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

:root {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-tertiary: #0f3460;
    --text-primary: #eaeaea;
    --text-secondary: #a0a0a0;
    --accent: #5b9bd5;
    --accent-hover: #7fb3e3;
    --border: #2a2a4a;
    --message-own: #0f3460;
    --message-other: #1a1a2e;
    --tag-bg: #2a2a4a;
    --success: #4ade80;
    --error: #ef4444;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    height: 100vh;
    display: flex;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 240px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

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

.sidebar-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sidebar-header h2::before {
    content: "💬";
}

.channel-list {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem 0;
}

.channel-section {
    padding: 0.5rem 1rem;
}

.channel-section-title {
    font-size: 0.7rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 0.5rem;
    letter-spacing: 0.05em;
}

/* Channel Groups - Collapsible */
.channel-group {
    margin-bottom: 0.25rem;
}

.channel-group-header {
    display: flex;
    align-items: center;
    padding: 0.4rem 0.75rem;
    cursor: pointer;
    user-select: none;
    border-radius: 4px;
    transition: background 0.15s;
}

.channel-group-header:hover {
    background: var(--bg-tertiary);
}

.channel-group-toggle {
    width: 16px;
    height: 16px;
    margin-right: 0.5rem;
    transition: transform 0.15s;
    color: var(--text-secondary);
}

.channel-group.collapsed .channel-group-toggle {
    transform: rotate(-90deg);
}

.channel-group-name {
    font-size: 0.75rem;
    text-transform: uppercase;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    flex: 1;
}

.channel-group-count {
    font-size: 0.7rem;
    color: var(--text-secondary);
    opacity: 0.7;
}

.channel-group-rooms {
    overflow: hidden;
    transition: max-height 0.2s ease-out;
    max-height: 500px;
}

.channel-group.collapsed .channel-group-rooms {
    max-height: 0;
}

.channel-item {
    display: flex;
    align-items: center;
    padding: 0.5rem 0.75rem;
    margin: 0.125rem 0;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s;
    gap: 0.5rem;
}

.channel-item:hover {
    background: var(--bg-tertiary);
}

.channel-item.active {
    background: var(--accent);
    color: white;
}

.channel-item .channel-icon {
    font-size: 1rem;
    opacity: 0.7;
}

.channel-item.active .channel-icon {
    opacity: 1;
}

.channel-item .channel-name {
    flex: 1;
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.channel-item .unread-badge {
    background: var(--accent);
    color: white;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.125rem 0.4rem;
    border-radius: 999px;
    min-width: 18px;
    text-align: center;
}

.channel-item.active .unread-badge {
    background: white;
    color: var(--accent);
}

/* Saved Items special section */
.saved-items-section {
    padding: 0.5rem 1rem;
    border-bottom: 1px solid var(--border);
}

.saved-items-item {
    display: flex;
    align-items: center;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s;
    gap: 0.5rem;
    color: var(--text-secondary);
}

.saved-items-item:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.saved-items-item.active {
    background: var(--accent);
    color: white;
}

.saved-items-item svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.saved-items-item .badge {
    margin-left: auto;
    background: var(--tag-bg);
    padding: 0.125rem 0.4rem;
    border-radius: 999px;
    font-size: 0.7rem;
}

.saved-items-item.active .badge {
    background: rgba(255,255,255,0.2);
}

/* Saved Items View */
.saved-items-container {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 1.5rem;
}

.saved-item-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
}

.saved-item-card:hover {
    border-color: var(--accent);
}

.saved-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.saved-item-channel {
    font-size: 0.75rem;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.saved-item-time {
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.saved-item-author {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

.saved-item-content {
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.saved-item-remove {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    opacity: 0;
    transition: opacity 0.2s;
}

.saved-item-card {
    position: relative;
}

.saved-item-card:hover .saved-item-remove {
    opacity: 1;
}

.saved-item-remove:hover {
    background: var(--bg-tertiary);
    color: var(--error);
}

.empty-saved-items {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
}

.empty-saved-items svg {
    width: 48px;
    height: 48px;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.sidebar-user {
    padding: 0.75rem 1rem;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sidebar-user .user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.8rem;
}

