feat(ui): modernize add download window

src/components/AddDownloadsModal.tsx

@@ -687,15 +687,30 @@ export const AddDownloadsModal = () => {
     icon: LucideIcon;
     color: string;
   }) => (
-    <div className="flex flex-col bg-bg-input/50 border border-border-modal/40 rounded-lg p-2.5 shadow-sm">
+    <div className="add-download-summary-card flex flex-col">
       <div className="flex items-center gap-1.5 text-text-muted mb-1">
         <Icon size={12} className={color} />
-        <span className="text-[10px] font-bold uppercase tracking-wider">{title}</span>
+        <span className="text-[10px] font-semibold uppercase tracking-wider">{title}</span>
       </div>
       <span className="text-sm font-semibold text-text-primary truncate">{value}</span>
     </div>
   );
 
+  const selectMediaFormat = (index: number) => {
+    if (selectedItemIndex === null) return;
+    const newItems = [...parsedItems];
+    const selectedItem = newItems[selectedItemIndex];
+    const format = selectedItem?.formats?.[index];
+    if (!selectedItem || !format) return;
+
+    selectedItem.selectedFormat = index;
+    selectedItem.size = format.detail || 'Unknown';
+    selectedItem.sizeBytes = format.bytes || 0;
+    const baseName = selectedItem.file.substring(0, selectedItem.file.lastIndexOf('.')) || selectedItem.file;
+    selectedItem.file = `${baseName}.${format.ext}`;
+    setParsedItems(newItems);
+  };
+
   const requiredBytes = parsedItems.reduce((acc, item) => acc + (item.sizeBytes || 0), 0);
   const requiredStr = requiredBytes > 0
     ? (requiredBytes < 1024 * 1024 ? `${(requiredBytes / 1024).toFixed(1)} KB`
@@ -716,24 +731,24 @@ export const AddDownloadsModal = () => {
         />
       )}
     <div className="app-modal-backdrop fixed inset-0 z-50 flex items-center justify-center">
-      <div className="app-modal w-[900px] h-[650px] flex flex-col overflow-hidden text-sm">
+      <div className="app-modal add-download-modal w-[900px] h-[650px] flex flex-col overflow-hidden text-sm">
 
         {/* Main Content Split */}
         <div className="flex flex-1 overflow-hidden">
 
           {/* Left Column: URLs and Preview */}
-          <div className="w-[55%] border-r border-border-modal flex flex-col bg-main-bg/50">
-            <div className="p-5 flex-1 flex flex-col gap-5">
+          <div className="add-download-left w-[55%] border-r border-border-modal flex flex-col">
+            <div className="add-download-pane p-5 flex-1 flex flex-col gap-5">
 
               <div className="flex flex-col gap-2">
                 <div className="flex items-center justify-between">
-                  <div className="flex items-center gap-2 text-text-primary font-semibold">
+                  <div className="add-download-section-title flex items-center gap-2">
                     <Link size={16} className="text-blue-500" />
                     Download Links
                   </div>
                 </div>
                 <textarea
-                  className="w-full h-32 bg-bg-input/80 border border-border-modal rounded-lg p-3 text-[13px] text-text-primary focus:outline-none focus:border-accent resize-none font-mono shadow-inner transition-colors"
+                  className="add-download-control add-download-links-input w-full h-32 p-3 text-[13px] resize-none font-mono"
                   placeholder="Paste HTTP, HTTPS, FTP, or SFTP URLs here..."
                   value={urls}
                   onChange={(e) => setUrls(e.target.value)}
@@ -743,7 +758,7 @@ export const AddDownloadsModal = () => {
                     <button
                       type="button"
                       onClick={() => setMetadataRefreshNonce(value => value + 1)}
-                      className="flex items-center gap-1.5 text-[11px] text-blue-500 hover:text-blue-400 font-medium"
+                      className="add-download-link-button flex items-center gap-1.5 text-[11px] font-medium"
                     >
                       <RefreshCw size={12} /> Refresh Metadata
                     </button>
@@ -758,19 +773,19 @@ export const AddDownloadsModal = () => {
               </div>
 
