Refactor chat component styles for responsiveness and consistency

- Updated padding and margin properties across various chat components to utilize responsive design tokens, ensuring better adaptability to different screen sizes.
- Replaced fixed sizes with responsive variables for buttons, avatars, and bubbles to enhance UI flexibility.
- Adjusted font sizes to use responsive tokens, improving text readability on various devices.
- Standardized border-radius and other dimensions using CSS variables for a cohesive design language.
- Enhanced dialog and screen components with safe area insets for better compatibility with modern devices.

src/app/chat/components/history-unlock-dialog.module.css

@@ -6,10 +6,15 @@
   align-items: center;
   justify-content: center;
   background: rgba(0, 0, 0, 0.5);
+  padding:
+    calc(var(--spacing-lg, 16px) + var(--app-safe-top, 0px))
+    calc(var(--spacing-lg, 16px) + var(--app-safe-right, 0px))
+    calc(var(--spacing-lg, 16px) + var(--app-safe-bottom, 0px))
+    calc(var(--spacing-lg, 16px) + var(--app-safe-left, 0px));
 }
 
 .dialog {
-  width: calc(100% - 40px);
+  width: 100%;
   max-width: var(--pwa-install-dialog-max-width, 360px);
   padding: 24px 16px 16px;
   text-align: center;
@@ -20,7 +25,7 @@
 
 .title {
   margin: 0 0 10px;
-  font-size: var(--font-size-22, 22px);
+  font-size: var(--responsive-page-title, var(--font-size-22, 22px));
   font-weight: 700;
   line-height: 1.2;
   color: var(--color-text-foreground, #171717);
@@ -28,7 +33,7 @@
 
 .content {
   margin: 0 24px var(--spacing-lg, 16px);
-  font-size: var(--font-size-lg, 16px);
+  font-size: var(--responsive-body, var(--font-size-lg, 16px));
   line-height: 1.5;
   text-align: left;
   color: #393939;
@@ -36,7 +41,7 @@
 
 .error {
   margin: 0 24px var(--spacing-lg, 16px);
-  font-size: var(--font-size-md, 14px);
+  font-size: var(--responsive-caption, var(--font-size-md, 14px));
   line-height: 1.4;
   text-align: left;
   color: #c0364c;
@@ -50,10 +55,10 @@
 
 .button {
   flex: 1 1 auto;
-  height: var(--pwa-button-height, 44px);
+  min-height: var(--pwa-button-height, 44px);
   border: 0;
   border-radius: var(--radius-bottom-sheet, 28px);
-  font-size: var(--font-size-lg, 16px);
+  font-size: var(--responsive-body, var(--font-size-lg, 16px));
   font-weight: 600;
   cursor: pointer;
   display: flex;