.sidebar-user .user-details {
    flex: 1;
    min-width: 0;
}

.sidebar-user .user-name {
    font-size: 0.85rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user .user-status {
    font-size: 0.7rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.sidebar-user .status-indicator {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #666;
}

.sidebar-user .status-indicator.online {
    background: var(--success);
}

.sidebar-user .logout-btn {
    padding: 0.25rem 0.5rem;
    font-size: 0.7rem;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

/* Auth Modal */
.auth-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.auth-card {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    max-width: 400px;
    width: 90%;
}

.auth-card h2 {
    margin-bottom: 0.5rem;
}

.auth-card .subtitle {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.auth-card .tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.auth-card .tab {
    padding: 0.75rem 0;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all 0.2s;
}

.auth-card .tab:hover {
    color: var(--text-primary);
}

.auth-card .tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.auth-card .form-group {
    margin-bottom: 1rem;
}

.auth-card label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.auth-card input {
    width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    font-size: 1rem;
}

.auth-card input:focus {
    outline: none;
    border-color: var(--accent);
}

.auth-card button {
    width: 100%;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    margin-top: 0.5rem;
}

.auth-card button:hover {
    background: var(--accent-hover);
}

.auth-card button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.auth-card .error-message {
    color: var(--error);
    font-size: 0.85rem;
    margin-top: 1rem;
    text-align: center;
}

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

.header h1 {
    font-size: 1.25rem;
    font-weight: 600;
}

.room-selector {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.room-selector select {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.8rem;
}

.logout-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 0.4rem 0.75rem;
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
}

.logout-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.connection-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #666;
}

.status-dot.connected {
    background: var(--success);
}

/* Tag Filter Bar */
.tag-filter-bar {
    background: var(--bg-secondary);
    padding: 0.75rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    align-items: center;
}

.tag-filter-bar span {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.tag-pill {
    background: var(--tag-bg);
    color: var(--text-secondary);
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.tag-pill:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.tag-pill.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.clear-filters {
    margin-left: auto;
    font-size: 0.8rem;
    color: var(--accent);
    cursor: pointer;
    text-decoration: underline;
}

/* Messages Area */
.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* New Messages Bar (Slack-style) */
.new-messages-bar {
    display: none;
    position: absolute;
    bottom: 120px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
    z-index: 100;
    align-items: center;
    gap: 8px;
    transition: transform 0.2s, opacity 0.2s;
}

.new-messages-bar:hover {
    transform: translateX(-50%) scale(1.05);
}

.new-messages-bar.visible {
    display: flex;
}

/* Slack-style messages - all left aligned with avatar */
.message {
    display: flex;
    gap: 12px;
    padding: 8px 20px;
    animation: fadeIn 0.2s ease-out;
}

.message:hover {
    background: var(--bg-tertiary);
}

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 6px;
    background: var(--accent);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
    flex-shrink: 0;
    text-transform: uppercase;
}

.message-body {
    flex: 1;
    min-width: 0;
}

/* Compact mode - consecutive messages from same user */
.message.compact {
    padding-top: 1px;
    padding-bottom: 1px;
}

.message.compact .message-avatar {
    visibility: hidden;
    width: 36px;
}

.message.compact .message-header {
    display: none;
}

/* AI messages */
.message.ai .message-avatar {
    background: linear-gradient(135deg, var(--accent) 0%, #c2185b 100%);
}

/* Thread replies - indented */
.message.reply {
    margin-left: 48px;
    padding-left: 12px;
    border-left: 2px solid var(--border);
}

.message.reply .message-avatar {
    width: 24px;
    height: 24px;
    font-size: 0.7rem;
}

.message-header {
    display: flex;
    gap: 0.5rem;
    align-items: baseline;
    margin-bottom: 2px;
}

.message-author {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.message-time {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Link Preview Card */
.link-preview {
    margin-top: 0.5rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    max-width: 400px;
    cursor: pointer;
    transition: border-color 0.2s;
}

.link-preview:hover {
    border-color: var(--accent);
}

.link-preview-image {
    width: 100%;
    height: 150px;
    object-fit: cover;
    background: var(--bg-primary);
}

.link-preview-content {
    padding: 0.75rem;
}

.link-preview-site {
    font-size: 0.7rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    margin-bottom: 0.25rem;
}

