/* ============================================
   Sidebar - Icon Rail + Expandable Panel
   Claude.ai inspired collapsible sidebar
   ============================================ */

.sidebar {
    display: flex;
    flex-direction: column;
    height: 100vh;
    background: var(--color-bg);
    transition: width var(--transition-normal);
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    overflow: visible !important;
    width: 60px;
    /* Allow header to overflow when collapsed */
}

.sidebar.expanded {
    width: 340px;
}

/* Logo header at top */
.sidebar-header {
    position: relative;
    height: 48px;
    display: flex;
    align-items: center;
    padding: 8px 16px;
    background: var(--color-bg);
    z-index: 10;
    gap: 16px;
    overflow: visible;
    white-space: nowrap;
    flex-shrink: 0;
}

/* Logo stays visible regardless of sidebar state */

.sidebar-body {
    display: flex;
    flex: 1;
    overflow: hidden;
    position: relative;
}

.icon-rail {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 60px;
    padding: 16px 0;
    gap: 8px;
    border-right: 1px solid var(--color-border-light);
    background: var(--color-bg);
    z-index: 10;
    flex-shrink: 0;
}

.icon-btn {
    width: 40px;
    height: 40px;
    min-width: 40px;
    /* Prevent squishing */
    min-height: 40px;
    border-radius: 50%;
    /* Pure circle */
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    margin: 2px 0;
    flex-shrink: 0;
    /* Prevent flex shrinking */
}

.icon-btn:hover {
    background: var(--sidebar-icon-hover);
    color: var(--color-text);
}

.icon-btn.active {
    background: var(--sidebar-icon-active);
    color: var(--color-text);
}

.icon-btn svg {
    width: 20px;
    height: 20px;
}

.icon-emoji {
    font-size: 18px;
}

/* Sidebar Lucide icons (larger for navigation) */
.sidebar-icon {
    width: 16px !important;
    height: 16px !important;
    stroke: currentColor !important;
}

/* Panel title icons */
.panel-title-icon {
    width: 14px !important;
    height: 14px !important;
    stroke: currentColor !important;
    vertical-align: middle;
    margin-right: 6px;
}

.provider-icon {
    width: 20px;
    height: 20px;
    object-fit: contain;
}

.panel-icon {
    width: 16px;
    height: 16px;
    object-fit: contain;
    vertical-align: middle;
    margin-right: 4px;
}

/* Logo at top of sidebar - Perplexity Style */
.logo-icon-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: all 0.2s;
    flex-shrink: 0;
}

.logo-icon-link:hover {
    background: var(--color-surface-hover);
    color: var(--color-text);
}

.logo-icon-mono {
    width: 24px;
    height: 24px;
    color: inherit;
}

.logo-text-center {
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    color: var(--color-text);
    white-space: nowrap;
    letter-spacing: 0.5px;
}

.logo-thin {
    font-weight: 300;
}

.logo-bold {
    font-weight: 700;
    color: var(--color-accent);
}

/* Legacy logo styles for compatibility */
.logo-container {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-text {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--color-text);
    white-space: nowrap;
}

/* Logo text - always visible */
.logo-labs {
    font-weight: 700;
    color: #f8d899;
}

.icon-divider {
    width: 24px;
    height: 1px;
    background: var(--color-border);
    margin: var(--spacing-sm) 0;
}

.icon-spacer {
    flex: 1;
}

/* Account Button */
.account-btn {
    margin-top: auto;
    margin-bottom: var(--spacing-sm);
}

.account-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    /* Force circle */
    background: var(--color-accent);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: 600;
}

/* Auto-backup Button */
#autoBackupBtn {
    position: relative;
}

#autoBackupBtn.active::after {
    content: '';
    position: absolute;
    bottom: 4px;
    right: 4px;
    width: 8px;
    height: 8px;
    background: #10b981;
    border-radius: 50%;
    border: 2px solid var(--sidebar-bg);
}

/* ============================================
   Expandable Panel (slides in/out)
   ============================================ */

.sidebar-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--color-bg);
    overflow: hidden;
    width: 0;
    opacity: 0;
    transition: width var(--transition-normal), opacity var(--transition-fast);
}

.sidebar.expanded .sidebar-panel {
    width: 280px;
    opacity: 1;
}

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

.panel-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.panel-title-icon {
    width: 18px;
    height: 18px;
    color: var(--color-text-secondary);
}

.panel-title.clickable {
    cursor: pointer;
    transition: color var(--transition-fast);
    user-select: none;
}

.panel-title.clickable:hover {
    color: var(--color-accent);
}

/* Panel collapse arrow icon */
.panel-collapse-icon {
    width: 16px !important;
    height: 16px !important;
    margin-left: auto;
    transition: transform var(--transition-fast);
    flex-shrink: 0;
}

.panel-header.collapsed .panel-collapse-icon {
    transform: rotate(-90deg);
}

/* Panel Header Actions (buttons) */
.panel-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.panel-action-btn {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    text-decoration: none;
}

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

.panel-action-btn i {
    width: 16px;
    height: 16px;
}

/* ============================================
   Panel Sections (Threads, Projects)
   ============================================ */

.panel-section {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border-light);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.section-header.clickable {
    cursor: pointer;
    padding: var(--spacing-xs) var(--spacing-sm);
    margin: 0 calc(-1 * var(--spacing-sm));
    margin-bottom: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
    text-decoration: none;
}

.section-header.clickable:hover {
    background: var(--color-surface-hover);
}

.section-arrow {
    font-size: 12px;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.section-header.clickable:hover .section-arrow {
    opacity: 1;
}

