:root {
    --bg-main: #0f172a;
    --bg-surface: #1e293b;
    --bg-surface-elevated: #334155;
    --bg-input: #0f172a;
    --text-main: #f8fafc;
    --text-muted: #cbd5e1;
    --text-dim: #94a3b8;
    --border-color: #334155;
    --border-focus: #38bdf8;
    --primary: #38bdf8;
    --primary-hover: #0ea5e9;
    --primary-text: #0f172a;
    --danger: #f43f5e;
    --danger-hover: #e11d48;
    --success: #10b981;
    --warning: #f59e0b;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
    --font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

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

html, body {
    height: 100vh;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.5;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.15s ease;
}

a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* Header & Nav */
.app-header {
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    height: 60px;
    box-sizing: border-box;
    z-index: 50;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-main);
    text-decoration: none;
}

.brand:hover,
.brand:focus {
    text-decoration: none;
    color: var(--text-main);
}

.brand-icon {
    font-size: 1.5rem;
}

.user-menu-wrapper {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.user-menu-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.65rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-main);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.15s ease, border-color 0.15s ease;
}

.user-menu-btn:hover,
.user-menu-btn:focus-visible {
    background: var(--bg-hover);
    border-color: var(--primary);
    outline: none;
}

.user-avatar-icon {
    display: inline-flex;
    align-items: center;
    color: var(--primary);
}

.user-menu-name {
    font-weight: 500;
    color: var(--text-main);
    max-width: 140px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-menu-chevron {
    color: var(--text-dim);
    transition: transform 0.2s ease;
}

.user-menu-btn[aria-expanded="true"] .user-menu-chevron {
    transform: rotate(180deg);
}

.user-menu-dropdown {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 210px;
    background-color: #1e293b;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5), 0 4px 10px rgba(0, 0, 0, 0.3);
    z-index: 10005;
    padding: 0.4rem 0;
}

.user-menu-header {
    padding: 0.5rem 0.85rem;
}

.user-menu-info-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-main);
}

.user-menu-info-email {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.15rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-menu-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 0.35rem 0;
}

.user-menu-body {
    padding: 0.2rem 0.4rem;
}

.user-menu-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    width: 100%;
    padding: 0.45rem 0.75rem;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-main);
    cursor: pointer;
    text-align: left;
    transition: background-color 0.12s ease;
}

.user-menu-logout-btn {
    color: var(--danger, #ef4444);
}

.user-menu-logout-btn:hover {
    background-color: rgba(239, 68, 68, 0.12);
}

/* App Omnibar */
.app-omnibar {
    position: relative;
    flex: 1;
    max-width: 580px;
    margin: 0 1.5rem;
}

.omnibar-search-box {
    position: relative;
    display: flex;
    align-items: center;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.35rem 0.75rem;
    transition: all 0.15s ease;
}

.omnibar-search-box:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
}

.omnibar-icon {
    font-size: 1rem;
    margin-right: 0.5rem;
    color: var(--text-dim);
    flex-shrink: 0;
    user-select: none;
}

.omnibar-input {
    width: 100%;
    background: none;
    border: none;
    outline: none;
    color: var(--text-main);
    font-size: 0.875rem;
    font-family: inherit;
}

.omnibar-input::placeholder {
    color: var(--text-dim);
}

.omnibar-clear-btn {
    background: none;
    border: none;
    color: var(--text-dim);
    font-size: 0.85rem;
    cursor: pointer;
    padding: 0.15rem 0.35rem;
    border-radius: var(--radius-sm);
    margin-left: 0.25rem;
    line-height: 1;
    transition: all 0.1s ease;
}

.omnibar-clear-btn:hover {
    color: var(--text-main);
    background-color: rgba(255, 255, 255, 0.1);
}

.omnibar-spinner {
    width: 14px;
    height: 14px;
    border: 2px solid rgba(56, 189, 248, 0.2);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    margin-left: 0.4rem;
    flex-shrink: 0;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.15s ease;
    text-decoration: none;
}

.btn:hover,
.btn:focus {
    text-decoration: none;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--primary-text);
}

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

.btn-secondary {
    background-color: var(--bg-surface-elevated);
    color: var(--text-main);
    border-color: var(--border-color);
}

.btn-secondary:hover {
    background-color: #475569;
}

.btn-danger {
    background-color: rgba(244, 63, 94, 0.15);
    color: var(--danger);
    border-color: rgba(244, 63, 94, 0.3);
}

.btn-danger:hover {
    background-color: var(--danger);
    color: #fff;
}

.btn-outline-danger,
.btn-danger-outline {
    background-color: rgba(244, 63, 94, 0.1);
    color: var(--danger);
    border-color: rgba(244, 63, 94, 0.4);
}

.btn-outline-danger:hover,
.btn-outline-danger:focus,
.btn-danger-outline:hover,
.btn-danger-outline:focus {
    background-color: var(--danger);
    color: #fff;
    border-color: var(--danger);
}

.btn-outline-success,
.btn-success-outline {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border-color: rgba(16, 185, 129, 0.4);
}

.btn-outline-success:hover,
.btn-outline-success:focus,
.btn-success-outline:hover,
.btn-success-outline:focus {
    background-color: var(--success);
    color: #0f172a;
    border-color: var(--success);
}

.btn-sm {
    padding: 0.25rem 0.6rem;
    font-size: 0.75rem;
}

/* Layout container - 3 Columns Fixed */
.app-container {
    display: grid;
    grid-template-columns: 290px 1fr 290px;
    flex: 1;
    height: calc(100vh - 60px);
    overflow: hidden;
    box-sizing: border-box;
}