.link-preview-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.link-preview-description {
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.link-preview.loading {
    padding: 1rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.link-previews {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.message-link {
    color: var(--accent);
    text-decoration: none;
    word-break: break-all;
}

.message-link:hover {
    text-decoration: underline;
}

.message-image {
    max-width: 100%;
    max-height: 400px;
    border-radius: 8px;
    margin-top: 0.5rem;
    cursor: pointer;
    transition: opacity 0.2s;
}

.message-image:hover {
    opacity: 0.9;
}

.message-image-container {
    margin-top: 0.5rem;
}

/* Multi-image grid */
.message-images-grid {
    display: grid;
    gap: 4px;
    margin-top: 0.5rem;
    max-width: 400px;
    border-radius: 8px;
    overflow: hidden;
}

.message-images-grid.images-1 {
    grid-template-columns: 1fr;
}

.message-images-grid.images-2 {
    grid-template-columns: 1fr 1fr;
}

.message-images-grid.images-3 {
    grid-template-columns: 2fr 1fr;
    grid-template-rows: 1fr 1fr;
}

.message-images-grid.images-3 .grid-image:first-child {
    grid-row: span 2;
}

.message-images-grid.images-4 {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
}

.grid-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    cursor: pointer;
    transition: opacity 0.2s;
    min-height: 80px;
    max-height: 200px;
}

.grid-image:hover {
    opacity: 0.9;
}

.grid-image-more {
    position: relative;
}

.grid-image-more::after {
    content: attr(data-more);
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    font-weight: 600;
}

/* Interactive message buttons (Robin AI) */
.message-buttons {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.75rem;
    flex-wrap: wrap;
}

.message-button {
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid var(--border);
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.message-button:hover {
    background: var(--bg-secondary);
    border-color: var(--accent);
}

.message-button.primary {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.message-button.primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
}

.message-button.danger {
    background: transparent;
    border-color: var(--error);
    color: var(--error);
}

.message-button.danger:hover {
    background: var(--error);
    color: white;
}

.message-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.message-button.clicked {
    opacity: 0.6;
    pointer-events: none;
}

/* Robin AI special styling */
.message.ai .message-author {
    color: var(--accent);
}

.message.ai .message-content {
    color: var(--text-primary);
}

.message.ai .message-avatar {
    background: linear-gradient(135deg, #4a90d9 0%, #357abd 100%);
}

/* YouTube embed */
.youtube-embed {
    margin-top: 0.5rem;
    max-width: 400px;
    border-radius: 8px;
    overflow: hidden;
}

.youtube-embed iframe {
    width: 100%;
    aspect-ratio: 16 / 9;
    border: none;
}

/* Attachment previews */
.attachment-previews {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
}

.attachment-previews:empty {
    display: none;
}

.attachment-preview {
    position: relative;
    width: 60px;
    height: 60px;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.attachment-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.attachment-preview .remove-btn {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 18px;
    height: 18px;
    background: rgba(0, 0, 0, 0.7);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 11px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.attachment-preview .remove-btn:hover {
    background: var(--error);
}

.composer-row {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.add-attachment-btn {
    width: 36px;
    height: 36px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    flex-shrink: 0;
}

.add-attachment-btn:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
    border-color: var(--accent);
}

.attachment-menu {
    position: absolute;
    bottom: 100%;
    left: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.5rem 0;
    margin-bottom: 0.5rem;
    min-width: 160px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    display: none;
    z-index: 10;
}

.attachment-menu.show {
    display: block;
}

.attachment-menu-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.75rem;
    cursor: pointer;
    transition: background 0.15s;
    font-size: 0.85rem;
}

.attachment-menu-item:hover {
    background: var(--bg-tertiary);
}

.composer-input-wrapper {
    flex: 1;
    min-width: 0;
    display: flex;
}

/* Drag overlay */
.drag-overlay {
    position: fixed;
    inset: 0;
    background: rgba(233, 69, 96, 0.1);
    border: 3px dashed var(--accent);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    pointer-events: none;
}

.drag-overlay.show {
    display: flex;
}

.drag-overlay-content {
    background: var(--bg-secondary);
    padding: 2rem 3rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.drag-overlay-content svg {
    width: 48px;
    height: 48px;
    color: var(--accent);
    margin-bottom: 1rem;
}