               <div className="flex flex-col gap-2 flex-1 overflow-hidden">
-                <div className="flex items-center gap-2 text-text-primary font-semibold">
+                <div className="add-download-section-title flex items-center gap-2">
                   <ArrowRight size={16} className="text-blue-500" />
                   Preview
                 </div>
-                <div className="flex-1 border border-border-modal rounded-lg overflow-hidden bg-bg-input/30 flex flex-col">
-                  <div className="bg-sidebar-bg/50 border-b border-border-modal px-3 py-2 flex text-[11px] font-semibold text-text-muted uppercase tracking-wider">
+                <div className="add-download-preview flex-1 overflow-hidden flex flex-col">
+                  <div className="add-download-preview-header px-3 py-2 flex text-[11px] font-semibold text-text-muted uppercase tracking-wider">
                     <div className="flex-[2]">File</div>
                     <div className="flex-1">Size</div>
                     <div className="flex-[1.5]">Status</div>
                   </div>
-                  <div className="flex-1 overflow-y-auto p-2 space-y-1">
+                  <div className="flex-1 overflow-y-auto p-2 space-y-1" role="listbox" aria-label="Download preview">
                     {parsedItems.length === 0 ? (
-                      <div className="h-full flex items-center justify-center text-text-muted text-xs italic">
+                      <div className="add-download-empty h-full flex items-center justify-center text-text-muted text-xs">
                         No links added yet.
                       </div>
                     ) : (
@@ -778,10 +793,19 @@ export const AddDownloadsModal = () => {
                         <div
                           key={i}
                           onClick={() => setSelectedItemIndex(i)}
-                          className={`flex flex-col text-xs px-2 py-2 cursor-pointer rounded-md transition-all group ${
+                          onKeyDown={(event) => {
+                            if (event.key === 'Enter' || event.key === ' ') {
+                              event.preventDefault();
+                              setSelectedItemIndex(i);
+                            }
+                          }}
+                          role="option"
+                          aria-selected={selectedItemIndex === i}
+                          tabIndex={0}
+                          className={`add-download-preview-row flex flex-col text-xs px-2 py-2 cursor-pointer rounded-md group ${
                             selectedItemIndex === i
-                              ? 'bg-blue-500/10 border border-blue-500/30 shadow-sm'
-                              : 'hover:bg-item-hover border border-transparent'
+                              ? 'is-selected border'
+                              : 'border border-transparent'
                           }`}
                         >
                           <div className="flex items-center w-full">
@@ -808,16 +832,16 @@ export const AddDownloadsModal = () => {
           </div>
 
           {/* Right Column: Settings */}
-          <div className="w-[45%] flex flex-col overflow-y-auto bg-bg-modal">
-            <div className="p-6 space-y-7">
+          <div className="add-download-settings w-[45%] flex flex-col overflow-y-auto">
+            <div className="p-6 space-y-5">
 
               {/* Media Format (Dynamic) */}
               {selectedItemIndex !== null && parsedItems[selectedItemIndex]?.isMedia && (
-                <section className="app-card relative overflow-hidden p-4">
+                <section className="add-download-section add-download-media-section relative overflow-hidden p-4">
                   <div className="absolute top-0 right-0 p-2 opacity-10">
                     <Video size={48} />
                   </div>
-                  <div className="flex items-center gap-2 text-sm font-semibold text-text-primary mb-3 relative z-10">
+                  <div className="add-download-section-title flex items-center gap-2 mb-3 relative z-10">
                     <Video size={16} className="text-purple-500" /> Media Format
                   </div>
 