/* Sidebar (Left & Right) */
.sidebar {
    background-color: var(--bg-surface);
    padding: 0;
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
    box-sizing: border-box;
}

.sidebar-sticky-header {
    flex-shrink: 0;
    background-color: var(--bg-surface);
    padding: 0.75rem 0.5rem 0.4rem 0.5rem;
    box-sizing: border-box;
    z-index: 10;
}

.sidebar-sticky-header .sidebar-section-title {
    margin-bottom: 0;
    padding: 0 0.15rem;
}

.sidebar-sticky-header .tag-filter-controls {
    margin-top: 0.6rem;
    margin-bottom: 0.25rem;
}

.sidebar-content-body {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 0.25rem 0.5rem 1rem 0.5rem;
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) transparent;
}

.sidebar-left {
    border-right: 1px solid var(--border-color);
}

.sidebar-right {
    border-left: 1px solid var(--border-color);
}

.sidebar-content-body::-webkit-scrollbar,
.sidebar::-webkit-scrollbar,
.main-content::-webkit-scrollbar {
    width: 5px;
}

.sidebar-content-body::-webkit-scrollbar-track,
.sidebar::-webkit-scrollbar-track,
.main-content::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar-content-body::-webkit-scrollbar-thumb,
.sidebar::-webkit-scrollbar-thumb,
.main-content::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
    border-radius: 3px;
}

.sidebar-section-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #cbd5e1;
    margin-bottom: 0.5rem;
    padding: 0 0.25rem;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.45rem;
    border-radius: var(--radius-sm);
    color: #e2e8f0;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.15s ease;
    border-left: 3px solid transparent;
}

.sidebar-link:hover {
    background-color: var(--bg-surface-elevated);
    color: #ffffff;
    text-decoration: none;
}

.sidebar-link.active-ancestor {
    background-color: rgba(56, 189, 248, 0.08);
    color: var(--primary);
    font-weight: 500;
    border-left-color: rgba(56, 189, 248, 0.5);
}

.sidebar-link.active {
    background-color: rgba(56, 189, 248, 0.15);
    color: var(--primary);
    font-weight: 700;
    border-left-color: var(--primary);
}

.folder-tree {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.folder-tree-node {
    display: flex;
    flex-direction: column;
    width: 100%;
}

.folder-tree-node.folded > .folder-tree-children {
    display: none !important;
}

.folder-tree-children {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    margin-left: 0.65rem;
    padding-left: 0.25rem;
    border-left: 1px dashed rgba(148, 163, 184, 0.25);
}

.folder-tree-icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    user-select: none;
}

.folder-tree-row {
    position: relative;
    display: flex;
    align-items: stretch;
    width: 100%;
    min-height: 32px;
    border-radius: var(--radius-sm);
    transition: background-color 0.15s ease;
    border-left: 3px solid transparent;
    box-sizing: border-box;
}

.folder-tree-row:hover {
    background-color: var(--bg-surface-elevated);
}

.folder-tree-row:hover .folder-tree-link {
    color: #ffffff;
    text-decoration: none;
}

.folder-tree-row:hover .folder-dropdown-summary {
    opacity: 1;
    color: #ffffff;
}

.folder-tree-row.active-ancestor {
    background-color: rgba(56, 189, 248, 0.08);
    border-left-color: rgba(56, 189, 248, 0.5);
}

.folder-tree-row.active-ancestor .folder-tree-link {
    color: var(--primary);
    font-weight: 500;
}

.folder-tree-row.active {
    background-color: rgba(56, 189, 248, 0.15);
    border-left-color: var(--primary);
}

.folder-tree-row.active .folder-tree-link {
    color: var(--primary);
    font-weight: 700;
}

.folder-tree-link {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    flex: 1;
    min-width: 0;
    padding: 0.35rem 0.2rem 0.35rem 0.4rem;
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
    color: #e2e8f0;
    font-weight: 500;
    text-decoration: none;
    font-size: 0.85rem;
    border: none;
    background: transparent;
    box-sizing: border-box;
}

.folder-tree-link:hover,
.folder-tree-link:focus {
    text-decoration: none;
}

.folder-dropdown {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    align-self: stretch;
    flex-shrink: 0;
    margin: 0;
    padding: 0;
}

.folder-dropdown-summary {
    list-style: none;
    list-style-type: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    min-width: 30px;
    max-width: 30px;
    flex: 0 0 30px;
    flex-shrink: 0;
    align-self: stretch;
    height: auto;
    padding: 0;
    margin: 0;
    font-size: 1.25rem;
    font-weight: 700;
    color: #cbd5e1;
    background: transparent;
    border: none;
    outline: none;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    opacity: 0.85;
    transition: all 0.15s ease;
    user-select: none;
    line-height: 1;
    box-sizing: border-box;
    text-decoration: none;
    -webkit-appearance: none;
    appearance: none;
}

.folder-dropdown-summary::-webkit-details-marker,
.folder-dropdown-summary::marker {
    display: none;
    content: "";
}

.folder-dropdown-summary:hover {
    color: #ffffff;
    background-color: rgba(255, 255, 255, 0.15);
    opacity: 1;
    text-decoration: none;
}

.folder-dropdown[open] .folder-dropdown-summary,
.folder-dropdown-summary.context-menu-active {
    color: var(--primary);
    background-color: rgba(56, 189, 248, 0.2);
    opacity: 1;
}

