/* CSS Variables */
:root {
    --primary-color: #6FB3D9;
    --primary-hover: #5a9bc4;
    --danger-color: #ef4444;
    --danger-hover: #dc2626;
    --success-color: #22c55e;
    --warning-color: #f59e0b;

    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --bg-hover: #e5e7eb;

    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;

    --border-color: #e5e7eb;
    --border-radius: 8px;
    --border-radius-lg: 12px;

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

    --sidebar-width: 280px;
    --toolbar-height: 64px;

    --transition-fast: 150ms ease;
    --transition: 200ms ease;
    --transition-slow: 300ms ease;
}

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

html {
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-primary);
    background: var(--bg-secondary);
    overflow: hidden;
    height: 100vh;
    height: 100dvh;
}

/* App Layout */
#app {
    display: flex;
    height: 100vh;
    height: 100dvh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    overflow: hidden;
    transition: transform var(--transition-slow), width var(--transition-slow);
}

.sidebar.collapsed {
    width: 0;
    transform: translateX(-100%);
}

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

.app-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.app-logo {
    height: 28px;
    width: auto;
}

.sidebar-actions {
    padding: 16px 20px;
}

.sidebar-actions .btn {
    width: 100%;
    justify-content: center;
}

/* Folder Navigation */
.folder-nav {
    flex: 1;
    overflow-y: auto;
    padding: 8px 0;
}

.folder-section {
    margin-bottom: 16px;
}

.folder-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 20px;
}

.folder-section-header .folder-count {
    font-size: 11px;
}

.folder-section-title {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
    padding: 0;
}

.folder-section > .folder-section-title {
    padding: 8px 20px;
}

.folder-list {
    list-style: none;
}

.folder-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 20px;
    cursor: pointer;
    transition: background var(--transition-fast);
    user-select: none;
}

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

.folder-item.active {
    background: var(--bg-tertiary);
}

.folder-item.drag-over {
    background: rgba(99, 102, 241, 0.1);
    outline: 2px dashed var(--primary-color);
    outline-offset: -2px;
}

.folder-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.folder-icon img {
    width: 24px;
    height: 24px;
    object-fit: cover;
    border-radius: 4px;
}

.folder-icon.custom-color svg {
    fill: currentColor;
    stroke: currentColor;
}

.folder-name {
    flex: 1;
    font-size: 14px;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.folder-count {
    font-size: 12px;
    color: var(--text-tertiary);
    background: var(--bg-tertiary);
    padding: 2px 8px;
    border-radius: 10px;
}

.folder-menu-btn {
    opacity: 0;
    padding: 4px;
    margin-left: auto;
    color: var(--text-secondary);
    transition: opacity var(--transition-fast), color var(--transition-fast);
}

.folder-item:hover .folder-menu-btn,
.folder-item.active .folder-menu-btn {
    opacity: 1;
}

.folder-menu-btn:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

/* Always show menu button on touch devices */
@media (hover: none) {
    .folder-menu-btn {
        opacity: 1;
    }
}

/* Sidebar Footer */
.sidebar-footer {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
}

.sidebar-footer-buttons {
    display: flex;
    gap: 8px;
}

.sidebar-footer .btn {
    flex: 1;
    justify-content: center;
    font-size: 13px;
}

/* Storage Meter */
.storage-meter {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.storage-meter-header {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-secondary);
}

.storage-meter-header svg {
    flex-shrink: 0;
}

.storage-meter-label {
    flex-shrink: 0;
}

.storage-meter-value {
    margin-left: auto;
    font-weight: 500;
    color: var(--text-primary);
}

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

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

.storage-meter-fill.warning {
    background: var(--warning-color);
}

.storage-meter-fill.danger {
    background: var(--danger-color);
}

/* Settings Button */
.settings-btn {
    width: 100%;
    margin-top: 12px;
    justify-content: center;
    color: var(--text-secondary);
}

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

.btn-ghost {
    background: transparent;
    border: none;
}

/* Settings Modal Styles */
.settings-section {
    margin-bottom: 24px;
}

.settings-section-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.settings-description {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.5;
}

.cloudinary-status {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    margin-bottom: 16px;
}

.status-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--danger-color);
}

.status-indicator.enabled {
    background: var(--success-color);
}

.status-indicator.disabled {
    background: var(--text-tertiary);
}

.settings-actions {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.migrate-section {
    margin-top: 20px;
    padding-top: 20px;
}

.migrate-section h5 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
}

.migrate-progress {
    margin-top: 12px;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 8px;
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    border-radius: 4px;
    transition: width 0.3s ease;
    width: 0%;
}

