11px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s;
}

.btn-day-shortcut:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.action-time-input {
    max-width: 160px;
}

.action-item-responses {
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-color);
}

.action-response {
    font-size: 12px;
    padding: var(--spacing-xs);
    background-color: var(--surface-color);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-xs);
}

.action-response-timestamp {
    flex: 1;
    background: transparent;
    border: none;
    padding: 0;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-align: left;
    cursor: pointer;
    transition: color 0.2s ease;
    white-space: nowrap;
}

.action-response-timestamp:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.action-response-delete {
    background: transparent;
    border: none;
    padding: 2px;
    color: var(--text-tertiary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.action-response-delete:hover {
    color: var(--error-color);
}

.empty-actions {
    padding: var(--spacing-md);
    text-align: center;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* Response Modal */
.response-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10000;
}

.response-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
}

.response-modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--background-color);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    max-width: 660px;
    width: 99%;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.response-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.response-modal-header h3 {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.response-modal-close {
    background: transparent;
    border: none;
    font-size: 32px;
    line-height: 1;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.response-modal-close:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

.response-modal-body {
    padding: var(--spacing-md);
    overflow-y: auto;
    overflow-x: hidden;
    flex: 1;
    min-height: 0;    /* required for flex children to actually scroll */
    scrollbar-gutter: stable;
}

.response-modal-time {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-sm);
}

.response-modal-text {
    color: var(--text-primary);
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-word;
}

.response-modal-html {
    white-space: normal;
    padding: 0;
}

.response-modal-iframe {
    display: block;
    width: 100%;
    min-height: 320px;
    height: 320px;  /* overridden by load handler */
    max-height: 65vh; /* taller now the modal is taller */
    border: none;
    border-radius: var(--radius-sm);
    overflow: auto;
    background: #fff;
}

.response-modal-html h1, .response-modal-html h2, .response-modal-html h3,
.response-modal-html h4, .response-modal-html h5, .response-modal-html h6 {
    margin: 0.75em 0 0.4em;
    font-weight: 600;
    line-height: 1.3;
}

.response-modal-html p {
    margin: 0 0 0.75em;
}

.response-modal-html ul, .response-modal-html ol {
    margin: 0 0 0.75em 1.4em;
    padding: 0;
}

.response-modal-html li {
    margin-bottom: 0.25em;
}

.response-modal-html table {
    border-collapse: collapse;
    width: 100%;
    margin-bottom: 0.75em;
    font-size: var(--font-size-sm);
}

.response-modal-html th, .response-modal-html td {
    border: 1px solid var(--border-color);
    padding: 6px 10px;
    text-align: left;
}

.response-modal-html th {
    background: var(--surface-color);
    font-weight: 600;
}

.response-modal-html pre, .response-modal-html code {
    background: var(--surface-color);
    border-radius: var(--radius-sm);
    font-family: monospace;
    font-size: 0.9em;
}

.response-modal-html pre {
    padding: 0.75em 1em;
    overflow-x: auto;
    margin-bottom: 0.75em;
}

.response-modal-html code {
    padding: 1px 4px;
}

.response-modal-html blockquote {
    border-left: 3px solid var(--primary-color);
    margin: 0 0 0.75em;
    padding: 0.25em 0.75em;
    color: var(--text-secondary);
}

/* UTC time conversion indicator */
.utc-converted {
    border-bottom: 1px dashed var(--text-secondary);
    cursor: help;
}

/* ── Idle overlay ────────────────────────────────────────────────────── */
.idle-overlay {
    position: fixed;
    inset: 0;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;         /* backdrop is transparent — clicks fall through */
    animation: idle-fade-in 0.6s ease;
}

.idle-overlay.hidden {
    display: none;
}

@keyframes idle-fade-in {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0);    }
}

.idle-overlay-box {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl, 28px);
    padding: 28px 36px;
    /* ~30% of viewport */
    width: clamp(320px, 30vw, 560px);
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
    pointer-events: auto;         /* clicks on the card itself are received */
    cursor: pointer;              /* clicking the card dismisses it */
    transition: box-shadow 0.2s;
}

.idle-overlay-box:hover {
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.32);
}

.idle-bot-image {
    width: clamp(64px, 8vw, 100px);
    height: auto;
    flex-shrink: 0;
    border-radius: var(--radius-md);
    object-fit: contain;
}

.idle-overlay-text {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.idle-greeting {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
}

.idle-message {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.5;
}

.sidebar-footer {
    padding: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.user-info {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    min-width: 0;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: var(--font-size-sm);
    flex-shrink: 0;
}

.user-details {
    display: flex;
    flex-direction: column;
    min-width: 0;
    flex: 1;
}

.user-name {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-email {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.btn-logout {
    padding: var(--spacing-sm);
    color: var(--text-secondary);
}

/* Main Content Area */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
    background-color: var(--background-color);
}

.chat-header {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--background-color);
    z-index: var(--z-header);
}

.chat-header h1 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.chat-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* Chat Messages */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-lg);
    scroll-behavior: smooth;
}

.welcome-screen {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.welcome-screen::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url('../assets/logoanimated.svg');
    background-repeat: no-repeat;
    background-position: center center;
    background-size: 45%;
    opacity: 0.07;
    pointer-events: none;
}

.welcome-content {
    position: relative;
    z-index: 1;
}

.welcome-content h2 {
    font-size: var(--font-size-xxl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.welcome-content p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.suggestion-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
    max-width: 600px;
    margin: 0 auto;
}

.chip {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-family);
}

.chip:hover {
    background-color: var(--primary-light);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Message Bubbles - Messaging App Style */
.message {
    position: relative;
    margin-bottom: var(--spacing-lg);
    animation: messageSlideIn var(--transition-normal);
    display: flex;
    flex-direction: column;
}

@keyframes messageSlideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hide headers - no labels */
.message-header {
    display: none;
}

.message-avatar {
    display: none;
}

.message-sender {
    display: none;
}

.message-timestamp {
    display: none;
}

/* User messages - right aligned with subtle background */
.message.user {
    align-items: flex-end;
}

.message.user .message-content {
    max-width: 75%;
    background-color: rgba(96, 165, 250, 0.12);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-md);
    line-height: 1.7;
    color: var(--text-primary);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

/* Assistant messages - left aligned, no background */
.message.assistant {
    align-items: flex-start;
}

.message.assistant .message-content {
    max-width: 85%;
    font-size: var(--font-size-md);
    line-height: 1.7;
    color: var(--text-primary);
    padding: var(--spacing-sm) 0;
}

/* Transient agentic-workflow progress line ("Working out the best way to
   approach this…", "Step 2 of 3…") shown while there's no real content yet.
   Removed automatically once thinking or answer content starts arriving. */
.agentic-status {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-style: italic;
    padding: 2px 0;
    animation: agentic-status-pulse 1.6s ease-in-out infinite;
}

@keyframes agentic-status-pulse {
    0%, 100% { opacity: 0.6; }
    50%      { opacity: 1; }
}

/* Model's chain-of-thought, collapsed by default above the final answer */
.thinking-block {
    max-width: 85%;
    margin: var(--spacing-sm) 0 0 0;
}

.thinking-summary {
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    list-style: none;
    user-select: none;
    padding: 2px 0;
}

.thinking-summary::-webkit-details-marker {
    display: none;
}

.thinking-summary::before {
    content: "▸ ";
    display: inline-block;
    transition: transform var(--transition-fast, 0.15s);
}