.folder-dropdown-menu {
    position: absolute;
    right: 0;
    top: calc(100% + 2px);
    z-index: 1000;
    min-width: 190px;
    width: max-content;
    background-color: #1e293b;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.8), 0 8px 10px -6px rgba(0, 0, 0, 0.8);
    padding: 0.25rem 0;
    display: flex;
    flex-direction: column;
    opacity: 1 !important;
}

.folder-dropdown.dropup .folder-dropdown-menu {
    top: auto;
    bottom: calc(100% + 2px);
    box-shadow: 0 -10px 25px -5px rgba(0, 0, 0, 0.5), 0 -8px 10px -6px rgba(0, 0, 0, 0.5);
}

.folder-dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.5rem 0.85rem;
    font-size: 0.825rem;
    font-weight: 500;
    color: #e2e8f0;
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    transition: all 0.12s ease;
    text-decoration: none;
    white-space: nowrap;
}

.folder-dropdown-item:hover {
    background-color: rgba(56, 189, 248, 0.15);
    color: #ffffff;
}

.folder-dropdown-item.text-danger:hover {
    background-color: rgba(239, 68, 68, 0.15);
    color: var(--danger);
}

.folder-icon-svg {
    flex-shrink: 0;
    transition: transform 0.15s ease;
}

.folder-tree-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
}

.folder-tree-counts {
    margin-left: auto;
    display: inline-flex;
    align-items: center;
    gap: 0.15rem;
    flex-shrink: 0;
}

.folder-count-badge {
    font-size: 0.65rem;
    font-weight: 600;
    color: #cbd5e1;
    background-color: rgba(255, 255, 255, 0.08);
    padding: 0.05rem 0.25rem;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.15);
    display: inline-flex;
    align-items: center;
    gap: 0.1rem;
    line-height: 1.1;
}

.tag-cat-group {
    margin-bottom: 1rem;
    transition: all var(--transition-fast);
}

.tag-cat-group.folded {
    margin-bottom: 0.2rem;
}

.tag-cat-group.folded .tag-cat-header-row,
.tag-cat-group.folded .tag-cat-title {
    margin-bottom: 0;
}

.tag-cat-group.folded .tags-flex {
    display: none;
}

.tag-cat-toggle-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    align-self: stretch;
    height: auto;
    padding: 0 0.15rem 0 0.25rem;
    margin: 0;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    transition: color 0.15s ease;
    flex-shrink: 0;
}

.tag-cat-toggle-btn:hover {
    color: var(--text-main);
}

.tag-cat-chevron {
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center;
}

.tag-cat-group.folded .tag-cat-chevron {
    transform: rotate(-90deg);
}

.tag-cat-header-row,
.tag-cat-title {
    position: relative;
    display: flex;
    align-items: stretch;
    width: 100%;
    min-height: 28px;
    margin-bottom: 0.4rem;
    border-radius: var(--radius-sm);
    transition: background-color 0.15s ease;
    border-left: 3px solid transparent;
    box-sizing: border-box;
    padding: 0;
}

.tag-cat-header-row:hover,
.tag-cat-title:hover {
    background-color: var(--bg-surface-elevated);
}

.tag-cat-header-row:hover .tag-cat-link,
.tag-cat-title:hover .tag-cat-link,
.tag-cat-header-row:hover .tag-cat-name-link,
.tag-cat-title:hover .tag-cat-name-link {
    color: #ffffff;
    text-decoration: none;
}

.tag-cat-header-row:hover .folder-dropdown-summary,
.tag-cat-title:hover .folder-dropdown-summary {
    opacity: 1;
    color: #ffffff;
}

.tag-cat-header-row.active,
.tag-cat-title.active {
    background-color: rgba(56, 189, 248, 0.12);
    border-left-width: 3px;
    border-left-style: solid;
}

.tag-cat-link,
.tag-cat-name-link {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    flex: 1;
    min-width: 0;
    padding: 0.35rem 0.2rem 0.35rem 0.4rem;
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
    color: #e2e8f0;
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    background: transparent;
    box-sizing: border-box;
}

.tag-cat-link:hover,
.tag-cat-link:focus,
.tag-cat-name-link:hover,
.tag-cat-name-link:focus {
    text-decoration: none;
}

.tag-cat-header-row.active .tag-cat-link,
.tag-cat-title.active .tag-cat-link,
.tag-cat-link.active,
.tag-cat-name-link.active {
    color: var(--primary);
    font-weight: 700;
}

.tag-cat-name {
    min-width: 0;
    flex: 0 1 auto;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tag-cat-count-badge {
    font-size: 0.65rem;
    font-weight: 600;
    color: #cbd5e1;
    background-color: rgba(255, 255, 255, 0.08);
    padding: 0.05rem 0.25rem;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.15);
    display: inline-flex;
    align-items: center;
    gap: 0.15rem;
    line-height: 1.1;
    flex-shrink: 0;
}

.tag-cat-header-row:hover .tag-cat-count-badge {
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.25);
}

.tag-cat-header-row.active .tag-cat-count-badge {
    color: var(--primary);
    background-color: rgba(56, 189, 248, 0.15);
    border-color: rgba(56, 189, 248, 0.35);
}

.tag-cat-active-badge {
    margin-left: auto;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 0.1rem 0.35rem;
    border-radius: var(--radius-sm);
    background-color: rgba(56, 189, 248, 0.2);
    color: var(--primary);
    border: 1px solid rgba(56, 189, 248, 0.4);
    display: inline-flex;
    align-items: center;
    line-height: 1;
    flex-shrink: 0;
}

.tag-cat-header-row.active .tag-cat-color-dot,
.tag-cat-title.active .tag-cat-color-dot {
    transform: scale(1.25);
    box-shadow: 0 0 6px rgba(56, 189, 248, 0.6);
}

