Feature/improved signature element (#2489)

# Description

Please provide a summary of the changes, including relevant motivation
and context.

Closes #(issue_number)

## Checklist

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have performed a self-review of my own code
- [ ] I have attached images of the change if it is UI based
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] If my code has heavily changed functionality I have updated
relevant docs on [Stirling-PDFs doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
- [ ] My changes generate no new warnings
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

---------

Co-authored-by: Anthony Stirling <77850077+Frooodle@users.noreply.github.com>
Co-authored-by: Reece Browne <reece@stirling.pdf>

src/main/resources/static/css/add-image.css

@@ -2,22 +2,32 @@
   position: relative;
   margin: 20px 0;
 }
+
 #pdf-canvas {
   box-shadow: 0px 0px 8px rgba(0, 0, 0, 0.384);
   width: 100%;
 }
+
 .draggable-buttons-box {
-  position: absolute;
+  position: relative;
   top: 0;
   padding: 10px;
-  width: 100%;
+  width: calc(100% + 4.4rem);
   display: flex;
   gap: 5px;
+  z-index: 5;
+  margin-left: -2.2rem;
 }
-.draggable-buttons-box > button {
-  z-index: 10;
+
+.draggable-buttons-box>button {
+  z-index: 4;
   background-color: rgba(13, 110, 253, 0.1);
+  flex: 1 1 auto;
+  min-width: 2.5rem;
+  max-width: 4rem;
 }
+
+
 .draggable-canvas {
   border: 1px solid red;
   position: absolute;
@@ -26,3 +36,20 @@
   top: 0px;
   left: 0;
 }
+
+.input-with-icon {
+  position: relative;
+  display: inline-flex;
+  align-items: center;
+}
+
+.input-with-icon .icon {
+  position: absolute;
+  left: 0.5rem;
+  pointer-events: none;
+  color: #aaa;
+}
+
+.input-with-icon input {
+  padding-left: 2.2rem;
+}

src/main/resources/static/css/fileSelect.css

@@ -118,6 +118,7 @@
   row-gap: 1px;
   height: 60px;
   width: 60px;
+  top:4px;
 }
 
 .file-icon {
@@ -165,8 +166,8 @@
   height: 15px;
   width: 15px;
 
-  right: 10px;
-  top: -5px;
+  right: 0px;
+  top: -17px;
 }
 
 .remove-selected-file * {
@@ -219,3 +220,54 @@
   border-radius: 1rem;
   border: 1px solid rgb(105, 116, 134, 0.5);
 }
+
+.draggable-image-overlay{
+  position: absolute;
+  background: rgba(0, 0, 0, 0.7);
+  display: none;
+  z-index: 10;
+  align-items: center;
+  justify-content: center;
+  color: white;
+  font-size: 16px;
+  font-weight: bold;
+  pointer-events: none;
+  left:0;
+  top:0;
+  height:100%;
+  width:100%;
+  border-radius: 1rem;
+}
+
+.small-file-container:hover .drag-icon {
+  display: flex;
+}
+
+.drag-icon {
+  display: none;
+  position: absolute;
+  top: 5px;
+  width: 20px;
+  height: 20px;
+  background: rgba(0, 0, 0, 0.5);
+  color: white;
+  align-items: center;
+  justify-content: center;
+  border-radius: 50%;
+  font-size: 14px;
+  pointer-events: none;
+  z-index: 1;
+}
+
+#imagePreviewModal {
+  position: fixed;
+  top: 0;
+  left: 0;
+  width: 100vw;
+  height: 100vh;
+  background-color: rgba(0, 0, 0, 0.5);
+  display: none;
+  justify-content: center;
+  align-items: center;
+  z-index: 9999;
+}

src/main/resources/static/css/sign.css

@@ -22,18 +22,38 @@ select#font-select option {
 }
 
 .draggable-buttons-box {
-  position: absolute;
+  position: relative;
   top: 0;
   padding: 10px;
-  width: 100%;
+  width: calc(100% + 4.4rem);
   display: flex;
   gap: 5px;
   z-index: 5;
+  margin-left: -2.2rem;
 }
 
 .draggable-buttons-box>button {
   z-index: 4;
   background-color: rgba(13, 110, 253, 0.1);
+  flex: 1 1 auto;
+  min-width: 2.5rem;
+  max-width: 4rem;
+}
+
+
+.rotation-handle {
+  width: 20px;
+  height: 20px;
+  border: 2px solid #3498db;
+  background-color: rgba(52, 152, 219, 0.1);
+  color: white;
+  border-radius: 50%;
+  text-align: center;
+  line-height: 20px;
+  position: absolute;
+  cursor: grab;
+  top: -30px;
+  left: calc(50% - 10px);
 }
 
 .draggable-canvas {
@@ -113,3 +133,33 @@ select#font-select option {
   text-align: right;
   padding: 0.5rem 1rem;
 }
+
+.input-with-icon {
+  position: relative;
+  display: inline-flex;
+  align-items: center;
+}
+
+.input-with-icon .icon {
+  position: absolute;
+  left: 0.5rem;
+  pointer-events: none;
+  color: #aaa;
+}
+
+.input-with-icon input {
+  padding-left: 2.2rem;
+}
+
+.small-file-container-saved {
+  padding-top: 1px;
+  position: relative;
+  row-gap: 1px;
+  height: 60px;
+  width: 60px;
+  top: 4px;
+}
+
+.small-file-container-saved:hover .drag-icon {
+  display: flex;
+}