#migrate-progress-text {
    font-size: 13px;
    color: var(--text-secondary);
}

.form-hint {
    display: block;
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 4px;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
}

/* Toolbar */
.toolbar {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 24px;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    height: var(--toolbar-height);
    flex-shrink: 0;
}

.toolbar-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.current-folder-title {
    font-family: 'Quicksand', sans-serif;
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
}

.toolbar-center {
    flex: 1;
    display: flex;
    justify-content: center;
    max-width: 480px;
    margin: 0 auto;
}

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

/* Search */
.search-container {
    display: flex;
    align-items: center;
    width: 100%;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 8px 12px;
    gap: 8px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-container:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.search-icon {
    color: var(--text-tertiary);
    flex-shrink: 0;
}

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

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

.filter-btn {
    padding: 4px;
}

.filter-btn.active {
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
}

/* View Toggle */
.view-toggle {
    display: flex;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 4px;
}

.view-toggle .btn-icon {
    padding: 6px 10px;
    border-radius: 4px;
}

.view-toggle .btn-icon.active {
    background: var(--bg-primary);
    box-shadow: var(--shadow-sm);
}

/* Sort Dropdown */
.sort-dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 4px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    min-width: 160px;
    z-index: 100;
    overflow: hidden;
}

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

.dropdown-item {
    display: block;
    width: 100%;
    padding: 10px 16px;
    text-align: left;
    font-size: 14px;
    color: var(--text-primary);
    background: none;
    border: none;
    cursor: pointer;
    transition: background var(--transition-fast);
}

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

.dropdown-item.active {
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
}

/* Bulk Selection Toolbar */
.bulk-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
    background: var(--primary-color);
    color: white;
    gap: 16px;
}

.bulk-toolbar.hidden {
    display: none;
}

.bulk-toolbar-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

#bulk-count {
    font-weight: 500;
}

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

.bulk-toolbar .btn {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: none;
}

.bulk-toolbar .btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.bulk-toolbar .danger-text {
    color: #fca5a5;
}

.bulk-toolbar .danger-text:hover {
    background: rgba(239, 68, 68, 0.3);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

/* Upload Progress */
.upload-progress {
    padding: 12px 24px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.upload-progress.hidden {
    display: none;
}

.upload-progress-header {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    margin-bottom: 8px;
}

.upload-progress-bar {
    height: 4px;
    background: var(--border-color);
    border-radius: 2px;
    overflow: hidden;
}

.upload-progress-fill {
    height: 100%;
    background: var(--primary-color);
    border-radius: 2px;
    transition: width 0.2s ease;
    width: 0%;
}

.upload-progress-current {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Sticker card selection state */
.sticker-card.selected {
    outline: 3px solid var(--primary-color);
    outline-offset: -3px;
}

.sticker-card .selection-checkbox {
    position: absolute;
    top: 8px;
    left: 8px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid var(--border-color);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 5;
    cursor: pointer;
    transition: all var(--transition-fast);
}

/* Only show checkbox in selection mode */
.selection-mode .sticker-card .selection-checkbox {
    display: flex;
}

.sticker-card.selected .selection-checkbox {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.sticker-card .selection-checkbox svg {
    opacity: 0;
}

.sticker-card.selected .selection-checkbox svg {
    opacity: 1;
}

.selection-mode .sticker-card .selection-checkbox:hover {
    border-color: var(--primary-color);
    transform: scale(1.1);
}

/* Filter Panel */
.filter-panel {
    padding: 16px 24px;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
}

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

.filter-section {
    margin-bottom: 16px;
}

.filter-section:last-of-type {
    margin-bottom: 12px;
}

.filter-section h3 {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.color-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.color-filter-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.color-filter-btn:hover {
    transform: scale(1.1);
}

.color-filter-btn.active {
    border-color: var(--text-primary);
    transform: scale(1.1);
}

.content-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.content-tag {
    padding: 6px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.content-tag:hover {
    background: var(--bg-hover);
}

.content-tag.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* Sticker Container */
.sticker-container {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    position: relative;
}

/* Drop Zone */
.drop-zone {
    position: absolute;
    inset: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.05);
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius-lg);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
    z-index: 10;
}

.drop-zone.active {
    opacity: 1;
    pointer-events: auto;
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
}

.drop-zone-content {
    text-align: center;
    color: var(--text-secondary);
}

.drop-zone-content svg {
    margin-bottom: 16px;
    color: var(--primary-color);
}

