diff --git a/src/style.css b/src/style.css
index cdc2bf0..0c35e49 100644
--- a/src/style.css
+++ b/src/style.css
@@ -3,26 +3,30 @@
 @tailwind utilities;
 
 :root {
-  --c-bg: #fafafa;
+  --c-bg: #f5f5f7;
   --c-surface: #ffffff;
-  --c-border: #ebebeb;
-  --c-border-hover: #d4d4d4;
+  --c-border: #d8d8e0;
+  --c-border-hover: #c0c0cc;
   --c-text: #1a1a2e;
-  --c-text-secondary: #6b6b7b;
-  --c-text-tertiary: #9999a8;
+  --c-text-secondary: #505065;
+  --c-text-tertiary: #7a7a8e;
   --c-accent: #1a1a2e;
-  --c-accent-hover: #2a2a3e;
-  --c-focus: rgba(26, 26, 46, 0.08);
+  --c-accent-hover: #353550;
+  --c-focus: rgba(26, 26, 46, 0.12);
   --c-progress: #1a1a2e;
   --c-error: #dc2626;
+  --c-success: #2d6a4f;
   --c-log-bg: #1a1a2e;
   --c-log-text: #d4d4d4;
+  --c-accent-gradient: linear-gradient(135deg, #1a1a2e, #2d2d4a);
+  --c-surface-gradient: linear-gradient(135deg, #ffffff, #f8f8fc);
+  --c-progress-gradient: linear-gradient(90deg, #1a1a2e, #4a4a6e);
   --radius-sm: 6px;
   --radius-md: 10px;
   --radius-lg: 14px;
   --radius-full: 999px;
-  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
-  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
+  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
+  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
   --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
   color: var(--c-text);
   background: var(--c-bg);
@@ -91,15 +95,16 @@ textarea {
 }
 
 .panel {
-  background: var(--c-surface);
+  background: var(--c-surface-gradient);
   border: 1px solid var(--c-border);
   border-radius: var(--radius-lg);
   box-shadow: var(--shadow-sm);
-  transition: box-shadow var(--transition);
+  transition: box-shadow var(--transition), border-color var(--transition);
 }
 
 .panel:hover {
   box-shadow: var(--shadow-md);
+  border-color: var(--c-border-hover);
 }
 
 .topbar {
@@ -241,7 +246,7 @@ textarea {
 .editor-input:focus {
   outline: none;
   border-color: var(--c-accent);
-  box-shadow: 0 0 0 3px var(--c-focus);
+  box-shadow: 0 0 0 3px var(--c-focus), 0 1px 4px rgba(26, 26, 46, 0.06);
 }
 
 .check {
@@ -283,16 +288,17 @@ textarea {
   padding: 0 16px;
   border: 1px solid var(--c-accent);
   border-radius: var(--radius-sm);
-  background: var(--c-accent);
+  background: var(--c-accent-gradient);
   color: #fff;
   cursor: pointer;
-  font-weight: 400;
+  font-weight: 500;
   letter-spacing: 0.01em;
-  transition: background var(--transition), border-color var(--transition), transform 0.1s ease;
+  transition: background var(--transition), border-color var(--transition), transform 0.1s ease, box-shadow var(--transition);
 }
 
 .button:hover {
   background: var(--c-accent-hover);
+  box-shadow: 0 2px 8px rgba(26, 26, 46, 0.15);
 }
 
 .button:active {
@@ -355,15 +361,16 @@ textarea {
   display: inline-flex;
   align-items: center;
   justify-content: center;
-  min-width: 24px;
-  height: 24px;
-  padding: 0 8px;
+  min-width: 26px;
+  height: 26px;
+  padding: 0 10px;
   border-radius: var(--radius-full);
-  background: var(--c-bg);
-  color: var(--c-text-secondary);
+  background: var(--c-accent-gradient);
+  color: #fff;
   font-size: 11px;
-  font-weight: 500;
-  border: 1px solid var(--c-border);
+  font-weight: 600;
+  letter-spacing: 0.02em;
+  box-shadow: 0 1px 4px rgba(26, 26, 46, 0.15);
 }
 