.drag-overlay-content p {
    font-size: 1.1rem;
    color: var(--text-primary);
}

.message-time {
    color: var(--text-secondary);
}

.message-content {
    line-height: 1.5;
    word-wrap: break-word;
}

.message-tags {
    margin-top: 0.5rem;
    display: flex;
    gap: 0.25rem;
    flex-wrap: wrap;
}

.message-tag {
    font-size: 0.75rem;
    color: var(--accent);
}

/* Message status indicators */
.message-status {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.7rem;
    margin-left: 0.5rem;
}

.message-status.sending {
    color: var(--text-secondary);
}

.message-status.sent {
    color: var(--success);
}

.message-status.failed {
    color: var(--error);
    cursor: pointer;
}

.message-status.failed:hover {
    text-decoration: underline;
}

.status-icon {
    width: 12px;
    height: 12px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.status-icon.spinning {
    animation: spin 1s linear infinite;
}

.message {
    transition: opacity 0.15s ease;
}

.message.pending {
    opacity: 0.7;
}

.message.failed {
    border-color: var(--error);
    opacity: 0.8;
}

.message-error {
    color: var(--error);
    font-size: 0.75rem;
    cursor: pointer;
    margin-top: 0.25rem;
}

.message-error:hover {
    text-decoration: underline;
}

/* Smooth status transitions */
.message-status {
    transition: opacity 0.2s ease;
}

/* Date Separator */
.date-separator {
    text-align: center;
    padding: 1rem 0;
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.date-separator::before,
.date-separator::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}

/* Empty State */
.empty-state {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    gap: 1rem;
}

.empty-state svg {
    width: 64px;
    height: 64px;
    opacity: 0.5;
}

/* Composer */
.composer {
    background: var(--bg-secondary);
    padding: 0.75rem 1rem;
    border-top: 1px solid var(--border);
}

.composer-input {
    flex: 1;
    width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.5rem 0.75rem;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: inherit;
    resize: none;
    min-height: 36px;
    max-height: 100px;
    line-height: 1.4;
}

.composer-input:focus {
    outline: none;
    border-color: var(--accent);
}

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

.send-button {
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 6px;
    padding: 0 1rem;
    height: 36px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    flex-shrink: 0;
}

.send-button:hover {
    background: var(--accent-hover);
}

.send-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.quick-tags {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.quick-tag {
    font-size: 0.8rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: all 0.2s;
}

.quick-tag:hover {
    background: var(--tag-bg);
    color: var(--text-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--bg-tertiary);
}

/* Message Actions Bar */
.message-actions {
    display: none;
    position: absolute;
    top: -12px;
    right: 8px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 2px;
    gap: 2px;
    z-index: 10;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.message:hover > .message-actions {
    display: flex;
}

/* Hide parent message-actions when hovering over inline replies */
.message:has(.inline-replies:hover) > .message-actions {
    display: none;
}

.action-btn {
    background: transparent;
    border: none;
    padding: 6px 8px;
    border-radius: 4px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.action-btn svg {
    display: block;
}

.action-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.action-btn.active {
    color: var(--accent);
}

.action-btn.active svg {
    fill: var(--accent);
}

/* Reactions Display */
.message-reactions {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: 6px;
}

.reaction-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 2px 8px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.15s;
}

.reaction-chip:hover {
    border-color: var(--accent);
}

.reaction-chip.user-reacted {
    background: rgba(233, 69, 96, 0.15);
    border-color: var(--accent);
}

.reaction-chip .emoji {
    font-size: 0.9rem;
}

.reaction-chip .count {
    color: var(--text-secondary);
    font-size: 0.75rem;
}

/* Emoji Picker */
.emoji-picker {
    position: absolute;
    bottom: 100%;
    right: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px;
    display: none;
    grid-template-columns: repeat(6, 1fr);
    gap: 4px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    z-index: 20;
}

.emoji-picker.show {
    display: grid;
}

.emoji-option {
    background: transparent;
    border: none;
    padding: 6px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1.2rem;
    transition: background 0.15s;
}