.drop-zone-content p {
    font-size: 16px;
    margin-bottom: 4px;
}

.drop-zone-hint {
    font-size: 13px;
    color: var(--text-tertiary);
}

/* Sticker Grid - Gallery View */
.sticker-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 16px;
}

.sticker-card {
    position: relative;
    aspect-ratio: 1;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.sticker-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.sticker-card.selected {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.sticker-card.dragging {
    opacity: 0.5;
}

.sticker-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 12px;
    background: repeating-conic-gradient(#f3f4f6 0% 25%, transparent 0% 50%) 50% / 20px 20px;
    /* Enable native drag on touch devices (iOS/iPad) */
    -webkit-user-drag: auto;
    -webkit-touch-callout: default;
}

.sticker-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding: 8px;
    opacity: 0;
    transition: opacity var(--transition-fast);
    pointer-events: none;
}

.sticker-overlay .btn-icon {
    pointer-events: auto;
}

.sticker-card:hover .sticker-overlay {
    opacity: 1;
}

.sticker-star {
    color: var(--text-tertiary);
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.sticker-star:hover {
    transform: scale(1.2);
}

.sticker-star.active {
    color: #fbbf24;
    fill: #fbbf24;
}

.sticker-menu-btn {
    color: var(--text-tertiary);
}

/* Sticker List - List View */
.sticker-container.list-view .sticker-grid {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sticker-container.list-view .sticker-card {
    aspect-ratio: unset;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 12px;
    border-radius: 6px;
}

.sticker-container.list-view .sticker-card:hover {
    transform: none;
}

.sticker-container.list-view .sticker-image {
    width: 48px;
    height: 48px;
    padding: 4px;
    border-radius: 4px;
    flex-shrink: 0;
}

.sticker-container.list-view .sticker-info {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 16px;
    min-width: 0;
}

.sticker-container.list-view .sticker-name {
    flex: 1;
    font-size: 14px;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sticker-container.list-view .sticker-meta {
    display: flex;
    align-items: center;
    gap: 24px;
    color: var(--text-tertiary);
    font-size: 13px;
}

.sticker-container.list-view .sticker-overlay {
    position: static;
    opacity: 1;
    padding: 0;
    gap: 8px;
}

.sticker-info,
.sticker-name,
.sticker-meta {
    display: none;
}

.sticker-container.list-view .sticker-info,
.sticker-container.list-view .sticker-name,
.sticker-container.list-view .sticker-meta {
    display: flex;
}

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 64px 24px;
    text-align: center;
    color: var(--text-tertiary);
}

.empty-state.hidden {
    display: none;
}

.empty-state svg {
    margin-bottom: 16px;
}

.empty-state h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

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

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

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

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    background: transparent;
    border: none;
    border-radius: var(--border-radius);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

/* Context Menu */
.context-menu {
    position: fixed;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    min-width: 180px;
    z-index: 1000;
    overflow: hidden;
}

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

.context-menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 10px 16px;
    text-align: left;
    font-size: 14px;
    color: var(--text-primary);
    background: none;
    border: none;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.context-menu-item:hover {
    background: var(--bg-hover);
}

.context-menu-item.danger {
    color: var(--danger-color);
}

.context-menu-item.danger:hover {
    background: rgba(239, 68, 68, 0.1);
}

.context-menu-divider {
    height: 1px;
    background: var(--border-color);
    margin: 4px 0;
}

.submenu {
    position: fixed;
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal.hidden {
    display: none;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
}

.modal-content {
    position: relative;
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 420px;
    max-height: 90vh;
    overflow: hidden;
}

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

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

.modal-body {
    padding: 20px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
}

/* Form Elements */
.form-group {
    margin-bottom: 16px;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-input {
    width: 100%;
    padding: 10px 12px;
    font-size: 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-primary);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary-color);
}

/* Color Picker */
.color-picker {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.color-option {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.color-option:hover {
    transform: scale(1.1);
}

.color-option.active {
    border-color: var(--text-primary);
}

.custom-color-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border: 2px dashed var(--border-color);
    color: var(--text-tertiary);
}

.custom-color-btn:hover {
    border-color: var(--text-tertiary);
    color: var(--text-secondary);
}

.custom-color-btn.has-color {
    border-style: solid;
}

.custom-color-input {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    padding: 0;
    overflow: hidden;
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.custom-color-input::-webkit-color-swatch-wrapper {
    padding: 0;
}

.custom-color-input::-webkit-color-swatch {
    border: none;
    border-radius: 50%;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 2000;
}

.toast {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--text-primary);
    color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    font-size: 14px;
    animation: slideIn var(--transition) ease;
}