@@ -830,25 +854,25 @@ export const AddDownloadsModal = () => {
                     <div className="space-y-3 relative z-10">
                       <div className="flex flex-col gap-1.5">
                         <label className="text-[10px] uppercase font-bold tracking-wider text-text-muted">Available Streams</label>
-                        <div className="flex flex-col gap-1 max-h-48 overflow-y-auto pr-1">
+                        <div className="flex flex-col gap-1 max-h-48 overflow-y-auto pr-1" role="radiogroup" aria-label="Available media streams">
                           {parsedItems[selectedItemIndex].formats!.map((f, idx) => {
                           const isSelected = parsedItems[selectedItemIndex].selectedFormat === idx;
                           const Icon = f.type === 'Audio' ? Music : Film;
                           return (
                             <div
                               key={idx}
-                              onClick={() => {
-                                const newItems = [...parsedItems];
-                                newItems[selectedItemIndex].selectedFormat = idx;
-                                newItems[selectedItemIndex].size = f.detail || 'Unknown';
-                                newItems[selectedItemIndex].sizeBytes = f.bytes || 0;
-                                // Update filename extension
-                                const baseName = newItems[selectedItemIndex].file.substring(0, newItems[selectedItemIndex].file.lastIndexOf('.')) || newItems[selectedItemIndex].file;
-                                newItems[selectedItemIndex].file = `${baseName}.${f.ext}`;
-                                setParsedItems(newItems);
+                              onClick={() => selectMediaFormat(idx)}
+                              onKeyDown={(event) => {
+                                if (event.key === 'Enter' || event.key === ' ') {
+                                  event.preventDefault();
+                                  selectMediaFormat(idx);
+                                }
                               }}
-                              className={`flex items-center justify-between px-3 py-2 rounded-lg cursor-pointer text-xs border transition-all ${
-                                isSelected ? 'bg-purple-500/10 border-purple-500/30 text-purple-600 dark:text-purple-400 font-semibold shadow-sm' : 'bg-bg-input border-border-modal text-text-secondary hover:border-border-modal/80 hover:bg-item-hover/50'
+                              role="radio"
+                              aria-checked={isSelected}
+                              tabIndex={0}
+                              className={`add-download-format-row flex items-center justify-between px-3 py-2 cursor-pointer text-xs border ${
+                                isSelected ? 'is-selected text-purple-600 dark:text-purple-400 font-semibold' : 'text-text-secondary'
                               }`}
                             >
                               <div className="flex items-center gap-2 min-w-0">
@@ -874,8 +898,8 @@ export const AddDownloadsModal = () => {
               )}
 
               {/* Save Location */}
-              <section>
-                <div className="flex items-center gap-2 text-sm font-semibold text-text-primary mb-3">
+              <section className="add-download-section">
+                <div className="add-download-section-title flex items-center gap-2 mb-3">
                   <FolderPlus size={16} className="text-blue-500" /> Save Location
                 </div>
                 <div className="flex gap-2">
@@ -883,11 +907,12 @@ export const AddDownloadsModal = () => {
                     type="text"
                     readOnly
                     value={saveLocation}
-                    className="flex-1 bg-bg-input border border-border-modal rounded-md px-3 py-1.5 text-xs text-text-muted font-mono"
+                    className="add-download-control flex-1 px-3 py-1.5 text-xs text-text-muted font-mono"
+                    aria-label="Save location"
                   />
                   <button
                     onClick={handleBrowse}
-                    className="bg-item-hover hover:bg-item-hover/80 text-text-primary border border-border-modal px-3 py-1.5 rounded-md text-xs font-medium transition-colors"
+                    className="add-download-button add-download-button-secondary px-3 text-xs font-medium"
                   >
                     Browse
                   </button>
@@ -895,14 +920,14 @@ export const AddDownloadsModal = () => {
               </section>
 
               {/* Transfer Settings */}
-              <section>
-                <div className="flex items-center gap-2 text-sm font-semibold text-text-primary mb-3">
+              <section className="add-download-section">
+                <div className="add-download-section-title flex items-center gap-2 mb-3">
                   <Settings size={16} className="text-blue-500" /> Transfer Settings
                 </div>
                   <div className="flex flex-col gap-3">
                     <div className="flex items-center justify-between">
                       <label className="text-xs text-text-secondary font-medium">Target Queue</label>
-                      <select value={selectedQueueId} onChange={e=>setSelectedQueueId(e.target.value)} className="w-32 bg-bg-input border border-border-modal rounded-lg px-2 py-1 text-xs text-text-primary focus:border-accent focus:outline-none">
+                      <select value={selectedQueueId} onChange={e=>setSelectedQueueId(e.target.value)} className="add-download-control add-download-select w-32 px-2 py-1 text-xs" aria-label="Target queue">
                         {queues.map(q => (
                           <option key={q.id} value={q.id}>{q.name}</option>
                         ))}
@@ -912,19 +937,19 @@ export const AddDownloadsModal = () => {
                     <div className="flex items-center justify-between">
                       <label className="text-xs text-text-secondary font-medium">Connections per File</label>
                     <div className="flex items-center gap-2">
-                      <input type="range" min="1" max="16" value={connections} onChange={e=>setConnections(Number(e.target.value))} className="w-24 accent-blue-500" disabled={parsedItems.some(i => i.isMedia)} />
-                      <span className="text-xs text-text-primary font-mono w-4 text-right">{connections}</span>
+                      <input type="range" min="1" max="16" value={connections} onChange={e=>setConnections(Number(e.target.value))} className="add-download-range w-24" disabled={parsedItems.some(i => i.isMedia)} aria-label="Connections per file" />
+                      <span className="add-download-value text-xs text-text-primary font-mono w-6 text-center">{connections}</span>
                     </div>
                   </div>
 