/* Section header with hover actions */
.section-header-with-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    margin: 0 calc(-1 * var(--spacing-sm));
    margin-bottom: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.section-header-with-actions:hover {
    background: var(--color-surface-hover);
}

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

.section-actions {
    display: flex;
    align-items: center;
    gap: 4px;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.section-header-with-actions:hover .section-actions {
    opacity: 1;
}

.section-action-btn {
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-secondary);
    background: transparent;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.section-action-btn:hover {
    background: var(--color-accent-light);
    color: var(--color-accent);
}

/* Header add button (in panel header) */
.header-add-btn {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--color-text-secondary);
    background: transparent;
    transition: all var(--transition-fast);
}

.header-add-btn:hover {
    background: var(--color-surface-hover);
    color: var(--color-text);
}

/* Section add button (under section header) */
.section-add-btn {
    width: 100%;
    padding: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--color-text-muted);
    background: transparent;
    transition: all var(--transition-fast);
}

.section-add-btn:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: var(--color-accent-light);
}

/* Panel header layout */
.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border-light);
}

/* List container */

.list-container {
    display: flex;
    flex-direction: column;
    gap: 1px;
    overflow-y: auto;
    max-height: 400px;
}

/* Menu Panels */
.menu-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

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

.list-empty {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    padding: var(--spacing-sm) var(--spacing-md);
    font-style: italic;
}

/* List Item */
.list-item {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text);
    cursor: pointer;
    transition: background var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.list-item:hover {
    background: var(--color-surface-hover);
}

.list-item.active {
    background: var(--color-accent-light);
    color: var(--color-accent);
}

.list-item-icon {
    font-size: 14px;
    opacity: 0.7;
}

/* Sidebar list items (for dynamic thread/project lists) */
.sidebar-list-item {
    display: flex !important;
    flex-direction: row;
    align-items: center;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: #1A1A1A !important;
    background: transparent !important;
    text-decoration: none;
    overflow: hidden;
    transition: background var(--transition-fast);
    gap: 8px;
    visibility: visible !important;
    opacity: 1 !important;
    height: 28px;
    white-space: nowrap;
}

.sidebar-list-item:link,
.sidebar-list-item:visited,
.sidebar-list-item:active {
    color: #1A1A1A !important;
}

.sidebar-list-item:hover {
    background: var(--color-surface-hover);
    color: #1A1A1A !important;
}

.sidebar-list-item .item-title {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-weight: 300;
    font-size: 13px !important;
    font-family: 'Inter', sans-serif !important;
    color: #1A1A1A !important;
    visibility: visible !important;
    opacity: 1 !important;
}

.sidebar-list-item .item-meta {
    font-size: 11px !important;
    font-family: 'Inter', sans-serif !important;
    color: #999999 !important;
    white-space: nowrap;
    flex-shrink: 0;
    visibility: visible !important;
    opacity: 1 !important;
}

.empty-list {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    padding: var(--spacing-md);
    font-style: italic;
    text-align: center;
    min-height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Account list items in settings panel */
.account-list-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.account-list-item:hover {
    background: var(--color-surface-hover);
}

.account-list-item.selected {
    background: var(--color-accent-light);
}

.account-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.account-status-dot.active {
    background: #10b981;
}

.account-status-dot.inactive {
    background: #6b7280;
}

.account-name-text {
    flex: 1;
    font-size: var(--font-size-sm);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.account-checkmark {
    color: var(--color-accent);
    font-weight: 600;
}

/* ============================================
   Panel Footer (Account Info)
   ============================================ */

.panel-footer {
    margin-top: auto;
    padding: var(--spacing-md);
    border-top: 1px solid var(--color-border-light);
}

.account-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.account-info:hover {
    background: var(--color-surface-hover);
}

.account-avatar-lg {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.settings-icon {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.account-details {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.account-name {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
}

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

/* ============================================
   Sidebar Thread Item Wrapper + 3-dot Menu
   ============================================ */

.sidebar-list-item-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.sidebar-list-item-wrapper .sidebar-link {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Three-dot menu button */
.sidebar-thread-menu-btn {
    opacity: 0;
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    padding: 2px 6px;
    font-size: 16px;
    line-height: 1;
    border-radius: 4px;
    transition: opacity 0.15s, background 0.15s;
    flex-shrink: 0;
    color: var(--color-text-secondary);
}

.sidebar-list-item-wrapper:hover .sidebar-thread-menu-btn {
    opacity: 1;
}

.sidebar-thread-menu-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Dropdown menu */
.sidebar-thread-menu {
    position: absolute;
    right: 0;
    top: 100%;
    background: rgba(20, 20, 30, 0.97);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 8px;
    padding: 4px 0;
    min-width: 160px;
    z-index: 9999;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.sidebar-thread-menu-item {
    padding: 8px 14px;
    cursor: pointer;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.85);
    transition: background 0.15s;
    position: relative;
    white-space: nowrap;
}

.sidebar-thread-menu-item:hover {
    background: rgba(255, 255, 255, 0.08);
}

/* Submenu (flyout) */
.sidebar-thread-menu-item.has-submenu::after {
    content: ' ›';
    float: right;
    margin-left: 8px;
}

.sidebar-thread-submenu {
    display: none;
    position: absolute;
    left: 100%;
    top: 0;
    background: rgba(20, 20, 30, 0.97);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 8px;
    padding: 4px 0;
    min-width: 160px;
    z-index: 10000;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.sidebar-thread-menu-item.has-submenu:hover .sidebar-thread-submenu {
    display: block;
}