/* Windows 11 File Explorer Styles for Dev-Journal */

/* ========================================
   WINDOWS 11 CSS VARIABLES
   ======================================== */
:root {
    /* Windows 11 Color Palette */
    --win11-bg: #202020;
    --win11-sidebar-bg: #1f1f1f;
    --win11-toolbar-bg: #2d2d2d;
    --win11-hover: #3d3d3d;
    --win11-active: #4d4d4d;
    --win11-selected: #0078d4;
    --win11-selected-bg: rgba(0, 120, 212, 0.15);
    --win11-selected-hover: rgba(0, 120, 212, 0.25);
    --win11-border: #3d3d3d;
    --win11-border-light: #4d4d4d;
    --win11-text: #ffffff;
    --win11-text-secondary: #9ca3af;
    --win11-text-muted: #6b7280;

    /* Windows 11 Folder Colors */
    --folder-default: #ffc107;
    --folder-blue: #0078d4;
    --folder-green: #10b981;
    --folder-red: #ef4444;
    --folder-purple: #8b5cf6;
    --folder-yellow: #f59e0b;
    --folder-orange: #f97316;
    --folder-cyan: #06b6d4;

    /* Windows 11 Layout Sizes */
    --win11-toolbar-height: 48px;
    --win11-addressbar-height: 40px;
    --win11-tabs-height: 36px;
    --win11-statusbar-height: 26px;
    --win11-sidebar-width: 240px;
    --win11-sidebar-collapsed: 48px;

    /* Windows 11 Specific */
    --win11-radius: 4px;
    --win11-radius-lg: 8px;
}

/* ========================================
   WINDOWS 11 EXPLORER MAIN CONTAINER
   ======================================== */
.win11-explorer {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 70px); /* Subtract header height */
    background: var(--win11-bg);
    overflow: hidden;
}

/* Full-width shell tuning for explorer home only */
.explorer-shell header .header-content,
.explorer-shell .nav-container {
    max-width: none;
}

/* ========================================
   WINDOWS 11 TOOLBAR
   ======================================== */
.win11-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--win11-toolbar-height);
    background: var(--win11-toolbar-bg);
    border-bottom: 1px solid var(--win11-border);
    padding: 0 var(--space-md);
    flex-shrink: 0;
}

.toolbar-left {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.toolbar-right {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.toolbar-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 6px 12px;
    background: transparent;
    border: none;
    border-radius: var(--win11-radius);
    color: var(--win11-text);
    cursor: pointer;
    font-size: var(--text-sm);
    min-height: 44px;
    /* Animation: Hover scale + shadow */
    transition: background var(--anim-fast, 150ms) var(--anim-easing, ease),
                transform var(--anim-fast, 150ms) var(--anim-easing, ease),
                box-shadow var(--anim-fast, 150ms) var(--anim-easing, ease);
}

.toolbar-btn:hover {
    background: var(--win11-hover);
    transform: translateY(-1px);
}

.toolbar-btn:active {
    transform: translateY(0) scale(0.98);
}

.toolbar-btn:active {
    background: var(--win11-active);
}

.toolbar-btn.primary {
    background: var(--win11-selected);
}

.toolbar-btn.primary:hover {
    background: #1a86d9;
}

.toolbar-btn.danger:hover {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.toolbar-btn .btn-icon {
    font-size: 16px;
}

.toolbar-btn .btn-label {
    font-weight: 500;
}

.toolbar-separator {
    width: 1px;
    height: 24px;
    background: var(--win11-border);
    margin: 0 var(--space-xs);
}

/* Toolbar Dropdowns */
.toolbar-dropdown {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 6px 12px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--win11-radius);
    color: var(--win11-text-secondary);
    cursor: pointer;
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
}

.toolbar-dropdown:hover {
    background: var(--win11-hover);
    border-color: var(--win11-border);
    color: var(--win11-text);
}