                   <div className="flex items-center justify-between">
                     <label className="flex items-center gap-2 text-xs text-text-secondary font-medium cursor-pointer">
-                      <input type="checkbox" checked={speedLimitEnabled} onChange={e=>setSpeedLimitEnabled(e.target.checked)} className="rounded border-border-modal text-blue-500 focus:ring-blue-500/20" />
+                      <input type="checkbox" checked={speedLimitEnabled} onChange={e=>setSpeedLimitEnabled(e.target.checked)} className="add-download-checkbox" />
                       Limit speed per file
                     </label>
                     {speedLimitEnabled && (
                       <div className="flex items-center gap-1.5">
-                        <input type="number" value={speedLimit} onChange={e=>setSpeedLimit(e.target.value)} className="w-16 bg-bg-input border border-border-modal rounded-lg px-2 py-1 text-xs font-mono text-text-primary focus:border-accent focus:outline-none" />
+                        <input type="number" value={speedLimit} onChange={e=>setSpeedLimit(e.target.value)} className="add-download-control w-16 px-2 py-1 text-xs font-mono" aria-label="Speed limit per file" />
                         <span className="text-[10px] text-text-muted">KiB/s</span>
                       </div>
                     )}
@@ -933,28 +958,29 @@ export const AddDownloadsModal = () => {
               </section>
 
               {/* Authorization */}
-              <section>
-                <div className="flex items-center gap-2 text-sm font-semibold text-text-primary mb-3">
+              <section className="add-download-section">
+                <div className="add-download-section-title flex items-center gap-2 mb-3">
                   <Shield size={16} className="text-blue-500" /> Authorization
                 </div>
                 <label className="flex items-center gap-2 text-xs text-text-secondary font-medium cursor-pointer mb-3">
-                  <input type="checkbox" checked={useAuth} onChange={e=>setUseAuth(e.target.checked)} className="rounded border-border-modal text-blue-500 focus:ring-blue-500/20" />
+                  <input type="checkbox" checked={useAuth} onChange={e=>setUseAuth(e.target.checked)} className="add-download-checkbox" />
                   Use authorization
                 </label>
 
                 {useAuth && (
                   <div className="space-y-2.5 pl-5 border-l-2 border-border-modal/50">
-                    <input type="text" value={username} onChange={e=>setUsername(e.target.value)} placeholder="Username" className="w-full bg-bg-input border border-border-modal rounded-lg px-3 py-1.5 text-xs text-text-primary focus:border-accent focus:outline-none" />
-                    <input type="password" value={password} onChange={e=>setPassword(e.target.value)} placeholder="Password" className="w-full bg-bg-input border border-border-modal rounded-lg px-3 py-1.5 text-xs text-text-primary focus:border-accent focus:outline-none" />
+                    <input type="text" value={username} onChange={e=>setUsername(e.target.value)} placeholder="Username" className="add-download-control w-full px-3 py-1.5 text-xs" />
+                    <input type="password" value={password} onChange={e=>setPassword(e.target.value)} placeholder="Password" className="add-download-control w-full px-3 py-1.5 text-xs" />
                   </div>
                 )}
               </section>
 