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

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

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

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

/* Mobile Only */
.mobile-only {
    display: none;
}

/* Loading Spinner */
.loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* Selection */
::selection {
    background: rgba(99, 102, 241, 0.2);
}

/* Sticker Preview Modal */
.sticker-preview-modal .modal-content.preview-content {
    max-width: 600px;
    width: 95%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
}

.sticker-preview-modal .modal-close {
    position: absolute;
    top: 12px;
    right: 12px;
    z-index: 10;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
}

.preview-image-container {
    flex: 1;
    min-height: 200px;
    max-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: repeating-conic-gradient(#f3f4f6 0% 25%, transparent 0% 50%) 50% / 20px 20px;
}

.preview-image-container img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.preview-info {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
}

.preview-info h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    word-break: break-word;
}

.preview-meta {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--text-tertiary);
    margin-bottom: 12px;
}

.preview-colors {
    display: flex;
    gap: 6px;
    margin-bottom: 8px;
}

.preview-color-dot {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
}

.preview-tags-section {
    margin-top: 8px;
}

.preview-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 8px;
}

.preview-tags:empty {
    margin-bottom: 0;
}

.preview-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px 4px 10px;
    background: var(--bg-tertiary);
    border-radius: 12px;
    font-size: 12px;
    color: var(--text-secondary);
}

.preview-tag .remove-tag {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 14px;
    height: 14px;
    border: none;
    background: transparent;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 0;
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.preview-tag .remove-tag:hover {
    background: var(--danger-color);
    color: white;
}

.tag-input-container {
    display: flex;
    gap: 6px;
    align-items: center;
}

.tag-input {
    flex: 1;
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    font-size: 12px;
    background: var(--bg-primary);
    color: var(--text-primary);
    outline: none;
    transition: border-color var(--transition-fast);
}

.tag-input:focus {
    border-color: var(--primary-color);
}

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

.add-tag-btn {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    flex-shrink: 0;
}

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

.preview-actions {
    display: flex;
    gap: 12px;
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
}

.preview-actions .btn {
    flex: 1;
    justify-content: center;
}

.danger-text {
    color: var(--danger-color);
}

.danger-text:hover {
    background: rgba(239, 68, 68, 0.1);
}

/* Collection Cards (All Collections view) */
.collections-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.collection-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.collection-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.collection-preview {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2px;
    aspect-ratio: 1;
    background: var(--bg-tertiary);
    padding: 2px;
}

.collection-preview-item {
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.collection-preview-item img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 8px;
}

.collection-preview-empty {
    background: var(--bg-secondary);
}

.collection-info {
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.collection-color {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

.collection-details {
    flex: 1;
    min-width: 0;
}

.collection-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

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

/* List view for collections */
.sticker-container.list-view .collections-grid {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sticker-container.list-view .collection-card {
    display: flex;
    align-items: center;
    border-radius: var(--border-radius);
}

.sticker-container.list-view .collection-preview {
    width: 60px;
    height: 60px;
    aspect-ratio: unset;
    flex-shrink: 0;
}

.sticker-container.list-view .collection-info {
    flex: 1;
}

/* Sidebar show button (when collapsed) */
.show-sidebar-btn {
    position: fixed;
    left: 12px;
    top: 12px;
    z-index: 50;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    display: none;
}

.sidebar.collapsed ~ .main-content .show-sidebar-btn,
.show-sidebar-btn.visible {
    display: flex;
}

/* Search History Dropdown */
.search-history-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-top: 4px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    z-index: 100;
    max-height: 300px;
    overflow-y: auto;
}

.search-history-dropdown.hidden {
    display: none;
}

.search-history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-color);
    font-size: 12px;
    color: var(--text-tertiary);
}

.search-history-clear {
    background: none;
    border: none;
    color: var(--primary-color);
    cursor: pointer;
    font-size: 12px;
}

.search-history-clear:hover {
    text-decoration: underline;
}

.search-history-item {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 10px 12px;
    border: none;
    background: none;
    cursor: pointer;
    text-align: left;
    font-size: 14px;
    color: var(--text-primary);
    transition: background var(--transition-fast);
}

.search-history-item:hover {
    background: var(--bg-secondary);
}

.search-history-item svg {
    color: var(--text-tertiary);
    flex-shrink: 0;
}

/* Hidden utility class */
.hidden {
    display: none !important;
}

/* Similar stickers search */
.similar-clear-container {
    grid-column: 1 / -1;
    padding: 8px 0;
    margin-bottom: 8px;
}