.toolbar-dropdown .dropdown-arrow {
    font-size: 10px;
    margin-left: 2px;
}

/* Dropdown Menu */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--win11-toolbar-bg);
    border: 1px solid var(--win11-border);
    border-radius: var(--win11-radius-lg);
    box-shadow: var(--shadow-lg);
    min-width: 180px;
    padding: var(--space-xs) 0;
    z-index: 100;
    /* Animation: Fade + Slide */
    opacity: 0;
    transform: translateY(-8px);
    visibility: hidden;
    transition: opacity var(--anim-fast, 150ms) var(--anim-easing, ease),
                transform var(--anim-fast, 150ms) var(--anim-easing, ease),
                visibility 0s linear var(--anim-fast, 150ms);
}

.dropdown-menu.show {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
    transition: opacity var(--anim-fast, 150ms) var(--anim-easing, ease),
                transform var(--anim-fast, 150ms) var(--anim-easing, ease),
                visibility 0s linear 0s;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 8px 16px;
    color: var(--win11-text);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--win11-hover);
}

.dropdown-item.active {
    background: var(--win11-selected-bg);
    color: var(--win11-selected);
}

.dropdown-item .check-icon {
    width: 16px;
    visibility: hidden;
}

.dropdown-item.active .check-icon {
    visibility: visible;
}

/* ========================================
   WINDOWS 11 ADDRESS BAR
   ======================================== */
.win11-addressbar {
    display: flex;
    align-items: center;
    min-height: 48px;
    height: auto;
    background: var(--win11-toolbar-bg);
    border-bottom: 1px solid var(--win11-border);
    padding: 0 var(--space-md);
    gap: var(--space-md);
    flex-shrink: 0;
}

.win11-addressbar > * {
    min-width: 0;
}

/* Navigation Buttons */
.nav-buttons {
    display: flex;
    align-items: center;
    gap: 2px;
}

.nav-btn {
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--win11-radius);
    color: var(--win11-text-secondary);
    cursor: pointer;
    font-size: 12px;
    transition: all var(--transition-fast);
}

.nav-btn:hover:not(:disabled) {
    background: var(--win11-hover);
    color: var(--win11-text);
}

.nav-btn:active:not(:disabled) {
    background: var(--win11-active);
}

.nav-btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

/* Breadcrumb Bar */
.breadcrumb-container {
    flex: 1;
    display: flex;
    align-items: center;
    background: var(--win11-bg);
    border: 1px solid var(--win11-border);
    border-radius: var(--win11-radius);
    padding: 0 var(--space-sm);
    height: 28px;
    overflow: hidden;
}

.breadcrumb-container:focus-within {
    border-color: var(--win11-selected);
}

.breadcrumb-path {
    display: flex;
    align-items: center;
    gap: 2px;
    flex: 1;
    overflow: hidden;
    list-style: none;
    margin: 0;
    padding: 0;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    padding: 2px 8px;
    color: var(--win11-text-secondary);
    font-size: var(--text-sm);
    cursor: pointer;
    border-radius: var(--win11-radius);
    white-space: nowrap;
    text-decoration: none;
}

.breadcrumb-item:visited {
    color: var(--win11-text-secondary);
}

.breadcrumb-item:hover {
    background: var(--win11-hover);
    color: var(--win11-text);
}

.breadcrumb-separator {
    color: var(--win11-text-muted);
    font-size: 11px;
    padding: 0 2px;
}

.breadcrumb-current {
    color: var(--win11-text);
    font-weight: 500;
}

/* Search Box */
.win11-search {
    display: flex;
    align-items: center;
    background: var(--win11-bg);
    border: 1px solid var(--win11-border);
    border-radius: var(--win11-radius);
    overflow: hidden;
    min-width: 220px;
    min-height: 36px;
    height: auto;
    /* Animation: Focus expansion + glow */
    transition: min-width var(--anim-normal, 200ms) var(--anim-easing, ease),
                border-color var(--anim-fast, 150ms) var(--anim-easing, ease),
                box-shadow var(--anim-fast, 150ms) var(--anim-easing, ease);
}

.win11-search:focus-within {
    border-color: var(--win11-selected);
    min-width: 280px;
    box-shadow: 0 0 0 2px rgba(0, 120, 212, 0.2);
}

.win11-search input {
    flex: 1;
    min-width: 0;
    background: transparent;
    border: none;
    padding: 0 var(--space-sm);
    color: var(--win11-text);
    font-size: var(--text-sm);
    outline: none;
}

