.iw-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-2xl);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

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

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

.iw-file-stats {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.iw-sidebar-scroll {
    overflow-y: auto;
    max-height: calc(100vh - 130px);
}

.iw-cat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    user-select: none;
    padding: var(--space-xs) 0;
}

.iw-cat-header:hover {
    color: var(--color-primary);
}

.iw-cat-toggle {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--text-secondary);
    width: 20px;
    text-align: center;
}

.iw-sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.iw-sidebar-nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 6px var(--space-md);
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--text-primary);
    font-size: var(--text-sm);
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    transition: background-color 0.15s;
}

.iw-sidebar-nav-item:hover {
    background: var(--bg-light);
}

.iw-sidebar-nav-item.active {
    background: var(--color-primary);
    color: white;
}

.iw-sidebar-nav-item .iw-nav-icon {
    width: 18px;
    text-align: center;
    flex-shrink: 0;
    font-size: var(--text-sm);
}

.iw-content {
    padding: var(--space-2xl);
}

.iw-upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-4xl);
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background-color 0.2s;
    background: var(--bg-primary);
}

.iw-upload-zone:hover {
    border-color: var(--color-primary);
    background: var(--bg-light);
}

.iw-upload-zone.dragging {
    border-color: var(--color-primary);
    background: var(--bg-light);
}

.iw-upload-icon {
    font-size: 48px;
    margin-bottom: var(--space-md);
}

.iw-upload-text {
    color: var(--text-secondary);
    font-size: var(--text-md);
}

.iw-upload-text strong {
    color: var(--color-primary);
}

.iw-file-list {
    margin-top: var(--space-xl);
}

.iw-file-list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.iw-file-list-header h3 {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
}

.iw-file-table {
    width: 100%;
    border-collapse: collapse;
}

.iw-file-table th {
    text-align: left;
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    text-transform: uppercase;
    font-weight: var(--font-semibold);
    border-bottom: 2px solid var(--border-color);
}

.iw-file-table td {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-md);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.iw-file-table tr:hover td {
    background: var(--bg-light);
}

.iw-file-name {
    font-weight: var(--font-medium);
    word-break: break-all;
}

.iw-file-size {
    color: var(--text-secondary);
    white-space: nowrap;
}

.iw-file-type {
    color: var(--text-secondary);
}

.iw-tool-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    max-width: 600px;
}

.iw-tool-panel h3 {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-sm);
}

.iw-tool-desc {
    color: var(--text-secondary);
    font-size: var(--text-md);
    margin-bottom: var(--space-xl);
}

.iw-tool-row {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.iw-tool-row label {
    width: 160px;
    flex-shrink: 0;
    font-size: var(--text-md);
    font-weight: var(--font-medium);
    color: var(--text-primary);
}

.iw-tool-row input[type="number"],
.iw-tool-row input[type="text"] {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: var(--text-md);
    font-family: var(--font-primary);
}

.iw-tool-row select {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: var(--text-md);
    font-family: var(--font-primary);
    background: white;
    cursor: pointer;
}

.iw-tool-row input:disabled,
.iw-tool-row select:disabled {
    background: var(--bg-primary);
    color: var(--text-secondary);
}

.iw-range-group {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.iw-range-group input[type="range"] {
    flex: 1;
    height: 6px;
    accent-color: var(--color-primary);
    cursor: pointer;
}

.iw-range-value {
    min-width: 40px;
    text-align: right;
    font-size: var(--text-md);
    font-weight: var(--font-semibold);
    color: var(--color-primary);
    font-variant-numeric: tabular-nums;
}

.iw-color-group {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.iw-color-group input[type="color"] {
    width: 40px;
    height: 32px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 2px;
    cursor: pointer;
    background: white;
}

.iw-color-hex {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    font-family: monospace;
}

.iw-checkbox-row {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    padding-left: 172px;
}

.iw-checkbox-row input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-primary);
}

.iw-checkbox-row label {
    font-size: var(--text-md);
    color: var(--text-primary);
    cursor: pointer;
}

.iw-tool-actions {
    margin-top: var(--space-xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-color);
}

.iw-tool-actions-row {
    display: flex;
    gap: var(--space-md);
    align-items: center;
}

.iw-effect-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-4xl);
    color: rgba(255, 255, 255, 0.7);
}

.iw-effect-loading p {
    font-size: var(--text-md);
}

.iw-progress-bar {
    margin-top: var(--space-lg);
}

.iw-progress-track {
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    height: 8px;
    overflow: hidden;
    margin-bottom: var(--space-sm);
}

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

.iw-progress-text {
    display: flex;
    justify-content: space-between;
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.iw-progress-percent {
    font-weight: var(--font-semibold);
    color: var(--color-primary);
}

.iw-result-msg {
    margin-top: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    color: var(--color-primary);
    font-weight: var(--font-medium);
    text-align: center;
}

.iw-preview-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.iw-preview-container {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.iw-preview-image {
    max-width: 80vw;
    max-height: 75vh;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.iw-preview-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.15);
    border: none;
    color: white;
    font-size: 32px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
}

.iw-preview-nav:hover {
    background: rgba(255, 255, 255, 0.3);
}

.iw-preview-prev {
    left: -60px;
}

.iw-preview-next {
    right: -60px;
}

.iw-preview-close {
    position: absolute;
    top: -40px;
    right: -10px;
    background: none;
    border: none;
    color: white;
    font-size: 28px;
    cursor: pointer;
    padding: var(--space-sm);
}

.iw-preview-info {
    color: rgba(255, 255, 255, 0.7);
    margin-top: var(--space-md);
    font-size: var(--text-md);
    text-align: center;
}

.iw-preview-filename {
    color: white;
    font-weight: var(--font-medium);
}

.iw-empty-state {
    text-align: center;
    padding: var(--space-4xl) var(--space-2xl);
    color: var(--text-secondary);
}

.iw-empty-state-icon {
    font-size: 48px;
    margin-bottom: var(--space-lg);
}

.iw-empty-state h3 {
    font-size: var(--text-xl);
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.iw-btn-icon {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
}

@media (max-width: 768px) {
    .iw-toolbar {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .iw-checkbox-row {
        padding-left: 0;
    }

    .iw-tool-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .iw-tool-row label {
        width: auto;
    }

    .iw-range-group {
        width: 100%;
    }

    .iw-preview-prev {
        left: 10px;
    }

    .iw-preview-next {
        right: 10px;
    }

    .iw-upload-zone {
        padding: var(--space-2xl);
    }

    .iw-file-table th,
    .iw-file-table td {
        padding: var(--space-sm);
        font-size: var(--text-sm);
    }

    .iw-content {
        padding: var(--space-lg);
    }

    .iw-tool-panel {
        max-width: 100%;
    }

    .iw-tool-actions-row {
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .iw-toolbar {
        padding: var(--space-sm) var(--space-md);
    }

    .iw-content {
        padding: var(--space-lg);
    }

    .iw-tool-panel {
        padding: var(--space-lg);
    }

    .iw-tool-panel h3 {
        font-size: var(--text-lg);
    }

    .iw-tool-actions-row {
        flex-direction: column;
    }

    .iw-tool-actions-row .btn {
        width: 100%;
    }

    .iw-preview-image {
        max-width: 95vw;
    }
}