.tag-cat-color-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.tags-flex {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

/* Tag Filter Controls */
.tag-filter-controls {
    display: flex;
    gap: 0.5rem;
    width: 100%;
    margin-bottom: 1.25rem;
    align-items: center;
}

.tag-mode-toggle {
    display: inline-flex;
    flex: 1;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
    background: var(--bg-surface);
}

.tag-mode-btn {
    flex: 1;
    padding: 0.35rem 0.4rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-align: center;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tag-mode-btn:first-child {
    border-right: 1px solid var(--border-color);
}

.tag-mode-btn.active {
    background: var(--primary-color);
    color: #fff;
}

.tag-mode-btn:hover:not(.active) {
    background: var(--bg-surface-hover);
    color: var(--text-main);
}

.tag-reset-btn {
    flex-shrink: 0;
    padding: 0.35rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
}

.tag-badge.active {
    outline: 2px solid var(--primary-color);
    background-color: rgba(56, 189, 248, 0.25);
    font-weight: 700;
}

/* Alternate Spellings */
.alternate-spellings-list {
    display: flex;
    flex-wrap: wrap;
    align-content: flex-start;
    gap: 0.35rem;
    min-height: 36px;
    max-height: 200px;
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 0.4rem;
    background: var(--bg-surface-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    box-sizing: border-box;
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) transparent;
}

.alternate-spellings-list::-webkit-scrollbar {
    width: 6px;
}

.alternate-spellings-list::-webkit-scrollbar-track {
    background: transparent;
}

.alternate-spellings-list::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
    border-radius: 3px;
}

.alternate-spellings-list::-webkit-scrollbar-thumb:hover {
    background-color: var(--text-muted);
}

.alternate-spelling-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.2rem 0.5rem;
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    color: var(--text-main);
}

.alternate-spelling-chip .chip-remove-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
    color: var(--text-muted);
    padding: 0 0.15rem;
    margin: 0;
    transition: color 0.15s ease;
}

.alternate-spelling-chip .chip-remove-btn:hover {
    color: var(--danger);
}

/* Main Content Area */
.main-content {
    padding: 0.75rem 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    height: 100%;
    overflow-y: auto;
    box-sizing: border-box;
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) transparent;
}

/* Breadcrumbs bar */
.toolbar-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.breadcrumbs {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.875rem;
    flex-wrap: wrap;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--text-muted);
}

.breadcrumb-separator {
    color: var(--text-dim);
}

.breadcrumb-item.active {
    color: var(--text-main);
    font-weight: 600;
}

/* Action buttons toolbar */
.toolbar-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Alerts */
.alert {
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--success);
}

.alert-error {
    background-color: rgba(244, 63, 94, 0.15);
    border: 1px solid rgba(244, 63, 94, 0.3);
    color: var(--danger);
}

/* Grid & Cards */
.section-title {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
    color: var(--text-main);
}

.main-section-title {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 0.55rem;
    padding: 0 0.15rem;
}

.main-section-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.1rem 0.45rem;
    font-size: 0.725rem;
    font-weight: 600;
    border-radius: 9999px;
    background-color: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #cbd5e1;
    line-height: 1.1;
}

.folders-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 0.65rem;
}

.main-section-title-clickable {
    cursor: pointer;
    user-select: none;
    transition: opacity 0.15s ease;
}

.main-section-title-clickable:hover {
    opacity: 0.85;
}

.folders-toggle-icon-wrap {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-dim);
    transition: transform 0.22s ease, color 0.15s ease;
}

.main-section-title-clickable:hover .folders-toggle-icon-wrap {
    color: var(--primary);
}

.folders-toggle-icon-wrap.collapsed {
    transform: rotate(-90deg);
}

.folders-grid.collapsed {
    display: none !important;
}

.folder-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.75rem 0.85rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    transition: transform 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
    text-decoration: none;
    color: var(--text-main);
}

.folder-card:hover {
    transform: translateY(-1px);
    border-color: var(--primary);
    background-color: rgba(56, 189, 248, 0.06);
    text-decoration: none;
}

.folder-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.folder-icon {
    font-size: 1.35rem;
}

.folder-name {
    font-weight: 600;
    font-size: 0.95rem;
    color: #f8fafc;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.folder-meta {
    font-size: 0.775rem;
    font-weight: 500;
    color: #cbd5e1;
}

/* Files / Bookmarks List */
.files-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 0.65rem;
    position: relative;
}

.file-card {
    position: relative;
    z-index: 1;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.75rem 0.85rem;
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    box-shadow: var(--shadow);
    transition: border-color 0.15s ease, transform 0.12s ease;
    cursor: pointer;
}

.file-card:hover {
    border-color: var(--primary);
    transform: translateY(-1px);
    z-index: 2;
}

.file-card:has(details.folder-dropdown[open]),
.file-card.has-open-dropdown {
    z-index: 9999 !important;
    transform: none !important;
}

.file-card details.folder-dropdown {
    position: relative;
    cursor: default;
    z-index: 10;
}

.file-card details.folder-dropdown[open] {
    z-index: 10000 !important;
}

.file-card .folder-dropdown-summary {
    position: relative;
    z-index: 10;
    width: 30px;
    min-width: 30px;
    max-width: 30px;
    height: 30px;
    flex: 0 0 30px;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
    color: #cbd5e1;
    opacity: 0.85;
    background: transparent;
    border: none;
    outline: none;
    font-size: 1.25rem;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    margin: 0;
    -webkit-appearance: none;
    appearance: none;
}

