Make buttons smaller for chapter pages

Author: huangsam

ui/src/components/chapter/ChapterNav.astro

@@ -24,11 +24,11 @@ const {
 const t = useTranslations(activeLang);
 ---
 
-<nav class="chapter-nav" aria-label="Chapter navigation">
+<nav class="chapter-nav" aria-label="Chapter">
   {isFirstChapter ? (
     <a href={`/ultimate-python/${activeLang}/`} class="chapter-nav-btn prev">
       <span class="nav-direction">
-        <ChevronLeft size={14} />
+        <ChevronLeft size={14} aria-hidden="true" />
         <span>{t('nav.home')}</span>
       </span>
       <span class="nav-title">{t('site.title')}</span>
@@ -39,7 +39,7 @@ const t = useTranslations(activeLang);
       class="chapter-nav-btn prev"
     >
       <span class="nav-direction">
-        <ChevronLeft size={14} />
+        <ChevronLeft size={14} aria-hidden="true" />
         <span>{t('chapter.prev')}</span>
       </span>
       <span class="nav-title">{prevChapter.name}</span>
@@ -55,7 +55,7 @@ const t = useTranslations(activeLang);
     >
       <span class="nav-direction">
         <span>{t('chapter.next')}</span>
-        <ChevronRight size={14} />
+        <ChevronRight size={14} aria-hidden="true" />
       </span>
       <span class="nav-title">{nextChapter.name}</span>
     </a>
@@ -68,63 +68,73 @@ const t = useTranslations(activeLang);
   .chapter-nav {
     display: flex;
     justify-content: space-between;
-    gap: 1.5rem;
-    padding-top: 2.5rem;
+    gap: 1rem;
+    padding-top: 2rem;
     border-top: 1px solid var(--border-color);
-    margin-top: 3.5rem;
+    margin-top: 1rem;
     width: 100%;
   }
 
   .chapter-nav-btn {
     display: flex;
     flex-direction: column;
-    padding: 1rem 1.35rem;
-    border-radius: 8px;
+    padding: 0.55rem 1rem;
+    border-radius: 6px;
     background-color: var(--bg-secondary);
     border: 1px solid var(--border-color);
     color: var(--text-primary);
     transition:
       transform var(--transition-speed),
       border-color var(--transition-speed),
+      background-color var(--transition-speed),
       box-shadow var(--transition-speed);
-    min-width: 180px;
-    max-width: 48%;
+    min-width: 140px;
+    max-width: 45%;
     text-decoration: none;
   }
 
-  .chapter-nav-btn:hover {
+  .chapter-nav-btn:hover,
+  .chapter-nav-btn:focus-visible {
     background-color: var(--bg-tertiary);
     border-color: var(--forest-green);
-    transform: translateY(-2px);
+    transform: translateY(-1px);
     box-shadow: 0 4px 12px rgba(27, 67, 50, 0.08);
   }
 
+  .chapter-nav-btn:focus-visible {
+    outline: 2px solid var(--forest-green);
+    outline-offset: 2px;
+  }
+
   .chapter-nav-btn.next {
     margin-left: auto;
     align-items: flex-end;
     text-align: right;
   }
 
   .nav-direction {
-    font-size: 0.75rem;
+    font-size: 0.68rem;
     color: var(--text-secondary);
     text-transform: uppercase;
     letter-spacing: 0.05em;
     font-family: var(--font-sans);
     margin-bottom: 0.35rem;
+    line-height: 1.2;
     display: inline-flex;
     align-items: center;
     gap: 0.35rem;
     font-weight: 500;
   }
 
-  .chapter-nav-btn:hover .nav-direction {
+  .chapter-nav-btn:hover .nav-direction,
+  .chapter-nav-btn:focus-visible .nav-direction {
     color: var(--forest-green);
   }
 
   .nav-title {
-    font-size: 1.05rem;
+    font-size: 0.88rem;
     font-weight: 600;
+    line-height: 1.3;
     color: var(--forest-green);
     font-family: var(--font-serif);
     white-space: nowrap;
@@ -139,20 +149,17 @@ const t = useTranslations(activeLang);
 
   @media (width <= 640px) {
     .chapter-nav {
-      flex-direction: column;
-      gap: 1rem;
-      padding-top: 1.5rem;
-      margin-top: 2rem;
+      padding-top: 1.25rem;
+      gap: 0.5rem;
     }
 
     .chapter-nav-btn {
-      max-width: 100%;
-      width: 100%;
+      padding: 0.5rem 0.75rem;
+      min-width: 120px;
     }
 
-    .chapter-nav-btn.next {
-      align-items: flex-start;
-      text-align: left;
+    .nav-title {
+      font-size: 0.82rem;
     }
   }
 </style>

ui/src/pages/[lang]/[category]/index.astro

@@ -222,7 +222,7 @@ const firstLesson = categoryLessons[0];
   .lessons-section {
     display: flex;
     flex-direction: column;
-    gap: 1.75rem;
+    gap: 2rem;
   }
 
   .section-header {

ui/src/pages/[lang]/index.astro

@@ -117,16 +117,16 @@ const totalLessons = lessons.length;
   }
 
   h1 {
-    font-size: clamp(2rem, 4vw, 2.35rem);
-    line-height: 1.25;
+    font-size: clamp(2.2rem, 4.5vw, 2.75rem);
+    line-height: 1.2;
     margin-top: 0.5rem;
     letter-spacing: -0.01em;
   }
 
   .subtitle {
-    font-size: 1.05rem;
+    font-size: 1.125rem;
     color: var(--text-secondary);
-    line-height: 1.6;
+    line-height: 1.65;
   }
 
   .cta-group {
@@ -181,11 +181,11 @@ const totalLessons = lessons.length;
     }
 
     h1 {
-      font-size: 1.75rem;
+      font-size: 1.95rem;
     }
 
     .subtitle {
-      font-size: 0.95rem;
+      font-size: 1rem;
     }
 
     .cta-group {