.emoji-option:hover {
    background: var(--bg-tertiary);
}

/* Thread/Reply Indicator */
.thread-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 6px;
    padding: 4px 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    font-size: 0.8rem;
    color: var(--accent);
    cursor: pointer;
    width: fit-content;
}

.thread-indicator:hover {
    background: var(--bg-primary);
}

/* Inline replies container */
.inline-replies {
    margin-top: 8px;
    padding-left: 12px;
    border-left: 2px solid var(--border);
}

.inline-replies.collapsed {
    display: none;
}

.inline-replies .message {
    padding: 4px 8px;
    position: relative;
}

/* Thread replies get their own hover behavior - show actions on hover */
.inline-replies .message:hover > .message-actions {
    display: flex;
}

.inline-replies .message-avatar {
    width: 24px;
    height: 24px;
    font-size: 0.7rem;
}

/* Reply bar in composer */
.reply-bar {
    display: none;
    padding: 8px 12px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
    font-size: 0.85rem;
    color: var(--text-secondary);
    justify-content: space-between;
    align-items: center;
}

.reply-bar strong {
    color: var(--text-primary);
}

.reply-bar button {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0 4px;
}

.reply-bar button:hover {
    color: var(--text-primary);
}

/* Pinned indicator */
.pinned-indicator {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.7rem;
    color: var(--accent);
    margin-left: 8px;
}

/* Edited indicator */
.edited-indicator {
    font-size: 0.7rem;
    color: var(--text-secondary);
    margin-left: 4px;
}

/* Edit input */
.edit-input {
    width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--accent);
    border-radius: 4px;
    padding: 6px 8px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    margin-top: 4px;
}

.edit-actions {
    display: flex;
    gap: 8px;
    margin-top: 6px;
}

.edit-actions button {
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.8rem;
    cursor: pointer;
}

.edit-save {
    background: var(--accent);
    color: white;
    border: none;
}

.edit-cancel {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
}


/* Typing Indicator */
.typing-indicator {
    padding: 0.5rem 1.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-style: italic;
    min-height: 24px;
}

.typing-indicator:empty {
    display: none;
}

/* AI Thinking Indicator */
.ai-thinking-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    margin: 8px 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    border-radius: 8px;
    width: fit-content;
}

.thinking-dot {
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    animation: thinking-pulse 1.4s ease-in-out infinite;
}

.thinking-dot:nth-child(1) { animation-delay: 0s; }
.thinking-dot:nth-child(2) { animation-delay: 0.2s; }
.thinking-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes thinking-pulse {
    0%, 60%, 100% { transform: scale(1); opacity: 0.4; }
    30% { transform: scale(1.2); opacity: 1; }
}

.thinking-text {
    margin-left: 4px;
    font-style: italic;
}

/* Thread Input (Slack-style) */
.thread-input-wrapper {
    display: flex;
    gap: 8px;
    margin-top: 8px;
    padding: 6px;
    background: var(--bg-primary);
    border-radius: 6px;
    border: 1px solid var(--border);
}

.thread-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 0.85rem;
    outline: none;
    padding: 4px 8px;
}

.thread-input::placeholder {
    color: var(--text-secondary);
}

.thread-send-btn {
    background: var(--accent);
    border: none;
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.thread-send-btn:hover {
    opacity: 1;
}

/* Hide reply action on thread replies (single level only like Slack) */
.inline-replies .message .action-btn[title="Reply"] {
    display: none;
}

/* Search Bar */
.search-bar {
    display: none;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    gap: 8px;
    align-items: center;
}

.search-bar.show {
    display: flex;
}

.search-bar input {
    flex: 1;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 12px;
    color: var(--text-primary);
}

.search-bar button {
    background: var(--accent);
    border: none;
    color: white;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
}

/* Pinned Messages Bar */
.pinned-bar {
    display: none;
    padding: 0.5rem 1rem;
    background: rgba(233, 69, 96, 0.1);
    border-bottom: 1px solid var(--accent);
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--accent);
    align-items: center;
    gap: 8px;
}

.pinned-bar.show {
    display: flex;
}

.pinned-bar:hover {
    background: rgba(233, 69, 96, 0.15);
}

/* Message position for absolute elements */
.message {
    position: relative;
}

/* Bookmarked indicator */
.action-btn.bookmarked {
    color: #fbbf24;
}