.thinking-block[open] .thinking-summary::before {
    transform: rotate(90deg);
}

.thinking-content {
    margin-top: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border-left: 2px solid var(--border-color);
    font-size: var(--font-size-sm);
    line-height: 1.6;
    color: var(--text-secondary);
    font-style: italic;
    white-space: pre-wrap;
}

/* While actively streaming, cap the panel's height and let it scroll rather
   than growing unbounded and shoving the rest of the chat around as
   reasoning arrives. Collapsed <details> (no [open]) hides content anyway,
   so this only takes effect during live thinking. */
.thinking-block[open] .thinking-content {
    max-height: 220px;
    overflow-y: auto;
}

/* Markdown styling for both user and assistant messages */
.message-content h1,
.message-content h2,
.message-content h3,
.message-content h4,
.message-content h5,
.message-content h6 {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
}

.message-content h1:first-child,
.message-content h2:first-child,
.message-content h3:first-child,
.message-content h4:first-child,
.message-content h5:first-child,
.message-content h6:first-child {
    margin-top: 0;
}

.message-content h1 {
    font-size: 1.8em;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: var(--spacing-sm);
}

.message-content h2 {
    font-size: 1.5em;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--spacing-xs);
}

.message-content h3 {
    font-size: 1.3em;
}

.message-content h4 {
    font-size: 1.1em;
}

.message-content p {
    margin-bottom: var(--spacing-md);
}

.message-content p:last-child {
    margin-bottom: 0;
}

.message-content p:first-child {
    margin-top: 0;
}

.message-content ul,
.message-content ol {
    margin: var(--spacing-sm) 0;
    padding-left: var(--spacing-xl);
}

.message-content li {
    margin-bottom: var(--spacing-xs);
}

.message-content blockquote {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-md);
    border-left: 3px solid var(--primary-color);
    color: var(--text-secondary);
    font-style: italic;
}

.message-content a {
    color: var(--primary-color);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition-fast);
}

.message-content a:hover {
    border-bottom-color: var(--primary-color);
}

.message-content hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: var(--spacing-lg) 0;
}

.message-content table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-md) 0;
}

.message-content th,
.message-content td {
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    text-align: left;
}

.message-content th {
    background-color: var(--surface-color);
    font-weight: 600;
}

.message-content pre {
    background-color: #1e1e1e;
    color: #d4d4d4;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: var(--spacing-md) 0;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: var(--font-size-sm);
    line-height: 1.5;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.message-content code {
    background-color: rgba(110, 118, 129, 0.15);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9em;
    color: #d73a49;
}

.message.user .message-content code {
    background-color: rgba(96, 165, 250, 0.25);
    color: #1e40af;
}

.message-content pre code {
    background-color: transparent;
    padding: 0;
    color: inherit;
}

.message-content img {
    max-width: 100%;
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
}

.message-content strong {
    font-weight: 600;
    color: var(--text-primary);
}

.message-content em {
    font-style: italic;
}

.message.typing .message-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.typing-indicator {
    display: flex;
    gap: 4px;
}

.typing-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--text-tertiary);
    animation: typingBounce 1.4s infinite;
}

.typing-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typingBounce {
    0%, 60%, 100% {
        transform: translateY(0);
    }
    30% {
        transform: translateY(-10px);
    }
}

/* Message Action Buttons */
.message-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
    padding: var(--spacing-xs) 0;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.message.assistant:hover .message-actions {
    opacity: 1;
}

.btn-message-action {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--text-secondary);
    background-color: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-message-action:hover {
    background-color: var(--surface-color);
    color: var(--text-primary);
    border-color: var(--text-tertiary);
    transform: none;
    box-shadow: none;
}

.btn-message-action svg {
    width: 14px;
    height: 14px;
}

.btn-message-action[data-action="rate"] svg {
    fill: none;
}

.btn-message-action[data-action="rate"]:hover svg {
    fill: var(--warning-color);
    stroke: var(--warning-color);
}

.btn-message-action[data-action="copy"]:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-message-action[data-action="redo"]:hover {
    color: var(--success-color);
    border-color: var(--success-color);
}

/* Chat Input */
.chat-input-container {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    background-color: var(--background-color);
    position: relative;
}

/* ── Drop overlay ─────────────────────────────────────────────────────── */
.drop-overlay {
    display: none;
    position: absolute;
    inset: 0;
    z-index: 50;
    border-radius: var(--radius-lg);
    background: rgba(var(--primary-color-rgb, 99, 102, 241), 0.12);
    border: 2px dashed var(--primary-color);
    pointer-events: none;
    align-items: center;
    justify-content: center;
}

.drop-overlay.active {
    display: flex;
}

.drop-overlay-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    font-size: var(--font-size-sm);
    font-weight: 500;
    pointer-events: none;
}

.drop-hover {
    outline: 2px dashed var(--primary-color);
    outline-offset: -2px;
}

.chat-input-wrapper {
    position: relative;
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-end;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-sm);
    transition: all var(--transition-fast);
}

/* Race line SVG overlay — injected by JS when streaming */
.race-line-svg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 3;
    overflow: visible;
}

.chat-input-wrapper:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

/* Input locked during response streaming */
.chat-input-wrapper--waiting {
    opacity: 0.55;
    background-color: var(--border-color) !important;
    pointer-events: none;
    cursor: not-allowed;
}

.chat-input-wrapper--waiting:focus-within {
    border-color: var(--border-color);
    box-shadow: none;
}

.chat-input-wrapper--waiting .chat-input {
    color: var(--text-tertiary);
    cursor: not-allowed;
}

/* ── Slash command / rule picker ─────────────────────────────────────────── */
.slash-menu {
    position: absolute;
    bottom: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.14);
    max-height: 320px;
    overflow-y: auto;
    z-index: 500;
}

.slash-menu.hidden {
    display: none;
}

.slash-menu-section-label {
    padding: 8px 14px 4px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-tertiary);
    border-top: 1px solid var(--border-color);
}

.slash-menu-section-label:first-child {
    border-top: none;
}

.slash-menu-item {
    display: flex;
    align-items: baseline;
    gap: 12px;
    padding: 8px 14px;
    cursor: pointer;
    transition: background 0.1s;
}

.slash-menu-item:hover,
.slash-menu-item--active {
    background: var(--primary-light);
}

.slash-menu-cmd {
    font-family: monospace;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary-color);
    white-space: nowrap;
    min-width: 96px;
}

.slash-menu-desc {
    font-size: 12px;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}


.chat-input {
    flex: 1;
    border: none;
    background-color: transparent;
    font-size: var(--font-size-md);
    font-family: var(--font-family);
    resize: none;
    outline: none;
    max-height: 200px;
    line-height: 1.5;
    padding: var(--spacing-sm);
    color: var(--text-primary);
}

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

.input-actions {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
}

/* Private Checkbox */
.private-checkbox-container {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color var(--transition-fast);
    user-select: none;
}

.private-checkbox-container:hover {
    background-color: var(--surface-color);
}

.private-checkbox-container input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.private-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
}

.private-checkbox-container input[type="checkbox"]:checked ~ .private-label {
    color: var(--primary-color);
    font-weight: 600;
}

.btn-send {
    background-color: var(--primary-color);
    color: white;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
}