               {/* Advanced */}
-              <section className="pt-2 border-t border-border-modal/50">
+              <section className="add-download-section add-download-advanced">
                 <button
                   onClick={() => setAdvancedExpanded(!advancedExpanded)}
-                  className="flex items-center gap-2 text-sm font-semibold text-text-primary w-full hover:text-blue-500 transition-colors"
+                  className="add-download-advanced-toggle flex items-center gap-2 text-sm font-semibold text-text-primary w-full"
+                  aria-expanded={advancedExpanded}
                 >
                   {advancedExpanded ? <ChevronDown size={16} /> : <ChevronRight size={16} />}
                   Advanced Transfer
@@ -963,30 +989,30 @@ export const AddDownloadsModal = () => {
                 {advancedExpanded && (
                   <div className="mt-4 space-y-4 pl-6">
                     <label className="flex items-center gap-2 text-xs text-text-secondary font-medium cursor-pointer">
-                      <input type="checkbox" checked={checksumEnabled} onChange={e=>setChecksumEnabled(e.target.checked)} className="rounded border-border-modal text-blue-500 focus:ring-blue-500/20" />
+                      <input type="checkbox" checked={checksumEnabled} onChange={e=>setChecksumEnabled(e.target.checked)} className="add-download-checkbox" />
                       Verify Checksum
                     </label>
 
                     {checksumEnabled && (
                       <div className="flex gap-2">
-                        <select value={checksumAlgo} onChange={e=>setChecksumAlgo(e.target.value)} className="w-24 bg-bg-input border border-border-modal rounded-lg px-2 text-xs text-text-primary focus:border-accent focus:outline-none">
+                        <select value={checksumAlgo} onChange={e=>setChecksumAlgo(e.target.value)} className="add-download-control add-download-select w-24 px-2 text-xs" aria-label="Checksum algorithm">
                           <option>MD5</option><option>SHA-1</option><option>SHA-256</option>
                         </select>
-                        <input type="text" value={checksumValue} onChange={e=>setChecksumValue(e.target.value)} placeholder="Expected digest" className="flex-1 bg-bg-input border border-border-modal rounded-lg px-3 py-1.5 text-xs font-mono text-text-primary focus:border-accent focus:outline-none" />
+                        <input type="text" value={checksumValue} onChange={e=>setChecksumValue(e.target.value)} placeholder="Expected digest" className="add-download-control flex-1 px-3 py-1.5 text-xs font-mono" />
                       </div>
                     )}
 
                     <div>
                       <label className="block text-[10px] uppercase font-bold tracking-wider text-text-muted mb-1">Headers</label>
-                      <textarea value={headers} onChange={e=>setHeaders(e.target.value)} className="w-full h-12 bg-bg-input border border-border-modal rounded-lg px-3 py-1.5 text-xs font-mono text-text-primary focus:border-accent focus:outline-none resize-none" />
+                      <textarea value={headers} onChange={e=>setHeaders(e.target.value)} className="add-download-control w-full h-12 px-3 py-1.5 text-xs font-mono resize-none" aria-label="Request headers" />
                     </div>
                     <div>
                       <label className="block text-[10px] uppercase font-bold tracking-wider text-text-muted mb-1">Cookies</label>
-                      <input type="text" value={cookies} onChange={e=>setCookies(e.target.value)} placeholder="name=value; other=value" className="w-full bg-bg-input border border-border-modal rounded-lg px-3 py-1.5 text-xs font-mono text-text-primary focus:border-accent focus:outline-none" />
+                      <input type="text" value={cookies} onChange={e=>setCookies(e.target.value)} placeholder="name=value; other=value" className="add-download-control w-full px-3 py-1.5 text-xs font-mono" aria-label="Cookies" />
                     </div>
                     <div>
                       <label className="block text-[10px] uppercase font-bold tracking-wider text-text-muted mb-1">Mirrors</label>
-                      <textarea value={mirrors} onChange={e=>setMirrors(e.target.value)} className="w-full h-12 bg-bg-input border border-border-modal rounded-lg px-3 py-1.5 text-xs font-mono text-text-primary focus:border-accent focus:outline-none resize-none" />
+                      <textarea value={mirrors} onChange={e=>setMirrors(e.target.value)} className="add-download-control w-full h-12 px-3 py-1.5 text-xs font-mono resize-none" aria-label="Mirrors" />
                     </div>
                   </div>
                 )}
@@ -997,25 +1023,25 @@ export const AddDownloadsModal = () => {
         </div>
 