.win11-search input::placeholder {
    color: var(--win11-text-muted);
}

.win11-search .search-btn {
    min-width: 36px;
    min-height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--win11-text-secondary);
    cursor: pointer;
}

.win11-search .search-btn:hover {
    background: var(--win11-hover);
    color: var(--win11-text);
}

/* ========================================
   WINDOWS 11 TABS
   ======================================== */
.win11-tabs {
    display: flex;
    align-items: flex-end;
    height: var(--win11-tabs-height);
    background: var(--win11-toolbar-bg);
    border-bottom: 1px solid var(--win11-border);
    padding: 0 var(--space-md);
    gap: 4px;
    flex-shrink: 0;
}

.win11-tab {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 8px 16px;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--win11-text-secondary);
    cursor: pointer;
    font-size: var(--text-sm);
    font-weight: 500;
    margin-bottom: -1px;
    /* Animation: Smooth color and border transitions */
    transition: color var(--anim-fast, 150ms) var(--anim-easing, ease),
                background var(--anim-fast, 150ms) var(--anim-easing, ease),
                border-color var(--anim-normal, 200ms) var(--anim-easing, ease),
                transform var(--anim-fast, 150ms) var(--anim-easing, ease);
}

.win11-tab:hover {
    color: var(--win11-text);
    background: var(--win11-hover);
}

.win11-tab:active {
    transform: scale(0.98);
}

.win11-tab.active {
    color: var(--win11-selected);
    border-bottom-color: var(--win11-selected);
}

.win11-tab .tab-icon {
    font-size: 14px;
}

/* ========================================
   WINDOWS 11 MAIN CONTENT AREA
   ======================================== */
.win11-main {
    display: flex;
    flex: 1;
    overflow: hidden;
    min-width: 0;
}

/* ========================================
   WINDOWS 11 SIDEBAR
   ======================================== */
.win11-sidebar {
    width: var(--win11-sidebar-width);
    background: var(--win11-sidebar-bg);
    border-right: 1px solid var(--win11-border);
    overflow-y: auto;
    overflow-x: hidden;
    flex-shrink: 0;
    padding: var(--space-sm) 0;
}

/* Sidebar Scrollbar */
.win11-sidebar::-webkit-scrollbar {
    width: 8px;
}

.win11-sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.win11-sidebar::-webkit-scrollbar-thumb {
    background: var(--win11-border);
    border-radius: 4px;
}

.win11-sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--win11-border-light);
}

/* Sidebar Sections */
.sidebar-section {
    margin-bottom: var(--space-xs);
}

/* Sidebar Section Header (Collapsible) */
.section-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 6px var(--space-md);
    min-height: 44px;
    cursor: pointer;
    user-select: none;
    transition: background var(--transition-fast);
    /* Button reset for semantic <button> element */
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    font: inherit;
    color: inherit;
}

.section-header:hover {
    background: var(--win11-hover);
}

.collapse-arrow {
    font-size: 10px;
    color: var(--win11-text-secondary);
    width: 12px;
    /* Animation: Smooth rotation */
    transition: transform var(--anim-fast, 150ms) var(--anim-easing, ease);
}

.collapse-arrow.collapsed {
    transform: rotate(-90deg);
}

.section-title {
    font-size: var(--text-xs);
    color: var(--win11-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

/* Section Content */
.section-content {
    overflow: hidden;
    max-height: 500px;
    opacity: 1;
    /* Animation: Height + Opacity */
    transition: max-height var(--anim-slow, 300ms) var(--anim-easing, ease),
                opacity var(--anim-normal, 200ms) var(--anim-easing, ease);
}

.section-content.collapsed {
    max-height: 0 !important;
    opacity: 0;
}

/* Sidebar Items */
.sidebar-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 6px var(--space-md) 6px 28px;
    min-height: 44px;
    color: var(--win11-text);
    text-decoration: none;
    font-size: var(--text-sm);
    cursor: pointer;
    border-left: 3px solid transparent;
    /* Animation: Hover slide + background */
    transition: background var(--anim-fast, 150ms) var(--anim-easing, ease),
                border-color var(--anim-fast, 150ms) var(--anim-easing, ease),
                transform var(--anim-fast, 150ms) var(--anim-easing, ease),
                padding-left var(--anim-fast, 150ms) var(--anim-easing, ease);
}