.btn-send:hover:not(:disabled) {
    background-color: var(--primary-hover);
}

.btn-send:disabled {
    background-color: var(--surface-color);
    color: var(--text-tertiary);
}

/* Voice Button */
#voiceBtn {
    transition: all var(--transition-normal);
}

#voiceBtn.listening {
    background-color: var(--error-color);
    color: white;
    animation: voicePulse 1.5s ease-in-out infinite;
}

#voiceBtn.listening svg {
    stroke: white;
}

#voiceBtn.processing {
    background-color: var(--warning-color);
    color: white;
}

#voiceBtn.processing svg {
    stroke: white;
}

#voiceBtn.error {
    background-color: var(--error-color);
    color: white;
}

#voiceBtn.error svg {
    stroke: white;
}

@keyframes voicePulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(220, 38, 38, 0.7);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 0 0 8px rgba(220, 38, 38, 0);
    }
}

.input-footer {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    margin-top: var(--spacing-xs);
}

.char-count {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -280px;
        z-index: var(--z-sidebar);
        transition: left var(--transition-normal);
        box-shadow: var(--shadow-xl);
    }
    
    .sidebar.open {
        left: 0;
    }
    
    .main-content {
        width: 100%;
    }
    
    .chat-messages {
        padding: var(--spacing-md);
    }
    
    .chat-input-container {
        padding: var(--spacing-sm);
    }
}

/* Empty State */
.empty-history {
    padding: var(--spacing-xl);
    text-align: center;
    color: var(--text-secondary);
}

.empty-history-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.empty-history-text {
    font-size: var(--font-size-sm);
}

/* Folder Styles */
.btn-new-folder {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    background-color: transparent;
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-fast);
}

.btn-new-folder:hover {
    background-color: var(--background-color);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.folder-item {
    margin-bottom: var(--spacing-xs);
}

.folder-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color var(--transition-fast);
    position: relative;
}

.folder-header:hover {
    background-color: var(--background-color);
}

.folder-header:hover .folder-actions {
    opacity: 1;
}

.folder-icon {
    width: 16px;
    height: 16px;
    color: var(--text-secondary);
    transition: transform var(--transition-fast);
}

.folder-icon.expanded {
    transform: rotate(90deg);
}

.folder-icon-folder {
    width: 16px;
    height: 16px;
    color: var(--primary-color);
}

.folder-name {
    flex: 1;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.folder-actions {
    display: flex;
    gap: 4px;
   opacity: 0;
    transition: opacity var(--transition-fast);
}

.folder-action-btn {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-sm);
    background-color: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.folder-action-btn:hover {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

.folder-action-btn[data-action="delete"]:hover {
    background-color: #fee;
    color: #c00;
}

.folder-item.drag-over .folder-header {
    background-color: var(--primary-light);
    border: 2px dashed var(--primary-color);
}

.chat-history-item.dragging {
    opacity: 0.5;
}

/* Uploaded Documents Area */
.uploaded-documents {
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
    background: var(--message-user-bg);
    max-height: 150px;
    overflow-y: auto;
}

.uploaded-documents.hidden {
    display: none;
}

.uploaded-doc-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin-bottom: var(--spacing-xs);
}

.uploaded-doc-info {
    display: flex;
    align-items: center;
    flex: 1;
    min-width: 0;
}

.uploaded-doc-icon {
    width: 32px;
    height: 32px;
    border-radius: 4px;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: var(--spacing-sm);
    flex-shrink: 0;
}

.uploaded-doc-icon svg {
    width: 16px;
    height: 16px;
}

.uploaded-doc-details {
    flex: 1;
    min-width: 0;
}

.uploaded-doc-name {
    font-size: var(--font-size-sm);
font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.uploaded-doc-meta {
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.uploaded-doc-remove {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    flex-shrink: 0;
    margin-left: var(--spacing-sm);
}

.uploaded-doc-remove:hover {
    background: var(--hover-bg);
    color: var(--error-color);
}

.uploaded-doc-remove svg {
    width: 16px;
    height: 16px;
}

/* Rating Popup Styles */
.rating-popup {
    position: absolute;
    bottom: 100%;
    right: 0;
    margin-bottom: 8px;
    background: var(--bg-primary, #ffffff);
    border: 1px solid var(--border-color, #e0e0e0);
    border-radius: 8px;
    padding: 16px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 10000;
    min-width: 240px;
}

.rating-popup-content {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.rating-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary, #333);
    margin-bottom: 4px;
}

.rating-stars {
    display: flex;
    gap: 8px;
    justify-content: center;
}

.star-btn {
    background: transparent;
    border: none;
    font-size: 28px;
    color: #ddd;
    cursor: pointer;
    transition: all 0.2s ease;
    padding: 4px;
    line-height: 1;
}

.star-btn:hover,
.star-btn.hover {
    color: #ffd700;
    transform: scale(1.2);
}

.star-btn:active {
    transform: scale(1.1);
}

.rating-cancel {
    padding: 8px 16px;
    background: var(--bg-secondary, #f5f5f5);
    border: 1px solid var(--border-color, #e0e0e0);
    border-radius: 4px;
    cursor: pointer;
    font-size: 13px;
    color: var(--text-secondary, #666);
    transition: all 0.2s ease;
}

.rating-cancel:hover {
    background: var(--hover-bg, #e8e8e8);
    border-color: #ccc;
}

/* Toast Notification Styles */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--background-color);
    border: 1px solid var(--border-color, #e0e0e0);
    border-radius: 8px;
    padding: 12px 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 2000;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    max-width: 400px;
    font-size: 14px;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast.toast-success {
    border-left: 4px solid #4caf50;
    color: #2e7d32;
}

.toast.toast-error {
    border-left: 4px solid #f44336;
    color: #c62828;
}

.toast.toast-info {
    border-left: 4px solid #2196f3;
    color: #1565c0;
}

/* ── Main content row (chat area + flyout, below header) ─── */
.main-content-row {
    flex: 1;
    display: flex;
    flex-direction: row;
    overflow: hidden;
    min-height: 0;
}

.chat-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
}

/* ── HTML Preview Flyout Panel ───────────────────────────── */
.html-preview-panel {
    width: 0;
    min-width: 0;
    flex-shrink: 0;
    position: relative;             /* needed for abs-positioned resize handle */
    background-color: var(--background-color);
    border-left: none;              /* no visible line when closed */
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: width var(--transition-normal), min-width var(--transition-normal);
}

.html-preview-panel.open {
    width: 440px;
    min-width: 440px;
    border-left: 1px solid var(--border-color);
}

/* Drag-to-resize handle on the left edge of the flyout */
.html-preview-resize-handle {
    position: absolute;
    left: 0;
    top: 0;
    width: 5px;
    height: 100%;
    cursor: col-resize;
    z-index: 10;
    background: transparent;
}

.html-preview-resize-handle:hover,
.html-preview-resize-handle.dragging {
    background: var(--primary-color);
    opacity: 0.4;
}

/* Footer with Print / Save buttons */
.html-preview-footer {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-top: 1px solid var(--border-color);
    background-color: var(--surface-color);
    flex-shrink: 0;
}

.btn-sm {
    padding: 4px var(--spacing-sm);
    font-size: var(--font-size-xs);
}

/* 'View HTML' button injected into user message bubbles for HTML responses */
.btn-view-html-prompt {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: var(--spacing-sm);
    padding: 2px var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-family: var(--font-family);
    color: var(--primary-color);
    background: transparent;
    border: 1px solid var(--primary-color);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: background-color var(--transition-fast);
    height: auto;
}