.file-card .folder-dropdown-summary:hover {
    color: #ffffff;
    background-color: rgba(255, 255, 255, 0.15);
    opacity: 1;
}

.file-card .folder-dropdown-menu {
    position: absolute;
    top: calc(100% + 4px);
    right: 0;
    z-index: 10001 !important;
    min-width: 190px;
    width: max-content;
    background-color: #1e293b !important;
    background: #1e293b !important;
    border: 1px solid var(--border-color);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.95), 0 6px 14px rgba(0, 0, 0, 0.8);
    opacity: 1 !important;
}

.file-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.file-card-title-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    overflow: hidden;
    flex: 1;
    min-width: 0;
}

.file-card-body {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.file-favicon {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    object-fit: contain;
    flex-shrink: 0;
}

.file-title {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-main);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-meta-row {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.file-date {
    font-size: 0.725rem;
    color: var(--text-dim);
    line-height: 1;
}

.file-folder-separator {
    font-size: 0.725rem;
    color: var(--text-dim);
    line-height: 1;
}

.file-folder-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.725rem;
    color: var(--text-muted);
    text-decoration: none;
    max-width: 140px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    border-radius: 4px;
    padding: 0.05rem 0.25rem;
    transition: color 0.15s ease, background-color 0.15s ease;
}

.file-folder-link:hover {
    color: var(--primary);
    background-color: var(--bg-hover);
    text-decoration: none;
}

.file-folder-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-url {
    font-size: 0.725rem;
    color: var(--text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    display: block;
}

.file-description {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.35;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.file-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    margin-top: auto;
    position: relative;
    max-height: 2.85rem;
    overflow: hidden;
}

.file-tags.expanded {
    max-height: none;
    overflow: visible;
}

.file-tags .tag-badge {
    padding: 0.12rem 0.4rem;
    font-size: 0.68rem;
    gap: 0.25rem;
}

.file-tags-expand-btn {
    display: none;
    align-items: center;
    gap: 0.2rem;
    padding: 0.12rem 0.45rem;
    border-radius: 9999px;
    font-size: 0.68rem;
    font-weight: 600;
    line-height: 1.2;
    background-color: var(--bg-surface-elevated, #334155);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
    box-sizing: border-box;
    user-select: none;
}

.file-tags-expand-btn:hover {
    background-color: var(--bg-hover);
    border-color: var(--primary);
    color: var(--primary);
}

.file-tags-expand-icon {
    width: 0.7rem;
    height: 0.7rem;
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center;
}

.file-tags.expanded .file-tags-expand-icon {
    transform: rotate(180deg);
}

.file-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.725rem;
    color: var(--text-dim);
    border-top: 1px solid var(--border-color);
    padding-top: 0.4rem;
    margin-top: 0.2rem;
}

.file-card.bookmark-read {
    border-color: rgba(148, 163, 184, 0.2);
    background-color: rgba(30, 41, 59, 0.7);
}

.file-card.bookmark-read .file-title {
    color: var(--text-muted);
}

.file-card.bookmark-read:hover {
    border-color: var(--primary);
    background-color: var(--bg-surface);
}

.file-card.bookmark-read:hover .file-title {
    color: var(--text-main);
}

.badge-read {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--success);
    background-color: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: var(--radius-sm);
    padding: 0.05rem 0.25rem;
    line-height: 1.1;
}

.badge-failed {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--danger);
    background-color: rgba(244, 63, 94, 0.15);
    border: 1px solid rgba(244, 63, 94, 0.3);
    border-radius: var(--radius-sm);
    padding: 0.05rem 0.25rem;
    line-height: 1.1;
    display: inline-flex;
    align-items: center;
    gap: 0.2rem;
}

/* Multi-Tag Autocomplete Component */
.tag-multiselect-container {
    position: relative;
    width: 100%;
}

.tag-multiselect-box {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.35rem;
    min-height: 42px;
    padding: 0.35rem 0.5rem;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: text;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
    box-sizing: border-box;
}

.tag-multiselect-box:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
}

.tag-multiselect-selected {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    align-items: center;
}

.tag-multiselect-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.2rem 0.45rem;
    border-radius: var(--radius-sm);
    background-color: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-main);
    line-height: 1.2;
}

.tag-multiselect-pill-name {
    max-width: 140px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tag-multiselect-remove-btn {
    background: transparent;
    border: none;
    color: var(--text-dim);
    cursor: pointer;
    font-size: 0.9rem;
    line-height: 1;
    padding: 0 0.1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: color 0.15s ease;
}

.tag-multiselect-remove-btn:hover {
    color: var(--danger);
}

.tag-multiselect-input {
    flex: 1;
    min-width: 120px;
    border: none;
    background: transparent;
    color: var(--text-main);
    font-size: 0.85rem;
    padding: 0.25rem 0.2rem;
    outline: none;
}

.tag-multiselect-input::placeholder {
    color: var(--text-dim);
}

.tag-multiselect-dropdown {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    z-index: 1050;
    background-color: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
    max-height: 220px;
    overflow-y: auto;
    padding: 0.35rem 0;
}

.tag-multiselect-cat-section {
    padding: 0.2rem 0;
}

.tag-multiselect-cat-header {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.75rem;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-dim);
}

.tag-multiselect-options-list {
    display: flex;
    flex-direction: column;
}

.tag-multiselect-option {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.75rem 0.4rem 1.25rem;
    font-size: 0.825rem;
    color: var(--text-main);
    cursor: pointer;
    transition: background-color 0.15s ease;
}