.sidebar-item:visited {
    color: var(--win11-text);
}

.sidebar-item:hover {
    background: var(--win11-hover);
    padding-left: 32px;
}

.sidebar-item.active {
    background: var(--win11-selected-bg);
    border-left-color: var(--win11-selected);
}

.sidebar-item .item-icon {
    font-size: 16px;
    flex-shrink: 0;
}

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

.sidebar-item .item-count {
    font-size: var(--text-xs);
    color: var(--win11-text-muted);
    background: var(--win11-hover);
    padding: 2px 6px;
    border-radius: 10px;
}

/* Colored Folder Icons */
.folder-icon { color: var(--folder-default); }
.folder-icon.blue { color: var(--folder-blue); }
.folder-icon.green { color: var(--folder-green); }
.folder-icon.red { color: var(--folder-red); }
.folder-icon.purple { color: var(--folder-purple); }
.folder-icon.yellow { color: var(--folder-yellow); }
.folder-icon.orange { color: var(--folder-orange); }
.folder-icon.cyan { color: var(--folder-cyan); }

/* Cloud/Sync Status Icon */
.sync-status {
    font-size: 12px;
    margin-left: auto;
}

.sync-status.synced { color: var(--folder-green); }
.sync-status.syncing { color: var(--folder-blue); }
.sync-status.offline { color: var(--win11-text-muted); }

/* ========================================
   WINDOWS 11 CONTENT AREA
   ======================================== */
.win11-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--win11-bg);
    min-width: 0;
}

/* Quick Access Section (Home View) */
.quick-access-grid {
    padding: var(--space-lg);
}

.quick-access-grid h3 {
    font-size: var(--text-sm);
    color: var(--win11-text-secondary);
    margin-bottom: var(--space-md);
    font-weight: 600;
}

/* Pinned Folders Grid */
.pinned-folders {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.pinned-folder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-md);
    border-radius: var(--win11-radius-lg);
    cursor: pointer;
    text-decoration: none;
    color: var(--win11-text);
    text-align: center;
    /* Animation: Entrance + Hover */
    opacity: 0;
    transform: scale(0.9);
    animation: scaleIn var(--anim-slow, 300ms) var(--anim-easing, ease) forwards;
    transition: transform var(--anim-normal, 200ms) var(--anim-easing, ease),
                background var(--anim-fast, 150ms) var(--anim-easing, ease),
                box-shadow var(--anim-normal, 200ms) var(--anim-easing, ease);
}

.pinned-folder:visited {
    color: var(--win11-text);
}

/* Staggered entrance for pinned folders */
.pinned-folder:nth-child(1) { animation-delay: 0ms; }
.pinned-folder:nth-child(2) { animation-delay: 60ms; }
.pinned-folder:nth-child(3) { animation-delay: 120ms; }
.pinned-folder:nth-child(4) { animation-delay: 180ms; }
.pinned-folder:nth-child(5) { animation-delay: 240ms; }

.pinned-folder:hover {
    background: var(--win11-hover);
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.pinned-folder .folder-icon-lg {
    font-size: 42px;
}

.pinned-folder .folder-name {
    font-size: var(--text-sm);
    font-weight: 500;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.pinned-folder .folder-count {
    font-size: var(--text-xs);
    color: var(--win11-text-muted);
}

/* ========================================
   WINDOWS 11 FILE LIST (DETAILS VIEW)
   ======================================== */
.file-list-container {
    flex: 1;
    overflow: auto;
    padding: 0 var(--space-md);
}

/* File List Header */
.file-list-header {
    display: grid;
    grid-template-columns: minmax(200px, 2fr) 140px 100px minmax(100px, 1fr);
    gap: var(--space-md);
    padding: 8px var(--space-md);
    background: var(--win11-toolbar-bg);
    border-bottom: 1px solid var(--win11-border);
    position: sticky;
    top: 0;
    z-index: 10;
}

