/* Upload Styles - Integrated */

.upload-column {
    padding-left: 12px;
}

/* Upload Area - Compact */
.upload-area {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius);
    padding: 32px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.15s ease;
    margin-bottom: 16px;
    background: var(--color-bg-secondary);
    min-height: 140px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.upload-area:hover {
    border-color: var(--color-primary);
    background: #F3F4F6;
}

.upload-area.dragging {
    border-color: var(--color-primary);
    background: #F3F4F6;
    transform: scale(0.98);
}

.upload-icon {
    font-size: 36px;
    margin-bottom: 12px;
}

.upload-area p {
    margin: 8px 0;
    color: var(--color-primary);
    font-size: 14px;
    font-weight: 500;
    line-height: 1.5;
    white-space: normal;
}

.upload-hint {
    font-size: 12px;
    color: var(--color-secondary);
    font-weight: 400;
    line-height: 1.4;
    white-space: normal;
}

/* Preview Grid - Compact */
.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 8px;
    max-height: 320px;
    overflow-y: auto;
}

.preview-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--color-bg-secondary);
    border: 2px solid var(--color-border);
    cursor: move;
    cursor: grab;
    transition: all 0.2s ease;
}

.preview-item:active {
    cursor: grabbing;
}

.preview-item.dragging {
    opacity: 0.5;
    transform: scale(0.95);
    border-color: var(--color-primary);
}

.preview-item.drag-over {
    border-color: var(--color-primary);
    border-style: solid;
    background: #E0F2FE;
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.preview-item .remove-btn {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border: none;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
    backdrop-filter: blur(4px);
    z-index: 10;
}

.preview-item .remove-btn:hover {
    background: rgba(0, 0, 0, 0.9);
    transform: scale(1.1);
}

.preview-item .image-order {
    position: absolute;
    bottom: 6px;
    left: 6px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 3px 8px;
    border-radius: 16px;
    font-size: 11px;
    font-weight: 600;
    backdrop-filter: blur(4px);
}

.preview-item .uploading-mask {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview-item .spinner {
    width: 28px;
    height: 28px;
    border: 3px solid var(--color-border);
    border-top: 3px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 10px;
}

/* Upload Progress */
.upload-progress {
    padding: 0 24px 20px;
}

.progress-bar {
    width: 100%;
    height: 4px;
    background: var(--color-border);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 10px;
}

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

#progressText {
    text-align: center;
    color: var(--color-secondary);
    font-size: 12px;
    font-weight: 500;
}

/* Responsive */
@media (max-width: 768px) {
    .upload-column {
        padding-left: 0;
    }

    .preview-grid {
        grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
        gap: 6px;
        max-height: 280px;
    }

    .upload-area {
        padding: 20px 16px;
    }

    .upload-icon {
        font-size: 28px;
    }

    .upload-area p {
        font-size: 13px;
    }

    .upload-hint {
        font-size: 11px;
    }
}

@media (max-height: 800px) {
    .upload-area {
        padding: 20px 16px;
        margin-bottom: 12px;
    }

    .upload-icon {
        font-size: 28px;
        margin-bottom: 8px;
    }

    .preview-grid {
        max-height: 240px;
        gap: 6px;
    }
}

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