.tag-multiselect-option:hover {
    background-color: var(--bg-surface-hover);
    color: var(--primary);
}

.tag-multiselect-option-name {
    flex: 1;
}

.tag-multiselect-add-icon {
    font-weight: bold;
    color: var(--primary);
    font-size: 1rem;
}

.tag-multiselect-no-results {
    padding: 0.75rem;
    text-align: center;
    color: var(--text-dim);
    font-size: 0.8rem;
}

/* Tag Badges */
.tag-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.55rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    line-height: 1.2;
    background-color: var(--bg-surface-elevated);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    text-decoration: none;
    transition: border-color 0.15s ease, background-color 0.15s ease;
    box-sizing: border-box;
}

.tag-badge:hover {
    text-decoration: none;
}

.tag-badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* Forms */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-bottom: 1rem;
}

.form-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-main);
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 0.6rem 0.75rem;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.875rem;
    outline: none;
    transition: border-color 0.15s ease;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    border-color: var(--border-focus);
}

.form-textarea {
    min-height: 80px;
    resize: vertical;
}

.form-row-error {
    font-size: 0.8rem;
    color: var(--danger);
    margin-top: 0.25rem;
    display: block;
}

.form-checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    cursor: pointer;
}

.tag-checkboxes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 0.5rem;
    max-height: 150px;
    overflow-y: auto;
    padding: 0.5rem;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

/* Auth Page */
.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 1.5rem;
    background: radial-gradient(circle at top, #1e293b 0%, #0f172a 100%);
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow);
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-top: 0.5rem;
}

.auth-subtitle {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* Modals (Native HTML <dialog> / CSS) */
.modal-dialog {
    background-color: var(--bg-surface);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    max-width: 500px;
    width: 90vw;
    margin: auto;
    box-shadow: var(--shadow);
    overflow: visible;
}

.modal-dialog::backdrop {
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
}

.modal-title {
    font-size: 1.2rem;
    font-weight: 700;
}

.modal-close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
}

.modal-close-btn:hover {
    color: var(--text-main);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

/* Empty states */
.empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
    background-color: var(--bg-surface);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

/* Drawer Backdrop & Mobile Buttons */
.drawer-backdrop {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    z-index: 9998;
}

.mobile-only {
    display: none !important;
}

.drawer-close-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    padding: 0.2rem;
    cursor: pointer;
    transition: color 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}

.drawer-close-btn:hover {
    color: var(--text-main);
    background-color: var(--bg-hover);
    border-color: var(--text-dim);
}

@media (max-width: 1024px) {
    .app-container {
        grid-template-columns: 240px 1fr 240px;
    }
}

@media (max-width: 768px) {
    body.drawer-locked {
        overflow: hidden !important;
    }

    .brand-text {
        display: none;
    }

    .user-menu-name {
        display: none;
    }

    .mobile-only {
        display: inline-flex !important;
    }

    .app-header {
        padding: 0.5rem 0.75rem;
    }

    .app-omnibar {
        margin: 0 0.65rem;
    }

    .app-container {
        grid-template-columns: 1fr;
        height: calc(100vh - 57px);
        overflow: hidden;
    }

    .sidebar {
        position: fixed;
        top: 0;
        bottom: 0;
        width: min(320px, 85vw);
        height: 100vh;
        z-index: 9999;
        background-color: var(--bg-surface);
        overflow-y: auto;
        transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: none;
    }

    .sidebar-left {
        left: 0;
        transform: translateX(-100%);
        border-right: 1px solid var(--border-color);
        border-left: none;
    }

    .sidebar-left.drawer-open {
        transform: translateX(0);
        box-shadow: 6px 0 30px rgba(0, 0, 0, 0.65);
    }

    .sidebar-right {
        right: 0;
        transform: translateX(100%);
        border-left: 1px solid var(--border-color);
        border-right: none;
    }

    .sidebar-right.drawer-open {
        transform: translateX(0);
        box-shadow: -6px 0 30px rgba(0, 0, 0, 0.65);
    }

    .main-content {
        height: 100%;
        overflow-y: auto;
        padding: 1rem 0.75rem;
    }
}

/* Toast Notifications System */
.toast-container {
    position: fixed;
    top: 1.25rem;
    right: 1.25rem;
    z-index: 99999;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-width: 400px;
    width: calc(100vw - 2.5rem);
    pointer-events: none;
}

.toast-alert {
    pointer-events: auto;
    background-color: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
    overflow: hidden;
    animation: toast-slide-in 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    transition: opacity 0.25s ease, transform 0.25s ease;
}

.toast-alert.toast-error {
    border-left: 4px solid var(--danger);
}

.toast-alert.toast-success {
    border-left: 4px solid var(--success);
}

.toast-alert.toast-warning {
    border-left: 4px solid var(--warning);
}

.toast-alert.toast-info {
    border-left: 4px solid var(--primary);
}

.toast-alert.toast-dismissing {
    opacity: 0;
    transform: translateX(100%);
}

.toast-body {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.75rem 1rem;
}

.toast-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
}

.toast-message {
    font-size: 0.85rem;
    color: var(--text-main);
    flex: 1;
    word-break: break-word;
    line-height: 1.35;
}

.toast-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--text-dim);
    cursor: pointer;
    padding: 0 0.25rem;
    line-height: 1;
    transition: color 0.12s ease;
}

.toast-close:hover {
    color: var(--text-main);
}

.toast-progress-track {
    width: 100%;
    height: 3px;
    background-color: rgba(239, 68, 68, 0.2);
}