.file-list-header .col-header {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--text-xs);
    color: var(--win11-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    user-select: none;
    padding: 4px 0;
}

.file-list-header .col-header:hover {
    color: var(--win11-text);
}

.file-list-header .col-header .sort-icon {
    font-size: 10px;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.file-list-header .col-header:hover .sort-icon,
.file-list-header .col-header.sorted .sort-icon {
    opacity: 1;
}

.file-list-header .col-header.sorted {
    color: var(--win11-selected);
}

/* File List Items */
.file-list {
    display: flex;
    flex-direction: column;
}

.file-item {
    display: grid;
    grid-template-columns: minmax(200px, 2fr) 140px 100px minmax(100px, 1fr);
    gap: var(--space-md);
    padding: 8px var(--space-md);
    min-height: 44px;
    align-items: center;
    border-bottom: 1px solid var(--win11-border);
    cursor: pointer;
    text-decoration: none;
    color: var(--win11-text);
    /* Animation: Entrance + Hover */
    opacity: 0;
    animation: slideUp var(--anim-normal, 200ms) var(--anim-easing, ease) forwards;
    transition: background var(--anim-fast, 150ms) var(--anim-easing, ease),
                transform var(--anim-fast, 150ms) var(--anim-easing, ease);
}

/* Staggered entrance for file items */
.file-item:nth-child(1) { animation-delay: 0ms; }
.file-item:nth-child(2) { animation-delay: 30ms; }
.file-item:nth-child(3) { animation-delay: 60ms; }
.file-item:nth-child(4) { animation-delay: 90ms; }
.file-item:nth-child(5) { animation-delay: 120ms; }
.file-item:nth-child(6) { animation-delay: 150ms; }
.file-item:nth-child(7) { animation-delay: 180ms; }
.file-item:nth-child(8) { animation-delay: 210ms; }
.file-item:nth-child(9) { animation-delay: 240ms; }
.file-item:nth-child(10) { animation-delay: 270ms; }
.file-item:nth-child(n+11) { animation-delay: 300ms; }

.file-item:hover {
    background: var(--win11-hover);
    transform: translateX(4px);
}

.file-item.selected {
    background: var(--win11-selected-bg);
}

.file-item.selected:hover {
    background: var(--win11-selected-hover);
}

.file-item.focused {
    outline: 1px solid var(--win11-selected);
    outline-offset: -1px;
}

.file-item:focus-visible {
    outline: 2px solid var(--win11-selected);
    outline-offset: -2px;
}

/* File Name Column */
.file-name {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    overflow: hidden;
}

.file-name .file-checkbox {
    width: 16px;
    height: 16px;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.file-item:hover .file-checkbox,
.file-item.selected .file-checkbox {
    opacity: 1;
}

.file-name .file-icon {
    font-size: 20px;
    flex-shrink: 0;
}

.file-text {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    min-width: 0;
    flex: 1;
}

.file-name .file-title {
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
}

.file-mobile-meta {
    display: none;
    color: var(--win11-text-muted);
    font-size: var(--text-xs);
}

.file-name .file-subtitle {
    font-size: var(--text-xs);
    color: var(--win11-text-muted);
    margin-left: var(--space-sm);
}

/* Other Columns */
.file-date,
.file-category,
.file-activity {
    font-size: var(--text-sm);
    color: var(--win11-text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Category Badge */
.category-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    background: var(--win11-hover);
    border-radius: 12px;
    font-size: var(--text-xs);
}

.category-badge .badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.category-badge.daily-learning .badge-dot { background: var(--folder-blue); border-radius: 50%; }
.category-badge.project-note .badge-dot { background: var(--folder-green); border-radius: 2px; }
.category-badge.bug-fix .badge-dot { background: var(--folder-red); border-radius: 50%; border: 1.5px solid var(--folder-red); background: transparent; }
.category-badge.code-snippet .badge-dot { background: var(--folder-purple); border-radius: 0; transform: rotate(45deg); }
.category-badge.concept .badge-dot { background: var(--folder-yellow); clip-path: polygon(50% 0%, 0% 100%, 100% 100%); border-radius: 0; }