         {/* Footer */}
-        <div className="p-4 bg-sidebar-bg/50 border-t border-border-modal flex items-center shrink-0">
+        <div className="add-download-footer p-4 flex items-center shrink-0">
           <div className="text-[11px] text-text-muted font-medium flex-1">
             {parsedItems.length === 0 ? "Paste one or more links." : `Ready to add ${parsedItems.length} download(s).`}
           </div>
           <div className="flex gap-2.5">
-            <button onClick={() => toggleAddModal(false)} className="app-button border-transparent bg-transparent px-4 text-xs text-text-secondary">
+            <button onClick={() => toggleAddModal(false)} className="add-download-button add-download-button-cancel px-4 text-xs">
               Cancel
             </button>
             <button
               onClick={() => handleStart(false)}
               disabled={parsedItems.length === 0}
-              className="app-button px-4 text-xs disabled:opacity-50"
+              className="add-download-button add-download-button-secondary px-4 text-xs"
             >
               Add to Queue
             </button>
             <button
               onClick={() => handleStart(true)}
               disabled={parsedItems.length === 0}
-              className="app-button app-button-primary px-5 text-xs disabled:opacity-50"
+              className="add-download-button add-download-button-primary px-5 text-xs"
             >
               <Play size={12} fill="currentColor" /> Start Downloads
             </button>

