fix(server): polish home bulk-action & upload UI/UX

src/anthias_server/app/static/sass/_styles.scss

@@ -908,10 +908,23 @@ label { text-align: left; }
     font-size: 0.9rem;
     margin: 0 0 var(--space-3);
   }
-  a {
+  // The call-to-action is an action (opens the Add modal), not
+  // navigation, so it's a <button> styled as a link.
+  a,
+  .empty-state__action {
+    font: inherit;
     font-weight: 600;
+    padding: 0;
+    border: none;
+    background: none;
+    cursor: pointer;
     color: var(--surface-anchor);
     &:hover { color: var(--surface-anchor-hover); }
+    &:focus-visible {
+      outline: none;
+      border-radius: var(--radius-sm);
+      box-shadow: 0 0 0 var(--ring-width) var(--color-focus-ring);
+    }
   }
 }
 
@@ -939,7 +952,15 @@ label { text-align: left; }
   width: 100%;
   max-width: 720px;
   margin: auto;
-  overflow: hidden;
+  // Cap the card to the viewport (minus the overlay's space-5 padding
+  // top + bottom) and scroll inside it, so a tall modal — the
+  // bulk-edit form with every group expanded, or the Edit modal with
+  // the failure alert + Advanced open — never pushes its footer below
+  // the fold. The header/footer pin via position: sticky so the title
+  // and the Save/Apply buttons stay reachable while the body scrolls.
+  // (overflow-y: auto still clips children to the rounded corners.)
+  max-height: calc(100vh - var(--space-5) * 2);
+  overflow-y: auto;
   color: var(--color-text);
   animation: modal-in 220ms var(--ease-out) both;
 }
@@ -954,6 +975,13 @@ label { text-align: left; }
 .modal-card__header {
   padding: var(--space-5) var(--space-6);
   border-bottom: 1px solid var(--color-border);
+  // Pin to the top of the scrolling card so the title + close button
+  // stay put while a tall body scrolls underneath. Opaque background
+  // so scrolled content doesn't bleed through.
+  position: sticky;
+  top: 0;
+  z-index: 2;
+  background: var(--color-surface);
   display: flex;
   // Top-aligned across every modal: only the preview modal can carry
   // a long title (the asset name), but `flex-start` is also fine for
@@ -1030,6 +1058,11 @@ label { text-align: left; }
   padding: var(--space-4) var(--space-6);
   border-top: 1px solid var(--color-border);
   background: var(--color-surface-soft);
+  // Pin to the bottom of the scrolling card so Save / Apply / Cancel
+  // stay reachable no matter how tall the body grows.
+  position: sticky;
+  bottom: 0;
+  z-index: 2;
   display: flex;
   align-items: center;
   justify-content: flex-end;
@@ -2187,7 +2220,11 @@ body.auth-body {
   background: var(--color-surface-tint);
   transition: border-color var(--t-fast), background var(--t-fast);
 
-  &:hover {
+  // The dashed border + cloud icon read as "drop files here", so the
+  // zone now accepts drops (dropFiles() in home.ts). Mirror the hover
+  // treatment while a drag is over it for feedback.
+  &:hover,
+  &.is-dragover {
     border-color: var(--color-link);
     background: #ece4f5;
   }
@@ -2444,15 +2481,27 @@ body.auth-body {
   color: var(--color-text-on-dark);
   background: transparent;
   border-color: var(--color-border-on-dark);
+  // Set the utility "clear" apart from the destructive Delete it sits
+  // beside in the action row.
+  margin-left: var(--space-2);
 }
 
 @media (max-width: 640px) {
   .bulk-bar__inner {
     flex-direction: column;
     align-items: stretch;
     border-radius: var(--radius-lg);
+    // Anchor the clear (×) to the top-right corner so it doesn't wrap
+    // onto a second row right next to the red Delete (mis-tap risk).
+    position: relative;
   }
   .bulk-bar__actions { justify-content: center; }
+  .bulk-bar__clear {
+    position: absolute;
+    top: var(--space-3);
+    right: var(--space-3);
+    margin-left: 0;
+  }
 }
 
 // Bulk-edit modal: each schedule field group is a card whose body is
@@ -2471,3 +2520,35 @@ body.auth-body {
   }
 }
 .bulk-field__toggle { cursor: pointer; }
+
+// Reserve room at the bottom of the page while a selection is active so
+// the fixed bulk bar never covers the last rows or their action
+// buttons (it floats over them otherwise, blocking clicks on the very
+// assets a bulk selection targets). Bound to `selectedIds.length` in
+// home.html. The bar is taller when stacked on phones, hence the bump.
+.app-container.has-bulk-selection {
+  padding-bottom: 7rem;
+  @media (max-width: 640px) { padding-bottom: 11rem; }
+}
+
+// Selection checkboxes on the dark Enabled surface. The default
+// white-fill, faint-border checkbox and its purple checked/indeterminate
+// fill nearly vanish against the purple gradient — lift the border and
+// give the box a translucent-white ground so it reads as a control and
+// its state is legible. Scoped to .asset-select so the per-row activity
+// switch (also an .app-check-input) keeps its own track styling.
+.surface--active .asset-select .app-check-input {
+  border-color: rgba(255, 255, 255, 0.5);
+  background-color: rgba(255, 255, 255, 0.1);
+
+  &:checked,
+  &:indeterminate { border-color: rgba(255, 255, 255, 0.75); }
+}
+
+// Stack the ffmpeg recipe's copy button under the (horizontally
+// scrolling) command on narrow widths, instead of squeezing the code to
+// a thin strip beside it.
+@media (max-width: 480px) {
+  .modal-alert__recipe { flex-direction: column; }
+  .modal-alert__copy { align-self: stretch; }
+}

