/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #00d4ff;
    --secondary-color: #0099cc;
    --background-dark: #0f0f23;
    --background-medium: #1a1a2e;
    --background-light: #16213e;
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.8);
    --text-muted: rgba(255, 255, 255, 0.6);
    --border-color: rgba(255, 255, 255, 0.1);
    --hover-color: rgba(255, 255, 255, 0.05);
    --success-color: #2ed573;
    --warning-color: #ffa502;
    --danger-color: #ff4757;
    --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    --gradient-background: linear-gradient(135deg, var(--background-dark) 0%, var(--background-medium) 100%);
    --shadow-small: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-large: 0 8px 32px rgba(0, 0, 0, 0.2);
    --border-radius: 12px;
    --border-radius-small: 8px;
    --border-radius-large: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gradient-background);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    font-size: 14px;
}

/* Dashboard Layout */
.dashboard {
    display: flex;
    min-height: 100vh;
    position: relative;
}

/* Sidebar */
.sidebar {
    width: 320px;
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(20px);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    z-index: 1000;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-color);
}

.logo i {
    font-size: 22px;
}

.sidebar-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 16px;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--border-radius-small);
    transition: var(--transition);
    display: none;
}

.sidebar-toggle:hover {
    background: var(--hover-color);
}

/* Search Container */
.search-container {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.search-box {
    position: relative;
    margin-bottom: 12px;
}

.search-box i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 14px;
}

.search-box input {
    width: 100%;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 12px 16px 12px 40px;
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(255, 255, 255, 0.12);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

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

.filter-controls {
    display: flex;
    gap: 8px;
}

.filter-controls select {
    flex: 1;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-small);
    padding: 8px 12px;
    color: var(--text-primary);
    font-size: 12px;
    cursor: pointer;
}

.filter-controls select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Navigation */
.sidebar-nav {
    flex: 1;
    padding: 20px 0;
}

.nav-section {
    margin-bottom: 24px;
}

.nav-section h3 {
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
    padding: 0 20px;
}

.nav-section ul {
    list-style: none;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    font-size: 14px;
    font-weight: 500;
}

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

.nav-item.active {
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary-color);
    border-right: 3px solid var(--primary-color);
}

.nav-item i {
    width: 18px;
    font-size: 14px;
    text-align: center;
}

.folder-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 13px;
}

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

.folder-item.active {
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary-color);
}

.folder-count {
    margin-left: auto;
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    font-size: 11px;
    padding: 2px 6px;
    border-radius: 10px;
    font-weight: 500;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 20px;
    border-top: 1px solid var(--border-color);
}

.stats {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
}

.stat {
    text-align: center;
    flex: 1;
}

.stat-number {
    display: block;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
}

.stat-label {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.developer-info {
    text-align: center;
    font-size: 12px;
    color: var(--text-muted);
}

.developer-info strong {
    color: var(--primary-color);
}

.developer-info p {
    margin: 5px 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.repo-credit {
    margin-top: 10px !important;
    padding: 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 6px;
    border-left: 3px solid var(--accent-color);
}

.repo-credit a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    margin-left: 5px;
    transition: color 0.3s ease;
}

.repo-credit a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

.repo-credit i {
    color: #ffd700;
    margin-right: 5px;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 320px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: margin-left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Header */
.header {
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.mobile-menu-btn {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 18px;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--border-radius-small);
    transition: var(--transition);
    display: none;
}

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

.breadcrumb h1 {
    font-size: 24px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 4px;
}

.breadcrumb p {
    color: var(--text-secondary);
    font-size: 14px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.view-controls {
    display: flex;
    gap: 4px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    padding: 4px;
}

.view-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: var(--border-radius-small);
    transition: var(--transition);
}

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

.view-btn.active {
    background: var(--primary-color);
    color: var(--background-dark);
}

.header-actions {
    display: flex;
    gap: 8px;
}

.action-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    padding: 10px 12px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

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

/* Content Area */
.content-area {
    flex: 1;
    padding: 32px;
    position: relative;
}

.view-section {
    display: none;
}

.view-section.active {
    display: block;
    animation: fadeIn 0.3s ease-out;
}

/* Dashboard View */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 24px;
    height: 100%;
}

.dashboard-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-large);
    padding: 24px;
    transition: var(--transition);
}

.dashboard-card:hover {
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: var(--shadow-medium);
}

.dashboard-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.stats-card .stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.08);
}

.stat-item i {
    font-size: 24px;
    color: var(--primary-color);
}

.stat-item .stat-number {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.stat-item .stat-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
}