src/index.css

@@ -376,6 +376,353 @@
     animation: modal-in 150ms ease-out;
   }
 
+  /* Add Download window */
+  .add-download-modal {
+    --add-surface: hsl(var(--surface-raised) / 0.72);
+    --add-highlight: hsl(0 0% 100% / 0.08);
+    background:
+      linear-gradient(180deg, hsl(var(--surface-overlay) / 0.94), hsl(var(--bg-modal) / 0.98));
+    backdrop-filter: blur(22px) saturate(1.12);
+    -webkit-backdrop-filter: blur(22px) saturate(1.12);
+    border-color: hsl(var(--border-modal));
+    border-radius: 14px;
+    box-shadow:
+      inset 0 1px 0 hsl(0 0% 100% / 0.08),
+      0 28px 70px hsl(var(--shadow-color)),
+      0 2px 10px hsl(var(--shadow-color));
+  }
+
+  .add-download-left {
+    background:
+      radial-gradient(circle at 18% 0%, hsl(var(--accent-color) / 0.055), transparent 34%),
+      hsl(var(--main-bg) / 0.56);
+  }
+
+  .add-download-settings {
+    background: hsl(var(--bg-modal) / 0.7);
+  }
+
+  .add-download-section-title {
+    color: hsl(var(--text-primary));
+    font-size: 13px;
+    font-weight: 650;
+    letter-spacing: -0.005em;
+  }
+
+  .add-download-section {
+    border: 1px solid hsl(var(--border-modal));
+    border-radius: 11px;
+    background:
+      linear-gradient(180deg, var(--add-highlight), transparent 38%),
+      var(--add-surface);
+    padding: 14px;
+    box-shadow:
+      inset 0 1px 0 hsl(0 0% 100% / 0.045),
+      0 1px 2px hsl(var(--shadow-color));
+  }
+
+  .add-download-control {
+    min-height: 30px;
+    border: 1px solid hsl(var(--border-modal));
+    border-radius: 7px;
+    background:
+      linear-gradient(180deg, hsl(0 0% 100% / 0.035), transparent),
+      hsl(var(--bg-input) / 0.9);
+    color: hsl(var(--text-primary));
+    box-shadow:
+      inset 0 1px 2px hsl(var(--shadow-color)),
+      0 1px 0 hsl(0 0% 100% / 0.035);
+    transition:
+      border-color 120ms ease,
+      background-color 120ms ease,
+      box-shadow 120ms ease;
+  }
+
+  .add-download-control:hover:not(:disabled):not(:read-only) {
+    border-color: hsl(var(--text-muted) / 0.7);
+  }
+
+  .add-download-control:focus,
+  .add-download-control:focus-visible {
+    border-color: hsl(var(--accent-color) / 0.9);
+    outline: none;
+    box-shadow:
+      0 0 0 3px hsl(var(--accent-color) / 0.18),
+      inset 0 1px 2px hsl(var(--shadow-color));
+  }
+
+  .add-download-control:read-only {
+    background: hsl(var(--bg-input) / 0.62);
+  }
+
+  .add-download-control::placeholder {
+    color: hsl(var(--text-muted) / 0.82);
+  }
+
+  .add-download-links-input {
+    border-radius: 10px;
+    line-height: 1.55;
+  }
+
+  .add-download-link-button {
+    border-radius: 6px;
+    color: hsl(var(--accent-color));
+    padding: 3px 5px;
+    transition: background-color 120ms ease, color 120ms ease;
+  }
+
+  .add-download-link-button:hover {
+    background: hsl(var(--accent-color) / 0.1);
+  }
+
+  .add-download-summary-card {
+    min-width: 0;
+    padding: 10px 11px;
+    border: 1px solid hsl(var(--border-modal));
+    border-radius: 10px;
+    background:
+      linear-gradient(145deg, hsl(0 0% 100% / 0.055), transparent 55%),
+      var(--add-surface);
+    box-shadow:
+      inset 0 1px 0 hsl(0 0% 100% / 0.045),
+      0 1px 2px hsl(var(--shadow-color));
+  }
+
+  .add-download-preview {
+    border: 1px solid hsl(var(--border-modal));
+    border-radius: 11px;
+    background: hsl(var(--bg-input) / 0.35);
+    box-shadow: inset 0 1px 2px hsl(var(--shadow-color));
+  }
+
+  .add-download-preview-header {
+    border-bottom: 1px solid hsl(var(--border-modal));
+    background: hsl(var(--surface-raised) / 0.66);
+  }
+
+  .add-download-preview-row {
+    transition:
+      background-color 100ms ease,
+      border-color 100ms ease,
+      box-shadow 100ms ease;
+  }
+
+  .add-download-preview-row:hover {
+    background: hsl(var(--item-hover));
+  }
+
+  .add-download-preview-row.is-selected {
+    border-color: hsl(var(--accent-color) / 0.34);
+    background: hsl(var(--accent-color) / 0.11);
+    box-shadow: inset 3px 0 0 hsl(var(--accent-color) / 0.85);
+  }
+
+  .add-download-preview-row:focus-visible,
+  .add-download-format-row:focus-visible {
+    outline: 2px solid hsl(var(--accent-color) / 0.6);
+    outline-offset: -1px;
+  }
+
+  .add-download-empty {
+    color: hsl(var(--text-muted) / 0.86);
+  }
+
+  .add-download-media-section {
+    border-color: hsl(272 70% 62% / 0.28);
+    background:
+      radial-gradient(circle at 100% 0%, hsl(272 75% 60% / 0.09), transparent 46%),
+      var(--add-surface);
+  }
+
+  .add-download-format-row {
+    border-color: hsl(var(--border-modal));
+    border-radius: 8px;
+    background: hsl(var(--bg-input) / 0.7);
+    transition:
+      background-color 100ms ease,
+      border-color 100ms ease,
+      box-shadow 100ms ease;
+  }
+
+  .add-download-format-row:hover {
+    background: hsl(var(--item-hover));