/* ========================================
   WINDOWS 11 STATUS BAR
   ======================================== */
.win11-statusbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--win11-statusbar-height);
    background: var(--win11-toolbar-bg);
    border-top: 1px solid var(--win11-border);
    padding: 0 var(--space-md);
    font-size: var(--text-xs);
    color: var(--win11-text-secondary);
    flex-shrink: 0;
}

.statusbar-left {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.statusbar-right {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

/* View Mode Toggle in Status Bar */
.view-mode-toggle {
    display: flex;
    align-items: center;
    gap: 2px;
}

.view-mode-btn {
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--win11-text-muted);
    cursor: pointer;
    border-radius: var(--win11-radius);
    font-size: 12px;
}

.view-mode-btn:hover {
    background: var(--win11-hover);
    color: var(--win11-text);
}

.view-mode-btn.active {
    color: var(--win11-selected);
}

/* ========================================
   WINDOWS 11 EMPTY STATE
   ======================================== */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-3xl);
    text-align: center;
    color: var(--win11-text-secondary);
}

.empty-state .empty-icon {
    font-size: 64px;
    margin-bottom: var(--space-lg);
    opacity: 0.5;
}

.empty-state .empty-title {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--win11-text);
}

.empty-state .empty-text {
    margin-bottom: var(--space-lg);
}

.empty-state .empty-action {
    padding: 10px 24px;
    background: var(--win11-selected);
    color: white;
    border: none;
    border-radius: var(--win11-radius);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
}

.empty-state .empty-action:visited {
    color: white;
}

.empty-state .empty-action:hover {
    background: #1a86d9;
}

/* ========================================
   WINDOWS 11 LOADING STATE
   ======================================== */
.win11-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-3xl);
}

.win11-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--win11-border);
    border-top-color: var(--win11-selected);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ========================================
   RESPONSIVE - MOBILE
   ======================================== */
@media (max-width: 768px) {
    .win11-explorer {
        height: calc(100vh - 60px);
    }

    .win11-nav-links {
        display: none;
    }

    .win11-sidebar {
        position: fixed;
        left: 0;
        top: var(--nav-height, 60px);
        bottom: 0;
        z-index: 1200;
        width: min(86vw, 300px);
        transform: translateX(-105%);
        visibility: hidden;
        pointer-events: none;
        box-shadow: 12px 0 24px rgba(0, 0, 0, 0.45);
        transition: transform var(--transition-normal), visibility 0s linear var(--transition-normal);
    }

    .win11-sidebar.open {
        transform: translateX(0);
        visibility: visible;
        pointer-events: auto;
        transition: transform var(--transition-normal), visibility 0s linear 0s;
    }

    .win11-sidebar-overlay {
        position: fixed;
        top: var(--nav-height, 60px);
        right: 0;
        bottom: 0;
        left: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 1190;
        display: block;
        opacity: 0;
        pointer-events: none;
        transition: opacity var(--transition-normal);
    }

    .win11-toolbar {
        overflow-x: auto;
        overflow-y: hidden;
        -webkit-overflow-scrolling: touch;
        gap: var(--space-sm);
    }

    .toolbar-left,
    .toolbar-right {
        flex-wrap: nowrap;
        min-width: max-content;
    }

    .win11-sidebar-overlay.show {
        opacity: 1;
        pointer-events: auto;
    }

    #sidebarToggle {
        min-width: auto;
        padding: 0 10px;
        gap: 6px;
        border: 1px solid var(--win11-border);
        color: var(--win11-text);
    }

    #sidebarToggle::after {
        content: 'Folders';
        font-size: 11px;
        font-weight: 600;
        letter-spacing: 0.2px;
    }

    .file-list-header,
    .file-item {
        grid-template-columns: 1fr;
        gap: var(--space-xs);
    }

    .file-list-header .col-header:not(:first-child),
    .file-item > *:not(.file-name) {
        display: none;
    }

    .quick-access-grid {
        padding: var(--space-md);
    }

    .quick-access-grid h3 {
        margin-bottom: var(--space-sm);
    }

    .quick-access-grid h3 + .pinned-folders {
        margin-bottom: var(--space-lg);
    }

