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

:root {
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --transition-speed: 0.3s;
}

/* Theme Variables - Dark (Default) */
.dark-theme {
    --bg-primary: #1e1e1e;
    --bg-secondary: #252526;
    --bg-tertiary: #2d2d30;
    --bg-surface: #3e3e42;
    --bg-hover: #2a2d2e;
    --bg-active: #094771;
    
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --text-tertiary: #999999;
    
    --border-color: #464646;
    --border-light: #3e3e42;
    
    --accent-primary: #007acc;
    --accent-secondary: #0e639c;
    --accent-success: #107c10;
    --accent-warning: #ffb900;
    --accent-danger: #d13438;
    
    --shadow-color: rgba(0, 0, 0, 0.4);
    --shadow-light: rgba(0, 0, 0, 0.2);
}

/* Theme Variables - Light */
.light-theme {
    --bg-primary: #f3f3f3;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f8f8f8;
    --bg-surface: #ffffff;
    --bg-hover: #f0f0f0;
    --bg-active: #e6f4ff;
    
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-tertiary: #999999;
    
    --border-color: #dddddd;
    --border-light: #eeeeee;
    
    --accent-primary: #0078d4;
    --accent-secondary: #50a6ff;
    --accent-success: #107c10;
    --accent-warning: #ffb900;
    --accent-danger: #d13438;
    
    --shadow-color: rgba(0, 0, 0, 0.1);
    --shadow-light: rgba(0, 0, 0, 0.05);
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    height: 100vh;
    overflow: hidden;
}

#app {
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: background-color var(--transition-speed);
}

/* Toolbar Styles */
.toolbar {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 8px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
    height: 56px;
}

.toolbar-left,
.toolbar-center,
.toolbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-right: 16px;
}

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

.logo h1 {
    font-size: 18px;
    font-weight: 600;
    white-space: nowrap;
}

.separator {
    width: 1px;
    height: 24px;
    background-color: var(--border-color);
    margin: 0 8px;
}

.toolbar-btn {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 6px 12px;
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition-speed);
    white-space: nowrap;
}

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

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

.toolbar-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.toolbar-btn.icon-only {
    padding: 6px;
    aspect-ratio: 1;
}

.search-box {
    position: relative;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 4px 8px;
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 300px;
}

.search-box i {
    color: var(--text-tertiary);
    font-size: 14px;
}

.search-box input {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 14px;
    flex: 1;
    outline: none;
    min-width: 0;
}

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

.clear-search {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 2px;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.clear-search:hover {
    color: var(--text-primary);
}

.toolbar select {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 6px 8px;
    font-size: 14px;
    cursor: pointer;
    outline: none;
    min-width: 120px;
}

.toolbar select:hover {
    border-color: var(--accent-primary);
}

/* Main Content Layout */
.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Sidebar Styles */
.sidebar {
    width: 240px;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    padding: 16px 0;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    overflow-y: auto;
}

.sidebar-nav {
    list-style: none;
    padding: 0 8px;
}

.sidebar-header {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    padding: 8px 12px;
    letter-spacing: 0.5px;
}

.sidebar-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color var(--transition-speed);
    margin-bottom: 2px;
}

.sidebar-item i {
    color: var(--text-tertiary);
    width: 16px;
    text-align: center;
}

.sidebar-item span {
    font-size: 14px;
    color: var(--text-primary);
}

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

.sidebar-item.active {
    background-color: var(--bg-active);
}

.sidebar-item.active i {
    color: var(--accent-primary);
}

.sidebar-tree {
    flex: 1;
    padding: 16px 8px;
    overflow-y: auto;
}

.tree-item {
    padding: 4px 12px 4px 24px;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-radius: 4px;
    transition: background-color var(--transition-speed);
    position: relative;
}

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

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

.tree-item i {
    color: var(--text-tertiary);
    font-size: 12px;
}

.tree-item.folder i {
    color: #ffb900;
}

.tree-item.file i {
    color: var(--accent-primary);
}

.tree-toggle {
    position: absolute;
    left: 8px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    font-size: 10px;
    transition: transform var(--transition-speed);
}

.tree-toggle.collapsed {
    transform: translateY(-50%) rotate(-90deg);
}

.storage-info {
    padding: 16px 12px;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

.storage-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    font-size: 14px;
}

.storage-bar {
    height: 6px;
    background-color: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 4px;
}

.storage-fill {
    height: 100%;
    background-color: var(--accent-primary);
    border-radius: 3px;
    width: 0%;
    transition: width var(--transition-speed);
}

.storage-total {
    font-size: 12px;
    color: var(--text-tertiary);
    text-align: right;
}

/* File Area Styles */
.file-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.breadcrumb {
    padding: 12px 16px;
    background-color: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.breadcrumb a {
    color: var(--accent-primary);
    text-decoration: none;
    font-size: 14px;
    padding: 4px 8px;
    border-radius: 4px;
    transition: background-color var(--transition-speed);
}

