Centralize duplicated card shell, press animation, and color tokens

Extract the rounded-card shell and button press animation into a shared
CSS module composed by PageFrame, TitleScreen, and all buttons, add color
tokens for repeated values, and load the saved game once on mount.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/App.tsx

@@ -21,10 +21,8 @@ function clearGame() {
 }
 
 export default function App() {
-  const [page, setPage] = useState<Page>(() =>
-    loadGame() ? 'scoresheet' : 'title'
-  )
-  const [game, setGame] = useState<GameState | null>(() => loadGame())
+  const [game, setGame] = useState<GameState | null>(loadGame)
+  const [page, setPage] = useState<Page>(() => (game ? 'scoresheet' : 'title'))
 
   function handleNewGame() {
     clearGame()

src/components/PageFrame.module.css

@@ -1,12 +1,6 @@
 .frame {
-  position: fixed;
-  inset: 1rem;
-  border: 2px solid black;
-  border-radius: 2rem;
-  background: #f5f0e4;
-  display: flex;
-  flex-direction: column;
-  overflow: hidden;
+  composes: card from '../styles/shared.module.css';
+  background: var(--color-parchment);
 }
 
 .header {
@@ -23,7 +17,7 @@
 .rule {
   position: relative;
   border: none;
-  border-top: 1px solid #c8b99a;
+  border-top: 1px solid var(--color-parchment-border);
   margin: 0.75rem 0 0;
 }
 
@@ -33,10 +27,10 @@
   top: 50%;
   left: 50%;
   transform: translate(-50%, -50%);
-  background: #f5f0e4;
+  background: var(--color-parchment);
   padding: 0 0.35em;
   font-size: 0.55rem;
-  color: #c8b99a;
+  color: var(--color-parchment-border);
   line-height: 1;
 }
 

src/components/PrimaryButton.module.css

@@ -1,19 +1,13 @@
 .button {
+  composes: pressable from '../styles/shared.module.css';
   width: 100%;
   padding: 1rem;
-  background: #a8d5e8;
+  background: var(--color-blue);
   border: none;
   border-radius: 1rem;
   font-size: 1.25rem;
   font-weight: 600;
   cursor: pointer;
-  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
-  transition: transform 80ms ease, box-shadow 80ms ease;
-}
-
-.button:active:not(:disabled) {
-  transform: translateY(2px);
-  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
 }
 
 .button:disabled {

src/index.css

@@ -1,8 +1,14 @@
+:root {
+  --color-blue: #a8d5e8;
+  --color-parchment: #f5f0e4;
+  --color-parchment-border: #c8b99a;
+}
+
 *, *::before, *::after { box-sizing: border-box; }
 button { min-height: 2.75rem; font-size: 1rem; font-family: inherit; cursor: pointer; }
 html, body, #root { margin: 0; height: 100%; }
 body {
   font-family: sans-serif;
-  background: linear-gradient(to bottom, #a8d5e8, #4a9e6a);
+  background: linear-gradient(to bottom, var(--color-blue), #4a9e6a);
   min-height: 100vh;
 }

src/pages/PlayerSetup.module.css

@@ -10,7 +10,7 @@
   padding: 0.85rem 1rem;
   font-size: 1.1rem;
   font-family: inherit;
-  border: 1.5px solid #c8b99a;
+  border: 1.5px solid var(--color-parchment-border);
   border-radius: 0.75rem;
   background: #fdfaf4;
 }
@@ -20,27 +20,25 @@
   background: #fff5f5;
 }
 
-.removeBtn {
-  flex-shrink: 0;
-  width: 2.5rem;
-  height: 2.5rem;
+.circleBtn {
+  composes: pressable from '../styles/shared.module.css';
   border-radius: 50%;
   border: none;
-  background: #d94f4f;
-  color: white;
-  font-size: 1.25rem;
   line-height: 1;
   display: flex;
   align-items: center;
   justify-content: center;
   cursor: pointer;
-  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
-  transition: transform 80ms ease, box-shadow 80ms ease;
 }
 
-.removeBtn:active {
-  transform: translateY(2px);
-  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
+.removeBtn {
+  composes: circleBtn;
+  flex-shrink: 0;
+  width: 2.5rem;
+  height: 2.5rem;
+  background: #d94f4f;
+  color: white;
+  font-size: 1.25rem;
 }
 
 .addRow {
@@ -50,22 +48,9 @@
 }
 
 .addBtn {
+  composes: circleBtn;
   width: 3rem;
   height: 3rem;
-  border-radius: 50%;
-  border: none;
-  background: #a8d5e8;
+  background: var(--color-blue);
   font-size: 1.75rem;
-  line-height: 1;
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  cursor: pointer;
-  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
-  transition: transform 80ms ease, box-shadow 80ms ease;
-}
-
-.addBtn:active {
-  transform: translateY(2px);
-  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
 }

src/pages/TitleScreen.module.css

@@ -1,14 +1,8 @@
 .frame {
-  position: fixed;
-  inset: 1rem;
-  border: 2px solid black;
-  border-radius: 2rem;
+  composes: card from '../styles/shared.module.css';
   background: transparent;
-  display: flex;
-  flex-direction: column;
   align-items: center;
   justify-content: center;
-  overflow: hidden;
 }
 
 .title {

src/styles/shared.module.css

@@ -0,0 +1,19 @@
+.card {
+  position: fixed;
+  inset: 1rem;
+  border: 2px solid black;
+  border-radius: 2rem;
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+}
+
+.pressable {
+  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
+  transition: transform 80ms ease, box-shadow 80ms ease;
+}
+
+.pressable:active:not(:disabled) {
+  transform: translateY(2px);
+  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
+}