.toast-alert.toast-success .toast-progress-track {
    background-color: rgba(16, 185, 129, 0.2);
}

.toast-alert.toast-warning .toast-progress-track {
    background-color: rgba(245, 158, 11, 0.2);
}

.toast-alert.toast-info .toast-progress-track {
    background-color: rgba(56, 189, 248, 0.2);
}

.toast-progress-bar {
    height: 100%;
    width: 100%;
    background-color: var(--danger);
}

.toast-alert.toast-success .toast-progress-bar {
    background-color: var(--success);
}

.toast-alert.toast-warning .toast-progress-bar {
    background-color: var(--warning);
}

.toast-alert.toast-info .toast-progress-bar {
    background-color: var(--primary);
}

@keyframes toast-slide-in {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Hierarchical Folder Autocomplete Component */
.folder-autocomplete-container {
    position: relative;
    width: 100%;
}

.folder-autocomplete-control {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 0.85rem;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    user-select: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.folder-autocomplete-control:hover {
    border-color: var(--primary);
}

.folder-autocomplete-control.is-open {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
}

.folder-autocomplete-badge-preview {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    overflow: hidden;
}

.folder-autocomplete-preview-icon {
    font-size: 1rem;
    flex-shrink: 0;
}

.folder-autocomplete-preview-label {
    font-size: 0.9rem;
    color: var(--text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.folder-autocomplete-arrow {
    color: var(--text-muted);
    font-size: 0.8rem;
    transition: transform 0.15s ease;
}

.folder-autocomplete-control.is-open .folder-autocomplete-arrow {
    transform: rotate(180deg);
}

.folder-autocomplete-dropdown {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    z-index: 1050;
    background-color: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: toast-slide-in 0.15s ease-out;
}

.folder-autocomplete-search-box {
    padding: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-surface);
}

.folder-autocomplete-search-input {
    width: 100%;
    padding: 0.4rem 0.6rem;
    font-size: 0.85rem;
}

.folder-autocomplete-menu {
    overflow-y: auto;
    max-height: 220px;
    padding: 0.35rem 0;
}

.folder-autocomplete-option {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.45rem 0.75rem;
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--text-main);
    transition: background-color 0.12s ease;
}

.folder-autocomplete-option:hover {
    background-color: var(--bg-hover);
}

.folder-autocomplete-option.selected {
    background-color: rgba(56, 189, 248, 0.15);
    font-weight: 600;
}

.folder-autocomplete-option.keyboard-focused,
.category-autocomplete-option.keyboard-focused,
.tag-autocomplete-option.keyboard-focused,
.tag-multiselect-option.keyboard-focused {
    background-color: rgba(56, 189, 248, 0.22) !important;
    color: var(--primary) !important;
    outline: 1px solid var(--primary);
}

.folder-autocomplete-menu .folder-autocomplete-option.disabled-option,
.category-autocomplete-menu .category-autocomplete-option.disabled-option,
.tag-autocomplete-menu .tag-autocomplete-option.disabled-option {
    opacity: 0.45;
    cursor: not-allowed;
    background-color: transparent !important;
    pointer-events: none;
    user-select: none;
}

.folder-tree-indent {
    display: inline-block;
    flex-shrink: 0;
}

.folder-tree-branch {
    color: var(--text-dim);
    font-size: 0.75rem;
    font-family: monospace;
    flex-shrink: 0;
}

.folder-autocomplete-option-name {
    flex-shrink: 0;
}

.folder-autocomplete-option-path {
    font-size: 0.75rem;
    color: var(--text-dim);
    margin-left: auto;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 160px;
}

.folder-autocomplete-no-results {
    padding: 1rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.category-autocomplete-tag-count {
    margin-left: auto;
    font-size: 0.75rem;
    color: var(--text-dim);
    white-space: nowrap;
    padding-left: 0.5rem;
}

.category-autocomplete-preview-dot {
    flex-shrink: 0;
}

/* Infinite Scroll Sentinel & HTMX Indicator */
.infinite-scroll-sentinel {
    grid-column: 1 / -1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1.5rem 0;
    width: 100%;
    min-height: 48px;
}

.loading-indicator-box {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 0.6rem 1.25rem;
    border-radius: var(--radius-full);
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 500;
}

.htmx-request .loading-indicator-box,
.htmx-request.loading-indicator-box,
.loading-indicator-box.htmx-request {
    display: flex !important;
}

.spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(56, 189, 248, 0.2);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Panel Loading Indicator */
.htmx-indicator-panel {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 0.75rem;
    padding: 3rem 1.5rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 500;
    width: 100%;
    min-height: 120px;
    box-sizing: border-box;
}

.htmx-indicator-panel .spinner {
    width: 24px;
    height: 24px;
    border-width: 3px;
}

/* Tag Badges & Embedded Manageable Menu */
.tag-badge-manageable {
    padding: 0;
    gap: 0;
    position: relative;
    box-sizing: border-box;
    display: inline-flex;
    align-items: stretch;
    border-radius: 9999px;
}

.tag-badge-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    color: inherit;
    text-decoration: none;
    background: none;
    border: none;
    padding: 0.25rem 0.35rem 0.25rem 0.55rem;
    margin: 0;
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: 500;
    font-family: inherit;
    line-height: 1.2;
    border-top-left-radius: 9999px;
    border-bottom-left-radius: 9999px;
    transition: background-color 0.15s ease;
}

.tag-badge-btn:hover {
    text-decoration: none;
    color: inherit;
    background: rgba(255, 255, 255, 0.06);
}