    .win11-search {
        min-width: 150px;
    }

    .toolbar-btn .btn-label {
        display: none;
    }

    .pinned-folders {
        display: flex;
        grid-template-columns: none;
        gap: var(--space-sm);
        overflow-x: auto;
        overflow-y: hidden;
        -webkit-overflow-scrolling: touch;
        padding-bottom: var(--space-xs);
        margin-bottom: var(--space-lg);
        scroll-snap-type: x proximity;
    }

    .pinned-folder {
        flex: 0 0 108px;
        min-width: 108px;
        padding: var(--space-sm);
        scroll-snap-align: start;
    }

    .pinned-folder .folder-icon-lg {
        font-size: 34px;
    }

    .pinned-folder .folder-name {
        white-space: normal;
        text-overflow: clip;
        overflow: hidden;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;
        line-height: 1.2;
        min-height: 2.4em;
    }

    .pinned-folder .folder-count {
        display: none;
    }

    .file-list-container {
        min-height: 220px;
        padding: 0 var(--space-sm);
    }

    .file-list-header {
        padding: 8px var(--space-sm);
    }

    .file-item {
        padding: 10px var(--space-sm);
    }

    .file-name {
        align-items: flex-start;
        gap: var(--space-sm);
    }

    .file-name .file-checkbox {
        display: none;
    }

    .file-name .file-icon {
        margin-top: 1px;
        font-size: 18px;
    }

    .file-text {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
    }

    .file-name .file-title {
        white-space: normal;
        line-height: 1.3;
    }

    .file-mobile-meta {
        display: block;
    }

    .win11-statusbar {
        padding: 0 var(--space-sm);
    }

    .statusbar-left {
        min-width: 0;
        overflow: hidden;
        white-space: nowrap;
        text-overflow: ellipsis;
    }

    .statusbar-right {
        flex-shrink: 0;
    }
}

@media (max-width: 480px) {
    .win11-toolbar {
        flex-wrap: nowrap;
        height: auto;
        min-height: var(--win11-toolbar-height);
        padding: var(--space-xs) var(--space-sm);
    }

    .toolbar-separator {
        display: none;
    }

    .toolbar-btn {
        padding: 4px 8px;
    }

    .win11-tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .win11-tab {
        white-space: nowrap;
        flex-shrink: 0;
        padding: 6px 12px;
        font-size: var(--text-xs);
    }

    .win11-addressbar {
        flex-wrap: wrap;
        height: auto;
        min-height: var(--win11-addressbar-height);
        gap: var(--space-xs);
        padding: var(--space-xs) var(--space-sm);
    }

    .win11-search {
        min-width: 120px;
        flex: 1;
    }

    .breadcrumb-container {
        display: none;
    }

    .pinned-folders {
        display: flex;
    }

    .toolbar-dropdown-container {
        position: static;
    }

    .dropdown-menu {
        position: fixed;
        left: var(--space-sm);
        right: var(--space-sm);
        bottom: var(--space-lg);
        top: auto;
        min-width: unset;
        max-height: 60vh;
        overflow-y: auto;
    }

    .dropdown-item {
        min-height: 44px;
        padding: 12px 16px;
    }

    #favoriteBtn,
    #deleteBtn {
        display: none;
    }
}

@media (max-width: 360px) {
    .win11-toolbar {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        flex-wrap: nowrap;
    }

    .toolbar-left, .toolbar-right {
        flex-shrink: 0;
    }

    .toolbar-btn {
        min-width: 36px;
        min-height: 36px;
        padding: 2px 6px;
    }

    .toolbar-dropdown {
        padding: 4px 8px;
        font-size: 11px;
    }

    .nav-btn {
        min-width: 36px;
        min-height: 36px;
    }

    .win11-addressbar {
        gap: 4px;
    }

    .win11-search {
        min-width: 0;
        width: 100%;
    }

    .quick-access-grid {
        padding: var(--space-md);
    }

    .pinned-folders {
        gap: var(--space-sm);
    }

    .win11-statusbar {
        font-size: 11px;
    }
}

/* ========================================
   WINDOWS 11 ADMIN BADGE (FOR NAV)
   ======================================== */
.admin-badge {
    background: linear-gradient(135deg, var(--folder-purple), var(--folder-blue));
    color: white;
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 10px;
    margin-left: 4px;
    font-weight: 600;
}

