feat(settings): redesign Card Overlay Blur range slider to match settings UI style

static/css/components/modal/settings-modal.css

@@ -823,54 +823,107 @@
 }
 
 .range-control input[type="range"] {
+    --range-fill: 40%;
     width: 120px;
-    height: 4px;
+    height: 6px;
     -webkit-appearance: none;
     appearance: none;
-    background: var(--border-color);
-    border-radius: 2px;
+    background: linear-gradient(
+        to right,
+        var(--lora-accent) 0%,
+        var(--lora-accent) var(--range-fill),
+        var(--border-color) var(--range-fill),
+        var(--border-color) 100%
+    );
+    border-radius: var(--radius-full);
     outline: none;
     cursor: pointer;
     flex-shrink: 0;
+    transition: background 0.3s ease;
+}
+
+.range-control input[type="range"]:focus-visible {
+    outline: none;
 }
 
 .range-control input[type="range"]::-webkit-slider-thumb {
     -webkit-appearance: none;
     appearance: none;
-    width: 16px;
-    height: 16px;
+    width: 18px;
+    height: 18px;
     border-radius: 50%;
     background: var(--lora-accent);
     cursor: pointer;
     border: 2px solid var(--lora-surface);
-    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
-    transition: transform 0.15s ease;
+    box-shadow: var(--shadow-md);
+    transition: transform var(--transition-bounce), box-shadow 0.2s ease;
 }
 
 .range-control input[type="range"]::-webkit-slider-thumb:hover {
-    transform: scale(1.15);
+    transform: scale(1.2);
+    box-shadow: var(--shadow-md), 0 0 0 4px var(--color-accent-subtle);
+}
+
+.range-control input[type="range"]::-webkit-slider-thumb:active {
+    transform: scale(1.1);
+    box-shadow: var(--shadow-md), 0 0 0 6px var(--color-accent-subtle);
+}
+
+.range-control input[type="range"]:focus-visible::-webkit-slider-thumb {
+    box-shadow: var(--shadow-md), 0 0 0 3px var(--color-accent-subtle);
 }
 
 .range-control input[type="range"]::-moz-range-thumb {
-    width: 16px;
-    height: 16px;
+    width: 18px;
+    height: 18px;
     border-radius: 50%;
     background: var(--lora-accent);
     cursor: pointer;
     border: 2px solid var(--lora-surface);
-    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
+    box-shadow: var(--shadow-md);
+    transition: transform var(--transition-bounce), box-shadow 0.2s ease;
+}
+
+.range-control input[type="range"]::-moz-range-thumb:hover {
+    transform: scale(1.2);
+    box-shadow: var(--shadow-md), 0 0 0 4px var(--color-accent-subtle);
+}
+
+.range-control input[type="range"]::-moz-range-thumb:active {
+    transform: scale(1.1);
+    box-shadow: var(--shadow-md), 0 0 0 6px var(--color-accent-subtle);
+}
+
+.range-control input[type="range"]::-moz-range-track {
+    height: 6px;
+    border-radius: var(--radius-full);
+    background: var(--border-color);
 }
 
 .range-control .range-value {
     min-width: 36px;
     text-align: center;
-    font-size: 0.9em;
-    font-weight: 600;
-    color: var(--text-color);
+    font-size: 0.85em;
+    font-weight: 700;
+    color: var(--lora-accent);
     font-variant-numeric: tabular-nums;
+    background: var(--surface-subtle);
+    padding: 2px 8px;
+    border-radius: var(--border-radius-xs);
+    letter-spacing: 0.02em;
 }
 
 [data-theme="dark"] .range-control input[type="range"] {
+    background: linear-gradient(
+        to right,
+        var(--lora-accent) 0%,
+        var(--lora-accent) var(--range-fill),
+        rgba(255, 255, 255, 0.15) var(--range-fill),
+        rgba(255, 255, 255, 0.15) 100%
+    );
+}
+
+[data-theme="dark"] .range-control input[type="range"]::-moz-range-track {
     background: rgba(255, 255, 255, 0.15);
 }
 

static/js/managers/SettingsManager.js

@@ -805,12 +805,14 @@ export class SettingsManager {
 
         // Set card blur amount slider
         const cardBlurAmountInput = document.getElementById('cardBlurAmount');
+        const cardBlurValue = state.global.settings.card_blur_amount ?? 8;
         if (cardBlurAmountInput) {
-            cardBlurAmountInput.value = state.global.settings.card_blur_amount ?? 8;
+            cardBlurAmountInput.value = cardBlurValue;
+            cardBlurAmountInput.style.setProperty('--range-fill', (cardBlurValue / 20 * 100) + '%');
         }
         const cardBlurAmountValue = document.getElementById('cardBlurAmountValue');
         if (cardBlurAmountValue) {
-            cardBlurAmountValue.textContent = `${state.global.settings.card_blur_amount ?? 8}px`;
+            cardBlurAmountValue.textContent = `${cardBlurValue}px`;
         }
 
         const usePortableCheckbox = document.getElementById('usePortableSettings');
@@ -2070,6 +2072,9 @@ export class SettingsManager {
                 displayEl.textContent = `${value}px`;
             }
 
+            const max = parseInt(element.max, 10) || 20;
+            element.style.setProperty('--range-fill', (value / max * 100) + '%');
+
             showToast('toast.settings.settingsUpdated', { setting: settingKey.replace(/_/g, ' ') }, 'success');
         } catch (error) {
             showToast('toast.settings.settingSaveFailed', { message: error.message }, 'error');

templates/components/modals/settings_modal.html

@@ -549,7 +549,7 @@
                                     </div>
                                     <div class="setting-control range-control">
                                         <input type="range" id="cardBlurAmount" min="0" max="20" value="8" step="1"
-                                               oninput="document.getElementById('cardBlurAmountValue').textContent = this.value + 'px'"
+                                               oninput="var pct = (this.value / 20) * 100; this.style.setProperty('--range-fill', pct + '%'); document.getElementById('cardBlurAmountValue').textContent = this.value + 'px'"
                                                onchange="settingsManager.saveRangeSetting('cardBlurAmount', 'cardBlurAmountValue', 'card_blur_amount')">
                                         <span id="cardBlurAmountValue" class="range-value">8px</span>
                                     </div>