.breadcrumb a:hover {
    background-color: var(--bg-hover);
    text-decoration: underline;
}

.breadcrumb a:not(:last-child)::after {
    content: "›";
    margin-left: 8px;
    color: var(--text-tertiary);
}

.files-container {
    flex: 1;
    padding: 16px;
    overflow-y: auto;
}

.view-toggle {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-light);
}

#viewModeLabel {
    font-weight: 600;
    font-size: 14px;
}

#itemCount {
    color: var(--text-tertiary);
    font-size: 13px;
}

/* Grid View */
.files-grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
}

.file-item {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-speed);
    position: relative;
    overflow: hidden;
}

.file-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-color);
    border-color: var(--accent-primary);
}

.file-item.selected {
    background-color: var(--bg-active);
    border-color: var(--accent-primary);
}

.file-icon {
    font-size: 48px;
    margin-bottom: 12px;
    color: var(--text-tertiary);
}

.file-icon.folder {
    color: #ffb900;
}

.file-icon.image {
    color: #4CAF50;
}

.file-icon.text {
    color: #2196F3;
}

.file-icon.audio {
    color: #9C27B0;
}

.file-icon.video {
    color: #F44336;
}

.file-name {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 4px;
    word-break: break-word;
    width: 100%;
}

.file-meta {
    font-size: 12px;
    color: var(--text-tertiary);
}

.file-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: 8px;
    justify-content: center;
}

.file-tag {
    background-color: var(--accent-primary);
    color: white;
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 10px;
}

.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 64px 32px;
    color: var(--text-tertiary);
}

.empty-state i {
    font-size: 64px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 20px;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.empty-state p {
    font-size: 14px;
}

/* List View */
.list-view .files-grid {
    grid-template-columns: 1fr;
    gap: 1px;
}

.list-view .file-item {
    flex-direction: row;
    text-align: left;
    padding: 12px 16px;
    border-radius: 0;
    border-left: none;
    border-right: none;
    border-top: none;
}

.list-view .file-item:hover {
    transform: none;
}

.list-view .file-icon {
    font-size: 24px;
    margin-bottom: 0;
    margin-right: 16px;
}

.list-view .file-info {
    flex: 1;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr auto;
    align-items: center;
    gap: 16px;
}

.list-view .file-name {
    margin-bottom: 0;
}

/* Right Panel */
.right-panel {
    width: 300px;
    background-color: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: transform var(--transition-speed);
}

.right-panel.collapsed {
    transform: translateX(100%);
}

.panel-header {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.panel-toggle {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    font-size: 14px;
    padding: 4px;
}

.panel-content {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

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

.preview-placeholder {
    text-align: center;
    padding: 32px 16px;
    color: var(--text-tertiary);
    background-color: var(--bg-tertiary);
    border-radius: 8px;
    border: 2px dashed var(--border-color);
}

.preview-placeholder i {
    font-size: 48px;
    margin-bottom: 12px;
    opacity: 0.5;
}

.preview-content {
    display: none;
}

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

.preview-image {
    max-width: 100%;
    border-radius: 4px;
    margin-bottom: 8px;
}

.preview-text {
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 12px;
    background-color: var(--bg-primary);
    padding: 12px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    max-height: 200px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

.metadata-section {
    border-top: 1px solid var(--border-color);
    padding-top: 16px;
}

.metadata-item {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
    font-size: 14px;
}

.metadata-item label {
    font-weight: 600;
    min-width: 80px;
    color: var(--text-secondary);
}

.metadata-value {
    flex: 1;
    color: var(--text-primary);
    word-break: break-word;
}

.edit-btn {
    background: none;
    border: none;
    color: var(--accent-primary);
    cursor: pointer;
    padding: 4px;
    font-size: 12px;
    margin-left: 8px;
}

.tags .metadata-value {
    flex-direction: column;
    align-items: flex-start;
}

.tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 4px;
}

.tag {
    background-color: var(--accent-primary);
    color: white;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.tag-remove {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 10px;
    padding: 0;
    opacity: 0.7;
}

.tag-remove:hover {
    opacity: 1;
}

.tag-input {
    display: flex;
    gap: 4px;
    margin-top: 4px;
}

.tag-input input {
    flex: 1;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 4px 8px;
    color: var(--text-primary);
    font-size: 12px;
}

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

.tag-input button {
    background-color: var(--accent-primary);
    color: white;
    border: none;
    border-radius: 4px;
    padding: 4px 8px;
    cursor: pointer;
    font-size: 12px;
}

.action-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin-top: 16px;
}

.action-btn {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 8px;
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    transition: all var(--transition-speed);
}

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

.action-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.action-btn i {
    font-size: 14px;
}

/* Status Bar */
.status-bar {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 8px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    flex-shrink: 0;
    height: 40px;
}