+    border-color: hsl(var(--text-muted) / 0.55);
+  }
+
+  .add-download-format-row.is-selected {
+    border-color: hsl(272 74% 62% / 0.42);
+    background: hsl(272 74% 58% / 0.12);
+    box-shadow: inset 3px 0 0 hsl(272 74% 62% / 0.9);
+  }
+
+  .add-download-select {
+    appearance: auto;
+    cursor: default;
+  }
+
+  .add-download-value {
+    min-width: 25px;
+    padding: 2px 4px;
+    border: 1px solid hsl(var(--border-modal));
+    border-radius: 5px;
+    background: hsl(var(--bg-input) / 0.68);
+  }
+
+  .add-download-checkbox {
+    appearance: none;
+    width: 15px;
+    height: 15px;
+    flex: 0 0 15px;
+    border: 1px solid hsl(var(--border-modal));
+    border-radius: 4px;
+    background: hsl(var(--bg-input) / 0.92);
+    box-shadow: inset 0 1px 1px hsl(var(--shadow-color));
+    cursor: default;
+    transition:
+      border-color 100ms ease,
+      background-color 100ms ease,
+      box-shadow 100ms ease;
+  }
+
+  .add-download-checkbox:hover {
+    border-color: hsl(var(--text-muted) / 0.8);
+  }
+
+  .add-download-checkbox:checked {
+    border-color: hsl(var(--accent-color));
+    background-color: hsl(var(--accent-color));
+    background-image:
+      url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='m2.4 6.2 2.2 2.2 5-5' fill='none' stroke='white' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
+    background-position: center;
+    background-repeat: no-repeat;
+  }
+
+  .add-download-checkbox:focus-visible {
+    outline: none;
+    box-shadow:
+      0 0 0 3px hsl(var(--accent-color) / 0.2),
+      inset 0 1px 1px hsl(var(--shadow-color));
+  }
+
+  .add-download-range {
+    height: 16px;
+    accent-color: hsl(var(--accent-color));
+  }
+
+  .add-download-range:disabled {
+    opacity: 0.42;
+  }
+
+  .add-download-advanced {
+    padding: 0;
+    overflow: hidden;
+  }
+
+  .add-download-advanced-toggle {
+    min-height: 42px;
+    padding: 0 14px;
+    border-radius: 10px;
+    transition: background-color 100ms ease, color 100ms ease;
+  }
+
+  .add-download-advanced-toggle:hover {
+    background: hsl(var(--item-hover));
+    color: hsl(var(--accent-color));
+  }
+
+  .add-download-advanced > div {
+    padding: 0 14px 14px;
+  }
+
+  .add-download-footer {
+    border-top: 1px solid hsl(var(--border-modal));
+    background:
+      linear-gradient(180deg, hsl(0 0% 100% / 0.035), transparent),
+      hsl(var(--surface-raised) / 0.78);
+    box-shadow: 0 -1px 0 hsl(0 0% 100% / 0.025);
+  }
+
+  .add-download-button {
+    display: inline-flex;
+    min-height: 30px;
+    align-items: center;
+    justify-content: center;
+    gap: 6px;
+    border: 1px solid transparent;
+    border-radius: 7px;
+    color: hsl(var(--text-primary));
+    font-weight: 560;
+    letter-spacing: -0.005em;
+    transition:
+      background-color 100ms ease,
+      border-color 100ms ease,
+      box-shadow 100ms ease,
+      transform 70ms ease,
+      opacity 100ms ease;
+  }
+
+  .add-download-button:active:not(:disabled) {
+    transform: translateY(1px);
+  }
+
+  .add-download-button-secondary {
+    border-color: hsl(var(--border-modal));
+    background:
+      linear-gradient(180deg, hsl(0 0% 100% / 0.055), transparent),
+      hsl(var(--bg-input) / 0.88);
+    box-shadow:
+      inset 0 1px 0 hsl(0 0% 100% / 0.055),
+      0 1px 2px hsl(var(--shadow-color));
+  }
+
+  .add-download-button-secondary:hover:not(:disabled) {
+    border-color: hsl(var(--text-muted) / 0.65);
+    background:
+      linear-gradient(hsl(var(--item-hover)), hsl(var(--item-hover))),
+      hsl(var(--bg-input));
+  }
+
+  .add-download-button-cancel {
+    color: hsl(var(--text-secondary));
+  }
+
+  .add-download-button-cancel:hover:not(:disabled) {
+    background: hsl(var(--item-hover));
+    color: hsl(var(--text-primary));
+  }
+
+  .add-download-button-primary {
+    border-color: hsl(var(--accent-color) / 0.86);
+    background:
+      linear-gradient(180deg, hsl(0 0% 100% / 0.16), transparent 52%),
+      hsl(var(--accent-color));
+    color: white;
+    box-shadow:
+      inset 0 1px 0 hsl(0 0% 100% / 0.18),
+      0 1px 2px hsl(var(--accent-color) / 0.32);
+  }
+
+  .add-download-button-primary:hover:not(:disabled) {
+    background:
+      linear-gradient(180deg, hsl(0 0% 100% / 0.2), transparent 52%),
+      hsl(var(--accent-color) / 0.92);
+    box-shadow:
+      inset 0 1px 0 hsl(0 0% 100% / 0.2),
+      0 2px 5px hsl(var(--accent-color) / 0.3);
+  }
+
+  .add-download-button:disabled {
+    opacity: 0.42;
+    filter: saturate(0.55);
+  }
+
+  .add-download-button:focus-visible,
+  .add-download-link-button:focus-visible,
+  .add-download-advanced-toggle:focus-visible {
+    outline: 2px solid hsl(var(--accent-color) / 0.65);
+    outline-offset: 2px;
+  }
+
   .app-toast {
     border: 1px solid hsl(var(--border-modal));
     border-radius: 8px;