.btn-view-html-prompt:hover {
    background-color: var(--primary-light, rgba(99,102,241,0.08));
}

.html-preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    background-color: var(--surface-color);
    flex-shrink: 0;
    min-width: 0;
    white-space: nowrap;
    position: relative;
    z-index: 20;
}

.html-preview-title-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-primary);
}

.html-preview-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.html-preview-body {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

#htmlPreviewFrame {
    flex: 1;
    width: 100%;
    border: none;
    background: #ffffff;
    min-height: 0;
}

/* ── Iframe focus-stealing fix ────────────────────────────────────────────
   When the user has been clicking inside the iframe, the browser holds
   pointer ownership there. If they then try to click the close / print /
   save buttons, some Chromium builds "eat" the first click restoring
   parent focus. Fix: disable pointer-events on the iframe while the mouse
   is over the header or footer (where all panel controls live), so the
   parent document always receives those clicks cleanly.
   ──────────────────────────────────────────────────────────────────────── */
.html-preview-panel:has(.html-preview-header:hover) #htmlPreviewFrame,
.html-preview-panel:has(.html-preview-footer:hover) #htmlPreviewFrame {
    pointer-events: none;
}

/* Card shown in the chat bubble for HTML responses */
.html-preview-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--primary-light);
    border: 1px solid var(--primary-color);
    border-radius: var(--radius-md);
    cursor: default;
}

.html-preview-card-text {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.html-preview-card-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.html-preview-card-desc {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

/* Dark-mode adjustments for the iframe wrapper */
body.dark-mode #htmlPreviewFrame {
    background: #ffffff; /* keep iframe white regardless of theme */
}

/* ========== RULES SECTION ========== */

.rules-section {
    flex: 0 1 auto;
    max-height: 300px;
    min-height: 44px;
    overflow-y: auto;
    margin-bottom: 0;
}

.rules-list {
    padding: var(--spacing-sm);
}

.btn-new-rule {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    background-color: transparent;
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-fast);
}

.btn-new-rule:hover {
    background-color: var(--background-color);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.rule-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-xs);
    background-color: var(--message-bg);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.rule-item:hover {
    background-color: var(--hover-bg);
    border-color: var(--primary-color);
}

.rule-item-name {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.rule-item-delete {
    opacity: 0;
    flex-shrink: 0;
    padding: 2px 4px;
    margin-left: var(--spacing-xs);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: opacity 0.15s, color 0.15s;
    line-height: 1;
}

.rule-item-edit {
    opacity: 0;
    flex-shrink: 0;
    padding: 2px 4px;
    margin-left: auto;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: opacity 0.15s, color 0.15s;
    line-height: 1;
}

.rule-item:hover .rule-item-edit,
.rule-item:hover .rule-item-delete {
    opacity: 1;
}

.rule-item-edit:hover {
    color: var(--primary-color);
}

.rule-item-delete:hover {
    color: var(--error-color, #dc3545);
}

/* ========== NEW RULE OVERLAY ========== */

.rule-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.55);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.rule-overlay.hidden {
    display: none;
}

.rule-overlay-box {
    background-color: var(--surface-color, var(--background-color));
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    width: clamp(320px, 40vw, 680px);
    max-width: 95vw;
    max-height: 45vh;
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-gutter: stable;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.rule-overlay-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin: 0;
    color: var(--text-primary);
}

.rule-form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.rule-form-group label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

.rule-form-control {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--input-bg, var(--background-color));
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    font-family: inherit;
    outline: none;
    transition: border-color 0.15s;
}

.rule-form-control:focus {
    border-color: var(--primary-color);
}

.rule-text-editor {
    min-height: 80px;
    max-height: 20vh;
    overflow-y: auto;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--input-bg, var(--background-color));
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    font-family: inherit;
    outline: none;
    transition: border-color 0.15s;
    white-space: pre-wrap;
    word-wrap: break-word;
    line-height: 1.5;
}

.rule-text-editor:focus {
    border-color: var(--primary-color);
}

.rule-text-editor:empty::before {
    content: attr(data-placeholder);
    color: var(--text-secondary);
    pointer-events: none;
}

.rule-overlay-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
}

/* ========== COLLABORATION SECTION ========== */

.collab-section {
    flex: 0 1 auto;
    min-height: 44px;
    overflow-y: auto;
}

.collab-body {
    padding: var(--spacing-xs) 0;
}

/* Sub-section header */
.collab-sub-section {
    border-top: 1px solid var(--border-color);
}

.collab-sub-section:first-child {
    border-top: none;
}

.collab-sub-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-xs) var(--spacing-md);
    cursor: default;
    user-select: none;
}

.collab-sub-header span {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

/* Unread count badge next to Inbox label */
.inbox-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 16px;
    height: 16px;
    padding: 0 4px;
    border-radius: 8px;
    background: var(--primary-color, #7c3aed);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    line-height: 1;
    vertical-align: middle;
    margin-left: 4px;
    text-transform: none;
    letter-spacing: 0;
}

.inbox-badge.hidden {
    display: none;
}

/* Flash highlight when a new message arrives via polling */
@keyframes inboxNewFlash {
    0%   { background-color: rgba(124, 58, 237, 0.25); }
    100% { background-color: transparent; }
}

.collab-message-item.inbox-new-flash {
    animation: inboxNewFlash 1.8s ease-out forwards;
}

.collab-sub-list {
    padding: var(--spacing-xs) var(--spacing-sm);
}

/* Individual user item */
.collab-user-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.collab-user-item:hover {
    background-color: var(--hover-bg);
}

.collab-user-avatar {
    flex-shrink: 0;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    text-transform: uppercase;
}

.collab-user-name {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Active-in-collaboration: user is a participant in the currently open shared chat */
.collab-user-item--collab-active {
    background-color: rgba(34, 197, 94, 0.08);
    border-left: 2px solid var(--collab-active-color, #22c55e);
}

.collab-user-item--collab-active .collab-user-avatar {
    background-color: var(--collab-active-color, #22c55e);
    box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.35);
}

.collab-user-item--collab-active .collab-user-name {
    color: var(--collab-active-color, #22c55e);
    font-weight: 600;
}

.collab-user-item--collab-active::after {
    content: '';
    display: block;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background-color: var(--collab-active-color, #22c55e);
    margin-left: auto;
    flex-shrink: 0;
    box-shadow: 0 0 4px rgba(34, 197, 94, 0.6);
}

/* Empty / loading states */
.collab-loading,
.collab-empty {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-style: italic;
}

/* ===== COMPOSE OVERLAY ===== */

.compose-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: 1100;
    display: flex;
    align-items: center;
    justify-content: center;
}

.compose-overlay.hidden {
    display: none;
}

.compose-box {
    background: var(--bg-secondary, #1e1e2e);
    border: 1px solid var(--border-color, #333);
    border-radius: 10px;
    padding: 1.5rem 2rem;
    width: 600px;
    max-width: calc(100vw - 2rem);
    max-height: 90vh;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}

.compose-title {
    margin: 0 0 0.25rem 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary, #e0e0e0);
}

.compose-field {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.compose-field-body {
    flex: 1;
}

.compose-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary, #888);
    font-weight: 600;
}