.similar-clear-btn {
    display: inline-flex;
    gap: 6px;
}

.similarity-score {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: var(--primary-color);
    color: white;
    font-size: 10px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 10px;
    z-index: 5;
}

/* Swipe gesture indicators */
.sticker-card.swiping-left {
    background: linear-gradient(to left, rgba(239, 68, 68, 0.2), transparent 50%);
}

.sticker-card.swiping-right {
    background: linear-gradient(to right, rgba(251, 191, 36, 0.2), transparent 50%);
}

.swipe-indicator {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    padding: 8px;
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.2s;
    z-index: 10;
}

.swipe-indicator.left {
    right: 12px;
    background: var(--danger-color);
    color: white;
}

.swipe-indicator.right {
    left: 12px;
    background: #fbbf24;
    color: white;
}

.sticker-card.swiping-left .swipe-indicator.left,
.sticker-card.swiping-right .swipe-indicator.right {
    opacity: 1;
}

/* Long press preview tooltip */
.long-press-preview {
    position: fixed;
    z-index: 2000;
    max-width: 200px;
    max-height: 200px;
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 8px;
    pointer-events: none;
}

.long-press-preview img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

/* Export Format Dialog */
.export-format-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.export-format-btn {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    cursor: pointer;
    text-align: left;
    transition: all var(--transition);
}

.export-format-btn:hover {
    border-color: var(--primary-color);
    background: var(--bg-tertiary);
}

.export-format-btn svg {
    flex-shrink: 0;
    color: var(--text-secondary);
}

.export-format-btn:hover svg {
    color: var(--primary-color);
}

.export-format-btn .format-name {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.export-format-btn .format-desc {
    display: block;
    font-size: 12px;
    color: var(--text-secondary);
}

/* Import Collection Button (for sidebar) */
.import-collection-btn {
    width: 100%;
    text-align: left;
}

/* Advanced Filter Styles */
.date-filter-options,
.size-filter-options,
.dimension-filter-options {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 8px;
}

.date-filter-btn,
.size-filter-btn,
.dimension-filter-btn {
    padding: 6px 12px;
    font-size: 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    color: var(--text-secondary);
    transition: all var(--transition);
}

.date-filter-btn:hover,
.size-filter-btn:hover,
.dimension-filter-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.date-filter-btn.active,
.size-filter-btn.active,
.dimension-filter-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.custom-date-range {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    margin-top: 8px;
}

.custom-date-range span {
    color: var(--text-secondary);
    font-size: 12px;
}

.date-input {
    width: 130px;
    padding: 6px 8px;
    font-size: 12px;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

/* Filter badge count */
.filter-btn {
    position: relative;
}

.filter-btn.has-filters::after {
    content: '';
    position: absolute;
    top: 2px;
    right: 2px;
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
    border: 2px solid var(--bg-primary);
}

/* Active filter count display */
.active-filter-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    font-size: 11px;
    font-weight: 600;
    color: white;
    background: var(--primary-color);
    border-radius: 9px;
    margin-left: 4px;
}

/* Duplicate Dialog Styles */
.duplicate-dialog-content {
    max-width: 450px;
}

.duplicate-message {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.duplicate-comparison {
    display: flex;
    gap: 24px;
    justify-content: center;
}

.duplicate-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.duplicate-label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    padding: 4px 8px;
    border-radius: 4px;
}

.duplicate-item img {
    width: 120px;
    height: 120px;
    object-fit: contain;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.duplicate-name {
    font-size: 12px;
    color: var(--text-secondary);
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Export Dialog Styles */
.export-summary {
    font-size: 15px;
    color: var(--text-primary);
    line-height: 1.5;
}

.export-summary strong {
    color: var(--primary-color);
}

/* Companion Files Section */
.companion-files-section {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.form-hint {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 4px;
    margin-bottom: 12px;
}

.companion-file-slots {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.companion-file-slot {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
}

.companion-file-slot.has-file {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
}

.companion-file-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    color: var(--text-secondary);
    flex-shrink: 0;
}

.companion-file-slot.has-file .companion-file-icon {
    background: var(--primary-color);
    color: white;
}

.companion-file-info {
    flex: 1;
    min-width: 0;
}

.companion-file-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
}

.companion-file-name {
    display: block;
    font-size: 12px;
    color: var(--text-tertiary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.companion-file-slot.has-file .companion-file-name {
    color: var(--primary-color);
}

.companion-file-btn {
    flex-shrink: 0;
}

.companion-file-remove {
    flex-shrink: 0;
    color: var(--text-secondary);
    padding: 4px;
}

.companion-file-remove:hover {
    color: var(--danger-color);
}