.quick-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.quick-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 16px;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-align: center;
}

.quick-btn:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.quick-btn i {
    font-size: 20px;
}

.quick-btn span {
    font-size: 12px;
    font-weight: 500;
}

.folders-card {
    grid-column: 1 / -1;
}

.folder-chart {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 8px;
    color: var(--text-secondary);
}

.credits-card {
    grid-column: span 2;
}

.credits-content {
    space-y: 1rem;
}

.credit-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 8px;
    border-left: 4px solid var(--accent-color);
}

.credit-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.credit-info h4 {
    margin: 0 0 0.5rem 0;
    color: var(--text-primary);
    font-size: 1.2rem;
    font-weight: 600;
}

.credit-info p {
    margin: 0.25rem 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.credit-stats {
    color: var(--accent-color) !important;
    font-weight: 500;
}

.credit-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    margin-top: 0.5rem;
    transition: color 0.3s ease;
}

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

.credit-description {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.credit-description p {
    color: var(--text-secondary);
    font-style: italic;
    line-height: 1.5;
}

/* Chart Styles */
.chart-item {
    margin-bottom: 1rem;
}

.chart-bar {
    width: 100%;
    height: 8px;
    background: var(--background-secondary);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.chart-fill {
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 4px;
    transition: width 0.3s ease;
}

.chart-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Tree View Improvements */
.tree-folder {
    margin-bottom: 1rem;
}

/* Grid View */
.files-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.file-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-large);
    padding: 20px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.file-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-large);
}

.file-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.file-card:hover::before {
    opacity: 1;
}

.file-header {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
}

.file-icon {
    font-size: 24px;
    color: var(--primary-color);
    min-width: 24px;
}

.file-info {
    flex: 1;
}

.file-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    line-height: 1.3;
}

.file-path {
    font-size: 12px;
    color: var(--text-muted);
    font-family: 'Monaco', 'Menlo', monospace;
}

.file-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

.file-folder {
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary-color);
    font-size: 11px;
    padding: 4px 8px;
    border-radius: 12px;
    font-weight: 500;
}

.file-size {
    font-size: 11px;
    color: var(--text-muted);
}

/* List View */
.files-list {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-large);
    overflow: hidden;
}

.list-header {
    display: grid;
    grid-template-columns: 2fr 1fr 80px 100px;
    gap: 16px;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid var(--border-color);
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.list-body {
    max-height: 70vh;
    overflow-y: auto;
}

.list-item {
    display: grid;
    grid-template-columns: 2fr 1fr 80px 100px;
    gap: 16px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
    align-items: center;
}

.list-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.list-item:last-child {
    border-bottom: none;
}

.list-file-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.list-file-info i {
    color: var(--primary-color);
    font-size: 16px;
    min-width: 16px;
}

.list-file-name {
    font-weight: 500;
    color: var(--text-primary);
}

.list-folder {
    color: var(--text-secondary);
    font-size: 13px;
}

.list-size {
    color: var(--text-muted);
    font-size: 12px;
    font-family: 'Monaco', 'Menlo', monospace;
}

.list-actions {
    display: flex;
    gap: 8px;
}

.list-action-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 12px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--border-radius-small);
    transition: var(--transition);
}

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

/* Tree View */
.tree-container {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 24px;
    height: 70vh;
}

.tree-sidebar {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-large);
    overflow-y: auto;
}

.tree-structure {
    padding: 20px;
}

.tree-folder {
    margin-bottom: 8px;
}

.tree-folder-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px;
    cursor: pointer;
    border-radius: var(--border-radius-small);
    transition: var(--transition);
    font-weight: 600;
    color: var(--primary-color);
}

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

.tree-folder-header.collapsed .tree-folder-icon {
    transform: rotate(-90deg);
}

.tree-folder-icon {
    transition: transform 0.3s ease;
}

.tree-files {
    margin-left: 20px;
    margin-top: 8px;
}

.tree-files.collapsed {
    display: none;
}

.tree-file {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 8px;
    cursor: pointer;
    border-radius: var(--border-radius-small);
    transition: var(--transition);
    font-size: 13px;
}

.tree-file:hover {
    background: var(--hover-color);
}

.tree-file.active {
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary-color);
}

.tree-content {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-large);
    overflow: hidden;
}