.compose-to-wrapper {
    border: 1px solid var(--border-color, #555);
    border-radius: 6px;
    padding: 0.4rem;
    min-height: 2.25rem;
    background: #1a1a1a;
}

.compose-to-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
}

.compose-to-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.15rem 0.5rem;
    background: var(--accent, #7c3aed);
    color: #fff;
    border-radius: 999px;
    font-size: 0.8rem;
    white-space: nowrap;
}

.compose-to-tag-remove {
    background: none;
    border: none;
    color: rgba(255,255,255,0.75);
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
    padding: 0;
    display: flex;
    align-items: center;
}

.compose-to-tag-remove:hover {
    color: #fff;
}

.compose-from {
    padding: 0.45rem 0.6rem;
    border: 1px solid var(--border-color, #555);
    border-radius: 6px;
    background: #1a1a1a;
    color: #aaa;
    font-size: 0.88rem;
    min-height: 2rem;
}

.compose-input {
    padding: 0.45rem 0.6rem;
    border: 1px solid var(--border-color, #555);
    border-radius: 6px;
    background: #1a1a1a;
    color: #f0f0f0;
    font-size: 0.9rem;
    outline: none;
    width: 100%;
    box-sizing: border-box;
}

.compose-input:focus {
    border-color: #7c3aed;
    box-shadow: 0 0 0 2px rgba(124, 58, 237, 0.25);
}

.compose-body {
    min-height: 160px;
    max-height: 320px;
    overflow-y: auto;
    padding: 0.6rem;
    border: 1px solid var(--border-color, #555);
    border-radius: 6px;
    background: #1a1a1a;
    color: #f0f0f0;
    font-size: 0.9rem;
    line-height: 1.5;
    white-space: pre-wrap;
    outline: none;
}

.compose-body:focus {
    border-color: #7c3aed;
    box-shadow: 0 0 0 2px rgba(124, 58, 237, 0.25);
}

.compose-body:empty::before {
    content: attr(data-placeholder);
    color: #777;
    pointer-events: none;
}

.compose-actions {
    display: flex;
    flex-direction: row;
    gap: 0.5rem;
    justify-content: flex-end;
    padding-top: 0.25rem;
}

/* Message list items (sent / inbox) */

.collab-message-item {
    padding: 0.45rem 0.6rem;
    border-radius: 6px;
    background: var(--bg-tertiary, rgba(255,255,255,0.03));
    border: 1px solid var(--border-color, #2a2a2a);
    margin-bottom: 0.35rem;
    cursor: pointer;
    transition: background 0.15s;
}

.collab-message-item:hover {
    background: var(--bg-hover, rgba(255,255,255,0.07));
}

.collab-msg-subject {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary, #e0e0e0);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.collab-msg-meta {
    font-size: 0.75rem;
    color: var(--text-secondary, #888);
    margin-top: 0.15rem;
}

/* Ghost button variant */
.btn-ghost {
    background: transparent;
    border: 1px solid var(--border-color, #444);
    color: var(--text-secondary, #888);
}

.btn-ghost:hover {
    background: var(--bg-hover, rgba(255,255,255,0.07));
    color: var(--text-primary, #e0e0e0);
}

/* Unread inbox message highlight */
.collab-message-item.unread {
    border-left: 3px solid #7c3aed;
    background: rgba(124, 58, 237, 0.08);
}

.collab-message-item.unread .collab-msg-subject {
    color: #c4b5fd;
    font-weight: 700;
}

/* Danger button (delete) */
.btn-danger {
    background: #7f1d1d;
    border: 1px solid #991b1b;
    color: #fca5a5;
    border-radius: 6px;
    padding: 0.45rem 1rem;
    font-size: 0.875rem;
    cursor: pointer;
    transition: background 0.15s;
}

.btn-danger:hover {
    background: #991b1b;
    color: #fff;
}

/* Message view overlay box */
.msg-view-box {
    max-width: 640px;
    width: 95%;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
}

.msg-view-meta {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    font-size: 0.82rem;
    color: #aaa;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
    gap: 0.25rem;
}

.msg-view-meta strong {
    color: #c4b5fd;
}

.msg-view-body {
    flex: 1;
    overflow-y: auto;
    background: #1a1a1a;
    border: 1px solid #333;
    border-radius: 6px;
    padding: 0.75rem;
    font-size: 0.9rem;
    color: #f0f0f0;
    min-height: 120px;
    max-height: 50vh;
    white-space: pre-wrap;
    word-break: break-word;
    margin-bottom: 0.75rem;
}

.msg-view-text {
    white-space: pre-wrap;
    word-break: break-word;
}

.msg-view-divider {
    border: none;
    border-top: 1px solid #333;
    margin: 0.75rem 0 0.5rem;
}

.msg-view-excerpt-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #888;
    margin-bottom: 0.5rem;
}

.msg-view-excerpt-row {
    margin-bottom: 0.4rem;
    font-size: 0.85rem;
    color: #ccc;
}

.msg-view-excerpt-row strong {
    color: #a78bfa;
}

/* ========== FAQ OVERLAY ========== */

/* Default (light mode) FAQ colour tokens */
:root {
    --faq-bg:           #ffffff;
    --faq-header-bg:    #f3f4f6;
    --faq-border:       var(--border-color, #e8eaed);
    --faq-text:         #202124;
    --faq-text-muted:   #5f6368;
    --faq-hover:        rgba(0, 0, 0, 0.04);
    --faq-code-bg:      rgba(0, 0, 0, 0.06);
    --faq-kbd-bg:       rgba(0, 0, 0, 0.07);
    --faq-kbd-border:   rgba(0, 0, 0, 0.2);
    --faq-table-head:   rgba(0, 0, 0, 0.04);
    --faq-mark-bg:      rgba(66, 133, 244, 0.2);
}

/* Dark mode overrides */
body.dark-mode {
    --faq-bg:           #1e1e2e;
    --faq-header-bg:    #16182a;
    --faq-border:       var(--border-color, #333);
    --faq-text:         #e8eaed;
    --faq-text-muted:   #9aa0a6;
    --faq-hover:        rgba(255, 255, 255, 0.04);
    --faq-code-bg:      rgba(255, 255, 255, 0.08);
    --faq-kbd-bg:       rgba(255, 255, 255, 0.1);
    --faq-kbd-border:   rgba(255, 255, 255, 0.2);
    --faq-table-head:   rgba(255, 255, 255, 0.04);
    --faq-mark-bg:      rgba(124, 58, 237, 0.3);
}

.faq-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1200;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 2rem 1rem;
    overflow-y: auto;
}

.faq-overlay.hidden {
    display: none;
}

.faq-modal {
    background: var(--faq-bg);
    border: 1px solid var(--faq-border);
    border-radius: 12px;
    width: 100%;
    max-width: 820px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 24px 60px rgba(0,0,0,0.5);
    overflow: hidden;
}

/* Header */
.faq-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--faq-border);
    background: var(--faq-header-bg);
    flex-wrap: wrap;
}

.faq-title {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.faq-title h2 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--faq-text);
    margin: 0;
}

.faq-title svg {
    flex-shrink: 0;
    color: var(--primary-color, #7c3aed);
}

.faq-header-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.faq-search-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.faq-search-wrap svg {
    position: absolute;
    left: 0.6rem;
    color: var(--faq-text-muted);
    pointer-events: none;
}