.status-left {
    display: flex;
    align-items: center;
    gap: 8px;
}

#selectedCount {
    color: var(--accent-primary);
    font-weight: 600;
}

#totalItems {
    color: var(--text-tertiary);
}

.status-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.status-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: all var(--transition-speed);
}

.status-btn:hover:not(:disabled) {
    background-color: var(--bg-hover);
    border-color: var(--accent-primary);
}

.status-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#currentPath {
    color: var(--text-tertiary);
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 11px;
}

/* Context Menu */
.context-menu {
    position: fixed;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-shadow: 0 4px 20px var(--shadow-color);
    z-index: 1000;
    min-width: 180px;
    display: none;
}

.context-menu ul {
    list-style: none;
    padding: 4px 0;
}

.context-menu li {
    padding: 8px 16px;
    font-size: 14px;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background-color var(--transition-speed);
}

.context-menu li:hover:not(.separator) {
    background-color: var(--bg-hover);
}

.context-menu li.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.context-menu li.separator {
    height: 1px;
    background-color: var(--border-color);
    margin: 4px 0;
    padding: 0;
    cursor: default;
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1001;
    backdrop-filter: blur(2px);
}

.modal {
    background-color: var(--bg-surface);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 32px var(--shadow-color);
    min-width: 400px;
    max-width: 500px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

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

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-tertiary);
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
}

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

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

.modal-body input,
.modal-body textarea,
.modal-body select {
    width: 100%;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 10px 12px;
    color: var(--text-primary);
    font-size: 14px;
    margin-bottom: 12px;
    transition: border-color var(--transition-speed);
}

.modal-body input:focus,
.modal-body textarea:focus,
.modal-body select:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.modal-body textarea {
    font-family: var(--font-family);
    resize: vertical;
}

.modal-body p {
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.setting-group {
    margin-bottom: 20px;
}

.setting-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-secondary);
}

#quotaSlider {
    width: 100%;
    margin: 8px 0;
}

#quotaValue {
    display: block;
    text-align: center;
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 4px;
}

.shortcuts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

.shortcut-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.shortcut-item kbd {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 4px 8px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 12px;
    color: var(--text-primary);
}

.shortcut-item span {
    font-size: 12px;
    color: var(--text-secondary);
}

.help-info {
    background-color: var(--bg-tertiary);
    padding: 12px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.help-info p {
    margin-bottom: 8px;
    font-size: 13px;
    line-height: 1.5;
}

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

.modal-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

.btn {
    padding: 8px 16px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all var(--transition-speed);
}

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

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

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

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

.btn.danger {
    background-color: var(--accent-danger);
    color: white;
    border-color: var(--accent-danger);
}

.btn.danger:hover {
    background-color: #c42b1f;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 60px;
    right: 20px;
    z-index: 1002;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 12px 16px;
    box-shadow: 0 4px 12px var(--shadow-color);
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 300px;
    max-width: 400px;
    animation: slideIn 0.3s ease;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.toast.hiding {
    transform: translateX(100%);
    opacity: 0;
}

.toast-icon {
    font-size: 20px;
}

.toast.success .toast-icon {
    color: var(--accent-success);
}

.toast.error .toast-icon {
    color: var(--accent-danger);
}

.toast.warning .toast-icon {
    color: var(--accent-warning);
}

.toast.info .toast-icon {
    color: var(--accent-primary);
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 2px;
}

.toast-message {
    font-size: 12px;
    color: var(--text-secondary);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .sidebar {
        width: 200px;
    }
    
    .right-panel {
        width: 280px;
    }
    
    .files-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    }
}

@media (max-width: 768px) {
    .toolbar {
        flex-wrap: wrap;
        height: auto;
        padding: 8px;
    }
    
    .toolbar-left,
    .toolbar-center,
    .toolbar-right {
        width: 100%;
        justify-content: center;
        margin-bottom: 8px;
    }
    
    .toolbar-center {
        order: 3;
    }
    
    .search-box {
        min-width: 200px;
    }
    
    .sidebar {
        width: 60px;
        padding: 8px 0;
    }
    
    .sidebar-nav span,
    .sidebar-header,
    .tree-item span,
    .storage-info span:first-child,
    .storage-total {
        display: none;
    }
    
    .sidebar-nav {
        padding: 0;
    }
    
    .sidebar-item {
        justify-content: center;
        padding: 12px;
    }
    
    .tree-item {
        padding: 8px;
        justify-content: center;
    }
    
    .tree-toggle {
        display: none;
    }
    
    .right-panel {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        width: 100%;
        z-index: 999;
    }
    
    .files-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
    
    .modal {
        min-width: 90%;
        margin: 16px;
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 16px;
    }
    
    .toolbar-btn span:not(.icon-only) {
        display: none;
    }
    
    .toolbar-btn:not(.icon-only) i {
        margin-right: 0;
    }
    
    .files-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }
}