 .empty-state {
@@ -408,18 +415,36 @@ textarea {
   box-shadow: var(--shadow-sm);
 }
 
+.task-item:hover {
+  background: rgba(26, 26, 46, 0.02);
+}
+
 .task-item.active {
   border-color: var(--c-accent);
-  background: rgba(26, 26, 46, 0.03);
-  box-shadow: inset 0 0 0 1px var(--c-accent);
+  background: rgba(26, 26, 46, 0.04);
+  border-left-color: var(--c-accent);
+  box-shadow: inset 0 0 0 1px var(--c-accent), 0 2px 8px rgba(26, 26, 46, 0.06);
 }
 
 .task-item.completed {
   opacity: 0.85;
 }
 
+.task-item.completed::after {
+  content: '';
+  position: absolute;
+  top: 12px;
+  right: 12px;
+  width: 6px;
+  height: 6px;
+  border-radius: 50%;
+  background: var(--c-success);
+  box-shadow: 0 0 6px rgba(45, 106, 79, 0.4);
+}
+
 .task-item.failed {
   border-color: var(--c-error);
+  background: rgba(220, 38, 38, 0.03);
   opacity: 0.9;
 }
 
@@ -458,19 +483,9 @@ textarea {
   color: #fff;
 }
 
-.task-item.completed::after {
-  content: '';
-  position: absolute;
-  top: 12px;
-  right: 12px;
-  width: 6px;
-  height: 6px;
-  border-radius: 50%;
-  background: var(--c-success, #2d6a4f);
-}
-
 .task-item {
   position: relative;
+  border-left: 3px solid transparent;
 }
 
 .truncate {
@@ -480,7 +495,7 @@ textarea {
 }
 
 .progress {
-  height: 2px;
+  height: 3px;
   margin-top: 8px;
   background: var(--c-border);
   border-radius: var(--radius-full);
@@ -489,8 +504,9 @@ textarea {
 
 .progress-bar {
   height: 100%;
-  background: var(--c-progress);
-  transition: width 0.3s ease;
+  background: var(--c-progress-gradient);
+  border-radius: var(--radius-full);
+  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
 }
 
 .error-text {
@@ -508,11 +524,15 @@ textarea {
 
 .source-text {
   margin: 10px 0;
+  padding: 10px 12px;
   white-space: pre-wrap;
   word-break: break-word;
   font-size: 13px;
   color: var(--c-text);
   line-height: 1.6;
+  background: var(--c-bg);
+  border-radius: var(--radius-sm);
+  border-left: 3px solid var(--c-border);
 }
 
 .editor-input {
@@ -543,15 +563,17 @@ textarea {
   padding: 0 14px;
   border: 1px solid var(--c-border);
   border-radius: var(--radius-md);
-  background: var(--c-surface);
+  background: var(--c-surface-gradient);
   color: var(--c-text);
   cursor: pointer;
-  transition: border-color var(--transition), background var(--transition);
+  font-weight: 500;
+  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
 }
 
 .log-toggle:hover {
   border-color: var(--c-border-hover);
   background: var(--c-bg);
+  box-shadow: var(--shadow-sm);
 }
 
 .log-panel {
@@ -619,16 +641,26 @@ textarea {
 
 .task-item .status-active {
   color: var(--c-accent);
-  font-weight: 500;
+  font-weight: 600;
+  position: relative;
 }
 
 .segment-item {
   border-left: 3px solid transparent;
   transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
+  position: relative;
 }
 
 .segment-item:hover {
-  border-left-color: var(--c-border-hover);
+  border-left-color: var(--c-accent);
+  background: rgba(26, 26, 46, 0.02);
+  box-shadow: var(--shadow-sm);
+}
+
+.segment-item:focus-within {
+  border-left-color: var(--c-accent);
+  background: rgba(26, 26, 46, 0.03);
+  box-shadow: 0 0 0 1px rgba(26, 26, 46, 0.08);
 }
 
 .segment-item .task-row {