diff --git a/src/styles/components/settings.css b/src/styles/components/settings.css
index cfac8187..8838a7e7 100644
--- a/src/styles/components/settings.css
+++ b/src/styles/components/settings.css
@@ -12,4 +12,88 @@
 .settings-footer .btn-primary:hover:not(:disabled) { background: rgb(79 70 229); /* indigo-600 */ }
 .settings-footer .btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }
 
+/* Setting groups */
+.setting-group { margin-bottom: 1.5rem; }
+.setting-label { display: block; margin-bottom: 0.75rem; font-size: 0.9rem; font-weight: 500; color: rgb(212 212 216); /* zinc-300 */ }
+
+/* Zap splits preset buttons */
+.zap-preset-buttons { display: flex; gap: 0.5rem; flex-wrap: wrap; }
+.zap-preset-btn {
+  padding: 0.625rem 1.25rem;
+  background: rgb(39 39 42); /* zinc-800 */
+  border: 1px solid rgb(82 82 91); /* zinc-600 */
+  border-radius: 6px;
+  color: rgb(212 212 216); /* zinc-300 */
+  font-size: 0.9rem;
+  cursor: pointer;
+  transition: all 0.2s ease;
+  font-weight: 500;
+}
+.zap-preset-btn:hover {
+  background: rgb(63 63 70); /* zinc-700 */
+  border-color: rgb(99 102 241); /* indigo-500 */
+  color: rgb(255 255 255); /* white */
+}
+.zap-preset-btn.active {
+  background: rgb(99 102 241); /* indigo-500 */
+  border-color: rgb(99 102 241); /* indigo-500 */
+  color: rgb(255 255 255); /* white */
+}
+
+/* Zap split sliders */
+.zap-split-container { width: 100%; }
+.zap-split-labels {
+  display: flex;
+  justify-content: space-between;
+  margin-bottom: 0.5rem;
+  font-size: 0.85rem;
+  color: rgb(161 161 170); /* zinc-400 */
+}
+.zap-split-label { font-weight: 500; }
+.zap-split-slider {
+  width: 100%;
+  height: 8px;
+  border-radius: 4px;
+  background: rgb(39 39 42); /* zinc-800 */
+  outline: none;
+  -webkit-appearance: none;
+}
+.zap-split-slider::-webkit-slider-thumb {
+  -webkit-appearance: none;
+  appearance: none;
+  width: 20px;
+  height: 20px;
+  border-radius: 50%;
+  background: rgb(99 102 241); /* indigo-500 */
+  cursor: pointer;
+  transition: all 0.2s ease;
+}
+.zap-split-slider::-webkit-slider-thumb:hover {
+  background: rgb(79 70 229); /* indigo-600 */
+  transform: scale(1.1);
+}
+.zap-split-slider::-moz-range-thumb {
+  width: 20px;
+  height: 20px;
+  border-radius: 50%;
+  background: rgb(99 102 241); /* indigo-500 */
+  cursor: pointer;
+  border: none;
+  transition: all 0.2s ease;
+}
+.zap-split-slider::-moz-range-thumb:hover {
+  background: rgb(79 70 229); /* indigo-600 */
+  transform: scale(1.1);
+}
+.zap-split-description {
+  margin-top: 1.5rem;
+  padding: 1rem;
+  background: rgb(39 39 42); /* zinc-800 */
+  border: 1px solid rgb(63 63 70); /* zinc-700 */
+  border-radius: 6px;
+  font-size: 0.875rem;
+  line-height: 1.5;
+  color: rgb(161 161 170); /* zinc-400 */
+}
+