.faq-search-input {
    padding: 0.45rem 0.75rem 0.45rem 2rem;
    border: 1px solid var(--faq-border);
    border-radius: var(--radius-full, 999px);
    background: var(--faq-bg);
    color: var(--faq-text);
    font-size: 0.85rem;
    font-family: var(--font-family);
    width: 220px;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.faq-search-input:focus {
    outline: none;
    border-color: var(--primary-color, #7c3aed);
    box-shadow: 0 0 0 3px var(--primary-light, rgba(124,58,237,0.18));
}

.faq-close-btn {
    flex-shrink: 0;
}

/* Body */
.faq-body {
    padding: 1rem 0;
    overflow-y: auto;
    max-height: calc(100vh - 10rem);
}

/* Category */
.faq-category {
    border-bottom: 1px solid var(--faq-border);
}

.faq-category:last-of-type {
    border-bottom: none;
}

.faq-category-header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 1.5rem;
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--font-family);
    color: var(--faq-text);
    font-size: 0.95rem;
    font-weight: 600;
    text-align: left;
    transition: background 0.15s;
}

.faq-category-header:hover {
    background: var(--faq-hover);
}

.faq-category-header > span {
    display: flex;
    align-items: center;
    gap: 0.55rem;
}

.faq-category-header > span svg {
    flex-shrink: 0;
    color: var(--primary-color, #7c3aed);
}

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

.faq-category-header[aria-expanded="true"] .faq-chevron {
    transform: rotate(180deg);
}

.faq-category-body {
    padding: 0 1.5rem 0.75rem;
}

.faq-category-body[hidden] {
    display: none;
}

/* Q&A items */
.faq-item {
    border-radius: 8px;
    margin-bottom: 2px;
    overflow: hidden;
}

.faq-item.faq-hidden {
    display: none;
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.65rem 0.85rem;
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--font-family);
    color: var(--faq-text);
    font-size: 0.88rem;
    font-weight: 500;
    text-align: left;
    border-radius: 6px;
    transition: background 0.15s;
}

.faq-question:hover {
    background: var(--faq-hover);
}

.faq-question[aria-expanded="true"] {
    color: var(--primary-color);
    background: var(--faq-hover);
}

.faq-question::after {
    content: '+';
    flex-shrink: 0;
    font-size: 1.1rem;
    color: var(--faq-text-muted);
    margin-left: 0.5rem;
    transition: transform 0.2s;
    line-height: 1;
}

.faq-question[aria-expanded="true"]::after {
    content: '−';
    color: var(--primary-color, #7c3aed);
}

.faq-answer {
    display: none;
    padding: 0.35rem 0.85rem 0.85rem 0.85rem;
    font-size: 0.85rem;
    line-height: 1.65;
    color: var(--faq-text-muted);
}

.faq-answer.open {
    display: block;
}

.faq-answer p { margin: 0 0 0.6rem; }
.faq-answer p:last-child { margin-bottom: 0; }
.faq-answer ul, .faq-answer ol { margin: 0.4rem 0 0.6rem 1.4rem; }
.faq-answer li { margin-bottom: 0.25rem; }
.faq-answer code {
    background: var(--faq-code-bg);
    padding: 0.1em 0.4em;
    border-radius: 4px;
    font-size: 0.82rem;
    font-family: monospace;
    color: var(--faq-text);
}
.faq-answer em { font-style: italic; }
.faq-answer strong { font-weight: 600; color: var(--faq-text); }

/* Keyboard shortcuts table */
.faq-shortcuts-table {
    width: 100%;
    border-collapse: collapse;
    margin: 0.5rem 0;
    font-size: 0.83rem;
}

.faq-shortcuts-table th,
.faq-shortcuts-table td {
    padding: 0.4rem 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--faq-border);
    color: var(--faq-text-muted);
}

.faq-shortcuts-table th {
    color: var(--faq-text);
    font-weight: 600;
    background: var(--faq-table-head);
}

.faq-shortcuts-table td:first-child {
    white-space: nowrap;
}

.faq-note {
    font-size: 0.8rem;
    color: var(--faq-text-muted);
    margin-top: 0.5rem;
    font-style: italic;
}

kbd {
    display: inline-block;
    padding: 0.1em 0.45em;
    background: var(--faq-kbd-bg);
    border: 1px solid var(--faq-kbd-border);
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.8em;
    line-height: 1.5;
    white-space: nowrap;
    color: var(--faq-text);
}

/* "No results" state */
.faq-no-results {
    padding: 2rem;
    text-align: center;
    color: var(--faq-text-muted);
    font-size: 0.9rem;
}

.faq-no-results.hidden {
    display: none;
}

/* Search highlight */
mark.faq-mark {
    background: var(--faq-mark-bg);
    color: inherit;
    border-radius: 2px;
    padding: 0 1px;
}

@media (max-width: 600px) {
    .faq-modal-header {
        flex-direction: column;
        align-items: flex-start;
    }
    .faq-search-input {
        width: 160px;
    }
    .faq-category-header,
    .faq-category-body {
        padding-left: 1rem;
        padding-right: 1rem;
    }
}

/* ============================================================
   SHARED CHAT PANEL  (scoped --sc-* variables like --faq-*)
   ============================================================ */
:root {
    /* light mode */
    --sc-overlay-bg:      rgba(0,0,0,0.5);
    --sc-modal-bg:        #ffffff;
    --sc-modal-border:    #e2e2e9;
    --sc-header-bg:       #f5f5fa;
    --sc-header-fg:       #1a1a2e;
    --sc-title-fg:        #1a1a2e;
    --sc-participants-fg: #5a5a7a;
    --sc-msg-bg:          #f9f9fd;
    --sc-msg-border:      #e8e8f0;
    --sc-user-bubble-bg:  #7c3aed;
    --sc-user-bubble-fg:  #ffffff;
    --sc-ai-bubble-bg:    #ededf8;
    --sc-ai-bubble-fg:    #1a1a2e;
    --sc-meta-fg:         #888899;
    --sc-input-bg:        #ffffff;
    --sc-input-border:    #d0d0e0;
    --sc-input-fg:        #1a1a2e;
    --sc-input-focus:     #7c3aed;
    --sc-typing-dot:      #7c3aed;
    --sc-new-bg:          #ffffff;
    --sc-new-border:      #e2e2e9;
    --sc-tag-bg:          #ededf8;
    --sc-tag-fg:          #3a3a5e;
    --sc-tag-remove:      #7c3aed;
    --sc-label-fg:        #3a3a5e;
}
body.dark-mode {
    --sc-overlay-bg:      rgba(0,0,0,0.7);
    --sc-modal-bg:        #1e1e2e;
    --sc-modal-border:    #2e2e4e;
    --sc-header-bg:       #252540;
    --sc-header-fg:       #e0e0f8;
    --sc-title-fg:        #e8e8ff;
    --sc-participants-fg: #9898c8;
    --sc-msg-bg:          #181828;
    --sc-msg-border:      #2e2e4e;
    --sc-user-bubble-bg:  #7c3aed;
    --sc-user-bubble-fg:  #ffffff;
    --sc-ai-bubble-bg:    #252540;
    --sc-ai-bubble-fg:    #d8d8f8;
    --sc-meta-fg:         #6868a8;
    --sc-input-bg:        #252540;
    --sc-input-border:    #3e3e6e;
    --sc-input-fg:        #e0e0f8;
    --sc-input-focus:     #9f6eff;
    --sc-typing-dot:      #9f6eff;
    --sc-new-bg:          #1e1e2e;
    --sc-new-border:      #3e3e6e;
    --sc-tag-bg:          #2e2e50;
    --sc-tag-fg:          #c8c8f0;
    --sc-tag-remove:      #9f6eff;
    --sc-label-fg:        #a0a0d0;
}