src/anthias_server/app/static/src/home.ts

@@ -51,6 +51,7 @@
   uploadFileName: string
   uploadIndex: number
   uploadTotal: number
+  dragActive: boolean
   // Bulk selection / actions (#3046)
   selectedIds: string[]
   visibleIds: Record<SectionKey, string[]>
@@ -65,6 +66,7 @@
   closePreview(): void
   bindFlatpickr(): void
   uploadFiles(input: HTMLInputElement): Promise<void>
+  dropFiles(event: DragEvent): void
   uploadOne(url: string, csrf: string, file: File): Promise<UploadResult>
   // Bulk selection helpers
   isSelected(id: string): boolean
@@ -126,6 +128,7 @@
     uploadFileName: '',
     uploadIndex: 0,
     uploadTotal: 0,
+    dragActive: false,
     selectedIds: [],
     visibleIds: { active: [], inactive: [] },
     bulkEditOpen: false,
@@ -239,6 +242,11 @@
       // anyway.
       this.mode = null
       this.editAsset = null
+      // Clear any leftover drag highlight: dragging into the dropzone and
+      // then closing the modal (Esc/backdrop/Cancel) before dragleave
+      // fires would otherwise leave dragActive true, so the dropzone
+      // re-opens still highlighted.
+      this.dragActive = false
       if (!this.uploadState) {
         this.uploadProgress = 0
         this.uploadFileName = ''
@@ -398,6 +406,21 @@
       }
     },
 
+    // Drag-and-drop entry point for the dropzone. Assigns the dropped
+    // FileList to the hidden <input> (so input.form / re-select still
+    // behave) and runs it through the same sequential uploadFiles()
+    // batch path the input's change event uses.
+    dropFiles(event: DragEvent) {
+      const dropped = event.dataTransfer?.files
+      if (!dropped || !dropped.length || this.uploadState) return
+      const input = document.getElementById(
+        'add-file',
+      ) as HTMLInputElement | null
+      if (!input) return
+      input.files = dropped
+      void this.uploadFiles(input)
+    },
+
     // POST a single file and resolve an UploadResult: 'ok' on a 2xx
     // with no error toast, 'rejected' on a 2xx carrying an error toast
     // (server refused the file), 'error' on a non-2xx or transport

src/anthias_server/app/templates/_asset_modal.html

@@ -84,11 +84,19 @@ <h2 x-text="mode === 'edit' ? 'Edit asset' : 'Add asset'"></h2>
       >
         {% csrf_token %}
         <div class="modal-card__body" style="padding-top: 0">
+          {% comment %} The dashed dropzone reads as a drop target, so it
+             accepts drops as well as clicks. dropFiles() hands the
+             dropped FileList to the same uploadFiles() batch path the
+             <input>'s change event uses. {% endcomment %}
           <label
             for="add-file"
             class="upload-dropzone"
-            :class="{ 'is-disabled': uploadState }"
+            :class="{ 'is-disabled': uploadState, 'is-dragover': dragActive }"
             x-show="!uploadState"
+            @dragover.prevent
+            @dragenter.prevent="dragActive = true"
+            @dragleave.self.prevent="dragActive = false"
+            @drop.prevent="dragActive = false; dropFiles($event)"
           >
             <i class="ti ti-cloud-upload" style="font-size: 2.25rem; opacity: 0.55"></i>
             <p class="mb-1 font-semibold mt-2">Click to choose files</p>

src/anthias_server/app/templates/_bulk_edit_modal.html

@@ -72,7 +72,7 @@ <h2>Edit
             </label>
             <div class="mt-3" x-show="applyDuration" x-cloak>
               <div class="app-floating">
-                <input type="number" class="app-input" id="bulk-duration" name="duration" min="0" step="1" placeholder="e.g. 10" required :disabled="!applyDuration">
+                <input type="number" class="app-input" id="bulk-duration" name="duration" min="0" step="1" required :disabled="!applyDuration">
                 <label for="bulk-duration">Duration (seconds)</label>
               </div>
               <p class="modal-section__hint mt-2 mb-0">

src/anthias_server/app/templates/_empty_assets.html

@@ -10,7 +10,7 @@
     {% else %}Assets you toggle off — or that haven't been enabled yet — appear here.
     {% endif %}
   </p>
-  <a href="#" @click.prevent="openAdd()">
+  <button type="button" class="empty-state__action" @click="openAdd()">
     <i class="ti ti-plus mr-1"></i>Add an asset
-  </a>
+  </button>
 </div>

src/anthias_server/app/templates/home.html

@@ -8,7 +8,7 @@
 {% endblock %}
 
 {% block main %}
-<div class="app-container" x-data="homeApp()" @asset-saved.window="closeModal()" @bulk-done.window="onBulkDone($event)">
+<div class="app-container" :class="{ 'has-bulk-selection': selectedIds.length }" x-data="homeApp()" @asset-saved.window="closeModal()" @bulk-done.window="onBulkDone($event)">
   <div class="page-header-bar">
     <div class="page-header-bar__title">
       <h1 class="page-header">Schedule Overview</h1>