.file-preview {
    height: 100%;
    overflow-y: auto;
    padding: 20px;
}

.preview-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
}

.preview-placeholder i {
    font-size: 48px;
    margin-bottom: 16px;
}

.preview-content {
    display: none;
}

.preview-content.active {
    display: block;
}

.preview-content h1 {
    color: var(--primary-color);
    font-size: 24px;
    margin-bottom: 16px;
    border-bottom: 2px solid rgba(0, 212, 255, 0.3);
    padding-bottom: 8px;
}

.preview-content h2 {
    color: var(--text-primary);
    font-size: 20px;
    margin: 20px 0 12px 0;
}

.preview-content h3 {
    color: var(--text-primary);
    font-size: 18px;
    margin: 16px 0 8px 0;
}

.preview-content p {
    line-height: 1.6;
    margin-bottom: 12px;
    color: var(--text-secondary);
}

.preview-content code {
    background: rgba(0, 212, 255, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 13px;
}

.preview-content pre {
    background: rgba(0, 0, 0, 0.3);
    padding: 16px;
    border-radius: var(--border-radius);
    overflow-x: auto;
    margin: 12px 0;
    border: 1px solid var(--border-color);
}

.preview-content ul, .preview-content ol {
    margin-left: 20px;
    margin-bottom: 12px;
}

.preview-content blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: 16px;
    margin: 16px 0;
    opacity: 0.8;
    background: rgba(0, 212, 255, 0.05);
    padding: 16px;
    border-radius: var(--border-radius);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    backdrop-filter: blur(8px);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease-out;
}

.modal-content {
    background: var(--background-medium);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-large);
    width: 90%;
    max-width: 900px;
    max-height: 90%;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-large);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-color);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 18px;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--border-radius-small);
    transition: var(--transition);
}

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

.modal-body {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-file-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.03);
}

.file-path {
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 12px;
    color: var(--text-muted);
}

.file-actions {
    display: flex;
    gap: 8px;
}

.modal-content-area {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

/* Loading Overlay */
.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 15, 35, 0.95);
    z-index: 3000;
    backdrop-filter: blur(8px);
}

.loading-overlay.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.loading-spinner {
    text-align: center;
    color: var(--primary-color);
}

.loading-spinner i {
    font-size: 48px;
    margin-bottom: 16px;
}

.loading-spinner p {
    font-size: 16px;
    font-weight: 500;
}

/* Mobile Overlay */
.mobile-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
}

.mobile-overlay.active {
    display: block;
}

/* Notifications */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 12px 20px;
    border-radius: 8px;
    color: white;
    font-weight: 500;
    z-index: 10000;
    transform: translateX(400px);
    transition: transform 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.notification.success {
    background: linear-gradient(135deg, #10b981, #059669);
}

.notification.error {
    background: linear-gradient(135deg, #ef4444, #dc2626);
}

.notification.show {
    transform: translateX(0);
}

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    text-align: center;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state h3 {
    margin: 0 0 0.5rem 0;
    color: var(--text-primary);
}

.empty-state p {
    margin: 0;
    font-size: 0.9rem;
}

.folder-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background: var(--background-secondary);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.folder-header i.fa-chevron-down {
    transition: transform 0.2s ease;
}

.folder-files {
    margin-top: 0.5rem;
    margin-left: 1rem;
}

.tree-file {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.tree-file:hover {
    background: var(--background-secondary);
}

.tree-file.active {
    background: var(--primary-color);
    color: white;
}

/* File Preview */
.file-preview {
    height: 100%;
    overflow-y: auto;
    padding: 1rem;
}

.preview-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-secondary);
}

.preview-placeholder i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

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

.preview-header h3 {
    margin: 0 0 0.5rem 0;
    color: var(--text-primary);
}

.preview-header p {
    margin: 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.preview-content {
    line-height: 1.6;
}

/* Improved Mobile Responsiveness */
@media (max-width: 768px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .header-right {
        gap: 0.5rem;
    }

    .view-controls {
        display: none;
    }

    .quick-actions {
        grid-template-columns: 1fr;
    }

    .files-grid {
        grid-template-columns: 1fr;
    }

    .file-card {
        padding: 1rem;
    }

    .list-header {
        display: none;
    }

    .list-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
        padding: 1rem;
    }

    .tree-container {
        flex-direction: column;
    }

    .tree-sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .notification {
        right: 10px;
        left: 10px;
        transform: translateY(-100px);
    }

    .notification.show {
        transform: translateY(0);
    }
}

/* Custom utilities */
.text-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.d-none {
    display: none !important;
}

.d-block {
    display: block !important;
}

.opacity-50 {
    opacity: 0.5;
}

.cursor-pointer {
    cursor: pointer;
}

.user-select-none {
    user-select: none;
}