/* ── Full-page overlay ── */
.sc-panel {
    /* Inline flex sibling inside .main-content-row — not a full-screen overlay */
    flex-shrink: 0;
    width: 440px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border-left: 1px solid var(--sc-modal-border);
    background: var(--sc-modal-bg);
}
.sc-panel.hidden { display: none; }

.sc-modal {
    background: var(--sc-modal-bg);
    border-left: none;
    width: 100%;
    display: flex;
    flex-direction: column;
    flex: 1;
    overflow: hidden;
}

/* ── Header ── */
.sc-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 1rem;
    background: var(--sc-header-bg);
    border-bottom: 1px solid var(--sc-modal-border);
    gap: 0.5rem;
}
.sc-header-left {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    min-width: 0;
}
.sc-back-btn {
    flex-shrink: 0;
    color: var(--sc-header-fg);
}
.sc-title-block {
    display: flex;
    flex-direction: column;
    min-width: 0;
}
.sc-title {
    font-weight: 600;
    font-size: 0.97rem;
    color: var(--sc-title-fg);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sc-participants {
    font-size: 0.75rem;
    color: var(--sc-participants-fg);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sc-header-right {
    flex-shrink: 0;
}

/* ── Messages ── */
.sc-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    background: var(--sc-msg-bg);
}

.sc-message {
    display: flex;
    flex-direction: column;
    max-width: 85%;
}
.sc-message.user-msg {
    align-self: flex-end;
    align-items: flex-end;
}
.sc-message.ai-msg {
    align-self: flex-start;
    align-items: flex-start;
}

.sc-bubble {
    padding: 0.6rem 0.9rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    line-height: 1.55;
    white-space: pre-wrap;
    word-break: break-word;
}
.sc-message.user-msg .sc-bubble {
    background: var(--sc-user-bubble-bg);
    color: var(--sc-user-bubble-fg);
    border-bottom-right-radius: 0.25rem;
}
.sc-message.ai-msg .sc-bubble {
    background: var(--sc-ai-bubble-bg);
    color: var(--sc-ai-bubble-fg);
    border-bottom-left-radius: 0.25rem;
}

.sc-msg-meta {
    font-size: 0.7rem;
    color: var(--sc-meta-fg);
    margin-top: 0.2rem;
    padding: 0 0.25rem;
}

/* ── Typing indicator ── */
.sc-typing {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.6rem 1rem;
    background: var(--sc-msg-bg);
}
.sc-typing.hidden { display: none; }
.sc-typing-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--sc-typing-dot);
    animation: scDotPulse 1.2s ease-in-out infinite;
}
.sc-typing-dot:nth-child(2) { animation-delay: 0.2s; }
.sc-typing-dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes scDotPulse {
    0%, 100% { opacity: 0.3; transform: scale(0.8); }
    50%       { opacity: 1;   transform: scale(1.1); }
}
.sc-typing-label {
    font-size: 0.75rem;
    color: var(--sc-participants-fg);
    margin-left: 0.3rem;
}

/* ── Input bar ── */
.sc-input-bar {
    display: flex;
    align-items: flex-end;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border-top: 1px solid var(--sc-modal-border);
    background: var(--sc-modal-bg);
}
.sc-input {
    flex: 1;
    background: var(--sc-input-bg);
    border: 1px solid var(--sc-input-border);
    border-radius: 0.6rem;
    color: var(--sc-input-fg);
    font-size: 0.875rem;
    padding: 0.55rem 0.75rem;
    resize: none;
    max-height: 140px;
    overflow-y: auto;
    line-height: 1.5;
    font-family: inherit;
    transition: border-color 0.15s;
}
.sc-input:focus {
    outline: none;
    border-color: var(--sc-input-focus);
}
.sc-send-btn {
    flex-shrink: 0;
    padding: 0.5rem;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ── Shared chat list items in sidebar ── */
.sc-list-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.45rem 0.6rem;
    border-radius: 0.4rem;
    cursor: pointer;
    font-size: 0.82rem;
    color: var(--text-primary, #1a1a2e);
    transition: background 0.12s;
}
.sc-list-item:hover { background: rgba(124,58,237,0.08); }
.sc-list-item .sc-item-icon {
    flex-shrink: 0;
    color: var(--accent-primary, #7c3aed);
    opacity: 0.75;
}
.sc-list-item .sc-item-label {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sc-list-item .sc-item-count {
    font-size: 0.7rem;
    color: var(--sc-meta-fg);
}
.sc-delete-btn {
    flex-shrink: 0;
    opacity: 0;
    color: var(--sc-meta-fg);
    padding: 3px;
    border-radius: 4px;
    transition: opacity 0.15s, color 0.15s;
}
.sc-list-item:hover .sc-delete-btn {
    opacity: 1;
}
.sc-delete-btn:hover {
    color: #e05050;
    background: rgba(224, 80, 80, 0.1);
}

/* ── Group messages (@message) \u2014 centered notice banner ── */
.sc-group-msg {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.3rem 1rem;
    margin: 0.25rem 0;
    font-size: 0.8rem;
    text-align: center;
    flex-wrap: wrap;
}
.sc-group-msg::before,
.sc-group-msg::after {
    content: '';
    flex: 1;
    border-top: 1px solid var(--sc-msg-border);
    min-width: 2rem;
    margin-top: 0.5em;
}
.sc-group-author {
    font-weight: 600;
    color: var(--sc-participants-fg);
    white-space: nowrap;
}
.sc-group-content {
    color: var(--sc-input-fg);
    word-break: break-word;
}
.sc-group-ts {
    color: var(--sc-meta-fg);
    font-size: 0.7rem;
    white-space: nowrap;
}
.sc-new-badge {
    display: inline-block;
    min-width: 18px;
    padding: 0 5px;
    height: 18px;
    border-radius: 9px;
    background: var(--sc-user-bubble-bg);
    color: #fff;
    font-size: 0.65rem;
    font-weight: 700;
    text-align: center;
    line-height: 18px;
}

/* ── New Chat / Invite modals ── */
.sc-new-overlay {
    position: fixed;
    inset: 0;
    z-index: 3200;
    background: var(--sc-overlay-bg);
    display: flex;
    align-items: center;
    justify-content: center;
}
.sc-new-overlay.hidden { display: none; }