/* Nav Link Styles for Win11 */
.win11-nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    margin-left: var(--space-lg);
}

.win11-nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 6px 12px;
    color: var(--win11-text-secondary);
    text-decoration: none;
    font-size: var(--text-sm);
    border-radius: var(--win11-radius);
    transition: all var(--transition-fast);
}

.win11-nav-link:visited {
    color: var(--win11-text-secondary);
}

.win11-nav-link:hover {
    background: var(--win11-hover);
    color: var(--win11-text);
}

.win11-nav-link.active {
    background: var(--win11-selected-bg);
    color: var(--win11-selected);
}

/* Keep top nav clean on mobile: brand + hamburger only */
@media (max-width: 768px) {
    .win11-nav-links {
        display: none !important;
    }
}

/* ========================================
   AI MODAL & BUTTONS
   ======================================== */

/* AI toolbar button accent */
.toolbar-btn.ai-btn {
    color: #a78bfa;
}

.toolbar-btn.ai-btn:hover {
    background: rgba(167, 139, 250, 0.15);
    color: #c4b5fd;
}

/* AI button for entry page */
.btn-ai {
    background: rgba(167, 139, 250, 0.15);
    color: #a78bfa;
    border: 1px solid rgba(167, 139, 250, 0.3);
    padding: 8px 16px;
    border-radius: var(--win11-radius);
    cursor: pointer;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.btn-ai:hover {
    background: rgba(167, 139, 250, 0.25);
    color: #c4b5fd;
}

/* AI context menu action */
.context-menu .ai-action {
    color: #a78bfa;
}

.context-menu .ai-action:hover {
    background: rgba(167, 139, 250, 0.15);
}

/* AI Modal */
.ai-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 2000;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(4px);
}

.ai-modal-content {
    background: var(--win11-sidebar-bg, #1f1f1f);
    border: 1px solid var(--win11-border, #3d3d3d);
    border-radius: var(--win11-radius-lg, 8px);
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: aiModalIn 0.2s ease;
}

@keyframes aiModalIn {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.ai-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--win11-border, #3d3d3d);
}

.ai-modal-title {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: #a78bfa;
}

.ai-modal-close {
    background: none;
    border: none;
    color: var(--win11-text-secondary, #9ca3af);
    font-size: 1.4rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--win11-radius, 4px);
    transition: all var(--transition-fast);
}

.ai-modal-close:hover {
    background: var(--win11-hover, #3d3d3d);
    color: var(--win11-text, #fff);
}

.ai-modal-body {
    padding: 20px;
    overflow-y: auto;
    flex: 1;
    min-height: 120px;
}

.ai-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 32px 0;
    color: var(--win11-text-secondary, #9ca3af);
}

.ai-result {
    line-height: 1.6;
    color: var(--win11-text, #fff);
}

.ai-content p {
    margin: 0 0 12px 0;
}

.ai-content code {
    background: rgba(255, 255, 255, 0.08);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 0.9em;
}

.ai-error {
    color: #ef4444;
    padding: 12px;
    background: rgba(239, 68, 68, 0.1);
    border-radius: var(--win11-radius, 4px);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.ai-modal-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--win11-border, #3d3d3d);
}

.ai-quick-ask {
    display: flex;
    gap: 8px;
}

.ai-quick-ask input {
    flex: 1;
    padding: 8px 12px;
    background: var(--win11-bg, #202020);
    border: 1px solid var(--win11-border, #3d3d3d);
    border-radius: var(--win11-radius, 4px);
    color: var(--win11-text, #fff);
    font-size: 0.9rem;
    outline: none;
    transition: border-color var(--transition-fast);
}

.ai-quick-ask input:focus {
    border-color: #a78bfa;
}

.ai-quick-ask .toolbar-btn.primary {
    padding: 8px 16px;
    white-space: nowrap;
}