.tag-badge-name {
    line-height: 1.2;
    white-space: nowrap;
}

.tag-item-dropdown {
    position: relative;
    display: inline-flex;
    align-items: stretch;
    margin: 0;
    padding: 0;
}

.tag-item-dropdown-summary {
    font-size: 0.85rem;
    padding: 0 0.45rem;
    margin: 0;
    color: #cbd5e1;
    opacity: 0.85;
    cursor: pointer;
    border-top-right-radius: 9999px;
    border-bottom-right-radius: 9999px;
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    list-style: none;
    user-select: none;
    border: none;
    background: transparent;
    transition: color 0.15s ease, background-color 0.15s ease, opacity 0.15s ease;
}

.tag-item-dropdown-summary::-webkit-details-marker {
    display: none;
}

.tag-item-dropdown-summary:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.25);
    opacity: 1;
}

.tag-badge.active .tag-item-dropdown-summary:hover {
    background: rgba(56, 189, 248, 0.35);
    color: #ffffff;
    opacity: 1;
}

.tag-badge-manageable:has(details[open]),
.tag-badge-manageable:focus-within,
.tag-cat-group:has(details[open]),
.tags-flex:has(details[open]),
.folder-tree-row:has(details[open]) {
    position: relative;
    z-index: 10000;
}

.tag-item-dropdown .folder-dropdown-menu {
    min-width: 140px;
    z-index: 999999;
}

/* Virtual Placeholder Card & Workflow Animation */
.file-card-virtual {
    border: 1px dashed var(--primary);
    background-color: rgba(56, 189, 248, 0.05);
    box-shadow: 0 0 12px rgba(56, 189, 248, 0.15);
    animation: virtualCardPulse 2s ease-in-out infinite alternate;
}

@keyframes virtualCardPulse {
    0% {
        border-color: rgba(56, 189, 248, 0.4);
        box-shadow: 0 0 8px rgba(56, 189, 248, 0.1);
    }
    100% {
        border-color: var(--primary);
        box-shadow: 0 0 16px rgba(56, 189, 248, 0.25);
    }
}

.card-slot-reveal {
    animation: cardSlotReveal 350ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes cardSlotReveal {
    0% {
        opacity: 0;
        transform: scale(0.92) translateY(-10px);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.file-favicon-spinner {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.spinner-small {
    width: 14px;
    height: 14px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.file-title-pending {
    color: var(--text-dim);
    font-style: italic;
}

.workflow-badge-pending {
    font-size: 0.65rem;
    font-weight: 600;
    padding: 0.15rem 0.45rem;
    border-radius: 9999px;
    background-color: rgba(56, 189, 248, 0.15);
    color: var(--primary);
    border: 1px solid rgba(56, 189, 248, 0.3);
    margin-left: auto;
}

.workflow-status-banner {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.725rem;
    color: var(--primary);
    background: rgba(56, 189, 248, 0.08);
    border-radius: var(--radius-sm);
    padding: 0.25rem 0.45rem;
    border: 1px solid rgba(56, 189, 248, 0.15);
}

.workflow-status-icon {
    font-size: 0.8rem;
    animation: spin 3s linear infinite;
}

.workflow-status-text {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.modal-url-indicator {
    margin: -0.25rem 0 1.15rem 0;
    padding: 0.45rem 0.65rem;
    background: rgba(56, 189, 248, 0.08);
    border: 1px solid rgba(56, 189, 248, 0.2);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    color: var(--text-dim);
    display: flex;
    align-items: center;
    gap: 0.45rem;
}

.modal-url-indicator-text {
    color: var(--primary);
    font-family: monospace;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* SVG App Icons */
.app-icon {
    display: inline-block;
    vertical-align: -0.15em;
    width: 1.1em;
    height: 1.1em;
    stroke-width: 2;
    stroke: currentColor;
    fill: none;
    flex-shrink: 0;
}

.icon-xs {
    width: 0.8rem;
    height: 0.8rem;
}

.icon-sm {
    width: 0.95rem;
    height: 0.95rem;
}

.icon-md {
    width: 1.15rem;
    height: 1.15rem;
}

.icon-lg {
    width: 1.5rem;
    height: 1.5rem;
}

.icon-xl {
    width: 2.25rem;
    height: 2.25rem;
}

/* Global Persistent HTMX Loader Indicator */
.global-htmx-loader {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: transparent;
    z-index: 999999;
    overflow: hidden;
    pointer-events: none;
}

.global-htmx-loader.htmx-request {
    display: block;
}

.global-htmx-loader-bar {
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--primary), var(--secondary, #38bdf8), transparent);
    background-size: 200% 100%;
    animation: globalLoaderAnim 1.2s infinite ease-in-out;
}

@keyframes globalLoaderAnim {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

/* Floating Shared Context Menus */
.floating-context-menu {
    position: fixed;
    z-index: 100000;
    display: none;
    flex-direction: column;
    min-width: 190px;
    width: max-content;
    background-color: #1e293b;
    border: 1px solid var(--border-color, #334155);
    border-radius: var(--radius-md, 8px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.8), 0 8px 10px -6px rgba(0, 0, 0, 0.8);
    padding: 0.25rem 0;
    margin: 0;
}

.floating-context-menu.open {
    display: flex;
}

.context-menu-trigger {
    cursor: pointer;
    background: transparent;
    border: none;
    padding: 0;
    margin: 0;
    line-height: 1;
    font-size: 1.25rem;
    font-weight: 700;
    color: #cbd5e1;
    user-select: none;
}

.context-menu-trigger:hover,
.context-menu-trigger.context-menu-active {
    color: #ffffff;
    opacity: 1;
}