.sc-new-modal {
    background: var(--sc-new-bg);
    border: 1px solid var(--sc-new-border);
    border-radius: 0.75rem;
    width: min(440px, 92vw);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}
.sc-new-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 1rem;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--sc-header-fg);
    border-bottom: 1px solid var(--sc-new-border);
    background: var(--sc-header-bg);
}
.sc-new-body {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.sc-new-body label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--sc-label-fg);
    margin-top: 0.25rem;
}
.sc-new-input {
    background: var(--sc-input-bg);
    border: 1px solid var(--sc-input-border);
    border-radius: 0.5rem;
    color: var(--sc-input-fg);
    font-size: 0.875rem;
    padding: 0.5rem 0.75rem;
    font-family: inherit;
    transition: border-color 0.15s;
}
.sc-new-input:focus {
    outline: none;
    border-color: var(--sc-input-focus);
}
.sc-new-participants-row {
    display: flex;
    gap: 0.4rem;
}
.sc-new-participants-row .sc-new-input { flex: 1; }
.sc-tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin-top: 0.25rem;
    min-height: 0;
}
.sc-tag {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    background: var(--sc-tag-bg);
    color: var(--sc-tag-fg);
    border-radius: 1rem;
    padding: 0.2rem 0.6rem 0.2rem 0.7rem;
    font-size: 0.78rem;
}
.sc-tag-remove {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--sc-tag-remove);
    font-size: 0.9rem;
    line-height: 1;
    padding: 0;
    display: flex;
    align-items: center;
}
.sc-new-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border-top: 1px solid var(--sc-new-border);
    background: var(--sc-header-bg);
}

/* Flash animation for newly polled messages */
.sc-message.sc-new-flash {
    animation: scFlash 1.2s ease-out forwards;
}
@keyframes scFlash {
    0%   { background: rgba(124,58,237,0.15); }
    100% { background: transparent; }
}

@media (max-width: 600px) {
    .sc-modal { width: 100vw; }
    .sc-message { max-width: 95%; }
}

/* ==========================================================================
   RAG Upload Panel
   ========================================================================== */

/* Sidebar section body — collapsed by default */
.rag-body {
    display: none;
    flex-direction: column;
    gap: 0;
    padding: 0 0 4px 0;
}
.rag-body.open {
    display: flex;
}

/* Drop zone */
.rag-drop-zone {
    margin: 8px 12px;
    padding: 18px 12px;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    text-align: center;
    font-size: 0.78rem;
    color: var(--text-muted, #888);
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
}
.rag-drop-zone.drag-over {
    border-color: var(--primary-color, #7c3aed);
    background: rgba(124, 58, 237, 0.06);
    color: var(--primary-color, #7c3aed);
}

/* Upload action buttons row */
.rag-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 4px 12px;
}
.rag-actions .btn {
    font-size: 0.75rem;
    padding: 4px 10px;
    flex: 1 1 auto;
}

/* Upload destination hint (uploads go into the currently-open folder) */
.rag-upload-hint {
    font-size: 0.72rem;
    line-height: 1.4;
    color: var(--text-muted, #888);
    padding: 4px 12px;
}
.rag-upload-hint code {
    font-size: 0.7rem;
    padding: 1px 4px;
    border-radius: 4px;
    background: var(--bg-secondary, rgba(127,127,127,0.15));
    color: var(--text-primary);
}

/* Breadcrumb */
.rag-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    padding: 4px 12px 2px;
    font-size: 0.72rem;
    color: var(--text-muted, #888);
    min-height: 22px;
}
.rag-bc-link {
    cursor: pointer;
    color: var(--primary-color, #7c3aed);
    text-decoration: underline;
    text-underline-offset: 2px;
}
.rag-bc-link:hover { opacity: 0.75; }
.rag-bc-sep {
    color: var(--text-muted, #aaa);
    margin: 0 1px;
}

/* File tree */
.rag-file-tree {
    margin: 4px 8px 4px;
    max-height: 260px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-secondary, var(--sidebar-bg));
}
.rag-entry {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 8px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.76rem;
    min-width: 0;
}
.rag-entry:last-child { border-bottom: none; }
.rag-entry-icon { flex-shrink: 0; font-size: 1rem; line-height: 1; }
.rag-entry-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--text-primary);
}
.rag-entry-link {
    cursor: pointer;
    color: var(--primary-color, #7c3aed);
    text-decoration: underline;
    text-underline-offset: 2px;
}
.rag-entry-link:hover { opacity: 0.75; }
.rag-entry-meta {
    flex-shrink: 0;
    font-size: 0.7rem;
    color: var(--text-muted, #aaa);
    min-width: 40px;
    text-align: right;
}
.rag-delete-btn {
    flex-shrink: 0;
    opacity: 0.4;
    transition: opacity 0.15s;
    color: var(--text-danger, #dc2626);
    background: none;
    border: none;
    padding: 2px 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
}
.rag-entry:hover .rag-delete-btn { opacity: 1; }
.rag-delete-btn:disabled { opacity: 0.15; cursor: default; }

/* Rename button */
.rag-rename-btn {
    flex-shrink: 0;
    opacity: 0.4;
    transition: opacity 0.15s;
    color: var(--text-muted, #888);
    background: none;
    border: none;
    padding: 2px 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
}
.rag-entry:hover .rag-rename-btn { opacity: 1; }

/* Insert-into-chat button */
.rag-insert-btn {
    flex-shrink: 0;
    opacity: 0;
    transition: opacity 0.15s;
    color: var(--primary-color, #4f8ef7);
    background: none;
    border: none;
    padding: 2px 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
}
.rag-entry:hover .rag-insert-btn { opacity: 1; }

/* Drag cursor and ghost on file rows */
.rag-file[draggable="true"] { cursor: grab; }
.rag-file.rag-dragging { opacity: 0.5; }

/* Chat input highlight when a RAG file is dragged over it */
.chat-input.rag-drag-over {
    outline: 2px dashed var(--primary-color, #4f8ef7);
    outline-offset: 2px;
    background: rgba(79, 142, 247, 0.07);
}

/* In-overlay drop-to-chat banner (shown only during a file drag) */
.rag-chat-drop-zone {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 8px;
    position: sticky;
    bottom: 0;
    margin: 8px -16px -16px;
    padding: 12px 16px;
    background: var(--panel-bg, #1a1a2e);
    border-top: 2px dashed var(--primary-color, #4f8ef7);
    border-radius: 0 0 10px 10px;
    color: var(--primary-color, #4f8ef7);
    font-size: 0.82rem;
    font-weight: 500;
    cursor: default;
    transition: background 0.15s;
    z-index: 10;
    pointer-events: none;   /* ignore pointer until visible */
}
.rag-chat-drop-zone.visible {
    display: flex;
    pointer-events: auto;
}
.rag-chat-drop-zone.active {
    background: rgba(79, 142, 247, 0.18);
}
.rag-empty {
    padding: 14px 12px;
    font-size: 0.75rem;
    color: var(--text-muted, #aaa);
    text-align: center;
}

/* Status message */
.rag-status {
    margin: 4px 12px 2px;
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 0.75rem;
    line-height: 1.4;
}
.rag-status.hidden { display: none; }
.rag-status-info    { background: rgba(59,130,246,0.12);  color: var(--text-primary); }
.rag-status-success { background: rgba(34,197,94,0.12);   color: #16a34a; }
.rag-status-warn    { background: rgba(234,179,8,0.12);   color: #a16207; }
.rag-status-error   { background: rgba(220,38,38,0.12);   color: #dc2626; }

/* Spinner */
.rag-spinner {
    display: flex;
    justify-content: center;
    padding: 4px 0 2px;
}
.rag-spinner.hidden { display: none; }
.rag-spinner::after {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary-color, #7c3aed);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Toolbar row (breadcrumb + refresh) */
.rag-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 2px 8px 0;
}
.rag-refresh-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted, #888);
    padding: 3px;
    display: flex;
    align-items: center;
    border-radius: 4px;
    flex-shrink: 0;
}
.rag-refresh-btn:hover { color: var(--text-primary); background: var(--hover-bg, rgba(0,0,0,0.06)); }