/* image-tool.css — Shared styles for all image processing tools */

/* Drop Zone */
.drop-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-3xl) var(--space-xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    background: var(--bg-secondary);
    min-height: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.drop-zone:hover,
.drop-zone.drag-over {
    border-color: var(--accent);
    background: rgba(88, 166, 255, 0.05);
}

.drop-zone-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

.drop-zone-text {
    font-size: var(--font-size-md);
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
    font-weight: 600;
}

.drop-zone-hint {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.drop-zone input[type="file"] {
    display: none;
}

/* Processing Overlay */
.processing-overlay {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    padding: var(--space-2xl);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    margin: var(--space-lg) 0;
}

.processing-overlay.active {
    display: flex;
}

.progress-bar {
    width: 100%;
    max-width: 400px;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 3px;
    transition: width 0.3s ease;
    width: 0%;
}

.processing-status {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-align: center;
}

.backend-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* Comparison Slider */
.comparison-container {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-md);
    cursor: ew-resize;
    user-select: none;
    -webkit-user-select: none;
    background: var(--bg-tertiary);
    max-width: 100%;
    margin: 0 auto;
}

.comparison-before,
.comparison-after {
    display: block;
    width: 100%;
    max-width: 100%;
}

.comparison-after-wrap {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    overflow: hidden;
    width: 50%;
}

.comparison-after {
    position: absolute;
    top: 0;
    left: 0;
    width: 200%;
    height: 100%;
    object-fit: contain;
}

.comparison-slider-line {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--accent);
    z-index: 10;
    pointer-events: none;
    left: 50%;
    transform: translateX(-50%);
}

.comparison-slider-handle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    background: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 14px;
    z-index: 11;
    pointer-events: none;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

/* Checkerboard */
.checkerboard-bg {
    background-image:
        linear-gradient(45deg, #808080 25%, transparent 25%),
        linear-gradient(-45deg, #808080 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #808080 75%),
        linear-gradient(-45deg, transparent 75%, #808080 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0;
    background-color: #666;
}

/* Result Container */
.result-container {
    display: none;
    flex-direction: column;
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

.result-container.visible {
    display: flex;
}

/* Control Groups */
.control-row {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-wrap: wrap;
    padding: var(--space-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.control-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    min-width: 140px;
    font-weight: 600;
}

.range-slider {
    flex: 1;
    max-width: 300px;
    accent-color: var(--accent);
}

.range-value {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    font-weight: 600;
    min-width: 40px;
}

/* Color Swatches */
.color-swatches {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.color-swatch {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    border: 2px solid var(--border);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.color-swatch:hover,
.color-swatch.selected {
    border-color: var(--accent);
    transform: scale(1.1);
    box-shadow: 0 2px 8px rgba(88, 166, 255, 0.3);
}

/* Gradient Presets */
.gradient-presets {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.gradient-preset-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
}

.gradient-preset {
    width: 80px;
    height: 50px;
    border-radius: var(--radius-sm);
    border: 2px solid var(--border);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.gradient-preset:hover,
.gradient-preset.selected {
    border-color: var(--accent);
    box-shadow: 0 2px 8px rgba(88, 166, 255, 0.3);
}

.gradient-preset-label {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    text-align: center;
}

/* Download Buttons Row */
.download-actions {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
    justify-content: center;
    padding: var(--space-lg) 0;
}

/* Image Preview */
.image-preview {
    max-width: 100%;
    max-height: 600px;
    object-fit: contain;
    border-radius: var(--radius-md);
    display: block;
    margin: 0 auto;
}

/* Batch Grid */
.batch-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-md);
}

.batch-item {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    text-align: center;
    background: var(--bg-secondary);
}

.batch-item img {
    max-width: 100%;
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-sm);
}

.batch-item .status {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

/* Radio Button Groups */
.radio-group {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.radio-label {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: var(--font-size-sm);
}

.radio-label:hover {
    border-color: var(--accent);
}

.radio-label input[type="radio"] {
    margin: 0;
}

.radio-label input[type="radio"]:checked + span,
.radio-label:has(input[type="radio"]:checked) {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* Error Message */
.error-message {
    padding: var(--space-lg);
    background: rgba(239, 68, 68, 0.1);
    border: 2px solid var(--error);
    border-radius: var(--radius-lg);
    color: var(--error);
    text-align: center;
    margin: var(--space-lg) 0;
}

/* Success Message */
.success-message {
    padding: var(--space-lg);
    background: rgba(34, 197, 94, 0.1);
    border: 2px solid var(--success);
    border-radius: var(--radius-lg);
    color: var(--success);
    text-align: center;
    margin: var(--space-lg) 0;
}

/* Responsive */
@media (max-width: 768px) {
    .drop-zone {
        padding: var(--space-xl) var(--space-md);
    }

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

    .control-label {
        min-width: auto;
    }

    .range-slider {
        width: 100%;
        max-width: none;
    }

    .comparison-container {
        max-height: 400px;
    }
}